uu.seUppsala University Publications
Change search
Refine search result
1234567 151 - 200 of 391
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 151.
    Grandin, Jakob
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Uppsala Centre for Sustainable Development, Centre for Environment and Development Studies.
    Education for Sustainable Development is a Generational Issue: In search of an educational model that will not destroy the planet2011In: Transcending boundaries: How CEMUS is changing how we teach, meet and learn / [ed] Hald, Matilda, Uppsala: Cemus/CSD, Uppsala universitet, SLU , 2011, p. 42-53Chapter in book (Other (popular science, discussion, etc.))
  • 152.
    Grandin, Jakob
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Uppsala Centre for Sustainable Development, Centre for Environment and Development Studies.
    Meeting the challenges of the 21st century:  2011In: Ecoregion Perspectives, ISSN 1029-7790, no 3, p. 14-16Article in journal (Other (popular science, discussion, etc.))
  • 153.
    Grandin, Jakob
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Uppsala Centre for Sustainable Development, Centre for Environment and Development Studies.
    The Cemus model for student-run education for sustainable development2011In: Ecoregion Perspectives, ISSN 1029-7790, no 3, p. 26-27Article in journal (Other (popular science, discussion, etc.))
  • 154.
    Grandin, Jakob
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Uppsala Centre for Sustainable Development, Centre for Environment and Development Studies.
    Towards an Attractive, Sustainable and Fair Future: The up-and-coming generation’s voice on climate change: A vision from the Baltic University Programme students’ conference on climate change in Szczecin, November 2008.2008Report (Other (popular science, discussion, etc.))
  • 155.
    Grandin, Jakob
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Uppsala Centre for Sustainable Development, Centre for Environment and Development Studies.
    Utbildning för hållbar utveckling är en generationsfråga: på jakt efter en utbildningsmodell som inte förstör planeten2010In: Över gränserna: om Cemus utbildning för förändring / [ed] Hald, Matilda, Uppsala: CEMUS/CSD Uppsala, Uppsala universitet, SLU , 2010, p. 29-38Chapter in book (Other (popular science, discussion, etc.))
  • 156.
    Grandin, Jakob
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Uppsala Centre for Sustainable Development, Centre for Environment and Development Studies.
    Apine, Lilija
    Kovbasko, Oleksandra
    Zhuk, Yuliya
    Student's role in sustainable development: to create attractive and sustainable future2010In: Environment and sustainable development / [ed] Klavins, Leal Filho & Zaloksnis, Riga: University of Latvia , 2010Chapter in book (Other (popular science, discussion, etc.))
  • 157.
    Grandin, Jakob
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Uppsala Centre for Sustainable Development, Centre for Environment and Development Studies.
    Apine, Lilija
    Kovbasko, Oleksandra
    Zhuk, Yuliya
    Studentu loma ilgtspējīgā attīstībā: radīt pievilcīgu, ilgtspējīgu nākotni2010In: Vide un ilgtspējīga attīstība / [ed] Ķļaviņš, Leal Filho & Zaļoksnis, Riga: LU Akademiskais apgads, 2010, p. 307-315Chapter in book (Other (popular science, discussion, etc.))
  • 158.
    Grandin, Jakob
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Uppsala Centre for Sustainable Development, Centre for Environment and Development Studies.
    Hristov, Jordan
    The Undergraduate, Post-graduate and Post-doc Perspective on Education and Career Opportunities in Development Research2009In: Meeting Global Challenges in Research Cooperation: report from a conference and workshop in Uppsala / [ed] Karlsson & Röing de Nowina, Uppsala: The Collegium for Development Studies/CSD Uppsala, Uppsala University , 2009, p. 28-32Chapter in book (Other (popular science, discussion, etc.))
  • 159.
    Gulda K, Kurcewicz W, Aas AJ, Borge MJG, Burke DG, Fogelberg B, Grant IS, Hagebo E, Kaffrell N, Kvasil J, Lovhoiden G, Mach H, Mackova A, Martinez T, Nyman G, Rubio B, Tain JL, Tengblad O, Thorsteinsen TF and the ISOLDE Collaboration
    Uppsala University, Interfaculty Units, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    The Nuclear Structure of 229Th2002In: Nucl. Phys. 2002, Vol. A703, p. 45-Article in journal (Refereed)
  • 160. Hagelstein, M.
    et al.
    Vollath, D.
    Szabo, D. V.
    Borowski, M.
    Ferrero, C.
    Fitch, A. N.
    Boesecke, P.
    Rennie, Adrian
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory. Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Neutron Research.
    Characterization of PMA-coated, nanocrystalline gamma-Fe2O3 with synchrotron radiation techniques2002In: European Physical JournalArticle in journal (Refereed)
  • 161.
    Hajdu, Flora
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Uppsala Centre for Sustainable Development, Centre for Environment and Development Studies.
    Ansell, Nicola
    Robson, Elsbeth
    Van Blerk, Lorraine
    Chipeta, Lucy
    Income-generating activities for young people in southern Africa: Exploring AIDS and other constraints2011In: Geographical Journal, ISSN 0016-7398, E-ISSN 1475-4959, Vol. 177, no 3, p. 251-263Article in journal (Refereed)
    Abstract [en]

    This paper reports on a study with rural young people (aged 10-24 years) in Malawi and Lesotho, focusing on their opportunities to learn skills and access capital and assets to engage in income-generating activities (IGAs). Participatory group exercises and individual interviews provide many examples of how young people learn skills and start small businesses, as well as an insight into their strategic thinking about engaging in these livelihood options. Various factors, including the effects of AIDS, are shown to affect young people's prospects of succeeding in their ventures. Young people are very keen on starting IGAs, and are supported by adult members of their communities in asking for interventions to help them. We argue that expanded vocational and business training, focusing on locally appropriate types and scale of businesses, coupled with help to raise start-up capital has the potential to improve the chances of young people who are poor and/or AIDS-affected securing sustainable rural livelihoods in their futures. Since AIDS is intertwined with many other issues affecting young people's livelihoods, it is problematic to single out and target only AIDS-affected young people with interventions on skills building and IGAs. Policymakers' attitudes to vocational skills training and support for IGAs in Malawi and Lesotho are also explored, and policy recommendations made to support vulnerable rural young people in their attempts to build sustainable livelihoods.

