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  • Chemistry  (10)
  • AWI_BPP; Bentho-Pelagic Processes @ AWI; Brandal; Comment; Kongsfjorden, Spitsbergen, Arctic; Mass spectrometer, Finnigan, MAT 253; MULT; Multiple investigations; ORDINAL NUMBER; Serripes groenlandicus, δ13C; Serripes groenlandicus, δ18O; δ13C, standard deviation; δ18O, standard deviation  (3)
  • (Mono) terpenes  (2)
Collection
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Influence of various factors on quantitative composition of leaf monoterpenes of Picea abies (L.) Karst (1988)
    Springer
    Trees 2 (1988), S. 45-51 
    Details
    ISSN: 1432-2285
    Keywords: Picea abies ; (Mono) terpenes ; Needle ; Variability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The extractable monoterpenes from needles of two groups of trees — 4-year-old clonal and 20-year-old wild trees — were studied with respect to the influence of individual constitution, needle age, whorl position, and position on branch. Leaf terpene amounts from clonal trees are significantly affected by age and position of the whorl, whereas position on the branch is of minor importance. Developing needles of clonal trees are most strongly affected by age and whorl position and they differ markedly from mature needles in quantitative terpene composition. Wild trees exhibit a very high variation from tree to tree, which obscures the influence of needle age and position. For this reason meaningful tree leaf terpene data will only be derived if large samples of needles of different ages are collected from distinct positions. When comparing different trees, needles should be selected that not only have the same state of development, but also originate from identical positions and have been subjected to the same light treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00196979
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  • 2
    Electronic Resource
    Electronic Resource
    Influence of various factors on quantitative composition of leaf monoterpenes ofPicea abies (L.) Karst (1988)
    Springer
    Trees 2 (1988), S. 45-51 
    Details
    ISSN: 1432-2285
    Keywords: Picea abies ; (Mono) terpenes ; Needle ; Variability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The extractable monoterpenes from needles of two groups of trees — 4-year-old clonal and 20-year-old wild trees — were studied with respect to the influence of individual constitution, needle age, whorl position, and position on branch. Leaf terpene amounts from clonal trees are significantly affected by age and position of the whorl, whereas position on the branch is of minor importance. Developing needles of clonal trees are most strongly affected by age and whorl position and they differ markedly from mature needles in quantitative terpene composition. Wild trees exhibit a very high variation from tree to tree, which obscures the influence of needle age and position. For this reason meaningful tree leaf terpene data will only be derived if large samples of needles of different ages are collected from distinct positions. When comparing different trees, needles should be selected that not only have the same state of development, but also originate from identical positions and have been subjected to the same light treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01196344
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  • 3
    Electronic Resource
    Electronic Resource
    Electrochemical Preparation of Nanostructured Titanium Clusters: Characterization and Use in McMurry-Type Coupling Reactions (1996)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 129 (1996), S. 741-743 
    Details
    ISSN: 0009-2940
    Keywords: Clusters ; Transmission electron microscopy ; Low-valent titanium ; Olefin formation ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The electrochemical preparation of nanostructured titanium clusters is possible by using a titanium sacrificial anode as the metal source and tetrabutylammonium bromide in THF as the electrolyte and stabilizer. Transmission electron microscopy shows the presence of spherical 3.0-nm-sized particles. THF solutions of these Ti clusters induce olefin-forming McMurry-type coupling of aldehydes and ketones.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19961290703
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  • 4
    Electronic Resource
    Electronic Resource
    Differential heats of condensation and enthalpies of saturated liquid hydrocarbon mixtures (1956)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 2 (1956), S. 389-392 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: By use of saturated-vapor enthalpies determined by accepted procedures in conjunction with differential latent heats of condensation, the saturated-liquid enthalpies are established for the system methane-ethane at 200, 400, and 600 lb./sq. in. abs. and for the system ethane-n-butane and propane-n-butane at the two lower pressures. Where comparison is possible, the liquid-enthalpy values obtained by this method are in general agreement with those previously determined by Edmister and Canjar. The procedure used is thermodynamically rigorous and may be applied to any binary mixture, provided the Benedict-Rubin-Webb equation of state is valid in the vapor phase and P-V-T-x data are available.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690020319
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  • 5
    Electronic Resource
    Electronic Resource
