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5种杀虫剂对意大利蜜蜂的急性毒性试验与安全性评价

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农药 2017年第4期56卷 279-282页

作者：黎镇非张瑞明钟长文张宝兰黄佳喜梁慧君张宏涛佛山市环境健康与安全评价研究中心广东佛山528000 广东中科英海科技有限公司广东佛山528315

[目的]评价5种常用杀虫剂对陆生生态的安全性。[方法]采用摄入法和触杀法测定虫螨腈、噻唑膦、氟胺氰菊酯、噻虫嗪和烯啶虫胺对意大利蜜蜂的急性毒性,并进行安全性评价。[结果]虫螨腈对意大利蜜蜂经口毒性LC_(50)(48 h)为6.13 mg a.i./L... 详细信息

[目的]评价5种常用杀虫剂对陆生生态的安全性。[方法]采用摄入法和触杀法测定虫螨腈、噻唑膦、氟胺氰菊酯、噻虫嗪和烯啶虫胺对意大利蜜蜂的急性毒性,并进行安全性评价。[结果]虫螨腈对意大利蜜蜂经口毒性LC_(50)(48 h)为6.13 mg a.i./L,对意大利蜜蜂接触毒性LD_(50)(48 h)为0.332μg a.i./只,均为高毒。噻唑膦对意大利蜜蜂经口毒性LC_(50)(48 h)为3.33 mg a.i./L,对意大利蜜蜂接触毒性LD_(50)(48 h)为0.828μg a.i./只,均为高毒。氟胺氰菊酯对意大利蜜蜂经口毒性LC_(50)(48 h)为202 mg a.i./L,为低毒;对意大利蜜蜂接触毒性LD_(50)(48 h)为2.64μg a.i./只,为中毒。噻虫嗪对意大利蜜蜂经口毒性LC_(50)(48 h)为0.141 mg a.i./L,为剧毒;对意大利蜜蜂接触毒性LD_(50)(48 h)为0.00709μg a.i./只,为高毒。烯啶虫胺对意大利蜜蜂经口毒性LC_(50)(48 h)为0.0951 mg a.i./L,为剧毒;对意大利蜜蜂接触毒性LD_(50)(48 h)为0.0324μg a.i./只,为高毒。[结论]上述5种杀虫剂对意大利蜜蜂的急性毒性试验均表现出不同等级的毒性,对陆生生态环境均具有潜在的生态风险。

关键词：杀虫剂意大利蜜蜂急性毒性安全性评价

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颅内生殖细胞肿瘤的个体化治疗

中华神经外科杂志 2017年第3期33卷 260-264页

作者：赵亚鹏张玉琪段虹宇马羽梁晖张庆辉薛超强罗斌潘鑫清华大学医学中心北京100084 清华大学玉泉医院神经外科

目的探讨颅内生殖细胞肿瘤（ICGCTs）的个体化治疗效果。方法回顾性纳入清华大学玉泉医院神经外科2012年10月至2016年6月行手术治疗的ICGCTs患者，共32例。首次术后病理学检查6例为生殖细胞瘤；26例为非生殖细胞瘤性生殖细胞肿瘤（NGGCT... 详细信息

目的探讨颅内生殖细胞肿瘤（ICGCTs）的个体化治疗效果。方法回顾性纳入清华大学玉泉医院神经外科2012年10月至2016年6月行手术治疗的ICGCTs患者，共32例。首次术后病理学检查6例为生殖细胞瘤；26例为非生殖细胞瘤性生殖细胞肿瘤（NGGCTs），其中混合性ICGCTs14例，成熟畸胎瘤4例，未成熟畸胎瘤6例，恶性畸胎瘤1例，绒癌1例。术前4例行化疗；术后16例行化疗，3例行局部放疗，2例行化疗＋局部放疗。结果32例中，平均随访（21．8±13．5）个月；手术全切除17例（53．1％），未全切除15例（46．9％）。12例复发，其中全切除组有3例（3／17），未全切除组9例（9／15），两组复发的比例差异有统计学意义（P=0．027）；有2例复发前后病理学结果不一致。无严重手术相关并发症；6例（18．8％）死亡，其中5例术后未行放、化疗，肿瘤复发死亡。结论显微手术是治疗ICGCTs的一个重要手段，尤其是对NGGCTs，患者可从全切除病变中获益。手术前后个体化的放、化疗对减少复发有益。

关键词：肿瘤生殖细胞和胚胎性神经外科手术化放疗预后

A Survey and Taxonomy of Resource Allocation Methods in Wireless Networks

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Journal of Communications and Information Networks 2021年第4期6卷 372-384页

作者： hui liang Wei zhang School of Electrical Engineering and Intelligentization Dong-guan University of TechnologyDongguan 523808China Peng Cheng Laboratory Shenzhen 518055China School of Electrical Engineering and Telecommunications the University of New South WalesSydneyNSW 2052Australia

