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Surface-immobilized cross-linking tetraalkylammonium cations networks mitigate hydrogen evolution for pure acidic CO2reduction in proton-exchange membrane electrolyzers 认领 引用 被引量：1
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作者 Min Zhang Zengyi Tan +3 位作者 Mufan Xing Yang Wang Xun Zhu Qian Fu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第1期90-96,I0004,共7页
The scaling-up of electrochemical CO2reduction requires circumventing the CO2loss as carbonates under alkaline conditions.Zero-gap MEA cell configurations with a proton exchange membrane represent an alternative... The scaling-up of electrochemical CO2reduction requires circumventing the CO2loss as carbonates under alkaline conditions.Zero-gap MEA cell configurations with a proton exchange membrane represent an alternative solution in a pure acidic system,but the catalyst layer in direct contact with the hydrated proton environment usually leads to H2evolution dominating.Herein,we show that polydimethyldiallyl-ammonium-chloride-coated Ag(Ag@PDDA)electrode exhibits outstanding performance with a FE of 86%,a single-pass conversion of 72%,and a stability of 28 h for CO production in pure-acid MEA compared with ammonium poly(N-methyl-piperidine-co-pterphenyl)decorated Ag(Ag/QAPPT)and cetyltrimethylammonium bromide decorated Ag(Ag/CTAB).The in situ ATR-SEIRAS reveal that PDDA creates a positive charge-rich protective outer layer and an N-rich hybrid inner layer,which not only suppresses the migration of H+during the electrolysis process and blocks the direct contact between H2O and Ag catalyst,but also promotes the generation from CO2to*COOH in a pure-acid system.This work highlights the importance of polyelectrolyte engineering in regulating the electrocatalytic interface and accelerates the development of proton exchange membrane CO2electrolysis. 展开更多
关键词 Pure acidic CO2electroreduction Mitigate hydrogen evolution Polyelectrolyte cations MEA electrolyzer
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CMBA-FL: Communication-mitigated and blockchain-assisted federated learning for traffic flow predictions 认领 引用 被引量：1
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作者 Kaiyin Zhu Mingming Lu +2 位作者 Haifeng Li Neal NXiong Wenyong He 《Digital Communications and Networks》 SCIE EI CSCD 2025年第3期724-733,共10页
As an effective strategy to address urban traffic congestion,traffic flow prediction has gained attention from Federated-Learning(FL)researchers due FL’s ability to preserving data privacy.However,existing methods fa... As an effective strategy to address urban traffic congestion,traffic flow prediction has gained attention from Federated-Learning(FL)researchers due FL’s ability to preserving data privacy.However,existing methods face challenges:some are too simplistic to capture complex traffic patterns effectively,and others are overly complex,leading to excessive communication overhead between cloud and edge devices.Moreover,the problem of single point failure limits their robustness and reliability in real-world applications.To tackle these challenges,this paper proposes a new method,CMBA-FL,a Communication-Mitigated and Blockchain-Assisted Federated Learning model.First,CMBA-FL improves the client model’s ability to capture temporal traffic patterns by employing the Encoder-Decoder framework for each edge device.Second,to reduce the communication overhead during federated learning,we introduce a verification method based on parameter update consistency,avoiding unnecessary parameter updates.Third,to mitigate the risk of a single point of failure,we integrate consensus mechanisms from blockchain technology.To validate the effectiveness of CMBA-FL,we assess its performance on two widely used traffic datasets.Our experimental results show that CMBA-FL reduces prediction error by 11.46%,significantly lowers communication overhead,and improves security. 展开更多
关键词 Blockchain Communication mitigating Federated learning Traffic flow prediction
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Bone loss from Wnt inhibition mitigated by concurrent alendronate therapy 认领 引用 被引量：7
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作者 Babita Madan Mitchell J.McDonald +3 位作者 Gabrielle E.Foxa Cassandra R.Diegel Bart O.Williams David M.Virshup 《Bone Research》 SCIE CAS CSCD 2018年第2期167-176,共10页
Dysregulated Wnt signaling is associated with the pathogenesis of cancers, fibrosis, and vascular diseases. Inhibition of Wnt signaling has shown efficacy in various pre-clinical models of these disorders. One of the ... Dysregulated Wnt signaling is associated with the pathogenesis of cancers, fibrosis, and vascular diseases. Inhibition of Wnt signaling has shown efficacy in various pre-clinical models of these disorders. One of the key challenges in developing targeted anti-cancer drugs is to balance efficacy with on-target toxicity. Given the crucial role Wnts play in the differentiation of osteoblasts and osteoclasts, acute inhibition of Wnt signaling is likely to affect bone homeostasis. In this study, we evaluated the skeletal effect of small molecule inhibitor of an o-acyl transferase porcupine（PORCN） that prevents Wnt signaling by blocking the secretion of all Wnts. Micro-computed tomography and histomorphometric evaluation revealed that the bones of mice treated with two structurally distinct PORCN inhibitors LGK974 and ETC-1922159（ETC-159） had loss-of-bone volume and density within 4 weeks of exposure. This decreased bone mass was associated with a significant increase in adipocytes within the bone marrow. Notably,simultaneous administration of a clinically approved anti-resorptive, alendronate, a member of the bisphosphonate family,mitigated loss-of-bone mass seen upon ETC-159 treatment by regulating activity of osteoclasts and blocking accumulation of bone marrow adipocytes. Our results support the addition of bone protective agents when treating patients with PORCN inhibitors.Mitigation of bone toxicity can extend the therapeutic utility of Wnt pathway inhibitors. 展开更多
