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| 10. |
- Fissum, Kevin, et al.
(author)
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High-resolution measurement of the 12C(γ,p)11B reaction to excited states for Eγ=50–70MeV
- 1998
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In: Physical Review C: covering nuclear physics. - 2469-9985. ; 58:4, s. 2167-2173
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Journal article (peer-reviewed)abstract
- Relative population of states in 11B following the 12C(γ,p) reaction has been measured with high resolution using the deexcitation γ-ray technique. The states near 7 MeV in 11B are clearly resolved and the measured population clarifies earlier conflicting data. Comparison of the results with new calculations indicates the importance of both one-nucleon and multinucleon processes.
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| 11. |
- Halldin, S, et al.
(author)
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Continuous long-term measurements of soil-plant-atmosphere variables at an agricultural site
- 1999
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In: AGRICULTURAL AND FOREST METEOROLOGY. - : ELSEVIER SCIENCE BV. - 0168-1923. ; 98-9, s. 75-102
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Journal article (peer-reviewed)abstract
- It is a major challenge in modem science to decrease the uncertainty in predictions of global climate change. One of the largest uncertainties in present-day global climate models resides with the understanding of processes in the soil-vegetation-atmosphe
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| 13. |
- Hansson, Lars, et al.
(author)
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Annie, a Tool for Integrating Ergonomics in the Design of Car Interiors
- 1999
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Conference paper (other academic/artistic)abstract
- An example of a result from a long-term cooperation with Lund University (together with professor Roland Axelsson at the Department for Work Environment) there some of the authors. (Engström) gained extensive grants (Wallenberg Stifelsen regarding equipment as well as other founding from e.g. the Swedish Work Environment Found).
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| 16. |
- Kellner, E, et al.
(author)
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Simple model of a raised bog
- 1997
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In: Annales Geophysicae, Supplement II. ; , s. C 295-
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Conference paper (other academic/artistic)
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| 21. |
- Lundin, Lars-Christer, et al.
(author)
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Continuous long-term measurements of soil-plant-atmosphere variables at a forest site
- 1999
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In: Agricultural and Forest Meteorology. - 0168-1923 .- 1873-2240. ; 98-99, s. 53-73
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Journal article (peer-reviewed)abstract
- It is a major challenge in modem science to decrease the uncertainty in predictions of global climate change. One of the largest uncertainties in present-day global climate models resides with the understanding of processes in the soil-vegetation-atmosphere-transfer (SVAT) system. Continuous, long-term data are needed in order to correctly quantify balances of water, energy and CO2 in this system and to correctly model it. It is the objective of this paper to demonstrate how a combined system of existing sensor, computer, and network technologies could be set up to provide continuous and reliable long-term SVAT-process data from a forested site under almost all environmental conditions. The Central Tower Site (CTS) system was set up in 1993-1994 in a 25 m high boreal forest growing on a highly heterogeneous till soil with a high content of stones and blocks. It has successfully monitored relevant states and fluxes in the system, such as atmospheric fluxes of momentum, heat, water vapour and CO2, atmospheric profiles of temperature, water vapour, CO2, short-and long-wave radiation, heat storage in soil and trees, sap-dow and a variety of ecophysiological properties, soil-water contents and tensions, and groundwater levels, rainfall and throughfall. System uptime has been more than 90% for most of its components during the first 5 years of operation. Results from the first 5 years of operation include e.g., budgets for energy, water and CO2, information on important but rarely occurring events such as evaporation from snow-covered canopies, and reactions of the forest to extreme drought. The carbon budget shows that the forest may be a sink of carbon although it is still growing. The completeness of the data has made it possible to test the internal consistency of SVAT models. The pioneering set-up at the CTS has been adopted by a large number of SVAT-monitoring sites around the world. Questions concerning tower maintenance, long-term calibration plans, maintenance of sensors and data-collection system, and continuous development of the computer network to keep it up to date are, however, only partly of interest as a research project in itself. It is thus difficult to get it funded from usual research-funding agencies. The full value of data generated by the CTS system can best be appreciated after a decade or more of continuous operation. Main uses of the data would be to evaluate how SVAT models handle the natural variability of climate conditions, quantification of water. carbon and energy budgets during various weather conditions, rind development of new parameterisation schemes in global and regional climate models.
