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  • Springer  (77)
  • Molecular Diversity Preservation International
  • PANGAEA
  • 1985-1989  (69)
  • 1970-1974  (8)
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  • 11
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    Springer
    Current genetics 13 (1988), S. 271-271 
    ISSN: 1432-0983
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 13
    ISSN: 1432-0983
    Keywords: E. coli trpC ; Schizophyllum TRP1 ; Complementation ; Gene isolation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A Schizophyllum gene library was made in plasmid pRK9, Plasmids from this library were tested for their ability to complement several auxotrophic mutations of Escherichia coli. The goal was to isolate a Schizophyllum auxotrophic gene that could be used to transform a corresponding Schizophyllum auxotrophic mutant to prototrophy. Complementation was observed only for E. coli trpC indole 3-glycerol phosphate synthetase (IGPS) and phosphoribosyl-anthranilate isomerase (PRAI) mutations. Plasmids with a Schizophyllum sequence coding for both IGPS and PRAI activities were recovered from E. coli transformants. Expression of the Schizophyllum gene (TRP1) in E. coli is probably dependent on the Serratia marcescens promoter of plasmid pRK9. The DNA sequence containing the Schizophyllum TRP1 gene was not obviously rearranged in cloning.
    Type of Medium: Electronic Resource
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  • 14
    ISSN: 1432-0983
    Keywords: Schizophyllum commune ; Transformation ; Gene isolation ; Basidiomycetes ; Recombinant DNA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We have developed a routine way to isolate genes directly from the basidiomycete fungus, Schizophyllum commune. Plasmid DNA from a genomic gene library was used to isolate five specific genes by complementation of Schizophyllum mutations via transformation. The mutant strains were deficient in the ability to synthesize either adenine (ade2 and ade5), uracil (ural, encoding orotidine-5′-phosphate decarboxylase; OMPdecase), tryptophan (rpl, encoding indole-3-glycerol phosphate synthetase; IGPS) or para aminobenzoic acid (pab1). In each case, Southern analysis revealed that transformation to prototrophy was concomitant with the integration of vector sequence into the genome of the S. commune mutant. Total DNA from transformants was restricted, religated, and used to transform E. coli. Ampicillin resistant plasmids were recovered from E. coli and tested for their ability to transform the corresponding mutant of S. commune. Plasmids complementing the ade2, adeS, pabl, trpl, and ural mutations were recovered.
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  • 15
    Electronic Resource
    Electronic Resource
    Springer
    International journal of earth sciences 77 (1988), S. 529-538 
    ISSN: 1437-3262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Abstract The Serres de Llevant thrust-and-fold segment outcrops along the SE coast of Mallorca (Balearic Isles, Spain) and represents the eastern continuation of the external zones of the Alpine Betic Range. The structure of the Serres de Llevant consists mainly of northwest-directed thrusts which involve a sedimentary series ranging in age from Upper Triassic to Middle Miocene. The thrusts form a thrust system developed both by piggy-back and out-of-sequence thrusting. Thrust sheets are imbricated to the SE and to the SW and, in the northern part, also to the NE, giving rise to a complex 3-D pattern. The thrusts and related folds developed during the Oligocene and the Lower and Middle Miocene. The thrust transport direction has been inferred from the stratigraphic facing directions of all mapped ramps, and has been determined with the aid of other transversal structures. The resulting transport direction is from SE to NW (N310E). One of the most significant structural features of the Serres de Llevant thrust segment is the existence of several lateral and oblique structures. These structures are ramps which display stratigraphic facing directions both to the NE and SW. Other lateral structures represented in the northern part of the thrust segment are tear and drop faults. In the southern part, kilometric-scale oblique folds are exposed.
