electrochemical preparation and properties of novel

... SYNTHESES, STRUCTURES AND PROPERTIES OF NOVEL POLY(AMINO ESTER)S WU DECHENG NATIONAL UNIVERSITY OF SINGAPORE 2005 SYNTHESES, STRUCTURES AND PROPERTIES OF NOVEL POLY(AMINO ESTER)S WU ... hindrance of polymer backbones. On the basis of the understanding of the unequal reactivity of three types of amines in trifunctional amine monomers, three novel approaches to linear and hyperbranched ... DECHENG (M. Sc. University of Science and Technology of China) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CHEMISTRY NATIONAL UNIVERSITY OF SINGAPORE 2005 Name:

Ngày tải lên: 16/09/2015, 15:53

... ACADEMY OF SCIENCE AND TECHNOLOGY GRADUATE UNIVERSITY SCIENCE AND TECHNOLOGY …… ….***………… CHU ANH VAN STUDY ON PREPARATION AND PROPERTIES OF RUBBER NANOCOMPOSITE MATERIALS BASED ON SOME KINDS OF RUBBER ... surfactant (c) 2.2.5 Research methods of structure and properties of denatured CNT The structure and properties of denatured CNT are determined by means of Infrared Radiation (IR) on the FTS-6000 ... scientific and practical values Derived from these reasons, the thesis aims to the issue: “Study on preparation and properties of rubber nanocomposites material based on some kinds of rubber and its

Ngày tải lên: 17/01/2020, 16:06

... Therefore, study of the compatible effects of SAN and PP matrix is necessary in order to systematically Page of 10 examine the effect of SAN on the mechanical and thermal properties of PP matrix ... stream of pure nitrogen flowing at a rate of 50  ml/min and heated at 10  °C/min from 25 to 220 °C The degree of crystallinity (­Xc) of PP was determined by calculating the ratio of heat of fusion ... fusion (△Hm) of the specimens to the heat of fusion of 100% crystalline PP (△Hm = 207 J/g) [35] Mechanical properties testing Measurements of the tensile strength and elongation at break of all specimens

Ngày tải lên: 29/05/2020, 13:11

... both the presence and absence of catalyst and the yield of (84%) in the presence of catalyst was significantly higher than that in the absence of catalyst (49%) The IR spectra of 5–8 were similar ... aggregation behavior of 4–8 in pyridine was investigated using UV-Vis spectroscopy (Figures 2a–2e and 3a–3e) When the concentration of 5–8 was increased, no new bands and no shift of the Q band were observed ... the decomposition of polymers and weakly protonation of the meso nitrogen atoms in the core of each phthalocyanine unit 2.2 DSC and DTG/TGA measurements Thermal properties of 3–8 were investigated

Ngày tải lên: 12/01/2022, 23:25

... value of n ranges between 0.8 and 1.0, suggesting the capacitive response of CPE The EIS parameters such as Rct, Rs and CPE and the calculated values of percentage of inhibition (ηEIS%) of MS ... physical and chemical properties of electrochemical system under examination The simple equivalent circuit that fit to many electrochemical system composed of a double layer capacitance, Rs and Rct24,25 ... HOMO of PHMT2YBA to the vacant d-orbitals of Fe The probability of acceptance of electrons from the metal surface to the LUMO of lowest energy of the inhibitor is the greatest The number of electrons

Ngày tải lên: 27/05/2020, 05:23

... porphyrin nano- and micro-particles made up of J- and H-heteroaggregates to date [26]. The photocatalytic and photoelectronic properties of TiO 2 sensitized with this type of porphyrin nano- and micro-particles ... microenvironment of the porphyrin moiety [32]. The occurrence of the new band at 424 nm and intensity decreasing of the Soret band imply the aggregation of the free porphyrins. The band at 424 nm ... size distribution of the particles. The sta- bility of the particles in different conditions and electrochemical properties are explored. The investigation of photoelectrochemical and photocatalysis

Ngày tải lên: 22/06/2014, 01:20

... for design of stable and efficient replication-competent vectors of SFV4 and for selection of conditions for their propagation Comparison of reported properties of replication-competent ... elements The length and positioning of duplicated SG promoters in the genome of the replication-competent vector allows modulation of the level of expression of the protein of interest (Figure ... stability of replication-competent alphavirus vectors. Expression of the protein of interest as part of a structural or ns polyprotein strictly links the time and level of its expression with those of