关键词 Wnt ETC Bone loss Wnt inhibition mitigated concurrent alendronate therapy
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Circulating Neutrophil Counts Decrease in Response to Mitigated Air Quality in Stable COPD Patients 认领 引用 被引量：3
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作者 ZHANG Zi Li WANG Jian +4 位作者 LIU Fen DING Ming Jing LIU Fei CHEN Si Fan LU Wen Ju 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2018年第1期66-71,共6页
This three-year study, based on the Guangzhou Institute of Respiratory Disease （GRID）, chronic obstructive pulmonary disease （COPD） Biobank, was conducted in 36 COPD patients to estimate whether changes in levels ... This three-year study, based on the Guangzhou Institute of Respiratory Disease （GRID）, chronic obstructive pulmonary disease （COPD） Biobank, was conducted in 36 COPD patients to estimate whether changes in levels of leukocytes, erythrocytes, hemoglobin, and platelets were related to changes in air pollutant concentration. Daily NO2 levels exhibited significant differences between baseline years and the 2010 Asian Game period. We observed significant reductions in leukocyte and neutrophils counts levels, by 15.51% and 23.01%, from pre-Asian Games to during-Asian Games, respectively. In the post-Asian Game period, most pollutants approximated pre-Asian Game period levels, and similar effects were demonstrated in leukocyte and neutrophil counts. For both items, we identified significant increases resulting from elevated NO2 at lag days 0-2/5-6. We concluded that reductions in pollutants during the intervention period were associated with inactivation of hematological events in COPD. 展开更多
关键词 Circulating Neutrophil Counts Decrease Mitigated Air Quality in Stable COPD Patients
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Systematic approach to assess and mitigate iongwall subsidence influences on surface structures 认领 引用 被引量：2
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作者 罗毅 《Journal of Coal Science & Engineering(China)》 2008年第3期407-414,共8页
The surface subsidence process associated with Iongwall mining operations is often capable of causing disturbances to various surface structures.Inadequate consid- erations of the subsidence influences could result in... The surface subsidence process associated with Iongwall mining operations is often capable of causing disturbances to various surface structures.Inadequate consid- erations of the subsidence influences could result in poor public relation with local resi- dents and regulatory agencies,uneconomic operations,hazardous conditions,etc.A sys- tematic approach to assess and mitigate influences caused by Iongwall subsidence had been developed and adopted to minimize the severity of these potential problems.The approach included accurate prediction of final and dynamic surface movements and de- formations,assessment of the severities and locations of the potential disturbances,and design and implementation of proper mitigation measures.The approach had been suc- cessfully applied at many Iongwall mining companies on numerous and various residential farming,public and industrial structures.As a matter of fact,the state of Pennsylvania,the state with largest number of Iongwall mines and highest Iongwall production in U.S.,would like to use such approach as the standards in dealing with Iongwall subsidence cases. 展开更多
关键词 longwall subsidence surface structures mitigate influences
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Dietary supplementation of dried plum:a novel strategy to mitigate heat stress in broiler chickens 认领 引用 被引量：7
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作者 Sanjeev Wasti Nirvay Sah +3 位作者 Amit K.Singh Chin N.Lee Rajesh Jha Birendra Mishra 《Journal of Animal Science and Biotechnology》 SCIE CAS CSCD 2021年第3期1056-1072,共17页
Background:Heat stress is a significant problem in the poultry industry,causing a severe economic loss due to its detrimental effects on chickens’health and performance.Dried plum(DP)is a good source of minerals,vita... Background:Heat stress is a significant problem in the poultry industry,causing a severe economic loss due to its detrimental effects on chickens’health and performance.Dried plum(DP)is a good source of minerals,vitamins,antioxidants,and phenolic compounds.Studies have suggested that DP has several health benefits,such as maintaining the body’s redox system,immune status,and calcium hemostasis.Based on the health benefits of DP,we hypothesized that the dietary supplementation of DP would alleviate the detrimental effects of heat stress on broiler chickens.Results:To test the hypothesis,day-old broiler