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  • Electronic Resource  (75)
  • 2005-2009  (75)
  • 1910-1914
  • 2007  (75)
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  • Electronic Resource  (75)
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  • 2005-2009  (75)
  • 1910-1914
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  • 1
    Electronic Resource
    Electronic Resource
    SUMOylation of Tr2 orphan receptor involves Pml and fine-tunes Oct4 expression in stem cells (2007)
    [s.l.] : Nature Publishing Group
    Nature structural & molecular biology 14 (2007), S. 68-75 
    Details
    ISSN: 1545-9985
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] The Tr2 orphan nuclear receptor can be SUMOylated, resulting in the replacement of coregulators recruited to the regulatory region of its endogenous target gene, Oct4. UnSUMOylated Tr2 activates Oct4, enhancing embryonal carcinoma-cell proliferation, and is localized to the promyelocytic leukemia ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nsmb1185
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Evidence that homologous X-chromosome pairing requires transcription and Ctcf protein (2007)
    [s.l.] : Nature Publishing Group
    Nature genetics 39 (2007), S. 1390-1396 
    Details
    ISSN: 1546-1718
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] X-chromosome inactivation (XCI) ensures the equality of X-chromosome dosages in male and female mammals by silencing one X in the female. To achieve the mutually exclusive designation of active X (Xa) and inactive X (Xi), the process necessitates that two Xs communicate in trans through homologous ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/ng.2007.5
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Preparation and Evaluation of Macroporous Sol-Gel Bioglass with High Mechanical Strength (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 280-283 (Feb. 2007), p. 1585-1588 
    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: Bioactive glasses are known to have the ability to regenerate bone, but their use has been restricted mainly to powder, granules, or small monoliths. This work reports on the development of bioactive glasses with macroporosity of controlled size and volume through sol-gel and pore forming technologies. The macroporous structure (greater than 100µm) can provide the potential for tissueingrowth. Simultaneously the samples exhibit mesoporous (2-50nm) texture and high specific surface which can enhance bioactivity and release of ionic products. The most important advantage is that these samples show satisfactory mechanical strength. This method should be a useful approach for preparation scaffolds with applications to repair and reconstruct damaged tissue
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/49/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.280-283.1585.pdf
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    AE Evaluation of Relationship between AE Signals and Fracture Mechanisms for the Weldment of Pressure Vessel Steel (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 26-28 (Oct. 2007), p. 1181-1186 
    Details
    ISSN: 1662-8985
    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: The purpose of this study is to find out the AE characteristics and fracture mechanismsthrough AE signal analysis for the weldment, PWHT specimen and basemetal of the pressure vesselsteel. Charpy sized specimens were taken from the multi-passed weld block. Specimens were givento four point bend and AE tests. Lots of AE signals were emitted from the weldment compared withthe basemetal and PWHT specimen. Besides, amplitude for the weldment was the largest, followedby PWHT specimen and basemetal and more AE counts for the weldment were emitted in theprocess of deformation. Lots of microcracks around the notch for the weldment were formed so thatmore AE signals were produced. In addition, second phase particle such as MgO for the basemetalacts as AE source. However, in case of weldment, debonding mechanisms between matrix and hardoxides which are formed during welding in air attributed to the emission of AE signals and softenedparticles for the PWHT specimen cause to produce the low level AE signals
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.26-28.1181.pdf
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Strain Aging of Heavily Drawn Pearlitic Steel Wires (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 26-28 (Oct. 2007), p. 1299-1302 
    Details
    ISSN: 1662-8985
    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: The strain aging of heavily drawn pearlitic steel wires has been studied by means ofelectrical resistivity mearsurement. The kinetic of the early stage of strain aging after being drawn totrue strain 2.89 is described by a Johnson-Mehl equation. The apparent activation energy ΔH isestimated as 31.7kJ/mol. The results indicate that the mechanism of the early stage of strain aging ofheavily drawn pearlitic steel correlates with the formation of interstitial solute atoms-vacancy pairs
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.26-28.1299.pdf
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    The Effect of Fiber Winding Angles on the Bending Strength of Fiber-Reinforced Plastic Rods (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 345-346 (Aug. 2007), p. 661-664 
