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卢瑟福散射虚拟仿真实验设计与教学实践 被引量:2
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作者 田立朝 张湘 +3 位作者 姜静 杨晓虎 吕中良 赵子甲 《实验科学与技术》 2024年第1期68-75,共8页
卢瑟福散射实验是核物理学发展史中的经典实验之一。基于实验放射源使用安全的考虑,国内外高校多以理论讲授为主,少有实验教学,限制了学生对原子核微观结构及射线与物质的微观相互作用的深入理解。针对以上问题,开发了基于Unity3D的卢... 卢瑟福散射实验是核物理学发展史中的经典实验之一。基于实验放射源使用安全的考虑,国内外高校多以理论讲授为主,少有实验教学,限制了学生对原子核微观结构及射线与物质的微观相互作用的深入理解。针对以上问题,开发了基于Unity3D的卢瑟福散射虚拟仿真实验,真实再现实验场景,通过蒙特卡罗模拟保证了实验数据的真实可靠性。实验内容涵盖半导体α谱仪的使用、卢瑟福微分散射截面公式的验证、卢瑟福背散射在材料分析中的应用等内容。该虚拟仿真实验的开发为高校近代物理实验、核物理实验、材料表征等专业实验教学提供了参考,丰富了核物理实验教学的内容。 展开更多
关键词 卢瑟福散射 卢瑟福背散射 虚拟仿真实验 实验教学
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球囊扩张与自膨式支架治疗下肢不同Rutherford分级动脉硬化闭塞症疗效对比 被引量:9
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作者 李俊霞 周永刚 +2 位作者 程金生 孙建民 魏明岩 《贵州医药》 CAS 2018年第7期845-847,共3页
目的比较球囊扩张与自膨式支架治疗下肢不同Rutherford分级动脉硬化闭塞症的疗效。方法选择股—腘动脉硬化闭塞症患者150例,随机分为球囊组和自膨扩张组,分别行球囊扩张术和自膨式镍钛支架治疗,比较两组疗效、ABI变化情况及术后随访情... 目的比较球囊扩张与自膨式支架治疗下肢不同Rutherford分级动脉硬化闭塞症的疗效。方法选择股—腘动脉硬化闭塞症患者150例,随机分为球囊组和自膨扩张组,分别行球囊扩张术和自膨式镍钛支架治疗,比较两组疗效、ABI变化情况及术后随访情况。结果自膨支架组的总有效率显著高于球囊组(P<0.05);两组的Rutherford分级均显著改善,两组间Rutherford分级情况差异显著(P<0.05);两组的ABI均显著改善,其中自膨支架组改善程度更好(P<0.05),在Ⅰ2~Ⅰ3期患者的治疗中,两组ABI无明显差异(P>0.05),仅在术后12个月,自膨支架组ABI指数明显高于球囊组(P<0.05);术后12个月,两组患者截肢率和死亡率无差异,而自膨支架组的再狭窄或闭塞、再手术率显著低于球囊组(P<0.05)。结论球囊扩张和自膨式支架对下肢不同Rutherford分级动脉硬化闭塞症均有较好的治疗效果,自膨式支架的近远期疗效更好,球囊扩张更适合Ⅰ2~Ⅰ3期患者的治疗。 展开更多
关键词 球囊扩张 自膨式支架 rutherford分级 下肢动脉硬化闭塞症 疗效
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两种球囊在下肢动脉硬化闭塞症围术期中应用的效果比较
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作者 林芳明 薛海龙 +2 位作者 柯俊丞 张辛 林明冠 《南昌大学学报(医学版)》 2024年第3期72-77,103,共7页
目的 探讨不同球囊在下肢动脉硬化闭塞症(ASO)治疗中的应用价值。方法 选取2020年6月至2022年6月行血管介入手术的106例ASO患者为研究对象,采用电脑随机法分为观察组和对照组,各53例。观察组术中采用药物涂层球囊,对照组术中采用普通球... 目的 探讨不同球囊在下肢动脉硬化闭塞症(ASO)治疗中的应用价值。方法 选取2020年6月至2022年6月行血管介入手术的106例ASO患者为研究对象,采用电脑随机法分为观察组和对照组,各53例。观察组术中采用药物涂层球囊,对照组术中采用普通球囊。比较2组临床疗效、手术前后氧化应激指标[超氧化物歧化酶(SOD)、硫氧还蛋白(TRX)、髓过氧化物酶(MPO)、丙二醛(MDA)]、血栓前状态指标[血栓前体蛋白(TpP)、血管假血友病因子(vWF)、总同型半胱氨酸(tHcy)]、踝肱指数(ABI)、靶动脉血管内径、Rutherford分级及并发症发生情况。结果 观察组总有效率(92.45%)明显高于对照组(77.36%)(P<0.05);术后3、7 d观察组SOD、TRX水平高于对照组,MPO、MDA水平低于对照组(P<0.05);术后3、7 d观察组TpP、vWF、tHcy水平低于对照组(P<0.05);术后3、7 d观察组ABI、靶动脉血管内径高于对照组(P<0.05);术后12个月观察组Rutherford分级分布优于对照组(P<0.05);2组并发症总发生率比较差异无统计学意义(P>0.05)。结论 两种球囊行血管介入手术治疗ASO患者,均具有较好的安全性,但药物涂层球囊能增强疗效,减轻氧化应激,改善血栓前状态,恢复患者血流,改善患者预后。 展开更多
关键词 下肢动脉硬化闭塞症 药物涂层球囊 血管介入手术 血栓前状态 氧化应激反应 rutherford分级 踝肱指数 并发症
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Effects of counter-current driven by electron cyclotron waves on neoclassical tearing mode suppression
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作者 高钦 郑平卫 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第5期501-509,共9页
