同位素

There are some distinct geochemical differences between the organic and inorganic gases, mainly in chemical composition and the composition of isotopes.

无机成因天然气与生物成因天然气在地球化学特徵上存在显著的差异，主要表现在化学成分和同位素组成特徵。

The differences between these curves could be interpreted by the variation in location, insolation and monsoon.

而粒度均值曲线与冰心及石笋氧同位素曲线的差异，一方面可能是由于地理位置的差异，另一方面可能与当时太阳辐射变化情况以及季风作用有关。

Meanwhile, they show high abundances of Sr and Ba and high Sr/Y and La/Yb. The volcanic rocks have varied and enriched Nd isotopic compositions ε(subscript Nd=-11~-17, which plot intermediately between the field of the ancient continental crust and the field of the enriched subcontinental lithospheric mantle. These geochemical signatures indicate that the volcanic rocks of the Tiaojishan and Donglingtai Formations were originated from a process of hybridization between the enriched mantle-derived mafic magma and the lower continental crust.

火山岩的钕同位素成分变化大，且相当富集ε(下标 Nd=-11~-17，都分布在古老下地壳和富集地幔之间，因此推断北京西山地区髫髻山组火山岩和东岭台组火山岩的形成与富集地幔起源的基性岩浆与古老下地壳组分相互作用有关。

ISOL is a complicated system which involves nuclear reaction, diffusion and effusion, high temperature, ionization, isobar separation and very low intensity ion beam diagnose.

为满足各个领域的大量需求，原子能科学研究院也在准备建造放射性核束装置，它包括新建的100MeV，200uA回旋加速器，新建的在线同位素分离器。

Objective To establish and optimize proteomic research platform using isobaric tags for relative and absolute quantitation so as to facilitate further proteomic research of human renal proximal tubular epithelial cells.

目的 建立并优化人肾小管上皮细胞蛋白质组学分析所需的相对和绝对定量的同位素标签试剂标记技术，为进一步研究奠定基础。

The isotopic ages,such as Pb-Pb model age of galena,Rb-Sr isochrone age of sphalerite and pyrite,indicate that there exist mineralization concentration in Jinding deposit at middle-late Trias(230Ma±),which must be the era of ore sources.

由方铅矿等矿石矿物的Pb-Pb模式法、闪锌矿和黄铁矿Rb-Sr法同位素定年结果显示，金顶矿床在中-晚三叠世(230Ma左右)时有一期矿化富集作用，可能代表了矿源的时代。

Through U-Pb isotope age study in sheeted dike complex, has gained the isochrone age is114-133Ma.The age is early cretaceous,which indicates the time of formation of sheeted dikecomplex.

另外，在该蛇绿岩套中的岩墙群进行了单颗粒锆石U－Pb同位素测年，获得的表面年龄值为 114－133Ma 之间，时代为早白垩世，基本反映了席状岩墙群的成岩年龄。

Gold deposit; quartz fluid inclusion; Rb-Sr isochrone age; sulfur isotope; Jiangnan orogenic belt; eastern Hunan province, South China

文章对江南造山带中段湖南东部地区主要金矿床开展了成矿年龄测定和硫同位素分析。

An experiment of this type is currently underway at GSI and planned for ISOLDE/CERN.

就目前能够提供的实验设备和手段，对于不稳定锂的同位素(上标 8，9)Li和短寿命丰中子晕核11Li而言，这是能够得到与核模型相独立的电荷半径值的唯一可行的方法。

Ore forming hydrothermal solution constituent,ore forming temperature,hydrogen and oxygen isotope,Rb Sr isopleth,etc,it is proved to be an altered wallrock type of gold deposit appearing in beresitization vein,thus opening favorable prospects of finding gold in this area.

研究了胶东地区新发现的辉寨金矿床，依据围岩蚀变分带特征，成矿热液组分、成矿温度、氢氧同位素、Rb—Sr等时线数据等，该矿床为产于黄铁绢英岩中的蚀变岩型金矿床，由此扩大了该区找金前

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。