ChemInform Abstract: Environmental Applications of Graphene‐Based Nanomaterials
Abstract Review: a critical assessment of recent developments; 375 refs.
Materials Literature
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The Inhibition Effect of Ampicillin on Corrosion of Pure Aluminium in 3.5% NaCl Aqueous Solution
The Inhibition of the corrosion of pure aluminium in 3.5% NaCl aqueous solution using ampicillin has been studied using potentiodynamic polarization and scanning electron microscopy (SEM) techniques. It was found that the ampicillin effectively reduces the aluminium corrosion in the saline solution. Inhibition efficie…
Transgranular corrosion fatigue crack growth in age-hardened Al-Zn-Mg (-Cu) alloys
Abstract The mechanisms of transgranular corrosion fatigue in age-hardened Al-Zn-Mg (-Cu) alloys are reviewed, with an emphasis on accounting for fractographic observations. The effects of cycle frequency, solution composition, temperature, and electrode potential on crack-growth rates (and striation spacing and appea…
Organogels via Gemini Amphiphile-Graphene Oxide Nanocomposites: Self-Assembly and Symmetry Effect
<p>\n\tGraphene oxide (GO)-based composite nanostructures and nanomaterials with self-assembly structures and novel functions have received considerable interests. In this work, organogels with various nanostructures via functional cationic gemini amphiphilic compound-GO nanocomposites were designed and prepared…
Nachbehandlung an Schweißnähten
Abstract Die Erhöhung der Lebensdauer an geschweißten Konstruktionen ist eine ständige Herausforderung für Konstrukteure und Berechnungsingenieure, aber besonders auch für die Werkstatt und deren Schweißaufsicht inklusive Qualitätssicherung. Die Einführung hochfester Stähle im Stahlbau und die Notwendigkeit, die Konst…
Effect of Atmospheric Pressure Plasma and Subsequent Enzymatic Treatment on Flax Fabrics
The objective is to investigate the effect of atmospheric pressure dielectric barrier discharge (APDBD) plasma and subsequent cellulase enzyme treatment on the properties of flax fabrics. The changes of surface morphology and structure, physico-mechanical properties, hydrophilicity, bending properties, whiteness, and…
Electric field induced generation and dynamics of defects in drops of nematic cholesterics
The electric field induced dynamics and interconversion of defects in nematic cholesteric drops has been studied experimentally. It has been demonstrated that, depending on the applied voltage and the ratio of the drop radius to the equilibrium helix pitch, R / P , orientational structural interconversions of differen…
Lithium–Sulfur Batteries: Electrochemically Stable Rechargeable Lithium–Sulfur Batteries with a Microporous Carbon Nanofiber Filter for Polysulfide (Adv. Energy Mater. 18/2015)
In article number 1500738, Arumugam Manthiram and co-workers report the design of a custom separator with an activated carbon nanofiber (ACNF) filter coating on a polypropylene membrane. The entire configuration is composed of the ACNF-filter coating arranged adjacent to the sulfur cathode so that it can suppress poly…
Carbon: Two‐Dimensional Porous Carbon: Synthesis and Ion‐Transport Properties (Adv. Mater. 36/2015)
Two-dimensional porous carbon is a new class of carbon nanomaterial. Its high aspect ratio, hierarchical pore structures, and short ion-transport length make it advantageous in many applications, such as energy storage, adsorption, separation, catalysis, and sensing. J. Luo, Q.-H. Yang, and co-workers present a concep…
Finite Element-Based Brownian Dynamics Simulation of Nanofiber Suspensions Using Monte Carlo Method1
This paper presents a computational approach for simulating the motion of nanofibers during fiber-filled composites processing. A finite element-based Brownian dynamics simulation (BDS) is proposed to solve for the motion of nanofibers suspended within a viscous fluid. We employ a Langevin approach to account for both…
Note: Design and fabrication of a simple versatile microelectrochemical cell and its accessories
A microelectrochemical cell housed in an optical microscope and custom-made accessories have been designed and fabricated, which allows performing spatially resolved corrosion measurements. The cell assembly was designed to directly integrate the reference electrode close to the capillary tip to avoid air bubbles. A h…
The Effect of the Glass Phase on the Modulus of Rupture of High-Alumina Refractories
Owing to their high refractoriness and slag resistance, high-alumina refractories are widely used in the lining of steelmaking furnaces, glass furnaces and cement rotary kilns in high-temperature industries. The impurities in the raw materials react to form the glass phase, which can melt into liquid at high temperatu…
A Finite Element Study on the Effect of Curvature on the Reinforcement of Matrices by Randomly Distributed and Curved Nanotubes
A significant reinforcement effect has always been expected from the use of carbon nanotubes (CNT). Well-known experimental results, however, reveal that the theoretical reinforcement rules for straight nanotubes are not always achieved in practice. This paper reports that not only should the percentage quantity of na…
MODELLING OF UAV'S COMPOSITE STRUCTURES AND PREDICTION OF SAFETY FACTOR
The paper presents possibilities of composite materials modeling using SolidWorks enviroment on example of Unmanned Aerial Vehicle wing structure. Mechanical properties of composite materials used in UAV's and process of modeling such structures in SolidWorks are described. The research problem is CFD and strenght ana…
Effects of N concentration on electronic and optical properties of N-doped PbTiO3
The p-type N-doped PbTiO 3 with different doping concentrations have been studied by first-principles calculations. The charge density differences, band structures, density of states and optical properties have been investigated. After an oxygen atom is substituted by a nitrogen atom in the crystals, the valance bands…
The Order–Disorder Character of Owyheeite
Owyheeite, Ag<sub>1.5</sub>Pb<sub>4.43</sub>Sb<sub>6.07</sub>S<sub>14</sub>, monoclinic and pseudo-orthorhombic, is invariably intimately twinned, and its structure displays an alternation of two types of unit order-disorder (OD) layers, with layer symmetries P(2/n) 2(1)/m 2(1)/m for the thicker OD layer, and P (1) 1…
New record of an epizoic diatom, Pseudohimantidium pacificum on two species of copepods from the Indian Ocean
Introduction Adhesion of micro-organisms to the exoskeleton of crustaceans especially copepods is a very unique phenomenon and moreover, the exoskeleton of crustaceans constitute a convenient shelter for a variety of micro-organisms such as, bacteria, microalgae, protozoans, fungi etc. This phenomenon of adhesion is k…
Viscosities and their correlations with structures of Cu–Ag melts
The viscosities of a series of Cu–Ag melts in a temperature range from 1473 K to nearly liquid temperatures are measured by using an oscillating viscometer. At the same temperature, the value of viscosity increases first with silver content increasing, and reaches a maximum value at the eutectic component Cu 40 Ag 60…
Estimation of the fracture strength of a spatial beam–rod structure
The estimation of fracture strength of a spatial beam–rod structure is demonstrated in the sample of a locomotive cab. The calculated case of collision of the locomotive with an obstacle is considered. The estimation consists of three interrelated tasks. At the first stage, the finite-element model of a cab frame, tak…
Molecular Flexibility of Longer n-Alkoxy Tail Group Operated Mesomorphism
A novel homologous series RO-C 6 H 4 -CH=CH-COO-C 6 H 4 -CO-CH=CH-C 6 H 4 -OC 16 H 33 (n) para of chalconyl ester derivatives have been synthesized and studied with a view to understand and establish the effect of molecular structure on thermotropic liquid crystalline state of the substances and to provide novel liqui…