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  • Wiley-Blackwell  (5,484)
  • 1995-1999  (1,566)
  • 1960-1964
  • 1950-1954  (3,918)
  • 1999  (1,566)
  • 1954  (2,144)
  • 1952  (1,774)
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  • 1995-1999  (1,566)
  • 1960-1964
  • 1950-1954  (3,918)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie in unserer Zeit 33 (1999) 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 2
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    Chemie in unserer Zeit 33 (1999), S. 45-50 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A variety of demonstration experiments can be shown to a large audience with a minimum amount of chemicals by using an ordinary slide projector and easily mounted cuvettes. A detailed instruction for assembling the cuvettes is given as m d l as examples for suitable demonstration experiments in general, inorganic, organic and physical chemistry.
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  • 3
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    Weinheim : Wiley-Blackwell
    Chemie in unserer Zeit 33 (1999), S. 61-61 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 4
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    Chemie in unserer Zeit 33 (1999), S. 66-66 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 5
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    Chemie in unserer Zeit 33 (1999), S. 67-67 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 6
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    Weinheim : Wiley-Blackwell
    Chemie in unserer Zeit 33 (1999) 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 7
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    Chemie in unserer Zeit 33 (1999), S. 95-103 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Natural events as well as human activities are affecting the environment and even with largescale monitoring programs it is not possible to completely assess the state of the environment. But a documentation of the environmental status with respect to its chemical composition can be realized with systematically collected representative environmental samples, which can be stored for decades at very low temperatures almost without degradation. Such ‘banking activity’ allows a current environmental monitoring and also a retrospective analysis for the determination of components which have not been analyzed at the time of sampling because of ta lack in analytical techniques or because they have not been known or considered environmentally relevant. The concept of environmental specimen banking and general procedures are described. Various examples illustrate the many facets of such activities.
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  • 8
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    Chemie in unserer Zeit 33 (1999), S. 128-128 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Arbeitsmarktsituation in der Chemie hat sich in den letzten Jahren spürbar entspannt. Dennoch gibt es auf etlichen, nicht hundertprozentig dem Trend der Zeit entsprechenden Spezialgebieten immer noch einen beträchtlichen Überhang an Stellensuchenden. Entsprechende Mobilität vorausgesetzt, kann das Internet bei der Stellensuche hilfreich sein.
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  • 9
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    Chemie in unserer Zeit 33 (1999), S. 135-135 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 10
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    Weinheim : Wiley-Blackwell
    Chemie in unserer Zeit 33 (1999) 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 11
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    Weinheim : Wiley-Blackwell
    Chemie in unserer Zeit 33 (1999), S. 165-166 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 12
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    Chemie in unserer Zeit 33 (1999), S. 158-164 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Atmospheric aerosol particles cause one of the largest uncertainties in estimates of human influence on climate - a good reason to take a closer look at the atmospheric life cycle of the aerosols and its effects. Besides a number of primary and secondary natural aerosol sources we need to consider since the beginning of industrialisation strong manmade particle sources. During its residence in the atmosphere the aerosol interacts in many physical and chemical ways with other atmospheric trace substances, most importantly with water vapor and its liquid and solid phases. Through its direct effect on solar and thermal radiation and through its influence on clouds the atmospheric aerosol exerts a climate forcing. To data we cannot predict the ensuing climate response because of our limited understanding of essential atmospheric processes and of the many possible feedbacks within the climate system. However, already our present knowledge of the role of the atmospheric aerosol in the climate system makes strictly global views of anthropogenic climate changes questionable.
    Notes: Der Stand unseres Wissens zum Kreislauf des Atmosphärischen Aerosols und von seiner Rolle im Klimasystem läßt sich wie folgt zusammenfassen: 1Unser Verständnis des globalen Aerosolkreislaufs und vor allem des menschlichen Eingriffs in denselben ist noch sehr unvollständig. Dies gilt in hohem Maße auch für die mit diesem Kreislauf verbundenen chemischen Mehrphasenprozesse.2Ein negativer direkter Klimaantrieb anthropogener Aerosole existiert über die Streuung und Absorption, hat aber noch große Unsicherheiten und kann über hoch mit Rußpartikeln belasteten Gebieten auch positive Werte annehmen.3Ein indirekter Klimaantrieb anthropogener Aerosole existiert wahrscheinlich und hat ebenfalls ein negatives Vorzeichen. Seine Größenordnung und Unsicherheiten lassen sich noch nicht quantifizieren.
