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  • 1975-1979  (11)
  • 1970-1974
  • 1975  (11)
  • 1
    Digitale Medien
    Digitale Medien
    Simulating experiments for Spacelab: Measurements of ozone and minor atmospheric constituents (1975)
    [s.l.] : Nature Publishing Group
    Nature 257 (1975), S. 649-649 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In June this year a number of flights were made in a NASA CV990 aircraft to evaluate designs for experiments to be carried aboard Spacelab from 1980 onwards. Here five of the groups involved describe what they achieved. NASA and the European Space Agency recently decided to carry out another ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/257649a0
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  • 2
    Digitale Medien
    Digitale Medien
    Potassium tetrabromopalladate(II) (1975)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 31 (1975), S. 2538-2539 
    Details
    ISSN: 1600-5740
    Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Thema: Chemie und Pharmazie , Geologie und Paläontologie , Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1107/S0567740875008060
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  • 3
    Digitale Medien
    Digitale Medien
    Tabulation of the harmonic coefficients of the solar magnetic fields (1975)
    Springer
    Solar physics 41 (1975), S. 225-226 
    Details
    ISSN: 1573-093X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Tables of spherical harmonic coefficients for the global photospheric magnetic field between 1959 and 1974 are now available on microfilm. (These are the same coefficients which were used to construct the maps of the coronal magnetic atlas.)
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00152968
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  • 4
    Digitale Medien
    Digitale Medien
    Malaria, favism and glucose-6-phosphate dehydrogenase deficiency (1975)
    Springer
    Cellular and molecular life sciences 31 (1975), S. 1145-1147 
    Details
    ISSN: 1420-9071
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary Although glucose-6-phosphate dehydrogenase deficient individuals may suffer (sometimes fatally) from favism, a high incidence of this trait occurs in many Mediterranean populations. This apparent paradox is explained on the basis of a synergistic interaction between favism and G-6-PD deficiency that provides increased protection against malaria compared to that of the G-6-PD deficiency alone. This relationship is analogous to that between various hemoglobins and malaria in that there is selection for a more severe trait if it provides more protection against malaria.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02326760
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  • 5
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    Unbekannt
    PIANO LAB AT M.I.T. (1975)
    New York : Periodicals Archive Online (PAO)
    Music journal. 33:7 (1975:Sept.) 12 
    Details
    ISSN: 0027-4364
    Thema: Musikwissenschaft
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:1166-1975-033-07-000003
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  • 6
    Digitale Medien
    Digitale Medien
    Dopaminergic mediation of the interoceptive cue produced by d-amphetamine in rats (1975)
    Springer
    Psychopharmacology 42 (1975), S. 185-193 
    Details
    ISSN: 1432-2072
    Schlagwort(e): Amphetamine ; Dopamine ; Haloperidol ; State-Dependent Behavior ; Apomorphine
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract After rats were trained to differentiate between the effects of d-amphetamine and saline in a state-dependent task, pretreatment with the tyrosine hydroxylase inhibitor, α-methyl-p-tyrosine, significantly decreased amphetamine discrimination. Pretreatment with the dopamine-Β-hydroxylase inhibitor, disulfiram, or with the tryptophan hydroxylase inhibitor, p-chloro-phenylalanine, was observed to have no effect on the rats' ability to discriminate d-amphetamine. Administration of haloperidol, a selective dopamine receptor blocker, completely abolished the amphetamine discrimination, whereas α- and Β-adrenergic receptor blockade had no effect. Apomorphine, a dopamine receptor stimulant, produced amphetamine-like responses and this was, likewise, abolished by pretreatment with haloperidol. These data suggest that dopaminergic systems mediate the interoceptive cue produced by d-amphetamine in rats, and these results are discussed in relation to possible dopamine mediation of amphetamine psychosis and paranoid schizophrenia.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00429551
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  • 7
    Digitale Medien
    Digitale Medien
    Paradoxical absence of aggression during naloxone-precipitated morphine withdrawal (1975)
    Springer
    Psychopharmacology 43 (1975), S. 43-46 
    Details
    ISSN: 1432-2072
    Schlagwort(e): Aggression ; Morphine ; Naloxone ; Apomorphine ; Amphetamine ; Narcotic Withdrawal
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Aggression, which is normally seen during withdrawal from narcotics, could not be produced in morphine-dependent rats by the administration of naloxone at doses which cause other signs of withdrawal. Apomorphine injected instead of naloxone was capable of producing aggression, without other withdrawal signs. Naturally occurring aggression (72-hr withdrawal) was enhanced by apomorphine and unaffected by naloxone.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00437613
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  • 8
    Digitale Medien
    Digitale Medien
    On the continuity of the maximum in parametric linear programming (1975)
    Springer
    Journal of optimization theory and applications 17 (1975), S. 205-210 
