上管

The method will involve a sequence of ammonification of glass surface, functionalization of carbon nanotube surface, and bonding between the nanotubes.

将奈米碳管与其它材料以一定的比例复合而制备，进而形成一种具有奈米碳管之复合吸附材料所组成之固相萃取柱介质，其合成步骤包括：奈米碳管表面改质官能化，玻璃粒体之载体氨化及最后将两者经缩合剂作用而产生化学键结使奈米碳管批覆在玻璃粒体之载体上。

Foreign atoms were placed over the sheet at several symmetrical positions, namely, over a carbon atom, over a C-C bond, over the center of a pentagonal, hexagonal, and heptagonal ring. The following conclusions have been drawn: The cohesive energy of adsorbate and perfect sheet at all three adsorption sites is always lower than that on a sheet with a Stone-Wales defect embedded at all five sites.

得到的主要结论如下：所有外来原子在含有Stone-Wales缺陷的石墨烯片上不同位置上吸附的结合能都大于在其在完整石墨烯片上不同位置上的结合能，因此在碳管中引入Stone-Wales缺陷能够提高原子在碳管上的吸附能力，同时提供了很多稳定的吸附位置。

Results The expression of the Mahoganoid protein and its mRNA was showed by brown staining and observed in the Leydig cells, spermatogonia, primary spermatocytes, spermatids, Sertoli cells, and peritubular myoid cells of testicular tissues and principal cells, basic cells and epithelial cells of epididymal tissues.

结果1。免疫组化法检测Mahoganoid蛋白的实验结果显示的棕色阳性信号可见于各天龄段大鼠睾丸的生精细胞、支持细胞、间质细胞和管周肌样细胞以及附睾输出管的高柱状、低柱状上皮细胞和附睾管的上皮细胞、主细胞、基细胞。其中Mahoganoid蛋白主要表达于胞膜和胞浆。

Pathohistologic examination revealed normal glomeruli but vacuolar degeneration of tubular epithelial cells, and part of them disrupted and desquamated, and also tubular dilatation. Only mild pathological changes were seen in the intervention groups.

肾脏病理检查可见LPS组肾小球大致正常，而肾小管上皮细胞空泡变性，部分上皮细胞崩解、脱落，管腔扩张，两个UT干预组肾小管病理变化均较LPS组减轻，不同剂量组间形态差异无显著性。

Changes in brain tissue similar to those of newborn in HIE were detected after 2 hours of hypoxia and ischemia.Meanwhile,swelling of kidneys,hemorrhage below encapsules,swellin of tubular epithelial cells,necrosing and falling of a few tubular epithelial cells,and narrowing of tubular lumens were observed.The basement membranes of renal tubules remained normal ...

结果发现新生猪经2小时缺氧缺血后，在脑组织出现类似新生儿HIE病理损害的同时，肾脏出现肿胀，包膜下出血，肾小管上皮细胞肿胀，管腔变窄，少数上皮细胞坏死脱落，肾小管基膜完整，血清尿素氮及肌酐明显升高（P＜0.025及P＜0.05），表明在HIE状态下新生猪已出现肾脏的病理及功能损害，但损害程度较轻，解除缺氧72小时后，上述损害基本恢复正常。

A process for continuously preparing nm carbon tubes on fluidized bed include such steps as carrying the transition metal oxide catalyst on carrier, putting it in catalyst-activating reactor, reduction reaction by introducing the gas mixture of nitrogen gas and hydrogen or CO gas to the reactor, loading the catalyst into fluidized bed, and introducing mixed reaction gas to its to grow said nm carbon tubes on the catalyst by chemical gas-phase deposition.

本发明涉及一种流化床连续化制备碳纳米管的方法，首先将过渡金属的氧化物催化剂载于担体上，然后将其放在催化剂活化反应器内，通入流动的氢气或一氧化碳与氮气的混合气体进行还原反应，最后将催化剂送至流化床中，通入反应混合气体，流化床的下部则得到碳纳米管。本发明的方法和装置，在流化床中经过化学气相沉积，在催化剂载体上生长出碳纳米管。

A connector for a plain end pipe comprising a housing (7) for location over the pipe, an annular recess (4) formed in an inner surface of the housing (7), a seal (1) located in the recess (4), a nipple (8) for the supply of grease under pressure, and segmental grippers of L-shaped cross section comprising a leg (6) and a foot (5) having a serrated inner surface for engagement with the pipe.

一种用于平端头管的管接头，包括一个放在管子上的外壳（7），一个在外壳（7）的内表面上制出的环绕管子的环形槽（4），一个位于槽（4）内的密封件（1），一个在压力下供应油脂的入口（8），和L形断面的分段式管夹，它包括一个腿（6）和一个具有与管子接合的锯齿形内表面的脚（5）。

Gas column (2) gaseous oil column (3) gaseous liquid column from pump to the tube end (4) gaseous column from tube end to the formation According to the flow pattern, this paper utilize the methods given by those papers .

从管柱结构上，将井筒划分为四个部分：(1)气柱段(2)沉没度(3)泵口至管鞋段(4)管鞋至油层中部在流态分布上，管鞋以上，尊重人前人的算法。

Based on the analysis, made qualitative calculation of the various curvatures of the straightening process applying elastoplastic bending theory. The method of determining curvature of the inverted bending curvature of the axis of being straightened pipe is put forward with which straightening quality is guaranteed in the first place and solved the key problem that have not been solved for a long time. All of these provided theorial basis for the design of bending pipe straightening roller. and setting down of adjusting rule.

在此基础上，运用弹塑性弯曲矫正理论对管材矫正过程中的多次弹塑性弯曲矫正的各曲率进行了定量计算，在保证矫正质量的基础上，对管轴反弯曲线曲率的确定进行了研究，解决了弯管辊形设计中久未解决的最为关键的问题，为弯管辊形矫正辊的合理设计和矫正规程的制定提供了理论基础。

Nickel-Titanium instruments have become widely used in the endodontic treatment. However, their unexpected separation was a serious concern in endodontics. To date, no scientific methods have been developed to evaluate the functional lifespan of Ni-Ti instruments. In this study, we used resonance frequency analysis to nondestructively detect the fatigue life of Ni-Ti instruments to determine the feasibility of this technique for use in the clinic.

镍钛合金根管锉已经广泛的使用在牙髓病的治疗上，但其无预警的断裂也是令牙医师关心的问题，之前并无一科学性的方法来评估镍钛合金根管锉的寿命，而本研究室利用自然频率的分析方式对镍钛合金根管锉做非破坏性的疲劳检测，确定此方式可行且在临床上有应用的价值。

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。