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  • 13
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    Chemie in unserer Zeit 33 (1999), S. 177-185 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chemical concepts are important to gain a qualitative understanding of chemistry. They are needed to find interesting questions to which experimental research as well as quantum-chemical investigations and computer simulations can contribute. We point out why chemical concepts should be seen as an important and from fundamental physical theories to a certain degree independent part of chemistry. An overview and analysis of some concepts - which are often introduced only in connection with special examples instead of a discussion for their own sake - are given. We take a closer look at some concepts to illustrate our assertions. An analysis of the stability of the cyclic (MoNL3)-trimer demonstrates how these concepts work and what they can tell us about this special case.
    Notes: Wir haben versucht, deutlich zu machen, wie wichtig theoretische Konzepte in der Chemie sind. Dabei gelangen wir zu folgenden Schlußfolgerungen über die Konzepte, die in der Chemie herangezogen werden, um Beobachtungen zu deuten und zu verstehen: Qualitativ chemische Konzepte sind für ein Verständnis der Chemie unverzichtbar. Eine quantenchemische Berechnung liefert nicht automatisch Verständnis und Einordnung in einen Gesamtzusammenhang.Erst die vereinfachende Beschreibung chemischer Konzepte ermöglicht eine unmittelbare Diskussion chemischer Fragestellungen.Die Konzepte sind trotz grundlegender physikalischer Theorien bis zu einem gewissen Grade eigenständig.
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  • 14
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    Weinheim : Wiley-Blackwell
    Chemie in unserer Zeit 33 (1999) 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 15
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    Chemie in unserer Zeit 33 (1999), S. 213-220 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The article commemorates the centenary of the protection of the proprietary mine of Aspirin. The early medicinal uses of salicylic acid derivatives in herbal remedies arc summarised as well as the biosynthesis of these derivatives. The history of the synthesis of salicylic acid and of acetyl salicylic acid (ASS) is described in detail as is the discovery of additional therapeutic applications and the basic pharmacology of ASS.
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  • 16
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    Chemie in unserer Zeit 33 (1999), S. 234-235 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 17
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 18
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    Chemie in unserer Zeit 33 (1999), S. 246-246 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 19
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    Chemie in unserer Zeit 33 (1999), S. 250-250 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 20
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    Chemie in unserer Zeit 33 (1999), S. 308-309 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 21
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    Chemie in unserer Zeit 33 (1999), S. 312-312 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 22
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    Chemie in unserer Zeit 33 (1999), S. 314-314 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 23
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    Chemie in unserer Zeit 33 (1999), S. IX 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 24
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    Chemie in unserer Zeit 33 (1999), S. 318-318 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    Chemie in unserer Zeit 33 (1999), S. 354-358 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chemical Biology is a rapidly growing field at the interface of organic chemistry and cell biology. Chemical strategies are used to address biological questions not amenable to traditional genetic and biochemical techniques alone. Thc enormous potential of Chemical Biology is illustrated by four recent examples.
    Notes: Chemische Biologie ist eine junge Forschungsrichtung im Grenzgebiet zwischen Organischer Cherme und Zellbiologie, welche aus einem Bedarf nach neuen Techniken zur Untersuchung zellbiologischer Mechanismen entstanden ist. Chemische Methoden werden mit biochemischen und molekularbiologischen Methoden kombiniert, um neuartige Möglichkeiten für die biologische Grundlagenforschung zu schaffen. So werden synthetische Oligosaccharide kovalent an die Oberfläche lebender Zellen gebunden, die Konzentration von Calciumionen im Zytosol künstlich reguliert und Rezeptoren künstlich aktiviert.
