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Thirty-eight spider species (Arachnida: Araneae) from China, Indonesia, Japan and Vietnam

Zoological Systematics 2024年第1期49卷 4-98页

作者： Yejie Lin Shuqiang Li Haolin Mo xihao wang Institute of Zoology Chinese Academy of SciencesBeijing 100101China Key Laboratory of Wildlife Evolution and Conservation in Mountain Ecosystem of Guangxi Nanning Normal UniversityNanning 530001China Jinan Licheng No.2 High School Jinan 250109China

Four new genera in three spider families are reported, namely Langlibaitiao Lin &Li, gen. nov., of Dictynidae O. Pickard-Cambridge, 1871, with Lathys inaffecta Li, 2017(♂♀,China: Guangxi) as the type species;Huoyanluo Lin & Li, gen. nov., of Macrobunidae Petrunkevitch, 1928, with Huoyanluo ruanxiaoqi Lin & Li, sp. nov.(♂, China: Yunnan) as the type species and Gushangzao Lin & Li, gen. nov. and Gyro Lin & Li, gen. nov., of Theridiidae Sundevall, 1833, with Gushangzao shiqian Lin & Li, sp. nov.(♂♀, China: Xizang) and Gyro zeppeli Lin & Li, sp. nov.(♀, China: Yunnan) as the type species, respectively. Further 31 new species in 19 spider families are reported, including Agelenidae C.L. Koch, 1837:Troglocoelotes doul Lin & Li, sp. nov.(♀, China: Guangxi) and T. ruanxiaowu Lin & Li, ***.(♀, China: Guangxi);Dictynidae: Langlibaitiao zhangshun Lin & Li, sp. nov.(♂, China:Hainan);Hahniidae Bertkau, 1878: Hahnia zhuyifani Lin & Li, sp. nov.(♀, China: Yunnan);Liocranidae Simon, 1897: Platnick xintongi Lin & Li, sp. nov.(♂♀, China: Xizang);Macrobunidae: Funny yanqing Lin & Li, sp. nov.(♂♀, China: Xizang) and Huoyanluo zhangzezhongi Lin & Li, sp. nov.(♂, China: Yunnan);Mysmenidae Petrunkevitch, 1928:Phricotelus yangxiong Lin & Li, sp. nov.(♂♀, China: Chongqing);Nemesiidae Simon, 1889:Raveniola shixiu Lin, wang & Li, sp. nov.(♀, China: Guangxi) and R. xiezhen Lin, wang & Li,sp. nov.(♂♀, China: Yunnan);Nesticidae Simon,1894: Speleoticus sicet Lin & Li, sp. nov.(♂♀,China: Sichuan);Ochyroceratidae Fage, 1912: Speocera yiduoi Lin & Li, sp. nov.(♂, China:Guangdong);Oecobiidae Blackwall, 1862: Uroctea chenyui Lin & Li, sp. nov.(♂♀, China:Guangxi);Oonopidae Simon, 1890: Orchestina xiebao Lin & Li, sp. nov.(♀, China:Chongqing);Philodromidae Thorell, 1869: Apollophanes lujiani Lin & Li, sp. nov.(♂♀, China:Guangxi) and Psellonus dawanqu Lin & Li, sp. nov.(♂♀, China: Guangdong);Salticidae Blackwall, 1841: Coccorchestes spark Lin & Li, sp. nov.(♂♀, Indonesia, West Papua),Onomastus zhuwu

关键词： Diagnosis new combination new genus new species Asia.

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海水与高温环境对膨润土泥浆流变特性的影响研究

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现代隧道技术 2024年第1期61卷 174-181,199页

作者：周骥王希浩康松代镇洋中交隧道工程局有限公司北京100088 青岛国信胶州湾第二海底隧道有限公司青岛266000

泥水盾构在海底掘进时,配制合适的泥浆以确保其在海水入侵和高温条件下良好的流变性能和渗透特性具有重要意义。为探明高温环境与海水侵入对膨润土浆液流变性能的影响,利用博勒飞RST软固体流变仪开展一系列流变测试试验,分析高温环境与... 详细信息

