Malte Behrens、Sandra Scherb、Christian Näther 等 4 位作者2003-07-01Zeitschrift für anorganische und allgemeine Chemie
Abstract The four new thiostannates [Ni(en) 3 ] 2 Sn 2 S 6 ( 1 ) (en = ethylenediamine), [Ni(dap) 3 ] 2 Sn 2 S 6 · 2 H 2 O ( 2 ) (dap = 1, 2‐diaminopropane), [Co(tren)] 2 Sn 2 S 6 ( 3 ) and [Ni(tren)] 2 Sn 2 S 6 ( 4 ) (tren = tris(2‐aminoethyl)amine) were prepared under solvothermal conditions. In all compounds [Sn 2…
Crystal Structures and PropertiesOrganometallic Compounds Synthesis and CharacterizationInorganic Chemistry and Materials
Amelia Nancy Giannuzzo、Héctor J. Boggetti、Mónica A. Nazareno 等 4 位作者2003-07-01Phytochemical Analysis
The highest yield (14.4 g/kg) of naringin, the major flavonoid from the peel of Citrus paradisi L., that could be achieved by supercritical fluid extraction was obtained using supercritical carbon dioxide modified with 15% ethanol and fresh (rather than dried) peels at 95 bar and 58.6 degrees C. This yield is higher t…
Phase Equilibria and ThermodynamicsMesoporous Materials and CatalysisCancer Treatment and Pharmacology
Charles U. Pittman、Guizhi Li、Hanli Ni2003-07-01Macromolecular Symposia
Abstract The incorporation of both monofunctional and multifunctional polyhedral oligomeric silsesquioxane (POSS) derivatives into crosslinked resins has been conducted as a route to synthesize hybrid organic/inorganic nanocomposites. The central cores of POSS molecules contain an inorganic cage with (SiO 1.5 ) n stoi…
Synthesis and characterization of novel inorganic/organometallic compoundsSynthesis and properties of polymersSilicone and Siloxane Chemistry
Xuefeng Wang、Lester Andrews、Simon Tam 等 5 位作者2003-07-01Journal of the American Chemical Society
The reaction of laser-ablated Al atoms and normal-H(2) during co-deposition at 3.5 K produces AlH, AlH(2), and AlH(3) based on infrared spectra and the results of isotopic substitution (D(2), H(2) + D(2) mixtures, HD). Four new bands are assigned to Al(2)H(4) from annealing, photochemistry, and agreement with frequenc…
Advanced Chemical Physics StudiesHydrogen Storage and MaterialsBoron and Carbon Nanomaterials Research
X. Li、Yongda Yan、T. A. Gessert 等 8 位作者2003-07-01Journal of Vacuum Science & Technology A Vacuum Surfaces and Films
We have fabricated nitrogen-doped zinc oxide (ZnO) films that demonstrate p-type behavior by using metalorganic chemical vapor deposition. In our experiment, diethylzinc is used as a Zn precursor, and NO gas is used to supply both O and N to form a N-doped ZnO (ZnO:N) film. With these precursors, we have routinely rea…
ZnO doping and propertiesGas Sensing Nanomaterials and SensorsGa2O3 and related materials
Zuzana Navrátilová、Petr Kula2003-07-01Electroanalysis
Abstract This review presents the preparation and use of clay modified electrodes with emphasis on analytical applications. Besides, some investigations on ion‐exchange and sorption mechanisms are outlined. Expected prospects of clay modified electrodes in the field of electrochemistry are discussed briefly.
Conducting polymers and applicationsAnalytical Chemistry and SensorsLayered Double Hydroxides Synthesis and Applications
Robert Stegeman、Ladislav Jankovic、Hongki Kim 等 10 位作者2003-07-01Optics Letters
An experimental system has been assembled to measure the absolute values of the Raman gain spectrum for millimeter-thick glass samples. Results are reported for two new oxide glasses with Raman gain coefficients as much as 30 times larger than that of fused silica and more than twice its spectral coverage.
