电力储能用锂离子电池标准化发展分析

完善的锂离子电池标准体系是锂离子电池储能电站安全运行、锂离子电池性能高效应用的重要保障。本文结合当前锂离子电池产业发展现状,从组成电池的关键材料、运输、生产检测等方面出发,梳理了储能用锂离子电池的标准并分析其中存在的不足,对锂离子电池标准化未来的工作重点和发展路径提出了建议。

图释西江平南县域内袁崇焕故里地理文化

历史名人的故居作为旅游资源开发,促进一方的社会经济更快发展已是不争的事实。争论近400年的历史人物袁崇焕的出生地广西藤县白马莲塘村的地理文化受到学者的关注。明朝被称为蛮荒之地的白马莲塘村,今天看来陆路交通仍处在较低的水平。当下在国家加快形成西江经济带,与北部湾经济区江海联动,互相促进,使增长极"核力"更加巨大的时代背景下,以西江为两地市交界的袁崇焕故里的南北两岸白马文化及演绎出的故事与文化逻辑值得深入研究。生活在这片土地的人们传承着当地的地理文化,这一小地方可以借助名人的符号关联历史文化,加大文化建设的力度,使之成为西江流域文化沉淀的一个承载点。借助图片更深入分析当地的地形地貌,为深度旅游者提供更深度的地理文化认知。

郫县豆瓣中一株耐盐酵母菌的分离鉴定及其发酵性能

为研究酵母菌对郫县豆瓣风味与品质的影响,筛选具有生产应用潜能的酿造功能菌株,从郫县豆瓣中分离筛选到一株耐盐酵母HJ-7Y. 1,经形态生理生化特征和ITS r DNA序列鉴定为鲁氏接合酵母。耐盐性测试显示HJ-7Y. 1在含260 g/L Na Cl培养基中生长良好,表明其具良好的耐盐性能。通过气相色谱(gas chromatography GC)和顶空固相微萃取(headspace solid-phase microextraction,HS-SPME)气质联用(gas chromatography-mass spectrometry,GC/MS)方法,对菌株发酵液中乙醇的含量和挥发性成分进行了检测。实验结果表明,HJ-7Y. 1在高盐浓度下仍具有较好的产乙醇能力,同时能代谢产生苯乙醇、乙酸乙酯、3-甲基丁醇、乙酸苯乙酯等多种香气成分,这些呈香物质的存在能为豆瓣具有的特色风味奠定良好的物质基础,因此,HJ-7Y. 1具有应用于郫县豆瓣生产的开发潜力。

Effects of soil conservation practices on soil erosion and the size selectivity of eroded sediment on cultivated slopes

Soil conservation practices can greatly affect the soil erosion process,but limited information is available about its influence on the particle size distribution(PSD)of eroded sediment,especially under natural rainfall.In this study,the runoff,sediment yields,and effective/ultimate PSD were measured under two conventional tillage practices,downhill ridge tillage(DT)and plat tillage(PT)and three soil conservation practices,contour ridge tillage(CT),mulching with downhill ridge tillage(MDT),and mulching with contour ridge tillage(MCT)during 21 natural rainfall events in the lower Jinsha River.The results showed that(1)soil conservation practices had a significant effect on soil erosion.The conventional tillage of DT caused highest runoff depth(0.58 to 29.13 mm)and sediment yield(0.01 to 3.19 t hm^(-2)).Compared with DT,the annual runoff depths and sediment yields of CT,MDT and MCT decreased by 12.24%-49.75%and 40.79%-88.30%,respectively.(2)Soil conservation practices can reduce the decomposition of aggregates in sediments.The ratios of effective and ultimate particle size(E/U)of siltand sand-sized particles of DT and PT plots were close to 1,indicating that they were transported as primary particles,however,values lower/greater than 1 subject to CT,MDT and MCT plots indicated they were transported as aggregates.The ratios of E/U of claysized particles were all less than 1 independently of tillage practices.(3)The sediments of soil conservation practices were more selective than those of conventional tillage practices.For CT,MDT and MCT plots,the average enrichment ratios(ERs)of clay,silt and sand were 1.99,1.93 and 0.42,respectively,with enrichment of clay and silt and depletion of sand in sediments.However,the compositions of the eroded sediments of DT and PT plots were similar to that of the original soil.These findings support the use of both effective and ultimate particle size distributions for studying the size selectivity of eroded sediment,and provide a scientific basis for revealing the erosion mechanism in the purple soil area of China.

拟建平南至容县高速公路跨西江段旅游文化挖掘

高速公路布线选择向社会大众征询时,参议者的视角不同,提出的建议千差万别。讨论平台可能有攻击与诋毁言论出现。政府有包容之度,老百姓的意见不被采纳也应坦然以对。人们有理由相信政府能够综合更多的智慧选出最优的布线。西江平南县域内的袁崇焕故里是西江上的一个重要文化结点,历史为此刻画了一道很深的文化痕迹,值得文化旅游者驻足深入研究。全州(湘桂界)至容县(粤桂界)公路平至容县段正好经过这个结点,该工程2019年9月正式进入环境影响评价公示阶段。该文从学理的角度分析该工程与政府的契合度。结论是:(1)政府已经间接承认广西的第二个核电项目选址有误,放弃拟建的平南核电厂,前期建设进厂专用路改为用民生工程;(2)地方政府财力不足以建设跨江大桥,作为多年招商项目不切实际;(三)南北白马村共建历史名人袁崇焕故里旅游区。

烷基酚聚氧乙烯醚的微生物降解研究进展

烷基酚聚氧乙烯醚(APEOs)是一种重要的非离子表面活性剂,广泛应用于日常生活和工业生产中,其具有环境雌激素效应和生物累积性,进入环境后对人类和生态系统具有潜在危害。微生物降解APEOs与其他处理方法相比,具有低成本、可持续以及无二次污染等优点。重点从APEOs降解菌株的选育、降解特性、降解机理及其处理工艺和影响因素展开综述,提出未来可从APEOs完全降解菌株筛选、功能基因鉴定与验证、APEOs废水生物强化处理实际应用以及其在污泥中的积累等方面开展相关研究。