نتایج جستجو برای: آزمون tunel
تعداد نتایج: 126298 فیلتر نتایج به سال:
آلیاژهای منیزیم معمولاً دارای عدم تقارن تسلیم در حالت کشش و فشار هستند که این عامل ناشی از سازوکارهای مختلف تغییر شکل پلاستیک فعال تحت بارگذاریهای کششی فشاری است. مقاله بر روی شبیهسازی المان حجمی نمایندهی سهبعدی آلیاژ اکسترود شده تمرکز دارد تا با کمک روابط کریستال پلاستیسیته تأثیر شدت بافت پایه ـ را بررسی کند. پلاستیسته مبتنیبر لغزش بهصورت یک زیربرنامه نرمافزار آباکوس (UMAT) برای آزمون...
The electrophoresis pattern of apoptotic cells detected by the comet assay has a characteristic small head and spread tail. This image has been referred to as an apoptotic comet, but it has not been previously proven to be apoptotic cells by any direct method. In order to identify this image obtained by the comet assay as corresponding to an apoptotic cell, the frequency of appearance of apopto...
AIM Lupus nephritis is closely associated with in vivo autoantibody-binding to glomerular membrane-associated electron-dense structures (EDS). The biochemical nature and cellular origin of EDS are controversial, and definitive characterisation needs to be performed. METHODS By using the terminal transferase biotin-dUTP nick end-labelling (TUNEL) assay at the electron microscopic level, we hav...
The purpose of the study was to examine the occurrence of programmed cell death (apoptosis) in normal and chromosomally aneuploid testis and ovaries during the second trimester of human development. Such information may be useful in understanding normal and abnormal germ cell development and disorders associated with infertility in adult life. Apoptosis was studied by terminal deoxynucleotidyl ...
Apoptosis is an important mode of cell death under both physiological and pathophysiological conditions. Numerous techniques are available for the study and quantitation of apoptosis in cell culture, but only few are useful when applied to complex tissues. Among these, the terminal transferase-mediated dUTP nick end-labeling (TUNEL) assay remains the most widely used technique. However, its spe...
The ability to detect nuclear damage is an important tool for the development of sperm preservation methods. We used the acridine orange test (AOT) and the terminal deoxynucleotidyl transferase-mediated dUDP nick-end labeling (TUNEL) assay to assess the DNA status of sperm cells preserved with different lyophilization media. The AOT did not detect any differences between different lyophilizatio...
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