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Interaction of a dinuclear fluorescent Cd( ii ) complex of calix[4]arene conjugate with phosphates and its applicability in cell imaging

V. V. Sreenivasu Mummidivarapu、Vijaya Kumar Hinge、Chebrolu P. Rao2014-11-04Dalton Transactions

A triazole-linked hydroxyethylimino conjugate of calix[4]arene () and its cadmium complex have been synthesized and characterized, and their structures have been established. In the complex, both the Cd(2+) centers are bound by an N2O4 core, and one of it is a distorted octahedral, whereas the other is a trigonal anti…

Molecular Sensors and Ion DetectionSupramolecular Chemistry and ComplexesLanthanide and Transition Metal Complexes

The Biosynthesis of UDP-d-FucNAc-4N-(2)-oxoglutarate (UDP-Yelosamine) in Bacillus cereus ATCC 14579

Soyoun Hwang、Zi Li、Yael Bar-Peled 等 6 位作者2014-11-04Journal of Biological Chemistry

Surface glycan switching is often observed when micro-organisms transition between different biotic and abiotic niches, including biofilms, although the advantages of this switching to the organism are not well understood. Bacillus cereus grown in a biofilm-inducing medium has been shown to synthesize an unusual cell…

Bacterial Genetics and BiotechnologyEnzyme Structure and FunctionBacillus and Francisella bacterial research

Exploring High-Pressure Structures of N2CO

Chunye Zhu、Qian Li、Qian Li 等 8 位作者2014-11-04The Journal of Physical Chemistry C

We have extensively investigated the crystal structures of N 2 CO under high pressure using the swarm structure searching technique in combination with density functional theory. Three single-bonded 3-dimensional structures with space groups of P 4 3, P 4 3 2 1 2, and P 2 1 2 1 2 are discovered. We show that the P 4 3…

High-pressure geophysics and materialsEnergetic Materials and CombustionBoron and Carbon Nanomaterials Research

Spin-orbit coupling and electronic charge effects in Mott insulators

Shan Zhu、You‐Quan Li、Cristian D. Batista2014-11-04Physical Review B

We derive the effective charge- and current-density operators for the strong-coupling limit of a single-band Mott insulator in the presence of spin-orbit coupling and show that the spin-orbit contribution to the effective charge density leads to novel mechanisms for multiferroic behavior. In some sense, these mechanis…

Magnetic and transport properties of perovskites and related materialsMultiferroics and related materialsAdvanced Condensed Matter Physics

Preparation of Risedronate Nanoparticles by Solvent Evaporation Technique

Eliška Vaculíková、Daniela Plachá、Martin Pisárčik 等 7 位作者2014-11-04Molecules

One approach for the enhancement of oral drug bioavailability is the technique of nanoparticle preparation. Risedronate sodium (Biopharmaceutical Classification System Class III) was chosen as a model compound with high water solubility and low intestinal permeability. Eighteen samples of risedronate sodium were prepa…

Bone health and treatmentsDendrimers and Hyperbranched PolymersOrganometallic Compounds Synthesis and Characterization

Enhanced Cellular Uptake of Albumin-Based Lyophilisomes when Functionalized with Cell-Penetrating Peptide TAT in HeLa Cells

Etienne van Bracht、Luuk R.M. Versteegden、Sarah Stolle 等 11 位作者2014-11-04PLoS ONE

Lyophilisomes are a novel class of biodegradable proteinaceous nano/micrometer capsules with potential use as drug delivery carrier. Cell-penetrating peptides (CPPs) including the TAT peptide have been successfully implemented for intracellular delivery of a broad variety of cargos including various nanoparticulate ph…

Nanoparticle-Based Drug DeliveryAdvanced biosensing and bioanalysis techniquesRNA Interference and Gene Delivery

Evolution Alters the Enzymatic Reaction Coordinate of Dihydrofolate Reductase

Jean E. Masterson、Steven D. Schwartz2014-11-04The Journal of Physical Chemistry B

