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dielectric constant of inorganic solids

Báo cáo hóa học:

Báo cáo hóa học: "Effect of the carbon nanotube surface characteristics on the conductivity and dielectric constant of carbon nanotube/poly(vinylidene fluoride) composites" doc

Hóa học - Dầu khí

... nanocomposites Dielectric measurements show that the incorporation of the CNT in the PVDF matrix but leads to a gradual increase of the dielectric constant (ε’) as the amount of the filler is ... frequency behavior of the dielectric permittivity is similar to the one obtained for the pure polymer, except for an increase of the low frequency dielectric constant and dielectric loss (not ... oxidation treatments in terms of the dielectric response In a previous study [19], it was demonstrated that an increase in the dielectric constant is related with the formation of a capacitor network...
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Modeling and characterization of high dielectric constant tunnel barriers for nanoelectronic applications

Modeling and characterization of high dielectric constant tunnel barriers for nanoelectronic applications

Thạc sĩ - Cao học

... used as a replacement The EOT of a high-κ dielectric layer is the ratio of the permittivity of SiO2 to that of the high-κ layer, multiplied by the physical thickness of the high-κ layer There are ... Calculation of Dit using Terman’s method A-1 Appendix B: Derivation of the Physical Thickness of the Stacked Dielectric B-1 Appendix C: Analyzing Transmission Coefficient of High-κ Materials ... 1.26 x 10-2 cm2) Relative dielectric constant values of 15 and 25 have been used for the interfacial ZrSixOy (thickness of 1.73 nm from TEM) and bulk ZrO2 (thickness of 13.08 nm from TEM) layers,...
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INFLUENCES OF SOLVENT DIELECTRIC CONSTANT ON pbs SURFACE

INFLUENCES OF SOLVENT DIELECTRIC CONSTANT ON pbs SURFACE

Vật lý

... increase of ionicity according to the dielectric constant (a) (b) Fig The dependence of concentrated atomic charges (a) and surface core level shifts of Pb 5d band (b) on dielectric constant ... as water with dielectric constant 78.54 The enhancement of surface electronic polarization with increasing solvent dielectric constant was accompanied by the enhanced polarization of surface bonding ... represents the dependence of SCLSs of 5d Pb band on dielectric constant The calculated SCLSs values are very small (below 2%) and reduce quickly when the dielectric constant increased This is...
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Improvement of Water Quality by Removal of Suspended Solids and High-speed Biological Filtration in Closed Water Body

Improvement of Water Quality by Removal of Suspended Solids and High-speed Biological Filtration in Closed Water Body

Môi trường

... influence of these disturbances was found Some sampling points were selected They are the outlet of plant, the outside of experimental area, points of horizontal level and 0.5, 1.0, 1.5 m of vertical ... outlet of equipment Transparency[cm] 60 out of experimental area 50 40 30 20 10 10 15 20 25 30 35 40 45 50 Time[d] Figure Variation of Transparency Variation of COD concentration Variation of COD ... system, and the removal of nitrogen should be considered, too References [1] Department of Water Environment, Ministry of the Environment, Japan July 2002 Outline of Administration of Water Environment...
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Tài liệu Environmental impacts of petroleum production: Fate of inorganic and organic chemicals in produced water from the Osage-Skiatook Petroleum Environmental Research sites, Osage County, Oklahoma doc

Tài liệu Environmental impacts of petroleum production: Fate of inorganic and organic chemicals in produced water from the Osage-Skiatook Petroleum Environmental Research sites, Osage County, Oklahoma doc

Tự động hóa

... climatic settings of the Lester and Branstetter leases resemble that of much of the major southern mid-continent oil- and gas-producing area of the U.S The leases are also typical of many depleted ... billion and 0.3 billion bbl of produced water were obtained with 2.5 billion bbl of domestic crude oil and 18 trillion ft3 of natural gas, respectively (2) The volume of produced water in 1970 ... the volume of produced water relative to petroleum increases with time, typically reaching 98% of total fluids during the later stages of field production The chemical composition of produced...
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The Effects of Inorganic Salts and Precipitated Calcium Carbonate Filler on the Hydrolysis Kinetics of Alkylketene Dimer docx

