扫描

The crystal structure, phase transition, cross-section morphology and thermal expansion coefficient of the samples were investigated by X-ray diffraction, thermogravimetric and differential scanning calorimetry, scanning electron microscope and dilatometry respectively.

通过X射线衍射仪、热重-差示扫描量热、扫描电子显微镜、热膨胀仪等分析手段对样品的晶体结构、物相转变、断面微观形貌和热膨胀性能进行表征。

The dispersity and crystallization properties of composites were studied by SEM and DSC.

采用场发射环境扫描电子显微镜和差示扫描量热仪研究了复合材料的分散性和结晶性能。

ANSYS is a finite element simulation software used to simulate the temperature field in selective laser sintering.By using the ANSYS parameter design language,the density of the thermal flow,the velocity and the path of scanning can be controlled.The effect of the scanning path on the temperature field in the SLS process is studied. Balling,which occurs at the end of the scanning line,is caused by the dissymmetric temperature field and the great temperature gradient.

利用有限元分析软件AN SY S，对激光烧结温度场进行了数值模拟，建立了激光烧结薄板的温度模型；运用APDL语言控制热源的热流密度、移动速度以及扫描轨迹；研究了激光行程对烧结温度场的影响，扫描端点温度场的不对称及较大的温度梯度造成了端点球化现象；激光扫描线间的耦合作用使端点球化现象随扫描线的增加而逐渐显著。

Methods 43 cases of lumbar stenosis undergone domelike decompression were performed L(subscript 3~4) and L(subscript 4~5) CT scanning pre-and postoperatively.

对弯顶形椎管扩大成形术治疗的43例腰椎管狭窄症患者手术前后进行CT扫描，用Image-Pro软件对CT扫描片进行椎管L(下标 3~4)、L(下标 4~5)的椎管矢径、上关节突内缘间距、椎板间距、截面积测量分析。

Abstract］ Objective To evaluate the value of spiral CT dynamic contrast-enhancement scanning on pulmonary embolism by analysing the CT appearance of pulmonary embolism restrospectively.Methods Collect and analyze the appearance in multi-slice spiral CT of 24 patients with pulmonary embolism,especially the embolismic index,the involved proportion of central pulmonary arteries,the presenting proportion of bronchodilation and pulmonary infarction.

目的 回顾性分析肺动脉栓塞的CT表现，探讨层螺旋CT动态增强扫描对肺动脉栓塞的诊断价值方法搜集经多层螺旋CT动态增强扫描确诊的肺动脉栓塞24例，回顾性分析其CT表现，重点分析肺动脉栓塞指、中央肺动脉受累比例、有无支气管扩张显示、是否合并肺梗死。

Results:Among the 38 cases,the affected sites were the femur (n=21),tibia (n=5),humerus (n=3) and other bones (n=9).37 cases had central calcified nidus,33 cases had sclerotic margin,13 had periosteal or endosteal bone formation.

材料与方法本组 38例中男 31例，女 7例，年龄 3～ 4 1岁，平均19 。4岁，其中 35例年龄在 2 5岁以下；所有病例采用2 。5～ 5 。0mm层厚/层间距的CT扫描，其中 10例采用3mm层厚/层间距扫描、1mm重建。

All patients except one with clinical and radiologic findings suggestive of acute intestinal obstruction underwent single detector row CT of the abdomen and pelvis at the time of admission. One patient underwent CT 4 days after conservative treatment. Four patients with low-grade obstruction underwent enteroclysis, which is particularly helpful in depicting and grading the severity of partial obstruction and demonstrating sites of incomplete obstruction.

除1例病人外所有其他临床和影像学表现怀疑急性肠梗阻的病人在住院时均进行了腹部和盆腔的单排CT扫描，一例病人在经过保守治疗4天后进行了CT扫描；4例轻度梗阻的病人进行了肠道造影，这非常有助于对部分性肠梗阻进行描述和程度分级并显示不完全梗阻的位置。

Results: The positive rate of angiography, radionuclide scanning, double intestinal air-barium contrast examination, enteroscope, exploratory laparotomy and intraoperative colonoscopy...

小肠出血的诊断首选选择性肠系膜动脉造影；再行核素扫描，尤其是少量小肠出血对核素扫描较敏感；小肠气钡双重造影对小肠微小的隆起和凹陷性病变诊断价值较高；小肠镜的技术有待进一步提高；剖腹探查用于上述辅助检查均未能明确，且排除了上消化道和大肠病变而又有大量出血和反复出血者。应将小肠认为是中消化道而大肠是下消化道。

In the present study changes of NOS positive cells after injection of LPS and apoptotic ependymal cells, the relationship between expression of immediate early gene c-fos and astrocytes, and comparison of changes between SFO and rest regions of the brain in different time-points were investigated with NADPH-d histochemistry, apoptosis in SITU detection of TUNEL, TEM and SEM, fluorescein double labeling of immunohistochemistry, and laser scanning confocal microscope .

为了证实穹窿下器在脑内免疫调节系统中的作用，在本研究当中，应用了NADPH-d的组化方法、TUNEL末端标记法、扫描及透射电镜方法、免疫组织化学的荧光双标法及激光扫描共聚焦显微镜技术，来研究在腹腔内给予大肠杆菌内毒素后，脑内的一氧化氮合酶细胞的变化、室管膜细胞的凋亡、早期即刻基因c-fos的表达与星形胶质细胞之间的关系，以及穹窿下器与其它脑区相比较时的特异性改变。

In the present study changes of NOS positive cells after injection of LPS and apoptotic ependymal cells, the relationship between expression of immediate early gene c-fos and astrocytes, and comparison of changes between SFO and rest regions of the brain in different time-points were investigated with NADPH-d histochemistry, apoptosis in SITU detection of TUNEL, TEM and SEM, fluorescein double labeling of immunohistochemistry, and laser scanning confocal microscope.

为了证实穹窿下器在脑内免疫调节系统中的作用，在本研究当中，应用了NADPH刁的组化方法、TUNEL末端标记法、扫描及透射电镜方法、免疫组织化学的荧光双标法及激光扫描共聚焦显微镜技术，来研究在腹腔内给予大肠杆菌内毒素后，脑内的一氧化氮合酶细胞的变化、室管膜细胞的凋亡、早期即刻基因（immediate early genes沁－fos的表达与星形胶质细胞之间的关系，以及穹窿下器与其它脑区相比较时的特异性改变。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。