Intercropping has been widely used in arid and semi-arid regions because of its high yield,stable productivity,and efficient utilization of resources.However,in recent years,the high yield of traditional intercropping...Intercropping has been widely used in arid and semi-arid regions because of its high yield,stable productivity,and efficient utilization of resources.However,in recent years,the high yield of traditional intercropping is mainly attributed to the large amount of purchased resources such as water and fertilizer,plastic film,and mechanical power.These lead to a decline in cultivated land quality and exacerbate intercrops'premature root and canopy senescence.So,the application of traditional intercropping faces major challenges in crop production.This paper analyzes the manifestations,occurrence mechanisms,and agronomic regulatory pathways of crop senescence.The physiological and ecological characteristics of intercropping to delay root and canopy senescence of crops are reviewed in this paper.The main agronomic regulatory pathways of intercropping to delay root and canopy senescence of crops are based on above-and blow-ground interactions,including collocation of crop varieties,spatial arrangement,water and fertilizer management,and tillage and mulch practices.Future research fields of intercropping to delay root and canopy senescence should focus on the aspects of selecting and breeding special varieties,application of molecular biology techniques,and developing or applying models to predict and evaluate the root and canopy senescence process of intercrops.Comprehensive analysis and evaluation of different research results could provide a basis for enhancing intercropping delay root and canopy senescence through adopting innovative technologies for regulating the physio-ecological characteristics of intercrops.This would support developing and adopting high-yield,efficient,and sustainable intercropping systems in arid and semi-arid areas with high population density,limited land,and abundant light and heat resources.展开更多
To address the challenges of air stability and slurry processability in layered transition metal oxide O_(3)-type NaNi_(1/3)Fe_(1/3)Mn_(1/3)O_(2)(NFM)for sodium-ion batteries(SIBs),we have designed an innovative 500℃...To address the challenges of air stability and slurry processability in layered transition metal oxide O_(3)-type NaNi_(1/3)Fe_(1/3)Mn_(1/3)O_(2)(NFM)for sodium-ion batteries(SIBs),we have designed an innovative 500℃reheating strategy.This method improves the surface properties of NFM without the need for additional coating layers,making it more efficient and suitable for large-scale applications.Pristine NFM(NFM-P)was first synthesized through a high-temperature solid-state method and then modified using this reheating approach(NFM-HT).This strategy significantly enhances air stability and electrochemical performance,yielding an initial discharge specific capacity of 151.46 mAh/g at 0.1C,with a remarkable capacity retention of 95.04%after 100 cycles at 0.5C.Additionally,a 1.7 Ah NFM‖HC(hard carbon)pouch cell demonstrates excellent long-term cycling stability(94.64%retention after 500 cycles at 1C),superior rate capability(86.48%retention at 9C),and strong low-temperature performance(77%retention at-25℃,continuing power supply at-40℃).Notably,even when overcharged to 8.29 V,the pouch cell remained safe without combustion or explosion.This reheating strategy,which eliminates the need for a coating layer,offers a simpler,more scalable solution for industrial production while maintaining outstanding electrochemical performance.These results pave the way for broader commercial adoption of NFM materials.展开更多
