Volker M. Gorenflo、G. Schmack、Roland Vogel 等 4 位作者2001-01-11Biomacromolecules
A process for the large-scale production of 4-hydroxyvalerate (4HV)-containing biopolyesters with a new monomer composition was developed by means of high-cell-density cultivation applying recombinant strains of Pseudomonas putida and Ralstonia eutropha, harboring the PHA-biosynthesis genes phaC and phaE of Thiocapsa…
Enzyme Catalysis and ImmobilizationMicrobial Metabolic Engineering and Bioproductionbiodegradable polymer synthesis and properties
Song Gao、Gang Su、Tao Yi 等 4 位作者2001-01-11Physical review. B, Condensed matter
An unusual field-dependent slow magnetic relaxation and two distinct transitions were observed in a family of rare-earth--transition-metal complexes [Ln (bipy) $({\mathrm{H}}_{2}\mathrm{O}{)}_{4} M(\mathrm{CN}{)}_{6}] \ensuremath{\cdot}1.5$ (bipy) $\ensuremath{\cdot}4{\mathrm{H}}_{2}\mathrm{O}$ $(\mathrm{b}\mathrm{i}\…
Advanced Condensed Matter PhysicsOrganic and Molecular Conductors ResearchMagnetism in coordination complexes
J. M. Lawrence、P. S. Riseborough、C. H. Booth 等 6 位作者2001-01-11arXiv
We compare the results of measurements of the magnetic susceptibility Chi(T), the linear coefficient of specific heat Gamma(T)=C(T)/T and 4f occupation number nf(T) for the intermediate valence compounds YbXCu4 (X = Ag, Cd, In, Mg, Tl, Zn) to the predictions of the Anderson impurity model, calculated in the non-crossi…
Strongly Correlated ElectronsMaterials Science
C. Tannous、A. Fessant、J. Gieraltowski 等 7 位作者2001-01-11arXiv
The Landau-Lifshitz (L-L) equation describing the time dependence of the magnetisation vector is numerically integrated fully without any simplifying assumptions in the time domain and the magnetisation time series obtained is Fourier transformed (FFT) to yield the permeability spectrum up to 10 GHz. The non linear re…
Materials Science
F. Kirchhoff、M. J. Mehl、N. I. Papanicolaou 等 5 位作者2001-01-11arXiv
We studied the dynamical properties of Au using our previously developed tight-binding method. Phonon-dispersion and density-of-states curves at T=0 K were determined by computing the dynamical-matrix using a supercell approach. In addition, we performed molecular-dynamics simulations at various temperatures to obtain…
Materials Science
Bharat L. Newalkar、Johnson Olanrewaju、Sridhar Komarneni2001-01-11Chemistry of Materials
Titanium-substituted mesoporous SBA-15 molecular sieve has been successfully prepared at 373 K by direct synthesis under microwave−hydrothermal conditions within about 2 h. By means of X-ray diffraction, nitrogen adsorption, infrared, UV−vis diffuse reflectance, and Raman spectroscopies, a successful isomorphous subst…
Mesoporous Materials and CatalysisMetal-Organic Frameworks: Synthesis and ApplicationsCatalytic Processes in Materials Science
Hongjin Qiu、Meixiang Wan、Barry Matthews 等 4 位作者2001-01-11OpenAlex
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTConducting Polyaniline Nanotubes by Template-Free PolymerizationHongjin Qiu, Meixiang Wan, Barry Matthews, and Liming DaiView Author Information Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Bei…
Conducting polymers and applicationsCarbon Nanotubes in CompositesOrganic Electronics and Photovoltaics
Clara Santato、M. Ulmann、Jan Augustyński2001-01-11OpenAlex
The photoelectrochemical characteristics of highly transparent nanoporous WO 3 films are described. The photocurrent versus excitation wavelength spectra of these photoelectrodes exhibit a maximum close to 400 nm and a significant photoresponse to the blue part of the visible spectrum. The observed conversion efficien…
Transition Metal Oxide NanomaterialsAdvanced Photocatalysis TechniquesGas Sensing Nanomaterials and Sensors
N. Spanos、Petros G. Koutsoukos2001-01-10Langmuir
The effect of phospho- l -serine in supersaturated solutions of calcium phosphate was investigated at plethostatic conditions. Phospho- l -serine inhibited the crystal growth of hydroxyapatite {Ca 5 OH(PO 4 ) 3, HAP} by blocking the crystal growth centers through adsorption. Complete inhibition was attained with a pho…
Phosphorus and nutrient managementMinerals Flotation and Separation TechniquesCalcium Carbonate Crystallization and Inhibition
Dennis W. Prather、David Pustai、Shouyuan Shi2001-01-10Applied Optics
We study the focusing efficiency of multilevel diffractive lenses as a function of f-number. Both scalar and rigorous analyses are performed on two- and three-dimensional lenses. We show that shadowing in lenses with small f-numbers is a critical factor that limits their performance. We show further that scalar analys…
Optical Coatings and GratingsNear-Field Optical MicroscopyMetamaterials and Metasurfaces Applications
