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| 1 | Transient temperature field of a friction pair in a HVD device of a belt conveyor显示文摘To show the distribution of a temperature field on a steel disk and to prolong the service life of a friction pair in a Hy-dro-Viscous Drive (HVD) device, a theoretical model of a transient temperature field was established, based on the theory of heat conduction. This theoretical model was solved using a finite element method. The results show that the surface temperature of the steel disk does not increase consistently as a function of the radius; the highest temperature appears short of the maximum radius. The relationship between the surface temperature and the mixed friction time is exponential. With a friction time of 15 s, the tem-perature reached 465.9 °C. Simultaneously, the internal thermal stress is larger than the yield stress of the material, causing a warping deformation of the steel disk. The largest axial deformation is 0.32 mm. The results of the experiment suggest that the de-formation is the same as that obtained from numerical simulation. Therefore, deformation of the steel disk must be considered dur-ing the study of the characteristics of a HVD. | XIE Fangwei, HOU Youfu School of Mechanical and Electrical Engineering, China University of Mining & Technology, Xuzhou 221008, China | 2010 | Mining Science and Technology2010，20，6： | 8 |
| 2 | Modeling a magneto-rheological soft starter for use with belt conveyors显示文摘The theory of magnetic circuit design, the constitutive equations of a magneto-rheological fluid, and the load properties of belt conveyors were used to design a magneto-rheological soft starter test-bed. The magnetic field distribution in the working gap was analyzed and the current-speed relationship was investigated. A mathematical model for the time response was deduced. The results show that a linear relationship between current and magnetic field is seen when the magnetic materials are not saturated and the magnetic field is uniform in the working section. The rotation speed of the driven shaft changes linearly with increasing time. The response is rapid and can be as short as milliseconds. This meets the starting requirements of belt conveyors. | Tian Zuzhi Hou Youfu | 2012 | International Journal of Mining Science and Technology2012，22，3： | 2 |
| 3 | Oil film hydrodynamic load capacity of hydro-viscous drive with variable viscosity显示文摘 | Xie Fangwei Hou Youfu | 2011 | Industrial Lubrication and Tribology2011，63，3： | 1 |
| 4 | Control strategy of disc braking systems for downward belt conveyors显示文摘Reliability of braking systems is a key requirement to ensure the safety of in using downward belt con-veyor brakes.By analyzing and comparing three commonly used braking velocity curves,we concludethat the Harrison curve is the best.Given the characteristics of a downward belt conveyor,we studiedthe control in a closed-loop velocity,a conventional PID method and an optimal PID control method.We used MATLAB/Simulink to simulate the three control methods.Our simulation results show that opti-mal PID control is especially suitable for disc braking systems.To verify the results from theoretical anal-ysis and simulation,a multifunctional test-bed was developed to simulate the braking process of a discbrake system.Our experimental results demonstrate that the optimal PID control can make the outputvelocity to follow a preset velocity correctly with only small fluctuations,meeting the requirements ofa flexible brake for a belt conveyor. | Hou Youfu Xie Fangwei Huang Fei | 2011 | Mining Science and Technology2011，21，4： | 1 |
| 5 | Design and experimental eva1- uation of a muhidisk magnetorheological fluid actuator 显示文摘 | Wang Daoming Hou Youfu | 2013 | Journal of Intelligent Material Systems and Struc- tures2013，24，5： | 1 |
| 6 | Oil film hydrodynamic load capacity of hydro-viscous drive with variable viscosity显示文摘 | XIE Fangwei HOU Youfu | 2011 | Industrial Lubrication and Tribology2011，63，3： | 1 |
| 7 | Drive Characteristicsof Viscous Oil Film Considering Temperature E fect显示文摘 | XIE Fangwei HOU Youfu YANG Ping | 2011 | Journal of fluids engineering-transactions of theASME2011，133，04： | 1 |
