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。
In recent years, there has been growing interest of developing controlled drug/vaccine delivery system. Many polymers have been focused for delivery systems among them chitosan seems to be a better polymer because of interesting properties such as nontoxic, biocompatible, biodegradable, high charge density, muco adhes…
UV-curable perfluoropolyether (PFPE)-based fluoropolymer (PFPE-DMA) was synthesized and the photocuring behaviors of PFPE-DMA/HDDA systems with and without tertiary triethyl amine (TEA) were investigated using photo-DSC under air and nitrogen atmospheres. Photo-DSC analysis revealed that N2 purging and the presence of…
Palm Fatty Acid Distillate (PFAD) can be used as raw material for synthesis polyester. The aim of this research is to synthesis of polyester and to determine the effect of reaction time on polymerization methyl ester PFAD. The esterification stage was done at temperature 70oC, reactiontime 120 minute, reactant ratio 1…
Synthesis of layered SnO with a monocrystalline structure on a semiconductor substrate is demonstrated using a vacuum deposition method as well as diffraction, microscopy, and spectroscopy characterization.
W artykule przedstawiono nową analityczną metodę obliczania pola magnetycznego układów szyn prostokątnych. Metoda wykorzystuje prawa Biota-Savarta. Zaproponowana metoda pozwala na wyznaczanie rozkładu pola magnetycznego w układach równoległych szynoprzewodów prostokątnych o dowolnych wymiarach w tym szynoprzewodów o s…
EXPERIMENTAL 2-Hydroxy-4-methoxybenzaldehyde ( 99 %) and 2-hydroxy-5-bromobenzaldehyde ( 99 %) were purchased from Alfa Aesar and used without further purification. 1,2-Bis(aminooxy)ethane was synthesized according to an analogous method reported earlier The other reagents and
A new trinuclear nickel(II) complex with a Salen-type bisoxime chelating ligand (H2L), {[(NiL)2(OAc)2Ni]·n-BuOH·CHCl3}2·n-BuOH, has been synthesized and characterized. The X-ray crystal structure of the Ni(II) complex reveals that the unit cell contains two crystallographically independent but chemical identical trinu…
The aim of the present study is to formulate and evaluate enteric coated combination tablets of Rifampicin and Isoniazid with improved Rifampicin stability in in-vitro conditions. Rifampicin and Isoniazid were formulated separately as immediate release tablets. Then these tablets were evaluated for the various physica…
By using a semi-efficient vulcanization system, Alkanolamide (ALK) was incorporated into kaolin-filled natural rubber compound at 1.0; 3.0; 5.0 and 7.0 parts per hundred rubber (phr). An investigation was carried out to examine the effect of ALK on tensile properties of the kaolin filled-natural rubber compound. It wa…
A comparative study on the influence of different precursor salts of Er and Al for fabrication of rare‐earth‐doped optical fibers by modified chemical vapor deposition‐solution doping is presented. Experimental results reveal that among the different precursor salts under investigation halide precursors exhibit the hi…
Freeze drying of a porous Cu-Sn alloy with unidirectionally aligned pore channels was accomplished by using a composite powder of CuO- $SnO_2$ and camphene. Camphene slurries with CuO- $SnO_2$ content of 3, 5 and 10 vol% were prepared by mixing with a small amount of dispersant at $50^{\circ}C$ . Freezing of a slurry…
The lamellar matrix VOPO4.2H2O was used to the intercalation of nitrosyl (NO) ligand. The vanadyl phosphate matrix, as well as the prepared intercalated compound (VOPO4.NO.H2O), were characterized by infrared spectroscopy, thermogravimetry, X-ray difractometry, and SEM microscopy. The X-ray diffraction patterns shown…
The influence of the background concentration of CoCl2 on the selectivity of a Co(SCN) 4 2− -selective electrode based on QASs to thiocyanate is studied. The introduction of CoCl2 into a solution binds cobalt released from the membrane as thiocyanate complexes. A high selectivity of a Co(SCN) 4 2− -selective electrode…
A general approach to the structural and analytical characterization of complex bulk oxides that exploits the advantage of the atomic spatial resolution and the analytical capability of aberration-corrected microscopy is described. The combined use of imaging and spectroscopic techniques becomes necessary to the compl…
Temporarily solubilized reactive disperse dyes containing ${\beta}$ -sulfatoethylsulfonyl group were applied to 100% meta-aramid knitted fabric and their dyeing properties were investigated. Reactive disperse dyes showed relatively high K/S values on meta-aramid fabric when compared with conventional disperse dye or r…
Las modificaciones realizadas a la Ley de Residuos del D.F. en 2009 y 2010 propiciaron el uso de bolsas fabricadas con polímeros oxo-biodegradables. Estos materiales son susceptibles de biodegradarse si se han sometido a una etapa previa de oxidación mediante temperatura, radiación UV, fricción o una combinación de el…
Density (ρ), viscosity (η) and ultrasonic velocity (U) have been measured for a binary mixture composed of methyl formate and methanol at 303, 308 and 313 K.The adiabatic compressibility (β), acoustic impedance (Z), free length (Lf), free volume (Vf), internal pressure (πi), viscous relaxation time (τ) and Gibbs free…
El objetivo de la investigación fue desarrollar un material compuesto de polietileno tereftalato (PET) de post consumo y paja de trigo, para la elaboración de madera plástica. El PET es el plástico de mayor volumen y tonelaje en los rellenos sanitarios y basureros de Mexicali, Baja California, México; la paja de trigo…
The affinity coefficient and its extensions have both been used in hierarchical and non-hierarchical Cluster Analysis. The purpose of the present empirical study on the distribution of the basic and the generalized affinity coefficients and on the distribution of the standardized affinity coefficient, by the method of…
A simple one-step direct templating method is developed to synthesize hollow carbon and sandwich-like ZnO/C/ZnO micro/nanospheres. The type and shell thickness of the final products can be controlled by simply adjusting the reaction temperature. The removal of the templates can also be easily controlled during the syn…