过路黄克隆生长对光照强度的反应

利用遮阳网产生光照梯度，以研究光照强度对克隆植物过路黄(Lysimachia christinae)形态特征和生物量分配的影响．结果表明：1)匍匐茎节间长度随光照强度的减弱而增大，遮荫明显增加过路黄的分枝角度，分枝强度没有对光强发生显著反应．遮荫使叶柄变长，而根长则变短．2)随光照强度的减弱，叶柄生物量逐渐增大；遮荫降低了叶生物量、根生物量、总生物量、根生物量比和地下生物量／地上生物量．3)在遮荫条件下，一级匍匐茎基部分株的叶生物量和分株总生物量显著大于顶部分株，而根冠比则相反．根的生物量在各分株间无显著差异．在不遮荫条件下，仅匍匐茎基部分株的叶生物量大于顶部分株，其它的生物量指标在各分株间无显著差异．在分株水平，分株的根冠比不受光强的影响．总之，过路黄的克隆生长在基株和分株水平都对光强作出了明显的反应，而且这种反应具有等级性．     

有破产成本的风险债务估值未定权益分析

破产成本是企业破产时发生的费用，从而降低了企业资产价值。破产时，债权人只能得到扣除破产成本后的企业资产价值，因而对企业的债务价值有影响。运用未定权益分析方法，给出风险债务估值的基本思路及风险债务价值满足的微分方程，得到永久性债务估值模型，可作为长期债务估值的近似。运用未定权益定价和随机计算，导出了一个包含破产成本的风险债务估值公式，该公式能说明投资策略、股利策略对风险债务价值的影响。最后将得到的结果与默顿、布莱克等人的工作进行了比较。     

现场总线与工业开放式互连系统

通过对各种现场总线技术及其应用情况的分析，指出了PROFIBUS、FF等不同总线的优缺点及适用场合，并与集散式控制系统进行比较。从通信协议分析，现场总线设备层可用以太网实现，并与管理层、控制层相结合，形成工业以太网，构成管控一体化的工业开放式互连系统。     

两株中度嗜盐菌的分离与生理生化分析

对从青岛附近海产品盐渍中分离得到的两个菌株——CM1和CM4进行了分析．结果表明CMl和CM4符合盐单胞菌属(Halomonas)的特征，但与几个典型的盐单胞菌属菌种有显著的差异，因而可能是该属的新种．通过对其表型和生长特征的分析发现，这两个菌株可能采用了不同的进化稳定对策以适应特殊的高盐环境，即CMl采用了K-对策；而CM4采用的是r-对策，从而将进化稳定对策拓展到了无性繁殖的微生物领域。     

Measurements of leucocyte membrane elasticity based on the optical tweezers

A 1-μm in diameter polystyrene bead coated with lectin is trapped by optical tweezers whics is formed by a focused laser beam (740nm).A leucocyte adhered to the bottom of sample cell is chosen to close to the trapped bead.When their stable combination is confirmed,the leucocyte is displaced by moving the sample stage.A“tether”is then formed between the trapped bead and the membrane.The force acting on the tether is measured by a detector equipped on the optical tweezers system.The deformation of the membrane is diverse in different contact conditions.When the contact area is small,the tether is very thin and the force on it is 7.4pN(10^-12N),while the tether is much thicker under a larger contact area and its corresponding force is about 14pN.It is presumed that the latter is related to the deformation of cytoskeleton.     

A complete sequence and comparative analysis of a SARS-associated virus(Isolate BJ01)

Severe Acute Respiratory Syndrome (SARS) is a newly identified infectious disease[1—5]. The global outbreak of SARS has been threatening the health of people worldwide and has killed 353 people and infected more than 5462 in 27 countries, as reported by WHO on April 29, 2003 (http://www.who.int/csr/sarscountry/en). Although it has been recognized that a variant of virus from the family of coronavirus might be the candidate pathogen of SARS[1—5], its identity as the unique pathogen sti…     

东营凹陷沙三段-沙二下亚段T-R层序特征及成因

将东营凹陷古近系沙三段沙二下亚段划分为 3个三级层序 ,即沙三下层序 (SSⅠ )、沙三中层序 (SSⅡ )和沙三上沙二下层序 (SSⅢ )。SSⅠ和SSⅡ层序由湖进体系域和湖退体系域组成T R旋回 ,其特征是代表层序边界的不整合分布局限 ,湖进体系域厚度小 ,主要为细粒沉积物 ,退积式叠加 ;湖退体系域较厚 ,由进积式叠加的砂岩、砾岩和泥岩组成。T R层序的形成主要是由于层序形成早期的构造沉降和气候起主导作用 ,其基底快速沉降 ,湖水供应充分 ,湖平面快速上升。在层序形成晚期 ,沉积物供给和气候起主导作用 ,沉积物供给多 ,快速向前推进 ,湖平面下降。构造沉降和沉积物供给因素对层序控制作用的转换促使其形成层序和体系域的边界。T R层序与三分层序之间的转换是由于层序形成的不同阶段的主控因素不同而引起的     

TiCl2-NH3·H2O液体发烟剂红外衰减性能实验

烟幕技术是现代战场效费比最高的光电对抗手段，其干扰效果依赖于烟幕的组成成分。对基于四氯化钛-氨水体系液体发烟剂布设的烟幕的红外衰减性能进行了研究，发现在适宜条件下，烟雾呈中性，同时对3～5μm和8～12μm红外辐射的衰减率可分别达到65％和90％。当靶温在34℃～73℃之间变化时，烟幕对8～12μm红外辐射的衰减率均高于90％，对3～5μm红外辐射的衰减率随靶温升高而降低。     

婴幼儿哮喘与肺炎支原体感染的关系

目的 通过分析婴幼儿哮喘发病情况，探讨婴幼儿哮喘与肺炎支原体感染的关系．方法 对75例婴幼儿哮喘患儿检测肺炎支原体抗体并与45例上呼吸道感染患儿及35例正常小儿作对照。结果 婴幼儿哮喘患儿MP-IgM检测阳性率达到25．3％，与对照组有显著差异．结论 婴幼儿哮喘中支原体感染率较高，应引起重视．     

Novel Hyper-Redundant Manipulator-. Design, Study and Experiment

A novel hyper-redundant manipulator named RT1 is designed and studied. The unique feature of RT1 is all degrees of freedom (DOF) are actuated with only one motor via special designed hinge bar universal joints. The mechanisms of RT1 are introduced in detail. Some experiments are carried out in order to test the movability and adaptability of the manipulator. RT1 is actuated by pulse string and acts discretely. The discrete working space of RT1 is described and the parameter optimization for kinematical redundancy resolution is studied also. The optimization criterion is altering the design parameter as little as possible during manipulator's motion from the initial position to the expected position. An optimization example is given that is realized with Matlab optimize tool-box.