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New Star-Shaped Carriers Composed of β-Cyclodextrin Cores and Disulfide-Linked Poly(glycidyl methacrylate) Derivative Arms with Plentiful Flanking Secondary Amine and Hydroxyl Groups for Highly Efficient Gene Delivery

Yang Hu、Yun Zhu、Wan Tai Yang 等 4 位作者2012-12-27ACS Applied Materials & Interfaces

The biocleavable star-shaped vectors (CD-SS-PGEAs) consisting of nonionic β-cyclodextrin (β-CD) cores and disulfide-linked low-molecular-weight poly(glycidyl methacrylate) (PGMA) derivative arms with plentiful flanking secondary amine and hydroxyl groups were successfully proposed for highly efficient gene delivery. A…

Advanced biosensing and bioanalysis techniquesRNA Interference and Gene DeliveryPolymer Surface Interaction Studies

Single‐Crystalline p‐Type Zn3As2 Nanowires for Field‐Effect Transistors and Visible‐Light Photodetectors on Rigid and Flexible Substrates

Gui Chen、Zhe Liu、Bo Liang 等 11 位作者2012-12-27Advanced Functional Materials

Abstract Zn3As2 is an important p‐type semiconductor with the merit of high effective mobility. The synthesis of single‐crystalline Zn3As2 nanowires (NWs) via a simple chemical vapor deposition method is reported. High‐performance single Zn3As2 NW field‐effect transistors (FETs) on rigid SiO2/Si substrates and visible…

ZnO doping and propertiesNanowire Synthesis and ApplicationsElectronic and Structural Properties of Oxides

Current Stem Cell Delivery Methods for Myocardial Repair

Calvin C. Sheng、Li Zhou、Jijun Hao2012-12-27BioMed Research International

Heart failure commonly results from an irreparable damage due to cardiovascular diseases (CVDs), the leading cause of morbidity and mortality in the United States. In recent years, the rapid advancements in stem cell research have garnered much praise for paving the way to novel therapies in reversing myocardial injur…

Pluripotent Stem Cells ResearchElectrospun Nanofibers in Biomedical ApplicationsTissue Engineering and Regenerative Medicine

Nanoscale Radiative Heat Flow due to Surface Plasmons in Graphene and Doped Silicon

P. J. van Zwol、Stefan Thiele、Claire Berger 等 5 位作者2012-12-27Physical Review Letters

Owing to its two-dimensional electronic structure, graphene exhibits many unique properties. One of them is a wave vector and temperature dependent plasmon in the infrared range. Theory predicts that due to these plasmons, graphene can be used as a universal material to enhance nanoscale radiative heat exchange for an…

Thermal properties of materialsRadiative Heat Transfer StudiesThermal Radiation and Cooling Technologies

Role of the faecolith in modern-day appendicitis

JP Singh、JG Mariadason2012-12-27Annals of The Royal College of Surgeons of England

INTRODUCTION: The prevailing view on appendicitis is that the main aetiology is obstruction owing to faecoliths in adults and lymphoid hyperplasia in children. Faecoliths on imaging studies are believed to correlate well with appendicitis. METHODS: A retrospective chart review was conducted of 1,014 emergency appendic…

Appendicitis Diagnosis and ManagementClay minerals and soil interactionsIntraperitoneal and Appendiceal Malignancies

Mesoporous Metallic Cells: Design of Uniformly Sized Hollow Mesoporous Pt–Ru Particles with Tunable Shell Thicknesses

Hamed Ataee‐Esfahani、Jian Liu、Ming Hu 等 7 位作者2012-12-27Small

A new class of hollow mesoporous Pt-Ru and Pt particles with uniform size, named 'mesoporous metallic cells', are synthesized through a dual-templating approach using colloidal silica particles and non-ionic surfactants. To realize the full potential of mesoporous metals as electrocatalysts, the shell thicknesses, com…

Electrocatalysts for Energy ConversionMesoporous Materials and CatalysisNanoporous metals and alloys

Performance of recent and high-performance approximate density functionals for time-dependent density functional theory calculations of valence and Rydberg electronic transition energies

Miho Isegawa、Roberto Peverati、Donald G. Truhlar2012-12-27The Journal of Chemical Physics

