... condensate, which was considered to consist of acetic acid and Jvater, was analyzed for the acid by titra- tion v,ith standard sodium hydroxide, using phenolphthalein as the indicator. ... Behavior of Acetic Acid- Water System Pressure, 760 mm. Hg iich region but only to about 30 weight % in the acid- rich range. For any particular run, the acetic acid- water ... acetic acid would be taken overhead and the bulk of the mixture (water) would be re- moved as bottoms. In order to do this-i.e., reverse the normal relative volatility of acetic acid and...
Ngày tải lên: 05/05/2014, 08:42
... culture of C. thermolacticum and M. thermoautotrophica ; the former for lactic acid production from milk permeate, the latter for acetic acid production from lactic acid. In batch culture experiments ... (50–65°C) and at pH between 5.8 and 7.7 (not shown). Approximately 0.93 g of acetic acid was formed from each gram of lactic acid. The bacterium grew at an optimal pH of 6.35–6.85 and an optimal ... 1.4 mol acetic acid per mol lactic acid consumed (0.93 g g −1 ). The growth and degradation rates were very similar for both strains: the pH range for cell growth was between 5.0 and 7.8, with...
Ngày tải lên: 05/05/2014, 08:44
BT 3 optimization of medium for indole 3 acetic acid production using pantoea agglomerans strain PVM
Ngày tải lên: 06/08/2013, 21:06
Longman complete course for the toefl test preparation for the computer and paper tests
Ngày tải lên: 16/12/2013, 15:41
Báo cáo khoa học: Staphylococcus aureus elongation factor G – structure and analysis of a target for fusidic acid pdf
... domains G and II and domains III, IV and V. In the S. aureus EF-G structure, this loop has a bent conformation, and packs against domain III and interacts with the linker between domains III and IV ... Structure superposition was performed with o [47]. Acknowledgements We thank the SLS and ESRF for beam time and sup- port during data collection, and K. Ba ă ckbro and C. S. Koh for comments on the manuscript. ... hydrolysis and trans- location [25]. FA binds to a pocket between domains I, II and III of EF-G, and seems to lock EF-G in a conformation intermediate between the GTP-bound and GDP-bound forms [22]....
Ngày tải lên: 06/03/2014, 22:21
Báo cáo khoa học: Reconstruction ofde novopathway for synthesis of UDP-glucuronic acid and UDP-xylose from intrinsic UDP-glucose inSaccharomyces cerevisiae pptx
... alternative route for the production of UDP-glucuronic acid via myoinositol has also been identified and characterized. Synthesis of UDP-glucuronic acid and UDP-xylose T. Oka and Y. Jigami 2646 ... (UDP-Xyl) and UDP-D- glucuronic acid (UDP-GlcA) were 7.4 min, 7.8 min and 11.8 min, respectively, under identical assay conditions. T. Oka and Y. Jigami Synthesis of UDP-glucuronic acid and UDP-xylose FEBS ... RH (1992) Improved method for high efficiency transformation of intact yeast cells. Nucleic Acids Res 20, 1425. T. Oka and Y. Jigami Synthesis of UDP-glucuronic acid and UDP-xylose FEBS Journal...
Ngày tải lên: 07/03/2014, 12:20
The 2000-2005 World Outlook for Program Administration and Net Cost of Private Health Insurance pdf
... political and economic risk assessments and legal trends (e.g., intellectual property, licensing, and corruption). This report covers the world outlook for program administration and net cost ... Administration and Net Cost of Private Health Insurance 11 www.icongroupedition.com Ó2002 Icon Group Ltd. econometric models to estimate these markets, and forecast these over time. As true for all forward-looking ... THE WORLDWIDE MARKET POTENTIAL FOR PROGRAM ADMINISTRATION AND NET COST OF PRIVATE HEALTH INSURANCE Worldwide Market Potential for Program administration and net cost of private health insurance...
Ngày tải lên: 16/03/2014, 00:20
Báo cáo khoa học: Mutational analyses of human eIF5A-1 – identification of amino acid residues critical for eIF5A activity and hypusine modification doc
... human and yeast eIF5A (compare lanes 17 and 18 in Fig. 2C, and lanes 8 and 9 in Fig. 2D). The yeast eIF5A and most of the heIF5A mutants were readily detectable in HHY212d strains (Fig. 2C) before 5-FOA ... growth-supporting activity and as substrates for DHS and DOHH. Judging from the fact that all but the Lys50 mutants are substrates for DHS (albeit at a reduced efficiency for some), single amino acid substitutions, ... pellets, and the suspended samples were heated at 100 °C for 15 min. A portion of washed trichloroacetic acid precipitates was used for protein determination by the Bio-Rad protein assay and another...
