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Study of pre-processing model of coal-mine hoist wire-rope fatigue damage signal

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International Journal of Mining Science and Technology 2015年第6期25卷 1017-1021页

作者： Tian Jie Wang Hongyao Zhou Junying meng guoying School of Mechanical Electronic and Information Engineering China University of Mining and Technology

In this paper, we propose a pre-processing method for the detection of wire-rope signals. This is necessary because of the lack of processing methods that are currently employed. First, we investigated the one-dimensional discrete morphological and wavelet transform. Then, we developed a pre-processing model that is based on the morphological wavelet-filtering algorithm. We then proposed a modified morphology filtering algorithm. We also designed an experiment platform for wire-rope *** levels of localized flaws(LFs) and damage were formed in the wire-rope specimen. We performed a series of experimental studies, and the results show that the proposed method can effectively filter the drift signal. The signal-to-noise ratio of the new filtering algorithm was over 26 d B. The signal-to-noise ratio of the existing method is less than 15 d B, and the noise-signal ratio of the new filtering algorithm has improved by 73%. Based on our results, the filtering effect of the proposed method is better than that of the present method. This study has great significance and practical value in engineering applications.

关键词： Coal-mineHoist wire ropeSignal processingFast morphological wavelet-filteringalgorithm

Design of high-temperature superconductors at moderate pressures by alloying AlH3 or GaH3

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Matter and Radiation at Extremes 2024年第1期9卷 94-103页

作者： Xiaowei Liang Xudong Wei Eva Zurek Aitor Bergara Peifang Li guoying Gao Yongjun Tian Center for High Pressure Science(CHiPS) State Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdao 066004China School of Materials Science and Engineering Henan University of TechnologyZhengzhou 450001China Department of Chemistry State University of New York at BuffaloBuffaloNew York 14260-3000USA Physics Department and EHU Quantum Center University of the Basque CountryUPV/EHU48080 BilbaoSpain Donostia International Physics Center(DIPC) 20018 DonostiaSpain Centro de Física de Materiales CFM Centro Mixto CSIC-UPV/EHU20018 DonostiaSpain Extreme Conditions Physics Research Team College of Physics and Electronic InformationInner Mongolia Minzu UniversityTongliao 028043China

Since the discovery of hydride superconductors,a significant challenge has been to reduce the pressure required for their *** this context,we propose that alloying could be an effective strategy to achieve *** focus on a series of alloyed hydrides with the AMH_(6)composition,which can be made via alloying A15 AH_(3)(A=Al or Ga)with M(M=a group IIIB or IVB metal),and study their behavior under *** of them are predicted to maintain the A15-type structure,similar to AH_(3)under pressure,providing a platform for studying the effects of alloying on the stability and superconductivity of AH_(3).Among these,the A15-type phases of AlZrH_(6)and AlHfH_(6)are found to be thermodynamically stable in the pressure ranges of 40–150 and 30–181 GPa,***,they remain dynamically stable at even lower pressures,as low as 13 GPa for AlZrH_(6)and 6 GPa for AlHfH_(6).These pressures are significantly lower than that required for stabilizing A15 ***,the introduction of Zr or Hf increases the electronic density of states at the Fermi level compared with *** enhancement leads to higher critical temperatures(Tc)of 75 and 76 K for AlZrH_(6)and AlHfH_(6)at 20 and 10 GPa,*** the case of GaMH_(6)alloys,where M represents Sc,Ti,Zr,or Hf,these metals reinforce the stability of the A15-type structure and reduce the lowest thermodynamically stable pressure for GaH_(3) from 160 GPa to 116,95,80,and 85 GPa,*** noteworthy are the A15-type GaMH_(6)alloys,which remain dynamically stable at low pressures of 97,28,5,and 6 GPa,simultaneously exhibiting high Tc of 88,39,70,and 49 K at 100,35,10,and 10 GPa,***,these findings enrich the family of A15-type superconductors and provide insights for the future exploration of high-temperature hydride superconductors that can be stabilized at lower pressures.

