焦化硫铵对建筑物的腐蚀及防腐措施

在冶金企业中，焦化的厂房及库房受硫铵的腐蚀较为严重，根据焦化的实际情况,对厂房及库房腐蚀的原理和现状进行分析，并根据多年的工作经验，对该厂新建的硫铵工段提出了防腐的方法和施工措施，应用到适合我厂的实际防腐工作中。     

蓝甘菊超临界萃取物成分分析及其在卷烟加香中的应用

采用超临界CO2萃取蓝甘菊,对提取物进行GC/MS成分分析,并进行卷烟加香试验。结果表明:蓝甘菊萃取物鉴定出113种成分,萃取产率0.27%。113种成分中,相对百分含量最高的是红没药醇氧化物(50.303%)、β-金合欢烯(19.530%);萃取物稀释至1%后在卷烟加香试验中使用0.05%~0.20%效果较好,能明显改善香气质感,丰富卷烟香气。     

特别关注 关于调整住房供应结构的大讨论——任志强：用市场手段解决市场风险

在市场经济中产业结构的调整是个永远的话题，房地产业中多年来一直争论不休的也正是产业结构的调整问题，特别是住宅生产结构的合理性问题。     

停产检修处理煤气方式的探讨

探讨了处理煤气方式的分类及特点,提出并归纳了强制通风方式、惰性气体在钢铁企业煤气系统中的应用.     

CASS工艺处理城市污水的设计与运行

某污水处理工程设计处理规模为3.0×104 m3/d,二级生物处理按CASS工艺进行设计,介绍了工程的设计与运行情况.工程运行结果表明:“CASS-混沉-过滤”组合处理工艺运行稳定,处理后的出水水质可达到GB18918-2002《城镇污水处理厂污染物排放标准》一级A标准.     

汾酒酒醅发酵过程中真菌群落的变化规律

In this work, the physicochemical properties of fermented grains for Fenjiu sampled at different time points of fermentation were evaluated, and the fungal community structure in it was analyzed by high-throughput sequencing. A comparative analysis was performed between the samples from primary and secondary fermentation. The results showed that the major nutrients and microbial metabolites in fermented grains changed regularly during the fermentation process. Significantly different trends in these compounds were observed between primary and secondary fermentation. Totally 98 fungal operational taxonomic units (OTUs) were obtained from fermented grains, and the diversity of fungi was significantly different between primary and secondary fermentation. The diversity of fungi increased first and then decreased in primary fermentation, while the diversity of fungi gradually decreased in secondary fermentation. The initial fungal communities in primary and secondary fermentation were similar to each other. Pichia was the dominant strain for both fermentation processes. However, the dominant fungi at the later stage of fermentation were quite different between them. Saccharomyces cerevisiae was the most dominant fungus in primary fermentation, and Candida was the most dominant fungus in secondary fermentation. The results from this study are of great significance to further study the metabolic pathway for key flavor substances and to improve the yield and quality of Fenjiu.     

一株产纤维素酶枯草芽孢杆菌的麸曲制作及其产酶特性研究

目的：为开发利用产纤维素酶菌种的资源利用率。方法：采用产纤维素酶系齐全、活性高的枯草芽孢杆菌（Bacillus subtilis）XWS-A制作细菌麸曲,通过Box-Behnken响应面设计优化制曲工艺,并对其产酶特性进行探讨。结果：制曲最佳工艺为控制接种量7.5%,培养温度46 ℃,含水量46%,该工艺条件下生物量达到了（4.5±0.3）×10¹¹ CFU/g;成品麸曲具有3种纤维素酶活性,最佳测定条件下内切β-葡聚糖酶活力为（2 510±70） U/g,外切β-葡聚糖酶的活力为（15±2） U/g,β-葡萄糖苷酶的活力为（30±3） U/g。结论：制作麸曲有利于产纤维素枯草芽孢杆菌XWS-A获得有效增殖、提高产酶量及维持酶活性。     

含小水电的配电网无功优化研究

针对含小水电的线路上安装双向调压器(BSVR)后无功补偿容量难以合理确定的问题,提出了潮流方向判定准则以及考虑分接头调整影响的双向调压器等值模型重构,采用适应前推回代潮流算法的小水电数学模型,通过对遗传算法的改进,求出最优或较优的补偿方案.实例证明,该方法应用于含小水电配电网的无功优化计算是有效的.     

干涉配合疲劳强化机理研究

通过理论推导与有限元分析,系统研究了外载水平、材料性质及结构受力状态对干涉配合疲劳强化的影响。研究结果表明:干涉配合中干涉量的选用不仅与材料性质有关,还与外载荷的大小、连接孔的尺寸等有关。通过分析计算这些影响干涉量选用的因素,推导出了干涉配合中干涉量的选用准则。并根据边界条件得到材料疲劳极限的估算公式,为以后的研究和生产提供了理论依据。