    Abstract: Résumé Les Serres de Llevant occupent la partie sud-orientale de Majorque (Îles Baléares, Espagne); elles font partie d'une ceinture de plis et chevauchements, et représentent la continuation vers le NE des zones externes de la ChaÎne Bétique. La structure des Serres de Llevant est caractérisée par des chevauchements dirigés vers le NW, affectant des matériaux sédimentaires d'âges compris entre le Trias supérieur et le Miocène moyen. Les chevauchements forment un système de failles à déplacement à la fois vers l'avant-pays et vers l'arrière-pays. Les lames sont empilées les unes sur les autres vers le SE et vers le SW; cependant, dans la partie septentrionale cet empilement s'opère aussi vers le NE, donnant lieu à une disposition tridimensionnelle assez complexe. Les chevauchements et les plis associés se sont développés pendant l'Oligocène et le Miocène inférieur et moyen. La direction de transport a été déduite de la polarité stratigraphique de l'ensemble des rampes cartographiées, et a été précisée à l'aide d'autres structures transverses. La direction de transport est du SE vers le NW (N 310
    Notes: Zusammenfassung Der Serres de Llevant überschiebungs- und Faltenbereich ist an der südöstlichen Küste Mallorcas (Ballearen, Spanien) aufgeschlossen. Er stellt die östliche Fortsetzung der Externzone der betischen Gebirgskette dar. Die Struktur des Serres de Llevant besteht im wesentlichen aus einem NW gerichteten Deckenbau. Das Alter der betroffenen Sedimentserien umfa\t Obere Trias bis Mittleres Miozän. Das überschiebungssystem ist aus »piggy-back« und »out-of-sequence« überschiebungen entstanden. Die Dekken greifen dachziegelartig übereinander, so da\ nach SE und SW höhere strukturelle Einheiten zu finden sind. Die dreidimensionale Geometrie dieses Deckenbaus ist im nordöstlichen Teil der Ketten besonders komplex. Die überschiebungen und die zugehörigen Fakten entwickelten sich während des Oligozäns und des Unteren und Mittleren Miozäns. Die Transportrichtung ist von der Polarität aller kartierten Rampen abgeleitet worden und mit Hilfe anderer Querstrukturen genauer bestimmt worden. Die so bestimmte Transportrichtung ist N310E. Einer der bedeutendsten strukturellen Züge des überschiebungssystemes der Serres de Llevant ist das Vorhandensein von Seiten- und Schrägstrukturen, vor allem NE und SW gerichteten Rampen. Im nördlichen Teil der Ketten kann man »tear«- und »drop«-Störungen beobachten. Im südlichen Teil sind kilometergro\e Schrägfalten aufgeschlossen.
    Type of Medium: Electronic Resource
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  • 16
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Ein spektrophotometrisches Verfahren zur Eisenbestimmung wurde beschrieben. Der grüne Fe(II)-Komplex bildet sich bei pH 4,8 in einem Medium aus 40% Dimethylformamid und 0,8 g/l Askorbinsäure. Die Absorbanz wird bei 635 nm gemessen. Die molare Absorptivität beträgt 5,7× 103l·mol−1·cm−1. Die Methode gab gute Resultate bei der Bestimmung von Eisen in sechs Legierungen und Erzen.
    Notes: Summary A spectrophotometric method for the determination of iron is described. The green Fe(II) complex is formed at pH 4.8 in a medium containing 40% dimethylformamide and 0.8 g/l ascorbic acid, and the absorbance is measured at 635 nm. The molar absorptivity is 5.7×103lo·mole−1·cm−1. The method has been applied with good results to the determination of iron in six alloys and ores.
    Type of Medium: Electronic Resource
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  • 17
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 39 (1986), S. 287-289 
    ISSN: 1432-0630
    Keywords: 75.60 ; 76
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Isothermal disaccommodation curves in vacancy-doped magnetite at room temperature show a typical Richter-type behaviour. Magnetic susceptibility decreases asymptotically according to a relaxation time of about 102 s, which is analyzed in terms of a progressive stabilization of the domains walls. The relaxation strength, vacancies and the restoring pressure on the Bloch walls are closely related.
    Type of Medium: Electronic Resource
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  • 18
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 46 (1988), S. 191-196 
    ISSN: 1432-0630
    Keywords: 61.70.Tm ; 79.20.Ds ; 72.80.Ey
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Ge diffusion into GaAs from thin evaporated layers as sources is reported. Irradiation with aQ-switched ruby laser gives rise ton-type diffused layers of a thickness from 240 to 710 Å. A strong compensation of the diffused layers, that cannot be removed by thermal annealing, was observed. From the present experimental results it can be inferred that the diffusion coefficient increases at the melting point by 5 to 6 orders of magnitude.
    Type of Medium: Electronic Resource
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  • 19
    ISSN: 1420-9071
    Keywords: Rat, adrenal ; rat, spleen ; adrenal, rat ; spleen, rat ; fasting ; cold exposure ; dopamine-beta-hydroxylase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Fasting (48 h) results in dopamine-beta-hydroxylase (DBH) release both in adrenal gland and spleen, suggestive of an increase in the activity of these organs. Cold exposure (48 h) produces a dissociation of the, sympathoadrenal response. When both stimuli are simultaneously employed, the DBH response suggests the preponderance of the response to fasting. Plasma DBH is decreased in all groups studied, this could be due to its half-life and the splenic DBH depletion.
    Type of Medium: Electronic Resource
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  • 20
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 43 (1987), S. 166-168 
    ISSN: 1420-9071
    Keywords: Bilirubin ; glucose ; glucuronosyl transferase ; rabbit ; bilirubinemia ; conjugates ; bilirubin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The effect of i.v. infusion of glucose on the hepatic handling of bilirubin was examined in rabbits. A significant increase in the excretion of conjugated bilirubin into the bile was observed, accompanied by a decrease in bilirubinemia. Hepatic bilirubin concentrations were lowered and the UDP-glucose concentrations and liver UDP-glucuronosyl and UDP-glucosyl transferase activities increased.
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