平湖油气田放鹤亭构造平湖组储层精细反演

平湖油气田放鹤亭构造平湖组气藏已进入开发中期，油气水关系复杂，为提高采收率，需要了解平湖组气藏的砂体空间展布。为此，开展了储层精细反演。首先对古近系始新统平湖组、渐新统花港组的测井曲线进行了环境校正；在此基础上，采用精细小层对比约束下的岩石物理分析方法，得到平湖组储层波阻抗总体偏低的认识．认为可以采用波阻抗对储层进行描述。采用精细井震标定、子波提取、精细地质建模、低频分量选取、λ参数选取和叠后约束稀疏脉冲波阻抗反演等技术的储层精细反演方法，对平湖组储层进行了精细反演，绘制了平湖组各气藏波阻抗均方根平面图，对砂体的展布进行了描述，预测了新的含气砂体面积。     

不同场地类别对同一结构抗震计算结果的影响

本文从设计反应谱出发,分析计算了同一结构处于不同场地类别时的抗震计算结果及其比值,绘出了该比值曲线图,并结合实际工程对其进行了验证。在工程设计中,可直接根据本文结果进行估算。本文最后还给出了某些实际工程由于所在场地类别不同对工程用钢量的影响。     

基于本地电气量的无故障跳闸新判据

传统的无故障跳闸判据只检测线路上潮流的突然变化，在潮流转移后线路轻载时容易导致稳定控制装置的误动。文中分析了不同情况下线路首端测量阻抗的特性，揭示了装置安装处的测量阻抗值在线路无故障跳闸时和潮流转移时具有明显差异的机理，提出了基于本地电气量计算出的测量阻抗的无故障跳闸新判据，并用数字仿真验证其有效性。     

地震反演技术在生物礁（滩）储层预测中的应用

新区由于勘探程度较低，使用宽带约束地震反演技术进行储层预测非常必要。在介绍了宽带约束稀疏脉冲反演技术的基本原理、实现方法以及反演流程的基础上，在四川盆地syb地区首次利用约束稀疏脉冲反演技术进行了储层预测，反演过程中运用2口井进行约束，将反演结果与井真实情况相对比，其下三叠统飞仙关组的飞二段、飞一段以及上二叠统长兴组的上段与钻井、测井解释储层吻合较好。根据反演结果圈定了礁（滩）发育带，并最终落实了钻井目标。该方法在勘探程度比较低的地方可以较准确地预测储层岩性和展布规律，对油气田的进一步勘探开发，以及降低勘探开发风险有一定的指导意义。     

Optical properties of colloidal crystalline arrays composed of hollow polystyrene spheres

We have evaluated the optical properties of close‐packed and non close‐packed colloidal crystalline arrays made of hollow polystyrene spheres. Close‐packed colloidal crystalline arrays were fabricated by simple evaporation of dispersions, whereas nonclose‐packed colloidal crystalline arrays were fabricated by exploiting electrostatic interactions between the spheres in aqueous dispersion. Optical properties of the arrays were estimated from angle‐resolved reflection spectra. The Bragg diffraction peak of the colloidal crystalline array made of hollow spheres was of shorter wavelength than in the case of solid spheres, not only for the close‐packed array but also for the nonclose‐packed array. These shifts were caused by a decrease in the effective refractive index n_eff with decreasing particle refractive index. We have found that this relationship could be explained by the simple equation n_eff = n_particle?+ n_solvent (1 ? ?), where ? is the volume fraction of the particles, for both close‐packed and non close‐packed arrays. The current work suggests new possibilities for the creation of advanced colloidal crystals. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 2364–2368, 2007     

光通信系统中数字配线架电接触不良的影响

基于现场搜集的连接器，分析了可能导致电接触不良的因素，并且根据电接触理论结合高频传输的特点建立了通信系统中电触点的物理模型。最后以光通信系统中数字配线架（ＤＤＦ）上的同轴连接器为例，探讨了电触点故障导致误码率增高的可能性。     

Corrosion of reinforcing steel in neutral and acid solutions simulating the electrolytic environments in the micropores of concrete in the propagation period

Steel embedded in concrete passivates due to the alkaline nature of the concrete pore solution. Reinforcement corrosion develops when the alkalinity is neutralized. Corrosion, in turn, induces acidification of the surrounding pore solution. In the present paper, corrosion rate of corrugated steel bars is studied and measured at different pH values in solutions simulating chloride environments. The media considered consists of saturated calcium hydroxide solutions containing Na and K⁺, neutralized with ferrous chloride. This latter substance is the soluble compound produced during the corrosion of steel after chloride attack. Hydrochloric acid solutions of different pHs were prepared in order to compare the steel corrosion rates in these solutions with those observed in ferrous chloride solutions of the same pH. A comparison of polarization resistance measurements (R_p) with gravimetrically weight loss determined is presented. Tafel slopes results are also included. Additionally, a comparison is made between measurements of AC impedance with those of the R_p method. The results indicate that the corrosion rate in the studied media follows the general trend found in other media of similar pH values: corrosion increases in acidic solutions, remains rather stable for pH range 3-11 and decreases significantly in highly alkaline solutions.     

脉冲堆驱动线抗震分析

脉冲堆驱动线结构大多为细柔部件,且对其传动功能的要求较高。因此,首先将堆桥及整个驱动线作为一个完整的力学模型进行分析,其次分析各个子结构。并将计算结果与实验结果作了比较,表明分析的结果是可靠的,证明子结构法是一种简便实用、行之有效的分析方法。最后用响应谱法的结果对关键部位作出了初步地震安全评价。     

The surface impedance of superconductors and normal conductors: The Mattis-Bardeen theory

The contribution of the Mattis-Bardeen theory to the understanding of the surface impedance of superconductors and normal conductors is reviewed. The early theoretical and experimental studies of the surface impedance of conductors are sketched to provide the context in which the Mattis-Bardeen theory and, independently, the Abrikosov-Gor'kov-Khalatnikov theory were developed. The Mattis-Bardeen theory is described along with the methods for numerical calculation of the surface impedance from their expression for the current density. Extensions to include the effects of anisotropy and strong coupling are briefly discussed. Theory is compared with representative measurements of the surface impedance, demonstrating excellent agreement in absolute magnitude and in the dependences on frequency, temperature, and material parameters.     

Partially linear model for harmonic contribution determination

Harmonic contribution determination is the premise on which the improvement of power system harmonic management is based. Calculating the harmonic impedance accurately is the key issue in harmonic contribution determination. The fluctuation method is a mature method for calculating the harmonic impedance in engineering applications. However, this method is ineffective when the background harmonic fluctuation is dominant. To make up the deficiency of the fluctuation method, the partial linear regression model for the harmonic impedance calculation is proposed in this paper, and then a two‐stage method is derived for the unbiased estimation of the model. The method proposed in the paper can calculate the harmonic impedance whether or not the background harmonic fluctuation is dominant, and then the harmonic contribution can be determined. The effectiveness of the proposed method is verified by the IEEE14‐bus system simulation and field test. © 2016 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.