Materials Literature
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Research Article| January 01, 2006 Neutron Powder Diffraction Studies of Order-Disorder Phase Transitions and Kinetics Simon A. T. Redfern Simon A. T. Redfern Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, United Kingdom, e-mail: satr@cam.ac.uk Search for other works by this…
This paper studies spinodal decomposition in the Cahn-Hilliard model on the unit disk. It has previously been shown that starting at initial conditions near a homogeneous equilibrium on a rectangular domain, solutions to the linearized and the nonlinear Cahn-Hilliard equation behave indistinguishably up to large dista…
We report the synthesis and liquid crystalline properties of novel ester‐substituted tetraphenylenes obtained from octamethoxytetraphenylene by demethylation and esterification. The target compounds display focal‐conic textures typical for columnar mesophases, which are either rectangular or hexagonal columnar in natu…
It has been found that small additions (∼0.1 vol%) of chromium hexacarbonyl and molybdenum hexacarbonyl promote the combustion of a stoichiometric mixture of H2 + O2, resulting in a lowering of the lower limit of initiated ignition and an increase of the visible velocity of flame propagation; as this takes place, inhi…
The aim of the present investigation was to immobilize zinc phthalocyanines in a silicate matrix and to test the photobactericidal properties of the matrices so prepared toward Esherichia coli in model aqueous media. For the purpose, tetra tertiary butyl zinc phthalocyanine (TBZnPc) and zinc phthalocyanine tetrasulfon…
Abstract Two quasi‐one‐dimensional compounds [Ln III (terpy)(DMF) 4 ][W V (CN) 8 ] · 6H 2 O, where Ln stands for Gd or Sm, were synthesized and the measurements of their magnetic features were carried out. Magnetization was measured at 2K in the field range 0–5 T. To extract physical information from the experimental…
木質材料に使われる主な接着剤5種類〔ユリア樹脂接着剤（UF），メラミン・ユリア共縮合樹脂接着剤（MUF），フェノール樹脂接着剤（PF），レゾルシノール樹脂接着剤（PRF），水性高分子イソシアネート系接着剤（API）〕のインベントリ分析を行った。接着剤 1 kgの製造に必要な資源の調達から原料の製造と輸送，接着剤製造までのエネルギー消費量，CO2 排出量，NOx排出量，SOx排出量を算出した。その結果，MUFとPRFは共にエネルギー消費量とSOx排出量が最も多く，UFのそれらは両者の57～67％と最も少なくなることが分かった。APIとPFは両者の中間的な値となった。APIのCO2 とNOxの排出量は，最も少ないUFの6倍以上と，顕著…
Pure iron exposed to acetate buffer showed both metal dissolution and hydrogen evolution inside the crevice region. Potential drop occurred inside the crevice led to both active dissolution and cathodic reactions. Hydrogen ingress into the specimen was monitored on the rear side using electrochemical hydrogen permeati…
An analysis of the experience in application of the KORSAR computer code in the Gidropress Special Design Bureau over the last three years is given. The results of improvement of the code with an account of increased requirements imposed on the design calculations are considered. Concrete examples of numerical simulat…
Johnson‐Holmquist constitutive model for brittle materials, coupled with a crack softening model, is used to describe the deviatoric and tensile crack propagation beneath impact crater in granite. Model constants are determined either directly from static uniaxial strain loading experiments, or indirectly from numeric…
G. I. Taylor showed that dynamic material properties could be deduced from the impact of a projectile against a rigid boundary. The Taylor anvil test became very useful with the advent of numerical simulations and has been used to infer and/or to validate material constitutive constants. A new experimental facility ha…
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 Richard H. Bossi; NDE Developments for Composite Structures. AIP Conf. Proc. 6 March 2006; 820 (1…
We performed broadband dielectric measurements for pure 1‐propanol (PrOH) and 80 wt% PrOH‐water mixture in the temperature range of 78 K and 300 K and frequency range of 1 μHz and 30 GHz. For pure PrOH, Debye‐type primary process and two small processes at higher frequency than the primary loss peak are observed in wh…
Silver nanowires with high aspect ratios of up to more than 60 were synthesized on a large scale by the redox reaction between silver nitrate and sodium diphenylamine sulfonate at room temperature and in the absence of surfactant and hard-template and seed. When the molar ratio of reductant sodium diphenylamine sulfon…
The electrochemical behavior of 316L stainless steel (316L SS) in NaCl solution by using potentiondynamic, EDX and scanning electron microscope (SEM) techniques was determined. The addition effect of 2-mercaptobenzimidazole (MBI) on the pitting corrosion of 316L SS in NaCl solutions were investigated at different temp…
The treatment of shavings, trimmings and splits of leather waste from tanneries has a potential to generate value-added products. In this study enzymatic treatment of leather waste was performed. This method utilizes alkaline protease produced by Bacillus subtilis in our laboratory by submerged fermentation. Optimum c…
Multiferroic Bi1-xGdxFeO3(x=0, 0.05, 0.1, 0.15, 0.2) ceramics were prepared by conventional solid state reaction method. X-ray diffraction was carried out to characterize the crystal structure and to detect any possible impurities existing in these ceramics. Frequency dependence of dielectric properties of Bi1-xGdxFeO…
Transformers are generally energized by random closing of the circuit breaker contacts, with the system voltage being applied on the transformer windings at random instants. This kind of switching normally introduces initial asymmetrical magnetic flux in the windings, driving the transformer into saturation. As a resu…
Two commercially available refractory ceramic materials primary used as substrates for fast firing of porcelain stoneware were investigated. The first one, commercially known as CONC, contains cordierite and mullite in the ratio 50:50. The REFO refractory composite material with coarser microstructure compared to CONC…
The International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM) was founded with the aim to promote scientific cooperation in the area of construction materials and structures worldwide. This mission is achieved through collaboration of leading experts in construction prac…