This study presents an experimental investigation of the coupled caloric effect driven by dual-fields in metamagnetic alloy ErCo_(2) with strong magneto-structural coupling.Magnetic measurements were conducted under d...This study presents an experimental investigation of the coupled caloric effect driven by dual-fields in metamagnetic alloy ErCo_(2) with strong magneto-structural coupling.Magnetic measurements were conducted under different pressures,revealing that the application of hydrostatic pressure stabilizes a small volume of paramagnetism(PM) phase,resulting in a shift of the phase transition temperature towards the low-temperature region.This shift is opposite to the temperature associated with the magnetic field-driven phase transition.As pressure increases,the metamagnetic transition in ErCo_(2) is suppressed,and the hysteresis disappears.However,the produced cross-coupling caloric effect compensates the decrease in entropy change caused by the disappearance of the metamagnetic transition.As a result,a reversible giant magnetocaloric effect of 46.2 J/(kg·K) without hysteresis is achieved at a pressure of 0.910 GPa.Moreover,we propose that the temperature span of ErCo_(2) can be significantly widened by optimizing the thermodynamic pathway of the magnetic and pressure fields,overcoming the defect of a narrow temperature range.展开更多
Spent cathode carbon(SCC)from aluminum electrolysis is a potential graphite resource.However,full use of the SCC remains a challenge,since it contains many hazardous substances(e.g.,fluoride salts,cyanides),encapsulat...Spent cathode carbon(SCC)from aluminum electrolysis is a potential graphite resource.However,full use of the SCC remains a challenge,since it contains many hazardous substances(e.g.,fluoride salts,cyanides),encapsulated within the thick carbon layers and thus posing serious environmental concerns.This work presents a chemical oxidative exfoliation route to achieve the recycling of SCC and the decontaminated SCC with high-valued graphene oxide(GO)-like carbon structures(SCC-GO)is applied as an excellent adsorbent for organic pollutants.Specifically,after the oxidative exfoliation,the embedded hazardous constituents are fully exposed,facilitating their subsequent removal by aqueous leaching.Moreover,benefiting from the enhanced specific surface areas along with abundant O-containing functional groups,the as-produced SCC-GO,shows an adsorption capacity as high as 347 mg·g^(-1)when considering methylene blue as a pollutant model,which exceeds most of the recently reported carbon-based adsorbents.Our study provides a feasible solution for the efficient recycling of hazardous carbonaceous wastes.展开更多
The efficient use of water and nitrogen （N） to promote growth and increase yield of fruit trees and crops is well studied.However,little is known about their effects on woody plants growing in arid and semiarid area...The efficient use of water and nitrogen （N） to promote growth and increase yield of fruit trees and crops is well studied.However,little is known about their effects on woody plants growing in arid and semiarid areas with limited water and N availability.To examine the effects of water and N supply on early growth and water use efficiency （WUE） of trees on dry soils,one-year-old seedlings of Robinia pseudoacacia were exposed to three soil water contents （non-limiting,medium drought,and severe drought） as well as to low and high N levels,for four months.Photosynthetic parameters,leaf instantaneous WUE （WUEi） and whole tree WUE （WUEb） were determined.Results showed that,independent of N levels,increasing soil water content enhanced the tree transpiration rate （Tr）,stomatal conductance （Gs）,intercellular CO2 concentration （Ci）,maximum net assimilation rate （Amax）,apparent quantum yield （AQY）,the range of photosynthetically active radiation （PAR） due to both reduced light compensation point and enhanced light saturation point,and dark respiration rate （Rd）,resulting in a higher net photosynthetic rate （Pn） and a significantly increased whole tree biomass.Consequently,WUEi and WUEb were reduced at low N,whereas WUE i was enhanced at high N levels.Irrespective of soil water availability,N supply enhanced Pn in association with an increase of Gs and Ci and a decrease of the stomatal limitation value （Ls）,while Tr remained unchanged.Biomass and WUEi increased under non-limiting water conditions and medium drought,as well as WUEb under all water conditions;but under severe drought,WUEi and biomass were not affected by N application.In conclusion,increasing soil water availability improves photosynthetic capacity and biomass accumulation under low and high N levels,but its effects on WUE vary with soil N levels.N supply increased Pn and WUE,but under severe drought,N supply did not enhance WUEi and biomass.展开更多
