1. |
- Ringbom, A, et al.
(author)
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The B-10,B-11(n, p)Be-10,Be-11 reactions at E-n=96 MeV
- 2001
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In: NUCLEAR PHYSICS A. - : ELSEVIER SCIENCE BV. - 0375-9474. ; 679:3-4, s. 231-250
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Journal article (peer-reviewed)abstract
- Double-differential cross sections of the B-10,B-11(n,p)Be-10,Be-11 reactions have been measured at 96 MeV in the angular range 0 degrees -30 degrees for excitation energies up to 35 MeV. The spectra have been decomposed into different multipolarities usi
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2. |
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3. |
- Öhrn, Angelica, et al.
(author)
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Elastic scattering of 96 MeV neutrons from iron, yttrium, and lead
- 2008
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In: Physical Review C. Nuclear Physics. - 0556-2813 .- 1089-490X. ; 77:2, s. 024605-
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Journal article (peer-reviewed)abstract
- Data on elastic scattering of 96 MeV neutrons from Fe-56, Y-89, and Pb-208 in the angular interval 10-70 degrees are reported. The previously published data on Pb-208 have been extended, as a new method has been developed to obtain more information from data, namely to increase the number of angular bins at the most forward angles. A study of the deviation of the zero-degree cross section from Wick's limit has been performed. It was shown that the data on Pb-208 are in agreement with Wick's limit while those on the lighter nuclei overshoot the limit significantly. The results are compared with modern optical model predictions, based on phenomenology and microscopic nuclear theory. The data on Fe-56, Y-89, and Pb-208 are in general in good agreement with the model predictions.
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4. |
- Andersson, J., et al.
(author)
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Echogenecity of the carotid intima-media complex is related to cardiovascular risk factors, dyslipidemia, oxidative stress and inflammation The Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) study
- 2009
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In: Atherosclerosis. - : Elsevier BV. - 1879-1484 .- 0021-9150. ; 204:2, s. 612-618
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Journal article (peer-reviewed)abstract
- Background: Increased carotid artery intima-media thickness (IMT), measured by ultrasound, is related to an increased risk of cardiovascular disease. Since presence of echolucent plaques increases the risk further, we investigated if echogenecity of the carotid intima-media complex is related to markers of cardiovascular risk. Our aim was therefore to investigate if intima-media echogenecity is related to cardiovascular risk factors, or to markers of inflammation and oxidation in an exploratory investigation. Methods: The PIVUS cohort study is an observational study of 1016 (509 women and 507 men) randomly chosen individuals aged 70 living in Uppsala, Sweden. Carotid artery ultrasound measurements were performed. IMT and the grey scale median (GSM) value were calculated in the intima-media complex (IM-GSM) in the far wall of the common carotid artery. Traditional risk factors were evaluated together with indices of oxidative stress and inflammation. Results: In the multiple regression analysis, HDL-cholesterol, body mass index, conjugated diens, glutathione, e-selectin and TNF alfa were significantly related to IM-GSM. IMT was independently related to blood pressure, smoking and body mass index. Conclusion: The echolucency of the carotid intima-media was related to several cardiovascular risk factors not related to IMT, such as dyslipidemia, oxidative stress and inflammation. Since the echogenecity of the carotid intima-media complex was related to different risk factors compared to carotid IMT, it is worthwhile to further explore the usefulness of this new marker of the vascular wall. (C) 2009 Published by Elsevier Ireland Ltd.
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5. |
- Andersson, J., et al.
(author)
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The Carotid Artery Plaque Size and Echogenicity are Related to Different Cardiovascular Risk Factors in the Elderly
- 2009
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In: Lipids. - : Wiley. - 0024-4201 .- 1558-9307. ; 44:5, s. 397-403
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Journal article (peer-reviewed)abstract
- Carotid plaques can be characterised by ultrasound by size and echogenicity. Both size and echogenicity are predictors of cardiovascular events. The aim of this study was to examine whether traditional risk factors and markers of inflammation and oxidation were associated with plaque size and echogenicity. Computerised analysis of carotid plaque size and echogenicity (grey scale median, GSM) were performed by ultrasound in a population-based health survey in 1,016 subjects aged 70 years (PIVUS study). Information on cardiovascular risk factors was collected, together with markers of inflammation and oxidation. Increased Framingham risk score, systolic blood pressure, higher BMI and decreased HDL, lower glutathione levels were related to echolucent plaques. Previous or present smoking was common with significantly more pack-years related to the echorich plaques. Plaque size was associated with increased Framingham risk score, systolic blood pressure, blood glucose levels, smoking, ApoB/A1 ratio, OxLDL, TNF alpha, HOMA insulin resistance, leucocyte count, decreased BCD-LDL and low levels of l-selectin. Low HDL, increased BMI and decreased glutathione levels were associated with the echolucency of carotid plaques, implying metabolic factors to play a role for plaque composition. Markers of inflammation were related to plaque size alone, implying inflammation to be predominantly associated with the amount of atherosclerosis. These results suggest that plaque size and echogenicity are influenced by different risk factors.