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    Chemie in unserer Zeit 33 (1999), S. 373-374 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Eine neue Elektrosynthese erfüllt erstmals den Traum der Elektrochemiker, gleichzeitig Anoden- und Kathodenreaktion für organische Synthesen technisch zu nutzen.
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    Chemie in unserer Zeit 33 (1999), S. 377-377 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    Chemie in unserer Zeit 33 (1999), S. 380-380 
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    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    Chemie in unserer Zeit 33 (1999), S. 382-384 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Around the world, BASF has been preparing for Y2K since 1996. The Information services and the Process Control Technology divisions, as well as embedded systems and logistics, not to mention the company's customers and suppliers have all been systenmatically tested for Y2K capability. In addition, special precautionary measures in particular, at large Verbund sites - will be in place during the switchover period.
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  • 30
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    Chemie Ingenieur Technik - CIT 24 (1952) 
    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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    Chemie Ingenieur Technik - CIT 24 (1952), S. 1-2 
    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 Verfahren beschrieben, die wirksame Oberfläche eines Katalysators ohne Behinderung des Gastransportes zu erhöhen durch Aufbringen des katalysierenden Stoffes in Pulverform auf impräginerte Körner ohne Beimischung eines Bindemittels und ohne mechanischen Druck. Die Katalysatoren sind schüttfest. Sechs Beispiele mit vergleichenden Versuchen an großtechnisch wichtigen Prozessen zeigen eine um ein Vielfaches erhöhte Ausbeute.
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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: Das Aufzeigen der Merkmale im Aufbau von Zerstäubungstrocknern führt zu einer Betrachtung der Abmessungen der Teilchen, aus denen das Trockenpulver besteht. Mikroaufnahmen lassen die verschiedenen Einflüsse auf die Teilchengröße erkennen. Letztere legt ihreseits die Größe der Wärmeund Stoffaustauschzahlen fest. Das Hauptergebnis dieser theoretischen Untersuchungen ist die Trockenzeit. Je nach Teilchenabmessung schwankt sie zwischen Bruchteilen und einer Vielzahl von Sekunden. Auch der Betriebsmittelverbrauch wird untersucht; es wird gezeigt, wie der Wärmeverbrauch erniedrigt werden kann.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 22-25 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In den bis jetzt in der amerikanischen Literatur veröffentlichten beiden Enthalpie - Diagrammen wird nicht das metrische Maßsystem angewendet oder sie umfassen nicht das ganze Gebiet des Systems Wasser-Schwefelsäure-Schwefeltrioxyd. Außerdem ist die Genauigkeit der Enthalpiewerte schwer zu beurteilen, da die Verfasser die Auswertung der experimentellen Daten nicht erklären. Im folgenden wird nun über die Berechnung und Konstruktion eines Enthalpie-Diagramms im metrischen Maßsystem über das gesamte Gebiet des Systems ausführlich berichtet, und Fehlergrenzen werden angegeben.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 32-36 
    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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    Chemie Ingenieur Technik - CIT 24 (1952), S. 36-41 
    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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    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 über die Arbeiten dreier Autoren berichtet, die möglichst einfache Formen der Dispersoidanalyse für technische Zwecke entwickelt haben. Zwei Arbeiten befassen sich mit der Verbesserung oder Vereinfachung bekannter Methoden, die auf der Sedimentation von Dispersoiden in Flüssigkeiten bzw. der Messung der Durchlässigkeit des aufgehäuften Materials beruhen. Die dritte Arbeit benutzt die Dispersion des Lichts in Abhängigkeit von der Teilchengröße, den sog. Mie-Effekt, und verspricht bei Einsatz entsprechender optischer Mittel eine fast augenblickliche Messung, die auch die Bildung oder Veränderung von Dispersionen zu verfolgen gestatten würde.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 41-42 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 42-44 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 45-46 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 47-49 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 49-50 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 58-59 
    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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    Chemie Ingenieur Technik - CIT 24 (1952), S. 60-81 
    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 an Hand von Photographien ein Überblick über das Verhalten von mit Gasen oder Flüssigkeiten aufgeströmten, gekörnten Schüttgütern gegeben. Auf Grund der vorliegenden Literatur und eigener Arbeiten werden quantitative Angaben gemacht über die Größe des Druckabfalles in Wirbelschichten, die minimalen und maximalen Geschwindigkeiten, bei denen eine Wirbelschicht noch beständig ist, und über die Schichtausdehnung infolge der Wirbelbewegung des gekörnten Gutes. Weitere Angaben folgen über die Viscosität in Wirbelschichten, den Böschungswinkel sowie den Stoff- und Wärmetransport, den Abrieb des wirbelnden Kornmaterials, die Erosion der Apparatewände sowie über chemische Umsetzungen in Wirbelschichten.