We report a test of 30 density functionals, including several recent ones, for their predictions of 69 singlet-to-singlet excitation energies of 11 molecules. The reference values are experimental results collected by Caricato et al. for 30 valence excitations and 39 Rydberg excitations. All calculations employ time-d…

Advanced Chemical Physics StudiesSpectroscopy and Quantum Chemical StudiesMachine Learning in Materials Science

Luminescent Li-Based Metal–Organic Framework Tailored for the Selective Detection of Explosive Nitroaromatic Compounds: Direct Observation of Interaction Sites

Tae Kyung Kim、Jae Hwa Lee、Dohyun Moon 等 4 位作者2012-12-27Inorganic Chemistry

A luminescent lithium metal-organic framework (MOF) is constructed from the solvothermal reaction of Li(+) and a well-designed organic ligand, bis(4-carboxyphenyl)-N-methylamine (H(2)CPMA). A Li-based MOF can detect an explosive aromatic compound containing nitro groups as an explosophore, by showing a dramatic color…

Metal-Organic Frameworks: Synthesis and ApplicationsMolecular Sensors and Ion DetectionLuminescence and Fluorescent Materials

A Review of Translational Animal Models for Knee Osteoarthritis

Martin Gregory、Nicholas M. Capito、Keiichi Kuroki 等 6 位作者2012-12-27Arthritis

Knee osteoarthritis remains a tremendous public health concern, both in terms of health-related quality of life and financial burden of disease. Translational research is a critical step towards understanding and mitigating the long-term effects of this disease process. Animal models provide practical and clinically r…

Osteoarthritis Treatment and MechanismsKnee injuries and reconstruction techniquesSilk-based biomaterials and applications

Na2IrO3 as a Novel Relativistic Mott Insulator with a 340-meV Gap

Riccardo Comin、G. Levy、B. M. Ludbrook 等 13 位作者2012-12-27Physical Review Letters

We study ${\mathrm{Na}}_{2}{\mathrm{IrO}}_{3}$ by angle-resolved photoemission spectroscopy, optics, and band structure calculations in the local-density approximation (LDA). The weak dispersion of the Ir $5d$-${t}_{2g}$ manifold highlights the importance of structural distortions and spin-orbit (SO) coupling in drivi…

Physics of Superconductivity and MagnetismMagnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter Physics

Tailored Design of Multiple Nanoarchitectures in Metal-Cyanide Hybrid Coordination Polymers

Ming Hu、Alexei А. Belik、Masataka Imura 等 4 位作者2012-12-27Journal of the American Chemical Society

Recently, coordination polymers (CPs) with nanoscale porosity and unique property have demonstrated great potential in many applications. Encouraged by significant progress in the controlled synthesis of nanomaterials, such as metals and semiconductors, the morphologically controlled synthesis of CPs has been consider…

Metal-Organic Frameworks: Synthesis and ApplicationsMagnetism in coordination complexesMXene and MAX Phase Materials

Enhanced Photocatalytic Hydrogen Production Activities of Au-Loaded ZnS Flowers

Jiye Zhang、Yonghao Wang、Jun Zhang 等 6 位作者2012-12-27ACS Applied Materials & Interfaces

Au-nanoparticle-decorated ZnS nanoarchitectures were fabricated by a simple hydrothermal approach combined with a deposition-precipitation method. After the deposition-precipitation process, 5-nm Au nanoparticles were homogeneously dispersed on the ZnS surface. In addition, the band gap of ZnS was also narrowed by the…

Advanced Photocatalysis TechniquesQuantum Dots Synthesis And PropertiesCopper-based nanomaterials and applications

A Review of Hot-Melt Extrusion: Process Technology to Pharmaceutical Products

Mohammed Maniruzzaman、Joshua Boateng、Martin J. Snowden 等 4 位作者2012-12-27ISRN Pharmaceutics

Over the last three decades industrial adaptability has allowed hot-melt extrusion (HME) to gain wide acceptance and has already established its place in the broad spectrum of manufacturing operations and pharmaceutical research developments. HME has already been demonstrated as a robust, novel technique to make solid…

Drug Solubulity and Delivery SystemsProtein purification and stabilityCrystallization and Solubility Studies

MM/GBSA Binding Energy Prediction on the PDBbind Data Set: Successes, Failures, and Directions for Further Improvement

