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  • Chemical Engineering  (54)
  • FLUID MECHANICS  (49)
  • ASTROPHYSICS
  • Analytical Chemistry and Spectroscopy
  • Animals
  • Life and Medical Sciences
  • 1980-1984
  • 1970-1974  (154)
  • 1890-1899
  • 1971  (154)
Collection
Keywords
Publisher
Years
  • 1980-1984
  • 1970-1974  (154)
  • 1890-1899
Year
  • 1
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 17 (1971), S. 626-630 
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Experimental results are presented for saturated nucleate and film pool boiling heat transfer to ethane, ethylene, and three binary ethane-ethylene mixtures containing approximately 25, 50, and 75 mole % ethylene. Data were obtained at reduced pressures from 0.05 to 0.75. The nucleate boiling data are compared with several predictions; the film boiling data are favorably compared with the Sciance, Colver, and Sliepcevich correlation.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 17 (1971), S. 831-837 
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: No. Abstract.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 17 (1971), S. 837-842 
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: No. Abstract.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 17 (1971), S. 842-849 
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: No. Abstract.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 11 (1971), S. 353-360 
    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: Experimental studies were performed with low density polyethylene, acrylonitrile-butadiene-styrene polymers and on polyvinyl chloride to elucidate the nature of the plasticating process in a reciprocating-screw injection molding machine. Melting data, obtained by use of the “cooling experiment,” and plastic temperature data reveal that the screw recharge process is a transient plasticating extrusion process which gradually approaches the equilibrium extrusion behavior as the screw rotates. If the screw rotation time is a high percentage of the total cycle time, the plasticating behavior is very similar to steady-state extrusion behavior, but if the screw rotation time is a small percentage of the total cycle time, the plasticating behavior is significantly different. Furthermore, better plasticating is obtained by use of a low RPM and high percentage rotation time than by a high RPM and low percentage rotation time.
    Additional Material: 19 Ill.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 5 (1971), S. 453-461 
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Surface reactions of aldehydes and nitriles induced by high electric fields have been studied mass spectrometrically. Some general phenomena are demonstrated for the case of surface reactions of crotonaldehyde. The field ionization (FI) mass spectra of polar substances depend strongly on whether the organic micro needles on the FI emitter have a tight or a porous structure. Proton transfer reactions are observed with most of the polar substances. They can be reduced if the emitter surface is covered with a strongly adsorbed substance which does not react with the polar substance. The originally dense micro needle structure may change to a porous structure. The FI mass spectra of polar substances may then change drastically with time because of capillary condensation or multilayer formation.Raising the emitter temperature decreases the intensity of the fragment and dimeric ions of polar substances which form multilayers on the emitter surface. Thermal desorption of the multilayers reduces the number of reactions occurring therein. Even at high temperatures (750°C) the reduction of fragment intensities due to the multilayer removal is more pronounced than the increase of fragment intensities due to thermal bond rupture, provided that the C,N,O-skeleton of the molecules is composed of strong bonds like conjugated double bonds, or that it has a cyclic structure.It is shown that the FI mass spectra of benzonitrile are much simpler than those of some aliphaticnitriles, and that the mechanisms of field polymerization are different in both cases.
    Notes: Oberflächenreaktionen von Aldehyden und Nitrilen bei hoher elektrischer Feldstärke wurden rnassenspektrometrisch untersucht. Einige allgemeine Erscheinungen werden für den Fall von Oberflächenreaktionen von Crotonaldehyd aufgezeigt. Die Feldionisations Massenspektren (FI) polarer Substanzen hängen stark davon ab, ob die organischen Mikronadeln auf dem FI-Emitter eine dichte oder eine poröse Struktur hahen. Protonentransfer-Reaktionen werden mit den meisten polaren Substanzen beobachtet. Sie können reduziert werden, wenn die Emitteroberfläche mit einer stark adsorbierten Substanz bedeckt wird, die nicht mit der polaren Substanz reagiert. Die ursprünglich dichte Struktur der Mikronadel kann sich zu einer porösen Struktur wandeln. Die FI-Massenspektren polarer Substanzen können sich dann im Laufe der Zeit wegen Kapillarkondensation oder der Bildung von Multischichten drastisch verändern.Die Erhöhung der Emittertemperatur verringert die Intensität der Fragment- und dimeren Ionen der polaren Substanzen, die Multischichten auf der Emitteroberfläche bilden. Thermische Desorption der Multischichten verringert die Anzahl der in ihnen vorkommenden Reaktionen. Selbst bei hohen Temperaturen (750° C) ist die Reduzierung von Fragmentintensitäten infolge des Abbaus der Multischichten ausgeprägter als diezunahmevon Fragmentintensitäten infolge thermischer Bindungsbrüche, vorausgesetzt daß das C, N, O-Gerüst der Moleküle entweder aus starken Bindungen, wie konjugierten Doppelbindungen zusammengesetzt ist, oder da13 es eine zyklische Striktur hat.Es wird gezeigt, daß die FI-Massenspektren der Benzonitrile wesentlich einfacher sind als die einiger aliphatischer Nitrile, und daß die Mechanismen der Feldpolyrnerisation in beiden Fällen verschieden sind.
    Additional Material: 1 Ill.
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  • 8
    Publication Date: 2011-08-16
    Description: Shear stress and eddy viscosity distribution in Mach 20 compressible turbulent boundary layer, using mixing length flow theory
    Keywords: FLUID MECHANICS
    Type: ; IENCES (
    Format: text
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  • 9
    Publication Date: 2019-06-27
    Description: Analysis of propellant sloshing in lunar module during Apollo 14 flight and resultant erroneous indication of low level of propellant
    Keywords: FLUID MECHANICS
    Type: NASA-TM-X-2362 , L-7757
    Format: application/pdf
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  • 10
    Publication Date: 2019-06-27
    Description: Shear-stress, eddy-viscosity, and mixing-length distributions in hypersonic turbulent boundary layers using assumption of local similarity
    Keywords: FLUID MECHANICS
    Type: NASA-TM-X-2310 , L-7731
    Format: application/pdf
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