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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: In der vorliegenden Arbeit werden Aufströmungseigenschaften und hydrodynamische Zustände mit Luft aufgewirbelter Partikelschichten untersucht. Anschliεßend wird eine Versuchsanordnung und Methode für Wärmeübergangs-Messungen in solchen Schichten im Vergleich zu ruhenden Schüttungen behandelt und eine Deutung der Versuchsergebnisse gegeben.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 92-92 
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    Keywords: Chemistry ; Industrial Chemistry
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    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wird die Formulierung des Winkler-Verfahrens in deutschen und amerikanischen Patentschriften erörtert, wobei wesentlich ist, daß die Vergasung in einer bewegten Schicht stattfindet.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 93-97 
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    Notes: Eine Schicht von losem, feinkörnigem Schüttgut läßt sich in einem Behälter durch eine richtig dosierte Gasströmung in einen beweglichen Zustand versetzen. Die Schicht verhält sich dann ähnlich wie eine Flüssigkeit. Es werden Untersuchungen und Verfahren beschrieben, denen das Prinzip der Wirbelschicht zugrunde liegt.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 110-114 
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    Keywords: Chemistry ; Industrial Chemistry
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 129-135 
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    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Aus dem bei der Badischen Anilin-& Soda-Fabrik, Ludwigshafen, entwickelten Spiralwindsichter entstand durch die Einführung rotierender Sichtraumwände, einer sich automatisch der Trenngrenze anpassenden Grobgutspülung und nach sorgfältiger konstruktiver Durcharbeitung eine betriebsreife Maschine. Bei dieser Entwicklung wurden neue Erkenntnisse über die Definition der Korngröße und das Ansatzverhalten von Feinstäuben gewonnen. Die vermutliche Weiterentwicklung wird abschließend skizziert.
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    Notes: Den zahlreichen Vorschlägen zur wirtschaftlichen Bewertung von Wärmeübertragern wird die Anregung entgegengestellt, die Kosten für den Gesamtaufwand an Rohrlänge zur wichtigsten Grundlage einer wirtschaftlichen Bewertung verschiedener Gestaltungen zu machen. Die Vergleiche werden für Längsstrom in Rohren und für Querstrom durch Rohrbündel mit Einschluß berippter Rohre in einheitlicher und systematischer Weise durchgeführt. Besonders bei niedrigen Re-Zahlen erweisen sich Querstrom-Anordnungen mit engen Rohrabständen als wirtschaftlich überlegen.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 156-157 
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    Keywords: Chemistry ; Industrial Chemistry
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    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Um die Betriebssicherheit und Lebensdauer von Vakuumpumpen zu erhöhen, kann ein Staubfilter vorgeschaltet werden. Hierfür lassen sich ein U-Rohrfilter bzw. ein Öl-Umlauffilter, die mit trockenen bzw. ölbenetzten Raschig-Ringen gefüllt sind, verwenden.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 160-163 
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 165-165 
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 158-159 
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    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Bei der Auswertung photographisch aufgenommener Spektren sowie der intensitätsmäßigen Auswertung von Röntgenaufnahmen, speziell von Faseraufnahmen und diffusen Streukurven, muß man die vom Registrierphotometer gelieferte Kurve auf Intensität bzw. Schwärzung umwerten. Es wird ein aus einfachen Mitteln herstellbarer Apparat angegeben, der dies mechanisch ausführt und sich gut bewährt hat.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 163-165 
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 166-168 
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    Chemie in unserer Zeit 33 (1999), S. 4-4 
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    Chemie in unserer Zeit 33 (1999), S. 66-66 
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    Notes: The Fonds of German Chemical Industry (FCI) has produced an instrumental kit named „Blue Genes“ which enables High School teachers to perform in their school environment basic experiments of gene analysis and cloning. In particular, the kit contains all necessary equipment and reagents to perform a restriction analysis, and cloning and expression of a bacterial gene.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 234-236 
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 229-230 
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    Description / Table of Contents: A few physical phenomena believed to be religious miracles are considered, and scientific explanations for them are proposed.
