set files and registers
Lead-Free Piezoelectrics pot
Ngày tải lên :
16/03/2014, 09:20
... polarization vector of rhombohedral (R) and tetragonal (T), orthorhombic (O), and monoclinic MC, MA, and MB phases The MA, MB, and MC notation is adopted following Vanderbilt and Cohen [16] unit cell is ... to continuously rotate in a plane and contributes to enhanced polarization and strain Vanderbilt and Cohen further suggested three monoclinic phases: MA, MB, and MC, according to their symmetry ... new phase acts as a structural bridge between the R and T phases At the same time, using a Landau–Devonshire approach, Vanderbilt and Cohen expanded the free energy to the eighth power in the polar...
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Báo cáo hóa học: " Fabrication of transparent lead-free KNN glass-ceramics by incorporation method" potx
Ngày tải lên :
22/06/2014, 00:20
... SE, GR, SS, TT, and KP conceive the research theme PY and KP designed methods and experiments, carried out the laboratory experiments, analyzed the data, interpreted the results, and wrote the ... results, and wrote the paper SE, GE, SS, and TT co-designed experiments, discussed, and analyzed the results and presentation All authors have contributed to, seen, and approved the manuscript Acknowledgments ... property and higher transparency In this work, KNN powders were first prepared by calcination, then mixed with SiO2 in a Pt crucible, and melted at a suitable temperature The quench and heat...
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study of wo3-based sensing materials for nh3 and no detection
Ngày tải lên :
20/03/2014, 13:08
... earth metals The materials of WO loaded with wt.% Mg, Zn, Mo and Re showed good responses both to NH and NO, and can be used for NH and NO gas sensors As a whole, these materials have low resistance ... 30-ppm NH and S s 4.00 for 40-ppm NO; WO q wt.% Mg, Zn, Mo and Re: S s 7.65, 5.06, 10.1, 9.46, respectively, for 30 ppm NH , and S s 5.87, 8.33, 5.00, 6.25, respectively, for 40 ppm NO., and fast ... fast response to NH and NO compared with pure WO The materials of WO loaded with wt.% Cr, La, Pr, Sm, Gd, Er, Tm and Yb showed good responses to NH , and hardly responded to NO, and the materials...
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Báo cáo toán học: " Reference-free time-based localization for an asynchronous target" pot
Ngày tải lên :
20/06/2014, 20:20
... (x) and I3 (x) based on model (39) in Section are derived in Appendix for the nonredundant set and the full set of TDOA measurements, respectively We consider three simulation setups In Setups and ... [200m, 30 m] and [10m, 20 m] for Setups DRAFT 22 and 2, respectively Thus, the target node is far away from the anchors in Setup 1, but close to them in Setup In Setup 3, all anchors and the target ... SNRr > 60 dB and SNRr > 30 dB for Setup and Setup 2, respectively Within this range of interest, there are no differences among the CRBs in Setup 1, and only small differences in Setup Therefore,...
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Báo cáo hóa học: " Electrical properties of lead-free " pdf
Ngày tải lên :
20/06/2014, 23:20
... The d33, kp, and relative density of 0.98NKN-0.02BZT ceramics sintered at 1,080°C are 201 pC/N, 0.33, and 88%, respectively and peaked their maximum values, which are 217 pC/N, 0.41, and 97%, respectively ... Chesterland, OH, USA) The kp was calculated by measuring the antiresonance and resonance frequencies The relative density of the sintered samples was measured by the Archimedes method Results and ... screen-printed on the surfaces as electrodes and then fired at 400°C for 10 We used X-ray diffraction [XRD] and scanning electron microscopy [SEM] to analyze the crystalline and microstructures The dielectric...
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Báo cáo hóa học: " Investigation of a new lead-free " docx
Ngày tải lên :
20/06/2014, 23:20
... Anucha Watcharapasorn1,2, and Sukanda Jiansirisomboon*1,2 Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand Materials Science Research ... 0.15, and 0.20) were fabricated using a solid-state mixed oxide method and sintered between 1,050°C and 1,175°C for h The effect of (Ba0.7Sr0.3)TiO3 [BST] content on phase, microstructure, and ... Na2CO3, TiO2, K2CO3, BaCO3, and SrCO3 A stoichiometric amount of BNKT and BST powders was weighed, ball-milled for 24 h, and dried using the oven-drying method BNKT and BST powders were separately...