chicks(n=72)were randomly allocated to three treatment groups(n=24/group):no heat stress(NHS),heat stress(HS),and heat stress with dried plum(HS+DP),and reared under standard conditions.The inclusion of 2.5%DP in the feed of the HS+DP group was made during the treatment period,while birds in other groups were provided with a standard finisher diet.After 21 days,birds in the HS and HS+DP groups were exposed to cyclic heat stress conditions(33℃ for 8 h during daytime)for 3 weeks,while those in the NHS group were reared under normal conditions(22-24℃).Weekly body weight and feed intake were recorded to calculate the average daily gain(ADG),average daily feed intake(ADFI),and feed conversion ratio(FCR).Heat stress significantly decreased the final body weight,ADG,ADFI,and increased FCR compared to the NHS group,whereas dietary supplementation of DP significantly improved these growth performance parameters compared to the HS group.Furthermore,supplementation of DP significantly increased the expression of heat shock protein-related genes(HSF1,HSF3,HSP70,and HSP90),antioxidant-related genes(SOD1,SOD2,GPX1,GPX3,PRDX1,and TXN),tight junction-related genes(CLDN1,and OCLN),and immune-related genes(IL4,MUC2)in the ileum as compared to the HS group.The microbiota analysis showed significant enrichment of Bacillales,Christensenellaceae,Bacillaceae,Peptostreptococcaceae,and Anaerotruncus in heat-stressed birds supplemented with DP as compared to the HS group.Further,DP supplementation also significantly increased the concentration of acetate,propionate,and total VFA in the cecal digesta of the HS+DP group as compared to the HS group.Conclusion:These findings suggest that DP supplementation effectively improved the growth performances and gut health parameters in the heat-stressed birds.Thus,dried plum can be a potential feed supplement to mitigate heat stress in broiler chickens. 展开更多
关键词 Dried plum Gene expression Heat stress Microbiota Mitigation
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Strategy to mitigate single event upset in 14-nm CMOS bulk FinFET technology 认领 引用 被引量：1
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作者 Dong-Qing Li Tian-Qi Liu +3 位作者 Pei-Xiong Zhao Zhen-Yu Wu Tie-Shan Wang Jie Liu 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第5期527-534,共8页
Three-dimensional(3 D)TCAD simulations demonstrate that reducing the distance between the well boundary and N-channel metal-oxide semiconductor(NMOS)transistor or P-channel metal-oxide semiconductor(PMOS)transistor ca... Three-dimensional(3 D)TCAD simulations demonstrate that reducing the distance between the well boundary and N-channel metal-oxide semiconductor(NMOS)transistor or P-channel metal-oxide semiconductor(PMOS)transistor can mitigate the cross section of single event upset(SEU)in 14-nm complementary metal-oxide semiconductor(CMOS)bulk Fin FET technology.The competition of charge collection between well boundary and sensitive nodes,the enhanced restoring currents and the change of bipolar effect are responsible for the decrease of SEU cross section.Unlike dualinterlock cell(DICE)design,this approach is more effective under heavy ion irradiation of higher LET,in the presence of enough taps to ensure the rapid recovery of well potential.Besides,the feasibility of this method and its effectiveness with feature size scaling down are discussed. 展开更多
关键词 TCAD simulation FinFET single event upset(SEU)mitigation
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Residual stress modeling of mitigated fused silica damage sites with CO2laser annealing 认领 引用
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作者 张传超 廖威 +3 位作者 张丽娟 蒋晓龙 方振华 蒋晓东 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第3期509-514,共6页
A numerical model based on measured fictive temperature distributions is explored to evaluate the residual stress fields of CO2laser-annealed mitigated fused silica damage sites.The proposed model extracts the resi... A numerical model based on measured fictive temperature distributions is explored to evaluate the residual stress fields of CO2laser-annealed mitigated fused silica damage sites.The proposed model extracts the residual strain from the differences in thermoelastic contraction of fused silica with different fictive temperatures from the initial frozen-in temperatures to ambient temperature.The residual stress fields of mitigated damage sites for the CO2laser-annealed case are obtained by a finite element analysis of equilibrium equations and constitutive equations.The simulated results indicate that the proposed model can accurately evaluate the residual stress fields of laser-annealed mitigated damage sites with a complex thermal history.The calculated maximum hoop stress is in good agreement with the reported experimental result.The estimated optical retardance profiles from the calculated radial and hoop stress fields are consistent with the photoelastic measurements.These results provide sufficient evidence to demonstrate the suitability of the proposed model for describing the residual stresses of mitigated fused silica damage sites after CO2laser annealing. 展开更多
关键词 fused silica damage mitigation residual stress laser annealing
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Role of Organic Amendments to Mitigate Cd Toxicity and Its Assimilation in Triticum aestivum L. 认领 引用