M. Matlak、Mariusz Pietruszka、E. Rówiński2001-01-10Physical review. B, Condensed matter
We propose an experimental method to confirm theoretical predictions concerning the detection of phase transitions in solids via the measurement of the chemical potential as a function of temperature. Here, as experimental evidence of the validity of these predictions, we perform indirect measurements of the chemical…
Transition Metal Oxide NanomaterialsAdvanced Memory and Neural ComputingShape Memory Alloy Transformations
Kazunari Yamaura、David P. Young、R. J. Cava2001-01-10Physical review. B, Condensed matter
Temperature-dependent transport and magnetic measurements on ${\mathrm{Sr}}_{2}{\mathrm{Y}}_{0.5}{\mathrm{Ca}}_{0.5}{\mathrm{Co}}_{2}{\mathrm{O}}_{7}$ indicate that ferromagnetism appears along with a crossover between two forms of variable-range-hopping (VRH) conductivity on cooling. Efros-Shklovskii (ES)-type VRH co…
Advanced Condensed Matter PhysicsMagnetic and transport properties of perovskites and related materialsPhysics of Superconductivity and Magnetism
Martin Friák、Mojmı́r Šob、V. Vítek2001-01-10Physical review. B, Condensed matter
A detailed theoretical study of magnetic behavior of iron along the bcc-fcc (Bain's) transformation paths at various atomic volumes, using both the local spin-density approximation (LSDA) and the generalized gradient approximation (GGA), is presented. The total energies are calculated by the spin-polarized full-potent…
Magnetic Properties and ApplicationsMagnetic Properties of AlloysMagnetic properties of thin films
Hsin‐Lung Chen、Shu-Ching Hsiao、Tsang‐Lang Lin 等 6 位作者2001-01-10Macromolecules
ADVERTISEMENT RETURN TO ISSUECommunication to the...Communication to the EditorNEXTMicrodomain-Tailored Crystallization Kinetics of Block CopolymersHsin-Lung Chen, Shu-Ching Hsiao, Tsang-Lang Lin, Kazuhiro Yamauchi, Hirokazu Hasegawa, and Takeji HashimotoView Author Information Department of Chemical Engineering, Nati…
Block Copolymer Self-AssemblyMachine Learning in Materials SciencePolymer crystallization and properties
Pierre Carrier、Laurent J. Lewis、M. W. Chandre Dharma-wardana2001-01-10arXiv
We have performed first-principles calculations of Si/SiO$_2$ superlattices in order to examine their electronic states, confinement and optical transitions, using linearized-augmented-plane-wave techniques and density-functional theory. Two atomic models having fairly simple interface structure are considered; they d…
Materials Science
V. Cataudella、G. De Filippis、G. Iadonisi2001-01-10Physical review. B, Condensed matter
The interplay of the electron-phonon interaction and of the double- and superexchange magnetic effects is analyzed in the ${\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{Ca}}_{x}{\mathrm{MnO}}_{3}$ perovskites with $0<x<0.5.$ By using an analytical variational scheme that allows us to treat the electron-phonon interac…
High-pressure geophysics and materialsMagnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter Physics
Z. Garncarek、T. Majcherczyk、D. Potoczna-Petru 等 4 位作者2001-01-10arXiv
Based on the digitized electron micrographs, we investigate a temperature evolution of Co/C film. The simple in usage quantitative characterization of the spatial disorder for systems of point objects has been employed. We show that a dominant increase of spatial inhomogeneity of cobalt phase is shifted towards the la…
Materials Science
Daniel Winn、Michael F. Doherty2001-01-09ChemInform
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” opt…
Crystallization and Solubility StudiesCrystallography and molecular interactionsX-ray Diffraction in Crystallography
E. Vainonen-Ahlgren、T. Ahlgren、J. Likonen 等 8 位作者2001-01-09Physical review. B, Condensed matter
Diffusion of deuterium in diamondlike carbon films with different Si contents deposited by a pulsed arc discharge method in deuterium atmosphere was studied. The concentration profiles of D were measured by secondary-ion-mass spectrometry and elastic-recoil-detection techniques. A model is proposed to describe the exp…
Diamond and Carbon-based Materials ResearchIon-surface interactions and analysisMetal and Thin Film Mechanics
C. S. Lue、Joseph H. Ross2001-01-09Physical review. B, Condensed matter
We report the results of a ${}^{51}\mathrm{V}$ and ${}^{69}\mathrm{Ga}$ nuclear magnetic resonance (NMR) study of ${\mathrm{Fe}}_{2}\mathrm{VGa}$ at temperatures between 4 and 450 K. The presence of magnetic antisite defects is deduced from the NMR linewidth, which displays a Curie-law temperature dependence. The abse…
Magnetic Properties and ApplicationsMagnetic properties of thin filmsIron-based superconductors research