掺气减蚀设施水力计算的改进

结合小湾工程泄洪洞模型试验进行了11种挑跌坎型和6级流量的试验观测，据此提出了特别适用于大单流量条件的射流出射角修正式，提出了射流近底流速的选取原则.与实验资料对比证明本文计算方法有足够精度。     

吸附制冷循环的热力计算及热力学评价方法探讨

在化工吸附，吸附热力学及Polanyi吸附位势理论的基础上，介绍吸附制冷基本型循环，推演其参数坐标图，进而分析，给出其主要性能指标的热力计算，然后以热力学的逆卡诺循环和内可逆三热源循环模型为指针，对此制冷循环进行考察。并结合热力计算对其热力学完善性做出评价，从而给出了吸附制冷基本型循环合适的热力学评价方法。     

论高层建筑中央空调水系统水压试验的步骤

通过对中央空调水系统安装的特点分析,确定了应用效果良好的试压步骤。     

碾压混凝土坝施工进度与质量控制的新措施

碾压混凝土重力坝和拱坝由于连续施工的坝体混凝土体积大，施工期间需要采取较为严格的温度控制措施，而所采取的温控措施是否有效，目前尚没有一个能够用于实际施工过程的快速有效的评估方法和方式，不能根据已施工坝体内的实际情况来控制施工进度和质量。利用分布式光纤温度测量系统来快速地获得坝体混凝土内部的大量温度信息，进而实际标定温度仿真程序并通过标定过程模拟拟施工的连续碾压层，以检验其温控措施的有效性。通过坝体内部的温度、温度变化速率和梯度来达到实时控制坝体碾压上升速度、坝面和仓面养护、以及冷缝灌浆处理等目的。     

Netware的数据封锁机制与应用程序设计

文章较详细地讨论了Ｎｅｔｗａｒｅ的数据封锁机制，并介绍了Ｎｅｔｗａｒｅ应用程序的设计方法。     

木犀科植物花粉的扫描电镜研究

植物花粉的形态特征具有种属特异性。本文用扫描电子显微镜观察了木犀科(Oleaceae)的六属八种植物花粉的形态特征。结果表明,除迎春有个别四萌发沟外,其它花粉都是三沟型,外壁纹饰均为网状。但各种植物花粉的细微形态仍有明显差异。因此,用扫描电镜观察研究植物花粉的亚微形态特征,可为植物分类提供一些必要的形态依据。     

Simulation study of peak junction temperature and power limitationof AlGaAs/GaAs HBTs under pulsed and CW operation

The authors have used a 3-D transmission-line matrix (TLM) modeling method to study the junction temperature distribution and power limitation of device geometries with multiple embedded heat sources. Peak values of the junction temperature against the dissipated power density under both pulsed and CW operation are presented for a typical power AlGaAs/GaAs HBT structure. These data should facilitate the rapid determination of junction temperature for a given output power, which is of paramount importance in power device design     

应用人工神经网络优化五点法水平井井网

水平井直井联合布井方式越来越多地应用到油田的实际开发中，但是井网的选择与优化方面的研究比较少，特别是没有根据不同开发阶段变化的生产动态对水平井井网进行优化。应用人工神经网络技术，在进行数值模拟计算的基础上，制作样本并训练网络，可预测任意面积、任意水平井长度下的五点法水平井井网在不同开发阶段的生产动态，优化出不同生产时间和不同井网面积条件下最优井网穿透比，即生产10a时最优井网穿透比为0．55～0．8。与数值模拟结果进行对比，最大误差在1％以内，表明这种方法既快速简便又具有较高的精确性，可以有效地指导五点法水平井井网优化设计。     

对HIC试验中两种不同腐蚀介质酸碱度的探讨

HIC是腐蚀试验中常用的检测方法,用来测评材料在含硫化氢环境中对氢离子敏感性大小.其包含两种不同的腐蚀介质,不同的腐蚀介质中酸碱度是不一样的,腐蚀介质的酸碱度对试验结果有较大的影响,为此,运用电离平衡理论,计算并分析两种不同腐蚀介质电离平衡前后的氢离子浓度变化,得出动态反应平衡时氢离子浓度的关系式,从而获得介质中精确的氢离子浓度,并对腐蚀介质中相关离子进行了探讨,为进一步探究相关环境中的腐蚀机理提供了依据.     

Evaluation of constructed wetlands by wastewater purification ability and greenhouse gas emissions.

Domestic wastewater is a significant source of nitrogen and phosphorus, which cause lake eutrophication. Among the wastewater treatment technologies, constructed wetlands are a promising low-cost means of treating point and diffuse sources of domestic wastewater in rural areas. However, the sustainable operation of constructed wetland treatment systems depends upon a high rate conversion of organic and nitrogenous loading into their metabolic gaseous end products, such as N2O and CH4. In this study, we examined and compared the performance of three typical types of constructed wetlands: Free Water Surface (FWS), Subsurface Flow (SF) and Vertical Flow (VF) wetlands. Pollutant removal efficiency and N2O and CH4 emissions were assessed as measures of performance. We found that the pollutant removal rates and gas emissions measured in the wetlands exhibited clear seasonal changes, and these changes were closely associated with plant growth. VF wetlands exhibited stable removal of organic pollutants and NH3-N throughout the experiment regardless of season and showed great potential for CH4 adsorption. SF wetlands showed preferable T-N removal performance and a lower risk of greenhouse gas emissions than FWS wetlands. Soil oxidation reduction potential (ORP) analysis revealed that water flow structure and plant growth influenced constructed wetland oxygen transfer, and these variations resulted in seasonal changes of ORP distribution inside wetlands that were accompanied by fluctuations in pollutant removal and greenhouse gas emissions.