نتایج جستجو برای: crystalization
تعداد نتایج: 64 فیلتر نتایج به سال:
Crystallization is a widely used technology for solid-liquid separation in the process industry. It is extensively used in the production of pharmaceuticals to separate the drug from the solvent mixture as well as to ensure that the drug crystal product conforms to size and morphology specifications. The crystal size in crystallization processes is one of the most important variables since it i...
this article describes the preparation and analysis of nano hydroxyapatite (ha) films on stainless steel 316l through sol-gel technique. the process started with preparation of a nitrate and phosphate sol. after aging the sol for 24 h at room temperature a ss316 substrate was dip-coated and heat-treated at 350 to 450 °c for different times in air. the coating phase and structure on substrate we...
Two of the three major outer layers of the Chlamydomonas reinhardtii cell wall (W6 and W4) can be solubilized from living cells with sodium perchlorate or other chaotropes and will repolymerize in vitro to form milligram amounts of wall crystals. Conditions for optimal crystalization are presented, and conditions that fail to induce polymerization are exploited to maintain monomers in aqueous s...
Good footwear should be comfortable, long-lasting and fit for purpose, polyurethanes allow designers to meet all of these objectives. Polyurethanes are used in the industry make insoles shoe soles.There two types PU soles a polyether polyester based sole. Polyether have high resistance against hydrolysis low oil while resistance. In this work thermal mechanical properties elastomers with polols...
Valleytronics is rapidly emerging as an exciting area of basic and applied research. In two-dimensional systems, valley polarization can dramatically modify physical properties through electron-electron interactions as demonstrated by such phenomena as the fractional quantum Hall effect and the metal-insulator transition. Here, we address the electrons' spin alignment in a magnetic field in sil...
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