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  • 1
    Electronic Resource
    Electronic Resource
    Kinetics of the nitric oxide + carbon monoxide reaction on clean platinum: steady-state rates (1985)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 89 (1985), S. 4908-4914 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100269a006
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  • 2
    Electronic Resource
    Electronic Resource
    Formation of interface traps in metal-oxide-semiconductor devices during isochronal annealing after irradiation at 78 K (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 7434-7442 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have studied the mechanisms of interface trap (Nit) formation in metal-oxide-semiconductor devices during isochronal annealing after irradiation at 78 K. Two distinct Nit formation processes are observed at 120 and 250 K. After irradiation but before annealing, some samples were injected with electrons to remove all the radiation-induced positive oxide charges. In these samples, the Nit formation process at 250 K is nearly eliminated, in agreement with previous reports, but the lower-temperature 120 K process increases substantially. Results are explained using a hydrogen model. We also discuss the use of substrate hot-electron injection, which is used to annihilate the radiation-induced positive charge, in some detail.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.349739
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  • 3
    Electronic Resource
    Electronic Resource
    Concentration profiles of a colloidal mixture near a charged wall (1991)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 95 (1991), S. 2006-2011 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The structure of a model two-component colloidal mixture in the vicinity of a charged wall is studied in the framework of the Derjaguin–Landau–Verweg–Overbeek potential and the hypernetted-chain approximation for the particle–particle and wall–particle direct correlation functions as the closure for the bulk and wall–particle Ornstein–Zernike equations. It is found that for strongly repulsive walls the structure of the inhomogeneous mixture near the wall only depends on the bulk parameters. For neutral and attractive walls, a monolayer of colloidal particles adjacent to the wall is formed. Depending on the charge asymmetry between the two colloidal species, the composition of this monolayer indicates a preferential electrostatic adsorption of the more highly charged species. For large charge asymmetry between the two species, a distinct segregation effect is predicted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.461804
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  • 4
    Electronic Resource
    Electronic Resource
    Complex Carbohydrate Composition of Large Dense-Cored Vesicles from Sympathetic Nerve (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 49 (1987), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Highly purified noradrenergic, large, dense-cored vesicles were isolated from bovine sympathetic nerve endings by sucrose-D2O density gradient centrifugation. Their concentration of glycoprotein hexosamine and sialic acid was 6.6 and 3.9 μmol/100 mg lipid-free dry weight, respectivly. values which are similar to those previously found in vine chromaffin granules. However, whereas chromaffin granule glycoproteins are characterized by their high proportion of N-acetylgalactosamine-containing O-glycosidically-linked oligosaccharides (present in the chromo-granins), such oligosaccharides accounted for only 17% of those in noradrenergic synaptic vesicle glycoproteins. Fractionation of N-3H-acetylated glycopeptides by sequential lectin affinity chromatography demonstrated that approxi-mtely two-thirds of the oligosaccharides were of the triand tetraantennary complex type, accompanied by 14% biantennary oligosaccharides and 3% high-mannose oligosaccharides. The vesicles had a relatively low concentration of chondroitin sulfate (less than 5% of that in chromaffin granules) but significant amounts of heparan sulfate (0.4 μmol N-acetylglucosamine/100 mg lipid-free dry weight). No hyaluronic acid was detected. The concentration of ganglioside sialic acid in the noradrenergic vesicles was approximately 1 μmol/100 mg lipid-free dry weight, which is significantly higher than that of a crude membrane mixture from which the vesicles were prepared; the ratio of N-acetyl-to N-glycolylneuraminic acid was 0.8. Several molecular species of gangliosides were detected by thin-layer chromatography, but most of these did not exactly comigrate with bovine brain gangliosides. Cholera toxin binding indicated that approximately half or less of the gangliosides belong to the gangliotetraose series.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.1987.tb02445.x
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  • 5
    Electronic Resource
    Electronic Resource
    Photomultiplier housing for vacuum operation of side-on 1P28-type tubes (1990)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 61 (1990), S. 1558-1560 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A design for the mounting of a side-on tube such as the 1P28 type which has proven simple to construct, reliable, and convenient is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1141173
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  • 6
    Electronic Resource
    Electronic Resource
    Understanding colloidal charge renormalization from surface chemistry: Experiment and theory (1994)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 101 (1994), S. 9924-9936 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: In this paper we report on the charging behavior of latex particles in aqueous suspensions. We use static light scattering and acid–base titrations as complementary techniques to observe both effective and bare particle charges. Acid–base titrations at various ionic strengths provide the pH dependent charging curves. The surface chemical parameters (dissociation constant of the acidic carboxylic groups, total density of ionizable sites and Stern capacitance) are determined from fits of a Stern layer model to the titration data. We find strong evidence that the dissociation of protons is the only specific adsorption process. Effective particle charges are determined by fits of integral equation calculations of the polydisperse static structure factor to the static light scattering data. A generalization of the Poisson–Boltzmann cell model including the dissociation of the acidic surface groups and the autodissociation of water is used to predict effective particle charges from the surface chemical parameters determined by the titration experiments. We find that the light scattering data are best described by a model where a small fraction of the ionizable surface sites are sulfate groups which are completely dissociated at moderate pH. These effective charges are comparable to the predictions by a basic cell model where charge regulation is absent. © 1994 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.467894
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  • 7
    Electronic Resource
    Electronic Resource
    Reaction rate determinations of vinyl radical reactions with vinyl, methyl, and hydrogen atoms (1991)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 95 (1991), S. 3218-3224 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100161a047
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  • 8
    Electronic Resource
    Electronic Resource
    On self-diffusion in a water-in-oil microemulsion (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 87 (1987), S. 2990-2998 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The self-diffusion coefficient Ds is calculated to first order in volume fraction for a water-in-oil microemulsion model. Assuming spherical droplets, the interaction consists of hard-core repulsions, an attractive square-well potential due to overlapping surfactant tails, and hydrodynamic interactions. The latter are described by high-order series expansions outside the range of the attractive potential, whereas simplifying assumptions are made inside the range of overlapping. Within this model, expressions for Ds are derived in terms of the depth V0 of the attractive potential, the ratio of the range of overlapping to the radius of the hard cores, and a parameter describing the hydrodynamic interaction. Assuming a linear relation between V0 and the droplet radius the initial slope of Ds vs the volume fraction becomes more negative when V0 increases. A similar behavior is found if V0 increases at constant droplet radius. These results are compared to those obtained without hydrodynamic interactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.453035
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  • 9
    Electronic Resource
    Electronic Resource
    The pair-distribution function and light-scattered intensities for charged rod-like macromolecules in solution (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 87 (1987), S. 3008-3015 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The pair-distribution function of charged rods in a dilute solution is studied for several rod lengths and charges. The interaction energy in the Monte Carlo simulations is a sum over screened Coulomb potentials of beads, which constitute the rod. Two or three beads per rod were used. For short rods a perturbation theory is given to obtain an analytic expression for the pair-distribution function. There is a good agreement between this perturbation theory and the Monte Carlo simulations. These results are then used to calculate the polarized and depolarized structure factors for thin charged rods with an anisotropic polarizability. It turns out that the static structure factors are essentially independent of the magnitude of the anisotropic polarizability in the range which is experimentally accessible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.453037
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  • 10
    Electronic Resource
    Electronic Resource
    Structure of binary colloidal mixtures of charged and uncharged spherical particles (1992)
    s.l. : American Chemical Society
    Langmuir 8 (1992), S. 2913-2920 
    Details
    ISSN: 1520-5827
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/la00048a012
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