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  • Chemistry  (98)
  • Organic Chemistry  (11)
  • PROPULSION SYSTEMS
  • SPACE RADIATION
  • Wiley-Blackwell  (98)
  • 1960-1964  (84)
  • 1945-1949  (14)
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  • Wiley-Blackwell  (98)
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Year
  • 11
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 4 (1962), S. 129-138 
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 3 Ill.
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  • 12
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 6 (1964), S. 381-401 
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A unit of four fermentors, which is specially designed for batch and continuous cultivation of pathogenic microorganisms in vaccine preparation, is described. Each unit consists of a panel with controls and recorders. The fermentor itself consists of a stainless steel lid, to which a spherical or cylindrical glass vessel is attached. Holding volumes are from 1 to 100 l. (3 and 7 l. being mostly used) and can be obtained by simply exchanging the vessels which have similar flanges.Interchangeability, not only of the glass vessels, but also of the stirrers, pipes, pH electrodes, etc., together with variable control of temperature, stirrer speed, air or gas flow, and pH value gives the unit a maximum of versatility.
    Additional Material: 12 Ill.
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  • 13
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 15 (1964), S. 427-432 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Additional Material: 8 Ill.
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  • 14
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 465-473 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Titanium as material for chemical equipmentBecause of its favourable properties, titanium has very quickly passed through its first development stages and has meanwhile reached considerable production figures. Though the specific gravity of titanium is little more than half of that of steel, its strength corresponds to that of high-grade steel. Whilst these properties are of particular interest to aircraft production, the high corrosion resistance of titanium has led to a steadily increasing use of this metal as a material for chemical equipment. In this sphere, titanium is primarily used in cases where the corrosion problems encountered cannot be solved, or cannot be satisfactorily solved, by conventional materials. In many cases, the media concerned are those where the corrosion is caused by chlorine ions. This may cause the well-known phenomenon of pitting corrosion even with, e.g. stainless steel, whilst titanium can generally be regarded as absolutely corrosion-proof even in such media.A number of illustrations of titanium components, some of them on a large scale, show the scope of applications for which this new metal is already being used and processed. Since the best processing conditions for titanium have now been worked out and the necessary machinery etc. is now available, the manufacture of titanium components and titanium linings is generally no longer very difficult. Special experience and care is required for the welding of titanium parts in order to prevent oxygen and nitrogen from reaching the melt and thus causing embrittlement.A number of hints of a structural nature that must be taken into account in using titanium should be of value to the designer.Finally, it is shown on the strength of a number of examples that, in spite of its higher price compared with conventional materials, titanium often permits the most economic solution of a problem, all the more so as the prices of titanium have already shown a considerable decrease as the demand increased.
    Notes: Aufgrund der guten Eigenschaften von Titan hat es die ersten Stufen seiner Entwicklung sehr schnell durchlaufen und hat inzwischen eine beträchtliche Produktionshöhe erreicht. Bei dem geringen spezifischen Gewicht von nur etwas mehr als der Hälfte von Stahl weist es Festigkeiten auf, die denen der Edelstähle entsprechen. Während diese Eigenschaften vornehmlich für den Flugzeugbau interessant sind, führt die hohe Korrosionsbeständigkeit des Titans zu der stetig wachsenden Verwendung dieses Metalls im Bereich des chemischen Apparatebaues. Hier wird es in erster Linie eingesetzt in den Fällen, bei denen mit den herkömmlichen Werkstoffen die vorliegenden Korrosionsprobleme nicht oder nur unbefriedigend gelöst werden können. Vielfach handelt es sich dabei um Medien, bei denen ein Angriff von Chlorionen eintritt. Dieser verursacht bei beispielsweise rostfreiem Stahl den bekannten Lochfraß, während Titan in solchen Medien im allgemeinen als absolut beständig angesehen werden darf.Anhand etlicher Bilder von Titanteilen auch in großen Abmessungen wird gezeigt, in welchen Größenordnungen dieses neue Metall heute bereits angewendet und verarbeitet wird. Nachdem die besten Verarbeitungsbedingungen für Titan erarbeitet wurden und die hierzu erforderlichen Vorrichtungen etc. vorhanden sind, bereitet die Fertigung von Titanteilen und Titanauskleidungen im allgemeinen keine großen Schwierigkeiten mehr. Vor allem erfordert das Schweißen große Erfahrungen und Sorgfalt, um zu verhindern, daß während des Schweißens Sauerstoff zum Schweißbad gelangt, durch die das Material versprödet wird.Eine Reihe von Hinweisen konstruktiver Art, die bei der Verwendung von Titan besonders berücksichtigt werden müssen, sind besonders für den Konstrukteur wertvoll.Schließlich wird anhand einiger Beispiele gezeigt, daß das Titan trotz seines gegenüber den herkömmlichen Werkstoffen höheren Preises vielfach die wirtschaftlichste Lösung eines Problems ermöglicht, zumal die Preise des Titans selbst mit steigender Verwendung bereits erheblich ermäßigt werden konnten.
