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生物质成型燃料真空相变锅炉的设计与试验

工业炉 2024年第4期46卷 15-19页

作者：李秀华王海亮孙海权何芳山东科技职业学院科研与专利管理中心潍坊理工学院新能源工程学院山东理工大学交通与车辆工程学院

针对生物质成型燃料锅炉高温燃烧引起的排放问题，研制了新型生物质成型燃料真空相变锅炉。该锅炉的燃烧器和热水机组均采用真空夹层，高效换热，有效降低燃烧室的固相燃烧温度；锅炉出口设置烟气二次换热器，减少了热量损失。对其热性... 详细信息

针对生物质成型燃料锅炉高温燃烧引起的排放问题，研制了新型生物质成型燃料真空相变锅炉。该锅炉的燃烧器和热水机组均采用真空夹层，高效换热，有效降低燃烧室的固相燃烧温度；锅炉出口设置烟气二次换热器，减少了热量损失。对其热性能以及排放特性进行检测，结果表明：该锅炉热效率可达90.4%；室外排烟温度降至64℃；烟气中NO质量浓度平均值为145 mg/m3,CO质量浓度平均值为195 mg/m3，烟尘质量浓度平均值为9.30 mg/m3，满足国家对工业锅炉在重点地区及地方的排放要求。

关键词：生物质锅炉真空相变热性能排放特性

A comprehensive study on Li_(4)Si_(1-x)Ti_(x)O_(4) ceramics for advanced tritium breeders

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Journal of Advanced Ceramics 2020年第5期9卷 629-640页

作者： Yichao GONG Lin LIU Jianqi QI Mao YANG Junjie LI hailiang wang Hao GUO Guojun ZHANG Tiecheng LU School of Materials Science&Engineering Xi’an University of TechnologyXi’an 710048China College of Physical Science and Technology Sichuan UniversityChengdu 610064China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China

Hetero-element doped lithium orthosilicates have been considered as advanced tritium breeders due to the superior *** this work,Li_(4)Si_(1-x)Ti_(x)O_(4) ceramics were prepared by proprietary hydrothermal process and multistage reactive *** reaction mechanism of Li_(4)Si_(1-x)Ti_(x)O_(4) was put *** and SEM analyses indicate that insertion of Ti leads to lattice expansion,which promotes the grain growth and changes the fracture *** compressive tests show that the crush load increases almost four times by increasing x from 0 to ***,the thermal conductivity and ionic conductivity are the best when x=0.05 and x=0.1,*** cycling stability of Li_(4)Si_(1-x)Ti_(x)O_(4) pebbles was further appraised through investigating the changes of microstructure and crush *** undergoing thermal cycling,the Li_(4)Si_(1-x)Ti_(x)O_(4) still show higher crush load compared with Li_(4)SiO_(4),despite Ti segregation in some *** x=0.05 sample exhibits excellent thermal cycling *** summary,proper amount of Ti doping can improve the crush load,thermal and ionic conductivity,and thermal cycling stability of Li_(4)SiO_(4).

关键词： tritium ceramic breeders Li_(4)Si_(1-x)Ti_(x)O_(4) solid solutions crush load conductivity thermal cycling

新型降脂药物PCSK9抑制剂在动脉粥样硬化心血管疾病的研究现状

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药学研究 2024年第5期43卷 487-494页

作者：马国文刘世昌王海亮姜文妍王学健山东第二医科大学药学院山东潍坊261053 潍坊市人民医院山东潍坊261041 潍坊市精神卫生中心山东潍坊261072

动脉粥样硬化是许多心血管疾病的早期病理改变,脂质代谢紊乱是动脉粥样硬化性心血管疾病(ASCVD)最重要的危险因素之一。前蛋白转化酶枯草杆菌蛋白酶/kexin 9型(PCSK9)是血脂调节的关键因子,可以通过与低密度脂蛋白受体(LDLR)结合,降解L... 详细信息

动脉粥样硬化是许多心血管疾病的早期病理改变,脂质代谢紊乱是动脉粥样硬化性心血管疾病(ASCVD)最重要的危险因素之一。前蛋白转化酶枯草杆菌蛋白酶/kexin 9型(PCSK9)是血脂调节的关键因子,可以通过与低密度脂蛋白受体(LDLR)结合,降解LDLR从而阻止低密度脂蛋白的清除,导致低密度脂蛋白胆固醇(LDL-C)水平升高,增加心血管疾病的风险。PCSK9也参与炎症细胞因子的生成、内皮功能障碍和动脉粥样硬化斑块的形成。多项研究显示,PCSK9是治疗ASCVD的一个有希望的新靶点。PCSK9抑制剂是目前治疗高胆固醇血症的新型药物。本文就PCSK9抑制剂在动脉粥样硬化中的作用及药物研究进展做一综述,为临床用药提供参考。

