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- carbon isotope anomaly 碳同位素异常
- These neutrons react with nitrogen nuclei, giving out a proton and producing the active carbon isotope 14. 这些中子跟氮元素的核子产生反应，释放出一个质子并产生出活性碳同位素14。
- These neutrons react with nitrogen nuclei,giving out a proton and producing the active carbon isotope 14. 这些中子跟氮元素的核子产生反应，释放出一个质子并产生出活性碳同位素14。
- Carbon isotope techniques can be used to study the allocation and turnover of recently photosynthesized C. 植物近期光合C分结构性C和代谢C；
- Its methane carbon isotope is heavier than -40‰ , ethane carbon isotope is heavier than -28‰ . 其甲烷碳同位素值均大于-40‰,乙烷碳同位素值大于-28‰。
- Diet composition hada large effect on stable carbon isotope composition of cattle tissues. 饲料对牛组织中碳同位素组成的影响远大于牛品种对它们的影响；
- In terms of the carbon isotope values,it is believed that inorga nic CO 2 exists in well Su5 in Suligemiao and well Lin1, Lin5 in Jingbian. 靖边林 1、林 5井为无机CO2 气 ,陕参 1井为有机CO2 气。
- The method to combine the kinetics of carbon isotope with that of hydrocarbon generation has great advantages in discussing the source of oil and gas. 生烃动力学和碳同位素动力学结合在这方面具有非常明显的优越性。
- Oil of Wutonggou and Pingdiquan formation came from Pingdiquan group source rock of Permain by biomarker and carbon isotope correlateion. 原油碳同位素和生物标志化合物对比表明二叠系储层的稠油来自凹陷二叠系平地泉组源岩。
- Wright G C,Nageswara Ra0 R C,Farquhar G D.Water use efficiency and carbon isotope discrimination in peanut under water deficit conditions[J]. 林植芳彭长连等.;大豆和小麦不同基因型的碳同位素分馏作用及水分利用效率[J]
- It is important to reflect and analyze the environment by distilling the information of tree ring stable carbon isotope. 通过对树木年轮中稳定碳同位素信息的提取反映环境变化具有重要的理论和实际意义。
- We also bring forward a new method to recognize the different biological source for C29 sterane predominance using organic carbon isotope. 此外，本文还提出了用有机碳同位素来进一步区分C29甾烷优势生物来源的方法。
- The application value of traditional method to explore the oil and gas source using carbon isotope was bounded by the type and maturity of source rock. 利用气体碳同位素探索油气来源的传统方法由于受源岩类型、源岩成熟度等因素的影响,其实际应用受到很大的限制。
- The authors present carbon isotope data of organic matter in Co-rich ferromanganese crust from central Pacific seamount area. 富钴结壳组成与生长环境之间的关系研究对这种未来资源的准确评价和合理利用有重要意义。
- Based on the studies of molecular and carbon isotope of the nature gases that are from over 40 drillings and gas-seeps of the surface. 根据对准噶尔盆地典型低演化阶段侏罗系煤系烃源岩热模拟实验所产烃类气组分碳同位素的分析测试,研究了盆地赋存天然气的类型、热演化程度和赋存的地质条件。
- The desorbed methane carbon isotope of coal core samples collected from Jincheng area, South Qinshui basin was measured. 摘要对取自沁水盆地南部晋城地区的煤芯样中的解吸气进行了甲烷碳同位素测定。
- Sulphur can influence the carbon isotopes of gaseous hydrocarbon. 单质硫还会影响气态烃碳同位素组成。
- It is often unpleasant to see an anomaly animal. 见到一只畸形动物常常会使人感到不快。
- Then the stable carbon isotope composition of PAH series such as alkyl naphthalene and alkyl phenanthrene in crude oil samples of Tuha basin were determined on GC-IRMS. 并通过色谱-同位素比值质谱（GC-IRMS）技术对吐哈盆地原油中烷基萘和烷基菲等系列化合物的碳同位素组成进行测定。
- Hydrocarbon generated from Middle-Lower Jurassic coal beds as the main source rock in the basin has remarkably high Pr/ph ratio as well as heavy carbon isotope and C29 sterane. 中、下侏罗统煤系地层是主要的烃源岩，这套源岩生成的油气具有显著的姥鲛烷优势、重碳同位素以及富含C29甾烷等特征。
