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  (8)
  • LUNAR AND PLANETARY EXPLORATION  (4)
  • 79.20.N
  • Organic Chemistry
  • 1975-1979  (11)
  • 1925-1929  (1)
  • 1
    facet.materialart.
    Unknown
    Laser Ar-39-Ar-40 study of Apollo 17 basalts (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Three Apollo 17 basalts were studied by the laser Ar-39-Ar-40 method. The 70215 basalt has a normal well-behaved Ar-39-Ar-40 release pattern; the 70017 basalt has a disturbed release pattern which indicates a limited intermediate maximum age followed by a broad low-age region; and the 75035 basalt has a pattern initially similar to 70017 that is followed by a high-temperature maximum age. The laser study shows that all mineral systems in 70215 have small and uniform temperature losses, while the laser-determined ages for 70017 and 75035 are, apparently, primarily controlled by the minerals containing mesostasis inclusions. It is possible that the drop in ages observed by the conventional Ar-39-Ar-40 method was due not only to recoil of Ar-39 during neutron irradiation but also to gas loss from some minerals. It is suggested that the plagioclases are the best minerals to use for a reliable age.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar Science Conference; Mar 14, 1977 - Mar 18, 1977; Houston, TX
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 2
    facet.materialart.
    Unknown
    Laser /39/Ar-/40/Ar dating of two clasts from consortium breccia 73215 (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A laser Ar-39-Ar-40 study of the components of an ANT-suite anorthositic gabbro and a black aphanite from a consortium breccia is reported. A wide range of K-Ar ages is found for the plagioclase in the anorthositic gabbro; at the centers of the largest grains is material showing the greatest age (older than 4.11 billion years) while the youngest material (3.81-3.88 billion years) is found near the grain margins. Partial outgassing of the clasts upon incorporation into the breccia could account for the age patterns. The black aphanite clast appears to be cogenetic with the aphanite that forms the breccia matrix. The time of crystallization of a lunar granite has also been measured by the laser technique.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Science Conference; Mar 13, 1978 - Mar 17, 1978; Houston, TX
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 3
    facet.materialart.
    Unknown
    Laser probe /Ar-39/-/Ar-40/ dating of materials from consortium breccia 73215 (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The unique capacity of the laser-probe (Ar-39)-(Ar-40) method to determine ages of constituents in a rock sample which are only of the order of 100 microns apart has been applied to measure ages of the different constituents of consortium breccia 73215. Evidence is given that the age of the melt-derived ground mass, 4.01 + or - 0.05 billion years, has no chronological significance. Instead, the best estimate for the age of the breccia-forming event, about 3.90 billion years, comes from the study of two clasts only a few hundred micrometers in size. The interpretation of this age as the age of the breccia-forming event is also supported by the studies of other consortium members and suggests a reinterpretation of the ages of most of the other Apollo 17 highland breccias.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar Science Conference; Mar 14, 1977 - Mar 18, 1977; Houston, TX
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 4
    facet.materialart.
    Unknown
    Helium, neon, and argon on sunlit and shaded surfaces of lunar rock 12054 (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar Science Conference; Mar 14, 1977 - Mar 18, 1977; Houston, TX
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 5
    Electronic Resource
    Electronic Resource
    Apparatur zur Erfassung von Oberflächeneffekten beim Kriechen (1977)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 8 (1977), S. 407-410 
    Details
    ISSN: 0933-5137
    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
    Notes: Apparatus for the Detection of Surface Effects in Creep
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19770081205
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Bestimmung kleinster Bleimengen durch Elektrolyse (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 42 (1929), S. 96-98 
    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.19290420404
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Messungen des Schubmoduls G am Rotationsviskosimeter ‚Rotovisko‘ mit Elastizitätsmeßzusatz an Lösungen von Polyisobutylen in Toluol (1975)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 44 (1975), S. 119-129 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: With a rotational viscosimeter, equipped with a supplement for elasticity measurements, we carried out measurements of the elasticity modulus G, based on the Maxwell model. We measured solutions of polyisobutylene in toluene, 3 to 8%, with rate of shear 1.10-2S-1 to 4.101S-1. We find G to lie between 8.101 and 9.102dyn·cm-2, G increases with increasing rate of shear. The results are explained by Rouse's theory together with the theory of network entanglements.
    Notes: An einem Rotationsviskosimeter wird mit Hilfe eines Elastizitätsmeßzusatzes unter Zugrundelegung des Maxwell-Modells der Schubmodul G von 3- bis 8-proz. Polyisobutylen-Toluol-Lösungen in einem Bereich des Geschwindigkeitsgefälles zwischen 1·10-2 s-1 und 4·101 s-1 gemessen. Wir erhielten G-Werte zwischen 8·101 und 9·102 dyn·cm-2, wobei wir finden, daß mit zunehmendem Gefälle der Schubmodul anwächst. Die Ergebnisse werden mit Hilfe der Rouse-Theorie unter Berücksichtigung der Theorie des Verhängungsnetzwerkes interpretiert.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1975.050440110
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Einige neue Ergebnisse zum instabilen Fließen mäßig verdünnter Hochpolymerlösungen im Hochdruckkapillarviskosimeter und die Deutung des instabilen Fließens als Gleitfließen (spurt) (1975)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 45 (1975), S. 105-118 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: We find unstable flow in 1-6% solutions of poly(isobutylene) 200 in toluene (M = 3,5·106, light scattering) by measuring flow curves with capillaries R = 1,5·10-2cm, the L/R-ratio of which differs in the range of 10 to 660. Together with observations from literature, results are interpreted by the idea of Vinogradov that above a critical shear rate the viscoelastic fluid passes into the high-elastic (rubbery) state, the flow changing to slip flow (spurt).
