The equation of bubble dynamics in a compressible liquid
An equation accounting to lowest order for the effects of liquid compressibility on the radial motion of a spherical bubble is deduced from the statement of energy conservation for the liquid.
Materials Literature
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On the Anomalous Self‐Diffusion in B.C.C. Titanium
Abstract Self‐diffusion of 44 Ti is measured in β‐Ti under UHV conditions in the whole range of existence of the b.c.c. phase. The Arrhenius plot shows a strong upward curvature in agreement with previous investigations of Murdock et al. The anomalous diffusion behaviour is related to the experimentally observed softe…
The mechanisms of H2 activation and CO binding by hydrogenase I and hydrogenase II of Clostridium pasteurianum.
Hydrogenase I (bidirectional) and hydrogenase II (uptake) of Clostridium pasteurianum have been investigated by electron paramagnetic resonance (EPR) spectroscopy, in the presence and absence of the inhibitor, CO. These hydrogenases contain both a novel type of iron-sulfur cluster (H), which is the proposed site of H2…
Microbial Reduction of Structural Iron(III) in Smectites
Abstract Octahedral Fe(III) in the crystal structures of three different smectites was reduced to Fe(II) by actively growing microorganisms indigenous to the clay. The smectites were SWa‐1 ferruginous smectite from Grant County, Washington; API 33a, Garfield Nontronite; and API 25, Upton montmorillonite. Bacterial gro…
Structural Role of Zinc Oxide in Silica and Soda‐Silica Glasses
The structures of amorphous zinc silicate and sodium zinc silicate have been studied using the molecular dynamics computer simulation technique. Results showed that bond lengths and coordination numbers for the individual atomic species fit within the range of results from a number of crystalline and glassy silicates.…
Evidence for short-range orientational couplings between chain segments in strained rubbers: a deuterium magnetic resonance investigation
International audience
Starburst polyether dendrimers
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStarburst polyether dendrimersAnne Buyle Padias, H. K. Hall Jr., Donald A. Tomalia, and J. R. McConnellCite this: J. Org. Chem. 1987, 52, 24, 5305–5312Publication Date (Print):November 1, 1987Publication History Published online1 May 2002Published inissue 1 November 1987http…
Photochemical hydrogen evolution via singlet-state electron-transfer quenching of zinc tetra(N-methyl-4-pyridyl)porphyrin cations in a zeolite L based system
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemical hydrogen evolution via singlet-state electron-transfer quenching of zinc tetra(N-methyl-4-pyridyl)porphyrin cations in a zeolite L based systemLalchan Persaud, Allen J. Bard, Alan Campion, Marye Anne Fox, Thomas E. Mallouk, Stephen E. Webber, and J. M. WhiteCit…
In-Plane Flow of Fluids in Fabrics: Structure/Flow Characterization
A technique that quantifies the in-plane flow properties of fibrous networks is pre sented. A radial flow geometry allows the simultaneous study of more than one in- plane flow direction. The shape and position of a radially advancing fluid front define directional permeabilities in the plane, which can be used to com…
Ordered packing arrangements of spherical micelles of diblock copolymers in two and three dimensions
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrdered packing arrangements of spherical micelles of diblock copolymers in two and three dimensionsEdwin L. Thomas, David J. Kinning, David B. Alward, and Chris S. HenkeeCite this: Macromolecules 1987, 20, 11, 2934–2939Publication Date (Print):November 1, 1987Publication Hi…
Corrosion, layer formation, and oxide reduction of passive iron in alkaline solution: a combined electrochemical and surface analytical study
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCorrosion, layer formation, and oxide reduction of passive iron in alkaline solution: a combined electrochemical and surface analytical studyS. Haupt and H. H. StrehblowCite this: Langmuir 1987, 3, 6, 873–885Publication Date (Print):November 1, 1987Publication History Publis…
Inversion of the cyclotribenzylene cone in a columnar mesophase: a potential way to ferroelectric materials
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInversion of the cyclotribenzylene cone in a columnar mesophase: a potential way to ferroelectric materialsJacques Malthete and Andre ColletCite this: J. Am. Chem. Soc. 1987, 109, 24, 7544–7545Publication Date (Print):November 1, 1987Publication History Published online1 May…
Transformation of native cellulose crystals induced by saturated steam at high temperatures
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTransformation of native cellulose crystals induced by saturated steam at high temperaturesFumitaka Horii, Hiroyuki Yamamoto, Ryozo Kitamaru, Mitsuhiko Tanahashi, and Takayoshi HiguchiCite this: Macromolecules 1987, 20, 11, 2946–2949Publication Date (Print):November 1, 1987P…
Magnetostatic interaction fields for a three-dimensional array of ferromagnetic cubes
An exact analytic formula for the magnetostatic interaction energy of a three-dimensional array of ferromagnetic cubes is presented. The magnetization within each cube is assumed constant but varies in direction from cube to cube. From the expressions for the interaction energy, exact formulas for the effective magnet…
Self-diffusion of Brownian particles in concentrated suspensions under shear
The self-diffusivity of Brownian hard spheres in a simple shear flow is studied by numerical simulation. Particle trajectories are calculated by Stokesian dynamics, with an accurate representation of the suspension hydrodynamics that includes both many-body interactions and lubrication. The simulations are of a monola…
How Nature Adapts Chemical Structures to Curved Surfaces
Abstract Guided by the symmetry in a natural way, periodic potential surfaces partition the space in solid crystalline compounds. The arrangement of atoms, clusters and molecules obviously follows the (in general) curved shape of these ‘space partitioners’. In structures, the atoms therefore choose only a very limited…
Molecular architecture of rabbit skeletal muscle aldolase at 2.7-A resolution.
The molecular architecture of the rabbit skeletal muscle aldolase (D-fructose-1,6-bisphosphate D-glyceraldehyde-3-phosphate-lyase, EC 4.1.2.13) tetramer has been determined to 2.7-A resolution. Solution of the three-dimensional structure of rabbit muscle aldolase utilized phase information from a single isomorphous Pt…
Atomic Level Stresses in Solids and Liquids
Abstract In condensed matter systems there are, in general, stresses at atomic level which are related to local incompatibilities. Only in perfect crystals in which all the atoms are equivalent such incompatibilities do not exist but they are present in ordered structures with non‐equivalent atoms and in any disordere…
Glass transition and melting behavior of poly(thio-1,4-phenylene)
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGlass transition and melting behavior of poly(thio-1,4-phenylene)Stephen Z. D. Cheng, Zong Quan Wu, and Bernhard WunderlichCite this: Macromolecules 1987, 20, 11, 2802–2810Publication Date (Print):November 1, 1987Publication History Published online1 May 2002Published inissu…
Infrared and x-ray photoelectron spectroscopy study of carbon monoxide and carbon dioxide on platinum/ceria
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfrared and x-ray photoelectron spectroscopy study of carbon monoxide and carbon dioxide on platinum/ceriaT. Jin, Y. Zhou, G. J. Mains, and J. M. WhiteCite this: J. Phys. Chem. 1987, 91, 23, 5931–5937Publication Date (Print):November 1, 1987Publication History Published onl…