transfer reactions in nonaqueous solvents p
Part i organic reactions in non conventional solvents part II new approach to the formation of bishomoallylic alcohols synthesis of (r) sulcatol
Ngày tải lên :
16/09/2015, 15:54
... (triflate) p para Ph phenyl ppm parts per million Pr propyl py pyridine q quartet List of Abbreviation x qn quintet Rf retention factor Rt retention time rbf round-bottom flask rt room temperature s singlet ... OMe Pd Complex N O HN R COOiPr Ar Ar P Pd+ P Ar Ar COOiPr Ar Ar P Pd+ O P H Ar Ar H O Pd complex Scheme 11 Enantioselective addition of enol silyl ethers to imines catalyzed by palladium complexes ... CO 2Me Amine + Aldehyde + Nu mins + OTMS H + OMe Amine + Aldehyde + Nu mins Cl 40 mins 35 mins hr 20 mins hr pure Mannich product MeO C NH O OMe pure Mannich product Cl 10 10 (ppm) (ppm) Figure...
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A CFD analysis of transport phenomena and electrochemical reactions in a tubular-shaped PEM fuel cell
Ngày tải lên :
05/09/2013, 14:58
... attendant higher operating cost This type of operating point would be typified by a portable application (such as vehicle, laptop PC, or cell phone) where light weight and small volume are important drivers ... to try all sorts of combinations of geometries and operating conditions to come up with an optimum design for the application Usually, many compromises in the operating points (cell voltages and ... calculations presented here have all been obtained on a Pentium IV PC (3 GHz, GB RAM), using Windows XP operating system The geometric and the base case operating conditions are listed in Table Values...
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Tài liệu Chapter 9: Miscellaneous catalytic reactions in aqueous media pdf
Ngày tải lên :
23/12/2013, 07:19
... corresponding carbonyl compounds with a catalyst prepared in situ from and TPPTS The reactions proceeded very fast (TOF up to ) and in most cases provided the carbonyl products quantitatively The industrially ... 266 Chapter (performed under unhydrous conditions) Especially valuable feature of isomerizations is in that all atoms of the starting compound are incorporated into the product, respresenting a ... followed by or NMR in a highpressure sapphire NMR tube Our detailed studies have shown that watersoluble phosphine complexes of ruthenium and rhodium with TPPMS, TPPTS or PTA ligands are able to...
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Tài liệu Means-Tested Transfer Programs in the United States docx
Ngày tải lên :
16/02/2014, 03:20
... that 21.4 percent of overclaims resulted from incomereporting errors These problems may arise from both underreporting and overreporting income (including underreporting of investment income, which ... noncustodial parent is currently paying child support and receiving the dependent exemption and the custodial parent is receiving the EITC Integrating the dependent exemption and EITC could result in pressure ... The link between the marginal incentives of the credit shown in figure 3.2 and the labor supply decisions discussed in figure 3.4 depends on people understanding the specific incentives inherent in...
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Báo cáo khoa học: Evidence for two different electron transfer pathways in the same enzyme, nitrate reductase A from Escherichia coli potx
Ngày tải lên :
07/03/2014, 15:20
... that in the parent Stopped-flow kinetics Stopped-flow kinetic measurements were made with a Hi-Tech Scientific FF61 apparatus (Salisbury, UK) connected to a personal computer The stopped-flow apparatus ... [16], pVA700, pJF119EH(narGHIJ)Apr, as overexpressed wildtype plasmid [17] and pVA700-C16, pJF119EH(narGH[C16A]IJ)Apr, as plasmid lacking the high-potential [4Fe-4S] cluster [17] These were obtained ... duroquinone, i.e a nucleus of type benzoquinone, specifically inhibits the site for menadiol, as predicted by previous studies showing cross-inhibition of menadiol and duroquinol on the binding...
