尾矿库自动监测系统设计

随着金属工业和科技的迅猛发展,尾矿库安全生产和环境安全等过程中暴露出的问题日益显现,而我省尾矿库自动监测方面起步较晚。本文依据《尾矿库安全监测技术规范》的相关要求,针对在建尾矿库溃坝原因、监测指标、安全监测与预警系统体系结构和各监测项目实施方案进行比较和探索。进一步说明尾矿库在线监测系统的重要意义。     

基于IPA模型的广东科学中心游客感知研究

设计旅游特征感知因子量表,通过问卷调查获取第一手资料,采用SPSS作为数据分析工具,运用重要性-绩效分析模型(IPA)和比较研究法,分析和讨论游客对广东科学中心旅游特征的感知.研究结果显示,教育价值、科技价值、可体验性、可参与性、更新速度和解说服务是科技馆特有的主要旅游特征,这些特征对科技馆未来的工作重点和营销资源配置战略具有重要的启示作用.     

Review on researchesof nitrous oxide inthe Southern Oceanand relative new technologies

Nitrous oxide is an important greenhouse gas,which has a long lifetime of about 120 years and has a 310 times greenhouse effect than CO₂. Since the industrial revolution, the atmospheric N₂O concentration has increased significantly by 20%. Ocean is a net source, about 1/3 of total oceanic souce. Southern Ocean is an important part of the global ocean system, has a unique hydrological characteristics. So far it is regarded as a significant natural source to the global N₂O flux according to the model studies. However,the field work is very limit, due to the fierce in situ conditions. The importance of N₂O reseaches of Southern Ocean, progresses of nitrous oxide researches, especially new technologies applied to underway N₂O measurements in the Southern Ocean are reviewed. The advance of field, model studies and their problems or uncertainties that need to be resolved are also discussed. The using of stable isotope methods will provide powerful tools for marine N₂O mechanism. Development of high precision monitoring technology is generally the driving force of future research. Developing techniques of laser spectroscopy in marine N₂O studies and measurment of N₂O in sea ice will provide powerful tools to differeciate the N₂O source sink characteristic, constrain their budget and formation mechanism in region such as Southern Ocean.     

江山如此多娇——2011年中美非开挖行业发展回顾与展望

2011年,发达国家受主权债务危机影响,新兴经济体通货膨胀压力上升,各国经济增速普遍下滑在这样的大环境下,我国非开挖行业仍取得了骄人的成绩。本文首先概述了2011年在我国非开挖行业影响较大的重大事件,然后较详细地介绍了中关两国非开挖市场的调查情况,包括中美水平定向钻机情况和美国市政管线建设投资情况,最后对未来我国非开挖行业的发展趋势进行了预测。     

富宁阳文冲金矿硫化矿石选冶性能研究

阳文冲金矿矿石类型以硫化矿为主,金以类质同像或极微粒机械混入物的形式赋存在黄铁矿及毒砂中,适合于浮选。处理后,氰化浸出率为83.04%。金总回收率70.26%,属较易选矿石。     

中国虚拟天文台体系结构

虚拟天文台是天文技术和信息技术结合的产物，其体系结构体现着与最新信息技术的结合。本文首先介绍虚拟天文台的工作流程和原理，进而介绍了虚拟天文台体系结构研究的最新进展。以网格技术为基础，给出了中国虚拟天文台的层次式体系结构和服务式体系结构。     

基于RTK用户的测绘产品质量控制

文章从RTK测量工作流程出发,对RTK关键工序做了重点阐述;然后根据作业流程结合GPS定位原理,对可能产生误差的主要来源作了详细分析,并站在RTK终端用户的角度,将各种误差来源重新归纳、分类;最后引入质量控制环节,对RTK测量各个环节的数据质量进行了必要的分析和控制,使RTK测绘产品的可靠性及精确度得到保证。本文在质量控制方面成功的经验对于其它测绘产品的生产作业具有一定的借鉴意义。     

中美非开挖行业市场调查与分析

文中较详细地介绍了中美两国近两年进行的非开挖市场调查情况,主要包括非开挖施工设备（水平定向钻机和微型顶管机）的增长情况和各类非开挖施工方法在污水管道和自来水管道铺设或修复中的应用情况,并通过这些数据比较了中国非开挖行业存在的差距,分析了中国非开挖行业的市场前景。     

Impacts of Migration on Urban Environmental Pollutant Emissions in China: A Comparative Perspective

In recent years,researchers have devoted considerable attention to identifying the causes of urban environmental pollution.To determine whether migrant populations significantly affect urban environments,we examined the relationship between urban environmental pollutant emissions and migrant populations at the prefectural level using data obtained for 90 Chinese cities evidencing net in-migration.By dividing the permanent populations of these cities into natives and migrants in relation to the population structure,we constructed an improved Stochastic Impacts by Regression on Population,Affluence and Technology model(STIRPAT)that included not only environmental pollutant emission variables but also variables on the cities’attributes.We subsequently conducted detailed analyses of the results of the models to assess the impacts of natives and migrants on environmental pollutant emissions.The main findings of our study were as follows:1)Migrant populations have significant impacts on environmental emissions both in terms of their size and concentration.Specifically,migrant populations have negative impacts on Air Quality Index(AQI)as well as PM2.5 emissions and positive impacts on emissions of NO2 and CO2.2)The impacts of migrant populations on urban environmental pollutant emissions were 8 to 30 times weaker than that of local populations.3)Urban environmental pollutant emissions in different cities differ significantly according to variations in the industrial structures,public transportation facilities,and population densities.     

海洋能开发利用发展对策研究

海洋能具有储量巨大、绿色清洁等特点,是全球应对气候变暖、调整能源结构的重要选择之一,欧、美等发达海洋国家非常重视发展海洋能,将其作为战略性资源进行技术储备。我国海洋能资源既有着总量丰富、种类齐全、区域性强等优势,也存在密度较低的劣势。在财政部、科技部、国家海洋局等的大力支持下,我国海洋能利用技术取得了明显进步,潮流能和波浪能等代表性技术和装置经历了长期海试,为稳定示范应用奠定了坚实的基础。在建设海洋强国、实施国家能源战略、发展战略性新兴产业、推进生态文明建设、21世纪海上丝绸之路的背景下,随着我国海洋能核心关键技术的不断突破,海洋能装备制造及运行维护必将成长为对经济社会长远发展具有重大引领带动作用的战略性新兴产业。