Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The pyrolysis of Fe-tetraphenylporphyrin chloride (FeCITPP) has been examined by FTIR spectroscopy. Two series of samples, with and without additional carbon black, were studied. It was found that the decomposition of FeCITPP occurred in a very narrow range of temperature. The mixture of FeCITPP and carbon decomposed…
Abstract The purpose of this study is to evaluate the effect of some well‐known flame retardants on the ignition behaviour of cotton fabric. Two types of flame retardants acting in different phases (e.g. condensed phase and gas phase) were used. At low add‐on of the retardant acting in the condensed phase the ignition…
Abstract Electrical breakdown of polyphenylene sulfide (PPS) films, one of the high‐temperature engineering plastics, has been investigated. The results show that the dc breakdown strength is lower than the impulse one, and that the difference in electric strength between dc and impulse becomes wider as the sample thi…
Abstract The phase equilibrium in the systems Na 2 SeO 4 CdSeO 4 H 2 O and Na 2 SeO 4 MnSeO 4 H 2 O were studied and it was established that new phases were obtained — double salts with a composition: Na 2 Cd(SeO 4 ) 2 · 2 H 2 O and Na 2 Mn(SeO 4 ) 2 · 2 H 2 O. The fields of phase equilibrium of the double salts i…
A novel ‘picket-fence’ porphyrin, 5,10,15,20-tetrakis[o-(tetrahydro-2-thenoylamino)phenyl]porphyrin (H2L) with ligating tetrahydrothiophene rings disposed perpendicular to the porphyrin plane has been synthesised. Its zinc(II) derivative, [ZnL], binds two silver(I) ions co-operatively with a dissociation constant of 4…
In this chapter we introduce the basic electrical terminology and account for the wide variation of observed electrical conductivities and charge transport processes. Our treatment is introductory and necessarily simplified; the reader is referred to more advanced texts during the discussion.
Abstract
The isomer shift S and quadrupole splitting \ensuremath{\Delta} of the 35.5-keV $^{125}\mathrm{Te}$ level in M${\mathrm{Te}}_{2}$ (M=Ti, V, Cr, Fe, Co, and Ni) were measured at 80 K. M${\mathrm{Te}}_{2}$ with pyrite- and marcasite-type structures exhibit a linear relationship between S and \ensuremath{\Delta}, while t…
Azaferrocene reacts with chloro[5,10,15,20-tetrakis(pentafluorophenyl)porphyrinato]iron(III) to give a low-spin iron(II) porphyrin, [FeII(tfpp){Fe(C5H5)(C4H4N)}2], the crystal and molecular structure of which has been determined; while air-stable in the solid state, in solution it loses co-ordinated azaferrocene and (…
The diatom community that inhabits both the water-column and the benthos of tidepools positioned along an intertidal gradient, during late spring and early summer is described. Samples from the water-column and benthos of five tidepools, ranging from 1.5 to 6.5 m, were collected on five dates, and the diatom community…
The surface properties of a film made from a novel latex product, surface-hydrophilic elastomer latex (SHEL), were studied by the sessile-drop contact-angle technique. The advancing contact angle of water on a SHEL film was very low, indicating that the surface was hydrophilic. The surface hydrophilicity was sustained…
Oil-soluble copper salts such as copper naphthenate have been evaluated as additives to mineral oil, synthetic hydrocarbon, and polyol ester base stocks in the Penn State microoxidation test. These tests were carried out at 225°C under test conditions which show good agreement with the behavior of automotive crankcase…
This volume is devoted to solidification of polymers in general; crystalline, liquid crystalline, and amorphous polymers, including oriented polymers and the effects of pressure and processing are dis
Structural systematics, programmability, and guest transport are discussed for a large class of lattice clathrates based on tetraarylporphyrins.
In order to clarify the rate and mechanism of the formation of Sm–Fe intermetallic compounds by the reduction-diffusion (R-D) process, three kinds of experiments were carried out: (1) the reduction of pellets of Sm2O3 powder mixed with CaH2, (2) the R-D reaction for the pellets which were composed of Sm2O3, CaH2 and F…
ABSTRACT A method has been developed for analyzing the X‐ray diffraction patterns of amorphous solids, and the atomic arrangement in two simple glasses has been completely worked out. In SiO 2 , for example, each silicon is tetrahedrally surrounded by 4 oxygens at a distance 1.60 Å, and each oxygen is shared between t…
In order to clarify the dissolving aspects of refractory elements (Ta, Mo, V) which are components of beta titanium alloys, the experiments of VAR with a mold of 100 mm diameter were carried out. In the experiments, the initial diameters of those elements were changed and their particles were observed after melting. T…
The effect of δ ferrite morphology and grain boundary property on the low temperature toughness of austenitic stainless steel SUS304L weld metal has been studied. The types of δ ferrite were classified into three categories : vermicular, lacy, and globular. When Charpy test were performed at low temperature, brittle f…
The interaction of mer-IrCl3(SEt2)3 with Mg(mes)2(thf)2[mes = mesityl (2,4,6-trimethylphenyl), thf = tetrahydrofuran] in Et2O-thf gives trans-Ir(mes)2(SEt2)21. With PMe31 gives trans-Ir(mes)2(PMe3)22; both compounds are paramagnetic. With NO, 2 reacts to form the formally iridium(III) complex Ir(mes)2(NO)(PMe3)24 that…
The crystal structure of Cs 3 Sr[Ag 2 (SCN) 7 ] was determined from single crystal X-ray diffraction data (tetragonal, I [unk]2 m , a = 11.083(2) Å, c = 20.117(3) Å, Z = 4, D x = 2.98 Mgm −3 , μ (Mo K α ) = 8.55 mm −1 , T = 293 K, R = 0.040 for 1183 unique reflections). The main structural feature is the binuclear μ -…