نتایج جستجو برای: big bubble
تعداد نتایج: 86773 فیلتر نتایج به سال:
هدف: ارزیابی نتایج بینایی بیماران مبتلا به قوز قرنیه که با روش Big Bubble (BB) تحت عمل پیوند لایهای عمیق قرنیه (DALK) قرار گرفتند. روش تحقیق: در این مطالعه مجموعه موارد مداخلهای، بیماران مبتلا به قوز قرنیه متوسط تا شدید که اختلال بینایی آنان با عینک قابل اصلاح نبود و یا به علت عدم تحمل لنز تماسی قادر به استفاده از آن نبودند، تحت عمل DALK به روش BB قرار گرفتند. قرنیه دهنده بدون لایه دسمه ب...
Material and Methods: Seventeen eyes of seventeen patients with advanced keratoconus who underwent DALK using Anwar's big bubble technique with1 year postoperative follow up were included in study. Uncorrected and corrected distant visual acuities (UDVA, CDVA, snellen acuity converted to logMAR notation), spherical equivalent SE (Diopters D)], refractive astigmatism [(Ast, D)], slit lamp biomic...
Given an array with n elements, we want to rearrange them in ascending order. Sorting algorithms such as the Bubble, Insertion and Selection Sort all have a quadratic time complexity that limits their use when the number of elements is very big. In this paper, we introduce Merge Sort, a divide-andconquer algorithm to sort an N element array. We evaluate the O(NlogN) time complexity of merge sor...
Two qualitatively different modes of ending superluminal expansion are possible in extended inflation. One mode, different from the one envoked in most extended models to date, easily avoids making big bubbles that distort the cosmic microwave background radiation (CMBR). In this mode, the spectrum of density fluctuations is found to be scale-free, P (k) ∝ k, where n might lie anywhere between ...
The common phenomenon of buoyancy-induced vapor bubble lift-off from a heated surface is of importance to many areas of science and technology. In the absence of buoyancy in zero gravity of space, non-departing bubbles coalesce to form a big dry patch on the heated surface and heat transfer deteriorates despite the high latent heat of vaporization of water. The situation is worse on an inverted...
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