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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 ***), 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 *** 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 ***, 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

Pulsations of Three Rapidly Oscillating Ap Stars TIC 96315731,TIC72392575,and TIC 318007796

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Research in Astronomy and Astrophysics 2024年第8期24卷 157-168页

作者： Hai-Jian Zhong dong-Xiang shen Chun-Hua Zhu He-Lei Liu Su-Fen Guo Guo-Liang Lü School of Physical Science and Technology Xinjiang UniversityUrumqi 830046China Xinjiang Astronomical Observatory National Astronomical ObservatoriesChinese Academy of SciencesUrumqi 830000China

We analyze the frequencies of three known roAp stars,TIC 96315731,TIC 72392575,and TIC 318007796,using the light curves from the Transiting Exoplanet Survey *** TIC 96315731,the rotational and pulsational frequencies are 0.1498360 day^(-1)and 165.2609 day^(-1),*** the case of TIC 72392575,the rotational frequency is 0.25551 day^(-1).We detect a quintuplet of pulsation frequencies with a center frequency of135.9233 day^(-1),along with two signals within the second pair of rotational sidelobes of the quintuplet separated by the rotation *** two signals may correspond to the frequencies of a dipole *** TIC318007796,the rotational and pulsational frequencies are 0.2475021 day^(-1),192.73995 day^(-1),and196.33065 day^(-1),*** on the oblique pulsator model,we calculate the rotation inclination(i)and magnetic obliquity angle(b)for the stars,which provide the geometry of the pulsation *** the phases of the frequency quintuplets,the pulsation amplitude and phase modulation curves,and the results of spherical harmonic decomposition,we conclude that the pulsation modes of frequency quintuplets in TIC96315731,TIC 72392575,and TIC 318007796 correspond to distorted dipole mode,distorted quadrupole mode,and distorted dipole mode,respectively.

关键词： asteroseismology-techniques photometric-stars oscillations(including pulsations)-stars chemically peculiar

Diagnosis and treatment of biliary mucinous cystic neoplasms: A single-center experience

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Hepatobiliary & Pancreatic Diseases International 2024年第5期23卷 495-501页

作者： Jun-Jun Jia Ya-Fen Cheng Mei-Bao Feng Li Liu Ming-Qi Shuai Xiao-dong shen Xiao-Feng Tang Shu-Sen Zheng Division of Hepatobiliary and Pancreatic Surgery Department of Surgerythe First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China Department of International Healthcare Center the First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China Department of Pathology the First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China Department of Library the First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China

Background: Biliary mucinous cystic neoplasms(BMCNs) are rare hepatobiliary cystic tumors, which can be divided into noninvasive and invasive types. This study aimed to investigate the diagnosis, treatment, and prognosis of BMCNs in a large single center. Methods: We analyzed 49 patients with BMCNs confirmed by postoperative pathology at the First Afflliated Hospital, Zhejiang University School of Medicine between January 2007 and December 2021. Results: Among the 49 patients, 37 were female(75.5%), and the average age was 57.04 years. Common symptoms included abdominal discomfort, jaundice and fever, while 22 patients(44.9%) had no symptoms. Serum carbohydrate antigen(CA) 19-9 and CA125 concentrations were elevated in 34.8% and 19.6% of patients, respectively. Forty-eight patients had tumors in the intrahepatic bile ducts and only one had a tumor in the extrahepatic bile duct. Forty-eight patients with noninvasive intrahepatic BMCNs were further analyzed in terms of pathological features: 34(70.8%) had low-grade intraepithelial neoplasms(LGINs), and 14(29.2%) had high-grade intraepithelial neoplasms(HGINs). The potential immunohistochemical markers of BMCNs were cytokeratin(CK) 19, CK7, estrogen receptor and progesterone receptor. Follow-up data for 37 patients with intrahepatic BMCNs were obtained. The median overall survival(OS) of BMCNs was not reached. The longest survival time was 137 *** 5-and 10-year OS rates were 100% and 85.4%, respectively. The 5-and 10-year recurrence-free survival(RFS) rates were 93.9% and 80.2%, respectively. Conclusions: BMCNs are rare cystic neoplasms that commonly occur in middle-aged females. BMCNs can only be diagnosed and classified by postoperative pathology, as there are no specific clinical presentations, serological indicators or imaging modalities for preoperative diagnosis. Complete surgical resection is necessary for BMCNs, and the postoperative prognosis is favorable.

