hyperbranched and dendritic polyolefins prepared by transition metal catalyzed polymerization
Study on kinetics of electro-optical and photoluminescent processes in nanostructured transition metal (W, Mo) oxide-based thin films
... Overview of transition metal (W, Mo) oxides and their electrochromic properties 1.1 Introduction of transition metal In chemistry, the term transition metal (sometimes also called a transition ... data by Hill and Egdell and Hollinger et al showed that the metal- nometal transition at x ≈ 0.2 was due to localization in a pseudogap between an impurity band and the WO3 conduction band, which ... metal - semiconductor transition at the very end of metallic behavior of much smaller particles The size at which the transition occurs depends on the type of metal and criterion chosen for metallicity...
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Design and applications of phosphine ligands to transition metal catalyzed reactions
... Phosphine Ligands Derived from Amino Acids and Their Applications in Transition- Metal- Catalyzed Asymmetric Reactions 4.1 Introduction 139 4.2 Results and discussions 145 4.2.1 Phosphine-amide ligands ... Phosphine-olefin ligands 167 4.4.2.6 Phosphine-imine ligands 168 4.4.3 General procedure for transition- metal- catalyzed reactions 169 4.4.3.1 Pd -catalyzed AAA reaction 169 4.4.3.1 Ag -catalyzed Mannich ... chiral ligands derived from amino acids, including phosphine-amide ligands, phosphine-peptide vi ligands phosphine-olefin ligands and phosphine-imine ligands These newly developed ligands were...
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Development of transition metal catalyzed c s and c c cross coupling reactions
... Transition- Metal- Catalyzed C—S and C—C Cross-Coupling Reactions SUMMARY The transition- metal- catalyzed carbon-carbon and carbon-heteroatom bond forming reactions are important and fundamental transformations ... based on transition- metal- catalyzed cross-coupling reactions between thiols or disulfides and aryl halides The newer copper and palladium based methodologies allow for the rapid, direct and efficient ... Introduction Scheme 1.1: Non -Metal- Mediated preparation of aryl sulfides Chapter 1: General Introduction 1.2 Transition metal- catalyzed cross-coupling reactions The use of transition- metals as catalysts...
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Multiphoton absorption and multiphoton excited photoluminescence in transition metal doped znsezns quantum dots
... enlarged the 2PA and 3PA crosssections The later was mainly caused by the introduction of new doping and defect energy levels by the incorporated transition metal ions Transition metal doping provided ... fitted lowest band, second band, third band and size distribution of un-doped and Cu-doped ZnSe/ZnS QDs (Page 77) Table 3.2 QD density, diameter, bandgap energy and 3PA of bulk and QD semiconductors ... Coefficients an, bn, and cn when p0 and q0 [4.7] (Page 98) Table 4.2 The Gaussian fitted lowest band, second band, third band and size distribution of un-doped and Cu-doped and Mn-doped ZnSe/ZnS...
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structural and electrochromic properties of tungsten oxide prepared by surfactant-assisted process
... Spectroelectrochemical and monochromatic Fig Survey scan XPS spectra (a) and W 4f high-resolution XPS spectra (b) for tungsten oxide films of sample A, sample C and sample D, and O 1s level peak ... achieved by reduction at À1 V vs SCE, and the bleached state was obtained by oxidization at +1 V vs SCE The response of color change to the potential on the working electrode was evaluated by the ... of sample A, sample C and sample D deposited on ITO glass substrates are shown in Fig It could be seen that the (2 2), (4 0) and (4 0) peaks located at about 30.21, 35.11 and 50.51, respectively...
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synthesis and characterization of wo3 nanostructures prepared by an aged-hydrothermal method
... [(NH4)10W12O41xH2O] (0.15 mol of W) was prepared and acidified with HNO3 2.2 N (Normal) to produce a pH around and then kept in a flask hermetically sealed with stirring by one week at 60 °C Then, ml of ... the detector; and a computer-controlled XY stage with a spatial resolution of 0.1 µm with two interchangeable gratings (600 and 1800 g mm− 1) and a confocal microscope with 10, 50, and 100× objectives ... of the material for the peaks O1 s and W4f are shown in Fig 6a and b respectively Peaks position for O1 s is 530.3 eV and binding energy peak located at 35.4 and 40.6 eV is attributed to W4 f...
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wo3 thin film sensor prepared by sol–gel technique and its low-temperature sensing properties to trimethylamine
... , CO, and water vapor were measured A given amount of each gas was injected into the chamber and mixed by a fan for 30 s The sensitivity to gases, S, is defined as S = V g /V a , where Vg and Va ... 4f5/2 and W 4f7/2 are found to lie at 37.1 and 35.20 eV, respectively and are contributed to lattice tungsten in the WO3 crystal 3.2 Gas sensing properties of the thin film sensors Results and discussion ... C, but not sensitive to NH3 , gasoline, C2 H5 OH, CH4 and CO and water vapor These results indicate that the WO3 thin film sensor prepared by a sol–gel Fig X-ray photoelectron spectra of the thin...
