Multi-scaling hierarchical structure analysis on the sequence ofE. coli complete genome

We have applied the newly developed hierarchical structure theory for complex systems to analyze the multi-scaling structures of the nucleotide density distribution along a linear DNA sequence from the completeEscherichia coli genome. The hierarchical symmetry in the nucleotide density distribution was demonstrated. In particular, we have shown that the G, C density distribution that represents a strong H-bonding between the two DNA chains is more coherent with smaller similarity parameter compared to that of A, T density distribution, indicating a better organized multi-scaling fluctuation field for G, C density distribution along the genome sequence. The biological significance of these findings is under investigation.     

关于艺术设计院校图书馆服务创新的研究--以鲁迅美术学院大连校区图书馆为例

艺术设计院校的师生对图书资源有着独特的需求，如何从用户视角挖掘图书馆管理与服务模式的创新，是当前艺术设计院校图书馆亟待解决的问题。以鲁迅美术学院大连校区图书馆为例，全面分析了艺术设计院校图书馆管理与服务模式的现状，诠释了二者的微观创新举措与宏观发展思路，旨在为艺术图书馆的创新发展提供参考。     

线性序集的对偶扩张代数的Ringel对偶

给出了线性序集的对偶扩张代数的Ｒｉｎｇｅｌ对偶代数。     

Mathematical model of the direct reduction of dust composite pellets containing zinc and iron

Direct reduction of dust composite pellets containing zinc and iron was examined by simulating the conditions of actual production process of a rotary hearth furnace (RHF) in laboratory. A mathematical model was constructed to study the reduction kinetics of iron oxides and ZnO in the dust composite pellets. It was validated by comparing the calculated values with experimental results. The effects of furnace temperature, pellet radius, and pellet porosity on the reduction were investigated by the model. It is shown that furnace temperature has obvious influence on both of the reduction of iron oxides and ZnO, but the influence of pellet radius and porosity is much smaller. Model calculations suggest that both of the reduction of iron oxides and ZnO are under mixed control with interface reactions and Boudouard reaction in the early stage, but only with interface reactions in the later stage.     

Mutations in IHH, encoding Indian hedgehog, cause brachydactyly type A-1.

Brachydactyly type A-1 (BDA-1; MIM 112500) is characterized by shortening or missing of the middle phalanges (Fig. 1a). It was first identified by Farabee in 1903 (ref. 2), is the first recorded example of a human anomaly with Mendelian autosomal-dominant inheritance and, as such, is cited in most genetic and biological textbooks. Here we show that mutations in IHH, which encodes Indian hedgehog, cause BDA-1. We have identified three heterozygous missense mutations in the region encoding the amino-terminal signaling domain in all affected members of three large, unrelated families. The three mutant amino acids, which are conserved across all vertebrates and invertebrates studied so far, are predicted to be adjacent on the surface of IHH.     

基于VoiceXML的呼叫中心的研究和实现

在呼叫中心的建设中，为用户提供更为方便、灵活的接入方式在电子商务迅速发展的时代显得尤为重要。结合实际开发中的经验，介绍了基于VoiceXML的呼叫中心的体系结构及备模块的功能。     

糖尿病专用型特殊医学用途配方食品的研制

针对国内外糖尿病患者特殊医学用途配方食品的发展现状,根据糖尿病人的代谢特点和营养需要,从产品配方、形态、工艺、质量标准、稳定性等方面,对糖尿病专用特定全营养配方食品研究要点进行了概述。     

包套锻复合热机械处理技术中TiAl基合金显微组织细化的机理

对比研究了常规热机械处理和包套锻复合热机械处理技术中，材料的显微组织和热学行为．揭示了常规热机械处理下，由于应力分布不均匀和变形过程中充分地发生着动态再结晶，造成材料的显微组织不均匀；而在包套锻复合热机械处理技术下，由于实现快速变形，热变形材料储能高，随后的等温再结晶退火可获得均匀的显微组织．     

惯性熵理论在横观各向同性圆柱壳中的应用

在横观各项同性圆柱壳热弹耦合的自由振动问题中应用惯性熵理论,引入3个位移函数将自由振动问题的方程简化为4个二阶常微分方程,用含复宗量的修正贝塞尔函数解得到位移、温度和应力的表达式.结合圆柱壳内外表面自由的边界条件,得到圆柱壳自由振动频率方程.选用锌作为介质,通过数值计算圆柱壳无量纲最低阶频率发现:中径与长度之比较大的圆柱壳中,其厚度的变化对自由振动最低阶频率的影响较大;轴向半波数较大的模态下,圆柱壳厚度对最低阶频率的影响相对较大;圆柱壳壁越薄,周向波数的影响越大;最低阶频率会随着周向波数的增大先减小而后增大;周向波数的增大会将圆柱壳厚度对频率的影响放大.研究表明,惯性熵理论可更方便用来解决热弹耦合动力问题.     

用环境经济手段“破解”城市垃圾问题

将环境经济手段运用于解决城市垃圾问题,是今后的一个发展趋势。由于城市垃圾的种类繁多,环境经济手段的运用既需要“一揽子”计划,更需要“一事一议”式的策略。本文以城市垃圾的分类收集与收费、一次性餐盒的替代问题为案例,对环境经济手段在具体垃圾问题上的综合运用作尝试性分析。