Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The compound combustion of DME and methanol was realized in a four-cylinder direct-injection diesel engine by introducing a certain amount of DME into the manifold and injecting methanol into the cylinder using the injection system of the original engine. The effects of methanol injection timing and equivalence ratios…
Features of the transformation of the cathodoluminescence spectra of CdSe epitaxial layers with increasing excitation level are studied. It is shown that the spectra at 78 K exhibit the following transformation as the excitation-current density increases: (A-exciton line)-(non-degenerate electron-hole plasma bands)-(d…
The study of the dielectric properties of a CdIn2S4〈3 mol % Cu〉 single crystal in alternating-current (ac) electric fields with frequencies f = 5 × 104−3.5 × 107 Hz has revealed the origin of dielectric loss (relaxation loss that is changed by the through current loss at high frequencies). It has been found that CdIn2…
The sessile drop method is used to study the contact interaction of Ag, Au, Pd, Pt, and Ir with the Bi 2 O 3 -GeO 2 and Bi 2 O 3 -SiO 2 melts. These melts spread over Ag and Pd and, in some cases, over Au and Pt at a rather high speed and form equilibrium contact angles on Ir.
The carboxymethyl cellulose (CMC) is oxidized to the dialdehyde carboxymethyl cellulose (DACMC) at extremely acid media by sodium periodate. The reaction has been carried out at pH 2.0, temperature 35°C for 1.5h, with a NaIO4/CMC molar ratio of 1.1. FTIR peaks confirm the oxidation of CMC to DACMC. Furthermore, the rh…
Mainly due to the current reduction of NOx that is SCR technology which has some problems, it is difficult to meet the increasingly stringent emission regulations.Then people study the SSCR system that uses solid reducing agent, the solid reducing agent has large ammonia density.SSCR system injects NH3 directly into t…
The self-assembly of a planarized cyanosubstituted heterotriangulene on Au(111) is reported by K. Müller, M. Kivala, M. Stöhr, and co-workers in article 1300025. The complex interplay of intermolecular and molecule/substrate interactions leads to the development of different chiral phases, stabilized by a combination…
Experimental results are presented to show that multibubble sonoluminescence is accompanied by the formation of an electric double layer on an ultrasonic waveguide.
An undercooled melt possesses an enhanced free enthalpy that enables to crystallize metastable solids in competition with their stable counterparts. Crystal nucleation selects the crystallographic phase whereas the growth dynamics controls microstructure evolution. We apply containerless processing such as electromagn…
We perform Monte Carlo simulations to study the two dimensional random-bond XY model on a square lattice. Two kinds of bond randomness with the coupling coefficient obeying the Gaussian or uniform distribution are discussed. It is shown that the two kinds of disorders lead to similar thermodynamic behaviors if their v…
Volume ablation process of resin-matrix thermoprotective composite is, generally, associated with complex physico-chemical changes, heat and mass transfer processes and irreversible changes of thermomechanical and thermophysical properties. The thermomechanical behavior of resin-matrix thermoprotective material during…
Domain walls in ferroelectrics are moved by the application of electric fields by J. L. Jones and co-workers. The extent of this domain wall motion can be measured using high-energy X-ray diffraction. During the application of electric fields, Debye-Scherrer cones diffract from the sample in transmission geometry. On…
The effect of Bremsstrahlung γ-ray photons and neutrons (effective energy E eff = 8 MeV) with fluences of 1012–1013 neutron/cm2 on the electrical and photoelectric parameters of layered p-n-InSe is studied for the first time. Even at the highest radiation fluence, an improvement in the current-voltage characteristics…
Zinc(II) tetraphenylporphyrinate in chloroform forms complexes with primary amines containing up to 18 carbon atoms; the complex with n-octylamine is the most stable. Zinc(II) tetraphenylporphyrinate complex with octanol-1 is more stable than those with other alcohols. Reasons for this highest complex stability have b…
The stability of magnesium hydride (MgH 2 ) at high pressure is studied using a constant-pressure ab initio technique. Two phase transformations are successfully observed through the simulations. The rutile structure undergoes a phase transformation into a CaCl 2 -type phase. Further increase in pressure results into…
New ternary Eu(III) 5-(2-pyridyl-1-oxide)tetrazolate complexes with phosphine oxide co-ligands have been synthesized and characterized by elemental analysis, and IR and 1H NMR spectroscopic techniques. The analytical data revealed that these complexes are mononuclear, and the central Eu(III) ion is coordinated by thre…
Rapid prototyping technology manufactures the product prototype can be generated directly from 3D CAD data and can be regenerated easily after the design was modified. This paper introduces the principle of rapid prototyping technology and the applications of rapid prototyping technology in automobile design, developm…
In this paper the effect of Layered double hydroxides (LDHs) on aging properties of asphalts was studied. The thin film oven test TFOT tests and ultraviolet (UV) aging process were used to simulate short-term and long-term aging of asphalts, respectively. After aging, the physical properties and dynamic shear rheologi…
Structural, electronic, and optical properties of PbTiO3, SnTiO3, and GeTiO3 tetragonals (P4mm, 99 space group) were investigated using density functional theory as implemented in pseudo-potential plane wave in CASTEP computer code. The calculated equilibrium lattice parameter, electronic band structure, and optical p…
Fatigue crack growth rates in steels at high and low temperatures have been investigated using Paris curves. The fatigue crack growth rates at high temperatures are quite different from those at low temperatures. Arrhenius plots between fatigue crack growth rate (da/dN) and test temperatures at constant stress intensi…