Knee instability as a symptom of ligament injury usually only receives attention when it causes pain or impacts patients’mobility in China.In this study both the physical and psychosocial impact of an innovative appr...Knee instability as a symptom of ligament injury usually only receives attention when it causes pain or impacts patients’mobility in China.In this study both the physical and psychosocial impact of an innovative approach to treatment,Half-cut Wood Training,was examined.Twenty individuals with knee instability who received Halfcut Wood Training(Intervention group)and twenty two individuals with knee instability who did not receive Half-cut Wood Training(as Control group)participated in the study.The electric WIFI based HBF-306 was used to collect the anthropometry and biomedical data.Symptom severity was assessed by a doctor and through response to a specific question.Half-cut Wood Training was used as the intervention for the knee instability patients,and the effects among pre-intervention,post-intervention and control group on self-esteem,self-efficacy,quality of life and reductions in knee instability were assessed and compared to patients in the control group.The Half-cut Wood Training has significantly improved the physical health,self-esteem,self-efficacy,legs and feet functioning of patients in the intervention group compared with control group.Moreover,the Symptom were decreased(F=15.47,P<0.001),and the doctor reported knee function was improved(F=36.20,P<0.001).The subgroups including number of sessions of attending the Half-cut Wood Training had effects on the reduction of symptoms and duration of training time more than one month has effect on the improvement of physical health.Half-cut Wood Training provides beneficial means of improving knee function,self-esteem,self-efficacy,and physical health of the quality of life of patients with the knee instability.展开更多
Peach aphid is a common pest and hard to detect.This study employs hyperspectral imaging technology to identify early damage in green cabbage caused by peach aphid.Through principal component transformation and multip...Peach aphid is a common pest and hard to detect.This study employs hyperspectral imaging technology to identify early damage in green cabbage caused by peach aphid.Through principal component transformation and multiple linear regression analysis,the correlation relation between spectral characteristics and infestation stage is analyzed.Then,four characteristic wavelength selection methods are compared and optimal characteristic wavelengths subset is determined to be input for modelling.One linear algorithm and two nonlinear modelling algorithms are compared.Finally,support vector machine(SVM)model based on the characteristic wavelengths selected by multi-cluster feature selection(MCFS)acquires the highest identification accuracy,which is 98.97%.These results indicate that hyperspectral imaging technology have the ability to identify early peach aphid infestation stages on green cabbages.展开更多
Objective:To explore the correlations between five-pattern personality scores and autonomic nervous response indicators in Chinese female college students,to provide a foundation for further exploration of the modern ...Objective:To explore the correlations between five-pattern personality scores and autonomic nervous response indicators in Chinese female college students,to provide a foundation for further exploration of the modern physiological basis of these personality types.Methods:Subjects were asked to fill in 'The Five-Pattern Personality Inventory' (revised edition 2008).Taiyang,Shaoyang,yin-yang balance,Taiyin,and Shaoyin personalities were scored.The galvanic skin response and heart rate,and the low frequency (LF),high frequency (HF),and LF/HF ratio of heart rate variability were collected using a 16-channel physiological recorder (BIOPAC MP150).Relationship between the five-pattern personality scores and autonomic nervous response indicators was analyzed using bivariate correlation.Results:The five-pattern personality scores of the subjects were compared with national averages.The Taiyang and Shaoyang personality scores of the subjects were significantly lower than the overall national average,the national female average,and the national female average in the 18-29-year-old age group (all P <.05).The Taiyang personality score was negatively correlated with both the LF and the HF (P =.009 and P =.001,respectively),and the yin-yang balance personality score was significantly negatively correlated with the galvanic skin response (P =.026).Conclusion:There is a relationship between five-pattern personality scores and autonomic nervous response indicators in Chinese female college students.The higher the Taiyang personality score,the lower the sympathetic and vagus nerve excitability;the higher the yinyang balance personality score,the lower the sympathetic nerve excitability.展开更多
