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Automotive Innovation 2022年第1期5卷 29-42页

作者： Zhenpo Wang Lantian Li Junjun Deng baokun zhang Shuo Wang School of Mechanical Engineering Beijing Institute of TechnologyNO.5 Zhongguancun StreetBeijingChina Collaborative Innovation Center of Electric Vehicles in Beijing NO.5 Zhongguancun StreetBeijingChina

Fleets of autonomous vehicles including shuttle buses,freight trucks,and road sweepers will be deployed in the Olympic Vil-lage during Beijing 2022 Winter Olympics.This requires intelligent charging infrastructure based on wireless power transfer technology to be equipped.To increase the misalignment tolerance of a high-power wireless charger,the robustness of the magnetic coupler should be optimized.This paper presents a new type of unipolar coupler,which is composed of three con-nected coils in series.The dimensional configuration of the coils is analyzed by the finite element method.The characteristic parameters of the coil are identified with their influence on the self-inductance and coupling coefficient.An expert model is built,whose feasibility can be verified in the aimed design domain.Combined with the expert model,an improved simulated annealing algorithm with a backtracking mechanism is proposed.The primary coil can reach the expected characteristics from any starting parameter combination through the proposed optimization algorithm.Under the same conditions in terms of external circuit parameters,ferrite usage,and aluminum shielding,the offset sensitivity of the magnetic coupler can be reduced from 58.79%to 18.89%.A prototype is established,validating the feasibility of the proposed coil structure with the optimized parameter algorithm.

关键词： Wireless power transfer Magnetic coupler Simulated annealing algorithm Robust optimization

A forkhead transcription factor contributes to the regulatory differences of pathogenicity in closely related fungal pathogens

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mLife 2022年第1期1卷 79-91页

作者： Weixin Ke Yuyan Xie Yue Hu Hao Ding Xin Fan Jingjing Huang Xiuyun Tian baokun zhang Yingchun Xu Xiao Liu Ying Yang Linqi Wang State Key Laboratory of Mycology Institute of MicrobiologyChinese Academy of SciencesBeijingChina College of Life Sciences University of Chinese Academy of SciencesBeijingChina Department of Infectious Diseases and Clinical Microbiology Beijing Chaoyang HospitalCapital Medical UniversityBeijingChina Department of Clinical Laboratory Peking Union Medical College HospitalPeking Union Medical CollegeChinese Academy of Medical SciencesBeijingChina Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases Peking Union Medical College HospitalPeking Union Medical CollegeChinese Academy of Medical SciencesBeijingChina Graduate School Peking Union Medical CollegeChinese Academy of Medical SciencesBeijingChina Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Disease Department of BiotechnologyBeijing Institute of Radiation MedicineBeijingChina

Cryptococcus neoformans and its sister species Cryptococcus deuterogattii are important human fungal pathogens.Despite their phylogenetically close relationship,these two Cryptococcus pathogens are greatly different in their clinical characteristics.However,the determinants underlying the regulatory differences of their pathogenicity remain largely unknown.Here,we show that the forkhead transcription factor Hcm1 promotes infection in C.neoformans but not in C.deuterogattii.Monitoring in vitro and in vivo fitness outcomes of multiple clinical isolates from the two pathogens indicates that Hcm1 mediates pathogenicity in C.neoformans through its key involvement in oxidative stress defense.By comparison,Hcm1 is not critical for antioxidation in C.deuterogattii.Furthermore,we identified SRX1,which encodes the antioxidant sulfiredoxin,as a conserved target of Hcm1 in two Cryptococcus pathogens.Like HCM1,SRX1 had a greater role in antioxidation in C.neoformans than in C.deuterogattii.Significantly,overexpression of SRX1 can largely rescue the defective pathogenicity caused by the absence of Hcm1 in C.neoformans.Conversely,Srx1 is dispensable for virulence in C.deuterogattii.Overall,our findings demonstrate that the difference in the contribution of the antioxidant sulfiredoxin to oxidative stress defense underlies the Hcm1-mediated regulatory differences of pathogenicity in two closely related pathogens.

