α functionalization of ketones via their enamines

... (NRF) of Korea funded by the Ministry of Education, Science and Technology (MEST) and US Air Force Of ce of Scientific Research (AFOSR) Open Access This article is distributed under the terms of ... empirical formula weight of C48H38O4, which agreed well with those of pyrene-g-(TMPBA)2 (n = 2) Hence, the bisubstitution of TMPBA onto pyrene could be most likely occurred to pyrene via ‘‘direct’’ Friedel–Crafts ... further assure the feasibility of the reaction between pyrene and TMPBA On the basis of results from model reaction, the covalent attachment of TMPBA on the edge of graphite can be Nanoscale Res...

Ngày tải lên: 21/06/2014, 17:20

... 10 2.1 Surface Functionalization of Silicon Substrates via SelfAssembled Monolayers 11 2.2 Surface Functionalization via Layer-By-Layer Approach 22 2.3 Surface Functionalization via Grafted Polymer ... daughter, and parents for their continuous love and support i TABLE OF CONTENTS Page Acknowledgement i Table of Contents ii Summary iv Lists of Tables vi Lists of Figures vii Lists of Symbols xii Chapter ... processes of RAFT-mediated graft polymerization of VBC on the Si-H surface and functionalization of the VBC graft-polymerized Si surface with viologen Figure 4.3 XPS (a) N 1s core-level spectrum of...

Ngày tải lên: 16/09/2015, 17:11

... MOLECULAR MODIFICATION OF POLYIMIDES VIA GRAFT COPOLYMERIZATION AND FUNCTIONALIZATION WANG WENCAI (M.Eng., BUCT) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CHEMICAL & BIOMOLECULAR ... 5.5 Dielectric constant of the nanoporous PI film as a function of porosity Figure 5.6 Schematic illustration of the process of thermally-induced graft copolymerization of AAc with the ozone-preactivated ... manufactured by Anatech Inc of Springfield, VA, USA The glow discharge was produced at an applied frequency of 40 kHz, a power of 32 W, an Ar pressure of 0.5 Torr and an Ar flow rate of 50 standard cubic...

Ngày tải lên: 17/09/2015, 17:20

... consisted of a single 30 minute coupling step of equivalents of monomers to the H H O H O OO O N N H H H O H N O N O H N O H2N H O H N growing polyamide chain, followed by capping of the unreacted ... Ligation of the pentamer I with the tetrazine-dicarboxylate 6: One µmol of the pentamer I (Figure 3) and 5.5 µmol of the tetrazine (intermediate as shown in Figure 2) [22] were mixed in 0.5 ml chloroform ... Ligation of the Pentamer II with the tetrazine-dicarboxilate 6: The DARinv of the pentenoyl-pentamer II with tetrazine-3,6-dimethylcarboxilate µmol (1.86 mg) of the pentamer and 10 µmol (2mg ) of the...

Ngày tải lên: 25/10/2012, 11:00

... a profound effect on the strategies learners choose, with negative attitudes and beliefs often causing poor strategy use or lack of orchestration of strategies  Type of task: The nature of the ... accordance with their level of English based on the results of their placement test To sum up, we tried to select two compatible groups for the experiment Twenty students in each group officially ... Medians of the two groups increased M of the experimental group was 7.75 while the control group had a mean of 6.65 Modes and Medians of the experimental group were higher than those of the control...

Ngày tải lên: 07/11/2012, 14:54

... improve their reading activities to satisfy their students I.5 Methods of the study In order to achieve the goal of the study, which was to investigate the studnents’ degree of satisfaction with their ... congress of the Communist Party of Viet Nam, the policy of DOI MOI (Renovation) was adopted New approaches to planning in all fields emerged, affecting all sectors of society Education is just one of ... student can be well catered for An area of research which has received a lot of attention in many areas of education is the issue of learning style The idea of learning style comes from general...

Ngày tải lên: 07/09/2013, 13:48

... had to use multiple measures of outcome; given that the psychometric characteristics of individual measures often leave much to be desired, a convergence of outcome of all or most measures enhances ... is the natural outgrowth of the construal of social phobia as a ‘‘disorder’’ of anxiety Anxiety in turn is conceived of intra-personally (i.e as an enduring quality of the individual generated ... interpersonal ways of dealing with their real-life social circumstances, and to use them in situations very much a part of their daily lives The emphasis in therapy is on finding ways of behaving that...

Ngày tải lên: 01/11/2013, 08:20

... Neuhof et al Fig Intact-cell MALDI-TOF spectra of mycelia (A, C, E) and sporulating mycelia (B, D, F) of three strains of H jecorina grown on malt agar The masses displayed have an error of about ... compilation ª 2007 FEBS T Neuhof et al Trichoderma hydrophobins Fig Intact-cell MALDI-TOF mass spectra of mycelia and spores of Trichoderma strains The masses 7347 and 7494 of T atroviride spores correlate ... appearance of higher mass peaks upon sporulation, presumably related to the only large hydrophobin of H jecorina lation of mass data is achieved by the calculation of successive deletions of terminal...

Ngày tải lên: 19/02/2014, 02:20

... types of disambiguating information In another paper [2] we describe a new multilingual approach in which we gather statistics about senses of amhiguous words of one language using a corpus of a ... degrees of association between the competing alternatives and their surrounding context In getting this syntactically based statistic we are of course limited by the coverage and the accuracy of the ... without manually tagging the occurrences of the ambiguous words with their word senses In our first experiment we have examined about one hundred examples of ambiguous Hebrew words which were selected...