Alzheimer’s disease(AD),as the predominant form of neurodegenerative disorders,exerts a profound impact on the health of the global elderly population.For decades,the elucidation of AD pathogenesis and the developmen...Alzheimer’s disease(AD),as the predominant form of neurodegenerative disorders,exerts a profound impact on the health of the global elderly population.For decades,the elucidation of AD pathogenesis and the development of diagnostic and therapeutic approaches have been the focus of extensive research.Over recent years,a fundamental shift has occurred in AD diagnostics—transitioning from reliance on clinical diagnosis alone to biomarker-supported frameworks.AD biomarker research has transitioned from postmortem histopathology to in vivo detection paradigms,enabling precision diagnosis and intervention.This review synthesizes recent advances in molecular biomarkers across three domains:Fluid biomarkers,Molecular imaging and Innovative detection platforms,and also evaluates the challenges and prospects of the clinical transformation of molecular markers for AD.展开更多
目的调查2022-2023年凉山地区住院新生儿轮状病毒感染特征,并开展多中心研究,结合数据分析制定防控措施提供科学依据。方法本研究为多中心调查,选取凉山地区6家县市级医院(西昌市人民医院、凉山州妇幼保健院、西昌市妇幼保健院、凉山州...目的调查2022-2023年凉山地区住院新生儿轮状病毒感染特征,并开展多中心研究,结合数据分析制定防控措施提供科学依据。方法本研究为多中心调查,选取凉山地区6家县市级医院(西昌市人民医院、凉山州妇幼保健院、西昌市妇幼保健院、凉山州昭觉县医院、西昌市冕宁县医院、凉山州越西县医院),采集2022年1月至2023年12月新生儿病房年龄<28d的新生儿大便样本2918份,其中2022年1393份(腹泻样本65份,非腹泻样本1328份),2023年1525份(腹泻样本77份,非腹泻样本1448份),对样本进行轮状病毒检测并分析感染特征。结果在2918份新生儿大便样本中,共检出轮状病毒阳性82份,阳性率为2.81%,其中腹泻新生儿中轮状病毒阳性率为34.51%(49/142),非腹泻新生儿轮状病毒阳性率为1.19%(33/2776),两者阳性率差异显著(P<0.05);呕吐新生儿中轮状病毒阳性率为34.75%(49/141),非呕吐新生儿轮状病毒阳性率为1.19%(33/2777),两者阳性率差异有统计学意义(P<0.05);发热新生儿中轮状病毒阳性率为35.00%(49/140),非发热新生儿轮状病毒阳性率为1.19%(33/2778),两者阳性率差异显著(P<0.05)。新生儿轮状病毒感染全年均可发生,其中7至9月阳性率<1.5%,12月至次年2月阳性率较高,均>4.5%,各月份阳性率差异具有统计学意义(P<0.05),新生儿轮状病毒感染可见明显季节感染高峰,12月至次年2月检出率较高;胎龄、出生体重、喂养方式、新生儿重症监护病房(neonatal intensive care unit,NICU)入住情况均是新生儿感染轮状病毒的危险因素(P<0.05);25.00%的轮状病毒感染患儿出现腹泻症状。结论轮状病毒感染是新生儿腹泻的重要原因,轮状病毒感染高峰期集中于每年的12月至次年2月,不同日龄新生儿轮状病毒感染率差异明显,需加以干预。腹泻、胎龄、喂养方式、出生体重、NICU入住情况是轮状病毒感染的危险因素,应结合轮状病毒流行病学特征,新生儿入院后即完善疑似感染轮状病毒实验室检查。展开更多
基金supported by the National Natural Science Foundation of China(32101857 and U21A20218)the China Agricultural University Corresponding Support Research Joint Fund(GSAU-DKZY-2024-001)+1 种基金the Science and Technology Program in Gansu Province,China(24ZDNA008and23JRRA1407)the Fuxi Young Talents Fund of Gansu Agricultural University,China(Gaufx-03Y10).
文摘Intercropping has been widely used in arid and semi-arid regions because of its high yield,stable productivity,and efficient utilization of resources.However,in recent years,the high yield of traditional intercropping is mainly attributed to the large amount of purchased resources such as water and fertilizer,plastic film,and mechanical power.These lead to a decline in cultivated land quality and exacerbate intercrops'premature root and canopy senescence.So,the application of traditional intercropping faces major challenges in crop production.This paper analyzes the manifestations,occurrence mechanisms,and agronomic regulatory pathways of crop senescence.The physiological and ecological characteristics of intercropping to delay root and canopy senescence of crops are reviewed in this paper.The main agronomic regulatory pathways of intercropping to delay root and canopy senescence of crops are based on above-and blow-ground interactions,including collocation of crop varieties,spatial arrangement,water and fertilizer management,and tillage and mulch practices.Future research fields of intercropping to delay root and canopy senescence should focus on the aspects of selecting and breeding special varieties,application of molecular biology techniques,and developing or applying models to predict and evaluate the root and canopy senescence process of intercrops.Comprehensive analysis and evaluation of different research results could provide a basis for enhancing intercropping delay root and canopy senescence through adopting innovative technologies for regulating the physio-ecological characteristics of intercrops.This would support developing and adopting high-yield,efficient,and sustainable intercropping systems in arid and semi-arid areas with high population density,limited land,and abundant light and heat resources.
