Materials Literature
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Systematic studies based on 1H NMR and 13C NMR indicated that the alkylthio group behaves as a weak electron-withdrawing group in a simple aniline system like 2-butylthioaniline, while the same alkylthio group clearly acted as a resonance electron-donating group in higher conjugated aniline trimer systems, like butylt…
Herein we present the first unequivocal evidence of the ability of isotactic N-alkyl acrylamide oligomers to assume self-assembled sheet-like structures that are reminiscent of protein beta-sheets.
The traditional eutectic solidification theories always stress the role of eutectic growth and morphology selection. However, when a eutectic alloy solidifies freely from an undercooled state, the first step commences from nucleation and then follows eutectic growth. This paper reviews the free solidification behavior…
A method to determine the volumes of ordered mesopores and complementary small pores in polymer-templated ordered mesoporous silicas and organosilicas is proposed on the basis of the existing relation between the pore width and unit cell values obtained by the XRD structure modeling and the adsorption pore volume.
Effects of increase in absorption of electromagnetic radiation, enhancement of photoconductivity in 2D photonic macroporous silicon were investigated. Dependence of photoconductivity on a corner of falling of electromagnetic radiation was founded out. Primary absorption of p-component of electromagnetic radiation, pre…
We report on the study of the electrochemical behavior of copper and brass electrodes in concentrated aqueous solutions. Passive films are formed on the surface of anodically polarized, pure polycrystalline copper and a alloy (α-brass), in aqueous 30% (7 M) and 45% (11.7 M) electrolyte solutions, at two characteristic…
Highly arrayed ZnO nanorods were fabricated on the Si substrate buffered with patterned ZnO film (ZnOf∕Si) via wet-chemical process. The growth behavior and morphology of single-crystal ZnO nanorods (ZNs) were investigated in terms of the annealing temperatures of the sputtered ZnO film. We found that the growth morph…
Nimodipine is a dihydropyridine calcium antagonist used in clinical trials in the treatment of ischemic damage in subarachnoid hemorrhage and commercially available as nimotop intravenous infusion solution and tablets. However, due to its poor solubility in water, intravenous administration depends on the use of the d…
The exploration of the Na–Co–P–O system has allowed a new cobaltophosphate Na2Co8(PO4)6 with an original tunnel structure to be synthesized. The framework [Co8P6O24]∞ consists of a complex arrangement of corner and edge sharing CoO5 pyramids and PO4 tetrahedra forming large tunnels running along and . In this structur…
In the present work, the electrical and mechanical properties of epoxy nanocomposite materials were studied. The hydrophobicity of the insulating material was analyzed through contact angle measurement. The diffusion coefficients of the material with different percentage of clay in epoxy nanocomposites were calculated…
BACKGROUND: Polyhydroxyalkanoates (PHA), are biodegradable polyesters derived from many microorganisms such as the pseudomonads. These polyesters are in great demand especially in the packaging industries, the medical line as well as the paint industries. The enzyme responsible in catalyzing the formation of PHA is PH…
Investigation of material behaviour under extremely high pressures and temperatures using IR laser-heated diamond anvil cells (DACs) has emerged in the recent years as an important area of research, both basic and applied. This article presents details of a laser-heated DAC facility that we have recently set up at our…
A committee at Japan Power Engineering and Inspection Corporation was organized to evaluate long-term creep strength and to review current allowable tensile stress of creep strength enhanced ferritic steels. In FY2005, allowable tensile stresses of KA-STPA29 type steels (ASME Gr.92), KA-STPA24J1 type steels (ASME Gr.2…
The aim of this study was to use magnetic resonance (MR) techniques to non-invasively compare the effects of the three leading vascular disrupting agents, namely combretastatin A-4 disodium phosphate (CA4DP), 5,6-dimethylxanthenone-4-acetic acid (DMXAA) and ZD6126. A C3H mouse mammary carcinoma grown in the right rear…
The aim of this study was to investigate the use of thermotropic liquid crystalline (TLC) blends of 4-pentyl-4'-cyanobiphenyl (K15) and 4-heptyl-4'-cyanobiphenyl (K21) with appropriate nematic to isotropic phase temperature (Tn - i) just above body temperature as a temperature-modulated drug permeation system. Using d…
Abstract Zero‐field susceptibility and specific heat of Pb[Cu(SO 4 )(OH) 2 ] (linarite) single crystal were measured. In order to verify that linarite is a quasi‐one‐dimensional system with competing nearest‐neighbour and next‐nearest‐neighbour in‐chain exchange interaction ( J 1 ≈ –30 K, J 2 ≈ 15 K), theoretical resu…
The X-ray structure is reported of a diprotonated Gd(III) tetra-aqua complex of the ligand 1,4,7,10-tetrakis(carbamoylmethyl)-1,4,7,10-tetraazacyclododecane (DOTAM), a thermodynamic intermediate in metal ion association and dissociation pathways.
The synthesis of a series of open U-shaped bis-porphyrin cavity molecules is described, with bridged bicyclic backbones to confer rigidity, and a pendant substituted aromatic probe unit suspended on the inside of the cavity. The dimensions and flexibility of the bis-zincporphyrin cavity were probed using several diffe…
The plasma-wet chemical hybrid process for NOx removal from the flue gas emissions is extremely effective and economical in comparison with the conventional selective catalytic reduction system. A series of experiments using the plasma-wet chemical hybrid system are performed to control NOx from the diesel engine emis…
Syntheses of hydrotalcite-like materials (HT), functional inorganic materials having layered structure of complex hydroxide, were carried out using aluminum dross, white dust and waste solution containing Mg in an aluminum regeneration process as a raw material. The removal of toxic anions such as As(III) and As(V) we…