fixed bed catalytic reactor ppt

Ngày tải lên: 02/04/2014, 15:50

Ngày tải lên: 05/09/2013, 16:11

Ngày tải lên: 05/09/2013, 16:11

Ngày tải lên: 18/12/2013, 09:19

... disruption in catalytic function, with a k cat reduction of more than 99% and a 20-fold increase in K m . The introduced changes resulted in a 1300- and 2200-fold decrease in the catalytic efficiency ... correlated with the decrease in catalytic effi- ciency (Fig. 5C). An alteration (increase or decrease) in volume of the amino acid at position 266 induced a decrease in catalytic efficiency of the enzyme. ... alteration of the amino acid volume decreases the catalytic efficiency, suggesting that these steric considerations may be a requirement for high catalytic efficiency. The mutations did not produce...

Ngày tải lên: 18/02/2014, 17:20

... sequence encoding the catalytic module (Glu1– Thr371) of H. jecorina Cel7B (Cel7B cat ) was expressed under the control of the gpdA promotor from Aspergillus nidulans as described previously [19] ... QM9414- Cel7B cat N182Q. Transformation and selection was per- formed as described by Collen et al. [19], based upon the method described by Penttila ¨ et al. [20]. The strains H. jecorina QM9414-Cel7B cat and ... similar modular structure comprised of a catalytic module connected to a carbohydrate-binding module (CBM) by a flexible linker peptide. The 3D structures of the catalytic modules of Cel7A (formerly...

Ngày tải lên: 19/02/2014, 12:20

... Ferredoxin-NADP(H) reductase catalytic mechanism (Eur. J. Biochem. 270) 1903 [20–23,27–33]. At the other extreme of the spectrum, Piubelli et al. [50] have described a site-directed mutant of pea ... sevenfold increase of catalytic competence for NADPH in the ferricyanide-dependent diaphorase reaction. The k cat /K m ratio, usually employed as a quantitative estimation of the catalytic efficiency ... strongly conserved at the corres- ponding position in the vast majority of FNR proteins described so far. Catalytic competence is obviously not the only trait that determines the evolutionary success...

Ngày tải lên: 20/02/2014, 11:20

... the reactor core components, since as the power for all the reactor core components, since as the power distribution in the reactor changes due to fuel burn-up or core distribution in the reactor ... in following figure III.1. THERMAL-HYDRAULIC IN NUCLEAR REACTOR  In nuclear reactor cores the axial power distribution may In nuclear reactor cores the axial power distribution may have various ... IN NUCLEAR REACTOR  IX. Heat conduction in fuel assembly IX. Heat conduction in fuel assembly   Modern nuclear power reactors contain cylindrical fuel Modern nuclear power reactors contain...

Ngày tải lên: 21/02/2014, 00:20

... NG NGUY NGHIÊN CU NG DNG CÔNG NGH MBBR (MOVING BED BIOFILM REACTOR)  X C THI SN XUT BIA Chuyên ngành : Công ngh ng MSHV : ... system encountered many difficulties. This research was studied on application of Moving Bed Biofilm Reactor for brewing wastewater treatment, given more options for upgrading existing wastewater ... nh tính cn thit khi la ch  tài: “Nghiên cư ́ u ứng dụng công nghệ MBBR(Moving Bed Biofilm Reactor) để xử lý nước thải sản xuất bia”. 2. Tng quan 31 s c các vi sinh...

Ngày tải lên: 26/02/2014, 13:08

... pellets inside a reactor (column or tube). In such fixed -bed reactors, the conventional way to achieve the appropriate Table 2.1 Slurry reactors versus conventional fixed -bed reactors N Compared ... conventional types of fixed -bed reactors, which are mainly employed for multiphase processes: Trickle -Bed Reactors (TBRs), Bubble (packed) Column Reactors (BCRs), and MultiTubular Reactors (MTRs). Some ... Compared features Slurry reactor Fixed- bed reactors 1 Reaction performance 1.1 Overall reaction rate related to the catalyst mass High Low 1.2 Overall reaction rate related to the reactor volume (or...

Ngày tải lên: 16/03/2014, 22:20

... biofilm khác, vì vy nó tu kin thun li cho quá trình x Hình 2.8b. Anoxic reactor Hình 2.8a. Aerobic reactor 2. Tng quan 29 Hình 2.9. Các loại giá thể K1, K2, K3, Biofilm ... NG NGUY NGHIÊN CU NG DNG CÔNG NGH MBBR (MOVING BED BIOFILM REACTOR)  X C THI SN XUT BIA Chuyên ngành : Công ngh ng MSHV : ... Chuyên ngành : Công ngh Môi trng 1- TÊN  TÀI: Nghiên cu ng dng công ngh MBBR (Moving Bed Biofilm  x lc thi sn xut bia. 2- NHIM V LUN VN:  Lp mô hình nghiên...

Ngày tải lên: 20/03/2014, 03:21

... the flexible catalytic loop [12]. The flexible catalytic loop of PRibPP synthase is topologically and functionally equivalent to a loop, variously designated the flexible loop, the catalytic loop, ... alleles specifying alanine substitutions of the flexible catalytic loop The codons of the flexible catalytic loop were altered individually to specify alanine as described in Experi- mental procedures. Each of ... synthase mutant forms with the individual amino acids of the flexible catalytic loop altered to alanine with emphasis on the two catalytic residues Lys197 and Arg199. Results Complementation of Dprs...

Ngày tải lên: 23/03/2014, 15:20

Ngày tải lên: 01/04/2014, 03:20

Ngày tải lên: 20/06/2014, 20:20

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Ngày tải lên: 27/06/2014, 12:20

... a fixed database role inherits all the permissions specified by the role. A person can belong to multiple roles, if necessary. Steps A fixed database role is similar in some ways to the fixed ... dialog box by clicking on its OK button. Comments The fixed database roles are not to be confused with the similar fixed server roles. Each fixed database role applies only to a single database. ... in this chapter. The difference is that fixed database roles determine permissions to perform operations on objects within a single database, whereas fixed server roles specify the administrative...

Ngày tải lên: 14/12/2013, 20:16

... 2-hexadecanone was obtained in 4 and 2 h, respectively, with a Catalytic oxidations in aqueous media - recent developments 261 catalytic process, preferably with water as one of the phases, for ... reactions would be the use of or as oxidants in a biphasic Chapter 8 Catalytic oxidations in aqueous media - recent developments Catalytic oxidation of organic compounds is an extremely important ... could be recycled with no apparent loss of activity. Perhaps the most important recent discovery in catalytic oxidation of alcohols is the use of a catalyst prepared from and sulfonated batophenanthroline...

Ngày tải lên: 23/12/2013, 07:19