The traditional teaching methods of one-way cultivation of students can no longer meet the requirements of talent cultivation at this stage.The issue of how to promote students from passive acceptance to the independe...The traditional teaching methods of one-way cultivation of students can no longer meet the requirements of talent cultivation at this stage.The issue of how to promote students from passive acceptance to the independent cognitive understanding stage(i.e.deep learning)has become the focus of geography teaching.Therefore,under the guidance of deep learning theory,this paper takes the“landforms”knowledge unit of the Humanistic Education Edition as an example,improves the classroom teaching means through the unit teaching mode,reconstructs the“landforms”teaching unit,and explores the specific teaching of high school geography unit based on deep learning.This study provides a good example and guidelines for high school geography teaching and learning.展开更多
Artificial yarn muscles show great potential in applications requiring low-energy consumption while maintaining high performance. However, conventional designs have been limited by weak ion-yarn muscle interactions an...Artificial yarn muscles show great potential in applications requiring low-energy consumption while maintaining high performance. However, conventional designs have been limited by weak ion-yarn muscle interactions and inefficient “rocking-chair” ion migration. To address these limitations, we present an electrochemical artificial yarn muscle design driven by a dual-ion co-regulation system. By utilizing two reaction channels, this system shortens ion migration pathways, leading to faster and more efficient actuation. During the charging/discharging process, PF_6~- ions react with carbon nanotube yarn, while Li~+ ions react with an Al foil. The intercalation reaction between PF_6~- and collapsed carbon nanotubes allows the yarn muscle to achieve an energy-free high-tension catch state. The dual-ion coordinated yarn muscles exhibit superior contractile stroke, maximum contractile rate, and maximum power densities, exceeding those of “rocking-chair” type ion migration yarn muscles. The dual-ion co-regulation system enhances the ion migration rate during actuation, resulting in improved performance. Moreover, the yarn muscles can withstand high levels of isometric stress, displaying a stress of 61 times that of skeletal muscles and 8 times that of “rocking-chair” type yarn muscles at higher frequencies. This technology holds significant potential for various applications, including prosthetics and robotics.展开更多
Background:To evaluate the associations between a new definition of metabolic dysfunction-associated fatty liver disease(MAFLD)and extrahepatic cancers and compare with nonalcoholic fatty liver disease(NAFLD).Methods:...Background:To evaluate the associations between a new definition of metabolic dysfunction-associated fatty liver disease(MAFLD)and extrahepatic cancers and compare with nonalcoholic fatty liver disease(NAFLD).Methods:We enrolled 151,391 Chinese participants in the Kailuan cohort.Hepatic steatosis was detected by abdominal ultrasound.Fine and Gray competing risk regression models were used to estimate hazard ratios(HRs)and 95%confidence interval(CI)between MAFLD and extrahepatic cancers.Results:MAFLD was associated with increased risk of prostate(HR=1.49,95%CI:1.07-2.08)and obesity-related cancers,including thyroid(HR=1.47,95%CI:1.01-2.12),kidney(HR=1.54,95%CI:1.18-2.00),colorectal(HR=1.15,95%CI:0.98-1.34)and breast cancer(HR=1.31,95%CI:1.04-1.66).The results were consistent in NAFLD vs.non-NAFLD and MAFLD-NAFLD vs.neither FLD.Compared with the neither FLD group,the NAFLD-only group had a higher risk of extrahepatic cancers(HR=1.57,95%CI:1.18-2.09),esophageal(HR=5.11,95%CI:2.25-11.62),and bladder cancer(HR=3.36,95%CI:1.23-9.17).The additional risk of extrahepatic cancers(HR=1.42,95%CI:1.17-1.73),esophageal(HR=4.37,95%CI:2.55-7.49),and breast cancer(HR=1.99,95%CI:1.01-3.92)was observed in MAFLD with metabolic dysregulation,and kidney(HR=1.83,95%CI:1.38-2.43),prostate(HR=1.46,95%CI:1.00-2.14)and breast cancer(HR=1.33,95%CI:1.02-1.74)was observed in MAFLD with overweight and metabolic dysregulation,as well as colorectal(HR=1.45,95%CI:1.07-1.96)and prostate cancer(HR=2.44,95%CI:1.42-4.21)in MAFLD with three risk factors.Additionally,MAFLD with excessive alcohol consumption would increase extrahepatic cancers(HR=1.14,95%CI:1.01-1.29)and breast cancer(HR=7.27,95%CI:2.33-22.69)risk.Conclusions:MAFLD and NAFLD shared similar excessive risks of obesity-related cancers,suggesting a driving role of FLD in these cancers.Metabolic dysregulation beyond obesity may play additional kidney,colorectal,and prostate cancer risks in MAFLD patients.It may be helpful in the clinic to relieve symptoms by treating metabolic disorders and preventing adverse outcomes of extrahepatic cancers.展开更多
文摘The traditional teaching methods of one-way cultivation of students can no longer meet the requirements of talent cultivation at this stage.The issue of how to promote students from passive acceptance to the independent cognitive understanding stage(i.e.deep learning)has become the focus of geography teaching.Therefore,under the guidance of deep learning theory,this paper takes the“landforms”knowledge unit of the Humanistic Education Edition as an example,improves the classroom teaching means through the unit teaching mode,reconstructs the“landforms”teaching unit,and explores the specific teaching of high school geography unit based on deep learning.This study provides a good example and guidelines for high school geography teaching and learning.