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作者 Tauqeer Ahmad Yasir Sobia Aslam +9 位作者 Muhammad Shahid Rizwan Allah Wasaya Muhammad Ateeq Muhammad Naeem Khan Sikander Khan Tanveer Walid Soufan Basharat Ali Allah Ditta Arpna Kumari Ayman EL Sabagh 《Phyton-International Journal of Experimental Botany》 SCIE 2022年第11期2491-2504,共14页
In soil biota,higher and enduring concentration of heavy metals like cadmium(Cd)is hazardous and associated with great loss in growth,yield,and quality parameters of most of the crop plants.Recently,in-situ applicatio... In soil biota,higher and enduring concentration of heavy metals like cadmium(Cd)is hazardous and associated with great loss in growth,yield,and quality parameters of most of the crop plants.Recently,in-situ applications of eco-friendly stabilizing agents in the form of organic modifications have been utilized to mitigate the adverse effects of Cd-toxicity.This controlled experiment was laid down to appraise the imprints of various applied organic amendments namely poultry manure(PM),farmyard manure(FYM),and sugarcane press mud(PS)to immobilize Cd in polluted soil.Moreover,phytoavailability of Cd in wheat was also accessed under an alkaline environment.Results revealed that the addition of FYM(5–10 ton ha-1)in Cd-contaminated soil significantly increased germination rate,leaf chlorophyll content,plant height,spike length,biological and grain yield amongst all applied organic amendments.Moreover,the addition of FYM(5–10 ton ha-1)also reduced the phytoavailability of Cd by 73–85%in the roots,57–83%in the shoots,and 81–90%in grains of wheat crop.Thus,it is affirmed that incorporation of FYM(5–10 ton ha-1)performed better to enhance wheat growth and yield by remediating Cd.Thus,the application of FYM(5–10 ton ha-1)reduced the toxicity induced by Cd to plants by declining its uptake and translocation as compared to all other applied organic amendments to immobilize Cd under sandy alkaline polluted soil. 展开更多
关键词 Cadmium toxicity mitigation chlorophyll attributes morphometry yield attributes cereal
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Self-discharge mitigated supercapacitors via hybrid CuO-nickel sulfide heterostructure for energy efficient, wireless data storage application 认领 引用
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作者 Dhananjay Mishra Seungyeob Kim +2 位作者 Niraj Kumar Mokurala Krishnaiah Sung Hun Jin 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第16期77-90,共14页
With the surge of demand for instant high power in miniaturized electronic and mechanical systems,supercapacitors(SCs)are considered as one of the viable candidates to fulfill the requirements.Thus,long-term resilienc... With the surge of demand for instant high power in miniaturized electronic and mechanical systems,supercapacitors(SCs)are considered as one of the viable candidates to fulfill the requirements.Thus,long-term resilience and superior energy density associated with self-discharge in SCs are obviously critical,but securing electrode materials,which can meet both benefits of SCs and persist charged potential for a comparatively prolonged duration,are still elusive.Herein,hierarchically refined nickel-sulfide heterostructure(CuO-NS)on CuO(CO)scaffold is achieved through optimized film formation,exhibiting a threefold improvement in the essential electrochemical characteristics and outstanding capacitance retention(∼5%loss).Self-discharge behavior and its mechanism are systematically investigated via morphological control and nanostructural evolution.Furthermore,significant mitigation of self-discharge owing to an increase in surface area and refined nanostructure is displayed.Remarkably,CuO-NS2(20 cycle overcoating)based SC can retain over 60%of the charged potential for a complete voltage holding and a self-discharge test for 16 h.An appealing demonstration of wireless power transmission in burst mode is demonstrated for secure digital(SD)card data writing,powered by SCs,which substantiates that it can be readily leveraged in power management systems.This enables us to realize one of the envisioned applications soon. 展开更多
关键词 CuO-Ni3S2hierarchical heterostructure Voltage holding test Supercapacitor Self-discharge mitigation Wireless power transmission
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Study the Effectiveness of ISO 27001 to Mitigate the Cyber Security Threats in the Egyptian Downstream Oil and Gas Industry 认领 引用
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作者 Mohamed Shohoud 《Journal of Information Security》 2023年第2期152-180,共29页
As Egyptian oil and gas downstream information technology has grown digitally over the past decade, security breaches against these digitally connected systems have also increased. These cyber security threats could h... As Egyptian oil and gas downstream information technology has grown digitally over the past decade, security breaches against these digitally connected systems have also increased. These cyber security threats could have devastating effects on the operations and reputation of these companies. Preventing such cyberattacks is crucial. Especially, with the significance of the Egyptian oil and gas downstream sector to the local economy and the fact that many of these connected systems are sometimes managed remotely. This paper examines the value of the ISO 27001 standard in mitigating the effect of cyber threat and seeks to inspire decision-makers to the importance of the proactive measures to strengthen their organization’s cybersecurity posture and protect information critical assets. The study stresses the importance of improving the local educational system to bridge the gap between supply and demand for cybersecurity specialists by implementing a structured approach that emphasizes behavior modification to get a high return on investment in cybersecurity awareness. 展开更多
