热涨落作用下的DC SQUID特性研究

研究了在热涨落作用下的双结超导量子干涉器件（DCSQUID）系统，以二维的FokkerPlanck方程为基础，从理论上首次得到了DC SQUID系统的精确的定态概率分布函数，进而导出系统的各种物理量的统计表达式，利用数值计算讨论了在热涨落作用下，各种参数对DC SQUID系统特性的影响。     

Г空间中量子态密度的计算

我们用两种方法计算了设计的积分,得出Γ空间中的相体积和量子态密度,并给予讨论。     

介观含源RLC并联电路在压缩Fock态中的量子涨落

从RLC并联电路的经典运动方程出发，研究了介观含源RLC并联电路在压缩Fock态中磁通量和电荷的量子涨落。着重讨论了阻尼对量子涨落的影响。     

基于神经元控制的交流传动系统的研究

针对交流传动系统的特点，提出了基于神经元控制算法，仿真结果表明，该系统不仅具有满意的动态特性，而且又具有较强的鲁棒性与自适应性。     

Neuron Protective Constituents from Rheum Nanum and Rheum Sublanceolatum

The neuron protective activity of the chemical constituents from Rheum nanum and Rheum sublanceolatum in vitro was investigated using cultured embryonic mouse cortical cells exposed to oxygen-glucose deprivation. The protective effect was quantitatively evaluated by measuring the lactate dehydrogenase release rate. Most of the compounds reduce the lactate dehydrogenase release rate, including emodin, chrysophanol-8-O-β-D-glucopyranoside, 6-hydroxymusizin-8-O-β-D-glucopyranoside, gnetin C, torachrysone-8-O-β-D-glucopyranoside, and maesopsin, and all possess potent neuron protective activity. Chrysophanol and aloe-emodin exhibit neuron protection only at low concentrations. Emodin-8-O-β-D-glucopyranoside protects the neuron cells at high concentration. Aloe-emodin-8-O-β-D- glucopyranoside is inactive.     

含噪多址量子信道容量定理的求证与应用

含噪多址量子信道的容量研究是实现量子多用户通信的基础.文中利用经典-量子纠缠产生编码定理和量子-量子纠缠产生编码定理求证了含噪多址量子信道容量定理,获得了含噪多址量子信道的经典-量子容量区域和量子-量子容量区域,并将该定理应用到多址量子相位翻转信道中,计算得到量子相位翻转信道的量子-量子容量区域,结果验证了容量定理的有效性,得到量子-量子容量区域是五边形区域.为了计算简便且不失一般性,求证过程考虑采用两输入-单输出信道的含噪多址量子信道模型.     

成年斑胸草雀弓状皮质栎核投射神经元电生理特性的性别差异

利用离体脑片膜片钳技术检测RA投射神经元电生理活动的主动和被动特性,对其性别差异进行探讨.结果发现鸣禽RA投射神经元电生理特性在发放频率和诱发动作电位幅值方面存在明显的性别差异.     

大自旋量子相干振荡的标准量子力学理论

首先,概括文献上对宏观量子相干振荡的表述;其次,给出量子相干振荡的标准量子力学理论,它既适用于宏观系统,亦适用于微量和介观系统;最后,求解两种典型的大自旋系统的本征能谱,以及量子相干振荡 的存在条件和振荡频率。     

Effect of New O-Superfamily Conotoxin on Voltage-Activated Currents of Hippocampal Neurons

The effects of a new O-superfamily conotoxin, SO3, on sodium current (INa), transient A-type potassium currents (IA), and delayed rectified potassium currents (IK), were examined in cultured rat hippocampal neurons using the whole-cell patch clamp technique. Addition of SO3 caused a concentration-dependent, rapidly developing, and reversible inhibition of voltage-activated currents. The IC50 values for the blockage of INa, IA, and IK were calculated as 0.49, 33.9, and 7.6 μmol/L, respectively. The determined Hill coefficients were 1.7, 0.6, and 1.2, respectively. These results indicate that SO3 can selectively inhibit neuronal sodium and potassium currents.     

鼠耳蝠下丘听神经元对超声刺激的反应特性

实验在５只鼠耳蜗上进行，共观察了２２７个对超声刺激发生反应的下丘听神经元。这些神经元听反应的最佳频率在１４．３－７６．２ｋＨｚ之间；潜伏期在３．０－１２．０毫秒之间，多数神经元（７９．３％）为５．０－７．０毫秒；最低阈值位于－２０．０－７０．０ｄＢ ＳＰＬ之间；多数神经元（８２．０５％）的调谐曲线为宽阔型，少数（１７．９５％）为狭窄型；反应最佳频率沿下丘背腹轴呈明显有序地排列。