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  • Springer  (180)
  • Oxford University Press  (40)
  • American Meteorological Society  (28)
  • American Association of Petroleum Geologists (AAPG)
  • Copernicus
  • 2005-2009  (57)
  • 2000-2004  (47)
  • 1990-1994  (88)
  • 1975-1979  (38)
  • 1970-1974  (26)
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Publisher
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Effects of natural toad serum on heterologous vertebrate cells (1972)
    Springer
    Cellular and molecular life sciences 28 (1972), S. 466-467 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Résumé Le sérum et le plasma, nouvellement préparés, de l'AmphibienBufo marinus, ont, in vitro, un effet rapidement cytotoxique sur des cellules normales et malignes des autres Vertébrés.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02008345
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  • 2
    Electronic Resource
    Electronic Resource
    Inter-specific relationships ofLeiopelma (Amphibia: Anura): Further karyological evidence (1974)
    Springer
    Cellular and molecular life sciences 30 (1974), S. 1248-1250 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Résumé Le caryotype de la grenouille couramment classée sous le nom deLeiopelma hamiltoni McCulloch, de l'île de Maude, en Nouvelle Zélande, est décrit pour la première fois. A l'état diploïde, le nombre des chromosomes est de 18. La plus petite des paires est acrocentrique et présente de petits satellites terminaux. On n'observe pas de microchromosomes. Pendant la diacinèse de la meïose mâle on peut observer des chromosomes bivalents avec 2 chiasmas terminaux. L'évidence caryologique est en accord avec les indications précédentes concernant l'aspect extérieur et l'anatomie du squelette:L. hamiltoni ressemble davantage àL. archeyi, qu'àL. hostetteri. On suggère la nécessité d'une réévaluation taxonomique du genre.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01945165
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  • 3
    Electronic Resource
    Electronic Resource
    Karyotypes of two Australian hylids (1970)
    Springer
    Chromosoma 30 (1970), S. 38-50 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Karyotypes of the Australian frogs Hyla caerulea (White) and Hyla phyllochroa Günther were prepared and analysed from colchicine-treated, primary cultures of adult heart, lung and kidney. The diploid chromosome number for both species is 26, which resembles that of most known karyotypes of Papuan hylids but differs from that of the genus Hyla in other regions. A statistical comparison, involving data from arm ratios, centromere indices and relative lengths of metaphase chromosomes of H. caerulea incubated at 31 and 37° C respectively, showed that the differences were non-significant at the 5% level. Similar treatment of data from cells of Hyla caerulea and Hyla phyllochroa incubated at 31°C failed to show a significant species difference. Absolute lengths of haploid chromosome complements of the two species at the same temperature were found to differ significantly. No evidence of sexual heteromorphism was found. The occurrence of a terminally situated, heterochromatic zone associated with the longer arm of the 11th pair of chromosomes is described and compared with the known condition in other hylids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00293908
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  • 4
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    Effects of natural toad serum on heterologous vertebrate cells (1972)
    Springer
    Details
    Publication Date: 1972-04-01
    Print ISSN: 0014-4754
    Topics: Biology , Medicine
    Published by Springer
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  • 5
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    Inter-specific relationships ofLeiopelma (Amphibia: Anura): Further karyological evidence (1974)
    Springer
    Details
    Publication Date: 1974-11-01
    Print ISSN: 0014-4754
    Topics: Biology , Medicine
    Published by Springer
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  • 6
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    Karyotypes of two Australian hylids (1970)
    Springer
    Details
    Publication Date: 1970-01-01
    Print ISSN: 0009-5915
    Electronic ISSN: 1432-0886
    Topics: Biology , Medicine
    Published by Springer
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  • 7
    Electronic Resource
    Electronic Resource
    Analysis of the transient behavior of kidney models (1978)
    Springer
    Bulletin of mathematical biology 40 (1978), S. 211-221 
    Details
    ISSN: 1522-9602
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract Non-steady-state equations for kidney models are stated. General conservation relations for these equations are derived. Transient equations for the central core model of the renal medulla are developed. Solution of the equations by Laplace transform methods for time invariant volume flows is discussed. The general theory of solving models with time dependent flows by finite difference methods is developed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02461436
