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Risk assessment of oil and gas investment environment in countries along the Belt and Road Initiative

Petroleum Science 2024年第2期21卷 1429-1443页

作者： Bao-Jun Tang Chang-Jing Ji Yu-Xian Zheng Kang-Ning Liu Yi-Fei Ma Jun-Yu Chen center for Energy and Environmental policy Research Beijing Institute of TechnologyBeijing100081China School of Management and Economics Beijing Institute of TechnologyBeijing100081China Collaborative Innovation center of Electric Vehicles in Beijing BeijingChina Sustainable Development Research Institute for Economy and Society of Beijing BeijingChina Institute of Carbon Neutrality ShanghaiTech UniversityShanghai201210China

With the implementation of the Belt and Road Initiative, China is deepening its cooperation in oil and gas resources with countries along the Initiative. In order to better mitigate risks and enhance the safety of investments, it is of significant importance to research the oil and gas investment environment in these countries for China's overseas investment macro-layout. This paper proposes an indicator system including 27 indicators from 6 dimensions. On this basis, game theory models combined with global entropy method and analytic hierarchy process are applied to determine the combined weights, and the TOPSIS-GRA model is utilized to assess the risks of oil and gas investment in 76 countries along the Initiative from 2014 to 2021. Finally, the GM(1,1) model is employed to predict risk values for 2022-2025. In conclusion, oil and gas resources and political factors have the greatest impact on investment environment risk, and 12 countries with greater investment potential are selected through cluster analysis in conjunction with the predicted results. The research findings may provide scientific decisionmaking recommendations for the Chinese government and oil enterprises to strengthen oil and gas investment cooperation with countries along the Belt and Road Initiative.

关键词： Belt and Road Initiative Oil and Gas Investment Risk assessment

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Amorphous BaTiO_(3) Electron Transport Layer for Thermal Equilibrium-Governed γ-CsPbl_(3) Perovskite Solar Cell with High Power Conversion Efficiency of 19.96%

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Energy & Environmental Materials 2024年第3期7卷 291-302页

作者： Changhyun Lee Chanyong Lee Kyungjin Chae Taemin Kim Seaeun Park Yohan Ko Yongseok Jun Department of Energy Environment policy and technology Graduate School of Energy and Environment(KU-KIST Green School)Korea UniversitySeoul 02841Republic of Korea Nano Electronic Materials and Components Research center Gumi Electronics and Information Technology Research Institute(GERI)Gumi 39171Republic of Korea Energy Materials Research center Clean Energy Research DivisionKorea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea

Compared to organic-inorganic hybrid perovskites,the cesium-based allinorganic lead halide perovskite(CsPbI_(3))is a promising light absorber for perovskite solar cells owing to its higher resistance to thermal ***,additional research is required to reduce the nonradiative recombination to realize the full potential of CsPbI_(3).Here,the diffusion of Cs ions participating in ion exchange is proposed to be an important factor responsible for the bulk defects inγ-CsPbI_(3)*** based on first-principles density functional theory reveal that the[PbI_(6)]^(4-)octahedral tilt modifies the perovskite crystallographic properties inγ-CsPbI_(3),leading to alterations in its bandgap and crystal *** addition,by substituting amorphous barium titanium oxide(a-BaTiO_(3))for TiO_(2)as the electron transport layer,interfacial defects caused by imperfect energy levels between the electron transport layer and perovskite are ***-resolution transmission electron microscopy and electron energy loss spectroscopy demonstrate that a-BaTiO_(3)forms entirely as a single phase,as opposed to Ba-doped TiO_(2)hybrid nanoclusters or separate domains of TiO_(2)and BaTiO_(3)***,inorganic perovskite solar cells based on the a-BaTiO_(3)electron transport layer achieved a power conversion efficiency of 19.96%.

