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  • 2015-2019  (1)
  • 1990-1994  (11)
  • 1955-1959  (1)
  • 1
    Electronic Resource
    Electronic Resource
    High-pressure NMR probes for the in situ investigation of gas/liquid reactions (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 3307-3310 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Three different types of nuclear magnetic resonance (NMR) probes have been developed for investigating multiple phase (gas/liquid) reactions in situ at ambient and high pressure. Versions requiring only minimal modifications of existing NMR probes, low volume probes, and high precision flow systems have been optimized for specific boundary conditions. Pressures ranging from 1 to 20 bar have been successfully applied. The arrangements are especially attractive for the in situ investigations of homogeneous hydrogenation reactions displaying nuclear spin polarization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142543
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  • 2
    Electronic Resource
    Electronic Resource
    Optical determination of carrier density in pseudomorphic AlGaAs/InGaAs/GaAs hetero-field-effect transistor structures by photoluminescence (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 2739-2741 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A photoluminescence (PL) analysis of a highly degenerate two-dimensional electron gas (2DEG) in pseudomorphic modulation-doped AlGaAs/InGaAs/GaAs transistor structures is reported. The PL response from samples with one or two populated electron subbands is dominated by one or two spectral bands, respectively, with a high-energy intensity cutoff. The spectral width varies linearly with the measured 2DEG sheet density ns or with a Schottky barrier depletion voltage, which directly reflects the two-dimensional density of states (2DDOS) below the Fermi level. We used the effective electron mass from cyclotron resonance experiments to evaluate the 2DDOS and can thus directly determine ns from the spectral width via the 2DDOS. Independent ns values were obtained from Shubnikov–de Haas measurements and agree excellently with ns values from PL.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.105904
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    Paper (German National Licenses)
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  • 3
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    Unknown
    Wählergenerationen in Preussen. Zwischen Kaiserreich und Republik (1991)
    Harlow, etc. : Periodicals Archive Online (PAO)
    English Historical Review. 106:418 (1991:Jan.) 249 
    Details
    ISSN: 0013-8266
    Topics: History
    Notes: SHORTER NOTICES
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:0027-1991-106-18-000155
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  • 4
    Electronic Resource
    Electronic Resource
    Isolated and combined deficiencies of NADH dehydrogenase (complex I) in muscle tissue of children with mitochondrial myopathies (1990)
    Springer
    European journal of pediatrics 150 (1990), S. 104-108 
    Details
    ISSN: 1432-1076
    Keywords: Reduced nicotinamide adenine dinucleotide (NADH) dehydrogenase ; Respiratory chain ; Mitochondrial myopathies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We describe eight children with complex I deficiency, four of them with an isolated, the other four with an additional deficiency of complex IV. Clinical, chemical and morphological findings were compared from patients with isolated and combined deficiency. In both groups, the age of onset of symptoms was between the 1st day and the 4th month of life. Clinical and biochemical heterogeneity were observed. We found no correlation between residual activity of complex I in muscle, blood lactate level, and severity of clinical symptoms. Newborns presenting with severe lactic acidosis and children with later onset myopathy were seen in both groups. The group with combined complex I deficiency showed a more severe clinical course. By light microscopy ragged red fibres were only found in two patients with combined deficiency. However, by electron microscopy structural alterations of the mitochondria were observed in six out of seven muscle specimens.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02072049
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  • 5
    Electronic Resource
    Electronic Resource
    Antagonismusin vitro vonBacillus spp. gegenüberRhizoctonia solani undPythium spp. (1993)
    Springer
    Journal of pest science 66 (1993), S. 121-125 
    Details
    ISSN: 1612-4766
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Zusammenfassung Es konnten 132Bacillus-Stämme isoliert und gegenüber7 Rhizoctonia-solani- und 6Pythium-Stämmen auf Antagonismusin vitro untersucht werden. Die gefundenen Antagonisten hemmten die Pilzisolate unterschiedlich stark, so daß Gemische von Antagonisten für die Praxis zu empfehlen sind.
    Notes: Abstract There were 132Bacillus-strains isolated and tested for antagonism against 7 strains ofRhizoctonia solani and 6 strains ofPythium spp. The isolated antagonists didn't show a uniform effect against the tested strains ofRhizoctonia solani andPythium spp. For an application in practice it will be better to use a mixture of antagonists.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01906840
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  • 6
    Electronic Resource
    Electronic Resource
    Isolation und Pathogenität vonRhizoctonia solani Kühn an Gurken und Buschbohnen (1994)
    Springer
    Journal of pest science 67 (1994), S. 34-39 
    Details
    ISSN: 1612-4766
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Zusammenfassung Es wurden 79Rhizoctonia solani-Isolate von verschiedenen Orten in Baden-Württemberg isoliert. Es konnten Isolate gefunden werden, die gegenüber Gurken und Bohnen pathogen waren. Bei Bohnen kann das Sproßgewicht als leicht zu erfassender Parameter für die Quantifizierung der Schadwirkung benutzt werden. Eine trockene Lagerung von mitRhizoctonia solani durchwachsenen Haferkörnern erwies sich als besonders geeignet für eine Stammkulturhaltung.
