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Effects of Anthropogenic Disturbance on Sediment Organic Carbon Mineralization Under Different Water Conditions in Coastal Wetland of a Subtropical Estuary

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Chinese Geographical Science 2018年第3期28卷 400-410页

作者： MOU Xiaojie LIU Xingtu SUN zhigao TONG Chuan HUANG Jiafang WAN Siang wang Chun WEN Bolong Key Laboratory of Wetland Ecology and Environment Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Institute of Geography Key Laboratory of Humid Sub-tropical Eco-geographical Process of Ministry of Education Fujian Normal University

The changes in soil organic carbon(C) mineralization as affected by anthropogenic disturbance directly determine the role of soils as C source or sink in the global C budget. The objectives of this study were to investigate the effects of anthropogenic disturbance(aquaculture pond, pollutant discharge and agricultural activity) on soil organic C mineralization under different water conditions in the Minjiang River estuary wetland, Southeast China. The results showed that the organic C mineralization in the wetland soils was significantly affected by human disturbance and water conditions(P aquaculture pond sediment > soil near the discharge outlet > rice paddy soil. This indicated that human disturbance inhibited the mineralization of C in soils of the Minjiang River estuary wetland, and the inhibition increased with the intensity of human disturbance. The data for cumulative mineralized CO_2-C showed a good fit(R^2 > 0.91) to the first-order kinetic model C_t = C_0(1 – exp(–kt)). The kinetic parameters C_0, k and C_0 k were significantly affected by human disturbance and water conditions. In addition, the total amount of mineralized C(in 49 d) was positively related to C_0, C_0 k and electrical conductivity of soils. These findings indicated that anthropogenic disturbance suppressed the organic C mineralization potential in subtropical coastal wetland soils, and changes of water pattern as affected by human activities in the future would have a strong influence on C cycling in the subtropical estuarine wetlands.

关键词： human disturbance carbon mineralization water conditions coastal wetland

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基于离散指示矩阵优化的多视角图聚类方法

火箭军工程大学学报

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火箭军工程大学学报 2024年第03期38卷 51-59页

作者：王念张炜崔智高苏延召姜柯李爱华火箭军工程大学

为了解决当前多视角图聚类方法依赖于谱分解而导致计算量高且超参数调优过程繁琐的问题，基于离散指示矩阵优化的方式，提出了一种无超参数的多视角图聚类方法。为了避免谱分解的连续松弛，采用一种超集群策略来高效区分数据的离散集群... 详细信息

为了解决当前多视角图聚类方法依赖于谱分解而导致计算量高且超参数调优过程繁琐的问题，基于离散指示矩阵优化的方式，提出了一种无超参数的多视角图聚类方法。为了避免谱分解的连续松弛，采用一种超集群策略来高效区分数据的离散集群关系。在优化层面，改进了传统的坐标下降方法，以降低计算复杂度以及实现离散指示矩阵的快速优化。在物体图像、人脸图像、文本数据、手写字体图像中进行了算法性能验证。结果表明：相比于最近常用的多视角图聚类方法，所提方法在聚类精度和运行效率方面具有明显优势。

关键词：多视角图聚类离散指示矩阵超集群策略坐标下降谱分解

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Immunogenicity of a recombinant VSV-Vectored SARS-CoV vaccine induced robust immunity in rhesus monkeys after single-dose immunization

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Virologica Sinica 2022年第2期37卷 248-255页

作者： Dan Shan Xiaoyan Tang Renqiang Liu Dan Pan Xijun wang Jinying Ge Zhiyuan Wen zhigao Bu State Key Laboratory of Veterinary Biotechnology Harbin Veterinary Research InstituteChinese Academy of Agricultural SciencesHarbin150069China Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses Yangzhou UniversityYangzhou225127China

Severe acute respiratory syndrome(SARS)is a highly contagious zoonotic disease caused by SARS coronavirus(SARS-Co V).Since its outbreak in Guangdong Province of China in 2002,SARS has caused 8096 infections and774 deaths by December 31st,*** there have been no more SARS cases reported in human populations since 2004,the recent emergence of a novel coronavirus disease(COVID-19)indicates the potential of the recurrence of SARS and other coronavirus disease among ***,developing a rapid response SARS vaccine to provide protection for human populations is still ***(S)protein of SARS-Co V can induce neutralizing antibodies,which is a pivotal immunogenic antigen for vaccine *** we constructed a recombinant chimeric vesicular stomatitis virus(VSV)VSVΔG-SARS,in which the glycoprotein(G)gene is replaced with the SARS-Co V S ***ΔG-SARS maintains the bullet-like shape of the native VSV,with the heterogeneous S protein incorporated into its surface instead of G *** results of safety trials revealed that VSVΔG-SARS is safe and effective in mice at a dose of 1×10^(6)TCID_(50).More importantly,only a single-dose immunization of 2×10^(7)TCID_(50)can provide high-level neutralizing antibodies and robust T cell responses to non-human primate animal ***,our data indicate that VSVΔG-SARS can be used as a rapid response vaccine *** study on the recombinant VSV-vectored SARS-Co V vaccines can accumulate experience and provide a foundation for the new coronavirus disease in the future.

