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Structural effects in overcharging in complexes of hyperbranched polymers with linear polyelectrolytes

Sergey V. Lyulin、K. Karatasos、Anatoly A. Darinskii 等 5 位作者2008-01-01Soft Matter

New insight is provided by a combined theoretical and simulational approach regarding the effects of structural characteristics of the constituents, on the overcharging phenomena in complexes formed by hyperbranched polymers with linear polyelectrolytes.

RNA Interference and Gene DeliveryLuminescence and Fluorescent MaterialsDendrimers and Hyperbranched Polymers

Cyanurate-guided self-assembly of a melamine-capped oligo(p-phenylenevinylene)

Shiki Yagai、S. Kubota、Kanako Unoike 等 5 位作者2008-01-01Chemical Communications

An oligo(p-phenylenevinylene) capped on one end by a monotopic DAD-type triple hydrogen-bonding module shows distinct optical properties as well as self-organization behavior upon complexation with cyanurates with different numbers of ADA-type triple hydrogen-bonding sites.

Luminescence and Fluorescent MaterialsSupramolecular Self-Assembly in MaterialsPhotochromic and Fluorescence Chemistry

Structural Analysis by Synchrotron XRD and XAFS for Manganese-Substituted α- and β-Type Nickel Hydroxide Electrode

Masanori Morishita、Seijiro Ochiai、Tadashi Kakeya 等 8 位作者2008-01-01Journal of The Electrochemical Society

Structural Analysis by Synchrotron XRD and XAFS for Manganese-Substituted α - and β -Type Nickel Hydroxide Electrode, Morishita, Masanori, Ochiai, Seijiro, Kakeya, Tadashi, Ozaki, Tetsuya, Kawabe, Yoshiteru, Watada, Masaharu, Tanase, Shigeo, Sakai, Tetsuo

ZnO doping and propertiesSupercapacitor Materials and FabricationLayered Double Hydroxides Synthesis and Applications

UV-Resistant and Superhydrophobic Self-Cleaning Surfaces Using Sol–Gel Processes

Yonghao Xiu、Dennis W. Hess、C.P. Wong2008-01-01Journal of Adhesion Science and Technology

Inorganic superhydrophobic, low-surface energy silica coatings have been prepared using sol–gel processing with tetraethoxysilane and trifluoropropyltrimethoxysilane as precursors. When trifluoropropyltrimethoxysilane was incorporated into silica, hydrophobic trifluoropropyl groups were present on the surface, yieldin…

Surface Modification and SuperhydrophobicityAerogels and thermal insulationSilicone and Siloxane Chemistry

Antifungal effect of Calotropis procera stem bark on Epidermophyton flocosum and Trichophyton gypseum

FA Kuta2008-01-01AFRICAN JOURNAL OF BIOTECHNOLOGY

The antifugal activities of aqueous extract of Calotropics procera was determined against Epidermophyton flocosum and Tricophyton gypseum using agar diffusion techniques. The crude extract of C. procera showed activity on E. flocosum and T. gypseum at 4.0 mg/ml. The result of minimum inhibitory concentration (MIC) was…

Phytochemistry Medicinal Plant ApplicationsPhytochemical compounds biological activitiesPhytochemistry and Bioactive Compounds

Interlaminar subgrain refinement in ultrasonic consolidation

Kenneth E. Johnson2008-01-01Digital Commons - Olivet Distinctive Heritage, Scholarship, & Creativity (Olivet Nazarene University)

A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy of Loughborough University

Microstructure and mechanical propertiesMetal Forming Simulation TechniquesAdvanced Welding Techniques Analysis

Combination of biodiesel-ethanol-diesel fuel blend and SCR catalyst assembly to reduce emissions from a heavy-duty diesel engine

Shi、Xiaoyan Xiaoyan、Yu . 等 12 位作者2008-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