  • 162. Hakansson, Lena
    et al.
    Briner, Jason P.
    Aldahan, Ala
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
    Possnert, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
    (10)Be data from meltwater channels suggest that Jameson Land, east Greenland, was ice-covered during the last glacial maximum2011In: Quaternary Research, ISSN 0033-5894, E-ISSN 1096-0287, Vol. 76, no 3, p. 452-459Article in journal (Refereed)
    Abstract [en]

    Along the northeast Greenland continental margin, bedrock on interfjord plateaus is highly weathered, whereas rock surfaces in fjord troughs are characterized by glacial scour. Based on the intense bedrock weathering and lack of glacial deposits from the last glaciation, interfjord plateaus have long been thought to be ice-free throughout the last glacial maximum (LGM). In recent years there is growing evidence from shelf and fjord settings that the northeast Greenland continental margin was more extensively glaciated during the LGM than previously thought. However, little is still known from interfjord settings. We present cosmogenic (10)Be data from meltwater channels and weathered sandstone outcrops on Jameson Land, an interfjord highland north of Scoresby Sund. The mean exposure age of samples from channel beds (n = 3) constrains on the onset of deglaciation on interior Jameson Land to 18.5 +/- 1.3-21.4 +/- 1.9 ka (for erosion conditions of 0-10 mm/ka, respectively). This finding adds to growing evidence that the northeast Greenland continental margin was more heavily glaciated during the LGM than previously thought.

  • 163.
    Halldin, Sven
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
    Bynander, Fredrik
    van Groningen, Ernst
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, International Science Programme (ISP).
    Preface: Natural Disaster Science: A Nordic Approach to Integrated Research on Disaster Risk2015In: Geografiska Annaler. Series A, Physical Geography, ISSN 0435-3676, E-ISSN 1468-0459, Vol. 97, no 1, p. 1-7Article in journal (Other academic)
  • 164.
    Hambsch, F.-J., F. Tovesson, S. Oberstedt, V. Frisch, A. Oberstedt, B. Fogelberg, and E. Ramström
    Uppsala University, Interfaculty Units, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    First measurement of the 233Pa Fission Cross Section.2003In: 10th International Seminar on Interaction of Neutrons with Nuclei. Neutron Spectroscopy, Nuclear Structure, Related Topics, 2003 202, 2003, p. 202-Conference paper (Refereed)
  • 165.
    Hambsch, F.-J., Tovesson, F., Oberstedt, S., Oberstedt, A., Fogelberg, B. and Ramström, E.
    Uppsala University, Interfaculty Units, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory. Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Nuclear and Particle Physics.
    First Direct Measurements of the 233Pa Fission Cross Section up to 8.5 MeV2002Conference paper (Refereed)
  • 166. Hansen, Violeta
    et al.
    Roos, Per
    Aldahan, Ala
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
    Hou, Xiaolin
    Possnert, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
    Partition of iodine ((129)I and (127)I) isotopes in soils and marine sediments2011In: Journal of Environmental Radioactivity, ISSN 0265-931X, E-ISSN 1879-1700, Vol. 102, no 12, p. 1096-1104Article in journal (Refereed)
    Abstract [en]

    Natural organic matter, such as humic and fulvic acids and humin, plays a key role in determining the fate and mobility of radioiodine in soil and sediments. The radioisotope (129)I is continuously produced and released from nuclear fuel reprocessing plants, and as a biophilic element, its environmental mobility is strongly linked to organic matter. Due to its long half-life (15.7 million years), (129)I builds up in the environment and can be traced since the beginning of the nuclear era in reservoirs such as soils and marine sediments. Nevertheless, partition of the isotope between the different types of organic matter in soil and sediment is rarely explored. Here we present a sequential extraction of (129)I and (127)I chemical forms encountered in a Danish soil, a soil reference material (IAEA-375), an anoxic marine sediment from Southern Norway and an oxic sediment from the Barents Sea. The different forms of iodine are related to water soluble, exchangeable, carbonates, oxides as well as iodine bound to humic acid, fulvic acid and to humin and minerals. This is the first study to identify (129)I in humic and fulvic acid and humin. The results show that 30-56% of the total (127)I and 42-60% of the total (129)I are associated with organic matter in soil and sediment samples. At a soil/sediment pH below 5.0-5.5, (127)I and (129)I in the organic fraction associate primarily with the humic acid while at soil/sediment pH > 6 (129)I was mostly found to be bound to fulvic acid. Anoxic conditions seem to increase the mobility and availability of iodine compared to oxic, while subaerial conditions (soils) reduces the availability of water soluble fraction compared to subaqueous (marine) conditions.