关键词：前蛋白转化酶枯草杆菌蛋白酶/kexin 9型抑制剂动脉粥样硬化人前蛋白转化酶枯草溶菌素9 动脉粥样硬化性心血管疾病胆固醇低密度脂蛋白胆固醇

A bio-inspired O2-tolerant catalytic CO2 reduction electrode

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Science Bulletin 2019年第24期64卷 1890-1895页

作者： Xu Lu Zhan Jiang Xiaolei Yuan Yueshen Wu Richard Malpass-Evans Yiren Zhong Yongye Liang Neil BMcKeown hailiang wang Department of Chemistry Yale UniversityNew HavenCT 06520USA Energy Sciences Institute Yale UniversityWest HavenCT 06516USA Department of Materials Science and Engineering Shenzhen Key Laboratory of Printed Organic ElectronicsSouthern University of Science and TechnologyShenzhen 518055China Institute of Functional Nano and Soft Materials Jiangsu Key Laboratory for Carbon-Based Functional Materiab and DevicesSoochow UniversitySuzhou 215123China EastChem School of ChemistryUniversity of EdinburghEdinburgh EH93FJUK

The electrochemical reduction of CO2 to give CO in the presence of O2 would allow the direct valorization of flue gases from fossil fuel combustion and of CO2 captured from air. However, it is a challenging task because O2 reduction is thermodynamically favored over that of CO2. 5% O2 in CO2 near catalyst surface is sufficient to completely inhibit the CO2 reduction reaction. Here we report an O2-tolerant catalytic CO2 reduction electrode inspired by part of the natural photosynthesis unit. The electrode comprises of heterogenized cobalt phthalocyanine molecules serving as the cathode catalyst with >95% Faradaic efficiency(FE) for CO2 reduction to CO coated with a polymer of intrinsic microporosity that works as a CO2-selective layer with a CO2/O2 selectivity of $20. Integrated into a flow electrolytic cell, the hybrid electrode operating with a CO2 feed gas containing 5% O2 exhibits a FECOof 75.9% with a total current density of 27.3 mA/cm^2 at a cell voltage of 3.1 V. A FECO of 49.7% can be retained when the O2 fraction increases to 20%. Stable operation for 18 h is demonstrated. The electrochemical performance and O2 tolerance can be further enhanced by introducing cyano and nitro substituents to the phthalocyanine ligand.

关键词： Electrochemical CO2 reduction O2 tolerance Gas separation Polymer of intrinsic microporosity Cooperative catalysis

Effects of thawing-induced softening on fracture behaviors of frozen rock

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第3期16卷 979-989页

作者： Ting wang hailiang Jia Qiang Sun Xianjun Tan Liyun Tang College of Geology and Environment Xi’an University of Science and TechnologyXi’an710054China College of Architecture and Civil Engineering Xi’an University of Science and TechnologyXi’an710054China State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430064China

Due to the presence of ice and unfrozen water in pores of frozen rock,the rock fracture behaviors are susceptible to *** this study,the potential thawing-induced softening effects on the fracture behaviors of frozen rock is evaluated by testing the tension fracture toughness(KIC)of frozen rock at different temperatures(i.e.-20℃,-15℃,-12℃,-10℃,-8℃,-6℃,-4℃,-2℃,and 0℃).Acoustic emission(AE)and digital image correlation(DIC)methods are utilized to analyze the microcrack propagation during *** melting of pore ice is measured using nuclear magnetic resonance(NMR)*** results indicate that:(1)The KIC of frozen rock decreases moderately between-20℃ and-4℃,and rapidly between-4℃ and 0℃.(2)At-20℃ to-4℃,the fracturing process,deduced from the DIC results at the notch tip,exhibits three stages:elastic deformation,microcrack propagation and microcrack ***,at-4℃e0℃,only the latter two stages are observed.(3)At-4℃e0℃,the AE activities during fracturing are less than that at-20℃ to-4℃,while more small events are reported.(4)The NMR results demonstrate a reverse variation trend in pore ice content with increasing temperature,that is,a moderate decrease is followed by a sharp decrease and-4℃ is exactly the critical ***,we interpret the thawing-induced softening effect by linking the evolution in microscopic structure of frozen rock with its macroscopic fracture behaviors as follow:from-20℃ to-4℃,the thickening of the unfrozen water film diminishes the cementation strength between ice and rock skeleton,leading to the decrease in fracture ***-4℃ to 0℃,the cementation effect of ice almost vanishes,and the filling effect of pore ice is reduced significantly,which facilitates microcrack propagation and thus the easier fracture of frozen rocks.

