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  • 8751.
    Anandavadivelan, Poorna
    et al.
    Karolinska Inst, Karolinska Univ Hosp, Dept Mol Med & Surg, Surg Care Sci, Stockholm, Sweden.
    Wikman, Anna
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Reproductive Health.
    Johar, Asif
    Karolinska Inst, Karolinska Univ Hosp, Dept Mol Med & Surg, Surg Care Sci, Stockholm, Sweden.
    Lagergren, Pernilla
    Karolinska Inst, Karolinska Univ Hosp, Dept Mol Med & Surg, Surg Care Sci, Stockholm, Sweden.
    Profiles of patient and tumour characteristics in relation to health-related quality of life after oesophageal cancer surgery2018In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 13, no 4, article id e0196187Article in journal (Refereed)
    Abstract [en]

    Strong deterioration in health-related quality of life (HRQOL) is a major concern in a sub-group of long-term oesophageal cancer survivors. This study aimed to identify potential clustering of patients and tumour variables that predicts such deterioration. Patient and tumour variables were collected in a prospective cohort of patients who underwent surgery for oesophageal cancer in Sweden 2001–2005. Latent cluster analysis identified statistically significant clustering of these variables. Multivariable logistic regression adjusted for age, BMI, tumour stage and marital status was used to determine odds ratios (ORs) with 95% confidence intervals (CIs) between patient profiles and HRQOL at 3 and 5 years from surgery. Among 155 included patients at 3 years, three patient profiles were identified: 1) ‘reference profile’ (males, younger age, employed, upper secondary education, co-habitating, urban dwellers, adenocarcinoma and advanced tumour stage) (n = 47;30%), 2) ‘adenocarcinoma profile’ (middle age, unemployed/retired, males, low education, co-habitating, adenocarcinoma, advanced tumour stage, tumour in lower oesophagus/cardia, and co-morbidities (n = 79;51%), and 3) ‘squamous-cell carcinoma profile’ (unemployed/retired, middle-age, males, low BMI, urban dwellers, squamous-cell carcinoma, tumour in upper/middle oesophagus (n = 29;19%). These profiles did not differ regarding most HRQOL measures. Exceptions were the squamous-cell carcinoma profile, reporting more constipation (OR = 5.69; 95%CI: 1.34–24.28) and trouble swallowing saliva (OR = 4.87; 95%CI: 1.04–22.78) and the adenocarcinoma profile reporting more dyspnoea (OR = 2.60; 95%CI: 1.00–6.77) and constipation (OR = 3.31; 95%CI: 1.00–10.97) compared to the reference profile. Three distinct patient profiles were identified but these could not explain the substantial deterioration in HRQOL observed in the sub-sample of survivors.

  • 8752.
    Anandavadivelan, Poorna
    et al.
    Karolinska Inst, Stockholm, Sweden.
    Wikman, Anna
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Reproductive Health.
    Martin, Lena
    Dept Biosci & Nutr, Stockholm, Sweden.
    Rueb, Claudia
    Imperial Coll Healthcare NHS Trust, St Marys Hosp, London, England.
    Johar, Asif
    Karolinska Inst, Dept Mol Med & Surg, Surg Care Sci, Stockholm, Sweden.
    Malberg, Kalle
    Karolinska Inst, Dept Mol Med & Surg, Surg Care Sci, Stockholm, Sweden.
    Lagergren, Pernilla
    Karolinska Inst, Dept Mol Med & Surg, Surg Care Sci, Stockholm, Sweden.
    Extent of dumping symptoms and its association with malnutrition following surgery for oesophageal cancer2018In: Quality of Life Research, ISSN 0962-9343, E-ISSN 1573-2649, Vol. 27, no Supplement 1, p. S76-S76Article in journal (Other academic)
  • 8753.
    Anandhi, Aavudai
    et al.
    Florida A&M Univ, Coll Agr & Food Sci, Biol Syst Engn, Tallahassee, FL 32307 USA;Florida A&M Univ, Coll Agr & Food Sci, Ctr Water Resources, Tallahassee, FL 32307 USA.
    Pierson, Don
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Limnology.
    Frei, Allan
    CUNY, Hunter Coll, Dept Geog, New York, NY 10065 USA;CUNY, CUNY Inst Sustainable Cities, New York, NY 10065 USA.
    Evaluation of Climate Model Performance for Water Supply Studies: Case Study for New York City2019In: Journal of water resources planning and management, ISSN 0733-9496, E-ISSN 1943-5452, Vol. 145, no 8, article id 06019006Article in journal (Refereed)
    Abstract [en]

    Evaluating the suitability of data from global climate models (GCMs) for use as input in water supply models is an important step in the larger task of evaluating the effects of climate change on water resources management such as that of water supply operations. The purpose of this paper is to present the process by which GCMs were evaluated and incorporated into the New York City (NYC) water supply's planning activities and to provide conclusions regarding the overall effectiveness of the ranking procedure used in the evaluation. A suite of GCMs participating in Phase 3 of the Coupled Model Intercomparison Project (CMIP3) were evaluated for use in climate change projections in the watersheds of the NYC water supply that provide 90% of the water consumed by NYC. GCM data were aggregated using the seven land-grid points surrounding NYC watersheds, and these data with a daily timestep were evaluated seasonally using probability-based skill scores for various combinations of five meteorological variables (precipitation, average, maximum and minimum temperatures, and wind speed). These are the key variables for the NYC water supply because they affect the timing and magnitude of water, energy, sediment, and nutrient fluxes into the reservoirs as well as in simulating watershed hydrology and reservoir hydrodynamics. We attempted to choose a subset of GCMs based on the average of several skill metrics that compared baseline (20C3M) GCM results to observations. Skill metrics for the study indicate that the skill in simulating the frequency distributions of measured data is highest for temperature and lowest for wind. However, our attempts to identify the best model or subgroup of models were not successful because we found that no single model performs best when considering all of the variables and seasons.

  • 8754. Ananta, M
    et al.
    Aulin, Cecilia
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Polymer Chemistry.
    Hilborn, Jöns
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Polymer Chemistry.
    Aibibu, Dilibaier
    Houis, Stéphanie
    Brown, Robert A.
    Mudera, Vivek
    A Poly(Lactic Acid-Co-Caprolactone)–Collagen Hybrid for Tissue Engineering Applications2009In: Tissue engineering Part A, ISSN 1937-3341, Vol. 15, no 7, p. 1667-1675Article in journal (Refereed)
    Abstract [en]

     A biodegradable hybrid scaffold consisting of a synthetic polymer,   poly(lactic acid-co-caprolactone) (PLACL), and a naturally derived   polymer, collagen, was constructed by plastic compressing hyperhydrated  collagen gels onto a flat warp-knitted PLACL mesh. The collagen   compaction process was characterized, and it was found that the duration, rather than the applied load under the test conditions in the  plastic compression, was the determining factor of the collagen and cell density in the cell-carrying component. Cells were spatially   distributed in three different setups and statically cultured for a   period of 7 days. Short-term biocompatibility of the hybrid construct   was quantitatively assessed with AlamarBlue and qualitatively with   fluorescence staining and confocal microscopy. No significant cell   death was observed after the plastic compression of the interstitial   equivalents, confirming previous reports of good cell viability   retention. The interstitial, epithelial, and composite tissue   equivalents showed no macroscopic signs of contraction and good cell   proliferation with a two- to threefold increase in cell number over 7   days. Quantitative analysis showed a homogenous cell distribution and   good biocompatibility. The results indicate that viable and proliferating multilayered tissue equivalents can be engineered using   the PLACL-collagen hybrid construct in the space of several hours.

  • 8755. Ananta, M.
    et al.
    Hilborn, Jöns
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Polymer Chemistry.
    Aibibu, D.
    Brown, R. A.
    Mudera, V.
    A Novel Poly(L-Lactide-co-e-Caprolactone)-Collagen Hybrid Construct for Application in Tissue Engineering2007In: Termis-EU Meeting Abstracts, London, UK September 4-7 2007: [Published in Tissue Engineering, vol. 13, nr. 7], Mary Ann Liebert Inc. , 2007, p. 1637-1637Conference paper (Other academic)
    Abstract [en]

    A biodegradable hybrid construct consisting of a slow degrading poly(L-lactide-co-e-caprolactone) (PLA-e-CL) knitted mesh, plastically compressed (1) between two collagen gels was fabricated and tested in vitro for tissue engineering applications. The polymer mesh was incorporated to give greater mechanical stability to the compressed collagen scaffolds.

    The hybrid construct was characterized for fluid (weight) loss and cell viability during compression and mechanical properties.

    Hybrid constructs embedded and surface layered with human dermal

    fibroblasts (2, Eþ5 per 5 ml) were cultured for up to one week

    in static culture. Quantitative and qualitative data on cell viability

    and proliferation were obtained.

    It was found that the fluid (weight) loss in plastic compression

    of the hybrid construct was time dependent and not weight dependent

    at an applied load of 240 grams. No significant cell death

    was observed during the plastic compression process and a homogenous

    cell distribution was achieved. One week of static culture

    showed that the cultivated hybrid construct retained its

    mechanical properties with no evidence of degradation, and cells

    inside the constructs as well as layered on top of the constructs

    proliferated.

    We found the PLA-e-CL-Collagen hybrid construct a useful

    three-dimensional scaffold for tissue engineering of stratified tissues

    and potential applications in bladder wall, blood vessels and

    skin are currently being explored.

  • 8756. Anantharam, Venkat
    et al.
    Konstantopoulos, Takis
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Mathematics, Mathematical Statistics.
    Integral representation of skorokhod reflection2011In: Proceedings of the American Mathematical Society, ISSN 0002-9939, E-ISSN 1088-6826, Vol. 139, no 6, p. 2227-2237Article in journal (Refereed)
    Abstract [en]

    We show that a certain integral representation of the one-sided Skorokhod reflection of a continuous bounded variation function characterizes the reflection in that it possesses a unique maximal solution which solves the Skorokhod reflection problem.