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6. |
- Batenkov, O, et al.
(author)
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High-precision spectrometer for studies of ion-induced and spontaneous fission dynamics
- 1997
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In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT. - : ELSEVIER SCIENCE BV. - 0168-9002. ; 394:1-2, s. 235-242
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Journal article (peer-reviewed)abstract
- A spectrometer has been designed and built to investigate the dynamics of spontaneous and ion-induced fission processes. It consists of 8 neutron detectors surrounding a low mass scattering chamber containing the fussionable targets and two fission fragme
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7. |
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8. |
- Blideanu, V., et al.
(author)
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Nucleon-induced reactions at intermediate energies : New data at 96 MeV and theoretical status
- 2004
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In: Physical Review C. Nuclear Physics. - 0556-2813 .- 1089-490X. ; 70:1, s. 014607-
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Journal article (peer-reviewed)abstract
- Double-differential cross sections for light charged particle production (up to A=4) were measured in 96 MeV neutron-induced reactions, at the TSL Laboratory Cyclotron in Uppsala (Sweden). Measurements for three targets, Fe, Pb, and U, were performed using two independent devices, SCANDAL and MEDLEY. The data were recorded with low-energy thresholds and for a wide angular range (20°–160°). The normalization procedure used to extract the cross sections is based on the np elastic scattering reaction that we measured and for which we present experimental results. A good control of the systematic uncertainties affecting the results is achieved. Calculations using the exciton model are reported. Two different theoretical approaches proposed to improve its predictive power regarding the complex particle emission are tested. The capabilities of each approach is illustrated by comparison with the 96 MeV data that we measured, and with other experimental results available in the literature.
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9. |
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10. |
- Bläckberg, Lisa, et al.
(author)
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Investigations of surface coatings to reduce memory effect in plastic scintillator detectors used for radioxenon detection
- 2011
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In: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier BV. - 0168-9002 .- 1872-9576. ; 656:1, s. 84-91
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Journal article (peer-reviewed)abstract
- In this work Al(2)O(3) and SiO(2) coatings are tested as Xe diffusion barriers on plastic scintillator substrates. The motivation is improved beta-gamma coincidence detection systems, used to measure atmospheric radioxenon within the verification regime of the Comprehensive Nuclear-Test-Ban Treaty. One major drawback with the current setup of these systems is that the radioxenon tends to diffuse into the plastic scintillator material responsible for the beta detection, resulting in an unwanted memory effect. Here, coatings with thicknesses between 20 and 900 nm have been deposited onto plastic scintillators, and investigated using two different experimental techniques. The results show that all tested coatings reduce the Xe diffusion into the plastic. The reduction is observed to increase with coating thickness for both coating materials. The 425 nm Al(2)O(3) coating is the most successful one, presenting a diffusion reduction of a factor 100, compared to uncoated plastic. In terms of memory effect reduction this coating is thus a viable solution to the problem in question.
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11. |
- Dangtip, S, et al.
(author)
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A facility for measurements of nuclear cross sections for fast neutron cancer therapy
- 2000
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In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT. - : ELSEVIER SCIENCE BV. - 0168-9002. ; 452:3, s. 484-504
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Journal article (peer-reviewed)abstract
- A facility for measurements of neutron-induced double-differential light-ion production cross-sections, for application within. e.g.. fast neutron cancer therapy, is described. The central detection elements are three-detector telescopes consisting of two
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12. |
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13. |
- Dangtip, S, et al.
(author)
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The 9-Be(n,p)9-Li reaction at En = 97 MeV
- 1997
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In: Proceedings of the International Conference on Nuclear Data for Science and Technology, Trieste, 1997. ; , s. 345-
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Conference paper (other academic/artistic)
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14. |
- Dangtip, S, et al.
(author)
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The Be-9(n,p)Li-9 reaction and the Gamow-Teller unit cross section
- 2000
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In: NUCLEAR PHYSICS A. - : ELSEVIER SCIENCE BV. - 0375-9474. ; 677, s. 3-24
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Journal article (peer-reviewed)abstract
- Double differential cross sections of the Be-9(n,p)Li-9 reaction have been measured at 96 MeV in the angular range 0 degrees-27 degrees up to about 20 MeV excitation energy. In addition, the C-12(n,p)B-12 reaction has been measured in the same angular and
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15. |
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16. |
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17. |
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18. |
- ERICSON, TEO, et al.
