Sex-related gene and sex identification of Crested IbisNipponia nippon (Ciconiiformes: Threskiornithidae)

The Crested Ibis (Nipponia nippon) is a critical endangered species of the world. At present, a reintroduction program will be conducted to save this species essentially. However, because the Crested Ibise is a sexual alike bird, it is very difficult to identify the sex from the morphological character. In order to identify the sex easily and select the right individuals for captive breeding and reintroduction, the sex related gene on W chromosome was amplified and the sex of three Crested Ibises were also identified in the present study. The 262bp fragment was also sequenced, and we found that there were 13 different nucleotide sites with 2.25 of transition/transversion based on the comparison with that of the Oriental White Stork. The sequence will also provide a theoretic base for further designing specific primer for sex related gene in the Crested Ibis.     

Microtextural characterization of as-cast and hot press-deformed TiN whiskers in TiNw-AINp/Al composite

The local distribution of preferred orientation and misorientation in TiN whiskers in TiNw-AINp/A1 composite system is investigated using backscattering electron diffraction combined with a scanning electron microscope. These preliminary results demonstrate the utility of this new automated technique for characterizing local textures in composite materials using backscattering electron diffraction. The composite investigated comprises TiN whiskers in a polycrystalline aluminum matrix. The local textures of samples before and after deformation were measured. The misorientation distributions show a breakdown of the monocrystal of TiN whisker in the deformed composite material relative to the starting material and an increase in small angle misorientations.     

渗透胁迫和外源ABA对旱生植物梭梭幼苗某些生理性状的影响

梭梭幼苗在H氏平衡溶液中培养至第4天时,其细胞膜透性、可溶性糖和脯氨酸含量均出现明显的转折变化;甘露醇溶液渗透胁迫引起幼苗的细胞膜电解质渗漏率下降,脯氨酸含量大幅度升高,可溶性糖含量则呈现交替变化;外源ABA则以对上生理指标有不同的影响。因此其作用机制可能与渗透胁迫无直接的相关性。     

200km／h电动车组制动力控制研究与试验

200km/h电动车组采用微机控制直通电空制动系统,在制动力的控制精度和系统的响应时间上达到了国外同类产品的性能,详述了电动车组制动力的理论计算,在同济大学制动技术研究中心实验室内的高速及城轨制动控制系统1：1静止试验台上,经过反复试验,证实了理论计算值和试验值具有很好的一致性,同证明了该系统制动力控制精度高,具有空气制动与动力制动能自动配合,并可充分利用动力制动等优点。     

浅谈管理会计技术方法的发展与创新

随着社会生产力的进步,管理水平的提高,管理会计技术方法也在不断发展和完善,战略管理会计是管理会计发展的新趋势,是一种具有创新意义的新型管理会计模式。     

Porous spherical cellulose composites coated by aluminum (III) oxide and silicone: Preparation, characterization and adsorption behavior

Porous spherical cellulose composite (PSCA) coated by aluminum (III) oxide was prepared and modified by organosilicone. SEM images of the surface morphology of the bead cellulose shows that it has spherical shape and abundant porous structure on its surface. The mapping images, of aluminum and silicon of the composite (PSCAS) present aluminum (III) oxide and silicone are uniformly dispersed on the surface. The adsorption behavior of PSCAS toward metal ions was determined. Foundation item: Supported by the Scientific Committee of Hubei Province (20001P1903) and Scientific Committee of Wuhan (20006010106) Biography: Meng Ling-zhi(1947-), Associate professor, research direction: polymer ligand catalyst and ligand adsorption.     

基于构件库的软件重用技术

论述了基于构件的软件重用技术包括的三个部分：以构件库为中心的开发模型,与构件库相关的技术,基于软件体系结构的构件复合。最后,介绍了采用这些技术的一个程序例子。     

基于多模型SGPC的高速列车速度及位置跟踪控制

研究了列车自动驾驶系统(ATO)的多模型阶梯式广义预测控制(SGPC)方法。首先针对高速列车运行过程的非线性特性,采用多模型策略,建立一个线性自适应模型和一个神经网络非线性模型并行辨识系统的动态特性。然后在每个采样时刻根据性能指标切换到最优的局部模型作为系统的当前模型。设计SGPC控制器,从而实现高精度的列车速度和位置跟踪控制。最后模拟列车运行中参数突变的影响,将该方法与传统的单模型线性广义预测控制方法进行对比研究。仿真结果表明:其控制效果明显优于单模型的线性广义预测控制器。     

KL植物胶钻井液特性及其减振机理

结合某地区的地质特征,对KL(苦苈)植物胶及其添加剂(NaOH与水解聚丙烯酰胺)进行室内试验,配制KL植物胶钻井液,并对KL植物胶钻井液的具备的流变性,粘弹性的变化规律进行探讨,最后对其减振机理进行论述。研究结果表明NaOH与水解聚丙烯酰胺(PHP)对KL植物胶流变特性有较大影响,主要表现在对其动切力及表观粘度的提升都有很好的促进作用;同时实验现象表明KL植物胶钻井液是粘弹性流体,添加剂NaOH与PHP可提高KL植物胶的粘弹性;KL植物胶钻井液的减振与其拥有良好的流变性与粘弹性关系密切,主要表现为粘弹减振,成膜效应与流变循环特性。     

独头掘进面爆破后CO浓度变化分析及预测

通过在现场收集实验数据来研究分析独头巷道掘进工作面爆破后CO浓度的变化规律。运用灰色系统理论知识对CO的浓度值进行分析;并对其进行预测。根据分析和预测的结果指导独头巷道局部通风作业,提出改进的建议措施。