Objective:To explore the efficacy of auricular acupuncture combined with transcutaneous electrical nerve stimulation(TENS)and nonsteroidal anti-inflammatory drugs(NSAIDs)in alleviating postpartum uterine pain.Methods:...Objective:To explore the efficacy of auricular acupuncture combined with transcutaneous electrical nerve stimulation(TENS)and nonsteroidal anti-inflammatory drugs(NSAIDs)in alleviating postpartum uterine pain.Methods:A total of 501 postpartum women with uterine pain were randomly divided into an experimental group(n=250)and a control group(n=251).The control group received oral NSAIDs(such as ibuprofen sustained-release capsules,diclofenac sodium suppositories,etc.),while the experimental group received auricular acupuncture and TENS in addition to the NSAIDs.The clinical efficacy,pain intensity,and vaginal bleeding volume of the two groups were observed.Results:The total effective rate in the experimental group(93.20%)was significantly higher than that in the control group(73.20%)(P<0.001).The NRS scores in the experimental group were lower than those in the control group after the intervention,and the bleeding volume within 24 h and 48 h after the intervention was also less than that in the control group,with significant differences(all P<0.001).Conclusion:Auricular acupuncture combined with TENS and NSAIDs for the treatment of postpartum uterine pain is safe and effective,can significantly reduce pain and vaginal bleeding,and is worthy of clinical promotion.展开更多
Socialist core values are the concentrated expression and highly condensed values of the state,society,and individuals.They are also the embodiment of the values and spiritual consensus and pursuit in the life of the ...Socialist core values are the concentrated expression and highly condensed values of the state,society,and individuals.They are also the embodiment of the values and spiritual consensus and pursuit in the life of the state and society.This article analyzes and summarizes the research results on the identification of socialist core values in China in recent years,mainly sorting out aspects such as the significance of identification,the dialectical relationship between identification and practice,differences in identification levels among different groups,and paths to enhance identification.Finally,suggestions for further deepening future research are proposed.展开更多
Recent approaches to the internal quality inspection of apples with the application of hyperspectral imaging technology are highly cost-intensive because of labor involvement for the data collection on a fixed posture...Recent approaches to the internal quality inspection of apples with the application of hyperspectral imaging technology are highly cost-intensive because of labor involvement for the data collection on a fixed posture and manual selection of the region of interest(RoI).In addition,several studies have repeated the data acquisition for the same apple.Current methods cannot meet the automation requirements of the sorting line.Therefore,this study proposed a novel method for automatically selecting RoI in hyperspectral images of apples with random poses.Firstly,the preliminary RoI selection of apple hyperspectral image was carried out,followed by the performance of histogram statistics of each pixel with spectral intensity at 700 nm wavelength.The top 40%area of the spectral intensity was reserved to obtain the magnitude relationship of the spectral intensity of each pixel point and a morphological erosion operation.Original apple RoI was acquired and overexposed pixels were removed with spectral intensity greater than 3900(maximum 4095)in the reserved area at 700 nm.Secondly,the relationship between apple size and prediction accuracy was measured for the in-depth RoI analysis.A partial least square regression(PLSR)model was established between the average spectrum and apple sugar content of RoI with different sizes.Finally,the established model with the top 70%of the spectral intensity achieved the best prediction accuracy.Non-destructive estimation of apple sugar content was performed through hyperspectral imaging technology with reference to the proposed RoI selection method.A competitive adaptive reweighted sampling algorithm along the PLSR(CARS-PLSR)model was established after black-and-white correction and standard normal transformation(SNV)preprocessing and obtained the highest prediction accuracy.The determination coefficient of cross-validation(R_(cv))and root mean square error of cross-validation(RMSECV)were 0.9595 and 0.3203°Brix,respectively.The determination coefficient of prediction(R_(p))was 0.9308,and the root mean square error of prediction(RMSEP)was 0.4681°Brix.Results proved that the auto-selection of RoI is an efficient and accurate method,which can provide a foundation in practical application for online apple grading systems with hyperspectral imaging technology.展开更多