  • 167. Hansen, Violeta
    et al.
    Yi, Peng
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
    Hou, Xiaolin
    Aldahan, Ala
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
    Roos, Per
    Possnert, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
    Iodide and iodate ((129)I and (127)I) in surface water of the Baltic Sea, Kattegat and Skagerrak2011In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 412, p. 296-303Article in journal (Refereed)
    Abstract [en]

    Despite the common incorporation of iodine in the biological cycle and occurrence of huge contamination of the radioactive isotope (129)I in the Baltic Proper, Skagerrak and Kattegat, there is no data on chemical speciation of iodine in these waters. We here present first time data on iodine isotopes (129)I and (127)I species as iodide and iodate in surface seawater samples collected from 16 locations in August 2006 and 19 locations in April 2007 in the Baltic Proper, Skagerrak and Kattegat. After extensive separation methods, the isotopes concentrations were determined using accelerator mass spectrometry (AMS) technique for the (129)I and inductively coupled plasma mass spectroscopy (ICP-MS) for (127)I. High concentrations of both isotopes species were found in the Skagerrak-Kattegat basins, whereas the values in the Baltic Proper are low for both species. The ratios of (129)I(-)/(129)IO(3)(-) and (127)I-/(127)IO(3)(-) significantly increase from south to central Baltic Sea, and iodide (both isotopes) appears as the predominant inorganic iodine species along the Baltic Sea. The results show insignificant change in (129)I and (127)I speciation and suggest that reduction of iodate and oxidation of iodide in Skagerrak and Kattegat may be a slow process. Additionally, the positive correlation between salinity and iodide and iodate (both isotopes) may reflect effective control of Skagerrak water mass on iodine distribution in surface water of the Baltic Sea.

  • 168.
    Haussmann, Natalie
    et al.
    Department of Conservation Ecology and Entomology, Stellenbosch University, South Africa.
    Aldahan, Ala
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
    Boelhouwers, Jan
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
    Possnert, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
    10Be application to soil development on Marion Island, southern Indian Ocean2010In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, ISSN 0168-583X, E-ISSN 1872-9584, Vol. 268, no 7-8, p. 1058-1061Article in journal (Refereed)
    Abstract [en]

    Marion Island, located in the southern Indian Ocean, constitutes the summit of an active shield volcano. It is a small terrestrial environment where glacially abraded bedrock became exposed c × 10 kyr ago. These conditions provide an interesting possibility for the assessment of 10Be accumulation rates and their application to soil erosion studies on the island. 10Be concentrations were measured in precipitation, soil profiles and an Azorella selago cushion plant. The data reveal a 10Be precipitation flux several times higher than model prediction. Estimation of the 10Be accumulation based on the soil inventory suggests a span between 2000 and 7000 yr. This time span is not in accordance with the accepted notion that the island was covered with ice about 10,000 yr ago and suggests either removal of 10Be from the soil profile, an overestimated Holocene 10Be-flux or a delayed soil development history. Our results provide new data on 10Be concentrations from the sub-Antarctic islands and contribute towards enlarging the southern-hemisphere 10Be database.

  • 169.
    He, Peng
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
    Aldahan, A.
    Possnert, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
    Hou, X. L.
    A summary of global 129I in marine waters2013In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, ISSN 0168-583X, E-ISSN 1872-9584, Vol. 294, p. 537-541Article in journal (Refereed)
    Abstract [en]

    Despite the many investigations concerning the occurrence of anthropogenic iodine-129 in the atmosphere, terrestrial and marine environments, there is a lack of a comprehensive collection of data on the distribution of the isotope in marine waters. The temporal and spatial variability of anthropogenic 129I is strongly linked to the major point sources in the Irish Sea and the English Channel and the global marine spreading pathways are partly outlined from these sources. The temporal evolution is still, however, not well defined when transport and dissipation are considered in the different oceans and ocean compartments. We here summarize available published literature data on 129I temporal and spatial distribution in the global marine water. The results show presence of numerous data sets for the North Atlantic and Arctic Oceans where strong variability in terms of water depth, time and location also occur. Scarcity of data on 129I from the Pacific, Indian and South Atlantic Oceans demonstrates gaps in the coverage of the isotope spatial extent. These shortcomings in the spatial coverage may relate to the understanding that the anthropogenic 129I signal will take a long time to be transported, if at all, from the North Atlantic into other oceans. Data from recent expeditions in the Southern oceans and the Geotraces ocean profiling will reveal additional information about 129I distribution in the marine waters.

  • 170.
    He, Peng
    et al.
    Chengdu Univ Technol, Dept Earth Sci, Chengdu 610059, Peoples R China..
    Aldahan, Ala
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences. United Arab Emirates Univ, Dept Geol, Al Ain, U Arab Emirates..
    Hou, Xiaolin
    Tech Univ Denmark, Ctr Nucl Technol, Riso Campus, DK-4000 Roskilde, Denmark.;Chinese Acad Sci, Xian AMS Ctr, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710075, Peoples R China..
    Possnert, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
    Tracing variability in the iodine isotopes and species along surface water transect from the North Sea to the Canary Islands2016In: Journal of Radioanalytical and Nuclear Chemistry, ISSN 0236-5731, E-ISSN 1588-2780, Vol. 307, no 2, p. 1407-1412Article in journal (Refereed)
    Abstract [en]

    A complete transect of surface water samples from the North Sea to the Canary Islands was collected during a continuous period in 2010. The samples were analyzed for total I-129 and I-127 isotopes and their iodide and iodate species. The results indicate a large variability in the total I-129 and its species along the transect, whereas less change and variation are observed for the total I-127 and its species. Transport of I-129 fromthe western English Channel via Biscay Bay is the main source of I-129 in the northeastern Atlantic Ocean.

  • 171.
    He, Peng
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
    Aldahan, Ala
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
    Possnert, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
    Hou, Xiaolin
    Temporal variation of iodine isotopes in the North Sea2014In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 48, no 3, p. 1419-1425Article in journal (Refereed)
  • 172.
    He, Peng
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
    Hou, Xiaolin
    Aldahan, Ala
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
    Possnert, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
    Yi, Peng
    Iodine isotopes species fingerprinting environmental conditions in surface water along the northeastern Atlantic Ocean2013In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 3, p. 2685-Article in journal (Refereed)
    Abstract [en]

    Concentrations and species of iodine isotopes (I-127 and I-129) provide vital information about iodine geochemistry, environmental conditions and water masses exchange in oceans. Despite extensive investigations of anthropogenic I-129 in the Arctic Ocean and the Nordic Seas, concentrations of the isotope in the Atlantic Ocean are, however, still unknown. We here present first data on I-129 and I-127, and their species (iodide and iodate) in surface water transect along the northeastern Atlantic between 30 degrees and 50 degrees N. The results show iodate as the predominant species in the analyzed marine waters for both I-127 and I-129. Despite the rather constant ratios of I-127(-)/(IO3-)-I-127, the I-129(-)/(IO3-)-I-129 values reveal variations that apparently response to sources, environmental conditions and residence time. These findings provide a new tracer approach that will strongly enhance the application of anthropogenic I-129 in ocean environments and impact on climate at the ocean boundary layer.

