成层

The contrast material was bolus injected through antecubital vein ,while four layers of dynamic scans were performed for 50 seconds.

摘要］ 目的：探讨多层螺旋CT灌注成像结合去卷积算法在成人脑血流动力学中的应用。

According to comprehensive analysis, the reservoir is now in the middle diagenetic phase A to B.

综合分析认为延长组储层成岩阶段主要处于中成岩A-B期。

On basis of diagenetic temperature research, combining with burial history and geothermal evolution, the author has found out the time when major diagenesis influence reservoir quality happened.

作者在成岩温度研究的基础上，结合埋藏史和地温史，基本弄清了影响储层物性的各主要成岩事件的作用时间。

We divide the evolution of becoming rocks into four periods: early region's metamorphic process and mixed lithifaction,sedimentation and becoming rocks process in middle and late Proterozonic Era and in the Paleozonic Era,trasformation process of burial hill layers in earth shell'uplift period in the Mesozonic Era, and transformation process to burial hill in the Cenozonic Era.

将储层的成岩演化划分为四个阶段：即早期区域变质作用和混合岩化作用、中晚元古代和古生代沉积成岩作用、中生代地壳抬升阶段潜山地层的改造作用和新生代断裂对潜山的改造作用。

The expression of CD44 was strong positive in stratum intermedium at the bell of differetiational stage, bell of secretory stage, and bell of maturative stage of mouse tooth germ.

在钟状期CD44在口腔上皮、牙板上皮强阳性表达；外釉上皮、星网状层、成牙本质细胞弱阳性表达；分泌期的成釉细胞和牙囊阳性表达。

This is one kind by the neutral distilled water the bamboo coal factor which for the carrier, auxiliary purifies and essential becomes the membrane assistant, to seal the solid anti-alkali member contour molecular compound naturally to undergo a series of complex craft purification to become, this green environmental protection, can form compact protective film fast on the wall surface, has the stable wall surface, waterproof, the anti-alkali function, can prevent the wallpaper mildewy deterioration effectively, the enhancement wallpaper and the wall coheres the strength, is advantageous in the wallpaper construction, the extension wallpaper service life.

本品是一种以中性蒸馏水为载体、辅以精制的竹炭因子和必要的天然成膜助剂、封固抗碱分子等高分子化合物经过一系列复杂的工艺精制而成，本品绿色环保，能快速在墙面上形成一层致密的保护膜，具有稳定墙面，防水、抗碱的作用，能有效防止壁纸发霉变质，增强壁纸与墙体黏结力，有利于壁纸施工，延长壁纸的使用年限。

Based on the time-space structure of source rock, reservoir rock and cap rock in petroleum system of Neopaleozoic in south of North China Basin, play and pool-forming unit of Neopaleozoic was divided. The matching relation between trap formation period and peak period of source rock hydrocarbon generation and expulsion was analyzed, which pointed out the future direction of hydrocarbon targets exploration in this area.

根据华北盆地南部上古生界含油气系统中烃源岩、储集岩和盖层的时空结构，进行了上古生界成藏组合和基本成藏单元的划分研究；通过对圈闭形成期与烃源岩生排烃高峰期匹配关系的分析研究，指明了今后该区油气勘探目标的选择方向。

The basin experienced three basin-forming cycles of Neopaleozoic, Mesozoic and Cenozoic Eras. Mesozoic fault and depression compounding basin composed the northern margin Jurassic petroleum system and the Cenozoic large-scale strike-slip and compressional basins composed the Tertiary petroleum system of the western Qaidam basin and Quaternary petroleum system of Sanhu. The intense tectogenesis of Yanshan and Xishan made the Jurassic petroleum system of the northern Qaidam more complex. The monocycle paleoclimate evolution in Cenozoic Era and multi-tectonic movement made the lake-basin evolution, hydrocarbon source-rock, reservoir development, accumulation condition and petroleum distribution are more exceptive in character and complex in feature.

该盆地经历了晚古生代、中生代和新生代3个成盆旋回，中生代断坳复合盆地形成了柴达木盆地北缘侏罗系油气系统，新生代大型走滑挤压盆地形成了柴达木盆地西部第三系油气系统和三湖第四系天然气系统，燕山和喜山2期强烈构造运动使柴北缘侏罗系油气系统高度复杂化，新生代单旋回古气候演化与多期构造运动使湖盆演化、烃源岩和沉积储层发育特征、成藏条件与油气分布规律变得十分特殊和复杂。

Notch1 is expressed by stem cells resided in the cervical loop epithelium, and Notch signaling pathway play a central role in fate decision of those stem cells. Notch receptors and their ligands are involved in both patterning and cell fate determination during odontogenesis. Moreover, many cell factors, which are closely related with odontogenesis, could regulate expression of Notch receptors or their ligands.

既往研究显示：早在牙齿发育期，Notch1就表达于颈环星网状层的干细胞中，是其保持干细胞性质的重要机制；Notch-Delta信号还与成釉细胞、成牙本质细胞分化有关，被认为是牙齿发育细胞分化多样性的原因之一；另外，目前已明确与牙胚细胞分化有关的生长因子如TGFβ、FGF、BMPs等均可诱导Notch受、配体的表达。

Two sets of oil-bearing series,the upper E_2s_4 and E_2s_3 of Palaeogene in Boxing subsag,were studied by adopting organic geochemistry,high-resolution sequence stratigraphy and pool-forming dynamics.

应用有机地球化学、高分辨率层序地层学和成藏动力学等研究方法，对博兴洼陷古近系沙四上亚段和沙三段两套烃源岩的油气成藏的差异性进行了研究。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失