Resource allocation is a fundamental and vital issue for arbitrary wireless networks,which can guarantee the network to run efficiently and ***,in the 5G and future 6G networks,numerous distinct wireless network service demands will be requested from various vertical *** to select the most suitable one from these countless methods accurately and efficiently is still a far unsolved *** this survey,we give a comprehensive review of the domain of resource allocation in wireless *** survey begins with an overview of the resource allocation problem in present wireless networks and related works about the review of resource allocation *** then give a novel unified framework by using a six-tuple model for existing resource allocation methods of wireless *** to this model,we categorize these methods into two main classifications,namely single decision maker and multiple decision maker resource *** discussion and representative research results about the above taxonomy are subsequently ***,the conclusion and some promising research opportunities are presented at the end of the survey paper.

关键词： resource allocation optimization theory game theory wireless networks

Symplectic Approach on the Wave Propagation Problem for Periodic Structures with Uncertainty

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Acta Mechanica Solida Sinica 2019年第3期32卷 287-297页

作者： Yan Zhao hui liang Youwei zhang Jiahao Lin State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering Mechanics International Center for Computational Mechanics Dalian University of Technology Dalian 116023 China

An effective method is proposed in this paper for the symplectic eigenvalue problem of a periodic structure with uniform stochastic properties. Since structural parameters are uncertain, the symplectic transfer matrix of a typical substructure, which is described in the state space, also has sto chastic proper ties. An effec tive spec tral st ochastic finite elemen t method is adopted to ensure the symplectic orthogonality of the random symplectic matrix on the premise of certain precision. By means of the Rayleigh quotient method, the symplectic eigenvalue problem of random symplectic matrix is investigated. On the basis of this, the mean value and the standard deviation of the random eigenvalues are fully discussed. The comparison between the numerical results derived from the proposed method and the Monte-Carlo simulation indicates that the proposed method has high precision. This research provides a useful guidance for the dynamic analysis of periodic structures with stochastic properties.

关键词： Periodic structures Spectrum method Random symplectic matrix Symplectic eigenvalue

Research on Auto-detection for Remainder Particles of Aerospace Relay Based on Wavelet Analysis

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Chinese Journal of Aeronautics 2007年第1期20卷 75-80页

作者： GAO Hong-liang zhang hui WANG Shu-juan Department of Electrical Engineering Harbin Institute of Technology Harbin 150001 China

Aerospace relay is one kind of electronic components which is used widely in national defense system and aerospace system. The existence of remainder particles induces the reliability declining, which has become a severe problem in the development of aerospace relay. Traditional particle impact noise detection （PIND） method for remainder detection is ineffective for small particles, due to its low precision and involvement of subjective factors. An auto-detection method for PIND output signals is proposed in this paper, which is based on direct wavelet de-noising （DWD）, cross-correlation analysis （CCA） and homo-filtering （HF）, the method enhances the affectivity of PIND test about the small particles. In the end, some practical PIND output signals are analysed, and the validity of this new method is proved.

关键词： aerospace relay remainder particles PIND wavelet analysis

Effects of carbon content on the microstructure and tensile properties of a low-density steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 391-401页

作者： Yongxuan Shang Mingyu Fan Shuyong Jiang Zhongwu zhang Key Laboratory of Superlight Materials and Surface Technology Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China State Key Laboratory of Metal Material for Marine Equipment and Application Iron&Steel Research Institute of Ansteel Group CorporationAnshan 114009China

Carbon can change the phase components of low-density steels and influence the mechanical *** this study,a new method to control the carbon content and avoid the formation ofδ-ferrite by decarburization treatment was *** microstructural changes and mechanical characteristics with carbon content induced by decarburization were systematically ***-Jaoul(C-J)analysis was employed to examine the work hardening characteristics during the tensile *** decarburization by heat treatments,the carbon content within the austenite phase decreased,while Mn and Al were almost unchanged;this made the steel with full austenite transform into the austenite and ferrite dual ***,(Ti,V)C carbides existed in both matrix phase and the mole fraction almost the *** addition,the formation of other carbides *** loss induced a decrease in strength due to the weakening of the carbon solid *** the steel with the single austinite,the deformation mode of austenite was the dislocation planar glide,resulting in the formation of *** the dual-phase steel,the deformation occurred by the dislocation planar glide of austenite first,with the increase in strain,the cross slip of ferrite took place,forming dislocation cells in *** the late stage of deformation,the work hardening of austinite increased rapidly,while that of ferrite increased slightly.