    Theorem of corresponding states applied to saturated liquids and vapors (1956)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 2 (1956), S. 354-359 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The existence of a single generalized compressibility-factor relationship for univariant systems has long been denied because reduced variables do not provide a generalized vapor-pressure relationship. The present study demonstrates that a saturation curve depends on the ability of the theorem of corresponding states to correlate the reduced temperature as a function of reduced, pressure and the critical compressibility factor. Saturation curves for both the liquid and the vapor phases are established from compressibility data on a variety of systems, substantiating this conclusion.The compressibility factors of saturated mixtures are correlated with pseudoreduced properties based upon Kay's pseudocritical concept. The results indicate that the compressibility factors of saturated liquid mixtures can be predicted with reasonable precision over the entire two-phase region. For pseudoreduced isotherms of unity and above, the same isotherms apply to both phases and are approximately consistent with published compressibility charts for pure gases.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690020312
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  • 6
    Electronic Resource
    Electronic Resource
    92. Anlagenweite modellgestützte Online-Optimiering - Erfahrungen und zukünftige Entwicklungen (1998)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 70 (1998), S. 1131-1132 
    Details
    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
    URL: http://dx.doi.org/10.1002/cite.330700994
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  • 7
    Electronic Resource
    Electronic Resource
    Konkurrierende Adsorption von zwei in Wasser gelösten organischen Substanzen an AktivkohleKurzfassung eines Vortrags auf dem Jahrestreffen der Verfahrens-Ingenieure, 28. bis 30. Sept. 1977 in Stuttgart. (1978)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 50 (1978), S. 119-120 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330500211
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  • 8
    Electronic Resource
    Electronic Resource
    Spirocyclische Verbindungen, IX. 1′.5′-Di-tosyloxymethyl-spiro(cyclohexan-1.6′-[3]oxabicyclo-[3.1.0]hexan) und 1.1-Diisopropenyl-cyclopentan (1966)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 695 (1966), S. 34-41 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die saure Verseifung des Tetranitrils 1 führt zum Dinitril 2. Aus 1 erhält man über die Zwischenprodukte 3a - d Spiro[2.5]octan-tetracarbonsäure-(1.1.2.2) (4a). Der mit Diazomethan gebildete Tetramethylester 4b wird mit LiAlH4 zum Tetrol 4c reduziert, das mit p-Toluolsulfochlorid 1′.5′-Di-tosyloxymethyl-spiro(cyclohexan-1.6′-[3]oxabicyclo[3.1.0]hexan) (5) liefert.  -  Das durch LiAlH4-Reduktion von Spiro[2.4]heptan-tetracarbonsäure-(1.1.2.2)-tetramethylester (7b) erhaltene Tetrol 7c wird in das Tetratosylat 7d übergeführt. Durch Umsetzung mit wasserfreiem LiBr in absol. Aceton entsteht die Tetrabrommethyl-Verbindung 7e, aus der beim Kochen mit Zinkstaub in wäßrig alkalisch/äthanol. Medium 1.1-Di-isopropenyl-cyclopentan (8) gebildet wird. Die Konstitution von 5 bzw. 8 wird durch das IR-Spektrum bzw. durch IR- und NMR-Spektrum bestätigt.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.19666950105
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  • 9
    Electronic Resource
    Electronic Resource
    Spirocyclische Verbindungen, VIII. Symmetrische, nur aus Cyclobutan-Ringen bestehende Oligo- und Polyspirane (1966)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 694 (1966), S. 1-8 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Pentaerythrit-tetratosylat (1) setzt sich mit Natrium-malonsäurediäthylester in 63-proz. Ausbeute zu Spiro[3.3]heptan-tetracarbonsäure-(2.2.6.6)-tetraäthylester (2a) um. Durch Abwandlung der gem.-Bis-äthoxycarbonyl-Gruppen werden die Derivate 2b - h erhalten, von denen das Tosylat 2e mit Natrium-malonsäurediäthylester den Tetraester 3a liefert. Die analoge Reaktionsfolge bringt nacheinander ein Pentaspiran (6 Cyclobutan-Ringe) (4a - e), ein Heptaspiran (8 Cyclobutan-Ringe) (5a - e) und schließlich ein Nonaspiran (10 Cyclobutan-Ringe) (6a - c) mit jeweils anfangs- und endständiger gem.-Bis-äthoxycarbonyl-, gem.-Bis-hydroxymethyl- und gem.-Bis-tosyloxymethyl-Gruppe. Das Säurechlorid 2h gibt beim Kochen mit Triäthylamin in absol. Benzol den aus 5 Cyclobutan-Ringen bestehenden Dioxo-dicarbonsäure-dimethylester 7.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.19666940102
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  • 10
    Electronic Resource
    Electronic Resource
    Spirocyclische Verbindungen, X. Trispiro[2.1.1.2.1.1]undecan und Pentaspiro[2.1.1.1.1.2.1.1.1.1]heptadecan (1968)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 716 (1968), S. 106-111 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Gustavson-Reaktion von aus den Tetratosylaten 1a und 2a durch Kochen mit wasser-freiem LiBr in absol. Aceton gebildetem 2.2.6.6-Tetra-brommethyl-spiro[3.3]heptan (1b) bzw. 2.2.10.10-Tetra-brommethyl-trispiro[3.1.1.3.1.1]tridecan (2b) ergibt hauptsächlich Trispiro-[2.1.1.2.1.1]undecan (3a) bzw. Pentaspiro[2.1.1.1.1.2.1.1.1.1]heptadecan (4a). Nebenbei entsteht je ein Kohlenwasserstoff, der durch das IR-Spektrum als 7-Methylen-dispiro[2.1.4.1]-decan (3b) bzw. 11-Methylen-tetraspiro[2.1.1.1.4.1.1.1]hexadecan (4b) identifiziert wird. Die Konstitution von 3a und 4a wird durch die IR- und NMR-Spektren bestätigt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.19687160115
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