نتایج جستجو برای: مدل rf
تعداد نتایج: 153956 فیلتر نتایج به سال:
اثر زمان انباشت در تغییر ساختار نانوذرات نقره ساخته شده در بستری از کربن شبه‌الماسی به روش RF-PECVD
Silver nanoparticles embedded in DLC matrix, were prepared by co-deposition of RF-Sputtering and RF-PECVD method from acetylene gas and sliver target. The RF power and initial pressure of chamber were fixed. Variations of morphology, optical and electrical properties of these films over time were investigated
Abstract Background: Rheumatoid Arthritis, (RA) is a chronic inflammatory autoimmune disease with a progressive course requiring early diagnosis and treatment. The value of anti-cyclic citrullinated peptide antibodies (Anti-CCP) in the diagnosis of RA has been shown in several studies. The present study was designed to determine and compare the diagnostic value of Anti-CCP and rheumatoid fac...
Objective(s): Nowadays, the electromagnetic field-emitting devices are used routinely in our lives. Controversial reports exist concerning the effects of mobile radiofrequency (RF) on different parts of the body, especially stress hormones. The main goal of the present work was to study the long-term effects of mobile RF900 MHz exposure with special focus on the adrenal gland pathophysiology an...
Total IgM, IgA, and IgM-rheumatoid factor (RF) and IgA-RF were quantitated in the serum and synovial fluid of 35 seropositive and 8 seronegative rheumatoid arthritis (RA) patients, using a sensitive enzyme-linked immunosorbent assay (ELISA). Mononuclear cells isolated from peripheral blood and synovial fluid of three seropositive patients were also stimulated in vitro with phorbol myristat...
چکیده مطالعهqsar سه بعدی بر روی 2-آریل بنزوکسازول به عنوان بازدارنده های cetp انجام گرفت و روش های comfa، comfa rf وcomsia برای تعیین فاکتورهایی که در بروز فعالیت در این ترکیبات ضرورت دارد مورد استفاده قرار گرفت. در این مطالعه مولکول ها با روش های استاندارد در نرم افزار sybyl بهینه سازی انرژی بر روی آنها انجام شد و روشdistil به عنوان روش نهایی برای تراز کردن مولکول ها در نظر گرفته شد. بهترین ج...
accessory pathways (ap) are abnormal myocardial connections between atria and ventricles with electrical conductive properties. we performed radio frequency (rf) catheter ablation in 66 patients with manifest ap at dr.shariati hospital during 5 years. bipolar mapping was used in 48 patients and unipolar mapping in 18 patients of find the best site for rf energy delivery. we calculated total dur...
the computation of structural failure probability is vital importance in the reliability analysis and may be carried out on the basis of the first-order reliability method using various mathematical iterative approaches such as hasofer-lind and rackwitz-fiessler (hl-rf). this method may not converge in complicated problems and nonlinear limit state functions, which usually shows itself in the f...
Rheumatic fever (RF) is a prevalent healthcare problem in the developing countries. Recurrence of this disorder is often observed in childhood and adolescence. RF can mimic the presentations of infective endocarditis, and clinicians are not really familiar with this issue. Herein, we present a case of recurrent acute rheumatic fever in a patient suspicious of acute bacterial endocarditis due to...
مقدمه: در سال های اخیر کاربرد امواج الکترومغناطیس در زندگی انسان به صورت بی رویه افزایش یافته است. بر اساس آمار در سال 2012 بیش از چهار بیلیون مشترک تلفن همراه وجود دارد، بنا بر این نیاز ضروری برای انجام تحقیقات گسترده به منظور بررسی و ارزیابی اثرات بیولوژیکی امواج الکترومغناطیسی وجود دارد. مواد و روش ها: مطالعات آزمایشگاهی اثرات امواج بر بافت های بیولوژیکی در شرایط کنترل شده آزمایشگاهی به مطال...
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