نتایج جستجو برای: production engineering
تعداد نتایج: 850168 فیلتر نتایج به سال:
Introduction: Escherichia coli (E.coli) is one of the most widely used hosts for the production of recombinant proteins. The main problem in getting high product yields and productivity is the accumulation of acetic acid (acetate) as an unwanted metabolic by-product. In this study, an antisense-based strategy as a metabolic engineering approach was employed to hamper the acetate excretion probl...
Studying the Spicery Situation in West Azerbaijan Cities with Emphasis on the Problems and Challenges Ahead Masoomeh Amerian 1*, Afsaneh Malekhoseini 2, Shahriban Sore 3 1Assistant Professor, Department of Production Engineering and Plant Genetics, Faculty of Science and Agriculture Engineering, Razi University, Kermanshah, Iran 2Ph.D. in Agricultural Development, Department of Agricultural E...
the purpose of the present study was to investigate the effect of task-based instruction of vocabulary on the receptive and oral productive acquisition of english vocabulary and compare the results with those obtained from the traditional method. the method and procedure applied in this study was as follows: after the implementation of opt, a group of sixty female students were chosen. the stu...
background : in recent years tissue engineering developed to replace or repair damaged tissues using cell and biomaterial. one of the most important fields of tissue engineering is simulation of in vivo micro environment of body tissues. this study aimed to develop culture chamber and cell biomaterial sheet engineering for the reconstruction of cartilage tissue. methods : stainless steel cultur...
J. Mula CIGIP (Research Centre on Production Management and Engineering) Polytechnic University of Valencia Plaza Ferrándiz y Carbonell, 2 03801 Alcoy (Alicante) [email protected] R. Poler CIGIP (Research Centre on Production Management and Engineering) Polytechnic University of Valencia Plaza Ferrándiz y Carbonell, 2 03801 Alcoy (Alicante) [email protected] J.P. García-Sabater CIGIP (Resear...
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. ...
A Visual BasicTM software program, PACCS, was developed to aid NASA engineers plan, design, and operate biomass production components for Advanced Life Support Systems. PACCS integrates mathematical crop models of simulated controlled environment hydroponic production of wheat, soybean, and white potato with scheduling and analysis tools. Analysis options allow for studies on the feasibility of...
Our ability to modify whole animal genetics has grown considerably in the last two decades. We have seen concerns regarding food safety and protection of breeding rights of genetically modified animals compel redirection of genetic engineering experimentation toward biomedical applications. Indeed, it has been nearly twenty years since the first transgenic livestock appeared in the literature, ...
Economic and geopolitical factors (high oil prices, environmental concerns, and supply instability) have been prompting policy-makers to put added emphasis on renewable energy sources. For the scientific community, recent advances, embodied in new insights into basic biology and technology that can be applied to metabolic engineering, are generating considerable excitement. There is justified o...
Efficient fermentation of hemicellulosic sugars is critical for the bioconversion of lignocellulosics to ethanol. Efficient sugar uptake through the heterologous expression of yeast and fungal xylose/glucose transporters can improve fermentation if other metabolic steps are not rate limiting. Rectification of cofactor imbalances through heterologous expression of fungal xylose isomerase or modi...
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