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  • Chemistry  (1,899)
  • Industrial Chemistry  (282)
  • Inorganic Chemistry  (259)
  • Aircraft Stability and Control  (4)
  • 1950-1954  (1,903)
  • 1951  (1,903)
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  • 1950-1954  (1,903)
Year
  • 1
    Publication Date: 2019-07-11
    Description: Buffet boundaries, buffeting-load increments for the stabilizers and elevators, and buffeting bending-moment increments for the stabilizers and wings as measured in gradual maneuvers for a jet-powered bomber airplane are presented. The buffeting-load increments were determined from strain-gage measurements at the roots or hinge supports of the various surfaces considered. The Mach numbers of the tests ranged from 0.19 to 0.78 at altitudes close to 30,000 feet. The predominant buffet frequencies were close to the natural frequencies of the structural components. The buffeting-load data, when extrapolated to low-altitude conditions, indicated loads on the elevators and stabilizers near the design limit loads. When the airplane was held in buffeting, the load increments were larger than when recovery was made immediately.
    Keywords: Aircraft Stability and Control
    Type: NACA-RM-L50I06
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  • 2
    Publication Date: 2019-07-11
    Description: A flight investigation has been made to determine the external drag and pressure recovery of a 1/8.25 - scale flight model of the Consolidated Vultee XF-92 from Mach numbers 0.7 to 1.4 and Reynolds numbers from 8.5 x 10(exp 6) to 19.2 x 10(exp 6) at or near zero lift. Relative mass flow, average pressure recovery, total drag, internal drag, and external drag are presented as functions of Mach number. Between Mach numbers of 0.90 and 0.975, the external drag of the configuration (including base drag of the inner body and additive drag) was about equal to that of a similar model with a faired nose and no mass flow; however, at supersonic speeds the drag coefficient for the faired-nose model remained relatively constant whereas the drag coefficient for the ducted model continued to increase sharply. The internal drag coefficient of the duct was roughly constant at 0.013 up to a Mach number of 1.20; after which it decreased to 0.0075 at a Mach number of 1.4. The over-all pressure recovery of the inlet and duct varied from 94 percent at a Mach number of 0.7 to about 91 percent at a Mach number of 1.4 at a relative-mass-flow ratio of about 0.30. The losses in pressure recovery were believed to be caused by the possible occurrence of separation of flow from the inner body and by an aerodynamically unclean internal configuration which did not duplicate the form proposed for the original XF-92 airplane.
    Keywords: Aircraft Stability and Control
    Type: NACA-RM-SL51E23
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  • 3
    Publication Date: 2019-07-11
    Description: An investigation of the low-speed, power-off stability and control characteristics of a 1/10-scale model of the Douglas XF4D-1 airplane has been made in the Langley free-flight tunnel. The model was flown with leading-edge slats retracted and extended over a lift-coefficient range from 0.5 to the stall. Only relatively low-altitude conditions were simulated and no attempt was made to determine the effect on the stability characteristics of freeing the controls. The longitudinal stability and control characteristics of the model were satisfactory for all conditions investigated except near the stall with slats extended, where the model had a slight nosing-up tendency. The lateral stability and control characteristics of the model were considered satisfactory for all conditions investigated except near the stall with slats retracted, where a change in sign of the static- directional-stability parameter Cn(sub beta) caused the model to be directionally divergent. The addition of an extension to the top of the vertical tail did not increase Cn(sub beta) enough to eliminate the directional divergence of the model, but a large increase in Cn(sub beta) that was obtainable by artificial means appeared to eliminate the divergence and flights near the stall could be made. Artificially increasing the stability derivative-Cn(sub r) (yawing moment due to yawing) and Cn(sub p) (yawing moment due to rolling) had little effect on the divergence for the range of these parameters investigated. Calculations indicate that the damping of the lateral oscillation of the airplane with slats retracted or extended will be satisfactory at sea level but will be only marginally satisfactory at 40,000 feet.
