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Journal of Environmental Sciences 2024年第3期137卷 347-357页

作者： Tengda Shi ruijing li Jie Fu Chao Hou Hui Gao Guanjie Cheng Haibo Zhang Shuaichen Jin liang Kong Guangshui Na College of Marine Technology and Environment Dalian Ocean UniversityDalian 116023China Laboratory for coastal marine eco-environment process and carbon sink of Hainan province/Yazhou Bay Innovation Institute Hainan Tropical Ocean UniversitySanya 572022China National Marine Environmental Monitoring Center Dalian 116023China College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai 201306China NCS Testing Technology Co. Ltd.Beijing 10081China

Eleven organophosphate esters(OPEs)in the air and seawater were investigated from the northwestern Pacific Ocean to the Southern Ocean during the 2018 Chinese 34th Antarctic Scientific Expedition.The concentration of total OPEs ranged from 164.82 to 3501.79 pg/m~3in air and from 4.54 to 70.09 ng/L in seawater.Two halogenated OPEs,tri(chloropropyl)phosphate(TCPP)and tri(2-chloroethyl)phosphate(TCEP),were generally more abundant than the non-halogenated OPEs.A levelⅢfugacity model was developed to simulate the transfer and fate of seven OPEs in the air and seawater regions of the central Ross Sea.The model results indicate that OPEs are transferred from the air to the seawater in the central Ross Sea in summer,during which the Ross Sea acts as a final OPE sink.Dry and wet deposition dominated the processes involving OPE transfer to seawater.The OPE degradation process was also found to be more pervasive in the atmosphere than in the seawater region.These findings highlights the importance of long-range transport of OPEs and their air–seawater interface behavior in the Antarctic.

关键词： Organophosphate esters(OPEs) Long-range transport Fugacity model Antarctic Fate

The fate of antibiotic resistance genes in the coastal lagoon with multiple functional zones

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Journal of Environmental Sciences 2023年第6期128卷 93-106页

作者： Shisheng li Hui Gao Haibo Zhang Guangke Wei Qin Shu ruijing li Shuaichen Jin Guangshui Na Yali Shi Laboratory for coastal marine eco-environment process and carbon sink of Hainan provincet/Yazhou Bay Innovation Institute Hainan Tropical Ocean UniversitySanya 572022China National Marine Environmental Monsitoring Center Dalian 116023China College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai 201306China School of Environment Hangzhou Institute for Advanced StudyUCASHangzhou 310024China

Coastal lagoons provide many important services to human society,but their year-round use for aquaculture introduces large amounts of sewage.The contamination of antibiotic resistance genes(ARGs)is therefore of great concern.In this study,50 ARGs subtypes,two integrase genes(intl1,intl2),and 16S rRNA genes were detected by high-throughput quantitative PCR,and standard curves of all target genes were prepared for quantification.The occurrence and distribution of ARGs in a typical coastal lagoon(XinCun lagoon,China)were comprehensively explored.We detected 44 and 38 subtypes of ARGs in the water and sediment,respectively,and discuss the various factors influencing the fate of ARGs in the coastal lagoon.Macrolides-lincosamides-streptogramins B was the primary ARG type,and macB was the predominant subtype.Antibiotic efflux and antibiotic inactivation were the main ARG resistance mechanisms.The XinCun lagoon was divided into eight functional zones.The ARGs showed a distinct spatial distribution owing to the influence of microbial biomass and anthropogenic activity in different functional zones.Fishing rafts,abandoned fish ponds,the town sewage zone,and mangrove wetlands provided a large quantity of ARGs to the XinCun lagoon.Nutrients and heavy metals also significantly correlated with the fate of the ARGs,especially NO_(2)^(−)-N and Cu,which cannot be ignored.It is noteworthy that lagoon-barrier systems coupled with persistent pollutant inputs result in coastal lagoons acting as a“buffer pool”for ARGs,which can then accumulate and threaten the offshore environment.

