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Based on the variable separation method, the governing equations for the film thickness problem have been solved. A reasonable consistent condition of the momentum equations has been found and solved. Based on the methods ofmathematical physics, series expansion solution of the velocity filed in the film has been derived. A boundary condition at the boundary of the spray area was given and the velocity slip phenomenon has been considered.

基于电子器件喷雾冷却技术的研究现状和研究热点,本文对喷雾在热源表面形成的冲击液膜流动及厚度模型、基于CHF(Critical Heat Flux,临界热流密度)准则的倾斜喷射喷嘴轨迹、喷嘴距热源换热最优时的高度、倾斜喷射实验以及针对动态喷射的电磁驱动器件的吸合问题等方面进行了研究:针对圆锥形轴对称喷雾冷却系统,在对喷雾区域进行划分的基础上,引入滑流边界条件,在提出圆锥状喷雾假设的基础上,建立了喷雾区域雾滴密度连续介质等效模型。

We prepared the ordered porous alumina membrane by a two-step anodization method in oxalic or sulfuric acids, which is a self-ordered hexagonal array of cells with an adjustable pore diameter of 20-150nm and a different pore structures (i.e. Y-branched, dendriform, toothed and torous ones). Furthermore, the template-electrodeposition, vapor-catalytic growth, and controlled chemical etching were developed for well-aligned carbon nanotubes and oxide nanopillars with adjustable diameter, Al2O3-AlN one-dimensional heterojunction, Y-junction and dendriform metal nanowires, as well as Y-junction, and torous carbon nanotubes. The resultant one-dimensional junctions were characterized by XRD, SEM, TEM,HRTEM, and STM, and the field emission of the well-aligned carbon nanotubes and the luminescence of ZnO nanopillar array have also been mearsured.

完善和发展了阳极腐蚀法制备多孔氧化铝膜的方法,制备出了孔径在20-150nm之间可调和具有不同孔结构(如Y形、树枝状、锯齿状)的系列多孔氧化铝模板,在此基础上,利用电化学沉积、气相催化生长和化学控制腐蚀等方法,成功地生长出具有可调直径的碳纳米管和氧化物纳米柱有序阵列、Al2O3-AlN异质结纳米线、Y形和树枝状的金属纳米线以及Y形、藕节形和锯齿形的碳纳米管等多种一维结纳米材料及其阵列体系,探索了基于模板孔壁内沿生长一维结纳米材料的机制,较系统的研究了碳纳米管阵列的场发射性能和氧化锌纳米柱的发光性能,为低维纳米材料器件化提供了实验基础。

Corona present at base of perianth in one to several series of showy filaments; innermost series membranous, partially to entirely fused, margin entire or fimbriate, often incurved over nectar chamber; extra-staminal nectariferous disk present around base of androgynophore, fused to base of hypanthium.

副花冠宿存在基部为一到数轮艳丽的花丝;最内部轮膜质,部分完全愈合,边缘全缘或流苏状,在花蜜的寝室上方通常弯曲的;在雌雄蕊柄的基部周围的特别雄蕊的分泌蜜汁的花盘宿存,对托杯的基部愈合。

Spikelets protogynous, strongly laterally compressed, floret 1, falling entire from pedicel; rachilla extension absent; glumes equal,± equaling and enclosing floret, broadly lanceolate to oblong, membranous to thinly leathery, prominently 3-veined, strongly keeled, keel usually ciliate, infrequently winged, lower margins almost free or connate for up to half their length, apex obtuse, acute or shortly awned; lemma broadly lanceolate to ovate, usually thinly membranous, keeled, obscurely 5-veined, smooth, glabrous, lower margins often connate, awned from lower back, apex truncate to acute; awn straight when short or geniculate when longer, column smooth, usually twisted at maturity, bristle scabrid; palea absent or very small.

雌蕊先熟的小穗,强烈侧面压扁,小花1,从花梗那里变为全缘;小穗轴扩展缺席;颖片等长,多少等长和包围小花,宽披针形的到长圆形,膜质到薄革质,显著3脉,强烈龙骨状,外稃宽披针形的到卵形,直的芒什么时候短或者膝曲长时间,顺利的柱子,通常成熟时扭曲,粗糙的硬毛;内稃缺席或者很小。

In Wistar rats, latent period of a-wave in scotopic rod response after 1-week transplantation was shorten (P.05); and latent period of a-wave in scotopic rod response after 2-week transplantation was prolonged (P.05); while latent period of b-wave in scotopic maximum response after 1-week transplantation was shorten (P.05). In RCS rats, amplitude of a-wave in scotopic rod response and photopic response after 4-week transplantation was increased (PO.05); while latent period of a-wave in scotopic rod response after 4-week transplantation was shorten (PO.05).Conclusion 1. At the age of 3 months, photoreceptors of the RCS rat degenerated completely, which leaded to the reduction of amplitudes of a-wave and b-wave.