    Keywords: Aircraft Stability and Control
    Type: NACA-RM-SL51J22
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  • 4
    Publication Date: 2019-07-11
    Description: A flight investigation has been made to determine the drag and longitudinal stability of a 1/10- scale model of the Douglas XF4D-1 airplane from Mach numbers 0.7 to 1.4 at lift coefficients near zero. The drag rise occurred near M = 0.95. The external drag coefficient was a constant value of about 0.012 at subsonic speeds up to the point of drag rise where it increased abruptly to a value of 0.030 at M = 1.0 followed by a more gradual increase to a value of 0.038 at M = 1.25. The model indicated that, at 35,000 feet and a level-flight free-stream Mach number of 1.0, the drag of the full-scale airplane would exceed the thrust available from an XJ40-WE-8 engine with after-burning. The transonic trim change was small. The aerodynamic center moved gradually from the most forward location of 21.0-percent mean aerodynamic chord at M = 0.9 to the most rearward location of 40-percent mean aerodynamic chord at M = 1.25. The damping in pitch was low.
    Keywords: Aircraft Stability and Control
    Type: NACA-RM-SL51L07
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  • 5
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    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 23 (1951) 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 6
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die im folgenden erörterten Fragen sind nicht nur deswegen Grenzprobleme, weil es sich bei ihnen um Transportvorgänge durch Phasengrenzen handelt. Vielmehr bildet dieses Gebiet auch eine Berührungsgrenze zwischen den Ingenieurwissenschaften und der physikalischen Chemie. Von erstgenannter Seite wurde der betreffende Fragenkreis in letzter Zeit mehrfach zusammenfassend dargestellt1. Hier möge er mehr vom Standpunkt der physikalischen Chemie aus und unter Bevorzugung der bisher noch nicht befriedigend gelösten Probleme behandelt werden. Gerade dieses Gebiet ist besonders geeignet, die Fruchtbarkeit einer Zusammenarbeit beider Wissenschaften im Rahmen der Verfahrenstechnik aufzuzeigen.
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  • 7
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 21-22 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 8
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 23-24 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 9
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 24-24 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 10
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 27-27 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 11
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 24-25 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 12
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 28-32 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 13
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 57-58 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Verwendung von Spezialgraphit hat bei Absorbern und Verbrennungsöfen für die Chlorwasserstoff-Synthese zu wesentlich leistungsfähigeren und raumsparenden Konstruktionen geführt, über die nachfolgend berichtet wird.
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  • 14
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 59-64 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die bisher vorliegenden Meßergebnisse für die Wärmeleitfähigkeit der wäßrigen Lösungen von Salzen, Säuren und Basen werden kritisch verglichen und in einheitlicher Form dargestellt. Auf Grund einfacher theoretischer Betrachtungen ist es möglich, diese wichtige Größe für zahlreiche noch nicht untersuchte Lösungen zuverlässig abzuschätzen.
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  • 15
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 68-68 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 16
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 68-72 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 17
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 73-75 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 18
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 72-72 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 19
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 75-76 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 20
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 72-72 
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    Keywords: Chemistry ; Industrial Chemistry
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  • 21
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    Chemie Ingenieur Technik - CIT 23 (1951) 
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    Keywords: Chemistry ; Industrial Chemistry
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  • 22
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 76-80 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 23
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 111-111 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 24
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 112-113 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Im Laufe von Untersuchungen über die Phasengleichgewichte in ternären und polynären Systemen war es notwendig, die Löslichkeit von Kohlenwasserstoffen in Methyl- und Benzylalkohol zu untersuchen. Außer Gesichtspunkten allgemeiner Natur spielte bei dieser Arbeit auch die Erwägung eine Rolle, gegebenenfalls neue analytische und präparative Möglichkeiten zu gewinnen.
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  • 25
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 113-115 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Um die Fragen nach dem Kältebedarf und der zweckmäßigsten Soletemperatur bei der Ausrüstung von Kunstfaserfabriken mit Kältemaschinenanlagen zu klären, wurden Untersuchungen an Xanthatknetern durchgeführt, über die nachstehend berichtet wird.
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  • 26
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: An zahlreichen Beispielen wird gezeigt, daß die Normung in der Verfahrenstechnik und im Apparatebau sich nicht allein auf Größe und Form von Flanschen, Rohren, Nieten und anderen Maschinenelementen beschränken darf, sondern daß sie zweckmäßigerweise auch ganze Apparaturen umfassen sollte.
