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Improved Electronic Properties from Third-Order SCC-DFTB with Cost Efficient Post-SCF Extensions

Steve Kaminski、Michael Gaus、Marcus Elstner2012-11-02The Journal of Physical Chemistry A

The present work outlines the implementation and performance of two cost efficient post-SCF extensions into the third-order SCC-DFTB code. The first one, the charge model 3 (CM3), corrects for errors in bond dipoles for an improved description of molecular charge distribution as compared to the standard Mulliken parti…

Advanced Chemical Physics StudiesNonlinear Optical Materials ResearchSpectroscopy and Quantum Chemical Studies

Design and Synthesis of Lipids for the Fabrication of Functional Lipidic Cubic-Phase Biomaterials

Yazmin M. Osornio、Peter Uebelhart、Silvan Bosshard 等 6 位作者2012-11-02The Journal of Organic Chemistry

A series of novel lipids with designed functionalities were synthesized. These lipids are based on conjugation of α-amino acids and their esters, cationic, anionic, neutral, and photochromic moieties to the lipophilic 9-cis octadecenyl chains by amide, ester, thioester, or amine bonds. Because of the plasticity of lip…

Lipid Membrane Structure and BehaviorReceptor Mechanisms and SignalingPhotochromic and Fluorescence Chemistry

Placing a primary arteriovenous fistula that works—more or less known aspects, new ideas

Klaus Könner、Carlo Lomonte、Carlo Basile2012-11-02Nephrology Dialysis Transplantation

Despite the pre-operative availability of well-defined criteria to create a primary arteriovenous fistula (AVF) a high early failure/missing maturation is complained worldwide. Based on new results from basic research using numerical techniques, the authors try to guide attention to a widely neglected field in publish…

Central Venous Catheters and HemodialysisVascular Procedures and ComplicationsElectronic and Structural Properties of Oxides

Effects of the loss of the axial tyrosine ligand of the low‐spin heme of MauG on its physical properties and reactivity

Nafez Abu Tarboush、Sooim Shin、Jiafeng Geng 等 5 位作者2012-11-02FEBS Letters

MauG catalyzes posttranslational modifications of methylamine dehydrogenase to complete the biosynthesis of its protein-derived tryptophan tryptophylquinone (TTQ) cofactor. MauG possesses a five-coordinate high-spin and a six-coordinate low-spin ferric heme, the latter with His-Tyr ligation. Replacement of this tyrosi…

Magnetism in coordination complexesMetal-Catalyzed Oxygenation MechanismsHemoglobin structure and function

A quantum-mechanical study of the adsorption of prototype dye molecules on rutile-TiO 2 (110): a comparison between catechol and isonicotinic acid

Francesca Risplendi、Giancarlo Cicero、Giuseppe Mallia 等 4 位作者2012-11-02Physical Chemistry Chemical Physics

In this work we present a theoretical investigation of the attachment of catechol and isonicotinic acid to the rutile-TiO(2)(110) surface. These molecules can be considered as prototypical dyes for use in Grätzel type dye sensitised solar cells (DSCs) and are often employed as anchoring groups in both organic and orga…

TiO2 Photocatalysis and Solar CellsAdvanced Photocatalysis TechniquesQuantum Dots Synthesis And Properties

Biopolymer-Encapsulated Protein Microcapsules Spontaneously Formed at the Ionic Liquid–Water Interface

Masa‐aki Morikawa、Aki Takano、Shuichi Tao 等 4 位作者2012-11-02Biomacromolecules

Aqueous microdroplets introduced in ionic liquids (ILs) provide unique interfaces where surface-modified protein microcapsules are spontaneously formed at systemic temperature. The susceptibility of proteins to form microcapsules at the water-IL microinterface depends on protein species and is related to the number of…

Ionic liquids properties and applicationsSurfactants and Colloidal SystemsPickering emulsions and particle stabilization

A methodology to analyse and simulate mechanical characteristics of poly(2‐hydroxyethyl methacrylate) hydrogel

