论体育“三益”功能之效率

偿试把学校体育功能分为益体、益智、益心三方面,并分别加以叙述和效率探悉。旨在进一步理顺体育教学的功能作用,挖掘潜力,为进一步搞好现代体育教学改革,培养出更多的合格人才提供理论依据。     

Morphological variability and genetic diversity in five species of Skeletonema （Bacillariophyta）

Twelve strains of Skeletonema from Chinese coastal waters and another strain from the West Sea of Korea were examined using light microscopy （LM）, scanning and transmission electron microscopy （SEM, TEM）, and small subunit （SSU） rDNA sequence analysis. We identified four species of Skeletonema： S. marinoi Sarno et Zingone, S. subsalsum （A.Cleve） Bethge, S. dohrnii Sarno et Kooistra, S. trop- icum Cleve, as well as a Skeletonerna-like species. These are the first records of S. rnarinoi, S. dohrnii and S. subsalsurn in China. The Skeletonema-like species, MMDLS067, was isolated from the estuary of the Changjiang River. The morphologic and phylogenetic characteristics of this species are not correspond to those of any previously published Skeletonerna species. The intercalary fultoportula pro- cesses （IFPPs） has long open tubes, and the intercalary rimoportula process （IRP） is short and located inside the rim of the IFPPs. Phylogenetic analysis revealed that MMDL5630 clustered with S. tropicurn in the NJ and MP trees, but its IRPs differed from those of previously described specimens of S. tropicum. The IRP is partially open, with an elongated opening at the base of the tube, and is longer than the IFPPs. Some specimens of S. marinoi and S. dohrnii also have longer tubular IRPs than the IFPPs. Compared to pre- viously described specimens of S. rnar＆oi and S. dohrnii, these two specimens we identified have shorter IRPs. Our results reflect the ambiguity and diversity of Skeletonema taxonomy. They are also significant for the future identification and management of red tides caused by Skeletonerna in the seas around China.     

一类K4—同胚图的色唯一性

本文解决了文献〔１〕中的问题１５，即给出了Ｋ４－同胚图Ｋ４（２，β，１，１，１，η）不是色唯一的充分必要条件。     

论中草药锁阳的价值及开发前景

文章结合中山市珍家山污水处理厂氧化沟的施工实践,对如何做好氧化沟的大体积混凝土施工及相关工序控制,论述了污水处理池施工中防渗防漏的控制措施.     

大学历史教学与唯物主义教育

在历史课程教学中加强对大学生的唯物主义教育，增强他们抵制封建迷信等唯心主义形态的自觉性，是对大学生进行思想政治教育的需要。从讲政治、重大局、重全局的政治高度来看，尤其具有现实意义。     

市政污水处理池施工中防渗防漏的控制措施

文章结合中山市珍家山污水处理厂氧化沟的施工实践，对如何做好氧化沟的大体积混凝土施工及相关工序控制，论述了污水处理池施工中防渗防漏的控制措施。     

中国具有重大影响的50项科技事件(上)

结合中国科协2008年举办的"10个影响中国的科技事件"评选活动,在评选专家组评出30个候选"科技事件"基础上,《科技导报》编辑部补选出20项中国具有重大影响的科技事件,由此确定50项中国具有重大影响的科技事件。这50项科技事件根据评选范围分为"科技成果"、"科技政策"和"科技活动"3大类,其中"科技成果"类24项、"科技政策"类12项、"科技活动"类14项。简要介绍了各项科技事件的内容、社会影响及其现实意义和历史意义。     

Enrichment of trace scandium with microcrystalline naphthalene and subsequent ICP-AES determination

A new method is proposed to preconcentrate and separate trace scandium from a large volume of aqueous solution by solid liquid extraction with microcrystalline naphthalene. Scandium oxinate can be adsorbed onto microcrystalline naphthalene quantitatively under certain conditions. The effects of various experimental parameters have been optimized. The influence of additive of cobalt (II) on recovery of scandium (III) is studied in detail. The proposed method has been used for determination of Sc in Certified Reference Material of “Vehicle Exhaust Particulates”.     

论新材料在当代社会发展中的作用

随着新材料研究与应用的不断发展，新材料的社会作用问题越来越引起人们的关济。该文通过对大量确凿的历史和当代的资料与数据的分析，论述了新材料的发展是高技术发展的突破口；     

动力学测定痕量邻菲罗啉的研究

研究发现在酸性介质中，痕量邻菲罗啉能灵敏地加速过氧化氢氧化二甲苯胺蓝褪色的指示反应。研究了该反应的最佳条件及动力学参数，建立了一种测定痕量邻菲罗啉的新方法。方法检测限为１．０７×１０－８ｍｏｌ·Ｌ－１邻菲罗啉，测定范围为０～６×１０－６ｍｏｌ·Ｌ－１邻菲罗啉，用于测定试样中痕量邻菲罗啉，获得了满意的结果。