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Is there hybridization between 2 species of the same genus in sympatry?——The genetic relationships between Anoplophora glabripennis,Anoplophora chinensis,and putative hybrids

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Insect Science 2024年第2期31卷 633-645页

作者： Haiwen Qin huachao xu Arnaud Capron Ilga Porth Mingming Cui Melody A.Keena Xiaofang Deng Juan Shi Richard C.Hamelin Sino-French Joint Laboratory for Invasive Forest Pests in Eurasia Department of ForestBejing Forestry UniversityBejingChina Department of Forest and Conservation Sciences The University of British ColumbiaVancouverCanada College of Forestry and Biotechnology Zhejiang A&F UniversityHangzhouChina Department of Wood and Forest Sciences Laval UniversityQuebecCanada 5 Department of AgricultureNorthern Research StationUSDA Forest ServiceHamdenConnecticutUSA Changchun Landscape Plant Conservation Station Bureau of Forestry and Landscaping of ChangchunChangchunChina

Anoplophora glabripennis(Asian longhorn beetle,ALB)and Anoplophora chinensis(Citrus longhorn beetle,CLB)are native forest pests in China;they have become important international quarantine pests.They are found using the same Salix aureopendula host tree of Cixi,Zhejiang province,China.On this host tree,we collected additional beetles that appeared to be morphologically intermediate between ALB and CLB.By using a stereoscope,we observed that there were several bumps on the base of the elytra,which was inconsistent with ALB,which typically has a smooth elytral base,but was more like CLB,which has numerous short tubercles on the elytral base.Given their sympatry and intermediate morphology,we hypothesized that these may represent ALB×CLB hybrids.We studied the genomic profiles for 46 samples(ALB,CLB,and putative hybrids)using genotyping-by-sequencing(GBS)providing a reduced representation of the entire genome.Employing principal component analyses on the 163 GBS-derived single nucleotide polymorphism data,we found putative hybrids tightly clustered with ALB,but genetically distinct from the CLB individuals.Therefore,our initial hybrid hypothesis was not supported by genomic data.Further,while mating experiments between adult ALB and CLB were successful in 4 separate years(2017,2018,2020,and 2021),and oviposition behavior was observed,no progeny was produced.Having employed population genomic analysis and biological hybridization experiments,we conclude that the putative hybrids represent newly discovered morphological variants within ALB.Our approach further confirmed the advantage of genome-wide information for Anoplophora species assignment in certain ambiguous classification cases.

关键词： Anoplophora chinensis Anoplophora glabripenni sg enotyping-bysequencing invasive pest mating putative hybrid

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基于多目标粒子群的电动汽车优化充电策略

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电子科技 2024年第3期37卷 51-56页

作者：李婷婷娄柯王园徐华超安徽工程大学机械工程学院安徽芜湖241000 安徽工程大学电气工程学院安徽芜湖241000

居民区家用电动汽车充电具有较强的集中性,大规模电动汽车充电负荷会对配电网系统造成负荷峰谷差过大等问题。文中提出一种基于多目标粒子群(Multi-Objctive Particle Swarm Optimization,MPSO)算法的用户充电选择控制策略,通过分析预... 详细信息

居民区家用电动汽车充电具有较强的集中性,大规模电动汽车充电负荷会对配电网系统造成负荷峰谷差过大等问题。文中提出一种基于多目标粒子群(Multi-Objctive Particle Swarm Optimization,MPSO)算法的用户充电选择控制策略,通过分析预测电动汽车充电负荷建立以系统总负荷方差和调度成本最小为目标函数的多目标优化模型,同时考虑了电动汽车电池及系统功率等约束条件,采用多目标粒子群优化算法求解电动汽车最优起始充电时刻。仿真结果表明,相比居民区内电动汽车无序充电,文中所提电动汽车充电策略能有效降低负荷峰值和调度成本。

关键词：电动汽车粒子群算法有序充电负荷充电功率峰谷差电网安全多目标优化

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Designing multi-heterogeneous interfaces of Ni-MoS_(2)@NiS_(2)@Ni_(3)S_(2)hybrid for hydrogen evolution

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Nano Research 2024年第6期17卷 4782-4789页

作者： Haoxuan Yu Junan Pan Yuxin Zhang Longlu Wang huachao Ji Keyu xu Ting Zhi Zechao Zhuang College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology) Nanjing University of Posts&Telecommunications(NJUPT)Nanjing 210023China Department of Chemical Engineering Columbia UniversityNew YorkNY 10027USA

