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344篇 您的检索式:作者名="Wrana"
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1Laboratory pull-out tests on fully grouted rock bolts and cable bolts:Results and lessons learned显示文摘Laboratory pull-out tests were conducted on the following rock bolts and cable bolts:steel rebars,smooth steel bars,fiberglass reinforced polymer threaded bolts,flexible cable bolts,IR5/IN special cable bolts and Mini-cage cable bolts.The diameter of the tested bolts was between 16 mm and 26 mm.The bolts were grouted in a sandstone sample using resin or cement grouts.The tests were conducted under either constant radial stiffness or constant confining pressure boundary conditions applied on the outer surface of the rock sample.In most tests,the rate of displacement was about 0.02 mm/s.The tests were performed using a pull-out bench that allows testing a wide range of parameters.This paper provides an extensive database of laboratory pull-out test results and confirms the influence of the confining pressure and the embedment length on the pull-out response(rock bolts and cable bolts).It also highlights the sensitivity of the results to the operating conditions and to the behavior of the sample as a whole,which cannot be neglected when the test results are used to assess the bolt-grout or the grouterock interface.Isabelle Thenevin Laura Blanco-Martín Faouzi Hadj-Hassen Jacques Schleifer Zbigniew Lubosik Aleksander Wrana 2017Journal of Rock Mechanics and Geotechnical Engineering2017,9,5:14
2Functional Genomics Reveals a BMP-Driven Mesenchymal-to-Epithelial Transition in the Initiation of Somatic Cell Reprogramming显示文摘Payman Samavarchi-Tehrani Azadeh Golipour Laurent David Hoon-ki Sung Tobias A. Beyer Alessandro Datti Knut Woltjen Andras Nagy Jeffrey L. Wrana 2010Cell Stem Cell2010,,1:3
3Influence of longwall gateroad convergence on the process of mine ventilation network-model tests显示文摘Hard coal mines are required to constantly ventilate mine workings to ensure that the air composition is at a certain humidity and temperature level that is comfortable for underground mine workers,especially in deep deposits.All underground workings,which are part of the mine ventilation network,should be ventilated in a way that allows maintaining proper oxygen concentration not lower than 19%(by volume),and limits concentration of gases in the air such as methane,carbon monoxide or carbon dioxide.The air flow in the mine ventilation network may be disturbed due to the natural convergence(deformation)and lead to change in its original cross-section.Reducing the cross-sectional area of the mining excavation causes local resistances in the air flow and changes in aerodynamic potentials,which leads to emergency states in the mine ventilation network.This paper presents the results of numerical simulations of the influence of gateroad convergence on the ventilation process of a selected part of the mine ventilation network.The gateroad convergence was modelled with the finite element software PHASE 2.The influence of changes in the cross-sectional area of the gateroad on the ventilation process was carried out using the computational fluid dynamics software Ansys-Fluent.Andrzej Walentek Tomasz Janoszek Stanis?aw Prusek Aleksander Wrana 2019International Journal of Mining Science and Technology2019,29,4:2
4Signaling and endocytosis: a team effort for cell migration显示文摘Le Roy C Wrana J L 2005Dev Cell2005,9,2:1
5眼见为实: 在内脏上皮的 Wnt3 本地化显示文摘Alex Gregorieff Jeffrey L Wrana 2016Cell Research2016,26,5:1
6TGF-beta and the smad signal transduction pathway显示文摘MEHRA A WRANA J L 2002Biochem Cell Biol2002,80,5:1
7Signal transduction by the TGF-β superfamily 显示文摘 Wrana JL 2002Science2002,296,5537:1
8Mads and Smads in TGF beta signaling显示文摘Attisano L Wrana JL 1998Curr Opin Cell Biol1998,10,:1
9Mechanism of activation of the TGF-beat receptor显示文摘Wrana JL Attisano L Wieser R 1994Nature1994,370,:1
10Endoglin is an accessory protein that interacts with the signaling receptor complex of multiple members of transforming growth factor-beta superfamily显示文摘Barbara NP Wrana JL Letarte M 1999J Biol Chem1999,274,2:1
11Therban(R)-the high performance elastomer for the new millennium显示文摘Wrana C Reinartz K Winkelbach H R 2001Macromolecular materials and engineering2001,286,11:1
12The smad pathway cytokine and growth显示文摘Wrana JL Attisano L 2000Factor Rew2000,122,11:1
13Measurement and molecular modeling of rolling resistance in tire treads显示文摘Wrana C Eisele U Kelbch S 2000Kautschuk und Gummi Kunststoffe2000,53,3:1
14Mechanism of activation of the TGF-beta receptor显示文摘 Attisano L Wieser R 1994Nature1994,370,6488:1
15Smads as transcriptional co - modulators显示文摘Attisano L Wrana JL 2000Curr Opin Cell Biol2000,12,2:1
16The smad pathway显示文摘Wrana JL Attisano L 2000Cytokine Growth Factor Rev2000,11,12:1
17Therban-the High Performance Elastomer for the New Millennium显示文摘Wrana C Reinartz K Winkelbach H R 0,,11:1
18Signal transduction by the TGF-beta superfamily 显示文摘Attisano L Wrana JL 2002Science2002,296,5573:1
19Mechanism of activation of the TGFβ receptor显示文摘Wrana J L Attisano L A Wieser R et ol 1994Nature1994,370,4:1
20Signal transduction by the TGF-beta super-family显示文摘Attisano L Wrana JL 2002Science2002,296,5573:1
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