The Effects of Inorganic Salts and Precipitated Calcium Carbonate Filler on the Hydrolysis Kinetics of Alkylketene Dimer docx

Tự động hóa

... Colleges and Schools to award the Master of Science and Doctor of Philosophy NOTICE on Colleges degrees of the Southern Association of AND DISCLAIMER The Institute of Paper Science and Technology (IPST) ... hydrolysis of AKD at pH 8.3 A, 22 “C, and B, 50 OC 0 Time (h) Figure The pH effect on the hydrolysis of AKD at 50°C 80 60 Time (h) Fig The effect of inorganic salts on the hydrolysis of AKD at ... treatment of, or employment in the programs and activities which the Institute operates The Effects of Inorganic Salts and Precipitated Calcium Carbonate Filler on the Hydrolysis Kinetics of Alkylketene...
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Geochemistry of inorganic arsenic and selenium in a tropical soil  effect of reaction time, ph, and comp

Geochemistry of inorganic arsenic and selenium in a tropical soil effect of reaction time, ph, and comp

Môi trường

... types of minerals In addition, the abundance of soils in a variety of geochemical environments and their influence on adsorption of contaminants suggested the need for more characterization of As ... of As(V), Se(IV), and Se(VI) with increasing pH showed evidence of similar behavior to that of surface charge density of the soil (Fig 1) The soil surface charge density decreased as the pH of ... contaminants Arsenic can exist in inorganic form, organic form, and gaseous state The oxidation states of As in the natural systems are )3, 0, +3, and +5 The main inorganic forms of As in contaminated soils...
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reaction mechanisms of inorganic and organometallic systems (topics in inorganic chemistry)

reaction mechanisms of inorganic and organometallic systems (topics in inorganic chemistry)

Hóa học - Dầu khí

... Rate Constants, 12 Complex Rate Laws, 15 Complex Kinetic Systems, 15 Temperature Dependence of Rate Constants, 17 Pressure Dependence of Rate Constants, 21 Ionic Strength Dependence of Rate Constants, ... type of modeling is capable of providing an indication of the effects of steric interactions on reactivity, but gives no measure of the actual energetics of the reaction More recently, modeling of ... slope of -k\ The linearity of such plots often is taken as evidence of a first-order rate law Since the assessment of linearity is somewhat subjective, it is better to show that the slope of such...
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handbook of conveying and handling of particulate solids

handbook of conveying and handling of particulate solids

Hóa học - Dầu khí

... the course of the development of the uniaxial tester, and to Professor Sunil de Silva for help in the preparation of the manuscript Handbook of Conveying and Handling of Particulate Solids A Levy ... devices for the handling of bulk solids and to characterize bulk solids the flow properties of these bulk solids have to be known For their measurement a great number of shear and other testers ... and Flow of Solids, Bulletin 123, Utah University 1964 J Schwedes, Testers for Measuring Flow Properties of Particulate Solids, Proceedings of the International Symposium Reliable Flow of Particulate...
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handbook of inorganic chemicals, patnaik

handbook of inorganic chemicals, patnaik

Hóa học - Dầu khí

... the amount of heat required to raise the temperature of one gram of a substance by 1°C The specific heat of water is calorie or 4.184 Joule The heat of fusion, ∆Hfus is the amount of thermal ... xiii Some Physical Constants Velocity of light, c ϭ 2.9979 ϫ 108 m/s (in vacuum) Planck’s constant, h ϭ 1.05457 ϫ 10–34 J.s Rydberg constant, RH ϭ 2.17991 ϫ 10–18 J Boltzmann constant, k ϭ 1.3807 ... of refraction is the ratio of wavelength or phase velocity of an electromagnetic wave in a vacuum to that in the substance It measures the amount of refraction a ray of light undergoes as it passes...
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handbook of inorganic chemistry (patnaik)

handbook of inorganic chemistry (patnaik)

