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Variable universe fuzzy control of walking stability for flying‐walking power line inspection robot based on multi‐work conditions

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IET Cyber-Systems and Robotics 2022年第3期4卷 212-227页

作者： Zhaojun Li xinyan qin Jin Lei Jie Zhang Huidong Li Bo Li Yanqi Wang Dexin Wang College of Mechanical and Electrical Engineering Shihezi UniversityShiheziChina

To address complex work conditions incredibly challenging to the stability of power line inspection robots,we design a walking mechanism and propose a variable universe fuzzy control(VUFC)method based on multi‐work conditions for flying‐walking power line inspection robots(FPLIRs).The contributions of this paper are as follows:(1)A flexible pressing component is designed to improve the adaptability of the FPLIR to the ground line slope.(2)The influence of multi‐work conditions on the FPLIR's walking stability is quantified using three condition parameters(i.e.,slope,slipping degree and swing angle),and their measurement methods are proposed.(3)The VUFC method based on the condition parameters is proposed to improve the walking stability of the ***,the effect of the VUFC method on walking stability of the FPLIR is *** experimental results show that the maximum climbing angle of the FPLIR reaches 29.1°.Compared with the constant pressing force of 30 N,the average value of slipping degree is 0.93°,increasing by 35%.The maximum and average values of robot's swing angle are reduced by 46%and 54%,*** comparing with fuzzy control,the VUFC can provide a more reasonable pressing force while maintaining the walking stability of the *** proposed walking mechanism and the VUFC method significantly improve the stability of the FPLIR,providing a reference for structural designs and stability controls of inspection robots.

关键词： condition parameters flyingwalking power line inspection robot multiwork conditions stability control variable universe fuzzy control

Association between duration of return of spontaneous circulation and outcomes after out-of-hospital cardiac arrest

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Emergency and Critical Care Medicine 2022年第4期2卷 191-196页

作者： Huixin Lian Andong Xia xinyan qin Sijia Tian Xuqin Kang Luxi Zhang Shengmei Niu Fei qin Jinjun Zhang Beijing Emergency Medical Center BeijingChina School of Electronic Electrical and Communication Engineering University of Chinese Academy of SciencesBeijingChina United Family Healthcare BeijingChina.

Background:Return of spontaneous circulation(ROSC)is a core outcome element of cardiopulmonary resuscitation(CPR);however,the definition or criterion of ROSC is disputed and varies in resuscitation for out-of-hospital cardiac arrest(OHCA).Methods:This was a retrospective study of 126 patients with OHCA who achieved ROSC between January and December *** probability of survival after OHCA related to CPR and ROSC duration was analyzed using the probability density function and empirical cumulative density ***:There were no significant differences between ROSC sustained until emergency department arrival and that sustained for at least 20 minutes in terms of the 24-hour survival rate(31.3%[31/99]vs.35.7%[10/30];P=0.84),30-day survival rate(23.2%[23/99]vs.25.0%[7/30];P=0.99),or survival at 30 days with cerebral performance category(CPC)1 and 2(18.2%[18/99]vs.10.7%[3/30];P=0.44).The Kolmogorov-Smirnov test values from the empirical cumulative density functions with ROSC sustained until hospital arrival and that sustained for at least 20 minutes were 0.44,0.20,and 0.24 for CPC 1 or 2,CPC 3 or 4,and CPC 5,***:Return of spontaneous circulation is a core outcome element of *** should be defined as sustained for at least 20 minutes or until arrival at the emergency department and as a basic standard for evaluating resuscitation success after OHCA.

关键词： Cardiac arrest Cardiopulmonary resuscitation Resuscitation Return of spontaneous circulation

A LexA-based yeast two-hybrid system for studying light- switchable interactions of phytochromes with their interacting partners

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aBIOTECH 2021年第2期2卷 105-116页

作者： Hong Li xinyan qin Pengyu Song Run Han Jigang Li State Key Laboratory of Plant Physiology and Biochemistry College of Biological SciencesChina Agricultural UniversityBeijing 100193China