Through theoretical analysis,we construct a physical model that includes the influence of counter-external driven current opposite to the plasma current direction in the neoclassical tearing mode(NTM).The equation is ... Through theoretical analysis,we construct a physical model that includes the influence of counter-external driven current opposite to the plasma current direction in the neoclassical tearing mode(NTM).The equation is used with this model to obtain the modified Rutherford equation with co-current and counter-current contributions.Consistent with the reported experimental results,numerical simulations have shown that the localized counter external current can only partially suppress NTM when it is far from the resonant magnetic surface.Under some circumstances,the Ohkawa mechanism dominated current drive(OKCD)by electron cyclotron waves can concurrently create both co-current and counter-current.In this instance,the minimal electron cyclotron wave power that suppresses a particular NTM was calculated by the Rutherford equation.The result is marginally less than when taking co-current alone into consideration.As a result,to suppress NTM using OKCD,one only needs to align the co-current with a greater OKCD peak well with the resonant magnetic surface.The effect of its lower counter-current does not need to be considered because the location of the counter-current deviates greatly from the resonant magnetic surface. 展开更多
关键词 driven current neoclassical tearing mode modified rutherford equation electron cyclotron waves
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Riemann–Hilbert problem for the defocusing Lakshmanan–Porsezian–Daniel equation with fully asymmetric nonzero boundary conditions
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作者 Jianying Ji Xiyang Xie 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第9期208-215,共8页
The Riemann–Hilbert approach is demonstrated to investigate the defocusing Lakshmanan–Porsezian–Daniel equation under fully asymmetric nonzero boundary conditions.In contrast to the symmetry case,this paper focuses... The Riemann–Hilbert approach is demonstrated to investigate the defocusing Lakshmanan–Porsezian–Daniel equation under fully asymmetric nonzero boundary conditions.In contrast to the symmetry case,this paper focuses on the branch points related to the scattering problem rather than using the Riemann surfaces.For the direct problem,we analyze the Jost solution of lax pairs and some properties of scattering matrix,including two kinds of symmetries.The inverse problem at branch points can be presented,corresponding to the associated Riemann–Hilbert.Moreover,we investigate the time evolution problem and estimate the value of solving the solutions by Jost function.For the inverse problem,we construct it as a Riemann–Hilbert problem and formulate the reconstruction formula for the defocusing Lakshmanan–Porsezian–Daniel equation.The solutions of the Riemann–Hilbert problem can be constructed by estimating the solutions.Finally,we work out the solutions under fully asymmetric nonzero boundary conditions precisely via utilizing the Sokhotski–Plemelj formula and the square of the negative column transformation with the assistance of Riemann surfaces.These results are valuable for understanding physical phenomena and developing further applications of optical problems. 展开更多