Ngày tải lên: 12/08/2014, 04:21

... OPTIMIZATION AND APPLICATIONS OF NOVEL ELECTROCHEMICAL SENSORS BASED ON PRUSSIAN BLUE ANG JIN QIANG (B.Sc.Hons National University of Singapore) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY ... department office of the Department of Chemistry and the Lab Supplies The guidance by the lecturers of the graduate modules and the QE panel are gratefully acknowledged The assistance from the admin officer ... determinations of Na+ and K+ had been limited to simple proof -of- concept studies which were intended to ascertain that the processes of Na+-inhibited K+ intercalation and competing Na+-inhibited and direct

Ngày tải lên: 10/09/2015, 09:13

... INVESTIGATION OF NEW PROPERTIES AND APPLICATIONS OF QUADRUPLEX DNA AND DEVELOPMENT OF NOVEL OLIGONUCLEOTIDEBASED TOPOISOMERASE I INHIBITORS WANG YIFAN NATIONAL UNIVERSITY OF SINGAPORE 2008 ... of the distinctive properties of DNA is the elastic properties of double strand DNA (dsDNA) which leads to desired bending... Polymorphism of G -quadruplex Structures One of ... Structure of DNA 10 10 1.3.1. Discovery of i-Motif Form of DNA 11 1.3.2. Stoichiometries and Topologies of i-Motif DNA 11 ii 1.3.3. Possible Biological Role of i-Motif Structure of DNA

Ngày tải lên: 11/09/2015, 16:04

... b a b c College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, ... of the total energy consumption of tire Accordingly, it is * Corresponding author Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of ... G0 -ε% and tand-ε% curves of vulcanizates (60  C) improve the silica-rubber linkage and silica dispersion in rubber matrix From tand-ε% curve, tand value of 1# vulcanizate is the highest and increases

Ngày tải lên: 11/06/2016, 22:43

... adduct and the GG interstrand adduct, which account for 20, and % of all DNA adducts, respectively [10] In eukaryotic cells, telomeres consist of G-rich sequences, consisting of tandem repeats of ... the N7 position of purine bases (guanine and adenine) [10], resulting in the formation of monofunctional and bifunctional DNA adducts The majority of DNA adducts occur as a result of cisplatin binding ... composed of seven telomeric repeats consisting of TTAGGG (T1-T7), a site of four consecutive guanine bases (G4), two sites of three consecutive guanine bases (G3I and G3II) and a site of five

Ngày tải lên: 21/09/2020, 01:28

... optical properties of the polymer were investigated via UV-Vis and PL spectrometer The novel conjugated polymers have been expected to have a narrow band-gap and redshift absorption and could ... optical properties of novel conjugated polymer based on thiacalix[3]triazine and 3hexylthiophene Ho Chi Minh City University of Education Journal of Science, 18(3), 414-424 414 HCMUE Journal of Science ... FTIR, and GPC to determine the chemical structure as well as the molecular weight of polymers The optical properties of polymer were then investigated by UV-Vis and PL to found its bandgap and

Ngày tải lên: 28/06/2021, 10:09

... former) and 1736 cm −1 (in the latter) and the bands of C=C stretching vibrations of aromatic groups at about 1602 and 1502 cm −1 , besides the characteristic absorption bands of CH and CH groups of ... Figures 13a and 13b Figure 13 H-NMR spectra of a) BPCPA and b) BPCPMA 3.2 Polymerization and thermally induced graft copolymerization of BPCPA and BPCPMA onto PP The monomers, BPCPA and BPCPMA, ... groups of PP chains The bands at 980 and 906 cm −1 observed in the spectrum of BPCPA and at about 950 and 941 cm −1 in the spectrum of BPCPMA, ascribed to the vinylic C-H out -of- plane bending vibrations,