Ngày tải lên: 17/03/2014, 08:20

... of input sentences, including transcriptions of mother's speech to their children Finally, substantially larger corpora should be used in order to enlarge the number of verbs classified All of ... predicate argument structures In Proceedings of the ~Sth Annual Meeting of the ACL, pages 268-275 ACL, 1990 [Lakoff, 1965] G Lakoff On the Nature of Syntac tic Irregularity PhD thesis, Indiana ... occurrences of the progressive and rate adverb constructions in the LOB corpus, and then computing confidence intervals on the true frequency of occurrence of each verb in an arbitrarily large corpus of...

Ngày tải lên: 24/03/2014, 05:21

... minuteness of his faithful inquiry into hundreds of figures, tables showing the condition of banks at the time of various panics, etc., etc., essential to his demonstration As an extreme instance of ... collapse [Footnote: _Inter-relations of Tariffs, Panics, and the Condition of Agriculture, as Developed in the History of the United States of America_ This brief sketch of our economic history in the ... half of our population Their votes can cause to be made such laws as they see fit, hence, one would expect the enactment of laws to raise the price of farm products, and to lower the price of all...

Ngày tải lên: 29/03/2014, 12:20

... University, 1985; Professor of European Law & Jean Monnet Professor, University of Groningen (The Netherlands), Jean Monnet Centre of Excellence; Professor at the College of Europe, Bruges (Belgium) ... of goods.22 All of these three aspects feature in the trio of spectacular cases on the use of goods,23 which form the subject-matter of this 20 See LAURENCE GORMLEY, EU LAW OF FREE MOVEMENT OF ... relating to the use of goods fall within the scope of article 34 TFEU Fortunately, the judgments mark a firm rejection of siren calls in favor of the importance of the unity of the internal market...

Ngày tải lên: 30/03/2014, 06:20

... the "Ansa" new agency, for a total of about million words; addition of just 50,000 words of inter-office memoranda made the perplexity of another test set of such memoranda (on a 3000-word vocabulary) ... approach, based on the theory of M a r k e r Sources (as outlined in ['3], [g]) The latter can be said to stern from a generalization of A generalization of the backing-off methodology first proposed ... measure of difficulty of speech recognition tasks, 94th Meeting Acoustical Society of America, Miami Beach, FL, December 15, 1977 [7] This idea leads to strictly more pessimistic estimates of reliability...

Ngày tải lên: 01/04/2014, 00:20

... classes of groups that are closed Let S be a class of classes of groups and suppose that every intersection of members of S belongs to S: for example, S might consist of the closed classes of a ... Therefore the class Nc of nilpotent groups of class at most c, the class S(d) of soluble groups of derived length at most d, the class E(n) of groups of exponent at most n, the class U of supersoluble ... point of the theory of classes of groups is the attempt to develop a generalised Sylow theory, which leads to an investigation into the problem of the existence of certain conjugacy classes of subgroups...

Ngày tải lên: 12/05/2014, 01:59

... proximity to trade finance professionals increase the likelihood of the use of trade finance products? This is one of the fundamental questions of the dissertation A goal of this research is to determine ... getting international finance professionals to call on them regardless of location Research Context Many banks offer various levels of trade services such as letters of credit and currency exchange ... guarantee high levels of profitability and there are other measures of export success (e.g growth, market diversity, profitability, and more) Exporting is critical to the importance of regional and...

Ngày tải lên: 03/06/2014, 02:14

... RAPET of silanes is yielding the smallest reported SiC particles having the highest surface area The RAPET of empty Coca Cola bottles yields micron size carbon spheres with a tensile strength of...

Ngày tải lên: 11/06/2014, 12:29

... half (50.4%) of the caregivers of children with controlled asthma reported that their child had missed a day of school due to asthma in the past year, while 64.4% of caregivers of children with ... measures are standardized with a mean of 50 and standard deviation of 10 to reflect general US population norms for children The demographics of caregivers of children with uncontrolled versus ... decreased overall productivity and the concerns of caring for their child, issues of job security may also be of concern for parents A number of studies have highlighted an association between...

Ngày tải lên: 20/06/2014, 16:20

... end caps of nanotubes, without significantly changing their desirable properties [6] This process is called functionalization of nanotubes A large number of methods are being used for the functionalization ... for functionalization of MWCNTs is the chemical route followed for their treatment even though dispersion assists in the unbundling of CNTs Functionalization also assists in the dispersion of ... these prepared samples and their codes are given in Table 1, and the methods of functionalization of each sample MWCNT are given as follows FPCNT01 Forty milligrams of MWCNTs had been taken, and...

Ngày tải lên: 20/06/2014, 22:20

... the wastewater of a sewage plant, we observed the special features of MNBs that collected surrounding impurities on their surfaces The detailed investigation of obtained TEM images of the same wastewater ... Illustrations of adsorption properties of MNBs in wastewater and of their quenching features (a) The original wastewater (WW) includes both impurities (small dots) and several amounts of MNBs (B) ... existed around them on their surfaces and concentrated impurities during their residence time until quenching This is the first direct observation of a typical property of MNBs, that is, MNBs...

Ngày tải lên: 21/06/2014, 04:20

... behaviour of nanofluids so far and the possible mechanisms for the increment of thermal conductivity of the nanofluids are as follows [43-63]: I Brownian motion of nanoparticles: The Brownian motion of ... SiO2 nanofluid [77] Chen et al categorized the rheological behaviour of nanofluids into four groups as dilute nanofluids, semidilute nanofluids, semi-concentrated nanofluids, concentrated nanofluids ... treatment of components Boiling heat transfer characteristics of nanofluids The alteration of thermophysical properties, especially the enhancement of the thermal conductivity, of the nanofluid...

Ngày tải lên: 21/06/2014, 04:20