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Aragonite crystals with unconventional morphologies

Debojit Chakrabarty、Samiran Mahapatra1999-01-01Journal of Materials Chemistry

Conventionally, the aragonite polymorph of CaCO3 possesses a ‘needle-like’ morphology. Aragonite crystals with unconventional morphologies, like ‘cauliflower’ and ‘flake’, have been synthesised by combining aqueous solutions of CaCl2 and Na2CO3 under ambient reaction conditions. The unambiguous characterisation of the…

Calcium Carbonate Crystallization and InhibitionBuilding materials and conservationChemical Synthesis and Characterization

Direct synthesis of AlSBA mesoporous molecular sieves: characterization and catalytic activities

Yinghong Yue、Antoine Gédeon、J.L. Bonardet 等 6 位作者1999-01-01Chemical Communications

Aluminium-incorporated SBA mesoporous materials have been obtained for the first time by direct synthesis; the resulting materials retain the hexagonal order and physical properties of purely siliceous SBA-15 and present higher catalytic activities in the cumene cracking reaction than AlMCM-41 materials.

Catalytic Processes in Materials ScienceZeolite Catalysis and SynthesisMesoporous Materials and Catalysis

The chemistry of methanol on the TiO2(110) surface: the influence of vacancies and coadsorbed species

Michael A. Henderson、Sary Otero-Tapia、Miguel E. Castro1999-01-01Faraday Discussions

The chemistry of methanol was explored on the vacuum annealed TiO2(110) surface, with and without the presence of coadsorbed water and oxygen, using temperature programmed desorption (TPD), high resolution electron energy loss spectroscopy (HREELS), static secondary ion mass spectrometry (SSIMS) and low energy electro…

Catalytic Processes in Materials ScienceElectronic and Structural Properties of OxidesCopper-based nanomaterials and applications

Natural fiber polymer composites: A review

D. Nabi Saheb、J. P. Jog1999-01-01Advances in Polymer Technology

Natural fiber reinforced composites is an emerging area in polymer science. These natural fibers are low cost fibers with low density and high specific properties. These are biodegradable and non-abrasive. The natural fiber composites offer specific properties comparable to those of conventional fiber composites. Howe…

Tribology and Wear AnalysisNatural Fiber Reinforced CompositesMechanical Engineering and Vibrations Research

Hypervelocity impact studies using the 2 MV Van de Graaff accelerator and two-stage light gas gun of the University of Kent at Canterbury

M. J. Burchell、M. J. Cole、J. A. M. McDonnell 等 4 位作者1999-01-01Measurement Science and Technology

The hypervelocity impact facilities of the University of Kent are described. They comprise a 2 MV Van de Graaff accelerator for the electrostatic acceleration of dust particles (mass and velocities ) and a two-stage light gas gun firing millimetre-sized particles at . Results for impact ionization studies using iron d…

High-pressure geophysics and materialsHigh-Velocity Impact and Material BehaviorElectromagnetic Launch and Propulsion Technology

Hydrophobicity changes in silicone rubbers

Henrik Hillborg、Ulf W. Gedde1999-01-01IEEE Transactions on Dielectrics and Electrical Insulation

Water repellency, high surface resistivity, vandalism resistance, low density and good processability have made silicone rubbers based on polydimethylsiloxane (PDMS) very attractive materials in housings for outdoor insulation. Their ability to recover hydrophobicity after oxida. tion or contamination is of paramount…

High voltage insulation and dielectric phenomenaSurface Modification and SuperhydrophobicitySurface Roughness and Optical Measurements

Simulation of dislocations on the mesoscopic scale. I. Methods and examples

K. W. Schwarz1999-01-01Journal of Applied Physics

Peach–Koehler theory is implemented to simulate the motion of arbitrarily configured interacting dislocations, located on arbitrary glide planes and having any allowed Burgers vector. The self-interaction is regularized by a modified Brown procedure, which remains stable and loses accuracy in a well-controlled manner…

Metal and Thin Film MechanicsMicrostructure and mechanical propertiesSurface and Thin Film Phenomena

Green chemistry

Pedro Cintas、Jean‐Louis Luche1999-01-01Green Chemistry

Although the applications of ultrasound have long been known in both industry and academy, the “green” value of the non-hazardous acoustic radiation has been recognised by synthetic and environmental chemists only recently. The chemical and physical effects of ultrasound arise from the cavitational collapse which prod…

Microwave-Assisted Synthesis and ApplicationsChemical Reactions and IsotopesUltrasound and Cavitation Phenomena

High temperature thermoelectric properties of oxide Ca9Co12O28

Siwen Li、Ryoji Funahashi、Ichiro Matsubara 等 5 位作者1999-01-01Journal of Materials Chemistry

The electrical conductivity, Seebeck coefficient and thermal conductivity of oxide Ca 9 Co 12 O 28 with Ca 2 Co 2 O 5 -type structure are 84 S cm –1 , 118 µV K –1 and 1.73 W m –1 K –1 respectively at 700 °C, and its figure of merit is 0.67×10 –4 K –1 , showing that Ca 9 Co 12 O 28 is a potential material for high temp…

Advanced Thermoelectric Materials and DevicesTransition Metal Oxide NanomaterialsMagnetic and transport properties of perovskites and related materials

Selective adsorption of Hg2+ by thiol-functionalized nanoporous silica

J. N. Brown、Louis Mercier、Thomas J. Pinnavaia1999-01-01Chemical Communications

Thiol-functionalized nanostructured silicas with uniform porosities exhibit selective complexation affinity for Hg2+, while other metal ions (Cd2+, Pb2+, Zn2+, Co3+, Fe3+, Cu2+ and Ni2+) have little or no binding ability with the adsorbents.

