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  • 1985-1989  (1,297)
  • 1945-1949  (9)
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  • 1
    Electronic Resource
    Electronic Resource
    Metagabbro and associated eclogites in the Lubrin area, Nevado-Filabride Complex, Spain (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of metamorphic geology 5 (1987), S. 0 
    Details
    ISSN: 1525-1314
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Abstract Several small bodies of metabasite (maximum dimensions of 1000 m x 500 m) are included in the metamorphic rocks of the Nevado-Filabride Complex in the Betic Cordilleras (Almeria Region). The body of 400 m x 100 m, located 200 m due west of the Lubrin village, contains troctolitic gabbro with well-preserved igneous textures and mineral compositions, wholly amphibolitized gabbro, garnet-bearing metagabbro eclogite. Along with the textural and mineral changes, sensible and regular geochemical variations can be observed, where the content of MgO decreases from 24% to 11%, while that of CaO and Na2O increases from 7% to 11% and from 2% to 3%, respectively. In addition, the content of some minor elements such as Sr, Y, Nb, Zr and Sc increases while that of Ni and Cr decreases from troctolitic gabbro to the eclogite. The amphibolitized gabbro shows values scattered around those of the troctolitic gabbro. These geochemical variations are ascribed to inherited differences in the pre-metamorphic protolith, i.e. a fractionated gabbro which varies from olivine-rich to clinopyroxene-rich gabbro. Nevertheless, some metasomatism affected the Lubrin body without changing the main chemical trends, as documented by the significantly different 87Sr/86Sr ratios of each rock-type. This points to a metasomatism which involved the introduction of crustal radiogenic strontium. The petrographical and mineral chemical features are interpreted to be the result of syn-metamorphic fluid circulation possibly combined with deformation by shearing. The igneous texture and mineral chemistry have been retained wherever both fluid circulation and shearing were ineffective. On the contrary, where both events were effective, the formation of eclogite occurred. Later, the entire body underwent a retrogressive amphi-bolitic stage under greenschist facies conditions, which was probably responsible for the formation of the amphibolitized gabbro portion and for the retrogression of the eclogite.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1525-1314.1987.tb00377.x
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  • 2
    Electronic Resource
    Electronic Resource
    A simple apparatus for self-separation of post-larval prawns, Macrobrachium spp., in mixed larval rearing tanks (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 16 (1985), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. A device for self-separating newly metamorphosed post-larvae prawns from larval culture tanks was designed based on the rheotactic activity exhibited by freshwater prawns after metamorphosis into post-larvae. The performance and effectiveness of the post-larvae selector were evaluated under (a) 24-h periods, (b) four water flows and (c) at two tank depths. A high migratory response (90% confidence level) during the dark period with a water flow range of approximately 11 pm was found. Thus the device has shown to be highly efficient in separating post-larvae in mixed population tanks. The avoidance of excessive handling stress, and the continuous automatic removal of post-larvae immediately following metamorphosis into juveniles are two of the most important advantages of this design as compared to other separation devices.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2109.1985.tb00076.x
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  • 3
    Electronic Resource
    Electronic Resource
    Autosomal dominant macroglossia in two unrelated families (1986)
    Springer
    Human genetics 〈Berlin〉 74 (1986), S. 200-202 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Two unrelated families, one with 15 and the other with 3 members affected with macroglossia as a sole trait, are described. It is concluded that this entity differs from previously reported syndromes presenting macroglossia and is inherited in an autosomal dominant fashion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00282095
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  • 4
    Electronic Resource
    Electronic Resource
    Zinc accumulation in the telencephalon of lizards (1987)
    Springer
    Histochemistry and cell biology 86 (1987), S. 311-314 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The zinc concentration in the brains of two species of lizard was determined by atomic-absorption spectrophotometry. The zinc concentration was found to be highest in the telencephalon of Lacerta galloti (21.1 μg/g fresh weight) and Podarcis hispanica (16.77±0.8 μg/g) while the mesencephalon and brain stem exhibited lower zinc concentrations, i.e., 7.0 μg/g in Lacerta galloti and 6.08±0.4 μg/g in Podarcis hispanica. This high telencephalic concentration of zinc is paralleled by intense and well-defined Timm reactivity used for demonstrating the presence of zinc-containing boutons at the light-microscope level. Volumetricdensitometric studies of these Timm-reactive zones were performed using serial transverse sections of the same lizard brains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00490264
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  • 5
    Electronic Resource
    Electronic Resource
    Carrier scattering mechanisms in P-type indium selenide (1989)
    Springer
    Applied physics 48 (1989), S. 445-450 
    Details
    ISSN: 1432-0630
    Keywords: 72,10
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Carrier scattering mechanisms in p-indium selenide are investigated by means of the temperature dependence of the Hall mobility (160–500 K) and thermopower (200–300 K). An anomalous behaviour of the Hall voltage, which changes sign below 215 K, is interpreted through the existence of planar aggregates of ionized shallow donor impurities that create potential wells behaving as deep donors and in which a low concentration of two-dimensional free electrons can exist. This fact is taken into account through equations for two-carrier Hall effect. Holes are found to be predominantly scattered by anA ′ 1 homopolar phonon with an energy of 27.8 meV. From thermopower results, the density of states effective mass in the valence band is determined,m dv * =(1.5±0.2)m 0.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619716