How evolution has affected enzyme function is a topic of great interest in the field of biophysical chemistry. Evolutionary changes from Escherichia coli dihydrofolate reductase (ecDHFR) to human dihydrofolate reductase (hsDHFR) have resulted in increased catalytic efficiency and an altered dynamic landscape in the hu…

Protein Structure and DynamicsRNA and protein synthesis mechanismsEnzyme Structure and Function

Two-Photon Excitation of trans-Stilbene: Spectroscopy and Dynamics of Electronically Excited States above S1

Amanda L. Houk、Igor L. Zheldakov、Tyler A. Tommey 等 4 位作者2014-11-04The Journal of Physical Chemistry B

The photoisomerization dynamics of trans-stilbene have been well studied in the lowest excited state, but much less is known about the behavior following excitation to higher-lying electronically excited states. This contribution reports a combined study of the spectroscopy and dynamics of two-photon accessible states…

Porphyrin and Phthalocyanine ChemistryPhotochemistry and Electron Transfer StudiesPhotochromic and Fluorescence Chemistry

Thermoelastic Vibration of an Axially Moving Microbeam Subjected to Sinusoidal Pulse Heating

Ashraf M. Zenkour、Ahmed E. Abouelregal2014-11-04International Journal of Structural Stability and Dynamics

This paper develops the solution for the generalized thermoelastic vibration of an axially moving microbeam resonator induced by sinusoidal pulse heating. The system of governing equations is reduced to a novel six-order thermoelastic differential equation in terms of either deflection or temperature. The Laplace tran…

Composite Structure Analysis and OptimizationThermoelastic and Magnetoelastic PhenomenaNonlocal and gradient elasticity in micro/nano structures

Probing electronic and vibrational dynamics in molecules by time-resolved photoelectron, Auger-electron, and X-ray photon scattering spectroscopy

Kochise Bennett、Markus Kowalewski、Shaul Mukamel2014-11-04Faraday Discussions

We present a unified description for time-resolved electron and photon scattering spectroscopies from molecules prepared in nonstationary states. Signals are expressed in terms of superoperator Green's functions and a systematic procedure for treating various degrees of freedom consistently at different levels of theo…

Advanced Chemical Physics StudiesSpectroscopy and Quantum Chemical StudiesElectron and X-Ray Spectroscopy Techniques

Single-molecule analysis of the self-assembly process facilitated by host–guest interactions

Fu-Na Meng、Xuyang Yao、Yi‐Lun Ying 等 6 位作者2014-11-04Chemical Communications

The self-assembly process from a 1 : 1 to a 1 : 2 complex, facilitated by para-sulfonatocalix[6]arenes (SC6) as host and methyl viologen (MV(2+)) as guest, was analyzed at the single-molecule level through an α-hemolysin nanopore. Especially, the assembled complex structures were discriminated in real time in the mixt…

Supramolecular Chemistry and ComplexesLuminescence and Fluorescent MaterialsNanopore and Nanochannel Transport Studies

Tunable near-Infrared Luminescence of PbSe Quantum Dots for Multigas Analysis

Long Yan、Yù Zhang、Tieqiang Zhang 等 11 位作者2014-11-04Analytical Chemistry

Multigas sensing is highly demanded in the fields of environmental monitoring, industrial production, and coal mine security. Three near-infrared emission wavelengths from PbSe quantum dots (QDs) were used to analyze the concentration of three gases simultaneously through direct absorption spectroscopy, including acet…

Quantum Dots Synthesis And PropertiesGas Sensing Nanomaterials and SensorsSpectroscopy and Laser Applications

Vibrational entropy differences between mesophile and thermophile proteins and their use in protein engineering

Vincent Frappier、Rafaël Najmanovich2014-11-04Protein Science

We recently introduced ENCoM, an elastic network atomic contact model, as the first coarse-grained normal mode analysis method that accounts for the nature of amino acids and can predict the effect of mutations on thermostability based on changes vibrational entropy. In this proof-of-concept article, we use pairs of m…

Protein Structure and DynamicsLipid Membrane Structure and BehaviorEnzyme Structure and Function