关键词： Cryptococcus deuterogattii Cryptococcus neoformans forkhead transcription factor pathogenicity

基于Modelica的交流伺服控制系统建模与仿真

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软件导刊 2024年第1期23卷 8-13页

作者：胡锦涛陈路杨浩张宝坤鲍丙瑞苏州同元软控信息技术有限公司江苏苏州215123

永磁同步电机(PMSM)在交流伺服系统中应用十分广泛,其数学模型具有非线性、多变量、强耦合的特点。为提高建模与分析效率,并兼顾PMSM模型在复杂多领域系统中的通用性等问题,提出一种基于Modelica的交流伺服控制系统的建模方法。采用模... 详细信息

永磁同步电机(PMSM)在交流伺服系统中应用十分广泛,其数学模型具有非线性、多变量、强耦合的特点。为提高建模与分析效率,并兼顾PMSM模型在复杂多领域系统中的通用性等问题,提出一种基于Modelica的交流伺服控制系统的建模方法。采用模块化建模与Modelica语言实现了PMSM的非因果建模,在MWORKS平台建立了伺服系统的仿真模型,并在位置控制、速度控制方面测试了3类典型工况。实验表明,所提方法跟随误差小、动态响应快,验证了建模方法和系统模型构建的正确性和合理性,为伺服控制系统和多领域建模与仿真技术的发展提供了新思路。

关键词：永磁同步电机伺服控制 MWORKS Modelica 多领域建模

How topography and neighbor shape the fate of trees in subtropical forest restoration:Environmental filtering and resource competition drive natural regeneration

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Forest Ecosystems 2024年第1期11卷 73-86页

作者： Haonan zhang Xingshuo zhang Yingying Lv Yanyan Ni baokun Xu Xiangnan Han Xiao Cao Qingpei Yang Wanggu Xu Zhedong Qian Innovative Research Team for Forest Restoration Mechanisms Nanjing Institute of Environmental SciencesMinistry of Ecology and Environment(MEE)Nanjing 210042China College of Forestry Jiangxi Agricultural UniversityNanchang 330045China

The structure of plant communities at local scales depends on both the spatial heterogeneity of abiotic environmental factors and the biotic interactions within the community.However,although environmental filtering due to microtopographic heterogeneity and resource competition among plants caused by spatial variation in tree density and size are considered to be very important in explaining the mechanisms of community assembly,their effects on the processes of individual mortality and recruitment in natural forest regeneration,as well as their relative contributions,are still poorly understood.To address this,we established a 12-ha permanent plot in a subtropical evergreen broad-leaved forest area and measured microtopographic variables such as elevation,slope,aspect,and terrain position index(TPI)using a total station.We monitored the individual mortality and recruitment in forest natural regeneration through repeated surveys at 5-year intervals.We fitted spatial covariance models to jointly use multiple factors from three groups of variables(microtopographic effect,neighborhood density effects,neighborhood size effects)as explanatory variables to analyze their roles in driving the mortality and recruitment of all individual and 12 dominant species in forest natural regeneration at the neighborhood scale.Our results show that:(1)In the crucial early stages of secondary forest restoration,natural regeneration is influenced by a synergy of environmental filtering,due to microtopographic heterogeneity,and resource competition among plants.(2)For distinct species responses,evergreen dominant species'mortality is largely explained by neighborhood effects,while deciduous species are more affected by topographic factors.Furthermore,the adverse effects of larger conspecific trees on younger trees indicate a pattern of competitive pressure leading to mortality among regenerating trees,such pattern emphasis the influence of parent trees on natural regeneration.(3)As trees grow,their interaction with these stressors evolv

关键词： Natural regeneration Microtopography Neighborhood effects Mortality and recruitment

不同酶解条件下大豆分离蛋白结构特性及起泡性研究

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农业机械学报 2024年第5期55卷 431-439页

作者：齐宝坤王英李子玉张小影王帅东北农业大学食品学院哈尔滨150030

以大豆分离蛋白(SPI)为原料,采用碱性蛋白酶(Alcalase)进行酶解(0~180 min),通过凝胶电泳、傅里叶红外光谱(FT-IR)和内源荧光光谱等方法探究酶解产物的结构变化;通过表面张力、界面蛋白吸附量等指标说明酶解产物的界面行为,并分析结构... 详细信息

