Materials Literature
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Fine particles of cobalt and cobalt carbide nesting in multilayered graphitic sheets, which were synthesized by an electric arc discharge of carbon rods containing cobalt oxide (CoO), were studied by transmission electron microscopy, including microdiffraction and energy dispersive x-ray analysis. The size of the wrap…
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Abstract The oxidation of the leucoemeraldine (LM) and emeraldine (EM) states of polyaniline (PAN) and the subsequent reprotonation and reduction of the nigraniline (NA) and pernigraniline (PNA) in acid gold solution were utilized for the spontaneous and sustained reduction of gold. The rate of Au reduction is strongl…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrochromic and Photoelectrochromic Behavior of Thin WO3 Films Prepared from Quantum Size Collodal ParticlesSurat Hotchandani, Idriss Bedja, Richard Fessenden, and Prashant KamatCite this: Langmuir 1994, 10, 1, 17–22Publication Date (Print):January 1, 1994Publication Hist…
A new manganese(II) compound [Mn2(bipy)4(ta)][ClO4]21(bipy = 2,2′-bipyridme, ta = terephthalate dianion) has been synthesised and its crystal structure determined by single-crystal X-ray diffraction. It crystallizes in the triclinic system, space group P, with a= 9.516(2), b= 11.613(3), c= 11.615(3)Å, α= 70.92(2), β=…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEvolution of order in thin block copolymer filmsA. M. Mayes, T. P. Russell, P. Bassereau, S. M. Baker, and G. S. SmithCite this: Macromolecules 1994, 27, 3, 749–755Publication Date (Print):January 1, 1994Publication History Published online1 May 2002Published inissue 1 Janua…
Abstract We investigated the effect of poly(ethylene‐co‐vinyl alcohol) (EVOH) concentration on the processability and physical properties of thermoplastic starch plasticized with glycerine and water. Waxy maize starch (Amioca), native corn starch (Melogel), and a treated high amylose corn starch (Hylon VII) were emplo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMiscibility and morphology of blends of isotactic and atactic poly(3-hydroxybutyrate)Hideki Abe, Yoshiharu Doi, Michael M. Satkowski, and Isao NodaCite this: Macromolecules 1994, 27, 1, 50–54Publication Date (Print):January 1, 1994Publication History Published online1 May 20…
Hot pressing kinetics of α‐Si 3 N 4 , AIN, Al 2 O 3 , and Y 2 O 3 powder mixtures forming α′‐ and β′‐SiAlONs have been studied. Densification proceeds in two steps, first by a small shrinkage upon ternary eutectic oxide melting (SiO 2 –Al 2 O 3 –Y 2 O 3 ) at 1340°C, followed by a massive particle rearrangement and fur…
A monoclonal antibody (mAb 4D9) was used to analyze engrailed expression in amphipod embryos. As in other arthropods, engrailed is expressed in iterated transverse stripes in the germ band. In the anterior region these stripes are generated without a recognizable division pattern, and their appearance and formation sh…
We present the results from a recent study of the structure and energies of the low-index surfaces of spinel (MgAl2O4) using atomistic simulation techniques. These illustrate the complexity of modelling the surfaces of ternary oxides, particularly since cation ordering, resulting in the formation of inverse spinel, pl…
Abstract The dynamic affinity adsorption oflysozyme through stacked flat‐sheet cellulose membranes with immobilized cibacron blue 3GA was studied and compared to three affinity‐membrane models: diffusion model to explore the importance of axial and radial diffusion; variation model to study the effects of pore‐size di…
Cyclic dipeptides consisting of diverse amino acids can cause physical gelation in a wide variety of organic fluids, including edible oils, glyceryl esters, alcohols and aromatic molecules; the gelation phenomenon is characterized by minimum gel concentration, FTIR spectroscopy, transmission electron microscopy, and X…
The resistance to pitting of an Fe‐17%Cr alloy in neutral chloride solution was studied, as a function of chloride concentration and of polarization time (aging), using combined electrochemical measurements and XPS analyses. Potentiodynamic experiments (at 1 V/h) show that pitting occurs at chloride concentrations abo…
We propose a new type of liquid substrate, perfluorinated oil (F-oil), for the formation of two-dimensional arrays from colloidal particles. The appropriate conditions for particle ordering (experimental cell, type and concentration of surfactants, etc.) are reported. Large and well ordered structures from µm-sized la…
Observations of intact reconstituted and native collagen fibres were performed with the atomic force microscope. The results are compared between the two types of fibres and with those obtained previously with the electron microscope on freeze-etched or negative stained samples. Some of the findings presented here ind…
Part 1 Tables for plane groups and space groups: symbols and terms used in this volume, Th. Hahn guide to the use of the space-group tables, Th. Hahn and A. Vos space-group determination and diffraction symbols, A. Vos and M.J. Buerger synoptic tables of space-group symbols group-subgroup relations, E.F. Betaut transf…
O.B. Ptitsyn; Kinetic and equilibrium intermediates in protein folding, Protein Engineering, Design and Selection, Volume 7, Issue 5, 1 May 1994, Pages 593–596,
The critical behavior of charge-density waves (CDWs) in the pinned phase is studied for applied fields increasing toward the threshold field, using recently developed renormalization-group techniques and simulations of automaton models. Despite the existence of many metastable states in the pinned state of the CDW, th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHole transport in 1-phenyl-3-((diethylamino)styryl)-5-(p-(diethylamino)phenyl)pyrazoline-doped polymersP. M. Borsenberger and L. B. ScheinCite this: J. Phys. Chem. 1994, 98, 1, 233–239Publication Date (Print):January 1, 1994Publication History Published online1 May 2002Publi…