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| 23. |
- Lundin, L-C, et al.
(author)
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SINOP - the NOPEX database
- 1998
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In: Second Study Conference on BALTEX, Juliusruh, Island of Rügen, Germany, 25-29 May 1998, Conference Proceedings. ; , s. 144-
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Conference paper (other academic/artistic)
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| 29. |
- Michaëlsson, Gerd, et al.
(author)
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Patients with psoriasis have elevated levels of serum eosinophil cationic protein and increased numbers of EG2 positive eosinophils in the duodenal stroma
- 1996
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In: British Journal of Dermatology. - 0007-0963 .- 1365-2133. ; 135:3, s. 371-378
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Journal article (peer-reviewed)abstract
- The occurrence of EG2-positive (EG2+) eosinophils and IgE in biopsy specimens of duodenal mucosa and skin from 39 psoriasis patients was studied, with emphasis on the relation to serum eosinophil cationic protein (ECP), serum IgE and the presence or absence of serum IgA and IgG antigliadin antibodies. Psoriasis patients had significantly elevated serum levels of ECP even after exclusion of five of 37 sera which were Phadiatop positive. The elevated serum ECP was not associated with the presence of IgA or IgG antibodies to gliadin. After exclusion of Phadiatop positive sera the serum IgE values did not differ from those of a group of healthy blood donors. Patients with psoriasis had a pronounced increase of EG2+ cells in their duodenal stroma. Patients without antibodies to gliadin tended to have even more EG2+ cells than those with such antibodies and those with increased duodenal intraepithelial lymphocytes. IgE+ cells were present in most duodenal specimens, and in some specimens there were > 100 IgE+ cells/section. The number of EG2+ cells was increased in lesional skin and, in some patients, also in non-involved skin, but there was a more pronounced increase in EG2 reactivity in the duodenal than in the skin specimens. IgE reactivity was increased both in non-involved and involved skin and was significantly related to the number of IgE-positive cells in the duodenal stroma. The results of this study indicate that the gastrointestinal tract and the eosinophil granulocyte might be involved in psoriasis in a hitherto unknown way.
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| 30. |
- Michaëlsson, Gerd, et al.
(author)
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Psoriasis patients have highly increased numbers of tryptase-positive mast cell in the duodenal stroma
- 1997
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In: British Journal of Dermatology. - 0007-0963 .- 1365-2133. ; 136:6, s. 866-870
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Journal article (peer-reviewed)abstract
- We have shown that the number of tryptase-positive mast cells in the duodenal mucosa in psoriasis is increased and that a subgroup of psoriasis patients showed elevated levels of antibodies to gliadin (some of whom also had increased lymphocytes in the duodenal epithelium). Duodenal biopsy specimens from 37 patients with psoriasis (eight mild, 13 moderate and 16 severe) and 22 patients with irritable bowel syndrome (IBS) were examined regarding the presence of tryptase + mast cells. Intraepithelial infiltration by lymphocytes was evaluated and scored from 0 to 3. Patients with psoriasis had 131 +/- 58 mast cells/mm2 (mean +/- SD) and those with IBS 28 +/- 18. Only in four of the 37 psoriasis patients was the number within the range of that in the IBS group. There were no signs of stromal inflammation except in one psoriasis patient. No relationship was found between degree of severity of psoriasis and number of mast cells. In 25 of the 37 specimens from psoriasis patients there was no increase in intraepithelial lymphocytes, whereas seven showed a slight increase (score 1-2) and five a moderate increase (score > or = 2-3). The number of tryptase + mast cells was similar in patients with or without increased intraepithelial lymphocytes. The number of mast cells showed no relation to the presence or absence of antibodies to gliadin. We hypothesize that there are at least two types of abnormalities in the duodenal mucosa in psoriasis, one type that is present in most psoriasis patients and characterized by an increase in mast cells and eosinophils, and another that is present in a subgroup of patients with antibodies to gliadin and an increased number of duodenal intraepithelial lymphocytes. The mechanisms underlying the increase in the number of mast cells and its relevance are not yet known.
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| 32. |
- Stahli, M, et al.