关键词 Riemann-Hilbert problem defocusing Lakshmanan-Porsezian-Daniel equation inverse scatter-ing transform asymmetric nonzero boundary conditions
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计算机模拟辅助教学在分析力学中的应用
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作者 何红斌 郑华 +2 位作者 张文超 王新刚 朱励霖 《大学物理》 2024年第5期33-38,共6页
计算机模拟辅助教学能有效弥补传统教学的不足,二者的有机结合能提高学生对有些难懂知识点的理解,从而提高学生的学习兴趣与课堂的效能.本文以分析力学中的卢瑟福散射、二体碰撞两个典型问题介绍笔者在应用计算机模拟辅助分析力学教学... 计算机模拟辅助教学能有效弥补传统教学的不足,二者的有机结合能提高学生对有些难懂知识点的理解,从而提高学生的学习兴趣与课堂的效能.本文以分析力学中的卢瑟福散射、二体碰撞两个典型问题介绍笔者在应用计算机模拟辅助分析力学教学中的一些尝试. 展开更多
关键词 有心力场 卢瑟福散射 二体碰撞 质心系 计算机辅助教学
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Rutherford散射公式及α粒子散射径迹是双曲线一分支的简明推证
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作者 王文赜 《西北师范大学学报(自然科学版)》 CAS 2002年第1期100-102,共3页
用经典物理学知识 ,简明推导出了Rutherford公式 。
关键词 rutherford散射公式 α粒子散射径迹 双曲线 经典物理学 原子结构
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小角度Rutherford散射模拟与研究 被引量:1
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作者 周伟 李聪 李佳惠 《实验技术与管理》 CAS 北大核心 2017年第10期33-36,共4页
以单靶核Rutherford散射的计算机模拟程序为基础,编写了多靶核Rutherford散射的模拟程序。应用多靶核模拟程序直观地研究了多次散射、靶核遮掩、电子屏蔽等影响Rutherford散射公式适用性的因素,更好地理解和分析了小角度Rutherford散射... 以单靶核Rutherford散射的计算机模拟程序为基础,编写了多靶核Rutherford散射的模拟程序。应用多靶核模拟程序直观地研究了多次散射、靶核遮掩、电子屏蔽等影响Rutherford散射公式适用性的因素,更好地理解和分析了小角度Rutherford散射的物理图像,并通过对不同因素的对比分析,找出了影响小角度Rutherford散射的主要因素。 展开更多
关键词 rutherford散射 计算机模拟 多次散射 靶核遮掩 电子屏蔽
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Rutherford散射公式的理论研究
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作者 孙瑞 汤玉泉 +1 位作者 郭美灵 张穗萌 《皖西学院学报》 2008年第2期154-156,共3页
讨论和比较了用不同理论方法导出卢瑟福散射公式;分析了低能电子入射单电离氦原子(e,2e)反应中的卢瑟福散射;尤其是通过卢瑟福公式给出了有效核电荷的表达式。
关键词 卢瑟福散射 (e 2e)反应 有效核电荷
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Characterization of tetragonal distortion in a thick Al_(0.2)Ga_(0.8)N epilayer with an AlN interlayer by Rutherford backscattering/channeling
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作者 王欢 姚淑德 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第9期354-357,共4页
An Al0.2Ga0.8N/AlN/Al0.2Ga0.8N heterostructure was grown by metalorganic chemical vapor deposition on a sapphire (0001) substrate with a thick (〉 1 μm) GaN intermediate layer. The Al composition was determined b... An Al0.2Ga0.8N/AlN/Al0.2Ga0.8N heterostructure was grown by metalorganic chemical vapor deposition on a sapphire (0001) substrate with a thick (〉 1 μm) GaN intermediate layer. The Al composition was determined by Rutherford backscattering (RBS). Using the channeling scan around an off-normal [1213] axis in the (1010) plane of the Al0.2Ga0.8N layer, the tetragonal distortion eT, which is caused by the elastic strain in the epilayer, is investigated. The results show that eT in the high-quality Al0.2Ga0.8N layer is dramatically released by the AIN interlayer from 0.66% to 0.27%. 展开更多