关键词： Coastal lagoon Antibiotic resistance genes High-throughput qPCR Multifunctional zones Influence factors

Distribution and sources of polycyclic aromatic hydrocarbons in the water column of Kongsfjorden, Arctic

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Journal of Environmental Sciences 2020年第11期32卷 186-193页

作者： ruijing li Hui Gao Zhongqiang Ji Shuaichen Jin linke Ge Humin Zong liping Jiao Zhifeng Zhang Guangshui Na National Marine Environmental Monitoring Center Dalian 116023China Key Laboratory of Marine Ecosystems and Biogeochemistry Second Institute of OceanographyMinistry of Nature ResourcesHangzhou 310012China Key Laboratory of Ocean-Atmospheric Chemistry and Global Change Third Institute of OceanographyMinistry of Nature ResourcesXiamen 361005China Hainan Tropical Ocean University Key Laboratory of Utilization and Conservation for Tropical Marine BioresourcesMinistry of EducationChina

Kongsfjorden is known for its characteristic multi-layer water mass formed by the convergence of freshwaters from nearby glaciers and rivers and saline water from the Atlantic and Arctic.The distribution of polycyclic aromatic hydrocarbons(PAHs)in the water column of Kongsfjorden was investigated and their potential sources were analyzed.The total concentrations of 16 PAHs in the surface seawater and river water were in the range of 33.4-79.8 ng/L(mean 48.5 ng/L)and 2.3-201.4 ng/L(mean 126.1 ng/L),respectively.Horizontally,PAHs were mainly concentrated around river estuaries and the glacier front in the dissolved phase.Vertically,the PAHs in the particulate phase followed surface-enrichment and depth-depletion patterns in most stations,with the maximum concentration found at 50 m depth in the central area of Kongsfjorden.The compositions of PAHs in seawater and rivers were similar,with two-ring and tricyclic PAHs comprising the majority of the dissolved and particulate phases.PAHs found in Kongsfjorden waters appeared to be derived from multiple sources such as petroleum and coal combustion.PAHs in the bay mouth of Kongsfjorden were mainly introduced by the West Spitsbergen Current and the Arctic waters,while in the inner bay,atmospheric deposition and local sources were the major contributors.The distribution of PAHs was mainly attributed to the suspended particulate distribution.

关键词： PAHs Distribution Source Water mass Kongsfjorden

数字化转型赋能企业绿色创新:监督效应与激励效应的分析

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生态经济 2024年第7期40卷 74-81页

作者：李辽宁韩少真包瑞婧李辉长安大学经济与管理学院陕西西安710064 西北大学经济管理学院陕西西安710127

数字化转型是新一轮产业革命驱动下企业的战略选择,为企业绿色创新提供了新动能。以2011—2020年沪深两市A股上市公司为样本,理论分析并实证检验了数字化转型赋能企业绿色创新的作用机制。研究发现:数字化转型可以显著促进企业的绿色创... 详细信息

数字化转型是新一轮产业革命驱动下企业的战略选择,为企业绿色创新提供了新动能。以2011—2020年沪深两市A股上市公司为样本,理论分析并实证检验了数字化转型赋能企业绿色创新的作用机制。研究发现:数字化转型可以显著促进企业的绿色创新。该结论在经过一系列稳健性检验后依然成立。机制分析表明,数字化转型驱动企业实施绿色创新主要通过监督效应和激励效应两条路径实现。异质性分析表明,在内部控制质量较好、所处地区市场化水平较高、国有和重点排污企业中,数字化转型产生的绿色创新驱动效应更大。此外,数字化转型推进企业同时开展绿色独立和联合创新、同时积累绿色发明专利和实用新型专利。研究结论明确了数字化转型赋能企业绿色创新的作用机理,为促进企业绿色创新、助力企业高质量发展提供了政策启示。

