Materials Literature
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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…
Barium ferrite thin films with perpendicular magnetic anisotropy have been prepared by DC diode sputtering. When a sintered target with appropriate composition was used, c-axis oriented Ba ferrite film was obtained whose easy direction of magnetization was normal to the film plane. Its saturation magnetization Ms, coe…
Abstract Values of ζ, the zeta potential, were determined for 34 different Namontmorillonites by electrophoresis. These values were used in the equations of diffuse double‐layer theory to obtain the corresponding values of σ', the surface charge density at the outer limit of the Stern layer. In addition, data on catio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStatic and dynamic single-crystal x-ray diffraction studies of some solid-state photodimerization reactionsHachiro Nakanishi, William Jones, John M. Thomas, Michael B. Hursthouse, and Majid MotevalliCite this: J. Phys. Chem. 1981, 85, 24, 3636–3642Publication Date (Print):No…
The dependences of brightness, emission efficiency η, average electric field EA, conduction current JA, and emission lifetime τ upon the device parameters such as film thickness, substrate temperature during evaporation, and Mn concentration have been systematically investigated in ZnS:Mn thin-film electroluminescent…
A general statistical–mechanical description of the liquid–glass transition as a transition from ergodic to non-ergodic behaviour is presented. The description is based on the concept of the different atomic configurations of a glass. The discontinuities of the thermodynamic derivatives of second order, which characte…
As examples of the best use of the so-called AC calorimetry technique, several results are described from various viewpoints. The behavior of heat capacity at ferroelectric, antiferroelectric and structural phase transitions is surveyed from the standpoint of critical behavior, of jump at first order transition, or of…
Magnetization curves are theoretically calculated for exchange-coupled ferrimagnetic double-layered (ECDL) films, each layer of which has a uniaxial anisotropy with the easy axis perpendicular to the film plane and exhibits a rectangular hysteresis loop. With this model are obtained the conditions for the appearance o…
Abstract The electrical resistivity of peroxide and radiation crosslinked polyethylene/carbon black compounds was studied as a function of black concentration and, temperature in heating/cooling cycles. Different carbon blacks in compounds with polyethylene responded differently, regarding electrical resistivity, to t…