نتایج جستجو برای: based vs production
تعداد نتایج: 3617633 فیلتر نتایج به سال:
Replacing dietary grass silage (GS) with maize silage (MS) and dietary fat supplements may reduce milk concentration of specific saturated fatty acids (SFA) and can reduce methane production by dairy cows. The present study investigated the effect of feeding an extruded linseed supplement on milk fatty acid (FA) composition and methane production of lactating dairy cows, and whether basal forag...
The Kyoto protocol has defined the accounting framework for industrial GHG emissions on production-based accounting. Since then, international negotiations of Climate Change did not make significant progress on new GHG emissions ceiling. For numerous non-Annex 1 countries, an accounting framework based on consumption would be advantageous and could help in international negotiations. Similarly,...
this study investigated how group formation method, namely student-selected vs. teacher-assigned, influences the results of the community model of teaching creative writing; i.e., group dynamics and group outcome (the quality of performance). the study adopted an experimental comparison group and microgenetic research design to observe the change process over a relatively short period of time. ...
in this thesis protic and aprotic ammonium-based ionic liquids were synthesized and their surface tensions were measured in the range of 298-373k. the protics are alkyl ammonium-based ils with the carboxylate (formate, acetate, propionate) anion and aprotics are quaternary ammonium-based ils with bis(trifluoromethylsulfonyl)imide anion. capillary rise method was used for surface tension measure...
the major aim of this study was to compare the morphology and activity of rumen protozoa of khuzestan water buffalo and holstein cow using in vitro digestibility and gas production parameters of steam treated sugarcane pith. rumen fluid obtained from two buffalo and cow steers fed the same diet, 30:70 concentrate: forage. to separate rumen protozoa, antibiotic solution and fungicides were added...
تولید بیوگاز از فضولات دامی یکی از روشهای مهم تولید انرژی از منابع تجدید پذیر است و یکی از روش های کاهش تولید گازهای گلخانه ای و حفاظت از محیط زیست محسوب می شود. در این تحقیق اثرات دما، ph، cod و نوع بیومس در طی 18 روز در یک هاضم بی هوازی با ساختمان ساده و بدون همزن بر روی بیوگاز تولیدی بررسی گردید. مطالعه آزمایشگاهی اثر دما بر میزان بیوگاز تولیدی از فضولات گاوی در 7=ph و 3/14ts= اولیه ثابت در ...
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