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Chemical of alumina reactions in aqueous solution and its application in water treatment
Ngày tải lên :
15/03/2014, 23:22
... as PVP on alumina is much lower than PAA mainly due to the hydrophobic property of PVP ring However, in the presence of PAA the adsorption of PVP significantly increases as a result of the interaction ... Alumina pillared montmorillonite and mesoporous alumina aluminium phosphates were also used as the adsorbents of pesticides such as: atrazine, propazine, prometryne, propachlor, propanil and molinate ... acid in the bulk phase w70x In the case of alumina, an amphoteric oxide, the property of the surface depends strongly on pH It has been already emphasised in this paper that alumina surface is positively...
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Investigation of au and in as solvents for the growth of silicon nanowires on si(1 1 1)
Ngày tải lên :
16/03/2014, 15:17
... that a thin oxide layer forms during insertion of the sample into the UHV chamber in spite of the preceding HF-dip There are hints in the literature [11] that deposition of gold onto a thin layer ... no relation to the position of the nanopores By contrast, when we skipped the desorption step, tiny indium droplets formed in the nanopores This is in good agreement with the previous considerations ... metal evaporation By adjusting metal evaporation rate and substrate temperature, individual indium or gold droplets formed preferentially within the pre-structured pores (Figs and 8) For indium,...
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Báo cáo khoa học: Bioenergetics of the formyl-methanofuran dehydrogenase and heterodisulfide reductase reactions in Methanothermobacter thermautotrophicus pot
Ngày tải lên :
17/03/2014, 09:20
... membrane [12] M thermautotrophicus neither contains methanophenazine, nor the cytochrome b-type proteins that are typical for the Methanosarcina electron-transport chain In an in vitro system from M ... gradient of H+ (DpH): pmf ¼ Dw À Z:DpH ðmVÞ ð9Þ where Z ¼ 2.303(RT/F) and DpH ¼ pHi – pHo; pHi and pHo refer to the intra- and extracellular pH, respectively At the experimental temperature (65 °C) ... parts One portion was kept cold, while the other part was incubated for h at 65 °C under an N2 atmosphere (100%, 200 kPa, 200 r .p. m.) and in the presence of uncoupler (25 lM p- nitrophenol or...
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Báo cáo Y học: Expression and distribution of penaeidin antimicrobial peptides are regulated by haemocyte reactions in microbial challenged shrimp pptx
Ngày tải lên :
18/03/2014, 01:20
... populations, expressing vs not expressing penaeidins [14] Microbial stimulation induces changes in the total number of circulating haemocytes, and in the population of haemocytes expressing penaeidins ... cell preparations were washed in phosphate buffer, incubated for 10 in 0.25% anhydride acetic prepared in 100 mM triethanolamine pH 8, and briefly washed in · NaCl/Cit Samples were then rinsed in ... When the specific antipenaeidin antibodies were preincubated with purified recombinant penaeidins [19], penaeidin immunostaining was no longer observed providing evidence of the specificity of the reaction...
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Báo cáo khoa học: Evidence of a new phosphoryl transfer system in nucleotide metabolism doc
Ngày tải lên :
23/03/2014, 06:20
... ADP Adenosine þ H2 O ! inosine þ NH3 The AMP–AMP phosphotransferase reaction is: AMP þ AMP ! ADP þ inosine þ NH3 AMP þ AMP ! ADP þ inosine þ NH3 resulting from reactions (2) and (3): ADP and inosine ... Enzyme–phosphate intermediate trapping When enzyme–phosphate intermediate trapping experiments were performed, no spot was detected on the autoradiography slide, indicating direct transfer of the phosphoryl ... from the presence of ADA in vivo 278 The AMP–AMP phosphotransferase reaction is irreversible Any attempt at producing AMP by incubating ADP, inosine and NH3 together is ineffective In the absence...
