نتایج جستجو برای: number of patches
تعداد نتایج: 21178810 فیلتر نتایج به سال:
introduction: diabetes mellitus is an growing national and international public health concern. the number of people affected by diabetes in world by 2030 will be 69% in developing countries. regular physical activity plays a key role in the management of type 2 diabetes melitus, particularly glycemic control. it has been recommended that peoples with type 2 diabetes participate in moderate-int...
A new method to quantify, monitore and assess ecological structures and functions is the application of graph theory. In ecology, this theory demonstrates its suitable application in assessment of ecological connectivity. Connectivity is the structural attribute of landscape which facilitates the species movement among their habitats. Using graph theory, this paper aims to assess the connectivi...
چکیده در بخش اول این پروژه دو روش میکرواستخخرا به نامهای میکرواسخخرا امولسیونی با کمک اموا فراصتتتو 1 و میکرواستتتخخرا مای – مای با کمک هوا 2 ، به عنوان دو روش میکرواستتتخخرا بدون حلال پخشکننده 3 ، برای اسخخرا برخی هیتدروکربتنهای آروماتیتک حلقوی 4 از نمونتههای آبتی بهکار گرفخه و پارامخرهای موثری همچون نوع حلال اسختتتتخرا کننده، حجم حلال اسخخرا کننده، میزان نمک، زمان تابش اموا فراصتو ، تددا...
Peyer's patches are nodules that play a central role in intestinal immunity. Few studies demonstrate the relationship between the number of Peyer's patches and intestinal polyps. Here we identify a statistically significant inverse correlation between the quantity of Peyer's patches and of the development of intestinal polyps in Apc (Min/+) mice, which are a useful model to clarify the role of ...
در سال 2002 هرزوگ و تاکایاما در مقاله resolutions by mapping cone ایدآل جدیدی به نام ایدآل با خارج قسمت های خطی معرفی کردند. این ایدآل خواص جالب توجهی از نظر جبری و از نظر ترکیبیاتی دارد. در این پایان نامه علاوه بر بررسی خواص جبری و ترکیبیاتی این ایدآل ها، همبافت های کزول، همولوژی کزول، مجتمع سادکی و ایدآل هایی که به صورت مولفه ای خطی هستند و ایدآل هایی که به صورت مولفه های خالی از مربع خطی هست...
Large scale land use/cover changes and habitat fragmentation have been associated with the decline of many wildlife populations in ecological sensitive regions. The main goal of this study was to quantify the spatial pattern changes in Caucasian Black Grouse habitat in Arasbaran Biosphere Reserve, Northwest of Iran in a period of 24 years (1987–2011). Caucasian black grouse (Tetrao mlokosiewicz...
Self-affine maps were successfully used for edge detection, image segmentation, and contour extraction. They belong to the general category of patch-based methods. Particularly, each self-affine map is defined by one pair of patches in the image domain. By minimizing the difference between these patches, the optimal translation vector of the self-affine map is obtained. Almost all image process...
Habitats have dramatically destructed worldwide.However a growing trend is emerging for restoring habitatats. One of the most effective approach to revitalize them is to restore the conditions that have lost. Studies indicate high probability of local extinction of Maral (Cervus elaphus maral) in the current habitats of Gilan due to severe habitat destruction. The current study aimed to introdu...
We introduce a model for the dynamics of a patchy population in a stochastic environment and derive a criterion for its persistence. This criterion is based on the geometric mean (GM) through time of the spatial-arithmetic mean of growth rates. For the population to persist, the GM has to be >/=1. The GM increases with the number of patches (because the sampling error is reduced) and decreases ...
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