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一种用于可再生能源的新型升降压变换器

电力电子技术 2024年第6期58卷 77-79,84页

作者：梁鹰杨区峻豪石丽梅广东海洋大学电子与信息工程学院广东湛江524088

针对可再生能源发电装置输出电压波动大、输出电能难以存储的情况,此处提出了一种输入、输出连续的新型升降压变换器,采用开关电感结构,实现了低电感电流纹波、宽电压转换比和低开关管电压应力。此处在连续导通模式(CCM)下对变换器进行... 详细信息

针对可再生能源发电装置输出电压波动大、输出电能难以存储的情况,此处提出了一种输入、输出连续的新型升降压变换器,采用开关电感结构,实现了低电感电流纹波、宽电压转换比和低开关管电压应力。此处在连续导通模式(CCM)下对变换器进行了详细的工作原理分析和稳态特性推导。为验证所提变换器的可行性,搭建了一台输入12~80V,输出48V,功率100W的实验样机,在升压模式和降压模式下测得最大效率分别为92.62%,95.78%。

关键词：变换器输入、输出连续可再生能源

A Modified Certainty Coefficient Method(M-CF) for Debris Flow Susceptibility Assessment:A Case Study for the Wenchuan Earthquake Meizoseismal Areas

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Journal of Mountain Science 2014年第5期11卷 1286-1297页

作者： WANG jun YU Yan yang Shun LU Gui-hong ou Guo-qiang Key Laboratory of Mountain hazards and Earth Surface Process Chinese Academy of Sciences Institute of Mountain hazards and Environment Chinese Academy of Sciences University of Chinese Academy of Sciences

In the meizoseismal areas hit by the China Wenchuan earthquake on May 12, 2008, the disasterprone environment has changed dramatically, making the susceptibility assessment of debris flow more complex and uncertain. After the earthquake, debris flow hazards occurred frequently and effective susceptibility assessment of debris flow has become extremely important. Shenxi gully in Du Jiangyan city, located in the meizoseismal areas, was selected as the study area. Based on the research of disaster-prone environment and the main factors controlling debris flow, the susceptibility zonations of debris flow were mapped using factor weight method(FW), certainty coefficient method(CF) and geomorphic information entropy method(GI). Through comparative analysis, the study showed that these three methods underestimated susceptible degree of debris flow when used in the meizoseismal areas of Wenchuan earthquake. In order to solve this problem, this paper developed a modified certainty coefficient method(M-CF) to reflect the impact of rich loose materials on the susceptible degree of debris flow. In the modified method, the distribution and area of loose materials were obtained by field investigations and postearthquake remote sensing image, and four data sets, namely, lithology, elevation, slop and aspect, wereused to calculate the CF values. The result of M-CF method is in agreement with field investigations and the accuracy of the method is satisfied. The method has a wide application to the susceptibility assessment of debris flow in the earthquake stricken areas.

关键词： Wenchuan earthquake Disaster-prone environment Debris flow Susceptibility assessment Modified certainty coefficient method(M-CF)

Density-based rough set model for hesitant node clustering in overlapping community detection

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Journal of Systems Engineering and Electronics 2014年第6期25卷 1089-1097页

作者： jun Wang Jiaxu Peng ou Liu School of Economics and Management Beihang University School of Accounting and Finance The Hong Kong Polytechnic University

Overlapping community detection in a network is a challenging issue which attracts lots of attention in recent years.A notion of hesitant node（HN） is proposed. An HN contacts with multiple communities while the communications are not strong or even accidental, thus the HN holds an implicit community ***, HNs are not rare in the real world network. It is important to identify them because they can be efficient hubs which form the overlapping portions of communities or simple attached nodes to some communities. Current approaches have difficulties in identifying and clustering HNs. A density-based rough set model（DBRSM） is proposed by combining the virtue of densitybased algorithms and rough set models. It incorporates the macro perspective of the community structure of the whole network and the micro perspective of the local information held by HNs, which would facilitate the further ＂growth＂ of HNs in community. We offer a theoretical support for this model from the point of strength of the trust path. The experiments on the real-world and synthetic datasets show the practical significance of analyzing and clustering the HNs based on DBRSM. Besides, the clustering based on DBRSM promotes the modularity optimization.

