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  • 2005-2009  (116)
  • 1950-1954  (8)
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  • 1
    Electronic Resource
    Electronic Resource
    TASTE PERCEPTIONS AND DIETARY INTAKES OF SMOKELESS TOBACCO USERS AND NONTOBACCO USERS (2005)
    Oxford, UK and Malden, USA : Blackwell Science Inc
    Journal of sensory studies 20 (2005), S. 0 
    Details
    ISSN: 1745-459X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Smokeless tobacco and nontobacco users differed for certain concentrations of perceived intensities of the four solutions – significantly for sweet (P ≤ 0.008) and salty (P = 0.001). Sensitivity to salty (P = 0.02) and bitter (P = 0.11) solutions decreased with increasing hours of exposure to smokeless tobacco. Smokeless tobacco and nontobacco users rated fruits and vegetables for preference and the four taste senses differently, with a decreasing trend for sweet tastes in smokeless tobacco users with increasing hours of exposure to smokeless tobacco. Smokeless tobacco users consumed more total fat (P = 0.06) and fat per 1000 kcal (P = 0.13) than nontobacco users. Higher intakes of total fat (P = 0.005), total fat per 1000 kcal (P = 0.18), total sodium (P = 0.03) and total Vitamin E (P = 0.06) were found with increasing hours of exposure to smokeless tobacco. Although fruit and vegetable intakes did not differ between smokeless tobacco and nontobacco users, both groups should increase their consumption of fruits and vegetables.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-459X.2005.00022.x
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  • 2
    Electronic Resource
    Electronic Resource
    Markoff chain modelling of NDI techniques (2005)
    PO Box 1354, 9600 Garsington Road, Oxford OX4 2XG, UK. : Blackwell Science Ltd
    Fatigue & fracture of engineering materials & structures 28 (2005), S. 0 
    Details
    ISSN: 1460-2695
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: A procedure for non-destructive inspection by taking into account the effects of stochastic fatigue crack growth is presented. For this purpose a Markoff chain model is used to update the crack statistics, allowing an efficient computational implementation and a clear account of the involved concepts. In this context, perfect and imperfect removal of cracks, respectively, are considered, which represent idealizations defining bounds for actual situations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1460-2695.2004.00853.x
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  • 3
    Electronic Resource
    Electronic Resource
    Use of carbon-11 in Populus shows that exogenous jasmonic acid increases biosynthesis of isoprene from recently fixed carbon (2005)
    Oxford, UK : Blackwell Science Ltd
    Plant, cell & environment 28 (2005), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: A new approach for pulse labelling of plants using the short-lived positron emitting radioisotope carbon-11 (half-life: 20.4 min) as 11CO2 is reported together with its application to measuring [11C]isoprene emissions from intact leaves capturing information associated with: (1) rate of emission; (2) the relative contribution of recently fixed carbon to isoprene biosynthesis; and (3) the transit time for tracer movement through the leaf and biochemical pathways associated with isoprene biosynthesis. This approach was applied to study the response of certain Populus species to exogenous treatments of jasmonic acid (JA), a plant hormone implicated in signal transduction linked to defence response against herbivory. Twelve hours after treatment of single intact leaves of aspen (Populus tremuloides) with a 1 m m JA spray, isoprene emissions from those leaves increased 1.5 times the controls from 35.4 ± 2.2 to 53.1 ± 4.8 nmol m−2 s−1. [11C]Isoprene emissions from the same leaves, reflecting the isoprene that was derived from recently fixed carbon, increased much more, to 2.2 times the controls. This increase coincided with a change in emitted [11C]isoprene from 0.31 to 0.68% of 11C fixed in the leaf tissue, while the tracer transit time remained constant at 12.5 min. These results suggest that JA had no effect on enzyme kinetics involved in isoprene biosynthesis, but did impact the source of recent carbon feeding that pathway. Studies with poplar (Populus nigra clone NC 5271) showed similar trends in systemic emissions (from an untreated leaf on the same plant).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3040.2004.01303.x
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  • 4
    Electronic Resource
    Electronic Resource
    Constitutive expression of yeast phospholipid biosynthetic genes by variants of Ino2 activator defective for interaction with Opi1 repressor (2005)
    Oxford, UK : Blackwell Science Ltd
    Molecular microbiology 56 (2005), S. 0 
    Details
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Regulated expression of structural genes involved in yeast phospholipid biosynthesis is mediated by inositol/choline-responsive element (ICRE) upstream motifs, bound by the heterodimeric activator complex Ino2 + Ino4. Gene repression occurs in the presence of sufficient inositol and choline, requiring an intact Opi1 repressor which binds to Ino2. For a better understanding of interactions among regulators, we mapped an 18 aa repressor interaction domain (RID, aa 118–135) within Ino2 necessary and sufficient for binding by Opi1. By alanine scanning mutagenesis of the entire RID we were able to identify nine residues critical for Opi1-dependent repression of Ino2 function. Consequently, the corresponding dominant Ino2 variants conferred constitutive expression of an ICRE-dependent reporter gene and were no longer inhibited even by overproduction of Opi1. Interestingly, Ino2 RID partially overlaps with transcriptional activation domain TAD2. As certain mutations exclusively affect repression while others affect both repression and activation, both functions of Ino2 can be functionally uncoupled. Correspondingly, we mapped the RID–binding activator interaction domain (AID, aa 321–380) at the C-terminus of Opi1 and introduced missense mutations at selected positions. An Opi1 variant simultaneously mutated at three highly conserved positions showed complete loss of repressor function, confirming RID–AID interaction as the crucial step of regulated expression of ICRE-dependent genes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2958.2004.04499.x
