chemical thermodynamic and transport properties of pure compounds and solutions
PREDICTION OF CHEMICAL REACTIVITY PARAMETERS AND PHYSICAL PROPERTIES OF ORGANIC COMPOUNDS FROM MOLECULAR STRUCTURE USING SPARC pptx
... chemical and physical properties to Program Offices (e.g., Office of Water, Office of Solid Waste and Emergency Response, Office of Prevention, Pesticides and Toxic Substances) and Regional Offices ... Agency's Office of Prevention, Pesticides and Toxic Substances (OPPTS) [1] Hence, the need for physical and chemical constants of chemical compounds has greatly accelerated both in industry and government ... databases The strength of the electrostatic interaction between S and C depends on the magnitude and relative orientation of the local fields of S and C and the dielectric properties and distances through...
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cross plane electronic and thermal transport properties of p type la0.67sr0.33mno3 lamno3 perovskite oxide metal semiconductor superlattices
... were 40:10 sccm of Cl2:Ar, a chamber pressure of 0.7 Pa, an RF forward power of 800 W, and a capacitive bias of 350 W J Appl Phys 112, 063714 (2012) FIG (a) XRD 2-theta-omega scan of an LSMO/LMO ... behavior with LSMO FWHM (0.027 ) and LMO FWHM (0.102 ) and (b) 110 RSM of a micronthick LSMO/LMO superlattice The LSMO and LMO peaks have a small degree of spread and show a consistent in-plane ... TPB at 220 K (Figs 5(a) and 5(b)) FIG (a) Top view SEM images of anisotropically etched LSMO/LMO superlattices with pillar heights of lm and the schematic of final structure of LSMO/LMO superlattices...
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FINGERPRINTS IN THE OPTICAL AND TRANSPORT PROPERTIES OF QUANTUM DOTS ppt
... Variation of the emission spectra bandwidth and its corresponding peak wavelength as a function of the injection current The waveguide is 1mm long and with tilted () and tapered () angles of 8 and ... origin at the minimum of the ground state, and a single frequency of vibration of the phonon, Assuming H i , H f , and H if are linear dependent of Q, and a parabolic shape of the potential ... densities and the lengths of the two SLD sections allows a control of the power output and bandwidth related to the GS and ES of the dots Using such an approach, Xin and co-authors (Xin et al,...
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Structure, magnetic and transport properties of magnetic oxide materials and exploration of magnetic oxides semiconductor (zno) heterostructures
... of the CoFe2O4 / ZnO /SiO2, and the enlarged (333) diffraction of the CoFe2O4 films with different thicknesses 143 Figure In plane and out of plane hysteresis loops of the CoFe2O4 (40nm) ... 300K and 5K 116 XI LIST OF FIGURES Figure 1 The density of state of non-magnetic, ferromagnetic, and half metallic meterials Figure Schematic diagram of Spin filter tunneling Below the TC of ... (black) and out of plane (red) hysteresis loops of CoFe2O4 deposited at temperatures from 150° 250° 350° and 550° on glass substrates 90 C, C, C C Figure 10 In plane (black curve) and out of...
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Processing and mechanical properties of pure mg and in situ aln reinforced mg 5al composite 1
... phase/dopants, stress, duration of its application and temperature, and crystal defects To minimize and control the level of defects and contaminants without sacrificing material properties is the major ... Study of microstructures and mechanical properties of Mg MMCs at different ball milling durations Investigation of the deformation behavior of Mg-5wt%Al-1wt%AlN systems Introduction 1.3 Scope of ... objectives of the present study are: Synthesis of AlN composite powder by mechanochemical milling Synthesis of Mg-5wt%Al reinforced with 1wt% of in-situ formed AlN via mechanical milling and power...
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Processing and mechanical properties of pure mg and in situ aln reinforced mg 5al composite 2
... strength of MMed materials However, the amount of impurity increases with milling time, leading to degradation of overall combination of mechanical properties Consolidation of the fine powders and ... management and the treatment of wastes has become one of the most important concerns of modern society to protect the environment [147] Environmental regulations and quality demands require clean and ... Nanomaterials: Synthesis, Properties and Applications, Institute of Physics Publ., Bristol and Philadelphia, 1996 HS Nalwa (ed.) Handbook of Nanostructured Materials and Nanotechnology, Vol 1-5,...