  • 8757.
    Anantharaman, Devasena
    et al.
    Int Agcy Res Canc, Genet Epidemiol Grp, Lyon, France..
    Muller, David C.
    Int Agcy Res Canc, Genet Epidemiol Grp, Lyon, France..
    Lagiou, Pagona
    Univ Athens, Sch Med, Dept Hyg Epidemiol & Med Stat, Athens, Greece..
    Ahrens, Wolfgang
    BIPS, Leibniz Inst Prevent Res & Epidemiol, Bremen, Germany.;Univ Bremen, Fac Math & Comp Sci, Bremen, Germany..
    Holcatova, Ivana
    Charles Univ Prague, Fac Med 1, Inst Hyg & Epidemiol, Prague, Czech Republic..
    Merletti, Franco
    Univ Turin, Dept Med Sci, Canc Epidemiol Unit, Turin, Italy..
    Kjaerheim, Kristina
    Canc Registry Norway, Oslo, Norway..
    Polesel, Jerry
    CRO Aviano Natl Canc Inst, Unit Epidemiol & Biostat, Aviano, Italy..
    Simonato, Lorenzo
    Univ Padua, Dept Mol Med, Lab Publ Hlth & Populat Studies, Padua, Italy..
    Canova, Cristina
    Univ Padua, Dept Mol Med, Lab Publ Hlth & Populat Studies, Padua, Italy..
    Castellsague, Xavier
    CIBERESP, IDIBELL, ICO, Unit Infect & Canc, Barcelona, Spain..
    Macfarlane, Tatiana V.
    Univ Aberdeen, Sch Med & Dent, Aberdeen, Scotland..
    Znaor, Ariana
    Croatian Natl Inst Publ Hlth, Croatian Natl Canc Registry, Zagreb, Croatia.;Int Agcy Res Canc, Sect Canc Surveillance, Lyon, France..
    Thomson, Peter
    Newcastle Univ, Ctr Oral Hlth Res, Newcastle Upon Tyne, Tyne & Wear, England..
    Robinson, Max
    Newcastle Univ, Ctr Oral Hlth Res, Newcastle Upon Tyne, Tyne & Wear, England..
    Conway, David I.
    Univ Glasgow, Sch Dent, Coll Med Vet & Life Sci, Glasgow, Lanark, Scotland..
    Healy, Claire M.
    Trinity Coll Dublin, Sch Dent Sci, Dublin, Ireland..
    Tjönneland, Anne
    Danish Canc Soc, Inst Canc Epidemiol, Copenhagen, Denmark..
    Westin, Ulla
    Lund Univ, Dept Otorhinolaryngol Malmo & Lund, Lund, Sweden..
    Ekström, Johanna
    Lund Univ, Dept Clin Sci, Lund, Sweden..
    Chang-Claude, Jenny
    German Canc Res Ctr, Div Canc Epidemiol, Heidelberg, Germany..
    Kaaks, Rudolf
    German Canc Res Ctr, Div Canc Epidemiol, Heidelberg, Germany..
    Overvad, Kim
    Inst Publ Hlth, Aarhus, Denmark..
    Drogan, Dagmar
    German Inst Human Nutr Potsdam Rehbruecke DIfE, Nuthetal, Germany..
    Hallmans, Göran
    Umea Univ, Dept Biobank Res, Umea, Sweden..
    Laurell, Göran
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Otolaryngology and Head and Neck Surgery.
    Bueno-de-Mesquita, H. B.
    Natl Inst Publ Hlth & Environm RIVM, Dept Determinants Chron Dis DCD, Bilthoven, Netherlands.;Univ Med Ctr, Dept Gastroenterol & Hepatol, Utrecht, Netherlands.;Imperial Coll London, Sch Publ Hlth, Dept Epidemiol & Biostat, London, England.;Univ Malaya, Fac Med, Dept Social & Prevent Med, Kuala Lumpur, Malaysia..
    Peeters, Petra H.
    Univ Med Ctr, Julius Ctr Hlth Sci & Primary Care, Dept Epidemiol, Utrecht, Netherlands.;Imperial Coll London, Sch Publ Hlth, MRC PHE, London, England..
    Agudo, Antonio
    ICO, Unit Nutr & Canc, Barcelona, Spain..
    Larranaga, Nerea
    BIODonostia Res Inst, Basque Hlth Dept, Publ Hlth Div Gipuzkoa, San Sebastian, Spain.;CIBER Epidemiol & Publ Hlth CIBERESP, Madrid, Spain..
    Travis, Ruth C.
    Univ Oxford, Nuffield Dept Populat Hlth, Canc Epidemiol Unit, Oxford, England..
    Palli, Domenico
    Canc Res & Prevent Inst ISPO, Mol & Nutr Epidemiol Unit, Florence, Italy..
    Barricarte, Aurelio
    CIBER Epidemiol & Publ Hlth CIBERESP, Madrid, Spain.;Navarre Publ Hlth Inst, Pamplona, Spain..
    Trichopoulou, Antonia
    Hellen Hlth Fdn, Athens, Greece.;Acad Athens, Bur Epidemiol Res, Athens, Greece..
    George, Saitakis
    Univ Athens, Sch Med, Dept Hyg Epidemiol & Med Stat, Athens, Greece.;Hellen Hlth Fdn, Athens, Greece..
    Trichopoulos, Dimitrios
    Hellen Hlth Fdn, Athens, Greece.;Acad Athens, Bur Epidemiol Res, Athens, Greece.;Harvard Sch Publ Hlth, Dept Epidemiol, Boston, MA USA..
    Ramon Quiros, J.
    Publ Hlth Directorate Asturias, Oviedo, Spain..
    Grioni, Sara
    Fdn IRCCS, Ist Nazl Tumori, Epidemiol & Prevent Unit, Milan, Italy..
    Sacerdote, Carlotta
    Univ Turin, Citta Salute & Sci Hosp, Canc Epidemiol Unit, Turin, Italy.;Ctr Canc Prevent CPO, Turin, Italy..
    Navarro, Carmen
    CIBER Epidemiol & Publ Hlth CIBERESP, Madrid, Spain.;IMIB Arrixaca, Murcia Reg Hlth Council, Dept Epidemiol, Murcia, Spain.;Univ Murcia, Dept Hlth & Social Sci, Murcia, Spain..
    Sanchez, Maria-Jose
    CIBER Epidemiol & Publ Hlth CIBERESP, Madrid, Spain.;Univ Granada, Inst Invest Biosanitaria, Granada, Spain..
    Tumino, Rosario
    Civ MP Arezzo Hosp, Canc Registry, Asp Ragusa, Ragusa, Italy.;Civ MP Arezzo Hosp, Histopathol Unit, Asp Ragusa, Ragusa, Italy..
    Severi, Gianluca
    Human Genet Fdn HuGeF, Turin, Italy.;Canc Council Victoria, Canc Epidemiol Ctr, Melbourne, Vic, Australia.;Univ Melbourne, Melbourne Sch Populat & Global Hlth, Ctr Epidemiol & Biostat, Melbourne, Vic 3010, Australia..
    Boutron-Ruault, Marie-Christine
    INSERM, Ctr Res Epidemiol & Populat Hlth CESP, Villejuif, France.;Univ Paris 11, Villejuif, France.;Inst Gustave Roussy, Villejuif, France..
    Clavel-Chapelon, Francoise
    INSERM, Ctr Res Epidemiol & Populat Hlth CESP, Villejuif, France.;Univ Paris 11, Villejuif, France.;Inst Gustave Roussy, Villejuif, France..
    Panico, Salvatore
    Univ Naples Federico II, Dipartimento Med Clin & Chirurgia, Naples, Italy..
    Weiderpass, Elisabete
    Arctic Univ Norway, Univ Tromso, Fac Hlth Sci, Dept Community Med, Tromso, Norway.;Canc Registry Norway, Oslo, Norway.;Karolinska Inst, Dept Med Epidemiol & Biostat, Stockholm, Sweden.;Folkhalsan Res Ctr, Dept Genet Epidemiol, Helsinki, Finland..
    Lund, Eiliv
    Arctic Univ Norway, Univ Tromso, Fac Hlth Sci, Dept Community Med, Tromso, Norway..
    Gram, Inger T.
    Arctic Univ Norway, Univ Tromso, Fac Hlth Sci, Dept Community Med, Tromso, Norway..
    Riboli, Elio
    Imperial Coll London, Sch Publ Hlth, London, England..
    Pawlita, Michael
    German Canc Res Ctr, Heidelberg, Germany..
    Waterboer, Tim
    German Canc Res Ctr, Heidelberg, Germany..
    Kreimer, Aimee R.
    NCI, NIH, Bethesda, MD 20892 USA..
    Johansson, Mattias
    Int Agcy Res Canc, Genet Epidemiol Grp, Lyon, France..
    Brennan, Paul
    Int Agcy Res Canc, Genet Epidemiol Grp, Lyon, France..
    Combined effects of smoking and HPV16 in oropharyngeal cancer2016In: International Journal of Epidemiology, ISSN 0300-5771, E-ISSN 1464-3685, Vol. 45, no 3, p. 752-761Article in journal (Refereed)
    Abstract [en]

    Background: Although smoking and HPV infection are recognized as important risk factors for oropharyngeal cancer, how their joint exposure impacts on oropharyngeal cancer risk is unclear. Specifically, whether smoking confers any additional risk to HPV-positive oropharyngeal cancer is not understood.

    Methods: Using HPV serology as a marker of HPV-related cancer, we examined the interaction between smoking and HPV16 in 459 oropharyngeal (and 1445 oral cavity and laryngeal) cancer patients and 3024 control participants from two large European multicentre studies. Odds ratios and credible intervals [CrI], adjusted for potential confounders, were estimated using Bayesian logistic regression.

    Results: Both smoking [odds ratio (OR [CrI]: 6.82 [4.52, 10.29]) and HPV seropositivity (OR [CrI]: 235.69 [99.95, 555.74]) were independently associated with oropharyngeal cancer. The joint association of smoking and HPV seropositivity was consistent with that expected on the additive scale (synergy index [CrI]: 1.32 [0.51, 3.45]), suggesting they act as independent risk factors for oropharyngeal cancer.

    Conclusions: Smoking was consistently associated with increase in oropharyngeal cancer risk in models stratified by HPV16 seropositivity. In addition, we report that the prevalence of oropharyngeal cancer increases with smoking for both HPV16-positive and HPV16-negative persons. The impact of smoking on HPV16-positive oropharyngeal cancer highlights the continued need for smoking cessation programmes for primary prevention of head and neck cancer.

  • 8758.
    Anaraki, Elham Halvani
    et al.
    Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Lab Photomol Sci, CH-1015 Lausanne, Switzerland;Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran.
    Kermanpur, Ahmad
    Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran.
    Mayer, Matthew T.
    Ecole Polytech Fed Lausanne, Lab Photon & Interfaces, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland;Helmholtz Zentrum Berlin, Young Investigator Grp Electrochem Convers CO2, Hahn Meitner Pl 1, D-14109 Berlin, Germany.
    Steier, Ludmilla
    Ecole Polytech Fed Lausanne, Lab Photon & Interfaces, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland;Imperial Coll London, Dept Chem, London SW7 2AZ, England.
    Ahmed, Taha
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
    Turren-Cruz, Silver-Hamill
    Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Lab Photomol Sci, CH-1015 Lausanne, Switzerland.
    Seo, Jiyoun
    Ecole Polytech Fed Lausanne, Lab Photon & Interfaces, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland.
    Luo, Jingshan
    Ecole Polytech Fed Lausanne, Lab Photon & Interfaces, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland.
    Zakeeruddin, Shaik Mohammad
    Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Lab Photomol Sci, CH-1015 Lausanne, Switzerland;Ecole Polytech Fed Lausanne, Lab Photon & Interfaces, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland.
    Tress, Wolfgang Richard
    Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Lab Photomol Sci, CH-1015 Lausanne, Switzerland;Ecole Polytech Fed Lausanne, Lab Photon & Interfaces, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland.
    Edvinsson, Tomas
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
    Graetzel, Michael
    Ecole Polytech Fed Lausanne, Lab Photon & Interfaces, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland.
    Hagfeldt, Anders
    Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Lab Photomol Sci, CH-1015 Lausanne, Switzerland.
    Correa-Baena, Juan-Pablo
    Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Lab Photomol Sci, CH-1015 Lausanne, Switzerland;MIT, Dept Mech Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
    Low-Temperature Nb-Doped SnO2 Electron-Selective Contact Yields over 20% Efficiency in Planar Perovskite Solar Cells2018In: ACS Energy Letters, ISSN 2380-8195, Vol. 3, no 4, p. 773-778Article in journal (Refereed)
    Abstract [en]

    Low-temperature planar organic inorganic lead halide perovskite solar cells have been at the center of attraction as power conversion efficiencies go beyond 20%. Here, we investigate Nb doping of SnO2 deposited by a low-cost, scalable chemical bath deposition (CBD) method. We study the effects of doping on compositional, structural, morphological, and device performance when these layers are employed as electron-selective layers (ESLs) in planar-structured PSCs. We use doping concentrations of 0, 1, 5, and 10 mol % Nb to Sn in solution. The ESLs were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, atomic force microscopy, and ultraviolet visible spectroscopy. ESLs with an optimum 5 mol % Nb doping yielded, on average, an improvement of all the device photovoltaic parameters with a champion power conversion efficiency of 20.5% (20.1% stabilized).

  • 8759. Anastasi, A.
    et al.
    Babusci, D.
    Bencivenni, G.
    Berlowski, M.
    Bloise, C.
    Bossi, F.
    Branchini, P.
    Budano, A.
    Balkestahl, Li Caldeira
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Cao, B.
    Ceradini, F.
    Ciambrone, P.
    Curciarello, F.
    Czerwiriski, E.
    D'Agostini, G.
    Dane, E.
    De Leo, V.
    De Lucia, E.
    De Santis, A.
    De Simone, P.
    Di Cicco, A.
    Di Domenico, A.
    Di Salvo, R.
    Domenici, D.
    D'Uffizi, A.
    Fantini, A.
    Felici, G.
    Fiore, S.
    Gajos, A.
    Gauzzi, P.
    Giardina, G.
    Giovannella, S.
    Graziani, E.
    Happacher, F.
    Heijkenskjold, Lena
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Ikegami, Walter Andersson
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Johansson, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Kaminska, D.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Krzemien, W.
    Kupsc, Andrezej
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Loffredo, S.
    Mandaglio, G.
    Martini, M.
    Mascolo, M.
    Messi, R.
    Miscetti, S.
    Morello, G.
    Moricciani, D.
    Moskal, P.
    Nguyen, F.
    Palladino, A.
    Passeri, A.
    Patera, V.
    del Rio, E. Perez
    Ranieri, A.
    Santangelo, P.
    Sarra, I.
    Schioppa, M.
    Silarski, M.
    Sirghi, F.
    Tortora, L.
    Venanzoni, G.
    Wislicki, W.
    Wolke, Magnus
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Search for dark Higgsstrahlung in e(+0)e(-) -> mu(+)mu(-) and missing energy events with the KLOE experiment2015In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 747, p. 365-372Article in journal (Refereed)
    Abstract [en]

    We searched for evidence of a Higgsstrahlung process in a secluded sector, leading to a final state with a dark photon U and a dark Higgs boson h', with the KLOE detector at DA Phi NE. We investigated the case of h' lighter than U, with U decaying into a muon pair and h' producing a missing energy signature. We found no evidence of the process and set upper limits to its parameters in the range 2m(mu) < m(U) < 1000 MeV, m(h') < m(U). (C) 2015 The Authors. Published by Elsevier B.V.

