电针结合干涉电流型低周波治疗膝骨性关节炎60例

膝骨性关节炎（KOA）是一种临床常见多发病，多发生于中老年人。该病的发生率随年龄的增大而增高。以骨关节软骨发生广泛退行性改变和破坏的慢性关节炎，并多层次，不同程度的累及骨质、骨膜、关节及其它结构，导致膝关节周围肌肉发生异常，从而使膝关节软骨发生变性，严重的骨性关节炎周围肌腱亦受损。临床表现为双膝关节肿胀，疼痛，关节活动受限，休息痛等一系列症状，严重者甚至需要卧床，丧失生活自理能力。笔者对60例患者采取电针结合干涉电流型低周波治疗，取得满意效果，现报道如下。

应用干涉电流型低周波联合颈牵治疗颈椎病的对照研究

目的 了解应用干涉电流型低周波联合颈牵治疗颈椎病的疗效。 方法 选择132例确诊颈椎病病人,随机分为治疗组68例和对照组64例,对照组仅用单纯颈牵治疗,对治疗前后两组病人应用颈椎病临床评价量表进行对照分析。 结果 两组病人治疗前评分差异无显著性意义(P>0.05),治疗后评分差异有显著性意义(P<0.05),治疗组疗效明显优于对照组;抽取两组病人中的神经根型和椎动脉型病人作主观症状和临床体征两项内容的评分对照,两组病人的两种分型治疗前评分差异无显著性意义(P>0.05),治疗后椎动脉型病人的评分差异有显著性意义(P<0.05),而神经根型病人的评分差异有非常显著性的意义(P<0.01),治疗组疗效明显优于对照组,而神经根型病人的治疗效果又优于椎动脉型病人。结论 干涉电流型低周波联合颈牵治疗颈椎病疗效确切,尤对神经根型颈椎病病人治疗效果显著,值得推广应用。

用于外周神经的干涉电流刺激器设计

设计了一种用于外周神经电刺激的干涉电流刺激器。该刺激器为两路电流输出,可以产生4种波形,每种波形的频率、幅度等参数可在上位机进行设置,频率分辨率为0.2 Hz,幅度分辨率为0.01 mA,时间分辨率为0.1μs。该刺激器的特点在于可在刺激强度一定的条件下连续改变电流比,或在电流比一定的情况下连续改变刺激强度。上位机采用LabVIEW开发,下位机采用FPGA对3片DAC进行控制,DAC产生的波形信号经过隔离恒流源电路后施加到负载。经过测试,刺激器能够准确产生4种波形,电流偏差在2.6%以内,恒流效果良好。该刺激器体积小,操作简单,产生波形稳定,可以用于无损选择电刺激研究。

矢势A场中二维超导感应电流的干涉

在二维超导金属面上,用被超导屏蔽的距离为d的两无限长直磁通垂直穿过,开始dφ/dt≠0,并在二维超导金属面上感应两个反向等值电流,然后使dφ/dt=0且两磁通皆维持φ0不变.本文计算并模拟了二维超导金属面上感应电流的干涉分布流线.我们称这一效应为L-J效应,它是A场中的超导感应电流干涉效应.

神经肌肉刺激器检测方法探讨

介绍了神经肌肉刺激器的发展、原理和技术参数,结合国家相关标准和行业标准对刺激器输出电流有效值;信号频率;直流分量;干涉电流有效值;脉冲宽度;通道稳定性等重要参数提出了检测方法。

Bosonic Operator Realization of Hamiltonian for a Superconducting QuantumInterference Device

Based on the appropriate bosonic phase operator diagonalized in the entangled state representation we construct the Hamiltonian operator model for a superconducting quantum interference device. The current operator and voltage operator equations are derived.

Scanning Tunneling Electron Transport into a Kondo Lattice

We theoretically present the results for a scanning tunneling transport between a metallic tip and a Kondo lattice.We calculate the density of states(DOS)and the tunneling current and differential conductance(DC)under different conduction-fermion band hybridization and temperature in the Kondo lattice.It is found that the hybridization strength and temperature give asymmetric coherent peaks in the DOS separated by the Fermi energy.The corresponding current and DC intensity depend on the temperature and quantum interference effect among the c-electron and f-electron states in the Kondo lattice.

Sparse current source reconstruction in MCG

Cardiac current source reconstruction is investigated by a fast greedy sparse(FGS) method applied to simulated and real magnetocardiography(MCG) data measured using 61-channel superconducting quantum interference device. The approach reduces the size of the lead field matrix based on a priori knowledge of dipolar magnetic field map. Consequently, the computational demands and the accuracy of sparse source reconstruction are improved simultaneously. The simulation results demonstrate that the FGS method is capable of reconstructing sparse equivalent current sources using the magnetic field data generated by a single current source with varying orientation or multiple current sources generated randomly. In addition, we analyze the cardiac current source reconstructed with real MCG data at typical instants and discuss the electrical excitation conduction during the QRS complex based on moving sparse source imaging.

Frequency(Stochastic) Resonance and Stochastic Resonance for a Superconducting Junctions' Device

In this paper, we investigate a Josephson-junction device with dichotomous resistance or a special SQUID(superconducting quantum interference device). It is shown that frequency(stochastic) resonance and stochastic resonance can appear for some suitably selected parameters' values of the device respectively. Our results can provide some insights for the investigation of the SQUID response to the signal(including the input alternating current, the added alternating voltage, the vertically added alternating magnetic field, and the detected(electric-magnetic) temporal-periodic signal).