The transition metal chalcogenides represented by MoS_(2)are the ideal choice for non-precious metal-based hydrogen evolution catalysts.However,whether in acidic or alkaline environments,the catalytic activity of pure MoS_(2)is still difficult to compete with Pt.Recent studies have shown that the electronic structure of materials can be adjusted by constructing lattice-matched heterojunctions,thus optimizing the adsorption free energy of intermediates in the catalytic hydrogen production process of materials,so as to effectively improve the electrocatalytic hydrogen production activity of catalysts.However,it is still a great challenge to prepare heterojunctions with lattice-matched structures as efficient electrocatalytic hydrogen production catalysts.Herein,we developed a one-step hydrothermal method to construct Ni-MoS_(2)@NiS_(2)@Ni_(3)S_(2)(Ni-MoS_(2)on behalf of Ni doping MoS_(2))electrocatalyst with multiple heterogeneous interfaces which possesses rich catalytic reaction sites.The Ni-MoS_(2)@NiS_(2)@Ni_(3)S_(2)electrocatalyst produced an extremely low overpotential of 69.4 mV with 10 mA·cm^(−2)current density for hydrogen evolution reaction(HER)in 1.0 M KOH.This work provides valuable enlightenment for exploring the mechanism of HER enhancement to optimize the surface electronic structure of MoS_(2),and provides an effective idea for constructing rare metal catalysts in HER and other fields.

关键词： MoS_(2) heterojunctions multiple heterogeneous interfaces hydrogen evolution

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Prediction Model for Dendrolimus punctatus Walker in Coastal Shelterbelt in Zhejiang Province of China

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Plant Diseases and Pests 2013年第5期4卷 38-41页

作者： Tian Wanyin xu huachao School of Forestry and Biotechnology Zhejiang A &F University

[Objective] The paper was to establish prediction model for Dendrolimus punctatus Walker in coastal shelterbeh in Zhejiang Province of China. [ Method] Using the principles and methods of SAS software, and according to the correlation analysis and stepwise regression analysis, we selected the relevant meteorological factors from April 1982 to March 2006 as the variables and the population density of D. punctatus from 1983 to 2006 as the dependent variables, to establish the prediction model between insect population density and meteorological factors for D. punctatas in coastal shelterbelt. [ Result] By fitting test, the his- torical compliance rate of the equation was above 85%. When the related data from 2007 to 2011 were used for prediction test, the occurrence condition had small relative error with prediction results except the years seriously affected by natural disasters. [ Conclusion] The paper provides certain reference for pest control against D. punctatus in coastal shelterbelt.

关键词： SAS Coastal shelterbeh Dendrolimus punctatus Walker Regression model Fitting test

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Riverine sulfate sources and behaviors in arid environment,Northwest China:Constraints from sulfur and oxygen isotopes

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Journal of Environmental Sciences 2024年第3期137卷 716-731页

作者： Yifu xu Wenjing Liu Bing xu Zhifang xu Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China

The fate of riverine sulfate ion (SO_(4)^(2-)) and its environmental effects in arid environment are difficult to evaluate due to its complicated sources and strongly coupled behaviors with water cycle which is significantly modified by humans.To understand the sulfur cycle in aquatic systems in arid environment,the chemical and sulfur and oxygen isotopic compositions (δ^(34)S_(SO4)and δ^(18)O_(SO4)) of major rivers around the Badain Jaran Desert,northwestern China,were investigated.These rivers had averaged SO_(4)^(2-)content at 1336μmol/L,over 10times higher than the global average.The δ^(34)S_(SO4)and δ^(18)O_(SO4)values ranged from-5.3‰to+11.8‰and+1.6‰to+12.8‰,respectively.The end-member analysis and the inverse model showed that riverine sulfate was mainly derived from evaporites dissolution (0-87%),sulfide oxidation (13%-100%) and precipitation (0-33%),indicating heterogeneity in sulfur sources and behaviors along the river drainage with the lithology variations and climate gradients.Multiple isotopic tools combining with hydro-chemistry compositions could be applied to reveal sulfur cycle in arid environment.Based on the calculation,sulfide oxidation plays the primary role in the headwater and upstream in the Qilian-Mountains area,where sulfide is widely exposed.While the proportion of evaporites dissolution contributing to riverine sulfate is much higher in downstream in a drier environment.Besides,less precipitation and higher temperature can lead to more intensive evaporation,affecting the process of sulfide oxidation and enhancing the rates of evaporites dissolution and sulfate precipitation in the basin.

