The traditional train positioning methods suffer from inadequate accuracy and high maintenance costs,rendering them unsuitable for the development requirements of lightweight and intelligent train positioning technolo...The traditional train positioning methods suffer from inadequate accuracy and high maintenance costs,rendering them unsuitable for the development requirements of lightweight and intelligent train positioning technology.To address these restraints,the BeiDou navigation satellite system/strapdown inertial navigation system(BDS/SINS)integrated train positioning system based on an adaptive unscented Kalman filter(AUKF)is proposed.Firstly,the combined denoising algorithm(CDA)and Lagrange interpolation algorithm are introduced to preprocess the original data,effectively eliminating the influence of noise signals and abnormal measurements on the train positioning system.Secondly,the innovation theory is incorporated into the unscented Kalman filter(UKF)to derive the AUKF,which accomplishes an adaptive update of the measurement noise covariance.Finally,the positioning performance of the proposed AUKF is contrasted with that of conventional algorithms in various operation scenes.Simulation results demonstrate that the average value of error calculated by AUKF is less than 1.5 m,and the success rate of positioning touches 95.0%.Compared to Kalman filter(KF)and UKF,AUKF exhibits superior accuracy and stability in train positioning.Consequently,the proposed AUKF is well-suited for providing precise positioning services in variable operating environments for trains.展开更多
In the article“Silencing of the long non-coding RNA LINC00265 triggers autophagy and apoptosis in lung cancer by reducing protein stability of SIN3A oncogene”(Oncology Research.2024,Vol.32,No.7,pp.1185–1195.doi:10....In the article“Silencing of the long non-coding RNA LINC00265 triggers autophagy and apoptosis in lung cancer by reducing protein stability of SIN3A oncogene”(Oncology Research.2024,Vol.32,No.7,pp.1185–1195.doi:10.32604/or.2023.030771,https://www.techscience.com/or/v32n7/57163),an inadvertent error occurred during the compilation of Fig.3H.This needed corrections to ensure the accuracy and integrity of the data presented.展开更多
建立Sin-QuECh ERS Nano-超高效液相色谱串联质谱法测定坚果中吡噻菌胺酰胺类杀菌剂残留的方法。采用电喷雾正离子模式下多反应监测(MRM)模式进行检测,外标法定量。结果表明,吡噻菌胺在质量浓度10~500μg/L内具有良好的线性关系,R2>0...建立Sin-QuECh ERS Nano-超高效液相色谱串联质谱法测定坚果中吡噻菌胺酰胺类杀菌剂残留的方法。采用电喷雾正离子模式下多反应监测(MRM)模式进行检测,外标法定量。结果表明,吡噻菌胺在质量浓度10~500μg/L内具有良好的线性关系,R2>0.999。在0.25,0.50,2.50μg/kg 3个加标水平下,回收率为92.3%~117.0%,RSD<4.0%(n=6),定量限(LOQ)0.25μg/kg,使用该方法对进口坚果、超市售坚果和小摊贩售坚果进行检测,发现阳性样品检出率为1.0%,小摊贩售样阳性样品检出率高达4.0%。该方法前处理快速简单、灵敏度和准确度高,可满足坚果中吡噻菌胺残留检测的要求。展开更多
基金supported by Project Fund of China National Railway Group Co.,Ltd.(No.N2022G012)Natonal Natural Science Foundation of China(No.61661027)。
文摘The traditional train positioning methods suffer from inadequate accuracy and high maintenance costs,rendering them unsuitable for the development requirements of lightweight and intelligent train positioning technology.To address these restraints,the BeiDou navigation satellite system/strapdown inertial navigation system(BDS/SINS)integrated train positioning system based on an adaptive unscented Kalman filter(AUKF)is proposed.Firstly,the combined denoising algorithm(CDA)and Lagrange interpolation algorithm are introduced to preprocess the original data,effectively eliminating the influence of noise signals and abnormal measurements on the train positioning system.Secondly,the innovation theory is incorporated into the unscented Kalman filter(UKF)to derive the AUKF,which accomplishes an adaptive update of the measurement noise covariance.Finally,the positioning performance of the proposed AUKF is contrasted with that of conventional algorithms in various operation scenes.Simulation results demonstrate that the average value of error calculated by AUKF is less than 1.5 m,and the success rate of positioning touches 95.0%.Compared to Kalman filter(KF)and UKF,AUKF exhibits superior accuracy and stability in train positioning.Consequently,the proposed AUKF is well-suited for providing precise positioning services in variable operating environments for trains.
文摘In the article“Silencing of the long non-coding RNA LINC00265 triggers autophagy and apoptosis in lung cancer by reducing protein stability of SIN3A oncogene”(Oncology Research.2024,Vol.32,No.7,pp.1185–1195.doi:10.32604/or.2023.030771,https://www.techscience.com/or/v32n7/57163),an inadvertent error occurred during the compilation of Fig.3H.This needed corrections to ensure the accuracy and integrity of the data presented.
文摘建立Sin-QuECh ERS Nano-超高效液相色谱串联质谱法测定坚果中吡噻菌胺酰胺类杀菌剂残留的方法。采用电喷雾正离子模式下多反应监测(MRM)模式进行检测,外标法定量。结果表明,吡噻菌胺在质量浓度10~500μg/L内具有良好的线性关系,R2>0.999。在0.25,0.50,2.50μg/kg 3个加标水平下,回收率为92.3%~117.0%,RSD<4.0%(n=6),定量限(LOQ)0.25μg/kg,使用该方法对进口坚果、超市售坚果和小摊贩售坚果进行检测,发现阳性样品检出率为1.0%,小摊贩售样阳性样品检出率高达4.0%。该方法前处理快速简单、灵敏度和准确度高,可满足坚果中吡噻菌胺残留检测的要求。
