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  • Articles  (332)
  • Springer  (268)
  • Cell Press  (64)
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  • Articles  (332)
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  • 1
    Electronic Resource
    Electronic Resource
    The management of social experiments: A comment on the paper by IRA S. Lowry (1976)
    Springer
    Papers in regional science 37 (1976), S. 81-86 
    Details
    ISSN: 1435-5957
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01941423
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  • 2
    Electronic Resource
    Electronic Resource
    Stimulated comption effect in very compact radio sources (1971)
    Springer
    Astrophysics and space science 10 (1971), S. 431-452 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Expressions for the stimulated Compton effect are derived that are complete to order γ/ge/μ, where ε is the photon energy in the laboratory system, and γμ=γm 0 C 2 is the electron energy. Explicit formulas are given for the energy flow between a relativistic electron and a radiation field that obeys a power law so that the number of photons is proportional to ε−m−1. The amount of energy gained by an electron per second is then numerically calculated for conditions suggested by very compact radio sources as a function of the width of the spectrum, the spectral index, and the electron energy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00649686
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  • 3
    Electronic Resource
    Electronic Resource
    Choline activation of lithium transport (1973)
    Springer
    Cellular and molecular life sciences 29 (1973), S. 1249-1250 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Nachweis einer Erhöhung des Li-Austausches in Rinder-Erythrozyten bei Anwesenheit von Cholinchlorid im Extrazellularraum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01935100
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  • 4
    Electronic Resource
    Electronic Resource
    Spline prewavelets for non-uniform knots (1992)
    Springer
    Numerische Mathematik 61 (1992), S. 455-474 
    Details
    ISSN: 0945-3245
    Keywords: 65D07
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Summary In this paper, we develop a framework suitable for performing a multiresolution analysis using univariate spline spaces of arbitrary degree and with non-uniform knot-sequences. To this end, we show, among other things, the existence of compactly supported prewavelets and of prewavelets that are globally supported, but decay exponentially. In each case we obtain a decomposition of a fine spline space as a sum of a coarse spline space plus a spline space spanned by prewavelets.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01385520
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  • 5
    Electronic Resource
    Electronic Resource
    Some effects of superparasitism byLixophaga diatraeae of sugarcane borer larvae in the laboratory (1976)
    Springer
    Entomologia experimentalis et applicata 20 (1976), S. 261-269 
    Details
    ISSN: 1570-7458
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Quand des larves deDiatraea saccharalis (Borer de la canne à sucre) sont parasitées par la TachinaireLixophaga diatraeae, la mortalité s'accroît avec l'augmentation du nombre de parasites hébergés par les larves-hôtes et cela, du début du 1er stade jusqu'au 4ème stade larvaire; cependant la mortalité est plus faible chez les larves les plus âgées au moment de l'attaque du parasite. La durée du développement larvaire des asticots de la Tachinaire est plus courte chez les larves hôtes les plus âgées et diminue également en fonction du nombre de parasites par hôte; toutefois la durée du développement nymphal n'est pas affectée par le superparasitisme. Par contre le poids des pupes du parasite décroît avec la densité du parasitisme. La taille des Tachinaires n'influence pas le choix des partenaires lors de l'accouplement, mais le nombre d'œufs pondus s'accroît avec le poids des femelles. Le superparasitisme n'affecte pas la longévité du diptère parasite, mais les femelles vivent plus longtemps que les mâles, qu'elles soient issues d'un hôte faiblement ou fortement parasité. Les asticots deLixophaga muent deux fois à l'intérieur de l'hôte; elles émergent au cours du 3ème stade larvaire pour la pupaison. Une compétition se manifeste entre les asticots, le taux de survie dépendant du nombre de parasites par larve-hôte, de la localisation des asticots sur le tronc trachéen longitudinal de l'hôte, et de la promiscuité entre ces larves endoparasites.
