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  • Wiley  (8)
  • Springer  (6)
  • Nature Publishing Group  (4)
  • American Society of Hematology  (2)
  • Heidelberg: Springer
  • 2000-2004  (16)
  • 1975-1979  (4)
  • 1
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    Motion of dinoflagellates in a simple shear flow (2000)
    Wiley
    Details
    Publication Date: 2000-11-01
    Print ISSN: 0024-3590
    Electronic ISSN: 1939-5590
    Topics: Biology , Geosciences , Physics
    Published by Wiley on behalf of Association for the Sciences of Limnology and Oceanography.
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  • 2
    Electronic Resource
    Electronic Resource
    Abelson virus-transformed haematopoietic cell lines with pre-B-cell characteristics (1979)
    [s.l.] : Nature Publishing Group
    Nature 278 (1979), S. 551-553 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The ABC-1 cells are large, vacuolated, undifferentiated blast cells. Immunofluorescence and cytotoxicity tests indicated that no cells had cell surface immunoglobulin (Smlg) or expressed detectable levels of Thy-1.2, suggesting that there were no mature B or T lymphocytes present. Additional ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/278551a0
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  • 3
    Electronic Resource
    Electronic Resource
    Association of dwarfism and floral induction with a grape ‘green revolution’ mutation (2002)
    [s.l.] : Nature Publishing Group
    Nature 416 (2002), S. 847-850 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The transition from vegetative to reproductive growth is an essential process in the life cycle of plants. Plant floral induction pathways respond to both environmental and endogenous cues and much has been learnt about these genetic pathways by studying mutants of Arabidopsis. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/416847a
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  • 4
    Electronic Resource
    Electronic Resource
    Extrasolar planets Giant giants or dwarf dwarfs? (2001)
    [s.l.] : Nature Publishing Group
    Nature 409 (2001), S. 462-463 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Planet hunters keep discovering yet more weird objects around nearby Sun-like stars that resemble nothing found in our own Solar System. The latest discoveries, announced at a meeting earlier this month*, include a three-body system that appears to be composed of a central star orbited by ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35054155
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  • 5
    Electronic Resource
    Electronic Resource
    On the role of solvent in complexation equilibiria. II. The acid-base chemistry of some sulfhydryl and ammonium-containing amino acids in water—acetonitrile mixed solvents (1979)
    Springer
    Journal of solution chemistry 8 (1979), S. 635-646 
    Details
    ISSN: 1572-8927
    Keywords: Amino acids ; cysteine ; penicillamine ; glutathione ; microscopic ionization ; mixed solvents ; water-acetonitrile ; potentiometry ; ultraviolet spectroscopy ; acid-base chemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The macroscopic and microscopic acid-base chemistry of a series of sulfhydryl and ammonium-containing amino acids HS−R−NH3 [R=−CH2CH(COOH)−, cysteine (CYS); R=−C(CH3)2CH(COOH)−, penicillamine (PEN); R=−CH(COOH)CH2CH2CONHCH(−CH2)CONHCH2COOH, glutathione (GSH)] was characterized in water and its binary mixtures with acetonitrile (16.3, 34.2, and 53.9 mass % acetonitrile). Macroscopic acid dissociation constants were obtained by potentiometric titration using the glass-calomel electrode pair. Microscopic acid dissociation constants were calculated from ultraviolet absorption measurements at ca. 232 nm where the deprotonated sulfhydryl group absorbs. The macroscopic constants decrease uniformly as the solvent becomes enriched in acetonitrile. The microscopic constants, which characterize the relative concentrations of the two monoprotonated tautomers of the molecules (I and II) reveal that as the solvent becomes enriched in acetonitrile, the fraction of molecules existing as highly charged tautomer I decreases for CYS (0.68–0.40), PEN (0.85–0.34), and GSH (0.61–0.30). These results are related to the decreasing concentration of water as the solvent becomes enriched in acetonitrile.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01033694
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  • 6
    Electronic Resource
    Electronic Resource
    Alpha-fetoprotein and liver cell proliferation in rats fed choline-deficient diet (1976)
    Springer
    European journal of nutrition 15 (1976), S. 211-216 
    Details
    ISSN: 1436-6215
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Description / Table of Contents: Zusammenfassung Der3H-Thymidin-Aufnahmeindex in der Leber und das Serum AFP wurden bei Ratten, welche bei einer standardisierten Laboratoriumsdiät oder mit einer Cholinmangeldiät ernährt wurden, bestimmt. Es wurde festgestellt, daß die Proliferation der Leberzellen bei Tieren, die die Mangeldiät erhalten haben, signifikant erhöht war. Weiterhin wurde bei einigen dieser Ratten eine erhöhte Serumkonzentration des AFP gefunden. Die Befunde deuten darauf hin, daß die vermehrte Synthese des AFP einer Leberzellregeneration, welche sekundär zu einem Leberschaden entsteht, entspricht.
