Background:Currently,building resilience in nurses is recognized as an important factor that helps maintain their health and stay in their profession;thus,identifying which factors can help them build resilience is ne...Background:Currently,building resilience in nurses is recognized as an important factor that helps maintain their health and stay in their profession;thus,identifying which factors can help them build resilience is necessary.Methods:A cross-sectional survey design was used,and 1356 nurses from 11 general hospitals in Guangzhou,China,were assessed using the Chinese version of the Conner-Davidson Resilience Scale,the General Self-Efficacy Scale,the Simplified Coping Style Questionnaire,and the Job Stress Scale of Chinese nurses.The demographic characteristics of participants were also gathered.Results:The mean total score of nurses' resilience is 59.99 (SD 13.59),which was significantly lower (P < 0.001) than that of the general people in China.The regression analysis affirmed that the factors which influence the resilience of nurses include self-efficacy,coping style,job stress,and education level (R2 =49.4%,P < 0.001).Conclusion:Nurses had low resilience.They could not effectively cope with job challenges and recover from adversity.Strengthening self-efficacy,choosing active coping,decreasing job stress,and enhancing educational training can effectively improve their resilience.展开更多
Human disturbances are considered to break reproduction barriers among species.Significant increases in hybridization events have been reported among a large number of taxonomic groups in anthropogenic environments,pr...Human disturbances are considered to break reproduction barriers among species.Significant increases in hybridization events have been reported among a large number of taxonomic groups in anthropogenic environments,providing novel insights into species evolution mechanisms and conservation management in the Anthropocene.The Eastern Golden Frog(Pelophylax plancyi)and BlackSpotted Frog(P.nigromaculatus)are two sympatric anuran species with a long history of mitochondrial genome introgression in highly urbanized continental East Asia.However,there is only limited understanding of the pattern of their contemporary hybridization and factors influencing their interspecific relationship under anthropogenic disturbances.Here,interspecific hybridization between P.plancyi and P.nigromaculatus at the population level was investigated in Shanghai.All except two haplotypes obtained from both species in Shanghai were mixed together,and located in the introgression clade,implying multiple ancient mitochondrial introgression events occurred in the populations of our study area.Asymmetric genetic introgression was detected by microsatellite markers,with 0.7%of P.plancyi and 14.6%of P.nigromaculatus identified as contemporary admixed individuals.Consistent with the trend of population density,higher genetic diversity of neutral microsatellite loci was found in the more abundant P.plancyi;however,variation in mitochondrial(Cyt-b)and nuclear(POMC)genes was higher in relatively rare P.nigromaculatus.The population density of P.plancyi and number of water patches within local habitats were significantly positively correlated with both occurrences and proportions of admixed individuals in the populations of P.plancyi and P.nigromaculatus.Considering the prevalent transformation of habitats in urbanized areas,these results imply that a high population density in isolated artificially altered habitats is likely to increase interspecific hybridization.Thus,population monitoring and improvement of landscape connectivity between habitats would be needed to control the intensity of interspecific hybridization between P.plancyi and P.nigromaculatus in anthropogenic-disturbed environments.展开更多
Aromatherapy is the therapeutic use of oil from herbs, flowers, and other plants. The aim of this meta-analysis was to quantify the effectiveness of aromatherapy for laboring women. We searched five electronic databas...Aromatherapy is the therapeutic use of oil from herbs, flowers, and other plants. The aim of this meta-analysis was to quantify the effectiveness of aromatherapy for laboring women. We searched five electronic databases till November 15th 2013 including those Chinese and English language articles. A total of 4 eligible studies were identified. Aromatherapy was effective in reducing the length of labor, but there were no statistically significant effects in the use of pharmacological analgesia, spontaneous vaginal delivery, caesarean delivery and assisted vaginal birth. Due to the limited number of articles identified, the evidence is not sufficiently convincing that aromatherapy is an effective therapy for laboring women.展开更多
The increased risk of mucosa-associated lymphoid tissue(MALT)lymphoma is closely associated with chronic antigenic stimulation,with infection being the most common cause of recurrence.Lesions are usually associated wi...The increased risk of mucosa-associated lymphoid tissue(MALT)lymphoma is closely associated with chronic antigenic stimulation,with infection being the most common cause of recurrence.Lesions are usually associated with the gastrointestinal tract,and the involvement of small intestinal is rare.Recent studies have established a close relationship between novel coronavirus 2019(COVID-19)and the occurrence and progression of various diseases.This article presents a rare case of a small intestinal MALT lymphoma.The patient was initially admitted with COVID-19 pneumonia and subsequently developed gastrointestinal bleeding during hospitalization.Medical and endoscopic treatments were ineffective,and an emergency exploratory laparotomy was performed.The affected segment of the small intestine was excised,and a pathological biopsy confirmed the diagnosis of MALT lymphoma.This case underscores the significance of raising clinical awareness of this condition among health care professionals.展开更多
