渗透性

Permeability of ordinary concrete is determined by pervious test and electricity method in this paper, and the relativity of the results of the two methods is researched.

在高性能混凝土的渗透性和耐久性研究中，利用电化学理论对其进行快速评定是目前较常用的一种方法，而传统的透水试验方法则难以实施。

In sugar plant, using ZSF68 can obtain more sugar owning to the enhancement of water perviousness; it can be used as emulsifier when vinyl acetate latex polymerizes. If ZSF68 is used as paper making adjuvant, it can effectively improve the quality of chrome paper.

在糖厂使用ZSF68，由于水的渗透性增加，可获得更多的糖分；在醋酸乙烯乳液聚合时作乳化剂；还可用作造纸助剂，ZSF68能有效地提高铜版纸的质量。

In order to overcome the shortcomings of acellular dermal matrix used as tissue engineering scaffold material, such as bad permeability, low degradation speed, and strong immunogenicity, a new type of collagen scaffold was prepared by applying various chemical, biological and physical comprehensive methods to deal with pigskin. The microstructure of the scaffold was observed under photomicroscope and scanning electron microscopy, and the in vitro degradation time, permeability, tensile-strength, porosity, shrinkage temperature were tested.

为了克服猪脱细胞真皮基质作为组织工程支架材料渗透性差、降解速度过慢、免疫原性较强等缺点，采用多种化学、生物与物理综合方法处理猪皮制备了一种新型天然胶原支架材料，通过光学显微镜、扫描电镜观察以及体外降解时间、透水汽性、拉伸强度、孔隙率、收缩温度等的测定，对其性能进行了研究。

The microstructure of the scaffold was observed under photomicroscope and scanning electron microscopy,and the in vitro degradation time,permeability,tensile-strength,porosity,shrinka...

实验结果显示：支架中的成纤维细胞、脂肪细胞及组织纤维间质完全去除，胶原纤维得到了松散，并维持其原有的天然三维网络多孔结构；该材料透水汽性处于3000g.m-2.d-1左右，适合创面恢复；体外降解时间处于25～50h之间，并可根据需要调整工艺条件控制降解时间；拉伸强度介于10.20～11.50MPa之间，具有良好的拉伸强度；收缩温度介于70～85℃之间。上述结果表明该材料已解决了猪脱细胞真皮基质渗透性差、降解速度过慢的缺点，并且其透气性和拉伸强度高、降解性优良且可控，符合组织工程支架材料的要求。

In the current study, a series of cationic α-helical peptides of 20 a.a. were designed and synthesized based on four structural parameters, including charge, polar angle, hydrophobicity, and hydrophobic moment. Several methods were performed to describe the influence of these parameters on the antimicrobial and hemolytic activity, and on the permeabilizing effect on model membranes. The potential of these parameters to increase the antibacterial activity and to improve the prokaryotic selectivity is assessed.

本实验利用自行设计合成的人工抗菌胜肽当模型，固定长度为 20 个胺基酸，改变其电荷、极性角度、疏水性及疏水性矩等四种结构特性，并利用其对各种不同病原菌之抗菌活性及对兔子红血球细胞的溶血活性来研究其结构特性的改变对其抗菌活性、选择性及微脂体膜的渗透性之影响，以期望改变结构参数能增加抗菌活性及对原核的选择性。

Main reasons:(1) the concentration of inking oil is not sufficient, permealbe gompound, even if the paper texture is not very loose, will for excessive infiltration, resulting in an imprinted Powdering;(2) the silver and gold and silver ink is made of powder and inking oil leveling, and for the parents and poor performance.

主要原因：( 1 )调墨油的浓度不足，渗透性物质含量较多，即使纸张的质地不是很疏松，也会由于连接料的过量渗透，造成印迹粉化；( 2 )金银墨是由金银粉末与调墨油调配而成的，粉末与连接料的亲和性能较差。

The principal direction of small-scale movement is from a shale or clay to a sandstone or other permeable bed.

小范围运动主要从页岩或粘土岩向砂岩或其他渗透性地层中运动。

The analysis of the acided-fracturing effect by the transient well test prove to be not all the reservoir that has not the high producibility, the reservoir damage is the dominating factor of the affecting acided-fracturing effect, and that the acided-fracturing...

通过不稳定试井测试对酸化压裂效果的分析证明：并非所有地层都不具备高产能力；对一些原来渗透性小而没有伤害的地层进行酸化压裂也能取得一定的效果，但是对生产井产能的提高作用是很有限的；地层伤害是影响酸化压裂效果的主要因素。

Wood vinegar, or pyroligneous acid, is the fluid or sap derived from tree cells, which exhibits exceptional permeability and sterilizing properties.

木醋是从植物细胞中提取精练而来的，它有着非常强的渗透性，并且还有杀菌的特性。

The cavity is taken as partially sealed with partial permeable boundary considering the relative permeability of the liner and the medium.

考 虑衬砌和介质的相对渗透性，孔洞处于半封闭状态，边界半透水。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。