Hóa học - Dầu khí

... the amount of heat required to raise the temperature of one gram of a substance by 1°C The specific heat of water is calorie or 4.184 Joule The heat of fusion, ∆Hfus is the amount of thermal ... xiii Some Physical Constants Velocity of light, c ϭ 2.9979 ϫ 108 m/s (in vacuum) Planck’s constant, h ϭ 1.05457 ϫ 10–34 J.s Rydberg constant, RH ϭ 2.17991 ϫ 10–18 J Boltzmann constant, k ϭ 1.3807 ... of refraction is the ratio of wavelength or phase velocity of an electromagnetic wave in a vacuum to that in the substance It measures the amount of refraction a ray of light undergoes as it passes...
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Báo cáo hóa học:

Báo cáo hóa học: " Influences of phase transition and microstructure on dielectric properties of Bi0.5Na0.5Zr1-xTixO3 ceramics" potx

Hóa học - Dầu khí

... grain size decreased when addition of Ti increased Grain size difference of BNZT above 0.4 mole fraction of Ti4+ displayed a significant increase of dielectric constant at room temperature Keywords: ... purpose of this work is to investigate influences of the occupancy of Ti4+ ions at the B-site of Zr4+ host ions with Zr/Ti ratios of 0.7:0.3, 0.6:0.4, 0.5:0.5, and 0.4:0.6 on phase transition and dielectric ... displays the compositional dependence of BNZT ceramics of dielectric constant at frequencies of 1, 10, and 100 kHz All samples showed a decreasing trend of the relative permittivity when the...
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Báo cáo hóa học:

Báo cáo hóa học: " Functionalised graphene sheets as effective high dielectric constant fillers" ppt

Hóa học - Dầu khí

... were sputter-coated with a thin layer of to nm of gold/palladium lead prior to imaging Results and discussion Dielectric properties The dielectric properties of the poly(dimethyl)siloxane (PDMS) ... permittivity constant was significantly increased by the addition of both carbon nanoparticles in the whole frequency range While the dielectric permittivity of the composite with 0.5 wt.% of CNT (ε’ ... F, De Rossi D: Improvement of electromechanical actuating performances of a silicone dielectric elastomer by dispersion of titanium dioxide powder IEEE Transactions on Dielectrics and Electrical...
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Báo cáo hóa học:

Báo cáo hóa học: " Research Article The Best Constant of Sobolev Inequality Corresponding to Clamped Boundary Value Problem" pdf

Hóa học - Dầu khí

... existence result of conjugate points as 2, , we can prove this corollary directly through the Sobolev inequality the idea of the proof origins to Brown and Hinton 5, page Proof of Corollary 1.4 ... M The expression of the Green’s function of Proposition 1.1 is different from that of The expression of Boundary Value Problems 4, Theorem 2.1 is given by some finite series of x and y on the ... embedding constant Corollary 1.4 If there exists a pair of conjugate points on −s, s with respect to 1.12 , then s −s , C M; −s, s p x dx > 1.14 where C M; −s, s is the best constant of the Sobolev...
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Báo cáo hóa học:

Báo cáo hóa học: " Dielectric Relaxation of La-Doped Zirconia Caused by Annealing Ambient" pptx

Hóa học - Dầu khí

... http://www.nanoscalereslett.com/content/6/1/48 Page of k-value of the La 0.35 Zr 0.65 O dielectric significantly (k-value reaches 32 at kHz), along with a significant dielectric relaxation (2) There is less of an effect on the ... suggested that the formation of positively charged over-coordinated O defects is near the Si/SiO2 interface [33,34] The effect of post-deposition oxidation of SiOx/ZrO gate dielectric stacks at different ... (5) a k-value dependence on frequency of the La0.35Zr0.65O2 dielectric To obtain the genuine intrinsic properties and permittivity of the La0.35Zr0.65O2 dielectric from the CV measurements, the...
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báo cáo hóa học:

báo cáo hóa học:" Influences of phase transition and microstructure on dielectric properties of Bi0.5Na0.5Zr1-xTixO3 ceramics" pptx

