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
  • 1
    Electronic Resource
    Electronic Resource
    Rheological nomenclature (1975)
    Springer
    Rheologica acta 14 (1975), S. 1098-1109 
    Details
    ISSN: 1435-1528
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Zusammenfassung Es wird eine englische Übersetzung der 1972 von der Französischen Rheologischen Gesellschaft veröffentlichten rheologischen Nomenklatur gegeben.
    Notes: Summary Translations are given of definitions of terms in Rheology published in 1972 by the French Society of Rheology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01515905
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Enantioselective hydrogenation of α-ketoesters over Pt/alumina modified with cinchonidine: theoretical investigation of the substrate-modifier interaction (1994)
    Springer
    Catalysis letters 23 (1994), S. 271-279 
    Details
    ISSN: 1572-879X
    Keywords: Enantioselective hydrogenation ; α-ketoesters ; α-hydroxyesters ; cinchonidine ; modifier ; Pt/alumina ; molecular modelling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Enantio-differentiation in the asymmetric hydrogenation of α-ketoesters to α-hydroxyesters over platinum catalysts modified with cinchona-alkaloid modifiers occurs through interaction of the ketoester with the cinchona modifier. The structure of the probable transition complex has been calculated for the system methyl pyruvate (substrate) cinchonidine (modifier) using molecular mechanics and quantum chemistry techniques at both ab initio and semiempirical levels. The calculations suggest that protonated cinchonidine is energetically more likely to interact with the substrate and that the crucial interaction occurs via hydrogen bonding of the quinuclidine nitrogen and the oxygen of the α-carbonyl moiety of methyl pyruvate. In this complex the methyl pyruvate is transformed into a half-hydrogenated species which is adsorbed on the platinum surface and on hydrogenation yields the product methyll actate. Theoretical studies indicate that adsorption of the complex leading to (R) -methyl lactate is energetically more favourable than that of the corresponding complex which yields (S) -methyl lactate, which may be the key for the enantio-differentiation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00811362
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Zeemanaufspaltung bei der Superstrahlung in Neon bei λ=6143Å (1972)
    Springer
    The European physical journal 252 (1972), S. 428-434 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Zusammenfassung Das Spektrum eines gepulsten Neon-Superstrahlers bei λ=6143 Å wurde mit einem Fabry-Perot-Interferometer untersucht. Die Fabry-Perot-Aufnahmen zeigten eine Aufspaltung der Superstrahlungslinie in mehrere Komponenten, bei hohen Entladungsstromstärken im Laser bis zu 6 Linien. Diese Komponenten wurden durch eine Aufspaltung der Laserniveaus durch Zeeman-Effekt infolge des Eigenmagnetfeldes des Entladungsstromes erklärt und berechnet. Es zeigt sich befriedigende Übereinstimmung zwischen experimentellen und theoretischen Ergebnissen.
    Notes: Abstract The spectrum of neon superradiance at λ=6143 Å is calculated with regard to the Zeemansplitting induced by the magnetic field of the excitation pulse. Good agreement was found between experimental and theoretical results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01379736
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Search for delayed fission products from superheavy nuclei in the reaction136Xe+208Pb (1978)
    Springer
    The European physical journal 287 (1978), S. 57-60 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The production of superheavy elements in binary reactions of the type208Pb (136Xe, X) Y was investigated atE c.m.=470 MeV. The experiment was designed to search for delayed fission products from elements withZ between 108 and 116 and fission lifetimes ofΤ≳10−12 s. No fission events were observed the upper limit for the formation cross section being 1.2 Μbarn.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01408361
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Subway construction in Munich, developments in tunnelling with shotcrete support (1987)
    Springer
    Rock mechanics and rock engineering 20 (1987), S. 1-38 
    Details
    ISSN: 1434-453X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
    Notes: Summary The planned network for the Munich subway system has a total length of about 100 km with 106 stations. At present 46 km of subway and 50 stations are in operation. A further 17 km and 18 stations are under construction. The annual volume of construction work has reached a total of approximately 300 million DM. A stretch of 21 km has been constructed using shotcrete support. A part of this work still has to be completed. In the paper, the method of tunnelling using shotcrete is presented in its total context, whereby the important aspects are discussed under the following themes: Overview of the construction project as a whole with reference to finance, permitting procedures and realisation. Cut-and-cover and mining techniques. The construction of single-track tunnel and the excavation of large cross-sections, switches and sidings, different geotechnical procedures in dealing with water, especially compressed air operations. Experiences with contract practices, construction, questions of safety, quality and cost control, damage analysis and comparison of costs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01019509