| 8 | Control strategy of disc braking systems for downward belt conveyors显示文摘 | Youfu Hou Fangwei Xie Fei Huang | 2011 | Mining Science and Technology (China)2011，，4： | 1 |
| 9 | Effect of Oil Film Squeezing on Hydro-viscous Drive Speed Regulating Start 显示文摘 | MENG Qingrui HOU Youfu | 2010 | Tribol- ogy International2010，，6： | 1 |
| 10 | Effects of friction disc surface groove on speed-regulating start显示文摘 | Meng Qingrui Hou Youfu | 2009 | Industrial Lubrication & Tribology2009，，6： | 1 |
| 11 | TaGW2L,a GW2-like RING finger E3 ligase,positively regulates heading date in common wheat(Triticum aestivum L.)显示文摘RING finger E3 ligases play an important role in regulating plant growth and development by mediating substrate degradation.In this study,we identified TaGW2L,encoding a Grain width and weight2(GW2)-like RING finger E3 ligase,as a novel positive regulator of heading date in wheat(Triticum aestivum L.).TaGW2L exhibited high amino acid sequence similarities with TaGW2 homoeologs,particularly in the conserved RING finger domain.Expression analysis indicated that TaGW2L was constitutively expressed in various wheat tissues.TaGW2L showed transactivation activity in yeast and could interact with the ubiquitin-conjugating enzymes E2_(s).An in vitro ubiquitination assay verified that TaGW2L possessed a similar E3 ligase activity to TaGW2.Overexpression of the TaGW2L-7A homoeolog in wheat led to a significantly earlier heading date under both natural conditions and long-day conditions.Transcriptome analysis revealed that multiple known genes positively regulating wheat heading were significantly upregulated in the TaGW2L-7A-overexpression plants compared with the wild-type control.Together,our findings shed light on the role of TaGW2L in wheat heading date and provide potential applications of TaGW2L for the adaptation improvement of crops. | Daijing Zhang Xiaoxu Zhang Wu Xu Tingting Hu Jianhui Ma Youfu Zhang Jian Hou Chenyang Hao Xueyong Zhang Tian Li | 2022 | The Crop Journal2022，10，4： | 1 |
| 12 | Design and Experimental E- valuation of a Muhidisk Magnetorheological Fluid Actuator 显示文摘 | WANG Daoming HOU Youfu | 2013 | Journal of Intelligent Material Systems and Struc-tures2013，24，5： | 1 |
| 13 | Indentation rolling resistance of belt conveyor:a special boundary element solution显示文摘 | Wang Fansheng Hou Youfu Jiang Hongqi | 2008 | Bulk Solids & Powder-Science & Technology2008，3，4： | 1 |
| 14 | Effects of friction disk surface groove on speed-regulation start 显示文摘 | Meng Qingrui Hou Youfu | 2009 | International Lubrication and Tri- bology2009，61，6： | 1 |
| 15 | Tem- perature Rise Characteristic of MR Fluid in a Multi-disc MR Clutch Under Slip Condition 显示文摘 | WANG Daoming HOU Youfu TIAN Zuzhi | 2015 | Industrial Lubrica- tion and Tribology2015，67，2： | 1 |
| 16 | TaTIP41 and TaTAP46 positively regulate drought tolerance in wheat by inhibiting PP2A activity显示文摘Drought is a major environmental stress limiting global wheat(Triticum aestivum)production.Exploring drought tolerance genes is important for improving drought adaptation in this crop.Here,we cloned and characterized TaTIP41,a novel drought tolerance gene in wheat.TaTIP41 is a putative conserved component of target of rapamycin(TOR)signaling,and the Ta TIP41 homoeologs were expressed in response to drought stress and abscisic acid(ABA).The overexpression of Ta TIP41 enhanced drought tolerance and the ABA response,including ABA-induced stomatal closure,while its downregulation using RNA interference(RNAi)had the opposite effect.Furthermore,Ta TIP41 physically interacted with TaTAP46,another conserved component of TOR signaling.Like TaTIP41,TaTAP46 positively regulated drought tolerance.Furthermore,TaTIP41 and TaTAP46 interacted with type-2A protein phosphatase(PP2A)catalytic subunits,such as TaPP2A-2,and inhibited their enzymatic activities.Silencing TaPP2A-2 improved drought tolerance in wheat.Together,our findings provide new insights into the roles of TaTIP41 and TaTAP46 in the drought tolerance and ABA response in wheat,and their potential application in improving wheat environmental adaptability. | Jianhui Ma Yuke Geng Hong Liu Mengqi Zhang Shujuan Liu Chenyang Hao Jian Hou Youfu Zhang Daijing Zhang Weijun Zhang Xueyong Zhang Tian Li | 2023 | Journal of Integrative Plant Biology2023，65，9： | 0 |
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