检索结果-南通市图书馆

Temporal and spatial analysis of vegetation fire activity in the circum-Arctic during 2001–2020

在线全文

学校读者我要写书评

暂无评论

Research in Cold and Arid Regions 2023年第1期15卷 48-56页

作者： XinTong Chen ShiChang Kang yuling hu Junhua Yang State Key Laboratory of Cryospheric Science Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouGansu730000China University of Chinese Academy of Sciences Beijing100049China

Vegetation fires become the concern worldwide due to their substantial impacts on climate and environment,and in particular in the circum-Arctic.Assessing vegetation fires and associated emissions and causes can improve understanding of fire regime and provide helpful information for vegetation fires solution.In this study,satellitebased vegetation fires and emissions during 2001–2020 were investigated and contributions of different types of fires were analyzed.Furthermore,climate anomalies related to extreme vegetation fires were explored.The main results showed that the region south of the Arctic circle(50°N-67°N)experienced a greater number of vegetation fires compared to the Arctic(north of 67°N).During 2001–2020,interannual variability of vegetation fires between 50°N and 67°N appeared to be decreasing while emissions(including carbon,dry matter,PM_(2.5),and BC)appeared to be increasing overall,which were contributed by the increasing summer boreal forest fires in this region largely.In the Arctic,vegetation fires and emissions increased in recent years distinctly,and those were dominated by the summer forest fires.Spatially,large increases of vegetation fires were located in the eastern Siberia and northern North America while large decreases were located in the northwestern Eurasia mainly.Additionally,in the Arctic,the unprecedented vegetation fires were observed in the eastern Siberia and Alaska in 2019 and in the eastern Siberia in 2020,which could be attributed to high pressure,high near-surface temperature,and low air moisture anomalies.Meanwhile,obvious anticyclonic anomalies in Alaska in 2019 and in the eastern Siberia in 2020 and cyclonic anomalies in the western Siberia in 2019,also played an important role on fire occurrences making drier conditions.

关键词： Circum-Arctic Vegetation fires Emissions Sources Climate

Optimization of Grouping Evacuation Strategy in High-rise Building Fires Based on Graph Theory and Computational Experiments

在线全文

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2018年第6期5卷 1104-1112页

作者： yuling hu Xiwei Liu School of Electrical and Information Engineering Beijing University of Civil Engineering and Architecture Beijing 100044China Beijing Key Laboratory of Intelligent Processing for Building Big Data Beijing 100044China State Key Laboratory fo Management and Control for Complex Systems Institute of Automation Chinese Academy of SciencesBeijing 100190China Qingdao Academy of Intelligent Industries Qingdao 266109China

It is difficult to rescue people from outside, and emergency evacuation is still a main measure to decrease casualties in high-rise building fires. To improve evacuation efficiency, a valid and easily manipulated grouping evacuation strategy is proposed. Occupants escape in groups according to the shortest evacuation route is determined by graph theory. In order to evaluate and find the optimal grouping, computational experiments are performed to design and simulate the evacuation processes. A case study shown the application in detail and quantitative research conclusions is obtained. The thoughts and approaches of this study can be used to guide actual high-rise building evacuation processes in future.

关键词：高层建筑火灾救灾工作分组疏散策略

在线全文

学校读者我要写书评

暂无评论

涉案企业合规改革中刑行衔接的困境与对策

税务研究 2024年第4期 84-90页

作者：胡裕岭华东政法大学刑事法学院

涉案企业合规改革以合规不起诉为主要刑事处理手段,凸显了刑行衔接问题,滋生了“以刑代罚”风险。在涉税合规案件移送处理中,税务机关既因权责所限无法对非纳税义务主体作出行政处罚,也因行政权的不可处分性缺乏对被移送对象作出从宽或... 详细信息

涉案企业合规改革以合规不起诉为主要刑事处理手段,凸显了刑行衔接问题,滋生了“以刑代罚”风险。在涉税合规案件移送处理中,税务机关既因权责所限无法对非纳税义务主体作出行政处罚,也因行政权的不可处分性缺乏对被移送对象作出从宽或减免处罚的法律依据,出现与涉案企业合规改革相悖的困境。我国涉案企业合规的构建应当以企业纳入刑事追诉或行政处罚的对象为前提,明确违法犯罪与企业管理责任的相关性,在立法上构建行刑制裁一体化机制,实现行刑处罚的比例相称和同质互认,进而完善合规启动、监督评估的检税(检察机关与税务机关)合作机制。

关键词：税务合规刑行衔接反向移送一体化惩罚

A dual-functional membrane for bisphenol A enrichment and resonance amplification by surface-enhanced Raman scattering

