Soil microbial fuel cells(MFCs),a novel ecosystem technology,have recently been intensively studied for antibiotic-polluted soils.However,actual agricultural soils are always contaminated by mixed pollutants,especiall...Soil microbial fuel cells(MFCs),a novel ecosystem technology,have recently been intensively studied for antibiotic-polluted soils.However,actual agricultural soils are always contaminated by mixed pollutants,especially plasticizers from extensively used agricultural plastic films.The aim of this study was to investigate the effects of di-2-ethylhexyl phthalate(DEHP),a representative plasticizer in soil,on the removal of sulfadiazine(SDZ),a frequently detected antibiotic in natural environments,and antibiotic resistance genes(ARGs)and microbial community in soil MFCs.Soil MFCs maintained a good antibiotic removal ability even under the influence of residual DEHP and achieved a higher removal performance at higher DEHP concentrations due to enhanced power generation.Specifically,a higher DEHP concentration had a favorable effect on antibiotic removal in soil MFCs,with the SDZ concentration decreased in both the upper and lower layers(from 4.867±0.221 to 0.268±0.021 and 0.293±0.047 mg kg^(-1),respectively)of polluted soils.Moreover,a high DEHP concentration significantly promoted the abundance of bacteria associated with electricity generation compared with a lower DEHP concentration,resulting in the promotion of extracellular electron transfer and enhancing SDZ degradation.The increased ARG abundance may be caused by the enrichment of ARG potential hosts brought about by high DEHP concentration,likely due to the increased conjugative transfer frequencies of plasmid RP4 by decreasing cell membrane permeability and increasing reactive oxygen species content.The results revealed the ecological risk of residual DEHP in soil that promotes ARG transmission in soil MFCs,although it has the potential to reduce SDZ toxicity through horizontal gene transfer.We also highlight concerns regarding the management of antibiotics and plasticizers in soil.The negative effects of plasticizers on antibiotic removal should be carefully evaluated when using soil MFCs for the in-situ remediation of antibiotic-contaminated soil.展开更多
The reform of Ideological and political courses in Colleges and universities is fast and steady,but a new outbreak has brought impact and challenge to the current teaching mode of Ideological and political courses.Und...The reform of Ideological and political courses in Colleges and universities is fast and steady,but a new outbreak has brought impact and challenge to the current teaching mode of Ideological and political courses.Under the call of"No classes without stopping teaching,No classes without stopping learning",colleges and universities rely on the existing information technology means to build online teaching platform,and ideological and political teachers actively carry out online teaching by using all kinds of modern technology.Under the guidance of national policies,school logistics support and the implementation of Ideological and political teachers,the teaching order of Ideological and political courses during the epidemic prevention and control period was ensured.Although there will inevitably be some problems in the teaching process,combined with the nature of the ideological and political textbooks and the progress and quality of online teaching during the epidemic prevention and control period,this paper reflects on the problems in the online education of Ideological and political courses,puts forward the corresponding solutions,and stands that the online education of Ideological and political courses in Colleges and universities can completely turn passive into active.Therefore,it is feasible to change the online teaching of Ideological and political course from"forced"to normalization.展开更多
The solar insecticidal lamp(SIL)is an innovative green control device.Nevertheless,a major challenge is often encountered when carrying out insecticidal work is low energy utilization efficiency.The substantial energy...The solar insecticidal lamp(SIL)is an innovative green control device.Nevertheless,a major challenge is often encountered when carrying out insecticidal work is low energy utilization efficiency.The substantial energy consumption required to turn on the SIL,coupled with the extension of insecticidal working time during the low pest activity periods,can result in low energy efficiency.Especially when the energy storage level is below 50%,the inefficient use of energy significantly reduces the effectiveness of pest control.Consequently,an ineffective on/off scheme for these lamps may lead to suboptimal energy utilization.In this paper,we present the solar insecticidal lamp intelligent energy management scheme(SIL-IEMS)to address the challenge of inefficient energy utilization in the solar insecticidal lamp internet of things(SIL-IoT).SIL-IEMS primarily utilizes genetic algorithm(GA)and greedy algorithms to optimize insecticidal working time by considering constraints such as residual energy and the number of trap pests.Comparing SIL-IEMS to the traditional remote switching method(TRSM)and the solar insecticidal lamp genetic algorithm(SILGA),our simulation results showcase its superior energy efficiency and pest control effectiveness.Particularly noteworthy is the SILIEMS's 17.6%increase in insecticidal efficiency compared to TRSM and 6%improvement over SILGA when the SIL begins with a remaining energy level of 15%.展开更多
To the Editor:Atrial fibrillation(AF)is a well-recognized cause of left atrial(LA)structural remodeling.[1]LA sphericity(LASP),a new shape-based remodeling parameter,is an independent predictor for AF ablation outcome...To the Editor:Atrial fibrillation(AF)is a well-recognized cause of left atrial(LA)structural remodeling.[1]LA sphericity(LASP),a new shape-based remodeling parameter,is an independent predictor for AF ablation outcome.[2,3]Improvement of LA structure was defined as LA reverse remodeling(RR).This study compared the impact of combined left atrial appendage(LAA)closure(LAAC)and catheter ablation(CA)of AF with a single procedure on LA volume(LAV)and LASP.展开更多