在这研究,减少 NOx 和微粒的努力有关系(下午) 从两个都使用 NOx overanAg/Al2O3 催化剂和 biodiesel-ethanol-diesel 燃料的乙醇选择的催化减小(SCR ) 的一个柴油发动机的排出物相配(柴油机) 在一张引擎凳子上,测试被讨论。与柴油相比,柴油机的使用由于下午的可溶的器官的部分(SOF ) 的增加增加了下午排出物 14% ,但是它极大地减少了 Bosch 烟数字由 60%80% 根据从欧洲静止周期(转换字符) 的 13 模式测试的结果测试。SCR 催化剂在由乙醇的 NOx 减小是有效的,并且 NOx 变换是约 73% 。全部的烃(THC ) 和公司排出物在 NOx 过程的 SCR 期间显…

Advanced Combustion Engine TechnologiesCatalytic Processes in Materials ScienceBiodiesel Production and Applications

Os polimorfos de carbonato de cálcio: uma síntese fácil de aragonita

K.E. Bessler、Laécio C. Rodrigues2008-01-01Química Nova

AN EASY SYNTHESIS OF ARAGONITE.Aragonite is a metastable polymorph of calcium carbonate.The calcareous exoskeletons of some organisms like corals or molluscs consist essentially of aragonite.The questions of how, and why these organisms prefer the thermodynamically unstable aragonite for the construction of their hard…

Clay minerals and soil interactionsIron oxide chemistry and applicationsLayered Double Hydroxides Synthesis and Applications

Localized Corrosion Susceptibility of Supermartensitic Stainless Steel in Welded Joints

José M. Aquino、Carlos Alberto Della Rovere、S.E. Kuri2008-01-01CORROSION

Supermartensitic stainless steels is known for its better weldability and corrosion resistance compared to the conventional martensitic, mainly due to its lower carbon content. This enables the production of welded joints with superior resistance to hydrogen embrittlement and to sensitization, particularly in the heat…

Microstructure and Mechanical Properties of SteelsHydrogen embrittlement and corrosion behaviors in metalsWelding Techniques and Residual Stresses

A meso-meso directly linked octameric porphyrin square

Naoki Aratani、Atsuhiro Osuka2008-01-01Chemical Communications

A meso-meso directly linked cyclic octameric porphyrin square was synthesized via stepwise Suzuki-Miyaura cross coupling reactions, and its ability to capture a guest molecule in the inside cavity has been confirmed.

Supramolecular Chemistry and ComplexesPorphyrin and Phthalocyanine ChemistryLuminescence and Fluorescent Materials

Towards continuous processes for the synthesis of precursors of amorphous Si/B/N/C ceramics

Markus Weinmann、Matthias Kroschel、Thomas Jäschke 等 9 位作者2008-01-01Journal of Materials Chemistry

The development of a process for the continuous synthesis of Cl3SiNMeBCl2 (DMTA) as a single-source precursor of highly durable Si/B/N/C ceramics is reported. The process is based on a series of gas phase reactions starting from silicon tetrachloride and methylamine. Cl3SiNHMe (TSMA), which is initially formed, is sub…

Advanced ceramic materials synthesisSemiconductor materials and devicesMXene and MAX Phase Materials

Spray Pyrolysis Deposition of Electrolyte and Anode for Metal-Supported Solid Oxide Fuel Cell

Yongsong Xie、Roberto Neagu、Ching-Shiung Hsu 等 5 位作者2008-01-01Journal of The Electrochemical Society

Metal-supported solid oxide fuel cells (SOFCs) offer many advantages, including increased robustness, improved thermal shock resistance, and decreased cost. However, fabricating metal-supported SOFCs using conventional techniques is both very difficult and very costly. In this study, two processes of spray pyrolysis d…

Electrocatalysts for Energy ConversionAdvancements in Solid Oxide Fuel CellsFuel Cells and Related Materials

Is YSZ stable in the presence of Cu?