Paulette A. Greenidge、Christian Krämer、Jean‐Christophe Mozziconacci 等 4 位作者2012-12-27Journal of Chemical Information and Modeling

We validate an automated implementation of a combined Molecular Mechanics/Generalized Born Surface Area (MM/GBSA) method (VSGB 2.0 energy model) on a large and diverse selection of protein-ligand complexes (855 complexes). Although this data set is diverse with respect to both protein families and ligands, after caref…

Protein Structure and DynamicsComputational Drug Discovery MethodsEnzyme Structure and Function

Deep Blue Exciplex Organic Light‐Emitting Diodes with Enhanced Efficiency; P‐type or E‐type Triplet Conversion to Singlet Excitons?

Vygintas Jankus、Chien‐Jung Chiang、Fernando B. Dias 等 4 位作者2012-12-27Advanced Materials

Simple trilayer, deep blue, fluorescent exciplex organic light-emitting diodes (OLEDs) are reported. These OLEDs emit from an exciplex state formed between the highest occupied molecular orbital (HOMO) of N,N'-bis(1-naphthyl)N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine (NPB) and lowest unoccupied molecular orbital (LUMO)…

Organic Light-Emitting Diodes ResearchConducting polymers and applicationsLuminescence and Fluorescent Materials

Carbocatalysts: Graphene Oxide and Its Derivatives

Chenliang Su、Kian Ping Loh2012-12-27Accounts of Chemical Research

Graphene oxide (GO) sheets are emerging as a new class of carbocatalysts. Conventionally, researchers exfoliate graphite oxide into submicrometer-sized, water-dispersible flakes to produce these sheets. The presence of oxygen functional groups on the aromatic scaffold of GO allows these sheets to mediate ionic and non…

Advanced Photocatalysis TechniquesMetal-Organic Frameworks: Synthesis and ApplicationsCovalent Organic Framework Applications

Mussel‐Inspired Adhesive Binders for High‐Performance Silicon Nanoparticle Anodes in Lithium‐Ion Batteries

Myung‐Hyun Ryou、Jangbae Kim、Inhwa Lee 等 11 位作者2012-12-27Advanced Materials

Conjugation of mussel-inspired catechol groups to various polymer backbones results in materials suitable as silicon anode binders. The unique wetness-resistant adhesion provided by the catechol groups allows the silicon nanoparticle electrodes to maintain their structure throughout the repeated volume expansion and s…

Advancements in Battery MaterialsSupercapacitor Materials and FabricationAdvanced Sensor and Energy Harvesting Materials

Photoluminescence of Er3+: PbO - B2O3 - TeO2 Glass under 650nm Excitation Wavelength

Nurbaisyatul Ermiza Suhaimi、K. Azman、H. Azhan 等 4 位作者2012-12-27Advanced materials research

Erbium doped borotellurite glass has been identified as one of the most potential candidate for optical applications due to their excellent in physical and chemical properties. Therefore, the aim of this study is to identify the optical properties by mean of their UV-Vis and photoluminescence spectroscopic of the Er3+…

Luminescence Properties of Advanced MaterialsGlass properties and applicationsPhase-change materials and chalcogenides

Glass Anatase Nanocrystal Composites and their Crystallization Kinetics

Paramesh Gadige、K. B. R. Varma2012-12-27Advanced materials research

Nanocrystallization of anatase phase was established in BaO-TiO2-B2O3 glass system. Crystallization kinetics of anatase phase in these glasses were investigated using non-isothermal differential scanning calorimetry (DSC) at three different heating rates (10, 20 & 30 K/min). Scanning Electron Microscopy (SEM) carried…

Luminescence Properties of Advanced MaterialsGlass properties and applicationsPigment Synthesis and Properties

Optical Band Gap of Wurtzite Zinc Sulphide Doped with Lanthanum Ions

George Varughese、Sreeja R. Aswathy、K.T. Usha 等 4 位作者2012-12-27Advanced materials research

Pure and doped Zinc Sulfide (ZnS) quantum dots have attracted increasing interest from researchers working on various scientific and engineering applications in electronics, nonlinear optical devices for communication, and optical computers. In this study, ZnS nanoparticles doped with lanthanum (ZnS:La) with approxima…

Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsNonlinear Optical Materials Studies