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of pectin on pectinases in autolysis of Botrytis cinerea (1988)
    Springer
    Mycopathologia 102 (1988), S. 37-43 
    Details
    ISSN: 1573-0832
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Pectic activity in autolyzed cultures of Botrytis cinerea in a medium with and without pectin was similar, but in the medium with pectin maximal activities occurred in younger cultures. The pectic activities found were polygalacturonase, polymethylgalacturonase, endo activity (pectin as substrate) and pectin lyase. The molecular weights of polygalacturonase, polymethylgalacturonase and endo activity (pectin as substrate) were 36000, 33000 and 30200 daltons respectively, and the molecular weight of pectin lyase was 18200 daltons. By gel electrophoresis four different pectic activities were detected, three in the top of the gel and one in the bottom. Two enzymes were characterized, the polygalacturonase activity (first band in the top) inhibited by Ca++ and the pectin lyase activity (in the bottom) which was not inhibited by Ca++. These enzymes are not induced by the presence of pectin in the medium during degradation of Botrytis cinerea.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00436250
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  • 7
    Electronic Resource
    Electronic Resource
    The pathogenic fungi of the spittlebug in Mexico. III. Innocuity ofErynia neoaphidis andConidiobolus major in experimental animals (1986)
    Springer
    BioControl 31 (1986), S. 371-376 
    Details
    ISSN: 1573-8248
    Keywords: Erynia neoaphidis ; Conidiobolus major ; innocuity ; experimental animals ; biological control agents
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé L'utilisation des Entomophthorales dans la lutte biologique contre les insectes n'est possible qu'après avoir vérifié leur innocuité vis-à-vis des vertébrés. Dans ce but, des injections sous-cutanées et intrapéritonéales ont été réalisées chez 274 animaux (cobayes et souris) à l'aide de mycélium et spores deErynia neoaphidis etConidiobolus major pathogènes de la “mosca pinta”. Les seules lésions tissulaires observées sont des nodules, des abcès et des adhérences au niveau de la rate, du foie, des reins et du péritoine. Les champignons n'ont jamais pu être réisolés à partir des divers organes. Les observations histopathologiques ne montrent aucune altération pathologique importante; seuls des filaments lysés entourés de polymorphonucléaires ont pu être retrouvés. Ces résultats indiquent l'innocuité deE. neoaphidis etC. major vis-à-vis des souris et des cobayes.
    Notes: Abstract Previous research concerning theEntomophthorales has demonstrated their capabilities as biological control agents. To use them widely and at industrial levels, studies to demonstrate their innocuity in animals must be made. The present study concerns the intraperitoneal and subcutaneous inoculation of 274 animals (mice and guinea pigs) withErynia neoaphidis Remaudière & Hennebert andConidiobolus major (Thaxter) Remaudière & Keller, fungi pathogenic for the spittlebug [Aeneolamia postica (Walk) andProsapia simulans (Walk)] in Mexico. The alterations found were macroscopic tissue lesions consisting of nodules, abscesses and adhesions in the liver, spleen, kidneys and intraperitoneal cavity. No fungi could be recovered from organs at any time and only lysed filaments surrounded by polymorphonuclear cells could be seen at day 8 post-inoculation. The histopathological findings showed no important pathological alterations. These results suggest the innocuity ofErynia neoaphidis Remaudière & Hennebert andConidiobolus mamor (Thaxter) Remaudière & Keller in mice and guinea pigs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02373153
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  • 8
    Electronic Resource
    Electronic Resource
    Synthesis of benzothiophenes in gas phase from aromatic hydrocarbons and carbon disulfide (1986)
    Springer
    Reaction kinetics and catalysis letters 30 (1986), S. 157-163 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Изучен способ синтеза бензотиофенов в газовой фазе, используя ароматическое соединение и сероуглерод, как источник серы, на ортофосфате алюминия, как катализаторе типа Кёрбая. Наилучшие вуходы бензотиофена (53%) были достигнуты в очень селективной реакции для винилбензола.
    Notes: Abstract A way of synthesis of benzothiophenes, in the gas phase, employing a monosubstituted aromatic compound, carbon disulfide as sulfur source and a Kearby type aluminium orthophosphate as catalyst, has been studied. The best yields in benzothiophene (53%) were reached when vinylbenzene was employed, in a very selective reaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02068160
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  • 9
    Electronic Resource
    Electronic Resource
    Reduktive Arylierung von Vinyl-trifluoromethansulfonaten durch Friedel-Crafts-Reaktion (1987)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 120 (1987), S. 1255-1256 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reductive Arylation of Vinyl Trifluromethanesulfonates by Friedel-Crafts ReactionThe reaction of vinyl triflates 1 with benzene and toluene in the presence of aluminium trichloride gives alkyl-, alkenyl-, and 1,1-diarylalkanes 5, 6, 3, 9 depending on the structure of the substrate used. A mechanism for the reductive arylation is proposed.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19871200724
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  • 10
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    Thiosemicarbazones derived from 2,6-diacetylpyridine as tri- and pentadentate ligands of heavy metal ions (1986)
    Elsevier
    Details
    Publication Date: 1986-01-01
    Print ISSN: 0584-8539
    Electronic ISSN: 1873-3824
    Topics: Chemistry and Pharmacology , Physics
    Published by Elsevier
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