Wstar大鼠术后1周的暗适应视杆反应,a波潜伏期缩短o叼。05);术后2周的暗适应视杆反应,a波潜伏期延长o功刀5):术后1周的暗适应最大反应,b波潜伏期缩短o功刀5卜*CS大鼠术后4周的暗适应视杆反应和明适应反应,a波振幅增大o功刀匀;术后4周的暗适应视杆反应,a波潜伏期缩短o<0卜结论1、RCS大鼠在3月龄时感光细胞变性死亡,导致FERG的a、b波振幅明显降低;视网膜下腔仍存在感光细胞外节盘膜碎屑,外丛状层缺乏感光细胞的突触末端,同时Muler细胞出现反应性胶质纤维增生。

The basolateral M cell surface is invaginated to form an intracellular central pocket into and out of which lymphocytes and macrophages.

M细胞是一种特化的上皮细胞,多分布于Peyer's结圆顶区的周边,FAE的顶端未见M细胞;其结构有别于相邻的肠上皮细胞,表面没有长而整齐的微绒毛,取而代之的是粗而短的微皱褶,胞质内终末网不发达,溶酶体较少,基底膜向顶部穹隆状突起,形成一&口袋&样结构,其中含有多个免疫活性细胞。

Recent studies showed that Rho GTPase played a key role in the reorganization of cytoskeleton and in Swiss 3T3 cells, Cdc42, Rac1 and RhoA, three members of Rho superfamily of small GTPase, regulated the polymerization of actin to produce filopodia , lamellipodia, stress fiber and focal adhension, respectively.

近年来的研究表明,Rho家族小G蛋白是细胞骨架肌动蛋白的重要调节因子,目前众多的研究集中在Rho小G蛋白家族成员中的Cdc42、Rac1和RhoA,其中Cdc42促进丝状伪足的形成,Rac1调节板装伪足的生成和膜皱缩,RhoA则促进粘着斑连接和张力纤维的装配。

The working principle: 1, with the membrane machine, Slitter linkage: in the production process, from bits and pieces of the film strip was placed in the feed granulating machine body, the binder device, irregular bits and pieces have been pressure neatly into the pattern with the ribbon, and then by the high-speed rotary cutting blade alloy materials for the flaky particles, instantaneous complete recovery.

工作原理:1、与制膜机、分切机联动:在生产过程中,排出的带状薄膜边角料立即被送入造粒机的进料机构,经压料装置,不规则的边角料被压成整齐带花纹的带状,再由高速旋转合金刀片裁切为片状颗粒材料,回收瞬间完成。2、单独使用:将分切下的边料有序的卷到纸芯上,成卷地送到造粒机进行造粒。

By low temperature (145K) deposition method, we prepared such flat Pb films on the Si (111) substrate over a wide thickness range (from 10ML to 32ML). The unique growth behaviors were investigated by RHEED, STM and ARPES. A critical thickness of 10ML is established, at which the atomically flat Pb films become stable at room temperature. Between 10ML and 20ML, the growth exhibits a quasi bi-layer growth mode. Above 21ML, a layer-by-layer growth mode was observed.

采用低温生长的方法(衬底温度145K),通过对生长条件的优化,我们在Si(111)衬底上制备出了具有原子级平整度的Pb 薄膜,用STM 和ARPES确定了其特殊的生长模式:室温下成膜的临界厚度是10ML,随后是一种双层生长模式,覆盖度高于21ML 时,薄膜生长基本上是层状生长的模式。

Results show that when the thickness is less than 0.7 nm, Si3N4, normally amorphous in deposition state, could form a NaCl-type pseduocrystal structure due to the template effect of TiN crystal layer. Crystallized Si3N4 layers and TiN template layers grow coherently into columnar crystals with (111) preferred orientation. Correspondingly, the hardness of the films was enhanced to a maxim value of 38.5 GPa, showing a superhardness effect.

结果表明,在TiN调制层晶体结构的模板作用下,溅射态以非晶存在的Si3N4层在其厚度小于0.7 nm时被强制晶化为NaCl结构的赝晶体,多层膜形成共格外延生长的(111)择优取向超晶格柱状晶,并相应产生硬度显著升高的超硬效应,最高硬度达到38.5 GPa。

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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。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

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