Removal of NO<Subscript><Emphasis Type="Italic">x</Emphasis></Subscript> by radical injection

Removal of NOx(DeNOx, NOx is the total of NO and NO2) from flue gas by radical injection has been investigated .the discharge characteristics were examined and the steady streamer corona was acquired hy adjusting the nozzle gases properly. It was Found that an increase in the voltage resulted in a decrease in the NO concentration and the concentration of the NO2 increased at tow voltages but decreased as the voltage rose to a certain level. The DeNOx efficiency increased as the applied voltage rose and reached a maximum of 70% when the voltage approached the breakdown voltage. The hypothetical mechanism of NOx removal suggested that the radicals formed in the discharge process converted the NO and NO2 into acidic species. The Monte Carlo method was used to calculate the rate coefficients and the productivity of the radicals, and then the concentrations of both NO and NO2 and the DeNOx effielencies were calculated with chemical kinetics. The calculated DeNOx efficiencies were coalparable with the experimental DeNOx efficiencies at low voltages, but were lower at high voltages.     

船舶避碰的自适应模糊专家系统研究

采用自适应模糊系统和神经网络方法,研究了基于模糊联想规则的避碰操纵知识表示,知识获取和自适应学习;建立了基于二值输入输出模糊联想系统的并行模糊推理机制,由此而建立的船舶避碰撞模糊专家系统具有自适应学习能力,能实现实时避碰导航。     

国家自行车队高原训练强度的监控与研究

本文对部分国家自行车队的运动员分别在平原、２３００米的高原、实验室和公路现场训练的负荷强度进行了研究，发现运动时的最大摄氧量、通气阀功率低氧较常氧下降约２０％，同时还测得高原上的空气阴力减少约２０％，表明：经短期适应的平原运动员在２３００米高原上进行极量亚业极量运动所特殊承受的缺氧负荷强度约为２０％，由此产生的高、平原训练强度换算规律及训练负荷强度安排核式。以期为解决各种缺氧条件下的负荷强度问题提供有关的参考。     

基于系统控制理论的企业柔性研究

在系统控制理论基础上，对企业整体柔性的概念和模型进行了探讨．建立了企业与环境之间双向控制的关系模型．指出企业组织既可以看成是一个受控系统，同时也可以看成是一个自主性的系统．通过对企业组织与环境控制关系中有效性和可行性的分析，讨论了企业柔性的多维含义．从不同的控制结构模式，分析了企业柔性管理与设计工作的含义和特点．探讨了提高企业柔性的一般思路．     

面向对象语言Transframe及其环境MagicFrame

论述了目前的软件开发中存在的两个问题：①现有的高级语言对各种高级计算模型支持的不足;②快速原型开发和高质量产品开发之间的矛盾,针对上问题,设计了一种新的面向对象语言Ｔｒａｎｓｆｒａｍｅ并研制了它的开发环境ＭａｇｉｃＦｒａｍｅ．Ｔｒａｎｓｆｒａｍｅ语言具有的参数化的动态类、名的一般模型、类与函数概念的统一、成员类继承和代理等多种机制为构造各种领域模型提供了有力的支持。基于Ｔｒａｎｓｆｒａｍｅ的开发环     

Demography of the Yarrow's spiny lizard, Sceloporus jarrovii , from the central Chihuahuan Desert

The demography of a population of Yarrow's spiny lizard, Sceloporus jarrovii , was examined from 2004 to 2006 in the canyon Las Piedras Encimadas, located in Gomez Palacio, Durango, México. Lizards were studied using a mark-recapture technique. Reproduction in females occurred between November and May, coinciding with dry conditions. Reproductive activity was highest (percent of females with vitellogenic follicles or embryos) in the middle of the dry season (November and December). Thirteen percent of females reached sexual maturity at an average age of 8.5 months. The population structure was similar in spring and fall, but not in summer. A notable feature of summer, coinciding with the wet season, was the greater number of hatchlings and juveniles. The overall sex ratio did not differ from 1:1. The density of adults varied from 12 to 62 animals ? 0.5 ha –1 . Temperate and arid-adapted populations of S. jarrovii exhibited broad similarity in timing of the reproductive season, whereas factors such as density, growth, age at sexual maturity, and survivorship differed.     

Predation of artificial Sage Grouse nests in treated and untreated sagebrush

We measured predation on 120 artificial Sage Grouse ( Centrarcus urophasianus ) nests in montane sagebrush grassland in northern Utah. We examined nests in areas that had been chained and seeded 25 years previously (treated areas) and in areas that were untreated. Predation rates of artificial nests were higher in areas of untreated sagebrush, even though these areas had greater sagebrush cover, taller shrubs, and greater horizontal plant cover. These results differ from those previously hypothesized for treated sagebrush habitat and may reflect a greater abundance of other potential prey species, especially lagomorphs, in untreated areas that attracted greater densities of predators. In addition, over 80% of nests were depredated by mammals, which hunt using olfaction and are less likely than avian predators to be affected by nest cover. We conclude that, after treated sagebrush has recovered to some degree, predation rates of Sage Grouse nests may be lower in treated sagebrush. Consequently, factors other than nest predation (e.g., winter food, thermal cover, insects, perennial forb abundance) may be more important reasons for preserving mature sagebrush stands for Sage Grouse.     

Nanostructured TiO2（B）:the effect of size and shape on anode properties for Li-ion batteries

Reducing the dimensions of electrode materials from the micron to the nanoscale can have a profound influence on their properties and hence on the performance of electrochemical devices,e.g.Li-ion batteries,that employ such electrodes.TiO2(B) has received growing interest as a possible anode for Li-ion batteries in recent years.It offers the possibility of higher energy storage compared with the commercialized Li4Ti5O12.Bulk,nanowire,nanotube,and nanoparticle morphologies have been prepared and studied.However,to date these materials have not be compared in one article.In the current review we first summarize the different synthesis methods for the preparation of nanostructured TiO2(B);then present the effects of size and shape on the electrochemical properties.Finally TiO2(B) with nanometer dimensions exhibit a higher capacity to store Li,regardless of rate,due to structural distortions inherent at the nanoscale.     

一种路径时延约束下构造最低代价多播树的探索算法

提出了一种新的探索算法 ,它根据源与目的节点间的时延约束 ,构造最低代价的多播树。并且可以在网络节点请求加入或离开时 ,通过更新现有的多播树 ,实现多播树的动态维护。对该算法进行了仿真 ,并与现有的一些算法进行了比较     

(Ba1-xSrx)TiO3介电常数与温度、频率的关系

分析了影响(Ba1-xSrx)TiO3陶瓷材料介电特性的诸因素，从温度依赖、频率响应两个方面，对BST陶瓷材料的介电常数进行了研究．在进行频率特性的测试中，选取x=0．35的BST、材料，即(Ba0.65Sr0.35)TiO3，测得不同晶粒度下的介电常数随频率的变化曲线．在进行温度特性的测试中，测量了不同晶粒度的BST材料介电常数与温度变化的关系，并绘制了关系曲线．