نتایج جستجو برای: 3 oil
تعداد نتایج: 1932676 فیلتر نتایج به سال:
abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
کرچک (ricinus communis l.) یکی از مهمترین گیاهان دارویی مورد استفاده در صنایع داروسازی، آرایشی و بهداشتی بیشتر کشورهای توسعه یافته است. روغن بدست آمده از دانه های این گیاه جزء با ارزش ترین مواد مسهل و ملین در پزشکی می باشد. فاکتورهای اقلیمی بویژه عرض جغرافیایی، ارتفاع محل، درجه حرارت، شدت نور، بارندگی و خصوصیات خاک، تاثیر عمده ای بر کمیت و کیفیت مواد موثره می گذارد. به منظور مطالعه تاثیر اقلیم ...
in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...
توجه به سامانه های نوین دارو رسانی در صنایع همزمان با عرضه داروهای با منشا بیوتکنولوژی آغاز شد. سامانه های دارو رسانی تراپوستی در حال حاضر یک جایگزین مناسب برای سامانه های دارو رسانی خوراکی و تزریقی هستند. هدف از این تحقیق بررسی تاثیر ترکیب فرمولبندی سامانه ریزامولسیونی دسموپرسین استات بر روی مقدار تجمعی داروی آزاد شده و شدت عبور پوستی دسموپرسین استات است. اجزای ریزامولسیون ها شامل: ترکیب تویین...
Many components use oil quenching to achieve consistent and repeatable mechanical and metallurgical properties and predictable distortion patterns. The reason oil quenching is so popular is due to its excellent performance results and stability over a broad range of operating conditions. Oil quenching facilitates hardening of steel by controlling heat transfer during quenching, and it enhances ...
T here are good and bad fats. The Omega-3 is considered to be a good fat 1. Omega-3 fatty acids are considered essential fatty acids, which means that they are essential to human health but cannot be manufactured by the body. For this reason, omega-3 fatty acids must be obtained from food. Omega-3 fatty acids can be found in ¿ sh and certain plant oils and hence are the primary dietary source o...
Milk was collected from 20 primiparous Holstein cows that were distributed into four groups and arranged in a completely randomized design with a 35-day period to determine the effect of feeding fish oil, soybean oil, or their combination on milk production and composition. Experimental diets consisted of: 1) control diet; 2) a diet with 3% (DM basis) added fat from menhaden fish oil; 3) a diet...
the quest for power has formed much of the world history especially in 20th and 21st centuries. oil (energy) particularly after industrial revolution has been a tool for conquest and power and has been transformed to a geopolitical issue. from a geopolitical point of view this has been the case for the last two centuries in central asia and caucasus. central asia and caucasus has always been...
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