白酒酿造的绿色化与智能化研究现状及展望

信息化技术的应用促进了我国工业的高速发展,智能制造、绿色制造等领域成为工业、企业的重要发展方向。当前,白酒酿造的绿色酿造与智能化如雨后春竹,得到蓬勃发展。越来越多的白酒企业纷纷开始对白酒酿造的绿色化与智能化进行探索及尝试,有些企业已经形成适用于本企业的绿色化与智能化酿造生产模式。结合金种子酒业的项目研究及其生产实践,从概念、应用领域、发展现状、发展趋势等方面,概述了现阶段白酒行业在酿造绿色化与智能化等方面的应用及发展现状,指出绿色化与智能化是中国白酒产业稳步发展的必经之路,以期为白酒酿造的绿色化与智能化提供参考。     

基于微信平台的混合式教学模式研究与实践

随着互联网技术的不断发展,微信已经成为人们生活、学习和工作的一部分。通过充分利用微信平台的优势,采用混合式的教学方法将传统的线下教学与网络线上教学结合起来,构建基于微信平台的混合式教学模式,能加强师生间的交流,提高学生学习的积极性,提升学习效果。     

六相永磁力矩伺服电机气隙磁场优化

为了提高永磁力矩伺服电机的转矩性能,研究了气隙磁场波形对六相永磁力矩伺服电机转矩的影响.提出采用准梯形波气隙磁场提高气隙磁密基波幅值,增加电机转矩密度的方法.分析了准梯形波气隙磁场六相永磁力矩伺服电机能够实现高转矩密度和低转矩脉动的原因,给出准梯形波气隙磁场六相永磁力矩伺服电机的具体设计方法.在永磁材料用量和供电电流相...     

Spatial distribution of chromium in soils contaminated by chromium-containing slag

To evaluate the metal chromium (Cr) contamination of soil at a chromium-containing slag site by ferrochromium production, the contaminated sites, under slag heap, in the vicinity of slag heap and arable soils near the outlet of sewer channel, and unpolluted site 5 km away from one ferroalloy plant in Hunan Province, China, were selected. The concentrations of total Cr and water soluble Cr in bulk soil samples and profile depth samples were determined. The results show that the soils in the vicinity of slag heap have the highest total Cr content followed by the soils under the slag heap and near the outlet of sewer channel of the factory. The mean concentrations of total Cr in the top soils at above three contaminated locations exceed the critical level of Secondary Environmental Quality Standard for Soil in China by 3.5, 5.4 and 1.8 times. In most Cr polluted soils, total Cr has a relative accumulation in soil depth of 40-60 cm, but this trend is not found in unpolluted soils. The average concentrations of water soluble Cr (Ⅵ) in top soils under slag heap and in the vicinity of slag heap are 176.9 times and 52.7 times higher than that in the uncontaminated soils, respectively. However, water soluble Cr (Ⅵ) contents in soils near sewer channel are all low and the values are close to that in the uncontaminated soils. Although water soluble Cr (Ⅵ) content in soil profiles decreases with soil depths, it in soils under slag heap maintains a high level even at a depth of 100-150 cm. The results imply that the transportation of Cr (Ⅵ) can result in a potential risk of groundwater system in this area.     

马钢环境自动监测及监控平台系统的研发和应用

介绍了马钢环境自动监测及监控平台系统的设计和应用,该系统采用了.net、sql server2005软件的居多新特性,并结合马钢集团环境监测的业务特点,充分对其进行了深层次挖掘,使其系统完成了污染源的相关数据的自动收集和处理;而且系统强大的数据统计和分析功能可以为有关管理部门提供决策依据,增加了环境管理过程中决策制定工作的科学性、合理性和可靠性。     

Inhibitory effect of Cr（Ⅵ） on activities of soil enzymes

To evaluate the influence of various Cr(VI) concentrations (0.05, 0.25, 0.50, 1.00 and 2.00 g/kg) on the activity of soil enzymes, the activities of catalase, polyphenol oxidase, dehydrogenase, alkaline phosphatase in soils were investigated in the incubation experiment with a period of 35 d. The results indicate that all the tested Cr(VI) concentrations significantly inhibit dehydrogenase activity by over 70% after 35 d. The activity of alkaline phosphatase is slightly inhibited during the whole experiment except for on the day 7. Cr(VI) has no obvious effect on the activity of catalase in soil. On the contrary, Cr(VI) stimulates the activity of polyphenol oxidase. The results suggest that dehydrogenase activity can be used as an indicator for assessing the severity of chromium pollution. Foundation item: Projects(2006AA06Z374, 2007AA021304) supported by the National High-Tech Research and Development Program of China; Project(2008SK2007) supported by the Key Program of Science and Technology of Hunan Province, China     

不锈钢粉尘综合利用现状及研究进展

介绍了国内外不锈钢粉尘的处理工艺,对等离子工艺、Inmetco工艺、Fastmet/Fastmelt工艺、STAR工艺等几种代表性工艺的优缺点做了对比,并重点阐述了一步还原直接回收工艺,对该工艺所面临的问题展开了讨论。