Carbon isotopic fractionation in lipids from methanotrophic bacteria II: the effects of physiology and environmental parameters on the biosynthesis and isotopic signatures of biomarkers [0.03%]
产甲烷菌脂质的碳同位素分馏作用Ⅱ：生理和环境参数对生物标志物合成及同位素特征的影响
L L Jahnke,R E Summons,J M Hope et al.
L L Jahnke et al.
Controls on the carbon isotopic signatures of methanotroph biomarkers have been further explored using cultured organisms. Growth under conditions which select for the membrane-bound particulate form of the methane monooxygenase enzyme (pMM...
Comparative Study
Geochimica et cosmochimica acta. 1999 Jan;63(1):79-93. DOI:10.1016/s0016-7037(98)00270-1 1999
Recognition of > or = 3850 Ma water-lain sediments in West Greenland and their significance for the early Archaean Earth [0.03%]
格陵兰西部发现超过38.5亿年的沉积证据及对早太古宙地球的意义
A P Nutman,S J Mojzsis,C R Friend
A P Nutman
A layered body of amphibolite, banded iron formation (BIF), and ultramafic rocks from the island of Akilia, southern West Greenland, is cut by a quartz-dioritic sheet from which SHRIMP zircon 206Pb/207Pb weighted mean ages of 3865 +/- 11 Ma...
Comparative Study
Geochimica et cosmochimica acta. 1997;61(12):2475-84. DOI:10.1016/s0016-7037(97)00097-5 1997
Sulfur isotope fractionation during bacterial sulfate reduction in organic-rich sediments [0.03%]
富有机质沉积物中细菌硫酸盐还原过程中的硫同位素分馏效应研究
K S Habicht,D E Canfield
K S Habicht
Isotope fractionation during sulfate reduction by natural populations of sulfate-reducing bacteria was investigated in the cyanobacterial microbial mats of Solar Lake, Sinai and the sediments of Logten Lagoon sulfuretum, Denmark. Fractionat...
Comparative Study
Geochimica et cosmochimica acta. 1997 Dec;61(24):5351-61. DOI:10.1016/s0016-7037(97)00311-6 1997
R Sugisaki,K Mimura
R Sugisaki
Analyses of 227 rocks from fifty localities throughout the world showed that mantle derived rocks such as tectonized peridotites in ophiolite sequences (tectonites) arid peridotite xenoliths in alkali basalts contain heavier hydrocarbons (n...
Geochemical constraints on chemolithoautotrophic metabolism by microorganisms in seafloor hydrothermal systems [0.03%]
海底热液系统中化学自养微生物代谢的地球化学限制条件
T M McCollom,E L Shock
T M McCollom
Mixing of hydrothermal fluids and seawater at the ocean floor, combined with slow reaction kinetics for oxidation/reduction reactions, provides a source of metabolic energy for chemolithotrophic microorganisms which are the primary biomass ...
Polycyclic aromatic hydrocarbons (PAHs) in Antarctic Martian meteorites, carbonaceous chondrites, and polar ice [0.03%]
南极火星陨石、碳质陨石和极地冰中的多环芳烃(PAHs)
L Becker,D P Glavin,J L Bada
L Becker
Recent analyses of the carbonate globules present in the Martian meteorite ALH84001 have detected polycyclic aromatic hydrocarbons (PAHs) at the ppm level (McKay et al., 1996). The distribution of PAHs observed in ALH84001 was interpreted a...
Comparative Study
Geochimica et cosmochimica acta. 1997;61(2):475-81. DOI:10.1016/s0016-7037(96)00400-0 1997
Prediction of the thermodynamic properties of aqueous metal complexes to 1000 degrees C and 5 kb [0.03%]
金属水合物的热力学性质预测（273~1273K及0~5kb条件）
D A Sverjensky,E L Shock,H C Helgeson
D A Sverjensky
A large number of aqueous metal complexes contribute significantly to hydrothermal, metamorphic, and magmatic processes in the crust of the Earth. Nevertheless, relatively few thermodynamic data other than dissociation constants (K) for a f...
Dissolution kinetics of a lunar glass simulant at 25 degrees C: the effect of pH and organic acids [0.03%]
模拟月球玻璃在25摄氏度下溶解动力学:pH值和有机酸的影响
M J Eick,P R Grossl,D C Golden et al.
M J Eick et al.
The dissolution kinetics of a simulated lunar glass were examined at pH 3, 5, and 7. Additionally, the pH 7 experiments were conducted in the presence of citric and oxalic acid at concentrations of 2 and 20 mM. The organic acids were buffer...
Inorganic species in geologic fluids: correlations among standard molal thermodynamic properties of aqueous ions and hydroxide complexes [0.03%]
地球流体中无机物质的摩尔热力学性质标准值及离子和氢氧化物复盐的相关性
E L Shock,D C Sassani,M Willis et al.
E L Shock et al.
Correlations among experimentally determined standard partial molal thermodynamic properties of inorganic aqueous species at 25 degrees C and 1 bar allow estimates of these properties for numerous monatomic cations and anions, polyatomic an...
Summary and implications of reported amino acid concentrations in the Murchison meteorite [0.03%]
默奇森陨石中氨基酸浓度的报告总结及其意义
E L Shock,M D Schulte
E L Shock
A study of literature reports of the concentrations of amino acids in extracts from the Murchison meteorite shows that many of the concentration ratios are constant. There are two possible interpretations of these ratios. One is that they a...