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工程建设与设计 2024年第10期 152-154页

作者：张良凯席建静中交一公局第九工程有限公司广州511300

结合工程实例,详细阐述了该工程电气照明中的关键技术,包括照明配电箱安装、成套配电柜安装、电缆敷设、槽板配线、钢索配线、开关插座与面板安装以及照明灯具安装等。在每个技术环节中,分别描述了操作步骤、注意事项和常见问题的解决... 详细信息

结合工程实例,详细阐述了该工程电气照明中的关键技术,包括照明配电箱安装、成套配电柜安装、电缆敷设、槽板配线、钢索配线、开关插座与面板安装以及照明灯具安装等。在每个技术环节中,分别描述了操作步骤、注意事项和常见问题的解决方法。

关键词：建筑工程电气照明导线灯具安装

Molecular characterization and gene functional analysis of Dicer-2 gene from Nilaparvata lugens （Hemiptera： Geometroidea）

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Insect Science 2013年第1期20卷 61-68页

作者： Xiao-Yi zhang kai Lu Jia-liang Zhou Qiang Zhou State Key Laboratory of Biological Control and Institute of Entomology Sun Yat-sen University Guangzhou China

Nilaparvata lugens （St^il）（Hemiptera： Geometroidea）, a serious rice pest in many countries of Asia, causes a great loss in rice production every year. RNA interference （RNAi） is a powerful technology for gene fimction study in insects and a potential tool for pest control. As a core component of RNAi pathway, Dicer-2 （Dcr-2） protein determines the production of small interfering RNA （siRNA） and is crucial for the efficiency of RNAi. In this study, the full-length complementary DNA （cDNA） ofN. lugens Dcr-2 （NlDcr-2） was first cloned and analyzed, and then the RNAi experiment was conducted to explore the function ofNlDcr-2 gene. The complete Dcv-2 cDNA ofN. lugens was 4 971 bp in length with an open reading frame （ORF） of 1,656 amino acids. Phylogenetic and protein domain analysis showed that the predicted N1Dcr-2 protein was similar to Tribolium castaneum. In the RNAi experiment, the messenger RNA level of NlDcr-2 was significantly reduced by NlDcr-2 double-stranded RNA （dsRNA）（dsDcr-2）. Fifty-five per cent decrease of N1Dcr-2 was found after 4 days of unremitting feeding. No significant effect was observed on the development ofN. lugens after dsRNA ingestion.

关键词： clone Dicer-2 Nilaparvata lugens RNAi qRT-PCR

Information Conductivity:Universal Performance Measure for Semantic Communications

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China Communications 2024年第7期21卷 17-36页

作者： liang Zijian Niu kai zhang Ping Key Laboratory of Universal Wireless Communications Ministry of Education(Beijing University of Posts and Telecommunications)Beijing 100876China Peng Cheng Laboratory Shenzhen 518055China State Key Laboratory of Networking and Switching Technology(Beijing University of Posts and Telecommunications) Beijing 100876China

As a novel paradigm,semantic communication provides an effective solution for breaking through the future development dilemma of classical communication ***,it remains an unsolved problem of how to measure the information transmission capability for a given semantic communication method and subsequently compare it with the classical communication *** this paper,we first present a review of the semantic communication system,including its system model and the two typical coding and transmission methods for its *** address the unsolved issue of the information transmission capability measure for semantic communication methods,we propose a new universal performance measure called Information *** provide the definition and the physical significance to state its effectiveness in representing the information transmission capabilities of the semantic communication systems and present elaborations including its measure methods,degrees of freedom,and progressive *** results in image transmission scenarios validate its practical applicability.

