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Electron Attachment to the Guanine–Cytosine Nucleic Acid Base Pair and the Effects of Monohydration and Proton Transfer

Ashutosh Gupta、Heather M. Jaeger、K. Compaan 等 4 位作者2012-04-24The Journal of Physical Chemistry B

The guanine-cytosine (GC) radical anion and its interaction with a single water molecule is studied using ab initio and density functional methods. Z-averaged second-order perturbation theory (ZAPT2) was applied to GC radical anion for the first time. Predicted spin densities show that the radical character is localiz…

Advanced biosensing and bioanalysis techniquesDNA and Nucleic Acid ChemistryEnzyme Structure and Function

Transforming Frozen Self‐Assemblies of Amphiphilic Block Copolymers Into Dynamic pH‐Sensitive Micelles

Fabien Dutertre、Olivier Boyron、Bernadette Charleux 等 5 位作者2012-04-24Macromolecular Rapid Communications

The self-assembly in water of an amphiphilic P(nBMA(50%) -stat-DMAEMA(50%) )(100)-b-PDMAEMA(235) diblock copolymer based on hydrophilic dimethylaminoethylmethacrylate (DMAEMA) units and hydrophobic n-butylmethacrylate (nBMA) ones is reported. DMAEMA units have been incorporated into the hydrophobic block of this copol…

Advanced Polymer Synthesis and CharacterizationSurfactants and Colloidal SystemsPolymer Surface Interaction Studies

Precise Synthesis of Clickable Poly(n-hexyl isocyanate)

Toshifumi Satoh、Ryosuke Ihara、Daisuke Kawato 等 9 位作者2012-04-24Macromolecules

Well-defined clickable poly( n -hexyl isocyanate) (PHIC) with an azido or alkyne end group as rod-like building block has been prepared by the living coordination polymerization using organotitanium catalysts. The obtained clickable PHIC was subjected to the Cu-catalyzed azide/alkyne cycloaddition for the synthesis of…

Advanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and propertiesClick Chemistry and Applications

Environmentally Friendly Photocatalytic Synthesis of Porphyrin/Ag Nanoparticles/Reduced Graphene Oxide Ternary Nanohybrids Having Superior Catalytic Activity

Haiyan Li、Yingwei Zhang、Guohui Chang 等 9 位作者2012-04-24ChemPlusChem

Abstract This study demonstrates the first synthesis of novel organic/inorganic ternary nanohybrids of tin(IV) prophyrin (SnPor), Ag nanoparticles (AgNPs), and reduced graphene oxide (RGO) by an environmentally friendly phtotcatalytic process using SnPor as a photocatalyst for the reduction of both GO and AgI. The nan…

Advanced Photocatalysis TechniquesNanomaterials for catalytic reactionsAdvanced Nanomaterials in Catalysis

Predicting the outcomes of tennis matches using a low-level point model

Demetris Spanias、William J. Knottenbelt2012-04-24IMA Journal of Management Mathematics

Quantitative analysis in tennis has become more important in recent years with the introduction of online betting exchanges. In this paper, the probability of winning a match in tennis is derived hierarchically starting from the probability of each player winning a point on their serve. Under the assumption that each…

Textile materials and evaluationsSports Analytics and PerformanceSports Dynamics and Biomechanics

Plasma‐enhanced Chemical Vapor Deposition of Aluminum Oxide Using Ultrashort Precursor Injection Pulses

G. Dingemans、M. C. M. van de Sanden、W. M. M. Kessels2012-04-24Plasma Processes and Polymers

Abstract An alternative plasma‐enhanced chemical vapor deposition (PECVD) method is developed and applied for the deposition of high‐quality aluminum oxide (AlOx) films. The PECVD method combines a continuous plasma with ultrashort precursor injection pulses. We demonstrate that the modulation of the precursor flow in…

ZnO doping and propertiesSemiconductor materials and devicesThin-Film Transistor Technologies

Thiol-Based Redox Modulation of a Cyanobacterial Eukaryotic-Type Serine/Threonine Kinase Required for Oxidative Stress Tolerance

Alejandro Mata‐Cabana、Mario García‐Domínguez、Francisco J. Florencio 等 4 位作者2012-04-24Antioxidants and Redox Signaling