以大豆分离蛋白(SPI)为原料,采用碱性蛋白酶(Alcalase)进行酶解(0~180 min),通过凝胶电泳、傅里叶红外光谱(FT-IR)和内源荧光光谱等方法探究酶解产物的结构变化;通过表面张力、界面蛋白吸附量等指标说明酶解产物的界面行为,并分析结构变化和界面行为对泡沫性质的影响。经酶解后,蛋白中7S和11S典型条带消失并有新条带产生(约24 ku);与SPI相比,水解物中α-螺旋含量减少,β-转角和无规则卷曲含量增加;荧光波长发生红移。以上结果说明蛋白结构展开,进而促进蛋白功能性的改变。结果发现,酶解90 min时样品起泡性最好(起泡性指数143.20%),可能由于此时水解物平均粒径最低(208.10 nm),溶解度较高(90.44%),表面张力最低,有利于提升水解物在空气-水界面的吸附速率,但由于酶解作用产生较小的肽段失去了蛋白质网络结构的能力,因而对泡沫稳定性有负面的影响。此外,酶解作用大大提高了蛋白抗氧化性。通过酶解可以有效地改善SPI的起泡性,拓宽了酶解后的SPI作为一种有效的起泡剂在食品中的应用范围。

关键词：大豆分离蛋白碱性蛋白酶界面行为起泡性抗氧化

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中性点经消弧线圈并联可控小电阻接地分析

电力安全技术 2022年第3期24卷 21-24页

作者：张宝坤洪有源广东电网有限责任公司中山供电局广东中山528400

简要介绍了中性点不接地、中性点经消弧线圈接地、中性点经小电阻接地等3种传统接地方式及其优缺点比较,阐述了中性点经消弧线圈并联可控小电阻接地方式的动作逻辑,相较传统接地方式,能更快速准确地选出接地线路故障并实现故障隔离,并... 详细信息

简要介绍了中性点不接地、中性点经消弧线圈接地、中性点经小电阻接地等3种传统接地方式及其优缺点比较,阐述了中性点经消弧线圈并联可控小电阻接地方式的动作逻辑,相较传统接地方式,能更快速准确地选出接地线路故障并实现故障隔离,并提出了运维相关对策。

关键词：电网中性点接地方式消弧线圈可控小电阻

基于S-CAD法的县域新型城镇化发展规划方案评估研究——以陕西省佳县为例

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西部人居环境学刊 2024年第1期39卷 115-121页

作者：付晓萌张沛杨保琨王娜西安建筑科技大学建筑学院

规划方案作为相关利益主体价值观的直接体现,应当在规划评估中予以重视。基于城乡规划的公共政策属性,采用S-CAD政策评估方法,以陕西省佳县的《新型城镇化与城乡统筹规划》文本为例,选取规划编制与实施主体——政府作为主导视角,对规划... 详细信息

规划方案作为相关利益主体价值观的直接体现,应当在规划评估中予以重视。基于城乡规划的公共政策属性,采用S-CAD政策评估方法,以陕西省佳县的《新型城镇化与城乡统筹规划》文本为例,选取规划编制与实施主体——政府作为主导视角,对规划文本的内容进行解构,在此基础上进行规划立场、目标、手段与预期结果的一致性、充要性与依赖性分析。研究发现:一、该规划文本自身的逻辑性较强,各个环节存在基本的对应关系;二、规划文本当中对于产业发展以及由此带来的人口问题、基础设施与公共服务设施问题的解决方案描述较多,对于生态环境保护、交通环境改善以及人口流动的实质性解决方案相对较少,逻辑上存在一定的漏洞,需进一步完善逻辑链条。基于此,提出建立城乡规划全过程评估体系及重视多元利益主体协调关系的建议,以期为相关规划的编制与评估工作提供参考。

