M. V., 1982, Stable isotopes of helium, nitro- gen and carbon in a coastalsubmarine hydro- thermal system: Jour. Volcanol. Geother- maZRes.,,VoL 12, No. 1-2, pp. 101-110.Vida1, F.V., Welhan, J.A., and Vida], V.M.V., Stable Iso- topes of Helium, Nitrogen and Carbon...
Stable Isotopes (Chinese) Print PDF 稳定性同位素 除非另有说明,所有的稳定性同位素报价是以元素的毫克重量来计量的。在具体的稳定性同位素介绍中有列出该同位素产品可选的标准丰度值范围。所有的报价都基于报价时候可供应的库存情况。点击以下元素的名字或者符号获取更多该元素的同位素产品讯息。
Energy levels for the stable isotopes of atomic helium(4He I and 3He I) We calculate very accurate ab initio ionization energies for both 4 He I and 3 He I as well as the isotope shifts for n=1 to 10, L=0 to 7 and combined these with precise laboratory data to produce a new ...
as an established water (paleo)thermometer5,8,9,10,11,12,13,14. The research involving different stable isotopes has so far been almost exclusively focused on the carbonate fraction of shells1. However, shells, being biogenic structures, are also composed...
Proton-Rich IsotopesNucleosynthesisHeavy ElementsThe beginning of our universe as we know and interpret it was the Big Bang. About 14 billion years ago, the entire universe started to expand. This expansion was accompanied by a global cool down of all matter and radiation forming the universe. ...
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6) stable isotopes 稳定同位素 1. The characteristics ofstable isotopesin Larma gold deposit and the genesis of its ore depdsit; 拉尔玛金矿床稳定同位素特征及矿床成因 2. Primary research on geochemistry ofstable isotopesin the Bofang copper deposit,Hunan; ...
[1] Isotopes of helium and neon and the H218O/H216O ratio of water are proven proxies for melt from glacial ice beneath floating ice shelves and at ice shelf fronts. Their high concentrations in glacial meltwater, compared to other environmental sources, make them ideal tracers for studies ...
15N-Tracer technique with the MIP-OES detection of stable N-isotopes for soil ecological studies 来自 掌桥科研 喜欢 0 阅读量: 43 作者:G Heltai,T Jozsa 摘要: For soil N-transformation studies the stable isotopic 关键词:Ratio mass-spectrometer Atomic emission-spectrometry Nitrogen Analyzer N-15 ...
Stable isotopes 10.1Introduction Since the first discovery of hydrothermal vent communities in 1977, the stable isotopic signatures of chemosynthesis-based animal species have been used to evaluate the isolation of vent communities from the usual marine food web systems that are supported by photoautotrop...