  • 8760.
    Anastasi, A.
    et al.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.;Univ Messina, Dipartimento Fis & Sci Terra, Messina, Italy..
    Babusci, D.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Bencivenni, G.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Berlowski, M.
    Natl Ctr Nucl Res, Warsaw, Poland..
    Bloise, C.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Bossi, F.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Branchini, P.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy..
    Budano, A.
    Univ Rome Tre, Dipartimento Matemat & Fis, I-00146 Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy..
    Balkeståhl, Li Caldeira
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Cao, Bo
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Ceradini, F.
    Univ Rome Tre, Dipartimento Matemat & Fis, I-00146 Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy..
    Ciambrone, R.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Curciarello, F.
    Ist Nazl Fis Nucl, Sez Catania, I-95129 Catania, Italy.;Univ Messina, Dipartimento Fis & Sci Terra, Messina, Italy.;Novosibirsk State Univ, Novosibirsk 630090, Russia..
    Czerwinski, E.
    Jagiellonian Univ, Inst Phys, Krakow, Poland..
    D'Agostini, G.
    Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
    Dane, E.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    De Leo, V.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy..
    De Lucia, E.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    De Santis, A.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    De Simone, P.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Di Cicco, A.
    Univ Rome Tre, Dipartimento Matemat & Fis, I-00146 Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy..
    Di Domenico, A.
    Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
    Di Salvo, R.
    Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy..
    Domenici, D.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    D'Uffizi, A.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Fantini, A.
    Univ Roma Tor Vergata, Dipartimento Fis, Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy..
    Felici, G.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Fiore, S.
    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.;Casaccia RC, ENEA UTTMAT IRR, Rome, Italy..
    Gajos, A.
    Jagiellonian Univ, Inst Phys, Krakow, Poland..
    Gauzzi, P.
    Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
    Giardina, G.
    Ist Nazl Fis Nucl, Sez Catania, I-95129 Catania, Italy.;Univ Messina, Dipartimento Fis & Sci Terra, Messina, Italy..
    Giovannella, S.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Graziani, E.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy..
    Happacher, F.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Heijkenskjold, Lena
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Andersson, Walter Ikegami
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Johansson, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Kaminska, D.
    Jagiellonian Univ, Inst Phys, Krakow, Poland..
    Krzemien, W.
    Natl Ctr Nucl Res, Warsaw, Poland..
    Kupsc, Andrezej
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Loffredo, S.
    Univ Rome Tre, Dipartimento Matemat & Fis, I-00146 Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy..
    Mandaglio, G.
    Univ Messina, Dipartimento Fis & Sci Terra, Messina, Italy.;Ist Nazl Fis Nucl, Grp Collegato Messina, Messina, Italy..
    Martini, M.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.;Univ Guglielmo Marconi, Dipartimento Sci & Tecnol Applicate, Rome, Italy..
    Mascolo, M.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Messi, R.
    Univ Roma Tor Vergata, Dipartimento Fis, Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy..
    Miscetti, S.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Morello, G.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Moricciani, D.
    Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy..
    Moskal, P.
    Jagiellonian Univ, Inst Phys, Krakow, Poland..
    Palladino, A.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Papenbrock, Michael
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Passeri, A.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy..
    Patera, V.
    Univ Roma La Sapienza, Dipartimento Sci Base & Applicate Ingn, I-00185 Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
    del Rio, E. Perez
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Ranieri, A.
    Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy..
    Santangelo, P.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Sarra, I.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Schioppa, M.
    Univ Calabria, Dipartimento Fis, I-87036 Arcavacata Di Rende, Italy.;Ist Nazl Fis Nucl, Grp Collegato Cosenza, Arcavacata Di Rende, Italy..
    Silarski, M.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Sirghi, F.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Tortora, L.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy..
    Venanzoni, G.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy..
    Wislicki, W.
    Natl Ctr Nucl Res, Warsaw, Poland..
    Wolke, Magnus
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Limit on the production of a low-mass vector boson in e(+)e(-) -> U gamma, U -> e(+)e(-) with the KLOE experiment2015In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 750, p. 633-637Article in journal (Refereed)
    Abstract [en]

    The existence of a new force beyond the Standard Model is compelling because it could explain several striking astrophysical observations which fail standard interpretations. We searched for the light vector mediator of this dark force, the U boson, with the KLOE detector at the DA Phi NE e(+)e(-) collider. Using an integrated luminosity of 1.54 fb(-1), we studied the process e(+)e(-) -> U gamma, with U -> e(+)e(-), using radiative return to search for a resonant peak in the dielectron invariant-mass distribution. We did not find evidence for a signal, and set a 90% CL upper limit on the mixing strength between the Standard Model photon and the dark photon, epsilon(2), at 10(-6)-10(-4) in the 5-520 MeV/c(2) mass range.

  • 8761. Anastasi, A.
    et al.
    Babusci, D.
    Bencivenni, G.
    Berlowski, M.
    Bloise, C.
    Bossi, F.
    Branchini, P.
    Budano, A.
    Caldeira Balkeståh, Li
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Cao, B.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Ceradini, F.
    Ciambrone, P.
    Curciarello, F.
    Czerwiński, E.
    D'Agostini, G.
    Danè, E.
    De Leo, V.
    De Lucia, E.
    De Santis, A.
    De Simone, P.
    Di Cicco, A.
    Di Domenico, A.
    Di Salvo, R.
    Domenici, D.
    D'Uffizi, A.
    Fantini, A.
    Felici, G.
    Fiore, S.
    Gajos, A.
    Gauzzi, P.
    Giardina, G.
    Giovannella, S.
    Graziani, E.
    Happacher, F.
    Heijkenskjöld, Lena
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Ikegami Andersson, Walter
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Johansson, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Kamińska, D.
    Krzemien, W.
    Kupsc, A.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Loffredo, S.
    Mandaglio, G.
    Martini, M.
    Mascolo, M.
    Messi, R.
    Miscetti, S.
    Morello, G.
    Moricciani, D.
    Moskal, P.
    Palladino, A.
    Papenbrock, Michael
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Passeri, A.
    Patera, V.
    Perez del Rio, E.
    Ranieri, A.
    Santangelo, P.
    Sarra, I.
    Schioppa, M.
    Silarski, M.
    Sirghi, F.
    Tortora, L.
    Venanzoni, G.
    Wiślicki, W.
    Wolke, Magnus
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Limit on the production of a new vector boson in e+e− → Uγ, U → π+π− with the KLOE experiment2016In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 757, p. 356-361Article in journal (Refereed)
    Abstract [en]

    Abstract The recent interest in a light gauge boson in the framework of an extra U(1) symmetry motivates searches in the mass range below 1 GeV. We present a search for such a particle, the dark photon, in e + e − → U γ , U → π + π − based on 28 million e + e − → π + π − γ events collected at DAΦNE by the KLOE experiment. The π + π − production by initial-state radiation compensates for a loss of sensitivity of previous KLOE U → e + e − , μ + μ − searches due to the small branching ratios in the ρ – ω resonance region. We found no evidence for a signal and set a limit at 90% CL on the mixing strength between the photon and the dark photon, ε 2 , in the U mass range between 527 and 987 MeV . Above 700 MeV this new limit is more stringent than previous ones.

  • 8762. Anastasi, A.
    et al.
    Babusci, D.
    Bencivenni, G.
    Berlowski, M.
    Bloise, C.
    Bossi, F.
    Branchini, P.
    Budano, A.
    Caldeira Balkeståh, Li
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Cao, Bo
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Ceradini, F.
    Ciambrone, P.
    Curciarello, F.
    Czerwinski, E.
    D’Agostini, G.
    Danè, E.
    De Leo, V.
    De Lucia, E.
    De Santis, A.
    De Simone, P.
    Di Cicco, A.
    Di Domenico, A.
    Di Salvo, R.
    Domenici, D.
    D’Uffizi, A.
    Fantini, A.
    Felici, G.
    Fiore, S.
    Gajos, A.
    Gauzzi, P.
    Giardina, G.
    Giovannella, S.
    Graziani, E.
    Happacher, F.
    Heijkenskjöld, Lena
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Ikegami Andersson, Walter
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Johansson, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Kaminska, D.
    Krzemien, W.
    Kupsc, Andrzej
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Loffredo, S.
    Mandaglio, G.
    Martini, M.
    Mascolo, M.
    Messi, R.
    Miscetti, S.
    Morello, G.
    Moricciani, D.
    Moskal, P.
    Papenbrock, Michael
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Passeri, A.
    Patera, V.
    Perez del Rio, E.
    Ranieri, A.
    Santangelo, P.
    Sarra, I.
    Schioppa, M.
    Silarski, M.
    Sirghi, F.
    Tortora, L.
    Venanzoni, G.
    Wislicki, W.
    Wolke, Magnus
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Precision measurement of the η → π + π − π 0 Dalitz plot distribution with the KLOE detector2016In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 5, article id 019Article in journal (Refereed)
    Abstract [en]

    Using 1.6 fb−1 of e + e − → ϕ → ηγ data collected with the KLOE detector at DAΦNE, the Dalitz plot distribution for the η → π + π − π 0 decay is studied with the world’s largest sample of ∼ 4.7 · 106 events. The Dalitz plot density is parametrized as a polynomial expansion up to cubic terms in the normalized dimensionless variables X and Y . The experiment is sensitive to all charge conjugation conserving terms of the expansion, including a gX 2 Y term. The statistical uncertainty of all parameters is improved by a factor two with respect to earlier measurements.

  • 8763.
    Anastasi, A.
    et al.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.;Univ Messina, Dipartimento Sci Matemat & Informat, Sci Fis & Sci Terra, Messina, Italy..
    Babusci, D.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Bencivenni, G.
    Berlowski, M.
    Bloise, C.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Bossi, F.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Branchini, R.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy..
    Budano, A.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy..
    Caldeira Balkeståhl, Li
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Cao, Bo
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Ceradini, F.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy..
    Ciambrone, R.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Curciarello, F.
    Ist Nazl Fis Nucl, Sez Catania, Catania, Italy.;Univ Messina, Dipartimento Sci Matemat & Informat, Sci Fis & Sci Terra, Messina, Italy.;Novosibirsk State Univ, Novosibirsk 630090, Russia..
    Czerwinski, E.
    Jagiellonian Univ, Inst Phys, Krakow, Poland..
    D'Agostini, G.
    Univ Sapienza, Dipartimento Fis, Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
    Dane, E.
    De Leo, V.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy..
    De Lucia, E.
    De Santis, A.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    De Simone, R.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Di Cicco, A.
    Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy..
    Di Domenico, A.
    Univ Sapienza, Dipartimento Fis, Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
    Di Salvo, R.
    Domenici, D.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    D'Uffizi, A.
    Fantini, A.
    Univ Tor Vergata, Dipartimento Fis, Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy..
    Felici, G.
    Fiore, S.
    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.;Casaccia RC, ENEA UTTMAT IRR, Rome, Italy..
    Gajos, A.
    Jagiellonian Univ, Inst Phys, Krakow, Poland..
    Gauzzi, R.
    Univ Sapienza, Dipartimento Fis, Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
    Giardina, G.
    Univ Messina, Dipartimento Sci Matemat & Informat, Sci Fis & Sci Terra, Messina, Italy..
    Giovannella, S.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Graziani, E.
    Happacher, F.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Heijkenskjöld, Lena
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Johansson, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Kaminska, D.
    Krzemien, W.
    Natl Ctr Nucl Res, Warsaw, Poland..
    Kupsc, Andrzej
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Loffredo, S.
    Lukin, P. A.
    Novosibirsk State Univ, Novosibirsk 630090, Russia.;Budker Inst Nucl Phys, Novosibirsk 630090, Russia..
    Mandaglio, G.
    Univ Messina, Dipartimento Sci Chim Biol Farmaceut & Ambientali, Messina, Italy.;Ist Nazl Fis Nucl, Grp Collegato Messina, Messina, Italy..
    Martini, M.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.;Univ Guglielmo Marconi, Dipartimento Sci & Tecnol Applicate, Rome, Italy..
    Mascolo, M.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Messi, R.
    Univ Tor Vergata, Dipartimento Fis, Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy..
    Miscetti, S.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Morello, G.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Moricciani, D.
    Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy..
    Moskal, R.
    Papenbrock, M.
    Passeri, A.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy..
    Patera, V.
    Univ Sapienza, Dipartimento Sci Base & Applicate Ingn, Rome, Italy..
    del Rio, E. Perez
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Ranieri, A.
    Ist Nazl Fis Nucl, Sez Bari, Bari, Italy..
    Santangelo, R.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Sarra, I.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Schioppa, M.
    Univ Calabria, Dipartimento Fis, Arcavacata Di Rende, Italy.;Ist Nazl Fis Nucl, Grp Collegato Cosenza, Arcavacata Di Rende, Italy..
    Selce, A.
    Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy..
    Silarski, M.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Sirghi, F.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Tortora, L.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy..
    Venanzoni, G.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Wislicki, W.
    Wolke, M.
    Jegerlehner, F.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics. Humboldt Univ, Inst Phys, Berlin, Germany.;Deutsch Elektronen Synchrotron DESY, Platanenallee 6, D-15738 Zeuthen, Germany..
    Measurement of the running of the fine structure constant below 1 GeV with the KLOE detector2017In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 767, p. 485-492Article in journal (Refereed)
    Abstract [en]

