نتایج جستجو برای: 222
تعداد نتایج: 8647 فیلتر نتایج به سال:
. به منظور انتخاب سه لاین خلر، در سال اول (سال 1391) یازده لاین خلر از نظر عملکرد کمی و کیفی علوفه و همچنین عملکرد دانه در قالب طرح بلوک های کامل تصادفی در سه تکرار با یکدیگر مقایسه شدند. در این آزمایش عملکرد و کیفیت علوفه، عملکرد دانه و اجزای عملکرد دانه،تعیین شد. نتایج نشان داد که بیشترین علوفه ترو خشک از لاین l1(sel.eth/299)به دست آمد. لاین l5(sel.b/111) بیشترین عملکرد دانه، بیشترین تعداد غل...
Introduction: Radon-222 gas is a radioactive, colorless and odorless element that can cause lung cancer and stomach in humans with alpha-ray emissions. An important source of Radon-222 is the output water in springs, especially hot springs to emit ionision radiation. In this study, Rn-222 activity concentration and gamma dose rate levels in water sample of some selected hot spr...
تعیین دز موثر دریافتی رادن 222 آب‌های آشامیدنی بسته بندی شده در گروه‌های مختلف سنی؛ شهر تهران، ایران
مقدمه و هدف: رادن222 ماده رادیواکتیو طبیعی با نیمه عمر ۸/۳ روز، بی رنگ و بی بو می‌باشد. مصرف آب‌های حاوی غلظت بالای رادن 222، باعث افزایش دز موثر دریافتی در گروه‌های مختلف سنی و به دنبال آن افزایش شیوع سرطان معده می گردد. مواد و روش ها: در این مطالعه توصیفی مقطعی غلظت رادن 222 در 17 آب بسته بندی شده پر مصرف شهر تهران توسط دستگاه پرتابل رادن سنج مدل RTM1688-2 مورد اندازه گیری قرار گرفت. همچنین د...
A cluster of miR-221/222 is a key player in vascular biology through exhibiting its effects on vascular smooth muscle cells (VSMCs) and endothelial cells (ECs). These miRNAs contribute to vascular remodeling, an adaptive process involving phenotypic and behavioral changes in vascular cells in response to vascular injury. In proliferative vascular diseases such as atherosclerosis, pathological v...
Endothelial microparticles (EMP) are released from activated or apoptotic endothelial cells (ECs) and can be taken up by adjacent ECs, but their effect on vascular inflammation after engulfment is largely unknown. We sought to determine the role of EMP in EC inflammation. In vitro, EMP treatment significantly reduced tumour necrosis factor-α-induced endothelial intercellular adhesion molecule (...
We present the results of a dynamical analysis of three rich, X-ray luminous galaxy clusters, Abell 222, Abell 223 and Abell 520, that are at intermediate redshifts. Our study is based on radial velocities for 71 cluster members, respectively 30 for A 222, 20 for A 223 and 21 for A 520, measured from spectra obtained at the Canada-France-Hawaii Telescope, the European Southern Observatory, and ...
Abnormal increases in radon ((222)Rn, half-life = 3.82 days) activity have occasionally been observed in underground environments before major earthquakes. However, (222)Rn alone could not be used to forecast earthquakes since it can also be increased due to diffusive inputs over its lifetime. Here, we show that a very short-lived isotope, thoron ((220)Rn, half-life = 55.6 s; mean life = 80 s),...
Cutaneous melanoma is the fastest increasing cancer worldwide. Although several molecular abnormalities have been associated with melanoma progression, the underlying mechanisms are still largely unknown and few targeted therapies are under evaluation. Here we show that the HOXB7/PBX2 dimer acts as a positive transcriptional regulator of the oncogenic microRNA-221 and -222. In addition, demonst...
Accumulating evidence demonstrates that the long non-coding RNA Growth Arrest-Specific 5 (Gas5) has practical significance in cancer progression and metastasis. However, its role and function in papillary thyroid carcinoma (PTC) remains unknown. In this study, we aimed to explore the potential involvement of Gas5 in papillary thyroid carcinogenesis and to highlight the emerging roles of ceRNAs ...
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