关键词： S-CAD政策评估方法县域城镇化新型城镇化城乡统筹文本评估

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固有成分滤波器的旋转机械故障诊断方法

振动．测试与诊断 2024年第1期44卷 159-165,204页

作者：张宗振韩宝坤李舜酩鲍怀谦王金瑞山东科技大学机械电子工程学院青岛266590 南京航空航天大学能源与动力学院南京210016

针对噪声环境下旋转机械微弱复合故障诊断问题,提出了一种强噪声干扰下基于固有成分滤波器(intrinsic component filtering,简称ICF)的旋转机械故障检测和分离方法。ICF通过最小化样本间特征的L1/2范数和样本内特征的L3/2范数来实现样... 详细信息

针对噪声环境下旋转机械微弱复合故障诊断问题,提出了一种强噪声干扰下基于固有成分滤波器(intrinsic component filtering,简称ICF)的旋转机械故障检测和分离方法。ICF通过最小化样本间特征的L1/2范数和样本内特征的L3/2范数来实现样本之间特征的一致性和样本内部特征的稀疏性,并训练出最优滤波器组,是一种无监督多维盲解卷积算法。首先,构建输入信号的Hankel训练矩阵,通过权值矩阵与Hankel矩阵的乘积模拟卷积过程,再利用固有属性滤波器实现特征学习;其次,通过峭度信息选择最优滤波器;最后,根据滤波后的时域波形和包络谱实现故障诊断。仿真和试验信号验证了提出方法的故障诊断性能,研究结果表明,提出的方法无需任何先验经验,可以实现强噪声环境下的微弱故障的分离,同时具备很好的鲁棒性。

关键词：旋转机械故障诊断无监督学习固有成分滤波器微弱信号检测复合故障分离

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辽西义县组发现一新的翼手龙类化石

地质论评 2005年第4期51卷 458-462,i0004页

作者：吕君昌张宝堃中国地质科学院地质研究所北京100037 北京自然博物馆北京100050

根据产自中国辽宁省西部早白垩世义县组上部、具有不完整头骨的翼手龙类骨架确立一新属新种: 李氏始无齿翼龙Eopteranodon lii(gen.et sp.nov.)。从它窄长的头骨且其上、下颌尖长而没有牙齿,短的颈椎椎体上来看,显示了该翼龙与无齿翼龙... 详细信息

根据产自中国辽宁省西部早白垩世义县组上部、具有不完整头骨的翼手龙类骨架确立一新属新种: 李氏始无齿翼龙Eopteranodon lii(gen.et sp.nov.)。从它窄长的头骨且其上、下颌尖长而没有牙齿,短的颈椎椎体上来看,显示了该翼龙与无齿翼龙类相似。始无齿翼龙的肱骨没有像其他无齿翼龙类那样具有弯曲的肱骨三角嵴, 而且几乎所有的无齿翼龙类均个体较大。始无齿翼龙的个体较小,两翼展宽约为1.1 m左右。腕骨没有愈合,肱骨三角嵴较平直以及第Ⅳ翼掌骨稍微长于尺骨显示了它的原始性,它代表一新的、较原始的、类似无齿翼龙的翼手龙类。

关键词：辽宁白垩世翼手龙类化石牙齿头骨形态

Corrigendum to “Increasing the greenness of an organic acid through deep eutectic solvation and further polymerisation” [Green Energy & Environ 7 (4) (August 2022) 840–853]

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Green Energy & Environment 2024年第3期9卷 596-596页

作者： Liteng Li Xiaofang Li Susu zhang Hongyuan Yan Xiaoqiang Qiao Hongyan He Tao Zhu baokun Tang College of Phamaceutical Science Instiute of Life Science and Green DevelopmentKey Laboratory of Medicinal Chemisty and Malecular Diagnosis of Ministry of EducationHebei UniversityBaoding071002China CAS Key Laboratony of Green Process and Engineering Institute of Prcess EngineeringChinese Academy of SciencesBeijing010190China

The authors regret that the name of the ethic committee that approved the study and the reference number was omitted from the published paper.In this research,all animal experiments were performed in accordance with the Guide for the Care and Use of Laboratory Animals(US National Institutes of Healh)and were approved by the Animal Welfare and Ethical Committee of Hebei University(No.IACUC-2020XG021,Baoding,China).

关键词： approved committee Hebei