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Development and tests of sliding contact line-powered track transporter

International Journal of Agricultural and Biological Engineering 2023年第4期16卷 68-75页

作者： yihua jiang Fang Yang Zihao Zhang Shanjun Li College of Engineering Huazhong Agricultural UniversityWuhan 430070China China Agriculture(Citrus)Research System Wuhan 430070China National R&D Center for Citrus Preservation Wuhan 430070China Citrus Mechanization Research Base Ministry of Agriculture and Rural AffairsWuhan 430070China Key Laboratory of Agricultural Equipment in Mid-lower Yangtze River Ministry of Agriculture and Rural AffairsWuhan 430070China

In order to solve the problems of complexity of control systems and the limited power supply of traditional fuelpowered and battery-driven transporters operating in mountainous orchards,a sliding contact line-powered track transporter was designed and manufactured based on theoretical calculations.Key components of the transporter were developed such as a PLC-based(programmable logic controller)control system,a sliding contact power supply,and transmission system,and a position limit device.The functions and performance of designed transporter were tested.The test results showed that the transporter exhibited a high stability of operation with an average operation velocity of 0.70 m/s,the maximum working slope of 48°,the maximum load of 400 kg,and the maximum remote control distance reaching 1482 m.When the power supply circuit of sliding contact line was 108.8 m in length,the maximum voltage drop was 2.4 V,and the maximum power loss was 174.72 W,which were close to the theoretical calculation values.With a single power supply cabinet,the transporter can operate normally for a maximum track distance of 175.69 m.All the technical indicators of the transporter met the design requirements,and the above-mentioned problems such as complexity of the control system and limited energy supply of the traditional mountain orchard transporter were well solved.This study can provide reference for the design and optimization of mountain orchard transporter.

关键词： mountain orchard transporter remote control sliding contact line voltage drop

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“文明以止,人文化成”与“人的自由而全面发展”的内在契合性

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学术前沿 2024年第11期 11-24页

作者：姜义华复旦大学历史系

文明以止,人文化成,是中华文明最具特色的文化基因。这一基因携带着中华文明传承的主要特征和基本功能的核心信息,决定着中华文明生命体的基本构造和基本走向,与历史唯物主义能动地结合,谱写了历史唯物主义的新篇章。历史唯物主义的创... 详细信息

文明以止,人文化成,是中华文明最具特色的文化基因。这一基因携带着中华文明传承的主要特征和基本功能的核心信息,决定着中华文明生命体的基本构造和基本走向,与历史唯物主义能动地结合,谱写了历史唯物主义的新篇章。历史唯物主义的创新性发展在于创造了具有确定内涵的“文明新形态”,将经济、政治、社会、文化与生态融为一体,将物质生产活动、精神生产活动与制度生产活动融为一体,创造性地传承中华文明“人文化成”的优秀遗产,为真正全面地占有“人的本质”,实现每个人自由而全面的发展提供了符合中国历史与现实的具体方案,开辟了切实可行的路径。

关键词：历史唯物主义中华文明人文化成人的本质

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何谓卓越教师:实然描述、应然呈现及其实践意蕴

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教育研究与实验 2024年第2期 121-128页

作者：王钢蒋亦华淮阴师范学院对外合作处中国矿业大学公共管理学院徐州221116 淮阴师范学院教师教育协同创新研究中心淮安223301

我国卓越教师的政策与学界描述均表现出一定局限性,并未解决卓越教师“是什么”的问题。应然意义的卓越教师,是教师教育卓越取向的中国化表示,对新时代好教师诉求的具体回应,以及未来教师荣誉制度的组成部分。卓越教师标准的建构应以专... 详细信息

我国卓越教师的政策与学界描述均表现出一定局限性,并未解决卓越教师“是什么”的问题。应然意义的卓越教师,是教师教育卓越取向的中国化表示,对新时代好教师诉求的具体回应,以及未来教师荣誉制度的组成部分。卓越教师标准的建构应以专业品质、专业知识、专业能力为维度,在此基础上进行层级化的独特表达。卓越教师“是什么”的讨论以及相应标准建构,有助于深化本土意义卓越教师理论,对优化政府、师范生培养高校、中小学、教师等不同主体的实践行为有规约与引领意义。

关键词：卓越教师教师教育教师荣誉制度

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Controllable chemical redox reactions to couple microbial degradation for organic contaminated sites remediation:A review

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Journal of Environmental Sciences 2024年第5期139卷 428-445页

作者： Bin Chen jiang Xu Lizhong Zhu College of Environmental and Resource Sciences Zhejiang UniversityHangzhou 310058China Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control Zhejiang UniversityHangzhou 310058China Zhejiang Agriculture&Forest University Lin'an 311300China

