| 1. |
- Gorska, M, et al.
(författare)
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Cd-98(48)50 : The two-proton-hole spectrum in Sn-100(50)50
- 1997
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Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 79:13, s. 2415-2418
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Tidskriftsartikel (refereegranskat)abstract
- Excited states in Cd-98, two proton holes from Sn-100, were identified and studied for the first time, using in-beam spectroscopy with highly selective ancillary detectors. The structure of the (pi g(9/2))(-2) two-proton-hole spectrum below a T-1/2 = 0.48(16) mu s isomer is deduced and compared to shell-model predictions. A tentative I-pi = (8(+)) assignment, as suggested by systematics, yields a strongly reduced B(E2,8(+) --> 6(+)) = 0.44((+20)(-10)) W.u., corresponding to an effective proton charge of e(pi) = 0.85((+20)(-10))e, which is at variance with existing theoretical predictions.
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| 2. |
- Gorska, M, et al.
(författare)
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Cd-98(48)50: The two-proton-hole spectrum in Sn-100(50)50
- 1997
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Ingår i: PHYSICAL REVIEW LETTERS. - : AMER INST PHYSICS. - 0031-9007. ; 79:13, s. 2415-2418
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Excited states in Cd-98, two proton holes from Sn-100, were identified and studied for the first time, using in-beam spectroscopy with highly selective ancillary detectors. The structure of the (pi g(9/2))(-2) two-proton-hole spectrum below a T-1/2 = 0.48
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| 3. |
- Gorska, M, et al.
(författare)
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Spectroscopy of the T-z=1 nuclei close to Sn-100
- 1997
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Ingår i: Acta Physica Polonica B. - 0587-4254 .- 1509-5770. ; 28:1-2, s. 303-307
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Tidskriftsartikel (refereegranskat)abstract
- The two nuclei Cd-98 and Sn-102, closest neighbours of Sn-100, have been studied with a recoil catcher setup, following the reactions: Ni-58(Ti-46, alpha 2n)Cd-98 and Ni-58(Cr-50, alpha 2n)Sn-102. Long lived isomeric states were measured in Cd-98 I-pi = (8+), t(1/2) = 0.48(8) mu s and in Sn-102 I-pi = (6(+)) with t(1/2) = 1.0(6) mu s. The proposed experimental level schemes of the isomeric decay are presented and compared to the shell model predictions.
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| 4. |
- Gorska, M, et al.
(författare)
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Spectroscopy of the T-z=1 nuclei close to Sn-100
- 1997
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Ingår i: ACTA PHYSICA POLONICA B. - : ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS. - 0587-4254. ; 28:1-2, s. 303-307
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The two nuclei Cd-98 and Sn-102, closest neighbours of Sn-100, have been studied with a recoil catcher setup, following the reactions: Ni-58(Ti-46, alpha 2n)Cd-98 and Ni-58(Cr-50, alpha 2n)Sn-102. Long lived isomeric states were measured in Cd-98 I-pi = (
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| 5. |
- Lipoglavšek, M., et al.
(författare)
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In-beam study of 102Sn
- 1996
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Ingår i: Zeitschrift für Physik A Hadrons and Nuclei. - 0939-7922 .- 1431-5831. ; 356:3, s. 239-240
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Tidskriftsartikel (refereegranskat)abstract
- Excited states in 102Sn have been identified for the first time, in an in-beam γ-ray spectroscopic experiment. Two γ-ray transitions with energies 1472 and 497 keV following the decay of the seniority 6+ isomer with t1/2 = 1.0(5) μs were unambiguously assigned to 102Sn. Due to the very low cross section of about 2 μb for producing 102Sn in the reaction 50Cr(58Ni,1α2n), a highly selective detector setup utilizing NORDBALL ancillary detectors and a recoil catcher device was used. High γ-ray detection efficiency was achieved with two EUROBALL Ge cluster detectors.
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| 6. |
- Lipoglavsek, M, et al.
