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。
A magnetized micro rotor such as 1.6 mm in outer diameter was prepared from a laminated isotropic nanocrystalline film with an optimized self-bonding layer. A relative density(RD) higher than 85 % in perpendicular direction of the above film could be obtained, and an estimated permeance coefficient, B/μoH, exceeded 20…
Linear programming problems for Na-Al-Si-O-H system have been formulated and solved for calculations of standard enthalpies and Gibbs potentials of zeolites with unknown thermodynamic properties. The calculations are based on dual solutions of linear programming problems. Comparison of numerical results with published…
With activated carbon for reducing agent, the sol‐gel method was used to prepare the giant magnetoresistance materials Sr 2 FeMoO 6 , which is the double Perovskite oxide. The structure, morphology, magnetic and electrical transport properties were investigated respectively by x‐ray diffraction, scanning electron micr…
We have studied the structure of two lipopeptides based on the simple dipeptide building block L-Phe-D-Oxd. These peptides have been reported previously to form fiber-like materials. The lipopeptides synthesized here had the structures C(n)(2)H((2n+1))CO-L-Phe-D-Oxd-OBn or C(n)(2)H((2n+1))CO-D-Phe-L-Oxd-OBn with n = 5…
The present investigation emphasizes biomimetic synthesis of silver nanoparticles (AgNPs) using an aqueous extract of Areca catechu and its impact on a Dalton's ascites lymphoma (DAL) mice model. The ultraviolet (UV) spectrum of AgNPs at 428 nm confirmed the spherical shape of the particles and average size of 80 nm w…
Supported Rh nanoparticles obtained by reduction in hydrogen of severely calcined Rh/Mg/Al hydrotalcite‐type (HT) phases have been characterized by FT‐IR spectroscopy of adsorbed CO [both at room temperature (r.t.) and nominal liquid nitrogen temperature] and Transmission Electron Microscopy (TEM). The effect of reduc…
We report in this communication the study of the intramolecular electron transfer through a 2,7-diethynylfluorenyl spacer in the Fe(II)/Fe(III) mixed-valent (MV) complex [(η(2)-dppe)(η(5)-C(5)Me(5))FeC≡C(2,7-C(21)H(24))C≡CFe(η(5)-C(5)Me(5))(η(2)-dppe)][PF(6)] (1[PF(6)]). The complex is generated in situ by comproporti…
In this paper, we introduce a sol-gel process for preparing Y 2Si2O7:Eu3+ nanocrystals. The rare earth compounds were dispersed in the SiO2 colloids and the monodisperse nano-scale composite materials were prepared. The reactant mass fraction and heat treatment temperatures could affect the structures and emission spe…
Luminescence properties of BaY 2 O 4 :Eu 3+ are investigated by the site-selective laser-excitation spectroscopy in the temperature region 15–300 K. The phosphors were synthesized by the Pechini-type sol-gel method for different Eu 3+ -concentrations. Three different crystallographic sites corresponding to two Y 3+ si…
Rheology plays a major role both in production and application stages of paints. Na-Bentonite, clay based thickening agent, is generally used to modify the viscosity of paints, since it is more economical and environmentally friendly compared to polymer based thickening agents. In solvent based systems bentonite is ge…
In this paper, a power series solution is used to study effect of intermolecular forces on the instability of multi walled carbon nanotube (MWCNT) probes/actuators in the vicinity of thin and thick graphite. A hybrid nano-scale continuum model based on Lennard-Jones potential is applied to simulate the intermolecular…
Inclusion of porphyrins as crosslinkers within aqueous block copolymer assemblies imparts water solubility to the hydrophobic macrocycle, provides critical structural information about the particle interior, gives unique pH-independent photophysical properties, and has the potential for future development of SOD mimic…
In this communication, we report a simplistic non-aqueous fabrication route for oleic-acid capped luminescent cadmium sulphide quantum dots at low temperature. The resulting quantum dots, obtained without using any complicated reagents, are cubic in phase, monodispersed and have excellent optical properties. The simpl…
Self-assembly of gold nanospheres with a very thin glass shell onto the surface of beads yields a plasmonically active micron-sized substrate for integrated solid-phase synthesis and label-free SERS analysis. The proof-of-principle of this approach is demonstrated by the vibrational spectroscopic discrimination of thr…
Polyurethane (PU) with mixed poly(ethylene glycol) / poly(ε-caprolactone) (PEG/PCL) soft segments is a representatively kind of degradable polyurethane material. Polyurethane foams (PUF) with mixed PEG/PCL soft segments were synthesized by using one pot method, and their mechanical and dynamic mechanical properties we…
Reversible change of the electric conductivity σUS in a temperature range of T = 110–180 K has been observed for the first time in gamma-irradiated and partly annealed (280°C) floating-zone grown silicon (n-Si-Fz) under the action of pulsed ultrasound (longitudinal wave) at a frequency of 6–10 MHz, intensity up to 4 ×…
The quasi-static and dynamic behaviour of Linear Low Density Polyethylene (LLDPE) and two LLDPE nanocomposites were studied. Nanocomposites consisting of LLDPE filled with 1% carbon black and 0.5% nanoclay fillers, by weight, were considered. Under quasi-static tensile loading, an improvement in the energy absorbing c…
Few technologies can produce meaningful power from low temperature waste heat sources below 250°C, particularly on a per-mass basis. Since the 1970’s energy crisis, NiTi shape memory alloy (SMA) and associated thermal engines have been considered a viable heat-to-power transducer but were not adopted due to previously…
GE’s DLN2.6 system opened the doors to single digit NOx emissions for F-Class industrial gas turbines. Today more than 500 DLN2.6 systems are installed worldwide. GE has recently advanced the technology of F-Class “Dry Low NOx” (DLN). The new DLN2.6+ technology achieves low-NOx emissions for 9FA and 9FB turbines. Turn…
BaTiO3–(Bi1/2Na1/2)TiO3 (abbreviated as BT–BNT) solid solution semiconducting ceramics, as a candidate for a lead-free PTC (Positive Temperature Coefficient of resistivity) thermistor usable over 130°C, were synthesized by adding CaO into the calcined powder. The CaO added BT–BNT ceramics showed semiconducting behavio…