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Báo cáo khoa học: "Exploiting Feature Hierarchy for Transfer Learning in Named Entity Recognition" ppt
Ngày tải lên :
23/03/2014, 17:20
... trained prior for regularization If we are unable to find a match between features in the training and tuning datasets (for instance, if a word appears in the tuning corpus but not the training), ... in experiments Genre Bio Bio News News E-mail Intra-genre transfer performance evaluated on MUC6 Task Protein Protein Person Person Person 0.7 0.6 0.5 F1 Corpus UTexas Yapex MUC6 MUC7 CSPACE ... multiple related tasks In Proceedings of International Conference on Machine Learning (ICML) Einat Minkov, Richard C Wang, and William W Cohen 2005 Extracting personal names from email: Applying...
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CHEMICAL REACTIONS IN GAS, LIQUID AND SOLID PHASES: SYNTHESIS, PROPERTIES AND APPLICATION pptx
Ngày tải lên :
28/03/2014, 10:20
... Celloviridin represents a complex set of components containing a biomass, in particular, having lipids subjected to peroxidation (LPO), which products may affect the enzyme activity To regulate LPO intensity ... should be noted in this connection that α-TP, in turn, more preferably interacts with poly-unsaturated phospholipids [29, 42], thus promoting cholesterol pushing out and simplifying formation of ... contain biomass components, lipids, in particular, capable of easy oxidation, giving products capable of damaging enzymic proteins However, for us the main precondition of phenosan use is the...
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kinetic modeling of reactions in foods
Ngày tải lên :
02/04/2014, 15:04
... Boekel/Kinetic Modelling of Reactions in Foods DK3903_C000 Final Proof page i 12.11.2008 10:19pm Compositor Name: JGanesan Kinetic Modeling of Reactions in Foods Boekel/Kinetic Modelling of Reactions ... Boekel/Kinetic Modelling of Reactions in Foods DK3903_C000 Final Proof page xviii 12.11.2008 10:19pm Compositor Name: JGanesan Boekel/Kinetic Modeling of Reactions in Foods DK3903_C001 Final Proof page ... have the presence of amorphous phases, like in glasses The vapor phase is of importance when a Boekel/Kinetic Modeling of Reactions in Foods DK3903_C001 Final Proof page 5.11.2008 6:48pm Compositor...
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kobayashi - cycloaddition reactions in organic synthesis (wiley, 2001)
Ngày tải lên :
03/04/2014, 12:15
... ligand prepared from aminoindanol, and applied the copper complex of this ligand to the asymmetric Diels-Alder reaction Davies varied the link between the two oxazolines and found that cyclopropyl ... with isoprene in the presence of 10 mol% of the titanium reagent 31 in toluene, poor optical purity results (36–68% ee) Interestingly the optical purity of the adduct greatly increased in the ... 3-alkenoyl-1,3-oxazolidin-2-one binds with the chiral Lewis acid at a single point, though the dienophile is thought to be a good two-point binding ligand [29] The dienophile is, moreover, thought to adopt an...
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kurti - strategic applications of named reactions in organic synthesis (elsevier, 2005)
Ngày tải lên :
03/04/2014, 12:15
... 1,2-bis(diphenylphosphino)ethane dppf PPh2 1,1'-bis(diphenylphosphino)ferrocene Ph 2P PPh2 Fe PPh2 dppm bis(diphenylphosphino)methane dppp 1,3-bis(diphenylphosphino)propane DPS (also TBDPS or BPS) t-butyldiphenylsilyl ... Tol p- tolyl tolbinap 2,2'-bis(di -p- tolylphosphino)-1,1'-binaphthyl + N P P O N TPAP tetra-n-propylammonium perruthenate TPP triphenylphosphine O Ru O O P Ph NH TPP 5,10,15,20-tetraphenylporphyrin ... 1,2-diamino-1,2-diphenylethane Ph DPIBF diphenylisobenzofuran O Ph DPPA diphenylphosphoryl azide (diphenylphosphorazidate) O O Dppb (ddpb) 1,4-bis(diphenylphosphino)butane P O N N+ N- Ph 2P PPh2 dppe...
