Materials Literature
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The corrosion performance of one-side Precoated steels for automotive body was investigated and new precoated steel suitable for exterior panel use was evaluated by several kinds of corrosion testing. Ni-Zn alloy electroplated steel may be more effective for insufficiently painted portion. Application of Fe-Zn alloy p…
A general equation for determining squeeze life has been developed which can be derived theoretically and correlates extremely well with experimental and field data. This equation can be applied to scale inhibitor residual data to more accurately predict the average scale inhibitor concentration in the residual water…
Transmission-loss characteristics of Al2O3-doped silica fibers have been investigated to develop an Al2O3alternative dopant for VAD silica-based optical fibers. Optical properties of Al2O3-doped silica bulk glass and fibers were measured in the0.11-30-\mum spectral region. From the experimental results, the intrinsic…
The properties of chalcogenide glasses depend on both chemical composition and molecular structure. The method of controlling the properties of chalcogenide glasses by changing their molecular structure is considered. The effect of both the chemical composition and the nature of the chemical bonding on the efficiency…
Abstract A number of new liquid crystalline tetrazine derivatives was synthesized. The electro‐optical studies showed that the 3‐n‐alkyl‐6‐[4‐(4‐n‐alkyl‐cyclohexanoyloxy)phenyl]‐1,2,4,5‐tetrazines are excellent dyes for guest‐host displays with positive colour contrast.
This paper deals with some specific properties of amidopolyamines, closely related to polyamides, which have been used as curing agents for epoxy resins. A series of compounds has been prepared and their general properties described. Only two properties have been examined in detail, namely, those of inhibit(on of corr…
Lattice parameters of quenched Mn1−XFeX (X=0.27–0.31), (Mn1−XFeX)0.95Cu0.05 (X=0.15–0.28), and (Mn1−XCoX)0.95Cu0.05 (X=0.05–0.19) alloys were measured at temperatures between 80 and 480 K. The Mn–Fe and Mn–Fe–Cu alloys transformed from fcc to fct(c⁄a<1) structure on cooling below a critical temperature which was equal…
We theoretically investigate fluctuations in a nematic liquid crystal about a non-equilibrium steady state due to a stationary shear flow. For the special case, where the wave-vector lies in the shear plane, we find that the central peak in the light scattering spectrum (caused by director fluctuations) is (in additio…
The permeability to water of the fibre cell wall of birch (Betula pubescens Ehrh.) and lime (Tilia × vulgaris Hayne) wood, was measured in wood slices in which most of the void space was filled with paraffin wax or a polymerizing silicone elastomer. An osmotic technique was used with solutes of molecular weight great…
The smectogenic compound 4-acetyl-4'-n-tetradecanoyloxyazobenzene was considered. The phase diagram of the binary mixture of its constituent parts, that is dodecane and 4-acetyl-4'n-acetoyloxyazobenzene, was determined. A miscibility gap in the liquid state was observed. This was considered as support for the view tha…
An evaluation has been made of the action of khellin, a furochromone derivative from Ammi visnaga, at the dose of 50 mg q.i.d. during four weeks, on the plasma lipids of 20 non-obese normolipaemic male subjects after a placebo period of two weeks. The plasma lipids were measured each week and one week after discontinu…
xR2O・B2O3・rSiO2系ガラス (0<x<1.3; r=1及び2; R=Na及びK) 並びにyNa2O・(1-y)B2O3系ガラスの弾性的性質をパルス伝ぱ法で測定した. ナトリウムホウ酸塩ガラス及び5mol% MgOを含むこの系のガラスの弾性率は (MgO+Na2O)/B2O3=0.5において最大値となった. この組成はこれらのガラス中の4配位ホウ素の割合N4がN4=(MgO+Na2O)/B2O3の関係よりはずれる組成と一致する. したがって, 弾性率はN4が最大となる組成あるいは非架橋酸素の発生を告げるインジケーターとしての働きがあることが示唆される. このアルカリホウ酸塩系ガラス中での結果をホウケイ酸塩系ガラスに適用し…
A practical synthesis of the chlorin macrocycle has been developed which depends on a mild photochemical cyclisation as the key step.
Banding patterns of freeze-etched and replicated rat tail tendon collagen fibrils were studied. Better banding definition was obtained by freezing the samples without using a cryoprotectant and by prolonging etching. Under these conditions, the banding pattern was characterized by a sequence of elevated and depressed…
Isobutane, 2-methylprop-1-ene, and aromatic compounds are formed from CO–H2 on rare earth metal oxides (La2O3 and Dy2O3) under severe conditions (P 400 bar and T 410–475 °C).
Dibenzotetraselenafulvalene has been synthesized from 1,2,3-benzoselenadiazole; charge-transfer salts based on the product show semiconducting properties.
The relationship between relative mobility on sodium dodecyl sulfate-polyacrylamide gels and the logarithm of molecular weight was linear for peptides derived by CNBr cleavage from purified collagen chains. One striking exception was found: when the CNBr peptide alpha 1(III)CB-8 was subjected to electrophoresis on a p…
Plasma spraying was employed to obtain rapidly solidified dense metastable alumina samples. They have been studied after being sprayed and in various annealed states by transmission electron microscopy and X-ray powder diffraction. The so-called “γ” phase has been imaged by T.E.M. and exhibits a more or less ordered d…
(1983). On the migration of helium bubbles. Radiation Effects: Vol. 78, No. 1-4, pp. 381-383.
Abstract Au 2 (SeO 2 ) 2 O was prepared from gold and excess selenic acid in a sealed tube at 533 K. The crystal structure [Pba2, a = 659.2(2), b = 1183.7(3), c = 399.8(1) pm, Z = 2,R = 0.087] was determined; gold atoms are bridged by oxide ions (lying on twofold axes) and selenite ions. The extended structure consist…