水煤浆加压气化技术的进展

主要在分析总结GE(Texaco)气化技术、多喷嘴对置式气化技术工艺特点和工业运行状况的基础上,分别从工艺技术、气化炉关键部件使用寿命、技术指标等方面对这两种水煤浆加压气化技术进行了分析。     

宽带城域网组网方案

论文阐述了宽带城域网的概念，特征和结构，还阐述了IP overATM,IP over SDH,IP overWDM/DWDM,IP over RPR,IP over GE,IP overMSPP等宽带城域网主流组网方案，最后阐述了组网方案选择的原则以及在电力系统通信中的应用。     

基于GE300变频恒压供水控制系统改造设计

某生活小区原供水系统依靠阀门实现水量控制,水泵在额定状态下运行,机械磨损较大,使用成本高。通过采用GE300和变频器组合的控制系统改造,完成系统的软硬件设计及参数设置,能自动控制水泵投入的台数和电机转速,达到恒压供水目的。运行结果表明,该系统具有压力恒定,机械损耗小,节能效果显著等优点。     

A novel approach to mapping land conversion using Google Earth with an application to East Africa

Effective conservation planning relies on the accurate identification of anthropogenic land cover. However, accessing localized information can be difficult or impossible in developing countries. Additionally, global medium-resolution land use land cover datasets may be insufficient for conservation planning purposes at the scale of a country or smaller. We thus introduce a new tool, GE Grids, to bridge this gap. This tool creates an interactive user-specified binary grid laid over Google Earth's high-resolution imagery. Using GE Grids, we manually identified anthropogenic land conversion across East Africa and compared this against available land cover datasets. Nearly 30% of East Africa is converted to anthropogenic land cover. The two highest-resolution comparative datasets have the greatest agreement with our own at the regional extent, despite having as low as 44% agreement at the country level. We achieved 83% consistency among users. GE Grids is intended to complement existing remote sensing datasets at local scales.     

露天矿卡车三维助驾及接近预警系统

露天矿汽车运输是大型露天矿主要运输方式之一,是影响露天矿生产能力和经济效益的关键因素,其事故率和危害性都远高于其他开拓运输方式的露天矿事故。针对露天矿卡车司机缺乏可靠运输信息可能引发车辆碰撞事故,分析了露天矿卡车盲区分布特征及由此造成的露天矿运输安全隐患,通过对可行技术分析和接近预警需求的分析,综合运用三维定位技术、三维车辆构模技术、矿区三维数字地图定制技术、无线网络传输技术,实现了以GE COM API为三维图形引擎的露天矿车辆三维助驾及接近预警系统。通过在某露天煤矿实际应用,验证了此技术的可行性和稳定性,为露天矿安全运输提供了先进的参考技术。     

基于FAHP和GE矩阵的制造型企业新产品选择研究

针对制造型企业战略转型时期选择新产品决策问题,从战略角度出发提出运用FAHP和GE矩阵相结合的方法对新产品进行综合评价和投资优先顺序定位。此方法将产品的评价指标按照GE矩阵的两个维度进行分类,分析了产品的行业吸引力和企业生产该产品的相对竞争力,并进行指标层次细分,使指标更加贴近生产实际。指标权重设置更加清晰准确,同时更能体现产品结构和企业战略的统一性。     

基于GE智能控制平台的太阳能跟踪控制系统设计

为了提高对太阳能的利用率,提出了一种基于GE智能平台的太阳能跟踪系统的设计与实现方案。该方案采用Genius总线网络结构,以Rx3i作为核心控制器,以步进电机作为执行机构,采用视日运动轨迹跟踪和光电跟踪相结合的方式实现对太阳的方位和俯仰角的双轴自动跟踪。实验测试结果表明,该系统实现了对太阳光照的实时自动跟踪,系统运行可靠、稳定,达到了提高太阳能发电利用率的目的。     

The efficacy of grape seed extract,citric acid and lactic acid on the inactivation of Vibrio parahaemolyticus in shucked oysters

The efficacy of grape seed extract (GE), citric acid (CA) or lactic acid (LA) on the inactivation of Vibrio parahaemolyticus in shucked oysters was studied. The minimum inhibitory concentration (MIC) of GE, CA or LA against V. parahaemolyticus in TSB-1% NaCl was also determined. The shucked oysters were artificially inoculated with V. parahaemolyticus, the inoculated shucked oysters (25 g) were then dipped in solution of GE (0.0, 10.0, 20.0, 50.0, 100, 200, 300 and 500 mg mL⁻¹), CA (0.0, 5.0, 10.0, 15.0, 20.0, 50.0, 100, 200 and 300 mg mL⁻¹) or LA (0.0, 1.0, 5.0, 10.0, 15.0, 20.0, 50.0, 100 and 150 mg mL⁻¹) for 10 min. The population of V. parahaemolyticus in shucked oysters was determined. The MICs of GE, CA or LA against V. parahaemolyticus were 10.0, 5.0 or 1.0 mg mL⁻¹, respectively. A 500, 300 or 150 mg mL⁻¹ GE, CA or LA solutions were needed to reduce the population of V. parahaemolyticus to below the detection level (1.0 log g⁻¹) in shucked oysters.     

The improved CO2 capture system with heat recovery based on absorption heat transformer and flash evaporator

Absorption heat transformer (AHT) and flash evaporator (FE) are used to reduce the heat consumption of CO₂ capture processes and an AHT–FE-aided capture system is proposed. Analyses are carried out to verify the effectiveness in reducing heat consumption. Compared with the base CO₂ capture system of 3000 t/d CO₂ capture capacity from a 660 MW coal-fired power unit, the AHT–FE-aided capture system reduces the heat consumption from 3.873 GJ/tCO₂ to 3.772 GJ/tCO₂, and the corresponding energy saving is 2.62%. The economic analysis shows that the annual profit would be 2.94 million RMB Yuan. The payback period of the AHT–FE-aided capture system is approximately 2.4 years. Therefore, the AHT–FE-aided capture system is both economically and technically feasible for improving the CO₂ capture energy performance.