Materials Literature
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Significantly prolonged survival rate was obtained for the first time using carcinoma mice models after the administration of single-component liposomes of dimyristoylphosphatidylcholine (DMPC) without any drug. An increase in lymphocytes under optical microscope was observed without any increase in the neutrophils co…
The crystal size of nanocrystalline CdS and CdSe films, electrodeposited from dimethyl sulfoxide solutions containing a Cd salt and elemental S or Se, is shown to depend on the nature of the anion of the Cd salt. Relatively strongly adsorbing anions, such as chloride, result in a smaller nanocrystal size than relative…
A new thermally stable oxo-bridged dinuclear nickel(III) complex has been synthesised and its crystal structure showed two nickel(III) ions with distorted square pyramidal coordination geometry.
This paper describes electrically conductive polymer blends consisting of polyaniline (PANI) dispersed in a polymer matrix. Melt blending of previously mixed, coagulated and dried aqueous dispersions of PANI and the polymer matrix lead to high conductivities at extremely low PANI concentrations (∼0.5 wt% PANI). In the…
Encapsulation of doxorubicin (Adriamycin) in liposome (LipADM) augments the anti-tumor effects of the drug and reduces side effects such as cardiotoxicity. However, it does not always enhance anti-tumor effects because of entrapment by the reticuloendothelial system. In this study, we investigated the anti-tumor effec…
We use the well-established functionals LDA, BLYP, BP86, BP91 and B3LYP as well as the more recent HCTH, PBE and PBE0 functionals to investigate the density functional theory (DFT) metal nuclear magnetic shieldings in ten transition-metal complexes ([Co(CN)6]3−, [Co(NH3)6]3+, Cr(CO)6, [CrO4]2−, Fe(CO)5 , Fe(C5H5)2, [M…
A mathematical model for the galvanostatic discharge and recovery of porous, electrolytic manganese dioxide cathodes, similar to those found within primary alkaline batteries is presented. The phenomena associated with discharge are modeled over three distinct size scales, a cathodic (or macroscopic) scale, a porous m…
The incorporation of Ga into the framework of zeolite Beta has been evidenced by X-ray absorption spectroscopy. Analysis of extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) data reveals the atomic environment of Ga in zeolite Beta. Both techniques provide evidence that…
The experimentally-optimized optical resolution of DL-phenylglycine (PG) with (1S)-(+)-camphor-10-sulfonic acid ((+)-CS) afforded the crystalline D-PG·(+)-CS salt in 45.7% isolated yield and 98.8% optical purity. This excellent resolution has been studied by comparison of the crystal properties of the diastereomeric s…
An investigation was conducted to determine the feasibility of analysing cement by introducing it as a slurry into an inductively coupled plasma optical emission spectrometer (ICP-OES). A complete analysis of cement for major (Ca, Si, Mg, Al, Fe) and minor and trace elements (S, K, Ti, Na, P, Mn and Sr) was accomplish…
The chemistry of cyclosilazanes and borazines is a topic of current interest in view of preceramic polymers which yield on pyrolysis various useful ceramic materials, e.g. silicon and boron carbide, silicon and boron nitride, and ternary or quaternary mixtures of these materials. These materials are hard and have high…
Bi 2 (Zn 1/3 Nb 2/3 ) 2 O 7 (BZN) thin films were prepared by using a pulsed laser deposition technique. For films in situ deposited on indium–tin oxide (ITO) coated glass substrates, the crystalline phase can be obtained by growing at a substrate temperature (Ts) higher than 475 °C. Too low a substrate temperature (T…
The sweeping of small dipolar loops by gliding dislocations is thought to be one of the mechanisms leading to dislocation pattern formation during cyclic deformation. The individual sweeping event was calculated within the framework of isotropic linear elasticity for an infinite straight gliding segment and a rigid di…
Doxorubicin loads quite efficiently into preformed citrate containing liposomes (<200 nm) in response to an inside-acidic pH gradient: >95% loading for drug/lipid as high as 1:1 w/w. In fact, doxorubicin's loading was found to exceed theoretical predictions because it forms an insoluble complex with citrate. In this r…
This paper summarises the latest developments of the proposed acoustic emission technique. Acoustic emission signals have been processed using the three-dimensional /spl phi/-q-n distribution and the influence of electric stress, void size, void shape and test time studied. The attenuation of the AE signal through dif…
Apparent mobilities of positive charge carriers in a regioregular poly(3-octylthiophene) (POT) film at various doping levels are evaluated by an electrochemical technique combining potential-step chronocoulometry and an in situ conductivity measurement. The carrier mobility decreases from 5 × 10−3 cm2 V−1 s−1 to 5 × 1…
Improvement of electrical conductivity was attempted by polymerizing octacyanometallophthalocyanine (MPcOC; M ≡ Fe , Co ) units into one-dimensional molecular complexes. The synthetic route to MPcOC was established by reacting tetracyanobenzene with a metal(II) acetate in sulfolane. Poly(μ-pyrazine)octacyanophthalocya…
The conductivity modulus in fast ion conductors (FIC) has often been fitted with stretched exponential relaxation functions of the form $\mathrm{exp}[\ensuremath{-}(t/{\ensuremath{\tau}}_{K}{)}^{\ensuremath{\beta}}],$ where the \ensuremath{\beta} values are taken to be independent of temperature. This analysis corresp…
The effects caused by cryogenic treatment (freezing–frozen storage–thawing) of 0.5–2.0 g/dL solutions of individual starch polysaccharides, namely, amylopectin (solvents: water or 0.35M NaCl aqueous solution) and amylose (solvent: 0.35M NaCl aqueous solution), and also of 0.5 g/dL solutions of their artificial mixture…
This paper describes in terms of the mass of the solvents in the oil, water, and distillate phases the curing process of highly spheric monodispersed 4-mm-in-diameter polystyrene capsules of a uniform thickness. It was determined that the water solubility of the solvents is crucial in the solvent selection in order to…