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- 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。
- Characteristic of Organic Carbon Isotope Composition in Coal-bearing Strata 煤系地层中有机质碳同位素组成特征
- COMPOSITION OF ORGANIC CARBON ISOTOPE OF EARLY CAMBRIAN BLACK SHALE IN THE XIANG-QIAN AREA AND ITS SIGNIFICANCES 湘黔地区早寒武世黑色页岩有机碳同位素组成变化及其意义
- The records of amino acids and organic carbon isotope for Holocene megathermal in Changbaishan Area 长白山区全新世大暖期的氨基酸和碳同位素记录
- CARBON ISOTOPE COMPOSITION IN SOIL MICROBIAL BIOMASS AND ORGANIC CARBON ISOTOPE EFFECT 贵州山区土壤微生物生物量的碳同位素组成与有机碳同位素效应
- Organic carbon isotope records of the Poyang Lake sediments and their implications for the paleoclimate during the last 8 ka 鄱阳湖沉积物近8ka来有机质碳同位素记录及其古气候变化特征
- COMPOSITIONS OF ORGANIC CARBON AND NITROGEN AND CARBON ISOTOPE OF POSTGLACIAL SEDIMENTS IN THE YANGTZE RIVER DELTA AND THE PALEOENVIRONMENT IMPLICATION 长江三角洲冰后期沉积物的有机碳氮和有机碳同位素组成与古环境指示
- Paleoclimate Significance of the Total Organic Carbon and Organic Carbon Isotope and Magnetic Susceptibility of the Jiangling Section, Jianghan Plain, Hubei Province 江汉平原江陵剖面有机碳含量、碳同位素和磁化率的古气候意义
- VARIATION OF SOIL ORGANIC CARBON ISOTOPE AND C_3/C_4 VEGETATION TYPE TRANSITION IN THE WESTERN LOESS PLATEAU DURING THE LAST GLACIAL AND HOLOCENE PERIODS 黄土高原西部地区末次冰期和全新世有机碳同位素变化与C_3/C_4植被类型转换研究
- organic carbon isotope 有机碳同位素
- stable organic carbon isotope 古生产力
- 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。
- A naturally radioactive carbon isotope with atomic mass 4 and half-life 5,780 years, used in determining the age of ancient organic, geologic, or archaeological specimens. 碳4:一种碳的天然放射性同位素,原子量为4,半衰期为5,780年,用于测定古代生物标本,地质标本或考古遗迹的标本的年代
- 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。
- Zn situation of vegetable garden soils and its relation to soil organic carbon. 菜园土壤锌营养状况及其与土壤有机碳的关系。
- Dissolved organic carbon (DOC) is an important part of soil carbon pool. 溶解有机碳(Dissolved Organic Carbon,简称DOC)是土壤碳库的重要组成部分。
- 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;