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 surface organometallic chemistry (SOMC) of Ti(NMe2)4 and Ti(NMe2)3[N(SiHMe2)2] on periodic mesoporous silica (PMS) materials MCM-41 and SBA-1 was examined. While the smaller titanium amide gave the highest titanium loadings (e.g., Ti(NMe2)4@MCM-41: 12.1 wt%), a ligand-promoted silylation reaction competes effectiv…
Le béton de chanvre est un biomatériau composite léger obtenu en mélangeant un liant à base de chaux hydraulique et aérienne, des particules végétales et de l’eau. Ce matériau n’est pas porteur ce qui conduit à l’utiliser principalement en matériau de remplissage associé à une ossature bois, trois procédés de mise en…
It has been two decades since the first presentation of “A new model and theory on yield and failure of materials under complex stress state” at ICM-6 held at Kyoto, Japan in 1991. The twin-shear element model and a new strength theory were proposed at ICM-6. However, only the two equations were introduced, the charac…
A tri-functional ligand with hydrazone, oxime and o-vanillin subunits uses separate encoded coordination instructions to create a novel extended spin-coupled cluster where the hydazone oxygen and oxime groups of three ligands combine to create bridges linking ten Mn ions together, leaving organized O(6) end cavities c…
Specimens of (14)C-labeled polymer of 3-hydroxybutyric acid, P(3-HB), with different initial molecular weights, were used to prepare microparticles, whose morphology was not influenced by the M(w) of the polymer. During the particle preparation process, P(3-HB) molecular weight decreased by 15-20%. Sterile micropartic…
Novel one-dimensional heterostructures composed of single crystalline cubic SiC cores, intermediate amorphous SiO2 layers, and single crystalline hexagonal BN (h-BN) sheaths (i.e. SiC–SiO2–BN nanocable) have been successfully fabricated in large scale using SiC–SiO2 nanocables and ammonia borane as starting materials.…
Cu-Pt bimetal catalysts supported on nanocrystalline CeO 2 (nano-ceria) are synthesized via the low-cost sol-gel approach followed by impregnation processing. The average particle size of the catalytic composites is 63 nm. Ceria nanopowders sequentially impregnated in copper solution and then in Pt solution transforme…
The first bi- and mononuclear rhodium(I) complexes [{Rh(μ-OSi(8)O(12)(i-Bu)(7))(cod)}(2)] (5), [Rh(cod)(PCy(3))(OSi(8)O(12)(i-Bu)(7))] (6) with a hindered hepta(iso-butyl)silsesquioxyl ligand bonded to the rhodium(I) center through Rh-O-Si bonds have been synthesized and their structures have been solved by spectrosco…
Small molecular reagents that can efficiently functionalize water soluble CdSe/ZnS nanocrystals (NCs) are reported. These reagents do not cause quenching or precipitation of NCs as seen with commercially available activators. The results demonstrate that controlling the electrostatic character of the materials is crit…
Mesoporous silicas (MPS) are potential materials for adsorption of antibodies on their surface as they have the following features: a) an ordered pore network and b) a high surface area. These unique features make MPS an excellent candidate as an immobilizing carrier for immunoassays. We present here the relationship…
Contrast agents based on lanthanide tetra-propargyl DOTAM complexes suitable for temperature mapping by magnetic resonance spectroscopy (MRS) are reported. Sensitivity values from 1.05 ppm/°C to 1.76 ppm/°C were determined which represents an improvement of 2-3 times over currently available lanthanide temperature-res…
A systematic study on the encapsulation and drug release efficiency of L-leuprolide acetate (LeA) with a series of different functionalized poly(β-hydroxyalkanoate)s (PHAs) is reported. Significant differences on the in vitro release kinetics of LeA, depending essentially on the microstructure, chemical functionality,…
Abstract Liquid crystal properties make them useful for the development of security devices in applications of authentication and detection of fakes. Induced orientation of liquid crystal molecules and birefringence are the two main properties used in security devices. Employing liquid crystal and dichroic colorants,…
Aim : The present study was designed to investigate the neuroprotective effect of gamma-tocopherol on MPTP induced Parkinsonic mice. Materials and Methods: Oral administration of γ-tocopherol (48 mg/kg BW) in C57BL/6 mice for seven days. Parkinson's disease was induced by four intraperitoneal injections (from 4th to 7…
Effect of surface treatment on F-doped tin oxide (FTO) coated conductive glass substrate was studied for electrodeposition of ZnO employing reduction of dissolved oxygen in ZnCl2 aqueous solution, through electrochemical analysis and observation of the products. Prolonged electrolysis for O2 reduction reaction (ORR) r…
By introducing carbon nanotubes (CNTs) into lyotropic nematic liquid crystals, strongly enhanced viscoelastic behaviour results, allowing the extraction of very thin and long filaments in which the CNTs are uniformly aligned. The filament formation requires the liquid crystallinity of the host phase and it does not ta…
The effects of Yb addition on the microstructure and mechanical properties of Mg-5Al alloy are investigated. The results indicate that the addition of Yb to the Mg-5Al alloy facilitates the formation of a thermally stable Al2Yb phase, the refinement of the microstructure and the suppression of the volume fraction of M…
We develop an electrothermal transport model for nanocomposite thin films based on self-consistent solution of drift-diffusion and Poisson equations for electrons coupled with diffusive transport of heat. This model is used to analyze the performance of an electronic display the pixels of which are controlled by carbo…
Well-defined porous dextrans bound with glutathione (GSH) were prepared in four steps: (1) vinylation of dextran by reacting it with glycidyl methacrylate (GMA), (2) preparation of the aqueous phase with vinylated dextran, surfactant and reduced GSH, (3) HIPE polymerization of vinylated dextran initiated by AIBN in an…
In order to replace toxic nickel element from NiTi biomaterials, Ti-Cr and Ti-Cr-X alloys are also new nickel free titanium based alloys for biomedical applications. In this study, comparative study of Ti-xCr-3Sn (x=4, 5, 6, 7, 8 and 9 mol%) alloys was carried out. Ti-4Cr-3Sn and Ti-5Cr-3Sn alloys were composed of α′…