基金supported by the National Natural Science Foundation of China(Nos.42477014 and 52070101)Huixiang Wang would like to acknowledge the Postgraduate Research Practice Innovation Program of Jiangsu Province,China(No.181200003023218)。
文摘Soil microbial fuel cells(MFCs),a novel ecosystem technology,have recently been intensively studied for antibiotic-polluted soils.However,actual agricultural soils are always contaminated by mixed pollutants,especially plasticizers from extensively used agricultural plastic films.The aim of this study was to investigate the effects of di-2-ethylhexyl phthalate(DEHP),a representative plasticizer in soil,on the removal of sulfadiazine(SDZ),a frequently detected antibiotic in natural environments,and antibiotic resistance genes(ARGs)and microbial community in soil MFCs.Soil MFCs maintained a good antibiotic removal ability even under the influence of residual DEHP and achieved a higher removal performance at higher DEHP concentrations due to enhanced power generation.Specifically,a higher DEHP concentration had a favorable effect on antibiotic removal in soil MFCs,with the SDZ concentration decreased in both the upper and lower layers(from 4.867±0.221 to 0.268±0.021 and 0.293±0.047 mg kg^(-1),respectively)of polluted soils.Moreover,a high DEHP concentration significantly promoted the abundance of bacteria associated with electricity generation compared with a lower DEHP concentration,resulting in the promotion of extracellular electron transfer and enhancing SDZ degradation.The increased ARG abundance may be caused by the enrichment of ARG potential hosts brought about by high DEHP concentration,likely due to the increased conjugative transfer frequencies of plasmid RP4 by decreasing cell membrane permeability and increasing reactive oxygen species content.The results revealed the ecological risk of residual DEHP in soil that promotes ARG transmission in soil MFCs,although it has the potential to reduce SDZ toxicity through horizontal gene transfer.We also highlight concerns regarding the management of antibiotics and plasticizers in soil.The negative effects of plasticizers on antibiotic removal should be carefully evaluated when using soil MFCs for the in-situ remediation of antibiotic-contaminated soil.
文摘The reform of Ideological and political courses in Colleges and universities is fast and steady,but a new outbreak has brought impact and challenge to the current teaching mode of Ideological and political courses.Under the call of"No classes without stopping teaching,No classes without stopping learning",colleges and universities rely on the existing information technology means to build online teaching platform,and ideological and political teachers actively carry out online teaching by using all kinds of modern technology.Under the guidance of national policies,school logistics support and the implementation of Ideological and political teachers,the teaching order of Ideological and political courses during the epidemic prevention and control period was ensured.Although there will inevitably be some problems in the teaching process,combined with the nature of the ideological and political textbooks and the progress and quality of online teaching during the epidemic prevention and control period,this paper reflects on the problems in the online education of Ideological and political courses,puts forward the corresponding solutions,and stands that the online education of Ideological and political courses in Colleges and universities can completely turn passive into active.Therefore,it is feasible to change the online teaching of Ideological and political course from"forced"to normalization.
基金supported in part by the National Natural Science Foundation of China(62072248).
文摘The solar insecticidal lamp(SIL)is an innovative green control device.Nevertheless,a major challenge is often encountered when carrying out insecticidal work is low energy utilization efficiency.The substantial energy consumption required to turn on the SIL,coupled with the extension of insecticidal working time during the low pest activity periods,can result in low energy efficiency.Especially when the energy storage level is below 50%,the inefficient use of energy significantly reduces the effectiveness of pest control.Consequently,an ineffective on/off scheme for these lamps may lead to suboptimal energy utilization.In this paper,we present the solar insecticidal lamp intelligent energy management scheme(SIL-IEMS)to address the challenge of inefficient energy utilization in the solar insecticidal lamp internet of things(SIL-IoT).SIL-IEMS primarily utilizes genetic algorithm(GA)and greedy algorithms to optimize insecticidal working time by considering constraints such as residual energy and the number of trap pests.Comparing SIL-IEMS to the traditional remote switching method(TRSM)and the solar insecticidal lamp genetic algorithm(SILGA),our simulation results showcase its superior energy efficiency and pest control effectiveness.Particularly noteworthy is the SILIEMS's 17.6%increase in insecticidal efficiency compared to TRSM and 6%improvement over SILGA when the SIL begins with a remaining energy level of 15%.
基金supported by grants from the State Key Program of National Natural Science Foundation of China(No.82130009)the National Science Foundation of China(No.82070515)the Clinical Research Plan(No.SHDC2020CR2026B)
文摘To the Editor:Atrial fibrillation(AF)is a well-recognized cause of left atrial(LA)structural remodeling.[1]LA sphericity(LASP),a new shape-based remodeling parameter,is an independent predictor for AF ablation outcome.[2,3]Improvement of LA structure was defined as LA reverse remodeling(RR).This study compared the impact of combined left atrial appendage(LAA)closure(LAAC)and catheter ablation(CA)of AF with a single procedure on LA volume(LAV)and LASP.
