ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Chemistry  (21)
  • Organic Chemistry  (2)
  • SPACE RADIATION  (2)
  • PROPULSION SYSTEMS
  • 1960-1964  (24)
  • 1945-1949
  • 1964  (24)
Collection
Keywords
Publisher
Years
  • 1960-1964  (24)
  • 1945-1949
Year
  • 1
    Electronic Resource
    Electronic Resource
    Electrochemical transformations of polymeric acid solutions. I. Crossed Koble synthesis (1964)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 2 (1964), S. 5187-5202 
    Details
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Poly(methacrylic acid) was electrolyzed at 20°C. in 0.2 M dry methanol solution in a glass apparatus provided with two polished platinum disk electrodes; the current density was kept constant (300, 800, or 1000 ma.). Before electrolysis the acid was partially neutralized in order to increase the electrical conductivity. The electrolysis was characterized by evolution of carbon dioxide at the anode, while the acid content of the polymer decreased. When the degree of decarboxylation was about 30%, intramolecular lactonization occurred by interaction of unsaturated groups with neighboring acid groups. The changes of chemical composition of the polymer in function of the time were followed by determination of free carboxylic acid groups, of γ-lactones, and unsaturated groups (bromine addition). The amount of methyl ester formed by methanolysis of the lactones was calculated from methoxyl determinations. At the end of electrolysis only 5-6% free carboxylic groups were present, 35-40% lactones, 30% ester groups; the residue was mainly a hydrocarbon fraction (partially unsaturated). The electrolysis was also carried out in the presence of low molecular weight carboxylic acids, acetic, ∊-acetaminocarproic, and cyanoacetic acids, the ratio of the concentration of these acids to that of polymeric acid being varied over a wide range. With acetic acid the chemical composition of the polymer was only slightly affected through grafting of side methyl groups, as was shown by the use of C14 acetic acid. With ∊-acetaminocaproic and cyanoacetic acids the crossed Kolbe synthesis reactions are much more important, 20-24% side alkyl acetamino groups and 15% cyanomethylene groups being grafted to the main chain by this method. Chain degradation during these experiments can be practically avoided.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1964.100021215
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Diazomethan-Abbau von Bis-α-naphthochinon (1964)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 97 (1964), S. 2555-2566 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bis-[naphthochinon-(1.4)-yl-(2)] (Ia) reagiert an beiden Chinonringen in 1.3-dipolarer Cycloaddition mit Diazomethan. durch Oxydation wird das Addukt zu Naphthindazolchinon-(4.9) abgebaut. Das Abbauverfahren ist auf Derivate des Bis-α-naphthochinons Ia, wie Binaphthazarin und Actinorhodin anwendbar und ermöglicht, beide Ringsysteme solcher Verbindungen als Napthindazolchinon-Derivate zu fassen.  -  Methylierung von Napthindazolchinon-(4.9) und dessen 5.8-Dihydroxy-Derivat liefert erwartungsgemäß zwei isomere N-Methyl-Derivate, von denen in beiden Fällen nur das eine bekannt war.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19640970922
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    The “Bilthoven unit” for submerged cultivation of microorganisms (1964)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 6 (1964), S. 381-401 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260060403
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Umschau (1964)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 15 (1964), S. 427-432 
    Details
    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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19640150525
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Korrosion im StahlwasserbauBericht über den Kursus 328 an der Technischen Akademie Wuppertal vom 16. bis 18. 10. 1963 (1964)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 15 (1964), S. 371-373 
    Details
    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: Corrosion protection in steel hydraulic engineeringA description is given of a course of lectures (No. 328) at Wuppertal Technical Academy.After a review of the objects to be protected in steel hydraulic engineering, the corrosion protection methods employed with Swiss steel hydraulic engineering works are described.The article deals with pretreatment through de-rusting and the problems associated with it, methods and means of coating, spray galvanisation in steel hydraulic engineering, zinc dust primers, thickness of the protective films, guarantees, air conditioning and acclimatisation with internal paints for piping, stresses encountered in the tidal zone, atmospheric risks during the execution of the work, and the internal preservation of turbines.
    Notes: Es wird ein Bericht über den Kursus 328 an der Technischen Akademie Wuppertal gegeben.Einer Übersicht über die im Stahlwasserbau zu schützenden Objektteile folgt eine Übersicht über bei schweizerischen Stahlwasserbauten angewandte Korrosions-schutzmethoden.Die Vorbehandlung durch Entrostung und die hiermit zusammenhängenden Fragen, die Anstrichverfahren und -mittel, Spritzverzinkung im Stahlwasserbau, Zinkstaubanstrichmittet, Schichtdicke der Schutzüberzuge, Gewährleistung, Luftkonditionierung und Klimatisierung bei Innenanstrichen von Rohrleitungen, Beanspruchung in der Wasserwechselzone, das Schlechtwetter-Risiko bei der Arbeitsausführung und die Turbinen-Innenkonservierung werden behandelt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19640150504
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Fluctuations in the local rate of turbulent mass transfer to a pipe wall (1964)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 10 (1964), S. 475-482 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690100413
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Supraleitung beim In3SbTe2 (1964)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 76 (1964), S. 651-651 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19640761418
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Anwendungen der NMR-Spektroskopie zur Analyse organischer Verbindungen mit bekannten funktionellen Gruppen (1964)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 76 (1964), S. 689-689 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19640761527
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Die Struktur von Eurycomalacton (1964)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 76 (1964), S. 789-789 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19640761823
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Mechanism of ozone cracking. II. Nucleation and growth of cracks in a plastic film (1964)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 8 (1964), S. 1991-2007 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Partly unsaturated natural rubber hydrochloride films undergo stress cracking in ozonized oxygen. The origin of cracks and the correlation between stress distribution and rate of crack growth have now been studied. Cracks are initiated at foreign particles and/or surface fissures of microscopic dimensions. Fracture is promoted only if the shape of the incipient crack fulfils certain geometric conditions. These films become highly birefringent when stretched beyond the elastic limit; specific birefringence increases linearly with strain. It follows from stress optical studies that large plastic deformations take place ahead of the crack, whereas the film is deformed only elastically. Cut growth experiments confirm these conclusions. Fractography reveals that cracking consists mostly of a series of discontinuous events on a microscopic scale. The influence of crack length and polymer modulus on the critical stress, necessary for the onset of ozone cracking, is predictable from the Griffith criterion. The maximum stress at the tip was calculated from the observed dimensions of the crack and found to surpass the yield stress of the polymer. Mechanical brittle fracturing and ozone-induced stress corrosion have been compared. The remaining empirical element, which determines the rate of cracking, is the rate of hardening on ozonization of the fresh surface.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1964.070080506
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...