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- They compared the hydrogen and oxygen isotopic ratios in the hair with tap water from each location, and found that they matched. 比对来自每一处毛发中自来水留下的氢及氧的同位素比率,发现比率是匹配的。
- Oxygen isotope ratio 氧同位素
- The isotope ratio is directly used for comparing oils or gases. 同位素比率直接用于比较各种石油或天然气。
- Calculation of oxygen isotope model temperature in minerals. 矿物氧同位素模式温度计算。
- “Why meteoritic oxygen isotope ratios are significantly different from those on Earth has mystified scientists for years. 为什么地球上矿石中氧同位素比率会出现显著差异,这一点使科学家们迷惑许多年。”
- Seasonal variations in oxygen isotope ratios of daily collected precipitation and wind drift samples and in the final snow cover at Dome Fuji Station, Antarctica 南极Dome Fuji站每日收集的降水和漂流样品及最终的雪盖的氧同位素比率的季节性变化
- The atmospheric helium isotope ratio: Is it changing? 大气氦同位素比率在变化吗?
- The composition of oxygen isotope is a good tool to trace the origin and formation environment of sulfate. 摘要氧同位素组成是一个非常有效的示踪硫酸盐的起源和形成环境的工具。
- Stable isotope ratio analysis is an effective method for the identification of fruit juice adulteration. 稳定同位素分析法就是根据这种差异对掺假果汁进行准确鉴别的有效方法。
- Title: Hydrogen and oxygen isotope geochemistry of high to ultrahigh pressure metamorphic rocks from Southeast Dabie. 关键词:大别山;超高压;变质岩;氢同位素;氧同位素;水-岩相互作用
- OXYGEN ISOTOPE COMPOSITION OF ANHYRITE IN EARLY STAGE VEINS, MINRAL PARK PORPHYRY SYSTEM, WALLAPAI MINING DISTRICT, ARIZONA, U. S. A. 美国Wallapai矿区Mineral Park斑岩型矿床早期矿脉中硬石膏的氧同位素组成
- There are differences between natural and adulterated juices in stable isotope ratio. 天然果汁与掺假果汁之间在稳定同位素比率方面存在着差异。
- This paper analysed the carbon and oxygen isotope composition of brachiopods fossils from the Devonian Period in Sichuan Province. 本论文对来自四川龙门山泥盆纪的腕足化石进行碳、氧同位素分析。
- According to characteristics of oxygen isotope, the surrounding inclusions temperature of the powder quartzite, it discusses the source and genesis of the powder quartzite. 根据氧同位素、包裹体测温以及周围岩石特征,讨论了微结晶石英岩的硅质来源和成因。
- To be sure, some scientists suggest that life could have evolved differently on Titan than on Earth or that the inorganic isotope ratio may be different there. 不过,还是有些科学家指出,可能是泰坦和地球上的生命演化过程不同,或是无机同位素比率不一样。
- Based on hydrochemistry, REE, carbon and oxygen isotope analyzing, possible leakage way of the Air-Cushioned Surge Chamber is studied in the Xiaotiandu power-station. 摘要利用水化学、稀土元素和碳氧同位素的分析方法探讨了小天都电站调压室可能的渗水途径。
- Analytical services include potassium-argon age determinations, stable isotope ratio analyses, radiocarbon age determinations as well as other radiometric analyses. 分析包括钾-氩测年,稳定同位素丰度分析,放射性碳测年,以及其他放射性分析。
- Correlation between carbon and oxygen isotopic ratios of lacustrine carbonates and types of oil-producing paleolakes 湖相碳酸盐氧碳同位素的相关性与生油古湖泊类型
- This paper has in detail analyzed and discussed stable oxygen isotope,glacial accumulation,the dating technique of ice core and environmental indices recorded in ice core. 南极地区和北极地区是冰芯研究最早的地区,在气候变化研究中起领先的作用。
- PALEOLIMNOLOGICAL SIGNIFICANCE OF CARBON AND OXYGEN ISOTOPIC RATIOS OF OSTRACODA FROM OIL SOURCE ROCKS IN DONGYING DEPRESSION 东营凹陷生油岩中介形虫氧、碳同位素的古湖泊学意义