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International Journal of Extreme Manufacturing 2022年第4期4卷 102-146页

作者： Jing Li Wentao Zhong Qiang Deng qimeng zhang Chenghao Yang Guangzhou Key Laboratory for Surface Chemistry of Energy Materials New Energy Research InstituteSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510006People’s Republic of China

Nickel-rich layered oxides have been identified as the most promising commercial cathode materials for lithium-ion batteries(LIBs)for their high theoretical specific capacity.However,the poor cycling stability of nickel-rich cathode materials is one of the major barriers for the large-scale usage of LIBs.The existing obstructions that suppress the capacity degradation of nickel-rich cathode materials are as a result of phase transition,mechanical instability,intergranular cracks,side reaction,oxygen loss,and thermal instability during cycling.Core–shell structures,oxidating precursors,electrolyte additives,doping/coating and synthesizing single crystals have been identified as effective methods to improve cycling stability of nickel-rich cathode materials.Herein,recent progress of surface modification,e.***.coating and doping,in nickel-rich cathode materials are summarized based on Periodic table to provide a clear understanding.Electrochemical performances and mechanisms of modified structure are discussed in detail.It is hoped that an overview of synthesis and surface modification can be presented and a perspective of nickel-rich materials in LIBs can be given.

关键词： nickel-rich layered oxides capacity degradation surface modification single-crystal cathode

Constructing oxygen-deficient V_(2)O_(3)@C nanospheres for high performance potassium ion batteries

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Chinese Chemical Letters 2023年第3期34卷 507-511页

作者： Qiang Deng Luolan Wang Jing Li Qian Cheng Xiaozhao Liu Changdong Chen qimeng zhang Wentao Zhong Hua Wang Lijue Wu Chenghao Yang Guangzhou Key Laboratory for Surface Chemistry of Energy Materials New Energy Research InstituteSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510006China Guangdong Jiana Energy Technology Co. Ltd.Qingtang TownYingde 513056China

Potassium ion batteries(PIBs) have been regarded as promising alternatives to lithium ion batteries(LIBs)on account of their abundant resource and low cost in large scale energy storage applications. However,it still remains great challenges to explore suitable electrode materials that can reversibly accommodate large size of potassium ions. Here, we construct oxygen-deficient V_(2)O_(3)nanoparticles encapsulated in amorphous carbon shell(Od-V_(2)O_(3)@C) as anode materials for PIBs by subtly combining the strategies of morphology and deficiency engineering. The MOF derived nanostructure along with uniform carbon coating layer can not only enables fast K+migration and charge transfer kinetics, but also accommodate volume change and maintain structural stability. Besides, the introduction of oxygen deficiency intrinsically tunes the electronic structure of materials according to DFT calculation, and thus lead to improved electrochemical performance. When utilized as anode for PIBs, Od-V_(2)O_(3)@C electrode exhibits superior rate capability(reversible capacities of 262.8, 227.8, 201.5, 179.8, 156.9 mAh/g at 100, 200, 500, 1000 and2000 mA/g, respectively), and ultralong cycle life(127.4 mAh/g after 1000 cycles at 2 A/g). This study demonstrates a feasible way to realize high performance PIBs through morphology and deficiency engineering.

关键词： V_(2)O_(3)@C Nanospheres Oxygen deficiency Potassium ion batteries Anode

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机场跑道区黏性土与灰岩地基加固施工技术

建筑机械化 2024年第5期45卷 116-118页

作者：张启梦昆明理工大学国土资源工程学院云南昆明650093

为减小机场运营期间的跑道不均匀沉降,在地质岩性构成的基础上,从机场跑道预加固、浅部黏性土加固、深部防渗帷幕等三方面,详细阐明了浅部黏性土与深部灰岩场区跑道地基土加固施工技术,有效地阻断了深部灰岩再次溶蚀的现象,极大地节约... 详细信息

为减小机场运营期间的跑道不均匀沉降,在地质岩性构成的基础上,从机场跑道预加固、浅部黏性土加固、深部防渗帷幕等三方面,详细阐明了浅部黏性土与深部灰岩场区跑道地基土加固施工技术,有效地阻断了深部灰岩再次溶蚀的现象,极大地节约了成本,有效地解决了后续可能发生的沉降问题,为后续工程实施提供了坚实保障。

关键词：机场跑道深厚加固灰土桩挤密法防渗帷幕预加固

基于多源热泵协同优化的区域综合能源系统经济调度

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电器与能效管理技术 2024年第4期 13-21页

作者：姜涛周慧娟张启蒙周炜然许真国网重庆市电力公司市北供电分公司重庆401147 国网河南省电力公司营销服务中心河南郑州450000 国网天津市电力公司城东供电分公司天津300250 国网四川省电力公司苍溪县供电分公司四川广元628000

