Phase behavior of parallel hard cylinders
8 pages, 5 figures.-- PACS nrs.: 61.30.-v, 64.70.mf, 64.30.Jk, 65.20.Jk.-- ArXiv pre-print available at: http://arxiv.org/abs/0804.0189
Materials Literature
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Thermal behaviour study of the talc
Controlled transformation Rate Thermal Analysis (CRTA) has been used to study the thermal decomposition of a talc sample. The vacuum conditions and low rate of decomposition used in the present study has enabled to understand and quantify the decomposition in terms of the different brucite and talc sheets of the prese…
Current Status of Nanotechnology Consumer Products and Nano-Safety Issues
This paper is divided into 2 parts to present a review on nanotechnology consumer products (‘Nanotech’ products) and a current status on ‘Nano-Safety’ issue. The first part focuses on up-to-date information of ‘Nanotech’ products that were already on the market as reported by Project on Emerging Nanotechnologies of th…
Investigation of Electrochemical Behaviour of Quercetin on the Modified Electrode Surfaces with Procaine and Aminophenyl in Non‐Aquous Medium
In this study, cyclic voltammetry and electrochemical ımpedance spectroscopy have been used to investigate the electrochemical behaviour of quercetin (3,3′,4′,5,7‐pentahydroxyflavone) on the procaine and aminophenyl modified electrode. The modification of procaine and aminophenyl binded electrode surface with querceti…
Marking of Cellulose Yarn by Vinyl Monomer Grafting
Marking consists of adding a mark on a product for the purpose of its identification. The use of methacrylamide (MAam) and 2-hydroxyethylmetacrylate (HEMA) as markers for cellulose yarn (flax) has been studied. Grafting of a reactive monomer onto cellulose chains has been carried out using a redox system with a chemic…
A series of novel ion-pair complexes based on TCNQ: syntheses, crystal structures and properties
Four novel ion-pair complexes, (AP)(TCNQ) (1), (CP)2[TCNQ]3 (2), (CMP)(TCNQ) (3) and (BQ)2(TCNQ)2·CH3CN (4), where AP = 4-amino-1-benzylpyridinium, CP = 1-(2-chlorobenzyl)pyridinium, CMP = 1-(4-chlorobenzyl)-3-methylpyridinium, BQ = 1-(4-bromobenzyl)quinolinium and TCNQ = 7,7,8,8-tetracyanoquinodimethane, have been co…
Use of Nanoparticles in Soil-Water Bioremediation Processes
Made available in DSpace on 2014-11-19T11:33:38Z (GMT). No. of bitstreams: 1 WOS000266564100007.pdf: 209853 bytes, checksum: b5ad82c230ea2bf3b04c40b9fd723f81 (MD5) Previous issue date: 2008
Thermal Stability and Interface Diffusion Behaviors of Electrolessly Deposited CoWP and Cu Films
Amorphous CoWP films have been studied as a capping or diffusion barrier layer to reduce Cu electromigration. However, the interface characterizations between the CoWP and Cu films have not been clarified. Thus, in this study, CoWP and Cu films are deposited by electroless plating, and their thermal stability and inte…
Full-Potential Screened KKR Calculations for Magnetism of Co<SUB>2</SUB>MnSi, Ni<SUB>2</SUB>MnAl and Ru<SUB>2</SUB>MnSi, Based on the Generalized Gradient Approximation
We present systematic ab-initio calculations for nonmagnetic (NM), ferromagnetic (FM), and antiferromagnetic (AFM) states of full-Heusler alloys (X2YZ) such as Co2MnSi (X = Co, Y = Mn, Z = Si), Ni2MnAl (X = Ni, Y = Mn, Z = Al), and Ru2MnSi (X = Ru, Y = Mn, Z = Si). The calculations are based on the all-electron full-p…
New Simple Photoemission Electron Microscope with an Energy Filter
We have developed a new Wide Acceptance Angle Electrostatic Lens (WAAEL) and applied that as display-type electron energy analyser. Our present lens achieves ±60° (1π sr) acceptance angle and has a good focusing capability with 5-times magnifications. The relative energy resolution is typically from 2 to 5×10-3 and de…
Oxygen Transport Resistant and Electrically Conductive Perovskite Coatings for Solid Oxide Fuel Cell Interconnects
Samples of undoped (LM), Sr-doped (LSM), and Ti-doped (LTM) were fabricated by conventional solid-state ceramic processing methods. The objective of Ti doping was to suppress oxygen vacancy concentration/ion transport, while doping with Sr was to enhance oxygen vacancy concentration/ion transport in relation to undope…
Electron beam irradiation induced changes in liquid-crystal compound 5CB
Abstract Electron beam irradiation studies on liquid crystal material 5CB have been carried out at a temperature where the compound exists in the isotropic liquid phase. In situ time-resolved spectroscopic characterization was carried out during the irradiation. Three different transients were observed during the 2-μs…
Microorganism-based assemblies of luminescent conjugated polyelectrolytes
A novel approach was developed for the assembly of fluorescent conjugated polyelectrolytes into tubes on the micrometre scale of tunable length using fungi as living templates.
