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  • 1
    Electronic Resource
    Electronic Resource
    Cyclodehydration of diols catalyzed by CpxMCl4-x (x = 0-2; M = Ti, Zr, Hf) (1994)
    s.l. : American Chemical Society
    Industrial & engineering chemistry research 33 (1994), S. 444-447 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie00026a042
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  • 2
    Electronic Resource
    Electronic Resource
    Dimerization of ethylene and propylene catalyzed by transition-metal complexes (1986)
    s.l. : American Chemical Society
    Chemical reviews 86 (1986), S. 353-399 
    Details
    ISSN: 1520-6890
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/cr00072a004
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  • 3
    Electronic Resource
    Electronic Resource
    Dimerization of ethylene to 1-butene catalyzed by the titanium alkoxide-trialkylaluminum system (1988)
    s.l. : American Chemical Society
    Industrial & engineering chemistry research 27 (1988), S. 1971-1977 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie00083a003
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  • 4
    Electronic Resource
    Electronic Resource
    Litter and aerosol sampling of chicken houses for rapid detection of Salmonella typhimurium contamination using gene amplification (2000)
    Springer
    Journal of industrial microbiology and biotechnology 24 (2000), S. 379-382 
    Details
    ISSN: 1476-5535
    Keywords: Keywords: Salmonella; aerosol sampling; PCR; poultry house
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Rapid screening of poultry houses for contamination is critical for Salmonella control. Use of air filter sampling has great potential for efficient and reliable monitoring of Salmonella spp., as it could represent an entire poultry house and solve sample-size problems. Two sampling methods (litter and air filter) were compared for detection in four chicken pens inoculated with a S. typhimurium antibiotic resistant strain. Salmonella levels in both litter and air filter samples were determined by PCR amplification and by conventional enrichment. Although amplified DNA was not directly detected, amplified DNA could be detected using a dual probe hybridization sensor. The ratio of the positive samples to total samples determined by gene amplification was much lower than that obtained by conventional enrichments (29/128 versus 102/128 samples). However, the ratio obtained by gene amplification with air filter samples was greater than that with litter samples (26/64 versus 3/64). These results demonstrate that the air filter sampling method is an alternative method of Salmonella detection in poultry house using PCR gene amplification protocol. Journal of Industrial Microbiology & Biotechnology (2000) 24, 379–382.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/sj.jim.7000008
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  • 5
    Electronic Resource
    Electronic Resource
    A new method for the measurement of the diffusivity of carbon in alpha-iron using an electrochemical cell (1995)
    Springer
    Journal of applied electrochemistry 25 (1995), S. 776-780 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A new method has been employed to measure the diffusivity of carbon in alpha iron. The method involves the measurement of ionic current of a carbon concentration cell which employs an iron cylinder as the anode. The design of the cell is such that when a constant external potential is applied, the ionic current is determined by the concentration polarization of carbon in the two electrodes. From the values of ionic current, the diffusivity of carbon (D c) is calculated by the application of Fick's law. The results in the temperature range 854–975 K have been fitted by regression analysis to obtain the expression:D c = 2.448 × 10−5 exp(−102900.7/RT) withD c in m2 s−1 andR in JK−1 mol−1. The results agree well with data in the literature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00648633
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  • 6
    Electronic Resource
    Electronic Resource
    Hypothesis K of Hardy and Littlewood (1936)
    Springer
    Mathematische Zeitschrift 41 (1936), S. 537-540 
    Details
    ISSN: 1432-1823
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01180439
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  • 7
    Electronic Resource
    Electronic Resource
    Rapid removal of phosphorus from sewage by activated sludge (1959)
    Springer
