加速康复外科(enhanced recovery after surgery,ERAS)是指采用一系列具有循证医学证据的围手术期优化措施,以减少手术创伤应激反应和并发症。ERAS理念在成人中的应用已较为成熟,但在儿童这一特殊人群中应用相对较少。由于儿童心脏外科...加速康复外科(enhanced recovery after surgery,ERAS)是指采用一系列具有循证医学证据的围手术期优化措施,以减少手术创伤应激反应和并发症。ERAS理念在成人中的应用已较为成熟,但在儿童这一特殊人群中应用相对较少。由于儿童心脏外科手术具有风险高、精细度高、操作复杂等特点,此类病人往往面临更为复杂的外科应激。本文综述了ERAS理念在儿童心脏外科围手术期的应用现状,为ERAS理念在儿童心脏外科的更深入应用提供参考。展开更多
Deep transcranial magnetic stimulation(DTMS)is a new non-invasive neuromodulation technique based on repetitive transcranial magnetic stimulation technology.The new H-coil has significant advantages in the treatment a...Deep transcranial magnetic stimulation(DTMS)is a new non-invasive neuromodulation technique based on repetitive transcranial magnetic stimulation technology.The new H-coil has significant advantages in the treatment and mechanism research of psychiatric and neurological disorders.This is due to its deep stimulation site and wide range of action.This paper reviews the clinical progress of DTMS in psychiatric and neurological disorders such as Parkinson’s disease,Alzheimer’s disease,post-stroke motor dysfunction,aphasia,and other neurological disorders,as well as anxiety,depression,and schizophrenia.展开更多
模型预测控制(MPC)技术近年来在高动态性能电机驱动系统中应用广泛。为了克服传统MPC技术中有限控制集(FCS)造成的稳态电流脉动问题,提出了一种基于混合控制集(MCS)预测控制的永磁同步电机(PMSM)电流脉动抑制方法。分析建立PMSM预测控...模型预测控制(MPC)技术近年来在高动态性能电机驱动系统中应用广泛。为了克服传统MPC技术中有限控制集(FCS)造成的稳态电流脉动问题,提出了一种基于混合控制集(MCS)预测控制的永磁同步电机(PMSM)电流脉动抑制方法。分析建立PMSM预测控制系统离散数学模型,并分析电压矢量精度与电流脉动之间的关联性;在此基础上,MCS-MPC将电压源型逆变器有限的有效电压矢量数,扩展为多个以占空比形式存在的虚拟电压矢量,并基于上述虚拟电压矢量完成MPC优化问题在线求解;此外,考虑到MCS-MPC系统的参数敏感性问题,对MCS-MPC系统反馈噪声问题进行分析讨论。最后,搭建双15 k W PMSM对拖样机测试平台进行试验分析,分析内容包括MCS方法动态跟踪特性、电流脉动稳态效果。试验结果表明所提出的MCS-MPC方法在保留了传统预测控制技术高动态响应的基础上,可有效降低PMSM稳态电流脉动幅度和运行噪声。展开更多
The separation of arsenic and antimony from dust with high content of arsenic was conducted via a selective sulfidation roasting process.The factors such as roasting temperature,roasting time,sulfur content and nitrog...The separation of arsenic and antimony from dust with high content of arsenic was conducted via a selective sulfidation roasting process.The factors such as roasting temperature,roasting time,sulfur content and nitrogen flow rate were investigated using XRD,EPMA and SEM-EDS.In a certain range,the sulfur addition has an active effect on the arsenic volatilization because the solid solution phase（（Sb,As）2O3）in the dust can be destroyed after the Sb component in it being vulcanized to Sb2S3 and this generated As2O3 continues to volatile.In addition,an amorphization reaction between As2O（3 ）and Sb2O（3 ）is hindered through the sulfidation of Sb2O3,which is also beneficial to increasing arsenic volatilization rate.The results show that volatilization rates of arsenic and antimony reach 95.36%and only 9.07%,respectively,under the optimum condition of roasting temperature of 350℃,roasting time of 90 min,sulfur content of 22%and N2 flow rate of 70 m L/min.In addition,the antimony in the residues can be reclaimed through a reverberatory process.展开更多
文摘加速康复外科(enhanced recovery after surgery,ERAS)是指采用一系列具有循证医学证据的围手术期优化措施,以减少手术创伤应激反应和并发症。ERAS理念在成人中的应用已较为成熟,但在儿童这一特殊人群中应用相对较少。由于儿童心脏外科手术具有风险高、精细度高、操作复杂等特点,此类病人往往面临更为复杂的外科应激。本文综述了ERAS理念在儿童心脏外科围手术期的应用现状,为ERAS理念在儿童心脏外科的更深入应用提供参考。
文摘Deep transcranial magnetic stimulation(DTMS)is a new non-invasive neuromodulation technique based on repetitive transcranial magnetic stimulation technology.The new H-coil has significant advantages in the treatment and mechanism research of psychiatric and neurological disorders.This is due to its deep stimulation site and wide range of action.This paper reviews the clinical progress of DTMS in psychiatric and neurological disorders such as Parkinson’s disease,Alzheimer’s disease,post-stroke motor dysfunction,aphasia,and other neurological disorders,as well as anxiety,depression,and schizophrenia.
文摘模型预测控制(MPC)技术近年来在高动态性能电机驱动系统中应用广泛。为了克服传统MPC技术中有限控制集(FCS)造成的稳态电流脉动问题,提出了一种基于混合控制集(MCS)预测控制的永磁同步电机(PMSM)电流脉动抑制方法。分析建立PMSM预测控制系统离散数学模型,并分析电压矢量精度与电流脉动之间的关联性;在此基础上,MCS-MPC将电压源型逆变器有限的有效电压矢量数,扩展为多个以占空比形式存在的虚拟电压矢量,并基于上述虚拟电压矢量完成MPC优化问题在线求解;此外,考虑到MCS-MPC系统的参数敏感性问题,对MCS-MPC系统反馈噪声问题进行分析讨论。最后,搭建双15 k W PMSM对拖样机测试平台进行试验分析,分析内容包括MCS方法动态跟踪特性、电流脉动稳态效果。试验结果表明所提出的MCS-MPC方法在保留了传统预测控制技术高动态响应的基础上,可有效降低PMSM稳态电流脉动幅度和运行噪声。
基金Project(51564034)supported by the National Natural Science Fund for Distinguished Regional Scholars,ChinaProject(2015HA019)supported by the Scientific and Technological Leading Talent Program in Yunnan Province,China
文摘The separation of arsenic and antimony from dust with high content of arsenic was conducted via a selective sulfidation roasting process.The factors such as roasting temperature,roasting time,sulfur content and nitrogen flow rate were investigated using XRD,EPMA and SEM-EDS.In a certain range,the sulfur addition has an active effect on the arsenic volatilization because the solid solution phase（（Sb,As）2O3）in the dust can be destroyed after the Sb component in it being vulcanized to Sb2S3 and this generated As2O3 continues to volatile.In addition,an amorphization reaction between As2O（3 ）and Sb2O（3 ）is hindered through the sulfidation of Sb2O3,which is also beneficial to increasing arsenic volatilization rate.The results show that volatilization rates of arsenic and antimony reach 95.36%and only 9.07%,respectively,under the optimum condition of roasting temperature of 350℃,roasting time of 90 min,sulfur content of 22%and N2 flow rate of 70 m L/min.In addition,the antimony in the residues can be reclaimed through a reverberatory process.
