查询词典 cell membrane

One hand mechanical obstruct led to the increase of veinous resistance and the obstacle of microcirculation, the other hand the adhesive PMN was activated in excess, the white blood cells released a lot of enzymes, in which PMN-elastase can decompose the components of cell and many albumens, inclusive of immunoglobulin、alexin and fibrication. These components induced the injury of the pancreatic capillary vessels and cell and lysosome enzy made the tissue protein hydrolyze and produced unsaturated fatty acids, which destroyed the structure and function of cellar membrane. The inflammatory cellar factors activate other immunocytes to produce the injury and necrosis of tissue, which aggravated the pathological injury and led to shock、pyaemia and MODS. So ICAM-1 and LFA-1 played an important role in SAP. Frossard found that the expression of ICAM-1 in the rat model, especially in serum、pancreas and lung. All these showed ICAM-1 is an important factor in AP and concomitant lung injury.

胰腺小叶组织局部血管EC首先被激活，ICAM-1表达升高，与被激活的PMN表面表达的LFA-1相结合，"PMN-EC"相互作用加剧，一方面机械性阻塞毛细血管导致静脉阻力增加、微循环障碍；另一方面粘附的PMN过度吞噬或激活，当白细胞吞噬的颗粒不能被封闭隔离，连同细胞内的酶被释放出来，其中的PMN-elastase能够降解细胞基质中各种成分，水解多种蛋白，加重胰腺的毛细血管内皮细胞和腺泡的损伤；释放的溶酶体酶使组织蛋白水解，产生的不饱和脂肪酸引发脂质过氧化方应，破坏细胞膜的结构和功能；释放的炎性细胞因子，激发其他的免疫细胞的功能，导致进一步的组织损伤和坏死，加重SAP的病理损伤，最终导致休克、脓毒血症及多器官功能障碍等严重后果。

Largely unstructured in solution, linear peptides fold into an amphipathic helix upon binding and insert into the target membrane, leading to breakdown of the transmembranal potential and of ion gradients, thus causing leakage of cell contents, resulting finally in cell death.

大多数的抗菌胜肽在水溶液中是呈现松散的结构，但和目标微生物作用时会褶叠形成双性螺旋的结构并插入其膜内，导致破坏膜内外的电位及离子梯度，造成细胞的泄漏，最后导致细胞死亡。

These results showed that plant cell wall and cytoplasm membrane is the coat system of plant cell.

植物细胞包被系统的酸性降解使植物细胞器重组并产生新的原生质体成为可能。

In addition, the membrane polarization time is gained from cell's simplified equivalent circuits and approved by system time constant of the state space equations of cell suspended system. Secondly, Laplace equations of the ideal model are built based on Faraday's Law, Gauss's Law, and charge conservation to analyze and calculate the amplitude and variation of transmembrane potential detailedly.

为了对微生物脉冲电场效应进行理论上的分析，首先，本文从细胞膜的结构、组成及功能入手，建立了微生物细胞的介电模型，求出了细胞膜的介质极化时间常数，并通过系统状态空间方程对其进行了验证。

Whole and rhinal mucous membrane is cilium of holiday answer layer columnar and epithelial, meantime has smell cell, cup cell and secretory system, and quite rich blood-vessel.

整个鼻腔粘膜为假复层纤毛柱状上皮，其间有嗅细胞、杯细胞和分泌腺体，以及相当丰富的血管。

Gas diffusion layer is one of the most important components in proton exchange membrane fuel cell. The contact resistance between current collector and gas diffusion layer is an important part of the total resistance of fuel cell and is also a key factor led to the power loss of PEMFC.

气体扩散层是质子交换膜燃料电池的重要组件，其与极板之间的接触电阻是燃料电池内阻的重要组成部分，也是导致燃料电池功率损失的重要因素。

After developing 48 hours, hepatocytes enters 2.0 mM t-butyl hydroperxide or 2.0 mM diamide to induced cell blebbing. The samples collected at 0, 15, 30, 60 minutes to analyze cell about membrane protein thiol deletion; the leakage of lactate dehydrodenase; the change of glutathione; the lipid peroxidation; the variation of actin and tubulin, and use Confocal fluorescent microscope to observe the change of actin and tubulin in rat hepatocytes.