Interfacial effects in short sisal fiber/maleated castor oil foam composites
In this study, bio-foam composites are produced using short sisal fiber as the reinforcement and modified castor oil as the matrix, respectively. The foam composites with an average cell size of 200 μm possess properties similar to those of commercial polyurethane foams. The effects of fiber loading, fiber length and…
Preparation and characterisation of nanostructured gadolinia-doped ceria tubes
In this work, nanostructured gadolinia-doped ceria tubes (GdxCe1−xO2−x/2 with x = 0.1 and 0.2) were synthesised following a very simple, high yield procedure and their properties were characterised by XRD and by electron microscopy (SEM and HRTEM). Tubes of both oxide compositions were comprised of nanocrystals that e…
Gas‐Phase Photodegradation of Decane and Methanol on TiO2: Dynamic Surface Chemistry Characterized by Diffuse Reflectance FTIR
Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) was used to study illuminated TiO 2 surfaces under both vacuum conditions, and in the presence of organic molecules (decane and methanol). In the presence of hole scavengers, electrons are trapped at Ti(III)–OH sites, and free electrons are generated…
Rapid Intergranular Corrosion of Copper in Sulfide-Polluted Salt Water
Sulfide-induced intergranular corrosion (IGC) of copper was documented in salt water under free corrosion or controlled potential. The process was promoted by the oxidizing potential and the sulfide ions. A transition potential, , of about was identified in the polarization curves in the presence of sulfide ions. Abov…
Electro-oxidation of Phenol on Polyethylenedioxythiophene Conductive-Polymer-Deposited Stainless Steel Substrate
Studies on the electrochemical oxidation of phenol are interesting because of the importance of removing phenol from contaminated water or industrial effluents. Deactivation of the anode due to the formation and adsorption of polyoxyphenylene on its surface is a common problem for a variety of electrode materials duri…
MÉTODO EXTENDIDO DE HILDEBRAND EN LA PREDICCIÓN DE LA SOLUBILIDAD DE NAPROXENO EN MEZCLAS COSOLVENTES ETANOL + AGUA
Naproxen (NAP) is a widely used non-steroidal anti-inflammatory drug; however their physicochemical properties have not been thoroughly studied. In this work, Extended Hildebrand Solubility Approach (EHSA) developed by Martin et al was applied to evaluate the solubility of NAP in ethanol + water cosolvent mixtures at…
Use of wood derivatives as doping / dispersing agents in the preparation of polypyrrole aqueous dispersions
Polystyrene sulfonic acid (PSS), lignosulfonic acid (LS) sodium salts, and carboxymethylcellulose (CMC) were used as doping/dispersing agents in the chemical polymerization of polypyrrole (Ppy). Conductivity measure-ments performed on dry Ppy pellets showed a sharp increase in conductivity when adding the anionic poly…