    Notes: Summary Liver3H-thymidine labelling index and serum AFP were determined in rats fed a standard laboratory or choline deficient diet. A significant increase in the rate of liver cell proliferation was evidenced in animals on the deficient diet. Furthermore, elevated serum AFP levels were detected in a proportion of these rats. It is suggested that increased synthesis of AFP corresponds to liver cell regeneration secondary to hepatic damage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02018443
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  • 7
    Electronic Resource
    Electronic Resource
    Triggering Protostellar Collapse, Injection, and Disk Formation (2000)
    Springer
    Space science reviews 92 (2000), S. 13-22 
    Details
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Certain meteoritical inclusions contain evidence for the existence of short-lived radioactivities such as 26Al and 41Ca at the time of their formation 4.566 billion years ago. Because the half-lives of these nuclides are so short, this evidence requires that no more than about a million years elapsed between their nucleosynthesis and their inclusion in cm-sized solids in the solar nebula. This abbreviated time span can be explained if these nuclides were synthesized in a stellar source such as a supernova, and were then transported across the interstellar medium by the resulting shock wave, which then triggered the gravitational collapse of the presolar molecular cloud core. Detailed 2D and 3D numerical hydrodynamical models are reviewed and show that such a scenario is consistent with the time scale constraint, and with the need to both trigger collapse and to inject shock-wave matter into the collapsing protostellar cloud and onto the protoplanetary disk formed by the collapse.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005237031828
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  • 8
    Electronic Resource
    Electronic Resource
    Early Solar System Shock fronts in Hawaii (2004)
    [s.l.] : Nature Publishing Group
    Nature 432 (2004), S. 957-958 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The meteorites and comets that were formed in the solar nebula, the planet-forming disk of gas and dust that became our Solar System, have been largely unaltered over time, and their structure provides clues about the physical and chemical processes that occurred in the nebula. One group of early ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/432957a
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  • 9
    Electronic Resource
    Electronic Resource
    Adventures in Data Analysis: The TAO Array and the 1997–1998 El Niño (2000)
    Springer
    Mathematical geology 32 (2000), S. 159-185 
    Details
    ISSN: 1573-8868
    Keywords: El Niño—Southern Oscillation ; real time ; data analysis ; time series ; animation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Mathematics
    Notes: Abstract Traditional undergraduate education in earth sciences does not emphasize data acquisition, analysis, or assessment. However, arrival of the information age dictates that earth sciences graduates be imbued with fundamental skills to organize, evaluate and process large data sets. Fortunately, the proliferation of remotely sensed data and its availability via the Internet provides many opportunities for earth science educators to meet these needs. Exercises to introduce students to data analysis have been designed utilizing data from the Tropical Atmosphere–Ocean (TAO) Array and the 1997–1998 El Niño episode in the tropical Pacific Ocean. The TAO Array is a grid of 69 buoys moored across the equatorial Pacific Ocean (8°N to 8°S and 95°W to 143°E) recording environmental data relevant to El Niño—Southern Oscillation (ENSO) processes. Data from the TAO Array is available in near-real-time (http://www.pmel.noaa.gov/toga-tao/realtime.html) or as archived ASCII files (http://www.pmel.noaa.gov/toga-tao/data-delivery.html) providing daily (sometimes hourly) records of environmental parameters for each buoy in the grid. Student exercises in data analysis begin with downloading data from buoy locations, parsing the data into spreadsheets, and organizing data by environmental parameter into yearly and monthly data sets. Analyses of reconstructed data include calculations of long-term averages of environmental parameters, seasonal climatologies, monthly climatologies and calculation of long-term, seasonal, and monthly anomalies. Finally, monthly anomaly maps produced by students are loaded sequentially into GIF-animation software to create time-series images illustrating the progress and development of the 1997–1998 El Niño event.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007523322222
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  • 10
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    Sensor fusion by neural networks using spatially represented information (2001)
    Springer
    Details
    Publication Date: 2001-11-01
    Print ISSN: 0340-1200
    Electronic ISSN: 1432-0770
    Topics: Biology , Computer Science , Physics
    Published by Springer
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