Recently,the utilization of hydrazine borane(N_(2)H_(4)BH_(3))and hydrous hydrazine(N_(2)H_(4)·H_(2)O)as promising hydrogen carriers has received increasing research interest.In this work,NiIr alloy nanoparticles...Recently,the utilization of hydrazine borane(N_(2)H_(4)BH_(3))and hydrous hydrazine(N_(2)H_(4)·H_(2)O)as promising hydrogen carriers has received increasing research interest.In this work,NiIr alloy nanoparticles(NPs)immobilized on lanthanum oxy-carbonate(NiIr/La_(2)O_(2)CO_(3))have been successfully synthesized through a sodium–hydroxide-assisted reduction approach at room temperature.It was found that ultrafine NiIr NPs with an average size of around 2.3 nm were effectively and highly dispersed on La_(2)O_(2)CO_(3).NiIr/La_(2)O_(2)CO_(3) nanocomposites(NCs)prepared with the assistance of NaOH showed much higher catalytic activity and H_(2) selectivity toward the N_(2)H_(4)BH_(3) dehydrogenation reaction as compared to those of NiIr/La_(2)O_(2)CO_(3)–N prepared without addition of NaOH.Among all of the tested samples,the optimized Ni_(0.75)Ir_(0.25)/La_(2)O_(2)CO_(3) NCs exhibited the highest catalytic performance with 100%hydrogen selectivity for hydrogen generation from an aqueous solution of N_(2)H_(4)BH_(3).The total turnover frequency(TOF)of Ni_(0.75)Ir_(0.25)/La_(2)O_(2)CO_(3) NCs for this dehydrogenation reaction was found to be 1250 h^(−1) at 323 K,which is among the highest values ever reported.Additionally,this catalyst also exhibited a remarkable catalytic performance for efficient and complete decomposition of N_(2)H_(4)·H_(2)O.This excellent catalytic performance could be attributed to the high dispersion of metal NPs and the strong interaction between the metal and support as well as the promotion effect of NaOH.展开更多
The reasonable design of electrode materials with heterojunctions and vacancies is a promising strategy to elevate their electrochemical performances.Herein,tin-based sulfide composites with heterojunctions and sulfur...The reasonable design of electrode materials with heterojunctions and vacancies is a promising strategy to elevate their electrochemical performances.Herein,tin-based sulfide composites with heterojunctions and sulfur vacancies encapsulated by reduced graphene oxide(SnS_(2-x)P_(x)/RGO)were successfully designed and synthesized via a facile hydrothermal assisted phosphating method.The introduction of sulfur vacancies and construction of SnS-SnS2 heterojunctions were realized simultaneously by the phosphating process.The synergistic effect of the heterojunction,sulfur vacancy and phosphorus-doping could improve the conductivity,accelerate the ion transport dynamics,and enhance structural stability.Thus,high-rate,long-term cycling stability was observed for Li-half cells(337 mA h g^(-1) maintained after 3000 cycles at 10 A g^(-1))and Na-half cells(199 mA h g^(-1) maintained after 4000 cycles at 2 A g^(-1)).The design strategy can effectively improve the energy storage performance of tin based sulfides and can be extended to other metal sulfides.展开更多
This paper presented the initial investigation into the impact of Penicillium polonicum fermentation on the functional components and bioactivities of navel orange peel.The fermentation process resulted in a notable e...This paper presented the initial investigation into the impact of Penicillium polonicum fermentation on the functional components and bioactivities of navel orange peel.The fermentation process resulted in a notable enhancement of the total flavonoid content(TFC),total phenolic content(TPC),antioxidant capacity,antibacterial activity,and antiglycation activity of orange peel.Eighteen flavonoids were isolated and identified from the ethanolic extract of fermented orange peel(FEE)by employing chromatographic and spectroscopic techniques.The results of the HPLC analysis showed that three flavanones(naringenin,hesperetin,and isosakuranetin)were newly produced and present in high concentrations in FEE,with hesperetin being the most abundant component(39.74 mg/g)in comparison to the ethanolic extract of unfermented orange peel(EE).The TPC,TFC,antioxidant,and antiglycation activities of FEE,as well as the enzymatic activity of β-glucosidase in the fermented orange peels,showed a gradual increase with the progression of fermentation time over a fivemonth period.HPLC analysis revealed that the fermentation metabolites generated by P.polonicum in rice and orange peel media exhibited distinct profiles,indicating that the fermentation of orange peel by P.polonicum did not result in the production of potential mycotoxins.The findings of this study provided a scientific basis for the high-value utilization of navel orange peels and established a reference point for the potential applications of other peel byproducts via microbial fermentation.展开更多
文摘Background:Currently,building resilience in nurses is recognized as an important factor that helps maintain their health and stay in their profession;thus,identifying which factors can help them build resilience is necessary.Methods:A cross-sectional survey design was used,and 1356 nurses from 11 general hospitals in Guangzhou,China,were assessed using the Chinese version of the Conner-Davidson Resilience Scale,the General Self-Efficacy Scale,the Simplified Coping Style Questionnaire,and the Job Stress Scale of Chinese nurses.The demographic characteristics of participants were also gathered.Results:The mean total score of nurses' resilience is 59.99 (SD 13.59),which was significantly lower (P < 0.001) than that of the general people in China.The regression analysis affirmed that the factors which influence the resilience of nurses include self-efficacy,coping style,job stress,and education level (R2 =49.4%,P < 0.001).Conclusion:Nurses had low resilience.They could not effectively cope with job challenges and recover from adversity.Strengthening self-efficacy,choosing active coping,decreasing job stress,and enhancing educational training can effectively improve their resilience.