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electrochemistry in nonaqueous solutions 2002 - izutsu
Ngày tải lên :
16/04/2014, 11:20
... / / / 1.1 Properties of Solvents Tab 1.2 Physical and chemical properties of solvents Physical properties Chemical properties Bulk properties: boiling point, melting (or freezing) point, molar ... circuits 118 Polarography, pulse 127 – differential pulse polarography (DPP) 129 – inverse pulse polarography 129 – normal pulse polarography (NPP) 128 Polarography, SW 127 – faradaic and charging currents ... in AN 186 Propanol, 1- and 2-, purification 298 Propylene carbonate, purification 298 Protogenic solvents, acid-base reactions in 62 Protophilic solvents, acid-base reactions in 62, 65 Protophobic...
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Strategic decentralization, bargaining, and transfer pricing in supply chain efficiency
Ngày tải lên :
01/06/2014, 14:04
... manager's compensation affects an investment hold-up problem and supply chain efficiency by increasing a supplier's bargaining power A supplier's delegation of bargaining to a manager with stock options ... absorption costing system can be a strategic device to achieve softened competition in duopoly 1.4 Bargaining in Supply Chains Bargaining is prevalent in everyday life and it is prominent in business ... delegation, transfer pricing and bargaining in enhancing supply chain efficiency Chapter examines how strategic delegation coupled with stock options increases a firm's bargaining power using sunk...
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Báo cáo hóa học: " Numerical evaluation of laminar heat transfer enhancement in nanofluid flow in coiled square tubes" pdf
Ngày tải lên :
21/06/2014, 03:20
... at the inlet for comparison purposes where Wpump is the pumping power required to drive the fluid flow through the channel It is given by Wpump = ˙ m p ηpump (15) Here, h pump is the pump efficiency ... p: In- plane spiral; pump: Pump; w: Water; wall: Wall Author details Department of Mechanical Engineering, National University of Singapore, Engineering Drive 1, Singapore, 117576 Singapore 2Minerals, ... and writing the manuscript JCK prepared created the computational domain, conducted post-processing and participated in preparing manuscript Both APS and JCK performed the analysis ASM supervised...
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Báo cáo hóa học: "Particle shape effect on heat transfer performance in an oscillating heat pipe" pot
Ngày tải lên :
21/06/2014, 04:20
... BF P3 V03 P3 V1 P3 V3 P3 V5 P4 V03 P4 V1 P4 V3 P4 V5 80 70 60 50 40 30 300 50 100 (a) 250 300 (b) 2.5 2.4 1.5 0.5 BF P3 V03 P3 V1 P3 V3 P3 V5 P4 V03 P4 V1 P4 V3 P4 V5 2.2 Thermal resistance( C/W) BF P1 V03 P1 V1 ... analysis and interpretation of experimental data, and participated in drafting and revising, and finalizing the manuscript All authors read and approve the final manuscript Competing interests The ... oscillating heat pipes Int J Heat Mass Transfer 2009, 52:3504-3509 Charoensawan P, Khandekar S, Groll M, Terdtoon P: Closed loop pulsating heat pipes Part A: parametric experimental investigations Appl...
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Báo cáo hóa học: " Organic nanofibers integrated by transfer technique in field-effect transistor devices" pot
Ngày tải lên :
21/06/2014, 04:20
... http://www.nanoscalereslett.com/content/6/1/319 In addition to the nanofiber devices, p6 P thin film [42] devices were also prepared for comparison of the electrical properties of crystalline nanofibers and amorphous thin films The preparation ... exception of the nanofiber transfer step being replaced by vapor deposition of the p6 P molecules directly onto the device substrates at room temperature resulting in a structure-less film Page ... geometry was prepared by applying 150 nm PMMA via spin-coating onto bottom contacted nanofibers to function as gate dielectric and applying a top gate electrode by gold deposition through a nanostencil...
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