نتایج جستجو برای: threshing and separation process
تعداد نتایج: 16936247 فیلتر نتایج به سال:
タンパク質のPEG化は安定性を向上することが知られているが,反応制御は難しく,複数の修飾異性体が生成する.これらの修飾体の分離には,イオン交換クロマトグラフィー(IEC)が用いられる.タンパク質に対して構築されたIECの分離機構モデルをPEG化タンパク質に適用することができれば,分離条件を合理的に決定可能となる.このためmono-PEG修飾体としてPEG化BSAを,random-PEG修飾体としてPEG化lysozymeを用い,それらの溶出時の塩濃度勾配と溶出塩濃度を,機構モデルを用いて解析した.いずれのPEG修飾体においてもモデルの適用が可能であり,担体上の結合部位の数は未修飾のものとほぼ同じ値をとることがわかった.また,機構モデルから算出される分配係数に基づき,移動相塩濃度を設定すると,PEG化と同時にカラムから反応生成物を脱離させることや,リサイクル型の連続反応分離操作も可能で...
in this study, different methods of separating of the microalgae from the culture medium as one of the most important and expensive steps in achieving commercial production of biodiesel from microalgae was investigated. electro coagulation-flotation (ecf) was preferred among these methods due to its process simplicity and capability to scale up. the effect of three parameters, i.e., initial ph,...
This paper characterizes the equilibrium demand and risk premiums in the presence of skewness risk. In a model with a single time period, we extend the classical mean-variance two-fund separation theorem to a three-fund separation theorem. The additional fund is the skewness portfolio, i.e. a portfolio that gives the optimal hedge of the squared market return; it contributes to the skewness ris...
the poor orientation of the restaurants toward the information technology has yet many unsolved issues in regards to the customers. one of these problems which lead the appeal list of later, and have a negative impact on the prestige of the restaurant is the case when the later does not respond on time to the customers’ needs, and which causes their dissatisfaction. this issue is really sensiti...
acknowledgements i wish to express my gratitude to all those who have helped me in preparing this thesis. i would like to express my deep gratitude to my respected advisor dr. kourosh akef, whose advice and comments helped me in the early stages of the research and throughout the writing process. i would also like to express my gratitude to dr. hajar khanmohammad whose invaluable guidance he...
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