肝细胞在48小时培养后，分别加入2.0mM t-buty1 hydroperoxide或2.0 mM diamide诱发细胞膜小泡生成，并分别於0、15、30、60分钟取样，分析细胞膜硫醇流失程度；乳酸去氢□渗漏；□胱甘□浓度变化；脂质过氧化；肌动蛋白与管蛋白变化；并利用雷射共轭焦萤光显微镜观察肝细胞中肌动蛋白及管蛋白的变化。

In this paper, leaf epidermis of Arabidopsis thaliana were used as main material, guard cell protoplasts with high activity were isolated, the relation between H~+-ATPase and calcium channel in plasma membrane of guard cells was investigated with whole cell patch clamping.

本论文以WS生态型拟南芥叶片表皮为实验材料，成功分离出高活性的保卫细胞原生质体，利用膜片钳技术对保卫细胞信号转导过程中质膜质子泵与质膜钙通道之间是否存在一定的关系进行了研究。

Due to the electrochemical reaction and Ohmic resistance, the proton exchange membrane fuel cell would generate heat internally as it is working. To keep the membrane-electrode assembly working at appropriate temperature is essential for maintaining good performance.

质子交换膜燃料电池运作时，由於电化学反应与欧姆阻抗等作用会由内部不断发热，此时其膜电极组是否能保持在容许温度范围内运作攸关其效能。

The main research work of this dissertation is as follows: Based on the chemical reaction engineering theory and the nitrobenzene electroreduction mechanism, the plate and frame electrolyzer was designed and applied to the process of electroreduction nitrobenzene to p-aminophenol. This dissertation measured the residence time distribution data of the electrolyzer by means of the pulse response method and studied the rule of flow pattern along with the current capacity change. Under different conditions ,this dissertation studied the cyclic voltammetry properties of nitrobenzene on different electrodes by means of the dynamic cyclic voltammetry method and the electrode materials applied to the NB electroreduction have been selected primarily.Baseed on the results of cyclic voltammetry tests, this dissertation used p-electrode systems to measure the steady-state- polarization curves of nitrobenzene on different electrodes in H-type diaphragm cell, and obtained each primary factor s influence rule and the exchange current density value of each electrode.And then on the basis of the conclusions of fundamental researchs upword, the effects of influence factors on the the yield of p-aminophenol and the current efficiency,such as electrode material, current density, quantity of electricity circulated, nitrobenzene concentration . sulpuric acid concentration and so on, have been studied in detail in the systems of hign temperature , strong acidity and oxygen-poorthrough a series of electrolysis experiments in this paper.After all using Pb as anode Monel metal as cathode Dupont Nafion 417 cation-exchange membrane as membrane, this dissertation obtained the optimum technological condition: reaction temperature about 85C, current density 500A m-2, sulphuric acid concentration 20%wt.

论文的主要研究工作为：运用化学反应工程理论，结合硝基苯的电还原机理，设计出用于硝基苯直接电还原合成对氨基苯酚实验的板框式电解槽，并利用脉冲响应法测定了该板框式电解槽的停留时间分布数据，研究了流型随流量变化的规律；通过动态循环伏安法研究了硝基苯在不同电极上、不同条件下的循环伏安特性，初步评选出了用于硝基苯电还原的电极材料；结合循环伏安的测定结果，在H型隔膜电解槽中采用三电极体系测定了硝基苯在不同电极上、不同条件下的稳态极化曲线，得到了各主要因素的影响规律及硝基苯在各个电极上电还原的交换电流密度数值；在基础研究结论指导下，采用板框式电解槽，在高温、强酸、贫氧系统中，进行了一系列的电解实验，分别考察了电极材料、电流密度、通电量、硝基苯浓度、硫酸浓度等因素对收率及电流效率的影响，最终选择以蒙乃尔合金电极作为阴极、铅合金为阳极、Dupont Nofion 417阳离子交换膜为隔膜，得到由硝基苯直接电还原制对氨基苯酚的最佳电解工艺条件：反应温度85℃，电流密度500A·m~(-2)，硫酸浓度20％wt。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。