A quasi-coherent(QC)mode was observed in the core region of low-density ohmic plasmas in Sino-UNIted Spherical Tokamak.In experiments on the QC mode,two sets of moveable Langmuir probes(LPs)were used to measure the lo...A quasi-coherent(QC)mode was observed in the core region of low-density ohmic plasmas in Sino-UNIted Spherical Tokamak.In experiments on the QC mode,two sets of moveable Langmuir probes(LPs)were used to measure the local parameters including floating potential,electron temperature,electron density,and so on,as well as their profiles.To monitor the magnetohydrodynamic activities,a Mirnov probe was used to measure the poloidal magnetic fluctuation.The QC mode can be seen in the spectra of floating potential,but there is no similar peak in the spectra of magnetic fluctuation.Thus,the QC mode is probably electrostatic.By analyzing the electrostatic potential fluctuations from the LPs,the features of the QC mode including frequency,wavenumber,propagation direction,and dependence on collisionality are identified,which are consistent with the characteristics of dissipative trapped electron mode.展开更多
探讨术前给予地佐辛对全身麻醉下腹腔镜胆囊切除术(LC)患者的影响。选取拟行LC的男性患者94例,根据入院顺序单双号分为地佐辛组和对照组,各47例。地佐辛组于手术开始时静注地佐辛10mg,对照组给予2 m L生理盐水。两组患者均采用丙泊酚、...探讨术前给予地佐辛对全身麻醉下腹腔镜胆囊切除术(LC)患者的影响。选取拟行LC的男性患者94例,根据入院顺序单双号分为地佐辛组和对照组,各47例。地佐辛组于手术开始时静注地佐辛10mg,对照组给予2 m L生理盐水。两组患者均采用丙泊酚、芬太尼、顺阿曲库铵和七氟烷维持麻醉。地佐辛组和对照组的手术时间、苏醒时间、拔管时间差异无统计学意义(P>0.05);地佐辛组疼痛评分、躁动发生率、各时间点导尿管相关性膀胱刺激征(CRBD)发生率均显著低于对照组(均P<0.05)。LC术前预防性给予地佐辛可显著降低患者术后疼痛、躁动及CRBD发生率。展开更多
基金National Natural Science Foundation of China(Nos.11827810,11875177,12105189 and 12075155)International Atomic Energy Agency Research(No.22733)National Magnetic Confinement Fusion Program of China(No.2019YFE03010001)。
文摘A quasi-coherent(QC)mode was observed in the core region of low-density ohmic plasmas in Sino-UNIted Spherical Tokamak.In experiments on the QC mode,two sets of moveable Langmuir probes(LPs)were used to measure the local parameters including floating potential,electron temperature,electron density,and so on,as well as their profiles.To monitor the magnetohydrodynamic activities,a Mirnov probe was used to measure the poloidal magnetic fluctuation.The QC mode can be seen in the spectra of floating potential,but there is no similar peak in the spectra of magnetic fluctuation.Thus,the QC mode is probably electrostatic.By analyzing the electrostatic potential fluctuations from the LPs,the features of the QC mode including frequency,wavenumber,propagation direction,and dependence on collisionality are identified,which are consistent with the characteristics of dissipative trapped electron mode.
文摘探讨术前给予地佐辛对全身麻醉下腹腔镜胆囊切除术(LC)患者的影响。选取拟行LC的男性患者94例,根据入院顺序单双号分为地佐辛组和对照组,各47例。地佐辛组于手术开始时静注地佐辛10mg,对照组给予2 m L生理盐水。两组患者均采用丙泊酚、芬太尼、顺阿曲库铵和七氟烷维持麻醉。地佐辛组和对照组的手术时间、苏醒时间、拔管时间差异无统计学意义(P>0.05);地佐辛组疼痛评分、躁动发生率、各时间点导尿管相关性膀胱刺激征(CRBD)发生率均显著低于对照组(均P<0.05)。LC术前预防性给予地佐辛可显著降低患者术后疼痛、躁动及CRBD发生率。
