Materials Literature
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We have successfully printed a thin film of colloidal cadmium selenide (CdSe) quantum dots onto a transparent organic semiconductor, forming a unique solar cell that generates more voltage than previously expected for donor/acceptor photovoltaics. Article not available.
The quasi-static and dynamic mechanical behaviors of ultrafine grained (UFG) oxygen free high conductivity copper (OFHC Cu) were compared with those of its coarse grained counter- part. A special focus was made on examining the effect of a UFG structure on the mechanical re- sponse under quasi-static and dynamic loadi…
Semiconductor thin films are pervasive in advanced technological devices. For example, the active region in a quantum cascade laser contains films of direct bandgap semiconductors with thicknesses of 1–10 nm [1]. Superlattices, periodic materials that contain films of alternating species with thicknesses as small as 1…
Nitrogen rich glasses in the systems Ca-Si-O-N, Sr-Si-O-N and AE-Ca-Si-O-N (AE = Mg, Sr and Ba) have been prepared using a novel glass-synthesis route. The limits of the glass forming regions in the Ca and Sr systems and substitution limits in the AE-Ca-Si-O-N systems have been determined and physical properties of th…
The model of the vacancies formation in a crystal grown up from melt, as a result of its leaky packing at crystallization is offered. The dependence of the vacancies concentration from growth rate of an ingot from melt (vc), a gradient of temperatures at the front of crystallization (G) and parameters of diffusion and…
One of the approaches for micro/nanoscale heat transfer is to use the Boltzmann transport equation, which reduces to the equation of phonon radiative transfer under the relaxation time approximation. Transfer and generation of entropy are processes inherently associated with thermal energy transport, yet little has be…
Nowadays, glass and porcelain insulators are being systematically changed by polymeric insulators, because of its advantages, as easy installation, reduced weight, low cost in the construction and transportation, and resistance to the vandalism. However polymeric insulators have disadvantages, as the difficulty about…
Government and commercial decommissioning and remediation activities at nuclear sites and facilities often generate in large volumes and mass radioactive waste that is of low activity. In large part, the low activity radioactive waste generated from decommissioning and remediation activities are below regulatory limit…
This report describes the quality assessment of Blind Via Holes (BVHs) of Printed Wiring Boards (PWBs) drilled by a CO2 laser using Cu-direct drilling. In the Cu-direct drilling method, the copper foil and the build-up layer are melted at the same time, and the surface is treated to increase the laser energy absorbed…
嫌気性排水処理システムは，省スペース，省エネルギー等の特徴を有するとともに，バイオガスからエネルギー回収を行うことで，CO2削減にも寄与する排水処理システムである。昨今の燃料費高騰に対し，処理コストの低減にもつながる処理法である。パルプ製造過程で発生する高濃度有機性排水の臭気ドレン排水に対し，嫌気性処理システムの適用を検討した。良好な検討結果を得て，王子製紙富岡工場内に設備を建設し，約1年間の運転実績を得た。設備は，油分分離槽，酸生成槽，およびグラニュール汚泥を充填したEGSB反応槽等にて構成される。反応槽は，CODCr容積負荷15kg／m3・dにて設計し，臭気ドレン排水を2倍希釈して処理する計画とした。臭気ドレン排水はCODCr…
The change in electrical conductivity of Ni-YSZ cermet used for the solid oxide fuel cell (SOFC) anode was investigated under methane, ethylene and n-butane feeding. Rectangular-shaped pellets have been prepared and exposed to gaseous mixtures including hydrocarbons and nitrogen with or without steam at 750 °C. In the…
1H-NMR and magnetic susceptibility χ( T ) are measured on Zn x Cu 4- x (OH) 6 Cl 2 (0 ≤ x ≤ 1), whose end member at x = 0 is a distorted pyrochlore- and x = 1 is a kagomélattice spin frustrated antiferromagnet. For x = 0 compound, NMR spectra broaden abruptly at T N = 18 K, and a spin - lattice relaxation rate shows l…
Computer simulations have become a mature and useful method in studies of molecules of life. As a part of structural bioinformatics carefully planned numerical experiments provide unique data on dynamics and properties of biomolecules. In this article a review of the state of art of molecular dynamics (MD) studies is…
The values of the specific retention volumes of non-polar and polar adsorbates chromatographed on the ordered mesoporous silica adsorbents (MCMs) were determined under their infinite dilution conditions. Two methods were employed for the calculation of the standard free energy of adsorption, ∆Gads, of the chromatograp…
Gamma spectrometry is widely used to determine the radioactive content of waste drums. However, the results of such surveys often result in large numbers of limit-of-detection (LOD) results. In this paper we will show how simple statistical methods can be used to obtain useful information on the average drum activitie…
A key input to calculation of the structural integrity of the RPV by the brittle fracture criterion is known to be the fracture toughness of a material. When calculating resistance of RPV to brittle fracture it was taken earlier that fracture toughness, KJC, depends only on temperature, and does not depend on thicknes…
Radiative lifetime of chemically synthesized colloidal CdSe/CdS core/shell quantum dots is measured. Influence of the core size on the electron-hole pair separation is analyzed. A long radiative lifetime and the existence of electron-hole pair separation suggest high potential of these dots as gain material to achieve…
Les liquides ioniques a temperature ambiante sont des solvants potentiellement interessants pour le traitement du combustible nucleaire. Dans ce contexte, la stabilite des liquides ioniques sous l’effet des rayonnements ionisants (α, β ou γ) est un critere determinant pour leur application eventuelle. L’objectif de ce…
This work considers the influences of various types of die surface treatment, lubricants and temperature on friction for hot forging process of brass. Well-known ring compression test were carried out to evaluate friction coefficient for various conditions. Tool material was hot work tool steel H13 and workpiece mater…
This group of collaborators has been funded, by the National Space Biomedical Research Institute (NSBRI) and the U. S. National Aeronautics and Space Administration (NASA) as of February, 2009 to develop a prototypic dosimeter/microdosimeter instrument that measures in real time the radiation risk to personnel in a ti…