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Comprehensive insight into the occurrence characteristics,influencing factors and risk assessments of antibiotics in the Chaohu Basin

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Frontiers of Environmental science & Engineering 2024年第5期18卷 57-71页

作者： shuanggang Hu Hongzhi Zhang Yongjie Yang Kangping Cui Junjie ao Xuneng Tong Mengchen shi Yi Wang Xing Chen Chenxuan Li yihan Chen school of Resources and Environmental Engineering Hefei University of TechnologyHefei230009China Ministry of Education-shanghai Key Laboratory of Children’s Environmental Health Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China Department of Civil & Environmental Engineering National University of SingaporeSingapore117576Singapore College of Resources and Environment Anhui Agricultural UniversityHefei230036China

The pollution of antibiotics in aquatic environments has received extensive ***,research on antibiotic contamination in river-lake systems,a significant form of modern aquatic environments,still needs to be *** study focuses on the Chaohu Basin(China)investigating the occurrence characteristics,influencing factors,and risk assessments of antibiotics in the river-lake *** total antibiotic concentrations in the water phase and sediment phase were 3.14–1887.49 ng/L and 0.92–1553.75 ng/g,*** was the predominant antibiotic in the water phase,whereas tetracycline prevailed in the sediment *** differences in concentration and structural composition of antibiotics between the tributaries(river system)and Chaohu Lake were observed,indicating the involvement of various geochemical processes in the attenuation of antibiotics during transport to the receiving *** analysis suggested that the western river is the primary source of antibiotics in Chaohu *** nutrient influx in heavily polluted areas is crucial to addressing the escalating issue of antibiotic pollution in the river-lake *** widespread occurrence of clindamycin in the waters is likely due to wastewater treatment plant discharges,and high-intensity human activities continue to exacerbate antibiotic *** assessment indicated that sulfamethoxazole,tetracycline,lincomycin,and clindamycin ranked in the top four with the highest risks to the most sensitive aquatic ***,the antibiotics presented no risk to consumer *** study provides valuable insights for controlling antibiotic pollution in riverlake systems.

关键词： Antibiotics Occurrence characteristics Influencing factors Risk assessments River-lake system

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spectral flow, Llarull's rigidity theorem in odd dimensions and its generalization

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science China Mathematics 2024年第5期67卷 1103-1114页

作者： yihan Li Guangxiang su Xiangsheng Wang Chern Institute of Mathematics&LPMC Nankai UniversityTianjin 300071China school of Mathematics Shandong UniversityJinan 250100China

For a compact spin Riemannian manifold(M,g^(TM))of dimension n such that the associated scalar curvature kT M verifies that k^(TM)≥n(n-1),Llarull’s rigidity theorem says that any area-decreasing smooth map f from M to the unit sphere sn of nonzero degree is an *** this paper,we present a new proof of Llarull’s rigidity theorem in odd dimensions via a spectral flow *** approach also works for a generalization of Llarull’s theorem when the sphere sn is replaced by an arbitrary smooth strictly convex closed hypersurface in Rn+*** results answer two questions by Gromov(2023).

关键词： Dirac operator scalar curvature spectral flow

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Digital Transformation and the Frontier of China's state Governance

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social sciences in China 2024年第2期45卷 70-91页

作者： Xiong yihan Liu Zhenlin sschool of International Relations and Public Affairs Fudan University

Digital transformation has emerged as a significant area of interest for scholars in global political science and public *** advancement of digital technologies is driving a comprehensive transformation across the economy,society,and governance,thereby profoundly affecting the state governance of *** introduction of new technologies has altered traditional power dynamics,leading to centralization and empowerment-the power redistribution issue of the digital era,which is a fundamental concern in China's state *** effects of technological power,including empowerment and disempowerment of various entities,give rise to or reinforce four secondary issues:the problem of data silos and collaborative governance in internal government operations,the challenges related to technological deficits and platform regulation in market regulation,the issues of the digital divide and social justice in social governance,and concerns about privacy,transparency,and rights *** paper integrates specific cases from China's digital transformation and digital government initiatives to examine these cuttingedge issues and to analyze the impact of digital government reforms implemented by local Chinese governments on traditional government theories.