基金supported by the National Natural Science Foundation of China(32071529)the Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station(Z202204)+1 种基金Shanghai Key Lab for Urban Ecological Processes and EcoRestoration(SHUES2020B06,SHUES2021C04)the Fundamental Research Funds for the Central Universities.
文摘Human disturbances are considered to break reproduction barriers among species.Significant increases in hybridization events have been reported among a large number of taxonomic groups in anthropogenic environments,providing novel insights into species evolution mechanisms and conservation management in the Anthropocene.The Eastern Golden Frog(Pelophylax plancyi)and BlackSpotted Frog(P.nigromaculatus)are two sympatric anuran species with a long history of mitochondrial genome introgression in highly urbanized continental East Asia.However,there is only limited understanding of the pattern of their contemporary hybridization and factors influencing their interspecific relationship under anthropogenic disturbances.Here,interspecific hybridization between P.plancyi and P.nigromaculatus at the population level was investigated in Shanghai.All except two haplotypes obtained from both species in Shanghai were mixed together,and located in the introgression clade,implying multiple ancient mitochondrial introgression events occurred in the populations of our study area.Asymmetric genetic introgression was detected by microsatellite markers,with 0.7%of P.plancyi and 14.6%of P.nigromaculatus identified as contemporary admixed individuals.Consistent with the trend of population density,higher genetic diversity of neutral microsatellite loci was found in the more abundant P.plancyi;however,variation in mitochondrial(Cyt-b)and nuclear(POMC)genes was higher in relatively rare P.nigromaculatus.The population density of P.plancyi and number of water patches within local habitats were significantly positively correlated with both occurrences and proportions of admixed individuals in the populations of P.plancyi and P.nigromaculatus.Considering the prevalent transformation of habitats in urbanized areas,these results imply that a high population density in isolated artificially altered habitats is likely to increase interspecific hybridization.Thus,population monitoring and improvement of landscape connectivity between habitats would be needed to control the intensity of interspecific hybridization between P.plancyi and P.nigromaculatus in anthropogenic-disturbed environments.
文摘Aromatherapy is the therapeutic use of oil from herbs, flowers, and other plants. The aim of this meta-analysis was to quantify the effectiveness of aromatherapy for laboring women. We searched five electronic databases till November 15th 2013 including those Chinese and English language articles. A total of 4 eligible studies were identified. Aromatherapy was effective in reducing the length of labor, but there were no statistically significant effects in the use of pharmacological analgesia, spontaneous vaginal delivery, caesarean delivery and assisted vaginal birth. Due to the limited number of articles identified, the evidence is not sufficiently convincing that aromatherapy is an effective therapy for laboring women.
基金the Wuhan Young and Middle-aged Medical Backbone Personnel Training Project(No.2016(59)).
文摘The increased risk of mucosa-associated lymphoid tissue(MALT)lymphoma is closely associated with chronic antigenic stimulation,with infection being the most common cause of recurrence.Lesions are usually associated with the gastrointestinal tract,and the involvement of small intestinal is rare.Recent studies have established a close relationship between novel coronavirus 2019(COVID-19)and the occurrence and progression of various diseases.This article presents a rare case of a small intestinal MALT lymphoma.The patient was initially admitted with COVID-19 pneumonia and subsequently developed gastrointestinal bleeding during hospitalization.Medical and endoscopic treatments were ineffective,and an emergency exploratory laparotomy was performed.The affected segment of the small intestine was excised,and a pathological biopsy confirmed the diagnosis of MALT lymphoma.This case underscores the significance of raising clinical awareness of this condition among health care professionals.
