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  • 1990-1994  (1,123)
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  • 1
    Call number: SR 90.0001(2000-C,D)
    In: U.S. Geological Survey bulletin
    Type of Medium: Series available for loan
    Pages: III, C-30, D-10 S. + 1 pl.
    Series Statement: U.S. Geological Survey bulletin 2000-C,D
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    Series available for loan
    Series available for loan
    Washington, DC : United States Gov. Print. Off.
    Associated volumes
    Call number: SR 90.0002(1550-F)
    In: Professional paper
    Type of Medium: Series available for loan
    Pages: III, F-131 S.
    Series Statement: U.S. Geological Survey professional paper 1550-F
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 3
    Call number: SR 90.0004(2395)
    In: United States Geological Survey water-supply paper
    Type of Medium: Series available for loan
    Pages: IV, 32 S.
    Series Statement: U.S. Geological Survey water-supply paper 2395
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 4
    Series available for loan
    Series available for loan
    Washington, DC : United States Gov. Print. Off.
    Associated volumes
    Call number: SR 90.0001(1573)
    In: U.S. Geological Survey bulletin
    Type of Medium: Series available for loan
    Pages: III, 13 S. + 1 pl.
    Series Statement: U.S. Geological Survey bulletin 1573
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 55 (1990), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Trypsin (EC 3.4.21.4) was isolated from the pyloric ceca of Atlantic cod and purified to homogeneity by affinity chromatography. The enzyme catalyzed the hydrolysis of benzoyl arginine p-nitroanilide (BAPA, pH 8.2 and 25°C) such that Vmax was 250 BAPA units per micromole trypsin and Km was 1.48 mM. For the hydrolysis of tosyl arginine methyl ester (TAME, pH 8.1 and 25°C), Vmax was 18.2 × 103 TAME units/micromole trypsin, and Km 0.22 mM. The pH and temperature optima with BAPA substrate were 7.5 and 40°C, respectively. Atlantic cod trypsin was most active and stable at alkaline pH. The enzyme was heat labile, losing more than 50% of its activity after incubation at 50°C for 30 min. Amino acid analysis of Atlantic cod trypsin revealed that the enzyme was rich in residues such as serine, glycine, glutamate and aspartate, but poor in basic amino acid residues compared to trypsins from warm blooded animals.
    Type of Medium: Electronic Resource
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  • 6
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    Dordrecht : Periodicals Archive Online (PAO)
    Journal of Business Ethics. 13:6 (1994:June) 431 
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Meteorology and atmospheric physics 51 (1993), S. 73-99 
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Summary We examine a family of tall (up to 20 km) cumulonimbus complexes that develop almost daily over an adjacent pair of flat islands in the Maritime Continent region north of Darwin, Australia, and that are known locally as “Hectors”. Nine cases observed by a rawinsonde network, surface observations (including radiation and soil measurements), the TRMM/TOGA radar, and one day of aircraft photography are used to analyse the development, rainfall, surface energy budgets, and vertical structure of these convective systems. The systems undergo convective merging which is similar to that observed in previous Florida studies and is multiplicative in terms of rainfall. About 90% of the total rainfall comes from the merged systems, which comprise less than 10% of convective systems, and this has implications for the manner in which tropical rainfall is parameterised in largerscale numerical models. By comparison to the West Indies, GATE, and Florida, the Hector environment contains a weaker basic flow, with less vertical shear. The main thermodynamic difference is that the Darwin area has an unstable upper troposphere and very high tropopause. Numerical modelling results support earlier observations of updraughts in excess of 30 ms−1 in this region, but show that only modest convective drafts are experienced below the freezing level (5 km). The surface fluxes over the islands are estimated from a Monash University study to be mainly in latent form from evapotranspiration, with a Bowen ratio only slightly larger than that commonly observed over oceans. These surface fluxes are crucial to the development of a suitable mixed layer to support deep convection. The flux estimates agree with the observed changes below the cloud base and provide sufficient information for calculations of the bounds on precipitation efficiency. Of particular interest are the observations of Hector development on a day when the islands were under a dense cirrus overcast. We find that the islands still provide sufficient net sensible and latent heat fluxes to initiate convection.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of business ethics 13 (1994), S. 431-438 