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  • 27
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 116-117 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 28
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 120-120 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 29
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 120-120 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 30
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 139-141 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 31
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 141-141 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 32
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Bei dem in der vorliegenden Arbeit erstmalig gelösten Festigkeitsproblem handelt es sich um Fragen, die bei der Berechnung solcher Hochdruckrohre von Bedeutung sind, die im Gegensatz zu den bisher verwendeten geschmiedeten Massivrohren aus einem dünnwandigen Kernrohr bestehen, auf das  -  je nach der Höhe des Innendrucks  -  eine mehr oder weniger große Zahl von Bändern aufgewickelt wird. Außerdem spielt das Problem auch bei anders gearteten Aufgaben eine Rolle, auf die kurz hingewiesen wird.
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  • 33
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    Chemie Ingenieur Technik - CIT 23 (1951) 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 34
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 147-152 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 35
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 157-160 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Bei Vollschmierung ist die Temperaturabhängigkeit der Viscosität von großer Bedeutung, für deren Charakterisierung besondere Kennziffer-Systeme entwickelt wurden. Die gebräuchlichen Systeme versagen jedoch bei sehr niedrigviscosen Flüssigkeiten, bei Ölen mit sehr flacher oder sehr steiler Viscositäts-Temperatur-Kurve und bei Ölen mit hoher Dichte. In diesen Fällen sind die Normalöl-Relation bzw. die Normalöl-Proportion besser geeignet.
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  • 36
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 165-165 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: Auf Grund der Margulesschen Interpolationsformeln zur Berechnung der Dampfdrucke von Zweistoffgemischen bei konstanter Temperatur wird gezeigt, daß sich ganz allgemein der Trennfaktor als eine Exponentialfunktion mathematisch darstellen läßt. Ihr Exponent ist eine Funktion von Koeffizienten, deren Größe wichtige Schlüsse auf das allgemeine physikalisch-chemische Verhalten von Zweistoffgemischen zu ziehen gestattet. Die mathematische Darstellung läßt sich auch auf die üblichen Gleichgewichtskurven bei konstantem Druck anwenden. Mehrere praktische Beispiele bekannter Kurven werden mathematisch dargestellt.
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 171-171 
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  • 38
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Versuche über den Wärmeübergang in Rührgefäßen, vor längerer Zeit beim Werk Hoechst der ehemaligen I.G. Farbenindustrie A.G. durchgeführtDie Versuche wurden auf Anregung von Dr.-Ing. S. KießKalt in den Jahren 1935/38 unter Leitung des Verfassers durchgeführt. Die Messungen machten die herren Dipl.-Ing. D. Bachmann, O. Kramer und F. Bieger., werden hier erstmals veröffentlicht und dabei verglichen mit Messungen über den Wärmeübergang an Modellapparaten von Chilton, Drew und Jebens bei der E. J. Du Pont de Nemours u. Comp., Wilmington, Del., sowie von Cummings und West bei der Rohm & Haas Comp., Philadelphia. Das Problem des Wärmeaustausches bei verschiedener Rührerdrehzahl und Temperatur ist nunmehr mit praktisch genügender Genauigkeit gelöst.
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 194-194 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Für die Synthese am Eisenkatalysator sind die Art der Inbetriebnahme und die Betriebsbedingungen von ausschlaggebender Bedeutung. Es werden die Probleme der Formierung und der von den Betriebsbedingungen abhängigen Arbeitsweise des Katalysators dargelegt. Für drei der entwickelten Syntheseverfahren werden in zahlenmäßig belegten Beispielen die Ergebnisse und die Betriebsbedingungen mitgeteilt.
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  • 41
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 195-196 
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 196-200 
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  • 44
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 272-276 
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    Notes: Es wurden ein i, s-Diagramm sowie eine Druck- und eine Temperaturtafel für das Sattdampf-Gebiet von Benzol aufgestellt. Berechnungsgrundlagen, Diagramm und Tafeln werden nachstehend wiedergegeben.
