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| 1 | Calibration of the simulation parameters of the particulate materials in film mixed materials显示文摘In order to obtain accurate contact parameters of a particulate material in residual film mixture collected by cotton field machine in Xinjiang,the angle of repose test and inclined plane test were carried out.In the tests,the angles of repose of the particulate material with the water content of(6.26±1.5)%and(14.1±2.1)%were measured respectively,as well as the static sliding friction angle between the particulate material and the residual film.At the same time,the EDEM software was used to calibrate the coefficient of restitution,static friction coefficient and dynamic friction coefficient between the material and the film.Then,the second-order response model between contact parameters and the angle of repose and static sliding friction angle was constructed.In addition,the optimal contact parameters between the granular materials and the mulch were obtained by fitting the physical test data.The results indicated that the errors between the physical test results and the numerical simulation results are small.It was proved that the second-order response model could predict the repose angle of granular materials and the static sliding friction angle between granular materials and farmland film.This study could provide theoretical support for the subsequent model construction of the residual film mixture collected by the cotton field machine. | Rongqing Liang Xuegeng Chen Peng Jiang Bingcheng Zhang Hewei Meng Xiangbin Peng Za Kan | 2020 | International Journal of Agricultural and Biological Engineering2020，13，4： | 3 |
| 2 | Fe-based amorphous coating prepared using high-velocity oxygen fuel and its corrosion behavior in static lead-bismuth eutectic alloy显示文摘The Fe_(949.7)Cr_(18)Mn_(1.9)Mo_(7.4)W_(1.6)B_(15.2)C_(3.8)Si_(2) amorphous coating was deposited on T91 steel substrate by using the high-velocity oxygen fuel(HVOF)spray technique to enhance the corrosion resistance of T91 stainless steel in liquid lead-bismuth eutectic(LBE).The corrosion behavior of the T91 steel and coating exposed to oxygen-saturated LBE at 400℃ for 500 h was investigated.Results showed that the T91 substrate was severely corroded and covered by a homogeneously distributed dual-layer oxide on the interface contacted to LBE,consisting of an outer magnetite layer and an inner Fe-Cr spinel layer.Meanwhile,the amorphous coating with a high glass transition temperature(Tg=550℃)and crystallization temperature(T_(x)=600℃)exhibited dramatically enhanced thermal stability and corrosion resistance.No visible LBE penetration was observed,although small amounts of Fe_(3)O_(4),Cr_(2)O_(3),and PbO were found on the coating surface.In addition,the amorphicity and interface bonding of the coating layer remained unchanged after the LBE corrosion.The Fe-based amorphous coating can act as a stable barrier layer in liquid LBE and have great application potential for long-term service in LBE-cooled fast reactors. | Xiangyang Peng Yuhai Tang Xiangbin Ding Zhichao Lu Shuo Hou Jianming Zhou Shuyin Han Zhaoping Lü Guangyao Lu Yuan Wu | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，11： | 1 |
| 3 | Corrosion and irradiation behavior of Fe-based amorphous coating in lead-bismuth eutectic liquids显示文摘Lead-bismuth eutectics (LBE) have considerable potential as a candidate material for accelerator-driven sub-critical systems(ADS).However,LBE corrosion and irradiation damage are two urgent challenges remaining to be solved for impellers of primary pumps.In this study,we have explored the possibility of using Fe-based amorphous coatings to overcome LBE corrosion and concurrently to sustain irradiation damage.Specifically,the Fe_(54)Cr_(18)Mo_(2)Zr_(8)B_(18)amorphous coating was prepared by high-velocity oxygen-fuel (HVOF) spraying on 316L steel and exposed to saturated oxygen static LBE for 500 h at 400℃.The coating with high thermal stability (T_(g)=615℃ and T_(x)=660℃) effectively prevented the substrate steel from being corroded by LBE owing to its unique long-range disordered atomic packing.The coating also exhibited strong irradiation resistance when being subjected to 45 dpa (displacement per atom) Au ion irradiation at room temperature,with no sign of crystallization even at the maximum implantation depth of 300 nm.Consequently,the hardness of the coatings before and after irradiation increased slightly.The current findings shed new insights into understanding corrosion mechanism and irradiation behavior of amorphous solids in LBE and expand the application range of amorphous materials. | LU ZhiChao PENG Xiang Yang TANG YuHai HAN ShuYin WU Yuan FU EnGang DING XiangBin HOU Shuo LU GuangYao CAO PeiPei ZHANG YiBo LIU XiongJun MA Dong WANG Hui JIANG SuiHe LU ZhaoPing | 2022 | Science China(Technological Sciences)2022，65，2： | 1 |
| 4 | In-situ stress of coal reservoirs in the Zhengzhuang area of the southern Qinshui Basin and its effects on coalbed methane development显示文摘In-situ stress is a critical factor influencing the permeability of coal reservoirs and the production capacity of coalbed methane(CBM)wells.Accurate prediction of in-situ stress and investigation of its influence on coal reservoir permeability and production capacity are significant for CBM development.This study investigated the CBM development zone in the Zhengzhuang area of the Qinshui Basin.According to the low mechanical strength of coal reservoirs,this study derived a calculation model of the in-situ stress of coal reservoirs based on the multi-loop hydraulic fracturing method and analyzed the impacts of initial fractures on the calculated results.Moreover,by combining the data such as the in-situ stress,permeability,and drainage and recovery data of CBM wells,this study revealed the spatial distribution patterns of the current in-situ stress of the coal reservoirs and discussed the impacts of the insitu stress on the permeability and production capacity.The results are as follows.