In order to understand the mechanism of the confinement bifurcation and H-mode power threshold in magnetically confined plasma,a new dynamical model of the L-H transition based on edge instability phase transition（E...In order to understand the mechanism of the confinement bifurcation and H-mode power threshold in magnetically confined plasma,a new dynamical model of the L-H transition based on edge instability phase transition（EIPT） has been developed.With the typical plasma parameters of the EAST tokamak,the self-consistent turbulence growth rate is analyzed using the simplest case of pressure-driven ballooning-type instability,which indicates that the L-H transition can be caused by the stabilization of the edge instability through EIPT.The weak E？×？B flow shear in L-mode is able to increase the ion inertia of the electrostatic motion by increasing the radial wave number of the tilted turbulence structures,which play an important role for accelerating the trigger process of EIPT rather than directly to suppress the turbulent transport.With the acceleration mechanism of E？×？B flow shear,fast L-H and H-L transitions are demonstrated under the control of the input heating power.Due to the simplified scrape-offlayer boundary condition applied,the ratio between the heating powers at the H-L and L-H transition respectively differs from the ratio by Nusselt number.The results of the modeling reveal a scaling of the power threshold of the L-H transition,P_（L-H）？∝？n^（0.76） B^（0.8） for deuterium plasma.It is found finite Larmor radius induces an isotope effect of the H-mode power threshold.展开更多
目的 评价脱氧核苷酸钠治疗初治继发性肺结核临床疗效及安全性。方法 94例初治继发性肺结核患者随机分为对照组47例与试验组47例,对照组给予标准化疗方案,3HRES/3HRE;试验组在对照组的基础上给予脱氧核苷酸钠注射液150 m L＋5%葡萄糖注...目的 评价脱氧核苷酸钠治疗初治继发性肺结核临床疗效及安全性。方法 94例初治继发性肺结核患者随机分为对照组47例与试验组47例,对照组给予标准化疗方案,3HRES/3HRE;试验组在对照组的基础上给予脱氧核苷酸钠注射液150 m L＋5%葡萄糖注射液体250 m L静脉滴注,1次/d。均以28 d为1个周期,连续治疗1周期。比较2组临床疗效、治疗前后血清糖链抗原125（CA125）、糖链抗原199（CA199）、肝肾功能以及不良反应发生情况。结果 治疗后,对照组临床总有效率为78.72%,显著低于试验组的93.62%（P〈0.05）。2组治疗后血清CA125、CA199水平均显著降低,且试验组显著小于对照组（P〈0.05）;血清ALT、AST、Cr及BUN浓度水平与治疗前相比,差异无统计学意义。对照组不良反应发生率为6.38%,试验组为10.64%,差异无统计学意义。结论 脱氧核苷酸钠治疗初治继发性肺结核的临床疗效显著,安全性高。展开更多
基金supported by National Natural Science Foundation of China under Contract Nos.11575235 and 11422546China Postdoctoral Science Foundation under Contract No.2016M602043+2 种基金the National Magnetic Confinement Fusion Science Program of China under Contract No.2015GB101002Key Research Program of Frontier Sciences,CAS,Grant No.QYZDB-SSW-SLH001K C Wong Education Foundation
文摘In order to understand the mechanism of the confinement bifurcation and H-mode power threshold in magnetically confined plasma,a new dynamical model of the L-H transition based on edge instability phase transition（EIPT） has been developed.With the typical plasma parameters of the EAST tokamak,the self-consistent turbulence growth rate is analyzed using the simplest case of pressure-driven ballooning-type instability,which indicates that the L-H transition can be caused by the stabilization of the edge instability through EIPT.The weak E？×？B flow shear in L-mode is able to increase the ion inertia of the electrostatic motion by increasing the radial wave number of the tilted turbulence structures,which play an important role for accelerating the trigger process of EIPT rather than directly to suppress the turbulent transport.With the acceleration mechanism of E？×？B flow shear,fast L-H and H-L transitions are demonstrated under the control of the input heating power.Due to the simplified scrape-offlayer boundary condition applied,the ratio between the heating powers at the H-L and L-H transition respectively differs from the ratio by Nusselt number.The results of the modeling reveal a scaling of the power threshold of the L-H transition,P_（L-H）？∝？n^（0.76） B^（0.8） for deuterium plasma.It is found finite Larmor radius induces an isotope effect of the H-mode power threshold.
文摘目的 评价脱氧核苷酸钠治疗初治继发性肺结核临床疗效及安全性。方法 94例初治继发性肺结核患者随机分为对照组47例与试验组47例,对照组给予标准化疗方案,3HRES/3HRE;试验组在对照组的基础上给予脱氧核苷酸钠注射液150 m L＋5%葡萄糖注射液体250 m L静脉滴注,1次/d。均以28 d为1个周期,连续治疗1周期。比较2组临床疗效、治疗前后血清糖链抗原125（CA125）、糖链抗原199（CA199）、肝肾功能以及不良反应发生情况。结果 治疗后,对照组临床总有效率为78.72%,显著低于试验组的93.62%（P〈0.05）。2组治疗后血清CA125、CA199水平均显著降低,且试验组显著小于对照组（P〈0.05）;血清ALT、AST、Cr及BUN浓度水平与治疗前相比,差异无统计学意义。对照组不良反应发生率为6.38%,试验组为10.64%,差异无统计学意义。结论 脱氧核苷酸钠治疗初治继发性肺结核的临床疗效显著,安全性高。