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  • 5
    Electronic Resource
    Electronic Resource
    Die Diorite von Dessau (1952)
    Springer
    Contributions to mineralogy and petrology 3 (1952), S. 77-96 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Zusammenfassung Petrographische und chemische Untersuchungen an Dioriten und Graniten des Kyffhäuser und von Dessau lassen eine Ichor-Metamorphose, d. h. eine Alkali-Metasomatose von den Porenräumen aus, erkennen. In den metamorph-metablastischen Granitabkömmlingen wird die Ichor-Metamorphose deutlich an einer Glomeroblastenbildung und einer erneuten körnigen Texturentwicklung. Diese beweist eine Zufuhr von Albitmolekül. Sie wird in dem metamorph-metablastischen dioritischen Gestein neben der Verdrängung der primären Plagioklase aus der Alkalisierung und Enteisenung der Hornblende ersichtlich. Die magmatischen Ausgangsgesteine: Diorit, Quarzdiorit, Biotitdiorit, Gabbrodiorit (?) und Hornblendegabbro zeigen neben der Alkalisierung eine Muskovitisierung der basischen Plagioklase und eine Biotitisierung der Hornblende, woraus eine Zufuhr an Kali hervorgeht. Diese Stadien der Metamorphose durchlaufen den tektonischen Raum von der Grenze metamorph-nichtmetamorph bis hinab zur Grenze metamorph-magmatisch (Erdmannsdörffer) und rind in der Mitteldeutschen Schwelle zuerst aus dem tiefsten Stockwerk, im Südwesten im Odenwald-Spessart (Erdmannsdörffer) und nunmehr auch aus ihrer äußersten Haube erkannt worden, wo die Schwelle unter die Phyllithülle hinabtaucht.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01130079
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  • 6
    Electronic Resource
    Electronic Resource
    Über einen ungewöhnlichen Saponit von Raschau i. Sa. (1950)
    Springer
    Contributions to mineralogy and petrology 2 (1950), S. 279-290 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01098088
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  • 7
    Electronic Resource
    Electronic Resource
    Über den Nachweis von echtem Leverrierit in Tonsteinen aus unterkarbonischen Steinkohlenflözen von Dobrilugk (1950)
    Springer
    Contributions to mineralogy and petrology 2 (1950), S. 269-278 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Zusammenfassung Die Existenz des Leverrierit als selbständiges Mineral wird mineralogisch (A. Schüller) und chemisch (H. Grassmann) nachgewiesen. Zusammenfassend seien die Eigenschaften des Leverrierit und des mit ihm verwechselten Kaolinit gegenübergestellt (Tabelle 4).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01098087
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  • 8
    Electronic Resource
    Electronic Resource
    Die Tonsteine aus den Steinkohlenflözen von Dobrilugk und ihre Entstehung (1951)
    Springer
    Contributions to mineralogy and petrology 2 (1951), S. 413-427 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Zusammenfassung Es werden Tonsteine beschrieben, die als „biochemische” Sedimente im Steinkohlenmoor gebildet wurden. Die bisherige Deutung, solche Tonsteine seien ehemalige vulkanische Aschentuffe, wird als zur Zeit petrographisch unbegründet abgelehnt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01083630
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  • 9
    Electronic Resource
    Electronic Resource
    Eine natürliche Mineralsynthese von Montmorillonit im Nephelinbasalt des Großen Dolmar bei Meiningen (Rhön). (1953)
    Springer
    Contributions to mineralogy and petrology 3 (1953), S. 472-494 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01129199
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  • 10
    Electronic Resource
    Electronic Resource
    Finite-Element-Simulation of Interfacial Crack Propagation: Cross-Check of Simulation Results with the Essential Work of Interfacial Fracture Method (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 312 (June 2006), p. 9-14 
    Details
    ISSN: 1013-9826
    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
    Notes: An advanced finite-element model for the complete failure process of a double notched specimen with crack tip blunting caused by yielding and subsequent crack propagation is used for the simulation of realistic specimens. Cracks in a homogeneous material and bimaterial cracks are studied. The calculated load-displacement curves show generally the shape known from experiments and theoretical considerations. The simulation allows determination of a working rangeof set up parameters like geometry, test speed or clamping conditions.The numerical model simulates crack propagation on the basis of a criterion which is similar to the energy release rate. The essential work of interfacial fracture method provides a method to determine the fracture toughness from load-displacement curves. This method is well suited to check the numerical simulation because both use an energy based failure criterion. If applied to simulated load-displacement curves the resulting essential work of interfacial fracture shoulddirectly match the fracture criterion used as input for the simulation.In fact, the data reduction of the simulated curves results in values for the fracture toughness that almost perfectly match the input values of the simulation. This agreement is a strong argument for the consistency of the simulation and the data reduction scheme
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.312.9.pdf
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