川中丘陵区地表干湿长程相关性及影响因素研究（研究生论坛）

为探究川中丘陵区干湿动态动力学机制,提供旱涝预测的理论依据。根据川中丘陵区8个气象站点1958~2013年逐日气象资料,采用Penman—Monteith 模型计算潜在蒸散量,构建出湿润指数。在此基础上,基于去趋势波动分析方法（DFA）,对逐月、分季节、极端干湿湿润指数进行长程相关性分析,并探讨了影响湿润指数长程相关性的气象因子。结果表明：除南充、遂宁外,其余地区逐月湿润指数变化长程相关,并非完全随机;分季节与极端干湿湿润指数均具有长程相关性;对于不同季节而言,长程相关性以夏季最强,秋、冬两季次之,春季最弱,对于极端气候而言,极端湿润长程相关性强于极端干旱;通过对湿润指数与气象因子长程相关性一致性分析,降水标度指数与湿润指数标度指数呈显著正相关。     

基于中心复合设计的振荡热管传热性能分析

Oscillating heat pipes （OHPs） are very promising cooling devices. Their heat transfer performance is affected by many factors, and the form of the relationship between the performance and the factors is complex and non-linear. In this paper, the effects of charging ratio, inclination angle, and heat input and their interaction effects on heat transfer performance of a looped copper-water OHP are analyzed. First, suppose that the relationship between the response and the variables approximates a second-order model. And use the central composite design to arrange the experiment. Then, the method of least squares is used to estimate the parameters in the second-order model. Finally, multivariate variance analysis is used to analyze the model. The results show that the assumption is right, that is to say, the re- lationship is well modeled by a second-order function. Among the three main effect variables, the effect of inclination angle is the most significant, but their interaction effects are not significant. In the range of the considered factors, both the optimum charging ratio and the optimum inclination angle increase as the heating water flow rate increases.     

中央空调的水处理

本文扼要介绍了中央空调循环冷却水和冷冻水系统中常见的问题及其原因,并对冷却水和冷冻水的处理程序作了初步的阐述.     

中央空调制冷机的化学清洗

阐述了中央空调制冷机结垢的类型及其产生的原因和危害,分析了中央空调制冷机的冷媒水系统、冷却水系统的化学清洗技术和操作方法.     

新形势下做好长江流域水土保持监测工作的思考

基于长江流域水土保持的监测调研工作,结合我国当前社会、经济发展新形势的总体要求,针对开展好流域水土保持监测工作这一课题,从完善水土流失动态监测工作、构建应急监测体系、强化机构职能定位、推进先进技术和设施设备应用、优化流域网络体系顶层设计、探究水土流失监测综合性指标设置等方面开展了一些有益的探索,以利于更好地开展新形势下的水土保持监测工作。     

四川磷矿制取饲料级脱氟磷酸三钙工艺研究

采用云南化工研究院开发的工业性试验成果，对四川磷矿进行了制取饲料级脱氟磷酸三钙工艺评价试验研究。结果表明：工艺路线、工艺条件及脱氟剂(AAA)均能满足要求，磷的转化率大于93％，脱氟率大于95％，产品质量指标符合企业标准(Q／YXSJ01—1997)。     

冶钢宾馆中央空调的化学清洗

通过对中央空调冷冻水、冷却水两个系统结垢原因的分析，简单论述了化学清洗的机理、方式方法，以及清洗在维护中央空调系统正常运行中的重要性。     

阳宗海流域冬季典型农村污水污染特征及水质评价

为揭示阳宗海流域不同类型农村污水各污染指标的影响因素和分布特征,选取云南省的海晏村(传统型)和大营村(集镇型)的污水进行水样采集,通过方差分析研究其不同污染指标的浓度变化以及不同类型农村污水水质的差异性,并运用主成分分析法对污水进行水质评价。结果表明:阳宗海流域海晏村污水中的TN、COD均明显超过了城镇污水处理厂污染物排放二级标准,大营村的TP、TN、COD均明显超过了二级标准;pH值与氧化还原电位都是农村污水中污染物浓度的重要影响因子;两村的水质具有显著的差异性;传统型农村的水质比集镇型农村的要好,说明对阳宗海流域造成污染风险更大的是集镇型农村污水。     

A comprehensive approach to evaluating watershed models for predicting river flow regimes critical to downstream ecosystem services

Selection of strategies that help reduce riverine inputs requires numerical models that accurately quantify hydrologic processes. While numerous models exist, information on how to evaluate and select the most robust models is limited. Toward this end, we developed a comprehensive approach that helps evaluate watershed models in their ability to simulate flow regimes critical to downstream ecosystem services. We demonstrated the method using the Soil and Water Assessment Tool (SWAT), the Hydrological Simulation Program–FORTRAN (HSPF) model, and Distributed Large Basin Runoff Model (DLBRM) applied to the Maumee River Basin (USA). The approach helped in identifying that each model simulated flows within acceptable ranges. However, each was limited in its ability to simulate flows triggered by extreme weather events, owing to algorithms not being optimized for such events and mismatched physiographic watershed conditions. Ultimately, we found HSPF to best predict river flow, whereas SWAT offered the most flexibility for evaluating agricultural management practices.     

基于网络中控技术的多媒体教室管理与监控系统的应用

设计基于网络中控技术的多媒体教室管理与监控系统,该系统能够将高校各个独立的多媒体教室管理与监控系统关联到一起进行管理,实现集远程管理、监控、维护于一体的应用系统,提高高校多媒体应用水平。