Weiwei Zhao、Cristina Lenardi、D.P. Webb 等 6 位作者2012-11-02Polymer International

Abstract In the present work, the mechanical properties of poly(2‐hydroxyethyl methacrylate) (PHEMA) such as ultimate strength, ultimate strain and shear modulus under compression were measured. Mathematical models for hyperelastic materials, which are often used to study rubbers or tyres and include the Mooney–Rivlin…

Polymer Nanocomposites and PropertiesElasticity and Material ModelingRheology and Fluid Dynamics Studies

Momentum transport studies from multi-machine comparisons

M. Yoshida、S. Kaye、J. E. Rice 等 15 位作者2012-11-02Nuclear Fusion

Abstract A database of toroidal momentum transport on five tokamaks, Alcator C-Mod, DIII-D, JET, NSTX and JT-60U, has been constructed under a wide range of conditions in order to understand the characteristics of toroidal momentum transport coefficients, namely the toroidal momentum diffusivity ( χ φ ) and the pinch…

Magnetic confinement fusion researchFusion materials and technologiesSuperconducting Materials and Applications

Laser arc hybrid weld microstructure in nickel based IN738 superalloy

O.T. Ola、O.A. Ojo、M.C. Chaturvedi2012-11-02Materials Science and Technology

A study of the microstructural characteristics of laser arc hybrid welded nickel based IN738 superalloy was performed. Laser arc hybrid welding produced a desirable weld profile in the alloy, similar to what is usually obtained during laser beam welding, and no cracking occurred exclusively in the fusion zone. Element…

Additive Manufacturing Materials and ProcessesHydrogen embrittlement and corrosion behaviors in metalsWelding Techniques and Residual Stresses

Phase diagram of the modified Lennard-Jones system

Yuta Asano、Kazuhiro Fuchizaki2012-11-02The Journal of Chemical Physics

An investigation of the precise determination of melting temperature in the modified Lennard-Jones system under pressure-free conditions [Y. Asano and K. Fuchizaki, J. Phys. Soc. Jpn. 78, 055002 (2009)] was extended under finite-pressure conditions to obtain the phase diagram. The temperature and pressure of the tripl…

Phase Equilibria and ThermodynamicsMaterial Dynamics and PropertiesAdvanced Thermodynamics and Statistical Mechanics

Analytical derivation of critical exponents of the dynamic phase transition in the mean-field approximation

R. A. Gallardo、O. Idigoras、P. Landeros 等 4 位作者2012-11-02Physical Review E

We have analyzed the dynamic phase transition of the kinetic Ising model in mean-field approximation by means of an analytical approach. Specifically, we study the evolution of the system under the simultaneous influence of time-dependent and time-independent magnetic fields. We demonstrate that within the approximate…

Material Dynamics and PropertiesTheoretical and Computational PhysicsComplex Systems and Time Series Analysis

How Pure Components Control Polymer Blend Miscibility

Ronald P. White、Jane E. G. Lipson、J. S. Higgins2012-11-02Macromolecules

Fundamental insight regarding what drives polymer blend immiscibility/miscibility requires understanding the enthalpic and entropic contributions to the free energy of mixing. In this modeling investigation we show that two quantities, connected to the molecular characterization parameters, serve as separate “controls…

Polymer crystallization and propertiesPhase Equilibria and ThermodynamicsMaterial Dynamics and Properties

The roles of thermalized and hot carrier diffusion in determining light yield and proportionality of scintillators

Joel Q. Grim、Qi Li、K. B. Üçer 等 7 位作者2012-11-02physica status solidi (a)

Abstract Numerical modeling and comparison to experiment in the materials for which suitable parameters have been measured confirm that three of the most important material parameters for predicting proportionality and the related host‐dependent light yield (LY) of scintillators are (i) the carrier diffusion coefficie…

Luminescence Properties of Advanced MaterialsRadiation Detection and Scintillator TechnologiesAdvanced Semiconductor Detectors and Materials

Enhancement of depth-of-field in a direct projection-type integral imaging system by a negative lens array

Lei Zhang、Yong Yang、Xing Zhao 等 5 位作者2012-11-02Optics Express

We propose a method for enhancing depth-of-field, in which the spot size on a marginal depth plane is reduced. This method is implemented in a projection-type integral imaging system using a negative lens array without a diffuser. Numerical simulation results show that the spot size is merely 5.7% of that in a convent…

