Materials Literature
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The extracts of Calotropis procera were as investigated for its anti-hyperglycemic, effect in Male Wister Albino rats. Diabetes was induced by administration of single dose of streptozotocin (STZ, 50 mg/kg, I.P). The pet ether, methanol and aqueous extracts of leaves of C. procera at dose of 250 mg/kg, per oral were a…
Wereviewthesolid-stateNMRliteratureforthe 35/37 Cl, 79/81 Br,and 127 Inuclides, with coverage up to August 2008. The theory related to NMR spectroscopy of half-integer quadrupolar nuclei in powdered samples is briefly summarized, as are the experimental methods for recording such spectra. The most recent experimental…
The paper presents the results of studies aimed at the assessment of the antimicrobial activity of filtrating meltblown nonwoven used in the production of protective half-masks. Polypropylene nonwoven materials containing a biologically active compound in their composition - Ag/AgCl ions on different carriers: ZnO, Ti…
Electron probe microanalysis (EPMA), inductively coupled plasma atomic emission spectrometry (ICP-OES), and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) were applied to study the interaction of molten LiF-NaF salt mixtures with candidate structural materials (alloys) for a nuclear reactor-tr…
Corrosion inhibition of mild steel was studied using L-Dopa in aqueous hydrochloric acid and sulphuric acid solutions. The corrosion behaviours of the steel specimen in the presence of inhibitor weret studied by galvanostatic polarization and weight loss techniques. The measured electrochemical data indicated good inh…
Electrochemical Stability of Orthopedic Porous NiTi Shape Memory Alloys Treated by Different Surface Modification Techniques, Wu, Shuilin, Liu, Xiangmei, Hu, Tao, Jiang, Jiang, Chu, Paul K., Yeung, K. W.K., Chung, C. Y., Chu, C. L., Xu, Zushun, Lu, W. W., Cheung, K. M.C., Luk, K. D.K.
Large amounts of chlorosilanes, especially SiCl4 and CH3SiCl3, are produced as side-products of the industrial fabrication of solar or electronic grade silicon and the Müller-Rochow process. It was a goal of the present study to transform these compounds into useful chlorine-free precursors for Si/(C)/N ceramics via a…
We explore several aspects of reliability in carbon nanotube transistors, including their physical dependence on diameter. Avalanche behavior is found at high fields (5-10 V/mum), while Joule breakdown is reached at high current and heating, in the presence of oxygen. Finally, we describe a method for minimizing hyste…
Electrically conductive adhesives composed of a multi-functional epoxy-based matrix containing micro- and nano-fillers with bimodal and trimodal size distributions were prepared in order to investigate their electrical and thermal conductivities. When Ag flakes were used as the filler, anisotropy was clearly observed…
Poly(methylsilsesquioxane)-based hybrid polymers carrying orthogonally reactive moieties demonstrate an effective modular approach to creating multi-reactive surface coatings. By a sequential surface-analogous reaction different functions could be immobilized in a defined ratio, resulting in dual- or triple-functional…
Conjugated polymer monolayers have successfully been fabricated on a TiO(2) nanocrystalline electrode by a lateral intermonomer charge transfer process, extending the photo-induced charge separated state lifetime by a factor of 50-70.
Nanocomposites based on high-density polyethylene-grafted maleic anhydride (HDPE-g-MA) were prepared by in situ reactive melt mixing using a twin-screw extruder. The effects of different modified clays and maleic anhydride content on intercalation and mechanical properties were studied. The nanocomposites were charact…
Mixed ionic–electronic conducting nanocomposite La0.8Sr0.2Ni0.4Fe0.6O3 (LSNF)–Ce0.8Gd0.2O2– δ (GDC) was prepared via ultrasonic dispersion of nanocrystalline powders of perovskite and fluorite oxides in water with addition of surfactant, followed by drying and sintering up to 1300°C. Analysis of the real structure of…
One of the current limitations in using electrospun nanofibrous materials for tissue engineering is that cells have difficulty penetrating into the materials. For this, multi-layered electrospun structures composed of polyurethane (PU) and poly(ethylene oxide) (PEO) were fabricated and tested in vitro. A 20% (w/v) PU…
Some computational results on dendritic growth in binary alloy are obtained by using a phase–field model coupled the solute gradient term. The effect of crystalline anisotropy on the morphological formation, tip steady state and the solute partition is investigated for different dendrites. The interface formation and…
Thermomagnetic recording uses local heating of ferromagnetic media to locally decrease coercivity and change saturation magnetization of the material and alleviate magnetization reversal. A modified Landau–Lifshitz equation is proposed as a phenomenological model to allow for changes in magnetization magnitude and is…
An apparatus to evaluate UV shielding properties of fabrics is developed. The apparatus consists of three parts; light source, sample holder and photo sensor. Light source is UV LED of which peak wave length is 378 nm. Photo sensor is silicon photo diode. Using this apparatus, the effect of measurement condition, fibe…
This work is focused on the role of gold and Al 3 CrO 6 support for physicochemical properties, and catalytic activity of supported nickel catalysts in partial oxidation of methane (POM). Catalysts, containing 5% Ni and 5% Ni-2% Au active phases dispersed on mono- (Al 2 O 3 , Cr 2 O 3 ) and bi-oxide Al 3 CrO 6 support…
The superhydrophobic property attracts many researchers in the both field of academe and industry. All of the superhydrophobic materials have the rough surface structure based on the Cassie-Baxter equation. The trapping of air into the rough surface structure caused the improvement of the superhydrophobic property. Th…
The effect of some amidopoly ethylamine, with different numbers of ethylamine units, on the corrosion of zinc electrode in ZnCl 2 , NH 4 Cl and (ZnCl 2 + NH 4 Cl) electrolytes has been studied using galvanostatic polarization measurements. The inhibition efficiency was found to increase with increasing concentration,…