应用全谱直读光谱仪测定原油中铁和钙元素的含量

提出了利用电感耦合等离子发射光谱ICP -AES法测定原油中铁、钙元素含量的方法 ,考察了雾化压力、RF功率等对被测元素分析线强度的影响 ,确定了仪器的最佳使用条件。试验表明 ,该方法简便、快速、精密度和准确度均令人满意 ,能满足实际应用的要求     

传感器网络推拉混合模式代码传输方法

代码传输是实现无线传感器网络应用重构的关键技术.首先研究传感器网络环境自适应应用重构(EAAR)模型的两种代码传输模式-拉模式和推模式,并结合两种模式的特点提出一种适用于分簇传感器网络的能量有效代码传输模式-基于簇的混合代码传输(Cluster-based Hybrid Code Transmission, CHCT).在该模式下,簇头节点采用拉方式从基站获取代码,簇内节点采用推方式进行代码传输.仿真实验验证了方法的有效性并讨论了影响CHCT性能的主要参数.     

Amniotic membrane transplantation for porous sphere orbital implant exposure

Objective: This study is aimed at describing the clinical outcome of amniotic membrane transplantation for exposure of porous sphere implants. Methods: A retrospective review of consecutive cases of porous sphere orbital implant exposure was carried out. Eight cases were presented between May 2004 and Oct. 2006 (5 males, 3 females; mean age 44.5 years). Six had enucleation and two had evisceration. Exposure occurred in two primary and six secondary. Orbital implant diameter was 22 mm in seven cases and 20 mm in one case. Six patients are with hydroxyapatite and two with high-density porous polyethylene (Medpor) orbital implants. The mean time from implantation to exposure was 1.1 months (range 0.8~2 months). All patients required surgical intervention. Results: The time of follow-up ranged from 3.0 to 28.0 months (mean 16.5 months). Amniotic membrane grafting successfully closed the defect without re-exposure in all of these patients. The grafts were left bare with a mean time to conjunctiva of about 1 month (range 0.8~1.5 months). Conclusion: Exposed porous sphere implants were treated successfully with amniotic membrane graft in all of patients. The graft is easy to harvest. This technique is useful, dose not lead to prolonged socket inflammation and infection, and it is valuable application extensively.     

一个强耦合系统的整体吸引子的存在性

考虑一个强耦合抛物系统的初边值问题,通过利用抛物方程解的先验估计的技巧以及微分-积分不等式,给出了这个系统解的整体吸引子的存在性.     

基于三维目标建模的需求分析方法

面向目标的需求分析方法是需求工程领域研究的热点问题之一.在深入研究目前有代表性的目标分类方法基础上,提出一种不依赖于具体应用领域的、较为系统和完整的目标分类框架和建模方法.该框架从三个角度对目标进行划分,分别将其归类为操作性或非操作性目标,硬目标或软目标以及实现型或维持型目标.这三种分类虽然相互独立,但在实际建模时可以相互补充,形成一个完整的体系,为目标建模提供不同的帮助.在此基础上,还提供了一种目标建模的具体算法,可以较好地完成目标建模任务.     

基于XML伪编译的信息隐藏算法

基于XML伪编译的信息隐藏算法，首先将XML文档中需要安全保护的数据以二进制的形式存放于内存，把这些二进制数据分别以每1位长度、2位长度和4位长度互不重叠的平均分为三个数组并保存，根据嵌入信息的长度来选择相应数组，当嵌入信息是“1”时对该数组中对应的单位长度数据进行取反运算，嵌入信息为“0”则不做处理，实验结果表明：该算法不改变XML逻辑结构、标识字体等其原始的规范性、标准性，隐藏容量比修改XML逻辑结构、标识字体等其它隐藏算法高，而且更具有安全性，采用伪编译的信息隐藏算法不改变XML文件内容的逻辑结构、标识字体，而是从XML数据的安全角度，通过利用对XML内部重要数据的伪编译来实现信息隐藏。     

建筑设计院办公自动化系统的应用与研究

阐述了现代办公自动化的内涵及发展,简述了太原市建筑设计研究院办公自动化系统的实施与应用。     

科学不端行为的成因及对策

分析了科学不端行为的成因,探讨了从内部和外部来治理科学不端行为的具体措施。     

The Design of Behavior Management Institution Based on Special Symbols and Measure Optimizing-Taking the Design of the Institution of Controlling the Pollution Behavior of Enterprises as an Example

Taking the institution design of controlling the pollution behavior of enterprises as an example, the symbol system specialized for the design and analysis of behavior management institution is put forward, which predigests the institution design greatly and make the process of institution design much like the engineering design. The measure combination method for improving the parameters of the institution, the arithmetic for calculating the validity of the institution and the arithmetic for calculating the behavior probability of the irrational managed are also put forward, which make the design and analysis technology of behavior management institution more practical.     

基于水杨醛的手性Salen-Mn(Ⅲ)配合物与DNA相互作用研究

以水扬醛为基本原料,合成了2种具有手性的Salen-Mn配合物,通过圆二色(CD)光谱、吸收光谱、粘度和凝胶电泳等方法研究了2种配合物与DNA的作用.结果显示:这2种配合物不以插入模式与DNA结合,但显示出化学核酸酶性质,在H2O2存在下,能够断裂DNA,将pBR 322 DNA由formⅠ转化为formⅡ.图6,参12.