Electrophoretic Migration and Particle Collisions in Scanning Electrochemical Microscopy

Aliaksei Boika、Allen J. Bard2014-11-04Analytical Chemistry

We report for the first time how electrophoretic migration of ions and charged nanoparticles (NPs) in low electrolyte concentration solutions affects positive feedback in scanning electrochemical microscopy (SECM). The strength of the electric field in the gap between either the tip and the substrate, or the tip and c…

Conducting polymers and applicationsElectrochemical Analysis and ApplicationsAnalytical Chemistry and Sensors

Glycogen-graft-poly(2-alkyl-2-oxazolines) – the new versatile biopolymer-based thermoresponsive macromolecular toolbox

Aneta Pospíšilová、Sergey K. Filippov、Anna Bogomolova 等 9 位作者2014-11-04RSC Advances

This study is focused on thermoresponsive glycogen-graft-poly(2-alkyl-2-oxazolines), a new group of nanostructured hybrid dendrimeric stimuli-responsive polymers connecting the body’s own biodegradable polysaccharidic dendrimer glycogen with the widely tuneable thermoresponsive behavior of polypeptide-analogic poly(2-…

biodegradable polymer synthesis and propertiesDendrimers and Hyperbranched PolymersBiopolymer Synthesis and Applications

Enhanced Corrosion Resistance of Co-Sn Alloy Coating with a Self-Organized Layered Structure Electrodeposited from Deep Eutectic Solvent

Jingji Zhang、Changdong Gu、Simbarashe Fashu 等 7 位作者2014-11-04Journal of The Electrochemical Society

Enhanced Corrosion Resistance of Co-Sn Alloy Coating with a Self-Organized Layered Structure Electrodeposited from Deep Eutectic Solvent, Zhang, J. L., Gu, C. D., Fashu, S., Tong, Y. Y., Huang, M. L., Wang, X. L., Tu, J. P.

Corrosion Behavior and InhibitionIonic liquids properties and applicationsElectrodeposition and Electroless Coatings

Mechanisms of Decreased Moisture Uptake in Ortho -Methylated Di(cyanate ester) Networks

Andrew J. Guenthner、Michael E. Wright、Andrew P. Chafin 等 9 位作者2014-11-04Macromolecules

Abstract Decreases of up to 50% in the moisture uptake of polycyanurate networks based on 2,2-bis(4-cyanatophenyl)propane (BADCy) and 1,1-bis(4-cyanatophenyl)ethane (LECy) were observed when analogous networks containing a single methyl group ortho- to each aryl?cyanurate linkage were prepared by reduction and acid-ca…

Polymer composites and self-healingEpoxy Resin Curing ProcessesSynthesis and properties of polymers

The effect of surgical titanium rods on proton therapy delivered for cervical bone tumors: experimental validation using an anthropomorphic phantom

Isabelle Dietlicher、Margherita Casiraghi、C. Ares 等 7 位作者2014-11-04Physics in Medicine and Biology

To investigate the effect of metal implants in proton radiotherapy, dose distributions of different, clinically relevant treatment plans have been measured in an anthropomorphic phantom and compared to treatment planning predictions. The anthropomorphic phantom, which is sliced into four segments in the cranio-caudal…

Advanced Radiotherapy TechniquesRadiation Therapy and DosimetryRadiation Shielding Materials Analysis

Photocatalytic reduction of hexavalent chromium with illuminated amorphous FeOOH

Mohammad Reza Samarghandi、Jae‐Kyu Yang、Omid Giahi 等 4 位作者2014-11-04Environmental Technology

In this study, photocatalytic reduction of hexavalent chromium [Cr(VI)] by amorphous FeOOH was investigated with variations in FeOOH dosage, pH, initial Cr(VI) concentration, purging gas, organic compounds and initial hydrogen peroxide concentration. Reduction and adsorption were identified as important processes for…

TiO2 Photocatalysis and Solar CellsAdvanced Photocatalysis TechniquesAdvanced Nanomaterials in Catalysis