基金supported by the National Natural Science Foundation of China(No.21763012 and 21802056)the Natural Science Foundation of Jiangxi Province of China(No.20181BAB213005 and 20192BAB203009)+1 种基金Jiangxi Provincial Education Department(No.GJJ170216)the Sponsored Program for Cultivating Youths of Outstanding Ability in Jiangxi Normal University.
文摘Recently,the utilization of hydrazine borane(N_(2)H_(4)BH_(3))and hydrous hydrazine(N_(2)H_(4)·H_(2)O)as promising hydrogen carriers has received increasing research interest.In this work,NiIr alloy nanoparticles(NPs)immobilized on lanthanum oxy-carbonate(NiIr/La_(2)O_(2)CO_(3))have been successfully synthesized through a sodium–hydroxide-assisted reduction approach at room temperature.It was found that ultrafine NiIr NPs with an average size of around 2.3 nm were effectively and highly dispersed on La_(2)O_(2)CO_(3).NiIr/La_(2)O_(2)CO_(3) nanocomposites(NCs)prepared with the assistance of NaOH showed much higher catalytic activity and H_(2) selectivity toward the N_(2)H_(4)BH_(3) dehydrogenation reaction as compared to those of NiIr/La_(2)O_(2)CO_(3)–N prepared without addition of NaOH.Among all of the tested samples,the optimized Ni_(0.75)Ir_(0.25)/La_(2)O_(2)CO_(3) NCs exhibited the highest catalytic performance with 100%hydrogen selectivity for hydrogen generation from an aqueous solution of N_(2)H_(4)BH_(3).The total turnover frequency(TOF)of Ni_(0.75)Ir_(0.25)/La_(2)O_(2)CO_(3) NCs for this dehydrogenation reaction was found to be 1250 h^(−1) at 323 K,which is among the highest values ever reported.Additionally,this catalyst also exhibited a remarkable catalytic performance for efficient and complete decomposition of N_(2)H_(4)·H_(2)O.This excellent catalytic performance could be attributed to the high dispersion of metal NPs and the strong interaction between the metal and support as well as the promotion effect of NaOH.
基金supported by the National Natural Science Foundation of China(contract 51872162 and 11890700)the Key R&D Innovation Program of Shandong Province-Major Innovation Project(2019TSLH0116).
文摘The reasonable design of electrode materials with heterojunctions and vacancies is a promising strategy to elevate their electrochemical performances.Herein,tin-based sulfide composites with heterojunctions and sulfur vacancies encapsulated by reduced graphene oxide(SnS_(2-x)P_(x)/RGO)were successfully designed and synthesized via a facile hydrothermal assisted phosphating method.The introduction of sulfur vacancies and construction of SnS-SnS2 heterojunctions were realized simultaneously by the phosphating process.The synergistic effect of the heterojunction,sulfur vacancy and phosphorus-doping could improve the conductivity,accelerate the ion transport dynamics,and enhance structural stability.Thus,high-rate,long-term cycling stability was observed for Li-half cells(337 mA h g^(-1) maintained after 3000 cycles at 10 A g^(-1))and Na-half cells(199 mA h g^(-1) maintained after 4000 cycles at 2 A g^(-1)).The design strategy can effectively improve the energy storage performance of tin based sulfides and can be extended to other metal sulfides.
基金supported by the Key Research Project of Jiangxi Province(No.20224BBF61026)the’Double Thousand Talents Plan’of Jiangxi Province(jxsq2019102029).
文摘This paper presented the initial investigation into the impact of Penicillium polonicum fermentation on the functional components and bioactivities of navel orange peel.The fermentation process resulted in a notable enhancement of the total flavonoid content(TFC),total phenolic content(TPC),antioxidant capacity,antibacterial activity,and antiglycation activity of orange peel.Eighteen flavonoids were isolated and identified from the ethanolic extract of fermented orange peel(FEE)by employing chromatographic and spectroscopic techniques.The results of the HPLC analysis showed that three flavanones(naringenin,hesperetin,and isosakuranetin)were newly produced and present in high concentrations in FEE,with hesperetin being the most abundant component(39.74 mg/g)in comparison to the ethanolic extract of unfermented orange peel(EE).The TPC,TFC,antioxidant,and antiglycation activities of FEE,as well as the enzymatic activity of β-glucosidase in the fermented orange peels,showed a gradual increase with the progression of fermentation time over a fivemonth period.HPLC analysis revealed that the fermentation metabolites generated by P.polonicum in rice and orange peel media exhibited distinct profiles,indicating that the fermentation of orange peel by P.polonicum did not result in the production of potential mycotoxins.The findings of this study provided a scientific basis for the high-value utilization of navel orange peels and established a reference point for the potential applications of other peel byproducts via microbial fermentation.
