Analysis of the global T_m–T_s correlation and establishment of the latitude-related linear model

In this study,the correlation between Tm,a key variable in GNSS water vapor inversion,and surface temperature(Ts)was calculated on a global scale based on the global geodetic observing system(GGOS)atmosphere Tmdata and European centre for medium-range weather forecasts(ECMWF)surface temperature data.The results show that their correlation is mainly affected by latitudes,and the correlation is stronger at high latitudes and weaker at low latitudes.Although the correlation is relatively weak in the tropic areas,the temperature changes so little in a year in these areas that we can still achieve good Tmresults by linear regression model.Based on these facts,‘‘GGOS atmosphere’’Tmdata and ECMWF Tsdata from 2005 to2011 were used to establish the global latitude-related linear regression model.The new model has root mean square error(RMSE)of 3.2,3.3,and 4.4 K,respectively,compared with respect to the‘‘GGOS atmosphere’’data,COSMIC data,and radiosonde data and is more accurate than the Bevis Tm–Tsrelationship.     

Theoretical advances of the structures and catalytic activities of small-sized gold nanoclusters

Gold nanoclusters exhibit extraordinary catalytic activities,but the dominating factor is still unclear due to the complexity of the structures.In this review,we briefly summarized the recent theoretical progress on their structures and catalytic activities.Combining the experimental and theoretical efforts,the structures of small-sized gold clusters have been explored systematically.Based on the determined structures,factors that influence the catalytic capabilities of small-sized gold clusters(Au_(16)-Au_(35))are studied using CO oxidation asa probe.The preadsorption energies of CO and O_2are found strongly correlated with catalytic activities,which could be affected by the clusters'geometries,sizes,and charge distributions.In addition,the presence of water could significantly lower the activation energy barrier of O_2 dissociation to enhance the clusters'catalytic activities.     

传统文化视野下的“水泊梁山”及其局限性分析

意识形态的混乱与吏治败坏是造成中国传统社会失范的两大因素。古典小说《水浒传》艺术地呈现了北宋末年社会存在的失范状况,同时,它又根据中国传统文化所提供的小康社会的信息,在梁山上建立起一个乌托邦性质的小社会。但是,由于传统文化特别是"忠义"道德观念的局限性,好汉们进行的秩序重建是不完善的,它从根源上无法解决导致社会失范的因素。     

山东运河区域经济对《水浒传》成书时代上限的有限界定

同宋江起义历史本事及以宋江起义为素材的各种文艺作品相比,《水浒传》中的宋江起义有明显的变化:规模上扩大了,改变了流寇主义的斗争形式,在山东梁山建立了根据地。起义队伍规模的扩大及于山东梁山建立根据地也相应地对山东运河区域提出要求———鲁西地区提供相当程度的物质供应;而梁山起义军在短时间内筹集到300万石军粮决定了《水浒传》产生时期与山东运河区域的经济繁荣密不可分。考察山东运河区域经济的历史状况,能够得出《水浒传》成书的上限在明永乐宣德年之后的结论。     

浅谈城市污水回用

城市污水回用是解决水资源短缺的有效途径。本文从水资源的短缺和城市水环境的污染,论述了城市污水回用的重要性,并简单介绍了城市污水净化技术和回用现状。     

化乐勘探区煤矿水文地质特征及充水因素分析

以化乐勘探区煤矿为例,对化乐勘探区煤矿的水文地质特征、含隔水层特征、地下水动态及含水层间的水力联系等因素进行分析,并分析了化乐勘探区煤矿的充水因素。     

矿井水系统集中控制探索及实施

介绍了煤矿水系统各自为政的现状,针对目前存在的问题,提出了矿井水系统集中控制的理念,阐述了实现矿井水系统集中控制的构架与功能。     

关于加快小城镇（市）建设中水利问题的探讨

水利作为城市基础设施的一个重要方面，它承担着城市防洪、供水、排水、航运、水环境等功能，是城市生态系统和景观系统的重要因素。本文就当前小城镇（市）建设中水利存在的主要问题及解决方法进行了初步探讨，仅供参考。     

水幕消防水带应用研究

本文介绍了水幕消防水带在防火分隔、降低辐射热、冷却防火分隔设施、稀释有毒气体浓度、节省消防警力等方面的运用,并结合我国现行防火灭火实际,提出了水幕消防水带在不同场所的应用指标以及应用方式。     

哈尔滨市城市水资源与可持续利用

本文在分析市区水资源的基础上，着探讨了水资源开发利用存在的问题及解决途径。