نتایج جستجو برای: damavand city
تعداد نتایج: 154865 فیلتر نتایج به سال:
در این مقاله سیستم تأمین انرژی و تخلیه جریان سیمپیچ چنبرهای توکامک دماوند به منظور افزایش زمان میدانهای مغناطیسی با هدف ماندگاری پلاسما، طراحی شبیهسازی شده است. حال حاضر سیمپیچ دارای نیم سیکل سینوسی مدت ms 100 پیک kA 12 است که میدان مغناطیس تقریباً T 1/1 مرکز چنبره تولید میکند ناحیه تخت آن حدود 20 میباشد برای تشکیل محصورسازی پلاسما استفاده میگردد. ارتقاء 200، ضروری سیستمهای کنترل مربو...
Introduction: Food borne illnesses are usually infectious or toxic in nature and caused by bacteria, viruses, parasites or chemical substances entering the body through contaminated food or water. Unsafe food causes more than 200 diseases - ranging from diarrhea to cancers. Food safety is a public health priority. The aim of present study was determine level of health communicators' knowledge a...
ناخالصی های پلاسما یکی از عوامل اتلاف انرژی محصور شده در توکامکها به شمار میروند که این منظر مطالعه و بررسی آنها راستای حفظ پایداری پلاسمای توکامک بهبود کیفیت محصورسازی امری ضروری خواهد بود. کار تحقیقاتی منظور ناخالصیهای دماوند، تکفامساز نوری موجود آزمایشگاه دماوند همراه یک آرایه خطی CCD ساختار طیفسنج نور مریی گرفته شد. سامانه طیفسنج جدید توسط طول موجهای مشخصه لامپ جیوه کالیبره ر...
damavand is a large dormant stratovolcano in the alborz mountains of northern iran located in one of the most populous provinces, which could be adversely affected by tephra fall from damavand. the youngest known eruption is a lava flow on the western flanks with an age of 7.3 ka. the volcanic products are predominantly porphyritic trachyandesite. three major young pumice deposits, named here a...
soil and land information is vital for land use planning and infrastructure development. maps of soils landscapes are powerful tools to guide sustainable planning and natural resource management. fuzzy set theory has been widely used in soil science for soil classification and mapping, land evaluation, fuzzy soil geostatistics, soil quality indices. in fuzzy logic-based approaches, soil spatial...
In the present study, a series of experiments were performed to study collisions runaway electrons in Damavand tokamak by imaging hard x-ray radiations, as one secondary effects these electrons, using radiochromic films. For experiments, GAFCHROMIC™EBT2 dosimetry films selected due their high resolution capability. These instruments installed two strip and screen structures for one- two-dimensi...
Background: To determine the incidence and risk factors of acute mountain sickness (A - AMS) in pilgrims. Although it is well known that western trekkers suffer from acute mountain sickness (AMS) in other mountains, not much is documented about the incidence of AMS in the Damavand Mountains, Iranian population that go to high altitude and its related contributing factors. Materials and Methods:...
objective: investigating some biological side effects of radiations resulted from fusion reaction experiments in damavad tokamak. materials and methods: the absorbed dose of the personnel in damavand tokamak was measured using lif dosimeters and analyzed. results: in damavand in areas near the forbidden zone around this device the level of the received dose is very high (more than 6 msv for eac...
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