Dear Editor,This letter focuses on the trajectory tracking of 7000 m JIAOLONG manned submersible vehicle(MSV)with disturbances.The robust controller is realized by a composite control law,where an analytical nonlinear...Dear Editor,This letter focuses on the trajectory tracking of 7000 m JIAOLONG manned submersible vehicle(MSV)with disturbances.The robust controller is realized by a composite control law,where an analytical nonlinear model predictive control(MPC)component is proposed to meet the requirements on tracking performance.展开更多
目的:分析产时超声在产妇第二产程超过2H中的应用价值及对母婴结局的影响。方法:选择2021年10月~2022年12月我院生产的第二产程时间>2H的初产妇113例作为研究对象为观察组,另选同期分娩第二产程<2H的分娩初产妇100例为对照组。两...目的:分析产时超声在产妇第二产程超过2H中的应用价值及对母婴结局的影响。方法:选择2021年10月~2022年12月我院生产的第二产程时间>2H的初产妇113例作为研究对象为观察组,另选同期分娩第二产程<2H的分娩初产妇100例为对照组。两组产妇均在产时采用超声监测,分析两组产妇妊娠母婴结局,以及临床各项参数指标差异。结果:观察组产妇自然分娩明显少于对照组;胎方位非枕前位明显高于对照组;切线与耻骨联合长轴夹角(ANGLE OF THE OCCIPITOPOSTERIOR DIAMETER,AOP)明显低于对照组,会阴最短间隔(Head-Perineum Distance,HPD)明显高于对照组;观察组患者不良妊娠结局发生率明显高于对照组(P均<0.05)。发生不良妊娠结局与未发生者超声参数指标:胎方位非枕前位、AOP、HPD存在统计学差异;将上述指标纳入Logistic回归模型,通过回归系数得出两项联合的数值,进一步ROC曲线显示,两项联合预测AUC为0.961,敏感度、特异度为97.8%、86.0%。结论:超声对产程超过2H的产妇母婴不良妊娠结局预测具有较高的预测价值。展开更多
Routing plays a critical role in data transmission for underwater acoustic sensor networks(UWSNs)in the internet of underwater things(IoUT).Traditional routing methods suffer from high end-toend delay,limited bandwidt...Routing plays a critical role in data transmission for underwater acoustic sensor networks(UWSNs)in the internet of underwater things(IoUT).Traditional routing methods suffer from high end-toend delay,limited bandwidth,and high energy consumption.With the development of artificial intelligence and machine learning algorithms,many researchers apply these new methods to improve the quality of routing.In this paper,we propose a Qlearning-based multi-hop cooperative routing protocol(QMCR)for UWSNs.Our protocol can automatically choose nodes with the maximum Q-value as forwarders based on distance information.Moreover,we combine cooperative communications with Q-learning algorithm to reduce network energy consumption and improve communication efficiency.Experimental results show that the running time of the QMCR is less than one-tenth of that of the artificial fish-swarm algorithm(AFSA),while the routing energy consumption is kept at the same level.Due to the extremely fast speed of the algorithm,the QMCR is a promising method of routing design for UWSNs,especially for the case that it suffers from the extreme dynamic underwater acoustic channels in the real ocean environment.展开更多
Leaf inclination,a component of crop architecture,influences photosynthetic efficiency and planting density.Various factors,particularly the phytohormones auxin and brassinosteroids(BRs),function in regulating lamina ...Leaf inclination,a component of crop architecture,influences photosynthetic efficiency and planting density.Various factors,particularly the phytohormones auxin and brassinosteroids(BRs),function in regulating lamina joint bending,and understanding of the genetic control of leaf inclination will help to elucidate the relevant regulatory network.Screening a rice T-DNA insertion population revealed a mutant that was insensitive to auxin and displayed an enlarged leaf angle due to increased cell length on the adaxial side of the lamina joint.Genetic analysis revealed that the increased leaf inclination was caused by T-DNA insertion in the promoter region of OsIAA6,resulting in elevated OsIAA6 expression.Further study showed that OsIAA6 interacts with OsARF1 to suppress auxin signaling and regulates leaf inclination.OsIAA6 mediates the BR effects on lamina joint development,and OsBZR1,the key transcription factor in BR signaling,binds directly to the promoter of OsIAA6 to stimulate its transcription.These results indicate the roles of the OsIAA6-OsARF1 module in regulating rice leaf inclination and suggest the synergistic effects of the phytohormones auxin and BR.展开更多
[ Objective ] This study aimed to explore the ways of using SSR technology to construct the fingerprinting maps of the loquat. [ Method ] Fingerprinting patterns of the SSR markers for 33 loquat varieties in national ...[ Objective ] This study aimed to explore the ways of using SSR technology to construct the fingerprinting maps of the loquat. [ Method ] Fingerprinting patterns of the SSR markers for 33 loquat varieties in national loquat germplasm resource garden were constructed by specifically amplifying palymorphism from 7 pairs of primers screened from 51 pairs of primers of the relatives Mains and Pyrus. [ Result ] The results showed that the uses of 7 primers, namely, Hi01d05F, Hil2iO4F, CH02B10F, Hi03a03, Hi03e04, Hi04a05 and Hi02c07 could distinguish 33 loquat germplasms from one another completely. [ Conclusion] This study provides an essential criterion for classification and identification of the loquat resources.展开更多