关键词 Downstream Cyberattack Cyber Security Mitigate Decision-Makers Proac-tive Measure Critical Assets Behavior Modification
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How can the forest sector mitigate climate change in a changing climate? Case studies of boreal and northern temperate forests in eastern Canada 认领 引用 被引量：2
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作者 Lucas Moreau Evelyne Thiffault +2 位作者 Dominic Cyr Yan Boulanger Robert Beauregard 《Forest Ecosystems》 SCIE CSCD 2022年第2期267-287,共21页
Background:Forest based climate mitigation emerged as a key component of the Paris Agreement,and thus re-quires robust science to reduce uncertainties related to such strategies.The aim of this study was to assess and... Background:Forest based climate mitigation emerged as a key component of the Paris Agreement,and thus re-quires robust science to reduce uncertainties related to such strategies.The aim of this study was to assess and compare the cumulative effects on carbon dynamics of forest management and climate change on boreal and northern temperate forest sector in eastern Canada for the 2020–2100 period.Methods:We used the spatially explicit forest landscape model LANDIS-II and its extension Forest Carbon Suc-cession,in conjunction with the Carbon Budget Model for Harvested Wood Products framework.We simulated the dynamics of forest composition and carbon flows from forest ecosystems to wood products and their substitution effect on markets under increasing climate forcing,according to a tonne-year approach.Simulations were con-ducted for a series of forest management scenarios based on realistic practices principally by clearcut in the boreal territory and continuous-cover forestry in the northern temperate one.These scenarios included:i)a business-as-usual scenario(BaU),representing the current management strategy,ii)increased harvesting by 6.3%to 13.9%,iii)increased conservation(i.e.reduced harvesting by 11.1%to 49.8%),iiii)and a scenario representing the natural evolution of the forest landscape(i.e.without any management activity).Results:Our study revealed that increasing harvesting levels had contrasting effects on the mitigation potential in northern temperate(enhance net sequestration)and boreal forest sector(enhance net emissions)in comparison to the BaU from 2040 onwards,regardless of the future climate.Carbon storage in wood products and the substi-tution effect were not sufficient to offset carbon emissions from ecosystems.Moreover,climate change had a strong impact on the capacity of both landscapes to act as carbon sinks.Northern temperate landscapes became a net source of carbon over time due to their greater vulnerability to climate change than boreal landscapes.Conclusions:Our study highlights the need to consider the initial landscape characteristics in simulations to maximize the mitigation potential of alternative forest management strategies.The optimal management solution can be very different according to the characteristics of forest ecosystems.This opens the possibility of optimizing management for specific forest stands,with the objective of maximizing the mitigation potential of a given landscape. 展开更多
关键词 Climate change Carbon Forest sector Forest management Boreal landscapes Northern temperate landscape Mitigation potential
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An Innovative Approach to Mitigate Vehicular Emission through Roadside Greeneries: A Case Study on Arterial Roads of Dhaka City 认领 引用 被引量：1
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作者 Meher Nigar Neema Jinat Jahan 《Journal of Data Analysis and Information Processing》 2014年第1期32-39,共8页
With the surge of human population, the need for transportation of goods and people also concomitantly increases, resulting in urban air pollution through emission from motorized traffic especially in developing count... With the surge of human population, the need for transportation of goods and people also concomitantly increases, resulting in urban air pollution through emission from motorized traffic especially in developing countries. The extent of environmental pollution in an urban setting is significantly influenced by the pollutants of vehicular fuel combustion. Many effective measures are required in cities to sequester carbon thereby helping to reduce automobile pollution. Roadside greeneries can serve as ecological elements which reduce the concentration of pollutants from vehicular emissions by their direct involvement in absorbing vehicular emitted carbon. In this context, in this study an attempt has been taken to assess contribution of roadside greeneries in absorbing vehicular carbon dioxide emission. A case study has been conducted on arterial roads of mega city Dhaka to quantify the vehicular carbon emission and correlate it with roadside trees to absorb the