关键词： digital governance digital transformation state governance

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Occurrence of legacy and Emerging per-and polyfluoroalkyl substances(PFAss)in indoor dust from office environment in south china

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Emerging Contaminants 2024年第3期10卷 329-335页

作者： Yao Cheng yihan Hu Keman Yu Boning Zeng College of Life science and Technology Jinan UniversityGuangzhou 510632China Department of Cardiology The First Affiliated HospitalJinan UniversityGuangzhou 510632China Clinical Medicine Research Institute The First Affiliated HospitalJinan UniversityGuangzhou 510632China Department of Pharmacy The Second Clinical Medical CollegeJinan University(Shenzhen People's Hospital)Shenzhen518020China Integrated Chinese and Western Medicine Postdoctoral Research station Jinan UniversityGuangzhou 510632China

Per-and polyfluoroalkyl substances(PFAss)constitute a broad group of fluorinated organic chemicals that are widely used in consumer products and industrial applications due to their excellent physicochemical *** that people spend a significant portion of their time in office environments,our understanding of the environmental presence and human exposure to these chemicals is *** this study,we conducted a targeted analysis of 24 PFAss in office indoor *** sPFAs concentrations ranged from 51.6 to 219 ng/g with mean(±sE)and median concentrations of 114(±5.75)and 107 ng/g,*** oxide dimer acid(HFPO-DA)was the most abundant emerging PFAs detected in the dust,with mean and median concentrations of 40.5(±1.62)and 40.4 ng/g,respectively,comprising 34.2%of the sPFAs ***,HFPO-DA exhibited a positive correlation with perfluorooctane sulfonate(PFOs)(r:0.427,psuggesting a potential common source for these two *** findings underscore the significant contribution of emerging PFAss to total PFAs concentrations and raise concerns about their chronic toxicity and potential health risks to humans in office indoor environments.

关键词： office properties. propylene

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Accelerating lithium-sulfur battery reaction kinetics and inducing 3D deposition of Li_(2)s using interactions between Fe_(3)se_(4)and lithium polysulfides

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Journal of Energy Chemistry 2024年第8期95卷 540-553,I0012页

作者： yihan Lin Liheng Li Longjie Tan Yongliang Li Xiangzhong Ren Peixin Zhang Chuanxin He Lingna sun College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060GuangdongChina

Although lithium-sulfur batteries(LsBs)exhibit high theoretical energy density,their practical application is hindered by poor conductivity of the sulfur cathode,the shuttle effect,and the irreversible deposition of Li_(2)*** address these issues,a novel composite,using electrospinning technology,consisting of Fe_(3)se_(4)and porous nitrogen-doped carbon nanofibers was designed for the interlayer of *** porous carbon nanofiber structure facilitates the transport of ions and electrons,while the Fe_(3)se_(4)material adsorbs lithium polysulfides(LiPss)and accelerates its catalytic conversion ***,the Fe_(3)se_(4)material interacts with soluble LiPss to generate a new polysulfide intermediate,Li_(x)Fes_(y)complex,which changes the electrochemical reaction pathway and facilitates the three-dimensional deposition of Li_(2)s,enhancing the reversibility of *** designed LsB demonstrates a high specific capacity of1529.6 mA h g^(-1)in the first cycle at 0.2 *** rate performance is also excellent,maintaining an ultra-high specific capacity of 779.7 mA h g^(-1)at a high rate of 8 *** investigation explores the mechanism of the interaction between the interlayer and LiPss,and provides a new strategy to regulate the reaction kinetics and Li_(2)s deposition in LsBs.

关键词： Lithium-sulfur batteries Polysulfide intermediates Li_(2)s electrodeposition Interlayers Electrostatic spinning Adsorption Catalysis

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Energy storage Operation Modes in Typical Electricity Market and Their Implications for China

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Energy Engineering 2024年第9期121卷 2409-2434页

作者： Junhui Liu yihan Zhang Zijian Meng Meng Yang Yao Lu Zhe Chai Zhaoyuan Wu state Grid Henan Economic Research Institute Zhengzhou450052China school of Electrical and Electronic Engineering North China Electric Power UniversityBeijing102206China

As the Chinese government proposes ambitious plans to promote low-carbon transition,energy storage will play a pivotal role in China’s future power ***,due to the lack of a mature electricity market environment and corresponding mechanisms,current energy storage in China faces problems such as unclear operational models,insufficient cost recovery mechanisms,and a single investment entity,making it difficult to support the rapid development of the energy storage *** contrast,European and American countries have already embarked on certain practices in energy storage operation *** exploration of key issues such as investment entities,market participation forms,and cost recovery channels in both front and back markets,a wealth of mature experiences has been ***,this paper first summarizes the existing practices of energy storage operation models in North America,Europe,and Australia’s electricity markets separately from front and back markets,finding that perfect market mechanisms and reasonable subsidy policies are among the main drivers for promoting the rapid development of energy storage ***,combined with the actual development of China’s electricity market,it explores three key issues affecting the construction of costsharing mechanisms for energy storage under market conditions:Market participation forms,investment and operation modes,and cost recovery ***,in line with the development expectations of China’s future electricitymarket,suggestions are proposed fromfour aspects:Market environment construction,electricity price formation mechanism,cost sharing path,and policy subsidy mechanism,to promote the healthy and rapid development of China’s energy storage industry.