    Additional Material: 24 Ill.
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  • 15
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 12 (1961), S. 201-202 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 16
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 12 (1961), S. 752-758 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: The importance of layer thickness in corrosion protection coatingsThe protective value of coatings is decisively governed by the layer thickness. This applies to active as well as passive anti-corrosive coatings.The layer thickness has a bearing on the factors important to corrosion protection, such as adhesion, hardness and elasticity, porosity, durability, and corrosion protection effect.Contrary to earlier assumptions, the layer thickness required for optimum protection cannot be determined from the depth of roughness of the coating base alone. What is decisive is the ratio of depth and width of roughness.The layer thickness that can be achieved with a given coating compound depends on the type of this compound, on the application technique used, and on the processing.Of particular importance is the measuring of the layer thickness, and a description is given of the methods most commonly used.On the basis of the investigations carried out by R. pierce, it is shown that corrosion protection can only become possible with a dry layer thickness exceeding 125 micron.
    Notes: Von ausschlaggebender Bedeutung für den Schutzwert eines Anstriches ist die Schichtdicke. Dies gilt für die aktiven und passiven Korrosionsschutzanstrichsysteme.Die Schichtdicke beeinflußt die für den Korrosionsschutz wichtigen Faktoren wie Haftung, Härte und Elastizität, Porigkeit, Beständigkeit und Korrosionsschutzwirkung.Die für einen optimalen Schutz erforderliche Schichtdicke läßt sich nicht, wie bisher angenommen, allein aus der Rauhtiefe des Anstrichuntergrundes ableiten. Vielmehr ist das Verhältnis Rauhtiefe zu Rauhbreite entscheidend.Die mit einem Anstrichmittel erreichbare Schichtdicke ist bedingt durch den Typ des Anstrichmittels, der Art der Anstrichtechnik, der Verarbeitung.Von besonderer Bedeutung ist die Messung der Schichtdicke. Die gebräuchlichsten Verfahren werden aufgeführt.An Hand der Untersuchungen von R. Pierce wird gezeigt, daß korrosionsschutz erst oberhalb einer Trockenschichtdicke von 125 μ möglich ist.
    Additional Material: 6 Ill.
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  • 17
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 13 (1962), S. 291-292 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Increased stress on the steel structure in the vicinity of the groundWith a steel structure, the coatings near the ground are more exposed to corrosion than other areas of the structure, due to snow, ice, splashing water and dirt deposits which absorb moisture. To obtain uniform protection for all surfaces, it is desirable to strengthen the zone in the vicinity of the ground by an additional coat, preferably of a bituminous type.
    Notes: Die Bodenzone der Anstriche an einer Stahlkonstruktion ist durch Schnee, Eis, Spritzwasser, Schmutzablagerungen, die Feuchtigkeit absorbieren usf., stärker beansprucht als der Anstrich an den anderen Flächen der Konstruktion. Urn eine gleichmäßige Schutzwirkung an allen Flächen zu gewährleisten, ist eine Verstärkung der Bodenzone durch einen zusätzlichen Anstrich, möglichst auf bituminöser Basis, zweckmäßig.
    Additional Material: 6 Ill.
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  • 18
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 13 (1962), S. 741-742 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Additional Material: 3 Ill.
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  • 19
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 209-212 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Paints for underwater use (Antifouling Paints)The corrosion protection of locks, weirs, water tanks and similar objects continually exposed to contact with water is among the most difficult tasks of painting technology.The article deals with the loads to which teh coatings are exposed, the requirements to be met by the paints destined for underwater use, and the qualitative assessment of the different agents.
    Notes: Der Korrosionsschutz von Schleusen, Wehren, Wasserbehältern u. a. Objekten, die ständig der Einwirkung von Wasser ausgesetzt sind, gehört zu den schwierigsten Aufgaben, die der Anstrichtechnik gestellt werden.Die Belastung der Anstriche, die Anforderungen an die Anstrichmittel für Unterwasserbeanspruchung und die Beurteilung der verschiedensten Anstrichmittel werden behandelt.
    Additional Material: 1 Tab.
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  • 20
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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