关键词： alloying alloys superconductors

Effect of long reaction distance on gas composition from organic-rich shale pyrolysis under high-temperature steam environment

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International Journal of Coal Science & Technology 2024年第3期11卷 102-119页

作者： Lei Wang Rui Zhang guoying Wang Jing Zhao Dong Yang Zhiqin Kang Yangsheng Zhao Key Laboratory of In-Situ Property Improving Mining of Ministry of Education Taiyuan University of TechnologyTaiyuan030024China The In-Situ Steam Injection Branch of State Center for Research and Development of Organic-Rich Shale Exploitation Taiyuan University of TechnologyTaiyuan030024China College of Mining Engineering Taiyuan University of TechnologyTaiyuan030024China School of Energy Science and Engineering Henan Polytechnic UniversityJiaozuo454002China

When high-temperature steam is used as a medium to pyrolyze organic-rich shale,water steam not only acts as heat transfer but also participates in the chemical reaction of organic matter pyrolysis,thus affecting the generation law and release characteristics of gas *** this study,based on a long-distance reaction system of organic-rich shale pyrolysis via steam injection,the effects of steam temperature and reaction distance on gas product composition are analyzed in depth and compared with other pyrolysis *** advantages of organic-rich shale pyrolysis via steam injection are then *** volume concentration of hydrogen in the gas product obtained via the steam injection pyrolysis of organic-rich shale is the highest,which is more than 60%.The hydrogen content increases as the reaction distance is extended;however,the rate of increase changes *** the reaction distance from 800 to 4000 mm increases the hydrogen content from 34.91%to 69.68%and from 63.13%to 78.61%when the steam temperature is 500°C and 555°C,***,the higher the heat injection temperature,the smaller the reaction distance required to form a high concentration hydrogen pyrolysis environment(hydrogen concentration>60%).When the steam pyrolysis temperature is increased from 500°C to 555°C,the reaction distance required to form a high concentration of hydrogen is reduced from 3800 to 800 *** with the direct retorting process,the volume concentration of hydrogen obtained from high-temperature steam pyrolysis of organic-rich shale is 8.82 and 10.72 times that of the commonly used Fushun and Kivite furnaces,*** pyrolysis of organic-rich shale via steam injection is a pyrolysis process in a hydrogen-rich environment.

关键词： Steam temperature Pyrolysis gas Hydrogen-rich Reaction distance Direct retorting

Multi-functional epoxides cross-linked collagen sponges for tissue engineering scaffolds

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Molecular Epidemiological Study of a Human Brucellosis Outbreak—Weihai City,Shandong Province,China,2022

胶原与皮革（英文） 2024年第1期6卷 127-140页

作者： Yuanzhi Zhang Changkai Yang Min Gu Xiaoxia Zhang Xueqing Zhang guoying Li National Engineering Laboratory for Clean Technology of Leather Manufac-ture Sichuan UniversityChengdu 610065People's Republic of China Key Laboratory of Leather Chemistry and Engineering(Sichuan University) Min-istry of EducationChengdu 610065People's Republic of China Max Planck Institute for Polymer Research 55128 MainzGermany National Engineering Laboratory for Clean Technology of Leather Manufac-ture Sichuan UniversityChengdu 610065People's Republic of China Key Laboratory of Leather Chemistry and Engineering(Sichuan University) Min-istry of EducationChengdu 610065People's Republic of China