关键词 ALGAN rutherford backscattering/channeling elastic strain
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Study of depth-dependent tetragonal distortion of quaternary AlInGaN epilayer by Rutherford backscattering/channeling
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作者 G.Husnain 陈田祥 +1 位作者 法涛 姚淑德 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第8期563-566,共4页
A 240-nm thick Al0.4In0.02Ga0.58N layer is grown by metal organic chemical vapour deposition, with an over 1-μm thick GaN layer used as a buffer layer on a substrate of sapphire (0001). Rutherford backscattering an... A 240-nm thick Al0.4In0.02Ga0.58N layer is grown by metal organic chemical vapour deposition, with an over 1-μm thick GaN layer used as a buffer layer on a substrate of sapphire (0001). Rutherford backscattering and channeling are used to characterize the microstructure of AlInGaN. The results show a good crystalline quality of AIInGaN (χmin = 1.5%) with GaN buffer layer. The channeling angular scan around an off-normal {1213} axis in the {1010} plane of the AlInGaN layer is used to determine tetragonal distortion eT, which is caused by the elastic strain in the AIInGaN. The resulting AlInGaN is subjected to an elastic strain at interracial layer, and the strain decreases gradually towards the near-surface layer. It is expected that an epitaxial AlInGaN thin film with a thickness of 850 nm will be fully relaxed (^eT = 0). 展开更多
关键词 Ⅲ-Ⅴ semiconductors rutherford backscattering and channeling tetragonal distortion
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Dislocation and Elastic Strain in an InN Film Characterized by Synchrotron Radiation X-Ray Diffraction and Rutherford Backscattering/Channeling
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作者 CHENG Feng-Feng FA Tao +1 位作者 WANG Xin-Qiang YAO Shu-De 《Chinese Physics Letters》 SCIE CAS CSCD 2012年第2期148-151,共4页
Dislocation information and strain-related tetragonal distortion as well as crystalline qualities of a 2-μm-thick InN film grown by molecular beam epitaxy (MBE) are characterized by Rutherford backscattering/channeli... Dislocation information and strain-related tetragonal distortion as well as crystalline qualities of a 2-μm-thick InN film grown by molecular beam epitaxy (MBE) are characterized by Rutherford backscattering/channeling (RBS/C) and synchrotron radiation x-ray diffraction (SR-XRD).The minimum yield xmin=2.5% deduced from the RBS/C results indicates a fairly good crystalline quality.From the SR-XRD results,we obtain the values of the screw and edge densities to be