    Details
    ISSN: 1573-2878
    Schlagwort(e): Linear programming ; parametric linear programming ; semicontinuity ; operations research ; inequality theory
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik
    Notizen: Abstract For the widest class of parametric linear programs with continuous dependence of coefficients on parameters, the following theorem is proven: for any parameter vectort 0 in the domain of definition of the maximum, if the set of optimal solutions is bounded, then the maximum is upper semicontinuous att 0. If the same proviso is met also in the dual program, then the maximum must be continuous att 0.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00933875
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  • 9
    Digitale Medien
    Digitale Medien
    Advances in rearing ofLixophaga diatraeae [Dipt.: Tachinidae] (1975)
    Springer
    BioControl 20 (1975), S. 307-311 
    Details
    ISSN: 1573-8248
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Beschreibung / Inhaltsverzeichnis: Résumé De grands nombres deLixophaga diatraeae (Townsend), tachinaire parasite du foreur de la canne à sucre (Diatraea saccharalis F.) sont nécessaires pour procéder à des essais de lâchers inondatifs destinés à démontrer si ce parasite peut être utilisé en lutte biologique contre le foreur de la canne à sucre. Les méthodes employées jusqu'à présent pour l'élevage deL. diatraeae sont inadaptées à un programme d'élevage de masse. Les larves du foreur sont élevées dans des coupelles de 30 ml avec un milieu artificiel. Des techniques sont mises au point pour récolter les parasites adultes à l'émergence, extraire les asticots du 1er stade des tachnaires femelles, infester les larves du foreur de la canne à sucre avec ces asticots et détruire la dépouille de la larve hôte à l'aide de NaOCl à 1% pour réduire la contamination par des microbes de la pupe du parasite. D'importantes quantités deL. diatraeae ont été élevées ainsi avec succès en vue le lâchers sur le terrain effectué en Floride et en Louisiane.
    Notizen: Abstract Larvae ofDiatraea saccharalis (F) were reared on artificial diet in 30-ml cups (1–3 larvae/cup). Adults of the larviparous tachinid parasite,Lixophaga diatraeae (Townsend), were removed from emergence and holding cages with a modified vacuum sweeper. Maggots were extracted from 10 to 14-day-old female flies, that had been disinfected with 1% NaOCl by one of two methods. In method I, fly uteri were removed and placed in a 10-ml vial containing a 0.15% agar-water solution with 3–4 glass beads; rapid vibration of the vial ruptured the uteri and distributed the maggots in the agar solution. In method 2, whole flies were blended with 50-ml water in a blender, and maggots were separated from fly particles by screening; then they were suspended in the agar solution. A procedure was devised for determining the number of maggots obtained by each method. The maggot-agar solution was injected into cups containing host larvae and maggots sought out and parasitized the host larvae; however, the percentage producing puparia generally decreased with increases of host larva and/or maggot density. Puparia were harvested from cups by hand and washed in 1% NaOCl to disinfect and destroy host larval webbing.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02371956
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  • 10
    Digitale Medien
    Digitale Medien
    Development ofDiatraea Saccharalis [Lep.: Pyralidae] at constant temperatures (1975)
    Springer
    BioControl 20 (1975), S. 301-306 
    Details
    ISSN: 1573-8248
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Beschreibung / Inhaltsverzeichnis: Résumé Le foreur de la canne à sucre,Diatraea saccharalis (F) est utilisé comme hôte pour l'élevage de la mouche de Cuba, tachinaire parasite (Lixophaga diatraeae Townsend). Ces tachinaires seront lâchées en grand nombre en Louisiane et en Floride pour déterminer la possibilité de recourir à un parasite pour la lutte contre le foreur de la canne à sucre. Une production satisfaisante de n'importe quel insecte en laboratoire exige une connaissance détaillée de la durée des différents stades de développement aux températures appropriées et la détermination des conditions d'élevage les plus favorables. La durée des stades: œuf, larves, nymphe et adulte et le pourcentage de mortalité sont établis pour des températures allant de 15,6 à 34°C. Les températures les plus favorables pour le développement le plus rapide et pour la meilleures survie des différent stades sont les suivantes: 26°C pour l'œuf, 28°C pour la chenille, 26°C pour la chrysalide et 24°C pour le papillon.
    Notizen: Abstract At constant temperatures between 15.6 and 32°C the incubation time of eggs ofDiatraea saccharalis (F.) was reduced by each increase in temperature. At 34°C the time decreased. Highest (98.6%) and lowest (9.9%) egg hatch occurred at 26 and 34°C, respectively. Larvae completed development at temperatures ranging from 22 to 34°C; however, only 4.4% of the larvae pupated at 34°C. Duration of the larval stage at 30°C (♂=18.1 days; ♀=19.1 days) was ca. 14 days shorter than at 22°C. Maximum rate of development in the pupal stage occurred at 28°C (ca. 6.8 days), and a higher temperature increased developmental time and mortality. Adult longevity and egg production generally were reduced with increasing temperatures and egg production was highest at 24°C (729.8 eggs/ moth). As many as 7 larval stages occurred; but most larvae completed development in 5 stages, and none completed development in less than 5 stages. The female larval stage was ca. 1 day longer than that of males, and this difference occurred primarily in the 5th stage.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02371955
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