高铅硫化铜精矿的二段焙烧

高铅硫化铜精矿进行湿法铜铅分离时，焙烧过程因有低熔点组份产生，使培砂中铜浸出率仅为73％～82％，达不到工艺要求。经二段焙烧后消除了上述影响，铜浸出率达到97．4％，实现了铜铅分离。     

面向并行应用程序的DAG模式复用技术

在并行应用程序设计中可以用有向无环图(DAG)表示子任务之间的依赖关系,从而实现子任务的调度。为此,针对DAG数据驱动模型中的DAG模式复用问题,提出插件式DAG模式图库。将DAG模式图模块和运行时系统模块分离,增强模块的复用性和扩展性。在Easy PDP系统中实现并扩展该模式图库。以棋盘问题为例,证明该技术可降低扩展系统所需的代价。     

Distribution of Quasimidranges and Associated Mixtures

In this paper are presented and discussed tabulations of the cumulative distribution functions of quasimidranges and mixtures of quasimidranges of samples from a normal distribution. The tabulations extend up to samples of size 21. For quasimidranges not involving the extreme values of the sample, the departure from normality is very small. The physical problem giving rise to the mixtures is discussed.     

折弯机三大件多层分体结构设计研究

立柱、工作台和滑块是折弯机关键零件,其强度和刚性对机床精度影响至关重要。通过分析立柱、工作台和滑块的结构及受力状况,提出一种多层分体组合结构,代替整体焊接结构,降低单件外形和重量,达到便于加工、运输和安装的效果。通过实际使用验证得出多层分体结构是折弯机尤其是大吨位折弯机大件理想的结构方式。     

屏蔽暂堵工艺在气井修井上的应用评价

随着气藏压力逐年下降,气层抗污染能力逐渐减弱。为了减少修井过程中的储层损害,文章介绍了气井屏蔽暂堵工艺。开发的屏蔽暂堵剂YLZ-I具有良好的流变性和可泵性,固化时间可根据需要调节,性能稳定,强度高,解堵后地层渗透率恢复值不低于95％。文92-47等井的现场应用表明,该工艺简单易行,在气井修井过程中能暂时封堵气层,修井结束后成功解堵,有效地保护气层。     

Determination of pesticide residues in food matrices using the QuEChERS methodology

The determination of pesticide residues in food matrices is a formidable challenge mainly because of the small quantities of analytes and large amounts of interfering substances which can be co-extracted with analytes and, in most cases, adversely affect the results of an analysis. However, safety concerns require that pesticides of the wide range of chemical properties (including acidic, basic and neutral) should be monitored. Because of the wide variety of food matrices, the sample must initially be cleaned up before final analysis. That is why the analytical chemist is faced with the need to devise new methodologies for determining such residues to be determined in a single analytical run. To accomplish the goal, QuEChERS methodology has been developed. It is a streamlined and effective extraction and cleanup approach for the analysis of diverse analyte residues in food matrices. So far, there have been achieved promising results by liquid or gas chromatography analysis, including pesticides, but also acrylamide, pharmaceuticals and veterinary drugs.     

金属间化物（Sm_（1－x）Y_x）_2Fe_（17）N_y结构的X射线衍射研

通过Ｘ射线衍射等手段对赝三元金屑间化物（Ｓｍ＿（１－ｘ）Ｙ＿ｘ）＿２Ｆｅ＿（１７）Ｎ＿ｙ（ｘ＝０，０．２．０．４．０．６，０．８和１．０；２＜ｙ＜３）的晶体结构及自旋磁结构进行了研究。由试验结果得出以下结论：１）当Ｙ的含量ｘ为０．４时，已出现两相共存现象，但两相中以Ｔｈ＿２Ｚｎ＿（１７）型结构相为主，Ｔｈ＿２Ｎｉ＿（１７）型结构相为次；当Ｙ的含量了达到０．６时，其晶体结构由Ｔｈ＿２Ｚｈ＿（１７）型结构变为Ｔｈ＿２Ｎｉ＿（１７）型结构；２）当Ｙ的含量ｘ在０．８～１．０的范围内，存在自旋磁结构的变化，即由易Ｃ轴各向异性变为易Ｃ平面各向异性；３）杂质相（α－Ｆｅ相）的含量随着Ｙ含量ｘ的增加而减小。     

逻辑推数游戏的实现

利用易语言实现了手机上比较流行的智力游戏——逻辑推数，首先对逻辑推数游戏和易语言进行了介绍，接着给出了游戏的实现方法，并给出了部分关键代码。     

外来的和尚好念经

花巨资请来国外服装设计师，是事半功倍还是事倍功半？     

基于触摸屏的花式喷泉控制系统设计

介绍了基于触摸屏的花式喷泉控制系统的主电路设计,控制电路设计,PLC程序设计,触摸屏组态等内容。