نتایج جستجو برای: natural hybrid
تعداد نتایج: 665408 فیلتر نتایج به سال:
BACKGROUND AND OBJECTIVE We are sharing information regarding the surveillance of the first entrance port in laparoscopic and natural orifice transvaginal endoscopy surgeries. However, we are not analyzing techniques or other surgical findings. METHOD In this study, 160 women with previous abdominal pelvic surgeries underwent laparoscopic surgery, 145 patients underwent transvaginal Minilapar...
The reconstruction of reticulate evolutionary histories in plants is still a major methodological challenge. Sequences of the ITS nrDNA are a popular marker to analyze hybrid relationships, but variation of this multicopy spacer region is affected by concerted evolution, high intraindividual polymorphism, and shifts in mode of reproduction. The relevance of changes in secondary structure is sti...
While analyzing wild mosquitoes caught in Paju, South Korea, we identified one egg-laying hybrid female between Anopheles kleini and Anopheles sinensis. Additional evidence was obtained by identifying several F(1) progeny and conducting self-crossing between them. Sequencing of mitochondrial cytochrome c oxidase subunit 1 sequence suggested that the maternal origin of the female should be An. s...
Engineering a cell-based keratoprosthesis often requires a struggle between two essential parameters: natural 3-D biological adhesion and mechanical strength. A novel hybrid scaffold of natural and synthetic materials was engineered to achieve both cell adhesion and implantable strength. This scaffold was characterized in terms of cell adhesion, cell migration, swelling, and strength. While the...
Hybrid systems are systems that display both discrete and continuous behavior and, therefore, have the ability to model a wide range of robotic systems such as those undergoing impacts. The main observation of this paper is that systems of this form relate in a natural manner to very special diagrams over a category, termed hybrid objects. Using the theory of model categories, which provides a ...
جریان سیال در بیشتر مسائل مهندسی بصورت متلاطم صورت می گیرد. بنابراین مطالعه تلاطم و بررسی مشخصات جریانهای متلاطم از اهمیت خاصی برخوردار است . در گذشته نه چندان دور مطالعات در این زمینه تماما بصورت تجربی و آزمایشگاهی بوده است اما امروزه، استفاده از متدهای محاسباتی توسعه پیدا کرده است بطوری که می رود تا جایگزین قسمت اعظمی از مطالعات مدلی و روشهای تجربی شود. در این تحقیق مشخصات جریان متلاطم با تقا...
The aim of this study is to compare the metallic and natural fiber reinforced polymer composite bone plates used in humerus fractures. A 3D finite element model was developed to analyze the performance of both types of plates. This study proposed on fabrication of natural fiber powdered material (like Sisal (Agave sisalana), Banana (Musa sapientum) and Roselle (Hibiscus sabdariffa)) Reinforced ...
Design and operation of an extended hybrid ventilation system are fully investigated in this study through an example building. Tools of genetic algorithm optimization, computer fluid dynamics and energy simulation are employed to assist the process. The objective is to maximize natural ventilation while maintain good indoor thermal and air quality. The dynamic operation of vents is based on wi...
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