To assess the efficacy of prehabilitation programs in improving quality of life and alleviating anxiety and depression among adults undergoing surgery,a systematic review and meta-analysis was conducted by searching s...To assess the efficacy of prehabilitation programs in improving quality of life and alleviating anxiety and depression among adults undergoing surgery,a systematic review and meta-analysis was conducted by searching seven major biomedical databases(CNKI,Wanfang,Cochrane Library,PubMed,Web of Science,Embase,and Sinomed)from inception to October 30,2025.Randomized controlled trials evaluating prehabilitation interventions in surgical patients were included.Eleven studies met inclusion criteria.Prehabilitation significantly improved postoperative quality of life(effect size=4.68,95%CI[1.18,8.18],p<0.05)and reduced depressive symptoms(effect size=−0.13,95%CI[−0.26,−0.01],p<0.03),whereas its effect on anxiety was not significant(effect size=0.01,95%CI[−0.13,0.14],p=0.92).Subgroup analyses indicated that benefits were most evident in the medium-term period,while long-term effects were minimal.No publication bias was observed,and the overall quality of evidence was moderate.Prehabilitation is effective in enhancing quality of life and reducing depression in surgical patients;however,its impact on anxiety remains inconclusive.Optimal effects may be associated with structured,multimodal prehabilitation programs and medium-term follow-up.Future randomized trials should examine program components,delivery modes,and long-term outcomes to refine clinical implementation.展开更多
The efficient heat dissipation of electronic equipment is very important,its heat dissipation performance directly determines the life of the equipment itself.A hand-held electronic communications equipment,when used ...The efficient heat dissipation of electronic equipment is very important,its heat dissipation performance directly determines the life of the equipment itself.A hand-held electronic communications equipment,when used in surface temperature is exorbitant,need to heat dissipation equipment efficiently,to ensure that the use of comfort in the handheld.In accordance with this requirement,this article presents a flexible composite material based on nano-efficient cooling methods that can keep the layout,through the improvement of internal thermal path,it can achieve the effective heat dissipation.The network thermal resistance method is used to analyze the heat transfer in the equipment,and the thermal analysis of the local thermal resistance is carried out.At the same time,through the modeling of electronic equipment and the analysis of finite elements,the temperature drop of the equipment after improvement is accurately judged.Finally,the device experimental performance comparison before and after the optimization of the standby mode and working mode is verified.The results show that the optimized equipment heat source temperature can be reduced by up to 8.5℃,the surface temperature of the equipment can be reduced by about 5℃~7℃,and the final control equipment in the steady standby state of the temperature of about 39±0.5℃,to ensure the comfort of use,and also improved the service life of the equipment.The efficient thermal design of electronic equipment based on flexible nanocomposites can provide a convenient and reliable cooling solution for high-heat flow density devices.展开更多
There is no consensus on the impact of population aging on education investment.To explore this question,we first build an overlapping generations(OLG)model to theoretically analyze the effect of population aging on h...There is no consensus on the impact of population aging on education investment.To explore this question,we first build an overlapping generations(OLG)model to theoretically analyze the effect of population aging on human capital investment in China,and then test our theory by conducting an empirical study based on micro household data.We find the following.(1)Theoretically,the OLG model shows that population aging has a crowding-out effect on education investment.(2)Empirically,the results show that the share of education and training expenditures decreases by 5.27 percentage points as the ratio of old people in the household increases by 100 percentage points,which confirms the crowding-out effect of population aging on human capital investment.(3)The crowding-out effect is far more intense on urban households than on rural households since health care expenditures will be greater in urban areas as population aging increases.(4)A quantile regression indicates that the negative effect of population aging on the share of educational expenditure is concentrated in households with higher shares of education expenditures.We confirm the robustness of our results using regional fixed effect and instrumental variable(Ⅳ)regressions.展开更多
基金supported by the 2024 Nursing Research Fund(General Project)of Tongji Hospital,Tongji Medical College,Huazhong University of Science and Technology,2024D50.