Global environmental concern over organic contaminated sites has been progressively conspicuous during the process of urbanization and industrial restructuring.While traditional physical or chemical remediation technologies may significantly destroy the soil structure and function,coupling moderate chemical degradation with microbial remediation becomes a potential way for the green,economic,and efficient remediation of contaminated sites.Hence,this work systematically elucidates why and how to couple chemical technology with microbial remediation,mainly focused on the controllable redox reactions of organic contaminants.The rational design of materials structure,selective generation of reactive oxygen species,and estimation of degradation pathway are described for chemical oxidation.Meanwhile,current progress on efficient and selective reductions of organic contaminants(i.e.,dechlorination,defluorination,-NO_(2) reduction)is introduced.Combined with the microbial remediation of contaminated sites,several consideration factors of how to couple chemical and microbial remediation are proposed based on both fundamental and practical points of view.This review will advance the understanding and development of chemical-microbial coupled remediation for organic contaminated sites.

关键词： Soil remediation Groundwater remediation Rational design Reactive species Environmental nanotechnology

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Response of ocean acidification to atmospheric carbon dioxide removal

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Journal of Environmental Sciences 2024年第6期140卷 79-90页

作者： Jiu jiang Long Cao Xiaoyu Jin Zechen Yu Han Zhang Jianjie Fu Guibin jiang School of Environment Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Key Laboratory of Geoscience Big Data and Deep Resources of Zhejiang Province School of Earth SciencesZhejiang UniversityHangzhou 310058China Zhejiang Climate Center Hangzhou 310052China

Artificial CO_(2)removal from the atmosphere(also referred to as negative CO_(2)emissions)has been proposed as a potential means to counteract anthropogenic climate change.Here we use an Earth system model to examine the response of ocean acidification to idealized atmospheric CO_(2)removal scenarios.In our simulations,atmospheric CO_(2)is assumed to increase at a rate of 1%per year to four times its pre-industrial value and then decreases to the pre-industrial level at a rate of 0.5%,1%,2%per year,respectively.Our results show that the annual mean state of surface ocean carbonate chemistry fields including hydrogen ion concentration([H^(+)]),pH and aragonite saturation state respond quickly to removal of atmospheric CO_(2).However,the change of seasonal cycle in carbonate chemistry lags behind the decline in atmospheric CO_(2).When CO_(2)returns to the pre-industrial level,over some parts of the ocean,relative to the pre-industrial state,the seasonal amplitude of carbonate chemistry fields is substantially larger.Simulation results also show that changes in deep ocean carbonate chemistry substantially lag behind atmospheric CO_(2)change.When CO_(2)returns to its pre-industrial value,the whole-ocean acidity measured by[H^(+)]is 15%-18%larger than the pre-industrial level,depending on the rate of CO_(2)decrease.Our study demonstrates that even if atmospheric CO_(2)can be lowered in the future as a result of net negative CO_(2)emissions,the recovery of some aspects of ocean acidification would take decades to centuries,which would have important implications for the resilience of marine ecosystems.

关键词： Carbon dioxide removal Net negative CO_(2)emission Ocean acidification Climate change Earth system modeling

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Progress in gut microbiota-host interaction

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Science China(Life Sciences) 2024年第5期67卷 851-853页

作者： Changtao jiang Department of Immunology School of Basic Medical SciencesNHC Key Laboratory of Medical ImmunologyPeking UniversityBeijing 100191China

Recently,the gut microbiota has been recognized as a novel endocrine organ in the human body.It produces various bioactive metabolites and participates in metabolic processes.In addition,the gut microbiota is involved in the metabolism of drugs and natural components,which in turn influences the effects of various oral medications.

关键词： metabolism drugs processes

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Aberrant protamination in sperm correlates to anomalous nuclear and cytoplasmic architectures in infertile males with sperm dysmorphology

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Asian Journal of Andrology 2024年第2期26卷 183-188页

作者： Huan jiang Chu-Jie Huang Department of Reproductive Endocrinology Longgang District Maternity&Child Healthcare Hospital of Shenzhen City(Longgang Maternity and Child Institute of Shantou University Medical College)Shenzhen 518172China Institute of Reproductive Immunology College of Life Science and TechnologyJinan UniversityGuangzhou 510632China

Aberrant sperm protamination is linked to sperm dysmorphology and nuclear chromatin condensation.Yet,its effects on sperm cytoplasmic maturation remain largely unexplored.The relationships of protamines,sperm morphology,DNA damage,and cytoplasmic remodeling were illustrated in this study to provide fresh perspectives on the mechanisms of male infertility.A total of 205 infertile males were allocated into 5 groups according to the percentage of spermatozoa exhibiting abnormal morphology within their samples.Sperm concentration,motility,abnormal sperm morphology,cytoplasmic droplets(CDs),and excess residual cytoplasm(ERC)were analyzed according to the World Health Organization manual(2010).Sperm nuclear vacuoles(NVs)were determined by propidium iodide(PI)staining.Sperm protamine expressions(P1 and P2)were detected by western blot.DNA damage was measured by acridine orange test(AOT)to calculate the proportion of sperm with single-strand DNA breaks(SSBs).Our data showed that sperm concentration and motility in infertile males significantly decreased with the severity of abnormal sperm morphology(both P<0.01).P1 level,P1/P2 ratio,and SSB rate increased with the severity of sperm dysmorphology,whilst the P2 level decreased(all P

