M. A. Velbel2004-01-01Journal of Geoscience Education
This exercise for mineralogy/geochemistry courses uses optical microscopy to measure the grain sizes of equant halite crystals, and the time for complete dissolution of each grain. The required equipment is readily available in most science departments: microscopes, thermometers, stopwatches, glassware, and table salt…
Calcium Carbonate Crystallization and InhibitionMinerals Flotation and Separation TechniquesMine drainage and remediation techniques
Dongming Zhu、Dennis S. Fox、Narottam P. Bansal 等 4 位作者2004-01-01Defense Technical Information Center (DTIC)
Advanced thermal and environmental barrier coatings (TEBCs) are being developed for low- emission SiC/SiC ceramic matrix composite (CMC) combustor and vane applications to extend the CMC liner and vane temperature capability to 1650 degrees C (3000 degrees F) in oxidizing and water-vapor-containing combustion environm…
Advanced ceramic materials synthesisSemiconductor materials and devicesAdvanced materials and composites
Guihua Liao、Keying He、Liusheng Li 等 4 位作者2004-01-01Journal of Minerals and Materials Characterization and Engineering
Effects of some kinds of alumina on physical properties of high-purity andalusite based refractory were studied, and, effects of type and amount of added alumina on phase composition and microstructure of the refractory were investigated by XRD and SEM. The results revealed that the sintering property of the refractor…
Advanced ceramic materials synthesisAluminum Alloys Composites PropertiesBauxite Residue and Utilization
Timothy P. Gabb、Jack Telesman、Pete Kantzos 等 6 位作者2004-01-01OpenAlex
The objective of this study was to assess the relaxation of stresses at increasing temperatures in several PM superalloy disks. The effects of temperature, time, and plasticity were examined.
Metallurgy and Material FormingMetal Alloys Wear and PropertiesPowder Metallurgy Techniques and Materials
Olivier Monnier、Horst Lange‐Bertalot、Frédéric Rimet 等 5 位作者2004-01-01HAL (Le Centre pour la Communication Scientifique Directe)
International audience
Lichen and fungal ecologyBryophyte Studies and RecordsDiatoms and Algae Research
John Z. Lu、Qinglin Wu、Ioan I. Negulescu2004-01-01Wood and Fiber Science (Society of Wood Science and Technology)
Maleation significantly influenced thermal and dynamic mechanical properties of resultant wood-PVC composites. Experimental results indicated that storage modulus (E′) and complex modulus (E*) increased with increase of maleated polypropylene (MAPP) retention at low MAPP retention for both E-43 and G-3015, but leveled…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesNatural Fiber Reinforced Composites
Isao Mochida、Seong‐Ho Yoon、Seongyop Lim 等 4 位作者2004-01-01TANSO
Recent progress of structural models of carbon materials is reviewed by the classification of structures into nano, and mesoscopic views. The graphitic materials are viewed on the basis of the structural units of hexagon plane, graphite crystal, nano, meso, and macroscopic structural units. Novel 3-dimensional models…
Carbon Nanotubes in CompositesGraphene research and applicationsFiber-reinforced polymer composites
N Yaghoubi、Hamid Mirzadeh2004-01-01OpenAlex
was carried out with 5 wt% NaOH at 90°C in a nitrogen atmosphere.Chitosan was prepared with high degree of deacetylation. The effect of deacetylation conditions in the multistage alkali treatments in comparison with continuous alkali treatment was studied. Chitosan’s nitrogen content and the extent of degree of deacet…
Nanocomposite Films for Food PackagingElectrospun Nanofibers in Biomedical ApplicationsSilk-based biomaterials and applications
Marcin Lemański、Janusz Badur2004-01-01Archives of Thermodynamics
High temperature fuel cells of the solid oxide type (SOFC) are simple electrochemical devices that operate at 1000 o C and are capable of con- verting the chemical energy of natural gas to AC electric power at approxi- mately 55-60% efficiency (net AC/LHV in atmospheric pressure). In this paper, a zero-dimensional mod…
Advancements in Solid Oxide Fuel CellsFuel Cells and Related MaterialsCatalysis and Oxidation Reactions
Н. Г. Лебедев、И. В. Запороцкова、Л. А. Чернозатонский2004-01-01International Journal of Quantum Chemistry
Abstract The results of calculations of the electronic and energy characteristics of atomic hydrogen and fluorine adsorption processes on an external surface of single‐wall hiral carbon nanotubes (n,m) are represented. Molecular cluster model within a framework of quantum chemical semiempirical schemes modified neglec…
Carbon Nanotubes in CompositesGraphene research and applicationsFullerene Chemistry and Applications
Bo‐Kuai Lai、H. Kahn、S.M. Phillips 等 4 位作者2004-01-01Ferroelectrics