Glass properties and applicationsPhase-change materials and chalcogenidesMineralogy and Gemology Studies
H.G. Georgiadis2003-07-01Journal of Applied Mechanics
This study aims at determining the elastic stress and displacement fields around a crack in a microstructured body under a remotely applied loading of the antiplane shear (mode III) type. The material microstructure is modeled through the Mindlin-Green-Rivlin dipolar gradient theory (or strain-gradient theory of grade…
Numerical methods in engineeringComposite Material MechanicsNonlocal and gradient elasticity in micro/nano structures
Douglas K. Tinkham、Carlos A. Zuluaga、Harold H. Stowell2003-07-01American Mineralogist
A series of MnO-Na2O-CaO-K2O-FeO-MgO-Al2O3-SiO2-H2O (MnNCKFMASH) metapelite pseudosections highlights the dependence of predicted mineral assemblages on bulk rock Al2O3 and Mg# [MgO/(MgO + FeO)]. T-XAl pseudosections portray the dependence of staurolite, biotite, and aluminum silicate on Al2O3 content, allowing the di…
Geological and Geochemical AnalysisGeochemistry and Elemental AnalysisClay minerals and soil interactions
Jeffrey R. Allwardt、Sung Keun Lee、Jonathan F. Stebbins2003-07-01American Mineralogist
The fraction of O atoms as non-bridging O atoms (NBO) can be well approximated based on composition alone in many silicate glasses, but the NBO preference for specific network forming cations is much less well known. Using oxygen-17 ( 17 O) NMR on low-silica calcium aluminosilicate (CAS) glasses, this study shows that…
Glass properties and applicationsClay minerals and soil interactionsMineralogy and Gemology Studies
Kevin L. Jensen2003-07-01Journal of Vacuum Science & Technology B Microelectronics and Nanometer Structures Processing Measurement and Phenomena
In this article, we examine the Fowler–Nordheim (FN) equation for field emission using pedagogical models to introduce and illuminate its origins, limitations, extensions, and application to multidimensional structures. The analyses of modern electron sources generally invoke either the FN equation or the Richardson–L…
Carbon Nanotubes in CompositesElectron and X-Ray Spectroscopy TechniquesChemical and Physical Properties of Materials
I. L. Hosier、Rufina G. Alamo、P. Esteso 等 5 位作者2003-07-01Macromolecules
Four sets of random propylene-based copolymers with 1−10 mol % of ethylene, 1-butene, 1-hexene, or 1-octene as co-units, synthesized with the same metallocene catalyst, were investigated by differential scanning calorimetry and wide-angle X-ray scattering following rapid and isothermal crystallization. Parameters rela…
Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties
Veska Toncheva、E. Schacht、S.Y. Ng 等 5 位作者2003-07-01Journal of drug targeting
Amphiphilic AB and ABA block copolymers have been prepared from poly (ortho esters) and poly (ethylene glycol). Such block copolymers readily form micellar dispersions in water, or buffers. The CMC is in the range of 3 x 10(-4)-5 x 10(-4) g/l which is a value low enough to assure retention of micelle integrity upon in…
Nanoparticle-Based Drug DeliveryAdvanced Polymer Synthesis and CharacterizationDendrimers and Hyperbranched Polymers
Casey E. Ravenhurst、Mary K. Roden‐Tice、Donald S. Miller2003-07-01Canadian Journal of Earth Sciences
It is well known that the optically measured lengths of fission tracks in apatite crystals are a function of etching conditions, crystallographic orientation of the track, composition of the crystal, and the state of thermal annealing. In this study we standardize etching conditions and optimize track length measurabi…
Nuclear reactor physics and engineeringNuclear Materials and PropertiesNuclear Physics and Applications
P. Soundarrajan、Ajeeta Patil、Liming Dai2003-07-01Journal of Vacuum Science & Technology A Vacuum Surfaces and Films
The excellent optoelectronic, mechanical, and thermal properties of carbon nanotubes have made them very attractive for a wide range of potential applications. However, many applications require the growth of aligned carbon nanotubes with surface modification. We have developed a simple pyrolytic method for large-scal…
Carbon Nanotubes in CompositesForce Microscopy Techniques and ApplicationsMechanical and Optical Resonators
Frederick Ignatz‐Hoover、Byron H. To、Raja Datta 等 6 位作者2003-07-01Rubber Chemistry and Technology
Abstract Migration of compounding ingredients is an important factor in the overall properties and performance of rubber articles containing a number of layers for example, a tire, a hose or a conveyor belt. In certain cases, migration of compounding ingredients before, during and after vulcanization in rubber compoun…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesLubricants and Their Additives
Richard W. Date、Duncan W. Bruce2003-07-01Journal of the American Chemical Society
Mixtures of rodlike and disklike liquid crystals suffer from phase separation. However, such mixtures can be homogenized if a molecule is added which comprises a rod- and a disklike fragment linked together covalently. We have termed such a molecule a shape amphiphile and believe that this represents a new class of am…
Liquid Crystal Research AdvancementsSurfactants and Colloidal SystemsMolecular spectroscopy and chirality
Takumi Terachi、Nobuo Totsuka、Takuyo Yamada 等 7 位作者2003-07-01Journal of Nuclear Science and Technology
In order to investigate the relationship between the susceptibility of primary water stress corrosion cracking (PWSCC) in Alloy 600 and the content of dissolved hydrogen (DH) in the primary water of pressurized water reactors (PWR), structural analysis of oxide films formed under four different DH conditions in simula…
Hydrogen embrittlement and corrosion behaviors in metalsNuclear Materials and PropertiesNon-Destructive Testing Techniques
M.L.T. Zweers、Dirk W. Grijpma、G.H.M. Engbers 等 4 位作者2003-07-01Journal of Biomedical Materials Research Part B Applied Biomaterials
In local drug delivery, nanoparticles based on biodegradable polymers can function as vehicles with controlled drug-release properties. To achieve a well-controlled drug-release profile, control over the particle size is of great importance. Therefore, biodegradable polyester nanoparticles were prepared by the salting…
Nanoparticle-Based Drug Deliverybiodegradable polymer synthesis and propertiesAdvanced Drug Delivery Systems
Roman Glass、M. Arnold、Jacques Blümmel 等 6 位作者2003-07-01Advanced Functional Materials
Abstract This paper introduces an approach where the match of two different length scales, i.e., pattern from self‐assembly of block copolymer micelles (< 100 nm) and electron‐beam (e‐beam) writing (> 50 nm), allow the grouping of nanometer‐sized gold clusters in very small numbers in even aperiodic pattern and…
Block Copolymer Self-AssemblyMachine Learning in Materials ScienceElectron and X-Ray Spectroscopy Techniques