关键词： abnormal sperm morphology excess residual cytoplasm male infertility protamines sperm DNA damage sperm nuclear vacuoles

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Revolutionizing tumor immunotherapy:unleashing the power of progenitor exhausted T cells

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Cancer Biology & Medicine 2024年第6期21卷 499-512页

作者： Zhang Fang Xinyi Ding Hao Huang Hongwei jiang Jingting jiang Xiao Zheng Department of Tumor Biological Treatment The Third Affiliated Hospital of Soochow University jiangsu Engineering Research Center for Tumor Immunotherapy The Third Affiliated Hospital of Soochow University Institute for Cell Therapy of Soochow University The Third Affiliated Hospital of Soochow University

In exploring persistent infections and malignancies, a distinctive subgroup of CD8+T cells, progenitor exhausted CD8+T（Tpex） cells, has been identified. These Tpex cells are notable for their remarkable self-renewal and rapid proliferation abilities. Recent strides in immunotherapy have demonstrated that Tpex cells expand and differentiate into responsive exhausted CD8+T cells, thus underscoring their critical role in the immunotherapeutic retort. Clinical examinations have further clarified a robust positive correlation between the proportional abundance of Tpex cells and enhanced clinical prognosis. Tpex cells have found noteworthy applications in the formulation of inventive immunotherapeutic approaches against tumors. This review describes the functions of Tpex cells in the tumor milieu, particularly their potential utility in tumor immunotherapy. Precisely directing Tpex cells may be essential to achieving successful outcomes in immunotherapy against tumors.

关键词： Progenitor exhausted CD8 T cells TCF-1 cellular crosstalk immunotherapy tumor microenvironment

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An improved initial rotor position estimation method using high-frequency pulsating voltage injection for PMSM

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Defence Technology（防务技术） 2024年第3期33卷 19-29页

作者： Yang jiang Ming Cheng School of Electrical Engineering Southeast UniversityNanjing 210096China

High frequency pulsating voltage injection method is a good candidate for detecting the initial rotor position of permanent magnet synchronous motor.However,traditional methods require a large number of filters,which leads to the deterioration of system stability and dynamic performance.In order to solve these problems,a new signal demodulation method is proposed in this paper.The proposed new method can directly obtain the amplitude of high-frequency current,thus eliminating the use of filters,improving system stability and dynamic performance and saving the work of adjusting filter parameters.In addition,a new magnetic polarity detection method is proposed,which is robust to current measurement noise.Finally,experiments verify the effectiveness of the method.

关键词： Initial position detection Signal demodulation algorithm Magnetic polarity detection Filter elimination

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Do nocturnal birds use acoustic and visual cues to avoid predation by bats?

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Integrative Zoology 2024年第3期19卷 524-537页

作者： Lixin GONG Huan WU Zhiqiang WANG Hui WU jiang FENG Tinglei jiang Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization Northeast Normal UniversityChangchunChina Key Laboratory of Vegetation Ecology of Education Ministry Institute of Grassland ScienceNortheast Normal UniversityChangchunChina College of Life Science Jilin Agricultural UniversityChangchunChina

Anti-predation strategies are critical to animal survival and are fundamental to deciphering predator–prey interactions.As an important defense strategy,sensory predator detection(such as through acoustic and visual cues)enables animals to assess predation risk and execute predator-avoidance behavior;however,there are limited studies on the anti-predation behavior of nocturnal animals.The prey of bats provides an excellent representative system for examining the anti-predation behavior of nocturnal animals.Here,we broadcasted different types of echolocation calls of the bird-eating bat Ia io to two wild passerine birds,namely,Zosterops japonicus and Sinosuthora webbiana,that are preyed upon by I.io,and presented the birds with individual bats under different light intensities.The results showed that both bird species were able to perceive the low-frequency audible portion of the bats’echolocation calls;however,they did not exhibit escape responses to the acoustic stimuli.In the dark and under moonlit conditions,both bird species were unable to respond to active bats at close range and the birds only exhibited evasive flight behavior when bats approached or touched them.These results suggest that nocturnal passerine birds may not be able to use acoustic or visual cues to detect bats and adopt evasive maneuvers to avoid predation.This work suggests that bat predation pressure may not elicit primary predator-avoidance responses in nocturnal passerine birds.The results provide new insights into the anti-predation behavior of nocturnal animals.

关键词： anti-predation behavior nocturnal animals sensory cues sensory defenses

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