基金the financial support provided by the Longzihu New Energy Laboratory Joint Fund of Henan Province(2023008)the Energy Storage Mater.and Processes Key Laboratory of Henan Province Open Fund(2021003)+1 种基金the Collaborative Innovation Team Project Fund of Industry-University-Research(32214085)the financial support received from Zhejiang Vast Na Technology Co.,Ltd.(24110380)。
文摘To address the challenges of air stability and slurry processability in layered transition metal oxide O_(3)-type NaNi_(1/3)Fe_(1/3)Mn_(1/3)O_(2)(NFM)for sodium-ion batteries(SIBs),we have designed an innovative 500℃reheating strategy.This method improves the surface properties of NFM without the need for additional coating layers,making it more efficient and suitable for large-scale applications.Pristine NFM(NFM-P)was first synthesized through a high-temperature solid-state method and then modified using this reheating approach(NFM-HT).This strategy significantly enhances air stability and electrochemical performance,yielding an initial discharge specific capacity of 151.46 mAh/g at 0.1C,with a remarkable capacity retention of 95.04%after 100 cycles at 0.5C.Additionally,a 1.7 Ah NFM‖HC(hard carbon)pouch cell demonstrates excellent long-term cycling stability(94.64%retention after 500 cycles at 1C),superior rate capability(86.48%retention at 9C),and strong low-temperature performance(77%retention at-25℃,continuing power supply at-40℃).Notably,even when overcharged to 8.29 V,the pouch cell remained safe without combustion or explosion.This reheating strategy,which eliminates the need for a coating layer,offers a simpler,more scalable solution for industrial production while maintaining outstanding electrochemical performance.These results pave the way for broader commercial adoption of NFM materials.
基金funded by the Science and Technology Plan Project in the Medical and Health Field of Maanshan City(YL-2023-43).
文摘Alzheimer’s disease(AD),as the predominant form of neurodegenerative disorders,exerts a profound impact on the health of the global elderly population.For decades,the elucidation of AD pathogenesis and the development of diagnostic and therapeutic approaches have been the focus of extensive research.Over recent years,a fundamental shift has occurred in AD diagnostics—transitioning from reliance on clinical diagnosis alone to biomarker-supported frameworks.AD biomarker research has transitioned from postmortem histopathology to in vivo detection paradigms,enabling precision diagnosis and intervention.This review synthesizes recent advances in molecular biomarkers across three domains:Fluid biomarkers,Molecular imaging and Innovative detection platforms,and also evaluates the challenges and prospects of the clinical transformation of molecular markers for AD.
文摘目的调查2022-2023年凉山地区住院新生儿轮状病毒感染特征,并开展多中心研究,结合数据分析制定防控措施提供科学依据。方法本研究为多中心调查,选取凉山地区6家县市级医院(西昌市人民医院、凉山州妇幼保健院、西昌市妇幼保健院、凉山州昭觉县医院、西昌市冕宁县医院、凉山州越西县医院),采集2022年1月至2023年12月新生儿病房年龄<28d的新生儿大便样本2918份,其中2022年1393份(腹泻样本65份,非腹泻样本1328份),2023年1525份(腹泻样本77份,非腹泻样本1448份),对样本进行轮状病毒检测并分析感染特征。结果在2918份新生儿大便样本中,共检出轮状病毒阳性82份,阳性率为2.81%,其中腹泻新生儿中轮状病毒阳性率为34.51%(49/142),非腹泻新生儿轮状病毒阳性率为1.19%(33/2776),两者阳性率差异显著(P<0.05);呕吐新生儿中轮状病毒阳性率为34.75%(49/141),非呕吐新生儿轮状病毒阳性率为1.19%(33/2777),两者阳性率差异有统计学意义(P<0.05);发热新生儿中轮状病毒阳性率为35.00%(49/140),非发热新生儿轮状病毒阳性率为1.19%(33/2778),两者阳性率差异显著(P<0.05)。新生儿轮状病毒感染全年均可发生,其中7至9月阳性率<1.5%,12月至次年2月阳性率较高,均>4.5%,各月份阳性率差异具有统计学意义(P<0.05),新生儿轮状病毒感染可见明显季节感染高峰,12月至次年2月检出率较高;胎龄、出生体重、喂养方式、新生儿重症监护病房(neonatal intensive care unit,NICU)入住情况均是新生儿感染轮状病毒的危险因素(P<0.05);25.00%的轮状病毒感染患儿出现腹泻症状。结论轮状病毒感染是新生儿腹泻的重要原因,轮状病毒感染高峰期集中于每年的12月至次年2月,不同日龄新生儿轮状病毒感染率差异明显,需加以干预。腹泻、胎龄、喂养方式、出生体重、NICU入住情况是轮状病毒感染的危险因素,应结合轮状病毒流行病学特征,新生儿入院后即完善疑似感染轮状病毒实验室检查。