emitted carbon dioxide. It is noted that in Dhaka city, carbon dioxide is accounted for more than ninety percent of air pollution. To achieve our goals, two busiest arterial roads (namely Mirpur Road and Rokeya Shoroni Road) were taken into account to quantify vehicular carbon emission as well as assess carbon absorption by roadside greeneries. Carbon absorption by different sizes of trees has been quantified using the amount of woody biomass. In addition, absorption by grass-shrubs-herbs has been quantified by the area they cover. The results thus obtained show that indeed the road with more side greeneries absorbs more vehicular emitted carbon dioxide. It is therefore evident that plantation of more roadside trees is an effective measure of reducing air pollution and consequently turning a city to become healthier and more suitable for living. 展开更多
关键词 Vehicular Emission Roadside Greeneries Carbon Dioxide Emission Mitigation Healthy and Livable City
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Designing water spray systems to mitigate particulate matter pollution in an urban area 认领 引用
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作者 Chichuan Qin Xuelin Zhang +4 位作者 A.U.Weerasuriya Kenny C.S.Kwok Kelvin T.F.Chan Xiuzhi Chen Naiming Yuan 《Building Simulation》 SCIE EI CSCD 2026年第2期383-405,共23页
Water spray systems can mitigate particulate matter(PM)pollution by spraying water droplets to capture PM in the air.This study evaluates the PM removal using water spray systems in an urban site in Tsuen Wan,Hong Kon... Water spray systems can mitigate particulate matter(PM)pollution by spraying water droplets to capture PM in the air.This study evaluates the PM removal using water spray systems in an urban site in Tsuen Wan,Hong Kong,through computational fluid dynamics(CFD)simulations.A droplet capturing model considering the relative motion of droplet and PM was integrated into the CFD simulations to model the mechanism of the droplet in removing PM in a realistic urban area.CFD simulations evaluated three design parameters:installation location,spray pressure,and water flow rate.The results show that installing the water spray system at the road center is the most efficient and quickest way to remove PM in the urban site.However,increasing spray pressure has limited improvements in PM removal efficiency because the background wind speeds deter the droplet movements.Instead,increasing the water flow rate significantly increases the droplet concentration in the air,thereby reducing personal intake of PM by pedestrians up to 16.14%.In addition,this study revealed that CFD simulations that omit the droplets'capturing effect can result in 7.88%-15.44%underestimation of PM removal by water spray systems.Finally,this study recommends designing water spray systems with high flow rates in road centers and evaluating their performance in removing PM by using CFD simulations with the droplets'capturing effect to mitigate PM pollution in urban areas. 展开更多
关键词 water spray systems computational fluid dynamics simulation PM pollution mitigation capturing effect urban area
Utilizing network optimization to mitigate rising greenspace exposure inequalities in Chinese cities from 2000 to 2050 认领 引用
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作者 Rundong Feng Bin Chen +3 位作者 Shenghe Liu Fuyuan Wang Kaiyong Wang Bojie Fu 《Environmental Science and Ecotechnology》 SCIE CAS CSCD 2025年第6期170-180,共11页
Urban greenspaces enhance human well-being and promote sustainable development in rapidly urbanizing regions by delivering vital ecosystem services,including cooling,air purification,and recreation.In China,where citi... Urban greenspaces enhance human well-being and promote sustainable development in rapidly urbanizing regions by delivering vital ecosystem services,including cooling,air purification,and recreation.In China,where cities accommodate a large share of the population amid persistent environmental pressures,disparities in greenspace exposure pose a major obstacle to equitable access;these disparities arise from geographic,climatic,socioeconomic,and landscape factors.Although awareness of such inequalities is growing,their long-term trajectories,demographic and city-scale patterns,and viable spatial optimization approaches remain largely unexplored.Here we show that greenspace exposure inequality across 246 Chinese cities increased by 25%from 2000 to 2020 and is projected to rise further by 12.2-15.7%by 2050 under middle-of-the-road and fossil-fueled development scenarios,disproportionately affecting older,less-educated women and megacity residents.Geodetector and random forest analyses reveal that this rise results from interactions among greenspace coverage,population density,and patch connectivity,which explain 83.9%of the inequality.A network-based optimization approach that improves patch connectivity—without expanding total greenspace—can reduce disparities by 10.3-20.8%,with greater efficacy in high-inequality cities and among vulnerable populations.Our results highlight how precise landscape interventions can advance social equity in greenspace access,supporting Sustainable Development Goal 11 for inclusive,resilient urban environments. 展开更多
关键词 Greenspace exposure Multi-scenario projections Structural differences Mitigate strategy Network optimization