    Cellular and molecular life sciences 15 (1959), S. 339-340 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Résumé La plus grande partie du phosphore contenu dans les eaux d'égouts y compris le phosphore dissous dans l'eau a été rapidement éliminée à l'aide de boue «activée», en l'espace de 6 h. Le liquide recueilli par le procédé de boue «activée» contient très peu de phosphore. Le taux du phosphore éliminé suit de très près la vitesse de purification et d'oxydation des eaux d'égouts. L'activité des bactéries contenues dans la vase ne semble pas expliquer la disparition rapide du phosphore contenu dans les eaux d'égouts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02159818
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  • 8
    Electronic Resource
    Electronic Resource
    Preparation of Vanadium Tin Oxide Solid Solution at 500 °C from Xerogel and Metallic Tin (1999)
    Springer
    Journal of materials science 18 (1999), S. 661-663 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006619523123
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of External Stress on the Behavior of Oxide Scales on 9Cr-1Mo Steel (1998)
    Springer
    Oxidation of metals 49 (1998), S. 509-530 
    Details
    ISSN: 1573-4889
    Keywords: OXIDE SCALE ; EXTERNAL STRESS ; ACOUSTIC EMISSION ; SEGREGATION ; 9Cr-1Mo STEEL
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Tensile specimens of 9Cr-1Mo steel weresubjected to oxidation in air at a temperature of 973 Kfor periods of 25, 47, 70, 97, 120, and 140 hr. Theintegrity of the oxide scale was examined by an in-situ technique which involved the recording of theacoustic-emission activity associated with the breakingof the scale. Specimens were also subjected to oxidationfor the same times after subjecting them to an external stress of 40 MPa. The applicationof the external stress was found to alter the integrityof the scale. Spalling of the scale occurred to a lesserextent when external stress was applied due to partial release of growth stresses becauseof the elongation of the specimen. The scale buckledbefore spalling when no external stress was applied. Onthe other hand, the scale developed wedge-type cracks before spalling when subjected toexternal stress during oxidation. Postoxidationexamination of the stressed specimen revealedsubstantial segregation of silicon and chromium at thegrain boundaries (oxide ridges). The specimens, which wereoxidized without external stress, revealed a reductionin the concentration of chromium on the surface. Thisbehavior was attributed to enhanced spalling in the case of the latter specimen compared to theformer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018846828114
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  • 10
    Electronic Resource
    Electronic Resource
    Behavior of Oxide Scale on 9Cr–1Mo Steel Under Varying External Stresses (2000)
    Springer
    Oxidation of metals 53 (2000), S. 193-220 
    Details
    ISSN: 1573-4889
    Keywords: External stress ; oxide scale ; 9Cr–1Mo steel ; segregation ; critical strain rate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The effects of different external stresses on the oxidation behavior of9Cr–1Mo steel were investigated. Tensile specimens were subjected tostresses of 11, 20, 28, and 40 MPa and the oxidation behavior was studiedat a temperature of 973 K. The elongation of the specimen was determined byan extensometer. An acoustic-emission unit was employed to monitor theintegrity of the oxide scale. The oxide scale was found to undergo bucklingbefore spalling, in the case of unstressed specimens, and in the case ofthose specimens subjected to a stress up to 28 MPa. The specimen with 40 MPastress showed the development of cracks. The application of external stressup to 28 MPa (average strain rate for 28 MPa stress was1.2 x 10-7 s-1) had a beneficial effect with respectto the adherence of the oxide scale. The specimen with 40 MPa of stress(average strain rate of 5.2 x 10-77 s-1) showedsubstantial weight gain on oxidizing up to 140 hr. The unstressed specimenrevealed enhanced spallation when compared with the stressedones. Investigation by SEM revealed the spalling of the oxide scale when theduration of oxidation was higher than 70 hr at all stress levels employed inthe present investigation. Formation of cracks at 40 MPa exposed fresh areasto oxygen and caused accelerated oxidation. Analysis by energy-dispersiveX-ray spectrometry (EDS) revealed the segregation of chromium at the oxideridges. The segregation of silicon was also significant for the specimensubjected to a stress of 40 MPa. Analysis by XRD clearly revealed thepresence of oxides of chromium and iron (Cr2O3 andFe2O3) and spinel-type oxide (FeCr2O4).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004595016655
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