关键词：数字化转型绿色创新监督效应激励效应高质量发展

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计算机通信网络安全问题及防护策略研究

通信电源技术 2024年第5期41卷 147-149页

作者：李瑞静武警部队参谋部作战勤务保障大队北京100089

随着网络信息时代的到来,计算机通信网络已经深入社会生产生活的方方面面,给各行各业各领域带来了巨大的影响。在此情况下,计算机通信网络安全问题成为社会关注的焦点。计算机通信网络安全直接关系到用户的个人信息隐私安全和通信网络... 详细信息

随着网络信息时代的到来,计算机通信网络已经深入社会生产生活的方方面面,给各行各业各领域带来了巨大的影响。在此情况下,计算机通信网络安全问题成为社会关注的焦点。计算机通信网络安全直接关系到用户的个人信息隐私安全和通信网络整体运行的可靠性。基于此,文章对当前通信网络安全问题进行分析,并提出具有针对性的防护策略以解决通信网络安全问题,希望能够为提高计算机通信网络的安全防护能力提供帮助,提升通信网络运行的可靠性,确保计算机通信网络能够安全运行与管理。

关键词：计算机通信网络网络安全防护策略

Partially Observed Risk-Sensitive Stochastic Control Problems with Non-Convexity Restriction

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Journal of Systems Science & Complexity 2023年第2期36卷 672-685页

作者： MA Heping li ruijing Hubei University of Technology Wuhan 430068China Guangdong University of Finance and Economics Guangzhou 510320China

The paper considers partially observed optimal control problems for risk-sensitive stochastic systems,where the control domain is non-convex and the diffusion term contains the control v.Utilizing Girsanov’s theorem,spike variational technique as well as duality method,the authors obtain four adjoint equations and establish a maximum principle under partial information.As an application,an example is presented to demonstrate the result.

关键词： Girsanov's theorem maximum principle partial information risk-sensitive optimal control

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垃圾渗滤液膜滤浓缩液的减量技术研究

膜科学与技术 2024年第1期44卷 114-122页

作者：李枫贾晓琳王瑞婧姚鸣铎侯得印中国科学院生态环境研究中心工业废水无害化与资源化国家工程研究中心北京100085 中国科学院大学北京100049

垃圾渗滤液膜滤浓缩液的高效处理已成为市政与环境污染治理领域的迫切需求.本研究以北京市某垃圾填埋场的渗滤液膜滤浓缩液为研究对象,采用“预处理-气隙膜蒸馏”组合工艺对其进行减量化处理.我们研究了不同组合工艺对浓缩液处理效果的... 详细信息

垃圾渗滤液膜滤浓缩液的高效处理已成为市政与环境污染治理领域的迫切需求.本研究以北京市某垃圾填埋场的渗滤液膜滤浓缩液为研究对象,采用“预处理-气隙膜蒸馏”组合工艺对其进行减量化处理.我们研究了不同组合工艺对浓缩液处理效果的影响,发现从实用性角度考虑,混凝沉淀预处理对于浓缩液的减量化过程具有最佳的运维保障效果,可将膜滤浓缩液的体积减少80%以上.合适的预处理可以显著降低膜污染的程度,提高膜蒸馏膜通量的稳定性和浓缩倍数.

关键词：渗滤液气隙膜蒸馏膜滤浓缩液膜蒸馏减量

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4种香花型石斛花朵的挥发性成分分析

热带亚热带植物学报 2024年第2期32卷 264-272页

作者：张钰莹赵瑞晶许凤李涵李东徽曹桦云南农业大学园林园艺学院昆明650201 云南省农业科学院花卉研究所国家观赏园艺工程技术研究中心昆明650205

为探究石斛属(Dendrobium)盛花期花朵的主要挥发性成分,采用顶空固相微萃取结合GC-MS技术对球花石斛(D.thyrsiflorum)、扭瓣石斛(D.tortile)、鼓槌石斛(D.chrysotoxum)和密花石斛(D.densiflorum)花朵的挥发性成分进行分析。结果表明,4... 详细信息