泥水盾构在海底掘进时,配制合适的泥浆以确保其在海水入侵和高温条件下良好的流变性能和渗透特性具有重要意义。为探明高温环境与海水侵入对膨润土浆液流变性能的影响,利用博勒飞RST软固体流变仪开展一系列流变测试试验,分析高温环境与海水侵入条件下泥浆的流动形式与本构模型。结果表明:在高温环境下,膨润土泥浆具有明显的升温稀化特性,随着温度的升高,膨润土泥浆的流变模型未发生变化;随着海水的侵入,泥浆的保水能力和物理稳定性被削弱,并出现离析现象,膨润土泥浆近乎丧失了幂律流体与屈服性流体的流变特征,泥浆的流动形式劣化为牛顿流体;此外,电镜扫描结果显示淡水泥浆的空间结构呈结块团絮状,结块密集且相互连续,空间结构较为完整且致密;50%海水泥浆的空间结构主要以薄片形式出现,且薄片之间存在明显的空隙,局部出现离散颗粒堆积。

关键词：海底隧道泥水盾构海水侵入高温环境流变特性室内试验

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计及电动汽车引导和网络重构的配电网负荷恢复策略

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山东电力技术 2024年第8期51卷 18-26页

作者：王炜歆张露元王小君王希豪刘曌国网浙江省电力有限公司海宁市供电公司浙江海宁314400 北京交通大学北京海淀100044

灾后故障恢复场景下,城市中分散的规模化电动汽车具备可观的放电潜力,能够支撑配电网关键负荷恢复供电,减少停电损失。但电动汽车用户不属于电网或企业,需要研究如何引导电动汽车用户,实现恢复效益最大化。提出一种计及电动汽车引导和... 详细信息

灾后故障恢复场景下,城市中分散的规模化电动汽车具备可观的放电潜力,能够支撑配电网关键负荷恢复供电,减少停电损失。但电动汽车用户不属于电网或企业,需要研究如何引导电动汽车用户,实现恢复效益最大化。提出一种计及电动汽车引导和网络重构的配电网负荷恢复策略。首先,分析电动汽车用户参与配电网故障恢复的过程,进而提出影响电动汽车用户参与恢复的关键因素,建立考虑电动汽车用户偏好的引导决策模型;然后,结合配电网网络重构恢复方法,考虑潮流约束、发电资源约束和电动汽车放电约束等,建立了计及电动汽车引导和网络重构的配电网故障恢复模型;最后,通过改进的IEEE 33节点算例验证。所提方法能够有效地求解恢复策略,在恢复期间保证重要负荷供电,提升电网韧性。

关键词：电动汽车负荷恢复引导网络重构

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Microstructural evolution and strengthening mechanism of aligned steel fiber cement-based tail backfills exposed to electromagnetic induction

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International Journal of Minerals,Metallurgy and Materials 2024年第11期31卷 2390-2403页

作者： xihao Li Shuai Cao Erol Yilmaz School of Civil and Resources Engineering University of Science and Technology BeijingBeijing 100083China State Key Laboratory of High-Efficient Mining and Safety of Metal Mines of Ministry of Education University of Science and Technology BeijingBeijing 100083China Department of Civil Engineering Geotechnical DivisionRecep Tayyip Erdogan UniversityFener Rize TR53100Turkey

Cemented tailings backfill(CTB)not only boosts mining safety and cuts surface environmental pollution but also recovers ores previously retained as pillars,thereby improving resource *** use of alternative reinforcing products,such as steel fiber(SF),has continuously strengthened CTB into *** approach prevents strength decreases over time and reinforces its long-term durability,especially when mining ore in adjacent underground *** this study,various microstructure and strength tests were performed on SFCTB,considering steel fiber ratio and electromagnetic induction strength *** findings show that combining steel fibers and their distribution dominantly influences the improvement of the fill’s ***’s strength rises by fiber insertion and has an evident correlation with fiber insertion and magnetic induction *** magnetic induction strength is 3×10^(-4) T,peak uniaxial compressive stress reaches 5.73 MPa for a fiber ratio of 2.0vol%.The cracks’expansion mainly started from the specimen’s upper part,which steadily expanded downward by increasing the load until damage *** doping of steel fiber and its directional distribution delayed crack *** the doping of steel fiber was 2.0vol%,SFCTBs showed excellent ductility *** energy required for fills to reach destruction increases when steel-fiber insertion and magnetic induction strength *** study provides notional references for steel fibers as underground filling additives to enhance the fill’s durability in the course of mining operations.

