加快电信管制改革 实现电信健康发展

通过对我国电信业市场结构、市场行为及市场绩效进行分析，阐明了在我国进行电信管制的必要性。通过管制，以实现电信企业的有效竞争，使我国电信业得到健康发展。     

HYQ-965-Ⅲ解堵剂的研制及现场应用

针对涠洲11-4油田W11-4D-A1井返吐油基泥浆堵塞油管问题,以渗透剂、乳化剂、分散剂、互溶剂为原料,制备了HYQ-965-Ⅲ解堵剂.考察了不同配方解堵剂中原料间的配伍性和溶垢效果,研究了最佳配方:渗透剂Ⅰ20%、乳化剂Ⅰ10%、分散剂10%、互溶剂10%、海水50%.将该解堵剂在W11-4D-A1井进行应用,从现场使用情况看,HYQ-965-Ⅲ对油基泥浆、原油具有很好的分散能力,成功解除了油管堵塞,达到预期设计要求.     

高温高压下多种气体在储层岩心中吸附等温线的测定

利用自行研制的XF1型高温高压气体吸脱附测试仪,结合一台色谱分析仪(HP6890),一套抽真空系统,分别测定了N₂、CH₄、C₂H₆、C₃H₈、nC₄及其混合气体在三个岩心中的吸脱附等温线共计42条(单组分30条,累计测试点516个;混合气12条,累计测试点203个),以及吸附平衡后混合气的自由气相组成、吸附相组成和各组分的吸附等温线各48条(累计测试点431个).测试的温度为50.5℃.实验结果表明:①储层岩心介质对烃类气体的吸附现象是客观存在的,不容忽视;②仅就测试所得的数据来看,如果忽略其它因素,可以初步估计,不考虑吸附的砂岩储层气藏的计算储量将比考虑吸附少5%以上;③岩心-气体吸附体系的吸附能力除受压力影响外,更受到储层介质、岩石成分、结构和物性性质的影响,除此之外,还受到多组分气体中重烃组分数目、摩尔含量等的影响;④多组分气体组分相对吸附量能有效地表征多组分气体中各组分气体的竞争吸附能力大小,依据这个指标可将五元多组分气体体系中各组分气体按其竞争吸附能力由强到弱排序为nC₄>C₃H₈>C₂H₆>CH₄>N₂.     

大比例尺地质剖面图第一条标高基线绘制方法的探讨

介绍了大比例尺地质剖面图第一条标高基线的几种绘制方法，总结了绘制经验。     

基于态势熵的网络安全态势评估指标体系研究

针对网络安全态势评估指标体系的不完善和难以选取及构建等问题,以相关标准和规范为基础,从系统安全机制出发,按照既定原则,提出了基于态势熵的网络安全态势评估指标体系的构建方法,并给出了网络可用性方面的态势评估指标值的计算方法.实验表明,态势熵值的变化与所反映的网络安全态势是一致的,说明该指标体系的构建具有一定的科学性,为网...     

高职类院校"嵌入式系统"教学思考

本文根据嵌入式系统的教学特点和高职类院校人才培养的目标,分析了高职类院校嵌入式系统教学的现状与特点、并对如何改进嵌入式教学现状、如何才能更好地培养出满足社会需求的高素质嵌入式技术人才提出了几点建议.     

Entanglement of the quantum system with spin–spin coupling created by optical excitation

In this paper, we investigate the quantum entanglement characteristics of the system consisting an intermediary molecule with an optically excited triplet and two bilateral spin-1/2 nucleons. The two nuclear spins both couple to the excitation state which is caused by a pulsed laser. We study the linear entropy and entangling power of the evolution operator acting on the product state of the system. We deduce the entangling power when the energy state has a uniform distribution, and we find that the entanglement of the system shows a certain stability. In this paper, several standard expressions are analyzed and calculated in detail, including the detailed solution for the quantum entropy as well as the calculation of the linear entropy and entangling power, which are based on this solution. In comparing the linear entropy and entangling power, we find that the latter is the average of the former. Subsequently, we present an alternative derivation of the evolution operator and find that the result is consistent with that of the traditional method. When the evolution operator acts on the average of the product states, the entangling power of the evolution operator presents a distinct changing trend.     

转化炉炉头衬里损坏原因分析及抢修总结

转化炉是我公司净化车间转化工段的重要反应设备，采用的是加压催化部分氧化法，焦炉气和氧气从上部分别进入转化炉后混合，立即进行氧化反应放出热量，并很快进入催化床层进行转化反应，转化气从转化炉底部引出，温度980℃左右，压力2．2MPa。     

Behavior of pre-stress group anchors——Theory approach and model

First of all the pre-stress group anchor ropes are resolved into twosub-systems: the stable rock stand lateral resistance load and inner bonding sectionstand lateral resistance load and pre-stress load. Then, discretization of everysub-system was carried on and it is assumed that different micro-sections possessuniform distribution side resistance. On the basis of Mindlin stress solution, stress overlay principle, modified layered-summation method as well as the load transfer method, westudy the anchor group effect and present a theory model which calculates the anchorgroup effect and establishes the relevant iterate standard.     

Optical temperature sensor based on ZnO thin film's temperature-dependent optical properties

A reflective fiber temperature sensor system based on the ZnO thin film is proposed. The transmittance spectra and temperature dependent optical property of the sensing head with ZnO thin film is investigated theoretically and experimentally, and the temperature resolution of ～1?°C is obtained in the temperature region of 300-773 K. The temperature sensing system is only related to the wavelength shift of transmittance spectra, and has a high stability without depending on the incident light intensity. This research results also indicate a fiber optical sensor with a broad temperature measurement range (10-1800 K) can be gained as a promising temperature sensing device, and can be applied into some extremely environments, such as aircraft, nuclear power station and power transmission system, and so on.