持久性有机物污染物二恶英环境污染问题的研究

本文介绍了持久性有机污染物二恶英的结构、毒性、污染来源、形成机理、主要危害和预防措施。     

在有机化学实验中培养学生的素质

介绍了在有机化学实验教学中如何培养大学生素质 ,提供了几种培养学生素质的途径。     

论莱维托夫"有机形式"诗歌创作思想

莱维托夫是美国20世纪有影响的诗人之一,50年代她提出了"有机形式"的诗歌创作理念并终生为之努力.她的"有机形式"思想主要包括:1、诗人驰骋在艺术王国里追寻着一种无上的精神和理想;2、艺术家要善于择取平凡事物入诗,以超凡的眼力平衡理想与现实,探索艺术的灵魂;3、艺术与生活息息相关,诗人须投身社会生活,以提升诗歌的品质.简言之,她的"有机形式"创作思想是建立在对生命艺术整体认识的基础之上.     

有机波谱分析课程教学改革浅析

针对有机波谱分析课程的特点,通过精选教学内容、采用灵活多变的教学方法、变学生由被动接受者为主动参与者等改革措施,激发了学生的学习兴趣,提高了学生的学习效果．     

Fertilization increases paddy soil organic carbon density

Field experiments provide an opportunity to study the effects of fertilization on soil organic carbon (SOC) sequestration. We sampled soils from a long-term (25 years) paddy experiment in subtropical China. The experiment included eight treatments: (1) check, (2) PK, (3) NP, (4) NK, (5) NPK, (6) 7F:3M (N, P, K inorganic fertilizers+30% organic N), (7) 5F:5M (N, P, K inorganic fertilizers+50% organic N), (8) 3F:7M (N, P, K inorganic fertilizers+70% organic N). Fertilization increased SOC content in the plow layers compared to the non-fertilized check treatment. The SOC density in the top 100 cm of soil ranged from 73.12 to 91.36 Mg/ha. The SOC densities of all fertilizer treatments were greater than that of the check. Those treatments that combined inorganic fertilizers and organic amendments had greater SOC densities than those receiving only inorganic fertilizers. The SOC density was closely correlated to the sum of the soil carbon converted from organic amendments and rice residues. Carbon sequestration in paddy soils could be achieved by balanced and combined fertilization. Fertilization combining both inorganic fertilizers and organic amendments is an effective sustainable practice to sequestrate SOC.     

论风水中的生态思想

风水观念起源于人类对生态环境认识、选择与实践的结果,并不全是封建迷信的东西。风水中包含着人与自然的协调关系,其主要体现在三个方面:一是大地有机自然观,二是"藏风聚气"的生态理想,三是环境保护的思想。     

高效液相色谱法测定武夷橙中的有机酸

利用反相高效液相色谱法研究了武夷橙中7种有机酸的分离测定条件。采用C18为分析柱,以2.5%磷酸二氢铵缓冲溶液（PH=2.5）为流动相,流速为1mL/min,紫外检测波长在210nm处可以很好的分离测定有机酸。结果表明峰面积与相应的质量浓度有良好的线性关系,其r大于等于0.9990,平均回收率为98%～110%,该方法具有测定结果准确可靠,重现好等特点。     

高速公路交通事故分布规律及多发位置的鉴别研究

依据宁连高速公路北段大量交通事故资料,采用统计分析的方法,得出交通事故的时间分布、事故形态分布、事故交通方式分布、气候分布的规律,并分析交通事故在各种状态下的原因。采用适合本路段的累计频率曲线法进行鉴别,寻求最佳曲线进行拟合,得出事故多发位置,并对事故多发的原因进行简要分析。     

Based on Design Method of Regional Architecture

In face of energy crisis,raw materials exhaustion,environmental pollution and other environmental issues caused by the current social and economic development model,theory and method of regional architecture have been noted and studied by persons in the field of architecture and ecology.In the paper,the author analyzes architectural region,interprets regional architecture of Mario Botta and summarizes organic theory with a view to recognizing the importance of regional architecture method and reflecting on the significance of architectural region theories at the present times under the background of current globalization and information era.     

问题探究式教学模式在有机合成设计中的应用

文章探索了探究式教学模式在有机合成设计课程中的应用,以问题为切入点,以案例为载体,同时结合启发式、讨论式等多种教学方法,提升了课堂教学效果。实践表明,采用基于问题的探究式教学模式,设置恰当的教学问题,能激发学生的学习兴趣和探究意识,让学生在解决问题的过程中实现知识的升华,达到知识传授和能力培养的目的。