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  • Articles  (66)
  • Springer  (66)
  • American Association of Petroleum Geologists (AAPG)
  • 1985-1989  (34)
  • 1975-1979  (15)
  • 1920-1924  (1)
  • 1905-1909  (16)
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  • Articles  (66)
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  • 1
    Electronic Resource
    Electronic Resource
    Vergleich verschiedener planarer Passivierungstechniken für Halbleiterleistungsbauelemente (1989)
    Springer
    Electrical engineering 72 (1989), S. 89-94 
    Details
    ISSN: 1432-0487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Description / Table of Contents: Contents Different passivation techniques for planar semiconductor power devices with blocking voltages of 1600 V are studied using two-dimensional numerical simulations.
    Notes: Übersicht Für die Entwicklung einer optimalen Planar-passivierung von Halbleiterleistungsbauelementen mit Sperrspannungen von 1600 V wird ein Vergleich verschiedener Strukturen anhand zweidimensionaler numerischer Simulationen durchgeführt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01573642
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  • 2
    Electronic Resource
    Electronic Resource
    Observations of vertical atmospheric structure in a deep mountain valley (1977)
    Springer
    Meteorology and atmospheric physics 26 (1977), S. 39-50 
    Details
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Description / Table of Contents: Zusammenfassung Im Dezember 1975 wurden durch eine Fesselballonsonde die vertikalen Temperatur- und Windprofile im Gore River Valley im westlichen Colorado ermittelt. Aus Beobachtungen an einem wolkenlosen Morgen bei einer anfangs starken Inversion im Tal zeigte sich, daß die Inversionsobergrenze stetig um 120 m Std−1. absank und nach ungefähr vier Stunden den Talgrund erreichte. Schwache Talabwinde wehten innerhalb der Inversionsschicht. während stärkere Talaufwinde oberhalb derselben herrschten. Eine Hypothese wird vorgeschlagen, um diese Beobachtungen zu erklären. Die Abkühlung am späten Nachmittag und am Abend, wobei die Bildung einer Inversion einsetzte, deren Schichtdicke in weniger als zwei Stunden 175 m betrug, ist Gegenstand einer gesonderten Untersuchung. Winde innerhalb der Inversionsschicht wurden nicht mehr von den Winden in der freien Atmosphäre beeinflußt und blieben im Laufe der Nacht sehr schwach. Bewölkung während der Erwärmungsperiode an einem Morgen hatte zur Folge, daß das Temperaturprofil sich Isothermie näherte, indem Erwärmung gleichmäßig im ganzen Luftraum des Tales sich fortsetzte.
    Notes: Summary A tethered balloon sounder was used to collect vertical temperature and wind structure data in the Gore River Valley of Western Colorado during December, 1975. Observations taken on a clear morning in which a deep inversion was initially present in the valley showed that the inversion top descended at a steady rate of ∼120 m hr−1. reaching the valley bottom after approximately 4 hours. Weak down-valley winds were present within the inversion layer while stronger up-valley winds prevailed above. A hypothesis is presented to account for these observations. A case study is presented for afternoon and evening cooling in which a ground-based inversion developed to a depth of 175 m in less than 2 hours. Winds within the inversion became decoupled from the synoptic-scale winds and remained very weak during the night. The effect of cloud cover during a morning heating cycle was to make the temperature soundings approach isothermal while sensible heating continued throughout the valley volume.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02246534
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  • 3
    Electronic Resource
    Electronic Resource
    Human ferritin H and L sequences lie on ten different chromosomes (1987)
    Springer
    Human genetics 〈Berlin〉 76 (1987), S. 66-72 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In humans, the H (heavy) and L (light) chains of the iron-storage protein ferritin, are derived from multigene families. We have examined the chromosomal distribution of these H and L sequences by Southern analysis of hybrid cell DNA and by chrosomal in situ hybridization. Our results show that human ferritin H genes and related sequences are found on at least seven different chromosomes while L genes and related sequences are on at least three different chromosomes. Further, we have mapped the chromosomal location of expressed genes for human H and L ferritin chains and have found an H sequence which may be a useful marker for idiopathic hemochromatosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00283053
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  • 4
    Electronic Resource
    Electronic Resource
    A High-Performance Liquid Chromatographic Microassay Employing a Liquid–Solid Extraction Technique for Etintidine in Plasma (1987)
    Springer
    Pharmaceutical research 4 (1987), S. 133-136 
    Details
    ISSN: 1573-904X
    Keywords: etintidine ; high-performance liquid chromatography (HPLC) ; solid extraction ; determination of etintidine in plasma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract This paper describes a new, rapid solid extraction method for the determination of etintidine in plasma. The method employs a semiautomatic sample preparation system. Plasma samples and the internal standard (cimetidine) were applied onto octyl-bonded silica extraction columns. The extraction columns were then subjected to Tris buffer and water wash and were subsequently loaded onto an automatic sample injection system. The contents of the extraction columns were eluted on-line with a mobile phase of acetonitrile:methanol:0.1% ammonium hydroxide (85:10:5, by volume) onto a silica analytical column and detected by UV absorption at 229 nm. The chromatographic condition separates etintidine from some of its metabolites and other endogenous components in plasma. The detection limit for etintidine was 0.02–0.05 µg/ml when 0.2 ml of plasma was used. This method has been used for the determination of plasma etintidine levels in humans and mice after oral administration of etintidine and was found to be suitable for pharmacokinetic/bioavailability studies of etintidine in humans and animals. The method can also be used for the quantitative determination of cimetidine and certain metabolites of etintidine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1016419019715
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  • 5
    Electronic Resource
    Electronic Resource
    Die Wirkungen der totalen Leberexstirpation (1924)