(author)
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PI-NN COUPLING FROM HIGH-PRECISION NP CHARGE-EXCHANGE AT 162 MEV
- 1995
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In: PHYSICAL REVIEW LETTERS. - : AMER INST PHYSICS. - 0031-9007. ; 75:6, s. 1046-1049
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Journal article (other academic/artistic)abstract
- Differential np cross sections for unpolarized neutrons of 162 MeV have been measured to high precision with particular attention to the absolute normalization. These data can be extrapolated precisely and model independently to the pion pole and give a p
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19. |
- Granéli, Edna, et al.
(author)
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Nutrient limitation of primary production in the Baltic Sea area
- 1990
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In: Ambio. - 0044-7447 .- 1654-7209. ; 19:3, s. 142-151
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Journal article (peer-reviewed)abstract
- In the Baltic Sea area, including the Kattegat, the external N/P loadingratios are generally well above the 16:1 Redfield ratio for all subareas (theBothnian Bay, the Bothnian Sea, the Baltic proper and the Kattegat).During winter, the inorganic N/P ratio in surface waters varies. Appreciablyhigher values than the loading ratio are found for the northernmostbasin, the low-saline Bothnian Bay, while lower values than the loadingratio are found for the Baltic proper and the Kattegat. Nutrient enrichmenttests indicate general N limitation in the Baltic proper and the Kattegat,although stimulation of algal growth after P enrichment has been found inthe Baltic proper during summer blooms of blue-green algae. Blooms ofblue-green algae are common in the Baltic proper but hardly ever occur inthe Bothnian Bay and the Kattegat. This has been the case for the lastcentury, indicating natural summer N limitation. Full-scale experimentalmanipulation of the external N/P loading ratio has been carried out in theHimmerfjard basin, south of Stockholm. Results suggest nitrogen as themost limiting nutrient in coastal areas of the Baltic proper, uninfluencedby direct nutrient discharges. The knowledge of the effects of alteredexternal nutrient supplies for nutrient limitation in the Baltic Sea systemas a whole is too limited to allow for reliable predictions. However, theBaltic Sea may have developed towards a more pronounced N limitationdue to a twofold historic increase in P supply relative to N supply. Atpresent, the situation may be reversed as N supply is probably increasingmore rapidly than P supply. Management of the Baltic Sea area cannot bebased on removal of either N or P in sewage, but must take both elementsinto consideration, as well as differences between sub-basins andbetween polluted coastal and offshore areas.
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20. |
- Hildebrand, Angelica, et al.
(author)
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Elastic Neutron Scattering at 96 MeV
- 2004
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In: Proc. Int. Conf. on Nuclear Data for Science and Technology.
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Conference paper (other academic/artistic)
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28. |
- Muth, Andreas, 1974, et al.
(author)
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Genetic testing and surveillance guidelines in hereditary pheochromocytoma and paraganglioma
- 2019
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In: Journal of Internal Medicine. - : Wiley. - 0954-6820 .- 1365-2796. ; 285:2, s. 187-204
-
Journal article (peer-reviewed)abstract
- Pheochromocytoma and paraganglioma (PPGL) are rare tumours and at least 30% are part of hereditary syndromes. Approximately 20% of hereditary PPGL are caused by pathogenic germ line variants in genes of the succinate dehydrogenase complex (SDHx), TMEM127 or MAX. Herein we present guidelines regarding genetic testing of family members and their surveillance based on a thorough literature review. All cases of PPGL are recommended genetic testing for germ line variants regardless of patient and family characteristics. At minimum, FH, NF1, RET, SDHB, SDHD and VHL should be tested. In addition, testing of MEN1, SDHA, SDHAF2, SDHC, TMEM127 and MAX is recommended. Healthy first-degree relatives (and second-degree relatives in the case of SDHD and SDHAF2 which are maternally imprinted) should be offered carrier testing. Carriers of pathogenic variants should be offered surveillance with annual biochemical measurements of methoxy-catecholamines and bi-annual rapid whole-body magnetic resonance imaging and clinical examination. Surveillance should start 5 years before the earliest age of onset in the family and thus only children eligible for surveillance should be offered pre-symptomatic genetic testing. The surveillance of children younger than 15 years needs to be individually designed. Our guidelines will provide a framework for patient management with the possibility to follow outcome via national registries and/or follow-up studies. Together with improved insights into the disease, this may enable optimisation of the surveillance scheme in order to minimise both anxiety and medical complications while ensuring early disease detection.
