Nicola V. Y. Scarlett、Ian C. Madsen、L. M. D. Cranswick 等 8 位作者2002-07-18Journal of Applied Crystallography
The International Union of Crystallography (IUCr) Commission on Powder Diffraction (CPD) has sponsored a round robin on the determination of quantitative phase abundance from diffraction data. The aims of the round robin have been detailed by Madsen et al. [ J. Appl. Cryst. (2001), 34 , 409–426]. In summary, they were…
Crystal Structures and PropertiesCrystallography and molecular interactionsX-ray Diffraction in Crystallography
Hitoshi Sashiwa、Norioki Kawasaki、Atsuyoshi Nakayama 等 6 位作者2002-07-18Biomacromolecules
ADVERTISEMENT RETURN TO ISSUEPREVNoteChemical Modification of Chitosan. 14: 1 Synthesis of Water-Soluble Chitosan Derivatives by Simple AcetylationHitoshi Sashiwa, Norioki Kawasaki, Atsuyoshi Nakayama, Einosuke Muraki, Noboru Yamamoto, and Sei-ichi AibaView Author Information Green Biotechnology Research Group, The Sp…
Nanocomposite Films for Food Packagingbiodegradable polymer synthesis and properties
Sebastien Ragot、Jean-Michel Gillet、Pierre J. Becker2002-07-18arXiv
We investigate different correlation mechanisms for two-electron systems and compare their respective effects on various electron distributions. The simplicity of the wave functions used allows for the derivation of closed-form analytical expressions for all electron distributions. Among other features, it is shown th…
Strongly Correlated Electronsphysics.atm-clusChemical Physicsphysics.atom-phMaterials Science
T. Castan、A. Planes、A. Saxena2002-07-18arXiv
For multi-stage, displacive structural transitions we present a general framework that accounts for various intermediate modulated phases, elastic constant, phonon and related thermodynamic anomalies. Based on the presence or absence of modulated phases we classify these transformations in four categories and apply th…
Materials Science
A. Garcia-Lekue、J. M. Pitarke、E. V. Chulkov 等 5 位作者2002-07-18arXiv
The combined effect of single-particle and collective surface excitations in the decay of image-potential states on Ag surfaces is investigated, and the origin of the long-standing discrepancy between experimental measurements and previous theoretical predictions for the lifetime of these states is elucidated. Althoug…
Materials Science
E. Cuansing、H. Nakanishi2002-07-18arXiv
The eigenvalue spectra of the transition probability matrix for random walks traversing critically disordered clusters in three different types of percolation problems show that the random walker sees a developing Euclidean signature for short time scales as the local, full-coordination constraint is iteratively appli…
cond-mat.stat-mechMaterials Science
J.C. Lasjaunias、M. Saint-Paul、Ante Bilušić 等 8 位作者2002-07-18Physical review. B, Condensed matter
We report on extended investigation of the thermal transport and acoustical properties on hard carbon samples obtained by pressurization of ${\mathrm{C}}_{60}$ fullerene. Structural investigations performed by different techniques on the same samples indicate a very inhomogeneous structure at different scales, based o…
Thermal properties of materialsCarbon Nanotubes in CompositesFullerene Chemistry and Applications
Mark R. Pederson、Noam Bernstein、Jens Kortus2002-07-18arXiv
From density-functional-theory (DFT) based methods we calculate the vibrational spectrum of the Mn_{12}O_{12}(COOH)_{16}(H_2 O)_4 molecular magnet. Calculated infrared intensities are in accord with experimental studies. There have been no ab initio attempts at determining which interactions account for the fourth-ord…
Materials Science
Silvio Aime、Daniela Delli Castelli、Franco Fedeli 等 4 位作者2002-07-18Journal of the American Chemical Society
A paramagnetic Yb(III) complex bearing six exchangeable amide protons, [Yb(MBDO3AM)](3+), has been investigated with the aim of developing a MRI-CEST (chemical exchange saturation transfer) contrast agent responsive to the concentration of L-lactate. The complex binds the substrate quantitatively to yield [Yb(MBDO3AM)…
Lanthanide and Transition Metal ComplexesAdvanced MRI Techniques and ApplicationsAdvanced NMR Techniques and Applications
Aji P. Mathew、Alain Dufresne2002-07-18OpenAlex
The plasticizing effect of different polyols such as glycerol, xylitol, sorbitol, and maltitol on waxy maize starch was investigated. The concentration of plasticizer was fixed at 33 wt % (dry basis of starch). The structure and mechanical performance of resulting films conditioned at different relative humidity level…
biodegradable polymer synthesis and propertiesNanocomposite Films for Food PackagingLignin and Wood Chemistry
Frank Würthner、Sheng Yao、Tony Debaerdemaeker 等 4 位作者2002-07-18OpenAlex
