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  • 1
    Digitale Medien
    Digitale Medien
    Berlin, Germany : Blackwell Verlag GmbH
    Plant breeding 124 (2005), S. 0 
    ISSN: 1439-0523
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: To identify markers for the everbearing gene in strawberries, 199 F1 progeny plants were produced from a cross between ‘Ever Berry’ (a Japanese everbearing strawberry) and ‘Toyonoka’ (a Japanese Junebearing strawberry) as the experimental population. The results of flowering tests produced 97 everbears and 102 Junebears. The chi-square test gave a goodness of fit for the expected ratio of 1 : 1 for everbears to Junebears, suggesting the inheritance of the everbearing trait is controlled by a monogenic dominant gene. RAPD analyses on this trait were carried out using ‘Ever Berry’ and ‘Toyonoka’. Seventy-one primers, which produced 89 polymorphic fragments between the two parents, were identified from a total of 175 primers. Five markers relating to the everbearing trait were selected from 26 of the 199 progeny plants. The remaining 173 seedlings were analysed with these five markers and a linkage map was constructed using all of the 199 F1 progeny plants. The length of this linkage group is 39.7 cM. The closest markers found, OPE07-1 and OPB05-1, are respectively mapped at 11.8 and 15.8 cM on each side of the everbearing gene.
    Materialart: Digitale Medien
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  • 2
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 289 (1981), S. 572-574 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Figure 1 shows the open-circuit dissolution of the oxalic acid film in 1M sulphuric acid. The electron micrographs show that the pore widening occurs uniformly throughout the film5. Thus, it seems possible to determine the distribution of incorporated impurities across the pore walls by varying the ...
    Materialart: Digitale Medien
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  • 3
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The effect of quantum statistics in quantum gases and liquids results in observable collective properties among many-particle systems. One prime example is Bose–Einstein condensation, whose onset in a quantum liquid leads to phenomena such as superfluidity and superconductivity. A ...
    Materialart: Digitale Medien
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  • 4
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 350 (1980), S. 0 
    ISSN: 1749-6632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Allgemeine Naturwissenschaft
    Materialart: Digitale Medien
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  • 5
    Digitale Medien
    Digitale Medien
    Springer
    Neurosurgical review 7 (1984), S. 233-252 
    ISSN: 1437-2320
    Schlagwort(e): Clinical application ; imaging techniques ; methodology ; positron emission tomography ; radiochemistry
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary One of the most exciting new techniques introduced in the last ten years is positron emission tomography (PET). PET provides quantitative, three-dimensional images for the study of specific biochemical and physiological processes in the human body. This approach is analogous to quantitativein vivo autoradiography but has the added advantage of permitting non-invasivein vivo studies. PET scanning requires a small cyclotron to produce short-lived positron emitting isotopes such as oxygen-15, carbon-11, nitrogen-13 and fluorine-18. Proper radiochemical facilities and advanced computer equipment are also needed. Most important, PET requires a multidisciplinary scientific team of physicists, radiochemists, mathematicians, biochemists and physicians. This review analyses the most recent trends in imaging technology, radiochemistry, methodology, and clinical applications of positron emission tomography.
    Materialart: Digitale Medien
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  • 6
    Digitale Medien
    Digitale Medien
    Springer
    International journal of legal medicine 90 (1983), S. 1-6 
    ISSN: 1437-1596
    Schlagwort(e): Drowning, lung water content ; Relative lung weight, drowning ; Ertrinken, Wassergehalt der Lunge ; Relatives Lungengewicht, Ertrinken
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin , Rechtswissenschaft
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Drei Arten von Ertrinkungsflüssigkeiten (Süßwasser, isotonische Kochsalzlösung und hypertonische Kochsalzlösung) wurden angewandt. Nachdem eine Ratte in einen Exsikkator von 17 cm Länge und 14 cm Breite gebracht wurde, wurde das Gefäß mit Flüssigkeit gefüllt. Die Zeitdauer bis zum Todeseintritt von durchschnittlich 2,5 min differierte nicht stark zwischen den drei Gruppen. Die zwei „Kochsalzgruppen” zeigten höhere Werte als die „Wassergruppe”, sowohl was den Wassergehalt der Lunge als auch das Verhältnis Lungengewicht/Körpergewicht (relatives Lungengewicht) betrifft, aber es gab keine signifikante Differenz zwischen beiden „Kochsalzgruppen”. Die Häufigkeit, mit der Schaum aus den Nasenlöchern abfloß, differierte signifikant zwischen den drei Gruppen. Sie scheint vom Salzgehalt der Ertrinkungsflüssigkeit abzuhängen. Es gab keinen signifikanten Unterschied zwischen den Milchsäurekonzentrationen der drei Gruppen. Die Elektrolytgehalte (Na und Cl) im Blut der rechten Herzhälfte spiegelten die Natur der Ertrinkungsflüssigkeit wider.