  • 173.
    Hedfors, Jim
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
    Aldahan, Ala
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
    Possnert, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
    Clouds and beryllium-72010In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, ISSN 0168-583X, E-ISSN 1872-9584, Vol. 268, no 7-8, p. 1129-1134Article in journal (Refereed)
    Abstract [en]

    We present a 10-year record of 10 different cloud cover types at three different locations in Scandinavia together with Be-7 surface concentration data. The aim is to estimate the degree of correlation, if any, between various cloud types at different latitudes and measured Be-7 concentrations. The study matches weekly Be-7 data to cloud raster data from high resolution multispectral satellite sensors recorded on a monthly basis between 1991 and 2001. The results are presented as a Be-7 correlation coefficient and show a consistent pattern with small variations across the latitudes and rather large variations between the different cloud classes. The strongest coherence is inverse and associated with Be-7 and high-level clouds (cumulonimbus and nimbostratus), generally, at low latitudes while mid-level clouds (altocumulus, altostratus and cumulus congestus) show little (insignificant) correlation. Despite variable correlation trends, merging of the two data sets has proven valuable in order to understand aerosols-Be-7 (and likely Be-10) correlation to different cloud types.

  • 174. Heinola, K.
    et al.
    Andersson Sundén, Erik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Binda, F.
    Cecconello, Marco
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Conroy, Sean
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Dzysiuk, N.
    Ericsson, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Eriksson, Jacob
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Hellesen, C.
    Hjalmarsson, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Possnert, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics. Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
    Sjöstrand, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Skiba, M.
    Weiszflog, Matthias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Zychor, I.
    Modelling of the effect of ELMs on fuel retention at the bulk W divertor of JET2019In: Nuclear Materials and Energy, E-ISSN 2352-1791, Vol. 19, p. 397-402Article in journal (Refereed)
    Abstract [en]

    Effect of ELMs on fuel retention at the bulk W target of JET ITER-Like Wall was studied with multi-scale calculations. Plasma input parameters were taken from ELMy H-mode plasma experiment. The energetic intra-ELM fuel particles get implanted and create near-surface defects up to depths of few tens of nm, which act as the main fuel trapping sites during ELMs. Clustering of implantation-induced vacancies were found to take place. The incoming flux of inter-ELM plasma particles increases the different filling levels of trapped fuel in defects. The temperature increase of the W target during the pulse increases the fuel detrapping rate. The inter-ELM fuel particle flux refills the partially emptied trapping sites and fills new sites. This leads to a competing effect on the retention and release rates of the implanted particles. At high temperatures the main retention appeared in larger vacancy clusters due to increased clustering rate.

  • 175. Henderson, M. J.
    et al.
    Gibaud, A.
    Bardeau, J.-F.
    Rennie, A. R.
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    White, J. W.
    A zirconium oxide film self-assembled at the air-water interface2005In: Physica. B, Condensed matter, ISSN 0921-4526, E-ISSN 1873-2135, Vol. 357, no 1-2, p. 27-33Article in journal (Refereed)
  • 176. Henderson, M. J.
    et al.
    Rennie, Adrian
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    Hawley, A. M.
    White, J. W.
    Swelling of a mesostructured zirconium oxide film2006In: Physica. B, Condensed matter, ISSN 0921-4526, E-ISSN 1873-2135, Vol. 385, p. 713-715Article in journal (Refereed)
    Abstract [en]

    The structural changes that cause the change in interlayer spacing of a surfactant-templated zirconium oxide film have been studied using neutron diffractometry. We report that the film after drying on a glass substrate swells slightly through the addition of benzene by up to 4 Å on a lattice parameter of about 36 Å. The (0 0 1) and (0 0 2) diffraction peak widths, positions and areas of a swollen film were monitored as a function of benzene desorption. Disorder of the lamellar mesophase is considered as a cause of the observed effects on the diffraction signals.

  • 177. Ho, A.
    et al.
    Andersson Sundén, Erik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Binda, F.
    Cecconello, Marco
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Conroy, Sean
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Dzysiuk, N.
    Ericsson, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Eriksson, Jacob
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Hellesen, C.
    Hjalmarsson, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Possnert, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics. Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
    Sjöstrand, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Skiba, M.
    Weiszflog, Matthias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Zychor, I.
    Application of Gaussian process regression to plasma turbulent transport model validation via integrated modelling2019In: Nuclear Fusion, ISSN 0029-5515, E-ISSN 1741-4326, Vol. 59, no 5, article id 056007Article in journal (Refereed)
    Abstract [en]

    This paper outlines an approach towards improved rigour in tokamak turbulence transport model validation within integrated modelling. Gaussian process regression (GPR) techniques were applied for profile fitting during the preparation of integrated modelling simulations allowing for rigourous sensitivity tests of prescribed initial and boundary conditions as both fit and derivative uncertainties are provided. This was demonstrated by a JETTO integrated modelling simulation of the JET ITER-like-wall H-mode baseline discharge #92436 with the QuaLiKiz quasilinear turbulent transport model, which is the subject of extrapolation towards a deuterium-tritium plasma. The simulation simultaneously evaluates the time evolution of heat, particle, and momentum fluxes over similar to 10 confinement times, with a simulation boundary condition at rho(tor) = 0.85. Routine inclusion of momentum transport prediction in multi-channel flux-driven transport modelling is not standard and is facilitated here by recent developments within the QuaLiKiz model. Excellent agreement was achieved between the fitted and simulated profiles for n(e), T-e, T-i, and Omega(tor) within 2 sigma, but the simulation underpredicts the mid-radius Ti and overpredicts the core n(e) and T-e profiles for this discharge. Despite this, it was shown that this approach is capable of deriving reasonable inputs, including derivative quantities, to tokamak models from experimental data. Furthermore, multiple figures-of-merit were defined to quantitatively assess the agreement of integrated modelling predictions to experimental data within the GPR profile fitting framework.