(författare)
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In-beam study of Sn-102
- 1996
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Ingår i: ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI. - : SPRINGER VERLAG. - 0939-7922. ; 356:3, s. 239-240
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Excited states in Sn-102 have been identified for the first time, in an in-beam gamma-ray spectroscopic experiment. Two gamma-ray transitions with energies 1472 and 497 keV following the decay of the seniority 6(+) isomer with t(1/2) = 1.0(5) mu s were un
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| 7. |
- Roth, Bengt, et al.
(författare)
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Biochemical and ultra-structural reactions to parenteral nutrition with two different fat emulsions in rats
- 1998
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Ingår i: Intensive Care Medicine. - : Springer Science and Business Media LLC. - 0342-4642 .- 1432-1238. ; 24:7, s. 716-724
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To compare the effects on fat metabolism and Kupffer cell morphology by total parenteral nutrition (TPN) with two different fat emulsions. DESIGN: Thirty-two male Sprague-Dawley rats, divided into three groups, were investigated. Rats fed orally were used as a reference group, and a group of rats receiving TPN with fat emulsions containing pure long-chain triglycerides (LCT) was compared to a group of rats receiving fat emulsions containing both long-chain triglycerides and medium-chain triglycerides (MCT/LCT). The TPN regimens were equicaloric and administered continuously via a jugular catheter for 10 days. INTERVENTIONS: After suffocation, blood of the rats was collected for the determination of serum lipids. Epididymal fat and heart were collected for the analysis of lipoprotein lipase (LPL) activities, and liver specimens were saved for analyses of hepatic triglyceride concentration, as well as activities of hepatic lipase (HL) and lysosomal enzymes. Light and electron microscopy were used for examination of the Kupffer cell reaction. RESULTS: Directly after termination of parenteral feeding, the levels of serum triglycerides and high density lipoprotein (HDL) triglycerides were higher in the MCT/LCT group than in the LCT group, while no differences concerning cholesterol and phospholipid concentrations were found. No significant difference in liver steatosis was found between the two TPN groups. Comparison of the TPN groups showed that the MCT/ LCT group had significantly decreased LPL activity in adipose tissue, while the LCT group had significantly increased LPL activity in the heart. The activity of HL was low in both groups, but significantly lower in the LCT group. Lipid accumulation and an increased number of lysosomes were found in all Kupffer cell when TPN with LCTemulsions was used. Moreover, TPN induced a pronounced increase in various liver lysosomal enzyme activities, but there was no notable difference between LCT and MCT/LCT effects. CONCLUSIONS: Compared to treatment with pure LCTemulsions, treatment with MCT/LCT emulsions evoked weaker biochemical reactions in terms of lower activity of lipoprotein lipase in fat and heart together with higher serum and HDL triglyceride levels. Morphological signs of increased Kupffer cell activity such as the appearance of multiple lysosomes and fat vacuoles in the cytoplasm followed treatment with pure LCT emulsions. However, both TPN groups showed a marked increase in activities of liver lysosomal enzymes.
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| 8. |
- Roth, Bengt, et al.