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29. |
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30. |
- Olsson, N, et al.
(author)
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Neutron-proton scattering at 96 and 162 MeV
- 1997
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In: Proceedings of the International Conference on Nuclear Data for Science and Technology, Trieste, 1997. ; , s. 1230-
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Conference paper (peer-reviewed)
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31. |
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32. |
- Olsson, N, et al.
(author)
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Uppsala neutron-proton scattering measurements and the pi NN coupling constant
- 2000
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In: PHYSICA SCRIPTA. - : ROYAL SWEDISH ACAD SCIENCES. - 0281-1847. ; T87, s. 7-13
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Journal article (peer-reviewed)abstract
- The differential np scattering cross section has been measured at 96 MeV and 162 MeV at backward angles at the neutron beam facility of the The Svedberg Laboratory in Uppsala. The angular distributions have been normalized to the experimental total np cro
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33. |
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34. |
- Rahm, J, et al.
(author)
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np scattering measurements at 162 MeV and the pi NN coupling constant
- 1998
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In: PHYSICAL REVIEW C-NUCLEAR PHYSICS. - : AMERICAN PHYSICAL SOC. - 0556-2813. ; 57:3, s. 1077-1096
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Journal article (other academic/artistic)abstract
- The differential np scattering cross section has been measured at 162 MeV in the angular range theta(c.m.) = 72 degrees-180 degrees, using the neutron beam facility at The Svedberg Laboratory in Uppsala. Special attention was paid to the absolute normaliz
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35. |
- Rahm, J, et al.
(author)
-
np scattering measurements at 96 MeV - art. no. 044001
- 2001
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In: PHYSICAL REVIEW C. - : AMERICAN PHYSICAL SOC. - 0556-2813. ; 6304:4, s. 4001-
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Journal article (peer-reviewed)abstract
- The differential np scattering cross section has been measured at 96 MeV in the angular range theta (c.m.) =74-180 degrees at the neutron beam facility of the The Svedberg Laboratory in Uppsala. A subset of the data, covering 116-180 degrees, has previous
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41. |
- Somsak, Dangtip, et al.
(author)
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Facility for measurements of nuclear cross sections for fast neutron cancer therapy
- 2000
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In: Nuclear Instruments and Methods in Physics Research Section A. - 0168-9002 .- 1872-9576. ; 452:3, s. 484-504
-
Journal article (peer-reviewed)abstract
- A facility for measurements of neutron-induced double-differential light-ion production cross-sections, for application within, e.g., fast neutron cancer therapy, is described. The central detection elements are three-detector telescopes consisting of two silicon detectors and a CsI crystal. Use of ?E-?E-E techniques allows good particle identification for p, d, t, 3He and alpha particles over an energy range from a few MeV up to 100 MeV. Active plastic scintillator collimators are used to define the telescope solid angle. Measurements can be performed using up to eight telescopes at 20░ intervals simultaneously, thus covering a wide angular range. The performance of the equipment is illustrated using experimental data taken with a carbon target at En = 95 MeV. Distortions of the measured charged-particle spectra due to energy and particle losses in the target are corrected using a newly developed computer code. Results from such correction calculations are presented.
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46. |
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47. |
- Tippawan, U., et al.
(author)
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Light-ion production in the interaction of 96 MeV neutrons with silicon
- 2004
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In: Physical Review C. Nuclear Physics. - 0556-2813 .- 1089-490X. ; 69:6
-
Journal article (peer-reviewed)abstract
- Double-differential cross sections for light-ion (p, d, t, He-3, and alpha) production in silicon, induced by 96 MeV neutrons, are reported. Energy spectra are measured at eight laboratory angles from 20degrees to 160degrees in steps of 20degrees. Procedures for data taking and data reduction are presented. Deduced energy-differential, angle-differential, and production cross sections are reported. Experimental cross sections are compared to theoretical reaction model calculations and experimental data in the literature.
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48. |
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50. |
- Tutin, GA, et al.
(author)
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An ionization chamber with Frisch grids for studies of high-energy neutron-induced fission
- 2001
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In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT. - : ELSEVIER SCIENCE BV. - 0168-9002. ; 457:3, s. 646-652
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Journal article (peer-reviewed)abstract
- A gridded ionization chamber for fission fragment detection is described. The chamber has been specially designed for use at the quasi-monoenergetic Li-7(p, n) neutron source at the The Svedberg Laboratory, Uppsala, Sweden. The detector permits measuremen
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