关键词： Sulfur and oxygen isotopes Source apportionment Inverse model Arid environment Inland rivers Northwestern China

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风电机组行星齿轮-滚动轴承耦合系统动态特性研究

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太阳能学报 2023年第8期44卷 477-484页

作者：许华超柏厚义秦大同王勇刘长钊重庆电子工程职业学院智能制造与汽车学院重庆401331 重庆大学机械传动国家重点实验室重庆400044 重庆长安望江工业集团有限公司重庆404135

为满足行星齿轮与滚动轴承集成设计需求,基于多体动力学理论和弹性接触理论,提出一种考虑行星齿轮与滚动轴承动态相互影响且能计算各滚动体接触载荷的行星齿轮-滚动轴承耦合系统动力学建模方法。以风电机组行星齿轮滚动轴承系统为研究对... 详细信息

为满足行星齿轮与滚动轴承集成设计需求,基于多体动力学理论和弹性接触理论,提出一种考虑行星齿轮与滚动轴承动态相互影响且能计算各滚动体接触载荷的行星齿轮-滚动轴承耦合系统动力学建模方法。以风电机组行星齿轮滚动轴承系统为研究对象,构建其耦合系统动力学模型,研究行星齿轮与滚动轴承间的耦合作用机理。研究发现:行星齿轮对滚动轴承动态响应影响显著,受齿轮啮合力影响滚动体接触载荷与轴承偏心轨迹呈高频波动特征,设计时应充分评估行星齿轮对滚动轴承动态响应影响。

关键词：风电机组齿轮轴承动态响应动态分析

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斗米虫抗菌肽粗提液抑菌活性及其生化特性研究

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动物营养学报 2023年第1期35卷 673-680页

作者：高诗琪周卫青苏兰徐华潮浙江农林大学林业与生物技术学院杭州311300 浙江省杭州市淳安县林业局杭州311700 浙江省湖州市安吉县灵峰街道办事处湖州313000

本试验旨在测定斗米虫抗菌肽粗提液的蛋白质浓度、抑菌活性与部分生化特性,以期为斗米虫在新型抗生素筛选方面提供理论基础。用浓度均为1.5×108CFU/mL的大肠杆菌和金黄色葡萄球菌等体积混合对斗米虫开展抗菌肽诱导,分别在诱导12、24、3... 详细信息

本试验旨在测定斗米虫抗菌肽粗提液的蛋白质浓度、抑菌活性与部分生化特性,以期为斗米虫在新型抗生素筛选方面提供理论基础。用浓度均为1.5×108CFU/mL的大肠杆菌和金黄色葡萄球菌等体积混合对斗米虫开展抗菌肽诱导,分别在诱导12、24、36、48、60和72 h后提取抗菌肽,利用考马斯亮蓝法测定斗米虫抗菌肽粗提液的蛋白质浓度,采用滤纸片法测定其抑菌活性,同时对其热稳定性、反复冻融稳定性、酸碱稳定性等生化特性进行测定。结果显示:1)经大肠杆菌、金黄色葡萄球菌混合诱导的斗米虫抗菌肽粗提液的蛋白质浓度均极显著高于未诱导的对照组(P<0.01),且在诱导24 h时蛋白质浓度最高;2)斗米虫抗菌肽粗提液仅对金黄色葡萄球菌和枯草芽孢杆菌有抑制作用,对大肠杆菌和铜绿假单胞菌无抑制作用;3)生化特性的测定结果显示,斗米虫抗菌肽粗提液有较好的热稳定性和酸碱稳定性,反复冻融对其抑菌活性影响较小。综上可知,大肠杆菌、金黄色葡萄球菌等体积混合诱导斗米虫,可以产生浓度高、活性强、生化特性较稳定的抗菌肽,该研究结果可为斗米虫作为新型抗生素开发和药物筛选提供理论基础。

关键词：斗米虫抗菌肽抑菌活性生化特性昆虫蛋白质资源

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Biohythane production from two-stage anaerobic digestion of food waste:A review

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Journal of Environmental Sciences 2024年第5期139卷 334-349页

作者： Xiaona An Ying xu Xiaohu Dai State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and EngineeringTongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

