Materials Literature
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Two kinds of materials, sprayed-on crocidolite and sprayed-on amosite, containing crocidolite and amosite respectively, were treated with aqueous acetic acid solution, the pH of which was adjusted with an ammonium acetate buffer at 5, in order to remove soluble components of cement. The liquids were filtrated with a m…
硫黄ガス環境での銀の腐食を管形容器および箱形容器を用いて検討した．単体硫黄から放出される硫黄ガスは，管形容器内の銀板および箱形容器内の腐食センサの銀電極と反応する．銀板の表面に形成された腐食生成物の厚さはカソード還元法により，銀電極の表面に形成された腐食生成物の厚さはレジストメトリにより測定した．暴露後に銀板および銀電極の表面に形成された腐食生成物を分析し，硫化物であることを確認した．単体硫黄から放出される硫黄ガス環境で銀の腐食速度を決定するのは硫黄ガスの拡散である．単体硫黄から放出される硫黄ガス環境での銀の腐食速度は，腐食反応を考慮した拡散ネットワークモデルを用いて推定される．硫黄ガスは，3×10－5の反応確率に対応する一定速度…
A number of secondary and tertiary chlorin e 6-13-amides were synthesized in high yield by the action of primary and secondary amines on methylpheophorbide a under mild conditions. Unlike the secondary amides, tertiary 13-amides were shown to exist as two stereoisomers differing by orientation of the amide group plane…
We have synthesized three new 1,3-diazaazulene derivatives, namely, 2-(4′-N,N-dimethylaminophenyl)-6-nitro-1,3-diazaazulene (18, DMAPNA), 2-(4′-aminophenyl)-6-nitro-1,3-diazaazulene (19, APNA) and 2-[4′-N-(2-hydroxyethyl)aminophenyl]-6-nitro-1,3-diazaazulene (20, HEAPNA), each of them contains an amino substitute as t…
The Helium Ion Microscope (HIM) offers a new, potentially disruptive technique for nano‐metrology. This methodology presents an approach to measurements for nanotechnology and nano‐manufacturing which has several potential advantages over the traditional scanning electron microscope (SEM) currently in use in integrate…
This paper presents the results of an investigation carried out on the field of short circuit effects upon transformers electromechanical forces calculation. A time domain transformer model based on magnetomotive forces and reluctances is used. This model allows for simulating the transformer transient and steady stat…
and nitrogen-doped films were deposited by dc magnetron sputtering on substrates and the effects of antimony (Sb) and nitrogen (N) doping on microstructure and sheet resistance were investigated. After annealing at various temperatures between 100 and , phase transformations in and nitrogen-doped films were investigat…
Nanoporous silica films were prepared by sol-gel process with base,acid and base/acid two-step catalysis. Transmission electron microscope (TEM) and particle size analyzer were used to characterize the microstructure and the particle size distribution of the sols.Scanning electron microscopy (SEM),atomic force microsc…
An overview of the development and current status of the directional solidification process assisted by liquid metal cooling (LMC) has been presented in this paper. The driving force of the rapid development of the LMC process has been analyzed by considering the demands of (1) newer technologies that can provide high…
AbstractA mathematical model for the simulation of the selective catalytic reduction of NOx by ammonia in diesel exhaust is presented. The simulation of heat and mass transfer, and flow phenomena in a monolithic catalytic converter is performed by a previously published mathematical model. The chemical phenomena are d…
Polyhydroxyalkanoates (PHAs) represent an environmentally effective alternative to synthetic thermoplastics; however, current production practices are not sustainable. In this study, PHA production was accomplished in sequencing batch bioreactors utilizing real wastewaters and mixed microbial consortia from municipal…
Recent studies of the chemical modification of chitosan are discussed from the viewpoint of biomedical applications. In this review are presented the current applications of the various types of chitosan derivatives synthesized in the field of drug delivery vehicle, tissue engineering, wound dressing material, antimic…
Crystallization of biological macromolecules is becoming increasingly automated. However, for various reasons, many laboratories still perform at least some aspects of the work manually. A typical crystallization project entails two distinct steps: screening and optimization. The aim of the initial phase is to screen…
Summary The present study was undertaken to investigate the effect of Asparagus racemosus Willd. (Family: Lilliaceae), on depression in mice using tail suspension test (TST) and forced swim test (FST). Methanolic extract (50, 100 and 200 mg/kg p.o.) of A. racemosus administered orally for 14 successive days decreased…
The evolvement of preparative methods in structural studies has always been as important as the development of sophisticated equipment. Software development is also a significant part for three-dimensional (3D) structural studies using electron tomography methods (ETMs). Advanced computing makes amenable procedures th…
The equation of substance balance and the set of boundary and initial conditions determine the transient diffusion problem within the homogenized textile structure. Introducing an arbitrary behavioral functional, its first-order sensitivity expressions can be stated using the material derivative concept and both the d…
This paper describes a dynamically reconfigurable 8-function logic gate (CNT-DR8F) based on a double-gate carbon nanotube field effect transistor (DG-CNTFET). The design is based on a property specific to this device: ambivalence, enabling p-type or n-type behavior depending on the back-gate voltage. Using available m…
This paper proposes a novel method to enhance the emission characteristics of carbon nanotubes (CNTs). It is extremely possible for CNTs to adsorb moisture and other contaminants during the fabrication processes, leading to the degraded field emission characteristics. In this work, CNT emitters are activated with comm…
Commingled polypropylene (PP)/banana granules were fabricated from slivers by mixing PP fibers and banana fibers by textile equipment. By twisting the sliver, the reinforcing fibers were compacted and bonded with the molten matrix material. PP/banana composites were prepared from commingled PP/banana granules by injec…
Highly selective syntheses of tri(2,4-dimethyl-3-carbethoxypyrrolyl)-methane 8 and its dipyrrolic intermediate 6 and pyrrolic one 1 are described based on the successful correction of the wrong process for 1 in literature. Tripyrrolic compounds have attracted much attention recently and been developed in diverse field…