The rapid expansion of the fast fashion industry brings about environmental concerns such as dyestuffs-related water pollutions and waste textiles.Conventional wastewater-disposal strategies emphasize the optimization...The rapid expansion of the fast fashion industry brings about environmental concerns such as dyestuffs-related water pollutions and waste textiles.Conventional wastewater-disposal strategies emphasize the optimization of photocatalytic activity to improve pollutant degradation efficiency,while the absorptivity,recyclability and sustainability of photocatalysts are always ignored.The overproduced textiles are still in urgent of being recycled and reutilized in eco-friendly approaches.In this work,a scalable dyeing technology is employed to achieve green and sustainable reutilization of waste textiles.The functionalized TiO2/reduced graphene oxide wool fabrics show excellent sustainability,remarkable adsorbing capacity and enhanced photocatalytic performance.By taking advantage of these properties,we develop an integrated strategy of nighttime adsorption and day-time photodegradation which could significantly optimize the dyestuffs degradation efficiency.The concept of waste textiles reutilization and wastewater treatment in this work provides practical potential for efficient and sustainable environmental remediation.展开更多
While it is widely accepted that genetic diversity determines the potential of adaptation,the role that gene expression variation plays in adaptation remains poorly known.Here we show that gene expression diversity co...While it is widely accepted that genetic diversity determines the potential of adaptation,the role that gene expression variation plays in adaptation remains poorly known.Here we show that gene expression diversity could have played a positive role in the adaptation of Miscanthus lutarioriparius.RNA-seq was conducted for 80 individuals of the species,with half planted in the energy crop domestication site and the other half planted in the control site near native habitats.A leaf reference transcriptome consisting of 18,503 high-quality transcripts was obtained using a pipeline developed for de novo assembling with population RNA-seq data.The population structure and genetic diversity of M.lutarioriparius were estimated based on 30,609 genic single nucleotide polymorphisms.Population expression（Ep） and expression diversity（Ed）were defined to measure the average level and the magnitude of variation of a gene expression in the population,respectively.It was found that expression diversity increased while genetic Resediversity decreased after the species was transplanted from the native habitats to the harsh domestication site,especially for genes involved in abiotic stress resistance,histone methylation,and biomass synthesis under water limitation.The increased expression diversity could have enriched phenotypic variation directly subject to selections in the new environment.展开更多
Global warming and climate change caused by the emission of carbon dioxide(CO_(2))have induced unprecedented threats to the natural environment.Efficient utilization of CO_(2)is a highly desirable approach to neutrali...Global warming and climate change caused by the emission of carbon dioxide(CO_(2))have induced unprecedented threats to the natural environment.Efficient utilization of CO_(2)is a highly desirable approach to neutralizing CO_(2)emissions.Li-CO_(2)batteries can store electrochemical energy.They have received considerable attention due to their ability to“fix”and convert CO_(2).展开更多
基金supported by the National Key R&D Program of China (2021YFB3501202,2021YFB3501204,2019YFA0704900,2020YFA0711500,2023YFA1406003,2022YFB3505201)the National Natural Science Foundation of China (52088101,U23A20550,92263202,22361132534)the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB33030200)。
文摘This study presents an experimental investigation of the coupled caloric effect driven by dual-fields in metamagnetic alloy ErCo_(2) with strong magneto-structural coupling.Magnetic measurements were conducted under different pressures,revealing that the application of hydrostatic pressure stabilizes a small volume of paramagnetism(PM) phase,resulting in a shift of the phase transition temperature towards the low-temperature region.This shift is opposite to the temperature associated with the magnetic field-driven phase transition.As pressure increases,the metamagnetic transition in ErCo_(2) is suppressed,and the hysteresis disappears.However,the produced cross-coupling caloric effect compensates the decrease in entropy change caused by the disappearance of the metamagnetic transition.As a result,a reversible giant magnetocaloric effect of 46.2 J/(kg·K) without hysteresis is achieved at a pressure of 0.910 GPa.Moreover,we propose that the temperature span of ErCo_(2) can be significantly widened by optimizing the thermodynamic pathway of the magnetic and pressure fields,overcoming the defect of a narrow temperature range.
