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。
Thermally reduced graphene oxide (graphene) filled natural rubber (NR) composites were fabricated by melt mixing method. Dielectric constant, dielectric loss and a.c conductivity data of the NR composites are reported. Highest conductivity of 3 x 10-4 S/m was obtained for the composite with 3 wt. % graphene with initi…
A crucial factor in the design of safe and effective drug delivery systems is the development of biocompatible carriers, which offer the possibility to tailor the drug release kinetics for specific drugs. The determination of the factors controlling drug release, as well as the methods to adjust the properties of the…
Three-dimensional graphene-based aerogels have been promoted to present fascinating superelasticity and ultralightness by the intelligent design on microstructures. In this perspective, we conclude the recent design strategies to realize these dual elasticity and lightness, and look forward to the promising applicatio…
Nanocrystalline anatase powders synthesised by various chemical processes as super/subcritical fluid extraction, sol-gel technique and hydrolysis of titanium alkoxides in hydrogen peroxide were studied by X-ray diffraction (XRD) whole profile modelling method (WPPM) in order to reveal correlations between structural a…
Tempering of alloy steels in the temperature range of 400-600 °C causes temper embrittlement i.e. decrease in notch toughness of the material and the nil ductility temperature is raised to room temperature and above. The fracture in temper-embrittled steel is intergranular and propagates along prior austenitic grain b…
Ag nanoparticles were grown on glass substrate by spin coating of Ag ions (AgNO3) solution followed by either chemical reduction, in aqueous hydrazine or NaBH4 solution, or by thermal reduction in H2 environment. Effects of different reducing agent have been explained. Morphology and absorbance spectra ofAg nanopartic…
heprtment of yptoeletronis nd vighting ehnologyD pulty of iletril ingineering fiystok niversity of ehnologyD iejsk RShD ISEQSI fiystokD olnd
Based on Lindemann's criterion, a specific heat capacity model for nanoporous material was proposed by defining the surface-atom layer, to take the surface atoms and the volume atoms separately into account. The height of the surface-atom layer was determined from the experiment, and results show that only the first l…
Hydrogen can be produced for fuel cell applications by using methanol steam reforming reaction. In this article, a method was developed for regeneration of accelerated deactivated methanol-steam-reforming catalyst. Successive deactivation–regeneration cycles were studied in a 250 hours test for the first time includin…
Rare-earth ZE41 alloy possesses unique mechanical properties. However, the sharp potential difference between the rare-earth phases (cathode) inside the Mg matrix (anode) results in building up micro-electrochemical cells and enhancing galvanic corrosion. In chloride solution, the galvanic corrosion propagates and enh…
We present a specific heat measurement technique adapted to thin or very thin suspended membranes from low temperature (8 K) to 300 K. The presented device allows the measurement of the heat capacity of a 70 ng silicon nitride membrane (50 or 100 nm thick), corresponding to a heat capacity of 1.4 × 10(-10) J/K at 8 K…
This research investigates the effect of fiber, yarn and fabric variables on the bagging behavior of single jersey weft knitted fabrics interpreted in terms of bagging fatigue percentage. In order to estimate the optimum process conditions and to examine the individual effects of each controllable factor on a particul…
This paper examines the formation and stability of nano-complexes that could provide a new therapeutic approach against HIV-1 infection. Poly(propylene imine) glycodendrimers decorated with 2(nd) generation cationic carbosilane dendrons were generated and their use in polyplex formation checked. Owing to their positiv…
The polycrystalline samples of Bi1−xPr x FeO3 (x = 0 and 0.1) were prepared by a solid-state reaction technique. Preliminary X-ray structural analysis has confirmed the formation of a single-phase compound. Studies of dielectric and impedance spectroscopy of the materials, carried out in wide frequency (1 kHz-1 MHz) a…
Magnesium alloys, the lightest structural metal, are used in the field of aeronautics and astronautics more and more, however they are still limited for the poor corrosion resistant and high temperature property. In order to satisfy the need of long time store and short time operation at elevated temperature, coating…
Abstract The present study investigated the effect of the surface functional groups of nanosilica on the interfacial, crystallization, and thermal stability of polyamide 6/SiO 2 (PA6/SiO 2 ) nanocomposite, in which nanosilica was modified in situ with both 3-triethoxysilylpropylamine and 3-methacryloxypropyltrimethoxy…
Promising models and criteria of two-parameter fracture mechanics that take into account features of the stress-strain state in the vicinity of a cracklike defect are presented. Theoretical and experimental methods for assessing a crack path and the structural durability and vitality of damaged critical elements accou…
The effect of the initial structure of the alloy-fillers on the structure formation of the dissolution-diffusion type interfaces in macroheterogeneous composite materials with a metal binder has been investigated. It has been shown that by combining phases, which differ in resistance to molten binder in infiltration,…
Fiber-reinforced polymer composites have played a dominant role for a longtime in a variety of applications for their high specific strength and modulus. The fiber which serves as a reinforcement in reinforced plastics may be synthetic or natural. Past studies show that only synthetic fibers such as glass, carbon etc.…
Photochromic diarylethenes with an additional p system in the ethene bridge were synthesized by the condensation of 2,3-bis(2,5-di- methyl-3-thienyl)cyclopent-2-en-1-one with aromatic aldehydes. Absorption bands maxima of the initial and cyclic forms of the substances were determined and their thermal stability was st…