J.C. Ruiz-Morales、Jesús Canales‐Vázquez、David Marrero‐López 等 7 位作者2008-01-01Journal of Materials Chemistry

XRD, XPS and electrochemical studies show clear evidence of chemical interaction under oxidising and reducing conditions between YSZ and CuO, both components of a widely studied anode material for high performance solid oxide fuel cells (SOFCs). The aim of this work is to identify and verify the nature of this interac…

Advancements in Solid Oxide Fuel CellsMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides

Synthesis and characterization of novel porphyrin Schiff bases

Lei Wang、Yaqing Feng、Jin-Qiang Xue 等 4 位作者2008-01-01Journal of the Serbian Chemical Society

Novel porphyrin Schiff bases were synthesized by a simple Schiff base condensation in refluxing toluene between 5-(4-aminophenyl)-10,15,20-triphe?nylporphyrin (ATTP) 3 and styryl aldehydes 4-6 or p-halobenzaldehydes 7-9. The newly synthesized porphyrin Schiff bases were characterized on the basis of their chemical pro…

Porphyrin and Phthalocyanine ChemistryPhotochemistry and Electron Transfer StudiesOrganic Chemistry Cycloaddition Reactions

ON THE STUDY OF LEFT-HANDED COPLANAR WAVEGUIDE COUPLER ON FERRITE\R\NSUBSTRATE

Mahmoud A. Abdalla、Zhirun Hu2008-01-01Progress In Electromagnetics Research Letters

This paper introduces a 3 dB tunable symmetric left handed coupled line coupler implemented on ferrite substrate. The proposed coupler is realized in LH coplanar waveguide configuration constructed using interdigital capacitors and meandered line inductors. The analytical analysis and the numerical verification of the…

Metamaterials and Metasurfaces ApplicationsMicrowave Engineering and WaveguidesAdvanced Antenna and Metasurface Technologies

Electrical characterization and impedance response of lanthanum doped barium titanate ceramics

Dragan Mančić、Vesna Paunović、Mirjana Vijatovic 等 5 位作者2008-01-01Science of Sintering

The dielectric permittivity and dissipation factor of La-doped and undoped BaTiO3 were investigated as a function of frequency and temperature. The impedance response was used to study the electrical properties of La-doped BaTiO3 over the temperature range from room temperature (RT) to 350?C. La-doped and undoped BaTi…

Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesDielectric materials and actuators

Investigation of the factors favouring solid state [2 + 2] cycloaddition reactions; the [2 + 2] cycloaddition reaction of coumarin-3-carboxylic acid

Mary F. Mahon、Paul R. Raithby、Hazel A. Sparkes2008-01-01CrystEngComm

The solid state [2 + 2] cycloaddition reaction of coumarin-3-carboxylic acid, 1a, has been investigated using both single-crystal and powder X-ray diffraction techniques which established the structure of the dimerized product, 1b. The transformation was achieved by irradiation with a 150 W mercury lamp for 3 d. Monom…

Crystal structures of chemical compoundsCrystallography and molecular interactionsX-ray Diffraction in Crystallography

Facile and adaptable synthesis method of mesostructured silica thin films

U‐Hwang Lee、Jae‐Hun Yang、Hyunju Lee 等 6 位作者2008-01-01Journal of Materials Chemistry

By employing high speed spin coating for the film formation and high temperature (80 °C) drying and aging, we developed a synthesis procedure for mesostructured silica thin films that can reproducibly produce up to eight different pore morphologies, including a rhombohedral (Rm), a centered rectangular (c2mm), two wor…

Catalytic Processes in Materials SciencePhotonic Crystals and ApplicationsMesoporous Materials and Catalysis

Incorporation of Gold into Porous Anodic Alumina Formed on an Al–Au Alloy

S.J. Garcia-Vergara、M. Curioni、F. Roeth 等 7 位作者2008-01-01Journal of The Electrochemical Society

An Au gold alloy is employed to investigate the incorporation of a nonoxidized alloying element into porous anodic alumina films formed in phosphoric acid and sulfuric acid electrolytes. Gold is shown to enrich in the alloy in the initial stages of film growth, when a gold-free film is formed. On sufficient enrichment…

Concrete Corrosion and DurabilityAnodic Oxide Films and NanostructuresSmart Materials for Construction