Liquid Crystal Research AdvancementsPhotorefractive and Nonlinear OpticsAdvanced Optical Imaging Technologies

Solubilities, Densities, and Refractive Indices of the Ternary Systems KCl + RbCl + H2O and KCl + MgCl2 + H2O at 348.15 K

Xudong Yu、Ying Zeng、Qinghong Yin 等 4 位作者2012-11-02Journal of Chemical & Engineering Data

The solubilities of electrolyte mixtures ternary systems KCl + RbCl + H 2 O and KCl + MgCl 2 + H 2 O at 348.15 K were obtained by isothermal evaporation method. The corresponding physicochemical properties of the solution such as density and refractive index were also determined. The Scherinemakers’ wet residue method…

Thermodynamic properties of mixturesCrystallization and Solubility StudiesChemical and Physical Properties in Aqueous Solutions

High‐Temperature Operating Non‐volatile Memory of Printable Single‐Wall Carbon Nanotubes Self‐Assembled with a Conjugate Block Copolymer

Sun Kak Hwang、Jae Ryung Choi、Insung Bae 等 7 位作者2012-11-02Small

Printable non-volatile polymer memories are fabricated with solution-processed nanocomposite films of poly(styrene-block-paraphenylene) (PS-b-PPP) and single-wall carbon nanotubes (SWNTs). The devices show stable data retention at high temperatures of up to 100 °C without significant performance degradation due to the…

Organic Electronics and PhotovoltaicsAdvanced Memory and Neural ComputingConducting polymers and applications

Growth of carbon nanotubes on carbon fibers without strength degradation

Niels De Greef、Arnaud Magrez、E. Couteau 等 6 位作者2012-11-02physica status solidi (b)

Abstract Carbon nanotubes (CNTs) are grown on PAN‐based carbon fibers by means of catalytic chemical vapor deposition technique. By using catalytic thermal decomposition of hydrocarbon, CNTs can be grown in the temperature range of 650–750 °C. However, carbon fibers suffer significant damages resulting in decrease of…

Carbon Nanotubes in CompositesGraphene research and applicationsFiber-reinforced polymer composites

Direct Zircon-to-Scheelite Structural Transformation in YPO4 and YPO4:Eu3+ Nanoparticles Under High Pressure

Hongsheng Yuan、Kai Wang、Shourui Li 等 11 位作者2012-11-02The Journal of Physical Chemistry C

The high-pressure behavior of zircon-structured YPO 4 (with/without Eu 3+ doping) nanoparticles was examined at room temperature using in situ synchrotron X-ray diffraction (XRD) and photoluminescence (PL) measurements. In contrast with the reported XRD results of bulk YPO 4 upon compression, the nanoparticles showed…

Luminescence Properties of Advanced MaterialsHigh-pressure geophysics and materialsNuclear materials and radiation effects

Matrix and interaction effects on the magnetic properties of Co nanoparticles embedded in gold and vanadium

M. Ruano、M. Díaz、L. Martı́nez 等 10 位作者2012-11-02Physical Chemistry Chemical Physics

The study of the magnetic properties of Co nanoparticles (with an average diameter of 10.3 nm) grown using a gas-phase aggregation source and embedded in Au and V matrices is presented. We investigate how the matrix, the number of embedded nanoparticles (counted by coverage percentage), the interparticle interactions…

Magnetic properties of thin filmsCopper-based nanomaterials and applicationsCharacterization and Applications of Magnetic Nanoparticles

Attraction between neutral dielectrics mediated by multivalent ions in an asymmetric ionic fluid

Matej Kanduč、Ali Naji、Jan Forsman 等 4 位作者2012-11-02The Journal of Chemical Physics

We study the interaction between two neutral plane-parallel dielectric bodies in the presence of a highly asymmetric ionic fluid, containing multivalent as well as monovalent (salt) ions. Image charge interactions, due to dielectric discontinuities at the boundaries, as well as effects from ion confinement in the slit…

Material Dynamics and PropertiesGeophysical and Geoelectrical MethodsElectrostatics and Colloid Interactions