  • 178. Hossain, S.
    et al.
    Truman, C. E.
    Smith, D. J.
    Peng, Ru Lin
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    Stuhr, U.
    A study of the generation and creep relaxation of triaxial residual stresses in stainless steel2007In: International Journal of Solids and Structures, ISSN 0020-7683, E-ISSN 1879-2146, Vol. 44, no 9, p. 3004-3020Article in journal (Refereed)
    Abstract [en]

    This paper presents results from a numerical and experimental research programme motivated by the need to predict creep damage generated by multi-axial states of stress in austenitic stainless steels. It has been hypothesized that highly triaxial residual stress fields may be sufficient to promote creep damage in thermally aged components, even in the absence of in-service loads. Two prerequisites to test this hypothesis are the provision of test specimens containing a highly triaxial residual stress field and an accurate knowledge of how this residual stress field relaxes due to creep. Creep damage predictions may then be made for these specimens and compared to damage observed in experiments. This paper provides solutions to both of these prerequisites. Cylindrical and spherical test specimens made from type 316H stainless steel are heated to 850 degrees C and then quenched in water. Finite element predictions of the residual stress state, validated by extensive neutron diffraction measurements, are presented which confirm the high level of triaxiality present in the specimens. The specimens are then thermally aged at 550 degrees C and numerical predictions of the residual stress relaxation are given, again validated by extensive neutron diffraction measurements. The results confirm the validity of the creep relaxation models employed. In addition, the results show the influence of specimen size and permit comparisons to be made between three different types of neutron diffractometers.

  • 179. Hou, Xiaolin
    et al.
    Hansen, Violeta
    Aldahan, Ala
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Possnert, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Ion Physics. Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
    Lind, Ole Christian
    Lujaniene, Galina
    A review on speciation of iodine-129 in the environmental and biological samples2009In: Analytica Chimica Acta, ISSN 0003-2670, E-ISSN 1873-4324, Vol. 632, no 2, p. 181-196Article, review/survey (Refereed)
    Abstract [en]

    As a long-lived beta-emitting radioisotope of iodine, I-129 is produced both naturally and as a result of human nuclear activities. At present time, the main part of I-129 in the environment originates from the human nuclear activity, especially the releases from the spent nuclear fuel reprocessing plants, the I-129/I-127 ratios have being reached to values of 10(-10) to 10(-4) in the environment from 10(-12) in the pre-nuclear era. In this article, we review the occurrence, sources, inventory, and concentration level of I-129 in environment and the method for speciation analysis of I-129 in the environment. Measurement techniques for the determination of I-129 are presented and compared. An overview of applications of I-129 speciation in various scientific disciplines such as radiation protection, waste depository, and environmental sciences is given. In addition, the bioavailability and radiation toxicity (close to thyroid) of I-129 are discussed.

  • 180.
    Howe M A, McGreevy R L, Zetterström P
    Uppsala University, Interfaculty Units, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory. Uppsala University, Interfaculty Units, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    CORRECT: A correction program for neutron diffraction data1996In: NFL Studsvik internal reportReport (Other scientific)
  • 181. Huber, V
    et al.
    Andersson Sundén, Erik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Binda, Federico
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Cecconello, Marco
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Conroy, Sean
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Dzysiuk, Nataliia
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Ericsson, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Eriksson, Jacob
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Hellesen, Carl
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Hjalmarsson, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Possnert, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics. Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
    Sjöstrand, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Skiba, Mateusz
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Weiszflog, Matthias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Zychor, I.
    The software and hardware architecture of the real-time protection of in-vessel components in JET-ILW2019In: Nuclear Fusion, ISSN 0029-5515, E-ISSN 1741-4326, Vol. 59, no 7, article id 076016Article in journal (Refereed)
    Abstract [en]

    For the first time, the JET operation in deuterium-tritium (D-T) plasma, which is scheduled to take place on JET in 2020, will be performed in the ITER mix of plasma-facing component materials. In view of the preparation of the DT campaign (DTE2), several aspects of the plasma operation require significant improvements, such as a real-time protection of the first wall. The risk of damaging the metallic PFCs caused by beryllium melting or cracking of tungsten owing to thermal fatigue required a new reliable D-T compatible active protection system. Therefore, the future development of the JET real time first wall protection is focused on the D-T campaign and the ITER relevant conditions which may cause failure of camera electronics within the Torus hall. In addition to the technological aspect, the intensive preparation of the diverse software tools and real time algorithms for hot spot detection as well as alarm handling strategy required for the wall protection is in progress. This contribution describes the improved design, implementation, and operation of the near infrared (NIR) imaging diagnostic system of the JET-ILW plasma experiment and its integration into the existing JET protection architecture. To provide the reliable wall protection during the DTE2, two more sensitive logarithmic NIR camera systems equipped with new optical relays to take images and cameras outside of the biological shield have been installed on JET-ILW and calibrated with an in-vessel calibration light source (ICLS). Additionally, post-pulse data visualization and advanced analysis of all types of imaging data is provided by the new software framework JUVIL (JET users video imaging library). The formation of hot spots is recognized as a significant threat due to rapid surface temperature rise. Because it could trigger the protection system to stop a pulse, it is important to identify the mechanisms and conditions responsible for the formation of such hot spots. To address this issue the new software tool ` Hotspot Editor' has been developed.

