定向

Unidirectional solidification experiment on Zn-2%Cu peritectic alloy was carried out by Bridgman method. Lamellar structure was obtained at a solidification velocity between 1600μm/s and 6400μm/s.

摘 要：利用Bridgman法对Zn-2%Cu包晶合金进行了快速定向凝固实验研究，当生长速度在1600～6400μm/s时，得到了类似于共晶的层片状组织。

Finally, we phenomenologically separate phase according to magnetic fields, the results is consistent with our new idea where we use the Hamiltonian with curved surface to analyze XY model. In chapter Ⅳ, we make two hypotheses: the system has one-step time correlation and two-step time correlation. We find the effect of Ratchet potential is similar to OSTC which changes the system's relaxation. TSTC may facilitate the system to move forward or backward along the nonlinear wave of the thermal fluctuation.

第四章，我们进一步作了两个唯象的假设：体系有一步和两步时间关联；发现Ratchet势与一步时间关联有相似效果——改变了体系对热噪声的驰豫；而两步时间关联项则能够促使体系在热噪声的非线性波形上定向&冲浪&，或者促使体系躲避热噪声的扰动保持在势阱底部。

The selectivity of phenylacetaldehyde is increased when Br〓nsted acidity is getting stronger. The selectivity of benzaldehyde can be increased by increasing the amount of extraframework titanium species.

分子筛的B酸中心强度对产物分布有着显著的影响，B酸越强，苯乙醛的选择性越高，B酸位是催化环氧苯乙烷定向重排生成苯乙醛的催化活性中心；非骨架钛物种的增加有利于苯甲醛的生成。

Comparison from the Germany isolate, phocine distemper virus type Ⅱ(PDV-2) and vaccine strain, the major difference is the long signal peptide domain while the mature protein exhibit high identity, and all of the 13 serine residues, four potential asparagine glycosylation sites and two hydrophobic regions supposed to affect the fusion function are completely identical. These data supports the view that F protein is more conservative than H protein in CDV.

三、犬瘟热病毒中国分离株囊膜糖蛋白基因免疫小鼠诱发的抗体应答经一系列步骤将CDV-YZ0101株的两囊膜糖蛋白基因定向导入真核表达载体pcDNA3.1中，DNA测序和酶切分析筛选阳性重组质粒克隆pcDNA-H和pcDNA-F，以重组质粒DNA和脂质体共转染COS-7细胞，用间接免疫荧光试验证实转染的COS-7细胞的胞浆中分别表达了CDV的H和F蛋白。

In this paper ,move ment pri nci ple of rocket i n direction pi pe was got by dy— namic si mulation ,and effect characteristic consideri ng contact stiffness ,detent force and nozzle thrust misalignment a— bout pitchi ng angle velocity was analysis .All the study set foundationfor further study of high—lowpressure launch sys— te m.

通 过发射仿真分析，获得了火箭弹在高低压发射系统中的内弹道变化规律，分析了火箭弹与定向器的接触刚度、耳轴扭转刚度、尾喷管推力偏心等因素对俯仰角速度的影响特性，所得结论为火箭武器高低压发射系统的进一步相关研究奠定了基础。

Scanning tunneling microscope was used to investigate the in vitro assembly of R-phycoerythrin from the marine red alga Polysiphonia urceolata. The results showed that R-PE molecules assembled together by disc-to-disc while absorbing on HOPG surface, which just looked like the rods in the phycobilisomes.

将海洋红藻R 藻红蛋白吸附到刚揭开的高定向石墨表面上，然后用扫描隧道显微镜在纳米尺度上进行直接观察，发现纯化的R 藻红蛋白在体外自然聚集时，能够&面对面&的聚集在一起，形成非常规则的类似藻胆体的杆状结构。

The hemodynamics during induction anesthesia and maintenance anesthesia,and time for stopping administration of anesthetic until full spontaneous respiration,eye opening,trachcal extubation,orientation and discharging from the postanesthetic care unit were compared.

观察两组患者诱导和维持期血流动力学变化，术毕停药后自主呼吸恢复时间，呼之睁眼，拔管时间，定向力恢复时间和离开恢复室时间。

SP,DP,MAP and HR were calculated before and after CO2 insufflation. Time of automatic respiratory recovery, revival time, orientation, discharging from the postanesthetic care unit and operation time were observed.

分别于气腹前后记录收缩压、舒张压、平均动脉压、心率，记录术毕停药后患者自主呼吸恢复的时间、苏醒时间、定向力恢复时间、离开手术室时间及手术时间。

To study the effect of hTGF-β3 transfection into precartilaginous stem cells onproliferation and differentiation into cartilage chondrocytes.

探讨稳定表达重组TGF-β3对前软骨干细胞增殖及向成软骨方向定向分化的诱导作用。

Profilograph, fundamental roughness ruler and multirange roughness ruler have obvious advantages, which can be used as effective methods in the directive statistical research of JRC.

轮廓曲线仪、基本粗糙度尺和多量程粗糙度尺具明显的优越性，为JRC定向统计研究提供了有效的手段。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。