Materials Literature
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The degradation of sheets of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (BIOPOL) by aerobic sewage sludge was analyzed. Degradation of the polymer was highly dependent on the pH of the culture medium and was maximal between pH 7 and pH 8.5. Below pH 6 and above pH 9 the degradation rate was very low. Agitation of th…
We have investigated the thermodynamic interactions as functions of component volume fraction φ and temperature T in six binary polymer blend systems. The components in all cases were model polyolefins, made by saturating the double bonds of nearly monodisperse polydienes. Small-angle neutron scattering measurements f…
This review is concerned with three types of physical phenomena which are affected by the environment of the species under study. They are the vibrational spectrum, nonlinear optical properties, and nuclear magnetic shielding of the molecule (or atom) of interest. The two types of environment discussed are liquid solv…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfluence of the Reduction/Evacuation Conditions on the Rate of Hydrogen Spillover on Rh/CeO2 CatalystsS. Bernal, J. J. Calvino, G. A. Cifredo, A. Laachir, V. Perrichon, and J. M. HerrmannCite this: Langmuir 1994, 10, 3, 717–722Publication Date (Print):March 1, 1994Publicati…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIsotropic Magnetic Exchange Interaction through Double .mu.-1,2,4-Triazolato-N1,N2 Bridges: X-ray Crystal Structure, Magnetic Properties, and EPR Study of Bis(.mu.-3-pyridin-2-yl-1,2,4-triazolato-N',N1,N2)(sulfato-O)aquacopper(II)diaquacopper(II) TrihydratePetie M. Slangen,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNear-Infrared Luminescence of Supramolecular Species Consisting of Osmium(II)- and/or Ruthenium(II)-Polypyridine ComponentsAlberto Juris, Vincenzo Balzani, Sebastiano Campagna, Gianfranco Denti, Scolastica Serroni, Gabriela Frei, and Hans U. GuedelCite this: Inorg. Chem. 199…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolypropylene-graft-Polycaprolactone: Synthesis and Applications in Polymer BlendsT. C. Chung and D. RhubrightCite this: Macromolecules 1994, 27, 6, 1313–1319Publication Date (Print):March 1, 1994Publication History Published online1 May 2002Published inissue 1 March 1994htt…
We have isolated and characterised the gene encoding the glycolytic enzyme enolase (2-phospho-D-glycerate hydrolase) from the human malaria parasite Plasmodium falciparum. This was achieved using a combination of cDNA sequencing and inverse-PCR techniques. The gene maps to chromosome 10 of the parasite. We have also m…
The crystal structure of mitochondrial malate dehydrogenase from porcine heart contains four identical subunits in the asymmetric unit of a monoclinic cell. Although the molecule functions as a dimer in solution, it exists as a tetramer with 222 point symmetry in the crystal. The crystallographic refinement was facili…
Abstract Two methods are presented for calculating the interfacial tension between two immiscible Newtonian fluids. The procedures require only two measurements of the approximate interface shape during the low‐Reynold‐number interfacial‐tension‐driven transient motion of (i) the relaxation of a modestly elongated dro…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation of Star-Branched Polymers with Cyclotriphosphazene CoresJi Young Chang, Heung Jin Ji, Man Jung Han, Suh Bong Rhee, Seonkyeong Cheong, and Minjoong YoonCite this: Macromolecules 1994, 27, 6, 1376–1380Publication Date (Print):March 1, 1994Publication History Publis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEvolution of Ultramicroporous Adsorptive Structure in Poly(furfuryl alcohol)-Derived Carbogenic Molecular SievesRavindra K. Mariwala and Henry C. FoleyCite this: Ind. Eng. Chem. Res. 1994, 33, 3, 607–615Publication Date (Print):March 1, 1994Publication History Published onli…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNovel, Highly Conducting, and Soluble Polymers from Anodic Coupling of Alkyl-Substituted Cyclopentadithiophene MonomersGianni Zotti, Gilberto Schiavon, Anna Berlin, Giovanni Fontana, and Giorgio PaganiCite this: Macromolecules 1994, 27, 7, 1938–1942Publication Date (Print):M…
The oxidation of carbon monoxide on a Pd(100) single-crystal catalyst was studied using an elevated-pressure IR cell/ultrahigh vacuum surface analysis system. The kinetics of the reaction was followed by monitoring the total pressure change during the course of the reaction. Simultaneously, the surface concentration o…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTForces between Hydrophobic Silanated Glass SurfacesJohn L. Parker and Per M. ClaessonCite this: Langmuir 1994, 10, 3, 635–639Publication Date (Print):March 1, 1994Publication History Published online1 May 2002Published inissue 1 March 1994https://pubs.acs.org/doi/10.1021/la0…
The polymerase chain reaction (PCR) has been used to amplify the portion of the Spidroin 1 gene that codes for the C-terminal part of the silk protein of the spider Nephila clavipes. Along with some substitution mutations of minor consequence, the PCR-derived sequence reveals an additional base missing from the previo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural analysis of polymer-protected platinum/rhodium bimetallic clusters using extended x-ray absorption fine structure spectroscopy. Importance of microclusters for the formation of bimetallic clustersMasafumi Harada, Kiyotaka Asakura, and Naoki ToshimaCite this: J. Ph…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTESR Study of Cobalt(II) Tetrakis(N-methyl-4-pyridiniumyl)porphyrin and Cobalt(II) Tetrasulfophthalocyanine Intercalated in Layered Aluminosilicates and a Layered Double HydroxideL. Ukrainczyk, M. Chibwe, T. J. Pinnavaia, and S. A. BoydCite this: J. Phys. Chem. 1994, 98, 10,…
A simple model is proposed to describe the electrooptic response of polymer dispersed liquid crystals. A hierarchy of order parameters is introduced to describe orientational order on different length scales. External fields reorient the liquid crystal in the inclusions, and thus alter the orientational order. The res…
The authors propose a novel structured magnetic thin film inductor using rotation magnetization only. The thin film inductor has a sandwich structure, which consists of a double-rectangular spiral coil between top and bottom CoZrNb amorphous thin films. The sputtered CoZrNb amorphous magnetic thin films have uniaxial…