关键词： Biliary mucinous cystic neoplasms Low-grade intraepithelial neoplasms High-grade intraepithelial neoplasms Overall survival Recurrence-free survival

RuCo alloy nanoparticles embedded within N-doped porous two-dimensional carbon nanosheets:a high-performance hydrogen evolution reaction catalyst

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Tungsten 2024年第1期6卷 114-123页

作者： Jin-Hui Wang Shao-Wei Yang Fu-Bin Ma Yi-Ke Zhao Shi-Nuo Zhao Zheng-Yu Xiong dong Cai Hai-dong shen Kai Zhu Qiu-Yu Zhang Yue-Ling Cao Tian-Shuai Wang He-Peng Zhang Research and Development Institute of Northwestern Polytechnical University in shenzhen Shenzhen 518057China Xi’an Key Laboratory of Functional Organic Porous Materials School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710129China School of Power and Energy Northwestern Polytechnical UniversityXi’an 710129China Chongqing Science and Technology Innovation Center of Northwestern Polytechnical University Chongqing 401135China

Developing cost-effective electrocatalysts with high activity and stability especially at high current density is of great significance for the large-scale commercial application of electrochemical water splitting to hydrogen production but still remains ***,we report an effective confinement pyrolysis strategy to fabricate embedded ruthenium-cobalt nanoclusters supported on N-doped porous two-dimensional carbon nanosheets(RuCo@CN).Markedly,the embedded structure can effectively prevent the migration,agglomeration,and leaching of nanoparticles,thus endowing the RuCo@CN catalyst with high *** be exact,high stability with up to 650 h can be achieved at high current density(-500 and-1000 mA·cm^(-2)).Besides,the RuCo@CN catalysts also exhibit highly reactive with low overpotentials of only 11mV at-10 mA·cm^(-2).Density functional theory calculations reveal that the introduction of cobalt reduces the decomposition barrier of H_(2)O for RuCo@CN alloy,thus promoting hydrogen evolution reaction.

关键词： Hydrogen evolution reaction Confinement pyrolysis strategy Mosaic structure Stability

全球价值链嵌入、国内市场一体化与省际收入差距

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中国地质大学学报（社会科学版） 2024年第1期24卷 128-142页

作者：蒋瑛成东申四川大学经济学院四川成都610065

从双重分工视角出发,将全球价值链嵌入与国内市场一体化纳入同一分析框架,采用省份两两配对面板数据,考察了全球价值链嵌入对省际收入差距的影响以及国内市场一体化的调节作用。研究发现:全球价值链嵌入扩大了省际收入差距,但是当国内... 详细信息

从双重分工视角出发,将全球价值链嵌入与国内市场一体化纳入同一分析框架,采用省份两两配对面板数据,考察了全球价值链嵌入对省际收入差距的影响以及国内市场一体化的调节作用。研究发现:全球价值链嵌入扩大了省际收入差距,但是当国内市场一体化达到一定程度后,可以抑制全球价值链嵌入对省际收入差距扩大的负面影响。生产率差距是全球价值链嵌入作用于省际收入差距的重要渠道,而国内市场一体化则通过促进产业转移,缓解了全球价值链嵌入对省际收入差距扩大的负面影响。全球价值链嵌入扩大了中国东部省份与中西部省份之间的收入差距,而国内市场一体化可以倒U型调节由全球价值链嵌入所导致的中国东部省份与中西部省份之间的收入差距。构建国内价值链可以正向调节由全球价值链嵌入所导致的省际收入差距。本文基于双重分工视角为新时代中国统筹两个市场和两种资源,实现区域协调发展提供了重要启示。

关键词：全球价值链国内市场一体化省际收入差距国内价值链

基于位置分配的去蜂窝massive MIMO系统导频分配功率控制算法

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云南大学学报（自然科学版） 2024年第3期46卷 478-485页

作者：申东刘家乐陈丽兰州交通大学电子与信息工程学院甘肃兰州730070

针对去蜂窝(cell free,CF)大规模多输入多输出(multiple-input multiple-output,MIMO)系统中存在严重的导频污染问题,提出了一种基于位置分配的贪婪导频分配功率控制算法(greedy pilot assignment based on location with pilot power control,GPABL with PPC).首先,遵循相邻用户不分配相同导频序列的原则进行贪婪导频分配(greedy pilot assignment,GPA);然后,在导频分配的基础上叠加了导频功率控制,选择合理的导频功率控制系数减小信道估计的均方误差.仿真结果表明,将两种方式结合起来进行导频优化,系统的吞吐能力有所提升.

