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- Adeva, B, et al.
(författare)
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Next-to-leading order QCD analysis of the spin structure function g(1) - art. no. 112002
- 1998
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Ingår i: PHYSICAL REVIEW D. - : AMERICAN PHYSICAL SOC. - 0556-2821. ; 5811:11, s. 2002-
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- We present a next-to-leading order QCD analysis of the presently available data on the spin structure function g(1) including the final data from the Spin Muon Collaboration. We present results for the first moments of the proton, deuteron, and neutron st
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- Adeva, B, et al.
(författare)
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Measurement of proton and nitrogen polarization in ammonia and a test of equal spin temperature
- 1998
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Ingår i: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT. - : ELSEVIER SCIENCE BV. - 0168-9002. ; 419:1, s. 60-82
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The 1996 data taking of the SMC experiment used polarized protons to measure the spin-dependent structure function g(1) of the proton. Three liters of solid granular ammonia were irradiated at the Bonn electron linac in order to create the paramagnetic ra
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- Berglund, P., et al.
(författare)
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Altering the specificity of subtilisin B. lentus by combining site-directed mutagenesis and chemical modification
- 1996
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Ingår i: Bioorganic & Medicinal Chemistry Letters. - 0960-894X .- 1464-3405. ; 6:21, s. 2507-2512
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Tidskriftsartikel (refereegranskat)abstract
- The thiol side chain of the M222C mutant of the subtilisin from Bacillus lentus (SBL) has been chemically modified by methyl-, aminoethyl-, and sulfonatoethylthiosulfonate reagents. Introduction of charged residues into the active site of the enzyme reduced the catalytic efficiency with Suc-AAPF-pNA as the substrate, but resulted in better binding of sterically demanding boronic acid inhibitors.
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- Berglund, T, et al.
(författare)
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Reemergence of gonorrhea in Sweden
- 1999
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Ingår i: Sexually transmitted diseases. - : Ovid Technologies (Wolters Kluwer Health). - 0148-5717. ; 26:7, s. 390-391
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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- Naessen, T, et al.
(författare)
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Bone loss in elderly women prevented by ultralow doses of parenteral 17beta-estradiol.
- 1997
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Ingår i: American Journal of Obstetrics and Gynecology. - : Elsevier BV. - 0002-9378 .- 1097-6868. ; 177:1, s. 115-9
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVES: Our purpose was to assess whether an ultralow dose of parental estradiol, aimed for treatment of vaginal atrophy, affects bone metabolism and bone density.STUDY DESIGN: Thirty healthy women > or = 60 years old were randomly assigned to a 6-month treatment with either an ultralow dose of parenteral estradiol (7.5 microg/24 hours) delivered by vaginal rings or no treatment in the proportion 2:1.RESULTS: Forearm bone density increased in estradiol users by 2.1% (95% confidence interval 0.4 to 3.8, p = 0.008), contrasting to a decrease in nonusers of -2.7% (95% confidence interval -5.9 to 0.4, p = 0.077). In analysis of variance the changes in the two study groups differed significantly (p = 0.0004). Consistently, serum alkaline phosphatases, bone-specific alkaline phosphatases, and osteocalcin concentrations decreased in the treatment group (8%, p = 0.019; 14%, p = 0.0006; and 9%, p = 0.02, respectively), suggesting reduced bone turnover. No significant changes were found in nonusers.CONCLUSION: Ultralow doses of estradiol may potentially prevent bone loss in women > or = 60 years old.
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- Sun, L C, et al.
(författare)
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Binuclear ruthenium-manganese complexes as simple artificial models for photosystem II in green plants
- 1997
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Ingår i: Journal of the American Chemical Society. - : American Chemical Society (ACS). - 1520-5126 .- 0002-7863. ; 119:30, s. 6996-7004
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Tidskriftsartikel (refereegranskat)abstract
- As part of a project aimed at developing models for photosystem II (PSII) in green plants, we have prepared a series of model compounds (7, 8, and 13). In these compounds, a photosensitizer, ruthenium(II) tris(bipyridyl) complex (to mimic the function of P-680 in PSII), was covalently linked to a manganese(II) ion through different bridging ligands. The structures of the compounds were characterized by electron paramagnetic resonance measurements and electrospray ionization mass spectrometry. The interaction between the ruthenium and manganese moieties within the complex was probed by steady-state and time-resolved emission measurements. When the binuclear complexes are exposed to flash photolysis in the presence of an electron acceptor such as methylviologen (MV2+), it could be shown that after the initial electron transfer from the excited state of Ru(II) in compound 7, forming Ru(III) and MV+., an intramolecular electron transfer from coordinated Mn(II) to the photogenerated Ru(III) occurred with a first-order rate constant of 1.8 x 10(5) s(-1), regenerating Ru(II). This is believed to be the first supramolecular system where a manganese complex has been used as an electron donor to a photo-oxidized photosensitizer, Possible extensions to develop the manganese donor, and thus to approach the function of reaction center in PSII, are indicated.
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- Thulin, T, et al.
(författare)
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Long-term effects of diltiazem and atenolol on blood glucose, serum lipids, and serum urate in hypertensive patients. Swedish-Finnish Study Group
- 1999
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Ingår i: International Journal of Clinical Pharmacology and Therapeutics. - 0946-1965. ; 37:1, s. 28-33
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of this long-term treatment study was to evaluate health-related quality of life by comparing the effects of diltiazem and atenolol on some important metabolic parameters. SUBJECTS, MATERIAL AND METHODS: In a Swedish-Finnish long-term multicenter study 256 patients with mild to moderate hypertension were randomized to treatment with diltiazem retard (D) (n = 127) or atenolol (A) (n = 129). Doses could be increased and additional captopril medication be given to achieve adequate blood pressure (BP) reduction. The treatment in group D lasted for two years while group A was treated for 1 year and then was given D for another 2 years. RESULTS: After 1 year BP was significantly reduced in both groups and to a similar degree. The BP reduction was maintained during the rest of the study. After 1 and 2 years, HDL had increased significantly (p < 0.001) in group D. There was a corresponding significant reduction of the LDL/HDL ratio. In group A there were no changes after 1 year regarding lipoprotein levels. After the switch to D, group A showed similar improvements regarding HDL and the LDL/HDL ratio as the original D group. CONCLUSION: It is concluded that D and A are equally effective in lowering BP. However, long-term treatment with D, but not with A, has a favorable effect on HDL concentrations and the LDL/HDL ratio. According to these findings D affects the risk factor profile in hypertension.
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