With the efficient cross-linking abilities and the flexible regulation abilities to the performances of cross-linked products,the multi-functional aliphatic epoxides were once widely used to cross-link the collagen-based materials in the last *** present work,the multi-functional epoxides were used to construct and cross-link collagen sponges for tissue engineering scaffolds,which was hoped to board the theoretical system of epoxides and explore their potentials for modern *** bi-to tetra-functional epoxides were used to cross-link collagen solu-tions and establish the gel-like precursors,then using freeze-drying to form the final *** SEM observed that the sponges had shown regular porous structures with a wide range of pore sizes from 160 to 440 μ*** sponges had presented the resistance to enzymatic degradation,shape-remaining ability,and reversible compress-ibility in aqueous environments,which all could be regulated through the functionalities of *** regulation abilities of multi-functional epoxides on the performances of sponges had been mainly achieved through the cross-linking degrees that the higherfunctionality of epoxides would bring higher cross-linking *** higher cross-linking degrees could enhance the elastic behaviors of gel-like precursors,and improve the compressive strengths and thermal stabilities of ***,the multi-functional epoxides had barely affected the safety of col-lagen sponges at the cellular level according to the results of CCK8 assay and the SEM and CLSM images of L929 fibroblasts cultured on the cross-sections of sponges.

关键词： Multi-functional epoxides Collagen sponges Tunable porous structures Reversible compressibility

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China CDC weekly 2024年第12期6卷 230-234页

作者： Yan Li Yifan Yu Jian Zhao Shujun Ding guoying Zhang Xiaolin Yu Zengqiang Kou Shandong Provincial Center for Disease Control and Prevention Jinan CityShandong ProvinceChina Shandong First Medical University Shandong Academy of Medical SciencesJinan CityShandong ProvinceChina Weihai Municipal Center for Disease Control and Prevention Weihai CityShandong ProvinceChina

What is already known about this topic?Brucellosis,mainly caused by Brucella melitensis(***),is regarded as a significant zoonotic disease in *** Weihai,located at the eastern end of the Shandong Peninsula,brucellosis has been in a low epidemic phase for the past five *** is added by this report?This was the initial report of a brucellosis outbreak in the last five *** of *** bv.3 from Weihai and other cities showed a close genetic relationship,suggesting a potential common *** are the implications for public health practice?Epidemiological investigations depend on standardized and effective molecular typing methods and analysis tools for public health laboratories to identify and trace *** the circulation patterns of livestock in free-range households in heavily affected areas is essential for controlling the spread of brucellosis.

关键词： Shandong China. break

Next‑Generation Sequencing‑Based Copy Number Variation Analysis in Chinese Patients with Primary Ciliary Dyskinesia Revealed Novel DNAH5 Copy Number Variations

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Phenomics 2024年第1期4卷 24-33页

作者： Weicheng Chen Zhuoyao Guo mengru Li Wei Sheng guoying Huang Cardiovascular Center Children’s Hospital of Fudan University399 Wanyuan RoadShanghai 201102China Respirology Department Children’s Hospital of Fudan UniversityShanghai 201102China

Primary ciliary dyskinesia(PCD)is a rare disorder characterized by extensive genetic ***,in the genetic pathogenesis of PCD,copy number variation(CNV)has not received sufcient attention and has rarely been reported,especially in ***-generation sequencing(NGS)followed by targeted CNV analysis was used in patients highly suspected to have PCD with negative results in routine whole-exome sequencing(WES)*** real-time polymerase chain reaction(qPCR)and Sanger sequencing were used to confrm these *** further characterize the ciliary phenotypes,high-speed video microscopy analysis(HSVA),transmission electron microscopy(TEM),and immunofuorescence(IF)analysis were *** 1(F1:II-1),a 0.6-year-old girl,came from a nonconsanguineous *** presented with situs inversus totalis,neonatal respiratory distress,and *** nasal nitric oxide level was markedly *** respiratory cilia beat with reduced *** revealed shortened outer dynein arms(ODA)of ***5:13717907-13722661del spanning exons 71–72 was identifed by NGS-based CNV *** 2(F2:IV-4),a 37-year-old man,and his eldest brother Patient 3(F2:IV-2)came from a consanguineous *** had sinusitis,bronchiectasis and situs inversus *** respiratory cilia of Patient 2 and Patient 3 were found to be uniformly immotile,with ODA *** novel homozygous deletions chr5:13720087_13733030delinsGTTTTC and chr5:13649539_13707643del,spanning exons 69–71 and exons 77–79 were identifed by NGS-based CNV *** in DNA copy number were confrmed by qPCR *** showed that the respiratory cilia of Patient 1 and Patient 2 were defcient in dynein axonemal heavy chain 5(DNAH5)protein *** report identifed three novel DNAH5 disease-associated variants by WES-based CNV *** study expands the genetic spectrum of PCD with DNAH5 in the Chinese population.