Microactuators based on PbZr1-xTixO3 (PZT) and TiNi shape memory alloys (SMAs) are compared using microelectromechanical systems (MEMS) micropumps and microvalves as typical devices. The advantages of PZT-based microactuation include large actuation forces and high operating frequencies, leading to high operating pres…
Ferroelectric and Piezoelectric MaterialsShape Memory Alloy TransformationsElectronic and Structural Properties of Oxides
Paul A. Anderson、A. Robert Armstrong、Peter D. Barker 等 6 位作者2004-01-01Dalton Transactions
Large crystallites of high purity zeolite rho were synthesized by controlled monitoring of the aging and heating period of the mother gel. The microwave conductivity of Rb-rho doped with up to 20 Rb atoms per unit cell was measured over the temperature range 15-300 K, and the structures of three of the samples were ex…
Zeolite Catalysis and SynthesisAdvanced NMR Techniques and ApplicationsSolid-state spectroscopy and crystallography
Quoc Toan Le、Caroline M. Whelan、Herbert Struyf 等 9 位作者2004-01-01Electrochemical and Solid-State Letters
The effect of CF 4 / O 2 -based plasma treatment on two types of porous low dielectric constant (low- k ) materials was investigated. For the microporous film, the surface appears to be sealed, most likely by the formation of a silicon oxide-like layer within 5 s of treatment. For both microporous and mesoporous mater…
Corrosion Behavior and InhibitionSemiconductor materials and devicesCopper Interconnects and Reliability
D.S. Preece、Vanessa S. Berg2004-01-01OpenAlex
Computer hydrocode analyses and ballistic testing have been used to investigate the effectiveness of steel plate armor against lead/copper bullets commonly available in the U.S. and across the world. Hydrocode simulations accurately predict the steel plate thickness that will prevent full penetration as well as the im…
High-Velocity Impact and Material BehaviorTraumatic Ocular and Foreign Body InjuriesTransportation Safety and Impact Analysis
Jonghyuk Lee、Brendan Twamley、George B. Richter‐Addo2004-01-01Dalton Transactions
Several new ruthenium porphyrins containing nitrosoarene ligands have been synthesized and characterized by IR and (1)H NMR spectroscopy, and by single-crystal X-ray crystallography. Bis-nitrosoarene complexes of the form (por)Ru(ArNO)(2)(Ar = aryl group; por = TPP, TTP; TPP = tetraphenylporphyrinato dianion, TTP = te…
Supramolecular Chemistry and ComplexesMagnetism in coordination complexesPorphyrin and Phthalocyanine Chemistry
Petr Šittner、D. Neov、P. Lukáš 等 4 位作者2004-01-01Journal of Neutron Research
Texture transformations accompanying B2 cubic to B19′ monoclinic martensitic transformation in NiTi shape memory alloy occurring upon stress-free cooling and cooling under applied compressive stress of 250 MPa were investigated by neutron diffraction. In the case of stress-free cooling, the martensite texture was foun…
Shape Memory Alloy Transformations
Takahiro Ohno、Seiichiro Ii、Naoya Shibata 等 6 位作者2004-01-01MATERIALS TRANSACTIONS
In this study, the grain boundary structure of [001] symmetric tilt boundary with a tilt angle of 66° was investigated using a rutile-type TiO2 bicrystal. The tilt angle of this boundary has a misfit angle of 1.7° from an exact Σ13 approaching to Σ17 relation. High-resolution transmission electron microscopy study (HR…
Microstructure and mechanical propertiesAluminum Alloy Microstructure Propertiesnanoparticles nucleation surface interactions
Zhi Chen、Qiuming Gao、Chundong Wu 等 5 位作者2004-01-01Chemical Communications
An ordered, homogeneously distributed and uniform 0.9 nm Ag array, which exhibits an unusual UV-vis surface plasmon resonance absorption peak at 355 nm with the largest blue-shift position and controllable intensity, has been successfully prepared by a simple soft chemical approach using the nanoporous VSB-1 as the te…
Advanced biosensing and bioanalysis techniquesQuantum Dots Synthesis And PropertiesCopper-based nanomaterials and applications
J. Milewski、Andrzej Miller2004-01-01OpenAlex
Presentation of concept of SOFC model is given. The SOFC model was built in HYSYS.Plant environment based on its standard libraries. Main elements of SOFC model and chemical reactions are presented. Selected performance characteristics at the design point of stand-alone SOFC are presented. The new equation to define o…
Catalytic Processes in Materials ScienceAdvancements in Solid Oxide Fuel CellsCatalysis and Oxidation Reactions
Jae‐Young Cho、T. Inoue、Fuxing Yin 等 4 位作者2004-01-01MATERIALS TRANSACTIONS
Electron backscattered diffraction analysis has been used to investigate the effect of shear deformation on the microstructural evolution of a Ni-30Fe alloy during hot deformation. The alloy was compressed by 50% or 75% in thickness at a strain rate of 1/s in a single pass at 1023 K using a hot compression simulator.…
Microstructure and mechanical propertiesMicrostructure and Mechanical Properties of SteelsMetallurgy and Material Forming