关键词： Frozen sandstone Different thawing temperature Fracture toughness Microcrack propagation process Unfrozen water content

Identification of aircraft longitudinal aerodynamic parameters using an online corrective test for wind tunnel virtual flight

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Chinese Journal of Aeronautics 2024年第9期37卷 261-275页

作者： Shang TAI Chen BU Yanling wang Ting YUE hailiang LIU Lixin wang School of Aeronautical Science and Engineering Beihang UniversityBeijing 100191China AVIC Aerodynamics Research Institute Harbin 150001China

The identification of aerodynamic parameters is accomplished through the test data of the dynamic movement of scaled aircraft models flying dynamically in wind tunnel,which can real-ize the accurate acquisition of the aerodynamic model of the aircraft in the preliminary stage for aircraft design,and it is of great significance for improving the efficiency of aircraft ***-ever,the translational motion of the test model in the wind tunnel virtual flight is subject to con-straints that result in distinct flight dynamics compared to free *** constraints have implications for the accuracy of aerodynamic derivatives obtained through the identification of wind tunnel test *** this issue in mind,the research studies the differences in longitudinal dynamic characteristics between unconstrained free flight and wind tunnel virtual flight,and inno-vatively proposes an online correction test based wind tunnel virtual flight test *** lon-gitudinal trajectory and velocity changes of the model are solved online by the aerodynamic forces measured during the test,and then the coupled relationship between aircraft translation and rota-tion is used to correct the model's pitch attitude motion *** the first time,the problem of solving the data approximation for free flight has been solved,eliminating the difference between the dynamics of wind tunnel virtual flight and free flight,and improving the accuracy of the aero-dynamic derivative identification *** experiment's findings show that accurate aerodynamic derivatives can be identified based on the online correction test data,and the observed behaviour of the identified motion model has similarities to that of the free flight motion model.

关键词： Wind tunnels Displacement constraints Online solution Flightcontrol law Aerodynamic parameter identification

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无镍化耐候箱板铜脆缺陷的分析与控制

山西冶金 2024年第7期47卷 161-163页

作者：寻之安王海梁张纪帅顼鑫山东钢铁集团永锋临港有限公司山东临沂276007 日照钢铁控股集团有限公司山东日照276806

含Cu耐候箱板在成分无镍化生产过程中易产生“铜脆”缺陷,采用金相显微镜与扫描电镜观察铜脆缺陷形貌,分析缺陷产生原因并提出改善措施。通过优化成分、轧钢等工艺,表面铜脆缺陷得到改善,实现了无镍化耐候箱板工业化稳定生产。

关键词：无镍耐候箱板铜脆成分轧制工艺

Tube-based robust reinforcement learning for autonomous maneuver decision for UCAVs

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Chinese Journal of Aeronautics 2024年第7期37卷 391-405页

作者： Lixin wang Sizhuang ZHENG Haiyin PIAO Changqian LU Ting YUE hailiang LIU School of Aeronautical Science and Engineering Beihang UniversityBeijing 100191China Shenyang Aircraft Design&Research Institute Shenyang 110035China

Reinforcement Learning(RL)algorithms enhance intelligence of air combat AutonomousManeuver Decision(AMD)policy,but they may underperform in target combat environmentswith *** enhance the robustness of the AMD strategy learned by RL,thisstudy proposes a Tube-based Robust RL(TRRL)***,this study introduces a tube todescribe reachable trajectories under disturbances,formulates a method for calculating tubes basedon sum-of-squares programming,and proposes the TRRL algorithm that enhances robustness byutilizing tube size as a quantitative ***,this study introduces offline techniques forregressing the tube size function and establishing a tube library before policy learning,aiming toeliminate complex online tube solving and reduce the computational burden during ***,an analysis of the tube library demonstrates that the mitigated AMD strategy achievesgreater robustness,as smaller tube sizes correspond to more cautious *** finding highlightsthat TRRL enhances robustness by promoting a conservative *** effectively balanceaggressiveness and robustness,the proposed TRRL algorithm introduces a“laziness factor”as aweight of ***,combat simulations in an environment with disturbances confirm thatthe AMD policy learned by the TRRL algorithm exhibits superior air combat performance comparedto selected robust RL baselines.

关键词： Air combat Autonomous maneuver decision Robust reinforcement learning Tube-based algorithm Combat simulation

厚煤层大断面沿空巷道变形破坏机理及控制技术

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建井技术 2024年第2期45卷 78-83,94页

作者：王海亮任冬冬韩卫栋黄小虎马腾新汶矿业集团(伊犁)能源开发有限责任公司一矿新疆伊宁835000 山东科技大学能源与矿业工程学院山东青岛266590

针对沿空巷道受多次采动叠加影响极易发生变形失稳破坏的难题,以某矿1505W工作面厚煤层综放开采工作面为研究背景,综合采用理论分析、现场实测、数值模拟等多种研究方法探讨分析了沿空巷道围岩失稳破坏机制,并提出了围岩“浅部、深部、... 详细信息

针对沿空巷道受多次采动叠加影响极易发生变形失稳破坏的难题,以某矿1505W工作面厚煤层综放开采工作面为研究背景,综合采用理论分析、现场实测、数值模拟等多种研究方法探讨分析了沿空巷道围岩失稳破坏机制,并提出了围岩“浅部、深部、表层”控制方案。现场试验结果表明,提出的控制方案能够使巷道浅、深部围岩形成统一的整体,有效抑制了沿空巷道围岩变形,提高了巷道的稳定性。

关键词：厚煤层大断面沿空巷道围岩变形支护优化