Hima Varghese、S. S. Bhagawan、Sabu Thomas1999-04-04Journal of Applied Polymer Science
Blends of acrylonitrile butadiene rubber (NBR) and poly(ethylene-co-vinyl acetate) (EVA), with varying proportions of the components, were vulcanized using different crosslinking systems, namely, sulfur (S), dicumyl peroxide (DCP), and a mixed system (S + DCP). Mechanical properties, such as stress–strain behavior, te…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesEpoxy Resin Curing Processes
Shinn‐Jen Chang、Feng‐Chih Chang1999-04-04Journal of Applied Polymer Science
Poly(ethylene terephthalate)-co-poly(ethylene DDP)s [PET-co-poly(ethylene DDP)s], were synthesized by charging 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOP), itaconic acid, terephthalic acid, and ethylene glycol in one reactor to conduct the microaddition reaction (using H2PtCl6 as catalyst), esterification…
biodegradable polymer synthesis and propertiesFlame retardant materials and propertiesCarbon dioxide utilization in catalysis
D.M.L. Goodgame、D.A. Grachvogel、Izhar Hussain 等 5 位作者1999-04-03Inorganic Chemistry
Bis(amides) of the type CH(3)CONH(CH(2))(n)()NHCOCH(3) (n = 2, 4, or 6) react with a range of manganese(II) and cobalt(II) salts to produce polymeric "framework" arrays, five of which have been studied by X-ray crystallography. Hexamethylenebis(acetamide) (HMBA) forms the compound [Co(HMBA)(3)](CoCl(4)).2EtOH in which…
Metal-Organic Frameworks: Synthesis and ApplicationsChemical Synthesis and AnalysisLanthanide and Transition Metal Complexes
E. Hesse、J. A. Creighton1999-04-03Langmuir
The effects of radio-frequency-excited oxygen and hydrogen plasmas on gold island films with adsorbed CN -, thiophenate, or p -nitrobenzoate ions have been investigated by surface-enhanced Raman spectroscopy (SERS). An oxygen plasma caused oxidation of adsorbed CN - to Au(CN) 4 -, and there was evidence of oxidation o…
Gold and Silver Nanoparticles Synthesis and ApplicationsElectrochemical Analysis and ApplicationsIon-surface interactions and analysis
K.‐J. Marschall、Lesław Mleczko1999-04-03Industrial & Engineering Chemistry Research
An internally circulating fluidized-bed (ICFB) reactor (i.d. eff = 1.9 cm, H riser = 10 and 20 cm, respectively) was applied to investigate the catalytic partial oxidation of methane to synthesis gas over Ni/α-Al 2 O 3 (Ni loading, 1 and 5 wt %; particle diameter, 71−160 and 250−355 μm). The experiments were performed…
Catalytic Processes in Materials ScienceCatalysts for Methane ReformingCatalysis and Oxidation Reactions
Amit Bhattacharya、Amitabha De1999-04-02Journal of macromolecular science. Part C, Reviews in macromolecular chemistry and physics/Journal of macromolecular science. Reviews in macromolecular chemistry and physics
The entire history of chemistry bears witness to the extraordinary importance of the phenomena of solubility. With the discovery of conducting polymers in the late 1970s, there was genuine interest...
Advanced Sensor and Energy Harvesting MaterialsAdvanced Memory and Neural ComputingConducting polymers and applications
Yabin Lei、James K. Hurst1999-04-02Langmuir
Photoresponsive asymmetrically organized systems based upon small unilamellar dihexadecyl phosphate (DHP) vesicles were constructed by entrapping high concentrations of potassium ion within the vesicular aqueous core and incorporating either an amphiphilic trans -azobenzene-containing phosphate monoester or an amphiph…
Molecular Sensors and Ion DetectionPorphyrin and Phthalocyanine ChemistryLuminescence and Fluorescent Materials
D. N. Argyriou、H. N. Bordallo、J. F. Mitchell 等 5 位作者1999-04-02arXiv
Neutron diffraction data presented in this paper demonstrates the relevance of lattice displacement above TC, in our understanding of the evolution of the crystal structure with temperature in the layered CMR manganite La1.2Sr1.8Mn2O7. The anomalous temperature behavior of thermal diffuse scattering (TDS) in La1.2Sr1.…
Materials ScienceStrongly Correlated Electrons
R. Brako、D. Sokcevic1999-04-02arXiv
We formulate the theory of the perturbation caused by an adsorbate upon the substrate lattice in terms of a local modification of the interatomic potential energy around the adsorption site, which leads to the relaxation of substrate atoms. We apply the approach to CO chemisorption on close-packed metal surfaces, and…
Materials Science
Wolfgang Wernsdorfer、Roberta Sessoli1999-04-02OpenAlex
An experimental method based on the Landau-Zener model was developed to measure very small tunnel splittings in molecular clusters of eight iron atoms, which at low temperature behave like a nanomagnet with a spin ground state of S = 10. The observed oscillations of the tunnel splittings as a function of the magnetic…
Advanced Chemical Physics StudiesMagnetism in coordination complexesAdvanced NMR Techniques and Applications
S. V. Bulyarskiĭ、Yu. N. Serëzhkin、V. K. Ionychev1999-04-01Semiconductors
A technique for determining the deep-center parameters from the relaxational delay of avalanche breakdown of a p-n junction is investigated. The method implemented does not impose any restrictions on the relation between the concentration of the deep centers and that of the dopant impurities and can be used in those c…
Semiconductor Quantum Structures and DevicesSemiconductor materials and devicesElectron and X-Ray Spectroscopy Techniques
Snezhana I. Abarzhi1999-04-01Physica Scripta
We make some notes on symmetry of the steady bubbles generated by the Rayleigh-Taylor instability and on the opportunity of their experimental observation.