关键词： low-density steels carbon content decarburization strengthening mechanisms work hardening behavior

Dielectric-ion-conductive ZnNb2O6 layer enabling rapid desolvation and diffusion for dendrite-free Zn metal batteries

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Journal of Energy Chemistry 2025年第1期100卷 693-701页

作者： Haifeng Yang Jian Wang Panpan zhang Xiaomin Cheng Qinghua Guan Jing Dong Bixian Chen Lujie Jia Jing zhang Yongzheng zhang Yunjian Liu Hongzhen Lin School of Materials Science and Engineering Jiangsu University i-Lab & CAS Key Laboratory of Nanophotonic Materials and Devices Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Helmholtz Institute Ulm (HIU) Karlsruhe Institute of Technology (KIT) School of Materials Science and Engineering Xi'an University of Technology State Key Laboratory of Chemical Engineering East China University of Science and Technology

Rechargeable aqueous zinc-metal batteries （AZMBs） are promising candidates for large-scale energy storage systems due to their low cost and high ***,their performance and sustainability are significantly hindered by the sluggish desolvation kinetics at the electrode/electrolyte interface and the corresponding hydrogen evolution reaction where active water molecules tightly participate in the Zn（H2O）62+solvation ***,learnt from self-generated solid electrolyte interphase （SEI） in anodes,the dielectric but ion-conductive zinc niobate nanoparticles artificial layer is constructed on metallic Zn surface （ZNB@Zn）,acting as a rapid desolvation *** zincophilic and dielectric-conductive properties of ZNB layer accelerate interfacial desolvation/diffusion and suppress surface corrosion or dendrite formation,achieving uniform Zn plating/stripping behavior,as confirmed by electronic/optical microscopies and interface spectroscopical measurements together with theoretical ***,the as-prepared ZNB@Zn electrode exhibits excellent cycling stability of over 2000 h and robust reversibility （99.54%） even under high current density and depth of discharge ***,the assembled ZNB@Zn-based full cell displays high capacity-retention rate of 80.21%after 3000 cycles at 5 A g-1and outstanding rate performance up to 10 A *** large-areal pouch cell is stabilized for hundreds of cycles,highlighting the bright prospects of the dielectric but ion-conductive layer in further application of AZMBs.

关键词： Zn metal battery Dielectric artificial layer Rapid ion diffusion Zincophilic diffusion Active water inhibition

Correlation-Aware Replica Prefetching Strategy to Decrease Access Latency in Edge Cloud

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China Communications 2021年第9期18卷 249-264页

作者： Yang liang Zhigang Hu Xinyu zhang hui Xiao School of Computer Science and Engineering Central South UniversityChangsha 410083China School of Informatics Hunan University of Chinese MedicineChangsha 410208China TCM Big Data Analysis Laboratory of Hunan Hunan University of Chinese MedicineChangsha 410208China

With the number of connected devices increasing rapidly,the access latency issue increases drastically in the edge cloud *** low time-constrained and data-intensive mobile applications require efficient replication strategies to decrease retrieval ***,the determination of replicas is not reasonable in many previous works,which incurs high response *** this end,a correlation-aware replica prefetching(CRP)strategy based on the file correlation principle is proposed,which can prefetch the files with high access *** key is to determine and obtain the implicit high-value files effectively,which has a significant impact on the performance of *** achieve the goal of accelerating the acquisition of implicit highvalue files,an access rule management method based on consistent hashing is proposed,and then the storage and query mechanisms for access rules based on adjacency list storage structure are further *** theoretical analysis and simulation results corroborate that CRP shortens average response time over 4.8%,improves average hit ratio over 4.2%,reduces transmitting data amount over 8.3%,and maintains replication frequency at a reasonable level when compared to other schemes.

关键词： edge cloud access latency replica prefetching correlation-aware access rule

Study on Energy Spectrum Instability in the Processes of Propagating and Breaking of Focusing Waves

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China Ocean Engineering 2019年第1期33卷 86-93页

作者： zhang Yi-hui liang Shu-xiu SUN Zhao-chen State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and LimnologyChinese Academy of Sciences State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology

Based on phase focusing theory, focusing waves with different spectral types and breaking severities were generated in a wave flume. The time series of surface elevation fluctuation along the flume were obtained by utilizing 22 wave probes mounted along the mid-stream of the flume. Based on the wave spectrum obtained using fast Fourier transform(FFT), the instability characteristics of the energy spectrum were reported in this paper. By analyzing the variation of total spectral energy, the total spectral energy after wave breaking was found to clearly decrease, and the loss value and ratio gradually increased and tended to stabilize with the enhancement of breaking severity for different spectral types. When wave breaking occurred, the energy loss was primarily in a high-frequency range of f/fp>1.0, and energy gain was primarily in a low-frequency range of f/fp<1.0. As the breaking severity increased, the energy gain-loss ratio decreased gradually, which demonstrates that the energy was mostly dissipated. For plunging waves, the energy gain-loss ratio reached 24% for the constant wave steepness(CWS) spectrum, and was slightly larger at approximately 30% for the constant wave amplitude(CWA) spectrum, and was the largest at approximately 42% for the Pierson-Moskowitz(PM) spectrum.

关键词： phase focusing wave breaking wave surface wave steepness