  • 182.
    Inceoglu, F.
    et al.
    Aarhus Univ, Dept Phys & Astron, Stellar Astrophys Ctr, Aarhus, Denmark.;Aarhus Univ, Dept Geosci, Aarhus, Denmark..
    Knudsen, M. F.
    Aarhus Univ, Dept Geosci, Aarhus, Denmark..
    Olsen, J.
    Aarhus Univ, Dept Phys, AMS, Dating Ctr 14C, Aarhus, Denmark..
    Karoff, C.
    Aarhus Univ, Dept Phys & Astron, Stellar Astrophys Ctr, Aarhus, Denmark.;Aarhus Univ, Dept Geosci, Aarhus, Denmark..
    Herren, P. -A
    Schwikowski, M.
    Paul Scherrer Inst, Villigen, Switzerland.;Univ Bern, Oeschger Ctr Climate Change Res, Bern, Switzerland..
    Aldahan, Ala
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences. United Arab Emirates Univ, Dept Geol, Al Ain, U Arab Emirates..
    Possnert, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
    A continuous ice-core Be-10 record from Mongolian mid-latitudes: Influences of solar variability and local climate2016In: Earth and Planetary Science Letters, ISSN 0012-821X, E-ISSN 1385-013X, Vol. 437, p. 47-56Article in journal (Refereed)
    Abstract [en]

    High-resolution Be-10 records used for studies of detailed changes in atmospheric Be-10 production rates predominantly derive from polar ice cores. In this study, we present the first Be-10 record from a mid latitude ice core. The ice core derives from the Tsambagarav mountain range located in the Mongolian Altai region. The new Be-10 concentration record spans the period from AD 1550 to 2009, while the flux record extends from AD 1816 to 2009. The Be-10 concentration in the Tsambagarav ice core ranges between similar to 1.5 x 10(4) and similar to 10 x 10(4) atoms g(-1), whereas the Be-10 flux changes from similar to 0.02 to similar to 0.15 atoms cm(-2) s(-1) The average Be-10 flux at Tsambagarav is four times higher than the average Be-10 flux recorded in the NGRIP and Dome Fuji ice cores, which is in accordance with model predictions. In general, the long-term trends observed in the Tsambagarav Be-10 concentration and flux records are reasonably similar to those observed in the NGRIP ice core. A comparison between the Tsambagarav Be-10 record, group sunspot numbers (GSNs), and solar modulation potentials based on C-14 in tree rings suggests that the Maunder Minimum was associated with a prolonged maximum in Be-10 concentrations at Tsambagarav, whereas the Dalton Minimum was associated with a minor increase in the Be-10 concentration and flux that was delayed relative to the primary minimum in GSNs. The sulphate record from Tsambagarav shows that large positive anomalies in the sulphate concentration are associated with negative anomalies in the Be-10 concentration. A concurrent positive sulphate anomaly may explain why the main phase of the Dalton Minimum is subdued in the Be-10 record from Tsambagaray. Spectral analysis indicates that the 11-yr solar-cycle signal may have influenced the new Be-10 record, but the evidence supporting a direct link is ambiguous. Local and regional climatic changes, such as cyclonic versus anticyclonic conditions and related storm tracks, most likely played a significant role for the Be-10 deposition in the Tsambagarav region.

  • 183.
    Isakov, V.I., Erokhina, K.I., Mach, H., Sanchez-Vega, M., Fogelberg, B.
    Uppsala University, Interfaculty Units, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    On the Difference between Proton and Neutron Spin-Orbit Splittings in Nuclei2002In: Eur. Phys. J., Vol. A 14, p. 29-Article in journal (Refereed)
  • 184.
    Ivanov, S. A., Eriksson, S.- G., Tellgren, R., Rundlöf, H.
    Uppsala University, Interfaculty Units, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    Neutron powder diffraction study of structural phase transitions in some ferroelectric complex metal oxides2002In: Applied Physics, Vol. A74 [Suppl.], p. 698-Article in journal (Refereed)
  • 185.
    Ivanov, SA
    et al.
    Uppsala University, Interfaculty Units, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    Eriksson, S-G
    Stefanovich, SY
    Voronkova, VI
    Losevskaya, TY
    Yanovskii, VK
    Tellgen, R
    Rundlöf, H
    Ferroelectric phase transitions in Nb-doped KTiOPO42002In: Applied Physics, Vol. A74 [Suppl.], p. 632-Article in journal (Refereed)
  • 186.
    Ivanov, SA
    et al.
    Uppsala University, Interfaculty Units, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory. Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry, Structural Chemistry.
    Eriksson, S-G
    Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry, Structural Chemistry.
    Stefanovich, SY
    Voronkova, VI
    Losevskaya, TY
    Yanovskii, VK
    Tellgren, Roland
    Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry, Structural Chemistry. strukturkemi.
    Rundlöf, Håkan
    Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry, Structural Chemistry. strukturkemi.
    Ferroelectric phase transitions in Nb-doped KTiOPO42001In: Ferroelectrics, Vol. in pressArticle in journal (Refereed)
  • 187. Ivanov, S.A.
    et al.
    Eriksson, S-G.
    Tellgren, Roland
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Structural Chemistry.
    Rundlöf, Håkan
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Structural Chemistry.
    Nordblad, Per
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
    Eriksen, Jytte
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    Ba3Fe2WO9-delta: Effect of oxygen non-stoichiometry on structural and magnetic properties2006In: Journal of Solid State Chemistry, ISSN 0022-4596, E-ISSN 1095-726X, Vol. 179, no 8, p. 2645-2655Article in journal (Refereed)
    Abstract [en]

