软x射线近贴显微技术

软x射线近贴显微技术不但可使活的生物样品成象,分辨率高于光学显微镜,而且人为的样品准备程序在该技术中都可避免。本文描述了用高功率激光打靶产生的等离子体作为软x射线源而进行的近贴显微研究,并得到了分辨率好于1μm的结果。     

红外光谱法测定高碱性磺酸盐的碱值

采用简单、快速且有选择性的红外光谱法测定高碱性磺酸盐添加剂的碱值。在高碱性磺酸盐同一张谱图上,可以测定到在865厘米～(-1),1180厘米～(-1)分别属于δco_3～(2-),v_(asso)振动的吸收强度,由于样品厚度未知,而采用了吸收比的方法。     

钾离子选择电极及其在生物医学中的应用进展

钾离子选择电极的研究一直是一个非常活跃的题目,具有令人瞩目的发展。本文就其研制、测试法与应用方面的新进展进行评述。     

高速电视摄象系统的象质评价和动态计测精度

本文对高速摄象系统(包括电视摄象系统和光机式摄象系统)的象质评价方法予以讨论,并用实验方法对目前广泛使用的Kodak SP-2000、NAC HSV-200等高速电视摄象系统及我们自己开发的一维扫描电视摄象系统的象质,在新的定义下给出了评价,对它们的动态精度作了对比性测试,同时和光机式高速摄象系统作了比较。     

电子束装置运行稳定性的测量

 为了验证电子束装置的稳定性,分别对电流波形、电压波形进行了多次测量,对二极管放电时注入腔中电子均匀性进行了探测,最后改变二极管真空度测量了泵浦氩的荧光 谱的稳定性。     

离焦散斑技术研究Kirchhoff板在动载作用期的弯曲

本文使用动态离焦散斑技术,测试板的动态弯曲获得成功。并推导了Kirchhoff板动态变形的有关分析,提出了由最大斜率确定材料常数的思想。显然,这是同离焦散斑方法所测数据直接相关的处理手法。     

In situ Synthesis of Oligonucleotides on Plasma Treated Polypropylene Microporous Membrane

Polypropylene microporous membranes were treated with plasma in a mixture of N2 and H2 (1:2 in volume). Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), X-ray photoelectron spectroscopy (XPS) and ultra-violet (UV) spectra demonstrated the success of grafting amino groups. The density of the polar amino groups on the membrane surface is about 0.59 μmol/cm^2. The as-treated membranes were successively applied to the in situ synthesis of oligonucleotides and an average coupling yield was more than 98%. The surface feature of the treated membrane is suggested to be responsible for its advantage over a glass slide.     

Degradation of 4-chlorophenol in aqueous solution by γ-radiation and ozone oxidation

The application of radiation technology in the en-vironmental protection was listed as one of the mostimportant research fields by the International AtomicEnergy Agency (IAEA) for the peaceful use of nuclearenergy. It has great research value and potential appli-cation. Because of their broad-spectrum antimicrobialproperties, Cholophenols (CPs) have been used aspreservative agents for wood, paints, vegetable fibersand leather and as disinfectants. In addition, they havebeen widely employed…     

Structure of Tetra[β-(1,2,4-triazole-1-yl)propiophenone] Dichloro Nickel(II) Solvate Hexahydrate Complex: [NiCl_2(C_2H_2N_3CH_2CH_2COPh)_4]·6H_2O

IntroductionRecently ,thecompoundscontaining 1H 1,2 ,4 tria zolegrouphaveattractedmuchinterestbecausetheyex hibitsomefungicidalactivity ,plantgrowthregulatingac tivity ,1antibacterialactivityagainstPucciniareconditeandrootsgrowthregulationforcucumber .2 Also ,suchcom poundsareincreasinglybeingstudiedbecauseofthecoor dinationchemistryoftriazolesactingasligandsintransi tionmetalcompounds .Asamatteroffact ,thetriazolederivativeshavebeenextensivelyusedasterminalandbridgingligands ,andtheyleadto…