Design of Information Technology Application System for Automotive Industry

The situation and the future of the automotive industry information construction is shown in this paper. The significance of Chinese automotive industry information construction is discussed,and the technology base and system structure is also described. The function and the structure of information system by one application of marketing plotting system in one automobile factory's E-commerce are introduced.The important significance for develop and research of product and strategic decision is shown by building market demand information system.     

谈高职高专院校青年教师如何突破教学关

社会发展对人才的需求促进了高等职业教育的发展,高职高专院校青年教师队伍不断壮大。大多数青年教师都是高学历、高起点,有强烈的事业心和成就感。青年教师队伍为提高高等职业教育教学质量提供了强大的师资储备。但是,他们中的绝大多数都来自非师范类专业,在教学方法和对教学规律的认识方面有欠缺。因此,青年教师尽快突破教学关在其成长过程中显得尤为紧迫。1树立正确的教学思想是青年教师突破教学关的前提1.1正确认识高等职业教育规律高等职业教育是直接以未来某具体工作岗位人才为培养目标的一种技术应用型教育,从这个意义上说,高等职业…     

自激振荡脉冲射流式增氧机机理及实验研究

自激振荡脉冲射流式增氧机利用自激振荡原理,使吸入的空气和需氧水体在自激振荡腔室内获得充分的搅拌、混合和充氧,然后以脉冲流的方式通过特殊尾扩散管释放出去。理论分析和现场实验表明,该增氧机具有优良的搅拌、混合和充氧效果,从特殊尾管喷射出去的射流在需氧水体内具有较强的脉冲效应,有效地提高了充氧性能。     

乌鸡、火鸡实验性组织滴虫病病理学比较

以组织滴虫病疫区鸡异刺线虫虫卵实验诱发火鸡、乌鸡组织滴虫病，分别在潜伏期、症状明显期、转归期对盲肠、肝脏等组织器官进行病理学比较观察，结果显示：盲肠卡他（乌鸡13/20；火鸡8/29）和纤维素性坏死（火鸡19/27，乌鸡7/20）。肝脏脂肪变性（火鸡8/27；乌鸡11/20）及局灶性坏死（火鸡19/27；乌鸡4/20）。此外，火鸡肝脏与盲肠见典型传染性肉芽肿。     

基于分子技术的柑橘黄龙病研究进展

黄龙病是柑橘生产上的一种毁灭性病害。近年来该病害在世界多个柑橘主产区发生与流行,使其再次引起了世界柑橘生产者和研究者的高度关注。目前认为柑橘黄龙病病原是一种韧皮部难养细菌,暂命名为"Candidatus Liberibacter spp."。随着现代分子生物学技术的迅猛发展,柑橘黄龙病相关菌的全基因组和柑橘全基因组序列日趋完善。我们在这一大背景下主要介绍近5 a来柑橘黄龙病分子水平的研究概况,特别是在分子流行学、基因组学、转录组学、蛋白质组学、病原致病性和寄主抗病性分子机理及防控方法等方面的进展,并对目前研究中存在的困难进行分析,对今后的研究方向进行展望。     

白菜叶和茎中微量元素Cu、Mn含量的测定

为研究白菜的食品应用及工业应用价值,采用HNO3-HCl O4(4∶1)湿法消解样品,火焰原子吸收光谱法(FAAS)测定白菜叶和茎中微量元素Cu、Mn的含量。试验结果表明,白菜叶和茎中Mn、Cu含量存在明显差异,Mn的含量均大于Cu的含量,且这两种元素在叶中的含量均高于茎。     

Effects of microglia-derived IL-1β on differentiation of OPCs in corpus callosum of septic neonatal rats

AIM: To explore whether IL-1β inhibits the oligodendrocyte precursor cell (OPCs) differentiation and affects axonal myelination. METHODS: One-day-old SD rats were randomly divided into control group and LPS group (48 rats in each group). The rats in LPS group were intraperitoneally injected with 1 mg/kg LPS. The rats in control group were injected with an equal volume of PBS. The rats in each group were further divided into 3 h, 24 h, 3 d, 7 d, 14 d and 28 d subgroups after injection. The expression of IL-1β and IL-1R₁ in the rat corpus callosum at 3 h, 24 h, 3 d, 7 d was determined by double immunofluorescence and Western blotting. The myelin basic protein(MBP) expression in the rat corpus callosum at 14 d, 28 d after injection was also measured. In vitro, primary OPCs culture was performed and divided into control group, 30 μg/L IL-1β group, 30 μg/L IL-1β+IL-1Ra group and 30 μg/L IL-1Ra group. The expression of MBP in the OPCs induced differentiation for 3 d was observed by double immunofluorescence and Western blotting. RESULTS: The expression of IL-1β and IL-1R₁ in the rat corpus callosum at 3 h, 24 h, 3 d, 7 d after LPS injection was obviously increased and the expression of MBP in the rat corpus callosum at 14 d, 28 d in LPS group was obviously decreased compared with control group in vivo. The level of MBP was significantly decreased after IL-1β treatment for 3 d in vitro. However, IL-1Ra (IL-1R inhibitor) reversed the down-regulation of MBP expression. IL-1β inhibited the expression of p-ERK, ERK over-expression reversed the down-regulation of MBP expression compared with IL-1β group. CONCLUSION: IL-1β inhibits the differentiation of OPCs, which may be involved in ERK pathways, thus leading to axonal hypomyelination in the corpus callosum of septic neonatal rats.     

温室黄瓜新品种津优335号的选育

津优335号是以自交系A143-5为母本,以自交系B74A-7为父本配制而成的黄瓜一代杂种。耐低温弱光能力强,植株长势强,雌花节率高、连续结瓜能力强,瓜条生长速度快。瓜条商品性突出,品质好。抗枯萎病,中抗褐斑病、霜霉病和白粉病。越冬栽培不歇秧,单瓜质量约220g,总产量20000kg·(667m2)-1左右,适宜我国北方地区日光温室各茬口栽培。