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Single-crystal diffuse scattering studies on polymorphs of molecular crystals. I. The room-temperature polymorphs of the drug benzocaine

Eric J. Chan、T. R. Welberry、D. J. Goossens 等 6 位作者2009-05-19Acta Crystallographica Section B Structural Science

The drug benzocaine (ethyl 4-aminobenzoate), commonly used as a local anaesthetic, is a bimorphic solid at room temperature. Form (I) is monoclinic P2(1)/c, while the metastable form (II) is orthorhombic P2(1)2(1)2(1). Three-dimensional diffuse X-ray scattering data have been collected for the two forms on the 11-ID-B…

Crystallography and molecular interactionsCultural Heritage Materials AnalysisX-ray Diffraction in Crystallography

High-resolution spectroscopy of weak and short-lived bands of the S1 B13u←S A1g transition of naphthalene

Kazuto Yoshida、Yosuke Semba、Shunji Kasahara 等 5 位作者2009-05-19The Journal of Chemical Physics

Rotationally resolved high-resolution spectra and fluorescence decay curves have been observed for weak and short-lived vibronic bands of the S(1) (1)B(3u) <-- S(0) (1)A(g) transition of naphthalene. Fluorescence lifetime of the vibronic band with an excess energy of 1390 cm(-1) (0(0)(0) + 1390 cm(-1) band) is remarka…

Porphyrin and Phthalocyanine ChemistryCrystal Structures and PropertiesInorganic Fluorides and Related Compounds

Racemic calcium tartrate tetrahydrate [form (II)] in rat urinary stones

A. Le Bail、Dominique Bazin、Michel Daudon 等 6 位作者2009-05-19Acta Crystallographica Section B Structural Science

The title compound, [Ca(C4H4O6)].4H2O, calcium tartrate tetrahydrate, is a new triclinic centrosymmetric form identified in rat kidney calculus. The crystal structure was determined from powder and single-crystal X-ray diffraction. The four water molecules belong to one square face of the Ca-atom coordination (a squar…

Kidney Stones and Urolithiasis TreatmentsCrystal Structures and PropertiesX-ray Diffraction in Crystallography

Carbon Nanotube Reinforced Conductors for Flexible Electronics

Jeff Tsung‐Hui Tsai、Hui-Lin Hwang2009-05-19Journal of Display Technology

This study demonstrates carbon nanotube (CNT) reinforced conductors for flexible electronics. The supreme mechanical strength of the CNT is toughened by the structure of the metal conductor. Conventional metal lines, fabricated using a screen printing technique on flexible substrates, usually suffer a great deal of st…

Carbon Nanotubes in CompositesAdvanced Sensor and Energy Harvesting MaterialsConducting polymers and applications

Facile and Fast Synthesis of Single-Crystalline Fractal Zinc Structures through a Solution Phase Reaction and Their Conversion to Zinc Oxide

Seungho Cho、Semi Kim、Hye-Jin Kim 等 5 位作者2009-05-19Langmuir

We report a novel method for the synthesis of fractal Zn structures through a solution phase reaction. An Al-film-deposited substrate was immersed in an aqueous ammonia solution containing Zn ions and maintained at 95 degrees C for 5 min. After the reaction, the Al-deposited side of the substrate was found to be cover…

ZnO doping and propertiesAdvanced Sensor and Energy Harvesting MaterialsNanomaterials and Printing Technologies

Guiding Modes of a Slab Waveguide Composed of Impedance-Matched Single Negative Materials

Kyoung-Youm Kim、Il-Min Lee、Byoungho Lee2009-05-19IEEE Photonics Technology Letters

The properties of guiding modes of a slab waveguide composed of impedance-matched epsiv (permittivity) negative and mu (permeability) negative media were investigated. This special type of waveguide supports only a single mode having polarization degeneracy: transverse-electric (TE)- and transverse-magnetic (TM)-polar…

Metamaterials and Metasurfaces ApplicationsPhotonic Crystals and ApplicationsAdvanced Antenna and Metasurface Technologies

Thermal Behavior of Aqueous Solutions of Hydroxylamine During Isothermal and Isoperibolic Decomposition in a Closed System

Maria Papadaki、Eleni Pontiki、Lijun Liu 等 5 位作者2009-05-19Journal of Chemical & Engineering Data