基金financial support obtained from the National Key Research and Development Program of China (2020YFB1312900)the National Natural Science Foundation of China (21975281)+1 种基金Key Research Project of Zhejiang lab (No. K2022NB0AC04)Jiangxi Double Thousand Talent Program (No. jxsq2020101008)。
文摘Artificial yarn muscles show great potential in applications requiring low-energy consumption while maintaining high performance. However, conventional designs have been limited by weak ion-yarn muscle interactions and inefficient “rocking-chair” ion migration. To address these limitations, we present an electrochemical artificial yarn muscle design driven by a dual-ion co-regulation system. By utilizing two reaction channels, this system shortens ion migration pathways, leading to faster and more efficient actuation. During the charging/discharging process, PF_6~- ions react with carbon nanotube yarn, while Li~+ ions react with an Al foil. The intercalation reaction between PF_6~- and collapsed carbon nanotubes allows the yarn muscle to achieve an energy-free high-tension catch state. The dual-ion coordinated yarn muscles exhibit superior contractile stroke, maximum contractile rate, and maximum power densities, exceeding those of “rocking-chair” type ion migration yarn muscles. The dual-ion co-regulation system enhances the ion migration rate during actuation, resulting in improved performance. Moreover, the yarn muscles can withstand high levels of isometric stress, displaying a stress of 61 times that of skeletal muscles and 8 times that of “rocking-chair” type yarn muscles at higher frequencies. This technology holds significant potential for various applications, including prosthetics and robotics.
基金supported by CAMS Innovation Fund for Medical Sciences(CIFMS)(No.2016-I2M-3-001).
文摘Background:To evaluate the associations between a new definition of metabolic dysfunction-associated fatty liver disease(MAFLD)and extrahepatic cancers and compare with nonalcoholic fatty liver disease(NAFLD).Methods:We enrolled 151,391 Chinese participants in the Kailuan cohort.Hepatic steatosis was detected by abdominal ultrasound.Fine and Gray competing risk regression models were used to estimate hazard ratios(HRs)and 95%confidence interval(CI)between MAFLD and extrahepatic cancers.Results:MAFLD was associated with increased risk of prostate(HR=1.49,95%CI:1.07-2.08)and obesity-related cancers,including thyroid(HR=1.47,95%CI:1.01-2.12),kidney(HR=1.54,95%CI:1.18-2.00),colorectal(HR=1.15,95%CI:0.98-1.34)and breast cancer(HR=1.31,95%CI:1.04-1.66).The results were consistent in NAFLD vs.non-NAFLD and MAFLD-NAFLD vs.neither FLD.Compared with the neither FLD group,the NAFLD-only group had a higher risk of extrahepatic cancers(HR=1.57,95%CI:1.18-2.09),esophageal(HR=5.11,95%CI:2.25-11.62),and bladder cancer(HR=3.36,95%CI:1.23-9.17).The additional risk of extrahepatic cancers(HR=1.42,95%CI:1.17-1.73),esophageal(HR=4.37,95%CI:2.55-7.49),and breast cancer(HR=1.99,95%CI:1.01-3.92)was observed in MAFLD with metabolic dysregulation,and kidney(HR=1.83,95%CI:1.38-2.43),prostate(HR=1.46,95%CI:1.00-2.14)and breast cancer(HR=1.33,95%CI:1.02-1.74)was observed in MAFLD with overweight and metabolic dysregulation,as well as colorectal(HR=1.45,95%CI:1.07-1.96)and prostate cancer(HR=2.44,95%CI:1.42-4.21)in MAFLD with three risk factors.Additionally,MAFLD with excessive alcohol consumption would increase extrahepatic cancers(HR=1.14,95%CI:1.01-1.29)and breast cancer(HR=7.27,95%CI:2.33-22.69)risk.Conclusions:MAFLD and NAFLD shared similar excessive risks of obesity-related cancers,suggesting a driving role of FLD in these cancers.Metabolic dysregulation beyond obesity may play additional kidney,colorectal,and prostate cancer risks in MAFLD patients.It may be helpful in the clinic to relieve symptoms by treating metabolic disorders and preventing adverse outcomes of extrahepatic cancers.