Phytochromes are a family of photoreceptors in plants that perceive the red(R)and far-red(FR)components of their light *** exist in vivo in two forms,the inactive Pr form and the active Pfr form,that are interconvertible by treatments with R or FR *** is believed that phytochromes transduce light signals by interacting with their signaling partners.A GAL4-based lightswitchable yeast two-hybrid(Y2H)system was developed two decades ago and has been successfully employed in many studies to determine phytochrome interactions with their signaling ***,several pairs of interactions between phytochromes and their interactors,such as the phyACOP1 and phyA-TZP interactions,were demonstrated by other assay systems but were not detected by this GAL4 Y2H ***,we report a modified LexA Y2H system,in which the LexA DNA-binding domain is fused to the C-terminus of a phytochrome *** conformational changes of phytochromes in response to R and FR light are achieved in yeast cells by exogenously supplying phycocyanobilin(PCB)extracted from *** well-defined interaction pairs,including phyA-FHY1 and phyB-PIFs,are well reproducible in this ***,we show that our system is successful in detecting the phyA-COP1 and phyA-TZP ***,our study provides an alternative Y2H system that is highly sensitive and reproducible for detecting light-switchable interactions of phytochromes with their interacting partners.

关键词： Phytochrome Interaction Yeast two-hybrid LexA Light-switchable

Desiccation and osmotic resistance mechanism of Cronobacter spp. isolated from powdered infant formula

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Food Science and Human Wellness 2024年

作者： Shiqian Fu Danliangmin Song Xue qin Lihan Wang Qianyu Zhao Chaoxin Man xinyan Yang Yujun Jiang Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition College of Food and Pharmaceutical Sciences Ningbo University Key Laboratory of Dairy Science Ministry of Education Department of Food Science Northeast Agricultural University

Cronobacter spp. has strong resistance to desiccation and high permeability in Enterobacteriaceae， and powdered infant formula (PIF) is one of the main contamination routes. In recent years， the contamination of Cronobacter spp. in PIF incidents occur from time to time， causing infant serious diseases or death. In this investigation， matrix-assisted laser desorption/ionization time of flight mass spectrometry was used to identify the phenotypes of 35 Cronobacter strains isolated from PIF and its processing environment. Subsequently， the isolates were evaluated for drying and osmotic pressure tolerance. The results showed that the deactivation rate of the strains ranged from 9.01% to 77.57%， and the highest osmotic pressure condition the strains could tolerate was 6% NaCl. In addition， there was a positive correlation between biofilm formation ability and desiccation resistance. Combined with transcriptomics， Cronobacter spp. can activate biofilm synthesis， produce more trehalose， accumulate betaine and electrolytes to stabilize intracellular structure under the two treatment conditions. 31 and 43 genes were found related to desiccation and permeability resistance， respectively. And some genes (cysM， thuF， ycjO， et al) were found to be associated with two tolerances for the first time.

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双动刀沙棘枝条切割参数分析与试验

农业工程学报 2023年第10期39卷 26-36页

作者：王炳棚雷金秦新燕王卫兵王军扬任子超翟志远石河子大学机械电气工程院石河子832003 新疆红蚁农业科技有限公司塔城834612

为探明沙棘枝条最优切割参数,解决针对国内沙棘专用机械收获装备空缺问题,该研究设计了双动刀沙棘枝条切割试验台并开展沙棘枝条切割试验,确定了切割装置关键结构参数,基于LabVIEW开发了沙棘枝条切割特性测控系统和数据采集软件。通过... 详细信息

为探明沙棘枝条最优切割参数,解决针对国内沙棘专用机械收获装备空缺问题,该研究设计了双动刀沙棘枝条切割试验台并开展沙棘枝条切割试验,确定了切割装置关键结构参数,基于LabVIEW开发了沙棘枝条切割特性测控系统和数据采集软件。通过单因素试验探究平均切割速度、刀具滑切角、刀刃高度和动刀组数对单位直径峰值力及单位面积切割功耗的影响;采用Box-Behnken多因素试验设计方法,以平均切割速度、枝条喂入速度和刀具滑切角为试验因素,以单位直径峰值力和单位面积切割功耗为评价指标建立回归模型。试验结果表明,评价指标随着平均切割速度、刀具滑切角和刀刃高度的增大而减小,在双动刀时比单动刀时数值更小。通过响应曲面法优化回归模型,确定最优切割参数组合为平均切割速度0.45 m/s、枝条喂入速度0.64 m/s、刀具滑切角9.4°,该组合下单位直径峰值力为53.33 N/mm,单位面积切割功耗为69.87 kJ/m^(2),模型误差小于5%,切割参数优化结果准确。研究结果可为后续沙棘枝条收获装备的研发提供数据支撑。

关键词：机械化试验切割沙棘枝条往复式双动刀

经直肠双平面高频超声测量正常育龄期女性阴道壁相关参数及建立正常值范围

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中国医学影像技术 2024年第6期40卷 885-888页