关键词： amorphous BaTiO_(3) electron transport layer moisture γ-CsPbI_(3)

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Reconsidering gas as clean energy:Switching to electricity for household cooking to reduce NO_(2)-attributed disease burden

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Eco-Environment & health 2024年第2期3卷 174-182页

作者： Ying Hu Ye Wang Zhuohui Zhao Bin Zhao Department of Building Science School of ArchitectureTsinghua UniversityBeijing 100084China School of Public health Fudan UniversityShanghai 200433China Key Laboratory of Public health Safety of the Ministry of Education NHC Key Laboratory of Health Technology AssessmentFudan UniversityShanghai 200433China Shanghai Typhoon Institute/CMA Shanghai Key Laboratory of Meteorology and HealthIRDR International Center of Excellence on Risk Interconnectivity and Governance on Weather/Climate Extremes Impact and Public HealthWMO/IGAC MAP-AQ Asian Office ShanghaiFudan UniversityShanghai 200433China Beijing Key Laboratory of Indoor Air Quality evaluation and Control Tsinghua UniversityBeijing 100084China

Nitrogen dioxide(NO_(2))is a prevalent air pollutant in urban areas,originating from outdoor sources,household gas consumption,and secondhand *** limited evaluation of the disease burden attributable to NO_(2),encompassing different health effects and contributions from various sources,impedes our understanding from a public health *** on modeled NO2 exposure concentrations,their exposure–response relationships with lung cancer,chronic obstructive pulmonary disease,and diabetes mellitus,and baseline disability-adjusted life years(DALYs),we estimated that 1,675(655–2,624)thousand DALYs were attributable to NO2 in urban China in 2019[138(54–216)billion Chinese yuan(CNY)economic losses].The transition from gas to electricity for household cooking was estimated to reduce the attributable economic losses by 35%.This reduction falls within the range of reductions achieved when outdoor air meets the World health Organization interim target 3 and air quality guidelines for annual NO_(2),highlighting the significance of raising awareness of gas as a polluting household energy for *** findings align with global sustainable development initiatives,providing a sustainable solution to promote public health while potentially mitigating climate change.

关键词： Environmental risk Indoor air pollution Nitrogen dioxide health effect Cooking

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Quantification of Central and Eastern China's atmospheric CH_(4) enhancement changes and its contributions based on machine learning approach

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Journal of Environmental Sciences 2024年第4期138卷 236-248页

作者： Xinyue Ai Cheng Hu Yanrong Yang Leying Zhang Huili Liu Junqing Zhang Xin Chen Guoqiang Bai Wei Xiao College of Biology and the Environment Joint Center for sustainable Forestry in Southern ChinaNanjing Forestry UniversityNanjing 210037China Collaborative Innovation center on Forecast and evaluation of Meteorological Disasters(CIC-FEMD) Nanjing University of Information Science&TechnologyNanjing 210044China Guang’an Vocational&Technical College Guangan 638550China HuaNan Meteorological Administration Huanan 154400China

Methane is the second largest anthropogenic greenhouse gas,and changes in atmospheric methane concentrations can reflect the dynamic balance between its emissions and ***,the monitoring of CH_(4) concentration changes and the assessment of underlying driving factors can provide scientific basis for the government’s policy making and *** is the world’s largest emitter of anthropogenic ***,due to the lack of ground-based observation sites,little work has been done on the spatial-temporal variations for the past decades and influencing factors in China,especially for areas with high anthropogenic emissions as Central and Eastern *** to quantify atmospheric CH_(4) enhancements trends and its driving factors in Central and Eastern China,we combined the most up-to-date TROPOMI satellite-based column CH_(4)(xCH_(4))concentration from 2018 to 2022,anthropogenic and natural emissions,and a random forest-based machine learning approach,to simulate atmospheric xCH_(4) enhancements from 2001 to *** results showed that(1)the random forest model was able to accurately establish the relationship between emission sources and xCH_(4) enhancement with a correlation coefficient(R^(2))of 0.89 and a root mean-square error(RMSE)of 11.98 ppb;(2)The xCH_(4) enhancement only increased from 48.21±2.02 ppb to 49.79±1.87 ppb from the year of 2001 to 2018,with a relative change of 3.27%±0.13%;(3)The simulation results showed that the energy activities and waste treatment were the main contributors to the increase in xCH_(4) enhancement,contributing 68.00% and 31.21%,respectively,and the decrease of animal ruminants contributed-6.70% of its enhancement trend.

