双乙酸钠对霉菌的抑制作用

论述了新型防霉剂双乙酸钠的性质及对常见霉菌的抑制作用，在实验研究的基础上，做了用于仪器及农产品是的防霉效果的比较 。     

Capillary electrophoresis-mass spectrometry of intact basic proteins using Polybrene-dextran sulfate-Polybrene-coated capillaries: System optimization and performance

A capillary electrophoresis-mass spectrometry (CE-MS) method using sheath liquid electrospray ionization interfacing was studied and optimized for the analysis of intact basic proteins. To prevent protein adsorption, capillaries with a noncovalent positively charged coating were utilized. Capillaries were coated by subsequent rinsing with solutions of Polybrene, dextran sulfate and Polybrene. The coating proved to be fully compatible with MS detection, causing no background signals and ionization suppression. The composition of the sheath liquid and BGE was optimized using the model proteins α-chymotrypsinogen A, ribonuclease A, lysozyme and cytochrome c. A sheath liquid of isopropanol-water-acetic acid (75:25:0.1, v/v/v) at 2 μL min⁻¹ resulted in optimal signal intensities for most proteins, but caused dissociation of the heme group of cytochrome c. Optimum protein responses were obtained with a BGE of 50 mM acetic acid (pH 3.0), which allowed a baseline separation of the test protein mixture. Several minor impurities present in the mixture could be detected and provisionally identified using accurate mass and a protein modification database. The selectivity of the CE-MS system was investigated by the analysis of acetylated lysozyme. Eight highly related species, identified as non-acetylated lysozyme and lysozyme acetylated in various degrees, could be distinguished. The CE-MS system showed good reproducibility yielding interday (three weeks period) RSDs for migration time and peak area within 2% and 10%, respectively. With the CE-MS system, determination coefficients (R²) for protein concentration and peak area were higher than 0.996, whereas detection limits were between 11 and 19 nM.     

垂直入射几何条件下氦原子(e,2e)反应的理论研究

用BBK模型和修正后的BBK模型在电子垂直入射几何条件下对氦原子的三重微分散射截面进行了理论计算,并把计算结果与实验测量结果进行比较,对截面的结构进行了分析,并对交换效应进行了系统的研究. 关键词： DS3C模型 中间峰 屏蔽效应 交换效应     

高职室内设计专业3DS MAX课程教学探讨

在总结高职室内设计专业＂3DS MAX＂课程教学经验的基础上,对教学对象、教学内容、教学手法等方面进行了初步的研究和探讨。     

基于模糊集-证据理论-层次分析法的车辆运行风险评估

为研究车辆运行风险等级,通过模糊集理论和DS证据融合算法,研究不同因素在不同风险等级的概率隶属值,运用层次分析法计算不同因素对车辆运行风险系统的权重值,通过加权计算车辆运行综合因素发生不同等级风险的概率和综合风险值。通过对湖南省高速公路某一路段作为实例分析,研究表明：该路段整体车辆运行风险是中等等级风险。因此,模糊集-DS证据理论-AHP的方法对车辆运行风险评估是行之有效的。     

用DS1302实现无线广播的播放定时

在概述DS1302功能的基础上,介绍了DS1302的结构和操作程序,并对利用DS1302解决无线广播播放定时的操作规程进行了论述。     

基于嵌入式系统芯片的INTERNET应用

8／16位的单片嵌入式系统芯片要想直接与互联网相连是有一定困难的。本文要介绍的就是这样一种网络单片机——嵌入式微处理芯片DS80C400的网络结构、特点、性能及网络应用,文中给出了嵌入式微处理芯片DS80C400中集成的TCP／IP、网络起动时IPV6的自动配置特性,同时还给出了相关的部分程序代码。     

多媒体课件的设计制作与教学实验的研究

介绍使用3DSMAX和FlashMX制作电子皮带秤多媒体课件的方法。该课件最终做成的三个nash文件分别展示了电子皮带秤的仪器外观、结构和测量过程，促进了教学的互动。     

A Fixed Point Theorem in Intuitionistic Fuzzy Metric Spaces by Using New Commutativity Condition

We prove a common fixed point theorem for discontinuous,noncompatible mappings on noncomplete intuitionistic fuzzy metric spaces by using a new commutativity condition.We validate our main result by an example.