M. Утинанс、O. Neilands1999-01-01Advanced Materials for Optics and Electronics
The topic of this paper is bipolar organic compounds containing both charged electron donor and electron acceptor groups interconnected by various kinds of bridges (–D–X–A+). Such betaines are subject to photoinduced intramolecular electron transfer (PIET), large change in dipole moment in the excited state and consid…
Organic Electronics and PhotovoltaicsPorphyrin and Phthalocyanine ChemistryPhotochemistry and Electron Transfer Studies
Yuri Zhuk1999-01-01Materials Technology
(1999). Super-Hard Wear-Resistant Coating Systems. Materials Technology: Vol. 14, No. 3, pp. 126-129.
High-Temperature Coating BehaviorsMetal Alloys Wear and PropertiesMaterials Engineering and Processing
Z. Emin1999-01-01OpenAlex
The ferroresonant behaviour of a 275 kV electromagnetic voltage transformers, fed from a sinusoidal supply via circuit breaker grading capacitance, in a National Grid substation in analysed using nonlinear bifurcation diagrams representing system behaviour have been presented showing two possible types of operation, n…
Power Systems Fault DetectionMagnetic Properties and ApplicationsPower Transformer Diagnostics and Insulation
Kwang Sun Ryu、Soon Ho Chang、Seong‐Gu Kang 等 5 位作者1999-01-01Bulletin of the Korean Chemical Society
Department of Chemistry, Yonsei University, Seoul 120-749, KoreaReceived November 10, 1998The polyaniline films with various insoluble parts are fabricated. The oxidation state (1-y) of these polyanilineis 0.53 and 0.54, respectively. To control the interchain and intrachain interaction of the polymer, the polya-nilin…
Conducting polymers and applicationsSynthesis and properties of polymers
С. Н. Чвалун、John Blackwell、J.D. Cho 等 5 位作者1999-01-01Acta Polymerica
Previous work has shown that polymethacrylates with highly tapered side groups, such as poly{2-{2-[2-(2-methacryloyloxyethoxy)-ethoxy]ethoxy}ethyl-3,4,5-tris-(p-dodecyloxy-benzyloxy)benzoate} (H12-ABG-4EO-PMA), form columnar hexagonal (Colh, previously designated φh) liquid crystalline structures. The small angle X-ra…
Liquid Crystal Research AdvancementsHydrogels: synthesis, properties, applicationsSurfactants and Colloidal Systems
M. Muthuraman、M. Bagieu‐Beucher、R. Masse 等 5 位作者1999-01-01Journal of Materials Chemistry
Sodium 4-nitrophenolate 4-nitrophenol dihydrate is a new nonlinear optical crystal of C2 monoclinic symmetry composed of two distinct organic chromophores of respective calculated molecular hyperpolarisabilities β xxx =18.2×10 –30 and 5.2×10 –30 esu. The chromophores are organised in herringbone motifs along inorganic…
Liquid Crystal Research AdvancementsCrystal Structures and PropertiesNonlinear Optical Materials Research
G.M. Tsangaris、G. C. Psarras、Eleni Manolakaki1999-01-01Advanced Composites Letters
The DC and AC conductivity of composites with epoxy resin and nickel particles was investigated for various content of nickel powder from ambient to 120 °C. AC conductivity was measured in the frequency range 10 Hz to 13 MHz. An enhancement of conductivity was evidenced increasing conductive filler content and tempera…
High voltage insulation and dielectric phenomenaDielectric materials and actuatorsSmart Materials for Construction
Nishkam Kasturiya、M.S. Subbulakshmi、Shailesh Gupta 等 4 位作者1999-01-01Defence Science Journal
System design of cold weather protective clothing is a critical process, as it involvesconsideration of the effects of a number of external and internal parameters like environmental factors and physical, physico-mechanical and psychological parameters. The bulk and weightof the textile materials used in protective cl…
Textile materials and evaluations
Yousuke Kurosaki、M. Shiozaki、Kazutaka Higashine 等 4 位作者1999-01-01ISIJ International
The effect of oxide shape on magnetic properties of semiprocessed nonoriented electrical steel sheets produced by single reduction cold rolling process was studied. When oxides in steel sheets were elongated inclusions which were prescribed as B type by JIS, the oxides inhibited grain growth during consumer annealing…
Microstructure and Mechanical Properties of SteelsMetallurgical Processes and ThermodynamicsMagnetic Properties and Applications
Frank J. Feher、Frank Nguyen、Daravong Soulivong 等 4 位作者1999-01-01Chemical Communications
Acid-mediated cleavage and rearrangement of (c-C6H11)6Si6O9 1 by triflic acid (TfOH) and methanesulfonic acid (MsOH) produces good yields of C2-[(c-C6H11)6Si6O8X2] (4a, X = OTf; 4b, X = MsO), which reacts with water, LiNMe2 and LiCCPh to afford C2-[(c-C6H11)6Si6O8(OH)2] 5, C2-[(c-C6H11)6Si6O8(NMe2)2] 8 and C2-[(c-C6H1…
Synthesis and characterization of novel inorganic/organometallic compoundsOrganoboron and organosilicon chemistrySilicone and Siloxane Chemistry
Pieter B. Leezenberg、T.C. Reiley、George W. Tyndall1999-01-01Journal of Vacuum Science & Technology A Vacuum Surfaces and Films
