基于插值法的静止无功补偿计算机控制

依据电力系统的近似数学模型，提出了适用于稳定供电电压的无功电压控制曲线。在此基础上，论述了应用插值公式的静止无功补偿计算机控制方法。该方法应用简便，具有较好的动静态特性。     

井储效应对确定垂直裂缝方位的影响

给出考虑井储效应的均匀流量在垂直裂缝井中产生的压力在Ｌａｐｌａｃｅ空间中的解析解，利用此解通过干扰试井压力分析可以确定裂缝方位。结果表明，井储效应对压力特征有很大影响，确定裂缝方位时应考虑井储效应的影响。     

普通硬磁泡温度特性的进一步研究

实验研究了经筛选的普通硬磁泡在非压缩状态下的温度特性，通过与未经筛选的普通硬磁泡在非压缩状态下温度特性的对比，发现：在非压缩状态下，在Ｔ和Ｔ（Ｔ和Ｔ０是两个与样品参数有关的临界温度）之间，经温度作用后，所有的普通硬磁泡畴壁中的垂直布洛赫线都要丢失，且含有垂直布洛赫线少的普通硬磁泡最先被软化为软泡。     

模糊决策在电源规划中的应用

将模糊决策应用于电源扩展规划中,提出了电源规划模糊决策方法。     

抽象数据类型的代数方法研究

抽象数据类型是实现面向对象程序设计方法的有力工具.本文的目的在于利用抽象代数结构来描述抽象数据类型并给出它的数学含义;同时,指出任意可见标志Σ的一个抽象数据类型是一个Σ一计算结构的同构类,从而在基本项 T(Σ)上的等价概念基础上,得出了抽象数据类型与有关计算结构等价的一系列结论.     

SU(3)_L×U(1)模型

1967到1968年,Weinberg与Salam利用自发破缺的Higgs机制提出了完整的SU(2)×U(1)弱电统一规范理论(W—S模型)。本文重新构造了一个非标准的SU(3)_L×U(1)模型,结果与W—S模型相容。     

一体化电机系统中传导干扰抑制方法的研究

为了抑制一体化电机系统中的传导干扰，分析了一体化电机系统传导干扰的产生机理及其耦合途径．根据干扰机理、耦合途径及干扰源的分布，分别采取相应的抑制措施．功率器件的电压过冲和电压变化率可以通过缓冲电路来进行抑制．基于传导干扰的耦合途径不同，以变流器为界，前后分别从漏电流和共模电压的角度进行抑制，采用有源滤波来补偿漏电流和消除共模电压．在理论分析的基础上，设计了用于抑制传导干扰的新型滤波器．实验结果证明，增加缓冲电路和滤波器后，一体化电机系统的传导干扰强度明显减弱．     

Extraction and Purification of Matrix Protein from the Nacre of Pearl Oyster Pinctada fucata

A soluble matrix protein P14 with an apparent molecular mass of 14.5 kDa was isolated from fragmented nacre of pearl oysters （Pinctada fucata） treated with 10% NaOH solution to investigate the nacre matrix proteins and their effect on the CaCO3 crystal. The protein was characterized by gel exclusion chromatography and reversed-phase high performance liquid chromatography after demineralization by 10% acetic acid. The X-ray diffraction pattern of P14 crystals indicates that P14 plays an important role in nacre biomineralization. P14 can induce aragonite formation, stimulate CaCO3 crystal formation, and accelerate aragonite precipitation. Heating of the acid insoluble nacre residue, which was named conchiolin, in 10% sodium dodecyl sulfate solution supplemented with 10% β-mercaptoethanol solution for 10-20 min at about 100℃ gave two other soluble proteins having molecular masses of 19.4 kDa and 25.0 kDa. The present study suggests that these two proteins are linked to the insoluble organic matrix by disulfide bridges because the extraction yield increases when β-mercaptoethanol is added to the medium.     

Role of visual pigment properties in rod and cone phototransduction

Retinal rods and cones share a phototransduction pathway involving cyclic GMP. Cones are typically 100 times less photosensitive than rods and their response kinetics are several times faster, but the underlying mechanisms remain largely unknown. Almost all proteins involved in phototransduction have distinct rod and cone variants. Differences in properties between rod and cone pigments have been described, such as a 10-fold shorter lifetime of the meta-II state (active conformation) of cone pigment and its higher rate of spontaneous isomerization, but their contributions to the functional differences between rods and cones remain speculative. We have addressed this question by expressing human or salamander red cone pigment in Xenopus rods, and human rod pigment in Xenopus cones. Here we show that rod and cone pigments when present in the same cell produce light responses with identical amplification and kinetics, thereby ruling out any difference in their signalling properties. However, red cone pigment isomerizes spontaneously 10,000 times more frequently than rod pigment. This high spontaneous activity adapts the native cones even in darkness, making them less sensitive and kinetically faster than rods. Nevertheless, additional factors are probably involved in these differences.     

论深化教育教学改革须正确处理好的几个关系

文中按实事求是的原则和辩证唯物主义的观点,结合重点庆邮电学院的实际情况,从高等工程教育的现状分析入手,论述了应正确处理好的九方面的关系。