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  • 11
    Electronic Resource
    Electronic Resource
    Interpersonal relationships and personal space: Research review and theoretical model (1976)
    Springer
    Human ecology 4 (1976), S. 47-67 
    Details
    ISSN: 1572-9915
    Keywords: personal space ; interaction distance ; spatial invasions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Ethnic Sciences
    Notes: Abstract This article reviews research concerning interpersonal distance as a function of interpersonal relationships, attraction, and reactions to spatial invasion. To integrate research findings, we propose a simple model, based on the idea that people seek an optimal distance from others that becomes smaller with friends and larger for individuals who do not expect to interact. The model describes comfort-discomfort as a function of interaction distance in three situations: interacting friends, interacting strangers, and strangers who do not expect interaction. These three personal space profiles are discussed in terms of qualifying variables, such as seated vs. standing interaction, sex composition of the dyad, intimacy of conversation topics, and situational variables.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01531456
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    Paper (German National Licenses)
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  • 12
    Electronic Resource
    Electronic Resource
    A test of equilibrium theory: Effects of topic intimacy and proximity on verbal and nonverbal behavior in pairs of friends and strangers (1978)
    Springer
    Journal of nonverbal behavior 3 (1978), S. 3-16 
    Details
    ISSN: 1573-3653
    Source: Springer Online Journal Archives 1860-2000
    Topics: Psychology
    Notes: Abstract This experiment examined verbal and nonverbal behavior by pairs of female friends and strangers as they discussed either intimate or nonintimate topics at face-to-face distances of approximately 2.5 or 4.5 feet. On the basis of equilibrium theory and Altman and Taylor's (1973) theory about interpersonal exchange, strangers were expected to react to intimate topics or close proximity or both with discomfort and decreased affiliative behavior (facial regard, gesturing, speech). Friends were expected to show increased affiliative behavior. Results indicated that both strangers and friends showed signs of discomfort and low levels of affiliative behavior while discussing intimate topics, i.e.compensation. Discomfort with intimate topics and compensation decreased over time, indicatingadaptation. This finding suggests that compensation for intimate topics may occur only during the initial phases of an encounter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01114528
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    Paper (German National Licenses)
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  • 13
    Electronic Resource
    Electronic Resource
    Response of biological reactors to sinusoidal variations of substrate concentration (1976)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 18 (1976), S. 1-14 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A well-mixed biological reactor with continuous addition of biological solids was subjected to sinusoidal variations in inlet substrate concentration. The phase lag between inlet and outlet concentrations increased with increasing frequency. The deviation of measured substrate concentrations from initial steady-state concentrations was observed to have a maximum near a frequency of 1 cycle per residence time. Measured concentrations of substrate and biomass in the reactor differed significantly from concentrations predicted by the Monod kinetic model.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260180102
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    Paper (German National Licenses)
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  • 14
    Electronic Resource
    Electronic Resource
    Immobilization of glucose oxidase on macroreticular ion exchange resins (1978)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 20 (1978), S. 611-617 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260200413
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  • 15
    Electronic Resource
    Electronic Resource
    Softening rates for polystyrene under shear conditions (1978)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 18 (1978), S. 422-426 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The processing of thermoplastics often requires conversion of a solid to a viscous fluid under shear conditions. In this study, solid blocks of polystyrene were softened on a hot, moving surface over a range of surface temperatures and velocities. The conservation equations for mass, momentum, and energy were applied to the fluid layer and simplified by an order of magnitude analysis. An integral method of solution was developed which predicted rates of softening that agreed closely with the measured rates.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760180515
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  • 16
    Electronic Resource
    Electronic Resource
    Melting rates of crystalline polymers under shear conditions (1972)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 12 (1972), S. 59-63 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The melting of solids under shear conditions is an important operation in the processing of most thermoplastics. In this study, solid blocks of high density polyethylene were melted on a hot, moving surface over a range of surface temperatures and velocities. The conservation equations for mass, momentum, and energy were applied to the molten layer and then simplified by an order of magnitude analysis. A general model that included all significant terms gave rates of melting that agreed closely with the measured rates. A simpler model that was analogous to present extruder models predicted melting rates that were ten to twenty-five percent lower than the experimental values. Models for polymers with low to moderate crystallinity should be modified to account for physical removal of amorphous material by shear forces.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760120110
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    Paper (German National Licenses)
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  • 17
    Electronic Resource
    Electronic Resource
    Kinetics and flow of diallyl phthalate resins (1978)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 18 (1978), S. 728-733 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The analysis of molding operations for thermosetting polymers requires knowledge of the rheology and reaction rates of the materials. The purpose of this research was to measure kinetic and rheological data on diallyl phthalate resins and to integrate these results into models describing the flow behavior. The chemical kinetics of the curing reactions were derived from calorimetric measurements taken with a differential scanning calorimeter. The rheological data were measured with a mechanical spectrometer equipped with eccentric rotating discs. A model based on the theory of ideal rubber elasticity was used to correlate the elastic storage modulus with reaction time and temperature. For the region below the gel point, the dynamic viscosity exhibited a power law dependence on angular frequency and an Arrhenius dependence on temperature.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760180908
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  • 18
    Electronic Resource
    Electronic Resource
    Kinetics of wet oxidation of nylon 66 (1976)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 20 (1976), S. 207-216 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The kinetics of the aqueous phase oxidation of nylon 66 was studied at temperatures up to 190°C. The nylon 66, in the form of a cylindrical disc, was attached to the shaft of a variable-speed drive inside the reactor. With a rotating disc geometry, the chemical kinetics of the surface reaction can be separated from the mass transfer effects. By measuring the reaction rates at different temperatures, pressures, and disc rotational speeds, a kinetic rate expression was developed relating nylon degradation to dissolved oxygen concentration and temperature. The order of reaction with respect to dissolved oxygen concentration was 0.6, and the activation energy was 42 kcal/g-mole.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1976.070200118
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  • 19
    Electronic Resource
    Electronic Resource
    Thermal conductivity of polymers filled with particulate solids (1972)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 16 (1972), S. 3159-3167 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The thermal conductivities of polystyrene and polyethylene containing several different particulate solids were measured over a range of solid concentrations. Experimental data were compared with results predicted by theoretical models for two-phase media. The equations of Bruggeman and Cheng-Vachon both gave reasonable agreement with measured results. The applicability of these equations does not appear to depend upon the structure of the polymer.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1972.070161210
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