为探究电、气热泵协同优化效果,提出多源热泵协同运行的区域综合能源系统(RIES)经济调度方法。首先,对电、气热泵技术特性进行对比阐述,并基于能量枢纽对电、气热泵多能互补运行工况下系统各类能量流进行分析;其次,根据电、气能源价格优... 详细信息

为探究电、气热泵协同优化效果,提出多源热泵协同运行的区域综合能源系统(RIES)经济调度方法。首先,对电、气热泵技术特性进行对比阐述,并基于能量枢纽对电、气热泵多能互补运行工况下系统各类能量流进行分析;其次,根据电、气能源价格优势,在谷电时段利用电热泵进行电冷能源耦合供能,在电价高峰时段通过气热泵进行气冷替代供能,改善系统用电负荷峰谷特性与降低运行成本;最后,以系统成本最优建立电、气热泵协同优化调度模型,采用CPLEX软件进行求解。算例表明:电、气热泵协同运行能够充分发挥二者优势,降低系统运行成本的同时优化联络线交互功率波动,并且所提出的方法具有良好的环保效益。

关键词：区域综合能源系统空气源热泵天然气热泵峰谷特性优化调度

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Development of Spectral Features for Monitoring Rice Bacterial Leaf Blight Disease Using Broad-Band Remote Sensing Systems

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Phyton-International Journal of Experimental Botany 2024年第4期93卷 745-762页

作者： Jingcheng zhang Xingjian Zhou Dong Shen qimeng Yu Lin Yuan Yingying Dong College of Artificial Intelligence Hangzhou Dianzi UniversityHangzhou310018China School of Information Engineering Zhejiang University of Water Resources and Electric PowerHangzhou310018China Key Laboratory of Digital Earth Science Aerospace Information Research InstituteChinese Academy of SciencesBeijing100094China

As an important rice disease, rice bacterial leaf blight (RBLB, caused by the bacterium Xanthomonas oryzae pv.oryzae), has become widespread in east China in recent years. Significant losses in rice yield occurred as a result ofthe disease’s epidemic, making it imperative to monitor RBLB at a large scale. With the development of remotesensing technology, the broad-band sensors equipped with red-edge channels over multiple spatial resolutionsoffer numerous available data for large-scale monitoring of rice diseases. However, RBLB is characterized by rapiddispersal under suitable conditions, making it difficult to track the disease at a regional scale with a single sensorin practice. Therefore, it is necessary to identify or construct features that are effective across different sensors formonitoring RBLB. To achieve this goal, the spectral response of RBLB was first analyzed based on the canopyhyperspectral data. Using the relative spectral response (RSR) functions of four representative satellite or UAVsensors (i.e., Sentinel-2, GF-6, Planet, and Rededge-M) and the hyperspectral data, the corresponding broad-bandspectral data was simulated. According to a thorough band combination and sensitivity analysis, two novel spectralindices for monitoring RBLB that can be effective across multiple sensors (i.e., RBBRI and RBBDI) weredeveloped. An optimal feature set that includes the two novel indices and a classical vegetation index was formed.The capability of such a feature set in monitoring RBLB was assessed via FLDA and SVM algorithms. The resultdemonstrated that both constructed novel indices exhibited high sensitivity to the disease across multiple sensors.Meanwhile, the feature set yielded an overall accuracy above 90% for all sensors, which indicates its cross-sensorgenerality in monitoring RBLB. The outcome of this research permits disease monitoring with different remotesensing data over a large scale.

关键词： Rice bacterial leaf blight analysis of spectral response multispectral data simulation vegetation indices cross-sensor disease monitoring

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植物乳杆菌WLPL04的荧光标记及其表征

南昌大学学报（理科版） 2024年第2期48卷 156-165页

作者：钟常城王祺安张启蒙赵香香王志跃魏华陶雪莹南昌大学食品科学与资源挖掘全国重点实验室江西南昌330047 南昌大学中德联合研究院江西南昌330047 南昌大学国际食品创新研究院有限公司江西南昌330299

植物乳杆菌WLPL04源自健康母乳,能在肠道定植。对植物乳杆菌WLPL04进行荧光标记,为研究其在体内的定植、移位及分布提供重要实验材料。以pMG36e为骨架,含3种不同启动子(P_(X),P_(23)和P_(ldh))的mCherry红色荧光蛋白基因作为标记基因,... 详细信息

