当代大学生炫耀性消费原因探析

大学生炫耀性消费不是一个简单的社会消费现象,对其人生观、价值观和个体发展、社会和谐将产生不可低估的负面影响.大学生炫耀性消费受社会消费文化滞后、大众传媒误导、社会成员消费示范和西方消费主义的影响;受大学消费教育缺失、校园消费环境和参照群体的消费行为的影响;受家长溺爱、家长消费示范和大学生自身心理等因素的影响.社会、高校、家庭要切实承担起教育和引导的责任,大学生自身要把科学合理的消费观内化为日常消费的信条和准则.     

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。     

糠偶酰的合成

以糠醛为原料，VB1为催化剂，采用安息香缩合反应合成糠偶姻，并利用硫酸铜-吡啶氧化其为糠偶酰．给出较好的实验条件，使合成糠偶酰的产率从37％提高到90％．利用元素分析、GC－Mass联用、IR和UV谱等手段，对所合成的糠偶姻及糠偶酰进行分析表征.     

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；