关键词： TROPOMI Methane column concentrations Anthropogenic sources Random Forest model

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Interdecadal change and projection of the relationship between spring Arctic Oscillation and summer precipitation in the Yangtze River valley in CMIP6 models

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Atmospheric and Oceanic Science Letters 2024年第4期17卷 15-22页

作者： Weikai Jia Botao Zhou Ziyi Song Collaborative Innovation center on Forecast and evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment ChangeNanjing University of Information Science and TechnologyNanjingChina

评估了20个CMIP6模式对春季北极涛动(AO)与长江流域夏季降水(YRP)关系的模拟能力.结果表明, 4个模式(ACCESS-ESM1-5, CMC-CM2-SR5, MRI-ESM2-0, NorESM2-LM))能合理模拟出1990年代后期AO-YRP关系的减弱. 1980-1998年,当春季AO位于正位相时,夏季东亚急流北移,长江流域为异常下沉运动,同时西太平洋副热带高压减弱,减少向长江流域的水汽输送,结果导致降水减少. 1999-2014年,上述大气环流与春季AO的联系不显著,从而减弱AO-YRP的关系.利用这四个模式进一步预估了RCP4.5情景下2015-2100年期间AO-YRP的关系.两者在2015-2040年为显著负相关关系,随后再次减弱.

关键词：北极涛动降水长江流域年代际变化 CMIP6

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Role of bpfA in adhesion and biofilm formation of Shewanella putrefaciens CN32 under cold stress: a comprehensive transcriptomic analysis

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Food Science and Human Wellness 2024年

作者： Zhenghao Guo Ruheng Xiong Jun Yan Jing Xie College of Food Science & technology， Shanghai Ocean University Laboratory for Quality and Safety Risk assessment of Aquatic Products in Storage and Preservation of Ministry of Agriculture and Rural Affairs， Shanghai Ocean University National Experimental Teaching Demonstration center for Food Science and Engineering， Shanghai Ocean University Shanghai Professional technology Service Platform on Cold Chain Equipment Performance and Energy Saving evaluation， Shanghai Ocean University

As a specific spoilage organism of seafood under refrigerated temperature conditions， Shewanella spp. tend to form biofilms that exacerbate the occurrence of seafood spoilage. Biofilm-promoting factor A (BpfA) has been reported to promote the adhesion and biofilm formation of Shewanella spp.， but its role in adhesion and biofilm formation of S. putrefaciens under cold stress needs to be further investigated. To better comprehend the effect of BpfA on adhesion and biofilm formation of S. putrefaciens under cold stress (4℃)， bacterial adhesion and biofilm phenotype of S. putrefaciens CN32 WT and ΔbpfA at 4℃ were analyzed and performed transcriptomics. The results showed that the deletion of bpfA had almost no effect on the growth of S. putrefaciens CN32 at 4℃， but weakened the unicellular adhesion capacity of S. putrefaciens CN32 and destabilized the stability of the multicellular adhesion layer. In addition， the biomass of the mature biofilm formed by ΔbpfA was merely around 50% of that observed in the mature biofilm of S. putrefaciens CN32 WT， the average thickness and volume of the biofilm decreased by 3% and 8%， respectively， and the composition of the biofilm changed. Transcriptome analysis demonstrated that the deletion of bpfA led to differential expression of genes involved in metabolic pathways such as bacterial chemotaxis， two-component system， tyrosine metabolism， drug metabolism-other enzymes and biofilm formation-Vibrio cholerae， which in turn influenced bacterial adhesion and biofilm formation. Those results advance our acknowledge of the character of BpfA on adhesion and biofilm formation of S. putrefaciens CN32， which contributes to understand bacterial adhesion and the control of biofilm formation.