The biotransformation of food waste(FW)to bioenergy has attracted considerable research attention as a means to address the energy crisis and waste disposal problems.To this end,a promising technique is two-stage anaerobic digestion(TSAD),in which the FW is transformed to biohythane,a gaseous mixture of biomethane and biohydrogen.This review summarises the main characteristics of FW and describes the basic principle of TSAD.Moreover,the factors influencing the TSAD performance are identified,and an overview of the research status;economic aspects;and strategies such as pre-treatment,co-digestion,and regulation of microbial consortia to increase the biohythane yield from TSAD is provided.Additionally,the challenges and future considerations associated with the treatment of FW by TSAD are highlighted.This paper can provide valuable reference for the improvement and widespread implementation of TSAD-based FW treatment.

关键词： Two-stage anaerobic digestion(TSAD) Food waste(FW) Methane production Hydrogen production

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内激励下弹性边界柔性直齿内齿圈振动响应研究

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机械工程学报 2018年第9期54卷 161-167页

作者：许华超秦大同重庆大学机械传动国家重点实验室

以行星轮系柔性内齿圈为研究对象,为计入拉伸、剪切和弯曲变形等因素,使数学模型更好与工程实际相匹配,根据其结构及边界特点采用平面梁单元建立弹性边界柔性直齿内齿圈的振动分析模型,并对其固有特性进行了研究。基于叠加原理和力向一... 详细信息

以行星轮系柔性内齿圈为研究对象,为计入拉伸、剪切和弯曲变形等因素,使数学模型更好与工程实际相匹配,根据其结构及边界特点采用平面梁单元建立弹性边界柔性直齿内齿圈的振动分析模型,并对其固有特性进行了研究。基于叠加原理和力向一点平移定理,采用组合激振法等效模拟了沿啮合线作用的啮合激励,并从频域角度揭示了啮合激励对弹性边界柔性内齿圈振动响应的影响。研究结果表明,弹性边界柔性内齿圈振型可归结为三类:平移振动模式(内齿圈各点具有相同的运动),弯曲振动模式(内齿圈发生弯曲变形的振动)和扩展振动模式(内齿圈各点仅产生径向振动);啮合激励对扩展振动模式影响较小,而对弯曲振动模式影响显著;对直齿内齿圈而言,弯曲振动模式是引起振动与噪声的主要原因;当扩展振型(波数m=0)发生共振时,内齿圈呈等幅振动;当波数m不为零的振型共振时,内齿圈呈m个波形。

关键词：内齿圈行星轮系弹性边界固有特性振动响应

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Identification of high oxygen-consuming substances in stormwater drainage systems illicitly connected with sewage system

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Journal of Environmental Sciences 2024年第4期138卷 132-140页

作者： Chen xu Zuxin xu Wenhai Chu Shanshan Wu Rong Xiao Lei Su State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Ministry of Education Key Laboratory of Yangtze River Water Environment Tongji UniversityShanghai 200092China Guangzhou Resource Environmental Protection Technology Co. Ltd.Guangzhou 510030China

The dissolved oxygen content in water is an important indicator for assessing the quality of the water environment,and maintaining a certain amount of dissolved oxygen is essential for the healthy development of the ecological environment.When a water body is anoxic,the activity of anaerobic microorganisms increases and organic matter is decomposed to produce a large number of blackening and odorizing substances,resulting in black and odorous water bodies,which is a very common and typical phenomenon in China.Presently,there is still a relatively universal occurrence of illicitly connected stormwater and sewage pipes in the urban drainage pipe network in China,which makes oxygen-consuming substances be directly discharged into rivers through stormwater pipes and consume the dissolved oxygen in the water bodies,resulting in an oxygen deficiency of the water.This induces seasonal or year-round black and stink phenomena in urban rivers.Hence,identifying high oxygen-consuming substances,which lays the foundation for the subsequent removal of oxygen-consuming substances,is essential.Through a series of comparisons of water quality indicators and analysis of organic characteristics,it was found that the oxygen consumption capacity of domestic sewage was higher than that of industrial wastewater in the selected area of this study,and the oxygen-consuming substances of domestic sewage were small molecular amino acids.By comparing 20 conventional free amino acids,it was found that seven of them consumed oxygen easily,and compared with chemical oxygen consumption,biological oxygen consumption was in a leading position.

关键词： Urban drainage system Oxygen-consuming substances Domestic sewage Amino acid

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