The claudin family of tight junction proteins is the major component of the tight junction complex. It maintains the paracellular selective permeability of solutes and ions, and is regulated by protein kinases.
紧密连接蛋白c laud ins是构成紧密连接复合物的主要成分，维持细胞间离子和溶质的选择性渗透，c laud ins的调节主要通过蛋白激酶途径实现。
Owing to its high selective ethanol permeability with the virtue of insulating other inorganic ions, the nonporous hydrophobic silicone rubber membrane has been used to construct the membrane bioreactor for continuous ethanol fermentation.
硅橡胶膜作为一种均相聚合物材料无孔膜，具有不透无机盐成分、疏水性和对乙醇有较高的选择透过性等优点，已被研究用于构成连续发酵制造乙醇的膜生物反应器。
It utilizes the selective permeability of membrane to produce effluent and achieve biological concentration in the biochemical reaction tank, greatly raising the efficiency of biological treatment.
利用膜的选择透过性产水，在生化池中实现生物富集，生物处理效率大幅提高。
A homogeneous anion exchange membrane with selective permeability was been applied to gold electrolysis.
采用具有选择透过性的均质阴离子交换膜进行金电解。
Owing to its high selective permeability and with the virtue of insulating other inorganic ions, the nonporous hydrophobic silicone rubber [polydimethysiloxane (PDMS)] membrane has been investigated for separation of volatile organic compounds from their aqueous solutions by pervaporation or vapor-permeation.
无孔的硅橡胶膜具有不透无机盐成分、疏水性和对挥发性有机物组分有较高的渗透选择性等优点，已被研究用于挥发性有机化合物的渗透汽化或蒸汽渗透分离。
The results showed that the aromatics selective permeability of composite membrane was affected by both solubility selectivity and diffusion selectivity.
结果表明，复合膜的芳烃选择性是溶解选择性和扩散选择性共同作用的结果。
Preparation amd oxygen-nitrogen selective permeability of organosilicon plasma polymer composite membranes
有机硅等离子体聚合物复合膜的制备及氧氮选择透过性能
As exploitation of polymer-flooding was concerned, the main productive zone and selective zone for fracturing were both high-permeability reservoirs, polymer and additives in the fracturing fluid were able to penetrate most of the pore throats and formed mud cake.
对聚驱开采而言，其主力产油层和压裂目的层同属高渗透油层，压裂液中聚合物和添加剂能够穿透多数孔喉形成内部滤饼。
The principle is to decrease the permeability of the condensation water through partially blocking the water flow channel by the temporary and selective crystallization of special chemical agent.
其原理是化学剂通过在地层中暂时和选择性地在水流通道中结晶，部分堵塞冷凝水流动通道降低冷凝水相的渗透率，从而控制其流度。
Synthetic polymer oxy enriching membrane has selective permeability for gases and under pressure, it can obtain enriched oxygen air, provided for patient, from atmosphere.
合成高分子富氧膜对气体具有选择透过性，在压力的驱动下，可直接从空气中获得富氧空气，供患者使用。
Its form and intensity in different areas of the buried hills and different evolution stage are very different and has caused the change of reservoir properties, namely increasing heterogeneity: intensive and selective corrosion has caused obvoius enlargment of the pre—existing pores and increase of permeability of algal sparry dolomite located in main permeable course and dilution zone of water injection, precipitation of secondary minerals has caused the reduction of porosity and decrease of permeability in the upper part of oil pool and oil—water contact.
古潜山不同区段在油藏保存和开发期，其水—岩作用方式与强度具有明显的差异性，导致储渗性能的非均质性增强：在主渗流带中的亮晶藻屑白云岩由于受到多期强烈的选择性溶蚀作用，孔洞发育，渗透性增强；而在油藏顶部和底部油水混合带中，水—岩作用以次生矿物沉淀为主，孔隙被充填，渗透性降低。
But its bioavailability is relatively lower due to its high molecular weight, high apparent viscosity, complex structure and selective permeability of cell membrance.
但由于CS高分子量、高表观粘度、结构复杂及细胞膜的选择透过性等因素，造成了其生物利用率较低。
The selective water plugging agent of cation polyacrylamide is chosen, the core simulation experiment show that, for the cores with different permeability, the water plugging rate is greater than 85% and the oil plugging rate is about 20%.
选择了阳离子聚丙烯酰胺类选堵剂.岩心模拟实验表明，对于不同渗透率的岩心，该堵剂的堵水率大于85%，堵油率在20%左右，具有良好的选择性；
Conclusions The change of BBB permeability in VBE is related to the activity of AC. AC pAb has a selective therapeutic effect on VBE, especially for edema in the white matter.
结论：AC活性与VBE中BBB的通透性改变有关，ACpAb对VBE尤其是脑白质水肿有选择性治疗作用。
Preparation and Application of Selective Water Shutoff Agent JTD for High Permeability Reservoir Formations
高渗透地层选择性堵水剂JTD的研制与应用
A cement slurry system that has selective permeability, both water plugging and oleophobic property has been obtained by laboratory experiments.
通过室内实验获得了具有选择性渗透性能的堵水疏油的水泥浆体系配方；
The selective water plugging agent of cation polyacrylamide is chosen, the core simulation experiment show that, for the cores with different permeability, the water plugging rate is greater than 85 % and the oil plugging rate is about 20 %.
选择了阳离子聚丙烯酰胺类选堵剂.岩心模拟实验表明，对于不同渗透率的岩心，该堵剂的堵水率大于85%，堵油率在20%左右，具有良好的选择性；