基金supported by the National Natural Science Foundation of China(22008221)Startup Research Fund of Zhengzhou University(32211716)+3 种基金Key Scientific Research Projects of Colleges and Universities in Henan Province(21A530005)Guangdong Basic and Applied Basic Research Foundation(2021A1515110789)Hunan Provincial Natural Science Foundation of China(2022JJ40431)Zhengzhou Collaborative Innovation Major Project。
文摘Spent cathode carbon(SCC)from aluminum electrolysis is a potential graphite resource.However,full use of the SCC remains a challenge,since it contains many hazardous substances(e.g.,fluoride salts,cyanides),encapsulated within the thick carbon layers and thus posing serious environmental concerns.This work presents a chemical oxidative exfoliation route to achieve the recycling of SCC and the decontaminated SCC with high-valued graphene oxide(GO)-like carbon structures(SCC-GO)is applied as an excellent adsorbent for organic pollutants.Specifically,after the oxidative exfoliation,the embedded hazardous constituents are fully exposed,facilitating their subsequent removal by aqueous leaching.Moreover,benefiting from the enhanced specific surface areas along with abundant O-containing functional groups,the as-produced SCC-GO,shows an adsorption capacity as high as 347 mg·g^(-1)when considering methylene blue as a pollutant model,which exceeds most of the recently reported carbon-based adsorbents.Our study provides a feasible solution for the efficient recycling of hazardous carbonaceous wastes.
基金supported by the National Natural Science Foundation of China(No.30972335)the International Science & Technology Cooperation Program of China(No.2010DFA34380)+1 种基金the International Cooperation Project(No.TS2010XBNL063)the "111" Project of the Education Ministry of China(No.B12007)
文摘The efficient use of water and nitrogen （N） to promote growth and increase yield of fruit trees and crops is well studied.However,little is known about their effects on woody plants growing in arid and semiarid areas with limited water and N availability.To examine the effects of water and N supply on early growth and water use efficiency （WUE） of trees on dry soils,one-year-old seedlings of Robinia pseudoacacia were exposed to three soil water contents （non-limiting,medium drought,and severe drought） as well as to low and high N levels,for four months.Photosynthetic parameters,leaf instantaneous WUE （WUEi） and whole tree WUE （WUEb） were determined.Results showed that,independent of N levels,increasing soil water content enhanced the tree transpiration rate （Tr）,stomatal conductance （Gs）,intercellular CO2 concentration （Ci）,maximum net assimilation rate （Amax）,apparent quantum yield （AQY）,the range of photosynthetically active radiation （PAR） due to both reduced light compensation point and enhanced light saturation point,and dark respiration rate （Rd）,resulting in a higher net photosynthetic rate （Pn） and a significantly increased whole tree biomass.Consequently,WUEi and WUEb were reduced at low N,whereas WUE i was enhanced at high N levels.Irrespective of soil water availability,N supply enhanced Pn in association with an increase of Gs and Ci and a decrease of the stomatal limitation value （Ls）,while Tr remained unchanged.Biomass and WUEi increased under non-limiting water conditions and medium drought,as well as WUEb under all water conditions;but under severe drought,WUEi and biomass were not affected by N application.In conclusion,increasing soil water availability improves photosynthetic capacity and biomass accumulation under low and high N levels,but its effects on WUE vary with soil N levels.N supply increased Pn and WUE,but under severe drought,N supply did not enhance WUEi and biomass.