Rare earth engineering to mitigate corrosion challenges in seawater electrolysis 认领 引用 被引量：1
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作者 Qingxiu Duan Chao Luo +1 位作者 Mo Zhang Yangming Lin 《Frontiers in Energy》 SCIE EI CAS CSCD 2025年第5期553-555,共3页
The use of renewable energy for hydrogen production through water electrolysis is a critical pathway for green hydrogen generation.Compared to pure water electrolysis,direct electrolysis of seawater offers several adv... The use of renewable energy for hydrogen production through water electrolysis is a critical pathway for green hydrogen generation.Compared to pure water electrolysis,direct electrolysis of seawater offers several advantages,such as raw material availability and application diversity.However,the complex composition of seawater presents significant technical challenges,particularly the competitive chloride oxidation reaction(ClOR)at the anode,which leads to equipment corrosion[1]. 展开更多
关键词 rare earth engineering corrosion mitigation hydrogen production seawater electrolysis water electrolysis competitive chloride oxidation reaction clor renewable energy water electrolysisdirect electrolysis
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Catching an optical photograph via a focus-tunable real-time imaging system 认领 引用
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作者 Jianguo Xi Zuqing Yuan Qunwen Leng 《Science China Materials》 SCIE EI CAS CSCD 2026年第8期5210-5211,共2页
Visual systems are the primary interface for humans to perceive the external environment.Mimicking the human eye,which integrates adjustable lenses with a curved retina,bio-inspired curved image sensors effectively mi... Visual systems are the primary interface for humans to perceive the external environment.Mimicking the human eye,which integrates adjustable lenses with a curved retina,bio-inspired curved image sensors effectively mitigate field curvature and vignetting.To realize focus-tunable imaging,sensors must possess dynamic curvature while maintaining high sensitivity and mechanical stability[1].However,transitioning from rigid architectures to flexible devices often results in poor surface conformity through simple bending[2,3]. 展开更多
关键词 visual systems optical photograph focus tunable imaging mitigate field curvature vignettingto real time imaging system adjustable lenses surface conformity dynamic curvature
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Towards robust laser beam propagation in atmospheric turbulence 认领 引用
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作者 BOYU ZHANG CHANGMIN KIM +4 位作者 WENZHE LI JOSE CHIRINOS XIANGLEI MAO RICHARD HARRISON VASSILIA ZORBA 《Photonics Research》 SCIE EI CAS CSCD 2026年第7期3245-3267,共23页
High-fidelity optical propagation through the atmosphere is essential for free-space optical technologies,including laser-based remote sensing and optical communication.However,atmospheric turbulence severely distorts... High-fidelity optical propagation through the atmosphere is essential for free-space optical technologies,including laser-based remote sensing and optical communication.However,atmospheric turbulence severely distorts beams and compromises system performance.In this work,we employ hypergeometric-Gaussian(HyGG)vortex beams as probes to characterize and mitigate atmospheric turbulence.Using over 250,000 experimental and simulated frames,we show that refining the power spectrum density(PSD)can reduce numerical prediction errors by up to 79.8%.Concurrently,experimental observations supported by numerical simulations demonstrate that HyGG beams exhibit superior turbulence resilience across multiple metrics compared to conventional Gaussian beams,particularly in their ability to withstand over 5 times stronger turbulence while maintaining similar intensity fluctuations.These dual investigations,on both turbulence mitigation and robust beam solutions,converge to form a unified strategy for enhancing free-space optical system performance.Collectively,our findings provide new insights into light-turbulence interactions and highlight the practical utility of vortex beams under atmospheric conditions. 展开更多
关键词 hypergeometric gaussian beams vortex beams refining power spectrum free space optical technologies numerical p characterize mitigate atmospheric turbulenceusing atmospheric turbulence optical propagation
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Underlying mechanisms of high carbon budget surplus in low-stubble rice ratooning in Southeast China 认领 引用 被引量：2
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作者 Qiaohong Fan Jingnan Zou +4 位作者 Zhimin Lin Gui Chen Wu You Kai Su Wenxiong Lin 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2026年第3期918-937,共20页
