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 comparison of degradation of modified poly(e-caprolactone) film in different environments is presented. Poly(e -caprolactone) was incubated in a natural environment - sea water (the Baltic Sea), in buffered salt solution, in liquid medium containing sea water with NaN3 and in compost with plant treatment activated…
The heat and flame resistance of the high performance fibers poly- p-phenylenediamine-terephthalamide (PPTA), co-poly( p-phenylene-3,4-oxidiphenylene-terephthalamide) (TECH) and Poly( p-phenylene-2,6-benzobisoxazole) (PBO) fibers is studied. It is shown that for an organic polymer PBO has exceptional heat and fire res…
In part I, we have shown experimentally that the large amount of work softening is due to decreasing activation enthalpy for plastic deformation with increasing plastic strain. Based on the Peierls mechanism of the dislocation glide, the plastic deformation process in a quasiperiodic lattice is modelled. In the model,…
From the viewpoint of "supramolecular chemistry", control of crystal and electronic structures of molecular conductors is described. We have developed a variety of cation and anion radical salts containing supramolecular assemblies. For the formation of the supramolecular structures, two types of supramolecular syntho…
A terbium m -methylbenzoate complex with 1,10-phenanthroline, [Tb( m -MBA) 3 phen]·H 2 O has been obtained from ethanol solution, where m -MBA= m -methylbenzoate and phen=1,10-phenanthroline, and its structure determined by X-ray diffraction methods. The unit cell contains binuclear molecules of the title compound. Ea…
Freeze-dried collagen scaffolds can be used for a variety of medical tissue engineering applications. The pore structure of the scaffolds might play a decisive role for the inoculation, growth and differentiation of the cells. For a controlled 3D-cell growth the pore structure needs to be homogeneous and the pore size…
The air penetration within a porous clothing system on a moving human is an important physical process that considerably affects the heat and moisture resistance of the textile material. This effect of the coupled convection heat and mass exchange within the clothing system is experimentally investigated and theoretic…
The effect of microstructure on the ferromagnetic shape memory effect in Fe–Pd alloys was examined focusing on the orientation distribution, the grain boundary character and the grain size. Fe-29.7–31.0 at.%Pd polycrystals composed of columnar or equiaxed grains were prepared and their magnetostriction was measured un…
High-pH stress corrosion cracking (SCC) failures of underground pipelines have occurred in a wide variety of soils, covering a range in color, texture, and pH. No single characteristic has been found to be common to all of the soil samples. Similarly, the compositions of the water extracts from the soils have not show…
Powder X-ray diffraction experiments of the antiferroelectric PbHfO 3 were performed between 8K and 525K using a conventional X-ray generator and a synchrotron radiation. Antiferroelectric superlattice reflections and reflections at R-point appeared below 435K on heating. Reflections associated with a large cell volum…
The dielectric properties of organic-porous silica films deteriorate after photoresist removal processing. plasma ashing has been commonly used to remove photoresist. Nevertheless, the plasma will destroy the functional groups and induce moisture uptake in porous silica films. In this study, trimethylchlorosilane (TMC…
Structural analysis of the solvated mixed-valence (MV) trinuclear iron carboxylate, [Fe3O(HCO2)6(γ-pic)3]·x(γ-pic), 1, (γ-pic = 4-methylpyridine; x ≈ 1.3), has been performed from X-ray diffraction data at four temperatures. Analysis of the X-ray diffraction and variable temperature Mössbauer data for 1 clearly shows…
At –25°C, the sequential block copolymerizations of 4-(tert-butyldimethylsilyloxy)styrene (TBDMSS) and 4-methylstyrene (4MS) were investigated by using a syndiospecific living polymerization catalyst system composed of (trimethyl)pentamethylcyclopentadienyltitanium (Cp*TiMe3), trioctylaluminum (AlOct3) and tris(pentaf…
The luminescent property of Eu 3 + in ( Sr 0.99 La 1.01 ) Zn 0.99 O 3.495 solid solution was systematically examined. ( Sr 0.99 La 1.01 ) Zn 0.99 O 3.495 was newly found in the Sr-La-Zn-O system. Under ultraviolet excitation, emission intensity increases with increasing Eu 3 + concentration to y = 0.7 in ( Sr 0.99 La…
Diamond like carbon (DLC) films were deposited on to titanium (Ti) substrates by Plasma Enhanced Chemical Vapour Deposition (PECVD) process. The quality of the films were checked by Raman spectra and nano-hardness tests. The cytocompatibility of titanium and DLC coated titanium were studied using continuous cell lines…
Shear bands were generated under prescribed and controlled conditions in stainless steel (Fe‐18%Cr‐8%Ni). Hat‐shaped specimens, deformed in a Hopkinson bar were used, yielding strain rates of approximately 104s−1 and shear strains that could be varied between 1 and 100. Specimens recovered from the collapse of thick‐w…
The effects of several critical assumptions and parameters on the computation of strain energy release rates for delamination and debond configurations modeled with plate elements have been quantified. The method of calculation is based on the virtual crack closure technique (VCCT), and models of the upper and lower s…
In many intensive agroecosystems continued inputs of phosphorus (P) over many years can significantly increase soil P concentrations and the risk of P loss to surface waters. For this study we used solid-state 31P nuclear magnetic resonance (NMR) spectroscopy, high-power decoupling with magic angle spinning (HPDec–MAS…
In order to investigate the mechanical properties of Gd123 single-grain bulk superconductors fabricated using a modified QMG method, tensile tests in the direction of the a/b-or c-axis of small specimens cut from bulk samples have been carried out at 293K. As for the mechanical properties perpendicular to the c-axis,…
In-situ reaction and texture development were investigated during heat treatment in reactive templated grain growth (RTGG) processing for textured SrTiO3 (ST) ceramics. Platelike Sr3Ti2O7 (S3T2) particles were used as a template and aligned S3T2 particles were heat-treated with stoichiometrically required amounts of T…