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 276-278 
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 278-278 
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    Notes: Die Kunstfaser-Herstellung beruhte bis zur Mitte der 20iger Jahre dieses Jahrhunderts auf reiner Empirie. Wissenschaftliche Forschungsarbeit von Chemikern und Ingenieuren haben dann aber die Technik der Kunstfaser-Erzeugung teilweise grundlegend geändert. Moderne Kunstfaser-Erzeugungsanlagen kombinieren die ursprünglich zahlreichen einzelnen Arbeitsprozesse zu einem kontinuierlichen Betrieb. Die verfahrenstechnischen wirtschaftlichen Auswirkungen dieser Entwicklung werden dargestellt.
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 281-281 
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 282-282 
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 283-288 
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    Notes: Mittels der Diasolyse lassen sich die Arbeitsverfahren zur Gewinnung von Wirkstoffen aus Pflanzen oder tierischen Produkten bedeutend vereinfachen. Zur Diasolyse im Laboratoriumsmaßstab eignet sich besonders der Diasolyseaufsatz, während die Diasolyseapparatur auch in halbtechnischen und technischen Ausmaßen erstellt werden kann. Zur Vorbehandlung der Ausgangsmaterialien läßt sich der Extraktionsapparat verwenden.
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    Notes: Die nachfolgend abgeleiteten Formeln für den Druckverlust sind von größter Allgemeingültigkeit und lassen sich nicht nur auf alle möglichen Füllkörperformen und -größen, sondern auch auf die verschiedensten Füllkörper- und Schüttgutgemenge übertragen. Die meisten der in der Praxis auftretenden Fälle lassen sich in zwei große Gruppen, und zwar in Säulen mit abgerundeten und mit scharfkantigen Füllkörpern einordnen, für die sich annähernd die gleichen Widerstandsbeiwerte ergeben. Eine Berechnung der Druckverluste ist auch im Falle der Berieselung mit ausreichender Genauigkeit möglich.
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 296-298 
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    Notes: Es werden drei Verfahren zur Entsalzung von Meerwasser beschrieben. Das Ausfrieren in Blockzellen mit und ohne Luftbewegung befriedigt nicht. Das Ringzellenverfahren mit temperiertem Schleudern und Abdecken sowie das Rührgefrierverfahren mit Schleudern und Abdecken ergeben befriedigende Salzkonzentrationen von 0,14%, was für Trinkwasserzwecke geeignet ist.
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    Notes: Es wird eine vielstufige, auch zur Verarbeitung größerer Mengen geeignete Verteilungsapparatur beschrieben, die durch große Anpassungsfähigkeit und leichte Zugänglichkeit aller Teile gekennzeichnet ist. Nach der Beschickung arbeitet die Apparatur vollautomatisch, fast ohne Wartung. Sie ist vornehmlich für präparative Zwecke geeignet.
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    Notes: In Analogie zu den Destillations- bzw. Dampflinien der einfachen Destillation werden Rektifikations- bzw. Destillatlinien definiert, welche die Änderung der Zusammensetzung des Destillationsrückstandes (Blaseninhalts) bzw. des Destillats während der Rektifikation homogener Dreistoffgemische angeben. Die Diskussion der Differentialgleichung der Rektifikationslinien für die Umgebung der Eckpunkte des Darstellungsdreiecks und der binären azeotropen Punkte erlaubt die Aufstellung allgemeiner Gesetze, denen die Rektifikationslinienscharen gehorchen. Auf diese Weise läßt sich aus dem Destillationslinienfeld der Charakter des zugehörigen Rektifikationslinienfeldes für ein gegebenes Rücklaufverhältnis und eine gegebene Bodenzahl ableiten. Mit den Rektifikationsdiagrammen lassen sich alle Experimente deuten, die mit wirksamen Kolonnen an z. T. komplizierten Dreistoffgemischen durchgeführt worden sind. Das zeitweilige Sinken der Siedetemperatur des Destillats und andere Erscheinungen, für die es kein Analogon bei Zweistoffgemischen gibt, werden im Rahmen der vorliegenden Theorie verständlich. Eigene Rektifikationsversuche an dem System Methanol-Aceton-Chloroform bestätigen die Richtigkeit der behaupteten Zusammenhänge.