关键词： Primary ciliary dyskinesia DNAH5 gene Copy number variation Phenotypic heterogeneity

Living in Harmony with Our Waters and Ensuring Our Rivers Flourish

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Qiu Shi 2024年第2期16卷 45-53页

作者： Li guoying Ministry of Water Resources

Rivers,lakes,and other bodies of water Jare the lifeblood of our planet,the wellspring of human life,and the cradle of *** the 18th National Congress of the Communist Party of China(CPC)in 2012,the Central Committee with Xi Jinping at the core has placed great emphasis on the protection and management of rivers,launching a national river *** has paved the way for a new chapter in river protection and management in the new era.

关键词： planet river protection

煤矿巷道顶板强度随钻识别系统与钻速优化研究

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河南理工大学学报（自然科学版） 2022年第3期41卷 112-118页

作者：于广东孟国营冯学文中国矿业大学(北京)机电与信息工程学院北京100083

为了在煤矿巷道支护过程中对顶板单轴抗压强度进行随钻实时识别并对锚杆钻机的钻速进一步优化,基于气动锚杆机、传感器与控制器监测系统的钻进参数,设计巷道顶板单轴抗压强度随钻识别系统。通过气动马达的扭矩与转速、支腿气缸的压力与... 详细信息

为了在煤矿巷道支护过程中对顶板单轴抗压强度进行随钻实时识别并对锚杆钻机的钻速进一步优化,基于气动锚杆机、传感器与控制器监测系统的钻进参数,设计巷道顶板单轴抗压强度随钻识别系统。通过气动马达的扭矩与转速、支腿气缸的压力与速度,识别巷道顶板单轴抗压强度,推导出顶板岩层随钻识别钻进参数的计算公式。采用气动马达功率特性曲线优化钻速,并且研制顶板岩层强度随钻识别试验系统,以期解决顶板岩层勘测的误解和经济费用问题,从而进一步提升煤矿井下作业的安全性。

关键词：顶板岩层气动随钻识别单轴抗压强度

基于超弹-黏弹本构模型的橡胶材料有限元分析

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弹性体 2022年第1期32卷 6-9页

作者：丁军索双富张琦孟国营华北科技学院机电工程学院河北廊坊065201 中国矿业大学(北京)机电与信息工程学院北京100083 清华大学机械工程学院北京100084 大连理工大学机械工程学院辽宁大连116000

要确定橡胶制品在外部因素作用下的力学响应,就需要建立起能够精确描述橡胶材料力学性能的本构模型。通过对橡胶材料进行单轴压缩以及应力松弛实验,并与ABAQUS数值模拟相结合,建立并拟合了橡胶材料超弹-黏弹本构模型以及相关参数,同时... 详细信息

要确定橡胶制品在外部因素作用下的力学响应,就需要建立起能够精确描述橡胶材料力学性能的本构模型。通过对橡胶材料进行单轴压缩以及应力松弛实验,并与ABAQUS数值模拟相结合,建立并拟合了橡胶材料超弹-黏弹本构模型以及相关参数,同时建立了与实验条件一致的仿真模型。结果表明,实验数据与仿真数据的误差较小,验证了建立的超弹-黏弹本构模型的准确性。

关键词：超弹模型黏弹模型压缩实验应力松弛本构关系