关键词： Electricity market energy storage operational mode cost-sharing mechanism

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sPECIAL IssUE:CHINA's sTATE AND sOCIETAL GOVERNANCE UNDER DIGITAL TRA NsFORMATION Introduction

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social sciences in China 2024年第2期45卷 65-69页

作者： Xiong yihan school of International Relations and Public Affairs Fudan University

In recent years,digital governance has come to the fore as an emerging field in political science and public *** governance is distinct from traditional e-government research,which is a relatively narrow field that concentrates on networked government,including online government projects,government information disclosure,and government utilization of modern information technology and the internet.

关键词： FORMAT sPEC narrow

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Integrating BIM and machine learning to predict carbon emissions under foundation materialization stage:Case study of China’s 35 public buildings

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Frontiers of Architectural Research 2024年第4期13卷 876-894页

作者： Haining Wang Yue Wang Liang Zhao Wei Wang Zhixing Luo Zixiao Wang Jinghui Luo yihan Lv school of Architecture Southeast UniversityNanjing 210096China Key Laboratory of Urban and Architectural Heritage Conservation(southeast University) Ministry of EducationNanjing 210096China school of Architecture Xi’an University of Architecture and TechnologyXi’an 710055China Hubei Haizheng Technology Co. LtdWuhan 430000China school of Energy and Environment Engineering Hebei University of EngineeringHandan 056038China state Key Laboratory of Green Building Xi’an University of Architecture and TechnologyXi’an 710055China

For the significant energy consumption and environmental impact,it is crucial to identify the carbon emission characteristics of building foundations construction during the design *** study would like to establish a process-based carbon evaluating model,by adopting Building Information Modeling(BIM),and calculated the materialization-stage carbon emissions of building foundations without basement space in China,and identifying factors influencing the emissions through correlation *** five factors include the building function type,building structure type,foundation area,foundation treatment method,and foundation ***,this study develops several machine learning-based predictive models,including Decision Tree,Random Forest,XGBoost,and Neural *** these models,XGBoost demonstrates a relatively higher degree of accuracy and minimal errors,can achieve the RMsE of 206.62 and R2 of 0.88 based on testing group *** study reveals a substantial variability carbon emissions per building’s floor area of foundations,ranging from 100 to 2000 kgCO_(2)e/m^(2),demonstrating the potential for optimizing carbon emissions during the design phase of ***,materials contribute significantly to total carbon emissions,accounting for 78%e97%,suggesting a significant opportunity for using BIM technology in the design phase to optimize carbon reduction efforts.

关键词： Building foundations Carbon emissions Building information modeling Machine learning sustainable architectural design

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Three Dimensions of Cultivating New Generations: Value Implication, scientific Connotation, and Cultivation Path

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Journal of Contemporary Educational Research 2024年第6期8卷 255-260页

作者： yihan Zhang Yuhang Fang shanghai University of Political science and Law Shanghai 200000China

The new generation of the times is the latest requirement for young people in the new era,and it is the latest training goal for young people put forward by the Party and the country in the face of the second centennial *** the 19th National Congress,it was put forward by the country that the concept of“new generation of the times”for the first time,indicating the training direction and theoretical guidance for the new generation of the *** new age requires young people to have firm ideals and beliefs,excellent skills,and a great spirit of *** proposition of cultivating a new generation of the times is a deep exploration and summary of Marx’s theory of“all-round human development,”Lenin’s youth view and the education view of excellent traditional Chinese culture,and the proposition needs to strengthen the leadership of the Party,give play to the leading role of socialist core values,and the youth themselves should actively act to realize the transformation of theoretical and practical results.

关键词： New generation of the times Value implication scientific connotation Cultivation path

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Group Images of Korean Women on Douyin:Representation,Generation,and Identification

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Cultural and Religious studies 2024年第2期12卷 95-103页

作者： JIN yihan CHEN Lu Hubei University WuhanChina

since 2023,the slogan“Question Korean women,understand Korean women,learn Korean women”has become popular in Chinese social ***,Chinese netizens have not paid such attention to women from other *** response to this phenomenon,this paper combines neoliberal feminist theories with thematic analysis to obtain a total of 80 valid samples from the Douyin platform to analyze the image of Korean women disseminated on the Douyin ***,it is concluded that the image of Korean women’s strict self-discipline,internal and external cultivation,sobriety of thought,and the spirit of courageous struggle have to a certain extent promoted the awakening of self-consciousness of female netizens in China;on the other hand,it is also necessary to realize that the image of Korean women disseminated in Douyin is not completely true,and it is also necessary to be alert to the phenomenon that the gender dichotomy has been reduced to the attraction of network traffic and capital as a sharp weapon.

关键词： Douyin Korean women feminism group images

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