provision of silver gold and token coinage

báo cáo hóa học: " Structural and thermal studies of silver nanoparticles and electrical transport study of their thin films" pdf

Ngày tải lên : 21/06/2014, 02:20

... http://www.nanoscalereslett.com/content/6/1/434 Page of A B Figure FETEM and HRTEM images of silver nanoparticles (a) FETEM image of silver nanoparticles (b) High-resolution image of a single silver nanoparticle and inset shows ... determine the intrinsic stress and dislocation density of silver nanoparticles and found to be as 0.275 GPa and 7.0 × -14 m-2 respectively Figure shows the FESEM image of silver nanoparticles It exhibits ... Page of Figure DTA-TGA themogram of silver nanoparticles and above 300°C It can be generally attributed to the evaporation of water and organic components Overall, TGA results show a loss of 14.58%...

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Báo cáo hóa học: " Aqueous-Phase Synthesis of Silver Nanodiscs and Nanorods in Methyl Cellulose Matrix: Photophysical Study and Simulation of UV–Vis Extinction Spectra Using DDA Method" docx

Ngày tải lên : 21/06/2014, 17:20

... nanoparticles, b (i) HR-TEM of red-coloured silver sol and (ii) SAED pattern of the corresponding sol and c (i) HR-TEM of green-coloured silver sol and (ii) SAED pattern of green sol 123 3-3.9 4-4.9 ... of *55 nm On the other hand, HR-TEM photograph of green-coloured silver sol (Fig 1c), obtained by using mM of sodium citrate, shows the presence of only silver nanorods of different aspect ratios ... quadrupole resonance The band at *800 and *420 nm are due to in-plane dipole resonance (longitudinal) and out-ofplane dipole resonance (transverse) of silver nanorods Simulation of UV–vis Extinction...

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Synthetic and structural studies of copper, gold and palladium heterocyclic carbene complexes

Ngày tải lên : 11/09/2015, 09:12

... However, most of these studies were focused on Pd-, Ni-, Ru- and Rh-NHC complexes NHC complexes of copper and gold have been relatively overlooked in spite of the wide use of copper and gold in catalysis, ... enriching the knowledge of copper, gold and palladium NHC complexes, the results of this research will be instructive for mechanistic study and future designs of copper, gold and palladium NHC catalysts ... Another key focus is on the application of copper and gold NHC complexes in catalysis and medicine 50 Recent developments in the chemistry of copper and gold NHC complexes are summarized herein...

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Báo cáo hóa học: "Photochemically reduced polyoxometalate assisted generation of silver and gold nanoparticles in composite ﬁlms: a single step route" pptx

Ngày tải lên : 22/06/2014, 22:20

... The positive shift of the BE energy of nanoparticles with respect to that of bulk metal is consistent with that reported in literature [31] The photoluminescence of silver and gold metals is generally ... the higher wavelength and broadening of the surface plasmon absorption band upon incorporation of silver in the composite ﬁlm is induced by the change in dielectric constant of the environment around ... suitable dipping time intervals and concentration of metal ions solutions As the concentration of AgNO3 is increased, the intensity of the surface plasmon band increases and the absorption shifts to...

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Shape controlling of silver and gold nanocrystals

Ngày tải lên : 14/09/2015, 08:43

... H2O2 and O2 are employed in controlling the shapes of nanocrystals in solution growth of silver and gold nanocrystals To produce silver and gold nanoprisms, weak reductants or precursor of reducing ... scale bar in a and b is 100 nm) image of sample A1 (a) and E1 (b) without centrifuge separation and SAED of sample A1(c) Figure 5-3 UV-Vis spectrum of silver nanocrystals The shapes of silver nanocrystals ... FESEM image of gold nanospheres covered by melting membrane of gold produced from thin gold nanoplates prepared by MSA in place of citric acid Figure 6-7 Powdered XRD of gold nanoprisms of sample...

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Fabrication of hydrophobic surface on the gold and silver surface

Ngày tải lên : 06/10/2015, 20:42

... underpotential silver deposition, and roughness control of silver electrodeposition from silver nitrate Electrodeposited micro- and nanostructures of silver have been exploited for a wide range of applications, ... complex ion, a and b: lowest part of the sample with magnification 1000 and 10000; c and d: middle part of the sample with magnification of 2000 and 20000; e and f: upper part of the sample with ... FABRICATION OF HYDROPHOBIC SURFACE ON THE GOLD AND SILVER SURFACE ZHAO AIQIN A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF SCIENCE DEPARTMENT OF CHEMISTRY NATIONAL UNIVERSITY OF SINGAPORE 2008...

