نتایج جستجو برای: electron microscope

تعداد نتایج: 334151  

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده مهندسی شیمی 1393

در این پژوهش نحوه ساخت نانوکامپوزییت eva/ag و اثر ضد میکروبی آن در درصدهای مختلف نانو ذره نقره مورد بررسی قرار گرفته است.نانوکامپوزیت حاصل از نطر شکل شناختی ، اندازه ذرات، ساختمان شیمیایی ، با استفاده از تستهای sem(scanning electrou microscopy)،tem (transmission electron microscope) ، xrd (x-ray fluorescence spectroscopy) ،ftir (fourier transform infrared spectroscopy) مورد ارزیابی قرار گرفت. د...

Journal: :نشریه دانشکده فنی 0
پیروز پیروز

it is only thirteen years since the scanning electron microscope has been available commercially. yet, even in this short period of time, this instrument has been a powerful tool in the investigation of topography, electrical and magnetic properties, crystal structure, cathodoluminescent characteristics etc. of solid specimens. today, this type of microscope has opened its place alongside the c...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده برق 1390

یکی از مهمترین فاکتورهای تولید قیمت تمام شده میباشد, به این منظور از نانو فیلر پرداخت نشده استفاده شده و همینطور برای مخلوط کردن نانو به صورت یکنواخت در نمونه از دستگاه مخلوط کن با سرعت بالا همراه با دستگاه ultrasonic استفاده شده است. از آنجایی که چگونگی مخلوط شدن نانو داخل اپوکسی دارای اهمیت بالایی میباشد, برای مشاهده چگونگی مخلوط شدگی نانو داخل اپوکسی از عکسهای میکروسکوپی sem ( scanning elec...

Journal: :iranian journal of pathology 2008
alireza abdollahi issa jahanzad siamak fakhrian

background and objective: glumerular diseases are among the most prevalent causes of renal chronic insufficiencies. this study aimed to analyze the prevalence of various kinds of glumerulonephritis based on the findings of electron microscope. materials and methods: this study had a descriptive retrospective and cross sectional strategy. slides of patients (124 cases) who had undergone kidney b...

Journal: :iranian endodontic journal 0
saeed rahimi department of endodontics, dental school, tabriz university of medical sciences, tabriz, iran vahid zand department of endodontics, dental school, tabriz university of medical sciences, tabriz, iran shahriar shahi department of endodontics, dental school, tabriz university of medical sciences, tabriz, iran sahar shakouie department of endodontics, dental school, tabriz university of medical sciences, tabriz, iran mohammad forough reyhani department of endodontics, dental school, tabriz university of medical sciences, tabriz, iran mohammad mohammadi khoshro department of endodontics, dental school, shiraz university of medical sciences, shiraz, iran

introduction: the most important aims of root canal preparation are the removal of vital pulp tissue, remaining necrotic debris and infected dentin, eliminating the bulk of bacteria present in the root canal system. the aim of this study was to compare the cleaning efficacy of hand k-flexofiles and rotary race and k3 instruments in root canal preparation. materials and methods: a total of 60 si...

Journal: :JAPANES JOURNAL OF MEDICAL INSTRUMENTATION 1955

Journal: :basic and clinical cancer research 0
reshma mohamed ansari department of basic medical sciences, cyberjaya university college of medical sciences, malaysia ye tun department of basic medical sciences, international islamic university, kuantan, malaysia azmi md nor department of surgery, international islamic university kuantan, malaysia. yi yimyint department of basic medical sciences, international islamic university, kuantan, malaysia.

background of the study: colorectal cancer (crc) which is the third most diagnosed cancer throughout the world is steadily rising in the asian countries with the incidence rates mimicking the western counterparts. the pre-neoplastic nature of the transitional mucosa (tm) adjoining crc lacks conclusive evidence so far. pertaining to this, the study of the mucus layer, the functional component of...

Journal: :iranian journal of veterinary research 2009
r. peyghan l. nabavi k. jamshidi s. akbari

lizardfish is one of the economically important fishes of persian gulf. in recent years, white, ellipsoid, round or elongated nodules were found in body cavity of this fish species which in preliminary microscopic examination were recognized as microsporidia. to determine the approximate prevalence rate of microsporidian infection and to establish its taxonomic position, 50 lizardfish were boug...

2006
Sandra YY Fok Jeffrey S Rubin John Condeelis Filip Braet Lilian Soon

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی استان کرمان 1387

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