Materials Literature
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The strong dependence of the intensity of single bubble sonoluminescence (SBSL) on water temperature observed in experiment can be accounted for by the temperature dependence of the material constants of water, most essentially of the viscosity, of the argon solubility in water, and of the vapor pressure. The strong i…
A highly specific and effective magnetic resonance imaging (MRI) contrast agent was prepared by coating super-paramagnetite particles with monoclonal antibodies (MAbs) directed against epidermal growth factor receptors (EGFRs), which are over-expressed in esophageal squamous cell carcinoma. The preparation maintained…
Intraband spectra of CdSe nanocrystal colloids are observed. The photoexcited nanocrystals, of average diameters 31.5, 38, and 43 Å, exhibit an isolated and strong infrared-induced absorption with peak energy between 0.5 and 0.3 eV. The energies and cross sections of the resonance are consistent with a one-electron tr…
Susceptibility and high field magnetization measurements have been performed on powdered samples of $[{\mathrm{Ni}(333\ensuremath{-}\mathrm{tet})(\ensuremath{\mu}\ensuremath{-}{\mathrm{N}}_{3}){}}_{n}]({\mathrm{ClO}}_{4}{)}_{n}$ [333-tet denotes tetraamine ${N,N}^{\ensuremath{'}}$-bis(3-aminopropyl)-1,3-propanediamine…
Experimental and theoretical investigations of intermetallic semi-Heusler compounds (CoTiSn, FeTiSb, CoTiSb, NiTiSn, CoNbSn, CoVSb, NiTiSb) and their solid solutions are presented. The physical properties of these systems are found to be mostly determined by the number of valence electrons. Resistivity experiments sho…
The magnetoresistance behavior of Fe3O4 in polycrystalline thin film, powder compact, and single-crystal form are compared. Negative magnetoresistance with peaks at the coercive field, observed in thin films and powder compacts but not in the single crystal, is due to field-induced alignment of the magnetization of co…
The stability of a nematic phase in binary mixtures of liquid crystals (LC) with non-nematogenic solvents, was analyzed using the combined Flory–Huggins and Maier–Saupe models. Stability was described using general criteria developed by Dorgan [Liq. Crys. 10, 347 (1991)], applied to the g(φ1,s) function describing the…
The surface plasmon enhancement effect on adsorbed molecules at elevated substrate temperatures is studied theoretically using surface enhanced Raman scattering (SERS) as an example. The surface structure is idealized to be a monodisperse spherical particle with its nonlocal dielectric response accounted for. The temp…
Asymmetric patterns of streaming around a single sonoluminescent bubble have been observed by Lepoint-Mullie and co-workers. The present paper considers theoretically the viscous streaming from a spherical bubble undergoing small radial and lateral oscillations simultaneously, using an extension of the method of David…
In this article, the synthesis and properties of the (ethylene-vinyl acetate-vinyl alcohol) terpolymer are studied in detail. A transesterification reaction with alcohols was conducted on poly(ethylene-vinyl acetate) to obtain terpolymers with varying hydroxide contents through three different routes: in solution, in…
The synthesis of low-molecular-weight (Mw (GPC) < 72000 g mol) lactic-acid-based telechelic prepolymers by condensation polymerization of L-lactic acid was investigated. All polymerizations were carried out in the melt, using tin(II)octoate as catalyst, different diols, and different polymerization temperatures. The p…
:Tb thin films have been successfully produced from dichloride ethoxide of zirconium, OEt EtOH and by the sol - gel process. These films show luminescent properties when they are excited with UV light (270 nm). The luminescence spectra present typical transitions from the level belonging to the trivalent terbium ion.…
Nanocrystalline MgO has been sol−gel manufactured to give a range of crystallite sizes from 1.8 to 35 nm as determined by powder X-ray diffraction. A multinuclear magnetic resonance approach using 13 C, 17 O, and 25 Mg provides information on the atomic scale structure. It is found that despite extensive hydrolysis th…
The flammability properties of an intumescent fire retardant polypropylene added with magnesium hydroxide was discussed in this study. To evaluate the flammability of the material, limit oxygen index, smoke emission, tensile strength, and our exploitation dynamic flammability evaluation system, tests were assessed in…
Jute, unlike other natural fibers, absorbs moisture and its moisture regain property is quite high. Water migration and subsequent degradation of jute-based composites can be a problem. Because jute is hydrophilic and the matrix resins are mostly hydrophobic, wetting of the fibers with resins is poor, for which high r…
Siliceous MCM-41 samples were modified by silylation using trimethylchlorosilane (TMCS). The surface coverage of functional groups was studied systematically in this work. The role of surface silanol groups during modification was evaluated using techniques of FTIR and 29 Si CP/MAS NMR. Adsorption of water and benzene…
We study numerically the dynamic and spectral properties of a one-dimensional quasi-periodic system, where site energies are given by with denoting the k th quasiperiodic lattice site. When is given by the reciprocal lattice vector with n and m being successive Fibonacci numbers, the variance of the wavepacket is foun…
Catalytic wet-oxidation of a model domestic wastewater was carried out, and improvement of the performance of the previously developed Mn/Ce and Ru/Ce catalysts was attempted. Combination of both catalysts resulted in an increase in the catalytic activity; Ru/Mn/Ce (1/9), which had an atomic ratio of Mn to Ce of 1/9 a…
Oligodeoxynucleotides containing an alkylporphyrin linked to the phosphate groups of DNA via oxypropyl chains have been synthesized. To our knowledge, these are the first porphyrin−nucleic acid conjugates bearing the porphyrin embedded in the backbone of DNA. Chain assembly was achieved by automated solid-phase synthe…
The structure and thermal decomposition of unsupported and titania-supported 12-phosphoromolybdic acid (HPMo) and its Co and Ni salts have been studied by different techniques including X-ray diffraction, thermogravimetric analysis, FT-infrared, Raman, and X-ray spectroscopic techniques. The transformation of heteropo…