H_2S对Q235钢在CO_2介质中的腐蚀影响及缓蚀研究     

黄先球  郎丰军  程鹏 《武汉工程职业技术学院学报》2014,(2):24-27

采用失重法研究了H2S对Q235钢在CO2介质中的腐蚀影响及咪唑啉缓蚀剂的缓蚀性能,并用电子探针分析了Q235钢表面的腐蚀产物膜,结果表明:常压CO2-H2S溶液中,H2S加速了CO2的腐蚀,在高压CO2-H2S溶液中,Q235钢腐蚀速率的对数lgRCO2-H2S与二氧化碳分压的对数lgPco2不成线性关系,实验室合成的咪唑啉化合物具有较好的缓蚀效果。  相似文献   

Technological pervasiveness and variety of innovators in Green ICT: A patent-based analysis     

Grazia Cecere  Nicoletta Corrocher  Cédric Gossart  Muge Ozman 《Research Policy》2014

Many eco-innovations have been linked to technical change in the ICT domain. Leveraging the distinctive features of general purpose technologies, ICT have the potential to steer green growth and to help decouple this growth from ecological damage. The paper aims to shed light on innovation dynamics in this emerging sector by investigating the patterns of innovation in the green ICT domains using granted EPO patent data from 1986 to 2006. By means of a network analysis, it identifies existing green ICT domains and examines the characteristics of innovative activity in these domains, focusing in particular on growth and technological pervasiveness, as well as on the variety of innovators. Results indicate that the innovative activity in green ICT domains is characterised by high growth and high levels of technological pervasiveness, considerable entry of new innovators and a variety of actors – with a prevalence of large ICT firms and universities. However, the analysis highlights the existence of three different clusters – emerging fields, established fields and mature fields – that are defined by different structures of innovative activities and by different technological opportunities.  相似文献   

Repertoires of teaching and learning: A comparison of university teachers and students using Q methodology     

Amanda LeCouteur  Paul H. Delfabbro 《Higher Education》2001,42(2):205-235

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阿炳与贝多芬创作风格之比较     

李焱 《山西广播电视大学学报》2004,(4):89-90

同为音乐巨匠 ,阿炳和贝多芬为人类留下了永恒的音乐 ,他们的身世极为相似 ,然而创作风格却迥然不同  相似文献   

谈阿来小说的叙事艺术     

胡立新  沈嘉达 《黄冈师范学院学报》2003,23(2):40-43

阿来的小说《尘埃落定》和《遥远的温泉》有着明显的诗化叙事倾向,其诗化叙事艺术又具有颠覆传统叙事性小说的理性规范的特征,主要表现为多重叙事视角叠置,非性格化典型化叙事,叙事逻辑的颠覆,非中心化叙事等方面。阿来小说的叙事诗化倾向有着自身的独特原因及价值。  相似文献   

从阿Q看鲁迅精神的复杂性     

张典 《南京师范大学文学院学报》2002,(4):77-81

鲁迅眼中的阿Q应该是晚清时代的中国人的代表，鸦片战争与宋明理学对产生阿Q精神有很大影响。《阿Q正传》的前后断裂隐含了鲁迅的精神矛盾，鲁迅大体是在理智方面选择西方价值，而在情感方面丢不开中国旧传统。  相似文献   

性心理变态与阿Q性格形成之关系     

王泓 《淮南师范学院学报》2001,3(4):78-80

文章试图突破传统的思维理念和评论模式,以新颖的视角,扎实的理论,深入剖析性心理变态对阿 Ｑ性格核心——精神胜利法的形成、发展所起的作用,对阿Ｑ的性格内涵的认识更为丰富、真实、深刻。  相似文献   

基于Q235生产工艺实施B级船板的试验轧制     

苑少强  褚祥治  王春  刘义 《唐山学院学报》2008,21(2):1-2

测试了Q235碳素钢板与B级船板的性能差距,通过成分设计和控制轧制,在试验轧机上开发了B级船板钢,性能达到中国船级社的要求。分析表明:严格控制S,P的含量,并进行适当的控轧,可以显著提高船板的冲击韧性,并使组织更加均匀和细化。  相似文献   

梾木属的一新亚属——华茱萸亚属     

向秋云 《中国科学院研究生院学报》1987,25(2):125-131

Cornus L. s. 1. is a large polytypic genus. The classificantion of which has been so different that some authors recognize several separate genera, while others treat them as ei- ther subgenera or sections.  New evidence from many disciplines such as palynology, cyto- logy, wood anatomy and embryology supports the view that the genus should remain in the broad sense.  I basically agree with the treatment by Ferguson (1966b) before my finishing a comprehensive study on Cornus L. s. 1. except for supporting  the separation  of subgenus Afrocrania as an independent genus.  A new subgenus Sinocornus Q. Y. Xiang, containing one species, C. chinensis Wangerin, is established here on account of its inflorescence axillary and different from the other members of the genus which all have terminal inflorescences only. The inflorescence developed from a terminal bud implicates the sympodial nature of axis of stem and the one from an axillary bud the monopodial one.   It is reasonable to regard the character as of subgeneric value.  Also a new combination, Cornus subgen. Syncarpea (Na- kai) Q. Y. Xiang, is proposed here as a substitute for Cornus subgen.  Benthamia (C. B. Clar- ke) Schneider used for a long time.  Because the valid publication of the former name subgen. Syncarpea Nakai is earlier than the latter one.  The types of inflorescences of 8 subgenera re- presented by type or selected species are illustrated.  相似文献   

四川无心菜属（石竹科）一新种     

李安仁  班勤 《中国科学院研究生院学报》2003,41(4):390-392

描述了四川无心菜属（石竹科）一新种——道孚无心菜Arenaria dawuensis A. J. Li&Q. Ban。该种具纺锤形根，聚伞花序，花柱2，线形而与纟遂瓣无心菜A. fimbriata（E. Pritz. ）Mattf. 相近，但叶匙形，萼片边缘具长缘毛，花瓣短于萼片，顶端细流苏状而不同。  相似文献