نتایج جستجو برای: response surface models
تعداد نتایج: 2353723 فیلتر نتایج به سال:
باکتری kocuria sp. asb 107 به طور بالقوه توانایی تولید مقدار نسبتاً زیادی آنزیم کاتالاز را دارا می باشد. کاتالاز این باکتری در شرایط قلیایی فعال تر است و این نوع کاتالاز در صنایع مختلف نظیر صنعت نساجی کاربرد ویژه ای دارد. در بیوتکنولوژی صنعتی کاهش هزینه ی تولید محصول مورد نظر در کوتاه ترین زمان ممکن اهمیت دارد.باکتری kocuria sp. asb 107 به طور طبیعی دارای فاز تأخیر طولانی مدت است و همین امر تولی...
nowadays biodiesel is receiving more attention as a most important renewable energy for using in diesel engines. inthis research, the application of response surface methodology (rsm) was highlighted to investigate the effects of biodiesel-diesel blends (b0, b20, b50 and b100), engine operating parameters (engine load and speed) on co2 emission of a diesel engine. the experiments were conducte...
اکسیدهای نیتروژن نقش بسیار مهمی در فرآیندهای فتوشیمیایی تخریب اوزون در لایه های میانی تا بالایی اتمسفر ایفا می کند.افزایش روز افزون مصرف انرژی و سوخت های فسیلی به همراه خطرات جدی آلاینده هایnox و sox مطالعات کنترل تولید، انتشار و حذف آنها را برمی تابد. فرایند کاهش کاتالیستی انتخابی یکی از موثرترین روش های کاهش آلاینده های اکسید نیتروژن به ترکیبات زیست سازگار مانند آب و نیتروژن می باشد. اساس کا...
agar is a gelling biopolymer that can be extracted from cell wall of some red algae. in this present, response surface methodology was used to investigate the procedure of agar melting point and gelling temperature from cultural algae of gracilariopsis persica. independent variables, alkalinity concentration (2, 3.2, 5, 6.8, -8%), extraction temperature (90, 96, 105, 114, 120°c) and extraction ...
This paper proposes a new intelligent approach for solving multi-response statistical optimization problems. In most real world optimization problems, we are encountered adjusting process variables to achieve optimal levels of output variables (response variables). Usual optimization methods often begin with estimating the relation function between the response variable and the control variab...
Deleterious effect of high concentration fluoride in water resources on the healthof human. The MgO supported Fe-Co-Mn nanoparticles were produced via coprecipitationmethod and characterized by SEM and FTIR techniques. In the work,the adsorption process optimization was performed by response surface modelingwith the help of Minitab 16 software. The effect of independent ...
The efficient planning of each system requires an understanding of the true nature of the system. Regression models also represent a system that its input variables, the role of the system input, its variables coefficients, the role of the system process, and its response variables, play the role of the system output. Therefore, for exact regression modeling and efficient planning, it's essenti...
Surface runoff is one of the main causes of erosion and loss of soil fertility, sedimentation in reservoirs and reduction of river water quality. Therefore, the accurate prediction of basin response to precipitation events is very important. Hydrological models are simplified views of the actual watershed systems that can help study watershed functions in response to various inputs, and underst...
background: car wash waste water contains several contaminants such as organic matter, oil, grease, detergents and phosphates, all of which are harmful for the environment. in this study, the application of electrocoagulation (ec) to treat car wash waste water has been studied, and the operating parameters optimized. the electro-fenton (ef) for further contaminant removal was also investigated....
an efficient method was employed for the ash and pyrite sulphur removal from bitumen using column flotation process. the bitumen samples containing 9.6% sulphur (6.81% in the pyrite sulphur form) and 26.4% ash were successfully showed up to 75.20% of pyrite sulphur (e.g.; 51.66% of total sulphur) and 70.81% of ash removal. the box-behnken design (bbd) was employed to design the experiments, to ...
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