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Pathways for oxidative fuel provision to working muscles: Ecological consequences of maximal supply limitations (1992)
    Springer
    Cellular and molecular life sciences 48 (1992), S. 557-564 
    Details
    ISSN: 1420-9071
    Keywords: Metabolic substrates ; aerobic capacity ; regulation ; glucose ; lactate ; fatty acid ; migration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The study of metabolic fuel provision and its regulation has reached an exciting stage where specific molecular events can be correlated with parameters of the organism's ecology. This paper examines substrate supply pathways from storage sites to locomotory muscle mitochondria and discusses ecological implications of the limits for maximal flux through these pathways. The relative importance of the different oxidative fuels is shown to depend on aerobic capacity. Very aerobic, endurance-adapted animals such as long distance migrants favor the use of lipids and intramuscular fuels over carbohydrates and circulatory fuels. The hypothesis of functional co-adaptation between oxygen and metabolic fuel supply systems allows us to predict that the capacity of several biochemical processes should be scaled with maximal oxygen consumption. Key enzymes, transmembrane transporter proteins, glucose precursor supply and soluble fatty acid transport proteins must all be geared to support higher maximal glucose and fatty acid fluxes in aerobic than in sedentary species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01920239
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Detection of high concentration of Mg and Ca in the nematocysts of various cnidarians (1987)
    Springer
    Cellular and molecular life sciences 43 (1987), S. 1022-1025 
    Details
    ISSN: 1420-9071
    Keywords: Calcium ; magnesium ; nematocysts ; Hydra ; Cnidaria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary An X-ray spectral analysis (EDAX) of isolated undischarged nematocysts of various cnidarians (Hydrozoa, Scyphozoa, Anthozoa) revealed the presence of extremely high concentrations of divalent cations. InHydra nematocysts both Ca2+ (conc. 0.36 μmole/mg dry cysts) and Mg2+ (conc. 0.80 μmole/mg dry cysts) ions add up to a total in situ concentration of 0.5 to 1.0 M. More than 85% of the cations, which are believed to be involved in cyst discharge, are contained in the soluble fraction of the cysts, where they must be bound to high molecular weight molecules.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01952227
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Cocarcinogens of the diterpene ester type fromCroton flavens L. and esophageal cancer in Curaçao (1978)
    Springer
    Cellular and molecular life sciences 34 (1978), S. 679-682 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary From the roots ofCroton flavens L., 3 highly irritant and tumor promoting Croton factorsF 1–F 3 and the corresponding 3 cryptic Croton factorsF′1–F′3 were isolated and characterized as novel esters of 16-hydroxy- and 4-deoxy-16-hydroxyphorbol, respectively. These findings suggest that tumor promoters of the phorbol ester type, ingested through the widespread and frequent use ofCroton flavens according to local habits, may be causally related to the well recognized high rate of esophageal cancer on Curaçao.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01947253
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Chromosome aberrations induced in the lymphocytes of pilots and stewardesses (1993)
    Springer
    Naturwissenschaften 80 (1993), S. 528-530 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01140813
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Ecological studies of the coral predator Acanthaster planci in the south pacific (1970)
    Springer
    Marine biology 6 (1970), S. 12-17 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Ecological surveys involving over 500 man-days between 1966 and 1969 indicate that the coral-eating sea star, Acanthaster planci, is a normal component of the coral reef community throughout the tropical Pacific, and that its abundance in the past has probably been underestimated. The sea star is not uncommon in certain environments, particularly back-reef and lagoon slopes. Sheltered, inner reefs are generally preferred over less protected reefs. Recently reported “population explosions” of A. planci at Guam and on the Great Barrier Reef of Australia appear to be isolated, widely-separated, local infestations of unknown cause. The infestation on the Great Barrier Reef has not spread beyond the area off Cairns and Innisfail. Approximately 40 of the more than 1000 reefs comprising the Great Barrier Reef complex have been infested heavily.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00352602
    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...