نتایج جستجو برای: morphological
تعداد نتایج: 126949 فیلتر نتایج به سال:
چشمه های آب گرم در سال های اخیر از سوی زیست شناسان بسیار مورد توجه واقع شده اند. سیانوباکتری های ترموفیل بدلیل شباهت با فرم های زندگی اجدادی در زمین و همچنین به عنوان منبعی از ترکیبات زیستی پایدار در برابر گرما، از ارزش علمی بالایی برخوردار هستند، و بررسی تنوع زیستی آنها گام مفیدی در جهت رسیدن به اهداف ذکر شده می باشد. در این تحقیق سیانوباکتری های موجود در 4 چشمه ی آب گرم در ایران مورد مطالعه ق...
rapid exploratory field survey, to identify indigenous chicken ecotypes was conducted in north gondar zone of ethiopia. chicken ecotypes including necked neck, gasgie and gugut from quara, alefa and tache armacheho districts were identified, respectively. morphological variations among the three study populations and nine measurable traits were evaluated. general linear model, canonical discrim...
21 تاکسون شامل 18 گونه calligonum و 3 گونه pteropyrumبعنوان درون گروه به اضافه 2 گونه از atraphaxis، بعنوان برون گروه با استفاده از30 صفت ریخت شناسی مورد مطالعه قرار گرفتند. در هر دو آنالیز بدون وزن دهی و با وزن دهی (توسط شاخص سازگاری تصحیح شده)، calligonum و pteropyrum تشکیل کلاد مجزا داده اند. هر دو بخشه pterococcus و) calligonum شامل بخشه تک گونه ای (calliphysa از جنس calligonum تک تبارند....
the human facial recognition is the base for all facial processing systems. in this work a basicmethod is presented for the reduction of detection time in fixed image with different color levels.the proposed method is the simplest approach in face spatial localization, since it doesn’trequire the dynamics of images and information of the color of skin in image background. inaddition, to do face...
We discuss a definition of Morphological Cellular Neural Networks (MCNN) where the state change operator are Auto-associative Morphological Memories (AMM). The fast convergence properties of AMM and the shape of its fixed point set make the MCNN dynamics trivial. However, segmentation results are poor. We propose a Morphological Cellular Automata (MCA) with assured convergence to a state charac...
Having knowledge about genetic relationships among accessions is necessary for developing breeding strategies to produce improved cultivars. In present study, genetic diversity and inter-relationship among 29 genotypes of citrus were comparatively analyzed using morphological and RAPD markers. Significant variability was observed among citrus genotypes for 61 quantitative and qualitative morpho...
The genus Crataegus L. has a wide distribution in Iran. Induviduals of Crataegus meyeri Pojark. show morphological variations in different regions. In this research, the effects of climatic variations on morphological traits of C. meyeri were studied. Seventy five specimens collected from nine provinces of Iran were measured in two sets of quantitative and qualitative traits. Statistical analys...
the skill of reading in english as a foreign language is an important and challenging one which is affected both by linguistic and extra linguistic factors. since vocabularies are part and parcel of every reading comprehension text, knowing enough vocabulary always facilitates this process. however, guessing strategy as one of the most important strategies has consistently ignored by language l...
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