The rice ratooning system has attracted increasing attention in southern China due to its low carbon emissions and high yield potential.However,the net carbon budget and underlying mechanisms remain unclear.Three rice... The rice ratooning system has attracted increasing attention in southern China due to its low carbon emissions and high yield potential.However,the net carbon budget and underlying mechanisms remain unclear.Three rice cropping systems were established in this trial experiment conducted from 2021 to 2022 in Fuzhou(25°05'N,119°13'E),Southeast China:ratooning rice(RR:MC+RSR)pattern for rice ratooning,single-cropping rice(LR1),and double-cropping rice(DC:ER+LR2).The closed static dark box gas collection,dry matter determination,life cycle assessment(LCA)etc.approaches were utilized to investigate the mechanism of“high carbon fixation–low emissions”mechanism in RR.A comprehensive assessment was conducted across multiple dimensions,including crop yield,greenhouse gas(GHG)emissions,carbon and nitrogen footprints,resource use efficiency,carbon sequestration capacity,and carbon budget balance.Results showed that the average daily yield of ratoon season rice(RSR)across RR treatments from 2021 to 2022 was 28.21–47.40%higher than that of the main crop(MC)and LR1,and the average daily yield of RR was 13.50–27.76%higher than DC.This yield advantage was attributed to a 32.32–39.26%increase in the allocation of13C-labeled photosynthetic products(including non-structural carbohydrates,NSCs)to panicle organs,and a 21.77–43.51%reduction in allocation to underground roots and soil.Furthermore,the average daily global warming potential(GWP)was 16.44 kg CO2-eq ha–1for RR,24.99 kg CO2-eq ha–1for LR1,and 21.32 kg CO2-eq ha–1for DC.Specifically,the average daily GWP of ratoon rice was 34.21%lower than that of LR1 and 22.90%lower than double-cropping rice.Similarly,the average daily greenhouse gas intensity(GHGI)of ratoon rice was 62.28%lower than LR1 and 28.96%lower than double-cropping rice.In terms of carbon and nitrogen footprints,the ratoon rice system exhibited average daily values of 34.54 kg CO2-eq ha–1and 0.47 kg N ha–1,respectively.In comparison,LR1 had values of 45.63 kg CO2-eq ha–1and 0.49 kg N ha–1,while double-cropping rice showed 43.38 kg CO2-eq ha–1and 0.53 kg N ha–1.These values represent reductions of 24.30%in carbon footprint and4.28%in nitrogen footprint relative to LR1,and 20.38 and 11.45%relative to double-cropping rice,respectively.Moreover,the average annual carbon budget surplus across systems was 22,380.01 kg CO2-eq ha–1for ratoon rice(MC+RSR),11,228.54 kg CO2-eq ha–1for LR1,and 23,772.15 kg CO2-eq ha–1for DC.Consequently,the resource utilization efficiency of the RR was 24.42 and 47.50%higher than that of single-cropping and double-cropping systems,respectively.Average daily economic returns also increased by 32.71 and 80.75%,respectively.These findings provide a robust theoretical foundation and practical guidance for advancing agricultural carbon neutrality technologies and ensuring food security. 展开更多
关键词 carbon budget balance carbon fixation and emission mitigation carbon and nitrogen footprints ratooning rice single cropping rice double cropping rice
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Nonlinear environmental impacts of digital transformation in China’s mega-urban agglomerations 认领 引用 被引量：1
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作者 Zehui Chen Chuanglin Fang +1 位作者 Zhitao Liu Lingyu Meng 《Geography and Sustainability》 CSCD 2026年第2期59-73,共15页
Amidst rapid digitalization and pressing environmental challenges,understanding the environmental implications of digital transformation is crucial for sustainable urban development.Yet,the complex,potentially nonline... Amidst rapid digitalization and pressing environmental challenges,understanding the environmental implications of digital transformation is crucial for sustainable urban development.Yet,the complex,potentially nonlinear digitalization-environment relationships remain underexplored.This study has two objectives:first,to quantify the nonlinear causal impacts of digital transformation on pollution mitigation and carbon reduction;and second,to unravel the mediating pathways that drive these outcomes.We employ Double Machine Learning(DML)on panel data from 2013 to 2022 across China’s four mega-urban agglomerations to identify the nonlinear environ mental impacts of digital transformation.Mediation analysis is then used to examine the technology,structure,governance,and scale pathways.Despite overall progress in both digital transformation and environmental per formance,significant regional variations persist.Our DML analysis reveals distinct nonlinearities:an S-shaped relationship between digital transformation and pollution mitigation,and a more complex N-shaped curve for the digital transformation-carbon reduction nexus.Mediation analysis further reveals complex mechanism:while the structure path consistently promotes environmental benefits,technology and scale factors show negative effects,and governance impacts diverge,promoting pollution mitigation but hindering carbon reduction.Trans lating digital transformation into environmental benefits necessitates a multi-pronged strategy.Key imperatives include prioritizing green technological innovation over sheer digital expansion to mitigate adverse scale effects,and restructuring energy systems towards renewable sources.Furthermore,digital governance must be wielded judiciously,with accountability to enhance specific environmental goals.This research reveals the intricate and context-dependent nature of digital transformation’s environmental effects,providing data-driven insights for regional policies aiming to leveraging digitalization for environmental sustainability,particularly in urban con texts. 展开更多
关键词 Digital transformation Environmental sustainability Pollution mitigation Carbon reduction Double machine learning
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