    Springer
    Reviews of physiology, biochemistry and pharmacology 23 (1924), S. 212-273 
    Details
    ISSN: 1617-5786
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Zusammenfassung Kurz zusammengefasst sind die wichtigsten, hier niedergelegten Tatsachen folgende: Es wurde eine Methode für die totale Entfernung der Leber bei Hunden ausgebildet, welche frei von den meisten Fehlerquellen ist, die früheren Exstirpationsmethoden des Organs bei Säugetieren anhaften. Es wurde gefunden, dass eine geeignete Einführung von Glukose bei derart operierten Hunden das Leben viele Stunden nach Verlust des gesamten Lebergewebes erhält. Von den vielen an hepatektomierten Tieren gemachten Beobachtungen möchten wir hervorheben, 1. dass die Leber zur Erhaltung des Blutzuckerspiegels absolut wesentlich ist; 2. dass die Leber der wichtigste Faktor, wenn nicht der einzige, bei dem Prozess der Desamidierung und der Harnstoffbildung ist, und 3. dass Bilirubin auch ohne Mitwirkung der Leber gebildet werden kann.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01924578
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  • 6
    Electronic Resource
    Electronic Resource
    Carbaryl inhibition of interferon synthesis in cultured goldfish cells (1985)
    Springer
    Bulletin of environmental contamination and toxicology 34 (1985), S. 109-113 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01609710
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  • 7
    Electronic Resource
    Electronic Resource
    Effects of carbaryl on differentiated and undifferentiated neuroblastoma cells: Inhibition of growth rates and direct cell toxicity (1987)
    Springer
    Bulletin of environmental contamination and toxicology 38 (1987), S. 143-150 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01606572
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  • 8
    Electronic Resource
    Electronic Resource
    Localization of the ornithine aminotransferase gene and related sequences on two human chromosomes (1987)
    Springer
    Human genetics 〈Berlin〉 76 (1987), S. 121-126 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary We have used a full length cDNA clone to determine the chromosomal location ofthegene encoding human ornithine aminotransferase (OAT), a mitochondrial matrix enzyme. Southern blot analysis of ScaI-digested DNA from 34 human-mouse somatic cell hybrids revealed 11 human fragments. Three fragments mapped to chromosome 10q23-10qter, confirming the previous provisional assignment of the functional gene to this autosome by analysis of OAT expression in somatic cell hybrids (O'Donnell et al. 1985). The remaining eight fragments were assigned to the X chromosome, and regionally assigned to Xp21-Xp11 by use of an X-chromosome mapping panel. These X chromosome sequences could represent pseudogenes, or related members of a multigene family. Two of the X chromosome fragments are alternate alleles of a restriction fragment length polymorphism (RFLP) making this OAT-related locus an excellent genetic marker. The RFLP may now be used to determine any possible relationship between this locus and several X-linked eye defects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00284906
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  • 9
    Electronic Resource
    Electronic Resource
    Changes in flood-plain vegetation and land use along the Missouri River from 1826 to 1972 (1977)
    Springer
    Environmental management 1 (1977), S. 343-348 
    Details
    ISSN: 1432-1009
    Keywords: Flood-plain vegetation ; Land use ; Channelization ; Bank-stabilization ; Flood-plain forest succession
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Changes in vegetation and land use since 1826 were evaluated along the 800 kilometer portion of the Missouri River flood-plain that extends across the State of Missouri using County Land Office Survey records for 1826 and aerial photos for 1937, 1958, and 1972. The combined results show a decline in flood-plain forest coverage from 76% in 1826 to 13% in 1972; cultivated land increased from 18% to 83% during the same time. Uncultivated-unforested areas increased from 6% in 1826 to 27% in 1937, then declined to 1% in 1972; these changes occurred coincident with extensive bank-stabilization and channelization activities initiated in 1912 by the U.S. Army Corps of Engineers. Riverbank stabilization activity since that time may account for the increased rate of decline in flood-plain forests from 0.25% per year between 1826 and 1937 to 1.6% per year between 1937 and 1972. The overall species composition of the 1826 flood-plain forests was found to be most similar to mature forest stands evaluated in 1972; similar frequencies in 1826 and 1972 occurred for hackberry (Celtis occidentalis; 80% in 1826, 83% in 1972), elm (Ulmus spp.; 80% and 83%), and sycamore (Platanus occidentalis; 57% and 50%). Pawpaw (Asimina triloba), found only in mature flood-plain forests in 1972, was recorded along 54% of the 1826 section lines. These combined data indicate (1) that pre-settlement flood-plain forests were extensive and included frequent, mature stands, (2) that in certain areas substantial portions of the flood-plain were in cultivation prior to extensive riverbank stabilization and channelization, and (3) that increased flood-plain forest clearing occurred coincident with increased bank-stabilization activities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01865861
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  • 10
    Electronic Resource
    Electronic Resource
    Action spectrum for the effect of day-extensions on flowering and apex elongation in green, light-grown wheat (Triticum aestivum L.) (1989)
    Springer
    Planta 179 (1989), S. 428-432 
    Details
    ISSN: 1432-2048
    Keywords: Action spectrum ; Light-grown plants ; Photoperiodism ; Phytochrome (type I) ; Triticum (photoperiodism)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Fluence-rate response curves for wavelengths from 640 nm to 730 nm were constructed for the day-extension promotion of flowering in green, light-grown, wheat (Triticum aestivum L., cv. Alexandria), a long-day plant. The resultant action spectrum had action maxima at 660 nm and 716 nm and resembles spectra for the high-irradiance reaction (HIR) seen in etiolated plants. Because, the HIR is thought to be controlled by type I pytochrome (that which is most abundant in etiolated tissue) our results indicate the involvement of type I phytochrome in the photomorphogenesis of a light-grown, green plant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00397581
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