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Postal Savings and the Provision of Financial Services: Policy Issues and Asian Experiences in the Use of the Postal Infrastructure for Savings Mobilization pdf

Ngày tải lên : 15/03/2014, 09:20

... function [“Role and Impact of Savings in West Africa: A Case Study of Benin and Mali” B Kalala, UNDP, 2001] 5 Postal Savings and the Provision of Financial Services C Giro: safe and cost-effective ... “lender of last resort” 7 Postal Savings and the Provision of Financial Services widely seen as part of the agenda of Germany’s commercial banks to force the privatization and then take over the Landesbanks ... spiral of loss of revenues to the posts, which forced the closing of 65 per cent of Finland’s post offices between 1990 and 1995, following the first large-scale fee reduction in 1990 The number of...

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Andreas Gramzow Rural development as provision of local public goods: Theory and evidence from Poland pdf

Ngày tải lên : 23/03/2014, 08:21

... biodiversity protection of some areas, as well as change the cultural landscape of the concerned regions The condition of the local landscape influences the image of a region and fallowed land can reduce ... differentiation of landscapes between both cultural and natural landscape Cultural landscapes are further subdivided into industrial landscapes, cityscapes and agricultural landscapes Particularly ... Classification of the term landscape Landscape Cultural landscape Industrial landscape Cityscape Natural landscape Agricultural landscape Source: KNIERIM, 1994, p 174 Many authors assign cultural landscapes...

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Báo cáo khoa học: " Development and Use of a Gold-Standard DataSet for Subjectivity Classifications" pdf

Ngày tải lên : 23/03/2014, 19:20

... i.e., the number of values of L, and produces estimates of the 249 The judges are given lists of sentences for which their tags differ from the biascorrected tags Judges M, D, and J participate ... all conditionally independent of one another, given the value of the latent variable The latent variable represents the true state of the object, and is the source of the correlations among the ... judge and the columns correspond to the tags assigned by judge Let nij denote the number of sentences that judge classifies as i and judge classifies as j, and let/~ij be the probability that a randomly...

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Third-Party Provision of Ancillary Services; Accounting and Financial Reporting for New Electric Storage Technologies doc

Ngày tải lên : 29/03/2014, 20:20

... restrictions on third-party provision of ancillary services, irrespective of the technologies used for such provision; and (2) the adequacy of current accounting and reporting requirements as ... restrictions on third-party provision of ancillary services, irrespective of the technologies used for such provision; and (2) the adequacy of current accounting and reporting requirements as ... portfolio of generation resources, entry of new technologies seeking to provide the services, and the growing interest of sellers and 12 Uniform System of Accounts Prescribed for Public Utilities and...

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Báo cáo hóa học: " Effects of silver impurity on the structural, electrical, and optical properties of ZnO nanowires" doc

Ngày tải lên : 20/06/2014, 22:20

... structure because of both low Ea and optimized quantity of substitution function of Ag+ [19] However, stress of lattices structure on both 3SZO and 5SZO NWs is very impressive because a lot of Ag interstitials ... in acetone and methanol for 20 and rinsed in de-ionized water for The 1, 3, and wt % SZO (5SZO) NWs are grown in a furnace at 800°C with argon gas of 90 sccm and a working pressure of 1.2 torr ... images of various SZO NWs grown using 1, 3, and wt.% Ag-doped ZnO ceramic targets As shown in Figure 1a, b, the distribution of the SZO NWs is random, with the average diameter of about 60 nm and...

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Báo cáo hóa học: " Shape-tailoring and catalytic function of anisotropic gold nanostructures" doc

Ngày tải lên : 20/06/2014, 22:20

... polymers or surfactants and harsh reductants Results and discussion Gold nanoparticles were synthesized by mixing appropriate concentrations of solutions of AuCl - and Page of 12 detergent at room ... carried out the reduction reaction of 4-nitrophenol by NaBH4 Figure Nanoflower and satellite-like structures of AuNPs (a) “Nanoflower” and (b, c) “satellite structures” of AuNPs Premkumar et al Nanoscale ... the Ministry of Education, Science and Technology (MEST) of Korea (Project no R31-10026) Author details Department of Materials Science and Engineering, Gwangju Institute of Science and Technology...

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Báo cáo y học: "Correction: Biofabrication of anisotropic gold nanotriangles using extract of endophytic Aspergillus clavatus as a dual functional reductant and stabilizer" potx

Ngày tải lên : 21/06/2014, 04:20

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Báo cáo hóa học: " Biofabrication of Anisotropic Gold Nanotriangles Using Extract of Endophytic Aspergillus clavatus as a Dual Functional Reductant and Stabilizer" potx

Ngày tải lên : 21/06/2014, 08:20

... the biofabrication of silver nanoparticles [4], but no reports are available about their potential in biofabrication of gold nanoaparticles This strain is largest among the Aspergillus spp and ... of nm Similarly, the broth extract of the endophytic strain is also utilized for bioreduction of aqueous gold ion solution In a flask, 90 ml of aqueous mM HAuCl solution was taken and 10 ml of ... challenged with aqueous gold ions for 72 h The thin sections of fungal cells shows the presence of plenty of triangular, hexagonal and spherical gold nanoparticles bound to the surface of the cells (Figure...