关键词： information conductivity information transmission capability semantic communications system model universal performance measure

Machining dynamics and chatters in micro-milling:A critical review on the state-of-the-art and future perspectives

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Chinese Journal of Aeronautics 2024年第7期37卷 59-80页

作者： Qingshun BAI Peng WANG kai CHENG liang ZHAO Yabo zhang School of Mechanical and Electrical Engineering Harbin Institute of TechnologyHarbin 150001China Department of Mechanical and Aerospace Engineering Brunel University LondonUxbridge UB83PHUK

Micro-milling technology is widely applied in micro manufacturing,particularly for the fabrication of miniature and micro ***,the chatters and machining dynamics related issues in micro-milling are often the main challenges restricting its machining quality and *** research works have rendered that the machining dynamics and chatters in micro-milling are more complex compared with the conventional macro-milling process,likely because of the size effect and rigidity of the micro-milling system including the tooling,workpiece,process variables,materials involved,and the high-speed milling machines,and further their collective dynamic ***,in this paper,the state of the art focusing on micro-milling chatters and dynamics related issues over the past years are comprehensively and critically reviewed to provide some insights for potential researchers and ***,typical applications and the problems caused by the machining dynamics and chatters in micro-milling have been put forward in this ***,the research on the underlying micro-cutting mechanics and dynamics,stability analysis,chatters detection,and chatter suppression are summarized ***,the underlying scientific and technological challenges are discussed particularly against typical precision engineering ***,the possible future directions and trends in research and development of micro-milling have been discussed.

关键词： Micro-milling Machining dynamics Micro-cutting mechanics Stability lobe diagram(SLD) Chatters suppression Digital twin

Comparative transcriptome analysis reveals key genes and pathways in response to Alternaria alternata apple pathotype infection

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Horticultural Plant Journal 2024年第3期10卷 641-656页

作者： kai Liu Zhaolin liang An Yang Jiadi Yan Peihua Cong Xiaolei Han Caixia zhang Key Laboratory of Horticultural Crop Germplasm Utilization of the Ministry of Agriculture and Rural Affairs(MOA) Research Institute of PomologyChinese Academy of Agricultural SciencesXingchengLiaoning 125100China

Apple leaf spot,caused by the Alternaria alternata apple pathotype(AAAP),is an important fungal disease of *** understand the molecular basis of resistance and pathogenesis in apple leaf spot,the transcriptomes of two apple cultivars‘Hanfu'(HF)(resistant)and‘Golden Delicious'(GD)(susceptible)were analyzed at 0,6,18,24 and 48 h after AAAP inoculation by *** each time point,a large number of significantly differentially expressed genes(DEGs)were screened between AAAP-inoculated and uninoculated apple *** of the common DEGs at four time points revealed significant differences in the resistance of‘HF'and‘GD'apple to AAAP ***,RNL,and JA signal-related genes were upregulated in both cultivars to restrict AAAP ***,genes encoding CNLs,TNLs,WRKYs,and AP2s were only activated in‘HF'as part of the resistance response,of which,some play major roles in the regulation of ET and SA signal *** analysis showed that many DEGs with opposite expression trends in the two hosts may play important regulatory roles in response to AAAP *** expression of one such gene MdERF110 in‘GD'apple leaves improved AAAP ***,this study highlights the reasons for differential resistance to AAAP infection between‘HF'and‘GD'apples which can theoretically assist the molecular breeding of disease-resistant apple crops.

关键词： Apple Transcriptome Alternaria alternata apple pathotype Infection Defense response

Review of Pathogen Identification and Diagnosis Technology of Pinewood Nematode Disease

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Chinese Forestry Science and Technology 2007年第1期6卷 69-76页

作者： zhang kai liang Jun zhang Xingyao Research Institute of Forest Ecology Environmental and Protection Chinese Academy of Forestry Beijing 100091 P.R. China

This article briefly introduced the disease incidence and disservice situation in China. The disease is regarded as cancer in pines for its higher spread and death speed and the difficulty in prevention. Strict quarantine is the main measure on countrol of the disease, for there are many difficulties in the prevention. The most important part of the disease study is the early diagnosis and detection.

