板层

The nacre of molluscan shell, which is composed of inorganic aragonite tablets and a few percent of organic polymers filling between the tablets, is a wonderful natural composite material. It shows complex forms, and fascinating mechanical and optical properties.

软体动物的贝壳珍珠质是由文石板片(CaCO_3晶体)以及少量填充在板片之间的有机质组成的一种天然的复合材料，具有复杂的形貌以及良好的力学性能、光学性能，其文石板片与有机基质交替叠层排列的微结构以及文石晶体的结晶学取向是珍珠层具有优异的力学性能的重要原因之一。

Army Natick Soldier Center to develop material for body armor, providing a laminate layer on the strike plate and back face to augment current materials.

Army Natick Soldier Center）携手合作，共同研发制造防弹衣的原材料，为防弹衣的防冲击板及后面提供层压层，使现有材料的性能有了很大的提高。

METHODS: According to adherent + Thy1.1 antibody and complement-purification method, cranium was opened to expose olfactory bulb. Thereafter, two olfactory bulbs were obtained to remove cerebral pia mater, blood capillary, and peripheral tissues; additionally, olfactory nerve layer and olfactory bulb granular layer were sheared into 1-mm3 pieces for extract single-cell suspension. The cells were adjusted at the density of 1×107 /L and incubated with poly-l-lysine-coated culture bottle or culture plate in 5% CO2 incubator at 37 ℃. On the third day, cells were cultured with serum-free DMEM/F12 culture media.

在差速贴壁+Thy1.1抗体及补体纯化法的基础上，剪开大鼠颅骨，显露位于颅腔前方的嗅球，取出2只嗅球，在显微镜下去除嗅球表面的软脑膜和毛细血管及外周组织，保留富含嗅鞘细胞的嗅神经层和嗅球颗粒层，剪成1 mm3小块分离获取单细胞悬浮液，调整细胞密度至1×107 L-1，接种在用poly-l-lysine包被的培养瓶或培养板中，于37 ℃、体积分数为5%的CO2培养箱中培养，第3天用无血清DMEM/F12培养基换液培养。

The results indicate that, the inte r face of laminated composites plays a significant role in fatigue crack growth. T he fatigue crack propagation is arrested by the interface delamination in the ex plosive bonded LY12 laminate.

结果表明，层合板中的层间界面性能对其疲劳性能具有重要影响，在LY1 2 爆炸复合板中，垂直板面L-S取向和L-T取向的疲劳裂纹在扩展过程中都发生了明显的止裂。

The superficial blood vessels could cross two or more pulmonary lobules, and the pleural superficial blood vessels and the interlobular blood vessels were mutual transitional. The outlines of lobules composed of vascular networks were various in size and form, and the lobular septa were also different in depth. The subpleural arterioles could be divided into arteriole, terminal arteriole, precapillary arteriole and capillary in turn according to the branching sequence of themselves. The plate-like, sieve-like and web-like vascular networks occurred in the subpleural microvascular networks.

胸膜面浅层的血管可以跨越两个或多个肺小叶表面，浅层的血管可与小叶间隔的微血管之间相互移行；由微血管网形成的肺小叶的轮廓大小不等、形态各异，小叶间隔的深度也有所不同；胸膜下微动脉可根据逐级分支的顺序将其分为微动脉、终末微动脉、毛细血管前微动脉和毛细血管；胸膜下毛细血管网中可见板块状、筛网状和网络状血管网。

Three optimal structures were gotten in this paper by the model of elastic modulus along the grain, elastic modulus in tangential direction, in-plane shearing modulus and laminate rigid:①0/90/0/90/0/90/0/90/0, the outside four veneer is modified, the along grain MOE and MOR are 8377MPa, 60.9MPa respectively; The across grain MOR is 35.1 MPa, and TS is 17.2%.

4通过应用杨木单板顺纹弹性模量、横纹弹性模量、面内剪切模量及层合板刚度模型进行杉木胶合板结构设计，经多次修正，得出较好结构有以下几组：①0/90/0/90/0/90/0/90/0，最外四层为杉木改性单板，顺纹弹性模量和静曲强度分别达到了8377MPa，60.9MPa；横纹静曲强度为35.1 MPa，吸水厚度膨胀率为17.2%。

That indicates the ply angle almost has no effect on the shear strength of splice laminates.

这也说明拼接层角度的变化几乎不影响层合板的剪切强度。

Research of white-light stroboscopic speckle interferometry ;2. In this paper, the experiments for two kinds of glass fiber epoxy laminates is carried out by using speckle interferometry .

采用散斑干涉法，对两种铺层方式的环氧基玻璃纤维层合板的弹性模量、泊松比和应力－应变曲线进行了实验研究。

Trigonometric and Legendre series are applied to construct the displacement models of each composite ply and glue layer in above loading state.

主要工作包括以下几个方面的内容：一、提出了复合材料层合梁和层合板应力分析的一般理论。

After amputation, the expression of desmin appears first in the distal end epidermis and the peritoneum 4 d PA. The expression in the peritoneum lasts to the 14 d PA when expression of desmin appears in the musculature, while that in the distal end epidermis only lasts to the 8 d PA when the connective tissue below begins to express desmin. Moreover, from the 4 d PA, musculature and epidermis of the tube foot begin to express desmin and the expressions last to the 20 d PA. From 8-14 d PA, musculature of the ambulacral plate expresses myogenin and the peritoneum also expresses myogenin from 14-20 d PA. All these results indicate that precursor cells for muscle regeneration in adult starfish A.rollestoni are mainly from the distal end epidermis and the parietal peritoneum.

创伤后第4 d，顶端表皮层及体腔上皮中首先出现了desmin表达，体腔上皮中desmin的表达一直持续到第14 d，此时其上方的肌肉组织中也出现了desmin表达；而顶端表皮层中desmin的表达仅持续到第8 d，同时其下方的结缔组织也开始表达desmin；此外，从第4 d起，管足肌肉及管足表皮层开始表达myogenin，且该表达一直持续到创伤后的第20 d；而第8 d起，步带板肌肉也出现了myogenin的表达，此表达一直持续到第14 d；从第14 d起，体腔上皮也出现myogenin表达，且一直持续到第20 d。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。