文摘Knee instability as a symptom of ligament injury usually only receives attention when it causes pain or impacts patients’mobility in China.In this study both the physical and psychosocial impact of an innovative approach to treatment,Half-cut Wood Training,was examined.Twenty individuals with knee instability who received Halfcut Wood Training(Intervention group)and twenty two individuals with knee instability who did not receive Half-cut Wood Training(as Control group)participated in the study.The electric WIFI based HBF-306 was used to collect the anthropometry and biomedical data.Symptom severity was assessed by a doctor and through response to a specific question.Half-cut Wood Training was used as the intervention for the knee instability patients,and the effects among pre-intervention,post-intervention and control group on self-esteem,self-efficacy,quality of life and reductions in knee instability were assessed and compared to patients in the control group.The Half-cut Wood Training has significantly improved the physical health,self-esteem,self-efficacy,legs and feet functioning of patients in the intervention group compared with control group.Moreover,the Symptom were decreased(F=15.47,P<0.001),and the doctor reported knee function was improved(F=36.20,P<0.001).The subgroups including number of sessions of attending the Half-cut Wood Training had effects on the reduction of symptoms and duration of training time more than one month has effect on the improvement of physical health.Half-cut Wood Training provides beneficial means of improving knee function,self-esteem,self-efficacy,and physical health of the quality of life of patients with the knee instability.
基金supported by China National Key Research and Development Program(No.2016YFD0700304)Shandong Natural Science Foundation Youth Program(No.ZR2021QC216)Agricultural Scientific and Technological Innovation Project of Shandong Academy of Agricultural Science(No.CXGC2023A34)。
文摘Peach aphid is a common pest and hard to detect.This study employs hyperspectral imaging technology to identify early damage in green cabbage caused by peach aphid.Through principal component transformation and multiple linear regression analysis,the correlation relation between spectral characteristics and infestation stage is analyzed.Then,four characteristic wavelength selection methods are compared and optimal characteristic wavelengths subset is determined to be input for modelling.One linear algorithm and two nonlinear modelling algorithms are compared.Finally,support vector machine(SVM)model based on the characteristic wavelengths selected by multi-cluster feature selection(MCFS)acquires the highest identification accuracy,which is 98.97%.These results indicate that hyperspectral imaging technology have the ability to identify early peach aphid infestation stages on green cabbages.
基金This study was supported by the National Natural Science Foundation of China(81473598).
文摘Objective:To explore the correlations between five-pattern personality scores and autonomic nervous response indicators in Chinese female college students,to provide a foundation for further exploration of the modern physiological basis of these personality types.Methods:Subjects were asked to fill in 'The Five-Pattern Personality Inventory' (revised edition 2008).Taiyang,Shaoyang,yin-yang balance,Taiyin,and Shaoyin personalities were scored.The galvanic skin response and heart rate,and the low frequency (LF),high frequency (HF),and LF/HF ratio of heart rate variability were collected using a 16-channel physiological recorder (BIOPAC MP150).Relationship between the five-pattern personality scores and autonomic nervous response indicators was analyzed using bivariate correlation.Results:The five-pattern personality scores of the subjects were compared with national averages.The Taiyang and Shaoyang personality scores of the subjects were significantly lower than the overall national average,the national female average,and the national female average in the 18-29-year-old age group (all P <.05).The Taiyang personality score was negatively correlated with both the LF and the HF (P =.009 and P =.001,respectively),and the yin-yang balance personality score was significantly negatively correlated with the galvanic skin response (P =.026).Conclusion:There is a relationship between five-pattern personality scores and autonomic nervous response indicators in Chinese female college students.The higher the Taiyang personality score,the lower the sympathetic and vagus nerve excitability;the higher the yinyang balance personality score,the lower the sympathetic nerve excitability.
