Hygroelectricity generators(HEGs)utilize the latent heat stored in environmental moisture for electricity generation,but nevertheless are showing relatively low power densities due to their weak energy harvesting capa...Hygroelectricity generators(HEGs)utilize the latent heat stored in environmental moisture for electricity generation,but nevertheless are showing relatively low power densities due to their weak energy harvesting capacities.Inspired by epiphytes that absorb ambient moisture and concurrently capture sunlight for dynamic photosynthesis,we propose herein a scenario of all-biobased hydrovoltaic-photovoltaic electricity generators(HPEGs)that integrate photosystem II(PSII)with Geobacter sulfurreducens(G.s)for simultaneous energy harvesting from both moisture and sunlight.This proof of concept illustrates that the all-biobased HPEG generates steady hygroelectricity induced by moisture absorption and meanwhile creates a photovoltaic electric field which further strengthens electricity generation under sunlight.Under environmental conditions,the synergic hydrovoltaic-photovoltaic effect in HPEGs has resulted in a continuous output power with a high density of 1.24 W/m^(2),surpassing ali HEGs reported hitherto.This work thus provides a feasible strategy for boosting electricity generation via simultaneous energy harvesting from ambient moisture and sunlight.展开更多
Granular acid-activated neutralized red mud(AaN-RM)has been successfully prepared with good chemical stability and physical strength.However,its potential for industrial application remains unknown.Therefore,the perfo...Granular acid-activated neutralized red mud(AaN-RM)has been successfully prepared with good chemical stability and physical strength.However,its potential for industrial application remains unknown.Therefore,the performance of granular AaN-RM for phosphate recovery in a fixed-bed column was investigated.The results demonstrated that the phosphate adsorption performance of granular AaN-RM in a fixed-bed column was affected by various operational parameters,such as the bed depth,flow rate,initial solution pH and initial phosphate concentration.With the optimal empty-bed contact time(EBCT)of 24.27 min,the number of processed bed volumes and the phosphate adsorption capacity reached 496.95 and 84.80 mg/g,respectively.Then,the saturated fixed-bed column could be effectively regenerated with a0.5 mol/L HCl solution.The desorption efficiency remained as high as 83.45%with a low weight loss of 3.57%in the fifth regeneration cycle.In addition,breakthrough curve modelling showed that a 5-9-1 feed-forward artificial neural network(ANN)could be effectively applied for the optimization of the fixed-bed adsorption system;the coefficient of determination(R^2)and the root mean square error(RMSE)evaluated on the validation-testing data were 0.9987 and 0.0183,respectively.Therefore,granular AaN-RM fixed-bed adsorption exhibits promising potential for phosphate removal and recovery from polluted water.展开更多
High-frequency oscillations(HFOs)in the electroencephalography(EEG)have been extensively investigated as a potential biomarker of epileptogenic zones.The understanding of the role of HFOs in epilepsy has been advanced...High-frequency oscillations(HFOs)in the electroencephalography(EEG)have been extensively investigated as a potential biomarker of epileptogenic zones.The understanding of the role of HFOs in epilepsy has been advanced considerably over the past decade,and the use of scalp EEG facilitates recordings of HFOs.HFOs were initially applied in large scale in epilepsy surgery and are now being utilized in other applications.In this review,we summarize applications of HFOs in 3 subtopics:(1)HFOs as biomarkers to evaluate epilepsy treatment outcome;(2)HFOs as biomarkers to measure seizure propensity;(3)HFOs as biomarkers to reflect the pathological severity of epilepsy.Nevertheless,knowledge regarding the above clinical applications of HFOs remains limited at present.Further validation through prospective studies is required for its reliable application in the clinical management of individual epileptic patients.展开更多
基金supported by the National Science Fund for Distinguished Young Scholars(41925028)the Project funded by China Postdoctoral Science Foundation(2022M710698)+1 种基金the Natural Science Foundation of Fujian Province,China(2022J01154)the Science and Technology Innovation Special Fund Project of Fujian Agriculture and Forestry University(CXZX2020101A).