    We have measured the running of the effective QED coupling constant alpha(s) in the time-like region 0.6 < root s < 0.975 GeV with the KLOE detector at DA Phi NE using the Initial-State Radiation process e(+) e(-) -> mu(+) mu(-)gamma. It represents the first measurement of the running of alpha(s) in this energy region. Our results show a more than 5 sigma significance of the hadronic contribution to the running of alpha(s), which is the strongest direct evidence both in time- and space-like regions achieved in a single measurement. By using the e(+) e(-) -> pi(+) pi(-) cross section measured by KLOE, the real and imaginary parts of the shift Delta alpha(s) have been extracted. From a fit of the real part of Delta alpha(s) and assuming the lepton universality the branching ratio BR(omega -> mu(+) mu(-)) = (6.6 +/- 1.4(stat) +/- 1.7(syst)) (.) 10 (5)has been determined.

  • 8764.
    Anastasi, A.
    et al.
    INFN, Lab Nazl Frascati, Frascati, Italy.;Univ Messina, Dipartimento Sci Matemat & Informat Sci Fis & Sci, Messina, Italy..
    Babusci, D.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    Berlowski, M.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    Bloise, C.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    Bossi, F.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    Branchini, P.
    INFN, Sez Roma Tre, Rome, Italy..
    Budano, A.
    Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy.;INFN, Sez Roma Tre, Rome, Italy..
    Balkeståhl, Li Caldeira
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Cao, Bo
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Ceradini, F.
    Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy.;INFN, Sez Roma Tre, Rome, Italy..
    Ciambrone, P.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    Curciarello, F.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    Czerwinski, E.
    Jagiellonian Univ, Inst Phys, Krakow, Poland..
    D'Agostini, G.
    Univ Sapienza, Dipartimento Fis, Rome, Italy.;INFN, Sez Roma, Rome, Italy..
    Dane, E.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    De Leo, V.
    INFN, Sez Roma Tor Vergata, Rome, Italy..
    De Lucia, E.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    De Santis, A.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    De Simone, P.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    Di Cicco, A.
    Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy.;INFN, Sez Roma Tre, Rome, Italy..
    Di Domenico, A.
    Univ Sapienza, Dipartimento Fis, Rome, Italy.;INFN, Sez Roma, Rome, Italy..
    Domenici, D.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    D'Uffizi, A.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    Fantini, A.
    Univ Tor Vergata, Dipartimento Fis, Rome, Italy.;INFN, Sez Roma Tor Vergata, Rome, Italy..
    Fantini, G.
    Gran Sasso Sci Inst, Laquila, Italy..
    Fermani, P.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    Fiore, S.
    INFN, Sez Roma, Rome, Italy.;ENEA, Dept Fusion & Technol Nucl Safety & Secur, Frascati, RM, Italy..
    Gajos, A.
    Jagiellonian Univ, Inst Phys, Krakow, Poland..
    Gauzzi, P.
    Univ Sapienza, Dipartimento Fis, Rome, Italy.;INFN, Sez Roma, Rome, Italy..
    Giovannella, S.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    Graziani, E.
    INFN, Sez Roma Tre, Rome, Italy..
    Ivanov, V. L.
    Budker Inst Nucl Phys, Novosibirsk, Russia.;Novosibirsk State Univ, Novosibirsk, Russia..
    Johansson, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Kang, X.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    Kisielewska-Kaminska, D.
    Jagiellonian Univ, Inst Phys, Krakow, Poland..
    Kozyrev, E. A.
    Budker Inst Nucl Phys, Novosibirsk, Russia.;Novosibirsk State Univ, Novosibirsk, Russia..
    Krzemien, W.
    Natl Ctr Nucl Res, Warsaw, Poland..
    Kupsc, Andrzej
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Loffredo, S.
    Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy.;INFN, Sez Roma Tre, Rome, Italy..
    Lukin, P. A.
    Budker Inst Nucl Phys, Novosibirsk, Russia.;Novosibirsk State Univ, Novosibirsk, Russia..
    Mandaglio, G.
    INFN, Sez Catania, Catania, Italy.;Univ Messina, Dipartimento Sci Chim Biol Farmaceut & Ambientali, Messina, Italy..
    Martini, M.
    INFN, Lab Nazl Frascati, Frascati, Italy.;Univ Guglielmo Marconi, Dipartimento Sci &Tecnol Applicate, Rome, Italy..
    Messi, R.
    Univ Tor Vergata, Dipartimento Fis, Rome, Italy.;INFN, Sez Roma Tor Vergata, Rome, Italy..
    Miscetti, S.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    Morello, G.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    Moricciani, D.
    INFN, Sez Roma Tor Vergata, Rome, Italy..
    Moskal, P.
    Jagiellonian Univ, Inst Phys, Krakow, Poland..
    Passeri, A.
    INFN, Sez Roma Tre, Rome, Italy..
    Patera, V.
    Univ Sapienza, Dipartimento Sci Base & Applicate Ingn, Rome, Italy.;INFN, Sez Roma, Rome, Italy..
    del Rio, E. Perez
    INFN, Lab Nazl Frascati, Frascati, Italy..
    Raha, N.
    INFN, Sez Roma Tor Vergata, Rome, Italy..
    Santangelo, P.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    Schioppa, M.
    Univ Calabria, Dipartimento Fis, Arcavacata Di Rende, Italy.;INFN, Grp Collegato Cosenza, Arcavacata Di Rende, Italy..
    Selce, A.
    Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy.;INFN, Sez Roma Tre, Rome, Italy..
    Silarski, M.
    Jagiellonian Univ, Inst Phys, Krakow, Poland..
    Sirghi, F.
    INFN, Lab Nazl Frascati, Frascati, Italy..
    Solodov, E. P.
    Budker Inst Nucl Phys, Novosibirsk, Russia.;Novosibirsk State Univ, Novosibirsk, Russia..
    Tortora, L.
    INFN, Sez Roma Tre, Rome, Italy..
    Venanzoni, G.
    INFN, Sez Pisa, Pisa, Italy..
    Wislicki, W.
    Natl Ctr Nucl Res, Warsaw, Poland..
    Wolke, Magnus
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Keshavarzi, A.
    Univ Liverpool, Dept Math Sci, Liverpool L69 3BX, Merseyside, England..
    Mueller, S. E.
    Helmholtz Zentrum Dresden Rossendorf, Dept Informat Serv & Comp, Dresden, Germany.;Helmholtz Zentrum Dresden Rossendorf, Inst Radiat Phys, Dresden, Germany..
    Teubner, T.
    Univ Liverpool, Dept Math Sci, Liverpool L69 3BX, Merseyside, England..
    Combination of KLOE sigma (e(+) e(-) -> pi(+)pi(-) gamma(gamma)) measurements and determination of a(mu)(pi+pi-) in the energy range 0.10 < s < 0.95 GeV22018In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 3, article id 173Article in journal (Refereed)
    Abstract [en]

    The three precision measurements of the cross section sigma (e(+)e(-) -> pi(+)pi(-)gamma(gamma)) using initial state radiation by the KLOE collaboration provide an important input for the prediction of the hadronic contribution to the anomalous magnetic moment of the muon. These measurements are correlated for both statistical and systematic uncertainties and, therefore, the simultaneous use of these measurements requires covariance matrices that fully describe the correlations. We present the construction of these covariance matrices and use them to determine a combined KLOE measurement for sigma (e(+)e(-) -> pi(+)pi(-)gamma(gamma)). We find, from this combination, a two-pion contribution to the muon magnetic anomaly in the energy range 0.10 < s < 0.95 GeV2 of a(mu)(pi+pi-) (489.8 +/- 1.7(stat) +/- 4.8(sys)) x 10(-10).

  • 8765.
    Anastasi, A.
    et al.
    Univ Messina, Dipartimento Sci Matemat & Informat, Sci Fis & Sci Terra, Messina, Italy;Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    Babusci, D.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    Berlowski, M.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy;Natl Ctr Nucl Res, Warsaw, Poland.
    Bloise, C.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    Bossi, F.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    Branchini, P.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy.
    Budano, A.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy;Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy.
    Cao, Bo
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Capon, G.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    Ceradini, F.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy;Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy.
    Ciambrone, P.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    Curciarello, F.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    Czerwinski, E.
    Jagiellonian Univ, Inst Phys, Krakow, Poland.
    D'Agostini, G.
    Univ Sapienza, Dipartimento Fis, Rome, Italy;Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.
    Dane, E.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    De Leo, V.
    Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy.
    De Lucia, E.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    De Santis, A.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    De Simone, P.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    Di Cicco, A.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy;Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy.
    Di Domenico, A.
    Univ Sapienza, Dipartimento Fis, Rome, Italy;Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.
    Domenici, D.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    D'Uffizi, A.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    Fantini, A.
    Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy;Univ Tor Vergata, Dipartimento Fis, Rome, Italy.
    Fantini, G.
    Gran Sasso Sci Inst, Laquila, Italy.
    Fermani, P.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    Fiore, S.
    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy;Casaccia RC, ENEA UTTMAT IRR, Rome, Italy.
    Gajos, A.
    Jagiellonian Univ, Inst Phys, Krakow, Poland.
    Gauzzi, P.
    Univ Sapienza, Dipartimento Fis, Rome, Italy;Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.
    Giovannella, S.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    Graziani, E.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy.
    Ivanov, V. L.
    Budker Inst Nucl Phys, Novosibirsk, Russia;Novosibirsk State Univ, Novosibirsk, Russia.
    Johansson, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Kang, X.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    Kisielewska-Kaminska, D.
    Jagiellonian Univ, Inst Phys, Krakow, Poland.
    Kozyrev, E. A.
    Novosibirsk State Univ, Novosibirsk, Russia.
    Krzemien, W.
    Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy.
    Kupsc, Andrzej
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Loffredo, S.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy;Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy.
    Lukin, P. A.
    Novosibirsk State Univ, Novosibirsk, Russia.
    Mandaglio, G.
    Univ Messina, Dipartimento Sci Chim Biol Farmaceut & Ambientali, Messina, Italy;Ist Nazl Fis Nucl, Sez Catania, Catania, Italy.
    Martini, M.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy;Univ Guglielmo Marconi, Dipartimento Sci & Tecnol Applicate, Rome, Italy.
    Messi, R.
    Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy;Univ Tor Vergata, Dipartimento Fis, Rome, Italy.
    Miscetti, S.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    Moricciani, D.
    Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy.
    Moskal, P.
    Jagiellonian Univ, Inst Phys, Krakow, Poland.
    Passeri, A.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy.
    Patera, V.
    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy;Univ Sapienza, Dipartimento Sci Base & Applicate Ingn, Rome, Italy.
    del Rio, E. Perez
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    Raha, N.
    Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy.
    Santangelo, P.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
    Schioppa, M.
    Univ Calabria, Dipartimento Fis, Arcavacata Di Rende, Italy;Ist Nazl Fis Nucl, Grp Collegato Cosenza, Arcavacata Di Rende, Italy.
    Selce, A.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy;Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy.
    Silarski, M.
    Jagiellonian Univ, Inst Phys, Krakow, Poland.
    Sirghi, F.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy;Horia Hulubei Natl Inst Phys & Nucl Engn, Magurele, Romania.
    Solodov, E. P.
    Budker Inst Nucl Phys, Novosibirsk, Russia;Novosibirsk State Univ, Novosibirsk, Russia.
    Tortora, L.
    Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy.
    Venanzoni, G.
    Ist Nazl Fis Nucl, Sez Pisa, Pisa, Italy.
    Wislicki, W.
    Natl Ctr Nucl Res, Warsaw, Poland.
    Wolke, Magnus
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Measurement of the charge asymmetry for the K-S -> pi e nu decay and test of CPT symmetry with the KLOE detector2018In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 9, article id 021Article in journal (Refereed)
    Abstract [en]

    Using 1.63 fb(-1) of integrated luminosity collected by the KLOE experiment about 7 x 10(4) K-S -> pi(+/-)e(-/+)nu decays have been reconstructed. The measured value of the charge asymmetry for this decay is A(S) = (-4.9 +/- 5.7(stat) +/- 2.6(syst)) x 10(-3) which is almost twice more precise than the previous KLOE result. The combination of these two measurements gives A(S) = (3.8 +/- 5.0(stat) +/- 2.6(syst)) x 10(-3) and, together with the asymmetry of the K-L semileptonic decay, provides significant tests of the CPT symmetry. The obtained results are in agreement with CPT invariance.

