我国粮油标准现状及问题分析研究

介绍了我国粮油标准体系的发展历程,以及目前我国粮油标准体系的构成和特点,分析了我国粮食标准及标准化存在的主要问题,并对完善我国粮油标准化工作提出了相应的建议。     

Radiation induced decontamination of Cr(Ⅵ), Cu(Ⅱ) and phenol in some tannery effluents

Industrialization has led to a number of environmental problems, such as release of toxic metals and other toxic organic and inorganic compounds to the environment. Among all, the rapid expansion of leather related industries in Pakistan have resulted in considerable environmental problems and effluents from processing of both domestic and imported hides and skins have increased pollution to alarming levels. Some tannery effluents of Peshawar area investigated in the present study showed high concentrations of Cr(Ⅵ) (2.7-12.6 mg/L), Cu(Ⅱ) (2.6-11.4 mg/L) and phenol (0.1-4.2 mg/L). These contaminants are very toxic and must be removed from effluents before releasing into water bodies. A new technique of gamma irradiation has been investigated to decrease the load of COD and concentrations of Cr(Ⅵ), Cu(Ⅱ) and phenol associated with tannery effluents to the permitted values. It was observed that concentration of Cr(Ⅵ) in the effluents can be brought to the permitted level by applying radiation dose of 3 kGy. A radiation dose of 2.5 kGy was required to remove more than 95% of Cu(Ⅱ) and 100 % degradation of phenol in tannery effluents could be achieved by only one kGy of radiation dose.     

线加速度计的现状与发展趋势综述

讨论了线加速度计的基本原理、特点和主要技术性能指标,介绍了国内外的研制情况,并讨论了线加速度计未来的发展趋势.     

木工高速电主轴技求

介绍了木工高速电主轴及其主要技术特点和基本参数以及木工高速电主轴技术的国内外研究现状和应用.     

香蕉茎纤维的现状与开发应用前景

介绍了香蕉茎纤维的发展历史、开发现状及其纤维的制取方法、微细结构、化学组成和物理机械性能等。我国是香蕉生产大国,香蕉茎纤维原料来源丰富,经加工后的茎纤维具有强度高、伸长小、质量轻、吸水性高、吸湿放湿快、易降解等优点。香蕉茎纤维的物理机械性能能满足纺织加工的要求,经纯纺或混纺后的织物服用性能好,因此香蕉茎纤维在传统的纺织等领域内将有极大的发展潜力。     

Micro-grid design and life-cycle assessment of a mountain hut's stand-alone energy system with hydrogen used for seasonal storage

Mountain huts, as special, stand-alone, micro-grid systems, are not connected to a power grid and represent a burden on the environment. The micro-grid has to be flexible to cover daily and seasonal fluctuations. Heat and electricity are usually generated with fossil fuels due to the simple on-off operation. By introducing renewable energy sources (RESs), the generation of energy could be more sustainable, but the generation and consumption must be balanced. The paper describes the integration of a hydrogen-storage system (HSS) and a battery-storage system (BattS) in a mountain hut. The HSS involves a proton-exchange-membrane water electrolyser (PEMWE), a hydrogen storage tank (H₂ tank), a PEM fuel cell (PEMFC) and a BattS consisting of lead-acid batteries. Eight micro-grid configurations were modelled using HOMER and evaluated from the technical, environmental and economic points of view. A life-cycle assessment analysis was made from the cradle to the gate. The micro-grid configurations with the HSS achieve, on average, a more than 70% decrease in the environmental impacts in comparison to the state of play at the beginning, but require a larger investment. Comparing the HSS with the BattS as a seasonal energy storage, the hydrogen-based technology had advantages for all of the assessed criteria.     

220t/h循环流化床锅炉运行12年的安全可靠性与经济性分析

对一台220 t/h循环流化床锅炉运行12年的安全可靠性与运行经济性指标进行了分析总结,也是对循环流化床锅炉发展十多年历程的一个总结。结果显示锅炉投运之初存在的问题和故障较多,安全可靠性和运行经济性指标均较低,随着循环流化床锅炉技术的不断创新和运行的不断优化,安全可靠性和运行经济性指标不断提高,目前各项指标趋于稳定。为大容量高参数循环流化床锅炉技术创新和运行优化提供参考数据。     

再论凹凸棒石黏土应用现状及高附加值产品开发

就凹凸棒石黏土（下称凹土）应用现状及高附加值产品开发,在对国内外凹土研究、应用、开发、产品营销等的对比基础上,结合盱眙县“十一五”凹土产业科技发展规划,作进一步讨论,以期对凹土产业发展有更大的推动。     

湖南监理行业现状分析及对策研究

对湖南建设监理行业的现状、困境及应采取的对策进行了论述。     

广东铸铁工业的现状与发展趋势

分析了广东省铸铁工业发展的现状和面临的形势,对几种先进的铸造工艺技术特点及其应用作了较详细的介绍,阐述了铸铁工业发展中需要注意的问题,并展望了发展的方向。