分布学

According to the principle of strontium isotope stratigraphy, we attempt to determine the age of the boundaries for Campanian/Santonian and Maastrichtian/Campanian by 87Sr/86Sr ratios for Gamba section in southern Tibet.

在与国际上同期海相地层锶同位素演化曲线对比的基础上，研究了晚白垩世海相碳酸盐锶同位素组成与主要地质事件的关系；在将本研究锶同位素数据融入到全球中新代海水锶同位素曲线的基础上，综合作出了中新生代海平面变化和锶同位素对照曲线，讨论了全球风化速率，造山事件，气候，海平面变化以及灾变性事件对中新生代海水锶同位素的控制作用；根据锶同位素地层学原理，本研究尝试将碳酸盐锶同位素组成用于海相地层定年上，利用已有的全球海水87Sr/86Sr值-年龄数据库和测试的藏南晚白垩海相碳酸盐的87Sr/86Sr值，确定了岗巴剖面Campanian/Santonian和Maastrichtian/Campanian阶界线，标定了广泛分布于白垩纪的厚壳蛤化石的年龄；本研究还将这些方法推广到了塔里木盆地井下奥陶纪地层的年龄标定，确定了中/上，中/下奥陶统界线，从锶同位素角度获得了古岩溶作用证据，显示锶同位素地层学在解决海相地层对比，年龄确定及在岩溶型油气储层研究中的潜在价值和良好应用前景。

In the present paper,the floristic characteristics,community structure,population structure,spatial distribution and regeneration pattern of Cryptomeria fortunei were analyzed and discussed at 1 100 m on Mt.

运用系统的群落学调查方法对天目山分布于海拔1100m处的柳杉Cryptomeriafortunei群落进行调查，分析其种类组成和群落结构特征，并对柳杉的种群结构和分布格局进行了探讨。

Firstly, the relation between cumulative distribution function and aggregate size are available based on stereological theory.

首先，根据体视学原理，得到了骨料累计分布函数与粒径之间的关系，利用Fortran语言编制程序，计算出骨料的粒径和位置，模拟了混凝土二维圆形骨料的随机分布，随后根据材料的细观结构，建立起了混凝土的数值模型。

Quantitative textural analysis of igneous rocks has been improving the traditional qualitative and semi-quantitative petrographic methods to a new level that can be compared to geochemical analysis, which including crystal size distribution, spatial distribution pattern, crystal alignment factor and dihedral angle etc.

定量化火成岩结构分析将传统的定性或半定量化的岩相学研究，提高到了与岩石地球化学分析相比拟的定量化程度，实现了诸如晶体粒度分布、晶体空间分布、晶体定向程度分析和二面角测量等方面的定量化研究。

Radiologic studies support this finding, in that lesions seen in NBS are not compatible with arterial territories. Furthermore, significant perilesional edema with a tendency to disappear or to leave disproportionally small residua on follow-up studies has been reported.

影像学研究也支持这一发现，因为病灶的分布不符合动脉解剖分布，而且，灶周明显的水肿随时间推移而逐渐消失或遗留下小的、不匀称的后遗症病灶。

This paper introduces the development of Pareto Distribution Family and it's application in Economics, Sociology, Euthenics and Actuarial Statistics.

本文首先对Pareto分布的发展作了简单的介绍，并介绍了Pareto分布族在经济学、社会学、环境学、保险精算学中的广泛应用。

The mathematical models of the charges and the additional electric field in the changed dust layer are developed by the electrostatics.

本文基于静电学理论导出了带电粉尘层内的电量分布和电场分布随粉尘层厚度变化的数学模型。

Guided by the theory of sequence stratigraphy, using the data of seismic, drill, well-logging and core, and adopting the multiplex geophysical techniques of well-logging and seismic composite analysis, 3D seismic interpretation, well-logging inversion, isochronism slicing and Stratimagic seismic facies analysis, this paper goes deep into studying some technical problems about the establishment of isochronal sequence stratigraphy framework, the prediction of sedimentary microfacies distribution and the prediction of the subtle reservoirs, and then preliminarily establishes a set of techniques about high resolution sequence stratigraphy research and subtle reservoir exploration, which is guided by the theory of modern sequence stratigraphy and armed with advanced geophysical interpretation techniques.

本文以层序地层学理论为指导，综合利用地震、钻井、测井和岩芯等资料，充分应用井-震综合分析技术、三维地震解释技术、井约束反演技术、等时地层切片技术和Stratimagic地震相分析技术等手段，深入研究了井-震等时层序划分、沉积微相展布及隐蔽油藏分布预测等技术难题，初步形成了一套以现代层序地层学理论为指导，以先进的地球物理解释技术为手段的高分辨率层序地层学研究和隐蔽油藏预测技术方法体系，并将该技术方法体系在四方坨子地区进行了试用，取得了明显成效。

ERK positive cell mainly distributed at nucleus of solitary tract, ambigous nucleus, and positive fibers and cells mainly distributed at medullary visceral zone, nucleus of solitary tract and ambigus nucleus. These positive cells formed an isolated zone from nucleus of solitary tract via medullary visceral zone to SP5, which could be seen using immunohistochemical stain. Positive cells and fibers also distributed at the projection from pneumogastric nerve to the stem.

免疫组织学染色可见，阳性细胞主要分布于延髓内脏带的孤束核和疑核、阳性纤维伴随阳性细胞分布于延髓内脏带的孤束核区和疑核、呈沿孤束核经延髓内脏带至三叉神经脊束核的弧行带；在迷走神经向脑干投射部位也可见阳性胞体和纤维的分布。

The study shows that the advantageous sandstones in the area have the following distribution characteristics: in the environment of growth faults, sandstones are mainly distributed in the downthrown block of a boundary fault; in a lowstand systems tract, sandstones are mainly distributed in lowstand wedges, slope fans, basin-floor fans, fan deltas, deltas and submarine canyons; in a transgressive systems tract, sandstones are mainly distributed in sandbars and sand-beaches; and in a highstand systems tract, sandstones are mainly distributed in deltas, fan deltas and submarine fans.

并指出有利砂体的分布特征：低水位体系域，砂体主要分布在低水位楔、斜坡扇和盆底扇；高水位体系域，主要分布在三角洲、扇三角洲、海底扇和峡谷水道。研究表明，以层序地层学理论为指导，划分层序和体系域，进而对有利砂体进行预测，对该地区油气勘探有重要指导意义。

Methods: Five patients with parkinsonism or dystonia were assigned to general anesthesia using an modified endotracheal tube.

本实验依照人体实验之相关规定进行，五位患有帕金森氏症或肌张力异常的病人接受神经立体定位手术。

If you can benefit from this book, it is our honour.

如果您能从本书获益，这将是我们的荣幸。