关键词： pinewood nematod diseasee pine wilt disease Bursaphelenchus xylophilus pathogen identification diagnosis

Analysis and experimental study on resistance-increasing behavior of composite high efficiency autonomous inflow control device

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Petroleum Science 2024年第2期21卷 1290-1304页

作者： liang-liang Dong Yu-Lin zhang School of Mechatronic Engineering Southwest Petroleum UniversityChengdu610500SichuanChina State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu610500SichuanChina Oil and Gas Equipment Technology Sharing and Service Platform of Sichuan ProvinceChengdu610500SichuanChina

Bottom water coning is the main reason to reduce the recovery of horizontal bottom water reservoir. By water coning, we mean the oil-water interface changes from a horizontal state to a mound-shaped cone and breaks through to the wellbore. Autonomous inflow control device(AICD) is an important instrument maintain normal production after bottom water coning, however, the resistance increasing ability of the swirl type AICD is insufficient at present, which seriously affects the water control effect. Aiming this problem, this paper designs a multi-stage resistance-increasing and composite type AICD. The separation mechanism of oil-water two phases in this structure, the resistance form of oil-water single phase and the resistance-increasing principle of water phase are analyzed. Establishing the dual-phase multi-stage separation and resistance-increasing model, and verified by measuring the throttling pressure drop and oil-water volume fraction of the AICD, it is found that the composite type AICD has the effect of ICD and AICD at the same time, which can balance the production rate of each well section at the initial stage of production, delay the occurrence of bottom water coning. In the middle and later stages of production, water-blocking can be effectively increased to achieve water control and stable *** structural sensitivity analysis, the influence law of various structural parameters on the water control performance of composite AICD was obtained. The simulation calculation results show that,compared with the existing swirl type AICD, composite AICD has higher sensitivity to moisture content,the water phase throttling pressure drop is increased by 4.5 times on average. The composite AICD is suitable for the entire stage of horizontal well production.

关键词： Water control Flow separation Flow resistance-increasing AICD device Simulation and experiment

Regeneration of photovoltaic industry silicon waste toward high-performance lithium-ion battery anode

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Rare Metals 2024年第10期43卷 4948-4960页

作者： kai Wang Xiao-Bin Zhong Yue-Xian Song Yao-Hui zhang Yan-Gang zhang Xiao-Gang You Pu-Guang Ji Kurbanov Mirtemir Shodievich Umedjon Khalilov Gong-kai Wang Xin zhang Xing-liang Yao Feng Li Jun-Fei liang Hua Wang School of Energy and Power Engineering North University of China Zhongyuan Critical Metals Laboratory Zhengzhou University Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology School of Material Science and EngineeringHebei University of Technology Arifov Institute of Ion-Plasma and Laser Technologies Academy of Sciences of the Republic of Uzbekistan New Uzbekistan University Arifov Institute of Ion-Plasma and Laser Technologies Academy of Sciences of Uzbekistan University of Antwerp School of Chemistry Beihang University

The diamond-wire sawing silicon waste（DWSSW） from the photovoltaic industry has been widely considered as a low-cost raw material for lithium-ion battery silicon-based electrode,but the effect mechanism of impurities presents in DWSSW on lithium storage performance is still not well understood;meanwhile,it is urgent to develop a strategy for changing DWSSW particles into high-performance electrode *** this work,the occurrence state of impurities presents in DWSSW was carefully analyzed using in situ Ar ion etching technology Then,the novel Si@C@SiOx@PAl-NDC composite was designed through in situ encapsulation *** obtained Si@C@SiOx@PAl-NDC electrode shows a high first capacity of 2343.4 mAh·g-1with an initial Coulombic efficiency （ICE） of 84.4%under current density of 1.0 A·g-1,and can deliver an impressive capacity of 984.9 mAh·g-1after 200 *** numerical simulation modeling calculations,the increase in proportion of Si4+/Si0and Si3+/Si0valence states in SiOxlayer leads to a decrease in von Mises stress,which ultimately improves the cycling structural ***,the porous 2D-3D aluminum/nitrogen （Al/N） co-doped carbon layer and nanowires on SiOxlayer can provide abundant active sites for lithium storage due to its developed hierarchical pores structure,which facilitates ion transport What is more,the performance of Si@C@SiOx@PAl-NDC//LiFePO4full cell shows its great potential in practical application.