  • 8766.
    Anastasi, A.
    et al.
    INFN, Lab Nazl Frascati, Frascati, Italy;Univ Messina, Sci Fis & Sci Terra, Dipartimento Sci Matemat & Informat, Messina, Italy.
    Babusci, D.
    INFN, Lab Nazl Frascati, Frascati, Italy.
    Berlowski, M.
    INFN, Lab Nazl Frascati, Frascati, Italy;Natl Ctr Nucl Res, Warsaw, Poland.
    Bloise, C.
    INFN, Lab Nazl Frascati, Frascati, Italy.
    Bossi, F.
    INFN, Lab Nazl Frascati, Frascati, Italy.
    Branchini, R.
    INFN, Sez Roma Tre, Rome, Italy.
    Budano, A.
    Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy;INFN, Sez Roma Tre, Rome, Italy.
    Cao, Bo
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Ceradini, F.
    Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy;INFN, Sez Roma Tre, Rome, Italy.
    Ciambrone, R.
    INFN, Lab Nazl Frascati, Frascati, Italy.
    Curciarello, F.
    INFN, Lab Nazl Frascati, Frascati, Italy.
    Czerwinski, E.
    Jagiellonian Univ, Inst Phys, Krakow, Poland.
    D'Agostini, G.
    Univ Sapienza, Dipartimento Fis, Rome, Italy;INFN, Sez Roma, Rome, Italy.
    Dane, E.
    INFN, Lab Nazl Frascati, Frascati, Italy.
    De Leo, V.
    INFN, Sez Roma Tor Vergata, Rome, Italy.
    De Lucia, E.
    INFN, Lab Nazl Frascati, Frascati, Italy.
    De Santis, A.
    INFN, Lab Nazl Frascati, Frascati, Italy.
    De Simone, R.
    INFN, Lab Nazl Frascati, Frascati, Italy.
    Di Cicco, A.
    Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy;INFN, Sez Roma Tre, Rome, Italy.
    Di Domenico, A.
    Univ Sapienza, Dipartimento Fis, Rome, Italy;INFN, Sez Roma, Rome, Italy.
    Domenici, D.
    INFN, Lab Nazl Frascati, Frascati, Italy.
    D'Uffizi, A.
    INFN, Lab Nazl Frascati, Frascati, Italy.
    Fantini, A.
    Univ Tor Vergata, Dipartimento Fis, Rome, Italy;INFN, Sez Roma Tor Vergata, Rome, Italy.
    Fantini, G.
    Gran Sasso Sci Inst, Laquila, Italy.
    Fermani, R.
    INFN, Lab Nazl Frascati, Frascati, Italy.
    Fiore, S.
    INFN, Sez Roma, Rome, Italy;ENEA, Dept Fus & Technol Nucl Safety & Secur, Frascati, RM, Italy.
    Gajos, A.
    Jagiellonian Univ, Inst Phys, Krakow, Poland.
    Gauzzi, R.
    Univ Sapienza, Dipartimento Fis, Rome, Italy;INFN, Sez Roma, Rome, Italy.
    Giovannella, S.
    INFN, Lab Nazl Frascati, Frascati, Italy.
    Graziani, E.
    INFN, Sez Roma Tre, Rome, Italy.
    Ivanov, V. L.
    Budker Inst Nucl Phys, Novosibirsk, Russia;Novosibirsk State Univ, Novosibirsk, Russia.
    Johansson, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Kang, X.
    INFN, Lab Nazl Frascati, Frascati, Italy.
    Kisielewska-Kaminska, D.
    Jagiellonian Univ, Inst Phys, Krakow, Poland.
    Kozyrev, E. A.
    Budker Inst Nucl Phys, Novosibirsk, Russia;Novosibirsk State Univ, Novosibirsk, Russia.
    Krzemien, W.
    Natl Ctr Nucl Res, Warsaw, Poland.
    Kupsc, Andrzej
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Lukin, P. A.
    Budker Inst Nucl Phys, Novosibirsk, Russia;Novosibirsk State Univ, Novosibirsk, Russia.
    Mandaglio, G.
    INFN, Sez Catania, Catania, Italy;Univ Messina, Dipartimento Sci Chim, Biol Farmaceut & Ambientali, Messina, Italy.
    Martini, M.
    INFN, Lab Nazl Frascati, Frascati, Italy;Univ Guglielmo Marconi, Dipartimento Sci & Tecnol Appl, Rome, Italy.
    Messi, R.
    Univ Tor Vergata, Dipartimento Fis, Rome, Italy;INFN, Sez Roma Tor Vergata, Rome, Italy.
    Miscetti, S.
    INFN, Lab Nazl Frascati, Frascati, Italy.
    Moricciani, D.
    INFN, Sez Roma Tor Vergata, Rome, Italy.
    Moskal, R.
    Jagiellonian Univ, Inst Phys, Krakow, Poland.
    Passeri, A.
    INFN, Sez Roma Tre, Rome, Italy.
    Patera, V.
    Univ Sapienza, Dipartimento Sci Base & Appl Ingn, Rome, Italy;INFN, Sez Roma, Rome, Italy.
    del Rio, E. Perez
    INFN, Lab Nazl Frascati, Frascati, Italy.
    Raha, N.
    INFN, Sez Roma Tor Vergata, Rome, Italy.
    Santangelo, R.
    INFN, Lab Nazl Frascati, Frascati, Italy.
    Schioppa, M.
    Univ Calabria, Dipartimento Fis, Arcavacata Di Rende, Italy;INFN, Grp Collegato Cosenza, Arcavacata Di Rende, Italy.
    Selce, A.
    Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy;INFN, Sez Roma Tre, Rome, Italy.
    Silarski, M.
    Jagiellonian Univ, Inst Phys, Krakow, Poland.
    Sirghi, F.
    INFN, Lab Nazl Frascati, Frascati, Italy;Horia Hulubei Natl Inst Phys & Nucl Engn, Magurele, Romania.
    Solodov, E. P.
    Budker Inst Nucl Phys, Novosibirsk, Russia;Novosibirsk State Univ, Novosibirsk, Russia.
    Tortora, L.
    INFN, Sez Roma Tre, Rome, Italy.
    Venanzoni, G.
    INFN, Sez Pisa, Pisa, Italy.
    Wislicki, W.
    Natl Ctr Nucl Res, Warsaw, Poland.
    Wolke, Magnus
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Combined limit on the production of a light gauge boson decaying into mu(+) mu(-) and pi(+) pi(-)2018In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 784, p. 336-341Article in journal (Refereed)
    Abstract [en]

    We searched for the mu(+) mu(-) decay of a light vector gauge boson, also known as dark photon, in the e(+) e(-) -> mu(+) mu(-) gamma(ISR) process by means of the Initial State Radiation (ISR) method. We used 1.93fb(-1) of data collected by the KLOE experiment at the DA Phi NE phi-factory. No structures have been observed over the irreducible mu(+) mu(-) background. A 90% CL limit on the ratio epsilon(2)= alpha'/alpha between the dark coupling constant and the fine structure constant of 3 x 10(-6)-2 x 10(-7) has been set in the dark photon mass region between 519 MeV and 973 MeV. This new limit has been combined with the published result obtained investigating the hypothesis of the dark photon decaying into hadrons in e(+) e(-) -> pi(+) pi(-) gamma(ISR) events. The combined 90% CL limit increases the sensitivity especially in the rho-omega interference region and excludes epsilon(2) greater than (13 - 2) x 10(-7). For dark photon masses greater than 600 MeV the combined limit is lower than 8 x 10(-7) resulting more stringent than present constraints from other experiments.

  • 8767. Anastasi, Antonio
    et al.
    Caldeira Balkeståh, Li
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Cao, Bo
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Heijkenskjöld, Lena
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Ikegami Andersson, Walter
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Johansson, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Kupsc, Andrzej
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Papenbrock, Michael
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Wolke, Magnus
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Measurement of the ϕ→π0e+e− transition form factor with the KLOE detector2016In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 757, p. 362-367Article in journal (Refereed)
    Abstract [en]

    A measurement of the vector to pseudoscalar conversion decay ϕ→π0e+e− with the KLOE experiment is presented. A sample of ∼9500 signal events was selected from a data set of 1.7 fb−1 of e+e− collisions at s√∼mϕ collected at the DAΦNE e+e− collider. These events were used to obtain the first measurement of the transition form factor |Fϕπ0(q2)| and a new measurement of the branching ratio of the decay: BR(ϕ→π0e+e−)=(1.35±0.05+0.05−0.10)×10−5. The result improves significantly on previous measurements and is in agreement with theoretical predictions.

  • 8768.
    Anastasiadis, Anastasios
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    A Monte Carlo simulation study of collimators for a high-spatial-resolution Gamma Emission Tomography instrument2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The present master thesis concerns a study of collimator designs for a high-spatial-resolution Gamma Emission Tomography (GET) instrument for used fuels utilizing Monte Carlo simulation codes. Designing a collimator for this purpose is a multilateral process that requires many interconnected and conflicting objectives to be taken into consideration. The purpose is to design a high-spatial-resolution GET system that combines in the best way the properties of a high detector count-rate, high photopeak to total spectrum ratio, low detector dead time and low leaking background radiation through the collimator material. As to achieve the best trade-off among these objectives, the GEANT4 and the Serpent 2 simulation codes were implemented. Used fuel contains various γ-ray emitting radionuclides and depending on the burnup history and cooling time their absolute intensities vary (i.e. for higher γ-ray intensity from the fuel, bigger collimator length is demanded). For this reason, Serpent 2 was used to produce long- and short-cooled fuel gamma emission spectra of low and high burnup. According to the obtained spectra, the collimator slit dimensions and material were determined. As far as the collimator length and material is concerned, the GEANT4 simulation toolkit was used to deal with shielding problems by applying the geometry splitting/Russian roulette variance reduction techniques. Serpent 2 simulations were performed in order to determine the transmitted signal intensity through the slit for various slit height and width dimensions. Finally, it was investigated the peak-to-total ratio change for different slit sizes and when a cavity structure was added along the slit length.

  • 8769.
    Anastasiadis, Anastasios
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Calculation of γ-ray mass attenuation coefficients (μ/ρ) for different burnup values of UO2 nuclear fuels in a PWR simulated by Serpent 2 Monte Carlo code2018Independent thesis Advanced level (degree of Master (Two Years)), 10 HE creditsStudent thesis
  • 8770.
    Anastasiadis, Anastasios
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Calculation of γ-ray source spectra for used LWR nuclear fuels2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The present project aims to provide the γ-ray source spectrum (the gamma energies and their intensities) for a nuclear fuel, given its physical dimensions, its enrichment and the detailed knowledge of the burnup history. In a nuclear reactor, the nuclide concentrations within the nuclear fuel change due to nuclear transmutation caused by neutron irradiation and due to the radioactive decay during and after the irradiation. This alteration in the fuel composition is simulated in this project with a burnup-mode simulation using the reactor physics code Serpent 2. A second Serpent 2 photon-mode simulation follows as to evaluate the γ-radiation spectrum from the respective nuclides produced in the first simulation. Finally, the γ-ray mass attenuation coefficients for selected energies are evaluated by combining the fuel elemental concentrations with the corresponding mass attenuation coefficients for fresh fuel based on NIST XCOM database. To facilitate the repeated evaluation of the γ-ray source spectrum, a custom-made MATLAB® function, GetEmissions, that initiates the Serpent 2 simulations was created. This function utilizes the user input data, which are the fuel dimensions, the fuel enrichment and the burnup history, as to automatically create an input for the Serpent 2 code. Afterwards, it executes burnup and photon simulations, and finally extracts the data sought for, which are the emitted by the fuel γ-ray energies and their intensities (γ-ray source spectrum). In addition, for the given fuel characteristics, the function provides the mass attenuation coefficient for a selected γ-ray passing the fuel. Using the GetEmissions function, the gamma spectra from ten nuclear burnup history cases representing a scan through low and high burnup and short, medium and long cooling times are calculated. The resulting top ten gamma energies are listed by absolute intensity, and information about the mother nuclide and the decay is provided.

