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。
In precious metal-oxide catalyst system, the support materials strongly affect the catalytic activity. Especially the term of strong metal–support interaction is well known: Tauster et al. reported that partially reducible oxide such as titanium oxide could modify the chemisorption of H2 and CO [S.J. Tauster, S.C. Fun…
The effect of fabrication processes on the localized corrosion susceptibility of Alloy 22 ([UNS N06022] 56Ni-22Cr-13.5Mo-3W-4Fe), a candidate container material for the disposal of high-level nuclear waste in the proposed repository at Yucca Mountain, Nevada, was assessed in chloride-containing solutions at temperatur…
Colorless imide hybrid nanocomposites are fabricated using new amine functionalized oligosiloxane nano-building clusters (AONC) and the cross-linking agent 5-(2,5-dioxotetrahydrofuryl)-3-methyl-cyclohexene-1,2-dicarboxylic anhydride (DODCA) or 1,2,3,4-cyclobutanetetracarboxylic dianhydride (CBDA) in order to obtain th…
Nanofibrillar micellar structures formed by the amphiphilic hyperbranched molecules within a Langmuir monolayer were utilized as matter for silver nanoparticle formation from the ion-containing water subphase. We observed that silver nanoparticles were formed within the multifunctional amphiphilic hyperbranched molecu…
The solvent-free melt reaction of Eu and Yb with the N-heterocycle 1,2,4-triazole, gives the first three-dimensional networks of the lanthanides with complete nitrogen coordination spheres, further being the first unsubstituted triazolates of the lanthanides and exhibiting different valences.
Abstract A novel chiral sulphonato‐salen‐manganese (III) complex has been prepared and intercalated into a Zn‐Al layered‐double hydroxide (LDH) structure. The resulting catalyst was found to be highly active and enantioselective in the epoxidation of various styrenes and cyclic alkenes when using a combination of piva…
A strategy for the synthesis of multivalent peptide-based nonsymmetric dendrimers by native chemical ligation using poly(lysine) dendritic wedges as scaffolds is presented.
The preparation, crystal structures, magnetic properties and electrochemistry of novel linear hexanuclear nickel string complexes (Ni6(12+)) and their corresponding 1-e(-) reduction products (Ni6(11+)) are reported. In these complexes, the hexanickel chain is in a symmetrical arrangement (approximately D(4) symmetry)…
Using Bloch modes to study the extraordinary transmission of light through a periodic array of slits in a metallic host, we discuss the differing roles of surface plasmon polaritons and Wood's anomalies in the observed behavior of such structures. Under certain circumstances, the first few excited modes appear to play…
The interaction, at a low temperature, between molecular hydrogen and the zeolite Li-FER was studied by means of variable temperature infrared spectroscopy and theoretical calculations using a periodic DFT model. The adsorbed dihydrogen molecule becomes infrared active, giving a characteristic IR absorption band (H-H…
The review covers the present state of studies of the urgent open questions concerning the nature, kinetics, and limit values of hydrogen sorption by carbon nanostructures. These questions are related to the key issues in the problem of building a hydrogen electrical automobile. Considered are the thermodynamic and di…
In vitro endothelialization of small-diameter vascular prostheses confluently lined with cultured autologous endothelial cells (ECs) before clinical implantation improves their patency. Many authors have studied the effects of shear stress on ECs seeded on various substrates showing activation of mitogen-activated pro…
Abstract This article discusses the production of blanks from low-carbon steel sheet and strip in dies in a mechanical or hydraulic press. It describes the cutting operations that are done by dies in presses to produce blanks. The applications of blanking methods are described with examples. The article reviews the ch…
The composites of polyaniline/multi-walled carbon natotubes (PANI/MWCNT) were prepared by electrostatic interaction between MWCNT and aniline via in situ polymerization. The results of Fourier transform infrared spectroscopy, Raman spectroscopy and ultraviolet-visible absorption spectroscopy indicated that aniline mol…
The bromophenol content of Polysiphonia lanosa, determined by GLC-MS, was shown to vary considerably between late spring and early autumn. The lowest content was found in material collected in early May and then the levels rose until a peak was reached in July. When the extracts were tested for cytotoxicity against DL…
Based on the results of the X-ray diffraction experiment, we implement the fractal concept to study the liquid structure of In-80wt% Sn at 300℃. Partially-overlapping multirange fractals in the melt In-80wt%Sn are observed. According to the characteristic of the partially-overlapping multirange fractals, a model of mu…
The Integral Fast Reactor (IFR) was a concept that promised inexhaustible, clean, safe, proliferation-resistant energy, with waste that needed isolation for only hundreds of years rather than tens of thousands. The development of the IFR was abandoned by the US government in 1994, as it neared completion, because too…
Half-doped manganese oxides are very important on clarifying physical mechanism of strong correlation electron system and colossal magnetoresistance (CMR) effec t due to their rich physical content. The structure, electrical and magnetic tra nsport properties of Nd0.5Ca0.5MnO3 manganite w as systemically studied. The…
The aims of this experiment are firstly to coducted a catalytic converter secondly, to find out to what extend Copeer and Crom ( CuCr ) as catalyst is effecient. To measure the concentration of Carbon Monoxide and Hidro Carbon on frame there are two conditions required. First is when the engine is on, and second is wh…
The first-principles plane-wave pseudopotential calculations have been done to evaluate the electronic structures, structural optimization, and formation energy of point defect in plutonium dioxide. The electron density of state and the charge density near the oxygen vacancy have been analyzed. The calculation results…