ρscrew =7.0027 X 10^(9) and ρedge =8.6115 × 10^(9) cm-2,respectively.The tetragonal distortion of the sample is found to be -0.27 % by angular scans,which is close to the -0.28 % derived by SR-XRD.The value of |e(⊥)/e‖| =0.6742 implies that the InN layer is much stiffer along the a axis than that along the c axis,where e‖ is the parallel elastic strain,and e⊥ is the perpendicular elastic strain.Photoluminescence results reveal a main peak of 0.653eV with the linewidth of 60meV,additional shoulder band could be due to impurities and related defects. 展开更多
关键词 distortion CRYSTALLINE rutherford
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Anomalous Rutherford Scattering Solved Magnetically
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作者 Bernard Schaeffer 《World Journal of Nuclear Science and Technology》 2016年第2期96-102,共7页
After one century of nuclear physics, the anomalous Rutherford scattering remains a puzzle: its underlying fundamental laws are still missing. The only presently recognized electromagnetic interaction in a nucleus is ... After one century of nuclear physics, the anomalous Rutherford scattering remains a puzzle: its underlying fundamental laws are still missing. The only presently recognized electromagnetic interaction in a nucleus is the so-called Coulomb electric force, in 1/r, only positive thus repulsive in official nuclear physics, explaining the Rutherford scattering at low kinetic energy of the impacting alpha particles. At high kinetic energy the Rutherford scattering formula doesn’t work, thus called “anomalous scattering”. I have discovered that, to solve the problem, it needs only to replace, at high kinetic energy, the Coulomb repulsive electric potential in 1/r, by the also repulsive magnetic Poisson potential in 1/r<sup>3</sup>. In log-log coordinates, one observes two straight lines of slopes, respectively −2 and −6. They correspond with the −1 and −3 exponents of the only repulsive electric and magnetic interactions, multiplied by 2 due to the cross-sections. Both Rutherford (normal and anomalous) scattering have been calculated electromagnetically. No attractive force needed. 展开更多
关键词 Strong Force Nuclear Physics rutherford Scattering Electric Scattering Magnetic Scattering Anomalous Scattering Nuclear Scattering
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Quantum Mechanical Approach for Rutherford Scattering and Nuclear Scattering with Born Approximation
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作者 Saleem Iqbal Farhana Sarwar Syed Mohsin Raza 《World Journal of Nuclear Science and Technology》 2016年第1期71-78,共8页