  • 8771.
    Anastasopoulou, Stavroula
    et al.
    Karolinska Inst, Dept Womens & Childrens Hlth, Stockholm, Sweden;Karolinska Univ Hosp, Stockholm, Sweden.
    Eriksson, Mats A.
    Karolinska Inst, Dept Womens & Childrens Hlth, Stockholm, Sweden;Karolinska Univ Hosp, Stockholm, Sweden.
    Heyman, Mats
    Karolinska Inst, Dept Womens & Childrens Hlth, Stockholm, Sweden;Karolinska Univ Hosp, Stockholm, Sweden.
    Wang, Chen
    Karolinska Inst, Dept Womens & Childrens Hlth, Stockholm, Sweden;Karolinska Univ Hosp, Stockholm, Sweden.
    Niinimäki, Riitta
    Oulu Univ Hosp, Dept Children & Adolescents, Oulu, Finland;Univ Oulu, PEDEGO Res Unit, Oulu, Finland.
    Mikkel, Sirje
    Univ Tartu, Dept Hematol & Oncol, Tartu, Estonia.
    Vaitkeviciene, Goda E.
    Vilnius Univ Hosp Santaros Klin, Childrens Hosp, Vilnius, Lithuania;Vilnius Univ, Vilnius, Lithuania.
    Johannsdottir, Inga Maria
    Oslo Univ Hosp, Dept Pediat Hematol Oncol, Oslo, Norway.
    Myrberg, Ida Hed
    Karolinska Inst, Dept Womens & Childrens Hlth, Stockholm, Sweden.
    Jonsson, Olafur Gisli
    Univ Iceland, Dept Pediat, Reykjavik, Iceland.
    Als-Nielsen, Bodil
    Rigshosp, Univ Hosp, Dept Pediat & Adolescent Med, Copenhagen, Denmark;Univ Copenhagen, Fac Med, Inst Clin Med, Copenhagen, Denmark.
    Schmiegelow, Kjeld
    Rigshosp, Univ Hosp, Dept Pediat & Adolescent Med, Copenhagen, Denmark;Univ Copenhagen, Fac Med, Inst Clin Med, Copenhagen, Denmark.
    Banerjee, Joanna
    Univ Helsinki, Childrens Hosp, Dept Pediat Hematol Oncol & Stem Cell Transplanta, Helsinki, Finland;Helsinki Univ Hosp, Helsinki, Finland.
    Harila-Saari, Arja H.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Neuropediatrics/Paediatric oncology.
    Ranta, Susanna
    Karolinska Inst, Dept Womens & Childrens Hlth, Stockholm, Sweden;Karolinska Univ Hosp, Stockholm, Sweden.
    Posterior reversible encephalopathy syndrome in children with acute lymphoblastic leukemia: Clinical characteristics, risk factors, course, and outcome of disease2019In: Pediatric Blood & Cancer, ISSN 1545-5009, E-ISSN 1545-5017, Vol. 66, no 5, article id e27594Article in journal (Refereed)
    Abstract [en]

    Background: Posterior reversible encephalopathy syndrome (PRES) is a distinct entity with incompletely known predisposing factors. The aim of this study is to describe the incidence, risk factors, clinical course, and outcome of PRES in childhood acute lymphoblastic leukemia (ALL).

    Procedure: Patients aged 1.0 to 17.9 years diagnosed with ALL from July 2008 to December 2015 and treated according to the Nordic Society of Pediatric Hematology and Oncology (NOPHO) ALL2008 protocol were included. Patients with PRES were identified in the prospective NOPHO leukemia toxicity registry, and clinical data were collected from the medical records.

    Results: The study group included 1378 patients, of whom 52 met the criteria for PRES. The cumulative incidence of PRES at one month was 1.7% (95% CI, 1.1-2.5) and at one year 3.7% (95% CI, 2.9-4.9). Older age (hazard ratios [HR] for each one-year increase in age 1.1; 95% CI, 1.0-1.2, P = 0.001) and T-cell immunophenotype (HR, 2.9; 95% CI, 1.6-5.3, P = 0.0005) were associated with PRES. Central nervous system (CNS) involvement (odds ratios [OR] = 2.8; 95% CI, 1.2-6.5, P = 0.015) was associated with early PRES and high-risk block treatment (HR = 2.63; 95% CI, 1.1-6.4, P = 0.033) with late PRES. At follow-up of the PRES patients, seven patients had epilepsy and seven had neurocognitive difficulties.

    Conclusion: PRES is a neurotoxicity in the treatment of childhood ALL with both acute and long-term morbidity. Older age, T-cell leukemia, CNS involvement and high-risk block treatment are risk factors for PRES.

  • 8772. Anatory, J.
    et al.
    Theethayi, Nelson
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Technology, Department of Engineering Sciences. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Technology, Department of Engineering Sciences, Electricity. Avdelningen för elektricitetslära och åskforskning.
    Thottappillil, Rajeev
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Technology, Department of Engineering Sciences. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Technology, Department of Engineering Sciences, Electricity. Avdelningen för elektricitetslära och åskforskning.
    Kissaka, M.M.
    Mvungi, N.H.
    The Effects Of Iterconnections And Branched Network In The Broadband Powerline Communications2005In: XXVIIIth General Assembly of International Union of Radio Sciences, New Delhi, India, October 23-29, 2005Conference paper (Refereed)
  • 8773.
    Anatory, Justinian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Theethayi, Nelson
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    On the efficacy of using ground return in the broadband power-line communications: A transmission-line analysis2008In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 23, no 1, p. 132-139Article in journal (Refereed)
    Abstract [en]

    The power-line infrastructure has been identified as an efficient system suitable for broadband power-line communication (BPLC) to connect and control various end users. However, the network is affected by stochastic attenuations due to the number of interconnected branches, their line lengths, associated terminal loads, etc. There is yet another parameter that could influence the above stated attenuations or distortions depending on the way the signals are allowed to return to the transmitting end. In this paper, we investigate whether a finitely conducting ground return could be used for BPLC and to investigate its performance over the conventional methods Where one of the adjacent power-line conductors is-used as signal return. This study could be helpful to those who are proposing the use of ground as a return conductor in BPLC systems. It will be shown that the use of ground return for the BPLC system is effective or better only when the ground conductivity is high (>50 mS/m). When ground conditions are poorer, attenuations increase with., making them unsuitable for BPLC. There are situafrequency tions where poor ground conditions can still be used but only the transmission-line lengths are shorter. The analysis presented here is based on transmission-line solutions both under lossless (without ground return) and lossy (with ground return) conditions and are applied to typical low-voltage and medium-voltage channels. Comparisons are also made based on the power spectral densities and channel capacities.

  • 8774.
    Anatory, Justinian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. elektricitetslära och åskforskning.
    Theethayi, Nelson
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. elektricitetslära och åskforskning.
    Kissaka, Mussa
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. elektricitetslära och åskforskning.
    Mvungi, Nerey
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. elektricitetslära och åskforskning.
    Broadband Powerline Communications: Performance Analysis2006In: Enformatika Trans. on Engineering, Computing and Technology, Vol. 18, p. 250-254Article in journal (Refereed)
  • 8775.
    Anatory, Justinian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Division for Electricity and Lightning Research.
    Theethayi, Nelson
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Division for Electricity and Lightning Research.
    Kissaka, Mussa
    Faculty of Electrical and Computer Systems Engineering, University of Dar es Salaam.
    Mvungi, Nerey
    Faculty of Electrical and Computer Systems Engineering, University of Dar es Salaam.
    Thottappillil, Rajeev
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Division for Electricity and Lightning Research.
    The effects of load impedance, line length, and branches in the BPLC transmission-lines analysis for-medium-voltage channel2007In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 22, no 4, p. 2156-2162Article in journal (Refereed)
    Abstract [en]

    This paper presents the effects of load impedance, line length and branches on the performance of medium-voltage power-line communication (PLC) network. The power-line network topology adopted here is similar to that of the system in Tanzania. Different investigation with regard to network load impedances, direct line length (from transmitter to receiver), branched line length and number of branches has been investigated. From the frequency response of the transfer function (ratio of the received and transmitted signal), it is seen that position of notches and peaks in the magnitude and phase responses are largely affected in terms of attenuation and dispersion by the above said network parameters/configuration. These are observed in the time domain responses too. The observations presented in the paper could be helpful in suitable design of the PLC systems for a better data transfer and system performance.

  • 8776.
    Anatory, Justinian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Theethayi, Nelson
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Thottappillil, Rajeev
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Channel characterization for indoor power-line networks2009In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 24, no 4, p. 1883-1888Article in journal (Refereed)
    Abstract [en]

    Power-line networks are promising mediums by which broadband services can be offered, such as Internet services, voice over Internet protocol, digital entertainment, etc. In this paper, an analysis of delay spread, coherence bandwidth, channel capacity, and averaged delay in the frequency bands up to 100 MHz for typical indoor power-line networks are studied. Earlier studies for indoor power-line networks considered frequencies up to 30 MHz only and earlier works have shown that at these frequency bands, the data rates are generally low and are inefficient for digital entertainment in comparison with wireless local-area networks standards, such as IEEE 802.11 n. In this paper, it is shown that at 100 MHz, the average channel capacity for typical indoor power-line networks can be up to 2 Gb/s and it is found that by increasing the number of branches in the link between transmitting and receiving ends, the average channel capacity decreases from 2 Gb/s to 1 Gb/s (when the number of branches was increased by four times for a power spectral density of -60 dBm/Hz). At the same time, the coherence bandwidth decreased from 209.45 kHz to 137.41 kHz, which is much better than the coherence bandwidths corresponding to 30-MHz systems. It is therefore recommended to operate the indoor power-line networks at 100-MHz bandwidths for a wide variety of broadband services.

  • 8777.
    Anatory, Justinian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Theethayi, Nelson
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Thottappillil, Rajeev
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Effects of multipath on OFDM systems for indoor broadband power-line communication networks2009In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 24, no 3, p. 1190-1197Article in journal (Refereed)
    Abstract [en]

    Power-line networks are an excellent infrastructure for broadband data transmission. However, various multipaths within a broadband power-line communication (BPLC) system exist due to stochastic changes in the network load impedances, branches, etc. This further affects network performance. This paper attempts to investigate the performance of indoor channels of a BPLC system that uses orthogonal frequency-division multiplexing (OFDM) techniques. It is observed that when a branch is added in the link between the sending and receiving end of an indoor channel, an average of 4-dB power loss is found. Additionally, when the terminal impedances of the branch change from the line characteristic impedance to impedance of lower values, the power loss (signal-to-noise ratio) is about 0.67 dB/. On the contrary, for every increase in the terminal impedances by 100 , above the line characteristic impedance, the power loss is 0.1 dB/. When the line terminal impedances are close to short or open circuits, OFDM techniques show degraded performance. This situation is also observed when the number of branches increases. In this paper, it is shown that to overcome such performance degradation, the concatenated Reed-Solomon codes/interleaved Viterbi methods can be used. The observations presented in the paper could be useful for an efficient design of a BPLC system that uses OFDM techniques.

  • 8778.
    Anatory, Justinian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Theethayi, Nelson
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Thottappillil, Rajeev
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Performance of underground cables that use OFDM systems for broadband power-line communications2009In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 24, no 4, p. 1889-1897Article in journal (Refereed)
    Abstract [en]

    Power-line networks are proposed for broadband data transmission. The presence of multipaths within the broadband power-line communication (BPLC) system, due to stochastic changes in the network load impedances, branches, etc. pose a real challenge as it affects network performance. This paper attempts to investigate the performance of an orthogonal frequency-division multiplexing (OFDM)-based BPLC system that uses underground cables. It is found that when a branch is added in the link between the sending and receiving end, there is an average of 4-dB power loss. In addition, when the terminal impedances of the branches that are connected to the link between the transmitting and receiving end vary from line characteristic impedance to low-impedance values, the power loss (signal-to-noise ratio) is about 0.35 dB/ . On the contrary, for an increase in the terminal impedances by 100 above line characteristic impedance, the power loss is 0.23 dB//. When the branch terminal impedances are close to short or open circuits, OFDM techniques show degraded performance. This situation is also observed when the number of branches increases. It is shown that to overcome degraded network performance, the concatenated Reed-Solomon codes/interleaved Viterbi methods can be used, which could be used for an efficient design of the BPLC system that uses OFDM techniques.