文摘Hygroelectricity generators(HEGs)utilize the latent heat stored in environmental moisture for electricity generation,but nevertheless are showing relatively low power densities due to their weak energy harvesting capacities.Inspired by epiphytes that absorb ambient moisture and concurrently capture sunlight for dynamic photosynthesis,we propose herein a scenario of all-biobased hydrovoltaic-photovoltaic electricity generators(HPEGs)that integrate photosystem II(PSII)with Geobacter sulfurreducens(G.s)for simultaneous energy harvesting from both moisture and sunlight.This proof of concept illustrates that the all-biobased HPEG generates steady hygroelectricity induced by moisture absorption and meanwhile creates a photovoltaic electric field which further strengthens electricity generation under sunlight.Under environmental conditions,the synergic hydrovoltaic-photovoltaic effect in HPEGs has resulted in a continuous output power with a high density of 1.24 W/m^(2),surpassing ali HEGs reported hitherto.This work thus provides a feasible strategy for boosting electricity generation via simultaneous energy harvesting from ambient moisture and sunlight.
基金supported by the National Natural Science Foundation of China,China(Nos.51608121,41977281)the Project of the Fujian Provincial Department of Science and Technology of China,China(No.2018J01748)+1 种基金the Fujian Agriculture and Forestry University Program for Distinguished Young Scholars,China(No.XJQ2017003)the Fujian Province’s Training Program of Innovation and Entrepreneurship for Undergraduate,China(No.201910389077)
文摘Granular acid-activated neutralized red mud(AaN-RM)has been successfully prepared with good chemical stability and physical strength.However,its potential for industrial application remains unknown.Therefore,the performance of granular AaN-RM for phosphate recovery in a fixed-bed column was investigated.The results demonstrated that the phosphate adsorption performance of granular AaN-RM in a fixed-bed column was affected by various operational parameters,such as the bed depth,flow rate,initial solution pH and initial phosphate concentration.With the optimal empty-bed contact time(EBCT)of 24.27 min,the number of processed bed volumes and the phosphate adsorption capacity reached 496.95 and 84.80 mg/g,respectively.Then,the saturated fixed-bed column could be effectively regenerated with a0.5 mol/L HCl solution.The desorption efficiency remained as high as 83.45%with a low weight loss of 3.57%in the fifth regeneration cycle.In addition,breakthrough curve modelling showed that a 5-9-1 feed-forward artificial neural network(ANN)could be effectively applied for the optimization of the fixed-bed adsorption system;the coefficient of determination(R^2)and the root mean square error(RMSE)evaluated on the validation-testing data were 0.9987 and 0.0183,respectively.Therefore,granular AaN-RM fixed-bed adsorption exhibits promising potential for phosphate removal and recovery from polluted water.
基金supported by grants from the National Key R&D Program of China(2017YFC1307500 to QW)the Capital Health Research and Development of Special Program(2016-1-2011 and 2020-1-2013 to QW)+2 种基金the Beijing-Tianjin-Hebei Cooperative Basic Research Program(H2018206435 to QW)the Beijing Natural Science Foundation(Z200024 to YGW and QW)the National Natural Science Foundation of China(81801280 to GR,81601126 to JR).
文摘High-frequency oscillations(HFOs)in the electroencephalography(EEG)have been extensively investigated as a potential biomarker of epileptogenic zones.The understanding of the role of HFOs in epilepsy has been advanced considerably over the past decade,and the use of scalp EEG facilitates recordings of HFOs.HFOs were initially applied in large scale in epilepsy surgery and are now being utilized in other applications.In this review,we summarize applications of HFOs in 3 subtopics:(1)HFOs as biomarkers to evaluate epilepsy treatment outcome;(2)HFOs as biomarkers to measure seizure propensity;(3)HFOs as biomarkers to reflect the pathological severity of epilepsy.Nevertheless,knowledge regarding the above clinical applications of HFOs remains limited at present.Further validation through prospective studies is required for its reliable application in the clinical management of individual epileptic patients.
