成层

In order to know the conditions of shallow tight sand gas reservoir formation,the gas-source rock was studied in Dongliang district in the Fuxin basin on the basis of organic petrological and geochemical study.

为了解阜新盆地浅层致密砂岩气成藏条件，应用有机岩石学和有机地球化学方法，对气源岩特征开展研究。

Methods 36 acute Pulmonary embolism patients were examined by technique that concentrateion of contrast medium controls the scanning of 16slice spiral CT.Among them,6 suspected of phlebothrombosis was given lower limb scanning in 170 seconds after thorax scanning.Volume data was transmitted to the work station and the reconstruction of multiplanar reformations,maximum intensity projection,volume rendering and virtual endoscopy.

采用16层螺旋CT触发扫描技术对36例急性肺栓塞患者行MSCTPA检查，其中6例可疑下肢静脉血栓患者在完成胸部扫描后延迟170 s行下肢扫描，容积数据传送至工作站后分别行多平面重建、最大密度投影、容积再现及仿真内窥镜成像。

Slice spiral CT.Among them,6 suspected of phlebothrombosis was given lower limb scanning in 170 seconds after thorax scanning.Volume data was transmitted to the work station and the reconstruction of multiplanar reformations,maximum intensity projection,volume rendering and virtual endoscopy.

采用16层螺旋CT触发扫描技术对36例急性肺栓塞患者行MSCTPA检查，其中6例可疑下肢静脉血栓患者在完成胸部扫描后延迟170 s行下肢扫描，容积数据传送至工作站后分别行多平面重建、最大密度投影、容积再现及仿真内窥镜成像。

In this paper, phytic acid was used as chemical conversion treatment solution, the performance and forming mechanism of the conversion layer would be discussed.

因此，本文围绕植酸化学转化成膜进行了研究，并对化学转化膜层和涂层的性能进行了探讨。

Rubbing: to rub two pearl,you can hear the sound of "sa sa" whenthe two real pearl scratching. Because true pearl it's made of thousands of pearl layers,so it's surface is coarse, not very smooth. But artificial pearl surface are pinked by dope. So it surface feel very smooth.

摩擦法--把两料珠子互相磨擦，人造珍珠因表层是涂料，故十分光滑；而南珠因其表层是一点一点的由珠贝分泌的珍珠质成百上千层地裹成的，实际上在显微镜下，珍珠表层是粗糙不平故有一种&涩&的感觉，有一种&沙沙&声。

The human cartilages are composed of chondrocyte and extracellular matrix , the form of chondrocytes are hypertrophy and the quantity are less; the ECM of cartilage are compised of type Ⅱ collagen and proteoglycan. Articular cartilages are all hyaline with little fibers. Trauma and arthritis are the main cause of cartilage injury, the ommilayer injury ofcartilage can be recovered by marrow, but because of without stimulation mechanism, the new tissues are merely fibrocartilages, they can not be coincide with hyaline cartilage in menchanics; the purely damage of articular cartilage can not stimulate chondrocyte to regenerate because of without blood circulation, thus, the plerosis of articular catilage can not depend on the proliferation of local chondrocyte. Ever since, people tried their best to find a way to reconstruct articular cartilage.

中文题名人骨髓基质干细胞成软骨诱导及多孔复合材料作为细胞载体的体外实验研究副题名外文题名 Cartilage induction of human mesenchymal stem cells and experiment on compound porous materials as cells' scaffold in vitro 论文作者刘晓岚导师周江南学科专业外科学研究领域\研究方向学位级别博士学位授予单位中南大学学位授予日期2003 论文页码总数68页关键词骨组织工程软骨细胞骨髓基质干细胞壳聚糖高分子外消旋聚乳酸馆藏号BSLW /2003 /R68 /10 造成人体关节软骨损伤的原因主要为创伤和关节炎，关节软骨全层损伤可由于骨髓中间充质干细胞的高速增殖修复，但这种修复由于缺乏相应的刺激机制，只能形成纤维软骨，而不能形成符合关节生理、力学要求的透明软骨；单纯软骨部分损伤软骨组织内无血管，软骨细胞迁移迟缓，无法使损伤区域软骨细胞再生，因此，关节炎及关节创伤后的软骨修复不能依赖于软骨细胞的增殖和迁移。

Cyclization: cyclization occurs at 100℃in polyphosphoric acid for 4h in the mass ratio of 3-(4-methoxyanilino) propionic acid to PPA with 1:8, and 6-methoxy-2,3-dihydro-4-quinolone is formed in 50.5% yield with a method of rapid chromatographic column, c.

成环反应：质量比[3-(4-甲氧苯氨基)丙酸∶多聚磷酸]=1∶8，反应温度为100℃，反应时间4h，柱层析纯化后6-甲氧基-2，3-二氢-4-喹啉酮的收率为50.5％；c。

objective: to investigate the effect of resectability by multislice spiral computer tomography and multiplanar reconstruction to the patients with protopathic cholangiocarcinoma.

目的：探讨多层螺旋ct、多层面重建技术、磁共振胆胰管成像、超声在原发性胆管癌患者术前可切除性评价的可信度。

In our laboratory a chemically regulatable male sterile expression system had been constructed based on the antisense actin strategy and putatively transgenic tobacco plants with Kan-resistance had been obtained.

本实验室在自行研究成功的反义肌动蛋白雄性不育策略的基础上，构建成由铜调控的在绒毡层细胞特异表达anti-actin基因的植物表达系统，转化烟草获得由kan抗性筛选的烟草植株。

Optical coherence tomography scattering model and Kubelka-Munk theory are combined to analyze the changes of optical parameter quantitively in different aging skin in this paper.

结合光学相干层析成像与Kubelka-Munk理论定量分析不同年龄皮肤的光学参数的变化情况。

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