关键词： electromagnetic induction steel fiber cemented tailings backfill strength microstructure

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Registration system reform and initial public offering ownership preference:Evidence from China

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China Journal of Accounting Research 2024年第1期17卷 74-95页

作者： xihao Wu Di Zhang Zhongxin Wu International Business School Hainan UniversityChina

Whether registration system reform(RSR)can curb administrative intervention and create a fair market environment has long been a concern in *** explore this issue from the perspective of the initial public offering(IPO)preference based on the entropy balancing method,and findings are as ***,an IPO ownership preference exists under approval *** is,state-owned enterprises(SOEs)are more likely than private enterprises to obtain IPO ***,RSR significantly changes this preference,especially for non-politically connected private ***,the post-IPO market performance of SOEs is inferior to that of private enterprises under approval system,thus excluding the view that approval is prioritized for SOEs because of superior ***,compared with SOEs,private enterprises are more likely to switch the issuance system from approval system to registration system;this change makes it easier for them to obtain IPO approval,indicating that private enterprise owners perceive the registration channel to be ***,the effect of RSR on IPO ownership preference mainly occurs in companies in three major urban agglomerations in China—the Pearl River Delta,the Yangtze River Delta,and the Beijing–Tian jin–Hebei region—and in technology-intensive ***,our findings reveal that RSR cultivates a fairer IPO approval process.

关键词： Registration system reform Administrative intervention Approval system IPO ownership preference

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Base editor-mediated large-scale screening of functional mutations in bacteria for industrial phenotypes

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Science China(Life Sciences) 2024年第5期67卷 1051-1060页

作者： Yaomeng Yuan xihao Liao Shuang Li Xin-Hui Xing Chong Zhang MOE Key Laboratory for Industrial Biocatalysis Institute of Biochemical EngineeringDepartment of Chemical EngineeringTsinghua UniversityBeijing 100084China Institute of Biopharmaceutical and Health Engineering Tsinghua Shenzhen International Graduate SchoolShenzhen 518055China Institute of Biomedical Health Technology and Engineering Shenzhen Bay LaboratoryShenzhen 440300China Center for Synthetic and Systems Biology Tsinghua UniversityBeijing 100084China

Base editing,the targeted introduction of point mutations into cellular DNA,holds promise for improving genome-scale functional genome screening to single-nucleotide *** efforts in prokaryotes,however,remain confined to loss-of-function screens using the premature stop codons-mediated gene inactivation library,which falls far short of fully releasing the potential of base ***,we developed a base editor-mediated functional single nucleotide variant screening pipeline in Escherichia *** constructed a library with 31,123 sgRNAs targeting 462 stress response-related genes in ***,and screened for adaptive mutations under isobutanol and furfural selective *** by the screening results,we successfully identified several known and novel functional *** pipeline might be expanded to the optimization of other phenotypes or the strain engineering in other microorganisms.

关键词： base editor high-throughput large-scale screening Escherichia coli functional mutation

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The Study of Detection for Longitudinal Rip of Coal Conveyor Belt Based on MATLAB

The Study of Detection for Longitudinal Rip of Coal Conveyor...

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第32届中国控制与决策会议

作者： XiaoDan Ren Jing Wen xihao wang YanLing Lan ZhiYing Lin Electrical Engineering Department Inner Mongolia Technical College of Mechanics and Electrics Hohhot Vocational College Inner Mongolia University

Conveyor is one of the important mining equipment in the coal mine and the belt is the key component of the *** the belt is torn longitudinally,if the measures are not taken in time,the entire conveyor belt will be torn completely,which will cause serious economic *** solve this problem,this paper studies a method to detect longitudinal rip of coal conveyor belt by applying MATLAB and knowledge of image *** extracting the longitudinal rip part of the image,combining with edge detection,then calculating the area of the longitudinal rip part with a new algorithm,at last comparing this area with the minimum area of the longitudinal rip set by system,it can be judged whether the belt has been longitudinally *** control signal can be provided to the control equipment to prevent the conveyor belt from continuing to be torn.

关键词： MATLAB Conveyor Belt Longitudinal Rip Image Processing Edge Detection Area Algorithm

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Design of Bottle Cap Detection System Based on Image Processing

Design of Bottle Cap Detection System Based on Image Process...

