Biomineralization of phototrophic microbes in silica-enriched hot springs in South China

Microbial mats in two hot springs in South China were sampled for the research of mineralization of microbes and its mechanism by the methods of geology and modern biology. The results show that hot spring microbes have the key capability for enrichment of Si, Al, Fe, Ca and other elements, and the microbes are also crucial for the formation of SiO2, CaCO3, clay and so on. The extracellular polymeric substances (EPS) play important roles in the process of mineralization of hot spring microbes, which mainly takes place in the layer of EPS outside cell wall or sheath of cyanobacteria. The sheath outside cell wall, which keeps the normal metabolism of cyanobacteria during the process of mineralization on its surface, is also considerable for the biomineralization of cyanobacteria. According to structure and mineralization characteristics of two microbial mats, the process of mineralization can be divided into three stages, namely, early surface mineralization, middle degradation mineralization, and late des- quamation of mineral. The above conclusions are significant for comprehension of the process of mineralization, the process of deposition and the preservation of microfossil in modern and ancient extreme environments.     

卡鲁金顶燃式热风炉预燃室和拱顶流动的数值模拟

应用湍流扩散火焰燃烧模型,对卡鲁金热风炉的预燃室和拱顶内的燃烧过程进行了数值模拟研究,确定了燃烧过程中煤气、空气的速度分布。     

高温煤气脱硫新技术的研究及应用

通过对自制ZnO粉末脱硫剂的XRD及硫化实验，表明用热分解法制备的脱硫剂较用沉淀法制备的脱硫剂在物相上较好，而且单一的ZnO脱硫剂在脱硫效率及硫容方面均优于加入促进剂（10%澎润土）的ZnO脱硫剂.     

用铝渣和石灰对铁水预脱硫的热力学

通过热力学计算分析了Al在铁水中与氧和硫反应的平衡活度,当CaO和Al同时加入铁水中,适量的Al会提高CaO的脱硫能力.探讨了在Al的参与下,CaO作为脱硫剂时的脱硫热力学反应机理,以及Al2O3和CaF2对铁水脱硫的作用.     

寒热证大鼠舌体表面的扫描电镜观察

对雌性SPF级Wistar大鼠进行寒热证造模后,通过扫描电镜观察寒热证大鼠的舌体表面超微结构.结果显示:寒证组大鼠舌体表面丝状乳头密度较低、角质化程度较低,蕈状乳头角质化程度也较低;热证组大鼠舌体表面丝状乳头密度较高、角质化程度高,蕈状乳头角质化程度也较高.寒证大鼠舌质较光滑、舌苔较薄及热证大鼠舌质粗糙、舌苔较厚的实验结果与中医对寒热证舌象的描述一致.     

热轧带钢横向温度研究方法及测量分析

对目前带钢横向温度分布的研究方法和结论进行了分析;对1800热连轧机精轧出口带钢的横向温度进行测量,针对典型的分布规律,提出了描述参数,并用该参数就其分布规律以及分布与带钢宽度、纵向温度的关系进行了讨论,为建立热连轧带钢横向温度控制模型提供了依据.     

A New Generalized Similarity-Based Topic Distillation Algorithm

The procedure of hypertext induced topic search based on a semantic relation model is analyzed, and the reason for the topic drift of HITS algorithm was found to prove that Web pages are projected to a wrong latent semantic basis. A new concept-generalized similarity is introduced and, based on this, a new topic distillation algorithm GSTDA（generalized similarity based topic distillation algorithm） was presented to improve the quality of topic distillation. GSTDA was applied not only to avoid the topic drift, but also to explore relative topics to user query. The experimental results on 10 queries show that GSTDA reduces topic drift rate by 10% to 58% compared to that of HITS（hypertext induced topic search） algorithm, and discovers several relative topics to queries that have multiple meanings.     

也谈“子产而死”、“富而可求”之类句子的结构

在古代汉语中,＂子产而死＂、＂富而可求＂之类句子在句法结构上是＂主而谓＂结构,＂而＂前的名词既是主语,也是话题。＂而＂是连接主语和谓语的语气词,可以看作是古代汉语中特殊的话题主语标记。     

降低热带精轧堆钢技术攻关

研究了热带精轧堆钢的原因 ,采取了有效措施 ,取得了明显效果。     

近十年来我校科研状况浅析

通过对我校近十年来科研成果产出情况的统计分析，说明目前学校的科研和科技队伍现状，指出了学校在科研和论文发表方面的优势和不足，并对如何进一步加强学校的科研工作提出了建议。