关键词： Severe acute respiratory syndrome coronavirus(SARS-CoV) Vesicular stomatitis virus(VSV) Vaccine Immunization

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基于ALBERT-Seq2Seq-Attention模型的数字化档案多标签分类

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湖州师范学院学报 2024年第2期46卷 65-72页

作者：王少阳成新民王瑞琴陈静雯周阳费志高湖州师范学院信息工程学院浙江湖州313000

针对现有的数字化档案多标签分类方法存在分类标签之间缺少关联性的问题,提出一种用于档案多标签分类的深层神经网络模型ALBERT-Seq2Seq-Attention.该模型通过ALBERT(A Little BERT)预训练语言模型内部多层双向的Transfomer结构获取进... 详细信息

针对现有的数字化档案多标签分类方法存在分类标签之间缺少关联性的问题,提出一种用于档案多标签分类的深层神经网络模型ALBERT-Seq2Seq-Attention.该模型通过ALBERT(A Little BERT)预训练语言模型内部多层双向的Transfomer结构获取进行文本特征向量的提取,并获得上下文语义信息;将预训练提取的文本特征作为Seq2Seq-Attention(Sequence to Sequence-Attention)模型的输入序列,构建标签字典以获取多标签间的关联关系.将分类模型在3种数据集上分别进行对比实验,结果表明:模型分类的效果F1值均超过90%.该模型不仅能提高档案文本的多标签分类效果,也能关注标签之间的相关关系.

关键词： ALBERT Seq2Seq Attention 多标签分类数字化档案

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Nitrogen Biological Cycle Characteristics of Seepweed(Suaeda salsa) Wetland in Intertidal Zone of Huanghe(Yellow) River Estuary

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Chinese Geographical Science 2012年第1期22卷 15-28页

作者： SUN zhigao MOU Xiaojie SUN Jingkuan SONG Hongli YU Xiang wang Lingling JIANG Huanhuan SUN Wanlong SUN Wenguang Shandong Key Laboratory for Eco-Environmental Science of Yellow River Delta Coastal Wetland Ecological Research Base of Yantai Institute of Coastal Zone Research Chinese Academy of Sciences Binzhou 256603 China Key Laboratory of Coastal Environment Processes of Chinese Academy of Sciences Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes Yantai Institute of Coastal Zone Research Chinese Academy of Sciences Yantai 264003 China Key Laboratory of Wetland Ecology and Environment Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Changchun 130012 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

From April 2008 to November 2009, the nitrogen （N） cycle of plant-soil system in seepweed （Suaeda salsa） wetland in the intertidal zone of the Huanghe （Yellow） River estuary was studied. Results showed that soil N had sig- nificant seasonal fluctuations and vertical distribution, and the net N mineralization rates in topsoil were significantly different in growing season （p 〈 0.01）. The N/P ratio （9.87 ±1.23） of S. salsa was less than 14, indicating that plant growth was limited by N. The N accumulated in S. salsa litter at all times during decomposition, which was ascribed to the N immobilization by microbes from the environment. Soil organic N was the main N stock of plant-soil system, accounting for 97.35% of the total N stock. The N absorption and utilization coefficients of S. salsa were very low （0.0145 and 0.3844, respectively）, while the N cycle coefficient was high （0.7108）. The results of the N turnovers among compartments of S. salsa wetland showed that the N uptake amount of aboveground part and root were 7.764 g/m2and 4.332 g/m2, respectively. The N translocation amounts from aboveground part to root and from root to soil were 3.881 g/m2 and 0.626 g/m2, respectively. The N translocation amount from aboveground living body to litter was 3.883 g/m2, the annual N return amount from litter to soil was more than 0.125（-） g/m2 （minus represented immobili- zation）, and the net N mineralization amount in topsoil （0-15 cm） in growing season was 1.190 g/m2. The assessment of N biological cycle status orS. salsa wetland indicated that N was a very important limiting factor and the ecosystem was situated in unstable and vulnerable status. The S. salsa was seemingly well adapted to the low-nutrient status and vulnerable habitat, and the N quantitative relationships determined in the compartment model might provide scientific base for us to reveal the special adaptive strategy orS. salsa to the vulnerable habitat in the following studies.

关键词： nitrogen biological cycle seepweed wetland Huanghe (Yellow) River estuary

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Excited-state regulation in eco-friendly ZnSeTe-based quantum dots by cooling engineering

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Science China Materials 2022年第6期65卷 1569-1576页

作者： Baoqiang Wu Shuangyi Zhao Mingshui Zhang zhigao Huang Chen Chen Zhigang Zang Yue wang MIIT Key Laboratory of Advanced Display Materials and Devices Institute of Optoelectronics&NanomaterialsCollege of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China Key Laboratory of Optoelectronic Technology&Systems(Ministry of Education) Chongqing UniversityChongqing 400044China School of Microelectronics and Communication Engineering Chongqing UniversityChongqing 400044China