  • 8779.
    Anatory, Justinian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Theethayi, Nelson
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Thottappillil, Rajeev
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Power-line communication channel model for interconnected networks. Part I: two-conductor system2009In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 24, no 1, p. 118-123Article in journal (Refereed)
    Abstract [en]

    This paper presents a generalized transmission-line approach to determine the transfer function of a power-line network of a two-conductor system (two parallel conductors) with distributed branches. The channel frequency responses are derived considering different terminal loads and branches. The model's time-domain behavior is validated using commercial power system simulation software called Alternative Transients Program-Electromagnetic Transients Program (ATP-EMTP). The simulation results from the model for three different topologies considered have excellent agreement with corresponding ATP-EMTP results. Hence, the model can be considered as a tool to characterize any given power-line channel topology that involves the two-conductor system. In the companion paper (Part II), the proposed method is extended for a multiconductor power-line system.

  • 8780.
    Anatory, Justinian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Theethayi, Nelson
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Thottappillil, Rajeev
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Power-line communication channel model for interconnected networks: Part II: multiconductor system2009In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 24, no 1, p. 124-128Article in journal (Refereed)
    Abstract [en]

    In this paper, we present an approach to determine the transfer function for multiconductor power-line networks with distributed branches and load terminations for broadband power-line communication (BPLC) applications. The applicability of the proposed channel model is verified numerically in time domain using the finite-difference-time domain (FDTD) method for the solution of transmission lines. The channel model simulation results are in excellent agreement with the corresponding FDTD results. The model therefore could be useful in the analysis and design of BPLC systems involving multiconductor power-line topology.

  • 8781.
    Anatory, Justinian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Theethayi, Nelson
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Thottappillil, Rajeev
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Kissaka, M. M.
    Mvungi, N. H.
    The influence of load impedance, line length, and branches on underground cable power-line communications (PLC) systems2008In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 23, no 1, p. 180-187Article in journal (Refereed)
    Abstract [en]

    An underground cable power transmission system is widely used in urban low-voltage power distribution systems. In order to assess the performance of such distribution systems as a low-voltage broadband power-line communication (BPLC) channel, this paper investigates the effects of load impedance, tine length, and branches on such systems, with special emphasis on power-line networks found in Tanzania. From the frequency response of the transfer function (ratio of the received and transmitted signals), it is seen that the position of notches and peaks in the magnitude are largely affected (observed in time-domain responses too) by the aforementioned network configuration and parameters. Additionally, channel capacity for such PLC channels for various conditions is investigated. The observations presented in this paper could be helpful as a suitable design of the PLC systems for better data transfer and system performance.

  • 8782.
    Anatory, Justinian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Theethayi, Nelson
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Thottappillil, Rajeev
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Kissaka, M.
    Mvungi, Nerey
    The effects of load impedance, line length, and branches in typical low-voltage channels of the BPLC systems of developing countries: transmission-line analyses2009In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 24, no 2, p. 621-629Article in journal (Refereed)
    Abstract [en]

    This paper presents the influence of line length, number of branches (distributed and concentrated), and terminal impedances on the performance of a low-voltage broadband power-line communication channel. For analyses, the systems chosen are typical low-voltage power-line networks found in Tanzania. The parameters varied were the network's load impedances, direct line length (from transmitter to receiver), branched line lengths, and number of branches. From the frequency responses of the transfer functions (ratio of the received and transmitted signal), it is seen that the position of notches and peaks in the amplitude responses are affected by the aforementioned network parameters and topology. As a result, the time-domain responses are attenuated and distorted. Time-domain responses of power-line channels under various conditions are also investigated for a given pulse input at the transmitter. The observations presented in this paper could be useful for suitable power-line communication system design.

  • 8783.
    Anatory, Justinian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Theethayi, Nelson
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Thottappillil, Rajeev
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Kissaka, Mussa M.
    Mvungi, Nerey H.
    An experimental validation for broadband power-line communication (BPLC) model2008In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 23, no 3, p. 1380-1383Article in journal (Refereed)
    Abstract [en]

    Recently, different models have been proposed for analyzing the broadband power-line communication (BPLC) systems based on transmission-line (TL) theory. In this paper, we make an attempt to validate one such BPLC model with laboratory experiments by comparing the channel transfer functions. A good agreement between the BPLC model based on TL theory and experiments are found for channel frequencies up to about 100 MHz. This work with controlled experiments for appropriate validation could motivate the application and extension of TL theory-based BPLC models for the analysis of either indoor or low-voltage or medium-voltage channels.

  • 8784.
    Anatory, Justinian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Theethayi, Nelson
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Thottappillil, Rajeev
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Kissaka, Mussa M.
    Mvungi, Nerey H.
    Broadband power-line communications: The channel capacity analysis2008In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 23, no 1, p. 164-170Article in journal (Refereed)
    Abstract [en]

    The power line has been proposed as a solution to deliver broadband services to end users. Various studies in the recent past have reported a decrease in channel capacity with an increase-in the number of branches for a given channel type whether it is an indoor or low-voltage (LV) or medium-voltage (MV) channel. Those studies, however, did not provide a clear insight as to how the channel capacity is related to the number of distributed branches along the line. This paper attempts to quantify and characterize the effects of channel capacity in relation to the number of branches and with different terminal loads for a given type of channel. It is shown that for a power spectral density (PSD) between -90 dBm/Hz to - 30 dBm/Hz, the channel capacity decreases by a 20-30 Mb/s/branch, 14-24 Mb/s/branch, and a 20-25 Mb/s/branch for an MV channel, LV channel, and indoor channel, respectively. It is also shown that the channel capacity is minimum when the load impedance is terminated in characteristic impedances for any type of channel treated here. It is shown that there could be a significant loss in channel capacity if a ground return was used instead of a conventional adjacent conductor return. The analysis presented in this paper would help in designing appropriate power-line communication equipment for better and efficient data transfer.

  • 8785.
    Anatory, Justinian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Theethayi, Nelson
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Thottappillil, Rajeev
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Kissaka, Mussa M.
    Mvungi, Nerey H.
    Expressions for Current/Voltage distribution in broadband power-line communication networks involving branches2008In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 23, no 1, p. 188-195Article in journal (Refereed)
    Abstract [en]

    Estimation of electromagnetic (EM)-field emissions from broadband power-line communication systems (BPLC) is necessary, because at its operating frequencies, the radiated emis sions from BPLC systems act as sources of interference/crosstalk to other radio-communication systems. Currently, the transmission-line (TL) system used for BPLC is complex, involving arbitrarily/irregularly distributed branched networks, arbitrary termination loads, varying line lengths, and line characteristic impedance. In order to study the electromagnetic-compatibility (EMC) issues associated with the radiated emissions of such complex BPLC networks, knowledge of current and voltage distributions along the length of the power-line channels is needed. This paper attempts to derive and present generalized expressions for either the current or voltage distribution along the line (whose TL parameters are known) between the transmitting and receiving ends for any line boundary condition and configuration based on the TL theory. The expressions presented in this paper could be beneficial for direct calculation of EM emissions from BPLC systems.

  • 8786.
    Anatory, Justinian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Division for Electricity and Lightning Research.
    Theethayi, Nelson
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Division for Electricity and Lightning Research.
    Thottappillil, Rajeev
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Division for Electricity and Lightning Research.
    Kissaka, Mussa
    Faculty of Electrical and Computer Systems Engineering, University of Dar es Salaam.
    Mvungi, Nerey
    Faculty of Electrical and Computer Systems Engineering, University of Dar es Salaam.
    The Effects of Load Impedance, Line Length, and Branches in the BPLC—Transmission-Line Analysis for Indoor Voltage Channel2007In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 22, no 4, p. 2150-2155Article in journal (Refereed)
    Abstract [en]

    This paper presents the effects of load impedance, line length and branches on the performance of an indoor voltage broadband power line communications (BPLC) network. The power line network topology adopted here is similar to that of the system found in Tanzania. Different investigations with regard to network load impedances, direct line length from transmitter to receiver, branched line length, and number of branches has been carried out. From the frequency response of the transfer function (ratio of the received and transmitted signal), it is seen that position of notches and peaks in the magnitude and phase responses are largely affected by the above said network parameters/configuration, mainly in terms of attenuation and dispersion. These effects are observed in the time domain responses also. The observations presented in the paper could be helpful in the suitable design of the BPLC systems for a better data transfer and system performance.

  • 8787.
    Anatory, Justinian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Theethayi, Nelson
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Thottappillil, Rajeev
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Mvungi, N. H.
    A broadband power-line communication system design scheme for typical Tanzanian low-voltage network2009In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 24, no 3, p. 1218-1224Article in journal (Refereed)
    Abstract [en]

    Information and communications technologies (ICTs) are gaining importance in developing countries. Power-line network is a potential infrastructure for ICT services provision. Power-lines are highly interconnected network with stochastic variation in number of branches. Under such distributed network conditions the design of a broadband power-line communication (BPLC) system is a challenge. In this paper a case study of an actual power-line network, representative of a low-voltage BPLC channel in Dar es Salaam, Tanzania is considered. We shall investigate the performance of such a low-voltage channel that uses orthogonal frequency division multiplexing (OFDM) technique with binary phase shift keying (BPSK) modulation scheme for communication. For sensitivity analysis, three different transmitter locations were chosen and receiver points were varied to identify the possible degraded performance scenarios. Analysis show that in the frequency bands of 100 MHz, the channel delay spread for such networks is about 4 s, giving a maximum number of subchannels 4096 with 512 cyclic prefix. To improve the degraded performance scenarios, the concatenated Reed Solomon outer code with punctured convolution inner code was applied to the network. It was found that when the branches were terminated by its corresponding characteristic impedances the performance is improved by 10-20 dB compared to a corresponding uncoded system. On the contrary for a coded system when the branches were terminated either in low or higher impedances compared to branch characteristic impedances the improvement was greater than 2-15 dB. This study demonstrates that the specification proposed by IEEE-802.16 broadband wireless access working groups can be used for performance improvement of distributed low-voltage systems.

  • 8788.
    Anatory, Justinian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Theethayi, Nelson
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Thottappillil, Rajeev
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Mwase, C.
    Mvungi, N.H.
    The Effects of Multipath on OFDM Systems for Broadband Power-Line Communications a Case of Medium Voltage Channel2009In: World Academy of Science, Engineering and Technology, ISSN 2070-3724, Vol. 54, p. 205-208Article in journal (Refereed)
    Abstract [en]

    Power-line networks are widely used today for broadband data transmission. However, due to multipaths within the broadband power line communication (BPLC) systems owing to stochastic changes in the network load impedances, branches, etc., network or channel capacity performances are affected. This paper attempts to investigate the performance of typical medium voltage channels that uses Orthogonal Frequency Division Multiplexing (OFDM) techniques with Quadrature Amplitude Modulation (QAM) sub carriers. It has been observed that when the load impedances are different from line characteristic impedance channel performance decreases. Also as the number of branches in the link between the transmitter and receiver increases a loss of 4dB/branch is found in the signal to noise ratio (SNR). The information presented in the paper

  • 8789.
    Anaya Jiménez, Lani Mireya
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Peace and Conflict Research.
    Membership matters, peace achievement matters the most… A test of complex social identities and attitudes toward peace with youth leaders from Kosovo.2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The recent United Nations Security Council Resolution 2250 on Youth, Peace, and Security highlights the importance of 18-29 years old people as positive leaders in peace and security. For a long time, research and media featured youth in conflicts either as victims, or perpetrators. Recently, some studies began promoting a better narrative based on positive-peace structural factors, e.g. development. Notwithstanding these valuable contributions, little research has empirically explored psychosocial divers of youth within conflicts. This paper studies the links between complex self-categorization processes and attitudes towards peace.

     

    Using a mixed-methods design of randomized surveys and semi-structured interviews, the research aimed to evaluate the hypothesis that youth with superordinate complex social identities (SCSI) will be more likely to have positive attitudes towards peace. The study does not find support for the hypothesis. Youth have a complex identity in which they simultaneously recognize their superordinate and in-group belonging; however, the prioritize in-group self-categorization. Young people have contact with other groups, but their empathy and trust levels are still low. Despite SCSI may not be the main driver of youth positive attitudes toward peace, rather complex identities. 

