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 birefringence in mixtures of 4-cyano-4\ensuremath{'}-octyloxybiphenyl (80CB) and 4-cyano-4\ensuremath{'}-hexyloxybiphenyl (60CB) has been studied near the nematic---to---smectic-$A$ ($\mathrm{NA}$) and smectic-$A$---to---reentrant-nematic ($A{N}^{\ensuremath{'}}$) transitions. There is an overall increase in the b…
Repeated attempts have been made to develop a corrosion index that would be applicable to all waters. These attempts have made it clear that a series of indexes must be employed to take into account the many different types of corrosion as well as all mitigating parameters.
It was shown that a modified Huey test, i.e., a 24-h immersion in boiling 40% HNO3, is able to exactly detect the susceptibility to intergranular corrosion of Alloy 600, which is correlated with intergranular stress corrosion cracking (IGSCC) behavior in high temperature water containing small amounts of chloride ions…
Forty-two patients who had bursts of spontaneous, bilaterally synchronous slow waves during the waking state in an otherwise normal EEG were compared with 42 age-matched control subjects with normal EEGs. The study group had a significantly higher incidence of diffuse encephalopathy than did the control group. They al…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRole of spin change in the stereomobile reactions of strong-field d6 transition-metal complexesL. G. Vanquickenborne and K. PierlootCite this: Inorg. Chem. 1981, 20, 11, 3673–3677Publication Date (Print):November 1, 1981Publication History Published online1 May 2002Published…
To investigate mechanisms of reactive hyperemia, single arterioles of the hamster cheek pouch were occluded for periods of 1 s-3 min. Arteriolar diameters were measured upstream and downstream from the occlusion. O2 availability to the tissue was controlled by equilibrating the suffusate with low (0% O2) or high (10%…
The x-ray diffraction pattern from aligned samples of the smectic-$I$ ($\mathrm{Sm}I$) phases of a number of compounds has been considered, with particular emphasis on TBDA (${\mathrm{C}}_{10}$${\mathrm{H}}_{21}$ PhNCHPhCHNPh${\mathrm{C}}_{10}$${\mathrm{H}}_{21}$, where Ph stands for the phenyl group) which exhibits b…
Abstract Two types of photochromic polymers were prepared and studied: a copolymer of maleic anhydride with styrene containing aromatic azo groups P(MAH‐STY‐AAB) and a copolymer of methacrylic acid with methacryloylamidoazobenzene, P(MA‐MAAB). The effects of the polymeric carrier, the solution viscosity, and the posit…
Abstract Trimethylsilyl cellulose (TMSC) has been found to melt at 320–340°C in the absence of oxygen. When TMSC is prepared from chemical cellulose, using hexamethyldisilazane and a catalytic amount of chlorotrimethylsilane/pyridine in dimethylformamide, a thermoplastic material is obtained which may be melt spun int…
Mutations in the arabinose transport operons of Escherichia coli K-12 were isolated with the Mu lac phage by screening for cells in which beta-galactosidase is induced in the presence of L-arabinose. Standard genetic techniques were then used to isolate numerous mutations in either of the two transport systems. Comple…
Calanus finmarchicus was allowed to feed on two forms of the diatom Thalassiosira weissflogii ( =T. fluviatilis ): normal cells, which are spinose, and cells which did not have spines. Filtration rates of Calanus on the spinose form were on average 1.7 times higher than on cells with no spines.
Magnetic susceptibility measurements on the eclipsed layered structure series of $[\mathrm{N}{\mathrm{H}}_{3}{(\mathrm{C}{\mathrm{H}}_{2})}_{n}\mathrm{N}{\mathrm{H}}_{3}]\mathrm{Cu}X$ ($n=2, 3, 4, \mathrm{and} 5$ for $X={\mathrm{Cl}}_{4}$ and $n=2$ for $X={\mathrm{Cl}}_{2}{\mathrm{Br}}_{2}$) indicate that the interpla…
A protective ferric covering was formed on mild steel coupons by reaction with the oxidative inhibitor, nitrite. In cultures of a ferric iron reducing bacterium, there was a loss of passivity of coupons and polarization studies revealed intense depolarization of the anode, while in the absence of the bacterium, the me…
Human plasma low density lipoproteins (LDL) were deuterated in the phospholipid headgroup region by exchange with phosphatidylcholine-N(CD3)3-apolipoprotein A complexes. The exchange was associated with a net transfer of phosphatidylcholine to LDL leading to an increase in total phospholipid content by 27%. Practicall…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChain characteristics and counterion binding of poly(N-vinylimidazole) and its protonated and quaternized saltsJ. S. Tan and A. R. SochorCite this: Macromolecules 1981, 14, 6, 1700–1706Publication Date (Print):November 1, 1981Publication History Published online1 May 2002Pub…
This paper describes a numerical method for calculating electric fields very accurately in configurations including voluime resistance or surface resistance. The principle of the method is to incorporate the field effect of the true charge caused by conductivity in that of complex fictitious charges by the charge simu…
The molecular dynamics method has been used to study a model system of 1000 symmetric top particles placed at the sites of a cubic lattice and interacting with the pair potential Uij = - ε ij P 2(cos β ij ). Here ε ij is a positive constant, ε, for neighbouring sites and zero otherwise. The equations of motion are wri…
The SCC susceptibility of sensitized Type 304 stainless steel was studied using slow strain rate tests in 0.01 M NaCl as a function of applied potential at temperatures ranging from 100 to 250 C. Potential-temperature domains in which purely IGSCC, simultaneous IGSCC and TGSCC, and IGSCC accompanied by pitting corrosi…
Abstract Thermal degradation behavior of poly(1,3‐phenylene isophthalamide) and poly(chloro‐2,4‐phenylene isophthalamide) was investigated with the aid of some appropriate model compounds. The pyrolysis products of these materials were identified by gas chromatography (GC), gas chromatography/Fourier transform infrare…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOne-electron transfer reactions involving zinc and cobalt porphyrins in aqueous solutionsP. NetaCite this: J. Phys. Chem. 1981, 85, 24, 3678–3684Publication Date (Print):November 1, 1981Publication History Published online1 May 2002Published inissue 1 November 1981https://do…