玻璃钢——钢混合抽油杆柱系统设计方法

在前人工作的基础上，提出了一种新的玻璃钢－－钢混合抽油杆柱的设计方法－－系统设计法。     

瞬态电荷收集法研究a—Si：H／a—SiN：H界面处的电子积累＊

本文介绍一种研究a-Si:H/a-SiN:H界面层电子积累特性的新方法,所用样品为Cr/a-SiN:H/a-Si:H/(n+)a-Si:H/AI.测试表明,a-Si:H/a-SiN:H界面是一个电子积累层,其电子面密度为3.2×10~(11)/cm~2,并且界面层中的电子面密度随外加电压的增加而线性增加。实验结果与理论分析相一致。     

Green electroluminescent polyfluorenes containing 1,8-naphthalimide moieties as color tuner

A series of copolymers (CNPFs) containing low-band-gap 1,8-naphthalimide moieties as color tuner was prepared by a Yamamoto coupling reaction of 2,7-dibromo-9,9-dioctylfluorene (DBF) and different amount of 4-(3,6-dibromocarbazol-9-yl)-N-(4′-tert-butyl-phenyl)-1,8-naphthalimide (Br-CN) (0.05-1 mol% feed ratio). The light emitting properties of the resulting copolymers showed a heavy dependence on the feed ratio. In photoluminescence (PL) studies, an efficient color tuning through the Förster energy transfer mechanism was revealed from blue to green as the increase of Br-CN content, while in electroluminescence (EL) studies, the color tuning was found to go through a charge trapping mechanism. It was found that by introduction of a very small amount of Br-CN (0.1-0.5 mol%) into polyfluorene, the emission color can be tuned from blue to pure green with Commission International de l'Echairage (CIE) coordinates being (0.21, 0.42) and (0.21, 0.48). A green emitting EL single-layer device based on CNPF containing 0.1 mol% of Br-CN showed good performances with a low turn-on voltage of 4.2 V, a brightness of 9104 cd/m², the maximum luminous efficiency of 2.74 cd/A and the maximum power efficiency of 1.51 lm/W. To further improve the EL performances through balancing the charge trapping process, a copolymer (BCNPF05) derived from 0.5 mol% of a triarylamine-containing 4-{3,6-bis-[4″-(4?-bromophenyl-p-tolyl-amino)-phenyl]-carbazol-9-yl}-N-(4′-tert-butyl-phenyl)-1,8-naphthalimide (Br-BCN) and 99.5 mol% of 2,7-dibromo-9,9-dioctylfluorene was also prepared. As expected, a single layer EL device based on BCNPF05 exhibited better performances with a brightness of 14228 cd/m², the maximum luminous efficiency of 4.53 cd/A and the maximum power efficiency of 1.57 lm/W.     

高炉料车卷扬电力拖动方案原理的分析和比较

本文面向炼铁高炉主卷扬电力拖动方案，通俗简介了各种电机电气传动方式和它们的特点，重点分析了绕线电机串阻调速，直流电机调速和交流电机通用变频调速的适用性和优缺点，特别指出了变频调速的节能优势及应用中存在和应注意的问题。     

GATOR综合导航系统的关键技术剖析

GATOR是目前世界上最先进的海底电缆地震勘探综合导航系统，文中阐述了该系统集成化的数据采集及同步控制接口、灵活可变的系统配置、基于无线网络的数据交互及管理、卡尔曼滤波实时导航定位等技术特点。     

可钻式捞砂工具研制及应用

可钻式捞砂工具是根据钻井中钻头破碎岩石的原理，利用钻柱自身重量，由刮刀钻头或磨鞋将垮塌的岩块、板结的沉砂破碎；利用深井泵的抽吸功能，在井底造成液体的局部循环，将破碎的岩块或沉砂带入沉砂管，然后随管串取出。文中介绍了该工具的主要结构、工作原理、现场试验情况，提出了该工具在修井作业中的适用性和改进意见。     

Application of successive approximation method to the computationof the Green's function in axisymmetric inhomogeneous media

The successive approximation method (SAM) is applied to the computation of the Green's function in axisymmetric inhomogeneous media, SAM is implemented by using an iterative procedure that produces a series, and the series is proven to be a Taylor series. The condition of the convergence is derived from the theory of functions of several complex variables. In each iteration, the Fourier-Hankel transform and its inverse are applied to the approximation of some order of the Green's function and the result is the approximation one order higher than the original. Fast Fourier-Hankel transform (FFHT) is employed to speed up the computation, and thereby, an algorithm SAM-FFHT is formulated     

接箍拧紧机的扭矩校准

介绍了接箍拧紧机的扭矩测量原理及ZSM-1型电脑扭矩显示器，论述了大量程扭矩校准的方法及技术要求，并提出了此方法所产生误差的原因和消除误差的方法。