Igneous Carbonatites in North China Craton: The Temporal and Spatial Distribution, Sr and Nd Isotopic Charateristics and Their Geological significance
华北克拉通火成碳酸岩时空分布和锶钕同位素特征及其地质意义，阎国翰；牟保磊；曾贻善；蔡剑辉；任康绪；李凤棠-66文免费论文库，大学生论文库
Based on lithopaleogeography of the waterbearing media and its spatial distribution of Ordos Cretaceous artisan basin and the features of regional groundwater flow regime, hydrogeochemistry regime and monitoring data about the groundwater level and isotopic analysis at different depth sampled by Packer sampling system in the deep drilling holes, the authors have explored the main characteristics of the groundwater systems in CAB. The groundwater flow system in CAB can be classified into three types: local flow system, medium flow system and regional system.
在对鄂尔多斯盆地白垩系岩相古地理和含水介质空间展布研究的基础上，应用区域地下水动力场、水文地球化学场和深井Packer系统所获得的不同深度的水位数据以及同位素资料，将白垩系地下水流系统概括为局部水流系统、中间水流系统和区域地下水流系统3种类型。
Based on the isotopic compositions of samples and their distribution characteristics on the _-T, ~(87Sr/~(86)Sr_i-T, and _-_ diagrams, these granitoids of syntexis series are considered as mixing products of upper crust end-member and depleted mantle end-member in certain proportion.
根据样品的同位素组成及其在￠Nd-T，(87Sr/86Sr)i-T和￠Nd-￠Sr图上的分布特征，认为这些同熔系列花岗岩类是华南上地壳端员和亏损地幔端员按一定比例混合的产物。
The oceanic volcanic basalts and diabase associated with the Rinbung ophiolite, east end of the segment, are similar to oceanic island alkalic basalt series with respect to many aspects such as enrichment of Ti, P and total alkalis, the enrichment distribution patterns of LREE; and a decreasing trend of the normative value of incompatible elements to primitive mantle with their incompatibility in the spider diagram. Significantly, Sr-Nd isotopic ratios of the Rinbung OIAB display an evolution trend from DM to EMⅡwith no crustal contamination and and similar to the OIAB of Keguelen(the NinetyEast Ridge hotspots of Indian ocean).
仁布地区新厘定出一套洋岛碱性玄武岩和辉绿岩，Ti、P含量较高，轻稀土强烈富集，大离子亲石元素和高场强元素也明显富集，蛛网图显示随元素不相容性降低，其原始地幔标准化值逐渐降低，具较高的~(87)Sr／~(86)Sr比值，εNd平均为5.4，显示DM向EMⅡ的演化趋势；这些特征表明辉绿岩少有地壳混染，可能代表了特提斯洋内热点，并类似Kerguelen洋岛碱性玄武岩(印度洋Ninety East Ridge洋岛链)，暗示印度洋可能继承了特提斯洋的物质组成。
The following results were achieved:1 By generation-expulsion simulation experiment, the potentials of oil generation of the source rock samples were evaluated and the influence of secondary crack was also evaluated. The expulsion efficiency and fractional effects during expulsion were evaluated, too.2 Numerical models were established to simulate how terrestrial source rocks generate and expel out oil according to the characteristics of source rocks, such as maceral compositions, HI values, porosity, specific surface areas and the different generation behavior at every stage. The research also evaluated how the parameters of Qv and nano-porosity affect expulsion efficiency and fractionation.3 The total carbon isotopic fractionation effect during generation-expulsion process of different terrestrial source rocks was evaluated. It is also evaluated that to what extent the primary crack of different kerogens and secondary crack of hydrocarbons can affect the carbon isotopic fractionation during the generation-expulsion process. It is demonstrated that there are different fractionation effects in different source rocks. The distribution pattern of the carbon isotopic compositions of the individual n-alkanes shows almost no change during this process. All of these should be considered in oil-source correlations.4 The result of the primary migration simulation suggests that there are different carbon isotopic fractionation effects in the primary migration of different source rocks. Diffusion capacities of hydrocarbons in different source rocks are very different, which should be responsible for the carbon isotopic fractionation.
取得的成果主要包括以下几个方面：1 通过生排烃热模拟实验，完成了对以煤为主的陆相烃源岩的生液态烃烃能力以及生气能力的评价，评估了二次裂解的影响，同时完成了对各烃源岩排烃效率和化学组分分馏的评估； 2 根据煤的显微组分组成、TOC、HI指数、煤的孔隙度、比表面积等参数，以及在不同热演化阶段的生烃特征，使用GCR模型进行了数值模拟；对影响排烃效率和化学组分分馏的溶胀度和大—中孔孔隙度、纳米孔隙度的影响大小及作用机理进行了研究； 3 评估了各烃源岩生排烃过程中的碳同位素分馏效应，以及初次裂解、二次裂解等影响碳同位素分馏的因素及其影响的大小；证明了不同烃源岩在生排烃过程中存在不同的碳同位素分馏行为；同时也证明了生排烃过程不影响正构烷烃单体碳同位素组成曲线的形状； 4 通过初次运移模拟实验证明了烃类在不同类型烃源岩中发生初次运移能够产生不同程度的物理碳同位素分馏效应；烃类分子在不同类型烃源岩中的扩散度差别很大，可能是造成同位素分馏的主要原因。
This paper is concerned with uptake, distribution and metabolism of monocrotophos in cotton seedling after treatment of stem-smear by combining the isotopic technique with the practical applied method.
