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E-MSD: the European Bioinformatics Institute Macromolecular Structure Database

Harry Boutselakis2003-01-01Nucleic Acids Research

The E-MSD macromolecular structure relational database (http://www.ebi.ac.uk/msd) is designed to be a single access point for protein and nucleic acid structures and related information. The database is derived from Protein Data Bank (PDB) entries. Relational database technologies are used in a comprehensive cleaning…

Protein Structure and DynamicsMicrobial Metabolic Engineering and BioproductionEnzyme Structure and Function

MMDB: Entrez's 3D-structure database

J. Chen2003-01-01Nucleic Acids Research

Three-dimensional structures are now known within most protein families and it is likely, when searching a sequence database, that one will identify a homolog of known structure. The goal of Entrez's 3D-structure database is to make structure information and the functional annotation it can provide easily accessible t…

Protein Structure and DynamicsMicrobial Metabolic Engineering and BioproductionEnzyme Structure and Function

Effect of Hydrostatic Pressure on the Phase Transitions in [N(C 2 H 5 ) 4 ] 2 CuCl 4

K. Gesi2003-01-01Ferroelectrics

The phase transitions in tetraethylammonium tetrachlorocuprate, [N(C 2 H 5 } 4 ] 2 CuCl 4, have been investigated by dielectric measurements. At normal pressure the I-II transition at 259 K is of the first order. On the other hand, at the II-III transition (at 199 K) the dielectric constant shows a diffuse step-like a…

Nonlinear Optical Materials ResearchOrganic and Molecular Conductors ResearchSolid-state spectroscopy and crystallography

Geometrical isomerism in octahedral complexes arising from the presence of a fused ring on a triaza macrocycle

Peter Comba、Geoffry N. DeIuliis、Geoffrey A. Lawrance 等 8 位作者2003-01-01Dalton Transactions

The chiral 2,5,8-triazabicyclo[7.4.01,9]tridecane (L1), an analogue of 1,4,7-triazacyclononane, (L2) that has a trans-cyclohexane ring fused to the tacn framework, forms bis complexes with a wide range of metal ions where two geometric forms may exist depending on the relative locations of the substituent cyclohexane…

Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes

Encapsulation of quaternary 1D pentlandite-type alloy crystals within conical multi-layer carbon nanotubes

Pedro M. F. J. Costa、Jeremy Sloan、J. L. Hutchison 等 4 位作者2003-01-01Chemical Communications

Ordered 1D crystals of a complex pentlandite-type alloy with the general composition (Fe,Ni,Co)9S8 have been synthesised inside conical Multi Walled Carbon Nanotubes (MWNTs); the crystals are observed as a by-product of an arc-evaporation synthesis of Double Walled Carbon Nanotubes (DWNTs).

Carbon Nanotubes in CompositesGraphene research and applicationsDiamond and Carbon-based Materials Research

X-Ray photoelectron study of actinide (Th, U, Pu, Am) nitrates

Yury A. Teterin、A. Yu. Teterin、N. Yakovlev 等 8 位作者2003-01-01Nuclear Technology and Radiation Protection

In this work an X-ray photoelectron spectroscopy study of nitrates Th(NO3)4.4H2O UO2(NO3)2-nH2O, Pu(NO3)4-nH2O, and Am(NO3)2.nH2O was done in the binding energy range from 0 to 1000 eV in order to draw a correlation of the fine spectral structure parameters with the actinide ions oxidation states close environment str…

Radioactive element chemistry and processingNuclear Materials and PropertiesElectron and X-Ray Spectroscopy Techniques

MOLECULAR SIMULATION OF POLYPHOSPHAZENES AS GAS SEPARATION AND DIRECT METHANOL FUEL CELL MEMBRANES

Naiping Hu2003-01-01OhioLink ETD Center (Ohio Library and Information Network)

Molecular simulation studies of two polyphosphazene polymers including poly[bis(2,2,2-trifluoroethoxy)phosphazene] (PTFEP) and poly [bis(3methylphenoxy)phosphazene] (PBMP) are presented in this dissertation.Self-diffusion and sorption of seven gases (He, H 2 , O 2 , N 2 , CH 4 , CO 2 , and Xe) in PTFEP have been inves…