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第32届中国控制与决策会议

作者： XiaoDan Ren Jing Wen YanLing Lan TianKai Li xihao wang Electrical Engineering Department Inner Mongolia Technical College of Mechanics and Electrics Hohhot Vocational College Inner Mongolia University

In order to realize the automatic detection and screening of defective caps,this paper is based on machine vision to realize the automatic detection of caps on conveyor belts running at high *** method of deblurring enhancement of dynamic bottle cap image is researched to reduce the image blur caused by high-speed *** sharpening process based on the prewitt method is applied to the dynamic image,which effectively solves the problem of virtual image of bottle cap in high-speed operation,and greatly improves the accuracy and rapidity of system *** on the characteristics of the difference between the color of the bottle cap and the color of the conveyor belt,the collected color pictures are processed by gray binarization,filtering,shifting,and difference processing,and the result of whether the bottle cap to be tested is qualified is obtained,and the control function of the bottle cap is realized through the serial port interface *** experimental verification,the accuracy of the design for the judgment of bottle caps is 99.56%,and the number of caps can be detected and processed in about 800 per minute.

关键词： Image Detection Sharpening Process Noise Reduction Color Difference Matrix Subtraction

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适用高比例分布式光伏接入的配电网多级保护优化配置方案

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电力系统自动化 2023年第22期47卷 55-65页

作者：韦明杰王聪博余越梁英王熙皓电网安全全国重点实验室(中国电力科学研究院有限公司) 北京市100192

高比例分布式光伏接入配电网使系统的正常和故障电流以及特征的线性化发生显著改变,传统保护难以适应。从实施角度,基于本地信息的保护依然是兼具经济性和实用性的保护实现方式。文中阐述并量化分析了光伏接入对配电网阶段式过流保护的... 详细信息

高比例分布式光伏接入配电网使系统的正常和故障电流以及特征的线性化发生显著改变,传统保护难以适应。从实施角度,基于本地信息的保护依然是兼具经济性和实用性的保护实现方式。文中阐述并量化分析了光伏接入对配电网阶段式过流保护的影响,并提出了适应于光伏助增作用的I段保护复合判据,以及可克服光伏汲出作用的保护配合策略。进一步分析了其有效边界对光伏接入约束的要求。在此基础上,提出了多级保护配置及与自动装置的配合方案,以较小的改造代价实现了对高比例光伏不同接入和运行工况的广泛适应性。仿真结果验证了所提保护技术对光伏接入的适应性,同时也验证了光伏接入对保护方案的影响边界。

关键词：光伏配电网保护并网约束

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卸荷条件下冻结砂岩力学性质及损伤本构模型研究

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岩石力学与工程学报 2024年第2期43卷 495-509页

作者：董西好刘帅刘平西安科技大学建筑与土木工程学院陕西西安710054 西安科技大学西部矿井开采及灾害防治教育部重点实验室陕西西安710054

为探究低温软岩卸荷力学性质和损伤特性,采用GCTS低温岩石三轴仪对冻结砂岩(温度-5℃,-10℃和-15℃)进行不同初始围压和不同卸荷速率下的加卸载试验,并与常规加载试验相对比,通过获取全过程应力–应变曲线分析卸荷冻结砂岩的力学性能与... 详细信息

为探究低温软岩卸荷力学性质和损伤特性,采用GCTS低温岩石三轴仪对冻结砂岩(温度-5℃,-10℃和-15℃)进行不同初始围压和不同卸荷速率下的加卸载试验,并与常规加载试验相对比,通过获取全过程应力–应变曲线分析卸荷冻结砂岩的力学性能与变形特性,以及岩样的破坏特征。结果表明:(1)卸荷冻结砂岩呈剪切破坏和劈裂破坏组合破坏模式,且以劈裂破坏为主;高初始围压和高卸荷速率下,岩样脆性特征明显,破坏更加剧烈。(2)卸荷砂岩的峰值强度普遍低于(约降低1/4)常规砂岩的,残余强度则恰好相反,而二者强度值均与初始围压呈线性正相关;卸荷砂岩的弹性模量约为常规砂岩的1.5倍,泊松比为2~4倍。(3)卸荷使冻结砂岩的变形明显增大,扩容现象显著,应力–应变曲线峰前应力强化效应和峰后应力弱化效应减弱,峰后应力出现水平段。(4)卸荷主要通过降低黏聚力、提高内摩擦角来改变冻结砂岩的力学强度;卸荷速率的升高、温度的降低,使得冻结砂岩的峰值强度和弹性模量增大,变形、泊松比和残余强度减小。基于损伤力学等应变假设和Weibull分布,建立了适用于冻结砂岩的卸荷损伤本构模型,能够切实地反映冻结砂岩的侧向卸荷力学特性。研究成果可为低温软岩力学特性研究及其工程应用提供重要参考。

关键词：岩石力学冻结砂岩侧向卸荷力学性质损伤模型初始围压卸荷速率

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