Max232在智能网络化UPS中的应用

对Max232的功能结构进行了简单的介绍.利用Max232实现了智能网络化UPS与网络主机间的通讯功能.阐述了其通讯原理,同其他的通讯方式进行了比较.给出了实用的硬件连接原理电路图,编写了适用于两者间的通讯协议.最后给出了程序流程图.     

Crystal Structure of Chiral Acetato-bridged Binuclear Cyclopalladated complex[Pd（μ-O2CM3）（S-C6H4CHMeNH2）]2

Reaction of (S)-α-methylbenzylamine with Pd(OAc)2 in anhydrous HOAc produced the chiral complex[Pd(μ-O2CMe)(S-C6H4CHMeNH2)]2.(1).The complex was characterized by 1H NMR spectroscopy,elemental analysis and a single-crystal Xray analysis.The X-ray crystal structure analysis revealed that complex 1 has four isomers:two outer and two inner isomers.     

纳西象形文轮廓字体字库的设计制作与PDF植入

文章对纳西象形文轮廓字体的设计思想与制作原理进行了讨论.具体介绍了纳西象形文TrueType字体的制作过程.最后,给出了字体的PDF植入原理及大致过程.     

Homocoupling of Aryl Iodides Catalyzed by Cyclopalladated Complexes of Tertiary Arylamines

Homocoupling of aryl iodides catalyzed by cyclopalladated complexes of tertiary arylamines gives symmetric biaryls with good yields in DMA or ionic liquid [Bmim]BF4. This catalytic alternative of the Ullmann reaction has proved to be sensitive to both electronic and steric factors of substrates.     

最近邻河道相对高度及其在中国洪水淹没制图中的应用

基于国际上由数字高程模型（digital elevation model，DEM）衍生的最近邻河道相对高度（height above nearest drainage，HAND）概念，采用STRM DEM数据派生了中国1000和250 m水平分辨率的HAND数据集，并将HAND数据集应用于洪水淹没制图，建立了河道水位相较枯水期上涨1~10 m情景下的中国河道型洪水淹没图库．进一步以淮河一级支流淠河2020年7月大洪水为例，采用遥感提取及HEC-RAS计算的淹没范围，验证了基于HAND绘制的淹没图．结果表明，HAND相对于经典的DEM能够补充提供局地地形信息，基于HAND的淹没制图方法具有可行性和合理性．本文计算的中国HAND数据集可为地理学相关领域的研究提供凸显局地特征的地形数据，建立的基于HAND的淹没图库可为中国的洪水淹没制图工作及洪水风险管理提供参考．      

Crystal Structure of Chiral Acetato-bridged Binuclear Cyclopalladated Complex [Pd(μ-O_2CMe)(S-C_6H_4CHMeNH_2)]_2

IntroductionSinceKleiman ,Copeandcoworkersdescribedthefirstexampleofcyclopalladatedcomplex ,1,2 ithasarousedchemists’greatinterestsinthestructuresandproperties .Manycrystalstructuresofmonomericcyclopalladatedcom plexeshavebeeninvestigated .3,4 However ,structuresofacetato bridgedbinuclearcyclopalladatedcomplexesarerarelyreported .5Inthispaper,weobtainedthesinglecrystalofchiralacetato bridgedbinuclearcyclopalladatedcomplex [Pd (μ (O2 CMe) (S C6 H4 CHMeNH2 ) ]2 (1)whichwasdeterminedbyasi…