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Security-constrained Transmission Maintenance Optimization Considering Generation and Operational Risk Costs

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Journal of Modern Power Systems and Clean Energy 2024年第3期12卷 767-781页

作者： Dan Xu Zhi Cai Qian Cheng Guodong Huang Jingyang Zhou Junjie Tang Beijing Key Laboratory of Research and System evaluation of Power Dispatching Automation technology China Electric Power Research InstituteBeijing 100192China State Key Laboratory of Power Transmission Equipment&System Security and New technology Chongqing UniversityChongqing 400044China

With the large-scale integration of renewable energy,the traditional maintenance arrangement during the load valley period cannot satisfy the transmission demand of renewable energy ***,in a market-oriented operation mode,the power dispatching control center aims to reduce the overall power purchase cost while ensuring the security of the power ***,a security-constrained transmission maintenance optimization model considering generation and operational risk costs is proposed *** model is built on double-layer optimization framework,where the upper-layer model is used for maintenance and generation planning,and the lowerlayer model is primarily used to address the operational security risk arising from the random prediction error and N-1 transmission ***,a generation-maintenance iterative algorithm based on a defined cost feedback is included to increase solution *** cost is determined using long-term security-constrained unit commitment,and the operational risk cost is obtained using a double-layer N-1 risk assessment *** electrical correlation coupling coefficient is proposed for the solution process to avoid maintenance of associated equipment simultaneously,thereby improving model convergence *** IEEE 118-bus system is used as a test case for illustration,and test results suggest that the proposed model and algorithm can reduce the total cost of transmission maintenance and system operation while effectively improving the solution efficiency of the joint optimization model.

关键词： Transmission maintenance security-constrained unit commitment iterative algorithm cost feedback N−1 risk assessment

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Precise control of page cache for containers

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Frontiers of Computer Science 2024年第2期18卷 17-30页

作者： Kun WANG Song WU Shengbang LI Zhuo HUANG Hao FAN Chen YU Hai JIN National Engineering Research center for Big Data technology and System Services Computing Technology and System LabCluster and Grid Computing Lab School of Computer Science and TechnologyHuazhong University of Science and TechnologyWuhan 430074China

Container-based virtualization isbecoming increasingly popular in cloud computing due to its efficiency and *** isolation is a fundamental property of *** works have indicated weak resource isolation could cause significant performance degradation for containerized applications and enhanced resource ***,current studies have almost not discussed the isolation problems of page cache which is a key resource for *** leverage memory cgroup to control page cache ***,existing policy introduces two major problems in a container-based ***,containers can utilize more memory than limited by their cgroup,effectively breaking memory ***,the Os kernel has to evict page cache to make space for newly-arrived memory requests,slowing down containerized *** paper performs an empirical study of these problems and demonstrates the performance impacts on containerized *** we propose pCache(precise control of page cache)to address the problems by dividing page cache into private and shared and controlling both kinds of page cache separately and *** do so,pCache leverages two new technologies:fair account(f-account)and evict on demand(EoD).F-account splits the shared page cache charging based on per-container share to prevent containers from using memory for free,enhancing memory *** EoD reduces unnecessary page cache evictions to avoid the performance *** evaluation results demonstrate that our system can effectively enhance memory isolation for containers and achieve substantial performance improvement over the original page cache management policy.

关键词： page cache memory cgroup container isolation cloud computing

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Vascular medicine in the 21st century:Embracing comprehensive vasculature evaluation and multidisciplinary treatment

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World Journal of Clinical Cases 2024年第27期12卷 6032-6044页

作者： Yoram Chaiter Daniel Lyon Fink Yossy Machluf The Israeli center for Emerging Technologies in Hospitals and Hospital-Based health technology assessment Shamir(Assaf Harofeh)Medical CenterZerifin 7030100Israel Department of Pediatric Cardiology Unit HaEmek Medical CenterAfula 1834111Israel Shamir Research Institute University of HaifaKazerin 1290000Israel

