Materials Literature
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A model of combined heat and water vapor transport in multi-layered clothing is presented. Transport of heat by conduction and radiation and vapor transport by diffusion are included; heat and mass transport by forced convection are not. The calculations are performed in a time-dependent mode and compared to experimen…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh-spin .fwdarw. low-spin relaxation kinetics and cooperative effects in the hexakis(1-propyltetrazole)iron bis(tetrafluoroborate) and [Zn1-xFex(ptz)6](BF4)2(ptz = 1-propyltetrazole) spin-crossover systemsAndreas Hauser, Philipp Guetlich, and Hartmut SpieringCite this: Ino…
The geometries of two disulfide bridges genetically engineered into subtilisin have been characterized by x-ray crystallography to determine the structural and energetic constraints involved in introducing disulfide bonds into proteins. Both disulfide bridges (Cys-24-Cys-87 and Cys-22-Cys-87) exhibit atypical sets of…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDistance dependence of SERS enhancement factor from Langmuir-Blodgett monolayers on metal island films: evidence for the electromagnetic mechanismG. J. Kovacs, R. O. Loutfy, P. S. Vincett, Carol Jennings, and Ricardo ArocaCite this: Langmuir 1986, 2, 6, 689–694Publication Da…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNuclear magnetic resonance studies on poly(β-hydroxybutyrate) and a copolyester of β-hydroxybutyrate and β-hydroxyvalerate isolated from Alcaligenes eutrophus H16Yoshiharu Doi, Masao Kunioka, Yoshiyuki Nakamura, and Kazuo SogaCite this: Macromolecules 1986, 19, 11, 2860–2864…
The phase relationships in the system ZrO 2 ‐TiO 2 near the compound ZrTiO 4 have been clarified through an experimental study involving the characterization of both single‐crystal and powder specimens, the latter prepared through conventional solid‐state reaction and also by low‐temperature co‐precipitation methods.…
Starvation proteins synthesized by Escherichia coli at the onset of carbon starvation (R. G. Groat and A. Matin, J. Indust. Microbiol. 1:69-73, 1986) exhibited four temporal classes of synthesis in response to glucose or succinate starvation, indicating sequential expression of carbon starvation response (cst) genes.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotophysics of quantized colloidal semiconductors. Dramatic luminescence enhancement by binding of simple aminesT. Dannhauser, M. O'Neil, K. Johansson, D. Whitten, and G. McLendonCite this: J. Phys. Chem. 1986, 90, 23, 6074–6076Publication Date (Print):November 1, 1986Publi…
The vacuum ultraviolet absorption cross sections of SiH4, GeH4, Si2H6, and Si3H8 are reported for the wavelength region 107–220 nm using synchrotron radiation as a light source. Absorption maxima of these compounds were found at the exciting wavelengths of 115–119 nm. Broad peaks observed were mostly assigned as prima…
Recursion formulae for calculating the reflected amplitude ratio of multilayers and superlattices have been derived from the Takagi-Taupin differential equations, which describe the dynamical diffraction of X-rays in deformed crystals. Calculated rocking curves of complicated layered structures, such as non-ideal supe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIsodimorphism in bacterial poly(β-hydroxybutyrate-co-β-hydroxyvalerate)Terry L. Bluhm, Gordon K. Hamer, Robert H. Marchessault, Colin A. Fyfe, and Richard P. VereginCite this: Macromolecules 1986, 19, 11, 2871–2876Publication Date (Print):November 1, 1986Publication History…
Fe-Cr-Co magnets are well-known for their ductility and superior magnetic properties comparable to Alnico alloys. Results on the trials to manufacture them by casting are disclosed. It is found that by proper melting, suitable composition adjustment, and continuous cooling in magnetic aging, magnetic properties compar…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPlant Growth Regulatory Indoles from the Sponges Dysidea etheria and Ulosa ruetzleriJohn H. Cardellina II., David Nigh, and Bradford C. VanWagenenCite this: J. Nat. Prod. 1986, 49, 6, 1065–1067Publication Date (Print):November 1, 1986Publication History Published online1 Jul…
Abstract The kinetic study of the mechanism for the reaction of the initial stages of the electropolymerization of 1-pyrenamine (PA) in an acetonitrile solution was carried out by cyclic voltammetry (CV) and double potential-step chronoamperometry (DPSCA). The experiments were conducted at various time windows (i.e.,…
Several hypotheses are advanced for resource relationships among planktonic diatoms in African freshwater lakes that are consistent with the light and nutrient conditions of the lakes and the extant and fossil distributions of the diatom species in them. The hypotheses are all testable and are potentially powerful too…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudies of composition and crystallinity of bacterial poly(β-hydroxybutyrate-co-β-hydroxyvalerate)Steven Bloembergen, David A. Holden, Gordon K. Hamer, Terry L. Bluhm, and Robert H. MarchessaultCite this: Macromolecules 1986, 19, 11, 2865–2871Publication Date (Print):Novembe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure and selectivity in host-guest complexes of cucurbiturilWilliam L. Mock and Neng Yang ShihCite this: J. Org. Chem. 1986, 51, 23, 4440–4446Publication Date (Print):November 1, 1986Publication History Published online1 May 2002Published inissue 1 November 1986https://…
A rigorous coupled-wave analysis for metallic surface-relief gratings is presented. This approach allows an arbitrary complex permittivity to be used for the material and thus avoids the infinite conductivity (perfect-conductor) approximation. Both TE and TM polarizations and arbitrary angles of incidence are treated.…
A review is given of the studies of the dimensionality characteristics of percolation clusters. The purely geometric nature of a percolation phase transition and the great variety of the quantities exhibiting critical behavior make this geometric approach both informative and useful. In addition to the fractal dimensi…
The direct determination of carbon–carbon bonding in amorphous carbon thin films has been performed by core-electron energy-loss spectroscopy and cross-polarization magic-angle spinning 13C nuclear magnetic resonance (NMR) for a series of varying band-gap amorphous carbon films (1.1–3.0 eV). The amorphous carbon films…