基金Shaanxi Provincial Key Research and Development Program(Project No.2024SF-YBXM-242)。
文摘Objective:To explore the efficacy of auricular acupuncture combined with transcutaneous electrical nerve stimulation(TENS)and nonsteroidal anti-inflammatory drugs(NSAIDs)in alleviating postpartum uterine pain.Methods:A total of 501 postpartum women with uterine pain were randomly divided into an experimental group(n=250)and a control group(n=251).The control group received oral NSAIDs(such as ibuprofen sustained-release capsules,diclofenac sodium suppositories,etc.),while the experimental group received auricular acupuncture and TENS in addition to the NSAIDs.The clinical efficacy,pain intensity,and vaginal bleeding volume of the two groups were observed.Results:The total effective rate in the experimental group(93.20%)was significantly higher than that in the control group(73.20%)(P<0.001).The NRS scores in the experimental group were lower than those in the control group after the intervention,and the bleeding volume within 24 h and 48 h after the intervention was also less than that in the control group,with significant differences(all P<0.001).Conclusion:Auricular acupuncture combined with TENS and NSAIDs for the treatment of postpartum uterine pain is safe and effective,can significantly reduce pain and vaginal bleeding,and is worthy of clinical promotion.
基金Shenzhen Institute of Information Technology,2022 University-Level Doctoral and Master Research Support Project(The First Batch)“Research on the Status and Countermeasures of Youth Identification on Socialist Core Values from the Perspective of Guangdong-Hong Kong-Macao Greater Bay Area”(SZIIT2022SK037)。
文摘Socialist core values are the concentrated expression and highly condensed values of the state,society,and individuals.They are also the embodiment of the values and spiritual consensus and pursuit in the life of the state and society.This article analyzes and summarizes the research results on the identification of socialist core values in China in recent years,mainly sorting out aspects such as the significance of identification,the dialectical relationship between identification and practice,differences in identification levels among different groups,and paths to enhance identification.Finally,suggestions for further deepening future research are proposed.
基金financially supported by Shandong Provincial Natural Science Foundation,China(Grant No.ZR2022MC067)the National Key R&D Program of China(Grant No.2021YFB3901303)+2 种基金the Key R&D Program of Shandong Province,China(Grant No.2022 CXGC010610)the Agricultural Scientific and Technological Innovation Project of Shandong Academy of Agricultural Sciences,China(Grant No.CXGC2023D02)the Special International Cooperation Program of Shandong Academy of Agricultural Sciences,China(Grant No.CXGC2023G24).
文摘Recent approaches to the internal quality inspection of apples with the application of hyperspectral imaging technology are highly cost-intensive because of labor involvement for the data collection on a fixed posture and manual selection of the region of interest(RoI).In addition,several studies have repeated the data acquisition for the same apple.Current methods cannot meet the automation requirements of the sorting line.Therefore,this study proposed a novel method for automatically selecting RoI in hyperspectral images of apples with random poses.Firstly,the preliminary RoI selection of apple hyperspectral image was carried out,followed by the performance of histogram statistics of each pixel with spectral intensity at 700 nm wavelength.The top 40%area of the spectral intensity was reserved to obtain the magnitude relationship of the spectral intensity of each pixel point and a morphological erosion operation.Original apple RoI was acquired and overexposed pixels were removed with spectral intensity greater than 3900(maximum 4095)in the reserved area at 700 nm.Secondly,the relationship between apple size and prediction accuracy was measured for the in-depth RoI analysis.A partial least square regression(PLSR)model was established between the average spectrum and apple sugar content of RoI with different sizes.Finally,the established model with the top 70%of the spectral intensity achieved the best prediction accuracy.Non-destructive estimation of apple sugar content was performed through hyperspectral imaging technology with reference to the proposed RoI selection method.A competitive adaptive reweighted sampling algorithm along the PLSR(CARS-PLSR)model was established after black-and-white correction and standard normal transformation(SNV)preprocessing and obtained the highest prediction accuracy.The determination coefficient of cross-validation(R_(cv))and root mean square error of cross-validation(RMSECV)were 0.9595 and 0.3203°Brix,respectively.The determination coefficient of prediction(R_(p))was 0.9308,and the root mean square error of prediction(RMSEP)was 0.4681°Brix.Results proved that the auto-selection of RoI is an efficient and accurate method,which can provide a foundation in practical application for online apple grading systems with hyperspectral imaging technology.