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2018年第3期29卷 509-512页

作者： Haoyu Lei yuling hu Gongke Li School of Chemistry Sun Yat-sen University

Bisphenol A （BPA） was one of the environmental hormones that would cause endocrine and metabolic disorders in human or wildlife. This paper proposed a method to detect the trace amounts of BPA in water samples by fully utilizing the enrichment and resonance amplification functions of a new dual-functional membrane. In this work, gold nanoparticles （AuNPs） modified by 3-amino-5-mercapto-1,2,4-triazole （AMT） were embedded in nylon66 membrane to produce a dual-functional membrane which could carry out sample enrichment by capturing BPA molecules from water and achieve resonance amplification by connecting BPA to the surfaces of AuNPs. By designing an automatic sampler for large-volume enrichment, the SERS enhancement factor （EF） of the method was further improved to 1.2 × 105. The present method had been successfully applied to detect BPA in drinking water and environmental water by SERS with the detection limit of 0.012 μg/L. It had the potential for on-site detecting of BPA in various water samples.

关键词： Dual-functional membrane Enrichment Resonance amplification Bisphenol A Surface-enhanced Raman scattering

生成式人工智能的数据治理与“囚笼”——基于行业主体自我监管的回应型研究

在线全文

学校读者我要写书评

暂无评论

征信 2024年第2期42卷 46-57页

作者：胡裕岭姚浩亮华东政法大学刑事法学院上海201620

以ChatGPT为代表的生成式人工智能自面世伊始即引人瞩目,数据、算法、算力作为推动生成式人工智能前行的“三驾马车”对其重要性不言而喻。然而,生成式人工智能引发的数据之殇,如数据泄露、数据垄断等亦挑战着传统数据治理框架。在智能... 详细信息

以ChatGPT为代表的生成式人工智能自面世伊始即引人瞩目,数据、算法、算力作为推动生成式人工智能前行的“三驾马车”对其重要性不言而喻。然而,生成式人工智能引发的数据之殇,如数据泄露、数据垄断等亦挑战着传统数据治理框架。在智能时代,基于应用场景的分散治理、基于风险预防的事前治理、基于公权主导的硬性治理均难以满足治理与发展的双重需要。行业主体基于其专业性、及时性、协同性等灵活优势理应在智能时代的数据治理中发挥积极作用,却饱受自监自管、缺乏动力等诟病。目前,新加坡的问责制协同治理模式、美国的软法治理模式均反映着行业主体自我监管的可行性,且证实了自我监管并非完全自治。因此,以自我监管为着力点,从微观、中观、宏观三个角度构建数据治理新范式有其现实意义。

关键词： ChatGPT 生成式人工智能数据治理自我监管

Application Value of Nursing Intervention for Patients with Pancreatitis After Endoscopic Retrograde Cholangiopancreatography(ERCP)

在线全文

学校读者我要写书评

暂无评论

Journal of Clinical and Nursing Research 2023年第6期7卷 24-29页

作者： Haixia Shan Wei Zhou Yanyan Cai Fang Zhou yuling hu The 71st Group Army Hospital of the People's Liberation Army Xuzhou 221000Jiangsu ProvinceChina

Objective:To explore and analyze the application value of nursing intervention for patients with pancreatitis after endoscopic retrograde cholangiopancreatography(ERCP).Methods:From May 2022 to May 2023,100 patients with pancreatitis after ERCP who were admitted to the General Surgery Department of our hospital were selected as the research objects,they were divided into a research group and a general group by flipping coins,with 50 cases in each group.The research group received nursing intervention,and the general group received general nursing.The postoperative index recovery time,quality of life,and emotional performance were compared between the two groups.Results:The blood amylase recovery time,abdominal pain recovery time,white blood cell recovery time,and hospitalization time in the research group were significantly lower than those in the general group(P0.05);after intervention,the mentioned quality of life indicators were significantly better than that of the general group(P0.05);after intervention,the SAS and SDS scores of the research group were significantly better than those of the general group(P<0.05).Conclusion:The application of nursing intervention in patients with pancreatitis after ERCP has high clinical value and specific practical significance.

关键词： Endoscopic retrograde cholangiopancreatography(ERCP) Concurrent pancreatitis Nursing intervention

In Situ Growth of Flexible Polyphenylene-Conjugated Microporous Polymer Films for Fluorescence Detection of the Total Quantity of Developing Agents and Their Oxidation Products

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Analysis and Testing 2017年第1期1卷 40-46页

作者： Langjun Zhou Yi Peng yuling hu Gongke Li School of Chemistry Sun Yat-sen UniversityGuangzhou 510275China

Conjugated microporous polymers(CMPs)are a kind of porous skeleton polymers,which are characterized by extended conjugated skeletons,large specific surface area and structure stability.In this work,a facile and versatile method was developed to fabricate flexible conjugated microporous polymer films for fast detecting the total quantity of developing agents and their oxidation products.Conjugated microporous polymer films were synthesized through in situ one-step approach by Suzuki coupling reaction.With such merits such as intense luminescence,easy synthesis and disposability,the polymer films were employed to detect developers based on fluorescence quenching in the printing wastewater.A linear response to p-benzoquinone,oxidation product of developers,was obtained in the range of 0.05-0.5 lmolL-1,with a detection limit of 0.015 lmolL-1.The strategy for in situ growth of flexible polyphenylene-conjugated microporous polymer(PP-CMP)films seems to be a very portable and general method for meeting different analytic purposes.