本文采用放射性同位素示踪技术研究了久效磷在棉苗体内的吸收，分布和代谢。
There is an obviously genetic relationship between the solid bitumen in Well Po2 of Feixianguan Formation and the kerogen(derived from the hydrocarbon source rock) in Well Guan5 of Feixianguan Formation according to distribution and molecular carbon isotopic compositions of the saturated hydrocarbon of catalytic hydropyrolysis products. A evidence that the source rock in Feixianguan Formation has contributions to the gas pools of Feixianguan Formation can be acquired.
可溶有机质饱和烃、芳烃生物标志物对比表明，上二叠长兴组烃源岩是主要来源，飞仙关组、下志留统烃源岩亦有贡献；催化加氢产物饱和烃及其正构烷烃单体碳同位素组成显示，飞仙关组海槽相烃源岩对飞仙关组气藏有贡献。
Nd isotopic variations and its implications in the recent sediments from the northern South China Sea Vertical distribution of dinoflagellate resting cysts in recent sediments from the Changjiang River Estuary and adjacent waters
南海北部近代沉积物钕同位素分布及意义长江口及其邻近海域近代沉积物中甲藻孢囊的垂直分布
Investigation of adsorption, distribution and migration of lead between environment and plant by stable lead isotopic tracer
铅在植物-环境体系中的吸收、分布和迁移规律的稳定同位素示踪法研究
All oil subsets have obvious differences in carbon number distribution curves of n-alkane, sterane composition, Pr-to-Ph ratio and carbon isotopic ratio and also exhibit a regular distribution geographically.
各类原油的正构烷烃碳数分布曲线、甾烷碳数分布、Pr/Ph值和碳同位素组成等指标有明显差异，在盆地内呈区域性分布。
These effects of CCC were suggested to be the modification of the carbohydrate metabolism and the relation between source and sink of plants (Deng and Prange, 1988).But the effects of CCC on photosynthesis of potato leaf and its photosynthetic productivity were poorly understood (Jansen et al., 2001; Navrátil et al., 2007).Yet very few attention focused on the effects of CCC on transport and distribution of photoassimilates in potato. Therefore, it is important to study the effects of foliar spray of CCC on the photosynthetic characteristics of potato leaves, transport and distribution of 14C -photoassimilates in potato such as 14C-soluble sugar and 14C-starch with 14CO2 isotopic tracer technique. To our knowledge, these effects have not been systemically studied.
这些影响的中华基督教会被建议要修改的碳水化合物代谢及关系的源和汇的植物（邓小平和prange ，1988年），但影响CCC对光合作用的马铃薯叶片及其光合生产力的了解甚少（扬森等人，2001年； navrátil等人，2007年），但很少注意力集中在影响CCC对运输和分配photoassimilates在potato.therefore ，这是很重要的影响进行研究叶面喷施的CCC对光合特性的马铃薯叶片，运输和分配为14 C - photoassimilates在马铃薯等14碳-可溶性糖和1 4C -淀粉与1 4co2同位素示踪t echnique.to据我们所知，这些影响尚未系统研究。
Study on Distribution and Transportation of Rare Earth Element Tb in Chicken by~(160) Tb Isotopic Tracing
~（160）Tb同位素示踪研究稀土元素铽在雏鸡体内的分布和转运
The carbon isotopes of individual n-alkanes in the crude oils from the Qaidam Basin were measured by the new isotopic analytical technique of GC-C-MS. Their composition features and distribution patterns of carbon isotopes were studied and the genesis of the crude oils were discussed.
利用GC-C-MS技术测定柴达木盆地原油单体正构烷烃碳同位素组成，研究它们的碳同位素组成特征和分布型式，以探究原油的成因。
The content and distribution of hydrargyrum in waste battery was determined using dithizone, including the leaching of hydrargyrum in different water environment. the isotopic method;
用双硫腙法测定了几种废电池中汞的含量和分布及在不同水环境条件下，汞的浸出率，试图为废电池中各组分去汞后的回收提供理论依据。
Through an integrated analysis of the types of tectonic deformation and metamorphism, order of their formation, emplacement of plutons and isotopic age data, this paper discusses the regional distribution and formation ages of metamorphic rocks and their role and significance in the process of crustal evolution.
通过对构造变形与变质特征、形成序次、深成岩侵位及同位素年龄资料的综合分析，阐明变质岩的区域分布和形成时代，及其在地壳演化中的作用和意义。
The comprehensive study of distribution of placer gold, intersection of one rock/ore vein system with another, and isotopic age determination for ores, reveals that the main metallogenic ageof Au, Ag deposits in the area is the late Yanshanian period.
本文通过对砂金分布、岩矿脉体穿插关系以及矿石同位素测年结果等实际资料的综合研究分析，证明本区金银矿床的主成矿期应为燕山晚期；
Distribution Characteristics of Hydrogen and Oxygen Isotopic Compositions and~(14) C Ages in Confined Water of Yinchuan Plain
银川平原承压水氢氧同位素组成与~（14）C年龄分布特征