Virgil Percec、J. Heck、Dimitris Tomazos 等 4 位作者1993-01-01Journal of the Chemical Society Perkin Transactions 2
The monoesters of mono-(1a), di-(1b), tri-(1c) and tetra-(ld) ethylene glycol with 3,4,5-tris[p-(n-dodecan-1-yloxy)benzyloxy]benzole acid (1), the polymethacrylates derived from them (2) and the complexes of both 1 and 2 with LiCF3SO3 and NaCF3SO3 self-assemble into cylindrical supra-molecular architectures which exhi…
Liquid Crystal Research AdvancementsMolecular Sensors and Ion DetectionSupramolecular Chemistry and Complexes
A. Turnbull1993-01-01British Corrosion Journal
A critical evaluation of empirical and mechanistically based modelling of pit propagation kinetics has been made. Empirical models of pit growth kinetics based on the application of Faraday s law to measurement of the total current flowing to potentiostatically controlled specimens have the limitation that only averag…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsNon-Destructive Testing Techniques
Michael L. Wood、Peter Hardy1993-01-01Journal of Magnetic Resonance Imaging
Paramagnetic and superparamagnetic substances are used as contrast agents to enhance proton relaxation in magnetic resonance imaging. This review summarizes the physics of contrast agents, specifically the mechanisms by which contrast agents enhance T1 and T2 relaxation. The purpose is to provide a background for unde…
Advanced MRI Techniques and ApplicationsLanthanide and Transition Metal ComplexesElectron Spin Resonance Studies
I. Heertje1993-01-01Digital Commons - USU (Utah State University)
Microstructural studies play an important role in establishing the relation between composition, processing and final properties of many food products. In order to arrive at a full description of microstructure many visualization- and preparation techniques are needed. A number of fatty products such as shortenings, m…
Textile materials and evaluations
Aristippos Gennadios、Hag Jae Park、Curtis L. Weller1993-01-01Transactions of the ASAE
The effect of relative humidity and temperature on tensile strength of two types of protein-based [corn zein (CZ) and wheat gluten (WG)] and two types of cellulosic [methylcellulose (MC) and hydroxypropyl cellulose (HPC)] hydrophilic edible films was investigated. A central composite response surface design was used.…
Postharvest Quality and Shelf Life ManagementNanocomposite Films for Food PackagingPineapple and bromelain studies
Kenji Hanabusa、Junko Tange、Yoshikazu Taguchi 等 5 位作者1993-01-01Journal of the Chemical Society Chemical Communications
A long-chain alkylamide of N-benzyloxycarbonyl-L-valyl-L-valine 1 can cause physical gelation of a wide variety of organic liquids and harden them at very low concentrations; the fourier-transform infra-red (FTIR) spectra, and the thermodynamic parameters, suggest that the gel is built up through intermolecular hydrog…
Hydrogels: synthesis, properties, applicationsSupramolecular Self-Assembly in MaterialsFood Chemistry and Fat Analysis
Gerard R. Llanos、Michael V. Sefton1993-01-01Journal of Biomaterials Science Polymer Edition
Because of the 'bland' nature of polyethylene oxide towards proteins and cells, considerable effort has been devoted to preparing surfaces rich in polyethylene oxide, using block copolymers, surface immobilization or other methods. It is clear that these modifications result in reduced levels of cell (including platel…
Advanced Polymer Synthesis and CharacterizationElectrospun Nanofibers in Biomedical ApplicationsPolymer Surface Interaction Studies
John G. Skedros、Roy D. Bloebaum、Kent N. Bachus 等 4 位作者1993-01-01Journal of Biomedical Materials Research
Backscattered electron (BSE) imaging is considered to be a useful technique for determining relative differences in bone tissue density. However, it is not clear how graylevel variations seen in BSE images of bone tissue, which are primarily dependent on the tissue's average atomic number, correlate to tissue density…
Bone Tissue Engineering MaterialsHydrogen embrittlement and corrosion behaviors in metalsCalcium Carbonate Crystallization and Inhibition
G. Ramos N.、M.T. Campillo R.、K. Naito1993-01-01IEEE Transactions on Power Delivery
In the assessment of the conductive materials of the natural contaminants accumulated on insulators in terms of equivalent salt deposit density (ESDD), not much attention has been paid to the basic consideration, such as its solubility in water, correction of the conductivity of its water solution to the standard temp…
High voltage insulation and dielectric phenomenaElectrostatic Discharge in ElectronicsEnergy and Environmental Systems
Pieter de Waard、Hans van der Wal、G.N.M. Huijberts 等 4 位作者1993-01-01Journal of Biological Chemistry
Poly(3-hydroxyalkanoates) (PHAs) were isolated from Pseudomonas putida KT2442 cultivated on petroselenic acid, oleic acid, and linoleic acid to study beta-oxidation of unsaturated fatty acids. Both saturated and unsaturated medium chain length 3-hydroxy fatty acids were found to be constituents of these polymers. With…
biodegradable polymer synthesis and propertiesPolymer composites and self-healingCarbon dioxide utilization in catalysis
