Materials Literature
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Intratumour heterogeneity in the uptake of blood-borne technetium-labelled human serum albumin ((99m)Tc-HSA) was studied in human melanoma xenografts in an attempt to identify transport barriers leading to inadequate and heterogeneous uptake of macromolecular therapeutic agents in tumours. The Bioscope imaging system,…
Two series of unsymmetrical diphenyl-1,3-diketones, each species bearing one terminal alkene, have been synthesized. These diketones have been converted into their respective unsymmetrical diphenylisoxazoles [3(5)-(4-ω-alkenyloxyphenyl)-5(3)-(4-alkoxyphenyl)isoxazoles] which have been isolated as equal mixtures of two…
Ceria and doped ceria nanopowders synthesized in flames from submicrometer-sized droplets of precursor solutions demonstrate several characteristics that promise superior performance when used to fabricate electrolytes for solid oxide fuel cells relative to powders synthesized using other technologies. Combustion chem…
-chymotrypsin were fabricated by sequential adsorption technique. Protein aggregates preparedby salting out were consecutively treated by oppositely charged polyelectrolytes to yield polyelectrolyte microparticles contai ning protein. Majorcharacteristics of microparticles such as incorporation efficiency and protein…
The syntheses of basic bismuth(III) nitrates under hydrothermal conditions and their dry decomposition to α-Bi2O3 in solid-state reactions was investigated by in-situ synchrotron X-ray radiation powder diffraction. Three basic bismuth(III) nitrates with known structures are: [Bi6O4(OH)4](NO3)6·4H2O, C, [Bi6O4(OH)4](NO…
Electron-beam (E-beam) lithography has been applied to porous silicon substrates. In contrast with optical lithography, the whole process is fully compatible with the material, without any need for particular previous treatments. Porous silicon behaves as a low density substrate, allowing fine writing even at moderate…
Since the factors that influence microstructure formation are extensive (e.g., alloy composition, heat treatment condition, etc.), quite a lot of experimental trial-and-error is often necessary when searching for the best combination of desired microstructure and material properties, even when the basic mechanism of m…
In recent years the need to standardize measurement protocols for quantifying the degree of ultraviolet radiation (UVR) protection provided by clothing has led to the introduction of a number of standards around the world. To date, these standards have specified spectral measurements of UVR transmission by clothing an…
Partial electronic and hole conductivity in Co doped LaGaO3 based perovskite oxide was investigated with the ion-blocking method. Typical S-shaped polarization curves were observed on La0.8Sr0.2Ga0.8Mg0.2−XCoXO3 (0 < X < 0.1). The oxygen partial pressure (PO2) dependence of the electronic and hole conductivity is esti…
Kinetic studies of Se75Te25–xSnx (x = 2, 4, 6, and 10) chalcogenide glasses are made using differential scanning calorimetry (DSC). Glasses heated with different heating rates in DSC show the glass transition and crystallization region for all the concentration of Sn. It is interesting to note that x = 4 and 6 in Se75…
Preparation of a Carbon Fiber-Nickel-Type Material and Investigation of the Electrocatalytic Activity for the Hydrogen Evolution Reaction , Daftsis, E., Pagalos, N., Jannakoudakis, A., Jannakoudakis, P., Theodoridou, E., Rashkov, R., Loukaytsheva, M., Atanassov, N.
The pyrolysis kinetics of styrene-butadiene rubber (SBR) was studied by the kinetic model which accounts for the thermal degradation of polymer at any time. The kinetic analysis was performed by a conventional nonisothermal thermogravimetric (TG) technique at several heating rates between 10 and 50 K/min in a nitrogen…
It is well known that rock is generally treated as a heterogeneous material and the heterogeneity of rock causes sizes distribution of fragmented rocks in blasting. This paper discusses experimental and numerical rock fragment size distribution. To evaluate fines in bench blasting, two test experiments were conducted…
The new ternary nitrides MYSi4N7 (M = Sr, Ba) have been investigated using first-principles techniques and experimental methods. The crystal structure data predicted are in good agreement with our measurements on prepared powder samples. Calculations also show that the electronic structure is strongly dependent on the…
The synthesis of p-tert-butylcalix[4]arene containing polymerizable groups at the lower rim is reported. A calixarene monomer with one methacryloyloxy group at the phenolic rim was copolymerized with methyl methacrylate, yielding linear polymers with pendant calixarene groups in the cone conformation. Chemical modific…
A general two-step procedure for the synthesis of metallotripyrrinates TrpyMOAc f with M = Co(II) , Cu(II) , Zn(II) and Pd(II) , and OAc f = trifluoroacetate, is described, starting from well-known monopyrrolic precursors and simple transition metal acetates. X-ray structural investigations were undertaken on four dif…
PURPOSE AND METHODS: Using two Japanese herbal medicines, Shakuyaku-kanzo-to (SK) and Toki-shakuyaku-san (TS), we have evaluated a novel strong antidysmenorrhea therapy. SK/TS cyclic therapy, in which the herbs are administered alternately within the menstrual cycle. RESULTS: All of the 17 dysmenorrhea patients includ…
In an effort to improve the reliability and versatility of spacecraft charging models designed to assist spacecraft designers in accommodating and mitigating the harmful effects of charging on spacecraft, the NASA Space Environments and Effects (SEE) Program has funded development of facilities at Utah State Universit…
Abstract CuCN was investigated by chemical analysis, IR spectroscopy and powder X-ray diffraction. A high-temperature phase of CuCN was identified and structurally characterized by Rietveld refinement. HT-CuCN is isotypic to AgCN (R3m (No. 166), Z = 3, a = 597.109(8), c = 484.33(5) pm, Cu (3a), C/N (6c), z = 0.3915(10…
The anti-tack action of polyvinylpyrrolidone (PVP) on hydroxypropylmethylcellulose (HPMC) solution was elucidated using a probe test method. The influence of PVP of varying molecular weights at various PVP concentrations and solution temperatures on the tackiness of HPMC solution was studied. The viscosity, surface te…