AIMS: Protein phosphorylation is a principal signaling mechanism that mediates regulation of enzymatic activities, modulation of gene expression, and adaptation to environmental changes. Recent studies have shown a ubiquitous distribution of eukaryotic-type Serine/Threonine protein kinases in prokaryotic genomes, thou…

Bacterial Genetics and BiotechnologyPhotosynthetic Processes and MechanismsEnzyme Structure and Function

Axial Ligand and Spin‐State Influence on the Formation and Reactivity of Hydroperoxo–Iron(III) Porphyrin Complexes

Alicja Franke、Christoph Fertinger、Rudi van Eldik2012-04-24Chemistry - A European Journal

The present study focuses on the formation and reactivity of hydroperoxo-iron(III) porphyrin complexes formed in the [Fe(III)(tpfpp)X]/H(2)O(2)/HOO(-) system (TPFPP=5,10,15,20-tetrakis(pentafluorophenyl)-21H,23H-porphyrin; X=Cl(-) or CF(3) SO(3)(-)) in acetonitrile under basic conditions at -15 °C. Depending on the se…

Photosynthetic Processes and MechanismsPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms

Effect of Head‐Group Chemistry on Surface‐Mediated Molecular Self‐Assembly

April D. Jewell、Samuel J. Kyran、Daniel Rabinovich 等 4 位作者2012-04-24Chemistry - A European Journal

Surface molecular self-assembly is a fast advancing field with broad applications in sensing, patterning, device assembly, and biochemical applications. A vast number of practical systems utilize alkane thiols supported on gold surfaces. Whereas a strong Au-S bond facilitates robust self-assembly, the interaction is s…

Quantum Dots Synthesis And PropertiesMolecular Junctions and NanostructuresNanocluster Synthesis and Applications

Molecular Metal Oxide Cluster-Surface Modified Titanium(iv) Dioxide Photocatalysts

Michael Nolan、Anna Iwaszuk、Hiroaki Tada2012-04-24Australian Journal of Chemistry

The surface modification of TiO2 with molecular sized metal oxide clusters has recently been shown to be a promising approach for providing TiO2 with visible-light activity and/or improved UV activity. This short review summarizes the effects of the surface modification of TiO2 with the oxides of iron and tin selected…

TiO2 Photocatalysis and Solar CellsAdvanced Photocatalysis TechniquesCatalytic Processes in Materials Science

Injectable In Situ Forming Microparticles: A Novel Drug Delivery System

EA Yapar、Özge Inal、Yalçın Özkan 等 4 位作者2012-04-24Tropical Journal of Pharmaceutical Research

Pharmaceutical formulation research has recently been focusing on delivery systems which provide long therapeutic effects and reduced side effects, and involving simplified production stages and facilitated application process. In situ forming microparticle (ISM) systems, one of the latest approach in this field, offe…

Nanoparticle-Based Drug DeliveryDrug Solubulity and Delivery SystemsAdvanced Drug Delivery Systems

Substitutional Mechanism of Ni into the Wide-Band-Gap Semiconductor InTaO4 and Its Implications for Water Splitting Activity in the Wolframite Structure Type

Andrew C. Malingowski、Peter W. Stephens、Ashfia Huq 等 6 位作者2012-04-24Inorganic Chemistry

The mechanism of Ni substitution into the oxide semiconductor InTaO(4) has been studied through a combination of structural and spectroscopic techniques, providing insights into its previously reported photoactivity. Magnetic susceptibility and X-ray absorption near-edge spectroscopy (XANES) measurements demonstrate t…

Advanced Photocatalysis TechniquesLuminescence Properties of Advanced MaterialsGa2O3 and related materials

Emission properties of an oscillating point dipole from a gold Yagi-Uda nanoantenna array

S. V. Lobanov、T. Weiss、Daniel Drégely 等 6 位作者2012-04-24Physical Review B

We investigate numerically the interaction of an oscillating point dipole with a periodic array of optical Yagi-Uda nanoantennas in the weak coupling limit. A very strong near-field enhancement of the dipole emission by the resonant plasmon mode in the feed element is predicted in this structure. It is shown that the…

Plasmonic and Surface Plasmon ResearchOptical Coatings and GratingsNear-Field Optical Microscopy

Core/Shell PBA/PMMA‐PGMA Nanoparticles to Enhance the Impact Resistance of UV‐Cured Epoxy Systems