    Notizen: Summary Three kinds of drowning media, i.e., fresh water, isotonic saline, and hypertonic saline were used. After a rat was placed in a desiccator, measuring 17 cm in height and 14 cm in diameter, the vessel was filled with fluid. The average survival time of about 2.5 min did not differ significantly among the three groups. The hypertonic saline group showed the highest values in both the water content of the lung and the lung/body weight ratio; however, this group did not differ significantly from the isotonic saline group in either of the parameters. The difference between the isotonic saline group and the fresh water group was significant. There was a significant positive correlation between the two parameters. However, the lung/body weight ratio was more sensitive to the nature of the drowning media. The frequency, with which froth appeared at the nostrils of the animals that were recovered from the fluid differed significantly among the three groups. The froth appeared almost exclusively in the rats drowned in saline solution. The appearance rate seemed to depend on the salinity of the fluid. There was no significant difference in lactate concentrations among the three groups. The electrolyte (Na and Cl) concentrations in the blood of the right side of the heart reflected the composition of the drowning media.
    Materialart: Digitale Medien
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  • 7
    Digitale Medien
    Digitale Medien
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 595-598 (Sept. 2008), p. 725-732 
    ISSN: 1662-9752
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Notizen: A family of creep-resistant, Al2O3-forming austenitic (AFA) stainless steels was recentlydeveloped. The alloys exhibit excellent oxidation resistance up to ∼800°C, but are susceptible tointernal attack of Al at higher temperatures. In the present work, higher levels of Ni, Cr, Al, and Nbadditions were found to correlate with improved oxidation behavior at 900°C in air. The alloysgenerally appeared to be initially capable of external Al2O3 scale formation, with a subsequenttransition to internal attack of Al (internal oxidation and internal nitridation) that is dependent onalloy composition. Compositional profiles at the alloy/scale interface suggest that the transition tointernal oxidation is preceded by subsurface depletion of Al in the lower-Al compositions. In higherAl-containing compositions, NiAl second-phase precipitates act as an Al reservoir, and Al depletionmay not be a key factor. Alloy design directions to increase the upper-temperature limit ofprotective Al2O3 scale formation in these alloys are discussed
    Materialart: Digitale Medien
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  • 8
    ISSN: 1436-5073
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Thiazolylazophenol mit einer Methyl- bzw. Phenylgruppe am Thiazolring wurde synthetisiert und seine Eignung für die spektrophotometrische Bestimmung von Eisen(II) studiert. Diese Farbstoffe bilden mit Fe(II) bräunliche Komplexe, die charakteristische Absorption im nahen IR zeigen. Unter ihnen ist 2-(2-Benzothiazolylazo)-4-methoxyphenol am besten geeignet. Der Fe(II)-Komplex hat ein Absorptionsmaximum bei 815 nm in Chloroform. Das optimale pH für die Eisenextraktion liegt zwischen 5,5 und 9,5; das Beersche Gesetz ist bis zu 6 ppm Fe erfüllt, der molare Extinktionskoeffizient beträgt 1,47×104 l·mol−1·cm−1. Fe(II)∶BTMP=1∶2. Die Extraktionskonstante ist log Kex=−0,76±0,12. Zahlreiche Ionen stören auch in größerer Menge nicht. Die Methode wurde zur Eisenbestimmung in Gemischen mit 3d-Typ-Metallen, in natürlichen Wässern und in inländischem Schwefel angewandt.
    Notizen: Summary Thiazolylazophenols containing a methyl or a phenyl group in the thiazole ring were synthesized and their potential for the spectrophotometric determination of iron were studied. These dyes react with iron(II) to form brownish complexes, which show a characteristic absorption in near-infrared region. Among them, 2-(2-benzothiazolylazo)-4-methoxyphenol is most suitable and the iron(II) complex has the absorption maximum at 815 nm in chloroform. The optimum pH for iron extraction lies between 5.5–9.5 and Beer's law holds up to 6 ppm of iron, with a molar absorptivity of 1.47×104 1 mol−1 cm−1. The composition and the extraction constant of the complex was found to be Fe∶BTAMP=1∶2 and log Kex=−0.76±0.12, respectively. Many kinds of ions can be tolerated even in the presence of large amounts. The method has been applied to the determination of iron in mixtures containing 3d type metal ions, natural waters and native sulfurs with satisfactory results.
    Materialart: Digitale Medien
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  • 9
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 299 (1982), S. 557-559 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The structure of the rotor is shown schematically in Fig. 1; it has an axis of rotation on which rests a float and three transverse bars to which blades (or vanes) are attached with wax. The axis and transverse bars are made of glass capillaries. The blades at each end of the transverse bars ...
    Materialart: Digitale Medien
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  • 10
    Digitale Medien
    Digitale Medien
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 561-565 (Oct. 2007), p. 1533-1536 
    ISSN: 1662-9752
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Notizen: Internal friction of Ti-24mol%Nb-3mol%Al (Ti-24Nb-3Al) shape memory alloy with awell-developed texture was investigated by dynamic mechanical analysis (DMA) in a tensile modewith a frequency of 1Hz and a temperature range of 123~423K. Ti-24Nb-3Al alloy fabricated byAr arc-melting was cold-rolled with a reduction in thickness of 99% and then heat-treated at 1173Kfor 3.6ks in vacuum to develop a recrystallization texture. The martensitic transformationtemperature and internal friction (tan δ) were evaluated under the stress amplitude of 36MPa. Thetensile direction was selected to be the rolling direction (RD) and the transverse direction (TD).The specimen was β-single phase with a well-developed {112}β〈110〉β texture at room temperatureand exhibited high damping during martensitic transformation and in the martensite phase. Therelationship between internal friction and the tensile direction is discussed on the view point of thecrystallography of the transformation
    Materialart: Digitale Medien
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