关键词： Conjugated microporous polymers Films Fluorescence detection Developing agents

Core(Au)-shell(Ag)structure nitrogen dots for the recognition of nitroaniline isomers by surface-enhanced Raman scattering

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2019年第3期30卷 638-642页

作者： Jiani Yang Ling Xia Zhenhua Lin Zhijiao Tang Gongke Li yuling hu School of Chemistry Sun Yat-sen University

In this work, we report a facile synthesis method for NDs-Au@AgNPs surface-enhanced Raman scattering(SERS) substrate using Au seeds prepared by nitrogen-rich quantum dots(NDs). As a new member of quantum-dots family, NDs are rich in nitrogen and oxygen-containing functional groups and therefore can be used as an efficient reducing and stabilizing agent for the synthesis of AuNPs. The NDs-Au@AgNPs with core-shell structures was synthesized by seed-mediated growth method in presence of NDs-AuNPs seeds and exhibited high SERS activity with a high SERS enhancement factor of 10~7. The NDs-Au@AgNPs SERS substrate was effectively used for the recognition and detection of isomers of meta, ortho and para nitroanilines, while commercial SERS substrate cannot. In addition, the possible adsorption behavior was further studied, which is of great significance for the related work about differentiation of isomers and the mechanism of SERS enhancement.

关键词： Nitrogen-rich quantum dots NDs-Au@AgNPs Nitroaniline isomers Surface-enhanced Raman scattering Adsorption behavior

Modifications in aerosol physical, optical and radiative properties during heavy aerosol events over Dushanbe, Central Asia

在线全文

学校读者我要写书评

暂无评论

Geoscience Frontiers 2021年第6期12卷 299-312页

作者： Dipesh Rupakheti Maheswar Rupakheti Xiufeng Yin Julian Hofer Mukesh Rai yuling hu Sabur F.Abdullaev Shichang Kang State Key Laboratory of Cryospheric Science Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China Institute for Advanced Sustainability Studies PotsdamGermany Leibniz Institute for Tropospheric Research LeipzigGermany Physical Technical Institute of the Academy of Sciences of Tajikistan DushanbeTajikistan Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of SciencesBeijing 100101China

The location of Central Asia,almost at the center of the global dust belt region,makes it susceptible for dust events.The studies on atmospheric impact of dust over the region are very limited despite the large area occupied by the region and its proximity to the mountain regions (Tianshan,Hindu Kush-KarakoramHimalayas,and Tibetan Plateau).In this study,we analyse and explain the modification in aerosols’physical,optical and radiative properties during various levels of aerosol loading observed over Central Asia utilizing the data collected during 2010–2018 at the AERONET station in Dushanbe,Tajikistan.Aerosol episodes were classified as strong anthropogenic,strong dust and extreme dust.The mean aerosol optical depth (AOD) during these three types of events was observed a factor of ~3,3.5 and 6.6,respectively,higher than the mean AOD for the period 2010–2018.The corresponding mean fine-mode fraction was 0.94,0.20 and 0.16,respectively,clearly indicating the dominance of fine-mode anthropogenic aerosol during the first type of events,whereas coarse-mode dust aerosol dominated during the other two types of events.This was corroborated by the relationships among various aerosol parameters (AOD vs.AE,and EAE vs.AAE,SSA and RRI).The mean aerosol radiative forcing (ARF) at the top of the atmosphere (ARF_(TOA)),the bottom of the atmosphere (ARF_(BOA)),and in the atmosphere (ARFATM) were -35±7,-73±16,and38±17 Wm^(-2)during strong anthropogenic events,-48±12,-85±24,and 37±15 Wm^(-2)during strong dust event,and -68±19,-117±38,and 49±21 Wm-2during extreme dust events.Increase in aerosol loading enhanced the aerosol-induced atmospheric heating rate to 0.5–1.6 K day^(-1)(strong anthropogenic events),0.4–1.9 K day^(-1)(strong dust events) and 0.8–2.7 K day^(-1)(extreme dust events).The source regions of air masses to Dushanbe during the onset of such events are also identified.Our study contributes to the understanding of dust and anthropogenic aerosols,in particular the extreme events and their disproportionally high radiativ

关键词： Dust events Aerosol optical properties AERONET Dushanbe Central Asia