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Báo cáo " Silver nanoparticles prepared by laser ablation and their optical characteristics " pptx
... silver nanoparticles prepared by laser ablation (a) and by chemical reduction (b) Fig Absorption spectra of silver nanoparticles produced by laser ablation in a 0.003, 0.01 and 0.1M solution of ... also prepared silver nanoparticles by chemical reduction from an aqueous solution of silver nitrate and trisodium citrate dihydrat C6H7Na3O7 (SCD) which takes the role of both surfactant and reducing ... particles produced by chemical reduction shifted to 440 nm as compared to 400 nm by laser ablation The peak width of silver nanoparticles by laser ablation is narrower than that by chemical reduction...
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báo cáo hóa học:" In vitro generation of cytotoxic and regulatory T cells by fusions of human dendritic cells and hepatocellular carcinoma cells" docx
... SK, MM, AT, EN, and, YN prepared reagents and PBMCs SH, HK, and YS prepared fusion cells and performed vaccination of the patient TO, KF, JG, and HT participated in its design and coordination ... demonstrated by: 1) augmented DCs function; 2) improved production of IFN-γ in both CD4+ and CD8+ T cells and T-cell proliferation; 3) enhanced induction of CEA and/ or WT1-specific CTL responses; and ... WT1 and HLA-ABC and low levels of CEA but not HLA-DR, CD80, CD86, and CD83 molecules (Figure 1B, 2A, and 5A) Fusions of DCs to the HCC cells coexpressed the HCC cells-derived WT1 antigens and...
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Indian and Northern Affairs Canada Internal Audit Report Financial Audit of the Settlement Allotment Prepared by: Audit and Assurance Services Branch April 9, 2009 pptx
... a mandate to settle is prepared The INAC report and DOJ recommendation are presented to a Litigation committee co-chaired by management representatives from INAC and DOJ If the settlement mandate ... settlement and provides a recommendation as to liability and appropriate damages The settlement recommendation is reviewed by the departmental client, INAC and if it is consistent with policy and operational ... between Model A claims and Model B claims has been abandoned Other changes included making the compensation grid national and expanded in scope, as opposed to regional and establishing the independence...
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Báo cáo hóa học: " Fabrication and characterization of carbon-based counter electrodes prepared by electrophoretic deposition for dye-sensitized solar cells" doc
... next sealed by the surlyn polymer foil and a cover glass The deposited SWNTs, graphenes, and carbon composites were characterized by field-emission scanning electron microscopy [FE-SEM] and ultraviolet-visible ... work was supported by the Korea Industrial Technology Association (KOITA) Authors’ contributions HK fabricated the cells and wrote the paper HK and HC did the characterization and imaging of the ... of the solar cells SH and YK helped design the experimental study and advised on the project MJ developed the conceptual framework and supervised the work All authors read and approved the final...
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báo cáo hóa học:" Fabrication and characterization of carbon-based counter electrodes prepared by electrophoretic deposition for dye-sensitized solar cells" pot
... next sealed by the surlyn polymer foil and a cover glass The deposited SWNTs, graphenes, and carbon composites were characterized by field-emission scanning electron microscopy [FE-SEM] and ultraviolet-visible ... work was supported by the Korea Industrial Technology Association (KOITA) Authors’ contributions HK fabricated the cells and wrote the paper HK and HC did the characterization and imaging of the ... of the solar cells SH and YK helped design the experimental study and advised on the project MJ developed the conceptual framework and supervised the work All authors read and approved the final...
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Báo cáo hóa học: " Bi-Functional Silica Nanoparticles Doped with Iron Oxide and CdTe Prepared by a Facile Method" doc
... for 40 min, NaHSe prepared by 6.0 mg Te and 6.0 mg NaBH4 was added After h stirring, it was refluxed for h Silica coated iron oxide nanoparticles were prepared as described by our previous work ... combined iron oxide nanoparticles and CdTe by amino group In this study, we prepare bi-functional silica nanospheres doped with iron oxide nanoparticles and CdTe QDs by this protocol for the first ... nanoparticles and CdTe nanocrystals indicated QDs can be assembled on the silica surface by amino group, and Liu et al [20] have modified the surface of silica coated iron oxide nanoparticles with CdSe by...
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Báo cáo hóa học: " Magnetic and Cytotoxicity Properties of La12xSrxMnO3 (0 £ x £ 0.5) Nanoparticles Prepared by a Simple " pptx
... Results and Discussion Structural and Morphology Characterization The XRD results of the prepared LSMO nanoparticles at 600, 700, 800, and 900 °C for h are shown in Fig For LSMO samples prepared ... detailed morphologies of the prepared samples for all x values at 900 °C, revealed by SEM and TEM, are shown in Figs and 5, respectively The SEM images reveal that the prepared samples are spherical ... synthesized by citrate-gel route reported by Rajagopal et al [12], and higher than the value of 23 emu/g for La0.7Sr0.3MnO3 nanoparticles (*48 nm) synthesized by sol–gel route reported by Duan et...