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    Notes: Nach einem Hinweis auf die Bedeutung kontinuierlicher Sauerstoff-Registrierungen in den Betriebswässern von Hochdruckkraftwerken wird eine neue elektrische Sauerstoff-Meßanlage beschrieben, die sich im Kraftwerksbetrieb bei Sauerstoff-Gehalten zwischen 5 und 60 γ/l bereits bewährt hat. Die Umeichung der elektrischen Werte auf γO2/l wird mit der Tolidin-Rhodanid-Methode vorgenommen.
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    Notes: Das beschriebene einfache stabförmige pH-Mcßgerät mit trockener Antimon-Silberchlorid-Kette kann direkt in die Meßflüssigkeit eingetaucht werden. Der pH-Wert ist sofort auf einem technischen Drehspulinstrument abzulesen, das an die Kette ohne weitere Zwischenglieder angeschlossen wird. Die Polarisierbarkeit ist infolge der stark vergrößerten Oberfläche der Silberchlorid-Elektrode nur gering. Es können 15 × 10-6 A zum Betriebe eines technischen Anzeigeinstrumentes dauernd entnommen werden. Einige Anwendungsfälle werden besprochen.
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    Notes: Im folgenden wird vor allem das Warmverformen von Rohren und Rohrverbindungen aus Plexiglas besprochen. Bewährte Anwendungsbeispiele von Plexiglas in der chemischen Industrie werden gezeigt.
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    Notes: Es wird über die praktische Anwendung des bei der BASF von Wolf und Rumpf entwickelten Wirbelsichters berichtet. Die Sichtwirkung wird dabei durch eine ebene spiralförmige Luftströmung erzielt, die rechnerisch genau zu erfassen ist. Die Hauptanwendungsgebiete des Sichters, die Möglichkeiten zur Regelung der Korngrenze sowie die Schwierigkeiten, die durch schlechte Dispergierung mancher Sichtgüter, Verschleiß des Sichters usw. auftreten, werden eingehend besprochen.
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    Notes: Die Wärmeleitfähigkeit der Gemische von Methyl-, Äthyl-, Normalpropyl- und Isopropylalkohol, Äthylen- und Propylenglykol, Glycerin und Aceton mit Wasser wurde in Abhängigkeit von der Konzentration und Temperatur gemessen. Die Ergebnisse werden in übersichtlichen Tabellen zusammengefaßt und mit den bereits vorliegenden Literaturwerten kritisch verglichen. Die von W. Kraus [10] beobachtete Anomalie im Temperaturverlauf der Wärmeleitfähigkeit von reinem Äthylen- bzw. Propylenglykol konnte nicht bestätigt werden.
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  • 92
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Vervollkommnung und konstruktive Durchbildung moderner Maschinen verlangt einen wartungsfreien Betrieb der Abdichtungen über eine längere Betriebszeit. Es wird an ausgeführten Beispielen gezeigt, daß nachziehbare Stopfbüchsen mit Erfolg durch selbsttätig arbeitende Federpackungen und Schleifringpackungen ersetzt werden können.
    Additional Material: 18 Ill.
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  • 93
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 494-494 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 94
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 504-505 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 95
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 502-503 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wird ein Aräometer beschrieben, welches gestattet, eine definierte Dichte, etwa d 20/4, bei beliebigen Temperaturen zu messen. Die Steigerung der Empfindlichkeit des Gerätes in Verbindung mit einer Temperaturkompensation ermöglichte eine Genauigkeitssteigerung der aräometrischen Messung, so daß die Pyknometermessung übertroffen wird.
    Additional Material: 3 Ill.
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  • 96
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Im I. Teil dieser ArbeitDiese Ztschr. 22, 389/95 [1950]. wurde eine Entwicklung des graphostatischen Verfahrens gegeben, wobei der Unterschied zwischen den molaren Verdampfungswärmen der beiden Einzelstoffe vernachlässigt wurde. Nachfolgend wird das Verfahren auf den Fall erweitert, daß dieser Unterschied in Rechnung gestellt werden muß.
    Additional Material: 26 Ill.
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  • 97
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    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 23 (1951), S. 506-506 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 98
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    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 23 (1951), S. 505-506 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 99
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    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 23 (1951), S. 507-507 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 100
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    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 23 (1951) 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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