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  • 1
    Electronic Resource
    Electronic Resource
    Victoxinine and Prehelminthosporolactone, Two Minor Phytotoxic Metabolites Produced by Bipolaris sp., a Pathogen of Johnson Grass (1989)
    s.l. : American Chemical Society
    Journal of natural products 52 (1989), S. 899-901 
    Details
    ISSN: 1520-6025
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/np50064a046
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  • 2
    Electronic Resource
    Electronic Resource
    3-Anhydroophiobolin A and 3-Anhydro-6-epi-ophiobolin A, Phytotoxic Metabolites of the Johnson Grass Pathogen Bipolaris sorghicola (1989)
    s.l. : American Chemical Society
    Journal of natural products 52 (1989), S. 1170-1172 
    Details
    ISSN: 1520-6025
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/np50065a046
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Miscibility of dipalmitoylphosphatidylcholine and sulfatides in mono- and bilayers (1992)
    s.l. : American Chemical Society
    Langmuir 8 (1992), S. 1388-1391 
    Details
    ISSN: 1520-5827
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/la00041a024
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  • 4
    Electronic Resource
    Electronic Resource
    Intercalation of Thionine in Colloidal α-Zirconium Phosphate (1994)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 152-153 (Mar. 1994), p. 379-382 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/00/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.152-153.379.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Bromodeoxyuridine labeling study of intracranial meningiomas: proliferative potential and recurrence (1990)
    Springer
    Acta neuropathologica 80 (1990), S. 311-317 
    Details
    ISSN: 1432-0533
    Keywords: Meningioma ; Bromodeoxyuridine ; Cell kinetics ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Ninety-six patients with intracranial meningiomas and two with hemangiopericytic variants received a 30-min intravenous infusion of bromodeoxyuridine (BrdUrd), 200 mg/m2, before tumor removal. Excised tumor specimens were stained by the indirect immunoperoxidase method to determine the BrdUrd labeling index (LI), or percentage of cells in DNA synthesis. The BrdUrd LI was 〈 1% in 63 (86.3%) of 73 nonmalignant meningiomas and 〈 1% in 20 (87%) of 23 malignant meningiomas. Of 23 malignant meningiomas 11 were recurrent tumors; 8 patients had recurrence 3 to 33 months after the study. The recurrence rate was 100% (five of five) in patients whose tumors had a BrdUrd LI 〉 5%, 44% (11 of 25) in those with a BrdUrd LI 1% to 5%, and 6.1% (4 of 66) in those with an LI 〈 1%. Thus, meningiomas with a BrdUrd LI 〉 1% may grow faster and recur more frequently. Among patients with malignant mengngiomas, the mean time to recurrence after the study was 7.5 months in those with a BrdUrd LI 〉 5% and 20.2 months for those with an LI 1% to 5%. The mean time to recurrence was 97.8 months in patients with nonmalignant meningiomas. Both hemangiopericytic variants were recurrent and showed LIs of 0.5% and 4.1%; the former tumor recurred 8 years after complete resection, while the latter recurred three times in 3.5 years. Thus, the proliferative potential of intracranial meningiomas as reflected by the BrdUrd LI appears to be a prognostic variable that can help to elucidate the biological behavior of individual meningiomas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00294650
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  • 6
    Electronic Resource
    Electronic Resource
    Influence of food quantity and temperature on development and growth of the marine copepod Calanus chilensis from northern Chile (1997)
    Springer
    Marine biology 128 (1997), S. 281-288 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract An experiment under laboratory conditions was conducted to test the hypothesis that development and growth of copepodite stages in Calanus chilensis are temperature-dependent and not subject to food shortage in the upwelling area of the Humboldt Current, northern Chile. Field data obtained from June 1994 to May 1995 in Bahía Mejillones (23°S) were used to define four combinations of temperature and food under which copepodites were reared from Stage CIII to adulthood. The high temperature was 18.1 °C and the low temperature 13.1 °C, whereas the high food level was in the range of 6.8 to 24.8 μg l−1 chlorophyll a and the low level 1.0 to 6.8 μg l−1 chlorophyll a. As food a mixture of three unknown species of phytoflagellates and the diatom Navicula cryptocephala was used. This phytoplankton was initially obtained from the same sampling sites as copepods and kept in f/2 media at stable levels and composition throughout the experiment. The development rate (1/t), estimated from the time (t) elapsing between Stage CIV and adult, was significantly affected by both temperature and food, although low-food effects were much more remarkable. Low-food conditions also significantly reduced body length and “structural” (lipid-discounted) body mass at adulthood, while temperature only affected body length. The weight-specific growth rate was also affected by food and temperature, but again food effects were much more drastic. The results indicate that C. chilensis is a highly sensitive species to lack of food, and is possibly subject to food shortage during its annual cycle in the coastal upwelling area of northern Chile. Food limitation may help explain the seasonal pattern of adult size reported by previous studies in the area and the lack of consistence between the number of generations predictable from a temperature-dependent model and that observed in the field during the annual cycle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270050093
