نتایج جستجو برای: conservation
تعداد نتایج: 101170 فیلتر نتایج به سال:
Background: Among wide range of bio-conservational strategies envisaged, recent accomplishments in the field of somatic cell nuclear transfer (SCNT) holds considerable promise due to its unique potential to decelerate or prevent rapid loss of animal genetic resources, and even to revive extinct species. This study was undertaken to investigate whether domestic sheep in vitro matured and enuclea...
camels have been regarded as the desert ship and they play multi-utility role in the world. estimation of genetic parameters is foremost step towards managing the genetic resources for their conservation and sustainable utilization. microsatellite markers have been extensively used in cattle, sheep, goat and camels. however, genetic characterization studies on camels has been poorly recorded. t...
objective: the main purpose of this research is review of principles, concepts, problems and solutions of soil ethic. methods: in this research by descriptive method and delphi technique was used for identifying soil ethical concepts, soil ethical principles, problems and difficulties of soil ethics in iran and al around the world and suggestions for improvement of soil ethics in iran. the popu...
in recent decades, large investments have been made to introduce soil conservation methods, but most of these efforts have had limited success in achieving the goals. as a result, attempt to identify the factors deterring or promoting adoption of soil conservation practices is important. therefore, this study aimed to investigate factors affecting adoption of soil conservation practices by rain...
soil erosion is one of the most important forms of land degradation that threatens continued and sustained agricultural production in ghana. the most severely affected areas are the three northern regions especially upper east region, where large tracts of land have been destroyed by water erosion leading to soil depth reduction and decline in soil fertility. this study was carried out in talen...
to investigate factors affecting the adoption of conservation tillage systems, the tillage methods utilized by wheat producers in the central darab county are categorized into conventional, reduced-tillage and no tillage systems. for this purpose, multinomial logit model approach using the stata software was applied to the data set collected by random cluster sampling method. the explanatory va...
In creating and continuation of the life of architectural heritage, there have always been numerous aspects influencing; recognizing such aspects is a crucial point in conserving the works of every land. Today, hastened integration of historical countries with modern conserving current has led to a shift in definition and understanding metaphysical aspects of the works within such countries. Si...
festuca karatavica از زیرجنس subg. xanthochloa به عنوان گونه و زیرجنس جدیدی برای فلور ایران از رشته کوههای بینالود در خراسان معرفی می شود. این گونه از نظر ریخت شناسی با نزدیکترین گونه های خویشاوند خود در زیرجنس leucopoa در ایران مورد مقایسه قرار می گیرد. تصویر، نقشه پراکندگی و اطلاعاتی درباره جغرافیای زیستی، وضعیت حفاظتی و زیستگاه آن ارایه می گردد
چکیده ندارد.
background: quality of life (qol) is becoming an important indicator of treatment efficacy in patients with breast cancer. most previous studies have compared patients' qol following breast conserving surgery (bcs) and mastectomy with or without reconstruction. our aim was to assess the impact of bcs versus oncoplastic breast surgery (obs). methods: selection of patients for bcs or obs was perf...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید