Materials Literature
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Abstract We evaluated the relationship between the ionic substituents and nonisothermal crystallization behavior in poly(butylene succinate) (PBS) ionomers, synthesized by the introduction of sulfonated dimethyl fumarate (SDMF) with sodium sulfonate. In addition, we investigated the effect of sodium ions on the molecu…
We studied the interaction between an ${\mathrm{Ar}}^{7+}$ ion and a graphene sheet by combining real-time propagation of electron wave functions with molecular dynamics simulations. Our calculation supports the fluorescence from ${\mathrm{Ar}}^{7+}$ ions penetrating the carbon foil [S. Bashkin et al., Phys. Rev. A 25…
The importance of collagen, the major structural protein of animal kingdom, in maintaining the normal structure and function of the skin is well known. The same property is exploited widely in medical and industrial fields in finding agents, which could influence the synthesis of this protein. In this context in vitro…
Morphological evolution in dewetting thin film bilayers of polystyrene (PS) and a polyhedral oligomeric silsesquioxane (POSS), trisilanolphenyl-POSS (TPP), was studied as a function of annealing temperature and annealing time. The results demonstrate unique dewetting morphologies in PS/TPP bilayers at elevated tempera…
Cupric acetate dissolved in ethanol was applied for the first time for synthesizing highly compressed and regular coiled carbon nanotubes (CCNTs). This was done by spray pyrolysis of the ethanol solution intermittently supplied into the reaction zone at 850 °C. The grown CCNTs were in high purity and high yield and co…
A planar anode-supported electrolyte was fabricated using a tape casting method that involved a single step cofiring process. A standard NiO∕8YSZ cermet anode, 8mol% YSZ electrolyte, and a lanthanum strontium manganite cathode were used for the solid oxide fuel cell unit cell. A pressurized cofiring technique allows t…
The influence of 0–16 mol% Sb 2 O 3 substitution for P 2 O 5 on the properties of ZnO–P 2 O 5 glasses has been investigated. It was shown that Sb 2 O 3 could participate in the glass network and thermal stability of the glasses decreased with increasing Sb 2 O 3 content. Glass transition temperature T g , softening te…
PURPOSE: To report 6 eyes of 5 patients with transient corneal edema after exposure to the milky latex of Calotropis procera (ushaar). METHODS: Interventional case series. RESULTS: Intracorneal penetration of ushaar latex can lead to permanent endothelial cell loss with morphologic alteration. Corneal edema resolved c…
Two-dimensional single-crystal synchrotron x-ray diffraction of the high-temperature plastic phase of $\mathrm{C}{\mathrm{Br}}_{4}$ reveals relatively sharp $\mathbf{G}\ifmmode\pm\else\textpm\fi{}\frac{1}{2}$ ${{110}}^{*}$ sheets of diffuse intensity (where $\mathbf{G}$ represents the set of average structure $Fm\text…
BACKGROUND/PURPOSE: High molecular weight polymers such as proteins and polysaccharides have been commonly employed in cosmetic practice to induce skin tightness. The effect is perceived by users as an increase in skin tightness (firmness) accompanied by skin smoothing and elimination of wrinkles and lines. The aim of…
Auf freien Fuß gesetzt: Retinsäure (RA), ein entscheidender molekularer Signalgeber für der Embryogenese von Vertebraten, kann photochemisch aus einem einfachen Derivat (cRA) freigesetzt werden. Nach Ein- und Zweiphotonanregung von cRA in Zebrafischembryos entstehen RA-induzierte Phänotypen (siehe Bild). Auf diesem We…
A set of novel silicate glasses containing ZnO and co-doped with${\hbox {Er}}^{3+}$and${\hbox {Yb}}^{3+}$was designed as substrates for optical waveguide amplifiers. Characterized by exceptionally low up-conversion, minimum Er concentration quenching and high mechanical as well as chemical stability, the reported glas…
Phase separation in thin film blends of poly(tert-butyl acrylate) (PtBA) and a polyhedral oligomeric silsesquioxane (POSS), trisilanolphenyl-POSS (TPP), is studied as functions of annealing temperature and time, using reflected light optical microscopy, atomic force microscopy, and X-ray photoelectron spectroscopy. Th…
By simply refluxing a commercial AlN powder in a mixture solution of ethanol, H(3)PO(4), and Al(H(2)PO(4))(3) for 24 h at 80 degrees C, the powder was successfully passivated against hydrolysis. The phosphate layer formed on the surface of AlN powder was found to be quite stable toward protecting the powder from hydro…
The formation and subsequent transformations of mesostructured silica within the confined tubular environment of anodic alumina membrane (AAM) channels [porous alumina membrane (PAM) channels] were investigated for the first time in situ with grazing incidence small-angle X-ray scattering (GISAXS) techniques, in combi…
We have investigated the effect of structural disorder on the temperature dependence of the resistivity $\ensuremath{\rho}(T)$ of epitaxial $\mathrm{Sr}\mathrm{Ru}{\mathrm{O}}_{3}$ films. Distinctive effects of disorder are seen at low and high temperatures. For temperatures well below the ferromagnetic transition and…
We have recently reported that CoASH is the major low-molecular weight thiol in Bacillus anthracis [Nicely, N. I. , Parsonage, D., Paige, C., Newton, G. L., Fahey, R. C., Leonardi, R., Jackowski, S., Mallett, T. C., and Claiborne, A. (2007) Biochemistry 46, 3234-3245], and we have now characterized the kinetic and red…
The steady-state optical and charge transport properties of the anionic polythiophene, poly[3-(potassium-4-butanoate)thiophene-2,5-diyl], are reported. The degree of interchain aggregation in solution and in the film state can be controlled by solution processing conditions and the introduction of bulky organic counte…
Alanates and boranates are intensively studied because of their potential use as hydrogen storage materials. In this paper, we present a first-principles study of the electronic structure and the energetics of beryllium boranate $[\text{Be}{({\text{BH}}_{4})}_{2}]$. From total energy calculations, we show that---in co…
Abstract The effect of the same amount of precipitated silica nanofiller on the curing and mechanical properties of natural rubber and synthetic polyisoprene was investigated. The silica surfaces were pretreated with bis(3‐triethoxysilylpropyl) tetrasulfide (TESPT) to chemically bond silica to rubber. The rubbers were…