α functionalization of carbonyl and carboxyl compounds via tautomeric enols

... phase of ␣-SnWO4 cannot be obtained and the product obtained is a mixture of SnW3 O9 and SnO2 With pH increasing to basic condition, a mixture of SnO2 and SnO can be obtained The molar ratio of ... the form of hydroxyl groups and oxygen in the ambient environment The adsorbed O2− and HO− groups can trap the electrons from the conduction band of ␣-SnWO4 and induce the formation of a depletion ... Academy of Science in 1996, and PhD degree in chemistry from National University of Singapore in 2000 She is currently a professor in Department of Chemistry and Chemical Engineering of Fuzhou...

Ngày tải lên: 20/03/2014, 13:05

... Spectroscopy of Explosives and Related CompoundsA Computational Study Kwa Soo Tin (B.Sc.(Hons), NUS) A Thesis Submitted For the Degree of Master of Science Department of Chemistry National University of ... of X-Ray Crystallography Structures 124 5.3.2 Study of Monomer Model 127 5.3.3 Study of Dimer Model and Influence of Hydrogen bonding 129 5.3.4 Study of Tetramer Model 134 5.3.4.1 Selection of ... progressive inclusion of intermolecular interactions via the modeling of an isolated monomer, dimer and tetramer All observed spectral peaks of the THz spectra of solid pellet 2,4-DNT and 2,6DNT from...

Ngày tải lên: 13/10/2015, 15:57

... characterization, pharmacological effects and biochemical targets of thousands of plant-derived and other chemical compounds Because of limitations of space it was simply not possible to reference ... parent compounds can in turn be altered through reduction of the sidechain double bond or of the carboxyl (to yield aldehydes and alcohols); formation of glycosides with sugars; formation of carboxylic ... sugars and other compounds (notably quinic acid and shikimic acid); formation of amides; decarboxylation (to yield pherlylproperles and phenylpropanes); methylation of phenolic hydroxyls; and formation...

Ngày tải lên: 17/02/2014, 05:20

... 3E,F) Time dependence of the bactericidal activity of H4-(86–100) and ciprofloxacin In order to evaluate the rapidity of action of histone H4 peptides and compare it with that of the quinolone antibiotic ... effects of various concentrations of HNr (A), lgÆ20 lL)1 of H4-(86–100), OGP, compound 3, compound 8, HNb-(3–13) and HNb-(1–13) (B) and lgÆ20 lL)1 of HNr, coumermycin A1, ciprofloxacin, LL-37 and ... ± 2.43 > 30 14.66 ± 0.24 Table Relative bactericidal activity of HN and related compounds in E coli Structures of HN and related compounds are illustrated in Fig Significance is expressed as P...

Ngày tải lên: 18/02/2014, 14:20

... under a feature-values set of restrictions, with the

Ngày tải lên: 09/03/2014, 01:20

... where γfilm and γsubs are the surface free energies of film and substrate, respectively, and γi the free energy of the interface The latter quantity depends on the strain and the strength of chemical ... parameter of the film and the substrate, and p is a factor dependent on elastic constants θB is the Bragg angle of the substrate and ∆θ is the difference between the Bragg angles of the film and the ... on the order of millimeters by millimeters and a depth of field on the order of millimeters The AFM can only show a maximum height on the order of micrometers and a maximum area of around 100×100...

Ngày tải lên: 14/03/2014, 19:20

... Schematic representation of the roles of the FadD proteins encoded by the DIM + PGL locus in the biosynthesis of DIMs and related compounds in Mycobacterium tuberculosis The role of the activation enzymes ... knowledge of the biosynthesis of DIMs and PGLs, the in vivo functions of these FadD proteins in this pathway remain to be established and ⁄ or completed For instance, the involvement of FadD26 ... activation of the various intermediates in DIM and PGL biosynthesis has not been analyzed This study was undertaken to dissect the roles of FadD22, FadD26 and FadD29 in the biosynthesis of DIMs and...

Ngày tải lên: 15/03/2014, 11:20

... section offers a brief account of what microfinance is and where the failures of regular microfinance lie, before introducing microfinance’s expansion into water and sanitation Present-day microfinance ... Making the Poor Pay for Public Goods via Microfinance assumptions of microfinance proposals and point to problems of collective action and larger regulatory and institutional failures The evidence ... microfinance’s expansion into the provision of public goods It focuses on the problem of public goods and collective action and refers to the specific example of water and sanitation The microfinancing...

Ngày tải lên: 16/03/2014, 09:20

... sequence of the first FXRE Ó FEBS 2002 3500 T Gerloff et al (Eur J Biochem 269) Fig Decrease of basal activity and loss of CDCA-mediated stimulation of the minimal Bsep promoter after mutation of the ... presence of the indicated compounds The following substrate concentrations were used: lmolÆL)1 each of dexamethasone, hydrocortisone, and b-estradiol; 50 lmolÆL)1 each of phenobarbital, rifampin, and ... reduction of signal intensities of The ability of drugs to regulate Bsep gene transcription was assessed by transfection of the full length construct p-1453 into HepG2 cells and subsequent treatment of...

Ngày tải lên: 17/03/2014, 23:20

... 259.8 L.M Fang et al / Journal of Alloys and Compounds 454 (2008) 261–267 265 Fig Bright field TEM and HRTEM micrographs of samples: (a) SGH1, (b) SGH5, and (c and d) SGH15 SnO2 nanoparticles ... HRTEM micrographs of SGC15 266 L.M Fang et al / Journal of Alloys and Compounds 454 (2008) 261–267 Fig FT-IR transmission spectra of samples: (a) SGC series and (b) SGH series range of 1059 cm−1 ... leads to a distortion of the crystal structure of the host com- L.M Fang et al / Journal of Alloys and Compounds 454 (2008) 261–267 263 aggregates also retarded the growth of SnO2 nanoparticles...

