“一追双控管理”降低欠注井新增速度简述

文章主要介绍了降低欠注井新增速度,"一追双控管理"模式的提出、实施及成效,用事实证明了欠注井治理"防要大于治"的重要性。通过实施"一追、双控"管理模式,临盘采油厂欠注井新增速度达到了近四年以来最低新增水平,欠注井总数也大幅下降,达到了近5年以来最低水平。     

Elman's recurrent neural network applications to condition monitoring in nuclear power plant and rotating machinery

The purpose of this study is to show the capability of recurrent neural nets (RNN) for condition monitoring and diagnosis in nuclear power plant systems and rotating machinery. In the first application, the study addresses the use of RNN for detecting anomalies introduced from the simulated power operation of a high-temperature gas cooled nuclear reactor. In the second, it is used to detect the motor bearing damage using a coherence function approach, which is defined between the motor current and vibration signals, for induction motors. Hence, the high performance of Elman's RNN was shown by means of two different applications.     

纤维缠绕压力容器表面损伤试验研究

通过制作纤维缠绕标准容器试样,并对部分试样表面纤维制作人工损伤,与标准容器试样比较爆破压力,并进行有限元分析、研究其破坏机理,对强度影响程度进行评估。结果表明：表面纤维损伤会造成压力容器在应力水平较低情况下局部发生层间剪切破坏,损伤容器爆破强度平均值降低22．4％,损伤修复后的容器爆破强度降低12．2％。     

沧州华润热电有限公司2号炉低温过热器爆管分析

通过对沧州华润热电有限公司2号炉低温过热器爆管原因进行分析,给出了本次爆管的结论。     

导波在多损伤板结构中的散射

对导波在含有单个损伤和两处损伤的板结构中时形成的散射波场进行了理论分析,利用附加Bessel理论推导了含两处损伤板的结构中任意一点处的叠加散射位移场。通过数值计算对比了含单损伤板和含两处损伤板以及两处损伤的相对位置变化时散射位移场在损伤周围的分布情况,得到的分析结果是进一步进行多损伤板结构健康监测的基础。     

JF202A型平网制版感光胶研制与应用

对ＪＦ２０２Ａ型平网制版感光胶的反应原理、合成工艺及生产设备作了分析研究,并对国内外有代表性的产品进行性能对比试验,其耐化学药剂及印刷牢度等综合性能优良。     

台兴油田注水水质对储层的伤害和对策

根据台兴油田的储层和流体特征,分析了注水水质对储层的伤害因素和机理。水敏伤害和注入水与地层水不配伍产生沉淀和结垢是吸水能力下降的主要因素。根据试验,防膨剂TDC-15,A-25,防垢剂TH-8185效果良好。及时、定时、定量投加防膨剂和防垢剂是防止注水水质对储层伤害的重要措施。对水处理工艺进行改造,增设脱氧、膜过滤系统,使水中溶解氧和悬浮固体含量达到注水水质标准。     

Molecular Partners of Escherichia coil Transcriptional Modulator AidB

The AidB protein is involved in the adaptive response to DNA alkylation damages in Escherichia coli. Functional proteomic experiments were designed to elucidate AidB biological functions in the presence and in the absence of methyl methanesulfonate as methylating agent. Several proteins were identified in both conditions and according to their reported biological activities, the inter-actors were grouped into three different functional categories： stress response, energetic metabolic pathways and nucleic acid metabolism. Particularly, the interaction between AidB and UvrA, a member of the UvrABCD nucleotide excision system, suggested a new interesting putative role for AidB.     

Editorial

Although the owner may have a legitimate claim against a contractor for breach of contract, calculation and proof of damages incurred by the owner is often a difficult task. Owners should be aware of the types of damages which may be recovered from contractors for delayed project completion, defective work, or abandonment of the project, and how t o prove these damages. When a contractor has a legitimate construction claim against an owner, he must be aware of the wide variety of damages which he may have suffered in order to assure himself chance of maximum monetary recovery. A claim may arise on account of a delay, disruption, or termination of the contractor's performance, and recoverable costs can be analysed under these three categories. In addition, the contractor must be careful t o choose the best method of proving damages if he is t o successfully prosecute his claim. Although the legal principles discussed in this article are drawn from the public and private sectors o f the United States construction industry, they may be applied in arbitrations both in the United States and abroad.     

W波段光控Gunn管谐波振荡器的实验研究

本文提出了Ｗ波段Ｇｕｎｎ管谐波型光控振荡器的设计方案，该方案在振荡器的基波腔内填充本征半导体Ｓｉ片，并通过光纤将半导体激光器产生的光束耦合到Ｓｉ片，以达到光对振荡器工作频率的控制，在实验中采用波长为０．８６３μｍ的激光照射Ｓｉ片，取得了光控频率达７ＭＨｚ的结果。