نتایج جستجو برای: ion exchange
تعداد نتایج: 381033 فیلتر نتایج به سال:
A Li vapor cell has successfully converted a He ion beam to a He ion beam by double charge exchange reaction. Emittance of the He ion beam and that of the He beam were independently measured to study emittance growth during the passage of the charge exchange cell. Each component was seperated by electrostatic deection after passing through a beam shaping slit. The result had shown that the emi...
The effective ion-exchange capacities of ion-exchange materials were determined by measuring the change in the equilibrium conductivity of a column packed with analyte. The developed instrumental method can provide effective ion-exchange capacities for both cation and anion exchangers with simple operations. The cation-exchange capacity of a weak-acid cation-exchange resin (TSKgel SuperIC-Catio...
سولفات پتاسیم بدلیل اهمیت در صنایع مختلف به روشهای متفاوت (سنتز و جز آن) تولید و به بازار مصرف عرضه می شود. سنتز با روش مانهایم، از مهمترین متدهای تولید این ماده محسوب می شود، با این حال بدلیل هزینه های بالا و آلودگی حرارتی محیط زیست در استفاده از کوره های با دمای زیاد، این روش مشکلات عدیده ای در پی دارد به همین سبب در این پروژه یک روش بر اساس پدیده تعویض یون در تولید این محصول ارائه شده است. ص...
Ion exchange resins (IER) are cross-linked, water insoluble polymers carrying ionizable functional groups on their repeating positions. They are considered as safe materials due to their insoluble and nonabsorbable nature. This advantage made IER subject of several research in different areas of pharmaceutical technology such as oral sustained release, taste masking, rapid dissolution, stabilit...
Objective: In this study, the zeolite-coated iron oxide nanoparticles were evaluated as MRI contrast agent and effect of the nanocomposite synthesis method on MRI contrast was tested. Materials and Methods: Ion exchange method was used for synthesis of iron oxide-zeolite and the as prepared nanocomposite was characterized by XRD, FESEM and TEM. The nanocomposite toxicity in the cell culture, a...
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