Dendrimers and Hyperbranched PolymersSilicone and Siloxane ChemistryMaterial Properties and Applications

Preparation and Mechanical Properties of Alumina-Zirconia Composites with Agglomerated Structures Using Pre-Sintered Powder

Kensuke Kageyama、Youhei Harada、Hiroshi Kato2003-01-01MATERIALS TRANSACTIONS

It is known that thermal residual stress in particulate ceramics results from the mismatch of thermal expansion coefficients of particulates and matrix and contributes to toughening of ceramic composites. In this study, alumina-zirconia composites with agglomerated structures were prepared using alumina or alumina-zir…

Advanced ceramic materials synthesisHigh-Velocity Impact and Material BehaviorAdvanced materials and composites

The Effect of Extrusion Processing Conditions on the Properties of Blown and Cast Polyolefin Packaging Films

Mark Billham、A.H. Clarke、Graham E. Garrett 等 5 位作者2003-01-01Developments in Chemical Engineering and Mineral Processing

Abstract Thin mono‐layer films of metallocene catalysed polyethylene, linear low density and conventional low density polyethylene, as well as polypropylene, were produced from a 38mm extruder through a 75mm diameter blown film die and a 600mm cast film die. By using the same die gap on each die to achieve equal draw‐…

Polymer crystallization and propertiesNatural Fiber Reinforced CompositesMaterial Properties and Processing

High Temperature <I>In-situ</I> Observations of Magnetic Domains in Fe-Co Alloys

Koichi Kawahara、Daisuke Iemura、Sadahiro Tsurekawa 等 4 位作者2003-01-01MATERIALS TRANSACTIONS

In-situ observations of magnetic domain structure in Fe-Co alloys with Co concentrations of 4.6∼50 at% were made by the optical Kerr microscopy in the temperature range from R.T. to the Curie temperature (1103 K ∼ 1253 K). The magnetic domain structures could be successively observed up to the Curie temperature (1103…

Magnetic properties of thin filmsMetallic Glasses and Amorphous AlloysMagnetic Properties and Applications

The synthesis and characterisation of amphiphilic α,α-linked sexithiophenes with substituents at the terminal α-positions

Oliver Henze、David Parker、W. James Feast2003-01-01Journal of Materials Chemistry

A series of polydisperse amphiphilic α,α-linked sexithiophenes with an oligoethylene oxide substituent at one terminal α-position and a hydrogen atom or a hexyl group at the other have been synthesised via Stille and Suzuki cross coupling reactions. The products have been characterised by a combination of 1H and 13C N…

Organic Electronics and PhotovoltaicsConducting polymers and applicationsSynthetic Organic Chemistry Methods

Electroanalytical features of non-uniformly doped conducting poly-3-(3,4,5-trifluorophenyl)thiophene films

Mikhael D. Levi、Y. Gofer、M. Cherkinsky 等 6 位作者2003-01-01Physical Chemistry Chemical Physics

Specially prepared, thin poly-3-(3,4,5-trifluorophenyl)thiophene, PTFPT, films were shown to possess stable p- and, most importantly, n-doping in TEABF4/sulfolane (SF) solutions. Electrodes comprising PTFPT films were studied by cyclic voltammetry (CV), potentiostatic intermittent titration (PITT), and electrochemical…

Organic Electronics and PhotovoltaicsConducting polymers and applicationsElectrochemical Analysis and Applications

Complete Sequence of the 10.3 kb Silkworm Attacus ricini rDNA Repeat, Determination of the Transcriptional Initiation Site and Functional Analysis of the Intergenic Spacer

Suiquan Wang、Mujun Zhao、Tsaiping Li2003-01-01DNA sequence

A complete sequence of the 10.3 kb silkworm rDNA repeat in Attacus ricini (also called as Samia cynthia ricini) was first determined here, and sequences coding for 18S, 5.8S and 28S were also mapped to rDNA unit. The precise transcription initiation site was determined by primer extension experiment. Intergenic spacer…

Insect Resistance and GeneticsViral Infectious Diseases and Gene Expression in InsectsSilk-based biomaterials and applications

Vibrational Spectroscopic Study on the Molecular Deformation Mechanism of a Poly(trans-1,4-diethyl muconate) Single Crystal Subjected to Tensile Stress