(1)Under given fracturing pressure,longer initial fractures are associated with higher calculated maximum horizontal principal stress values.Therefore,ignoring the effects of the initial fractures will cause the calculated values of the in-situ stress to be less than the actual values.(2)As the burial depth increases,the fracturing pressure,closure pressure,and the maximum and minimum horizontal principal stress of the coal reservoirs in the Zhengzhuang area constantly increase.The average gradients of the maximum and minimum horizontal principal stress are 3.17 MPa/100 m and 2.05 MPa/100 m,respectively.(3)Coal reservoir permeability is significantly controlled by the magnitude and state of the current in-situ stress.The coal reservoir permeability decreases exponentially with an increase in the effective principal stress.Moreover,a low lateral pressure coefficient(less than 1)is associated with minor horizontal compressive effects and high coal reservoir permeability.(4)Under similar conditions,such as resource endowments,CBM well capacity is higher in primary structural coal regions with moderate paleotectonic stress modification,low current in-situ stress,and lateral pressure coefficient of less than 1. | Peng Zhang Ya Meng Chaoying Liu Yuanling Guo Xiangbin Yan Lixue Cai Zhe Cheng | 2023 | Energy Geoscience2023，4，2： | 0 |
| 5 | Effect of SOD_M on Protective Enzymes in Leaves of Rice during Filling Period显示文摘[Objective] This study aimed to investigate the effect of superoxide dismutase mimics(SODM) on protective enzyme activities of rice during filling period.[Method] Hybrid rice and conventional rice varieties were used as experimental materials and sprayed with SODM.Activities of protective enzymes and contents of ASA,MDA,H2O2 and O-2 in rice leaves were determined.[Result] SODM can significantly increase SOD,POD and CAT activities in leaves of rice during filling period,maintain the MDA,H2O2 and O-2 contents at relatively low levels,and reduce rice peroxidation.[Conclusion] SODM enhances the activities of antioxidant protective enzymes in plants and the ability to scavenge reactive oxygen free radicals,thereby delaying the senescence of rice and enhancing the ability of photosynthesis in the middle to late filling period,which is conducive to improve the yield and quality of rice. | Hui ZHAO Zhanlin WANG Peng GAO Xiangbin MU Jidao DU | 2012 | Agricultural Biotechnology2012，1，3： | 0 |
| 6 | Fully-exposed Pt clusters stabilized on Sn-decorated nanodiamond/graphene hybrid support for efficient ethylbenzene direct dehydrogenation显示文摘The pursuit of energy conservation and environmental protection has always been a hot topic in the catalytic fields,which is inseparable from the rational designing of efficient catalysts and an in-depth understanding of the catalytic reaction mechanism.In this work,fully-exposed Pt clusters were fabricated on the atomically dispersed Sn decorated nanodiamond/graphene(Sn-ND@G)hybrid support and employed for direct dehydrogenation(DDH)of ethylbenzene(EB)to styrene(ST).The detailed structural characterizations revealed the fully-exposed Pt clusters were stabilized on Sn-ND@G,assisted by the spatial separation of atomically dispersed Sn species.The as-prepared Pt/Sn-ND@G catalyst showed enhanced ST yield(136.2 molEB·molpt-1·h-1 EB conversion rate and 99.7%ST selectivity)and robust long-term stability at 500℃for the EB DDH reaction,compared with the traditional ND@G supported Pt nanoparticle catalyst(Pt/ND@G).The ST prefers to desorb from the fully-exposed Pt clusters,resulting in the enhanced DDH catalytic performance of the Pt/Sn-ND@G catalyst.The present work paves a new way for designing highly dispersed and stable supported metal catalysts for DDH reactions. | Linlin Wang Xuetao Qin Ting Sun Xiangbin Cai Mi Peng Zhimin Jia Xiaowen Chen Ning Wang Jiangyong Diao Hongyang Liu Ding Ma | 2022 | Nano Research2022，15，12： | 0 |
| 7 | Generating a reporter mouse line marking medium spiny neurons in the developing striatum driven by Arpp21 cis-regulatory elements显示文摘The striatum, as the primary input nucleus in the basal ganglion,plays an important role in neural circuits crucial for the control of critical motivation, motor planning and procedural learning(Kreitzer and Malenka, 2008). Most cells in the striatum are GABAergic, including a large population (90%-95%) of medium spiny neurons (MSNs) and a small population of interneurons. | Pan Chen Xiangbin Ruan Yongqiang Chen Shilong Chu Kunlun Mo Chao Wu Wei Liu Bin Yin Junjie Zhou Liang Li Lin Hou Jiangang Yuan Boqin Qiang Jiekai Chen Pengcheng Shu Xiaozhong Peng | 2018 | Journal of Genetics and Genomics2018，45，12： | 0 |
| 8 | The sex determination gene doublesex is required during adulthood to maintain sexual orientation显示文摘Gender differences in behavior are prevalent among animal kingdoms. The causal links among a particular gene, neural circuitry, and gendered behaviors have long been of particular interest in neuroscience. The fruit fly, Drosophila melanogaster, is a wonderful animal model with fruitful genetic tools to tackle these questions(Guo et al., 2019). It has been found that two sex determination genes,fruitless(fru) and doublesex(dsx), jointly govern the sex differences in the nervous system that regulate the male-specific courtship behavior(Burtis and Baker, 1989;Ito et al., 1996;Ryner et al. | Qionglin Peng Jiangtao Chen Xiangbin Su Rong Wang Caihong Han Yufeng Pan | 2022 | Journal of Genetics and Genomics2022，49，2： | 0 |
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