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  • 1
    Electronic Resource
    Electronic Resource
    Steroide (1964)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 201 (1964), S. 77-79 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01175550
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  • 2
    Electronic Resource
    Electronic Resource
    DNA variation in tissue-culture-derived rice plants (1990)
    Springer
    Theoretical and applied genetics 80 (1990), S. 673-679 
    Details
    ISSN: 1432-2242
    Keywords: Rice ; Tissue culture ; Somaclonal variation ; RFLP ; Methylation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Regenerants of rice were examined by RFLP analysis to determine the occurrence and extent of somaclonal variation. DNA polymorphisms were observed both among plants regenerated from different callus cultures as well as among sibling plants derived from a single callus. Regardless of the basal medium, a higher degree of genetic instability was found among plants regenerated from callus cultures maintained for longer incubation periods (67 days) than among those from shorter incubation periods (28 days). Detailed analysis showed that in several regenerants, there was a close correlation among those plants exhibiting DNA rearrangements and those with apparent methylation changes. Such alterations were observed with both structural and housekeeping genes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00224228
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  • 3
    Electronic Resource
    Electronic Resource
    Primary and secondary bifurcation in baroclinic instability (1994)
    Springer
    Mineralium deposita 29 (1994), S. 286-290 
    Details
    ISSN: 1432-1866
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract In modelling atmospheric flows the baroclinic instability of the flow in a differentially heated rotating annulus plays a central role. This paper deals with an experimental study using LDV and flow visualization techniques. Usually the temperature difference,ΔT, was kept fixed while the angular velocity,ω, was varied. On crossing the stability boundary, the primary bifurcation, the basic flow gives way to a baroclinic wave flow. For a given annulus geometry the wave number,m, of the first wave pattern was found to be uniquely defined byΔT. The measured critical values ofω,ω crit, agree reasonably well with those obtained by other authors. On increasingω aboveω crit the wave number changed, this process showing hysteresis. The situation might indicate secondary bifurcation phenomena. Flow visualization using aluminium particles shows surface flow details.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01816692
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  • 4
    Electronic Resource
    Electronic Resource
    Beobachtungen über die Stoffproduktion der Maispflanze (1961)
    Springer
    Theoretical and applied genetics 31 (1961), S. 303-310 
    Details
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Zusammenfassung 1. Maispflanzen mit bestäubten und nicht bestäubten Kolben werden hinsichtlich Trockensubstanzgehalt und-ertrag, Zuckergehalt und-ertrag, Rohund Reinproteingehalt und-ertrag sowie qualitativem Vorhandensein von freien Aminosäuren verglichen. 2. Der Trockensubstanzertrag des „Restmaises” nicht bestäubter Pflanzen liegt um 29% höher als der bestäubter. Die Blätter und Stengel haben einen höheren Trockensubstanzgehalt. 3. Die nicht bestäubten Gesamtpflanzen brachten nur 68% des Trockensubstanzertrages von bestäubten, weil der anteilmäßig sehr ins Gewicht fallende Kolben praktisch fehlt. 4. Der Disaccharidgehalt und-ertrag nicht bestäubter Pflanzen (sowohl von Blättern, Stengeln, Spindeln und Lieschblättern einzeln als auch von den Gesamtpflanzen) ist in den von uns untersuchten Entwicklungsstadien einiger Maiszüchtungen höher als der bestäubter. 5. Der durchschnittliche Rohproteingehalt des „Restmaises” ist um etwa 1% dem bestäubter Pflanzen überlegen. Der Rohproteinertrag der Gesamtpflanzen beträgt 77% von dem bestäubter; der Reinproteinertrag 57%. Als Grund dafür wird auch hier das Fehlen des stoffreichen Kolbens angesehen. 6. Die Boniturwerte der freien Aminosäuren liegen bei den einzelnen Organteilen nicht bestäubter Pflanzen im Durchschnitt höher. 7. Arginin, Asparaginsäure und Alanin sind bei den nicht bestäubten Pflanzen gesteigert, Serin hingegen vermindert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00709700
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  • 5
    Electronic Resource
    Electronic Resource
    Zur Umsetzung von o-Phenylendiamin mit Piperidondicarbonsäureestern (1963)
    Springer
    Naturwissenschaften 50 (1963), S. 663-664 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00632093
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  • 6
