Materials Literature
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A carbon nanotube (CNT) is one of the promising candidates for next generation field emission materials. We have been studied emission properties of CNTs and reported that even a thick (φ∼20 nm) multi-walled nanotube (MWNT) had a small emission area of about 5×10-14 cm2, which resulted in brightness enhancement by 1-2…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Yamini Sharma, Pankaj Srivastava; Electronic Structure And Magnetic Properties Of Rhombohedral Cr…
The present study is an attempt to find out the effect of environmental corrosion on the commonly used pearlitic rail steel. The cases of corrosion of rail under Indian environment have been studied. It has been found that in marine environment both the yield strength and tensile strength decreases with increasing cor…
Dual stage hydrogen compressor with high pressure compression ability can operate efficiently using geothermal, low temperature solar, waste energy as well as combination of these energy sources. In this study, a dual stage thermal compressor system for hydrogen compression was investigated using three different hydro…
A challenge in producing wood-plastic composites (WPCs) with a high wood content using extrusion processes is the poor processability, which gives rise to inadequate properties of the resulting WPC. Plasticizing the stiff wood cell walls can be a strategic response to this challenge. Two thoughts are addressed herein…
OBJECTIVES: The aim of this study was to investigate the cyto- and genotoxicity of nanocomposites (NCs) and generation of reactive oxygen species (ROS) as a result of particle-cell interactions. MATERIALS AND METHODS: Titanium dioxide (TiO(2)-Ag) and ion-exchange resin (Res-Ag), both coated with silver (Ag), were exam…
Sodium titanates and peroxotitanates are inorganic ion-exchangers that exhibit strong affinities for a wide range of metals.These materials serve as effective ion-exchangers in strongly alkaline, neutral, and weakly acidic solutions.One of the sodium titanates, referred to as monosodium titanate, is currently used at…
The design and manufacture of lightweight polymer composites with high electrical conductivity have been a research focus in recent years. Since natural graphite (NG) has a high electrical conductivity ( 10 4 S/cm) at room temperature, it is considered an ideal candidate for manufacturing conductive polymer composites…
The gas-film levitation is a technique commonly used for contactless processing and thermophysical properties measurements of oxide and metallic glass-forming melts at elevated temperatures (up to 1650oC). For the first time, the method has been successfully applied for the levitation of oxide and metallic non-glass f…
Thanks to the chemically tunable sizes and physical (e.g. electronic, photonic and magnetic) properties, nanomaterials are recently being applied as imaging agents or spectroscopic tools to monitor cellular or biological systems. However, unfunctionalized nanomaterials have a perceived, potential risk of cytotoxicity…
Magnesium oxychloride cement (MOC) polishing bricks developed for fine polishing of porcelain stoneware tiles were produced and characterized with respect to MgO/MgCl(2), molar ratio of 6/7, 7/1, and 8/1. X-Ray diffraction analysis revealed that the main crystalline phase formed in the bricks was 5Mg(OH)(2)center dot…
An advanced method for joining fibre reinforced polymers to metallic substrates has been investigated. The solution was shown to offer improvements in strength, toughness (as indicated by the area under the load-displacement curve) and damage tolerance (residual strength after impact) under a range of test conditions.
It is well known that adhesion between glass panes and plastic interlayers is a requisite of fundamental importance for the safety and the structural integrity of laminated glass.\n\nThe level of adhesion depends on many factors: type of materials, autoclave temperature, pressure and time of bonding process, cleaning…
It is shown that the Wiener index acts as a pure topological potential able to compare relative stability of graphene layer with that of nanocone. Reactivity of fullerenic pentagonal ring is also studied.
板紙製造工程は他紙質に比べ原料中に澱粉が多量に含まれる為に，微生物の増殖によりスライム障害だけではなく，澱粉分解に伴うORP，pH，電気伝導度，カチオン要求量，濁度などの水質悪化を招き，紙力低下やウェットエンド薬品に悪影響を及ぼすことを本報で明らかにすることができた。弊社では微生物の好気と嫌気状態でのエネルギー生成経路の違いを利用し，溶存有機物が多い系でも消耗が少なく，添加した後工程まで効果を持続させるファジサイド®を用いた板紙製造工程向けの新しい微生物コントロールを提案する。すなわち，殺菌することで微生物の全体量を減少させ，空気中から水中への酸素溶解速度に対し，微生物による溶存酸素の消費速度を低く抑えることで系内を好気状態に維持…
The internal pressure of electrochemical double layer capacitors (EDLCs) using 1.0 mol dm−3 triethylmethylammonium tetrafluoroborate (TEMABF4) in acetonitrile at different voltages at 70℃ was measured and sources of the internal pressure were clarified. The PCLV (precharge at low voltage) method was used to weaken the…
We investigated the effects of carbon nanotube (CNT) functionalization with silanes and temperature on the tensile and fractural characteristics of CNT/epoxy nanocomposites. Three groups of nanocomposites were fabricated using unmodified, oxidized and silanized CNTs, each at 0.1 wt%. Tensile and fractural tests were p…
This study was undertaken to determine the possibility of using lignocellulosic material as reinforcing filler in wood plastic composite (WPC). Recycled high density polyethylene was used as the matrix and rice-husk flour as the reinforcing filler to prepare a wood-plastic composite. WPC specimens of 45×25×1.6 cm were…
Volatile oils from leaf and stem of Calotropis proc era Ait, an Asclepiadeae were analyzed for their constituents by means of gas chromatography a nd gas chromatography coupled with mass spectrometry. Nine compounds were identified in lea f, and ten in stem, which are respectively responsible for 93.9% and 86.4% of le…
The effect of nitric/sulfuric acid oxidation treatment on commercial arc-discharge multiwall carbon nanotubes was studied. Purification and structure modifications were assessed via Transmission Electron Microscopy and Thermogravimetric Analysis; while changes in adsorption properties were monitored by nitrogen and me…