Objective:To investigate the effect of different blood glucose levels on viscera injury, oxidative stress response and Wnt5a inflammatory pathway in children with sepsis.Methods:70 children with sepsis treated in our ...Objective:To investigate the effect of different blood glucose levels on viscera injury, oxidative stress response and Wnt5a inflammatory pathway in children with sepsis.Methods:70 children with sepsis treated in our hospital between January 2014 and December 2015 were retrospectively collected and divided into the sepsis group A (blood glucose>10 mmol/L) (n=29) and the sepsis group B (blood glucose ≤10 mmol/L) (n=41) according to the different blood glucose levels, and 50 healthy children who accepted vaccination and were with normal blood glucose levels in our hospital during the same period were selected as healthy control group. The day after admission, RIA method was used to determine liver function indexes;automatic biochemical analyzer was used to determine oxidative stress indexes;enzyme-linked immunosorbent assay (ELISA) was used to detect Wnt5a inflammatory pathway index levels.Results: Liver function indexes total bilirubin (TBIL), alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels of sepsis group A were higher than those of sepsis group B and healthy control group (P<0.05);oxidative stress indexes advanced protein oxidation products (AOPPs), lipid hydrogen peroxide (LHP), reactive oxygen species (ROS), and malondialdehyde (MDA) levels were higher than those of sepsis group B and healthy control group while glutathione peroxidase (GSH-Px) level was lower than that of sepsis group B and healthy control group (P<0.05);serum Wnt5a inflammatory pathway indexes interleukin-1β (IL-1β), interleukin-6 (IL-6), interleukin-12 (IL-12) and macrophage inflammatory protein-1β (MIP-1β) levels were higher than those of sepsis group B and healthy control group (P<0.05).Conclusions:Sepsis children with high blood glucose are with severe liver function damage as well as intense oxidative stress and inflammatory response, which are the important indexes for severe illness and poor prognosis.展开更多
基金supported by the National Natural Science Foundation of China(62273165)the China Postdoctoral Science Foundation(2021M702505)the 111 Project(B23008)。
文摘Dear Editor,This letter focuses on the trajectory tracking of 7000 m JIAOLONG manned submersible vehicle(MSV)with disturbances.The robust controller is realized by a composite control law,where an analytical nonlinear model predictive control(MPC)component is proposed to meet the requirements on tracking performance.
文摘目的:分析产时超声在产妇第二产程超过2H中的应用价值及对母婴结局的影响。方法:选择2021年10月~2022年12月我院生产的第二产程时间>2H的初产妇113例作为研究对象为观察组,另选同期分娩第二产程<2H的分娩初产妇100例为对照组。两组产妇均在产时采用超声监测,分析两组产妇妊娠母婴结局,以及临床各项参数指标差异。结果:观察组产妇自然分娩明显少于对照组;胎方位非枕前位明显高于对照组;切线与耻骨联合长轴夹角(ANGLE OF THE OCCIPITOPOSTERIOR DIAMETER,AOP)明显低于对照组,会阴最短间隔(Head-Perineum Distance,HPD)明显高于对照组;观察组患者不良妊娠结局发生率明显高于对照组(P均<0.05)。发生不良妊娠结局与未发生者超声参数指标:胎方位非枕前位、AOP、HPD存在统计学差异;将上述指标纳入Logistic回归模型,通过回归系数得出两项联合的数值,进一步ROC曲线显示,两项联合预测AUC为0.961,敏感度、特异度为97.8%、86.0%。结论:超声对产程超过2H的产妇母婴不良妊娠结局预测具有较高的预测价值。
基金the National Key Research and Development Program of China under Grant No.2016YFC1400200in part by the Basic Research Program of Science and Technology of Shenzhen,China under Grant No.JCYJ20190809161805508+2 种基金in part by the Fundamental Research Funds for the Central Universities of China under Grant No.20720200092in part by the Xiamen University’s Honors Program for Undergraduates in Marine Sciences under Grant No.22320152201106in part by the National Natural Science Foundation of China under Grants No.41476026,41976178 and 61801139。
文摘Routing plays a critical role in data transmission for underwater acoustic sensor networks(UWSNs)in the internet of underwater things(IoUT).Traditional routing methods suffer from high end-toend delay,limited bandwidth,and high energy consumption.With the development of artificial intelligence and machine learning algorithms,many researchers apply these new methods to improve the quality of routing.In this paper,we propose a Qlearning-based multi-hop cooperative routing protocol(QMCR)for UWSNs.Our protocol can automatically choose nodes with the maximum Q-value as forwarders based on distance information.Moreover,we combine cooperative communications with Q-learning algorithm to reduce network energy consumption and improve communication efficiency.Experimental results show that the running time of the QMCR is less than one-tenth of that of the artificial fish-swarm algorithm(AFSA),while the routing energy consumption is kept at the same level.Due to the extremely fast speed of the algorithm,the QMCR is a promising method of routing design for UWSNs,especially for the case that it suffers from the extreme dynamic underwater acoustic channels in the real ocean environment.
