نتایج جستجو برای: membranes distance
تعداد نتایج: 330699 فیلتر نتایج به سال:
The FORMERLY-Math package is designed for the form-finding of compressed or tensile membranes in Mathematica. allows calculation actual load a structure based on defined reference surface obtained through procedure assigned by user. With constraint minimizing distance between and new structure, performs structure. One key advantages this code that it operates continuous surfaces automatically d...
Sulfoanted poly(ether ether ketone) membranes were prepared by the sulfonating agent sulfuric acid. These membranes were modifed by incorporating conducting polymer polypyrrole in order to increase the ionic conductivity and reduce the methanol transmission rate. The modifed composite membranes were then compared on the basis of ionic conductivity, methanol transmission...
Background and Aim: Studies have shown that probably there are compounds with protective effects on delivery channels and chorionic membranes which prevent the uterus and the embryo from bacterial contamination. The present study aimed to assess anti-bacterial properties of chorionic membranes in comparison with the effects of some common antibiotics . Materials and Methods: This study w...
TThis study investigated the water absorption of chitosan, collagen, and chitosan/collagen blend membranes exposed to gamma-ray irradiation. These membranes were produced via the solvent evaporation method. All membranes then underwent irradiation at 15 or 25 kGy gamma-ray doses, while membranes without irradiation were used as controls. After immersing the membranes in distilled water for up t...
context this article reviews the available evidence about the barrier membranes utilized in guided tissue regeneration process to prevent the migration of unfavorable cells to the wound area. evidence acquisition available evidence about membranes properties and their different uses were reviewed, and the results of clinical and animal studies and systematic reviews were gathered. results a lar...
Particulate matter (PM) pollution has become a serious threat to human health. Accordingly, an air filtration media that can efficiently remove particulate should be developed immediately. Nanofibrous membrane filter prepared by electrospinning technology nanoscale diameter, high specific surface area, and relatively porosity, which are suitable for dust removal. This paper explored the effects...
Grinded glass fiber (GGF) embedded high density polyethylene (HDPE) membranes were prepared via thermally induced phase separation method. FESEM images showed that all the membranes had leafy structure, indicating a solid-liquid mechanism during phase separation. The results of EDX and TGA analyses confirmed that the fibers were dispersed in the HDPE matrix uniformly. Normalized water flux of t...
over the past decade, many applications were intended for filtration by membrane technology especially the thin film composite (tfc) membranes. in advanced developments of thin film membranes, an attempt was made to spread a new generation of membranes called thin film nano composite (tfn) membranes. however, in the last generation of tfns, an ultrathin selective film of nanoparticles is coated...
Over the past decade, many applications were intended for filtration by membrane technology especially the thin film composite (TFC) membranes. In advanced developments of thin film membranes, an attempt was made to spread a new generation of membranes called thin film nano composite (TFN) membranes. However, in the last generation of TFNs, an ultrathin selective film of nanoparticles is coated...
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