Ultrathin fluoropolymer films were deposited by a plasma-enhanced chemical vapor deposition process, from mixtures of hexafluoropropylene (C3F6) and octafluoropropane (C3F8) precursors. Different monomer feed compositions result in different rates of deposition. The C3F6 is the primary polymerizing species and C3F8 ac…
Surface Modification and SuperhydrophobicityMetal and Thin Film MechanicsDiamond and Carbon-based Materials Research
Tatsuya Morikawa、Daihei Senba、Kenji Higashida 等 4 位作者1999-01-01Materials Transactions JIM
Shear bands (SBs) in cold-rolled austenitic stainless steel 310S have been investigated by using transmission electron microscopy (TEM). Shear Bands appear in the region of twin-matrix lamellae which have already developed at moderate strain. Inside the shear band, fine grains are observed, and the shape of each grain…
Microstructure and mechanical propertiesMicrostructure and Mechanical Properties of SteelsAluminum Alloy Microstructure Properties
John Joseph、T. Vimala、James Raju 等 4 位作者1999-01-01Journal of Physics D Applied Physics
Structural investigations of the compounds in the series Ba 0.27 Sr 0.73 Zr y Ti 1- y O 3 have been carried out. The crystal structure goes to lower symmetry with increasing Zr content and the tolerance factor decreases. The variation of V a / V b is linear with the tolerance factor. The tilt system is a - a - c 0 for…
Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesMicrowave Dielectric Ceramics Synthesis
A. Yu. Kuznetsov、А. В. Кружалов、И. Н. Огородников 等 5 位作者1999-01-01Physics of the Solid State
The results of an investigation of the electronic structure of lithium tetraborate crystals using experimental (x-ray photoelectron spectroscopy) and theoretical (quantum-chemical modeling) methods are reported. The experimental spectrum of the valence-band states of the crystal lies 2–15 eV below the Fermi level and…
Crystal Structures and PropertiesX-ray Diffraction in CrystallographyInorganic Fluorides and Related Compounds
Toshiaki Himemiya1999-01-01Materials Transactions JIM
To predict phase selection in a ternary eutectic system, approximate growth models of eutectic cells are proposed. Two models are proposed. The first assumes that the growth adjustment should be governed by elimination and branching of the two solid phases and assumes the extreme condition and uses the Burden-Hunt mod…
Aluminum Alloy Microstructure PropertiesSolidification and crystal growth phenomenaCrystallization and Solubility Studies
Nitin B. Joshi、Douglas E. Hirt1999-01-01Applied Spectroscopy
The objective of this research is to experimentally characterize the spatial distribution of an additive across the thickness of a single-layer polymer film. Concentration-distribution data are then used to quantify the amount of additive that diffuses from the bulk of the film to the film surfaces as a function of ti…
Polymer crystallization and propertiesNanocomposite Films for Food PackagingPolymer Science and PVC
M. Ghiladi、Kenneth Jensen、Jianzhong Jiang 等 7 位作者1999-01-01Journal of the Chemical Society Dalton Transactions
The dinucleating phenolate-hinged ligand 4-tert-butyl-2,6-bis[bis(2-pyridylmethyl)aminomethyl]phenolate (bpbp–) has been used to prepare a series of FeIIIMII complexes containing independent species at the exogenous binding sites. These sites are occupied by fluoride and water ligands and show the general formulation…
Metal complexes synthesis and propertiesMagnetism in coordination complexesMetal-Catalyzed Oxygenation Mechanisms
Hüseyin Yercan、Fatma Kutay1999-01-01OpenAlex
Collagen, as a fibrous protein constituting approximately one third of the total protein in the body is synthesized by fibroblasts and is a major component of extracellular matrix in many tissues such as vessels, heart, kidney, liver, skin, tendons, bone and cartilage. The collagen molecule consists of three polypepti…
Collagen: Extraction and Characterization
John P. Barton1999-01-01Journal of the Optical Society of America A
A cylindrical coordinate separation-of-variables solution is developed for the determination of the internal and the near-surface electromagnetic fields for the arrangement of a focused beam incident upon a homogeneous infinite circular cylinder. The angle of incidence and the focal point location of the beam, as well…
Advanced Measurement and Metrology TechniquesOptical Coatings and GratingsSurface Roughness and Optical Measurements
J.D. Chiodo、Eric Billett、David J. Harrison1999-01-01OpenAlex
This paper reports initial results in the application of shape memory polymer (SMP) technology to the active disassembly of electronic products. The smart material SMP of polyurethane (PU) composition was employed. Created for these experiments were novel SMP releasable fasteners, with which it is possible to effectiv…
Advanced Memory and Neural ComputingPolymer composites and self-healingManufacturing Process and Optimization