JJS1型翻斗雨量传感器校准仪

叙述了JJS1型翻斗雨量传感器校准仪的研制、开发及解决的主要技术问题，找出了校准过程中的误差来源，分析并给出了现场校准和测试的可行性及理论依据。     

SL2-1型雨量传感器测量误差调整方法探讨

SL2—1型雨量传感器是—种在借鉴国外先进技术的基础上研发出的一种新型单翻斗雨量传感器，它以结构布局合理、科学，测量准确度高而倍受广大用户的推崇。我国气象装备部门研发的单雨量自动观测站，有相当一部分采用该雨量传感器作为测量降雨量的基本传感器。为保证全国范围内所有雨量自动观测站所观测到的雨量准确、可靠，以及其观测数据具有可比性，定期开展雨量传感器的检定与维护，将雨量观测值的误差控制在允许范围内，是气象计量保障中的一项非常重要的工作。本文从单翻斗雨量传感器的结构原理入手，重点介绍传感器的超差调整方法和日常维护，作为实际观测和检定时为参考。     

Identification of ages and determination of paeoniflorin in roots of Paeonia lactiflora Pall. From four producing areas based on growth rings

Growth rings were used to determine the root age of medicinal Paeonia lactiflora from four producing areas, and their corresponding paeoniflorin content were measured based on the identification of ages. Different P. lactiflora root samples of different ages were collected from the four major growing areas in China: Bozhou, Anhui Province; Pan'an, Zhejiang Province; Zhongjiang, Sichuan Province; and Heze, Shandong Province. The relationship between the number of growth rings and age was analyzed using hand sections and paraffin sections. The paeoniflorin content in the roots of different P. lactiflora cultivars from different growing areas was measured using high‐performance liquid chromatography (HPLC). The growth rings in the P. lactiflora roots were consistent with the age of the plant from Heze, Zhongjiang, Pan'an, whereas that for the P. lactiflora from Bozhou was one less than the age of the plant. The HPLC results show that the paeoniflorin content was highest in P. lactiflora ‘Baihuachuanshaoyao,’ followed by ‘Baihuahangshaoyao,’ ‘Honghuachuanshaoyao,’ and ‘Honghuahangshaoyao,’ ‘Bozhoushaoyao’ had the lowest levels of paeoniflorin. With increasing age, the paeoniflorin in the roots of the different P.lactiflora cultivars slowly declined or remained the same. In summary, the age of the roots of P. lactiflora from different growing areas can be determined using growth rings. The paeoniflorin content in the roots of P. lactiflora is correlated with cultivar and it was slowly declined with increasing age. Microsc. Res. Tech. 75:1191–1196, 2012. © 2012 Wiley Periodicals, Inc.     

某铁矿开拓方案探讨

某铁矿原为露天开采,露采结束后,深部存在隐伏矿体,矿体倾角较大,向下延深较深,为开采该部分矿石,结合现阶段的环境,采用胶带斜井开拓或箕斗竖井开拓哪个更合适？本公司在多方面考虑,并经过多专业人员合作,将两个开拓方案进行比较,并最终确定了合理的开拓方案。     

基于ECMWF和WRF的嘉陵江流域面雨量预报精度评估

将降雨数值预报产品运用到水文预报中已经逐渐成为提高洪水作业预报的预见期的重要手段。为充分了解ECMWF(European Centre for Medium Range Weather Forecasts)和WRF(Weather Research and Forecasting model)2种数值天气预报产品对嘉陵江研究区面雨量预报的预报精度和误差分布,且为增强洪水预报精度的稳健性提供科学支持,采用TS评分、空报率、漏报率、正确率等指标,对嘉陵江地区7个气象分区内的2016年汛期面雨量预报结果进行了检验,分析了不同分区内各检验指标与预报时效的关系。结果表明:ECMWF数值预报产品和WRF数值预报产品均可用于该地区晴雨预报,且2种产品的预报精度随降水等级的增大呈增大趋势,随预报时效的增加呈减小趋势。综合而言,ECMWF数值预报产品对嘉陵江研究区的预报效果更好。     

基于全年动态负荷分析的冷热源方案设计

以北京某酒店为例,对该建筑进行全年逐时动态负荷计算分析。根据计算分析结果,确定制冷季梯级利用离心式冷水机组、螺杆机组和空气源热泵机组作为空调系统冷源,供热季利用板式换热器和空气源热泵机组作为空调系统热源,以达到系统节能的目的。     

粗析2009—2014年年均增长率达到10%的杀虫剂品种

本文为江苏省农药研究所股份有限公司陈燕玲撰写的"2014年世界杀虫剂市场概况"(见《现代农药》Vol.15,No.2)一文的补充。并对2009—2014年年均增长率达到10%的杀虫剂较大品种予以粗浅的分析。     

中国塑编产业回归理性发展2012年回顾及2013年展望

本年度报告在回顾塑编产业经过几年高速炽热发展后，到2012年已经下行回归理性发展。文中用数据论述了本年塑编行业平稳发展的产业全貌。同时论述了本年塑编产业的热点问题和面临的困境。最后预测了今年塑编产业发展趋势和热点问题。     

Climate Change and Future Long-Term Trends of Rainfall at North-East of Iraq

Iraq is facing water shortage problem despite the presence of the Tigris and Euphrates Rivers. In this research, long rainfall trends up to the year 2099 were studied in Sulaimani city northeast Iraq to give an idea about future prospects. The medium high （A2） and medium low B2 scenarios have been used for purpose of this study as they are more likely than others scenarios, that beside the fact that no climate modeling canter has performed GCM （global climate model） simulations for more than a few emissions scenarios （HadCM3 has only these two scenarios） otherwise pattern scaling can be used for generating different scenarios which entail a huge uncertainty. The results indicate that the average annual rainfall shows a significant downward trend for both A2 and B2 scenarios. In addition, winter projects increase/decrease in the daily rainfall statistics of wet days, the spring season show very slight drop and no change for both scenarios. However, both summer and autumn shows a significant reduction in maximum rainfall value especially in 2080s while the other statistics remain nearly the same. The extremes events are to decrease slightly in 2080s with highest decrease associated with A2 scenario. This is due to the fact that rainfall under scenario A2 is more significant than under scenario B2. The return period of a certain rainfall will increase in the future when a present storm of 20 year could occur once every 43 year in the 2080s. An increase in the frequency of extreme rainfall depends on several factors such as the return period, season of the year, the period considered as well as the emission scenario used.