Hóa học - Dầu khí

... with improved dielectric constant was also found in several researches [13,14] Table also listed the dielectric constant of the BNZT Figure Dielectric constant at room temperature of BNZT ceramics ... displays the compositional dependence of BNZT ceramics of dielectric constant at frequencies of 1, 10, and 100 kHz All samples showed a decreasing trend of the relative permittivity when the ... increase in dielectric constant of the BNZT composition containing more than 0.4 Ti content, the decrease of average grain size was believed to partly enhance permittivity values of the samples...
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Báo cáo hóa học:

Báo cáo hóa học: " Research Article On the Spectrum of Almost Periodic Solution of Second-Order Neutral Delay Differential Equations with Piecewise Constant of Argument" ppt

Hóa học - Dầu khí

... solution of 1.1 , then x t px t − are continuous at t ∈ R, which guarantees the uniqueness of solution of 1.1 and cannot be omitted To study the spectrum of almost periodic solution of 1.1 , ... The proofs of Lemmas 2.2, 2.3, and 2.4 are elementary, and we omit the details Lemma 2.5 Suppose that |p| / and q / − p2 APS R , then 2.7 has a unique solution {x2n } ∈ Proof As the proof of Theorem ... {kπ : k ∈ Z} holds, where the sum of sets A and B is defined as A B {a b : a ∈ A, b ∈ B} We postpone the proof of this theorem to the next section The Proof of Main Theorem To show the Main Theorem,...
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Báo cáo hóa học:

Báo cáo hóa học: " Developing the dielectric mechanisms of polyetherimide/multi-walled carbon " pot

Hóa học - Dầu khí

... was used to find a reasonable dielectric constant of the MWNTs from the measured dielectric constants of the PEI/MWNT composites The reasonable dielectric constant of the MWNTs was approximately ... relatively low due to the lower dielectric constant of the epoxy matrix Bai et al [5] reported a high dielectric constant for a polymer matrix composite containing a large amount of ferroelectric ceramic ... polymer/metal composites with high dielectric constants as only a small weight percentage of conductive particles was added, but the thermal stability of the dielectric constants was not good [6] In...
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Báo cáo hóa học:

Báo cáo hóa học: "THE JAMES CONSTANT OF NORMALIZED NORMS ON R2" ppt

Báo cáo khoa học

... value of the James constant of these spaces Theorem 3.7 Let ψ ∈ Ψ2 Then J ψ- ∞ = 1+ 1/2 ψ(1/2) (3.24) The James constant of normalized norms on R2 Proof For our convenience, we write · instead of ... segments of same lengths since · ϕ is absolute On the other hand, if (1,0) is an not extreme point of B ϕ - ϕ , again S ϕ - ϕ contains segments of same lengths Next, we prove that the dual of a generalized ... ϕ(t)/ψ(t), and let δψ (·) be the modulus of convexity of ψ - ψ Then for ε ∈ [0,2], δψ,ϕ (ε) ≥ − Mϕ,ψ − δψ (ε) , δψ where δψ,ϕ (·) is the modulus of convexity of J ψ- ϕ ψ - ϕ ε Mϕ,ψ , (3.1) Consequently,...
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USES OF ORGANIC MATTER AND USES OF INORGANIC MATTER potx

USES OF ORGANIC MATTER AND USES OF INORGANIC MATTER potx

Nông nghiệp

... alkaline substances Thus nitrate of potash (saltpetre), is composed of nitric acid and potash: nitrate of soda (cubical nitre), of nitric acid and soda USES OF INORGANIC MATTER What effect has ... condition of inorganic matter is requisite for fertility? What is the fixed rule with regard to this? What is the condition of the alkalies in most of their combinations? Of the acids? What is said of ... the soil of some parts of Massachusetts and that of the Miami valley? The subsoil is usually of a different character from the surface soil, but this difference is more often the result of circumstances...
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