نتایج جستجو برای: dose response
تعداد نتایج: 1225019 فیلتر نتایج به سال:
background: to determine which radiotherapy parameters are associated with the tumor response of locally advanced non-small cell lung cancer (nsclc) patients undergoing concurrent chemoradiotherapy. materials and methods: thirty one patients with iiia/iiib nsclc underwent chemoradiotherapy with a median dose of 63 gy. on our actual treatments, we made radiotherapy planning to cover the planning...
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سیلیسیوم از دیدگاه تغذیه گیاه بهعنوان عنصر ضروری شناخته نشده است لیکن نشانههای مثبت آن بر رشد بسیاری از گیاهان دیده شده است. بهمنظور مطالعه تاثیر مقادیر مختلف سیلیسیوم و نیتروژن بر اجزای عملکرد دو رقم گندم پیشتاز و روشن، پژوهشی در شهرستان تربت حیدریه واقع در استان خراسان رضوی در سال 90-89 بصورت آزمایش فاکتوریل در قالب طرح کاملا تصادفی با چهار تکرار در شرایط گلخانهای انجام شد. فاکتورهای آزم...
introduction : intestinal ischemia and reperfusion (i-i/r) is an insult associated with acute respiratory distress syndrome (ards). herein we evaluate the dose-response effect of low-level laser therapy (lllt) on lung inflammation induced by i-i/r. methods : mice were subjected to mesenteric artery occlusion (45 min) and killed after clamp release and intestinal reperfusion (2h). increasing dos...
background: cytogenetic tests are usually used for diagnosing predisposed individuals to cancer by determining their lymphocyte radiosensitivity. objective: to determine the potential role of radiosensitivity in predisposition of prostate cancer by comparing lymphocyte radiosensitivity of prostate cancer patients with healthy donors. materials and methods: the blood samples of 10 prostate cance...
some areas of ramsar, a city in northern iran are among the world’s wellknown inhabited areas with highest levels of natural radiation. annual exposure levels in these areas are up to 260 mgy y‐1 and the mean exposure rate is about 10 mgy y‐1 for a population of about 2000 residents. if elevated levels of natural radiation as high as a few hundred msv per year is detrimental to health and leads...
background: an effective polymer gel dosimeter can be fabricated by varying the composition of its chemical components. materials and methods: the magat gel dosimeter formulations that used different compositions of methacrylic acid (maa) and gelatin were extensively investigated in the present study according to the r2–dose response and r2–dose sensitivity. the irradiation of magat gel was per...
objective: radiation effects induced in non-irradiated cells are termed radiation-induced bystander effects (ribe). the present study intends to examine the ribe response of qu-db bystander cells to first, second and third radiation fractions and compare their cumulative outcome with an equal, single acute dose. materials and methods: this experimental study irradiated three groups of target ce...
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