关键词：去蜂窝大规模MIMO系统导频污染导频分配功率控制

大社会观视域下当代中国马克思主义社会学的再发现

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哈尔滨工业大学学报（社会科学版） 2024年第1期26卷 67-74页

作者：沈东南京航空航天大学马克思主义学院南京211106

“大社会观”之于当代中国马克思主义社会学,具有元理论层面的决定性意义。基于大社会观的当代中国马克思主义社会学,一要在历史维度接续马克思主义社会学中国化的历史传统,二要在实践维度确立面向中国实践的马克思主义社会学发展目标,... 详细信息

“大社会观”之于当代中国马克思主义社会学,具有元理论层面的决定性意义。基于大社会观的当代中国马克思主义社会学,一要在历史维度接续马克思主义社会学中国化的历史传统,二要在实践维度确立面向中国实践的马克思主义社会学发展目标,三要在学科维度明确当代中国马克思主义社会学的学科内涵,由此方能建构基于大社会观的当代中国马克思主义社会学范式。建构基于大社会观的当代中国马克思主义社会学范式,需要推进“学科发展史—基础理论—交叉应用”三个维度的研究,从而推动形成当代中国马克思主义社会学的学科体系、学术体系、话语体系。

关键词：大社会观马克思主义社会学马克思主义中国社会学

诗中有歌，歌中有诗——试探1930年代的“诗歌偕配”

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音乐探索 2024年第3期 25-41页

作者：沈冬中国台湾大学音乐学研究所

文章试图探究1920年代后期至1930年代前期的“诗/歌”关系。在此，所谓“诗”，专指五四以后出现的“新诗”“白话诗”，不包括中国古典诗。诗，可阅读，可朗诵，可曼吟，其中最具音乐性的，就是以诗作歌而唱了。作者称之“诗/歌偕配”... 详细信息

文章试图探究1920年代后期至1930年代前期的“诗/歌”关系。在此，所谓“诗”，专指五四以后出现的“新诗”“白话诗”，不包括中国古典诗。诗，可阅读，可朗诵，可曼吟，其中最具音乐性的，就是以诗作歌而唱了。作者称之“诗/歌偕配”，或简写为“诗歌偕配”，“诗中有歌、歌中有诗”则是两者水乳交融的理想境地。1920、1930年代新诗风行，有关新诗可否歌唱，应否歌唱，如何歌唱的意见，如百花齐放迸射而出，又如千丝万缕纠结不清，本文将对这种剪不断理还乱的“诗/歌”关系进行着重探讨。

关键词：诗歌偕配新诗演唱倚声填词乐以定词文学与音乐

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电子支气管镜下吸痰治疗肺部感染的临床效果分析

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中国社区医师 2024年第18期40卷 44-46页

作者：沈栋无锡市江阴临港医院ICU 江苏无锡214443

目的:分析电子支气管镜下吸痰治疗肺部感染的临床效果。方法:选取2021年1月—2022年12月无锡市江阴临港医院收治的肺部感染患者80例作为研究对象,采用信封法随机分为对照组与研究组,各40例。对照组实施常规治疗,研究组在对照组基础上实... 详细信息

目的:分析电子支气管镜下吸痰治疗肺部感染的临床效果。方法:选取2021年1月—2022年12月无锡市江阴临港医院收治的肺部感染患者80例作为研究对象,采用信封法随机分为对照组与研究组,各40例。对照组实施常规治疗,研究组在对照组基础上实施电子支气管镜下吸痰治疗。比较两组治疗效果。结果:治疗后,两组第1秒用力呼气容积、最大通气量、肺总量大于治疗前,且研究组大于对照组,差异有统计学意义(P<0.05)。治疗后,两组白细胞计数、C反应蛋白、降钙素原水平低于治疗前,且研究组低于对照组,差异有统计学意义(P<0.05)。治疗后,两组血氧饱和度、pH、动脉血氧分压高于治疗前,且研究组高于对照组,两组动脉血二氧化碳分压低于治疗前,且研究组低于对照组,差异有统计学意义(P<0.05)。结论:电子支气管镜下吸痰治疗肺部感染的临床效果显著,可改善患者肺功能和动脉血气指标,减轻炎性反应。

关键词：电子支气管镜吸痰肺部感染呼吸力学炎性因子