نتایج جستجو برای: si

تعداد نتایج: 74952  

Journal: :iranian journal of radiology 0
hodaiseh saharkhiz department of medical physics, faculty of medicine, tabriz university of medical sciences, tabriz, iran; student research committee, school of medicine, tabriz university of medical sciences, tabriz, iran nahideh gharehaghaji department of radiology, school of paramedicine, tabriz university of medical sciences, tabriz, iran; department of radiology, faculty of paramedicine, tabriz university of medical sciences, daneshgah square, tabriz, iran. tel.: +98-4113356911, fax: +98-4113368733 mahmood nazarpoor department of radiology, school of paramedicine, tabriz university of medical sciences, tabriz, iran asghar mesbahi department of medical physics, faculty of medicine, tabriz university of medical sciences, tabriz, iran masoud pourissa department of radiology, school of medicine, tabriz university of medical sciences, tabriz, iran

conclusions ti is an important parameter to consider in the relationship between si and nanoparticle concentrations. an increase in ti leads to a decrease in the range of linearity. results the results indicate that si depended on the concentration of nanoparticles and ti. in addition, si increased by increasing the tis ranging from 200 to 400 ms for all studied concentrations. the linear relat...

ژورنال: :پژوهش فیزیک ایران 0
علی بهاری a bahari university of mazandaranدانشگاه مازندران

در نانو ترنزیستورهای دهه اخیر، si(100) به عنوان یک زیرلایه یا بستر مناسب به کار می رود. مسائلی نظیر افزایش جریان تونلی و نشتی با کاهش اندازه قطعات الکترونیکی و بویژه ترانزیستورهای اثر میدانی سبب شده است تا امکان به کارگیری بیشتر آن مورد تردید قرار گیرد. به همین دلیل در کار حاضر تلاش شده است تا با انجام یک سری از آزمایشات و رشد فیلم های فرانازک بر روی هر دو زیرلایه si(100) و si(111) به بررسی نان...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1376

سیلیسایدها توسط لایه نشانی فلز بر روی نیمرسانای سیلسیم و پخت آن بوجود می آیند. سیلیسایدها هواص فلزی دارند و در تماس با نیمرسانا اتصال شاتکی می سازند. چنانچه دیود شاتکی به این روش ساخته شود ایده آل خواهد بود. از آنجا که دیود شاتکی ptsi/si مزایای متعددی دارد این دیود شاتکی مورد مطالعه نظری و تجربی قرار گرفته است . چگونگی تشکیل لایه ptsi و محاسبه ارتفاع سد دیود شاتکی ptsi/si هدف این پروژه می باشد....

Journal: :iranian journal of radiology 0
mahmood nazarpoor department of radiology, faculty of paramedicine, tabriz university of medical sciences, iran +98-4113368733, [email protected]; department of radiology, faculty of paramedicine, tabriz university of medical sciences, iran +98-4113368733, [email protected] masoud poureisa department of radiology, faculty of medicine, tabriz university of medical sciences, iran mohammad hossein daghighi department of radiology, faculty of medicine, tabriz university of medical sciences, iran

conclusion using standard imaging parameters, each mri sequence reaches its maximum si in a specific contrast concentration, which is highest in se and least in ir in a comparison between se, fse and ir sequences. results this study shows that maximum si will appear at different ranges in different sequences. the maximum si can be seen at concentrations of 5.95, 4.96 and 3.98mmol/l for se, fse ...

عبدل‌زاده, احمد , کیانی چالمردی, زهرا ,

Silicon (Si) nutrition may alleviate biotic and abiotic stresses including heavy metal deficiency and toxicity in plants. Iron deficiency and toxicity are important limiting factors in growth of rice. In the present study, role of Si nutrition on alleviation of iron deficiency and toxicity was investigated in rice plants. Plants were cultivated in greenhouse in hydroponics, using Yoshida soluti...

Journal: :journal of teaching language skills 2015
ali roohani tayyebeh darvishy

teachers can influence the complex process of learning in education, in general, and in second/foreign language (l2) learning in particular. in this light, understanding the factors influencing teachers’ pedagogical success can help l2 teachers achieve more effective teaching. this study then investigated the role of spiritual intelligence (si) in l2 teachers’ pedagogical success. in so doing, ...

Journal: :journal of agricultural science and technology 2015
f. a. assis j. a. moraes g. a. assis f. j. t. parolin

the sunflower caterpillar chlosyne lacinia saundersii (lepidoptera: nymphalidae) is considered a major pest in sunflower, causing severe defoliation and, thus, threatening production of oilseed. chemical control remains the most widely used method for the management of this defoliator. to manage insect pests, there is a need to use substances of low toxicity that are able to stimulate the plant...

Journal: :journal of agricultural science and technology 2012
hojat emami mohammad reza neyshabouri mahdi shorafa

soil quality is a necessary indicator of land management. different indices are applied to evaluate farming systems, soil types and land uses based on soil quality. the slope of retention curve at its inflection point has been defined as soil physical quality index (si) but the relationships between si and penetration resistance (pr), the least limiting water range (llwr), and available water c...

Journal: :زراعت دیم ایران 0
علیرضا توکلی مرکز تحقیقات کشاورزی و منابع طبیعی استان سمنان (شاهرود)

to study the effect of sowing date and a single irrigation (si) on yield and yield components of barley, a field experiment was conducted in dryland agricultural research institute (maragheh, iran) in 2004-06 cropping seasons, using a split plot based on a randomized complete block design with 3 replications. main plots were assigned to 3 levels of sowing date (early, normal and late). sub-plot...

Journal: :Orientalistische Literaturzeitung 1912

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