نتایج جستجو برای: steppic rangelands of ardebil over nine years 1999

تعداد نتایج: 21240741  

2013
Rebecca Chaplin-Kramer Melvin R. George

The San Francisco Bay Area in California, USA is a highly heterogeneous region in climate, topography, and habitats, as well as in its political and economic interests. Successful conservation strategies must consider various current and future competing demands for the land, and should pay special attention to livestock grazing, the dominant non-urban land-use. The main objective of this study...

2011
SAMUEL D. FUHLENDORF DAVID M. ENGLE

Rangelands are the most common form of terrain WE PROPOSE A PARADIGM THAT in both the United States (where it accounts for 61% of all land surface) and the world (70% of all land surface). ENHANCES HETEROGENEITY Rangelands consist primarily of native plant communities managed, typically, for livestock production (Holechek et al. INSTEAD OF HOMOGENEITY TO PROMOTE 1998). Because they can embrace ...

Journal: :مرتع و آبخیزداری 0
فضل الله احمدی میرقائد دانشجوی کارشناسی ارشد محیط زیست، دانشکدة منابع طبیعی، دانشگاه کردستان بابک سوری استادیار گروه محیط زیست، دانشکدة منابع طبیعی، دانشگاه کردستان مهتاب پیر باوقار استادیار گروه جنگل داری، دانشکدة منابع طبیعی، دانشگاه کردستان

rangelands are among the natural resources which have a considerable effect on environment and man’s life. iranian rangelands mostly have poor condition and exhausted by intensive over grazing, should be utilized according to their ecological capability and land suitability. the main objective of this study is to evaluate ecological capability and land suitability of gheshlagh dam’s watershed a...

Journal: :Sustainability 2021

Carbon farming has expanded in Australia’s rangelands over recent years, incentivised under the Australian Government’s Emissions Reduction Fund. While this largely been driven by economic benefits for landholders, long-term viability of carbon industry depends on its ability to obtain and maintain a social licence operate affected communities. Using combination survey, interview focus group me...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1390

abstract ion selective electrodes (ises) are electrochemical sensors that respond selectivity to the activity of ionic species. an ion-selective electrode is an electrochemical device that uses a thin selective membrane or film as the recognition element, and is an electrochemical half-cell equivalent to other half-cells of the zeroth (inert metal in a redox electrolyte). in common methods o...

Journal: :علوم دامی ایران 0
شهربانو فدایی پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کارشناسی ارشد حسین ارزانی پردیس کشاورزی و منابع طبیعی دانشگاه تهران، عضو هیأت علمی حسین آذرنیوند پردیس کشاورزی و منابع طبیعی دانشگاه تهران، عضو هیأت علمی غلامعلی نهضتی پردیس کشاورزی و منابع طبیعی دانشگاه تهران، عضو هیأت علمی سید حسن کابلی پردیس کشاورزی و منابع طبیعی دانشگاه تهران، عضو هیأت علمی منصوره امین زاده دانشگاه ارمنستان، دکتری

the presence of nectar-and pollen- bearing plants as vegetative cover in rangelands can provide the ground for job opportunities in the context of beekeeping as an aspect of rangelands' multipurpose uses. beekeeping, as an approach, based upon indigenous knowledge, is suggested to create jobs, and to somehow compensate for the animal husbandry's diminishing income (the fall of income ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1382

‏‎the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...

Journal: :British medical journal 1978
M F Waters R J Rees J M Pearson A B Laing H S Helmy R H Gelber

Over 100 patients with lepromatous leprosy were treated with rifampicin in a series of pilot, uncontrolled, and controlled trials in 1968-77. The rapid bactericidal effect of rifampicin on Mycobacterium leprae was confirmed. Clinical improvement became apparent sometimes as early as 14 days after the start of treatment. Nevertheless, a few persisting viable M leprae were detected as long as fiv...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه مواد و انرژی - پژوهشکده سرامیک 1392

thermal barrier coatings (tbcs) are used to provide thermal insulation to the hot section components of gas turbines in order to enhance the operating temperature and turbine efficiency. hot corrosion and thermal shocks are the main destructive factors in tbcs which comes as a result of oxygen and molten salt diffusion into the coating. in this thesis atmospheric plasma spraying was used to dep...

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