植物乳杆菌WLPL04源自健康母乳,能在肠道定植。对植物乳杆菌WLPL04进行荧光标记,为研究其在体内的定植、移位及分布提供重要实验材料。以pMG36e为骨架,含3种不同启动子(P_(X),P_(23)和P_(ldh))的mCherry红色荧光蛋白基因作为标记基因,构建重组质粒pMG36e-P_(X)-mCherry、pMG36e-P_(23)-mCherry和pMG36e-P_(ldh)-mCherry,转化大肠杆菌,通过PCR、质粒DNA酶切、菌落颜色观察和激光共聚焦显微镜观察进行验证。验证构建成功后进一步将3种重组质粒分别导入植物乳杆菌WLPL04。结果显示导入质粒pMG36e-P_(X)-mCherry、pMG36e-P_(23)-mCherry的植物乳杆菌WLPL04,其菌体在激光共聚焦显微镜下均显示明显红色荧光;而导入pMG36e-P_(ldh)-mCherry的菌体其红色荧光较弱。此外,通过生长曲线和扫描电镜观察分析不同重组质粒对菌株生长及形态的影响,结果表明3种质粒对植物乳杆菌WLPL04的生长及菌体形态没有显著影响。以上结果表明植物乳杆菌WLPL04已被红色荧光蛋白mCherry成功标记,可为后续研究其在体内的定植、移位及分布提供重要实验材料。

关键词：植物乳杆菌WLPL04 mCherry荧光标记启动子表达

Recess-free enhancement-mode AlGaN/GaN RF HEMTs on Si substrate

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Journal of Semiconductors 2024年第6期45卷 81-86页

作者： Tiantian Luan Sen Huang Guanjun Jing Jie Fan Haibo Yin Xinguo Gao Sheng zhang Ke Wei Yankui Li qimeng Jiang Xinhua Wang Bin Hou Ling Yang Xiaohua Ma Xinyu Liu High-Frequency High-Voltage Device and Integrated Circuits R&D Center Institute of Microelectronics of Chinese Academy of SciencesBe i-jing 100029China School of integrated Circuits University of Chinese Academy of SciencesBeijing 100049China Faculty of integrated Circuits Xidian UniversityXi’an 710071China

Enhancement-mode(E-mode)GaN-on-Si radio-frequency(RF)high-electron-mobility transistors(HEMTs)were fabri-cated on an ultrathin-barrier(UTB)AlGaN(<6 nm)/GaN heterostructure featuring a naturally depleted 2-D electron gas(2DEG)channel.The fabricated E-mode HEMTs exhibit a relatively high threshold voltage(VTH)of+1.1 V with good uniformity.A maxi-mum current/power gain cut-off frequency(fT/fMAX)of 31.3/99.6 GHz with a power added efficiency(PAE)of 52.47%and an out-put power density(Pout)of 1.0 W/mm at 3.5 GHz were achieved on the fabricated E-mode HEMTs with 1-μm gate and Au-free ohmic contact.

关键词： AlGaN/GaN heterostructure ultrathin-barrier enhancement-mode radio-frequency power added efficiency silicon substrate

Allotetraploidization event of Coptis chinensis shared by all Ranunculales

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Horticultural Plant Journal 2024年第1期10卷 288-303页

作者： Yan zhang Weina Ge Jia Teng Yanmei Yang Jianyu Wang Zijian Yu Jiaqi Wang qimeng Xiao Junxin Zhao Shaoqi Shen Yishan Feng Shoutong Bao Yu Li Yuxian Li Tianyu Lei Yuxin Pan Lan zhang Jinpeng Wang Department of Bioinformatics School of Life SciencesNorth China University of Science and TechnologyTangshanHebei 063000China School of Life Sciences North China University of Science and TechnologyTangshanHebei 063000China State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of ScienceBeijing 100093China University of Chinese Academy of Sciences Beijing 100049China

Coptis chinensis Franch.,also named Chinese goldthread is a member of Ranunculaceae in the order Ranunculales and represents an important lineage of early eudicots with traditional medicinal value.In our study,by using syntenic analysis combined with phylogenomic analysis of C.chinensis and four other representative genomes from basal and core eudicots,we confirmed that the WGD event in C.chinensis was shared by Aquilegia coerulea and Papaver somniferum L.and quickly occurred after Ranunculales diverged from other eudicots,likely a Ranunculales common tetraploidization(RCT).The synonymous nucleotide substitutions at synonymous sites distribution of syntenic blocks across these genomes showed that the evolutionary rate of the P.somniferum genome is faster than that of the C.chinensis genome by approximately 13.7%,possibly due to Papaveraceaes having an additional special tetraploidization event(PST).After Ks correction,the RCT dated to 115—130 million years ago(MYA),which was close to the divergence of Ranunculaceaes and Papaveraceaes approximately115.45—130.51 MYA.Moreover,we identified homologous genes related to polyploidization and speciation and constructed multiple sequence alignments with different reference genomes.Notably,the event-related subgenomes in the basal genomes all showed genomic fractionation bias,suggesting a likely allopolyploid nature of the RCT,PST and T-Alpha and T-Beta events in Tetracentron sinense.In addition,we detected that the sixteen P450 subfamilies were markedly expanded in the genomes of Ranunculales,and most of them were related to the RCT and PST events.We constructed a new platform for Early Eudicot Comparative Genomic Research(http://www.***.top/index.html)to store more information.In summary,our findings support the WGD of C.chinensis shared by Ranunculales,which is likely an allotetraploidization event.This present effort offered new insights into the evolution of key polyploidization events and the genes related to secondary metabolites during the diversification of ea