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A novel flow battery—A lead acid battery based on an electrolyte with soluble lead pptx
Ngày tải lên :
05/07/2014, 20:21
... Pb(CH3 SO3 )2 + M CH3 SO3 H with (b and d) and without (a and c) g dm−3 sodium ligninsulfonate Current densities: 50 mA cm−2 (a and b) and 375 mA cm−2 (c and d) Deposition time: 600 s small flow ... run over the potential range where lead deposition and re-dissolution is to be expected The inset compares the forward scans for solutions with and without additive on a more sensitive current ... potential and the ratio of charges associated with the dissolution and deposition of lead are very close to one Pulsed current experiments confirmed that the overpotentials for the deposition and dissolution...
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Báo cáo y học: "Vastus medialis cross-sectional area is positively associated with patella cartilage and bone volumes in a pain-free community-based population" pdf
Ngày tải lên :
09/08/2014, 01:22
... contributions FMC and AEW participated in the design of the study and in the analysis and interpretation of data and reviewed the manuscript DRE and GGG participated in the acquisition of data and in the ... cartilage and bone structure, participated in the analysis and interpretation of data, and reviewed the manuscript PAB and AJT performed the statistical analysis and interpretation of data and drafted ... the analysis and interpretation of data and reviewed the manuscript FSH participated in carrying out the measurement of muscle structure and in the analysis and interpretation of data and reviewed...
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Báo cáo khoa học: " Feasibility and early clinical assessment of flattening filter free (FFF) based stereotactic body radiotherapy (SBRT) treatments" pptx
Ngày tải lên :
09/08/2014, 09:21
... first and second follow up visits and will be reported in terms of degree of response Results Dosimetric and technical data Figure illustrates examples of dose distributions of lung, abdominal and ... Southern Switzerland, Bellinzona, Switzerland Authors’ contributions MA, FA, AF, PM, LC, PN carried out the data, participated in the data evaluation and drafted the manuscript MA, FA and LC participated ... design of the study and PM and LC performed the statistical analysis SC, AC, FL, VP,CP, SP, GR, SA, AT, AA carried out the patients record evaluation and followed patients and treatments The definitive...
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Báo cáo y học: "Vastus medialis cross-sectional area is positively associated with patella cartilage and bone volumes in a pain-free community-based population" ppt
Ngày tải lên :
09/08/2014, 13:22
... contributions FMC and AEW participated in the design of the study and in the analysis and interpretation of data and reviewed the manuscript DRE and GGG participated in the acquisition of data and in the ... cartilage and bone structure, participated in the analysis and interpretation of data, and reviewed the manuscript PAB and AJT performed the statistical analysis and interpretation of data and drafted ... the analysis and interpretation of data and reviewed the manuscript FSH participated in carrying out the measurement of muscle structure and in the analysis and interpretation of data and reviewed...
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Nanostructured phosphate based electrode materials for lithium batteries
Ngày tải lên :
09/09/2015, 10:10
... first cycle of charge and discharge profiles at 0.1C for LiFe1/3Mn1/3Co1/3PO4/C in mol/l LiPF6 sulfolane and (d) selective cycles (1st to 30th cycles) of charge and discharge profiles at 0.1C for ... Metrics and Characteristics of Battery In order to understand the properties and the differences of various battery systems and to evaluate their performances, it is necessary to understand several ... template method and calcined at (a) 600 ° (b) 650 ° and C, C (c) 700 ° for h C 105 Rietveld refinement profiles of (a) LiFePO4/C prepared by soft template method at 650 ° for h and (b) solvothermal...