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  • 8
    Electronic Resource
    Electronic Resource
    Transient behaviour of the single loop solute cycling model of the renal medulla (1978)
    Springer
    Bulletin of mathematical biology 40 (1978), S. 273-300 
    Details
    ISSN: 1522-9602
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract Transient solutions are developed for the buildup of a concentration gradient in the single loop solute cycling model of the renal medulla. The “pump” from ascending limb to descending limb is considered in both unsaturated and completely saturated modes of operation. Both analytic solutions and semianalytic solutions obtained from inverting Laplace transforms are considered. The classic representation of concentration buildup by the multiplication process is compared with calculated profiles. The “single effect” is found to vary both in time and space.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02461602
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  • 9
    Electronic Resource
    Electronic Resource
    Externally driven countercurrent multiplication in a mathematical model of the urinary concentrating mechanism of the renal inner medulla (1994)
    Springer
    Bulletin of mathematical biology 56 (1994), S. 491-514 
    Details
    ISSN: 1522-9602
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract Substitution of measured permeabilities into mathematical models of the concentrating mechanism of the renal inner medulla yields less than the known urine osmolalities. To gain a better understanding of the mechanism we analyse a model in which a force of unspecified origin [expressed as fraction, ɛ, of entering descending thin limb (DTL) concentration] drives fluid from DTL to interstitial vascular space (CORE), thus concentrating the solution in DTL. When flow in the DTL reverses at the hairpin bend of the loop of Henle, the high solute permeability of ascending thin limb (ATL) permits solute to diffuse into the CORE thus permitting ɛ to be multiplied many-fold. Behavior of the model is described by two non-linear differential equations. In the limit for infinite salt permeability of ATL the two equations reduce to a single equation that is formally identical with that for the Hargitay and Kuhn multiplier, which assumes fluid transport directly from DTL to ATL (Z. Electrochem. Angew. Phys. Chem. 55, 539, 1951). Solutions of the equations describing the model with parameters taken from perfused thin limbs show that urine osmolalities of the order of 5000 mosm L−1 can be generated by forces of the order of 20 mosm L−1. It seems probable that mammals including desert rodents use some variant of this basic mechanism for inner medullary concentration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02460468
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  • 10
    Electronic Resource
    Electronic Resource
    Vitamin addition: an option for sustainable activated sludge process effluent quality (2000)
    Springer
    Journal of industrial microbiology and biotechnology 24 (2000), S. 267-274 
    Details
    ISSN: 1476-5535
    Keywords: Keywords: vitamins; activated sludge; industrial wastewater; porous pots; Amtox™
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The process performance and metabolic rates of samples of activated sludge dosed with vitamin supplements have been compared. After initial screening, four vitamins and two metals as single supplements and in pairs, were dosed continuously into the mixed liquor of an activated sludge simulation. Toxicity, oxygen demand removal, respiration rates and suspended solids were measured to monitor the effect on process efficiency. It was confirmed experimentally that an industrial wastewater stream did not contain a sufficient supply of micronutrients for efficient biological treatment. This was concluded from the observation that control sludge batches (receiving no supplements) averaged chemical oxygen demand removal efficiency of 58%. Dosing micronutrients into the mixed liquor produced removal efficiencies of up to 69%. Some of the supplements increased the respiration rate of the sludge while some decreased it, indicating a range of stimulatory and inhibitory effects. Complex interactions between micronutrients that were dosed simultaneously were evident. Several positive effects led to the conclusion that micronutrients have the potential to optimise process performance of activated sludge plants treating industrial wastewater. The addition of phosphorus/niacin and molybdenum/lactoflavin removed wastewater components that were toxic to nitrifiers as indicated through toxicity testing, thus protecting downstream nitrification/denitrification treatment processes. Journal of Industrial Microbiology & Biotechnology (2000) 24, 267–274.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/sj.jim.2900817
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