Mohamed Naguib、Sabrina Grassini、Marco Sangermano2012-04-24Macromolecular Materials and Engineering

Abstract Crosslinked core/shell PBA/PMMA‐PGMA particles are prepared by emulsion polymerization and dispersed into a UV‐curable cycloaliphatic epoxy resin in the range of 5–15 wt%. The presence of the particles does not significantly affect the UV curing process: a slight decrease of final epoxy group conversion is at…

Polymer composites and self-healingEpoxy Resin Curing ProcessesPhotopolymerization techniques and applications

A unified approach for numerical calculation of space-dependent kinetic equation

Yuichiro Ban、Tomohiro Endo、Akio Yamamoto2012-04-24Journal of Nuclear Science and Technology

A unified numerical method based on the factorization approach is developed to solve the space-dependent neutron kinetic equation. Various numerical methods for solving the space-dependent kinetic equation have been developed so far. These methods can be classified into two categories, i.e., the direct and the factori…

Nuclear reactor physics and engineeringNuclear Materials and PropertiesNuclear Physics and Applications

Occurrence of the marine yellow‐green algae Vaucheria velutina C. Agardh and Vaucheria longicaulis Hoppaugh (Xanthophyceae: Vaucheriaceae) in Auckland, New Zealand

MD Wilcox2012-04-24New Zealand Journal of Marine and Freshwater Research

Abstract The yellow‐green algae Vaucheria velutina and Vaucheria longicaulis are identified using morphological characters of fertile material from the eastern coastline of Auckland. The former species occurs in extensive low intertidal beds on sheltered, muddy shores. The latter species was found in Orakei Basin, and…

Marine and coastal plant biologyDiatoms and Algae Research

Dielectric Behavior of Some Small Ketones as Ideal Polar Molecules

Toshiyuki Shikata、Nao Yoshida2012-04-24The Journal of Physical Chemistry A

The dielectric behaviors of some small symmetric ketone molecules, including acetone, 3-pentanone, cyclopentanone, 4-heptanone, and cyclohexanone, were investigated as a function of temperature (T) over a wide frequency range from 50 MHz (3.14 × 10(8) s(-1), in angular frequency) to 3 THz (1.88 × 10(13) s(-1)). The te…

Advanced Chemical Physics StudiesSolid-state spectroscopy and crystallographyMolecular Spectroscopy and Structure

Two new C13-norisoprenoids fromSolanum lyratum

Xi‐Dian Yue、Guiwu Qu、Bafang Li 等 6 位作者2012-04-24Journal of Asian Natural Products Research

Two new C(13)-norisoprenoids, named lyratols E and F (1-2), were isolated from the whole plant of Solanum lyratum Thunb, and their structures were elucidated by extensive spectroscopic analyses. In vitro, two new compounds were found to show significant cytotoxicity against selected cancer cells including P-388 and HT…

Potato Plant ResearchPhytochemical Studies and BioactivitiesPhytochemistry and Bioactive Compounds

BMP ‐2 and bFGF release and in vitro effect on human osteoblasts after adsorption to bone grafts and biomaterials

Florian G. Draenert、A. Nonnenmacher、Peer W. Kämmerer 等 5 位作者2012-04-24Clinical Oral Implants Research

OBJECTIVES: Combination of scaffolds and growth factors is a promising option for several clinical problems in bone biomaterials. Simplified growth factor loading by adsorption from aqueous solution is one important option for this technology. We evaluated the adsorption followed by PBS rinsing, release and biological…

Bone Tissue Engineering MaterialsHydrogels: synthesis, properties, applicationsCollagen: Extraction and Characterization

Structure of an Enzyme-Derived Phosphoprotein Recognition Domain

Christopher A. Johnston、Chris Q. Doe、Kenneth E. Prehoda2012-04-24PLoS ONE

Membrane Associated Guanylate Kinases (MAGUKs) contain a protein interaction domain (GK(dom)) derived from the enzyme Guanylate Kinase (GK(enz)). Here we show that GK(dom) from the MAGUK Discs large (Dlg) is a phosphoprotein recognition domain, specifically recognizing the phosphorylated form of the mitotic spindle or…

Microtubule and mitosis dynamicsCellular transport and secretionEnzyme Structure and Function