关键词： Aluminum/nitrogen co-doped In situ encapsulation Lithium-ion batteries Porous carbon nanowires Sawing silicon waste

Microdeletion on Xq27.1 in a Chinese VACTERL-Like Family with Kidney and Anal Anomalies

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Biomedical and Environmental Sciences 2024年第5期37卷 503-510页

作者： LI Min zhang Yu Lan zhang kai Li LI Ping Ping LYU Yu Han liang Ya Xin YU Yue Department of Gynecology and Obstetrics Beijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical SciencesBeijing 100730China Chinese Academy of Medical Sciences and Peking Union Medical College Beijing HospitalBeijing 100730China The Key Laboratory of Geriatrics Beijing Institute of GeriatricsBeijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical SciencesBeijing 100730China

Objective VATER/VACTERL-like association is associated with adverse pregnancy *** evidence of this disorder is *** this study,we aimed to provide genetic insights to improve the diagnosis of *** We have described a Chinese family in which four members were affected by renal defects or agenesis,anal atresia,and anovaginal fistula,which is consistent with the diagnosis of a VACTERL-like *** and genetic analyses were conducted using genome and exome *** Segregation analysis revealed the presence of a recessive X-linked microdeletion in two living affected individuals,harboring a 196–380 kb microdeletion on Xq27.1,which was identified by familial exome *** sequencing was performed on the affected male,confirming a-196 kb microdeletion in Xq27.1,which included a 28%loss of the CDR-1 *** family members were included in the co-segregation analysis,and only VACTERL-like cases with microdeletions were reported in *** These results suggest that the 196–380 kb microdeletion in Xq27.1 could be a possible cause of the VATER/VACTERL-like ***,further genetic and functional analyses are required to confirm or rule out genetic background as the definitive cause of the VACTERL association.

关键词： Prenatal diagnosis VACTERL whole-genome sequencing whole-exome sequencing X-linked

Lanthanide-based microlasers:Synthesis,structures,and biomedical applications

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Nano Research 2024年第1期17卷 97-111页

作者： Qian zhang Yawei Liu kai Liu Hongjie zhang Engineering Research Center of Advanced Rare Earth Materials(Ministry of Education) Department of ChemistryTsinghua UniversityBeijing 100084China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Xiangfu Laboratory Jiaxing 314102China

The large size of lasers limits their applications in confined spaces,such as in biosensing and in vivo brain tissue *** this regard,micron-sized lasers have been *** exhibit great potential for biological detecting,remote sensing,and depth tracking due to their small sizes,sensitive properties of their spectral fingerprints,and flexible positional modulation in the ***-based luminescent materials that possess long excited-state lifetime,narrow emission bandwidth,and upconversion behaviors are promising as gain mediums for novel *** addition,lanthanide-based microlasers could be generated under natural ambient conditions with pumped or continuous light sources,which significantly promotes the practical applications of *** progress in the design,synthesis,and biomedical applications of lanthanide-based microlasers has been outlined in this *** ions doped and upconverted lanthanide-based microlasers are highlighted,which exhibit advantageous structures,miniaturized dimensions,and high lasing *** applications of lanthanide-based microlasers are further discussed,the upconverted microlasers show great advantages for biological applications owing to their tunable excitation and emission characteristics and excellent environmental ***,perspectives and challenges in the field of lanthanide-based microlasers are presented.

关键词： microlasers lanthanide-based luminescent materials upconversion nanoparticles biological applications