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Báo cáo hóa học: " On the Morphology, Structure and Field Emission Properties of Silver-Tetracyanoquinodimethane Nanostructures" pptx

Ngày tải lên : 21/06/2014, 17:20

... more and smaller particles upon heating, and higher rate of diffusion dominates, the nanowires grow seemingly in succession without obvious tips on the surface In addition, the thickness of silver ... 393 and 423 K As a whole, most of them are vertical to the substrate with a sharp tip The diameter varies from 50 to 150 nm Figure shows the top view for samples with 10, 30 and 50-nm-thick silver ... is shown that the density of the nanowires becomes larger, and the orientation perpendicular Fig SEM top-view images of Ag-TCNQ nanowires, with 30 nm Ag ﬁlm at 393 and 423 K, respectively 123...

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Báo cáo hóa học: " Bioconjugates of Glucose Oxidase and Gold Nanorods Based on Electrostatic Interaction with Enhanced Thermostability" ppt

Ngày tải lên : 22/06/2014, 00:20

... formation of the seed solution After h, this seed solution was used for the synthesis of the GNRs In a ﬂask, 75 mL of 0.2 M CTAB was mixed with 1.5 mL of mM silver nitrate aqueous solution and 75 mL of ... better than that of the free enzyme and even better than the reported results for GOD immobilized on planar substrates, polystyrene nanoparticles, and spherical gold nanoparticles Gold nanorods ... ?33.2 mV due to the presence of a bilayer of cationic CTAB on the surface of the GNRs When the negatively charged PSS and the positively charged 123 Fig A UV–Vis spectra of CTAB-stabilized GNRs (curve...

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Báo cáo hóa học: " Silver Nanoparticles and Graphitic Carbon Through Thermal Decomposition of a Silver/Acetylenedicarboxylic Salt" ppt

Ngày tải lên : 22/06/2014, 00:20

... Ag/sol and Ag/pyr samples are presented in Fig Both spectra are typical of the formation of sp2 carbon bonds according to the appearance of a band at 1,590 cm-1 (G-band), while a lower percentage of ... thermal decomposition of the silver acetylenedicarboxylate salt, which leads to the reduction of silver cations to metallic nanoparticles and the simultaneous formation of a carbon coating Two ... either thermolysis of the silver salt or thermal decomposition in the solid state Given the dramatic effect of several metal nanoparticles on the growth and morphology of a series of intriguing carbon...

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Báo cáo hóa học: " Fabrication of Worm-Like Nanorods and Ultraﬁne Nanospheres of Silver Via Solid-State Photochemical Decomposition" pot

Ngày tải lên : 22/06/2014, 01:20

... XRD patterns of (a) Ag nanorods synthesized using 1:5 ratio of Ag2C2O4 and CTAB and (b) and (c) nanospheres synthesized using 1:5 ratio of Ag2C2O4 and PVP and 1:2 ratio of Ag2C2O4 and CTAB, respectively ... coefﬁcients of (a) Ag nanorods synthesized using 1:5 ratio of Ag2C2O4 and CTAB, and (b) and (c) nanospheres synthesized using 1:5 ratio of Ag2C2O4 and PVP and 1:2 ratio of Ag2C2O4 and CTAB, respectively, ... crystallite sizes of (a) Ag nanorods synthesized using 1:5 ratio of Ag2C2O4 and CTAB and (b) and (c) nanospheres synthesized using 1:2 ratio of Ag2C2O4 and CTAB and 1:5 ratio of Ag2C2O4 and PVP, respectively,...

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Báo cáo hóa học: "Nanocrystal and surface alloy properties of bimetallic Gold-Platinum nanoparticles" pdf

Ngày tải lên : 22/06/2014, 22:20

... correlation of the Au-atop and Pt-atop CO bands on the surface of the alloy nanoparticles of a wide range of bimetallic composition with the electronic effect as a result of the d-band shift of Pt ... Pt65/SiO2, and (i) Pt/SiO2 Such a dependence of the CO bands on the bimetallic concentration is remarkable, and is to our knowledge observed for the ﬁrst time The higher-frequency band Fig Plot of the ... Au-atop and Pt-atop CO bands vs the composition of Au in the alloy AuPt nanoparticles The length of the bars represents half of the peak width (determined from the full width at half of the peak...

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Báo cáo lâm nghiệp: "Nutrition of silver fir (Abies alba Mill) growing at the upper limit of its occurrence in the Šumava National Park and Protected Landscape Area" pot

Ngày tải lên : 07/08/2014, 10:21

... current year needles of fir taken in 2006 and 2007 in the Bohemian Forest, in the mature stands growing predominantly above 1,100 m a.s.l Material and methods Samples of silver fir needles were ... needles of fir was found; in the samples from Slovakia and Poland, the values ranged from 10,400 to 15,500 mg·kg–1 The regulation of water regime is one of the most important functions of potassium, ... Programme on Assessment and Monitoring of Air Pollution Effects on Forests Manual on methods and criteria for harmonized sampling, assessment, monitoring and analysis of the effects of air pollution...

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