相转移催化合成N,N-二乙基氨基乙基苄基醚

以二乙氨基乙醇、氯化苄为原料,四丁基溴化铵为相转移催化剂,氢氧化钠固体为碱,苯为溶剂,经 Wimamson 醚化反应高产率合成 N,N-二乙基氨基乙基苄基醚,收率可达80％。考察了催化剂、温度、溶剂、反应时间、投料比对此醚化反应的影响,确定了最佳合成条件。产物经过沸点、红外光谱、~1H-核磁共振谱给予确证。     

拒腐防变把握自我

拒腐防变重在把握自我。法律的制约,制度的约束,群众的监督,这是拒腐防变的外部监控机制。然而,共产党员如果忽视自身世界观的改造,摆不正自己的位子,不能正确行使权力,在金钱、美女诱惑下就可能企图超越法律、摆脱监督、铤而走险,最终走上犯罪的道路。因此,要正确地认识自己,自觉地接受监督,把握人生航向,抵制各种腐朽思想的侵蚀,洁身自好,这是世界观改造的最基本要求。堤防首先要从自己的思想和行为筑起,才能立于不败之地。在当今物欲横流的社会,共产党员更要经得起各种环境的考验。     

菲骈吲哚里西定生物碱的分离与化学结构鉴定

以生测活性跟踪牛心朴子草地上部分醇浸膏中抗烟草花叶病毒 (TMV)有效组份的化学分离 ,经凝胶色谱、硅胶柱层析等液液分离得到三个纯物质 .经理化常数、波谱分析与文献对照 ,鉴定它们是菲骈吲哚里西定生物碱 ,包括 (1 ) 7-脱甲氧基娃儿藤碱 .(2 ) N-氧化 -7-脱甲氧基娃儿滕碱 .(3 )娃儿藤硅 .它们是已知化合物 ,但由牛心朴子草分离得到 (2 )是首次报导 .     

析《诗经》中“有”的意义和用法

从两方面解析《诗经》中"有"的意义和用法。首先解析"有 名词"中,"有"具有以下四种意义和用法:一,"有""无"相对,为动词;二,与表抽象意义的名词组合,构成相对稳定的词组;三,表语助词;四,"有"字用法的个例及其固定结构。其次在"有 形容词"中,提出对传统的"重言"、"X然"、"……貌"训释的质疑,将"有 形容词"中的"有"解作表程度的副词。     

从社会语言学角度看“X+女”族汉语新词

新词语既是一种语言现象,又是一种社会现象。研究新词能为更深层地认知语言,跟踪社会的发展轨迹和前进方向提供重要依据。"X+女"族词语属于近年涌现的新词汇。本文从社会语言学角度出发,对"X+女"族词语的构词特点、词源等进行了分析,重点联系社会因素对"X+女"族新词的成因加以分析和阐释,将更好地揭示社会与语言之间的互动关系并对新词的研究起到借鉴作用。     

“结合论”的结晶——评《战国楚方言音系》

＂结合论＂是运用多种方法对汉语史的各种材料进行综合研究的指导思想,是当今学界公认的研究汉语史的方法论。赵彤《战国楚方言音系》正是此思想指导下产生的结晶,该著创获良多,是对＂结合论＂的综合实践,也是实践＂结合论＂的典范。     

Attitudes of mental health professionals about changing ages of legal majority

Questionnaires were sent to mental health professionals surveying their attitudes toward legal age limits which govern the rights of the young to make decisions for themselves. Inquiries were also made about respondents' opinions of the impact that increasing those rights might have on their professional interactions with young people. Responses were received from 69 predominantly young professionals and reflected a fairly libertarian outlook toward the rights of minors. Discussion emphasized the value of consulting with mental health professionals who work with children when shaping and interpreting new standards of autonomous decision making.     

Bivariate control charts for testing x data patterns

A new control chart, called the θ chart, for monitoring the mean of a process with bivariate quality characteristics is proposed. It can identify a rotation, shift or alternation between the subgroups of the process mean. The conventional application of X² chart to identify a sudden shift of the process mean is also expanded to identify a change of the process mean or a change of the process dispersion. Furthermore, when used together, the θ and X² charts could provide further insight into the process.     

“3＋X”下政治教学模式探索

"3 X"提出了新的高考模式及其命题指导思想的转变,给思想政治课教学带来新的机遇和挑战.本文探讨如何适应现代教学体制,更加有效地组织好本学科教学,促进学生全面发展,培养学生的创新意识和实践能力,提高综合素质.     

Protectionism: Old wine in new bottles

This paper addresses some new types of arguments that have recently arisen in defense of protectionism in developing and developing countries. The new sources of protectionism in developing countries discussed are: (1) recession-debt-crisis costs; (2) protection in the world economy; (3) wages and labor markets; (4) political requirements. The new arguments for protectionism in developed countries discussed are: (1) shift to the service economy; (2) defense; (3) threat of protection to induce foreign investment.