沥青油毡瓦国内外标准对比分析

从范围、原材料要求、组分要求、物理力学性能等方面对比分析了我国现行油毡瓦标准与欧美标准的区别,提出了我国制订沥青油毡瓦国家标准的的原则。     

钻井污水处理技术研究进展

通过分析钻井污水的来源及钻井污水共同的特点。阐述了国内外钻井污水处理的方法，即电絮凝浮选法、混凝－气浮－过滤法、机械过滤法和过滤－吸附－反渗透法和化学混凝－强化固液分离法以及絮凝剂作用机理，即压缩双电层机理、吸附电中和作用、吸附架桥作用和沉淀物网捕作用。提出要进一步开展絮凝机理研究，为今后研制性能更好的钻井污水处理剂新型产品提供理论和实验依据；絮凝剂要在防腐、杀菌等方面起一定作用，使絮凝剂产品多样化和多功能化，以提高絮凝效果；在优选絮凝剂产品的基础上，加强对絮凝处理工艺的研究，规范各种处理措施，将会对提高处理效果起到十分重要的作用。     

Estimating the power bus impedance of printed circuit boards with embedded capacitance

Embedded capacitance is an alternative to discrete decoupling capacitors and is achieved by enhancing the natural capacitance between closely spaced power and return planes. This paper employs a simple cavity model to investigate the features affecting the power bus impedance of printed circuit boards with embedded capacitance.     

台北凹陷小草湖次凹油气成藏特点及有利区带

吐哈盆地小草湖次凹发育多套烃源岩，油源条件好，油气资源丰富，油气勘探潜力巨大，中侏罗统发育三套储盖组合，凹陷内油气藏类型主要为侏罗系三间房组，七克台组的构造－岩性复合型和侏罗系西山窑组的深盆气藏，燕山运动末期是小草湖次凹一次重要的成藏期，古构造，古构造背景和构造－岩性复合型圈闭发育是小草湖次凹成藏主控因素，根据小草湖次凹成藏主控因素评价和优选有利区带，勘探工作取得了良好效果。     

Improving signal prediction performance of neural networks through multiresolution learning approach.

In this paper, we extend the original work on multiresolution learning for neural networks, and present new developments on the multiresolution learning paradigm. The contributions of this paper include: (1) proposing a new concept and method of adjustable neural activation functions in multiresolution learning to improve neural network learning efficacy and generalization performance for signal predictions; (2) providing new insightful explanations for the multiresolution learning paradigm from a multiresolution optimization perspective; (3) exploring underlying ideas why the multiresolution learning scheme associated with adjustable activation functions would be more appropriate for the multiresolution learning paradigm; and (4) providing rigorous validations to evaluate the multiresolution learning paradigm with adjustable activation functions and comparing it with the schemes of multiresolution learning with fixed activation functions and traditional learning. This paper presents systematically new analytical and experimental results on the multiresolution learning approach for training an individual neural network model, demonstrates our integral solution on neural network learning efficacy, and illustrates the significant improvements on neural networks' generalization performance and robustness for nonlinear signal predictions.     

利用新型场效应管(QFET)的正向变换器

介绍了单端正向变换器基本电路，重点叙述带三路调节DC电压的100KHZ180W离线电源。它采用具有低导电阻RDS和低栅极电荷Qg的新型场效应管（QFET）作为变换电路的主开关器件，降低了电源开关损耗并提高了效率3%-5%。     

由乙腈一步法制备乙酸丁酯的研究

以丁醇和制备丙烯腈的副产物乙腈为原料 ,采用一步法合成了乙酸丁酯。通过正交实验得到了影响反应的 4种因素。确定了最佳的工艺条件为 :催化剂的量为样品质量的 40 % ;n(CH3CN)∶ n(C4 H9OH) =1∶ 1 .0 5 ;反应温度为 1 0 5℃ ;反应时间为 8h。在此反应条件下 ,乙酸丁酯的收率为 88.8% ,纯度可达 99.5 %。并用气相色谱及红外光谱对产品的纯度进行了表征     

吹风气余热回收锅炉在我厂的应用

介绍了吹风气余热回收锅炉在兖矿鲁南化肥厂的应用情况。实践证明，系统运行稳定，取得了良好的经济效益。     

山西铝厂氧化铝生产铝土矿资源保证措施

通过扩大对铝土矿资源的对策和措施分析 ,为扩大山西铝厂氧化铝规模提供资源保障