نتایج جستجو برای: شاخص mbe
تعداد نتایج: 76393 فیلتر نتایج به سال:
Using a dual Molecular Beam Epitaxy (MBE)-Pulsed Laser Deposition (PLD) Ultra-High Vacuum chamber, we have conducted the first experiments under identical thermal, background, and surface preparation conditions to compare Ge(001) homoepitaxial growth morphology in PLD and MBE. We find that in PLD with low kinetic energy and in MBE the film morphology evolves in a similar fashion: initially irre...
Meiotic cell-cycle progression in progesterone-stimulated Xenopus oocytes requires that the translation of pre-existing maternal mRNAs occur in a strict temporal order. Timing of translation is regulated through elements within the mRNA 3' untranslated region (3' UTR), which respond to cell cycle-dependant signalling. One element that has been previously implicated in the temporal control of mR...
A total of ninety seven pre-pubertal Bunaji (BJ) and Friesian-Bunaji (FR x BJ) heifers were allotted randomly to two treatments groups for a period of 15 months. The treatment groups consisted of the followings: Mature Bull Exposure (MBE) and No Bull Exposure (NBE). Heifers were body condition scored and their live weights recorded on 28 days consecutive intervals. A heifer tactile stimulation ...
این پژوهش بهمنظور ارائه مدلی برای تهیه نقشه شوری با استفاده از چند شاخص طیفی و دادههای ماهوارهای لندست پنج در مناطق خشک بوشهر، سمنان، فارس، کرمان و هرمزگان انجام شد. ابتدا نمونهبرداری از افق شناسایی سطحی (0-30 سانتیمتری) خاک به تفکیک هر منطقه در استان به تعداد 50 تا 100 نمونه برداشت و به آزمایشگاه ارسال شد. سپس بهمنظور شناسایی و ارزیابی شوری خاک، از تلفیق تصاویر ماهوارهای لندست پنج و پار...
A fast Monte Carlo simulator with a graphical user interface is an ideal education tool for students learning about molecular beam epitaxy (MBE). This paper discusses the implementation of such a simulator, as well as simulation techniques that may be used to tailor surfaces. Simulations carried out on the learning tool show how MBE can recover step-flow growth, in addition to the temperature d...
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