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Processing and mechanical properties of pure mg and in situ aln reinforced mg 5al composite 3
... 40h of milling and a certain amount of released N reacted with Al with the evidence of weak and broad AlN peaks The proportion of AlN in the powder increased with further milling Higher and distinct ... melt of residual Al in the milled samples MMed powders annealed at 1250°C are composed of both particles and whiskers of AlN Majority of whiskers in the 20h- and 30h-MMed-1250 samples are long and ... (c), (d) and (e) Lack of droplet on the tip of the whisker excluded a VLS mechanism and the possible growth mechanism of the alumina could be vapor-solid (VS) route From Figs 3.7(d) and (e),...
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Processing and mechanical properties of pure mg and in situ aln reinforced mg 5al composite 4
... resistivity of Mg-5Al-1AlN composite sample and pure Mg samples 4.3.3 Thermal properties From Table 4.3 and Fig 4.8, the same trend of αc and αMg is observed for both composite and pure Mg samples ... 5% and 88 Processing, physical and tensile properties 9% after 10h and 20h-MM Further milling to 30h and 40h interestingly shows lower YS of 334 MPa and 205 MPa with enhanced ductility of 28% and ... distributions of MMed composite samples after (a) 10h, (b) 20h, (c) 30h and (d) 40h milling Crystallite sizes of the as-milled extruded composite and pure Mg samples were in the range of 116-33 nm and...
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Processing and mechanical properties of pure mg and in situ aln reinforced mg 5al composite 5
... effects on pure Mg milled for the durations of (a) 0h, (b) 10h, (c) 20h, (d) 30h and (e) 40h 115 Effects of strain rate on tensile properties Table 5.2 Yield strength and % elongation of pure Mg ... strain rate of 3.33x10-5 s-1, the YS of 0h-MMed sample was comparable to that of 30h-MMed sample and higher than that of 40h-MMed sample However, in terms of ductility, the 30h- and 40h-MMed ... accuracy, position control with accuracy of ±0.5% of transducer full travel, and strain controller with accuracy of 0.005% of transducer capacity or 0.25% of readingtransducer accuracy Liquid...
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Processing and mechanical properties of pure mg and in situ aln reinforced mg 5al composite 6
... coordinates of and is shown in Fig 6.1 The relationship between stress and creep strain rate is not linear at different temperatures Two outstanding features of the influence of particles ... stress levels of 40, 60, 80, 100, 120 and 130 MPa with dwelling time of hours 6.3 Results and discussion 6.3.1 Creep behaviors Table 6.1 Creep strain rate (s-1) at various applied stresses and temperatures ... Mg-5Al-1AlN cylindrical tensile specimens with a gauge diameter of 5mm and a gauge length of 25 mm at 273, 298 and 323K according to ASTM E139 standard Detailed test procedures have been described in...
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Processing and mechanical properties of pure mg and in situ aln reinforced mg 5al composite 7
... rate sensitivity factors of 0.087 and 0.106, and unusually small apparent activation volume of 41b3 and 34b3 are observed from the 40h-MMed composite and the 40h-MMed pure Mg samples respectively ... conditions of temperature and stress for the purpose of determining the values of the grain size sensitivity, and (c) performing experiments that involve large strains to ensure the presence of steady-state ... Conclusions and recommendations with yield stress of 205 MPa is observed from the composite sample with grain size of about 33 nm after 40h-MM Similar results of 33% ductility and 210 MPa yield...
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TRANSPORT PROPERTIES OF a QUASI TWO DIMENSIONAL ELECTRON GAS IN a sisige HETEROSTRUCTURE TEMPERATURE AND MAGNETIC FIELD EFFECTS
... average height of the roughness perpendicular to the Q2DEG and Λ represents the correlation length parameter of the roughness in the plane of the Q2DEG The mobility of the unpolarized and fully polarized ... parameter A describes the importance of MSE and depends on the random potential, the screening function including the LFC and the compressibility of the electron gas and is given by [1, 9] σ± = A= ... author of Ref [1] has supposed two kinds of charged impurities: remote impurity of density Nid located at zi = 490˚ A and interface impurity of density Ni0 located at zi = The values of zi are...
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single crystal growth and magnetic properties of rrhin5 compounds
... experiments and energy band calculations 2.4 MAGNETIC PROPERTIES OF RIN3 AND RRHIN5 COMPOUNDS 2.4 27 Magnetic properties of RIn3 and RRhIn5 compounds 1) RIn3 compounds Rare earth intermetallic compounds ... Results and Discussion 5.1 Magnetic properties and CEF scheme in RRhIn5 5.2 Fermi surface and magnetic properties of PrTIn5 (T: Co, Rh and Ir) 5.3 Unique magnetic properties of RRhIn5 ... magnetic properties of RRhIn5 series The present thesis consists of the following contents In Chap 2, the fundamental 2.1 Magnetic Properties of Rare Earth Compounds Magnetic properties of rare...