基金This work was financially supported by the EU Horizon 2020 through project ETEXWELD-H2020-MSCA-RISE-2014(Grant No.644268)the University of Manchester through the UMRI project‘Graphene-Smart Textiles E-Healthcare Network’(AA14512).
文摘The rapid expansion of the fast fashion industry brings about environmental concerns such as dyestuffs-related water pollutions and waste textiles.Conventional wastewater-disposal strategies emphasize the optimization of photocatalytic activity to improve pollutant degradation efficiency,while the absorptivity,recyclability and sustainability of photocatalysts are always ignored.The overproduced textiles are still in urgent of being recycled and reutilized in eco-friendly approaches.In this work,a scalable dyeing technology is employed to achieve green and sustainable reutilization of waste textiles.The functionalized TiO2/reduced graphene oxide wool fabrics show excellent sustainability,remarkable adsorbing capacity and enhanced photocatalytic performance.By taking advantage of these properties,we develop an integrated strategy of nighttime adsorption and day-time photodegradation which could significantly optimize the dyestuffs degradation efficiency.The concept of waste textiles reutilization and wastewater treatment in this work provides practical potential for efficient and sustainable environmental remediation.
基金supported by grants from the Key Program of the National Natural Science Foundation of China (No.91131902)the Knowledge Innovation Program of the Chinese Academy of Sciences (KSCX2-EX-QR-1)
文摘While it is widely accepted that genetic diversity determines the potential of adaptation,the role that gene expression variation plays in adaptation remains poorly known.Here we show that gene expression diversity could have played a positive role in the adaptation of Miscanthus lutarioriparius.RNA-seq was conducted for 80 individuals of the species,with half planted in the energy crop domestication site and the other half planted in the control site near native habitats.A leaf reference transcriptome consisting of 18,503 high-quality transcripts was obtained using a pipeline developed for de novo assembling with population RNA-seq data.The population structure and genetic diversity of M.lutarioriparius were estimated based on 30,609 genic single nucleotide polymorphisms.Population expression（Ep） and expression diversity（Ed）were defined to measure the average level and the magnitude of variation of a gene expression in the population,respectively.It was found that expression diversity increased while genetic Resediversity decreased after the species was transplanted from the native habitats to the harsh domestication site,especially for genes involved in abiotic stress resistance,histone methylation,and biomass synthesis under water limitation.The increased expression diversity could have enriched phenotypic variation directly subject to selections in the new environment.
基金supported by the Natural Science Foundation of China(U1904187)the Excellent Youth Scholars of Henan Scientific Committee(202300410223)the Innovative Research Team of High-Level Local Universities in Shanghai.
文摘Global warming and climate change caused by the emission of carbon dioxide(CO_(2))have induced unprecedented threats to the natural environment.Efficient utilization of CO_(2)is a highly desirable approach to neutralizing CO_(2)emissions.Li-CO_(2)batteries can store electrochemical energy.They have received considerable attention due to their ability to“fix”and convert CO_(2).