为探究石斛属(Dendrobium)盛花期花朵的主要挥发性成分,采用顶空固相微萃取结合GC-MS技术对球花石斛(D.thyrsiflorum)、扭瓣石斛(D.tortile)、鼓槌石斛(D.chrysotoxum)和密花石斛(D.densiflorum)花朵的挥发性成分进行分析。结果表明,4种石斛花朵的挥发性成分共70种,包括酯类、醇类、酚类、酮类、烷类、烯类、醛类以及其他等8类,其中烯类总含量最高,为主要挥发性成分。球花和密花石斛的主要香气成分为β-石竹烯,相对含量分别为0.46和6.91μg/(g·h);而扭瓣石斛为醋酸辛酯[6.11μg/(g·h)];鼓槌石斛为β-罗勒烯[5.23μg/(g·h)]。该研究有利于评价和筛选有价值的芳香石斛兰种质资源,为香型石斛兰品种培育和兰花精油的开发利用提供参考。

关键词：石斛属花朵 GC-MS 挥发性成分

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泰国铁路道口控制关键问题研究

铁道通信信号 2024年第7期60卷 90-96页

作者：李瑞璟黄晓辉北京全路通信信号研究设计院集团有限公司北京100070

海外铁路道口的运营需求和技术条件与国内存在显著差异,随着我国越来越多地承担或参与海外铁路项目建设,为满足铁路道口的安全管理和高效运营目标,需研究适应海外项目需求的铁路道口控制系统。通过分析泰国铁路道口系统的功能需求和相... 详细信息

海外铁路道口的运营需求和技术条件与国内存在显著差异,随着我国越来越多地承担或参与海外铁路项目建设,为满足铁路道口的安全管理和高效运营目标,需研究适应海外项目需求的铁路道口控制系统。通过分析泰国铁路道口系统的功能需求和相关技术条件,研究区间道口和站内道口列车接近区段长度设置的计算方法;结合计算机联锁技术条件,分析不同场景下的道口接近通知条件和通知时机;针对列车接近方向、二次接近等特殊技术要求,提出相应的电路优化方案。上述解决方案已应用于泰国复线铁路信号系统改造项目,满足其运营需求及技术条件要求,在确保行车安全的同时,能最大限度减少对行车效率的影响,可为我国信号系统技术及装备“走出去”提供借鉴。

关键词：海外铁路铁路道口计算机联锁区间道口站内道口

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丹波元坚《金匮玉函要略述义》校勘特色探析

浙江中医药大学学报 2024年第2期48卷 215-218页

作者：崔瑞静李玉清山东中医药大学中医文献与文化研究院济南250355

[目的]探析丹波元坚《金匮玉函要略述义》一书的校勘特色,以期为后世研究《金匮要略》提供参考。[方法]运用文献学方法分类整理《金匮玉函要略述义》书中校文,并结合中医理论进行归纳总结。[结果]丹波元坚是日本江户时期汉方医学考证派... 详细信息

[目的]探析丹波元坚《金匮玉函要略述义》一书的校勘特色,以期为后世研究《金匮要略》提供参考。[方法]运用文献学方法分类整理《金匮玉函要略述义》书中校文,并结合中医理论进行归纳总结。[结果]丹波元坚是日本江户时期汉方医学考证派的泰斗。《金匮玉函要略述义》是其父《金匮玉函要略辑义》(以下简称《辑义》)的补注本,汇集三十年学术积累。《金匮玉函要略述义》书中广备精良校本,校勘态度严谨,运用“不径改原文”的校勘方式,结合医理,四校合参,对所校内容审慎从事,不随意否定,精详校勘经文,补订《辑义》未尽之处。[结论]《金匮玉函要略述义》是《金匮要略》的优秀注本,探析其校勘特色对当今中医古籍整理与《金匮要略》研究具有重要的借鉴作用。

关键词：丹波元坚金匮要略金匮玉函要略述义校勘校注校文