定向形成

Recent data suggested that Notch receptors and their membrane-bound ligands Delta and Serrate were involved in both patterning and cell fate determination during odontogenesis.

越来越多的证据表明：Notch途径参与了牙齿发育的各个过程，包括牙齿早期发育细胞的增殖、分化过程，决定细胞的定向分化方向，决定成牙本质细胞与成釉细胞的终末分化命运，并且参与牙齿炎症损伤后修复过程，与第三期牙本质的形成有关。

Formation Mechanism of Band Structure and Phase Selection During Directional Solidification of Peritectic Alloys II.

定向凝固包晶合金带状组织的形成机制及相选择 II。

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。

Signalling through CXCR4 mediates actin polymerization and pseudopodia formation in cells, and induces chemotactic and migration to target organs. In addition, CXCR4-SDF-1 axis can promote tumor angiogenesis and growth.

CXCR4在肿瘤组织中的表达明显高于正常组织，而肿瘤常见转移部位均为CXCR4的配体基质细胞衍生因子-1(stromal cell derived factor-1，SDF-1)表达丰富的器官，SDF-1与CXCR4结合后可使细胞肌动蛋白丝聚合，形成伪足，从而定向诱导肿瘤细胞迁移到特定的靶器官；此外，CXCR4与其配体SDF-1相互作用可以促进局部新生血管作用，利于肿瘤生长。

The enzyme activity was determined according to the velocity of the formation of halos on the plates.

建立了双层平板筛选由定向进化方法产生的瑞氏木霉内切葡聚糖酶Ⅲ突变体文库的方法，根据水解圈在平板上形成的速度判断酶活高低。

Seeing as they had already decided that my sex-uality was my self, I then decided to seek solace with fellow perverts.

看到他们已经形成了一个定向的思维觉得我的性取向是不正常的，于是我决定在我的同性恋伙伴们寻求安慰。

We suggest that the CPO of amphibole in retrograded eclogites is probably formed by rigid body rotation and dissolution-precipitation creep of elongate amphibole grains in a less viscous matrix of symplectite.

结合光学显微特征观察，本文认为退变质榴辉岩中的角闪石 CPO 主要受其显著的长柱状和针状结晶习性控制，其形成机制为差异应力条件下的溶解－沉淀定向生长，可能伴随有早期的角闪石微晶的刚性旋转变形。

This paper examines why private placements of equity are associated with substantial discounts in china.

本文研究了定向增发的高额折价及其形成原因。

The sedimentary process of debris flow which has fundamental dynamic mechanism of flowing and creeping formed mainly various flowing structures, such as half-ring flowline structure, divided-flowing structure, bag-shaped flowline structure, divided-flowing structure, bag-shaped flowine structure, loaded structure, multiple-layered structure, washed gravel bed and lenssoiled-bed structure.

以流动和蠕动为基本动力机制的泥石流堆积过程多形成各种定向的流动构造，例如，半环状流线构造，分流构造，袋状流线构造、载荷构造、多层状构造、冲刷砾石层和透镜状土层构造。

The research in hot cracking reguarity of directionally solidified Rene125 alloys proved again the theory about solidification contraction and its compensation.

对涡轮叶片材料Rene 125合金定向凝固热裂规律性的研究再一次验证了热裂纹形成的凝固收缩补偿理论。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。