作者：丁莹黎新艳周春桥秦婕广西中医药大学研究生院广西南宁530000 广西壮族自治区妇幼保健院超声医学科广西南宁530000 深圳迈瑞生物医疗电子股份有限公司广东深圳518000

目的利用经直肠双平面高频超声测量正常育龄期女性阴道壁厚度、长度及皱褶数,并建立其正常参考值范围。方法前瞻性招募245名正常育龄期女性志愿者,以经直肠双平面高频超声测量阴道壁厚度、长度、皱褶数并建立正常值参考范围;分析上述指... 详细信息

目的利用经直肠双平面高频超声测量正常育龄期女性阴道壁厚度、长度及皱褶数,并建立其正常参考值范围。方法前瞻性招募245名正常育龄期女性志愿者,以经直肠双平面高频超声测量阴道壁厚度、长度、皱褶数并建立正常值参考范围;分析上述指标与年龄、身高、体质量及体质量指数(BMI)的相关性。结果正常育龄期女性阴道壁厚度、长度、皱褶数参考值范围分别为(7.50~16.20)mm[95%CI(11.43,11.92)mm]、(3.30~7.61)cm[95%CI(5.35,5.74)cm]、5.00~15.00[95%CI(8.42,9.13)];阴道壁长度、皱褶数与年龄呈负相关(r=-0.145、-0.178,P=0.024、0.005),而阴道壁厚度与年龄、身高、体质量及BMI均无明显相关(P均>0.05)。结论经直肠双平面高频超声所获正常育龄期女性阴道壁厚度、长度及皱褶数正常参考值范围可为临床评估阴道状况提供参考。

关键词：阴道超声检查前瞻性研究

燃料串/并联的航空SOFC-GT混合系统性能对比分析

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推进技术 2024年第3期45卷 111-121页

作者：刘禾王静贻秦江修心岩姬志行董芃哈尔滨工业大学能源科学与工程学院黑龙江哈尔滨150001 哈尔滨工业大学(深圳)理学院广东深圳518055

固体氧化物燃料电池-涡轮(SOFC-GT)混合系统作为电推进飞机的动力源时,会面临低温低压的大气环境以及对重量有严苛的要求,因此通过优化系统构型使得该混合系统满足航空应用是一种有效的解决方式。为此本文提出了燃料并联和串联的两种SOF... 详细信息

固体氧化物燃料电池-涡轮(SOFC-GT)混合系统作为电推进飞机的动力源时,会面临低温低压的大气环境以及对重量有严苛的要求,因此通过优化系统构型使得该混合系统满足航空应用是一种有效的解决方式。为此本文提出了燃料并联和串联的两种SOFC-GT混合系统构型,并从热力循环理论、系统热力学性能以及系统功重比等方面依次对其进行了对比分析。结果表明,并联系统的热力学性能要优于串联系统,对于系统发电效率、比功和功重比分别提高3.32%,113.14%和34.04%,CO_(2)排放率降低3.22%。随压比的提升串联系统的效率存在最优点,随燃烧室温度的提升并联系统的效率持续下降。在空燃比为4~6的变化范围内,串联系统的输出功率变化幅度更大,相对并联系统为116.29%~87.11%。除此之外,虽然SOFC-GT混合系统的功重比相对较低,但基于其优异的效率,在系统能量密度方面整体要优于锂电池,这有利于提升电推进飞机的性能。

关键词：固体氧化物燃料电池燃气涡轮发电系统热力学性能电推进飞机

浅谈三大防火标准在化工设计过程中的选取和应用

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山东化工 2023年第17期52卷 200-203页

作者：覃新艳韩丽曹守凯山东天力科技工程有限公司山东济南250000

《建筑设计防火规范》(在本文中以“建规”指代)、《石油化工企业设计防火标准》(在本文中以“石化规”指代)、《精细化工企业工程设计防火标准》(在本文中以“精化规”指代)为中国化学工业的三大防火设计标准。通过对标准及国家安监局... 详细信息

《建筑设计防火规范》(在本文中以“建规”指代)、《石油化工企业设计防火标准》(在本文中以“石化规”指代)、《精细化工企业工程设计防火标准》(在本文中以“精化规”指代)为中国化学工业的三大防火设计标准。通过对标准及国家安监局文件的收集、整理、释义举例,给出三大防火标准的适用、选用原则,并进行工程设计举例。

关键词：规范标准应用设计

Application of GA for Three-area Power System after Deregulation with Valve Position Limit

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Application of GA for Three-area Power System after Deregula...