Preliminary Research on Effect Factors of Permeation Flux of PVDF Microporous Hollow Fiber Membrane;
影响聚偏氟乙烯膜渗透通量因素的初步考察
Influence of pretreament regeants on surface property and permeation flux of ceramic membrane;
预处理剂对陶瓷膜表面性质及渗透通量的影响
The effects of / and temperature on properties of ultrafiltration membrane were discussed and the pure water permeation flux,separation property,hydrophihilicity of the surface,fouling tendency and infrared reflectance spectroscopy(IRS) of the ultrafiltration membrane before and after modifying were measured.
采用Fenton试剂对聚偏氟乙烯(PVDF)膜进行氧化改性,研究了[H2O2]/[Fe2+]及温度对超滤膜性能的影响,测定了改性前后超滤膜的纯水渗透通量、截留性能、膜表面亲水性、耐污染性性能及红外光谱。
The results showed the penetration flux of the membrane was 5.
探讨了原料液预处理、超声清洗和表面活性剂膜面表面改性三种强化措施对N-乙酰化超滤膜超滤过程中的浓差极化和膜污染的控制,结果表明:经过原料液真空抽滤和20-30W超声15min以及在非离子表面活性剂APE中浸泡10h的物理和化学清洗相结合的方式,可使膜在一个月内保持纯水渗透通量在5。
By incorporating diffusion parameters derived from atomistic Kinetic Monte Carlo(KMC) simulations a mass transfer model for predicting permeation fluxes of benzene in NaY zeolite membrane and supports has been developed,in which surface diffusion in the membrane and the bulk and Knudsen diffusion are described by applying the Maxwell-Stefan theory.
预测结果与文献实验值比较,定量证实苯在NaY沸石中的扩散机制主要是经SⅡ-W-SⅡ笼间跳跃而发生的长程运动;对本文计算体系,支撑层阻力使苯的渗透通量减小1个数量级,阻力的大小与支撑层结构及吹扫气体性质等因素有关,大孔和规则孔道可减小支撑层阻力,增大苯通量,小分子吹扫气体产生阻力相对较小。
A mass transfer model for predicting permeation fluxes of single gases and a binary mixture of methane and ethane in a modular MFI zeolite membrane and support layer has been developed,in which the surface diffusion and activated gaseous diffusion in the membrane and the bulk and Knudsen diffusion are described by applying the Maxwell-Stefan formulation.
结果表明:支撑层阻力对单组分以及混合物在膜组件中的渗透通量有显著影响,阻力大小与支撑层结构(孔径和空隙率等)相关;支撑层阻力中努森扩散阻力的效应对分子量大的组分以及在较低分离温度下不能忽略;考虑支撑层阻力时,甲烷、乙烷在膜层中气相活化扩散的活化能分别为(8。
scientific solution of equivalent seepage tensor of rock mass,abbr.
根据对岩体结构面及地下水渗流量的调查和观测，概化出渗透结构面及其分组，利用极值控制法求出渗透结构面的渗透系数，进而求出岩体初始渗透张量；基于初始渗透张量及观测渗流量利用有限元法反求岩体等效渗透张量。
anisotropic seepage characteristics of the limestone aquifers, using back -calculation and finite analysis methed (FAM) , it obtains the seepage tensor of the rock mass Then ?the quantitative calculations of the possible amount of seepage for the inter -river land mass at different storage water lev.
据地下水长观资料及石灰岩含水层渗流的非均质各向异性特征,用有限分析法(FAM)反求了岩体的渗透张量。
The retention rate, flux and aperture structure of chitosan membranes were affected by temperature of the coagulation bath.
7%;凝固浴的温度、凝固剂的浓度、凝固时间等参数对聚氨基葡糖超滤膜的截留率、渗透通量和孔结构均有一定的影响,选择适当的处理条件可提高膜的分离效率。
The effects on flux of tangential flow rate, time, pressure and temperature were investigated.
研究了错流方式的板式膜组件的切向流速、时间、压力、温度等对渗透通量的影响 。
The effects of tangential flow rate, the concentration of colostrum whey and pressure drop on the flux through the ultrafiltration membrane were investigated and a mathematic resistance model of flux has been established.
研究了错流方式的板式膜组件的切向流速、初乳乳清的浓度、操作压差等对渗透通量的影响,并建立了超滤的数学模型。
Permeate Flux Model of Cross-flux for Micellar-enhanced Ultrafiltration in Stable State;
横向流胶团强化超滤稳态时渗透通量模型研究
These membranes provide high permeate flux and good salt rejection in reverse osmosis, and are easy to manufacture.
这些膜在反渗透中提供了高渗透通量和优秀的盐选择能力,并且易于生产。
Improving the permeation flux and selectivities of membranes and achieving moderation balance between them are the Important points in the present study.
提高膜的选择性和渗透通量，以及如何使两者取得适度平衡等是当前研究的重点。
Another is a power function equation for the dynamic attenuation of flux, which shows the real varying process of flux with time and fits the experimental data better than the existed linear one.
后者是一个幂函数模型，比原有的线性模型更贴近渗透通量随时间变化的实际过程。
The rate of flow of a liquid or gas through a porous material.
渗透度，渗透率液体或气体通过渗透材料流的量度
To diffuse or cause to diffuse by osmosis.
（使）渗透通过渗透作用渗出或使渗出
It results from the uptake of water into the cell by osmosis.
其产生是由于细胞通过渗透作用吸收大量水分引起的。
Analysis on Common Quality Defects of Concrete Grouting Pile with Auger Drill in Serious Permeable Formation
强渗透性地层旋挖钻施工混凝土灌注桩质量通病分析
Pervaporation performance of ZSM-5 filled silicone composite membranes with high flux
高通量ZSM-5填充硅橡胶复合膜渗透汽化性能研究
Permeability of low-heat cement pavement concrete using water permeability pressure test and rapid chloride penetrability test
水压法与电通量法评价低热水泥道路混凝土渗透性
A device for measuring osmotic pressure.
渗压计测量渗透压力的仪器
A Pressure Pulse Technique to Test Liquid Permeability of Core with Low Permeability.
测量低渗岩心液体渗透率的压力脉冲技术
Oil well production in non-linear flow model of ultra-low permeability reservoir
特低渗透油田非线性渗流模型下井网产量
Plasma Membrane Channels and Responses to Osmotic Stress in Plant;
膜通道蛋白与植物对渗透胁迫的响应
Two methods are used to evaluate the permeability of cores.
有两种方法可用来测量岩芯的渗透率。
Study on Measuring Method of Permeability by Using Storage-variable Transient Pulse Method
变容压力脉冲渗透系数测量方法研究
Research on Measurement of Oil-water Relative Permeability Based on DSP
基于DSP的油水相对渗透率测量的研究
Volume change method for testing rock or rock mass permeability
岩石(体)渗透性测试的体变量法研究