文摘To assess the efficacy of prehabilitation programs in improving quality of life and alleviating anxiety and depression among adults undergoing surgery,a systematic review and meta-analysis was conducted by searching seven major biomedical databases(CNKI,Wanfang,Cochrane Library,PubMed,Web of Science,Embase,and Sinomed)from inception to October 30,2025.Randomized controlled trials evaluating prehabilitation interventions in surgical patients were included.Eleven studies met inclusion criteria.Prehabilitation significantly improved postoperative quality of life(effect size=4.68,95%CI[1.18,8.18],p<0.05)and reduced depressive symptoms(effect size=−0.13,95%CI[−0.26,−0.01],p<0.03),whereas its effect on anxiety was not significant(effect size=0.01,95%CI[−0.13,0.14],p=0.92).Subgroup analyses indicated that benefits were most evident in the medium-term period,while long-term effects were minimal.No publication bias was observed,and the overall quality of evidence was moderate.Prehabilitation is effective in enhancing quality of life and reducing depression in surgical patients;however,its impact on anxiety remains inconclusive.Optimal effects may be associated with structured,multimodal prehabilitation programs and medium-term follow-up.Future randomized trials should examine program components,delivery modes,and long-term outcomes to refine clinical implementation.
基金This work was funded by the Manned spaceflight project in advance(020301).
文摘The efficient heat dissipation of electronic equipment is very important,its heat dissipation performance directly determines the life of the equipment itself.A hand-held electronic communications equipment,when used in surface temperature is exorbitant,need to heat dissipation equipment efficiently,to ensure that the use of comfort in the handheld.In accordance with this requirement,this article presents a flexible composite material based on nano-efficient cooling methods that can keep the layout,through the improvement of internal thermal path,it can achieve the effective heat dissipation.The network thermal resistance method is used to analyze the heat transfer in the equipment,and the thermal analysis of the local thermal resistance is carried out.At the same time,through the modeling of electronic equipment and the analysis of finite elements,the temperature drop of the equipment after improvement is accurately judged.Finally,the device experimental performance comparison before and after the optimization of the standby mode and working mode is verified.The results show that the optimized equipment heat source temperature can be reduced by up to 8.5℃,the surface temperature of the equipment can be reduced by about 5℃~7℃,and the final control equipment in the steady standby state of the temperature of about 39±0.5℃,to ensure the comfort of use,and also improved the service life of the equipment.The efficient thermal design of electronic equipment based on flexible nanocomposites can provide a convenient and reliable cooling solution for high-heat flow density devices.
基金The authors gratefully acknowledge financial support from the National Social Science Foundation of China(No.17ZDA049),the Natural Science Foundation of Does Population Aging Hinder the Accumulation of Human Capital? China(No.71773071,71973097),the 2019 Shanghai Philosophy and Social Science Planning Education Youth Project(No.B1903),the Shanghai Pujiang Program(No.16PJC034),and the Shanghai Business School Venus Project(No.18KY-PQMX-03).The editors’and referees’constructive comments for the paper are also gratefully acknowledged.
文摘There is no consensus on the impact of population aging on education investment.To explore this question,we first build an overlapping generations(OLG)model to theoretically analyze the effect of population aging on human capital investment in China,and then test our theory by conducting an empirical study based on micro household data.We find the following.(1)Theoretically,the OLG model shows that population aging has a crowding-out effect on education investment.(2)Empirically,the results show that the share of education and training expenditures decreases by 5.27 percentage points as the ratio of old people in the household increases by 100 percentage points,which confirms the crowding-out effect of population aging on human capital investment.(3)The crowding-out effect is far more intense on urban households than on rural households since health care expenditures will be greater in urban areas as population aging increases.(4)A quantile regression indicates that the negative effect of population aging on the share of educational expenditure is concentrated in households with higher shares of education expenditures.We confirm the robustness of our results using regional fixed effect and instrumental variable(Ⅳ)regressions.