关键词： Coptis chinensis Ranunculales Polyploidization Genomic fractionation P450 genes

Functional gastrointestinal disorders, mental health, genetic susceptibility, and incident chronic kidney disease

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中华医学杂志(英文版) 2024年第9期137卷 2023 Sep 5页

作者： Liu Mengyi He Panpan Ye Ziliang Yang Sisi zhang Yanjun Wu qimeng Zhou Chun zhang Yuanyuan Hou Fan Fan Qin Xianhui Division of Nephrology Nanfang Hospital Southern Medical University National Clinical Research Center for Kidney Disease State Key Laboratory of Organ Failure Research Guangdong Provincial Institute of Nephrology Guangdong Provincial Key Laboratory of Renal Failure Research Guangzhou Guangdong China

Background: Whether functional gastrointestinal disorders (FGIDs) are associated with the long-term risk of chronic kidney disease (CKD) remains unclear. We aimed to investigate the prospective association of FGIDs with CKD and examine whether mental health mediated the association.Methods: About 416,258 participants without a prior CKD diagnosis enrolled in the UK Biobank between 2006 and 2010 were included. Participants with FGIDs (including irritable bowel syndrome [IBS], dyspepsia, and other functional intestinal disorders [FIDs; mainly composed of constipation]) were the exposure group, and non-FGID participants were the non-exposure group. The primary outcome was incident CKD, ascertained from hospital admission and death registry records. A Cox proportional hazard regression model was used to investigate the association between FGIDs and CKD, and the mediation analysis was performed to investigate the mediation proportions of mental health.Results: At baseline, 33,156 (8.0%) participants were diagnosed with FGIDs, including 21,060 (5.1%), 8262 (2.0%), and 6437 (1.6%) cases of IBS, dyspepsia, and other FIDs, respectively. During a mean follow-up period of 12.1 years, 11,001 (2.6%) participants developed CKD. FGIDs were significantly associated with a higher risk of incident CKD compared to the absence of FGIDs (hazard ratio [HR], 1.36; 95% confidence interval [CI], 1.28–1.44). Similar results were observed for IBS (HR, 1.27; 95% CI, 1.17–1.38), dyspepsia (HR, 1.30; 95% CI, 1.17–1.44), and other FIDs (HR, 1.60; 95% CI, 1.43–1.79). Mediation analyses suggested that the mental health score significantly mediated 9.05% of the association of FGIDs with incident CKD and 5.63–13.97% of the associations of FGID subtypes with CKD. Specifically, the positive associations of FGIDs and FGID subtypes with CKD were more pronounced in participants with a high genetic risk of CKD.Conclusion: Participants with FGIDs had a higher risk of incident CKD, which was partly explained by mental health scores and was more pronounced

关键词： Functional gastrointestinal disorders Chronic kidney diseases Genetic susceptibility Mental health

对近年来数字出版评优产品的追踪测评及分析--传统书刊报APP产品用户吸引力测评报告

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出版发行研究 2022年第8期 5-13页

作者：张立王瑶张其濛闫龙山东大学中国新闻出版研究院联通数字科技有限公司

本测评是《对近年来数字出版评优产品的追踪测评及分析》系列中的第四部分,主要围绕APP用户访问行为进行,数据从第三方运营商的原始数据及相关推算获得。本次测评旨在进一步追踪了解传统出版业数字化转型效果,为管理部门和出版单位制定... 详细信息

本测评是《对近年来数字出版评优产品的追踪测评及分析》系列中的第四部分,主要围绕APP用户访问行为进行,数据从第三方运营商的原始数据及相关推算获得。本次测评旨在进一步追踪了解传统出版业数字化转型效果,为管理部门和出版单位制定切实可行的发展目标和决策规划提供参考。本次测评发现,传统书刊报积极进军移动互联网,打造了一批优秀的APP产品,且报刊APP明显比图书APP更吸引用户关注。但与流行APP产品相比,传统书刊报APP用户日活数、留存率呈双低现象,且运营模式和服务模式尚需创新和突破。

关键词：数字出版测评书刊报出版APP