Materials Literature
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A novel route for modifying the interlayer pore structure of silica iron oxide sol particle pillared montmorillonite was proposed based on the post-intercalation of organic templates. The pristine mixed oxide sol pillared montmorillonite (SFM) was prepared by the reaction of Na-montmorillonite with silica iron sol par…
The surface chemistry, reactivity of vaterite, and its crystalline transformation in the presence of manganese(II) have been studied in ultra-pure water and at room temperature using several techniques: X-ray diffraction (XRD), scanning electron microscopy (SEM), specific area measurements (BET), infrared (IR) spectro…
The effect of vanadium and niobium on the restoration behavior after hot deformation in medium carbon spring steels was investigated by use of a thermomechanical processing simulator. It was clarified that vanadium is effective to inhibit restoration after hot deformation, because vanadium carbides and/or nitrides fin…
Shock-wave compression of poly(aminomethineimine) under a pressure of 40 GPa produced no crystalline material but amorphous carbon nitrides having microscopically different morphologies, a quasi-spherically concentric closed-shell form, a random-layer-structure and a completely amorphous structure. These have the same…
Abstract : This paper concerns itself with photo-induced anisotropy in two azobenzene functionalized polymers. A simple physical model of the process which considers only three possible states of azo chromophores is proposed. This model predicts an equilibrium level of anisotropy which depends on the pump irradiance a…
The effect of pore size on the gaseous adsorption of ethenzamide (EZ) on porous crystalline cellulose (PCC) in a mixture of PCC-EZ, and the physicochemical stability of EZ in a mixture of PCC-EZ after storage at various relative humidities (RHs) were investigated by powder X-ray diffractometry, differential scanning c…
A polarised neutron diffraction (PND) experiment on [Ru(acac)3] at 4.18 K and 5 T along the b and c axes yielded 28 and 17 flipping ratios respectively. Single-crystal X-ray structure determinations at 293, 92 and 10.5 K, together with powder neutron diffraction experiments, provided auxiliary data allowing magnetic s…
The electrochemistry of a µ-oxo dimanganese(III) octaethylporphyrin (II) and those of the corresponding mononuclear complexes MnIII(OEP)Cl (I), MnIII(OEP)ClO4 (III) and MnIII(OEP)OH (IV) (where OEP represents octaethylporphyrin) were studied. When complex II was adsorbed on an electrode and placed in aqueous acidic el…
3%Si–Fe (100)[011] single crystal was investigated to analyze its texture evolution during rolling and recrystallization. Cold rolled (100)[011] could be fully recrystallized by utilizing dynamic strain aging, and sharp recrystallized texture was obtained. Rolled texture maintained the initial orientation (100)[011] w…
Impact experiments have been performed to obtain shock compression, release response, and spall strength of two scaled concrete formulations. Wave profiles from a suite of ten experiments, with shock amplitudes of 0.08 to 0.55 GPa, focus primarily on the elastic regime. Despite considerable wave structure that develop…
Calcium carbonate has been modified with three surface modifying systems based upon stearic acid, acrylic acid and a reactive coating comprising acrylic acid with dicumyl peroxide through dry blending. Polypropylene homopolymer was compounded with the coated and uncoated fillers (0 to 65 wt%) through twin screw extrus…
Since ω-phase crystals in β-Ti alloys formed by aging become nucleation sites of α-phase crystals due to further or high temperature aging, it is thought that this phenomenon can be utilized to produce stronger and more ductile (β+α) duplex Ti alloys. In order to form high density ω-phase crystals, the effects of a st…
International audience
Preface. 1. Thermodynamics of Niobium Chlorides and Mixtures with Alkali Chlorides M. Gaune-Escard. 2. Interrelation between the Composition and Structure of Metaphosphate Polyhedra of Molybdenum and Tungsten in the Case of Electro-deposition of Metals and their Alloys N.I. Buryak, et al. 3. High Performance Coating o…
In this note we apply some theoretical predictions that arise in the mean field framework for a large class of infinite range models to structural glasses and we present a first comparison of these predictions with numerical results. 1 Introduction In recent years some theoretical progresses in our understanding of gl…
A review is presented of the current research and development of shape-memory materials, including shape-memory alloys, shape-memory ceramics and shape-memory polymers. The shape-memorymaterials exhibit some novel performances,such as sensoring (thermal, stress or field), large-stroke actuation, high damping, adaptive…
453-623Kの広い温度範囲で高温・高圧のメタノールによるポリエチレンテレフタレート (PET) の加溶媒分解反応の速度定数を決定した. その結果, 臨界温度 (512.6K) 以下のメタノールによる分解の速度定数と, 臨界温度以上のメタノールによる速度定数のArrheniusプロットを同一直線で表すことができることから, 両領域のメタノール間の反応性の差はおもに温度によるものであり, 劇的な変化がないことが明らかになった. 一方, 今回検討した臨界温度以上のメタノールによるPET分解反応に比べて従来の約453Kでの液体メタノールを用いる分解反応速度がかなり遅い理由は, 従来法ではメタノールの蒸気圧が2.7MPaと低く, さらに…
Dc magnetization and ac magnetic susceptibility have been measured in the temperature range 80–300 K for La0.7Ca0.3MnO3 , synthesized by the conventional ceramic and the low temperature combustion methods and annealed at different temperatures. Temperature dependence of the dc magnetization and the ac susceptibility i…
From surface tensions of liquids and Lifshitz-van der Waals (LW) and Lewis acid-base (AB) surface tension components and the AB electron-acceptor γ+ and electron-donor γ˙ parameters determined by contact angle (θ) measurements (using the Young-Dupré equation for polar systems), the interfacial work of salvation (Wst)…
Tranilast, N-(3,4-dimethoxycinnamoyl) anthranilic acid, a widely used antiallergy drug in Japan, has been shown to inhibit transforming growth factor-beta1 release from fibroblasts and reduce collagen synthesis in keloid cells. In the present study, we have investigated the effect of this drug on cardiac hypertrophy i…