Covalent Organic Framework ApplicationsMesoporous Materials and CatalysisChemical Synthesis and Characterization

Review Hyperthermia and liposomes

Mo-Qi Kong1999-01-01International Journal of Hyperthermia

Hyperthermia and liposomal drug delivery are treatment modalities that have been used to treat cancer over the last two decades. More recently, the two therapies have been used together in an attempt to exploit their mutual interactions against cancer. The goal of this review is to explore the literature related to co…

Nanoparticle-Based Drug DeliveryUltrasound and Hyperthermia Applications3D Printing in Biomedical Research

Capillarity and silver nanowire formation observed in single walled carbon nanotubes

Jeremy Sloan、David M. Wright、Sam R. Bailey 等 11 位作者1999-01-01Chemical Communications

Single walled carbon nanotubes (SWNTs) exhibit similar capillarity properties to those exhibited by multiple walled carbon nanotubes (MWNTs); SWNTs, previously filled in low yield (ca. 2%) by solution chemistry techniques, can be filled in high yield (up to ca. 50%) by the liquid phase method; compositions from the KC…

Nanopore and Nanochannel Transport StudiesCarbon Nanotubes in CompositesGraphene research and applications

Electrochemical Characterization of Films of Single-Walled Carbon Nanotubes and Their Possible Application in Supercapacitors

Chongyang Liu1999-01-01OpenAlex

Films of single-wall carbon nanotubes (SWCNTs) were cast from suspensions in several solvents on the surface of a Pt or Au electrode. Cyclic voltammetry of the films in MeCN did not show well-resolved waves (as distinct from films of C_(60) prepared in a similar manner). However, the increase in the effective capacita…

Conducting polymers and applicationsSupercapacitor Materials and FabricationFuel Cells and Related Materials

Relationships within the aldehyde dehydrogenase extended family

John Perozich、Hugh B. Nicholas、Bi‐Cheng Wang 等 5 位作者1999-01-01OpenAlex

One hundred-forty-five full-length aldehyde dehydrogenase-related sequences were aligned to determine relationships within the aldehyde dehydrogenase (ALDH) extended family. The alignment reveals only four invariant residues: two glycines, a phenylalanine involved in NAD binding, and a glutamic acid that coordinates t…

Metabolomics and Mass Spectrometry StudiesEnzyme Structure and FunctionBiochemical and Molecular Research

Structural properties of magnetic Heusler alloys

A. Ayuela、Jussi Enkovaara、K. Ullakko 等 4 位作者1999-01-01OpenAlex

Magnetically driven actuator materials, such as the ternary and intermetallic Heusler alloys with composition , are studied within the density-functional theory (DFT) with the generalized gradient approximation (GGA) for the electronic exchange and correlation. The geometrical and electronic structures for the magneti…

Heusler alloys: electronic and magnetic propertiesMagnetic and transport properties of perovskites and related materialsAdvanced Thermoelectric Materials and Devices

Electrogenerated functional conjugated polymers as advanced electrode materials

Jean Roncali1999-01-01OpenAlex

Functional conjugated polymers prepared by electrochemical polymerization are reviewed. Various classes of functionalized polymers are considered such as polymers for energy storage and sensor applications, small band gap polymers and novel polymeric materials with original macromolecular structure. Particular emphasi…

Electrochemical sensors and biosensorsAdvanced Sensor and Energy Harvesting MaterialsConducting polymers and applications

Electrospun fiber mats: Transport properties

Phillip Gibson、Heidi Schreuder‐Gibson、D. Rivin1999-01-01OpenAlex

Abstract No Abstrast.

Electrospun Nanofibers in Biomedical ApplicationsSurface Modification and SuperhydrophobicityElectrohydrodynamics and Fluid Dynamics

Transition metals in supramolecular chemistry

Jean‐Pierre Sauvage1999-01-01OpenAlex

Ligand and metal control of self-assembly in supramolecular chemistry, Rolf W. Saalfrank and Bernhard Demleitner bistability in iron (II) spin-crossover systems - a supramolecular function, Jose Antonio Real fluorescent sensors for and with transition metals, Luigi Fabbrizzi Maurizo Licchelli, Piersandro Pallavicini,…

Magnetism in coordination complexes

Low temperature synthesis of nanocrystalline Y3Al5O12 (YAG) and Ce-doped Y3Al5O12 via different sol–gel methods

Michael Veith、Sanjay Mathur、Aivaras Kareiva 等 6 位作者1999-01-01OpenAlex

Nanocrystalline yttrium aluminium garnet (YAG, Y3Al5O12) and Ce-doped YAG ceramics were synthesized by two ‘soft chemistry' sol–gel processes using (i) mixtures of inorganic salts or oxides and (ii) mixtures of alkoxides of the respective elements. In the first approach the metal ions, generated by dissolving metal ox…

Photorefractive and Nonlinear OpticsSolid State Laser TechnologiesLuminescence Properties of Advanced Materials