    The magnetic and structural properties of oxygen-deficient perovskites with composition Ba3Fe2WO9-6 (BFWO) have been systematically studied for two different oxygen contents corresponding to delta = 0.00 and 0.55 in the chemical formula in order, to determine and correlate their chemical composition, structural and magnetic properties. The evolution of nuclear and magnetic structures with temperature has been investigated by neutron powder diffraction. It was shown that at room temperature the stoichiometric compound (delta = 0.00) adopts a hexagonal 6H-perovskite structure (space group P6(3)/mmc). This phase, when heated at high temperature under a stream of Ar gas, transforms to an oxygen-deficient phase delta = 0.55), which is an ordered cubic perovskite structure (space group Fm-3m). The crystallographic and magnetic properties of the obtained phases are compared, and it is clear that the magnetic properties are significantly affected by oxygen non-stoichiometry. These changes of magnetic properties for such a slight decrease in oxygen content are interpreted as a result of structural transformations. Together with the experimental results based on neutron powder diffraction data a discussion of some aspects of the structural transformation (P6(3)/mmc -> Fm-3m) is presented.

  • 188.
    Ivanov, SA
    et al.
    Uppsala University, Interfaculty Units, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory. Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry, Structural Chemistry.
    Eriksson, S-G
    Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry, Structural Chemistry.
    Thomas, NW
    Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry, Structural Chemistry.
    Tellgen, Roland
    Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry, Structural Chemistry. strukturkemi.
    Rundlöf, Håkan
    Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry, Structural Chemistry.
    Relaxor ferroelectric complex perovskites: features of atomic and magnetic structure2001In: Materials Science Forum, Vol. 378-381, p. 517-Article in journal (Refereed)
  • 189.
    Jakobsson, Christine
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Uppsala Centre for Sustainable Development.
    1 Definitions of the ecosystems approach and sustainability2012In: Sustainable Agriculture / [ed] Christine Jakobsson, Uppsala: Baltic University Press , 2012, 1, p. 13-15Chapter in book (Other (popular science, discussion, etc.))
  • 190.
    Jakobsson, Christine
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Uppsala Centre for Sustainable Development, The Baltic University Programme.
    61 Focus on Nutrients: Advisory Service, Training and Information2012In: Sustainable Agriculture / [ed] Christine Jakobsson, Uppsala: Baltic University Press , 2012, 1500, p. 461-466Chapter in book (Other (popular science, discussion, etc.))
  • 191.
    Jakobsson, Christine
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Uppsala Centre for Sustainable Development, The Baltic University Programme.
    Steineck, Staffan
    Swedish University of Agricultural Scieces and JTI.
    15 Management of Manure on the Farm: One of the Keys to the Future2012In: Sustainable Agriculture / [ed] Christine Jakobsson, Uppsala: Baltic University Press , 2012, 1500, p. 125-131Chapter in book (Other (popular science, discussion, etc.))
  • 192.
    Jakobsson, Christine
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Uppsala Centre for Sustainable Development, The Baltic University Programme.
    Steineck, Staffan
    Swedish University of Agricultural Sciences.
    4 Plant Nutrient Management, Livestock Density, Agricultural Structure and the Environment2012In: Sustainable Agriculture / [ed] Christine Jakobsson, Uppsala: Baltic University Press , 2012, 1, p. 30-41Chapter in book (Other (popular science, discussion, etc.))
  • 193.
    Johansson, Rebecca
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Uppsala Centre for Sustainable Development, Centre for Environment and Development Studies.
    Evaluation of Experiences from using CEEQUAL in Infrastructure Projects: A case study of the Crossrail programme and the Olympic Park2011Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    CEEQUAL is a British assessment and award scheme for improving sustainability in civil engineering and the public realm. The scheme was developed in 2003 and has gained recognition in the UK and Ireland. The interest in CEEQUAL is starting to spread to the rest of Europe and to the Swedish Transport Administration.  

    The aim of this thesis is to evaluate the scheme from the perspective of the experience of implementation using two case studies in the UK – a road project and a railway project. The road project is represented by a subordinated project within the Olympic Park, a development for the London 2012 Olympic Games. The railway project that is being studied is the Crossrail programme, a large railway project in London.

    The objectives for this thesis are to:

    • Review experiences from CEEQUAL awarded projects and to evaluate what additional sustainability benefits the award has given infrastructure projects compared to using normal standards.
    • Identify costs and resources required for a CEEQUAL Award.
    • Identify if it is possible for clients to require the use of CEEQUAL and stipulate a certain rating.

    The results from the two case studies are analysed and applied on the Swedish Transport Administration, together with information about CEEQUAL and the definition on sustainable development.

    Some of the conclusions of this thesis are:

    • That the effect CEEQUAL will have on a project’s sustainability performance depends on what the normal standards are as well as the client’s requirements.
    • The CEEQUAL scheme provides structure for projects to work with environmental and social issues.
    • CEEQUAL makes social issues more visible and creditable.
    • There is need for something that complements CEEQUAL to be able to say anything about project’s environmental impact, for example EPD or Carbon foot printing.
    • It is important that CEEQUAL is a part of the working process otherwise it will cost extra time and money to do the assessment.
    • It is possible for clients to have CEEQUAL as one of the requirement within the procurement process. It is also possible to require that a project is delivered with a certain CEEQUAL rating.

    Finally, my recommendation to the Swedish Transport Administration is to use CEEQUAL and apply for the award for different representative project and implement the CEEQUAL-thinking in their normal standards for all projects. If they register certain selected projects they can meet the requirements from the government commission and this can also work as a way to calibrate how they are performing on environmental and social issues to the rest of the industry. CEEQUAL can also work as an environmental quality assurance in projects where EIA isn’t mandatory.

