Materials Literature
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Polyfuran films doped with perchlorate anions (PFu/ClO 4 ) were studied by scanning and transmission electron microscopies and electron diffraction in order to analyze their morphology and microstructure. Film generation was carried out electrochemically at constant potential, E d = 2.6 V (Ag/Ag + ), onto platinum ele…
The heat storage rate of a single pellet of magnesium nickel hydride was experimentally and theoretically studied for recovering waste heat from a industrial plant. The Mg–Ni hydride fine powder as a raw material was coated by copper thin film to obtain enough strength against hydrogen absorption/desorption cycles. Th…
The evolution of a RuO2–TiO2 film electrode has been studied as a function of temperature by secondary ion mass spectrometry (SIMS). The coating mixture prepared on a titanium support from an isopropyl alcohol solution of hydrated ruthenium chloride and titanium diisopropoxide bispentane-2,4-dionate precursors was hea…
Conducting polymers are materials of recent origin. They are obtained by polymerisation of simple organic monomers and doping with electron acceptor or donor species and show conductivity ranging from that of a semiconductor to that of metal. These materials are now available with unique electronic and optical propert…
Tartaric acid, malic acid, and glyceric acid were copolycondensed with glycolic acid at various molar ratios in feed to quickly synthesize biodegradable oligoesters. They were likely to have a moderately cross-linked structure with relatively low molecular weights and hydrophilic groups on the chains. In addition to m…
50 phr each of three hydrocarbon resins of different aliphatic-aromatic nature was added to a solvent based polychloroprene adhesive. The hydrocarbon resins were characterized using infra-red (IR) spectroscopy and differential scanning calorimetry (DSC) measurements. The properties and compatibility of the polychlorop…
The photodecomposition of Fe(CO) 5 adsorbed on the Au(111) surface at ∼90 K has been studied using IR reflection absorption spectroscopy (IRAS), thermal desorption spectroscopy (TDS), and X-ray photoelectron spectroscopy (XPS). IRAS and TDS show that Fe(CO) 5 is molecularly adsorbed on the surface and desorbed complet…
An electron spectroscopy for Chemical Analysis (ESCA) characterization of films based on collagen-poly(vinylalcohol) blends, cross-linked by dehydrothermal treatment is reported. The semiquantitative analysis indicates a remarkable enrichment of collagen in the surface with respect to its initial percentage utilized t…
The sorption and reduction of NO 2 have been studied on ammonium 12-tungstophosphate, a microporous derivative of 12-tungstophosphoric acid. NO 2 penetrates into the bulk structure, where reduction by NH 4 + occurs. Nitrogen, oxygen, and nitrous oxide are produced. Nitrogen is desorbed into the gas phase while oxygen…
The object of this paper is to briefly describe various methods of measuring yarn spacing and focus attention on some results of the research designed to study the ‘Prevention of Start-up Marks in Fabrics Woven on Power Looms’.
Investigations of corrosion of different crucible materials (Al2O3, SiO2, Pt) due to attacks by metaphosphate melts Me(PO3)2 with Me=Mg, Ca, Zn and NaPO3 show a dependence on the chemical composition of crucible material and glass as well as the melting temperature and -time.
The synthesis of new hybrid polyphosphazene−siloxane polymers is described. These polymers contain a polyphosphazene backbone and [( N -methylamino)propyl]siloxane side groups, −N(Me)(CH 2 ) 3 SiMe 2 OSiMe 3 or −N(Me)(CH 2 ) 3 SiMe 2 OSiMe 2 OSiMe 3, in ratios of 1:1 and 1:3 with trifluoroethoxy, 2-(2-methoxyethoxy)et…
A three-step synthesis of perfluorinated bisnoradamantane, F -tricyclo[3.3.0.0 3,7 ]octane, the smallest unsubstituted perfluorinated cage compound yet reported in the literature, is described. Oleum oxidation of adamantane to adamantane-2,6-dione followed by aerosol fluorination to F -adamantane-2,6-dione which is th…
Nonequilibrium grain boundary segregation of alloying elements in an Fe–5Mn–9Ni–5Mo alloy and its effect on the mechanical properties have been investigated through AES and tensile test. The alloy showed a ductile-brittle-ductile transition during isothermal aging at 430 or 450°C, and intergranular fracture was shown…
"This book highlights the latest experimental and theoretical developments in the field of femtochemistry, with papers describing the physics and chemistry of ultrafast processes in small molecules, complex molecular systems, clusters, biological systems, solids, matrices, liquids and at surfaces and interfaces. The r…
Effects of Ni and Si on delayed fracture properties of high strength steels with 1420MPa grade were investigated. 0.25% to 3.5% of Ni or 0.25% to 1.7% of Si was added respectively to 0.3%C-boron-containing steel. Delayed fracture test and measurement of diffusible hydrogen were carried out using bar steels for prestre…
Germband retraction in Drosophila melanogaster, like most embryonic morphogenetic events in this organism and in higher eukaryotes, is not well understood. We have taken several approaches to study the relationships between previously identified mutations (u-shaped, serpent, hindsight and tailup) that selectively caus…
Silicon nitride with anisotropic microstructure was fabricated by tape-casting of raw powder slurries with 0-10vol% seed particles of morphologically regulated β-Si3N4 single crystal, followed by gas pressure sintering of stacked sheets. The effect of orientation degree and area fraction of large elongated grains on m…
Two hydrocyclic compounds namely Qj-1 and Qj-2 have been synthesized in the laboratory from indigeneous chemicals and their corrosion inhibiting action has been evaluated by weightloss method electrochemical technique in 15% hydrochloric acid under boiling condition. The performance of synthesized compounds were compa…
A Fourier-integral-based model for the computation of magnetic field distributions due to an arbitrary excitation loop above a conducting half-space is formulated. Evaluation of the Fourier transform of the excitation current components, as usually required in the conventional approaches, is not needed in this model.…