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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Inorganic chemistry 7 (1968), S. 1246-1248 
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Abacus 23 (1987), S. 0 
    ISSN: 1467-6281
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: The Australian professional accounting bodies developed their present educational policies during the period prior to 1964 when two major reports were issued. This paper traces the development of those educational policies, but particularly the crystallization of the philosophy underlying the decision of the Australian Society of Accountants to adopt degree level entry in 1965. The Institute of Chartered Accountants followed suit some years later. This signalled the end of the traditional system of part-time technical training associated with work experience, and established full degree-level education as a pre-requisite for professional accountants.
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 220 (1968), S. 373-374 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The first trials to isolate the active principle from the berries were made by Inglett et al.*, who found it virtually impossible to extract the active material from the berries with aqueous or organic solvents. By removal of inactive matter they achieved a five-fold concentration of the active ...
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  • 4
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Detection of a sound movement from phase cues was investigated in control subjects by using a binaurally presented tone of 500 Hz in which the phase was sinusoidally modulated at 2 Hz. In one condition, as the phase was advanced at one ear, it was retarded at the other. This produces a changing ...
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  • 5
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 19 (1965), S. 870-871 
    ISSN: 0001-5520
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 52 (1996), S. 744-749 
    ISSN: 1420-9071
    Keywords: Red Sea ; Cnidaria ; Anthozoa ; coral planulae ; induction of metamorphosis ; phorbol ester ; protein kinase C
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Controlled experiments on the metamorphosis of marine invertebrate larvae require artificial inducers. These inducers can be used for studying the involvement of known signal transduction pathways in settlement and metamorphosis. The ability of the tumor-promoting phorbol ester TPA (12-O-tetradecanoylphorbol-13-acetate) to induce metamorphosis in planulae of the Red Sea soft coral speciesHeteroxenia fuscescens, Xenia umbellata, Dendronephthya hemprichii, Litophyton arboreum andParerythropodium fulvum fulvum, and the stony coralStylophora pistillata, was examined by using various concentrations of TPA. The chemical induced metamorphosis in all six species. The effect was unspecific and concentration-related. For all the corals except forX. umbellata the highest mean percentages of metamorphosis were obtained with 8.1×10−7–10−9 M TPA. ForX. umbellata, the percentage of metamorphosis was lower, and was obtained within a wider TPA concentration range. The present results, along with previous studies on Hydrozoa and Scyphozoa, demonstrate that TPA is the first common artificial inducer for these classes of Cnidaria. TPA is known to activate the enzyme protein kinase C (PKC) and therefore plays an important role in studying the phosphatidylinositol signal transduction system. Evidence for the involvement of this pathway in triggering metamorphosis has already been reported for Hydrozoa and Scyphozoa. Our results suggest that PKC is also involved in initiating metamorphosis in Anthozoa.
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  • 7
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Heteroxenia fuscescens is a common zooxanthellate soft coral on the shallow reefs in the Gulf of Eilat, northern Red Sea. In the Red Sea, during its prolonged planulation, H. fuscescens is subjected to a seasonal environmental regime that alternates between stratified warm summer waters and upwelling of low-temperature winter waters. To examine the possible relationship between these seasonal fluctuations and the reproductive characteristics of H. fuscescens, we monitored its breeding activity for a 6-year period, including the percentage of colonies releasing planulae, number of planulae released per colony per night (fecundity), planula size and percentage of released deformed planulae. During summer and fall the combined average percentage of planulating colonies of H. fuscescens was significantly higher than in winter and spring. In addition, fecundity was greater during the summer than the rest of the year. Planulae released during summer were longer, with almost zero percent deformation. During the rest of the year they were shorter, with a higher percentage of deformation. The current study indicates that although H. fuscescens reproduces all year round, the quantity and quality of its reproductive features are subject to seasonal variability. In the Gulf of Eilat seasonal changes in the abiotic features of the water may have an impact on its reproduction. During summer, primary productivity reaches a distinctive maximum up to a depth of about 40 m. The winter upwelling waters introduce nutrients from the depths into the upper 200 m, and especially into the major primary productivity zone, thereby triggering the annual phytoplankton bloom. Because colonies of H. fuscescens gain nutritional benefit from uptake of organic material dissolved in the water and by carbon fixation by zooxanthellae, we␣suggest that the seasonal fluctuations in the species' reproductive traits are related to these fluctuations in nutrient and light levels.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Pharmaceutical research 10 (1993), S. 164-164 
    ISSN: 1573-904X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 40 (1901), S. 168-168 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 265 (1973), S. 97-104 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Zwei Dichtemeßmethoden werden an Prüflösungen unterschiedlicher scheinbarer relativer Dichte (0,9778–1,0648) getestet und verglichen. Für die zur Prüfung von Getränken, insbesondere von Weinen, herkömmliche Methode wird anhand von drei Prüflösungen im Ringtest ein Vergleichsstreubereich von ±0,0003 ermittelt. Bei einer Prüflösung (Likörwein) beträgt er ±0,00042. Das beschriebene automatisierte, digitale Meßverfahren gestattet die Berechnung der Dichte ϱ oder der scheinbaren relativen Dichte D′ 20 20 aus der Resonanzfrequenz eines mit der Prüflösung gefüllten Biegeschwingers, der mit Hochfrequenz zur ungedämpften Schwingung angeregt wird. Der Vergleichsstreubereich 3σ dieses Verfahrens liegt für drei Prüflösungen sowie für Eichlösungen bei 〈5 · 10−5. Für den Likörwein wird er zu 7,8 · 10−5 berechnet.
    Notes: Abstract Two methods for density determination are compared for test solutions of different apparent relative density (0.9778–1.0648). In case of the conventional method a comparative variation range of ±0.0003 has been found for three test solutions by cooperative experiment. In case of one test solution (liqueur wine) ±0.00042 has been obtained. The automatized digital method described permits the calculation of the density ϱ or the apparant relative density D′ 20 20 from the resonance frequency of a flexural oscillator filled with the solution and excited to undamped oscillation by high frequency. The comparative variation range 3σ of this method was 〈5×10−5 for three test solutions and standard solutions. For liqueur wine it was 7.8×10−5. The mean values of the test solutions by the automatized method are within the single standard deviation of the pyknometric mean values. Both values are comparable. The digital method is recommended as reference method. It avoids subjective personal errors and makes possible the measurement of about 20 test solutions per hour.
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