    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: Fiber-reinforced plastics consist of fibers of high strength and modulus embedded in, orbonded to a matrix with distinct interfaces between them. Because fiber configuration plays a key rolein determining mechanical strength of fiber-reinforced plastic rods, especially bending strength offiber-reinforced plastic rods was measured and simulated numerically in variation with windingangles. Also, stress distribution in fiber-reinforced plastic rods was simulated numerically under thecondition of constant bending load to fiber-reinforced plastic rods. The measured bending strength offiber-reinforced plastic rods in variation with winding angles was different from that of simulated.The difference between measured and simulated results was due to the effect of shear stresses on thestrength of fiber-reinforced plastic rods
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.345-346.661.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    A Study on the Equipotent Switching Direct Current Potential Drop Method for theMonitoring of Piping Thinning (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 345-346 (Aug. 2007), p. 1331-1334 
    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: Flow Accelerated Corrosion (FAC) has become a hot issue because of aging of passivecomponents. Ultrasonic Technique (UT) has been adopted to inspect the secondary piping. UT,however, covers only narrow region, which results in numerous detecting points and thus takestime. In this paper, we suggested a Wide Range Monitoring (WiRM) concept with EquipotentSwitching Direct Current Potential Drop (S-DCPD) method to monitor the thickness of piping.Since the DCPD method covers area, not a point, it needs less monitoring points. We use the SDCPDmethod to screen the candidate area to monitor. Based on the monitoring results, we candetermine the inspection area. To improve the applicability to the piping system, we suggested theEquipotent concept, which eliminates the leakage current. Finite element analysis results anddeveloped resistance model are presented for the simple analysis to describe the wall thinning byDCPD signals. And also validation test results are presented, from which we can identify theconsistency of the model and the experiment
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.345-346.1331.pdf
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Fatigue Strength Evaluation of Load-Carrying Fillet Weldments under Out-of-Plane Bending Load Using Structural Stress Method (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 2069-2072 
    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: Two types of load carrying fillet weldment, which are typical weld joints in ship structures, wereexamined under out-of-plane bending load by using structural stress approach. Finite element analyses usingboth solid and shell elements models have been performed for the assessment of fatigue strength. Basis forthe derivation of structural stress method is discussed in detail. The calculated structural stress values for thefatigue strength evaluation of load carrying fillet weldments are independent of mesh size. In this study,drawbacks and doubts associated with applying the structural method such as the guidance of virtual nodemethod and the application of three-dimensional equilibrium condition for solid model have been discussedaccompanied by various case studies. In order to solve the problem of the solid model, the alternative methodfor solid model by using the equilibrium condition of the nodal force has been introduced
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.2069.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Microscopic Three-Dimensional Imaging Theory Based on RIKES (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 364-366 (Dec. 2007), p. 1089-1094 
    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 novel nonlinear confocal microscopic imaging system based on Raman induced Kerreffect spectroscopy (RIKES) is presented in this paper. The three-dimensional (3-D) microscopicimaging theory is derived with the Fourier imaging theory and nonlinear optical principle. Theimpact of RIKES on the spatial resolution and imaging properties of confocal microscopic imagingsystem has been analyzed in detail by the imaging theory. It’s proved that the RIKES nonlinearmicroscopic imaging system can effectively improve the imaging contrast and provide morecharacteristic information on Raman spectrum and optical nonlinear Kerr effect, thus greatlyimproving the imaging quality of confocal microscopic imaging system. It’s shown that the spatialresolution of RIKES confocal microscopic imaging system is higher than that of two-photonconfocal microscopic imaging system
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.364-366.1089.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Fast Photoacoustic System Based on an Acoustic Lens and the Peak Detection Technology (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 364-366 (Dec. 2007), p. 1157-1161 
    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 fast photo-acoustic (PA) imaging system was developed and tested on phantomsample, which consists of an acoustic lens，a multi-element linear transducer array, and the peakdetection circuit. The multi-element linear transducer array consists of 64 elements. By utilizing anacoustic lens, the PA signals generated from the sample are imaged and detected by a multi-elementlinear transducer array, which directly changes the PA signals into the homologous electronicsignals. Thus we can map the image more rapidly, with the peak detection circuit, which wasdesigned specially. Compared to other exiting technology and algorithm, the PA imaging systembased on an acoustic lens and the peak detection technology was characterized with speediness andreal-time. The images reconstructed in this experiment have high definition and resolution，andmay have potential for developing an appliance for clinical diagnosis
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.364-366.1157.pdf
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