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Báo cáo hóa học: " Tungsten Oxide Nanorods Array and Nanobundle Prepared by Using Chemical Vapor Deposition Technique" potx
... supported by NSF-EPSCoR and DoD grants We would like to thank Mr William’s assistance of Raman measurements, Mr Ortiz and Ms Hernandez for SEM and EDS measurements, Mr Esteban for XPS measurements and ... bands marked with K1 and K2 located in 770 cm–1 and 870 cm–1 which was shown in Fig 4a, were related to tungsten oxide Typical Raman peaks of crystalline tungsten oxide located at 700 cm–1 and ... energy side of each atomic tungsten peak By looking up the database of National Institute of Standard Technology (NIST), these shoulders were related to WO2 and WOx No specified carbon modified tungsten...
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Báo cáo khoa học " Characterization of stipe and cap powders of mushroom (Lentinus edodes) prepared by different grinding methods " ppt
... Insect and disease-free samples were chosen and cleaned The caps and stipes were manually separated and hot-air dried in an oven (DHG-9140, Qixing, Shanghai, China) at 45 °C for 32 h and 38 h, ... particle sizes of cap and stipe of 54.77 lm and 40.90 lm, respectively Shear pulverized powders were then ground and sheared by the strong force between the lapping wheel and rail of a YSC-701 ... mushroom powders In contrast to the powders prepared by shear pulverization, micronized powders had smaller particle size and higher fluidity, WSI, SC and protein and polysaccharide solubility These improved...
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Synthesis and electrochemical preformances of tribasic and tetrabasic lead sulfates prepared by reactive grinding docx
... such materials and the results compared with other standard 3BS and 4BS samples prepared by the usual chemical processes First capacity ŽAh kgy1 Second capacity ŽAh kgy1 3BS Žstandard sample ... behaviour of PbO active materials prepared from such precursors with the usual active materials prepared by the standard chemical routes Preparation of basic lead sulfates by reactive grinding 2.1 Experimental ... commercial STREM PbO Žmixtures of a- and b-PbO., commercial PROLABO lead sulfate, and pure PbO P PbSO4 prepared by reaction of 5.62 g PbO with 3.01 g H SO4 and 172 g H O at room temperature Scanning...
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Báo cáo toán học: "A Mathematical Bibliography of Signed and Gain Graphs and Allied Areas Compiled by Thomas Zaslavsky Manuscript prepared with Marge Pratt" pdf
... and “consistency” in vertex-signed graphs, and generalizable work on two-graphs (the set of unbalanced triangles of a signed complete graph) and on even and odd polygons and paths in graphs and ... D(Γ); Brown and Spencer e (1971a), Gordon and Witsenhausen (1972a) for D(Kt,t ); Harary, Lindstr¨m, o and Zetterstr¨m (1982a) for a result similar to Thm 1.] (SG: Fr, Rand) o S Alexander and P Pincus ... [corresponding to 0, +1, −1] for nonadjacency and positive and negative adjacency and a for simultaneous positive and negative adjacency Defines addition and multiplication of these symbols (p 8)...
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Báo cáo y học: "Improving therapeutic HPV peptide-based vaccine potency by enhancing CD4+ T help and dendritic cell activation" docx
... (TLR3) recognizes viral double-stranded RNA and its synthetic analog polyriboinosinic:polyribocytidylic acid (poly(I:C)) and induce inflammatory cytokines and dendritic cell activation (for review ... data and writing the manuscript XP participated in the design of the study and the statistical analysis CFH and TCW provided overall supervision and guidance for the project All authors read and ... Amigorena S: Antigen presentation and T cell stimulation by dendritic cells Annu Rev Immunol 2002, 20:621-667 Matsumoto M, Seya T: TLR3: interferon induction by double-stranded RNA including poly(I:C)...
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Group 10 and group 11 transition metal chemistry of benzimidazolin 2 ylidene and indazolin 3 ylidene ligands
... or by 12 Chapter metal complexes with a basic ligand For instance, a nickel complex with two aryloxofunctionalized NHCs could be prepared by treatment of the ligand precursor with NaN(SiMe3)2 and ... anionic co-ligands such as azido and isothiocyanato ligands, which are known since late 1960 in the transition metal chemistry of phosphines A 17 Chapter pioneering work by Beck and co-workers ... ligands is indicated by an IR band at 2032 cm-1 The H chemical shifts for the carbene ligand remain largely unaffected by the halo-azido exchange, and as expected, a multiplet at 7.14 ppm and...
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Tìm thêm: xác định các mục tiêu của chương trình xác định các nguyên tắc biên soạn khảo sát chương trình đào tạo gắn với các giáo trình cụ thể xác định thời lượng học về mặt lí thuyết và thực tế điều tra đối với đối tượng giảng viên và đối tượng quản lí điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 khảo sát thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu nội dung cụ thể cho từng kĩ năng ở từng cấp độ xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct mở máy động cơ lồng sóc mở máy động cơ rôto dây quấn các đặc tính của động cơ điện không đồng bộ đặc tuyến mômen quay m fi p2 đặc tuyến tốc độ rôto n fi p2 đặc tuyến dòng điện stato i1 fi p2 sự cần thiết phải đầu tư xây dựng nhà máy phần 3 giới thiệu nguyên liệu từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng 9 tr 25