    Notes: Einige physikalische Phänomene, von denen man glaubte, sie seien religiöse Wunder, werden vorgestellt und wissenschaftliche Erklärungen hierfür vorgeschlagen.
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    Chemie in unserer Zeit 33 (1999), S. 173-173 
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 237-247 
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    Notes: Berichtet wird über wesentliche Fortschritte der Fischer-Tropsch-Synthese mit festangeordnetem Katalysator. Die Entwicklung hochaktiver Eisen-Katalysatoren und Aufklärung wichtiger Fragen der Reaktionskinetik und des Wärmetransportes in den Reaktoren ermöglichte erhebliche Erhöhung der Ausbeute und Qualität der Produkte und technische Verbesserung der Synthese-Anlagen, so daß die Wirtschaftlichkeit des Fischer-Tropsch-Prozesses unter sehr verschiedenartigen Bedingungen gegeben ist. Erstmalig werden zusammenfassende Mitteilungen über die Qualität der aus diesen Produkten von der Ruhrchemie großtechnisch hergestellten synthetischen Schmieröle gemacht.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 262-271 
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    Notes: Die Schwingungstechnik hat in den letzten Jahren auch in der chemischen Industrie ständig an Bedeutung gewonnen. Einmal ergaben sich in vorhandenen Anlagen bei Erweiterungen Schwierigkeiten, so daß man auf neue Erkenntnisse der Schwingungstechnik angewiesen war, zum anderen aber wollte man auch bei Neuplanungen die Vorteile schwingungstechnischer Gründung von Maschinen von vornherein ausnutzen. Im folgenden wird eine Übersicht gegeben über die sich bietenden Probleme und deren praktische Lösungen, wie sie mit Erfolg bereits verwirklicht sind oder z. Zt. verwirklicht werden.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 272-277 
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    Notes: Im folgenden werden die Grundzüge der Physik der Festkörper, soweit sie zum Verständnis der Pulverdispersoide notwendig sind, behandelt. Der Einfluß von mechanischem Zerkleinerungsgrad, Eigengewicht, Kristallstruktur und -oberfläche auf das Verhalten von Pulvern wird dargelegt.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 277-283 
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    Notes: Am Beispiel des Penicillin wird die großtechnische Herstellung der Antibiotika behandelt. Besonderheiten, die sich für die Reinigung von Streptomycin und Aureomycin aus ihren chemischen Eigenschaften ergeben, werden berücksichtigt.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 284-288 
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    Notes: Zur Untersuchung von Sedimentations-, Elektrophorese- und Diffusionsvorgängen wurde ein lichtstarkes Meßverfahren nach der Interferenzmethode entwickelt, das den Vorteil der hohen Lichtstärke einer Jaminschen Anordnung des Planparallelplatten - Interferometers gegenüber dem Doppelspalt-Interferometer voll ausnutzt, indem als optisches Zusatzglied zwei gewinkelte gleichdicke Planparallelplatten angefügt werden. Ein Gerät zur Messung der Diffusionskonstanten wird beschrieben.