关键词： density-based rough set model(DBRSM) overlapping community detection rough set hesitant node(HN) trust path

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复合菌剂抑制辣椒疫病的土壤细菌群落特征

农业现代化研究 2024年第2期45卷 336-344页

作者：陈梦李德军游甜葛旭欧立军刘秋梅湖南农业大学园艺学院湖南长沙410125 中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室湖南长沙410125 中国科学院环江喀斯特生态系统观测研究站广西环江547100

根际促生菌能通过调控土壤微生物群落组成及功能有效防控作物土传病害。辣椒疫病是由疫霉菌(Phytophthora capsici)引起的严重土传病害之一,然而,目前针对根际促生菌抑制辣椒疫病的效应及其与土壤微生物群落之间关联的研究欠缺。本研究... 详细信息

根际促生菌能通过调控土壤微生物群落组成及功能有效防控作物土传病害。辣椒疫病是由疫霉菌(Phytophthora capsici)引起的严重土传病害之一,然而,目前针对根际促生菌抑制辣椒疫病的效应及其与土壤微生物群落之间关联的研究欠缺。本研究以长期有机培育的健康土壤为材料,通过平板对峙法,筛选并复配出具有显著拮抗病原菌的复合菌剂,通过盆栽实验探究该复合菌剂对辣椒疫病的防治效应及其微生物群落特征。拮抗实验表明,复合菌剂与单一菌株相比能够显著增加对病原菌的拮抗率。盆栽实验表明,接种复合菌剂与对照(接种辣椒疫霉菌)相比,辣椒疫病的发病率和致死率显著降低了14.3%和23.8%,细菌群落α多样性显著下降,细菌群落组成发生改变,与诱导植物系统抗性的细菌群落双组分系统功能显著增加,其中显著增加的波特氏菌属与土壤中病原菌的数量显著负相关。本研究结果为辣椒实际生产中应用复合菌剂防控辣椒疫病提供了技术支撑。

关键词：根际促生菌拮抗效率辣椒疫霉菌辣椒疫病细菌群落

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一种隧道式砖窑余热回收锅炉的安装监督检验

西部特种设备 2024年第4期7卷 45-47,52页

作者：陆文杨君蒋浩欧宇星乐山市特种设备监督检验所四川乐山614000

针对一种隧道式砖窑余热回收锅炉安装监督检验中发现的缺陷,笔者提出整改措施,为同类余热回收锅炉安装监督检验提供参考,以保证安装该类余热回收锅炉监督检验工作质量和余热回收锅炉安全运行。

关键词：砖窑余热回收锅炉监督检验节能改造

Long runout mechanism of the Shenzhen 2015 landslide:insights from a two-phase flow viewpoint

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Journal of Mountain Science 2018年第10期15卷 2247-2265页

作者： QIAO Cheng ou Guo-qiang PAN Hua-li ouyang Chao-jun JIA yang Institute of Mountain Hazards and Environment Chinese Academy of SciencesChengdu 610041China Key Laboratory of Mountain Surface Process and Hazards Chinese Academy of SciencesChengdu 610041China University of Chinese Academy of Sciences Beijing 100049China Anhui University of Science&Technology Huainan 232002China

A catastrophic landslide occurred at Hongao dumpsite in Guangming New District of Shenzhen, South China, on December 20, 2015. An estimated total volume of 2.73×106 m3 of construction spoils was mobilized during this event. The landslide traveled a long distance on a low-relief terrain. The affected area was approximately 1100 m in length and 630 m in width. This landslide made 33 buildings destroyed, 73 people died and 4 people lost. Due to the special dumping history and other factors, soil in this landfill is of high initial water content. To identify the major factors that attribute to the long runout character, a two-phase flow model of Iverson and George was used to simulate the dynamics of this landslide. The influence of initial hydraulic permeability, initial dilatancy, and earth pressure coefficient was examined through numerical simulations. We found that pore pressure has the most significant effect on the dynamic characteristics of Shenzhen landslides. Average pore pressure ratio ofthe whole basal surface was used to evaluate the degree of liquefaction for the sliding material. The evolution and influence factors of this ratio were analyzed based on the computational results. An exponential function was proposed to fit the evolution curve of the average pore pressure ratio, which can be used as a reasonable and simplified evaluation of the pore pressure. This fitting function can be utilized to improve the single-phase flow model.