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Báo cáo " Influence of intradot Coulomb interaction on transport properties of an Aharonov-Bohm interferometer " ppt
... k and εkα are the longitudinal wave number and the corresponding energy of the electron The energies of the single particle states α+ + α within the ring and within the quantum dot are ε p and ... isolated subsystems of two leads, AB ring, and quantum dot, and is given explicitly by + εp Cpσ Cpσ + α+ α εkα Ckσ Ckσ + H0 = pσ kσ,α=L,R εd d+ dσ σ (2) σ Where α stands for the left (L) and the right ... Bogdan et al [7] and Walter Hofstetter et al [8] studied the combination of the Kondo effect and the Fano effect How the intradot Coulomb interaction influences the phase coherence of electronic...
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Electronic transport properties of single crystal silicon nanowires fabricated using an atomic force microscope
... (thickness as low as –20 nm), and allows to obtain a very sharp interface silicon layer=buried oxide The electrical conductance of silicon nanowires (section of 15×50 nm2 ) at room and low temperatures ... has been measured The e ect of lateral and backgate voltages on the wire electrical characteristics are presented and discussed Fabrication process The principle of AFM lithography on a silicon ... erent surface doses of respectively 5×1011 and 2×1013 cm−2 , ◦ followed by rapid thermal annealing at 950 C for 30 s This leads to two di erent doping levels of roughly 2×1017 and 1019 cm−3 , that...
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transport properties of fluids their correlation prediction & estimation
... selection and evaluation of reference standards for thermodynamic measurements of all types and the standardization of nomenclature and symbols in chemical thermodynamics One particular aspect of the ... University of Lisbon, Portugal Accurate knowledge of transport properties of pure gases and liquids, and of their mixtures, is essential for the optimum design of the different items of chemical ... states of thermodynamic equilibrium, are known as thermodynamic properties On the other hand, those properties which are concerned with the rate of change of the state of a fluid as a result of a...
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Steady state transport properties of anharmonic systems
... TRANSPORT PROPERTIES OF ANHARMONIC SYSTEMS JUZAR THINGNA M Sc., University of Pune, India A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF PHYSICS NATIONAL UNIVERSITY OF SINGAPORE ... coupling strength and is best suited only to study transient transport Exact treatment of anharmonic systems has been one of the holy grails of such transport theories and some of the most exciting ... elements of the matrix D 147 B.2 Diagonal elements of the matrix D 148 v Summary The study of transport, in anharmonic systems, has been one of the most challenging and fascinating...
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First principles investigation on transport properties of graphene based systems
... Figs 4.6(c) and 4.6(a) and suppresses spin up channel as that in Figs 4.6(d) and 4.6(b) (c) and (d) Isosurface plots of the Γ-point wave functions of π ∗ and π subbands for 8-ZGNR Red and Blue indicate ... structure of a 12-ZGNR The α- and β-spin states are degenerate in all energy bands ∆0 and ∆1 denote the direct band gap z z and the energy splitting at kdz = π, respectively (c) The variation of ∆0 and ... the effect of the other type of strain, such as biaxial strain and local strain, on the electronic properties of graphene remains unclear The requirement for switch-off, and thus a bandgap, can...
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Thermal transport properties of individual nanowires
... resistance of membrane-island, Rc1 and Rc2 are the thermal resistance of the two contacts between NW sample and the membrane-island, and Rs is the thermal resistance of NW sample The left hand side and ... First of all, I would like to thank my supervisor, Professor Li Baowen, and my co-supervisors, Professor Andrew Tay A O and Associate Professor John Thong Thiam Leong, for their inspiring and encouraging ... images of three of VO2 NWs on METS devices studied in this work with widths of 210 nm, 160 nm, and 140 nm 104 Figure 5.3: Temperature of both islands upon heating (red curve) and cooling...
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Investigations into the transport properties of angiotensin peptides
... TRANSPORT PROPERTIES OF ANGIOTENSIN PEPTIDES CHUA HUI LEE (B Sc (Pharm.) (Hons.), National University of Singapore) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF SCIENCE (PHARMACY) DEPARTMENT OF PHARMACY ... Molecular modelling of the angiotensin peptides 4.3.2 69 79 Determination of physicochemical and size parameters of the angiotensin peptides 88 iv 4.3.3 Structure- transport correlations of angiotensin ... affected by physicochemical properties (lipophilicity, hydrogen- bonding potential, charge) and structure (area, volume, conformation) The metabolic stability and the transport properties of these peptides...
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