    ISSN: 1573-0697
    Source: Springer Online Journal Archives 1860-2000
    Topics: Philosophy , Economics
    Notes: Abstract Softlifting (software piracy by individuals) is an unethical behavior that pervades today's computer dependent society. Since a better understanding of underlying considerations of the behavior may provide a basis for remedy, a model of potential determinants of softlifting behavior is developed and tested. The analysis provides some support for the hypothesized model, specifically situational variables, such as delayed acquisition times, and personal gain variables, such as the challenge of copying, affect softlifting behavior. Most importantly, the analysis indicated that ethical perception of softlifting has no significant affect on softlifting behavior. These findings suggest major implications for both software manufacturers and academicians attempting to reduce piracy behavior through ethics instruction.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 56 (1990), S. 259-268 
    ISSN: 1570-7458
    Keywords: Locusta migratoria ; chemoreceptors ; sucrose ; amino acids ; age effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Pendant la croissance de L. migratoria L. les réactions aux acides aminés et aux sucres des sensilles chimiques des palpes maxillaires changent. Ces changements relatifs de la sensibilité chimique à ces deux aliments correspondent aux modifications dans l'ingestion de protéines et d'hydrates de carbone par cet insecte. La diminution de la réponse aux acides aminés est liée à la fois au nombre de sensilles qui réagissent et à leur taux de réaction. La sensibilité des sensilles au sucrose varie moins profondément et implique uniquement des modifications du nombre de sensilles réagissant. Nous suggérons que des variations de la teneur en éléments nutritifs de l'haemolymphe, dues à des modifications de la demande en protéines et en glucides nécessaires à la croissance, influent sur la sensibilité gustative.
    Notes: Abstract During somatic growth in adult Locusta migratoria L. there are variations in the responsiveness of chemosensilla on the maxillary palps. Relative changes in chemosensitivity to amino acids and sucrose are consistent with relative changes in protein and carbohydrate ingestion. There is a decline throughout the somatic growth phase in the proportion of sensilla responding to stimulation. In those sensilla which respond, there is a decline in the firing rate to amino acids, while sucrose responsiveness declines to a lesser degree. We suggest that variations in the levels of nutrients in the storage tissues, especially the haemolymph, arising from changes in the demand for protein and carbohydrate for growth, directly or indirectly, influence gustatory sensitivity.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Molecular and cellular biochemistry 104 (1991), S. 35-43 
    ISSN: 1573-4919
    Keywords: α1-adrenergic receptors ; β-adrenergic receptors ; cardiac muscle ; cell culture ; gene expression ; protein kinase C
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract The molecular mechanisms of cardiac myocyte growth are relevant to important problems in cardiovascular disease. A cell culture model has been developed to explore the role of adrenergic hormones in cardiac myocyte growth and gene expression. Activation of a cardiac myocyte α1-adrenergic receptor by catecholamines induces hypertrophic growth of neonatal rat cardiac myocytes and initiates selective increases in contractile protein gene transcription. These effects on growth and gene expression do not depend on contractile activity. The cardiac myocytes contain at least two subtypes of α1-adrenergic receptors and at least three isoforms of protein kinase C (PKC). A distinct α1 receptor subtype may mediate hypertrophy and gene transcription. Different isoforms of PKC are translocated to different intracellular sites on activation, and there is evidence that the β-PKC isoform may be an element in the signal transduction pathway from an α1 receptor at the surface to the cardiac myocyte nucleus. Growth regulation through a β-adrenergic receptor can also be demonstrated in the culture model. The growth response mediated through a β-adrenergic receptor differs in several respects from that transduced through an al adrenergic receptor.
    Type of Medium: Electronic Resource
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