Aggregation of polar merocyanine dyes has been identified as an important problem in the fabrication of organic materials for photonic applications. In this work, a series of merocyanine dyes is synthesized, and their aggregation is investigated by a combination of several experimental techniques to reveal structure-p…
Porphyrin and Phthalocyanine ChemistryNonlinear Optical Materials ResearchNonlinear Optical Materials Studies
Rémi Lazzari2002-07-18OpenAlex
This paper describes a Fortran program, IsGISAXS , for the simulation and analysis of grazing-incidence small-angle X-ray scattering (GISAXS) of islands supported on a substrate. As is usual in small-angle scattering of particles, the scattering cross section is expressed in terms of an island form factor and interfer…
Iron oxide chemistry and applicationsSoil and Unsaturated FlowX-ray Diffraction in Crystallography
Prashant V. Kamat2002-07-18OpenAlex
Unique electronic and chemical properties of metal nanoparticles have drawn the attention of chemists, physicists, biologists, and engineers who wish to use them for the development of new generation nanodevices. Metal nanoparticles such as gold and silver show noticeable photoactivity under UV−visible irradiation as…
Nanocluster Synthesis and ApplicationsGold and Silver Nanoparticles Synthesis and ApplicationsAdvanced Photocatalysis Techniques
J. Słoczyński2002-07-17The Journal of Physical Chemistry B
ADVERTISEMENT RETURN TO ISSUEPREVCommentNEXTKinetics and Mechanism of MoO3 Reduction. Comments on “In Situ XAS and XRD Studies on the Formation of Mo Suboxides during Reduction of MoO3”Jerzy SłoczyńskiView Author Information Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek 8…
Catalytic Processes in Materials ScienceCatalysis and Hydrodesulfurization StudiesCatalysis and Oxidation Reactions
Péter Árkai、Alois Fenninger、Géza Nagy2002-07-17European Journal of Mineralogy
Structural and chemical evolution paths of white K-mica and chlorite from low-temperature metamorphic rocks are studied by X-ray powder diffractometry and electron probe micro-analysis in order to determine the effects of lithology expressed by bulk rock major element chemistry on the phyllosilicate reaction progress.…
Crystal Structures and PropertiesClay minerals and soil interactionsGeological and Geochemical Analysis
Barbara Pergolese、Adriano Bigotto2002-07-17Journal of Raman Spectroscopy
Abstract Surface‐enhanced Raman scattering spectra of 1‐phenyl‐5‐mercaptotetrazole (PMT) and of the corresponding sodium salt adsorbed on silver sols were recorded in the 3700–2800 and 1800–150 cm −1 regions. The SERS spectra obtained in both cases are the same, therefore it can be deduced that PMT adsorbs on silver s…
Gold and Silver Nanoparticles Synthesis and ApplicationsElectrochemical Analysis and ApplicationsSynthesis of Tetrazole Derivatives
A. Komnik、Alexander O. Gogolin2002-07-17Physical review. B, Condensed matter
We investigate energy resolved electric current from various correlated host materials under out-of-equilibrium conditions. We find that, due to a combined effect of electron-electron interactions, nonequilibrium and multiparticle tunneling, the energy resolved current is finite even above the Fermi edge of the host m…
Graphene research and applicationsQuantum and electron transport phenomenaCarbon Nanotubes in Composites
Raju P. Gupta、Michèle Gupta2002-07-17Physical review. B, Condensed matter
Tritium is an element of considerable interest in the nuclear industry. Since it is radioactive, it needs to be stored in a safe but easily recoverable manner. It is an isotope of H, and hence some of the techniques used for hydrogen storage can be employed, the safest being its storage in the form of a tritide. Howev…
Fusion materials and technologiesNuclear Materials and PropertiesHydrogen Storage and Materials
Joshua R. Williams、David C. Johnson2002-07-17Inorganic Chemistry
A new metastable binary compound with the skutterudite crystal structure has been synthesized from modulated elemental reactants, through an amorphous intermediate, using a novel low-temperature synthesis technique. The amorphous reaction intermediate undergoes nucleation at 87 degrees C, an extremely low temperature…
Intermetallics and Advanced Alloy PropertiesSemiconductor materials and interfacesPhase-change materials and chalcogenides
Jürgen Senker、E. A. Rössler2002-07-17The Journal of Physical Chemistry B
The supercooled liquid of triphenyl phosphite (TPP) transforms into a second radiographically amorphous phase by isothermal treatment in the temperature range 215−230 K. We studied the local structural arrangement of both the structural glass (phase aI) and the newly formed phase (aII) by doping triphenyl phosphite wi…
Liquid Crystal Research AdvancementsMaterial Dynamics and PropertiesGlass properties and applications