  • 194.
    Johansson, S
    et al.
    Uppsala University, Interfaculty Units, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    Zeng, XH
    Andersson, NE
    Peng, RL
    Measurement of average texture of cold-rolled aluminium sheet by electron back-scattering diffraction: a comparison with neutron diffraction2001In: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, ISSN 0921-5093, Vol. 315, no 1-2, p. 129-135Article in journal (Refereed)
    Abstract [en]

    Measurements of the average texture on sheet of commercial pure aluminium have been performed using neutron diffraction and electron back-scattering diffraction (EBSD). Orientation distribution function maps have been calculated and compared. The results

  • 195.
    Jovari, P., Pusztai, L.
    Uppsala University, Interfaculty Units, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    On the structure of amorphous red phosphorus2002In: Applied Physics, Vol. A74 (Suppl1), p. 1092-1094Article in journal (Refereed)
  • 196. Jovari, Pal
    et al.
    Saksl, Karel
    Pryds, Nini
    Lebech, Bente
    Bailey, Nicholas P.
    Mellergård, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    Delaplane, Robert G.
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    Franz, Hermann
    Atomic structure of glassy Mg60Cu30Y10 investigated with EXAFS, x-ray and neutron diffraction, and reverse Monte Carlo simulations2007In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 76, no 5, p. 054208-Article in journal (Refereed)
    Abstract [en]

    Short range order of amorphous Mg60Cu30Y10 was investigated by x-ray and neutron diffraction, Cu and Y K-edge x-ray absorption fine structure measurements, and the reverse Monte Carlo simulation technique. We found that Mg-Mg and Mg-Cu nearest neighbor distances are very similar to values found in crystalline Mg2Cu. The Cu-Y coordination number is 1.1 +/- 0.2, and the Cu-Y distance is similar to 4% shorter than the sum of atomic radii, suggesting that attraction between Cu and Y plays an important role in stabilizing the glassy state. Thermal stability and structure evolution upon annealing were also studied by differential scanning calorimetry and in situ x-ray powder diffraction. The alloy shows a glass transition and three crystallization events, the first and dominant one at 456 K corresponding to eutectic crystallization of at least three phases: Mg2Cu and most likely cubic MgY and CuMgY.

  • 197.
    Jóvári, P., R.G. Delaplane and L. Pusztai
    Uppsala University, Interfaculty Units, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    Structural models of amorphous selenium2003In: Phys. Rev. B., Vol. 67, p. 172201-Article in journal (Refereed)
  • 198. Kaban, I.
    et al.
    Gruner, S.
    Hoyer, W.
    Jovari, P.
    Delaplane, Robert G.
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    Wannberg, A.
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, The Studsvik Neutron Research Laboratory.
    Experimental and RMC simulation study of liquid Cu6Sn52007In: Journal of Non-Crystalline Solids, ISSN 0022-3093, E-ISSN 1873-4812, Vol. 353, no 32-40, p. 3027-3031Article in journal (Refereed)
    Abstract [en]

    The atomic structure of liquid Cu6Sn5 alloy at 640 degrees C has been investigated with neutron and X-ray diffraction. The experimental structure factors were used to perform computer modeling with the reverse Monte Carlo method. Three different series of simulations were carried out. It has been established that the partial structure factors modeled by combining the experimental data of the two independent measurements (XRD and ND) are reliable, while those modeled with only one set of the experimental data (XRD or ND) exhibit some non-physical features.

  • 199.
    Kaj, Ingemar
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Mathematics, Analysis and Probability Theory.
    Konane, Victorien
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, International Science Programme (ISP). Univ Ouagadougou, Dept Math, Ouagadougou, Burkina Faso.
    Modeling battery cells under discharge using kinetic and stochastic battery models2016In: Applied Mathematical Modelling, ISSN 0307-904X, E-ISSN 1872-8480, Vol. 40, no 17-18, p. 7901-7915Article in journal (Refereed)
    Abstract [en]

    In this paper we review several approaches to mathematical modeling of simple batterycells and develop these ideas further with emphasis on charge recovery and the responsebehavior of batteries to given external load. We focus on models which use few param-eters and basic battery data, rather than detailed reaction and material characteristicsof a specific battery cell chemistry, starting with the coupled ODE linear dynamics ofthe kinetic battery model. We show that a related system of PDE with Robin typeboundary conditions arises in the limiting regime of a spatial kinetic battery model,and provide a new probabilistic representation of the solution in terms of Brownianmotion with drift reflected at the boundaries on both sides of a finite interval. Tocompare linear and nonlinear dynamics in kinetic and stochastic battery models westudy Markov chains with states representing available and remaining capacities of thebattery. A natural scaling limit leads to a class of nonlinear ODE, which can be solvedexplicitly and compared with the capacities obtained for the linear models. To indicatethe potential use of the modeling we discuss briefly comparison of discharge profilesand effects on battery performance.

  • 200.
    Kaj, Ingemar
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Mathematics.
    Konané, Victorien
    Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, International Science Programme (ISP). University of Ougadougou, Burkina Faso.
    Analytical and stochastic modeling of battery cell dynamics2012In: Analytical and Stochastic Modeling Techniques and Applications: 19th International Conference, ASMTA 2012, Grenoble, France, June 4-6, 2012, Proceedings / [ed] K. Al-Begain, D. Fiems, and J.-M. Vincent (Eds.), Berlin Heidelberg: Springer Berlin/Heidelberg, 2012, p. 240-254Conference paper (Refereed)
    Abstract [en]

    In this work we present and discuss a modelling framework for the basic discharge process which occurs in simple electrochemical battery cells. The main purpose is to provide a setting for analyzing delivered capacity, battery life expectancy and other measures of performance. This includes a number of deterministic and stochastic variations of kinetic battery models. The primary tool is a novel phase plane analysis of the balance of nominal and theoretical capacity. In particular, we study spatial versions of such models which lead to a linear diffusion equation with Robin type boundary conditions under scaling. Explicit solutions are obtained by considering reflected Brownian motion.

1234567 151 - 200 of 391
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf