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  • 11
    Electronic Resource
    Electronic Resource
    Development of a generic PCR detection of deoxynivalenol- and nivalenol-chemotypes of Fusarium graminearum (2005)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 243 (2005), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Based on the intergenic sequences of Tri5–Tri6 genes involved in the mycotoxin pathways of Fusarium species, a generic PCR assay was developed to detect a 300 bp fragment of deoxynivalenol (DON)-chemotypes and a 360 bp sequence of nivalenol (NIV)- chemotypes of Fusarium graminearum. Mycotoxin chemotypes identified by the PCR assays were confirmed by the chemical analyses of HPLC or GC/MS. Further analysis of 364 F. graminearum isolates from 12 provinces of China showed that 310 were DON-chemotypes and 54 were NIV-chemotypes. Sequence analyses revealed that DON-chemotypes display more variations than NIV-chemotypes. This PCR assay could be used to detect mycotoxin-producing Fusarium-species and may thus help to develop strategies to avoid or reduce mycotoxin contamination of cereals. Also this assay may provide useful alternatives to antibody-based mycotoxin tests.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/j.femsle.2005.01.015
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    Paper (German National Licenses)
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  • 12
    Electronic Resource
    Electronic Resource
    Fabrication of C〈sub〉sf〈/sub〉/Mg Composites Using Extrusion Directly Following Vacuum Infiltration - Part 2: Forming Process Study (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 141-143 (July 2008), p. 91-96 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: Extrusion directly following vacuum infiltration is a special forming technique thatcombines the advantages of liquid metal infiltration and semisolid extrusion. The major advantages ofthis process are elimination of porosity and shrinkage, good surface finish, good dimensionalaccuracy, high strength to weight ratio and near net shaping. Magnesium matrix composites arefabricated usually through stirring casting, powder forming, injecting deposition, liquid metalinfiltration or die casting at present time. However few investigations on magnesium matrixcomposite are conducted for the specific characteristics of magnesium alloy, such as high chemicalactivity and easy oxidation. The present paper is focused on Csf/Mg composites obtained viainfiltration of porous short carbon fiber preform by liquid Magnesium. The complete experimentsetup is designed and fabricated by ourselves, which include the forming molds, the unit for meltingthe magnesium, the unit for vacuuming and the monitoring and collecting system of forming processparameters. In this method the whole experiment setup is vacuumed firstly. Then the pressurizednitrogen is used to infiltrate the magnesium melt through a porous preform of short carbon fibers.After the infiltration completed, the punch of the press extrude the magnesium-infiltrated preform outof the forming die to form the tubes or bars. X-ray diffraction (XRD), optical and SEM microscopeswere used to characterize the infiltration and the microstructure of fabricated composites. Thecompression test was used to characterize the mechanical properties of fabricated composites. Theresults show that the preform was infiltrated thoroughly by melt magnesium and the fabricated Csf/Mgcomposites have excellent mechanical properties compared with the magnesium alloys. Csf/Mgcomposites should be very promising candidates for automobile parts and portable electronicappliance parts in the future
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.141-143.91.pdf
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  • 13
    Electronic Resource
    Electronic Resource
    Numerical Simulation of Residual Stress in Cu-Fe-P Alloy (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 118 (Dec. 2006), p. 393-398 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: The residual stress distribution of microstructure about Cu-Fe-P alloy for leadframe is simulated by finite element method of elastic-plastics deformation. The effect of thedensity of Fe particle on residual stress is mainly analyzed. It is indicated that the larger thedensity of particle is, the larger residual stress in particle and matrix near the interface is, andthe larger stress difference between both the sides is. When the density of Fe particle is 35%and the compressive extent of cold rolling is 25%, in the X-direction, the stress variation ofthe Cu matrix is from compressive 900MPa to tensile 1480MPa, and stress of the Fe particleis about compressive 246MPa. The maximum residual stress gradient near the interfacebetween Cu matrix and Fe particle reaches 1726MPa. The bigger stress concentration andresidual stress will destroy the quality of the material. Even peelings on the surface occur. Sothe appearance of bigger Fe particle goes against the quality of the material, and it should beavoided as far as possible in the production of Cu-Fe-P alloy for lead frame
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/22/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.118.393.pdf
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    Paper (German National Licenses)
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  • 14
    Electronic Resource
    Electronic Resource
    A check on the energy method of predicting blade transonic stall flutter (1986)
    Springer
    Acta mechanica Sinica 2 (1986), S. 121-128 
    Details
    ISSN: 1614-3116
    Keywords: aeroelasticity ; blade stability ; stall flutter
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract An improved structural dynamic model of an oscillating blade in two degrees of freedom is combined with an unsteady aerodynamic model for the transonic flow about a cascade with separation, which results in a coupled system. The system is solved in an iterative way between the two models. As a check on the current energy methods, the stall flutter boundaries for two real rotors are predicted by using the present method and the results are compared with the experiments and those predicted by using an energy method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02485852