    Notes: Abstract 79Rhizoctonia solani strains were isolated from different locations in Baden-Württemberg. Some of these strains were pathogenic against cucumber and bean. The sprout-weight of bean can be used as an easy-to-measure parameter for quantification of the damage caused by teh fungus. The dry storage of oat seeds, previously inoculated withRhizoctonia solani, has been shown to be the best method for long-term storage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01907348
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  • 7
    Electronic Resource
    Electronic Resource
    Growth-promoting-Effekt von einigen fluoreszierendenPseudomonas-Isolaten auf Gurken (Cucumis sativus) (1994)
    Springer
    Journal of pest science 67 (1994), S. 101-103 
    Details
    ISSN: 1612-4766
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Zusammenfassung 209 Isolate von fluoreszierenden Pseudomonaden, die sich als Antagonistenin vitro gegenüberRhizoctonia solani undPythium aphanidermatum erwiesen haben, wurden hinsichtlich ihrer Wachstumsbeeinflussung bei Gurken untersucht. Von diesen Isolaten hatten 155 einen positiven Einfluß auf das Sproßgewicht. SiebenPseudomonas-Isolate reduzierten das Sproßgewicht zwischen 20 und 50%, 11 Isolate verursachten eine Sproßgewichtszunahme von 30 bis 50%, verglichen mit der unbehandelten Kontrolle.
    Notes: Abstract 209 isolates of fluorescent pseudomonas, which showed antagonismin vitro againstRhizoctonia solani andPythium aphanidermatum, were investigated for their ability to influence the growth of cucumber. Among them 155 isolates showed a positive effect on the sproutweight of cucumber. Even 7Pseudonomas-isolates reduced the sproutweight between 20 and 50%. Eleven isolates caused an increase of 30 to 50% of the sproutweight as compared with the untreated control.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01904699
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  • 8
    Electronic Resource
    Electronic Resource
    Antagonismusin vivo vonBacillus spp. gegenüberRhizoctonia solani undPythium spp. (1994)
    Springer
    Journal of pest science 67 (1994), S. 1-5 
    Details
    ISSN: 1612-4766
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Zusammenfassung Es konntenBacillus-Isolate gefunden werden, die sich in Keimungsversuchen an Samen als antagonistisch gegenüberPythium aphanidermatum undRhizoctonia solani erwiesen. Die Versuche wurden mit Bohnen- und Gurkensamen durchgeführt. Die wirksamsten Antagonisten konnten in infizierter Erde Auflaufraten bei Gurken von 40–60% erzielen. Die Wirksamkeit der Antagonisten an Bohnen war niedriger, hier lagen die Keimraten kaum höher als 30%. Offenbar hängt die Wirksamkeit derBacillus-Antagonisten von der Fähigkeit ab Antibiotika zu produzieren und in Konkurrenz zu anderen Mikroorganismen zu treten.
    Notes: Abstract In seed germination tests some isolates ofBacillus spp. showed antagonistic effects againstPythium aphanidermatum andRhizoctonia solani. In thoroughly infected soil, cucumber seeds reached a 40–60% rate of germination in the presence of the best antagonists. Protection to bean seeds was less effective; the germination rate was hardly better than 30%. The efficiency of antagonism reached by several isolates ofBacillus spp. appears to depend on their capacity to compete with other microorganisms or to produce antibiotic substances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01906560
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  • 9
    Electronic Resource
    Electronic Resource
    Überleben einerXanthomonas campestris pv.pelargonii-Mutante in einjähriger Komposterde (1994)
    Springer
    Journal of pest science 67 (1994), S. 69-71 
    Details
    ISSN: 1612-4766
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Zusammenfassung Das Überleben vonXanthomonas campestris pv.pelargonii wurde anhand einer Mutante in einjährigem Kompost untersucht. In der Versuchsvariante 1, bei der die Bakterien mit Komposterde vermischt wurden, konnte die Mutante Xc3b nach 15 Monaten nicht mehr nachgewiesen werden. Unter diesen Bedingungen war es den Bakterien möglich, 14 Monate im Kompost zu überleben. In der Versuchsvariante 2, bei der Komposterde mit Bakterien und zusätzlich noch mit infizierten Pelargonienstielen eingebracht wurden, konnten dieXanthomonas-Mutanten noch nach 26 Monaten nachgewiesen werden.
    Notes: Abstract Survival of phytopathogenicXanthomonas campestris pv.perlargonii in a one year old compost was investigated by use of a mutant. In the variant 1, in which the compost soil was mixed with the bacteria, the mutant Xc-3b could not be detected after 15 months. Under these conditions the bacteria were able to survive for 14 months in the compost. In the variant 2, in which the compost soil was mixed with bacteria andXanthomonas-infected geranium stems, it could be found even after 26 months.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02020363
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  • 10
    Electronic Resource
    Electronic Resource
    Chlor-Aufnahme durch Wasser bei Berührung mit Polyvinylchlorid (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 71 (1959), S. 775-775 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19590712404
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