  • 8790.
    Anbo, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Division of Scientific Computing.
    Identification of extreme load cases for a surface drill rig by means of MBS simulations2010Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This master thesis is Atlas Copco Craelius’ first step in incorporating numericalmethods in load case analysis during the development process. Atlas Copco needs toconstantly evolve and refine their methods in the design process to remain as thenumber one manufacturer of mining and construction equipment. Poor knowledge ofloads results either in structural failures or in oversized structures, both very costlyfor Atlas Copco.The main goal of this thesis is to examine the potential in MBS software by using it toidentify extreme load cases in one of Atlas Copco Craelius’ surface drill rigs, Mustang5. The MBS-software ADAMS View is used to build a model of the Mustang 5 drill rigand evaluate simulation results. The rig model is subject to motions which representreal case scenarios. The feed positioning possibilities are examined thoroughly since it was expected that the positioning has impact on the load levels. 25 different feedpositioning are simulated.The main conclusion is that the load levels are highly dependent on the feedpositioning. For example, the load levels in the boom raising cylinder can increaseseven times, if the rig is operated with the most unfavorable positioning compared tothe recommended. It could also be concluded that not only one positioning isextreme in terms of loads; it depends on which part of the boom system is beingobserved. Thus, several positioning cases have to be taken into consideration in orderto optimize the design of parts in the boom system.

  • 8791.
    Anbo Berglund, Li
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences.
    Skytesvall, Linda
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences.
    Patienters inställning till att dela rum: En deskriptiv tvärsnittstudie2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    ABSTRACT

    The aim of this study was to investigate the patient´s views on their expirience and preference of sharing a patient room with other patients of the opposite sex en age.

    The metod was a deskriptive cross-sectional study with a quantitavie analyxix. A survey was conducted at two surgical departments. The sample consisted of 33 inpatients. The investigation included questions of gender and age in order to compare differances between men and women and between age groups. The differences between sexes were analysed using Mann Whitney U test and the Kruskall Wallis test was used to determine differances between age groups.

    The results showed that women felt it somewhat inconvenient to share a room with the opposite sex than men did. The women would also like to receive information about this before the were assigned a room and place. the youngest age group of 18-30 years was the most troubled by disturbed sleep compared with the two older groups.

    The conclusion was that women found it more uncomfortable to share a room with people of the opposite sex. Among age groups the youngest participants experienced that it was most embarrassing to share a room with others and especially when considering distrubed sleep. What created the most concern was when the other patients did not show respect or if they were medically worried.

  • 8792.
    Anbo, Johan
    Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Economics.
    Kan Sveriges löneökning vara högre än genomsnittet i EMU?2003Independent thesis Advanced level (degree of Master (One Year))Student thesis
  • 8793.
    Anchér, Anna
    Gotland University, School of the Humanities and Social Science.
    Modern, Intim, Beskrivande2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 8794.
    Ancikevics, Zigmunds
    et al.
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Business Studies.
    Lagat, Nelly Chemutai
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Business Studies.
    Talent attraction in Swedish Gaming Industry: An exploratory study.2019Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Researchers and practitioners have both acknowledged the importance of attracting the right employees. The study aims to explore and analyze how Swedish gaming start-ups attract talent. The authors investigated eight gaming companies based in Sweden, conducting semi-structured interviews with founding team or management team that were responsible for talent attraction in their respective companies. Study draws on theory of employer brand and examines how game development start-ups overcome their challenges in employee attraction context. Results of the research show that most gaming companies offer variety of employment benefits described in employment brand theory, but for them to have a competitive advantage, they should incorporate innovative new ideas in talent attraction. We propose an ‘employer innovation matrix model’ that can be a strategic talent attraction planning tool for companies.

  • 8795.
    Ancillotti, Mirko
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Centre for Research Ethics and Bioethics.
    John Harris. Persona, potenzialità e pre-persona2013In: Sintesi Dialettica, ISSN 2037-2957, Vol. 6, no 1Article in journal (Refereed)
    Abstract [it]

    Secondo la nozione sviluppata da John Harris è da considerare persona l’individuo che dimostri la capacità di concepire se stesso in differenti tempi e luoghi e che sia capace di desiderare di fare esperienza di una vita a cui assegna un valore. Tale concezione viene analizzata ricostruendone la genesi, chiarendo quali criteri sottendono le scelte effettuate. L’elaborazione teorica di Harris viene posta a confronto con altre due formulazioni contemporanee, sviluppate rispettivamente da Peter Singer e Vittorio Possenti. Nell’ultima parte sono stati approfonditi criticamente due concetti che emergono dalla descrizione di Harris della persona e che sono ad essa collegati, ossia i concetti di potenzialità e pre-persona.

  • 8796.
    Ancillotti, Mirko
    Graduate student, University of Pisa.
    The Value of the Pre-Person: Potentiality, Person-Maker Criteria, and Social Dimension2013In: Journal of Philosophy of Life, ISSN 2185-4505, E-ISSN 2185-4505, Vol. 3, no 3, p. 190-201Article in journal (Refereed)
    Abstract [en]

    There is a sense in distinguishing persons from other beings. Persons are forms of life towards whom an agent should feel morally responsible to the highest degree. The aim of this paper is to try and respond to the question: what line of conduct should we adopt with regard to those beings that are not persons but that we have well-founded reasons for thinking may be so in the future? The pre-persons are not, neither should they be considered as they were, persons. If we decide to guarantee their existence or well-being this decision must be based on considerations that are independent of their ontological constitution, of their actual biological status, and of the concept of potentiality. This decision can be taken only accounting for social aspects involved in the consideration of what a person is.

  • 8797.
    Ancillotti, Mirko
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Centre for Research Ethics and Bioethics.
    Eriksson, Stefan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Centre for Research Ethics and Bioethics.
    Synthetic Biology in the Press: Media Portrayal in Sweden and Italy2016In: Ambivalences of Creating Life. : Societal and Philosophical Dimensions of Synthetic Biology / [ed] K Hagen, M Engelhard & G Toepfer, Dordrecht: Springer, 2016, p. 141-156Chapter in book (Refereed)
    Abstract [en]

    Synthetic biology is a rapidly evolving field which potentially can change how we live in and understand the world. Given its potential impact it is important to inform and involve the public so that it gains a proper understanding of synthetic biology and is in a position to assess its future applications and implications. This study investigates through qualitative content analysis the synthetic biology press coverage in Sweden and Italy between 2009 and 2013. The three major newspapers of each country were considered a good example of what was offered to the public in a period which witnessed important scientific advancements of the field and consequent media resonance. The framing of the articles was analyzed in the light of the idea that mass media not only inform the public but also contribute to the shaping of ideas. Language was analysed and found to be generally adequate. The topics were presented in an overall positive and optimistic tone, which was reflected also in the benefits and risks envisioned. The two countries can be considered rather different in many social and cultural respects, yet besides a few differences (mainly quantitative), striking similarities were found, probably related to a marked dependence on the common sources of the articles and the lack of critical scrutiny on the behalf of the media.

  • 8798.
    Ancillotti, Mirko
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Centre for Research Ethics and Bioethics.
    Eriksson, Stefan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Centre for Research Ethics and Bioethics. Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Theology, Department of Theology.
    Veldwijk, Jorien
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Centre for Research Ethics and Bioethics. Institute of Health Policy and Management, Erasmus University, Bayle (J) building - Campus Woudestein, Burgemeester Oudlaan 50, 3062 PA Rotterdam, The Netherlands.
    Nihlén Fahlquist, Jessica
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Centre for Research Ethics and Bioethics.
    Andersson, Dan I
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Biochemistry and Microbiology.
    Godskesen, Tove
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Centre for Research Ethics and Bioethics. Department of Health Care Sciences, Ersta Sköndal Bräcke University College, Ersta Sköndal Bräcke högskola, Stigbergsgatan 30, 100 61 Stockholm, Sweden.
    Public awareness and individual responsibility needed for judicious use of antibiotics: a qualitative study of public beliefs and perceptions2018In: BMC Public Health, ISSN 1471-2458, E-ISSN 1471-2458, Vol. 18, no 1, article id 1153Article in journal (Refereed)
    Abstract [en]

    Background

    High consumption of antibiotics has been identified as an important driver for the increasing antibiotic resistance, considered to be one of the greatest threats to public health globally. Simply informing the public about this consequence is insufficient to induce behavioral change. This study explored beliefs and perceptions among Swedes, with the aim of identifying factors promoting and hindering a judicious approach to antibiotics use. The study focused primarily on the medical use of antibiotics, also considering other aspects connected with antibiotic resistance, such as travelling and food consumption.

    Methods

    Data were collected through focus group discussions at the end of 2016. Twenty-three Swedes were recruited using an area-based approach and purposive sampling, aiming for as heterogeneous groups as possible regarding gender (13 women, 10 men), age (range 20–81, mean 38), and education level. Interview transcripts were analyzed using qualitative content analysis. The Health Belief Model was used as a theoretical framework.

    Results

    Antibiotic resistance was identified by participants as a health threat with the potential for terrible consequences. The severity of the problem was perceived more strongly than the actual likelihood of being affected by it. Metaphors such as climate change were abundantly employed to describe antibiotic resistance as a slowly emerging problem. There was a tension between individual (egoistic) and collective (altruistic) reasons for engaging in judicious behavior. The individual effort needed and antibiotics overprescribing were considered major barriers to such behavior. In their discussions, participants stressed the need for empowerment, achieved through good health communication from authorities and family physicians.

    Conclusions

    Knowledge about antibiotic consumption and resistance, as well as values such as altruism and trust in the health care system, has significant influence on both perceptions of individual responsibility and on behavior. This suggests that these factors should be emphasized in health education and health promotion. To instead frame antibiotic resistance as a slowly emerging disaster, risks diminish the public perception of being susceptible to it.

  • 8799.
    Ancillotti, Mirko
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Centre for Research Ethics and Bioethics.
    Holmberg, Niklas
    Abo Akad Univ, Theol Eth & Philosophy Relig, Turku, Finland..
    Lindfelt, Mikael
    Abo Akad Univ, Theol Eth & Philosophy Relig, Turku, Finland..
    Eriksson, Stefan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Centre for Research Ethics and Bioethics.
    Uncritical and unbalanced coverage of synthetic biology in the Nordic press2017In: Public Understanding of Science, ISSN 0963-6625, E-ISSN 1361-6609, Vol. 26, no 2, p. 235-250Article in journal (Refereed)
    Abstract [en]

    Synthetic biology will probably have a high impact on a variety of fields, such as healthcare, environment, biofuels, agriculture, and so on. A driving theme in European research policy is the importance of maintaining public legitimacy and support. Media can influence public attitudes and are therefore an important object of study. Through qualitative content analysis, this study investigates the press coverage of synthetic biology in the major Nordic countries between 2009 and 2014. The press coverage was found to be event-driven and there were striking similarities between countries when it comes to framing, language use, and treated themes. Reporters showed a marked dependence on their sources, mainly scientists and stakeholders, who thus drives the media agenda. The media portrayal was very positive, with an optimistic look at future benefits and very little discussion of possible risks.

  • 8800.
    Ancillotti, Mirko
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Centre for Research Ethics and Bioethics.
    Rerimassie, Virgil
    Seitz, Stefanie B.
    Steurer, Walburg
    An Update of Public Perceptions of Synthetic Biology: Still Undecided?2016In: NanoEthics, ISSN 1871-4757, E-ISSN 1871-4765, Vol. 10, no 3, p. 309-325Article in journal (Refereed)
    Abstract [en]

    The discourse on the fundamental issues raised by synthetic biology, such as biosafety and biosecurity, intellectual property, environmental consequences and ethical and societal implications, is still open and controversial. This, coupled with the potential and risks the field holds, makes it one of the hottest topics in technology assessment today. How a new (bio)technology is perceived by the public influences the manner in which its products and applications will be received. Therefore, it is important to learn how people perceive synthetic biology. This work gathers, integrates and discusses the results of three studies of public perceptions of synthetic biology: (1) an analysis of existing research on how media portray synthetic biology across 13 European countries and in the USA, (2) the Meeting of Young Minds, a public debate between prospective politicians and synthetic biologists in the Netherlands and (3) the experiences of citizen panels and focus groups in Austria, the UK and the USA. The results show that the media are generally positive in their reports on synthetic biology, rather unbalanced in their view of potential benefits (emphasized) and risks (downplayed), and also heavily influenced by the sources of the stories, namely scientists and stakeholders. Among the prospective Dutch politicians, there were positive expectations as well as very negative ones. Some of these positions are also shared by participants in public dialogue experiments, such as not only the demand for information, transparency and regulation but also a sense of resignation and ineluctability of scientific and technological progress.

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