    Electronic Resource
    Electronic Resource
    Buchbesprechungen (1964)
    Springer
    Naturwissenschaften 51 (1964), S. 544-544 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00601464
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  • 7
    Electronic Resource
    Electronic Resource
    Organochlorine pesticides, octachlorostyrene, and mercury in the blood of Elb River residents, Germany (1992)
    Springer
    Archives of environmental contamination and toxicology 22 (1992), S. 14-20 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract Blood samples of 135 residents living near the estuary of the Elb River (Schleswig-Holstein, Germany) were analyzed for organochlorines (e.g., beta-hexachlorocyclohexane (HCH) (〈0.5–22.9 ng/ml), benzene hexachloride (HCB) (0.8–55.2 ng/ml), DDE (〈0.5–29.2 ng/ml) and for mercury (Hg, n=44) (1.1–79.2 ng/ml). It was the first time that octachlorostyrene (OCS) (n.d.–9.2 ng/ml) could be detected in Germans. The pollutants were determined by means of capillary gas chromatography and atomic absorption spectroscopy, respectively. Covariance analysis and log-linear models revealed correlation between increasing age and blood concentrations of HCB, beta-HCH, DDE and OCS, between relative body weight and HCB or DDE, between locality and all pollutants analyzed, and, finally, between fish consumption and OCS and Hg. Regarding the influence of locality on the body burden of pollutants it may be assumed that additional routes of uptake, e.g., via drinking water or air, might be important.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00213296
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  • 8
    Electronic Resource
    Electronic Resource
    Caseicin 80: purification and characterization of a new bacteriocin from Lactobacillus casei (1990)
    Springer
    Archives of microbiology 154 (1990), S. 249-252 
    Details
    ISSN: 1432-072X
    Keywords: Lactic acid bacteria ; Lactobacillus casei ; Bacteriocin ; Extra- and intracellular polypeptides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract When grown in complex or synthetic media, Lactobacillus casei B 80 synthesizes a mitomycin C-inducible polypeptide with very specific bactericidal activity against the sensitive strain Lactobacillus casei B 109. The amount of secreted bacteriocin in the culture solution was low, about 1 mg/l. The bacteriocin which we called caseicin 80, was also detectable in cell extracts, although only 2% of the total activity was retained intracellularly. Caseicin 80 was concentrated by ultrafiltration and purified by cation exchange chromatography with Cellulose SE-23 and Superose. The molecular weight was in the range of M r=40,000–42,000 and the isoelectric point was pH 4.5.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00248963
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  • 9
    Electronic Resource
    Electronic Resource
    Primary and secondary bifurcation in baroclinic instability (1990)
    Springer
    Experiments in fluids 8 (1990), S. 286-290 
    Details
    ISSN: 1432-1114
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract In modelling atmospheric flows the baroclinic instability of the flow in a differentially heated rotating annulus plays a central role. This paper deals with an experimental study using LDV and flow visualization techniques. Usually the temperature difference, ΔT, was kept fixed while the angular velocity, ω, was varied. On crossing the stability boundary, the primary bifurcation, the basic flow gives way to a baroclinic wave flow. For a given annulus geometry the wave number, m, of the first wave pattern was found to be uniquely defined by ΔT. The measured critical values of ω, ω crit, agree reasonably well with those obtained by other authors. On increasing ω above ω crit the wave number changed, this process showing hysteresis. The situation might indicate secondary bifurcation phenomena. Flow visualization using aluminium particles shows surface flow details.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00187231
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  • 10
    Electronic Resource
    Electronic Resource
    Excitations in208Pb nearE x=5683 keV (1994)
    Springer
    The European physical journal 350 (1994), S. 11-12 
    Details
    ISSN: 1434-601X
    Keywords: 21.60.Ev ; 24.10.Eq ; 25.40.Ep ; 25.55.Ci
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A search for the recently proposed two-phonon octupole vibrational (2-POV) 4+ or 6+ state in208Pb at an excitation energy of 5683 keV has been performed using the207Pb(d,p),208Pb (p,p′) and (α,α′) reactions at high energy resolution. No evidence for a two-phonon excitation at this energy is found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01285046
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