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11.
F. Albert Cotton Akhil R. Chakravarty Derek A. Tocher T. Anthony Stephenson 《Inorganica chimica acta》1984,87(2):115-119
The compounds Os2(O2CCH3)4Cl2,1 and Os(O2CC2H5)4Cl2, 2, have been structurally characterized. Both compounds crystallize in space group P21/n. For 1 the unit cell parameters are a = 6.546(1) Å, b = 8.950(1) Å, c = 12.533(1) Å, β = 90.17(1)° and Z = 2; for 2 they are a = 6.792(2) Å, b = 10.519(3) Å, c = 13.372(4) Å, β = 89.27(3)° and Z = 2. Both molecules have approximate D4th symmetry with important dimensions as follows: for 1, Os≡Os 2.314(1) Å, OsCl 2.448(2) Å; for 2, Os≡Os 2.316(2) Å, OsCl 2.430(5) Å. The mass spectra of these compounds as well as that of Os2(O2CC3H7)4Cl2,3, are reported and discussed. 相似文献
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Elke EM Brouwers Alwin DR Huitema Jos H Beijnen Jan HM Schellens 《BMC clinical pharmacology》2008,8(1):7
Background
The aim of this study was to evaluate long-term platinum retention in patients treated with cisplatin and oxaliplatin. 相似文献15.
By C. Schlechtriem J. E. Bron D. R. Tocher 《Zeitschrift fur angewandte Ichthyologie》2009,25(1):120-123
Fish are the most important source of n-3 highly unsaturated fatty acids (HUFA) in the human diet and, with declining wild stocks, an increasing proportion is being provided by aquaculture. Paradoxically, aquaculture fish diets have traditionally incorporated fish oil and meal derived from wild fisheries. Continued aquaculture development requires fish oil to be replaced with vegetable oils, the only sustainable alternative. However, vegetable oils lack n-3 HUFA and so flesh from fish reared on these diets can also have reduced n-3 HUFA and thus reduced nutritional quality. This accepted, the flesh n-3 HUFA content should be an economically important trait, however to be included in the breeding goal the trait must be measurable. In the present study, we investigated whether the flesh n-3 HUFA content of salmon can be estimated in a non-fatal way. We showed that a general regression model based on flesh lipid content, morphometric and blood fatty acid measurements could estimate and predict flesh n-3 HUFA content. This would allow a choice from a range of selection methods, including mass selection or within-family selection, if this important flesh quality trait is to be included in future salmon breeding programmes. 相似文献
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Martin A. Pearce Ian Jarvis Bruce A. Tocher 《Palaeogeography, Palaeoclimatology, Palaeoecology》2009,280(1-2):207-234
Organic-walled dinoflagellate cyst (dinocyst) and geochemical records across the Cenomanian–Turonian boundary (CTB) are presented for the NW European reference section at Eastbourne, England. Dinocyst and nannofossil fertility indexes indicate that an upwelling-driven productivity pulse accompanied a eustatic sea-level fall that preceded, by at least 40 kyr, the global rise in δ13C values that marks the onset of Oceanic Anoxic Event 2 (OAE2) and the deposition of black shales in the deep ocean. A marine productivity collapse in the latest Cenomanian is evidenced by the falling absolute and relative abundance of peridinioid dinocysts, believed to be the product of heterotrophic dinoflagellates. This biotic change accompanied transgression and sharply rising sea-surface temperatures, following an Atlantic-wide episode of short-lived cooling. Geochemical tracers provide evidence of Caribbean–Colombian plateau volcanism. The increase in water depth caused by the latest Cenomanian transgression resulted in less eutrophic waters in epicontinental seas, where CTB biotic turnover was driven largely by water-mass changes rather than oxygen depletion. The species richness/absolute abundance ratio of dinocysts is proposed as a water-mass stability proxy. 相似文献
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Pedro F. Almaida-Pagán Alejandro Lucas-Sánchez Douglas R. Tocher 《Biochimica et Biophysica Acta (BBA)/Molecular and Cell Biology of Lipids》2014,1841(7):1003-1011
Considering membranes and membrane components as possible pacemakers of the main processes taking place inside mitochondria, changes in phospholipids or fatty acids could play a central role linking different mechanisms involved in cumulative damage to cell molecules and dysfunction during periods of high stress, such as rapid growth and aging. Changes affecting either lipid class or fatty acid compositions could affect phospholipid and membrane properties and alter mitochondrial function and cell viability. In the present study, mitochondrial oxidative status and mitochondrial membrane phospholipid compositions were analyzed throughout the life-cycle of zebrafish. TBARS content significantly increased in 18-month-old fish while aconitase activity decreased in 24-month-old fish, which have been related with oxidative damage to molecules. Mitochondria-specific superoxide dismutase decreased in 24-month-old animals although this change was not statistically significant. Age affected both mitochondrial phospholipid content and the peroxidation index of most phospholipid classes suggesting that oxidative damage to mitochondrial lipids was occurring. 相似文献