Materials Literature
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The eutectic phase in a 1.72 mass pct calcium added AM50 die-cast alloy homogenized at 673 K has been investigated by X-ray diffraction (XRD) and energy dispersive spectrometry (EDS). The XRD and EDS experiments indicate that the eutectic phase consists of a Al2Ca phase with the C15 structure and contains 10.76 atomic…
Conducting polymers are considered to suffer metal–insulator transitions during reduction. After a deep electrochemical reduction, freestanding films of polypyrrole retain a conductivity as high as 0.05 S cm−1. Used as cathodes, they allow the flow of high cathodic currents from aqueous solutions, the hydrogen release…
The thermoelectric properties of lanthanum-doped polycrystalline perovskite-type europium titanate were measured from room temperature to 900 K and compared to those of MTiO3 (M=Ca, Sr, Ba). The differences in the titanates were calculated in terms of the differences of A-site ion and Ti–O distance that determined the…
Novel UV and blue phosphors, Y P O 4 : Zr and Y P O 4 : Zr , Mn , respectively, are synthesized and investigated. Y P O 4 : Zr shows the emission about 290 nm assigned to the charge transfer transition of O-Zr. The excitation spectrum of the emission has main band peaked at 175 nm . The codoped phosphor Y P O 4 : Zr ,…
Pressure-sensitive adhesives (PSA) present an interesting class of products that offers a potential to produce a novel generation of self-adhesives with a great number at excellent properties. The term pres-sure-sensitive describes adhesives that are aggressively and permanently tacky in the dry form at room temperatu…
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The long-time existence of solutions for the Mullins--Sekerka problem in a new weak formulation is proved. Using a variational approach introduced by Luckhaus and Sturzenhecker [Calc. Var. Partial Differential Equations, 3 (1995), pp. 253--271], time-discrete solutions are constructed, satisfying approximate Gibbs--Th…
10.2 Overview of Industries Involved in Bioprospecting . . . . . . . . . . . . . . 274 10.2.1 Pharmaceutical Bioprospecting 10.2.2 Ethnobotanical Bioprospecting 10.2.3 The Botanical Medicine Industry 10.2.4 The Personal Care and Cosmetics Industries 10.2.5 Biological Control and Crop Protection 10.2.6 Biomimetics 10.2…
The feeding mechanisms of two species in the tanaidacean family Kalliapseudidae, Kalliapseudes macsweenyi Drumm and Psammokalliapseudes granulosus Brum, are elucidated by comparing gut contents, mouthpart movements, and feeding behavior. Kalliapseudes macsweenyi filter-feeds and possesses plumose setae on the cheliped…
The preparation of inorganic–organic polymer nanocomposites is an extensively investigated area in materials chemistry. For developing new functions and applications, the preparation of new types of nanocomposite is considered important. In the present study, we prepared a higher-ordered nanocomposite composed of a ro…
A spherical model for the bubble created by an underwater explosion is enhanced to account, in approximate fashion, for the effect of bubble distortion on translation and dilation. The enhancement consists of introducing artificial drag in the form C | v | P , where ν is translation velocity, and C , P produce an opti…
The latex of the wild growing plant Calotropis procera produces inflammation of the skin and mucous membranes upon accidental exposure. On local administration it elicits an intense inflammatory response due to the release of histamine and prostaglandins that is associated with hyperalgesia. In the present study we ha…
Atomic and electronic structure of regular and O-deficient SrTiO3 have been studied. Several types of first principles atomistic simulations: Hartree-Fock method, Density Functional Theory, and hybrid HF-DFT functionals, have been applied to periodic models that consider supercells of different sizes (ranging between…
An efficient method for the synthesis of (+)-buergerinin F is established via the enantioselective aldol reaction of a tetra-substituted ketene silyl acetal with crotonaldehyde, followed by intramolecular Wacker-type ketalization.
Dielectric relaxation time of pure bulk water has been determined from the dielectric loss tangent scans against temperature at two frequencies. After calculating the frequency-independent background loss, the relaxation loss was obtained, and the relaxation time determined. The dielectric relaxation time of water is…
Through the study of the vapor‐water‐solid interface, the water‐repellent capacity of a paraffin wax‐covered wood substrate has been related to the structure of the hydrocarbons of which it is composed, using the axisymmetric drop shape analysis (ADSA) and gas chromatography (CG) techniques. Two effects were found rel…
Direct electrodeposition of ultrathin polymer electrolytes provides a facile route to incorporate ion-conducting functionality and electronic passivation at nanostructured, electrified interfaces. Conformal solid polymer electrolytes are generated directly at planar, rough oxide electrodes by electro-oxidation of 4-hy…
Computer-Aided Design and Applications is an international journal on the applications of CAD and CAM. It publishes papers in the general domain of CAD plus in emerging fields like bio-CAD, nano-CAD, soft-CAD, garment-CAD, PLM, PDM, CAD data mining, CAD and the internet, CAD education, genetic algorithms and CAD engin…
Highly crystallized GeO2 nanosheets were synthesized by hydrolysis and condensation reactions of germanium alkoxide using a 2-dimensional flat thin lamellar phase water layer containing surfactant molecules at the liquid-liquid interface as a confined reaction field.
Preface. Catalytic Activity and Kinetics of Liquid-Solid-Liquid Phase-Transfer Catalysts Aerogels in Catalysis Heterogeneous Catalysis on Basic sites in Organic Synthesis Organic Transformations Through Supported Guanidines Selective Catalytic reduction of NOx with Organic Compounds over Ag/A12O3 Catalyst Behaviour of…