Hydroxylamine (HA) has been independently involved in several tragic accidents, which incurred numerous fatalities and injuries. Following these incidents, adiabatic calorimetry and computational chemistry research was conducted, suggesting potential reaction pathways of HA decomposition, but the mechanism of HA behav…

Energetic Materials and CombustionCombustion and Detonation ProcessesThermal and Kinetic Analysis

Proton Dynamics in Layered Double Hydroxides: A 1H T1 Relaxation and Line Width Investigation

Marc Reinholdt、Panakkattu K. Babu、R. James Kirkpatrick2009-05-19The Journal of Physical Chemistry C

The investigation of the dynamics of water and organic species confined in minerals or adsorbed at their surface is of significant geochemical, environmental, catalytic, biomedicine, and life’s growth interests but is poorly understood on the molecular scale. This work explores the behavior of water molecules and glut…

Mesoporous Materials and CatalysisClay minerals and soil interactionsLayered Double Hydroxides Synthesis and Applications

Development of Recycled Polypropylene Matrix Composites Reinforced with Waste Jute Caddies

Keya Das、Kuntal Adhikary、Dipa Ray 等 4 位作者2009-05-19Journal of Reinforced Plastics and Composites

Introduction of reinforcing fillers in RPP matrix help to enhance the properties of the matrix. In this study, waste jute fibers called jute caddies have been used as the filler material to RPP and their properties have been studied. The composites have been prepared by solution impregnation method. A silane coupling…

Structural Behavior of Reinforced ConcretePolymer Nanocomposites and PropertiesNatural Fiber Reinforced Composites

Length-Dependent Dielectric Polarization in Metallic Single-Walled Carbon Nanotubes

Wei Lu、Yao Xiong、Liwei Chen2009-05-19The Journal of Physical Chemistry C

A major driving force behind the research of SWNT electronic properties is their potential in nanoelectronic applications. It has been predicted and experimentally verified that the electronic properties of metallic and semiconducting SWNTs are dependent on their diameter and chirality. With the increase in the densit…

Carbon Nanotubes in CompositesGraphene research and applicationsBoron and Carbon Nanomaterials Research

Syntheses and Crystal Structures of PbSbO2Br, PbSbO2I, and PbBiO2Br

Arno Pfitzner、Patrick Pohla2009-05-19Zeitschrift für anorganische und allgemeine Chemie

Abstract Transparent single crystals of PbSbO 2 Br (green), PbSbO 2 I, and PbBiO 2 Br (yellow) were obtained by solid state reactions of stoichiometric amounts of PbO, Pn 2 O 3 ( Pn = Sb, Bi) and PnX 3 ( X = Br, I). The crystal structures were determined from single‐crystal X‐ray data. The title compounds crystallize…

Crystal Structures and PropertiesNuclear materials and radiation effectsElectronic and Structural Properties of Oxides

Electromagnetic Functional Urchin‐Like Hollow Carbon Spheres Carbonized by Polyaniline Micro/Nanostructures Containing FeCl3 as a Precursor

Ying Zhu、Jiuming Li、Meixiang Wan 等 4 位作者2009-05-19European Journal of Inorganic Chemistry

Abstract Hollow, urchin‐like carbon spheres with electromagnetic function were prepared by a carbonization process at 1200 °C under an argon atmosphere by using template‐free‐synthesized, urchin‐like, hollow spheres of polyaniline containing FeCl 3 as the precursors. The resulting hollow, urchin‐like carbon spheres no…

Supercapacitor Materials and FabricationConducting polymers and applicationsCovalent Organic Framework Applications

Delayed luminescence from collagen as arising from soliton and small polaron states

Agata Scordino、Rosaria Grasso、M. Gulino 等 9 位作者2009-05-19International Journal of Quantum Chemistry

Abstract With the aim to give more hints to a theoretical model that describes the phenomenon of delayed luminescence (DL) from biological systems as due to the collective electron states that are excited in macromolecular structures by external illumination, a spectral characterization of DL from bovine Achilles' ten…

Cellular Mechanics and InteractionsSkin Protection and AgingCollagen: Extraction and Characterization

Correlating Mechanical Properties with Aggregation Processes in Electrochemically Fabricated Collagen Membranes

