نتایج جستجو برای: membrane materials
تعداد نتایج: 812920 فیلتر نتایج به سال:
Background & Aims: Human amniotic membrane has some specific properties making it an appropriate biomaterial for using in vascular tissue engineering. In this study, amniotic membrane was preserved with different methods. Effects of preservation on amniotic extracellular matrix and adhesion of cultured endothelial cells to membrane were compared with fresh samples of amniotic membrane. Mate...
This review focuses on the preparation, structure and applications of ion-exchange membranes formed from various materials and exhibiting various functions (electrodialytic, perfluorinated sulphocation-exchange and novel laboratory-tested membranes). A number of experimental techniques for measuring electrotransport properties as well as the general procedure for membrane testing are also descr...
The exposure of blood to an artificial surface such as the haemodialysis membrane results in the nearly instantaneous deposition of a layer of plasma proteins. The composition of the protein layer profoundly influences all subsequent events, and to a large extent determines the biocompatibility of the biomaterial. In the present study, we examine the protein adsorption capacity and coagulation ...
Redox flow battery (RFB) has been widely considered to be one of the most promising grid-scale energy-storage technology. The membrane, namely separator, serves as preventing crossover positive and negative active species, while facilitating transport supporting electrolyte ions, is crucial achieve a high performance long-term stability for an RFB. Advances in RFBs require high-performance low-...
در این تحقیق، غشاهای سرامیکی گاما آلومینای نانوفیلتراسیون از طریق روش سل-ژل کلوئیدی ساخته شدند. پایه سرامیکی دیسکی شکل از طریق شکل دهی با دستگاه پرس در فشار 415 میگاپاسکال تهیه شد و در دمای 1500 c زینتر گردید. برای اصلاح خواص ساختاری غشا از تکنیک سل- ژل استفاده شد. ارزیابی فاز غشا با پراش اشعه ایکس بررسی شد و ارزیابی بافتی توسط جذب سطحی دفع سطحی نیتروژن، برای تعیین اندازه حفره بکار گرفته است و ...
غشاهای نانو حفره آلومینای آندیک از آلومینیم، در محلول اگزالیک اسید بوسیله فرایند آندایزینگ دو مرحله ای ساخته می شود. این غشاها به خاطر پایداری گرمایی و شیمیایی و ساختار یکنواخت حفره ها اهمیت زیادی پیدا کرده است. در این پژوهش مشخصاتی از قبیل قطر حفره و ضخامت لایه آندی که به وسیله شرایط مختلف آندایزینگ از جمله ولتاژ اعمالی، زمان آندایزینگ، غلظت الکترولیت و دمای آندایزینگ تغییر می کند، بررسی شده ا...
The polysulfone-based membrane has been used in hemodialysis (HD) and it is continuously developed to maintain its sustainability on the subject of biocompatibility. During the polysulfone-based membrane development, several parameters should be considered to improve the membrane performances, such as excellent biocompatibility, appropriate ultrafiltration rate, and effective clearance of the t...
objective(s): umbilical cord blood is a good source of the mesenchymal stem cells that can be banked, expanded and used in regenerative medicine. the objective of this study was to test whether amniotic membrane extract, as a rich source of growth factors such as basic-fibroblast growth factor, can promote the proliferation potential of the umbilical cord mesenchymal stem cells. materials and ...
Abstract The membranes can be synthesized from organic and inorganic materials. One of the based materials used was a cellulose acetate membrane banana peel. Banana peel comprised 65% cellulose, therefore it had potential to processed into membrane. Cellulose are using mixture skin with 55% acetone 27% dimethylformamide phase inversion technique. SEM results pictured porous pore size about 5 μm...
• Post-synthetic modification of two-dimensional metal-organic framework. CuBDC-NH 2 nanosheet reacts with isocyanate-terminated polyurethane oligomer(PU). The /PU is conducted to prepare functional nanocomposite membrane. membrane shows over 93.0% removal rate for dye removal. Two-dimensional framework (2D MOF) becoming as an attractive type 2D materials. And (PSM) provides a powerful method m...
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