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    Paper (German National Licenses)
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  • 15
    Electronic Resource
    Electronic Resource
    Partial hydrogenation of cyclopentadiene over amorphous NiB alloy on α-alumina and titania-modified α-alumina (1998)
    Chichester : Wiley-Blackwell
    Journal of Chemical Technology AND Biotechnology 72 (1998), S. 280-284 
    Details
    ISSN: 0268-2575
    Keywords: supported amorphous NiB alloy ; hydrogenation of cyclopentadiene ; catalytic activity ; crystal support and its modification ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Amorphous nickel-boron alloys supported on α-alumina (NiB/Al2O3) and on titania-modified α-alumina (NiB/TMA) with titania loadings ranging from 1·25 to 10 wt% were prepared by a reductive impregnation method, which resulted in a highly dispersed NiB amorphous alloy on the support. When used as catalysts for partial hydrogenation of cyclopentadiene to cyclopentene in a flow fixed-bed reactor at atmospheric pressure, the NiB/Al2O3 showed higher activity than Ni/Al2O3 and Pd/Al2O3 but the NiB/TMA with 5 wt% of titania loading (NiB/TMA5) showed the highest activity of all for the production of cyclopentene in a temperature range of 80-200°C with 10 g gcat-1 h-1 of cyclopentadiene feed. The maximum yield of cyclopentene was 97% on NiB/TMA5, 92% on NiB/Al2O3, 60% on Ni/Al2O3 and 23% on Pd/Al2O3, respectively. The catalytic stability of the amorphous NiB/TMA5 was also excellent with time on stream. The catalyst samples were characterized by ICP, XRD, XPS, BET, TEM and O2 adsorption. The probable modification mechanism is discussed. © 1998 SCI
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 16
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    Two-stage influences of hydrothermal fluids on pumice near the Iheya North hydrothermal field, Okinawa Trough (2018)
    Taylor & Francis
    In:  Marine Georesources & Geotechnology, 36 (4). pp. 393-404.
    Details
    Publication Date: 2018-12-17
    Description: Hydrothermal precipitates and hydrothermal alteration products could record important information about temporal variations of seafloor hydrothermal systems. Geochemistry, mineralogy, and microscopic features of three pumice samples (T3-1, T3-2, and T3-3) near the Iheya North hydrothermal field were analyzed in this article. The results show that T3-3 sample has undergone at least two-stage influences by hydrothermal fluids. In the first stage, pure amorphous silica from hydrothermal fluid precipitated in the vesicles of all three T3 samples as a result of conductive cooling and fluid–seawater mixing. The precipitation temperatures according to oxygen isotope thermometer are approximately 13–21°C. In the second stage, T3-3 pumice underwent low-temperature hydrothermal alteration, during which the amorphous silica precipitates were redissolved, together resulting in losses of FeO and SiO2 and gains of MgO, Pb, Zn, and Cu. Furthermore, ferruginous filamentous silica, which might be related to activities of Fe-oxidizing bacteria, was formed in the altered pumice. The transformation from pure amorphous silica precipitation to redissolution of the silica in T3-3 pumice might indicate a rise of temperature and/or decrease in silica concentrations in hydrothermal fluids, implying a changing hydrothermal environment.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1080/1064119X.2017.1318987
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 17
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    Reply to 'Unclear causes for subduction' (2016)
    Nature Research
    In:  Nature Geoscience, 9 (5). pp. 338-339.
    Details
    Publication Date: 2019-02-01
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1038/ngeo2704
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 18
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    Temporal evolution of proto-IBM arc volcanism: Constraints from statistical analysis on geochemical data of melt inclusions (2018)
    In:  [Poster] In: EMPG-16 (Sixtheenth International Symposium on Experimental Mineralogy, Petrology and Geochemistry), 17.-21.06.2018, Clermont-Ferrand, France .
    Details
    Publication Date: 2019-01-11
    Type: Conference or Workshop Item , NonPeerReviewed
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    OceanRep: Poster
  • 19
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    Parameter study for enhanced high gain harmonic generation scheme (2011)
    Institute of Physics (IOP)
    Details
    Publication Date: 2011-09-17
    Description: An easy-to-implement scheme called Enhanced High Gain Harmonic Generation is expected to be able to significantly enhance the performance of HG-FEL. In this paper we investigate the effects of the system parameters in the new scheme, including the electron energy detuning, initial electron-beam energy spread, seeding laser power, dispersive field strength and amount of the phase shift, etc. The numerical results from GENESIS (3D-code) are presented and show that the new scheme has acceptable parameters tolerance requirements and is no more or even less sensitive to the system parameters than that of the existing scheme; With the electron energy above the resonance, the efficiency is enhanced for both the new scheme and the existing scheme compared with the resonant energy case.
    Print ISSN: 1674-1137
    Topics: Physics
    Published by Institute of Physics (IOP)
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  • 20
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    Study on Metal-Induced Reactions of α-Diazocarbonyl Glucosides (2012)
    American Chemical Society (ACS)
    Details
    Publication Date: 2012-10-02
    Description: The Journal of Organic Chemistry DOI: 10.1021/jo300986c
    Print ISSN: 0022-3263
    Electronic ISSN: 1520-6904
    Topics: Chemistry and Pharmacology
    Published by American Chemical Society (ACS)
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