关键词： Dynamics Landslide Long runout Pore pressure Two-phase

Recent Progress in Boosted PDT Induced Immunogenic Cell Death for Tumor Immunotherapy

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Chemical Research in Chinese Universities 2021年第1期37卷 83-89页

作者： LI jun ou Hanlin DING Dan State Key Laboratory of Medicinal Chemical Biology Key Laboratory of Bioactive MaterialsMinistry of EducationCollege of Life SciencesNankai UniversityTianjin300071P.R.China

With the rapid development of materials science,photosensitive materials have been widely used in the field of immunogenic cell death(ICD),which was on account of the reactive oxygen species(ROS)generation by photosensitizer under light irradiation inducing cellular oxidative stress during the dying of *** researches related to photodynamic therapy(PDT)induced ICD were conducted and exhibited brilliant performance in cancer ***,a variety of different strategies for PDT induced ICD have been summarized and discussed to provide researchers more inspiration for cancer immunotherapy.

关键词： Photodynamic therapy Immunogenic cell death Damage-associated molecular pattern

Associations of content and gene polymorphism of macrophage inhibitory factor-1 and chronic hepatitis C virus infection

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World Journal of Gastroenterology 2020年第41期26卷 6378-6390页

作者： Xun-jun yang Xiao-ou Wang Yao Chen Song-Dao Ye Department of Laboratory Medicine The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhou 325027Zhejiang ProvinceChina Department of Pathology The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325006Zhejiang ProvinceChina

BACKGRouND The expression of macrophage inhibitory factor-1(MIC-1) is increased in peripheral blood of patients with chronic hepatitis and liver cirrhosis. However, whether MIC-1 gene polymorphism is correlated with relevant diseases is not yet *** To explore the correlation between gene polymorphism in MIC-1 exon region and chronic hepatitis C virus(HCV) *** This case-control study enrolled 178 patients with chronic hepatitis C(CHC) in the case group, and 82 healthy subjects from the same region who had passed the screening examination comprised the control group. The genotypes of rs1059369 and rs1059519 loci in the MIC-1 gene exon were detected by DNA sequencing. Also, the MIC-1 level, liver function metrics, liver fibrosis metrics, and HCV RNA load were determined. Univariate analysis was used to compare the differences and correlations between the two groups with respect to these parameters. Multivariate logistic regression was used to analyze the independent relevant factors of *** The plasma MIC-1 level in the CHC group was higher than that in the control group(P oups(P ound between rs1059369 and rs1059519 loci, and significant difference was detected in the distribution of haplotype A-C between the CHC and control groups(P ound the MIC-1 leve

关键词： Hepatitis C virus Chronic infection Exon region Polymorphism Macrophage inhibitory factor-1 Case-control study

A new family of supramolecular multiferrocenyl rhomboids:Synthesis,characterization,and their electrochemical behavior

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Chinese Chemical Letters 2013年第6期24卷 471-474页

作者： Jiang-Kun ou-yang Li-jun Chen Lin Xu Cui-Hong Wang Hai-Bo yang Shanghai Key Laboratory of Green Chemistry and Chemical Processes Department of ChemistryEast China Normal University

Two novel,supramolecular,multiferrocenyl rhomboids 5 and 6 have been successfully constructed from newly designed 60 ferrocenyl donor precursor 1 via coordination-driven *** structures of all multiferrocenyl rhomboids were characterized by multinuclear NMR（~1H and ^（31）P）,CSI-TOF-MS, and PM6 semi-empirical molecular simulation,and their electrochemical behaviors have been investigated.

关键词： Supromolecular metallacycle Coordination-driven self-assembly Multiferrocenyl rhomboid Electrochemical behavior