نتایج جستجو برای: conservation

تعداد نتایج: 101170  

Journal: :acta medica iranica 0
"ghalibafian m haddad p dehshiri k "

breast conservation surgery combined with radiation therapy is now an accepted option for the treatment of early breast cancer. so we decided to evaluate the results of such treatment in our first group of patients treated by this method. from 1992 to 1996 , one hundred patients with stage i and ii breast cancer treated with breast conservative surgery (lumpectomy or quadrantectomy). were irrad...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده معماری و شهرسازی 1387

چکیده ندارد.

Journal: :international journal of aquatic biology 0
bahram falahatkar fisheries department, faculty of natural resources, university of guilan, iran. ali safarpour amlashi departments of fisheries, faculty of marine science, tarbiat modares university, noor, iran. soheil eagderi department of fisheries, faculty of natural resources, university of tehran, iran. hamed mousavi-sabet department of fisheries sciences, faculty of natural resources, university of guilan, someh sara, guilan, iran.

alburnus chalcoides , caspian shemaya, is found in the river systems of the aral, black and caspian sea basins and is an economically valuable cyprinid from the southern caspian sea. this species has been reported as near threatened species in this basin due to damming, over and illegal fishing, destruction of its spawning grounds and water pollution. the caspian shemaya is an important species...

Journal: :محیط شناسی 0
آزاده مهری کارشناس ارشد محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان عبدالرسول سلمان ماهینی دانشیار گروه محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان سید حامد میرکریمی استادیار گروه محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان حمیدرضا رضایی استادیار گروه محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان

introduction several methods have been developed to aid in selecting a network of biodiversity protected areas. one of these methods is artificial intelligence which includes a number of different computer algorithms that use an objective function to find the best solution. an algorithm is a mathematical process or a set of rules used for problem solving. recently, site selection algorithms hav...

ژورنال: مدیریت شهری 2016
Ahmadi , Hossein , Shirvani , Maryam , Vatandoust, Rasool ,

According to the non-physical aspects of conservation in the world today and intangible effects were considered serious. Conservation process, but help to understand the purpose and effect of not reading, but perception is a matter of epistemological roots in philosophy and  in modern philosophy the process of understanding a monument-art conservation in connection with the audience is importan...

Journal: :international journal of agricultural science, research and technology in extension and education systems 2014
christopher tafara gadzirayi never mafuse vincent munyati

the study sought to explore approaches for co-creation of conservation agriculture (ca) knowledge amongst farmers, nongovernmental organizations (ngos), government and specialist researchers. the aim of the study was to explore farmer initiated food security strategies among small holder resource poor farmers, through enhancement of farmers’ own productive capacity. the study was born out of th...

Prioritization and selection of sample areas from the whole nature is necessary to protect biodiversity. The main purpose of this study was to evaluate the development of a network of conservation areas in Markazi province using landscape metrics. For this purpose, we used MaxEnt, Marxan, Fragstat softwares and eight conservation criteria. Results were compared by using simulated sorting, greed...

2004
Monique Borgerhoff Mulder

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In this paper, Heir-equations method is applied to investigate nonclassical symmetries and new solutions of the Black-Scholes equation. Nonlinear self-adjointness is proved and infinite number of conservation laws are computed by a new conservation laws theorem.

Journal: :caspian journal of enviromental sciences 0

different species of gazelles are among the most endangered mammals on the asian steppes and occur in the central, southern and northwestern regions of iran. the previous conservation efforts in this region have been incomplete due to confusion about the phylogenetic relationship among various populations. so that, different conservation programs such as ex-situ breeding and transfer of captive...

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