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  • 7
    Electronic Resource
    Electronic Resource
    A new simple method to perform pressure-volume curves obtained under quasi-static conditions during mechanical ventilation (1999)
    Springer
    Intensive care medicine 25 (1999), S. 173-179 
    Details
    ISSN: 1432-1238
    Keywords: Key words Pressure-volume curves ; Low flow inflation technique ; Pulmonary mechanics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: To describe a fast, simple method to acquire pressure-volume curves of the respiratory system and to compare this with a classic method in terms of reliability of the data and speed. Design: Acquisition of pressure-volume curves by low flow inflation technique (P-Vlf) versus the occlusion technique (P-Vst) using the standard equipment of a Cesar ventilator. Setting: General ICU – Aix en Provence Hospital. Patients: Ten sedated, curarized patients undergoing mechanical ventilation. Interventions: P-Vlf curves were acquired by setting the ventilator parameters at f = 5 c./min, duty time Ti/Ttot = 80 %, VT = 1100 ml, pause time = 0. The pressure and volume data were collected directly on the ventilator screen. P-Vst curves were acquired using an airway occlusion technique. The pressures obtained for the same inflation volumes and times necessary for performance of the two techniques were compared. Results: The time needed to acquire a P-Vlf curve was 3 min versus 38 min for P-Vst curve. Concordance analysis between the two methods showed a 95 % confidence interval of (–0.5 cm H2O, + 1.8 cm H2O) for pressure. Conclusions: P-Vlf curves are close to P-Vst curves, are much less time-consuming, easy to acquire with Cesar ventilator equipment, and may be used in clinical routine to assess the elastic properties of the respiratory system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001340050812
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  • 8
    Electronic Resource
    Electronic Resource
    Cloning and sequence analysis of the invertase gene INV 1 from the yeast Pichia anomala (1996)
    Springer
    Current genetics 29 (1996), S. 234-240 
    Details
    ISSN: 1432-0983
    Keywords: Key wordsPichia anomala ; Invertase ; Cloning ; Sequence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  A genomic library from the yeast Pichia anomala has been constructed and employed to clone the gene encoding the sucrose-hydrolysing enzyme invertase by complementation of a sucrose non-fermenting mutant of Saccharomyces cerevisiae. The cloned gene, INV1, was sequenced and found to encode a polypeptide of 550 amino acids which contained a 22 amino-acid signal sequence and ten potential glycosylation sites. The amino-acid sequence shows significant identity with other yeast invertases and also with Kluyveromyces marxianus inulinase, a yeast β-fructofuranosidase which has a different substrate specificity. The nucleotide sequences of the 5′ and 3′ non-coding regions were found to contain several consensus motifs probably involved in the initiation and termination of gene transcription.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002940050041
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  • 9
    Electronic Resource
    Electronic Resource
    Isolation and characterization of mutants as an approach to a transformation system in Kluyveromyces marxianus (1996)
    Springer
    Current genetics 30 (1996), S. 89-92 
    Details
    ISSN: 1432-0983
    Keywords: Keywords Kluyveromyces marxianus ; Yeast ; HIS3 ; Mutants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  A method to obtain K. marxianus mutants has been developed. Different auxotrophic mutants were isolated by nystatin and snail-enzyme enrichment procedures using an incubation time of 2 h before adding the antibiotic or the enzyme respectively. All his mutants analyzed by complementation tests turned out to belong to the same complementation group. Some of them were transformed and complemented by the S. cerevisiae HIS3 gene. These non-reverting his3 mutants contain no heterologous sequence, which is essential to make them acceptable for application in the food industry.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002940050105
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  • 10
    Electronic Resource
    Electronic Resource
    Electrical conductivity of very anisotropic systems, coherencevs. diffusion (1983)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 1376-1382 
    Details
    ISSN: 0392-6737
    Keywords: Theory of electronic transport ; scattering mechanisms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto La conduttività elettrica dei composti pseudounidimensionali è calcolata usando due modelli e i valori ottenuti sono confrontati. Si mostra che in entrambi i casi (coerente e diffusivo) il rapporto tra conduttività perpendicolare e parallela cresce col quadrato del fattore anisotropia.
    Abstract: Резюме Используя дбе модели, вычисляется электрическая проводимосты пвевдо-одномерных соединений. Ролученные результаты сравниваются между собой. Показывается, что в обоих случаях (когерентном и диффузном) отношение между перпендикулярной и параллельной проводимостями растет как квадрат фактора анизотропии.
    Notes: Summary The electrical conductivity of pseudo-one-dimensional compounds is calculated by using two models and the resulting values are compared. It is shown that in both cases (coherent and diffusive) the ratio between the perpendicular and the parallel conductivity grows as the square of the anisotropy factor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02460220
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