Key to Freshwater Algae: A Web-based Tool to Enhance Understanding of Microscopic Biodiversity

The Freshwater Ecology Laboratory at Connecticut College has developed an interactive, Web-based identification key to freshwater algal genera using the Lucid Professional and Lucid 3 software developed by the Centre for Biological Information Technology at the University of Queensland, Brisbane, Australia. The Key to Freshwater Algae was funded by the National Science Foundation (Award #CCLI-0229531) to encourage awareness of microscopic diversity through a creative, investigative approach to learning. Users may answer questions in any order to quickly and efficiently narrow down the list of taxa to only those that match the characteristics they have chosen. All characters and terms are clearly explained for ease of use by those unfamiliar with the algae. This non-hierarchical, user-friendly key is linked to Web pages containing a wealth of resources, including images, movies, and information about the morphology, ecology, and reproduction of each organism. These materials are especially well suited for classroom use in conjunction with cultures purchased from the Carolina Biological Supply Company, a popular distributor of biological materials. Cultures from the Carolina Biological Supply Company representing nearly 75 freshwater genera from a variety of algal groups were observed and photographed using high resolution digital imaging to fully document cellular structure and highlight distinguishing features. High quality video footage of each taxon incorporating titles, diagrams, and structural terminology was outputted as QuickTime movies, on DVD, and on VHS cassettes. The Key to Freshwater Algae and supplemental materials are available online at http://silicasecchidisk.conncoll.edu to provide an innovative alternative to traditional dichotomous keys that is particularly appropriate for introducing students in undergraduate life science courses to the algal groups and genera.     

谈民办高校发展中应该注意的几个问题

中国民办高校的发展史是一部在夹缝里求生存的历史,虽然说现在民办高校整体实力在不断发展壮大,但其核心竞争力仍然不强,发展容易受诸多因素的影响,因此,如何提高自身核心竞争力是想创办一流名校的民办高校必须面对的难题。本文结合江西蓝天学院的发展历程,分别从学校文化的塑造、学校管理制度的建设、学校战略的选择与实施三个方面谈民办高校如何提高核心竞争力。     

巢湖微污染水质状况及处理技术

巢湖是合肥市一个重要水源。文章对巢湖微污染水质的特点及形成原因进行了深入的研究 ;对氨氮、藻类、p H值、异味等四个特征指标的变化规律做了详细论述 ;对以巢湖为水源的水处理技术进行了总结 ,提出了源水预氧化—聚合铝铁、亚铁氯化联合混凝—HCA助凝—除臭剂、活性碳联用去除异味—微絮凝的高效率水处理模式 ,不仅在合肥供水集团有限公司取得了非常良好的应用效果 ,也可为其它以内陆湖泊为水源的制水厂所借鉴。     

锦江水污染监测的藻类初步研究

为了在锦江丰富的藻类中寻找水污染监测和治理的新型藻类,本研究于2007年在枯水期和洪水初期对锦江不同区段共采集107个样,通过多重比较、相关和回归分析及电脑采集显微图象比较,结果表明:在枯水期和洪水初期,水体生物密度可以作为监测锦江水污染的参考指标;260nm的吸光值可用来衡量锦江水体生物密度的大小,也可作为锦江水污染监测的一个参考指标;藻类分布的密度和种类在主要污染源区及其上下游之间有明显的差异,种类上表现为硅藻>蓝藻>绿藻>其他藻类;硅藻门、蓝藻门、绿藻门和裸藻门等藻类门中的一些种类可能是锦江水污染监测的藻类。     

Algal community composition and abundance near the confluence of the Jialing and Yangtze Rivers and in Shuanglong Lake in Chongqing, P. R. China

To understand the potential impact of the Three Gorges Reservoir on the aquatic ecosystem after the damming of the Yangtze River, we studied the community composition and temporal abundance distribution of algae in two types of water bodies： a segment of the Jialing River near its confluence with the Yangtze River as an example of the river-lake type, and Shuanglong Lake in Chongqing as an example of the lake type. In total, 107 species belonging to 58 genera of 7 phyla were identified in the study area of the Jialing River, dominated by three groups with 49.5% diatoms, 29.0% chlorophytes, and 11.4% cyanobacteria in the community composition. There were 122 species belonging to 66 genera of 8 phyla in Shuanglong Lake, dominated by the same three groups with 19.7% diatoms, 48.4% chlorophytes, and 22.2% cyanobacteria. The densities of total algae and individual dominant groups were all much higher in the lake. More species of diatoms were found in the river-lake segment; whereas more chlorophyte species and cyanobacteriaum species were in the lake. There were 17 dominant species including 8 diatoms, 4 chlorophytes, 3 cyanobacteria and 2 cryptophytes in the river-lake segment, and 21 species in the lake, including 2 diatoms, 9 chlorophytes, 6 cyanobacteria, 3 cryptophytes and a dinoflagellate. In eutrophic conditions, chlorophytes and cyanobacteria may proliferate in a lake-type area and diatoms may cause algal bloom in a relatively faster-flow lake-river type area.     

固体二氧化氯杀藻实验研究

以富营养化水体为研究对象,以固体二氧化氯为杀藻剂,进行了杀藻效果研究,考察了投药量、接触时间、pH值对固体二氧化氯杀藻效果的影响,筛选出了最佳实验条件:pH值为5、接触时间为1.5 h、投药量为15~25 mg/L时可获得较高的杀藻率,并讨论了将其作为教学实验的可行性。     

有机改性粘土矿物除藻研究进展

水华的频频发生给环境,经济,生态造成巨大的经济损失,严重影响了人们的生活,天然粘土安全无毒,来源丰富低廉,是人们研究的热点,通过改性粘土除藻技术能够有效地去除水体中的藻类,因此,如何改性粘土,提高除藻率引起各学者的关注。本文综述了目前除藻的方法以及有机改性粘土除藻的研究,指出了有机改性粘土除藻存在的问题以及未来的发展方向。     

山东半岛蓝色经济区海洋主导产业发展的信贷支持度测算

结合信贷工具在海洋经济发展中的现状,对山东半岛蓝色经济区海洋主导产业发展的信贷支持进行定量测算,研究结果表明,蓝色经济区信贷工具对海洋经济发展的支持并不理想。在借鉴国外信贷支持海洋经济发展成功经验的基础上,结合半岛蓝色经济区海洋主导产业发展的实际情况,文章最后提出了蓝色经济区海洋主导产业发展的金融环境优化方案。     

耐尔蓝共价键合固定于自组装膜电极表面的电化学特性

章利用自组装方法，将耐尔蓝共价键合固定于自组装膜电极表面，并研究了其电化学及电催化性质。耐尔蓝在自组装膜电极表面形成稳定的单分子层，在电极表面呈现准可逆的氧化还原性质，并能有效地电催化氧化烟酰胺腺嘌呤二核苷核（NADH0和电催化还原辣根过氧化物酶（HRP）。其良好的氧化还原性质和电催化特性，可为构造生物传感器提供稳定的媒介层。     

从"高级蓝领"紧缺看高职教育的人才培养

高级蓝领是企业的中坚力量，在社会经济发展中具有重要地位和作用。培养高级蓝领是我国高职教育的重要任务，但目前社会用人单位高级蓝领出现了供不应求现象，产生这种现象的原因主要是来自社会和高职教育本身两方面的。“缺”就是需要，需要就是目标。高职院校是培养高级蓝领的重要阵地，只有加强高职教育，切实培养出合格的高级技术人才来，才能解决高级蓝领供不应求的矛盾。