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  • 1
    Monograph available for loan
    Monograph available for loan
    The effect of mechanica forcing on the formation of a mesoscale vortex (1984)
    Bracknell : ECMWF
    Associated volumes
    Details Availability
    Call number: MOP Per 409(45)
    In: Technical report
    Type of Medium: Monograph available for loan
    Pages: III, 42 S.
    Series Statement: Technical report / European Centre for Medium Range Weather Forecasts 45
    URL: http://www.ecmwf.int/publications/library/ecpublications/_pdf/tr/tr45.pdf
    Location: MOP - must be ordered
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    Elastolytic activity from Flavobacterium odoratum. Microbial screening and cultivation, enzyme production and purification
    Amsterdam : Elsevier
    Process Biochemistry 29 (1994), S. 427-436 
    Details
    ISSN: 1359-5113
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0032-9592(94)85010-0
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  • 3
    Electronic Resource
    Electronic Resource
    Calibration Technology of the Articulated Arm Flexible CMM (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 381-382 (June 2008), p. 161-164 
    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: A simple and practical calibration method is proposed to calibrate the articulated armflexible CMM. Firstly, a quasi-spherical coordinate system is put forward based on DH methodaccording to the special structure of the articulated arm flexible CMM. This calibration method ispresented to determine and separate machine parameters and errors in a creative way based onmultiple reversal technology. Experiments were carried out for a Faro Platinum 4ft articulated armCMM by using a Chameleon 9159 5Q orthogonal CMM. The results prove the feasibility of theproposed method for articulated arm CMM calibration, and all parameters are separated completely.It provides a theoretical base for introducing error compensation and improves the measurementaccuracy of the articulated arm CMM
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.381-382.161.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Investigation on a Fabrication Technique of TiAl Sheet (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 475-479 (Jan. 2005), p. 805-808 
    Details
    ISSN: 1662-9752
    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: A TiAl sheet fabrication technique from Ti/Al foils was studied experimentally. Firstly, the reaction sequence between Ti and Al foils were studied with DSC and then a three stage solid transformations processing was carried out. At the first stage, Al diffused into Ti foils and formed Al3Ti. The heating temperature was selected based on a ruler that the pure Al was consumed by solid diffusion with a short time and avoiding the melting of Al. The resulted microstructure consists of pure Ti and Al3Ti. At the second stage, part of Al in Al3Ti diffused into pure Ti and formed the high temperature phase. At the third stage, the sample was heated into the high temperature -phase zone and hold a given time and then cooling with the furnace. A full density γ-TiAl based alloy sheet with lamellar microstructure was successfully fabricated under above processing. The lamellar orientations are aligned around 0-45o compared to the longitudinal direction of the sheet
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/09/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.475-479.805.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Conceptual Design Based on the Divergent Tree Method for Tool Torage (2004)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 259-260 (Mar. 2004), p. 772-777 
    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
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/47/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.259-260.772.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    A Portable 3D Vision Coordinate Measurement System Using a Light Pen (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 295-296 (Oct. 2005), p. 331-336 
    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: A portable three-dimensional vision coordinate measuring system is proposed in this paper. It consists of a light pen, a CCD camera and a laptop computer. The light pen is a hand-held probe with three point light sources using LEDs and a spherical touch stylus arranged in one line. The CCD camera takes the image of LEDs on the light pen and the 3D coordinates of measured point at the center of touch stylus are obtained by computing the positions of LEDs in the image when the probe contacts the object surface. The equations of the vision measurement system are derived by using perspective of three collinear points and spatial analytic geometry. The measuring device can be set up easily on an industrial site and the measurement is convenient. The object surface can be simple, complex, or hidden from the view of camera. The effectiveness of the mathematical model and validity of the measuring system are confirmed by experiments
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/50/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.295-296.331.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Digital Image Processing for a Liquid Signature Analyzer System with CCD Camera (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 295-296 (Oct. 2005), p. 705-710 
