Materials Literature
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Fouling in industrial waters supporting a number of process industries is a major issue that causes unexpected shutdowns and costly chemical or mechanical cleaning operations. Some deposits, although less common, are exceptionally troublesome. These include silica and magnesium silicate. Accumulation of these deposits…
A highly dispersed Ti-oxide species was prepared within an ultra stable Y-zeolite (USY zeolite) by an impregnation method. Moreover, the Ti-oxide loaded USY (Ti/USY) zeolite showed higher photocatalytic activity for the decomposition of N 2O in the presence of CO to produce N 2 and CO 2 than the standard TiO 2 (P-25)…
The simple cantilever is a common method to measure the bending rigidity of fabrics. How- ever, the small dimension and untwisting of the free end of yarn are the major difficulties in the simple cantilever method. In this work, a two support beam system was used to measure the bending rigidity of yarn. The yarn was t…
A systematic study of Silicon nanocrystals (Si-ncs) nonlinearities at 1550nm was carried out in view of the realization of an all optical Mach-Zehender Interferometer (MZI).
In order to check the electric field distribution of polymer line post insulator, we performed electric field simulation according to state of water droplets. Water droplets use sea water contaminant. The water droplets may appear in different forms and sizes, therefore the form is defined by the angle shape between t…
Thin films of undoped and Al- and Ag-doped ZnO thin films have been obtained by spray pyrolysis deposition. The optimised parameters of deposition for the thin films to be used in optoelectronic applications are presented in the paper. The addition of low amounts of Al and Ag ions influences the film crystallinity and…
Carbon nanotubes (CNTs) were coated on kanthal wire without using any external transition metal catalyst. It was synthesized through thermal chemical vapour deposition technique at 800°C and in a flow of gas mixtures, that is, 100 sccm nitrogen, 25 sccm hydrogen and 20 sccm acetylene. Iron and chromium oxides from the…
排ガス中に含まれる揮発性有機化合物（VOC）の無害化処理技術が強く求められるようになったが，低濃度，大風量に加え多種多様な有機化合物を安全かつ効率的に処理する上で課題が多く残されている．そこで本論文は，疎水性ゼオライトなどを担持したハニカムローター型の吸着剤を温度スイング吸着で操作するVOC濃縮装置が有効な技術であることを示すとともに，実機運転の実績に基づいて本装置の設計・操作の指針を，吸着剤ローターの選択，ローター諸元と空塔速度，処理対再生風量比，最適ローター回転数等にわたって論述する．さらに，高沸点物質の蓄積によるVOC除去性能低下への対応策として，シリカバインダーを従来より半減させた疎水性ゼオライトローターを開発するとともに…
The nano/micro-structured materials and solid substrates are novel and exciting field of research for biotechnology applications. Especially, the porous silicon (PSi) has many attractive characteristics and is expected to several applications and devices. In this study, influences of PSi with different surface structu…
Efficient photocatalysis for gas cleaning purposes requires a large accessible, illuminated active surface in a simple and compact reactor. Conventional concepts use powdered catalysts, which are nontransparent. Hence a uniform distribution of light is difficult to be attained. Our approach is based on a coarse granul…
This study aims to evaluate characteristics of hydrogen embrittlement cracking (HEC) of sensitized duplex stainless steel with simulated heat-affected zone (HAZ). The HEC of the steels, aged for 20hr at 650°C, 750°C and 800°C, were studied using a testing machine which can control the stress intensity factor, K, for t…
Parafusos corticais são submetidos a tensões de torção durante sua inserção e retirada. Portanto, um dos objetivos deste trabalho foi avaliar o comportamento mecânico dos parafusos corticais de aço inoxidável, quando submetidos a dois tipos de ensaios de torção, o manual e o realizado em uma máquina de torção. O outro…
The calculations of boundary problems by different plasticity theories give different results for many applied problems. One of these reasons is complex loading. Because, calculation of structures and installations which operate under plastic strain conditions, have been done on the basis of simplified stress-strain c…
The solution of a boundary-value problem formulated for a modified Kretschmann configuration shows that the phase speed of a surface-plasmon wave guided by the planar interface of a sufficiently thin metal film and a chiral sculptured thin film (STF) depends on the vapor incidence angle used while fabricating the chir…
This paper deals with the transient thermal analysis of carbon nanotube composites via meshless element free Galerkin method. A three-dimensional representative volume element containing single nanotube has been taken as model for these simulations. Essential boundary conditions have been enforced via penalty approach…
Synthesis of n-type Fe0.98Co0.02Si2 thermoelectric materials with dispersion of fine Ag particles was tried by mechanical milling of Fe-Si powder with AgO powder and subsequent hot pressing. The AgO phase was reduced by Si, resulting in precipitation of Ag particles, SiO2 phase and ε-FeSi phase. Most of the Ag particl…
The synergism of hydrogen bond-type ultraviolet absorbers (UVA), such as phenyl salicylate and benzotriazole type UVA, and hindered amine light stabilizers (HALS) was investigated and compared with that of benzophenone type UVA. Phenyl salicylate and benzotriazole type UVA showed a similar synergistic and antagonistic…
The deformation mechanism of the extruded cylinder of AZ31 magunesium alloy depending on a condition of temperature and loading path was studied by a multi-loading test under various temperature conditions and an observation of its microscopic structure after the plastic deformation. From the experimental results, AZ3…
The Smart Joint, developed at Cornell University, is a composite device which functions as both a structural element and shape changing mechanism. Through resistive heating, the device will provide a tip deflection on the order of 5–20% of its undeflected length, with a high specific work capability. The joint possess…
Transparent conducting oxides (TCO) with p-type semiconductivity have recently gained renewed interest for the fabrication of all-oxide transparent junctions, having potential applications in the emerging field of 'Transparent' or 'Invisible Electronics'. This kind of transparent junctions can be used as a "functional…