S. Nakamoto、Kohji Tashiro、Akikazu Matsumoto2003-01-01Macromolecules

A giant single crystal of poly( trans -1,4-diethyl muconate), obtained from the single crystal of the corresponding monomer by photoinduced solid-state polymerization reaction, was put under tension along the chain axis and the infrared and Raman spectra were measured as a function of tensile stress. The bands of skel…

Advanced Sensor and Energy Harvesting MaterialsPolymer crystallization and propertiesLuminescence and Fluorescent Materials

A Nonorthogonal Coordinate Approach to Atom-Diatom Parallel Reactive Scattering Calculations

Antonio Laganà、Stefano Crocchianti、Noelia Faginas‐Lago 等 5 位作者2003-01-01Collection of Czechoslovak Chemical Communications

Computational approaches to the evaluation of the reactive scattering properties of atom- diatom reactions are revisited. The aim is to exploit both the use of nonorthogonal coordinates in reactive scattering and the restructuring of related computer codes for concurrent computing. To this end, bond length, bond-order…

Advanced Chemical Physics StudiesMarine and coastal ecosystemsCatalytic Processes in Materials Science

G‐quartet self‐assembly under osmotic pressure: remote control by vesicle shrinking rather than stress

Naomi Sakai、Stefan Matile2003-01-01Chirality

Does osmotic pressure stimulate assembly or disassembly of supramolecules in vesicles? Self-assembly was conceivable as intravesicular response to osmotic shrinking upon application of extravesicular overpressure, whereas disassembly was conceivable as a response to bilayer stress in hyperosmotic vesicles. Self-assemb…

Lipid Membrane Structure and BehaviorSpectroscopy and Quantum Chemical StudiesSupramolecular Self-Assembly in Materials

Synthesis of CdS nanoparticles within thermally evaporated aerosol OT thin films

S. Shiv Shankar、Sayandev Chatterjee、Murali Sastry2003-01-01PhysChemComm

In this paper, we discuss the synthesis of cadmium sulfide (CdS) quantum dots within thermally evaporated sodium bis(2-ethylhexyl)sulfosuccinate (AOT) thin films. This procedure uses electrostatic interactions to entrap positively charged cadmium ions into thin films of the anionic surfactant AOT by a simple immersion…

Gold and Silver Nanoparticles Synthesis and ApplicationsQuantum Dots Synthesis And PropertiesSurfactants and Colloidal Systems

Electric Field Modeling and Field Formation Mechanism in HVDC SF, Gas Insulated Systems

IIvgeni Volpov2003-01-01OpenAlex

This paper reports on the electric field behavior in INDC SF, gas insulated systems. In the field model definitions, the SF,/epoxy interfaces are assumed as thin slightly conducting layers with non-zero thickness. The boundary conditions involving surface-reduced parameters of these layers are adopted. This allows avo…

High voltage insulation and dielectric phenomenaPower Transformer Diagnostics and InsulationThermal Analysis in Power Transmission

Corrosion Products of Hot-dip Zn-6%Al-3%Mg Coated Steel Sheet Subjected to Atmospheric Exposure

Takeshi Shimizu、Fukio Yoshizaki、Yasushi MIYOSHI 等 4 位作者2003-01-01鐵と鋼 : 日本鐡鋼協會々誌

Atmospheric corrosion of hot-dip Zn-6%Al-3%Mg alloy coated steel sheet after 5 years of exposure in a severe marine and a rural sites have been investigated compared with Zn-0.2%Al and Zn-4.5%Al-0.1%Mg alloy coated steel sheets.The corrosion resistance of Zn-6%Al-3%Mg alloy coated steel sheet is more superior than tha…

Corrosion Behavior and Inhibition

Recycling of monomers and fillers from high-temperature-vulcanized silicone rubber using tetramethylammonium hydroxide

Yuko Ikeda、Wei Huang、Akira Oku2003-01-01Green Chemistry

The effects of reaction conditions on a novel monomer recycling method for high-temperature-vulcanized silicone rubber are described. A mixture of a methanol solution of (CH3)4NOH, diethylamine and hexane was adopted to partially depolymerize and dissolve the high-temperature-vulcanized silicone rubber under reflux. H…

Corrosion Behavior and InhibitionPolymer Nanocomposites and PropertiesSilicone and Siloxane Chemistry