نتایج جستجو برای: xrd and sem methods

تعداد نتایج: 16926887  

Journal: :international journal of nano dimension 0
j. roul university department of pharmaceutical sciences, utkal university, bhubaneswar, odisha, india. s. k. sahoo university department of pharmaceutical sciences, utkal university, bhubaneswar, odisha, india. r. mohapatra university department of pharmaceutical sciences, utkal university, bhubaneswar, odisha, india.

this paper discusses about preparation of biodegradable polymer /clay nanocomposites based on organically modified montmorillonite clay; i.e. cloisite 10a and biodegradable polymer chitosan by solution mixing technique and their characterization. the nanocomposites were successfully prepared and their structures were characterized by powder x-ray diffraction (xrd), particle size analyzer (beckm...

Journal: :iranian journal of catalysis 2015
mojgan zendehdel kaveh khosravi maryam javadizadeh

the nano-cry zeolite synthesized and characterized by fourier transfer infrared (ft-ir), x-ray diffraction (xrd),and scanning electron microscopy (sem).the result show that nano catalyst prepared with mainly particles size about 30-80 nm .the xrd show the structure of the zeolite does not collapse. this nano-cry zeolite has been used as new, and nontoxic catalyst for catalyzes of synthesis of 2...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1393

the purpose of this study was to examine the english language needs of medical students at tehran university of medical sciences . analysis of the needs took place for three groups: 320 undergraduate students, 30 postgraduate students and 20 university instructors. a triangulation approach to collect data was used in which a combination of the quantitative (using the questionnaires) and qualita...

Journal: :Journal of Applied Sciences and Environmental Management 2015

Journal: :Malaysian Journal of Fundamental and Applied Sciences 2014

ژورنال: :پژوهه باستان سنجی 0
مسلم میش مست نهی moslem mishmastnehi freie universität berlinدانشگاه آزاد برلین

پژوهش و شناخت آثار تاریخی گچی در ایران دو مشکل فنی و واژه شناسی دارد. مشکل فنی موضوع این مقاله، عموماً ناشی از شناخت خصوصیات بلور گچ، هم چون تغییرات حلالیت یا شکل بلوری در اثر حضور مواد افزودنی یا تغییرات محیطی است. در این مقاله 3 نمونه ی تاریخی جمع آوری شده از کوه خواجه ی سیستان، قلعه الموت قزوین و شادیاخ نیشابور، و 3 نمونه ی مدلسازی شده ی جدید با توجه به ریزساختار بلوری آن ها بررسی می شود. آزم...

2013
Mohammad Abul Hossain Shahidul Islam

Carbon nanoparticles (CNPs) were synthesized by a simple way of incomplete combustion of kerosene. Synthesized nanoparticles were characterized by Scanning electron microscope (SEM), Energy dispersive x-ray (EDX), Powder x-ray diffractometry (XRD) and Fourier transform infrared spectroscopy (FTIR). The SEM particle sizes of prepared CNPs were found to be non-uniform. The average size of particl...

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