(författare)
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Effects of heparin and low molecular weight heparin on lipid transport during parenteral feeding in the rat
- 1996
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Ingår i: Acta Anaesthesiologica Scandinavica. - 0001-5172. ; 40:1, s. 102-111
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Treatment with heparin has been reported to interfere with lipid metabolism by release of Lipoprotein Lipase (LPL) into the circulation. The purpose of the present study was to determine the effects on LPL activity by anticoagulants in combination with total parenteral nutrition (TPN) in the rat. In an earlier investigation we could show that TPN, per se, caused a three-fold increase of triglyceride content in liver tissue, retention of lipids in the circulation and disturbed cholesterol metabolism with accumulation of cholesterol in the non High Density Lipoprotein (HDL) fraction of lipoproteins. The activity of Hepatic Lipase (HL) was decreased, while the activities of LPL in adipose tissue and heart were up-regulated. METHODS: Effects on lipid metabolism by TPN for seven days with or without simultaneous administration of heparin or Low Molecular Weight Heparin (LMWH) were studied in 52 healthy male Sprague-Dawley rats. Combinations of Heparin or LMWH and discontinuous or continuous administration of TPN solutions (including approximately 8 g triglycerides/kg body weight daily) were investigated. RESULTS: Addition of LMWH, but not heparin, to treatment with TPN resulted in significant up-regulation of LPL activity in the heart. Combination of heparin and continuous administration of TPN solutions was followed by modest, but significant, increases of S-Triglycerides and HDL-Triglycerides. No differences between the TPN groups were observed concerning liver steatosis, cholesterol metabolism, phospholipid metabolism or HL activity. CONCLUSION: Treatment with LMWH during TPN resulted in up-regulated LPL activity in the heart, which might represent a compensatory mechanism for enzyme release from the capillary walls induced by anticoagulants. Administration of heparin, a more effective lipase-releasing agent, was not associated with increased LPL activity. Heparin treatment in combination with continuous TPN administration was followed by increased levels of triglycerides in blood and HDL particles, suggesting that treatment with heparin might have impaired the capacity for LPL up-regulation, resulting in the development of hyperlipidemia. Further investigations are necessary for evaluation of the mechanisms. Depletion of LPL activity could not be demonstrated by this study in healthy rats.
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| 9. |
- Roth, Bengt, et al.
(författare)
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Lipid deposition in Kupffer cells after parenteral fat nutrition in rats: a biochemical and ultrastructural study
- 1996
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Ingår i: Intensive Care Medicine. - 0342-4642. ; 22:11, s. 1224-1231
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To study fat metabolism and evaluate lipid deposition in hepatocytes and Kupffer cells during parenteral nutrition (PN) with or without fat. DESIGN: 20 male Sprague-Dawley rats, divided into four groups, were investigated. Rats fed orally were used as a reference group and compared to three groups of rats receiving PN either without fat or with 33% of non-protein energy as fat or with 66% of non-protein energy as fat. The PN regimens were equicaloric and administered continuously via a jugular catheter for 7 days. INTERVENTIONS: After suffocation, blood was collected for determination of serum lipids. Epididymal fat and heart were collected for analysis of lipoprotein lipase activities, and pieces of liver were saved for analyses of liver triglyceride concentration and hepatic lipase activity. Light and electron microscopy were used for examination of lipid deposition in Kupffer cells. RESULTS: Directly after termination of parenteral feeding, the serum levels of triglycerides were similar in all PN groups, while the levels of non-high-density lipoprotein (HDL) cholesterol and non-HDL phospholipids were significantly increased in parallel with increased doses of fat. Lipid-free PN resulted in significantly less liver steatosis than high-fat PN. Lipid PN also resulted in downregulated hepatic lipase activity, signs of lipid accumulation in Kupffer cells and hepatocytes and an increased number of phagosomes in Kupffer cells. CONCLUSIONS: Fat vacuoles were found in Kupffer cells after lipid PN, although serum levels of triglycerides were not elevated and lipoprotein lipase activity were not depressed. The cells were distended by fat vacuoles after administration of PN solutions with a high fat concentration. Morphological signs of increased Kupffer cell activity were also found, suggesting that intravenous fat emulsions may activate macrophages.
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| 10. |
- Sohler, D., et al.
(författare)
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Yrast states of the proton drip line nucleus 106 Sb
- 1999
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Ingår i: Physical Review C - Nuclear Physics. - 2469-9985 .- 2469-9993 .- 0556-2813 .- 1089-490X. ; 59:3, s. 1324-1327
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Tidskriftsartikel (refereegranskat)abstract
- Yrast states of [Formula Presented] have been investigated in the [Formula Presented] reaction using in-beam [Formula Presented]-spectroscopic methods and in the [Formula Presented] reaction performing delayed [Formula Presented] and conversion electron studies. A new isomeric state was found at 103 keV with [Formula Presented] The number of states and transitions in the proposed level scheme have been doubled. The experimental results are discussed within the framework of the shell model. © 1999 The American Physical Society.
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