The field of vascular medicine has undergone a profound transformation in the 21st century,transforming our approach to assessment and ***-sclerosis,a complex inflammatory disease that affects medium and large arteries,presents a major challenge for researchers and healthcare *** condition,characterized by arterial plaque formation and narrowing,poses sub-stantial challenges to vascular health at individual,national,and global *** repercussions are far-reaching,with clinical outcomes including ischemic heart disease,ischemic stroke,and peripheral arterial disease—conditions with esca-lating global *** detection of vascular changes caused by athero-sclerosis is crucial in preventing these conditions,reducing morbidity,and averting *** article underscored the imperative of adopting a holistic approach to grappling with the intricacies,trajectories,and ramifications of *** stresses the need for a thorough evaluation of the vasculature and the implementation of a multidisciplinary treatment *** consi-dering the entire vascular system,healthcare providers can explore avenues for prevention,early detection,and effective management of this condition,ultima-tely leading to improved patient *** discussed current practices and proposed new directions made possible by emerging diagnostic modalities and treatment ***,we considered healthcare expenditure,resour-ce allocation,and the transformative potential of new innovative treatments and technologies.

关键词： Vascular medicine Vasculature assessment Holistic approach Prevention avenues healthcare transformation

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Anti-atherosclerotic effects and molecular targets of ginkgolide B from Ginkgo biloba

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Acta Pharmaceutica Sinica B 2024年第1期14卷 1-19页

作者： Weile Ye Jiaojiao Wang Peter JLittle Jiami Zou Zhihua Zheng Jing Lu Yanjun Yin Hao Liu Dongmei Zhang Peiqing Liu Suowen Xu Wencai Ye Zhiping Liu International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education(MOE)of China Jinan UniversityGuangzhou 510632China Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research College of PharmacyJinan UniversityGuangzhou 510632China State Key Laboratory of Bioactive Molecules and Druggability assessment Jinan UniversityGuangzhou 510632China Pharmacy Australia Centre of Excellence School of PharmacyUniversity of QueenslandWoolloongabba QLD 4102Australia Sunshine Coast health Institute and School of health and Behavioural Sciences University of the Sunshine CoastBirtinya QLD 4575Australia National-Local Joint Engineering Lab of Druggability and New Drugs evaluation Guangdong Provincial Key Laboratory of New Drug Design and EvaluationSun Yat-sen UniversityGuangzhou 510006China School of Pharmacy Bengbu Medical CollegeBengbu 233030China Institute of Endocrine and Metabolic Diseases the First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230026China

Bioactive compounds derived from herbal medicinal plants modulate various therapeutic targets and signaling pathways associated with cardiovascular diseases(CVDs),the world’s primary cause of *** biloba,a well-known traditional Chinese medicine with notable cardiovascular actions,has been used as a cardio-and cerebrovascular therapeutic drug and nutraceutical in Asian countries for *** studies have shown that ginkgolide B,a bioactive component in Ginkgo biloba,can ameliorate atherosclerosis in cultured vascular cells and disease *** clinical relevance,several clinical trials are ongoing or being completed to examine the efficacy and safety of ginkgolide B-related drug preparations in the prevention of cerebrovascular diseases,such as ischemia ***,we present a comprehensive review of the pharmacological activities,pharmacokinetic characteristics,and mechanisms of action of ginkgolide B in atherosclerosis prevention and *** highlight new molecular targets of ginkgolide B,including nicotinamide adenine dinucleotide phosphate oxidases(NADPH oxidase),lectin-like oxidized LDL receptor-1(LOX-1),sirtuin 1(SIRT1),platelet-activating factor(PAF),proprotein convertase subtilisin/kexin type 9(PCSK9)and ***,we provide an overview and discussion of the therapeutic potential of ginkgolide B and highlight the future perspective of developing ginkgolide B as an effective therapeutic agent for treating atherosclerosis.

关键词： Cardiovascular disease Atherosclerosis Ginkgo biloba Ginkgolide B Endothelial dysfunction LOX-1 PCSK9 PAF-R antagonist

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