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LI4TI5O12 based anode materials for high power lithium ion batteries
Ngày tải lên :
09/09/2015, 11:18
... FeO, RuO2, Fe2O3 and Cr2O3, adopt the conversion mechanism Finally, a number of metallic and semi-metallic elements in groups IV and V (such as Si, Sn, Ge, Pb, P, As, Sb, and Bi) and some other ... compositing and carbon’s hinderer of particle growth, Li 3.8Fe0.3Ti4.9O12/CNTs and LiCrTiO4/CNTs composites respectively exhibit large capacities of 106 and 120 mAh g –1 at 10 C, which are about nine and ... (c) x=0.05 and (d) x=0.075 at 0.5 C, C, C and C (identical discharge/charge rates were used) 38 X Fig 3.9 Rate and cyclic performances of Li4–2xNi3xTi5–xO12 (x=0, 0.025, 0.05 and 0.075)...
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Cyclophane and bridged triphenylamine based organic materials for optical applications
Ngày tải lên :
10/09/2015, 08:24
... energy band is created just below the conduction band and that newly created fully occupied energy band can reduce the band gap by acting a bridge between the valence and conduction band (Figure-1.2) ... empty energy band is created just above the valence band, that newly created empty energy band can reduce the band gap by acting as a bridge between the valence and conduction band Where as in ... electron is called the valence band and the higher energy bands those are empty are called the conduction band The energy gap between these two bands is called the band gap Normally, if the conjugated...
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Synthesis, characterization and potential applications of pyrene based organic materials
Ngày tải lên :
11/09/2015, 10:19
... (d) and only POLY7 (e) 150 Figure 4.9 IR spectra of (a) Ag and (b) Au NPs before and after extraction 151 Figure 4.10 Absorption spectra of water layer before and after removal of (a) Ag and ... and only POLY13 (e) 191 Figure 5.10 IR spectra of (a) Ag and (b) Au NPs before and after extraction 192 xxii Figure 5.11 Absorption spectra of water layer before and after removal of Ag (a) and ... (TM6 – TM7 and POLY7 – POLY9) 145 Table 4.4 Extraction efficiency of the target compounds (TM6 – TM7 and POLY7 – POLY9) for Au and Ag NPs 158 Table 4.5 Zeta potentials of NPs before and after...
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Development of lead free electroless nickel plating systems and metal thin films on silicone and nafion membranes
Ngày tải lên :
14/09/2015, 14:01
... sulfur-containing amino-acids, Bi3+-complex ion and phosphines, to replace Pb in the ENP solution, and proposal of suitable ligands to introduce indissoluble Bi3+ ion and phosphines into the weak acidic ... bath The relationship between nickel deposition rate and concentration of two amino acids was set up and the critical concentrations for cysteine and methionine were determined as well Two stabilizing ... ions with hexaquonickel ion was first proposed by Cavallotti and Salvago (1968), and then supported by the calorimetric study of Randin and Hintermann (1970) In this mechanism, the chemical reduction...
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Synthesis and characterization of amphiphilic poly(p phenylene) based nanostructured materials 6
Ngày tải lên :
14/09/2015, 18:36
... and reagents All reagents were purchased from Aldrich, Fluka, Merck and TCI and were used without further purification unless noted otherwise Tetrahydrofuran (THF) was distilled over sodium and ... amphiphilic poly(p-phenylene)s synthesized and used for the present study 6.3.1 Synthesis and characterization of monomers and polymers The polymers C6PPPOH, C12PPPOH and C18PPPOH were synthesized using ... equipped with a Water 410 differential refractometer HPLC system and Waters Styragel HR 4E columns using THF as eluent and polystyrene as standard The XRD patterns were recorded on an X-ray powder diffractometer...
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Synthesis and characterization of amphiphilic poly(p phenylene) based nanostructured materials 5
Ngày tải lên :
14/09/2015, 18:37
... Results and Discussions 5.2.1 Synthesis of Polymer C12PPPOC11OH The synthesis and characterization of the monomer dibromohydroquinone, 2,5dibromo-4-dodecyloxyphenol, and polymers C12PPPOBZn and C12PPPOH ... C12PPPC11OH and C12PPPC11OH -silica composite prepared from 1:1 and 1:0.5 silica -C12PPPC11OH ratios Infrared spectra of the polymers, C12PPPC11OH, C12PPPOH and polymer-silica composites before and after ... water and organic solvents On comparing the UV-Vis and emission studies of the polymers in THF and polymer-incorporated composite dispersed in THF, no significant shift in the absorption and emission...
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