Rutherford classical scattering theory, as its quantum mechanical analogue, is modified for scattering cross-section and the impact parameter by using quantum mechanical momentum, (de Broglie hypothesis), energy relat... Rutherford classical scattering theory, as its quantum mechanical analogue, is modified for scattering cross-section and the impact parameter by using quantum mechanical momentum, (de Broglie hypothesis), energy relationship for matter oscillator (Einstein’s oscillator) and quantum mechanical wave vectors, and , respectively. It is observed that the quantum mechanical scattering cross-section and the impact parameter depended on inverse square law of quantum action (Planck’s constant). Born approximation is revisited for quantum mechanical scattering. Using Bessel and Neumann asymptotic functions and response of nuclear surface potential barrier, born approximations were modified. The coulombic fields inside the nucleus of the atom are studied for reflection and transmission with corresponding wave vectors, phase shifts and eigenfunctions Bulk quantum mechanical tunneling and reflection scattering, both for ruptured and unruptured nucleus of the atom, are deciphered with corresponding wave vectors, phase shifts and eigenfunction. Similar calculation ware accomplished for quantum surface tunneling and reflection scattering with corresponding wave vectors, phase shifts and eigenfunctions. Such diverse quantum mechanical scattering cross-section with corresponding wave vectors for tunneling and reflection, phase shifts and eigenfunctions will pave a new dimension to understanding the behavior of exchange fields in the nucleus of the atom with insides layers both ruptured and unruptured. Phase shifts, δ<sub>l</sub> for each of the energy profile (partial) will be different and indeed their corresponding wave vectors for exchange energy eigenvalues. 展开更多
关键词 rutherford Classical Scattering Theory Scattering Cross Section Impact Parameter Born Approximation Ruptured and Unruptured Nucleus
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X-Rite Pantone联手Rutherford推出闭环控制系统 强强联合,打造最强阵线,助印刷企业实现更高盈利
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《广东印刷》 2016年第5期68-69,共2页
近年来,国内外印刷设备更新换代的速度越来越快,印刷设备整体朝着性能更优异、自动化水平更高、色彩控制更精良的方向发展。与此同时,一些思维超前、资金富足的大型印刷企业相继引进新型高效的印刷机,取代原有的老旧设备。然而,我国印... 近年来,国内外印刷设备更新换代的速度越来越快,印刷设备整体朝着性能更优异、自动化水平更高、色彩控制更精良的方向发展。与此同时,一些思维超前、资金富足的大型印刷企业相继引进新型高效的印刷机,取代原有的老旧设备。然而,我国印刷行业以中小型印刷企业居多, 展开更多
关键词 大型印刷企业 rutherford 闭环控制系统 X-Rite PANTONE 印刷生产 自动化水平 色彩控制 印品 手动调节 爱色丽
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筑梦蓝天
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作者 陈永战 《疯狂英语(新读写)》 2023年第1期23-25,76,共4页
In January 2022,the now 17⁃year⁃old Mack Rutherford watched his 19⁃year⁃old sis⁃ter,Zara Rutherford,set two new world records for flying around the world in an ultralight(超轻型的)aircraft.Less than a month later,Mack... In January 2022,the now 17⁃year⁃old Mack Rutherford watched his 19⁃year⁃old sis⁃ter,Zara Rutherford,set two new world records for flying around the world in an ultralight(超轻型的)aircraft.Less than a month later,Mack declared his intention to go for a world record too! 展开更多