Ngày tải lên: 16/03/2014, 06:20
Báo cáo khoa học: Activation of p21-activated kinase 1 is required for lysophosphatidic acid-induced focal adhesion kinase phosphorylation and cell motility in human melanoma A2058 cells potx
... with standard errors of six experiments. Fig. 3. PAK1 activation depends on Cdc42 and Rac1. (A) A2058 cells were serum-deprived and treated with or without 10 l M LY294002 (LY) for 1 h before incubating ... the dominant negative forms (N17Rac1, N17Cdc42 and N19RhoA) and the corresponding control vectors, and the cells were incubated in the absence or presence of 2 l M LPA for 5 min. PAK1 activity ... heterotrimeric G proteins and was thus initially considered as the best candidate target of LPA [56]. On the other hand, it has been shown that the PI3Kb isoform was important for the mitogenic activity...
Ngày tải lên: 30/03/2014, 13:20
Báo cáo khoa học: Redox reaction between amino-(3,4-dihydroxyphenyl)methyl phosphonic acid and dopaquinone is responsible for the apparent inhibitory effect on tyrosinase doc
... site for the hydroxylation reaction to occur. The same seems to hold for the derivatives of mandelic acid: 3,4-dihydroxymandelic acid is oxidized by tyrosinase, whereas 4-hydroxymandelic acid ... 0 °C and 0.05 mol of PCl 3 was added. The mixture was heated and refluxed for 2 h to complete the reaction. Acetic acid was removed by rotary evaporation and the oily residue was refluxed for 10 ... m M sodium phosphate buffer, pH 6.8, for 4 h with vigorous stirring. The reaction was stopped by addition of trichloroacetic acid to a final concentration of 5% and centrifuged at 12 000 g for...
Ngày tải lên: 31/03/2014, 09:20
Analysis and practical implementation of a model for combined growth and metabolite production of lactic acid bacteria
... part of projects OT/99/24 and COF/98/008, the Institute for the Promotion of Innovation by Science and Technol- ogy in Flanders (IWT), the Fund for Scientific Re- search-Flanders (FWO) as part of ... reaches maximum values for the specific rates, the metabolites accumulate slowly and their influence on growth and production kinetics is small. Therefore, since the medium and associated initial ... of mathematical models in the food industry is gaining more and more attention for process evaluation, opti- misation and design (Walls and Scott, 1997). For mathematical models to be of use in the specif...
Ngày tải lên: 05/05/2014, 08:44
Báo cáo sinh học: " Hierarchical convergence of an implicit double-net algorithm for nonexpansive semigroups and variational inequality problems" ppt
... (1.1). For this purpose, we propose a double -net algorithm which generates a net {x s,t } and prove that the net {x s,t } hierar- chically converges to the solution of the problem (1.1), that is, for ... notice below). For information about publishing your research in Fixed Point Theory and Applications go to http://www.fixedpointtheoryandapplications.com/authors/instructions/ For information about ... acceptance. Fully formatted PDF and full text (HTML) versions will be made available soon. Hierarchical convergence of an implicit double -net algorithm for nonexpansive semigroups and variational...
Ngày tải lên: 18/06/2014, 22:20
Báo cáo hóa học: " Research Article Hierarchical Convergence of a Double-Net Algorithm for Equilibrium Problems and Variational Inequality Problems" ppt
... some problems, for example, mathematical program and hierarchical minimization problems as special cases. For solving HEVP, we propose a double -net algorithm which generates a net {x s,t }. ... problem considered by Cabot 12 and Solodov 13, as special cases. For solving 1.12, we propose a double -net algorithm which generates a net {x s,t }. We prove that the net {x s,t } hierarchically ... D. S. Shyu, and J C. Yao, “Strong and weak convergence theorems for common solutions of generalized equilibrium problems and zeros of maximal monotone operators,” Fixed Point Theory and Applications,...
Ngày tải lên: 21/06/2014, 07:20
Separators and organics for lead–acid batteries pps
... with acid and thus offer optimum electrolyte absorption and lowest electrical resistance. Normally, surfactant molecules are soluble in acid. After a relatively short time they are oxidized and ... characteristics were detrimentally affected. For example, cold-crank performance decreased very soon with cycling and there was a tendency towards increased sulfation and thus shorter battery life. In an extensive ... manufac- turers. 3. Organics and wettability Modern synthetic lead acid battery separators, e.g., polyethylene containing silica agglomerates, are reinforced by a network of extremely long macromolecules,...
Ngày tải lên: 05/07/2014, 20:21
Longman Complete Course for the Toefl Test: Preparation for the CBT and PBT 1 doc
Ngày tải lên: 08/07/2014, 21:20
Longman Complete Course for the Toefl Test: Preparation for the CBT and PBT 2 ppt
Ngày tải lên: 08/07/2014, 21:20
Longman Complete Course for the Toefl Test: Preparation for the CBT and PBT 3 pdf
Ngày tải lên: 08/07/2014, 21:20
Longman Complete Course for the Toefl Test: Preparation for the CBT and PBT 4 ppsx
Ngày tải lên: 08/07/2014, 21:20
Longman Complete Course for the Toefl Test: Preparation for the CBT and PBT 5 doc
Ngày tải lên: 08/07/2014, 21:20