Hydrocarbon exploration and reservoir analysisFluid Dynamics and MixingUltrasound and Cavitation Phenomena
W.Y. Chu、X.M. Liu、Jing‐Li Luo 等 4 位作者1999-04-01Canadian Metallurgical Quarterly
The liquid metal-induced embrittlement (LME) of 7075 Al alloy by Ga was investigated by using modified wedge open loaded (WOL) specimens. The results showed that the adsorption of Ga atoms could facilitate local plastic deformation of the base metal and there was an observable concave plastic zone at the notch tip. A…
Aluminum Alloy Microstructure PropertiesHydrogen embrittlement and corrosion behaviors in metalsHigh Temperature Alloys and Creep
António Lafuente、Inmaculada Valverde‐Asenjo、Concepción González Huecas1999-04-01Communications in Soil Science and Plant Analysis
This work gathers together the study of five soil pedons developed grounds in diapiric formation found in the North of Spain. Three of them formed on igneous volcanic materials (ophites) and two of them formed on sedimentary materials (clay and gypsum) of the Triasic Keuper, in a Mediterranean climate. Initially the m…
Groundwater and Isotope GeochemistrySoil and Unsaturated FlowClay minerals and soil interactions
C. Monticelli、M. Fonsati、Gábor Mészáros 等 4 位作者1999-04-01Journal of The Electrochemical Society
The spectral analysis of the electrochemical noise produced by copper corrosion during exposures to artificial industrial waters of different pH values was compared to the results obtained by electrochemical impedance spectroscopy (EIS). The noise impedance spectra are in good agreement with EIS spectra. A particularl…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsConcrete Corrosion and Durability
Yûsuke Ujihira、H.-L. Li、Kenji Ito1999-04-01Acta Physica Polonica A
Temperature dependence of nanoscopic environment of shape memory polymers such as polynorbornene (Tg=313 K), polyurethane (T g=321 K = dynamic viscoelasticity, destruction of hydrogen bond 353 K) and styrene-butadiene copolymer (Tm= 333 K) is observed in terms of free volume parameters -average size, numerical concent…
Silicone and Siloxane ChemistryMuon and positron interactions and applications
Z.-M. Wang、T. Arai、Mikio Kumagai1999-04-01Adsorption Science & Technology
Three kinds of mordenite were examined for the adsorptive separation and removal of trace amounts of 14 CO 2 and moist NO x contained in the off-gases of reprocessing plants for spent nuclear fuels. It was found that protonation of mordenite eliminated any possible removal of CO 2 by specific adsorption but induced th…
Catalytic Processes in Materials ScienceZeolite Catalysis and SynthesisAmmonia Synthesis and Nitrogen Reduction
E. A. Belenkov、E. A. Karnaukhov1999-04-01Physics of the Solid State
The relationship between the interatomic distances and crystal dimensions in dispersed carbon is studied by x-ray structure analysis and by performing model calculations. It is established that the interatomic distances in dispersed carbon are determined by the dimensions of the crystals along the crystallographic a a…
Carbon Nanotubes in CompositesGraphene research and applicationsBoron and Carbon Nanomaterials Research
Chi‐Hong Chang、Shu‐Hua Cheng、Ye Su1999-04-01Journal of the Chinese Chemical Society
Abstract A systematic study for the effect of axially coordinated monovalent anions on the electrode reactions of several manganese porphyrins in acetonitrile is presented. Potential shifts of the metal‐centered reduction with changes in counterion were related to the degree of Mn(III)‐counterion interaction. In the e…
Electrochemical sensors and biosensorsMagnetism in coordination complexesPorphyrin and Phthalocyanine Chemistry
John M. Lannon、Qingru Meng1999-04-01Surface Science Spectra
We report x-ray photoemission spectra for a poly(oxymethylene) (POM) polymer (also known as acetal). XPS spectra were acquired with a SSI model SSX-100 instrument using monochromated Al Kα x-rays. We present the survey spectrum (binding energy 0–1000 eV) and a narrow spectrum of the C 1s and O 1s photoelectron peaks.
Advancements in Photolithography TechniquesX-ray Spectroscopy and Fluorescence AnalysisElectron and X-Ray Spectroscopy Techniques