    Notes: Abstract A fly parasite,Lixophaga diatraeae (Townshend), of the sugarcane borer,Diatraea saccharalis (F.), is currently being produced at our laboratory to determine if it can be released periodically in sugarcane fields and control sugarcane borers. This parasite is reared on sugarcane borers in the laboratory. Frequently more than one parasite develops on a single host insect and host insects vary in size. When several parasites entered the same host some did not develop because of competition between them. This problem was more acute in young host sugarcane borers than in older sugarcane borers. The early 5th stage sugarcane borer larva was the most suitable stage for parasite development.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00573831
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  • 6
    Electronic Resource
    Electronic Resource
    Entwicklung der Gewässeracidität im Schwarzwald — sind depositionsbedingte Veränderungen erkennbar? (1995)
    Springer
    Naturwissenschaften 82 (1995), S. 420-423 
    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/BF01133676
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  • 7
    Electronic Resource
    Electronic Resource
    Entwicklung der Gewässeracidität im Schwarzwald – sind depositionsbedingte Veränderungen erkennbar? (1995)
    Springer
    Naturwissenschaften 82 (1995), S. 420-423 
    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/BF01133676
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  • 8
    Electronic Resource
    Electronic Resource
    The response of Gymnodinium breve to municipal waste materials (1974)
    Springer
    Marine biology 24 (1974), S. 223-228 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The response of the unarmored dinoflagellate Gymnodinium breve, which is the causative organism in catastrophic fish kills along the Florida Gulf coast, to enrichment with selected inorganic nutrients, municipal waste materials, and various detergent components has been determined. The biostimulatory effects of the various enrichments were determined by a modification of the Provisional Algal Assay Procedure of the Joint Industry/Government Task Force on Eutrophication. Inorganic nutrients (orthophosphate, nitrate, and ammonia) were added individually and in combination, and the results were compared to equivalent enrichments with the effluent from a secondary sewage-treatment plant. The maximum cell population, Nmax, attained could be increased 3-fold by the sew-age-treatment plant effluent or by the equivalent combination of inorganic nutrients; individually, however, the inorganic nutrients had no pronounced effect on maximum cell population, Nmax (except for a 30% increase produced by slight orthophosphate enrichment). The results of these studies indiccate that, at concentrations of orthophosphate typical of Florida coastal waters (ca. 0.10 ppm), the growth-promoting potential (as reflected by Nmax) of the medium was a linear function of the ammonia-nitrogen concentration (0.01 to 0.11 ppm). The sewage-treatment plant effluent was presumably low in detergent phosphate, having been obtained from a treatment plant some 6 months after the enactment of a ban on phosphate-containing detergents. Additions of orthophosphate or detergent-phosphate to the treatment-plant effluent did not significantly increase the observed biostimulatory effect of the waste material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00391897
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of selected surfactants on the growth characteristics of Gymnodinium breve (1974)
    Springer
    Marine biology 28 (1974), S. 253-259 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Growth studies of Gymnodinium breve in nutrient enriched and unenriched medium showed that anionic surfactants have the most deleterious effects on initial response, growth rate, and maximum cell numbers as compared with cationic and non-ionics. Degradation rates were determined, and the surfactant with the most favorable rate (C12 alkyl-benzene sulfonate) was further tested. The growth constant, K e , and maximum cell number, N max , decreased with increasing amount of surfactant added to G. breve cultures (enriched sea-water media); a minimum was observed at 12.5 ppb. Above this concentration the values of K e and N max increased to approach control values. This profile was ascribed to the formation of surfactant micelles that are ineffective. The surfactant produced mortality of G. breve (90% mortality versus 12% in untreated samples) in natural red-tide samples, but other algae and zooplankton were undisturbed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00388492
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  • 10
    Electronic Resource
    Electronic Resource
    Effect of temperature on the proliferation of Gymnodinium breve and Gomphosphaeria aponina (1977)
    Springer
    Marine biology 41 (1977), S. 71-77 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effect of temperature on the growth and proliferation of two marine microorganisms, the toxigenic dinoflagellate Gymnodinium breve, and a potential bio-control organism, the blue-green alga Gomphosphaeria aponina, was determined by culturing the organisms in thermal gradients established by heating and cooling the opposite ends of an aluminum bar that had been adapted to hold culture tubes. Gradients were linear and stable for the duration of each trial. There was no relationship between variations in light and growth of the organisms. Gymnodinium breve showed optimum growth at 22°C, and proliferated over a range of temperatures (17° to 30°C). Below 17°C cultures of G. breve declined in growth, and at 4°C the organisms died within 5 h. Above 31°C there was rapid decline in viability of cells, and at 33.5°C the organism died within 24 h. Gomphosphaeria aponina showed optimum growth between 24° and 29°C, with a maximum at 27°C. Growth at temperatures greater than 31°C was minimal, but the organism survived. Limitation may be due to repression of the bio-synthesis of an iron-transport compound.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00390583
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