(author)
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Preferential water flow in a frozen soil - A two-domain model approach
- 1996
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In: Hydrological Processes. - 0885-6087 .- 1099-1085. ; 10:10, s. 1305-1316
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Journal article (peer-reviewed)abstract
- Earlier modelling studies have shown the difficulty of accurately simulating snowmelt infiltration into frozen soil using the hydraulic model approach. Comparison of model outputs and held measurements have inferred the occurrence of rapid flow even during periods when the soil is still partly frozen. A one-dimensional, physically based soil water and heat model (SOIL) has been complemented with a new two-domain approach option to simulate preferential flow through frozen layers. The ice is assumed to be first formed at the largest water filled pore upon freezing. Infiltrating water may be conducted rapidly through previously air-filled pores which are not occupied by ice; A minor fraction of water is slowly transferred within the liquid water domain, which is absorbed by the solid particles. A model validation with field measurements at a location in the middle-east of Sweden indicated that the two-domain approach was suitable for improving the prediction of drainage during snowmelting. In particular, the correlation between simulated and observed onset of drainage in spring was improved. The validation also showed that the effect of the high flow domain was highly sensitive to the degree of saturation in the topsoil during freezing, as well as to the hydraulic properties at the lower frost boundary regulating the upward water flow to the frozen soil and ice formation.
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| 33. |
- Strandberg, LE, et al.
(author)
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Anticoagulant effects of low-molecular-weight heparin following thrombolytic therapy in acute myocardial infarction: a dose-finding study
- 1996
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In: Haemostasis. - : S. Karger AG. - 0301-0147. ; 26:5, s. 247-257
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Journal article (peer-reviewed)abstract
- The aim of the present study was to gain clinical experience with different dose levels of dalteparin, a low-molecular-weight heparin, following thrombolytic therapy in acute myocardial infarction. Compared to heparin, dalteparin has a longer half-life and a greater and highly predictable bioavailability, which would suggest dalteparin to be a convenient alternative. Twenty patients with ECG signs of acute transmural myocardial ischemia received streptokinase (1.5 million IU for 60 min) and were allocated to a control group or to open treatment with 50, 75 or 100 IU of dalteparin/kg b.w. s.c. b.i.d., starting 4 h later, for 6 days. Each group consisted of 5 patients. Except for the control group, aspirin was withheld during dalteparin treatment. Anti-factor-Xa (anti-FXa) values increased dose-dependently during the first 24 h and were maintained throughout the study period. On day 6, anti-FXa levels after 100 IU/kg b.w. were 0.79 (0.59-1.00) IU/ml (median, min.-max.) 4 h after administration of dalteparin, and 0.51 (0.34-0.82) IU/ml before the subsequent dose of dalteparin. In conclusion, our results indicate that a dalteparin dose slightly higher than 100 IU/kg b.w. is required in order to obtain the presumed therapeutic range of anti-FXa (0.6-1.0 IU/ml).
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| 36. |
- Stähli, M., et al.
(author)
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Soil moisture redistribution and infiltration in frozen sandy soils
- 1999
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In: Water resources research. - 0043-1397 .- 1944-7973. ; 35:1, s. 95-103
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Journal article (peer-reviewed)abstract
- Infiltration into frozen soil is a result of the whole climate dynamics of the preceding winter with all its importance for the freezing of the soil. Therefore a predictive infiltration model needs to include a proper description of the main processes of soil water and heat transfer during season-long periods. Such a model may assume two water-conducting flow domains. A lysimeter experiment was set up with the aim of studying these processes in two different sandy soils. Frequent measurements of total and liquid soil water content, soil temperature, and groundwater level were made during two winters with contrasting meteorological conditions. The main problems in the simulation of the two winters were (1) frost-induced upward water redistribution, (2) rate of infiltration in the initially air-filled pores, and (3) heat transfer caused by snowmelt refreezing in the frozen soil. An extensive calibration of the model suggested that some key empirical parameters were not constant for the two soils and the two seasons. Complementary methods for determining the hydraulic conductivity of frozen unsaturated field soils are necessary to further improve the model.
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| 39. |
- Sundqvist, B., et al.
(author)
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Orientational disorder and the p-T phase diagrams of fullerenes
- 1995
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In: Proceedings of the Symposium on Recent Advances in the Chemistry and Physics of Fullerenes and Related Materials. - Pennington, NJ : Electrochemical Society, Incorporated. - 1566771048 ; , s. 891-905
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Conference paper (peer-reviewed)
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