云南不同烟区片烟醇化过程色度及主要化学成分变化特征研究

研究云南不同烟区片烟醇化过程中外观颜色以及内在化学物质变化差异,为云南烟区醇化片烟的使用提供理论依据。取云南3个产区片烟进行醇化,对比分析其在醇化过程中的颜色以及内在化学物质变化差异。不同产区片烟在醇化过程中色差值L、b与总糖、总氮、烟碱呈现逐渐下降趋势,云南文山片烟色差值L、色差值b、总糖、总氮下降幅度大于云南保山与云南大理;还原糖与质体色素降解产物先上升后下降,云南大理峰值出现时间晚于云南保山与云南文山;色度值R、苯丙氨酸降解产物、西柏烷类降解产物、棕色化产物逐渐上升,不同产区变化幅度表现为云南文山>云南保山>云南大理。云南文山片烟在醇化过程中,片烟的外观颜色与内在化学物质变化幅度更大,达到最佳醇化期所需时间少于云南大理与云南保山。     

35kV小型化模式变电所优化组合的研究与应用

通过两种“小型化模式变电所”接线的优化组合，对主开关部件加以研究改造，使其能适合于既有供电用户又有小水电上网负荷区域运行的３５ｋＶ小型化全户外式变电所，在浙江省余姚市梨洲获得成功。在减少投资、节约土地、缩短周期、降低运行费用等方面效益显著。     

汽车ABS制动防抱死系统

文章介绍了防抱死制动系统（ABS）的发展及分类,解释了系统基本组成与其工作原理,并详细阐述了博世ABS系统的控制过程作,总结了检修ABS的一些注意事项,最后选取典型故障案例进行评述。     

Cytological studies on adventitious shoots and minitubers of a monoploid potato clone

Summary A three step procedure for adventitious shoot regeneration on leaf explants of monoploid potato clone H7322 and a minituber induction procedure on stem segments have been described. Chromosome counts on 92 adventitious shoots showed that 85% of them had been polyploidized, i.e., 71% were diploid, 1% tetraploid, and 13% were mixoploid. Cytophotometric studies on nuclei of soil grown tubers of tetraploid cv Astarte, of 1x, 2x and 4x adventitious shoots of H7322, and of diploid H²578 showed in all cases polyploidization with prominent classes up to 8C and 16C. However, nuclei of pith cells of 5 weeks old minitubers which had developed on monoploid H7322 itself or on 1x adventitious shoots of H7322 showed predominantly 1C and 2C values. Pith cells of minitubers of monoploid H7322 were screened, after iodine staining, for the presence of variant cells containing reddish-brown staining (amylose-free) starch. In more than 75% of the investigated minitubers one or a few of such variant cells were found indicating that such a variation occurs in minitubers of monoploid potato and that this variant character is expressed in cells of vegetative storage organs like potato tubers.     

高职院校应用写作教学摭谈

本文从高职院校应用文的教学观念、教材、教学手段、教学方法等几个方面对目前高职语文教学存在的弊端进行分析,并提出相应的改革办法和措施,希望能对高职语文教学改革有所帮助。     

生物质热解油的化学组成及其研究进展

综述了生物质热解油的研究现状及应用前景,重点介绍了生物质热解油化学组成的分析方法,总述了生物质热解油的物化性质,进而归纳了几种常见生物质热解油,特别是城市污水污泥热解油、城市垃圾热解焦油、工业废油热解油、林业废料热解生物油和农作物热解油的化学组成及其性质;讨论了生物质热解油常见的改性办法,如催化加氢处理、沸石分子筛处理、催化裂解和乳化工艺的过程及其特点;展望了生物质热解油的研究前景,提出了相关建议。     

蛋黄油脂肪酸组成分析

通过毛细管气相色谱法对蛋黄油甘油三酯脂肪酸相对含量进行测定,其主要脂肪酸组成为:油酸42.86%、亚油酸22.95%、棕榈酸19.91%、硬脂酸7.89%、棕榈油酸2.25%、亚麻酸0.94%,不饱和脂肪酸总含量达到69%。蛋黄油的功能成分表明,蛋黄油是一种极具开发价值的营养保健油脂。     

Some Physical and Chemical Properties of Clarias gariepinus Dried with Solar Dryers and Solar Tents in Sokoto,Nigeria

A research was conducted to assess the effects of three different drying techniques, namely open sun drying （OSD）, solar dryers （SD） and solar tent dryers （STD）. Data on physical characteristics such as weight, total length and standard length were recorded and proximate composition of the fish sample Clarias gariepinus （Burchell, 1822） was carried out before, during and after drying to assess changes on physical characteristics and nutrient composition at different level. After drying, the samples were subjected to storage for eight weeks. The result obtained shows that there was no significant （P 〉 0.01） difference in the drying weight of the fish samples between the direct SD and the STD. However, for the total and standard length there was significant （P 〈 0.01） difference in the drying techniques, but no significant difference （P 〉 0.05） in the drying period. There was no significant （P 〉 0.05） difference on the physical parameters, storage period, proximate composition of both direct SD and STD and the drying period, respectively. Therefore, direct SD can be substituted with the STD without altering the quality of the product.     

鸭疫里氏杆菌江苏分离株G＋C含量测定及DNA同源性研究

采用苯酚－氯仿混合法,提取了鸭疫里氏杆菌（Ｒｉｅｍｅｒｅｌｌａ ａｎａｔｉｐｅｓｔｉｆｅｒ）血清１型Ｊｂ２株,Ｊｂ３株,未定型菌Ｔｂ１株以及鸭大肠杆菌Ｅ４株和大肠杆菌Ｋ１２株的基因组ＤＮＡ。用热变性法测得Ｊｂ２,Ｊｂ３,Ｔｂ１和Ｋ１２株的解链温度分别为６８．５,６８．５,６９．０和７３．５℃（缓冲液为０．１×ＳＳＣ）。由计算可知Ｊｂ２,Ｊｂ２和Ｔｂ１株的Ｇ＋Ｃ含量分别为３５．６２％,３５．６２％和     

智能建筑系统的构成及造价确定

智能建筑应能提供安全、舒适、快捷的优质服务,有一个有利于提高工作效率、激发人的创造性的环境.智能建筑是楼宇自动化系统、通信自动化系统和办公自动化系统三者通过结构化综合布线系统和计算机网络技术的有机集成,其中建筑环境是智能建筑的支持平台.