The production of high-quality eco-friendly quantum dots(QDs)is challenging because of the efficient yet elusive nonradiative recombination *** study examined the effects of cooling engineering on regulating the excited states to realize high-quality ZnSeTe core-shell *** presence of ultrafast hot-carrier trapping and band-edge carrier trapping is responsible for the poor emission efficiency in ZnSeTe *** above processes can be suppressed simultaneously by engineering the cooling process,and the underlying mechanisms are interrogated by combined electronic and spectroscopic *** engineered ZnSeTe QDs exhibited record-high efficiency(>90%)and stability that were comparable to those of the canonical CdSe *** on the achievement,the ZnSeTe QD-based white light-emitting diodes(WLEDs)showed excellent optical performance,including a high color-rendering index of 80 and an appropriate correlated color temperature of 7391 ***,the WLEDs could serve as light sources in ecofriendly visible light *** results highlight the feasibility of eco-friendly QDs for practical applications without environmental hazards.

关键词： eco-friendly quantum dot ZnSeTe carrier dynamics white light emission visible light communication

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新形势下高校如何加强能源电力人才的培养培训

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科教文汇 2024年第1期 91-94页

作者：李庆辉崔智高王新军李亚奇火箭军工程大学保障学院陕西西安710025

我国的能源电力发展已进入以新能源为主体的新阶段,高校作为培养能源电力行业人才的重要场所,应积极为国家能源电力发展战略服务,培养适应社会经济发展和科技进步需要的高素质人才。目前,我国能源电力行业人才的培养面临着新形势下行业... 详细信息

我国的能源电力发展已进入以新能源为主体的新阶段,高校作为培养能源电力行业人才的重要场所,应积极为国家能源电力发展战略服务,培养适应社会经济发展和科技进步需要的高素质人才。目前,我国能源电力行业人才的培养面临着新形势下行业人才需求发生变化、专业人才培养面临挑战、毕业生就业困难等问题。为了有效解决这些问题,各高校应从自身实际出发,不断完善能源电力专业人才培养模式,为国家能源电力行业发展提供强有力的人才支撑。基于此,该文就新形势下高校如何加强能源电力人才的培养培训展开分析,以供参考。

关键词：高校能源电力人才培养

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十个编组站现代化改造后运营效果的调查

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减速顶与调速技术 2000年第1期 6-11页

作者：张超肖贵平付景阳李守杰王志高陈建华向凯魏瑜北方交大铁道部计划司

在对我国近年完成改造的十个现代化编组站调研的基础上 ,分析了各调车场安全连挂情况 ,各级减速器速度控制误差情况 ,总结了自动化改造的运营效果 ,存在的问题 ,提出了进一步发展的建议。

关键词：编组站驼峰运营效果缓行器调查调车场减速顶现代化改造中国铁路

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危险化学品事故特点及四川电网的防范措施

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四川电力技术 2021年第3期44卷 82-87页

作者：耿植毛义鹏余乐文燚刘曦兰新生曾晓亮王志高刘红志国网四川省电力公司电力科学研究院四川成都610041 国网四川省电力公司四川成都610041

为掌握危险化学品事故特点,防范危险化学品事故,对国内外历史上发生的300余起典型危险化学品事故进行研究分析。分析结果表明,危险化学品事故类型以火灾爆炸居多,夏季高温季节是重特大事故易发、多发时期,使得该时期的危险化学品安全工... 详细信息

为掌握危险化学品事故特点,防范危险化学品事故,对国内外历史上发生的300余起典型危险化学品事故进行研究分析。分析结果表明,危险化学品事故类型以火灾爆炸居多,夏季高温季节是重特大事故易发、多发时期,使得该时期的危险化学品安全工作具有特殊性、复杂性,生产(运行)环节、作业和检修环节以及储存环节是事故防范的重点,违法违规是导致事故发生的主要原因。根据四川电网危险化学品实际,提出针对性的事故防范措施建议,为保障四川电网危险化学品安全形势持续稳定提供参考。

关键词：危险化学品事故防范四川电网

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武汉地埋管地源热泵系统能效测试分析

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煤气与热力 2024年第3期44卷 I0001-I0005页

作者：胡志高胡平放王彦芳康杰朱娜雷飞湖北风神净化空调设备工程有限公司湖北武汉430060 华中科技大学环境科学与工程学院湖北武汉430074

对武汉部分公共建筑地埋管地源热泵系统运行参数进行测试,对系统能效水平进行评价。将传统供能系统(常规水冷冷水机组+天然气锅炉)作为比较对象,计算地埋管地源热泵系统节能率。部分项目的热泵系统制冷、制热性能未能达标,但差距不大。... 详细信息

对武汉部分公共建筑地埋管地源热泵系统运行参数进行测试,对系统能效水平进行评价。将传统供能系统(常规水冷冷水机组+天然气锅炉)作为比较对象,计算地埋管地源热泵系统节能率。部分项目的热泵系统制冷、制热性能未能达标,但差距不大。热泵机组供回水温差普遍偏小。项目水泵能耗水平优于全国实测水平,但少数项目水泵能耗偏高。各项目的节能率为17.0%~50.9%,平均节能率为31.0%,节能性比较好。

关键词：地埋管地源热泵能效水平节能率后评估

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