domain engineering and phase transformations
Lead-Free Piezoelectrics pot
Ngày tải lên :
16/03/2014, 09:20
... suggestions and comments to further improve the text in eventual second edition Blackburg, VA, USA Shashank Priya Contents Part I Domain Engineering and Phase Transformations Domain Engineering and Phase ... on domain engineering and phase transformations covering the role of morphotropic phase boundary, electric-field induced phase transition, intermediate bridging phases, polarization rotation and ... These results indicate a phase Domain Engineering and Phase Transformations Fig 1.10 Modified phase diagram of PMN-xPT around the MPB The symbols separating the MC and T phases represent the temperatures...
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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
... orthorhombic-tetragonal phase transformation, and when the temperature is higher than 420°C, the tetragonal phase changes to a cubic phase or becomes paraelectric 2 The phase diagram of (1-x) ... method Phase identification, thermal analysis, and microstructures of the prepared glass and glass ceramics were also investigated by X-ray diffraction [XRD], differential thermal analysis [DTA], and ... Malaysia) Results and discussion The XRD pattern of a calcined KNN sample (Figure 2) displays the diffraction peaks of the KNN perovskite phase, together with an unknown phase The unknown phase here...
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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
... d2 j − 3c N π κ2 SNR (59) i = p and j = q i = p and j = q j = q and i = p (60) i = q and j = p j = p and i = q else Note that similarly as in [33] the signal attenuation ... the general form of the REFB-USR-LS and the REFB-USR-WLS estimates are derived in the same way as (18) and (19) by replacing PPu P and Q with TT MT Mj Ti and Qi,j , respectively We not repeat ... again two projections P and Pu , and arrive at Pu P(ψ a − (Pu) (Pu)) = 2Pu PXT x + Pu Pm, a (31) the right hand side of which is exactly the same as the one in (17), and thus we can state Pu...
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Báo cáo hóa học: " Electrical properties of lead-free " pdf
Ngày tải lên :
20/06/2014, 23:20
... Lee1, and Young-Hie Lee*2 Department of Ceramic Engineering, Engineering Research Institute, Gyeongsang National University, Jinju-Si, 660-701, South Korea Department of Electronic Materials Engineering, ... 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...
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Báo cáo hóa học: " Investigation of a new lead-free " docx
Ngày tải lên :
20/06/2014, 23:20
... 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 ... directions due to the coexistence of rhombohedral and tetragonal phases (eight directions for rhombohedral phase and six directions for tetragonal phase) was also a reason that gave a high Pr in ... 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 ... 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 ... inorganic ions (e.g Sb(V), Bi(III), Fe(III), Ni(II) and Ag(I)) are known to influence the conductivity and electrocatalytic properties of PbO2 ([10–12] and references therein [13,14]) Moreover, Cu(II)...
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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
... 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 ... Fabrication Support Centre) and Dr Zhang Jixuan (from Department of Material Science and Engineering, i Transmission Electron Microscopy Laboratory) for their technical supports and assistances in my ... LiFe1/3Mn1/3Co1/3PO4/C calcined at 600 ° and 650 ° for h and (b) enlarged 2 region shows C C the shift in the positions of (301), (311) and (121) diffraction peaks 177 (a-b) Low magnification and (c-d) high magnification...
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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 ... energy and vice versa It generally consists of a cathode, anode, electrolyte and separator, as schematically illustrated in Fig 1.1 Both the cathode and anode act as the sinks of Li+ ions, and the...
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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
... SYSTEMS AND METAL THIN FILMS ON SILICONE AND NAFION MEMBRANES WANG KE (M.Sc., CUGB; M.Eng., CUGW) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CHEMICAL AND BIOMOLECULAR ENGINEERING ... 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 ... 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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