关键词 超轻型 ZARA rutherford
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等离子体浸没离子注入豌豆种子的细胞学效应 被引量:4
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作者 吴美萍 何国兴 +2 位作者 陈英方 钟华 曹德新 《上海农学院学报》 1997年第4期272-275,共4页
用等离子体浸没离子注入设备对食荚青豌种子进行了氩离子注入。以卢瑟福背散射(RBS)方法测定了处理前后的食荚青豌种子的RBS谱,发现等离子体浸没氩离子注入过的种子在Ar^+处出现Bragg峰。对食荚青豌根尖染色体核型进行了分析,发现所... 用等离子体浸没离子注入设备对食荚青豌种子进行了氩离子注入。以卢瑟福背散射(RBS)方法测定了处理前后的食荚青豌种子的RBS谱,发现等离子体浸没氩离子注入过的种子在Ar^+处出现Bragg峰。对食荚青豌根尖染色体核型进行了分析,发现所进行的离子注人能延迟染色体着丝粒的复制。 展开更多
关键词 豌豆 食荚青豌 等离子体 浸没离子注入 染色体
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经皮腔内血管成形术治疗下肢缺血膝下病变 被引量:4
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作者 谭正力 缪鹏 +4 位作者 田然 宋希涛 李树国 刘昌伟 郁正亚 《首都医科大学学报》 CAS 北大核心 2015年第1期40-44,共5页
目的探讨经皮腔内血管成形术治疗下肢缺血膝下病变在RutherfordⅡ~Ⅵ不同分级的临床治疗效果。方法回顾分析首都医科大学附属北京同仁医院及北京协和医院血管外科2011年至2013年收治的189例下肢缺血膝下病变(blow the knee,BTK)行腔... 目的探讨经皮腔内血管成形术治疗下肢缺血膝下病变在RutherfordⅡ~Ⅵ不同分级的临床治疗效果。方法回顾分析首都医科大学附属北京同仁医院及北京协和医院血管外科2011年至2013年收治的189例下肢缺血膝下病变(blow the knee,BTK)行腔内血管成形术患者(207条肢体)。术前按Rutherford分级分组,术后随访并计算其临床症状缓解率、一期通畅率、生存率和保肢率。结果共入选患者189例,207条患肢。患者平均年龄(71.33±6.90)岁。其中,糖尿病148例、吸烟60例、高血压病124例、高脂血症90例、冠状动脉粥样硬化性心脏病(以下简称冠心病)58例、肾功能不全21例、脑血管病30例。患肢Rutherford分级Ⅱ~Ⅲ级45条、Ⅳ级71条、Ⅴ~Ⅵ级91条。平均随访时间(21.8±5.2)个月,总体病死率7.41%。RutherfordⅡ~Ⅲ级术后第1年、第2年保肢率分别为97.56%和93.81%,Ⅳ级术后第1年、第2年的保肢率分别为92.55%和87.86%,Ⅴ~Ⅵ级术后第1年、第2年的保肢率分别86.50%和77.58%。术后1年一期通畅率分别为86.85%、67.12%、50.54%,2年的一期通畅率分别为65.14%、54.67%、37.68%。结论经皮腔内血管成形术治疗严重下肢缺血合并膝下病变安全、有效,虽然中期随访通畅率较低,但保肢率较高,可以作为首选治疗方法。 展开更多
关键词 膝下动脉 血管成形术 外周血管疾病 rutherford
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盐酸沙格雷酯治疗下肢动脉硬化闭塞症的疗效观察 被引量:14
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作者 任师颜 王非 +2 位作者 钱松屹 樊雪强 刘鹏 《中日友好医院学报》 2012年第3期142-144,共3页
目的:研究盐酸沙格雷酯对下肢动脉硬化闭塞症(ASO)患者的疗效。方法:ASO患者分为盐酸沙格雷酯治疗组(n=46)和对照组(n=42)。治疗组口服盐酸沙格雷酯、阿司匹林,对照组仅口服阿司匹林。每例患者口服阿司匹林100mg/d,盐酸沙格雷酯100mg,3... 目的:研究盐酸沙格雷酯对下肢动脉硬化闭塞症(ASO)患者的疗效。方法:ASO患者分为盐酸沙格雷酯治疗组(n=46)和对照组(n=42)。治疗组口服盐酸沙格雷酯、阿司匹林,对照组仅口服阿司匹林。每例患者口服阿司匹林100mg/d,盐酸沙格雷酯100mg,3次/d,服用130d。观察患者的临床表现、Rutherford分型、踝肱指数(ABI)和药物不良反应。结果:治疗组患者感觉疼痛改善,步行距离增加,Rutherford分型0级和I级患者的改善具有显著性差异(P<0.05,P<0.01)。治疗后间歇性跛行从56.6%降低为28.3%,跛行距离显著延长(116.3±72.3m vs 243.5±175.3m,P<0.01),ABI指数显著改善(0.74±0.17 vs 0.86±0.18,P<0.01)。结论:盐酸沙格雷酯对ASO患者有明显的治疗作用。 展开更多
关键词 盐酸沙格雷酯 动脉硬化闭塞症 rutherford分期 踝肱指数
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离子注入微生物的生物效应研究 被引量:32
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作者 陈宇 林梓鑫 +4 位作者 张峰 柳襄怀 汤建中 朱卫民 黄勃 《中国抗生素杂志》 CAS CSCD 北大核心 1998年第6期415-419,共5页
用40keV、60keV的N+离子束对红霉素产生菌进行了离子注入,发现菌株存活率随注入剂量的增加呈指数衰减,并拟合了存活率—剂量公式。扫描电镜观察发现离子注入导致了红霉产生菌孢子的表面损伤。用100keVAs+注入大... 用40keV、60keV的N+离子束对红霉素产生菌进行了离子注入,发现菌株存活率随注入剂量的增加呈指数衰减,并拟合了存活率—剂量公式。扫描电镜观察发现离子注入导致了红霉产生菌孢子的表面损伤。用100keVAs+注入大肠埃希氏菌和枯草芽孢杆菌,对注入离子在其体内分布进行了Rutherford背散射测量和理论估算。 展开更多
关键词 微生物 离子注入 存活率 红霉素
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