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。
We show that the rheological characteristics of a fresh cement paste can be determined from inclined plane tests. The apparent flow curve measured from inclined plane flows coincides with the apparent rheogram from classical rheometer tests and the flow curve obtained from local Couette flow measurements with magnetic…
The structural behavior of gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6], was determined by using Rietveld refinements based on synchrotron powder X-ray-diffraction data from 25 to 486°C. The structure was also refined at 25°C using synchrotron high-resolution powder X-ray-diffraction (HRPXRD) data that gave the pseudohexago…
Natural calcite crystals were ground to powder by high energy mechanical milling. Depending on the grinding conditions, powders can be pure calcite or calcite-aragonite mixtures, with a complex equilibrium between the two polymorphs of calcium carbonate. In any case, the mechanical milling is effective in reducing dom…
Quenched and tempered (Q&T) steels are widely used in the construction of military vehicles due to its high strength to weight ratio and high hardness. These steels are prone to hydrogen induced cracking in the heat affected zone (HAZ) after welding and HAZ softening. The use of austenitic stainless steel (ASS) co…
In situ spectroscopic ellipsometry (SE) was applied to study the pyramidlike and pillarlike growth of Al doped ZnO (AZO) films deposited by means of remote plasma-enhanced metalorganic chemical vapor deposition for transparent conductive oxide applications. Real time SE studies in the visible region allowed discerning…
Biofunctionalized nanocolloids offer a promising platform for creation of novel materials using addressable interactions. Crystalline phases are of especial interest for the development of novel plasmonic, magnetic, and catalytic metamaterials. When flexible single-stranded linker DNAs are added to the mixture of two…
Nanocube-based pagoda-like PbS hierarchical architectures have been fabricated by hydrothermal treatment of Pb(Ac) 2 and L-cysteine solution. It was suggested that a biomimetic mineralization process happened during the growth of the hierarchical architectures. The biomolecule, L-cysteine, exerts coordination, oriente…
The crystal structure of a mineral may be divided into two parts: (1) the structural unit , an array of high-bond-valence polyhedra that is usually anionic in character, and (2) the interstitial complex , an array of large low-valence cations, simple anions and (H 2 O) groups that is usually cationic in character. Int…
The enhancement of the spin-lattice relaxation rate for nuclear spins in a ligand bound to a paramagnetic metal ion [known as the paramagnetic relaxation enhancement (PRE)] arises primarily through the dipole-dipole (DD) interaction between the nuclear spins and the electron spins. In solution, the DD interaction is m…
DC conductivity and ac impedance measurements were made in air and in vacuum on samples of low density polyethylene to which nano-sized and micro-sized ZnO particles and a dispersant had been added. The samples were 150-200 mum thick. The temperature range was 30-70degC. The temperature dependence of the vacuum dc con…
Abstract Fuel cell vehicles running on hydrogen are seen as the long term solution to enable sustainable mobility. Compressed hydrogen gas storage systems are a promising route for storing hydrogen on board of vehicles, provided that a reliable and cheap material capable of withstanding hydrogen embrittlement is found…
Interaction between anionic (and cationic) colloidal particles of silica having the particles diameters 12 and 22 nm with synthetic cationic (and anionic) polyelectrolytes of various nature and structure was studied by potentiometric, conductimetric spectroturbidimetric and viscometric methods in aqueous solution. It…
The aim of this study was to investigate the influence of incorporating Bis-EMA4 monomer into experimental Bis-GMA/TEGDMA-based resin luting agents on the bond strength to dentin. Seven mixtures were prepared with the following ratios (wt%) of Bis-GMA/TEGDMA/Bis-EMA4: 50/50/0, 50/30/20, 50/10/40, 50/0/50, 30/10/60, 10…
no
This paper examines the link between polymer structure, temperature, and thermomechanics of shape-memory polymer networks. Strain to failure of the networks was extremely dependent on test temperature and reached a significant maximum near the onset of glass transition; a phenomenon denoted the deformability peak. A n…
We describe the synthesis and supramolecular properties of a bifurcated molecule decorated with two units of an in-house receptor for [60]fullerene, based on the electron donor exTTF, and a PC 61 BA derivative as recognizing units. This monomer self-assembles to form arborescent and dynamically polydisperse supramolec…
BACKGROUND: Targeted liposomes can be broadly defined as liposomes that are engineered to interact with a particular population of cells with the objective of delivering a payload or increasing their retention within the targeted cell population by means of a chemical interaction with cell-surface molecules or other t…
Nanostructured praseodymium oxides were successfully prepared via four different methods: two traditional methods (calcination of praseodymium nitrate and sol−gel method with propylene oxide) and two more sophisticated, modern techniques (citrate method and modified Pechini method). Powder X-ray diffraction revealed t…