    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: CCD camera is used in the liquid signature analyzer system to capture images of the liquid drop of the tested sample. The digital image processing work is presented. CCD camera records the variation of the liquid drop during growth. The outline information of the drop is available through image processing. The instantaneous volume of the liquid drop can be gained through mathematical calculation. With the use of CCD camera, the information of the tested sample we can get during the measurement is enhanced. The function of the liquid signature analyzer is enriched and the discrimination ability of this technology is improved
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/50/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.295-296.705.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    The role of the heat source of the Tibetan Plateau in the general circulation (1998)
    Springer
    Meteorology and atmospheric physics 67 (1998), S. 181-198 
    Details
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Summary In this paper, the thermal features of the atmosphere over the Tibetan Plateau in summer and their effects on the general circulation are reviewed. Some recent research results are reported. It is shown that the Plateau acts as a heat source in summer. Particularly the strong surface heating makes the air stratification very unstable and produces strong near-surface convergence and positive vorticity and upper layer divergence and negative vorticity. Intense convective activity generated thereby not only maintains such particular large-scale circulation pattern over the Plateau, but also transports large amounts of sensible heat, moisture, chemical pollutants, as well as air with low ozone concentration from near-surface layers to upper layers. A minimum centre of total ozone concentiation and a huge upper layer anticyclone with a warm and moist core are thus observed over the Plateau in summer. The strong divergent flow and anticyclonic vorticity source in the upper atmosphere have a strong influence on the general circulation over the world via meridional as well as longitudinal circulations, and energy, dispersion on a spherical surface. It is shown that the surface sensiole heating of the Plateau is essential for the occurrence of the abrupt seasonal change of the general circulation there, and for the persisten maintenance of the Asian monsoon. It is also reported that the elevated heating of the Tibetan Plateau together with its mechanical forcing cause the early onset of the Asian monsson to happen over the eastern coast of the Bay of Bengal, which then generates a favorable circulation background for the monsoon onset over the South China Sea. The Indian monsoon onset flows aftervards.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01277509
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  • 9
    Electronic Resource
    Electronic Resource
    Study on the Dynamic Active Confocal Probe Based on Time Difference for Surface Measurement (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 532-533 (Dec. 2006), p. 89-92 
    Details
    ISSN: 1662-9752
    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: With the development of modern industry, the consciousness of quality monitoringincreases rapidly. The requirements to the dimensional control and profile monitoring of theproducts including the mechanical, optical and electric ones become higher and higher. New,non-contact and convenient instruments are needed to enable people to evaluate their products. Anew type of dynamic active confocal probe is developed in this paper. The key point of this newmethod is that the displacement measurement of the vibrating lens located on the tuning fork isconverted to time difference measurement, which is much simpler and assures higher accuracy inmeasurement. System structure and improvement, electric circuit and signal processing system arediscussed. Experimental studies of the probe performance and analyses of the experimental resultsare presented
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.532-533.89.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Machine Vision and Data Reconstruction for Measuring Free Form Surface (2004)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 471-472 (Dec. 2004), p. 508-512 
    Details
    ISSN: 1662-9752
    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: Reverse engineering of free-form surfaces is one of the most challenging technologies in advanced manufacturing. With the development of industry more and more sculptured surfaces, such as molds and turbine blades, are required to measure quickly and accurately. Optical non-contact probes possess many advantages, such as high speed, no measuring force, in comparison with contact ones. The ability of stereovision probe with CCD cameras in gathering a large amount of information simultaneously makes it the most popularly used one in sculptured surface measurements. So based on the laser triangular principle, a measuring and testing device with two CCD cameras was designed, and its accuracy was analyzed. With a virtual 3D target in form of a grid plate, all the intrinsic and extrinsic parameters of CCD camera including the uncertainty of image scale factor and optical center of camera can be readily calibrated. In order to obtain all the required data with high accuracy in a short time, the curvature-based adaptive sampling strategy is presented. Due to huge amount of arbitrary scattered points, the Delaunay triangular division and Bezier interpolation and NURBS interpolation are applied to get a continuous surface
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/09/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.471-472.508.pdf
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