Ngày tải lên: 20/03/2014, 13:08

... requirements of data quality and traceability (chemical analysis, representative and targeted sampling, representative of consumer exposure, presentation of data, and handling and presentation of “nondetects”) ... reconsider and revise its approaches and documentation accordingly The final recommendations of the committee are offered to EPA with the recognition and appreciation of the enormous amount of time and ... speakers and important background documents and to William Farland for his outstanding assistance David L Eaton, Chair Committee on EPA’s Exposure and Human Health Reassessment of TCDD and Related Compounds...

Ngày tải lên: 22/03/2014, 16:21

... and WXH designed and directed studies, and were involved in the interpretation of the data and writing of manuscript BG, GFZ and FZ carried out the cells culture and HHV-6 infection BG, JFW and ... decreased NF-κB and increased Iκ-Bα expression in time- dependent manners IκBα is one member of the family of cellular proteins that function to inhibit the activity of NF-κB IκBα inhibits NF-κB ... in immunofluorescence assay and the western blot analysis BG, DJF and CZ performed the flow-cytometry experiments BG, JC and DDG performed the analysis of Caspase-8 and -9 activities and electron...

Ngày tải lên: 18/06/2014, 18:20

... zinc oxide [18] Whereas the bands at 3,200–3,600 cm-1 corresponds to the O–H mode of vibration and the starching mode of vibration of C = O and C–O are observed at 1,638 and 1,506 cm-1, respectively ... of Zn(OH)2? and [Zn(OH)2-]2? in an aqueous solution of refluxing pot In the solution of zinc acetate di-hydrate and sodium hydroxide, as the pH value of the solution is increases, the number of ... characterized via microscopic (FESEM and TEM) studies; on the other hand, the crystallinity and compositional study were analyzed via X-ray diffraction pattern and FTIR spectroscopy The study of antibacterial...

Ngày tải lên: 21/06/2014, 07:20

... free standing TMPBA and pyrene as residual impurities, there must be trace of carbonyl (C = O) stretching peak at 1,642 cm-1 and amide peaks at 3,215 and 3,386 cm-1 arising from benzamide, and sp2C–H ... University (WCU) and US-Korea NBIT programs through the National Research Foundation (NRF) of Korea funded by the Ministry of Education, Science and Technology (MEST) and US Air Force Of ce of Scientific ... assuming the amount of graphite before and after reaction remains constant, the amount of TMPBA grafted onto the edge of graphite can be simply estimated by subtracting the feed amount of Fig a 1H NMR...

Ngày tải lên: 21/06/2014, 17:20

... decomposition of NH4Cl enhances the porosity of the Al melt thereby promoting the transfer of Al into the gas stream On the other hand, the reaction of NH4Cl and Al leads to the formation of AlCl3 ... In, we find that incorporation of NH4Cl leads to the complete transfer of the solids of In and NH4Cl into the gas stream of N2 Indium has a low melting point of 156 °C and once molten it forms a ... 4:491–497 Fig a Coalescence of In2O3 NCs at the periphery of a well-defined circle and formation of flower-like structures b Coalescence of In2O3 NCs into ‘flowers’ and formation of a wreath spanning over...

Ngày tải lên: 22/06/2014, 01:20

... noitaidarri nortuen yG 33 APB htiw noitanibmoc ni nim 001 rof noitaidarri nortuen yG 33 nim 001 rof noitaidarri nortuen yG 33 nim 03 rof noitaidarri nortuen yG 01 lortnoc detaidarri noN tnemtaerT ... selubut emoS nim 001 rof nortuen yG 33 htiw detaidarri esuom eht morf selubut suorefinimeS giF puorg latnemirepxe hcae ni erew ecim eerhT* HSB htiw noitanibmoc ni nim 001 rof noitaidarri nortuen ... selubut suorefinimeS giF selpmas gniraelc rof desu saw enelyx dna ,lohocla %001 ot %05 ni detardyhed erew selpmaS )lm 01 dica citeca laicalg ,lm 02 nilamrof ,lm 03 lohocla lyhte( sevitaxif s’nosdivaD...

Ngày tải lên: 07/08/2014, 18:21

... presence of reducing and stabilizing agents, and subsequent (ex situ) ligand exchange with aptamers This ligand exchange might require heating and buffering in order to achieve satisfactory yields and ... Page of 11 In spite of these benefits, the use of laser-ablationbased in situ conjugation for the generation of aptamerconjugated AuNPs has not yet been reported We show the functionalization of ... the red film is composed of large agglomerates, while small agglomerates stay in the solution and can be detected via the shift of SPR Max and TEM analysis TEM micrographs of the agglomerates indicated...

Ngày tải lên: 11/08/2014, 00:22

... examiners and coroners, and the National Survey on Drug Use and Health [20], which provides national and state data on the extent and patterns of substance abuse (alcohol, tobacco, and illicit and ... unadjusted risk of abuse and prescription-adjusted risk of abuse of each IR and ER compound; and (3) fit a random effects binary logistic regression model to estimate the predicted probabilities of abusing ... measures was present Summary and Conclusions This study provides a comprehensive examination of the relative risks of abuse and ROA patterns of 11 compounds and formulations of prescription opioids...

Ngày tải lên: 11/08/2014, 18:20