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  • 1990-1994  (6)
  • 1970-1974  (2)
  • 1955-1959  (1)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    OR spectrum 12 (1990), S. 180-180 
    ISSN: 1436-6304
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    OR spectrum 13 (1991), S. 169-170 
    ISSN: 1436-6304
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Supportive care in cancer 2 (1994), S. 266-269 
    ISSN: 1433-7339
    Keywords: HSV ; Stomatitis ; Cancer ; Pediatrics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The relationship between herpes simplex virus (HSV) and oral mucositis was investigated in children undergoing antineoplastic chemotherapy. HSV culture was performed in 20 children with stomatitis developing after antineoplastic chemotherapy. Viral isolates were typed and susceptibility to acyclovir was investigated. The virus was isolated from oral lesions in 10 of 20 children with severe oral mucositis. Viral reactivation was the most likely explanation in most cases, since HSV was isolated in 9 of 13 seropositive patients (and in 1 patient with unknown anti-HSV serology), but in no seronegative patient. HSV type 1 was isolated more frequently than HSV type 2 (8 versus 2). Acyclovir showed standard in vitro activity against all isolates. Our results suggest that oral mucositis in children receiving antineoplastic treatment is probably multifactorial in origin and that HSV can be an important cofactor, especially in children who are seropositive for HSV. In our Centre, acyclovir remains active in vitro against this opportunistic pathogen and could be employed in prophylaxis and therapy.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1436-6304
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Photoelectric, photographic, and visual observations of second and third contacts of the total solar eclipses of 12 November, 1966 and 7 March, 1970 are analyzed. The observations indicate a difference in the reference system of Newcomb's Tables of the Sun as compared to the reference system of the Improved Lunar Ephemeris (J = 2) of 0s.911 ± 0s.034 m.e. The correction is to be applied in the sense of reducing the value of ΔT as tabulated in the American Ephemeris when interpolating the position of the Moon.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Environmental geology 21 (1993), S. 77-83 
    ISSN: 1432-0495
    Keywords: Effluent ; Paper plant ; Lake Champlain
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract We used geologic and geochemical techniques to document the change with time of the distribution and concentration of contaminated bottom sediments in southern Lake Champlain near an International Paper Company plant. Our work, initiated in 1972, was expanded on behalf of Vermont citizens in a class-action suit against the International Paper Company. To update our 1972–1973 results, we collected nine cores in 1988 upstream and downstream from the paper plant effluent diffuser. Water content, volatile solids, organic carbon, and three ratios, Al/Si, Cl/Si, and S/Si, in addition to megascopic and microscopic observations, were evaluated to identify and trace the distribution of effluent and to measure the thickness of sediment affected by or containing components of effluent. Analyses were carried out on samples from the cores as well as from effluent collected directly from the plant's waste treatment facility. In 1973, two years after the plant opened, we cored near the diffuser; sediment contaminated with effluent was 4.5 cm thick. In 1988, in the same area, sediment contaminated with effluent was 17 cm thick. In 15 years, water content increased from 72 to 85 percent, volatile solids from 7 to 20 percent, and organic carbon from 2 to 12 percent. Cl/Si and S/Si were high only near the diffuser and were zero elsewhere. In the area of the diffuser, contaminated sediment appears to be accumulating at a rate of about 1 cm/yr. At a control location 22 km upstream (south) from the plant, the top, poorly consoli-dated layer was only 1 cm or less thick both in 1973 and in 1988. The class-action suit was settled in favor of the plaintiffs for $5 million.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of pest science 43 (1970), S. 150-153 
    ISSN: 1612-4766
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé Les essais présentés ici montrent 1. que par la suppression d'une calamité de pucerons dans des céréales, des augmentations de revenus peuvent être réalisées, les pucerons causent donc des dégâts économiques, 2. que l'emploi de Demeton dans ces mesures de lutte présente aucun inconvénient du point de vue hygiénique et qu'aucune infraction aux règles fixées par la «Hö chstmengenverordnung-Pflanzenschutz» n'intervient, 3. que cependant les mesures de lutte, ainsi appliquées en Rhénanie en 1968, n'ont apporté aucun effet économique sensible. Aucune valeur indiquant le seuil de dégâts d'une population de pucerons dans les céréales pouvait être trouvée, car ce seuil ne dépend pas seulement de la densité de population aux différents épis ou panicules mais aussi du pourcentage des épis ou panicules atteints. La ré ponse à ces questions reste pour de futures recherches.
    Abstract: Summary The above presented tests demonstrate 1. that an elimination of the aphid-calamity may lead to a higher productivity of the cereals, whereby the action of aphids can be considered as an economically noxivious one, 2. that the employment in these control-processes of Demeton has no inconvenience as to the hygienic point of view and that there will not be provocated any violation of the regulations as fixed by the “Hö chstmengenverordnung-Pflanzenschutz”, 3. the control-processes, however, as they have been mainly carried out in 1968, considering the periods as well as the equipment, did not bring along any considerable economic effect. There could not, unfortunately, be elaborated any data giving information about the brink of damage caused by aphid-populations in cereals, as it depends not only on the density of the population on one single ear or panicle of corn but also on the percentage of the attacked ears and panicles of corn in general. The answer to these questions will have to be given by future researches.
    Notes: Zusammenfassung Die dargestellten Untersuchungen zeigen, daß 1. durch Beseitigung einer Blattlauskalamität an Getreide Ertragssteigerungen eintreten können, die Blattläuse also im wirtschaftlichen Sinne schädlich wirken, 2. die Verwendung von Demeton bei diesen Bekämpfungsmaßnahmen aus hygienischer Sicht unbedenklich ist und keine Übertretung der in der Höchstmengenverordnung — Pflanzenschutz niedergelegten Bestimmungen eintritt, 3. die Bekämpfungsmaßnahmen jedoch, so wie sie zeitlich und apparativ 1968 im Rheinland überwiegend durchgeführt worden sind, keinen wirtschaftlich vertretbaren Effekt gebracht haben. Es konnten leider keine Werte erarbeitet werden, die Aufschluß über den Schadensschwellenwert einer Blattlauspopulation an Getreide geben könnten, da dieser nicht nur von der Besiedelungsdichte an einzelnen Ähren oder Rispen, sondern auch vom Prozentsatz überhaupt befallener Ähren oder Rispen abhä ngig sein wird. Die Klärung dieser Fragen muß zukünftigen Untersuchungen vorbehalten bleiben.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 94 (1994), S. 49-56 
    ISSN: 1434-6036
    Keywords: 71.38.+i ; 73.20.Dx ; 71.25.Jd
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We study the resonant magnetopolaron effects in parabolic quantum wells in a tilted magnetic field. The renormalization of the first excited level, which is resonant with the ground state level plus one longitudinal-optical phonon is calculated at the resonance using an improved resonance approximation to be ΔE=γαβ where α is the polaron coupling constant. The exponent β and the factor γ are calculated in dependence on the tilt angle of the magnetic field and the confinement energy.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 70 (1958), S. 310-311 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird eine Auswertungsweise beschrieben, durch deren Hilfe man auf eine vollständige Trennung der Substanzen verzichten und den Zeit- und Materialbedarf wesentlich verringern kann.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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