Materials Literature
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Results from a high resolution calorimetric study for the alkylcyanobiphenyl liquid crystal series nCB, with n the number of carbons in the alkyl chain, confined to the 0.2 \ensuremath{\mu}m diam cylindrical pores of Anopore membranes are reported. The orientational order at the pore wall is controlled and varied from…
Summary Soil solution was obtained from potted rhizosphere or non‐rhizosphere soils by water displacement or soil centrifugation. The pH of the displaced solutions was lower than that of bulk soils when solutions were obtained from non‐rhizosphere soil, although it increased as plants grew. This increase probably refl…
Studies investigating the erosion mechanism of the newly developed poly (fatty acid dimer: sebacic acid) polyanhydride (p:[FAD:SA]) are described. The overall erosion of different monomer compositions of p(FAD:SA) copolymers was examined to determine whether and to what extent copolymer properties affected polymer ero…
Impedance spectra of carbon steel in the presence of 1‐hydroxy‐ethane‐1,1‐diphosphonic acid (HEDP) has been investigated in neutral solutions. The aim of the measurements was to study the effect of HEDP on the carbon steel corrosion as a function of inhibitor concentration. An optimal inhibitor concentration was found…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnomalous Double Cyclization Reactions of .beta.-FormylporphyrinsLaurent Barloy, David Dolphin, Daniel Dupre, and Tilak P. WijesekeraCite this: J. Org. Chem. 1994, 59, 26, 7976–7985Publication Date (Print):December 1, 1994Publication History Published online1 May 2002Publish…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSupramolecular Chemistry. 49. Ligand-Porphyrin Complexes: Quantitative Evaluation of Stacking and Ionic ContributionsHans-Joerg Schneider and Manxue WangCite this: J. Org. Chem. 1994, 59, 24, 7464–7472Publication Date (Print):December 1, 1994Publication History Published onl…
The sequence of a 2,437-bp DNA segment from the naphthalene upper catabolic pathway operon of plasmid NAH7 was determined. This segment contains three large open reading frames designated nahQ', nahE, and nahD. The first of these is the 3' end of an open reading frame that has no known function, the second (993 bp) en…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpatial Distribution of Homopolymers in Block Copolymer Microdomains As Observed by a Combined SANS and SAXS MethodSatoshi Koizumi, Hirokazu Hasegawa, and Takeji HashimotoCite this: Macromolecules 1994, 27, 26, 7893–7906Publication Date (Print):December 1, 1994Publication Hi…
Abstract The oxidation kinetics of NO by O 2 in aqueous solution was observed using a stopped flow apparatus. The kinetics follows a third order rate law of the form k · [NO] 2 · [O 2 ] in analogy to gas‐phase results. The rate constant at 296 K was measured as (6.4 ± 0.8) · 10 6 M −2 s −1 with an activation energy of…
High-temperature oxide melt solution calorimetry with molten 2PbO{center_dot} B{sub 2}O{sub 3} as a solvent can be used for determining enthalpies of formation of carbonates and hydrous silicates. Under conditions of gas flow at 1-2 cm{sup 3}/s, all H{sub 2}O and CO{sub 2} is expelled from the solvent, leading to a re…
The heat-stable inhibitor of cAMP-dependent protein kinase (PKI) was shown previously to export the kinase catalytic subunit (C) from the nucleus (Fantozzi, D. A., Harootunian, A. T., Wen, W., Taylor, S. S., Feramisco, J.R., Tsien, R. Y., and Meinkoth, J. L. (1994) J. Biol. Chem. 269, 2676-2686), in addition to its ab…
Fluid–fluid phase separation in a simple model for a colloid dispersed in a solution of stiff rodlike polymers is studied by means of Gibbs ensemble Monte Carlo simulations. The fluid–solid transition for this model is computed using first-order perturbation theory. The phase diagrams clearly show that a stable critic…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA well-defined surface-confinable fullerene: monolayer self-assembly on Au(111)Xiaobo Shi, W. Brett Caldwell, Kaimin Chen, and Chad A. MirkinCite this: J. Am. Chem. Soc. 1994, 116, 25, 11598–11599Publication Date (Print):December 1, 1994Publication History Published online1…
Temperature programmed static secondary ion mass spectrometry (TPSSIMS) and temperature programmed desorption (TPD) have been used to study the kinetics of adsorption, dissociation, and desorption of NO on Rh(111). At 100 K, NO adsorption is molecular and proceeds via mobile precursor state kinetics with a high initia…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUrea-Derivatized p-tert-Butylcalix[4]arenes: Neutral Ligands for Selective Anion ComplexationJurgen Scheerder, Mariacristina Fochi, Johan F. J. Engbersen, and David N. ReinhoudtCite this: J. Org. Chem. 1994, 59, 25, 7815–7820Publication Date (Print):December 1, 1994Publicati…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA New Bimetallic Ferromagnet, [Ni(en)2]3[Fe(CN)6]2.cntdot.2H2O, with a Rare Rope-Ladder Chain StructureMasaaki Ohba, Naomi Maruono, Hisashi Okawa, Toshiaki Enoki, and Jean-Marc LatourCite this: J. Am. Chem. Soc. 1994, 116, 25, 11566–11567Publication Date (Print):December 1,…
Protein Science, the flagship journal of The Protein Society, serves an international forum for publishing original reports on all scientific aspects of protein molecules. The Journal publishes papers by leading scientists from all over the world that report on advances in the understanding of proteins in the broadest…
Rapid determination of cation exchange capacity (CEC) of soils can be useful for soil testing to improve efficiency of fertilizer use. The methylene blue (MB) method of Wang et al. (1989) has been simplified for rapid determination of CEC of mineral soils in field. For the temperate and tropical soils used, the relati…
The nearest-neighbor substitutional nitrogen center [N-N${]}^{0}$ (A center), is one of the most common defects in natural diamond. [N-N${]}^{0}$ is diamagnetic and therefore cannot be studied by electron paramagnetic resonance (EPR). However, the [N-N${]}^{+}$ center is paramagnetic, and we report detailed EPR and el…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEstimation of Hansen Solubility Parameters for (Hydroxyethyl) and (Hydroxypropyl) cellulose through Molecular SimulationPhillip Choi, Tom A. Kavassalis, and Alfred RudinCite this: Ind. Eng. Chem. Res. 1994, 33, 12, 3154–3159Publication Date (Print):December 1, 1994Publicatio…