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。
Four calamenene sequiterpenes, (+)-(7R,10S)-15-hydroxycalamenene (3), (+)-(7R,10S)-2,15-dihydroxycalamenene (4), (+)-(7R,10S)-2-hydroxy-15-calamenal (5), (+)-(7R,10S)-15-calamenal (6), along with the amorphane sesquiterpene (+)-(1S,6R,7R,10S)-1-hydroxy-3-oxo-amorph-4-ene (16), have been isolated from the Madagascan sh…
The nature of the chemical interactions between organic species and mineral surfaces and interlayers has significant implications for many geochemical processes and for medical and materials applications, but the molecular-scale characteristics of such interactions are poorly understood. Here we describe an experiment…
Abstract Poly (e‐caprolactone) (PCL) layered silicate nanocomposites have the advantage adding biocompatibility and biodegradability to the traditional properties of nanocomposites. They can be prepared by in situ ring‐opening polymerization of e‐caprolactone using conventional initiator to induce polymerization in th…
The effect of incorporating trisodium phosphate (TSP) in pea starch (PS) and acidified sodium chlorite (ASC) in calcium alginate upon the antimicrobial activity of TSP and ASC was studied against a 3-strain cocktail of Salmonella inoculated on chicken skin. The influence of polymer coating concentration on skin pH, co…
The reaction of the tridentate ligand-precursor molecule 1, o-HO-p-MeO-C 6 H 3 -C(Ph)=N-(o-C 6 H 4 )-OH, with diorganodichlorosilanes Me 2 SiCl 2 , Ph 2 SiCl 2 and PhAllSiCl 2 yields pentacoordinate silicon complexes R,R′Si[o-O-p-MeO-C 6 H 3 -C(Ph)=N-(o-C 6 H 4 )-O] (2a′: R, R′ = Me; 2b: R, R′ = Ph; 2c: R = Ph, R′ = A…
More than three decades of research have not solved the problem of storing hydrogen on board for transport fuel. Hydrogen storage therefore constitutes a major technological barrier to the hydrogen economy. The present paper considers why the problem is so tough and assesses the prospects for the two most popular stor…
The poling responses of [011]-poled Pb(Zn 1/3 Nb 2/3 )O 3 –PbTiO 3 [PZN–PT] single crystals of a range of compositions and two length orientations have been investigated. The results show that [011]-poled PZN–PT single crystals of [100]-length-cut exhibit much superior transverse properties than [011]-length-cut cryst…
The band structure, total and projected densities of states, and distributions of the valence and difference electron densities for copper and silver oxides are calculated in the framework of the density functional theory in the local approximation with ab initio norm-conserving pseudopotentials in the basis set of ps…
A CNT/ZnO nanocomplex was fabricated by attaching ZnO nanoparticles with various diameters to carbon nanotubes (CNTs). The as-prepared agglomerate ZnO nanoparticles were dispersed and positively charged by utilizing a cationic surfactant cetyltrimethylammonium bromide (CTAB). ZnO/CTAB micelles were subsequently anchor…
Giant volume magnetostriction (GVM) is detected near the Curie temperature T C in La1−x AxMnO3 single crystals (A = Ca, Sr, Ba, 0.1 ≤ x ≤ 0.3) and above T C in La1−x AgyMnO3 (x = y = 0.15, 0.2 and x = 0.2, y = 0.1) ceramics (in the latter system, giant volume magnetostriction attains a value of 6.5 × 10−4 in a magneti…
High-speed particle tracking with digital video creates very large data rates and as a result experimenters are forced to make compromises between spatial resolution, temporal resolution, and the duration over which data is acquired. The images produced in particle tracking experiments typically contain a large amount…
A salt fog test and an inclined plane test have been combined in order to trace changes in electrical and mechanical properties as well as in chemical stability of high temperature cured silicone rubber (HTV) samples containing interfaces. The interfaces were created in two different ways. The first technique, named a…
In this review, fundamentals of nuclear quadrupole resonance (NQR) spectroscopy are briefly outlined. Examples of its applications in drug development are discussed to demonstrate that the NQR method is a sophisticated, non-destructive and valuable analytical technique for studying pharmaceuticals, providing effective…
Long rod insulators made of porcelain and disc type insulators made of porcelain or glass are the main types of HV insulators used since more than 60 years in overhead transmission and distribution lines and also will be the dominating products in the future. Historically based, there exists much published work on the…
We have fabricated La0.7Ba0.3MnO3 (LBMO) thin films by a pulsed laser deposition technique using a low partial pressure (10−2 mbar) of O2+5% O3. In order to study the role of oxygen content in the transport properties, the temperature dependence of the resistivity has been measured as a function of the temperature and…
Abstract Here we report a very simple method to convert conventional CuO powders to nanoparticle interlinked microsphere cages by solution method. CuO is dissolved into aqueous ammonia, and the solution is diluted by alcohol and dip coating onto a glass substrate. Drying at 80 °C, the nanostructures with bunchy nanopa…
After appropriate mechanical and electrical treatments, some cellular polymers become able to retain space charge for a long time, i.e. they acquire electret behavior. The electrical treatment consists of charging under high levels of DC electric field. The mechanical treatment, based on the application of stretching…
Nano-submicrostructured CaWO4, CaWO4 : Pb2+ and CaWO4 : Tb3+ particles were prepared by polyol method and characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier transform infrared spectra (FT-IR), thermogravimetry-differential the…
Iron nanoparticles enclosed in carbon shells were formed by laser-assisted chemical vapor decomposition of ferrocene (Fe(C5H5)2) vapor in Ar gas atmosphere. The particle size dependence on the total ambient gas pressure and on laser fluence of the pulsed ArF excimer laser was examined and, e.g., an effective size decr…
Single crystals of the ternary layered compounds PbSb 2 Te 4 ( p -type) and PbBi 4 Te 7 ( n -type) have been grown by Czochralski pulling with melt supply through a floating crucible. The in-plane and out-of-plane thermoelectric power, electrical conductivity, and thermal conductivity of the PbSb 2 Te 4 and PbBi 4 Te…