Ngày tải lên: 13/01/2022, 00:03

... [19] β-Carotene solution was composed of mg of β-carotene, 44 μl of linoleic acid, and 200 μl of Tween 80 dissolved in 10 ml of chloroform To eliminate chloroform, the mixed solution was evaporated ... Article Review jmb Probiotic and Antioxidant Properties of Novel Lactobacillus brevis KCCM 12203P Isolated from Kimchi and Evaluation of ImmuneStimulating Activities of Its Heat-Killed Cells in ... substances [34] Cytotoxicity and NO Productive Capacity of Viable and Heat-Killed LAB MTT and NO assays were used to measure the cytotoxicity and NO productivity of L rhamnosus GG and L brevis KCCM 12203P

Ngày tải lên: 01/03/2022, 22:29

... Master of Science (Chemistry) This thesis is presented as part of the requirements for the award of the Degree of Doctor of Philosophy of the University of Wollongong School of Chemistry and Molecular ... Thai, Synthesis and Quadruplex DNA Binding Properties of Novel Nickel Schiff Base Complexes, Doctor of Philosophy thesis, School of Chemistry and Molecular Bioscience, University of Wollongong, ... University of Wollongong Research Online University of Wollongong Thesis Collection 2017+ University of Wollongong Thesis Collections 2019 Synthesis and Quadruplex DNA Binding Properties of Novel

Ngày tải lên: 22/11/2022, 16:16

... during the preparation of Co(II)PMMA-IICM 3.1.1 Effects of support membrane species The properties of the supporting membrane are one of the important factors affecting the selectivity and permeability ... total volume of 200 mL and an area of 1.5 cm2 at the joint of the two cells Then, 100.00 mL of an aqueous solution containing Co(II), Cd(II), and Cu(II) ions with identical concentrations of 25 mg ... accessibility, and quantity of recognition sites, thereby changing the mesh structure and adsorption properties of composite membranes [32] Fig shows the adsorption capacity of Co(II)-IICM3,7~12 and NICM3,7~12

Ngày tải lên: 20/12/2022, 23:14

... diameter of the PVDF membrane, the PVDF-PS membrane and the PVDF-SPS membrane is 0.25 µm, 0.12 µm and 0.16 µm, respectively It can be seen that the polymerization of styrene and the blending of PS and ... membrane, and the selectivity (the ratio of proton conductivity and methanol permeability) of the composite membrane is almost 20 times than that of Nafion-117 Copyright © 2010 International Energy and ... polymerization and phase inversion, and all of the other reagents were analytical grade 2.2 Preparation of the PVDF-based composite membrane The PVDF powders were basified firstly, and the double bond was

Ngày tải lên: 05/09/2013, 16:11

... and angles) of O, W and Ti are expected but, not surprisingly, are too small to be detectable as shifts of W 4f and Ti 2p core level BEs and cannot be resolved in STM images. The appearance of ... supports makes it difficult to gain control of cluster size in preparing samples, and mass control of deposited species has been limited to soft-landing of gas-phase mass- selected charged species ... WO 3 nm À2 and metallic W. Fig. 2. Linear correlation of W NVV /Ti LMM AES ratio and W 4f intensity with amount of deposited WO 3 , the latter is plotted in units of WO 3 nm À2 based QCM measurement of

Ngày tải lên: 20/03/2014, 13:06

... the effect of a mutation in this part of the molecule on the structure and properties of human sHsp Oligomeric structure of HSP22 and its mutants All samples of recombinant HSP22 and its mutants ... The N- and C-terminal domains are indicated by N and C correspondingly All b-strands are numbered and the b5 and b7 strands are shown in red and blue, respectively G104 (equivalent to K137 of human ... To understand the role of this part of molecule in the structure and function of small heat shock proteins, we mutated two highly conservative residues (K137 and K141) of human HSP22 and investigated

Ngày tải lên: 23/03/2014, 07:20

... Carroll 4 , Irena Pastuszak 1 and Alan D. Elbein 1 1 Department of Biochemistry and Molecular Biology and 4 Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, ... The enzymatic properties of recombinant TreS were identical to those of enzyme purified from the mycobacterial extract. Properties of the TreS purified from M. smegmatis Effect of time and protein ... a number of individual papers can be s treaked with the sugar solution and all run at the same time in the same solvent. Standards of trehalose and maltose are applied to the sides of the paper

Ngày tải lên: 23/03/2014, 13:20