Manoj Kumar、Erika F. Merschrod S.、Kristin M. Poduska2009-05-19Biomacromolecules

We show that mechanical stiffness is a useful metric for characterizing complex collagen assemblies, providing insight about aggregation products and pathways in collagen-based materials. This study focuses on mechanically robust collagenous membranes produced by an electrochemical synthesis process. Changing the dura…

Bone Tissue Engineering MaterialsMarine Biology and Environmental ChemistryCollagen: Extraction and Characterization

Pressure- and temperature-inducedM3phonon softening inReO3

Tapan Chatterji、P. G. Freeman、Mónica Jiménez‐Ruiz 等 5 位作者2009-05-19Physical Review B

We have investigated the temperature and pressure variation of the ${M}_{3}$ phonon mode of ${\text{ReO}}_{3}$ by inelastic neutron scattering on a single crystal. The energy of the ${M}_{3}$ phonon mode decreases with decreasing temperature contrary to the normal hardening behavior. The energy of this mode also decre…

High-pressure geophysics and materialsMagnetic and transport properties of perovskites and related materialsThermal Expansion and Ionic Conductivity

Butterflylike specific heat, magnetocaloric effect, and itinerant metamagnetism in(Er,Y)Co2compounds

Н. В. Баранов、A. V. Proshkin、C. Czternasty 等 6 位作者2009-05-19Physical Review B

The field-induced first-order phase transition in $({\text{Er}}_{1\ensuremath{-}x}{\text{Y}}_{x}){\text{Co}}_{2}$ with the yttrium concentration $x=0.45$ is observed to be accompanied by a butterflylike behavior and significant irreversibility of the specific heat. The coefficient $\ensuremath{\gamma}$ of the $T$-line…

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

Structure−Function Relationship of Calcium Alginate Hydrogels: A Novel Crystal-Forming Engineering

Xinping Li、Qiang Shen、Yunlan Su 等 6 位作者2009-05-19Crystal Growth & Design

Hydrogels of calcium alginate are the cross-linked networks containing a large fraction of water, which were used as the precursors of calcium carbonate (CaCO 3 ) mineralization for the first time. The well-defined geometry, the permeability, and the ion-exchange property of these pregels favored the facile fabricatio…

Bone Tissue Engineering MaterialsCalcium Carbonate Crystallization and InhibitionSupramolecular Self-Assembly in Materials

Facile Preparation of Novel Peptosomes through Complex Self-Assembly of Hyperbranched Polyester and Polypeptide

Bo Guo、Zengqian Shi、Yuan Yao 等 5 位作者2009-05-19Langmuir

This work reported for the first time a facile template-free method to prepare polypeptide-based vesicles (peptosomes) through one-step complex self-assembly of carboxyl-terminated hyperbranched polyester and cationic poly-l-lysine (PLL). The preparation of such peptosomes, named complex peptosomes (CPs) here, is very…

Advanced biosensing and bioanalysis techniquesRNA Interference and Gene DeliveryDendrimers and Hyperbranched Polymers

Activation of Hydrogen and Hexane over Pt,H-Mordenite Hydroisomerization Catalysts

Ferenc Lónyi、Anita Kovács、Ágnes Szegedi 等 4 位作者2009-05-19The Journal of Physical Chemistry C

Various Pt species were shown to be present in Pt/H-mordenite catalyst preparations containing 1.5 and 2.6 wt % Pt. Air calcination of the catalyst precursor generated large Pt 0 x metal particles (average size of >10 nm) by autoreduction, whereas a fraction of the platinum was converted to cations and oxycations, suc…

Catalytic Processes in Materials ScienceZeolite Catalysis and SynthesisCatalysis and Oxidation Reactions

Synthesis and characterization of composite films of silver nanoparticles embedded in DLC matrix prepared by plasma CVD technique

Rajib Paul、R.N. Gayen、Shamima Hussain 等 6 位作者2009-05-19The European Physical Journal Applied Physics

Composite films containing silver nanoparticles embedded in diamond-like carbon (DLC) matrix were deposited on glass substrates by using capacitatively coupled plasma (CCP) chemical vapour deposition techninique (CVD). Particle size and metal volume fraction were tailored by varying the relative amount of methane of a…

Carbon Nanotubes in CompositesDiamond and Carbon-based Materials ResearchIon-surface interactions and analysis