J. Mukerji1993-01-01Defence Science Journal
The present state of the knowledge of ceramic-matrix composites have been reviewed. The fracture toughness of present structural ceramics are not enough to permit design of high performance machines with ceramic parts. They also fail by catastrophic brittle fracture. It is generally believed that further improvement o…
Advanced ceramic materials synthesisAluminum Alloys Composites PropertiesMaterial Properties and Applications
Qinghong Ann、Jeanette Adams1993-01-01Analytical Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure-specific collision-induced fragmentations of ceramides cationized with alkali-metal ionsQinghong. Ann and Jeanette. AdamsCite this: Anal. Chem. 1993, 65, 1, 7–13Publication Date (Print):January 1, 1993Publication History Published online1 May 2002Published inissue…
Lipid Membrane Structure and BehaviorMolecular Sensors and Ion DetectionPorphyrin and Phthalocyanine Chemistry
Kou-Rueh Lai、T. Y. Tien1993-01-01Journal of the American Ceramic Society
The kinetics of anisotropic β‐Si 3 N 4 grain growth in silicon nitride ceramics were studied. Specimens were sintered at temperatures ranging from 1600° to 1900°C under 10 atm of nitrogen pressure for various lengths of time. The results demonstrate that the grain growth behavior of β‐Si 3 N 4 grains follows the empir…
Advanced ceramic materials synthesisMetal and Thin Film MechanicsAdvanced materials and composites
A. Henglein、M. Gutiérrez1993-01-01The Journal of Physical Chemistry
The oxidation of iodide by 1 MHz continuous ultrasound and the sonoluminescence in water created by pulsed ultrasound were investigated in the pressure range from 0.7 to 3 bar. At low intensities, the chemical yield and the luminescence intensity decrease with increasing pressure. At higher intensities the yields incr…
Advanced Chemical Sensor TechnologiesUltrasound and Cavitation PhenomenaOptical and Acousto-Optic Technologies
Mitsuo Yamauchi、Elton P. Katz1993-01-01Connective Tissue Research
Using cross-linking stereochemistry as indicators, the molecular environment of two collagens in the turkey leg Achilles tendon were compared. The tendon from one year old turkeys was dissected into nonmineralized, fully mineralized and transitionally mineralized portions. Amino acid composition and cyanogen bromide p…
Tendon Structure and TreatmentHormonal and reproductive studiesCollagen: Extraction and Characterization
Johann Desilvestro、Werner Scheifele1993-01-01Journal of Materials Chemistry
The kinetics of electrochemical aniline polymerization in aqueous acidic solutions have been investigated by chronocoulometry as a function of the electrolyte anion (i.e. HSO4–, Cl–, NO3–, ClO4–, CF3CO2–), concentration of aniline and para-phenylenediamine (PPDA) as an additive and also in terms of potential or curren…
Electrochemical sensors and biosensorsConducting polymers and applicationsAnalytical Chemistry and Sensors
Toshihiro Ando、Motohiko Ishii、Mutsukazu Kamo 等 4 位作者1993-01-01Journal of the Chemical Society Faraday Transactions
The chemisorbed species on diamond surfaces have been studied by Fourier-transform infrared (FTIR), temperature-programmed desorption (TPD) and laser Raman spectroscopy. Oxidized diamond powders were treated thermally in an H2 environment. IR spectral changes were followed during the hydrogenation of oxidized diamond…
High-pressure geophysics and materialsDiamond and Carbon-based Materials ResearchAdhesion, Friction, and Surface Interactions
Abdol Khezer Sobbi、Dieter Wöhrle、Derck Schlettwein1993-01-01Journal of the Chemical Society Perkin Transactions 2
The stabilities of various porphin analogue compounds such as unsubstituted and substituted phthalocyanines, tetraphenylporphyrin, naphthalocyanine and tetraazaporphyrin have been investigated. The compounds were dissolved either in organic solvents or water. Electronic spectra in the visible region were recorded afte…
Porphyrin and Phthalocyanine ChemistryPhotodynamic Therapy Research StudiesSurface Chemistry and Catalysis
M. Itano、Frederick W. Kern、M. Miyashita 等 4 位作者1993-01-01IEEE Transactions on Semiconductor Manufacturing
Particle removal from silicon wafer surfaces was studied using acid and alkaline solutions employed in wet cleaning processes found in semiconductor manufacturing. It was demonstrated that alkaline solutions are superior to acid solutions in terms of particle removal efficiency. The following particle removal mechanis…
Surface Modification and SuperhydrophobicityRecycling and Waste Management TechniquesAerosol Filtration and Electrostatic Precipitation
Reinhard Storbeck、Matthias Rehahn、Matthias Ballauff1993-01-01Die Makromolekulare Chemie
Abstract The synthesis of high‐molecular‐weight polyesters based on 1,4:3,6‐dianhydro‐ D ‐sorbitol (DAS), 1,4:3,6‐dianhydro‐ D ‐mannitol (DAM) and 1,4:3,6‐dianhydro‐ L ‐iditol (DAI) is reported. The polymers were obtained by polycondensation in solution of the dianhydrohexitols with terephthaloyl dichloride and 2,5‐di…
biodegradable polymer synthesis and propertiesSynthesis and properties of polymersSilicone and Siloxane Chemistry