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    Chemie in unserer Zeit 33 (1999), S. VIII 
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    Chemie in unserer Zeit 33 (1999), S. XIV 
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    Chemie in unserer Zeit 33 (1999), S. 334-341 
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    Topics: Chemistry and Pharmacology
    Notes: The essential trace element copper plays a key role in living systems. Its metalloproteins are involved in various reactions. The IT ononuclear blue copper type-1 proteins take, part in electron transfer processes. Type-2 proteins can either act as oxidases, oxygenases, dioxygenases, or superoxide dismutases, containing one copper core. Dinuclear copper centers of Type-3 proteins are the oxygen transport system hemocyanin, oxidases and oxygenases. Due to this variety of functions copper deficiency and also abundance can cause severe damage of any life form.
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    Chemie in unserer Zeit 33 (1999), S. 359-364 
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    Topics: Chemistry and Pharmacology
    Notes: It is tried to fix the limits between the notions high pressure synthesis and high temperature chemistry. The work of Fritz Haber to apply high pressure to synthetise ammonia and of Friedrich Bergius to liquify coal to synthetise petrol is described. Special attention is given to the merits of Carl Bosch and his coworkers at BASF for applying the high pressure synthesis into industrial scale. The consequences of thc work of Haber, Bergius und Bosch on chemistry, social and political life and their importance for the present are considered.
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    Chemie in unserer Zeit 33 (1999), S. 376-376 
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    Notes: In der Verfahrenstechnik spielen rheologische Einflüsse eine bedeutende Rolle. An Beispielen aus der Reyon- und Zellwollindustrie wird gezeigt, daß u. a. die Spinnlösung in den verschiedenen verfahrenstechnischen Stufen ein unterschiedliches Verhalten aufweist. Durch eine rheologische Betriebskontrolle können der Fabrikationsprozeß überwacht und Aussagen über die Qualität des Ausgangsproduktes und der Fertigprodukte gemacht werden.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 339-347 
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    Notes: An Hand einiger Beispiele der Praxis wird Stellung genommen zur Frage, welche Faktoren bei bestimmten, mit etwa atmosphärischen Drucken betriebenen Gaserzeugertypen die Zusammensetzung der Vergasungsgase beeinflussen.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 349-352 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Auf Grund neuerer experimenteller Ergebnisse englischer und russischer Autoren werden unter Heranziehung eigener reaktionskinetischer Untersuchungen die vermutlichen Elementarreaktionen der aus den Experimenten folgenden drei Reaktionsstufen der Kohleverbrennung Cfest + ½ O2 = CO; CO + ½ O2 = CO2; CO2 + Cfest = 2 CO aufgestellt. Es wird versucht, aus dem Elementarablauf die experimentellen Befunde abzuleiten und verständlich zu machen. Die Vorgänge bei der Vergasung der Kohle sowie Fragen der Energieverteilung zwischen Festkörper und Gas werden diskutiert.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 348-348 
    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 Ofen beschrieben, der zum Ausglühen von Kupferoxyd für die Stickstoff-Bestimmung nach Dumas gebraucht wird, sich aber auch zum Ausglühen von körnigen Substanzen in beliebigem Gasstrom eignet.
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  • 93
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 359-364 
    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 24 (1952), S. 373-373 
    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 24 (1952), S. 364-373 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 6 Ill.
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  • 96
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 353-357 
    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 Hand einer umfangreichen Tabelle wird gezeigt, daß sich das Guldbergsche Verhältnis ϑ = Ts/Tk für organische Verbindungen additiv aus Atom- und Gruppenwerten zusammensetzen läßt. Damit wird es möglich, die absolute kritische Temperatur Tk eines organischen Stoffes abzuschätzen, wenn dessen Siedetemperatur Ts bekannt ist.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 373-376 
    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
    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 lösbarer Hochdruckverschluß beschrieben, bei dem die Abdichtung durch einen Kupferring bewirkt wird. Sodann wird der Kraftfluß durch den Kupferring ermittelt sowie die durch die Abdichtung bewirkte Biegespannung im Behälter.
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    Chemie Ingenieur Technik - CIT 24 (1952), S. 377-378 
    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 24 (1952), S. 378-380 
    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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