Structure, properties and application to water-soluble coatings of complex antimicrobial agent Ag-carboxymethyl chitosan-thiabendazole

The structure, properties and application to water-soluble coatings of a new complex antimicrobial agent Ag-carboxylmethyl citosan-thiabendazole （Ag-CMCTS-TBZ） prepared from different materiel ratios were reported. The silver ions were preferably coordinated with the free-NH2 groups and the -OH groups of secondary alcohol and carboxyl in CMCTS. TBZ preferably bonded to carboxyl group in CMCTS by electrostatic force and hydrogen bonding. Increase in silver ions content in the complex agent improved to some limited extent the antibacterial activity, but enhanced coloring and cost of the complex agent. Increase in TBZ content resulted in increase of antifungal activity, but decrease of water solubility of the complex agent. The antimicrobial MICs of the complex agent to Esherichia coil, Staphylococcus aureus, Candida albicans, Aspergillus niger, Mucor sp. were 20 -80, 15 -60, 20 - 55, 40 - 250, and 400 - 1700 mg/kg, respectively. Addition of 0.1% of this complex agent to acrylic emulsion paint made the paint without substantial change in color, luster, viscosity, odor or pH value, but with an excellent and chronically persisting broad-spectra antimicrobial activity.     

基于S3C6410的机房智能监控系统设计

给出了一种对机房重要场所的环境参数及设备状态进行监控及报警的机房智能监控系统的设计方法。该系统主要由处理器、网卡、USB、A／D、数字信号采集、RS485、RS232等模块组成,其中处理器芯片选用三星公司的$3C6410芯片,操作系统由自裁剪的Linux2．6．38内核和UBIFS文件系统构成。系统整体采用B／s架构,操作系统内移植了嵌入式数据库SQLite3．7．4及嵌入式Web服务器Apache,结合PHP．HTML等脚本语言,将各项环境参数及指标在网页中实时、直观、友好地呈现给用户。     

A new strain Acidithiobacillus albertensis BY-05 for bioleaching of metal sulfides ores

An acidophilic,rod-shaped Gram-negative sulfur oxidizing strain BY-05 was isolated from an acid mine drainage of copper ore in Baiyin area,Gansu Province,China.Ultrastructural studies show that the isolate has a tuft of polar flagella and possesses sulfur granules with clear membrane adhering to the cell innermembrane.Physiological study shows that this isolate grows autotrophically and aerobically by oxidizing S0and reduced inorganic sulfur compounds(SO, 2 23-SO, 2 24- S2 -and ZnS)with the optimum growth at pH 3.5-4.0 and at the temperature range of 25-30℃.The 16S rRNA gene sequence(DQ 423683)of strain BY-05 has 100%sequence similarity to that of Acidithiobacillus albertensis(DSM 14366).So it is identified and named as A. albertensis BY-05.Bioleaching experiments with this new strain show that it can play an important role in recovery of metals from chalcopyrite and sphalerite.     

经济一体化信息管理系统研究

在分析了用户需求的基础上,结合．Net和Oracle9i数据库,开发了一种经济一体化的信息管理系统。该系统根据用户权限自动显示其权限内的工作内容,并伴有自动计算、查找、统计等功能。实际应用证明,该系统操作界面友好,用户操作简明快捷,系统运行稳定＇可以实现信息的实时查询和处理。     

自信的女人最美丽

有人说喜欢拍照的人是很明显的自恋的人，如果那样说的话，我这个超级喜欢自拍的人岂不是超级自恋狂了呀。要说自恋，我并不觉得自己属于那个范畴。每当我举起数码相机，把镜头转过来对准自己的时候，我会感觉特别放松，仿佛一切都平静下来，眼前的镜头就好比是另外一个好奇的我，想通过那个瞬间捕捉和窥视真实的自己。     

为Real媒体添加视频热点

可能不少朋友都看过一些Real的视频，只要到特定的时间点击特定的位置，就会打开一些主页，这是如何实现的呢？其实这就是Real媒体特有的“热点”功能。当用户在播放包含热点功能的视频媒体时，在指定时间点击指定位置就可以实现不同的功能。     

梵高的笔记本

在Moleskine的官方网站上，有句很醒目的话：Every Moleskine has a story to tell（每个笔记本都有故事）。尽管，Moleskine被称为“欧洲最传奇笔记本”，但经历磨难的它，直到现在依旧保持着几百年来的不动声色。     

走出网络，做一个真实的自己

见到小鱼的第一面是她到我们公司来应聘公关，作为行政经理助理的我那天正好负责安排应聘者的接待和面试的工作。其实我早在几个星期前就见过她的照片，听过她的声音了。行政经理给我的所有应聘者的资料中，很多人都是一板一眼的简历加大头照，而她却是最最特别的一个，     

镉污染土壤的微生物-植物协同修复研究进展

土壤重金属镉(Cd)污染是我国亟待解决的环境问题之一。植物-微生物协同修复因其原位、环保、费用低等特点在修复Cd污染土壤方面展现出较好的应用潜力。微生物通过促进重金属胁迫条件下的植物生长,提高植物对土壤Cd污染的修复效率。本文在阐述修复机理的基础上,对近年来国内外学者采用丛枝菌根真菌、根瘤菌和植物内生菌与植物协同的方法修复土壤Cd污染进行的研究进行了综述,并对今后的发展方向进行了探讨。