新型表面活性剂3-十二烷氧基-2-甲基丙酸钠的合成

通过增加皂类表面活性剂分子中亲水基的总数，可以提高其抗硬水性能，为此，在亲油基与羧基之间引入烷氧基，该研究以甲基丙烯酸和十二醇的主要原料，采用加成，酯化，取代，皂化四步法合成3-十二烷基-2-甲基丙酸纳，其中，杂多酸对酯化反应起到了催化和阻聚双重作用；相转移催化剂用于取代反应，简化了操作，缩短了反应时间，提高了产率。     

培养反思-探究型教师:芬兰研究取向教师教育探析

芬兰研究取向的教师教育把教学视为一种基于研究的思维活动,认为教师所做的研究是一种实践探究.这种教师教育模式将发展师范生的教学思维确定为培养目标,将教师培养过程设计为从基础阶段向概念化阶段的发展,把实践设计为教学实践和研究实践两部分内容.在培养过程中具体采用理论学习—实践—研究的整合模式实施,师范生研究方法的学习贯穿计划始终,教学实践分三个阶段、三种水平循序渐进地开展.     

女性情怀辉映男子气概——试论薛涛诗歌中的双重情感

唐代女诗人薛涛,一生命运坎坷,但她以诗作在文学史上留下了自己的足迹。薛涛的诗,是其经历的文学记录,更是其心声的表露。一方面,她的诗是其女性情怀的表露,这是她遭受男权世界压迫的曲折表现;另一方面,她的诗又表露出强烈的男子气概,这与她长期与男权世界中的精英人物酬唱有关。全面认识薛涛,应该认识到薛涛诗歌情感世界的双重性。     

正确认识和对待私营企业主入党的问题

私营企业主能否入党是一个众说纷纭的敏感问题。我们认为有中国特色社会主义事业的建设的定性决定了优秀的私营企业主可以入党；发展优秀的私营主入党是扩大党的群众基础的需要。在发展优秀的私营企业主入党问题上，应该把握好发展党员的方针政策、原则和程序以及对优秀私营企业主的考察培养。     

关于现代高师音乐教育改革的思考

根据长期的教学实践,社会调查和一些专题研究,对师范类院校的音乐教育目前存在的危机和现状进行了分析并提出以“两个负责态度”进行教育改革。     

Tandem Biocatalysis by CotA-TJ102@UIO-66-NH2 and Novozym 435 for Highly Selective Transformation of HMF into FDCA

2,5-Furandicarboxylic acid(FDCA) is a potential biorenewable chemical for applications including plastics, polyamides, drugs, etc. The selective biosynthesis of FDCA from 5-hydroxymethylfurfural(HMF) by a specific enzyme poses a great challenge. In this study, we reported an efficient strategy to produce FDCA from HMF by the tandem biocatalysis of laccase(Cot A-TJ102@UIO-66-NH_2) and Novozym 435. For the first step, a nanoparticle metal–organic framework was synthesized as a carrier to immobilize Cot A-TJ102@UIO-66-NH_2, which was assigned for the production of 5-formyl-2-furancarboxylic acid(FFCA) and featured an enzyme loading of 255.54 mg/g, specific activity of 135.90 U/mg, and solid loading ratio of 99.65%. Under optimal conditions, an ideal FFCA yield of 98.5% was achieved, and the Cot A-TJ102@UIO-66-NH_2 presented a high recycling capacity after 10 cycles. For the second step, Novozym 435 was applied for the further conversion of FFCA into FDCA, presenting a high FDCA yield of 95.5% under the optimized conditions. Novozym 435 also exhibited a high recyclability after eight cycles. As a result, the tandem biocatalysis strategy provided a 94.2% FDCA yield from HMF, indicating its excellence as a method for FDCA production.     

用Authorware构建多媒体软件框架的三种方法

文章介绍了在Authorware多媒体软件中实用性很好的组建整体结构的三种方法：常见交互图标应用法、导航图标应用法、文字超级链接法。将课件中的多种信息模块化地组织在一起，为课件制作者带来很大的方便性和灵活性，且在媒体软件制作方面有着广泛的应用。     

Investigation of iodine concentration in salt,water and soil along the coast of Zhejiang,China

Objective: We aim to describe the environment iodine concentration in salt, water and soil along Zhejiang Province coast in the China foreland. It will be helpful for us to judge whether this area is insufficient in iodine and universal iodized salt is necessary or not. Methods: We collected iodized salt samples, drinking water samples (tap water in the towns, and well water or spring water in the villages), water samples from different sources (ditches, lakes, rivers) and soil samples through random sampling in June, 2005. Salt, water and soil iodine was detected by arsenic-cerium redox method. Statistical analysis was expressed as mean±SEMby Windows SPSS 13.0. Results: (1) The iodine concentration in salt was 27.9±4.33 mg/kg (n=108). (2) Seventy-five water samples were collected. The water iodine value was 0.6～84.8 μg/L (mean of 11.66 μg/L). The watershed along the Qiantang River has significantly higher iodine content than the water in Lin'an in mountain area (P＜0.01). The iodine content and mean iodine content of tap water, well or spring water and natural water sources were 4.30±2.43 μg/L (n=34), 23.59±27.74 μg/L (n=19)and 12.72±10.72 μg/L (n=22) respectively. This indicated that among environmental water sources, the ditch iodine content was the highest with river water iodine being the lowest (P＜0.01). (3) Soil iodine value was 0.11～2.93 mg/kg (mean of 1.32 mg/kg).Though there was no statistical difference of soil iodine in different districts (P=0.131), soil iodine content correlated positively with water iodine content. Conclusion: Iodine concentration in salt accords with national policy of adding iodine in salt. Foreland has more iodine in water than mountain area. The data reflected that water and soil iodine in foreland area was not high, which suggests universal iodized salt should be necessary. Environment iodine has relatively close association with pollution.     

对现代化教学技术在音乐教学中唯上的批判——兼论教师在音乐教学中的核心作用

在目前的音乐教育课程改革过程中,存在着对现代化教学技术手段的运用“唯上”的误区,如何走出这一误区?广大音乐教师应该有如下的意识:现代化教育技术的运用并不是一节有效音乐课实施的关键所在,音乐教育也不是只有运用了现代化教育技术才能有所作为,而新课程改革的重点更不是落在对现代化教育技术手段的运用上,音乐教师的教学艺术才是成就一堂高质量音乐课的关键因素。     

关于地方人大工作的思考

人民代表大会制度是我国的根本政治制度,地方人大是国家权力机关。有效发挥其作用是宪法的要求,也是构建法制国家的基础。地方人大在工作中存在一些不到位的地方,其原因是多方面的。进一步完善地方人大的工作,应该更关注权力制约机制和执政党的科学执政。同时强化人大委员的职责,在全社会加强民主意识的宣传普及。