    Notes: Instabiles Fließen im Hochdruckkapillarviskosimeter wird an 1-proz. bis 6-proz. Lösungen von Polyisobutylen 200 (M = 3,5 · 106, Lichtstreuung) in Toluol bei Aufnahme von Fließkurven festgestellt. Der Durchmesser der verwendeten Kapillaren betrug 1,5· 10-2cm, das L/R-Verhältnis zwischen 10 und 660. Zusammen mit anderen aus der Literatur bekannten Ergebnissen werden die Resultate mit Hilfe der Vorstellung von Vinogradov gedeutet, daß oberhalb einer kritischen Scherrate Dkrit die viskoelastische Flüssigkeit in den gummielastischen Zustand übergeht und statt des Fließens ein Gleitfließen (spurt) einsetzt.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1975.050450108
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Detection and determination of 5-sulphoisophthalic acid in copolyamides19th Communication in the series “Synthesefasern in der Wollindustrie” [Synthetic Fibres in the Wool Industry]; for the 18th communication, see: V. Rossbach, I. Kramer, F. Busert, H. Zahn, Textilveredlung 11 (1976) 289. (1976)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 56 (1976), S. 151-156 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: 5-Sulfoisophthalsäure läßt sich aus den Hydrolysaten von ε-Caprolactam-Copolyamiden mit Ionenaustauschchromatographie abtrennen und im Eluat mit Dünnschichtchromatographie, Papierhochspannungselektrophorese und Dünnschichtelektrophorese identifizieren. Nach Ermittlung des Comonomeren ist es möglich, den Gehalt an Isophthalsäure-5-natriumsulfonat direkt im Polymeren mit röntgenfluorometrischer Schwefelanalyse und flammenphotometrischer Natriumanalyse zu bestimmen.Eine Anwendung dieser Techniken auf zwei anionisch modifizierte Polyamid-6-Handelsfasern vom Differential-Dyeing-Typ (basic dyeable oder non dyeing Fasern) ergibt, daß sie Isophthalsäure-5-natriumsulfonat in einem Anteil von 2,5% enthalten.
    Notes: 5-Sulphoisophthalic acid can be separated from hydrolysates of ε-caprolactam copolyamides by ion-exchange chromatography and be identified in the eluate by thin-layer chromatography, high-voltage paper electrophoresis, and thin-layer electrophoresis. After the determination of the comonomers it is possible to determine the amount of the monosodium salt of 5-sulphoisophthalic acid (sodium 3,5-dicarboxybenzenesulphonate) directly in the polymer by X-ray fluorometric sulphur analysis and flame-photometric sodium analysis.The application of these techniques to two anionically-modified commercial polyamide-6 fibres of the differential dyeing type (basic dyeable or non-dyeing fibres) showed that they contain the monosodium salt of 5-sulphoisophthalic acid in an amount of 2.5%.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1976.050560111
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Bestimmung der Katalytischem Wirksamkeit von N-Benzoyl-thioharnstoffderivaten in der Jod-Azid-Reaktion in einem System von Konkurrenzreaktionen (1978)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 446 (1978), S. 216-226 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Determination of the Catalytic Activity of N-Benzoylthiourea Derivatives in the Iodine-Azide Reaction in a System of Competitive ReactionsIn the determination of catalytic activity of sulfur containing compounds using the azide/iodine reaction the catalyst is oxidised to an inactive form in a side reaction with iodine. Using a system of competitive reactions (reaction between ascorbic acid and iodine), in which the concentration of iodine is always kept very low during the measurement it is possible to overcome this difficulty. In such a system sulfide is catalytically active during a considerable part of the measurement period. With this method it is possible to recognize differences in the structure - action behaviour of the investigated catalysts (N-Benzoylthioureas) and to correlate the catalytic activity with the constitution. For comparison the qualitative azide/iodine test and a method to check photographic sensitivity was chosen.
    Notes: Die Bestimmung der Katalytischen Aktivität schwefelhaltiger Verbindungen mit Hilfe der Jod-Azid-Reaktion wird durch die in einer Nebenreaktion erfolgende Oxydation der Katalysatoren durch überschüssiges Jod stark gestört. Durch Einbeziehung einer Konkurrenzreaktion zwischen Ascorbinsäure und Jod kann die freie Jodkonzentration im Reaktionsgemisch sehr niedrig gehalten werden. so daß eine Desaktivierung der untersuchten Katalysatoren (N-Benzoylthioharnstoffderivate) kaum erfolgt. Dadurch ist es möglich, Unterschiede im Struktur/Wirkungsverhalten der einzelnen Verbindungen zu erkennen und die katalytische Aktivität mit der Konstitution zu korrelieren. Zum Vergleich werden der qualitative Jod-Azid-Test und ein sensitometrisches Prüfverfahren herangezogen.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19784460122
    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...