文摘Leaf inclination,a component of crop architecture,influences photosynthetic efficiency and planting density.Various factors,particularly the phytohormones auxin and brassinosteroids(BRs),function in regulating lamina joint bending,and understanding of the genetic control of leaf inclination will help to elucidate the relevant regulatory network.Screening a rice T-DNA insertion population revealed a mutant that was insensitive to auxin and displayed an enlarged leaf angle due to increased cell length on the adaxial side of the lamina joint.Genetic analysis revealed that the increased leaf inclination was caused by T-DNA insertion in the promoter region of OsIAA6,resulting in elevated OsIAA6 expression.Further study showed that OsIAA6 interacts with OsARF1 to suppress auxin signaling and regulates leaf inclination.OsIAA6 mediates the BR effects on lamina joint development,and OsBZR1,the key transcription factor in BR signaling,binds directly to the promoter of OsIAA6 to stimulate its transcription.These results indicate the roles of the OsIAA6-OsARF1 module in regulating rice leaf inclination and suggest the synergistic effects of the phytohormones auxin and BR.
基金Supported by the High-technology Program of Jiangsu Province(BG2007312)
文摘[ Objective ] This study aimed to explore the ways of using SSR technology to construct the fingerprinting maps of the loquat. [ Method ] Fingerprinting patterns of the SSR markers for 33 loquat varieties in national loquat germplasm resource garden were constructed by specifically amplifying palymorphism from 7 pairs of primers screened from 51 pairs of primers of the relatives Mains and Pyrus. [ Result ] The results showed that the uses of 7 primers, namely, Hi01d05F, Hil2iO4F, CH02B10F, Hi03a03, Hi03e04, Hi04a05 and Hi02c07 could distinguish 33 loquat germplasms from one another completely. [ Conclusion] This study provides an essential criterion for classification and identification of the loquat resources.
文摘Objective:To investigate the effect of different blood glucose levels on viscera injury, oxidative stress response and Wnt5a inflammatory pathway in children with sepsis.Methods:70 children with sepsis treated in our hospital between January 2014 and December 2015 were retrospectively collected and divided into the sepsis group A (blood glucose>10 mmol/L) (n=29) and the sepsis group B (blood glucose ≤10 mmol/L) (n=41) according to the different blood glucose levels, and 50 healthy children who accepted vaccination and were with normal blood glucose levels in our hospital during the same period were selected as healthy control group. The day after admission, RIA method was used to determine liver function indexes;automatic biochemical analyzer was used to determine oxidative stress indexes;enzyme-linked immunosorbent assay (ELISA) was used to detect Wnt5a inflammatory pathway index levels.Results: Liver function indexes total bilirubin (TBIL), alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels of sepsis group A were higher than those of sepsis group B and healthy control group (P<0.05);oxidative stress indexes advanced protein oxidation products (AOPPs), lipid hydrogen peroxide (LHP), reactive oxygen species (ROS), and malondialdehyde (MDA) levels were higher than those of sepsis group B and healthy control group while glutathione peroxidase (GSH-Px) level was lower than that of sepsis group B and healthy control group (P<0.05);serum Wnt5a inflammatory pathway indexes interleukin-1β (IL-1β), interleukin-6 (IL-6), interleukin-12 (IL-12) and macrophage inflammatory protein-1β (MIP-1β) levels were higher than those of sepsis group B and healthy control group (P<0.05).Conclusions:Sepsis children with high blood glucose are with severe liver function damage as well as intense oxidative stress and inflammatory response, which are the important indexes for severe illness and poor prognosis.
