Materials Literature
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Abstract LaS 1.9 , CeS 1.9 , PrS 1.9 , NdS 1.9 , and GdS 1.9 : Five new Lanthanide Polysulfides – Syntheses, Crystal Structures and their Structural Relationship to the ZrSSi Type Crystals of the five new lanthanide polysulfides LaS 1.9 , CeS 1.9 , PrS 1.9 , NdS 1.9 , and GdS 1.9 have been prepared by different synthe…
The nonlinear optical coefficients of LiB3O5 (LBO), CsB3O5 (CBO), and CsLiB6O10 (CLBO) crystals have been measured by both the Maker fringe technique and the phase-matching method. With the former technique the coefficients of LBO, CBO, and CLBO crystals have been determined relative to d36 (KDP) at the wavelength 106…
Abstract N,N ‐Di(2‐hydroxyethyl)‐ N ‐dodecyl‐ N ‐methyl ammonium chloride was used as an intercalation agent to treat Na + ‐montmorillonite and form a novel type of organic montmorillonite (OMMT). An OMMT master batch (OMMT‐MB) was prepared by solution intercalation and was used in the preparation of high‐temperature‐…
Abstract The λ 6 Si ‐silicate [K(18‐crown‐6)] 2 [Si(NCO) 6 ] ( 10 ) was synthesized by treatment of Si(NCO) 4 with KNCO in the presence of 18‐crown‐6. Compound 10 ( Si N 6 skeleton) is the first example of a hexa(cyanato‐ N )silicate. It was characterized by solid‐state and solution NMR spectroscopy, and the acetonitr…
Abstract The present paper describes the morphology, taxonomy, and distribution of species belonging to the diatom genera Rhizosolenia s. str., Neocalyptrella, Pseudosolenia and Proboscia, found in the marine coastal waters of Buenos Aires Province, Argentina. The phytoplankton samples were collected from October 1994…
Abstract RbMnO 2 was prepared via the azide/nitrate route. Stoichiometric mixtures of the precursers (Mn 2 O 3 , RbN 3 and RbNO 3 ) were heated in a special regime up to 600 °C and annealed at this temperature for 30 h in specially designed silver crucibles. Single crystals have been grown by annealing a 1:1 mixture o…
This work reports a Fresnel zone plate in a circularly symmetric hybrid-aligned liquid crystal (LC) film with a photoconductive polymer layer. An ultraviolet-induced electrodelike pattern of polymer layer under a zone plate photomask results in alternating major and minor portions of external voltage dropping on LC la…
The pathogenic bacteria Bordetella parapertussis and Bordetella bronchiseptica express a lipopolysaccharide O antigen containing a polymer of 2,3-diacetamido-2,3-dideoxy-l-galacturonic acid. The O-antigen cluster contains three neighbouring genes that encode proteins belonging to the short-chain dehydrogenase/reductas…
Abstract Nanocomposites based on a commercial epoxy resin and organically modified montmorillonites (OMMTs), containing 5 and 10 phr OMMT, were prepared and characterized. Poly(oxypropylene) diamine (Jeffamine D400) and octadecylamine were used as organic modifiers. Another poly(oxypropylene) diamine (Jeffamine D230)…
5-Membered heterocycles are employed to give a conformer independent DDA array of hydrogen bonds, resulting in enhanced binding affinity to a complementary AAD array in comparison to a DDA array employing a 6-membered ring.
<div class="htmlview paragraph">Newly designed laboratory measurement system, which reproduces particle number size distributions of both nuclei and accumulation mode particles in exhaust emissions, was developed. It enables continuous measurement of nano particle emissions in the size range between 5 and 1000 n…
Abstract Two new thioantimonates [M(dap) 3 ]Sb 4 S 7 (M = Ni 2+ ( 1 ) and Co 2+ ( 2 )) were synthesized under solvothermal conditions by the reaction of NiS (or Co metal), Sb and S in an aqueous solution of 1,2‐diaminopropane (dap). Compounds 1 and 2 are isostructural. The polymeric [Sb 4 S 7 2− ] n anion is composed…
Pb ( Zr 0.52 Ti 0.48 ) O 3 films were deposited by rf magnetron sputtering on silicon-doped GaN(0001)∕c-sapphire with a PbTiO3∕PbO oxide bridge layer grown by molecular beam epitaxy. X-ray diffraction data showed the highly (111)-oriented perovskite phase in lead zirconate titanate (PZT) films with PbTiO3∕PbO bridge l…
Design of blood-compatible surfaces is required to minimize platelet-surface interactions and increase the thromboresistance of foreign surfaces. Poly(lactic-co-glycolic-acid)-carbon nanotube (PLGA-CNT) composite is studied as a building material to fabricate artificial blood prostheses. This nanocomposite-based bioma…
Polycrystalline diamond detectors with energy resolving capability of the impinging beam were realized and tested by using a miniature pyroelectric x-ray pulse generator. Microstrip structures were defined by photolithography aimed to reduce parasitic capacitances and to perform characterization measurements in a sand…
Photoaligned polyimide films with different film thicknesses were prepared on quartz substrates, and uniaxially aligned glassy poly(9,9-dioctylfluorenyl-2,7-diyl) (PFO) layers were formed on top. The photoluminescence polarization ratio of the PFO layer rapidly increased with increasing polyimide film thickness, and b…
Abstract A series of polyamides based on Z‐ octadec‐9‐enedioic acid, a bio‐based unsaturated monomer, and aliphatic‐, cycloaliphatic‐, or benzylic diamines were synthesized and characterized by 1 H and 13 C NMR analysis, size exclusion chromatography (SEC), DSC, and dynamic‐mechanical analysis (DMA). The high reaction…
Abstract The new charge neutral complex [Cr(tren)SbS 3 ]·H 2 O was synthesized under solvothermal conditions applying CrCl 3 ·6H 2 O, Sb 2 S 3 , and S as starting material in an aqueous tren solution (tren = tris(2‐aminoethyl)amine)). The compound crystallizes in the non‐centrosymmetric space group P2 1 2 1 2 1 with a…
[ ( K ( 1 − x ) ∕ 2 Na ( 1 − x ) ∕ 2 Li x ) 1 − 3 y Bi y ] Nb O 3 (abbreviated as KNLBN) ceramics were prepared by conventional solid-state sintering. The addition of Li+ and Bi3+ makes the orthorhombic-tetragonal phase transition temperature (TO-T) decrease from 200°C for pure (K0.5Na0.5)NbO3 ceramics to −10°C for KN…
We have previously created scaffolds composed of a biodegradable elastomer, poly(glycerol sebacate) (PGS), which are tubular, seamless, and highly porous. Here we describe two scaffold fabrication methods developed subsequently and compare the advantages of these methods to the original by examining overall yields and…