论有机合成中的选择控制方法

论述了在有机合成中选择控制的重要性,结合教学实践归纳总结了各种选择控制的策略和办法。     

关于高师院校科技创新的思考

本文基于对高师院校科技创新及其运行机制的现状分析,通过借鉴国内外成功的科技创新组织形式的经验,提出了高师院校实现科技创新的基本途径。     

Adoption of Agri-Environmental Measures by Organic Farmers: The Role of Interpersonal Communication

Purpose: The purpose of this study is to investigate the impact of interpersonal communication on the adoption of agri-environmental measures (AEM) by organic farmers in Germany.

Methodology: The study used the logit model to predict the probability of adoption behaviour, and Social Network Analysis (SNA) was conducted to analyse the question of whether validating information about organic farming provided by interpersonal information sources is associated with communication frequency.

Findings: Our findings demonstrate that being an early adopter of organic farming practices and frequent contact with young and highly educated farmers increases the probability of adoption of other AEM. However, contact frequency in interpersonal networks was found not to be a significant determinant for explaining adoption decisions. Frequently communicating farmers in the network are more likely to attribute higher levels of importance to organic farming information received from formal actors than to information received from informal actors.

Practical Implications: If young and highly educated farmers, who can be considered as informal opinion leaders, are approached by the extension services, then an effective diffusion of information on AEM can be expected. To support the AEM adoption, a platform should be provided by state agencies that would enable organic farmers to understand the environmental benefits achieved over the time.

Originality/value: This study contributes to the scientific discussion on the role of interpersonal communication on AEM adoption. A new aspect is our consideration of organic farmers adopting additional AEM. Moreover, we highlight organic farmers' validation of the importance of formal and informal information sources on organic farming.     

Influence of bulking agents on CH4, N2O,and NH3 emissions during rapid composting of pig manure from the Chinese Ganqinfen system

研究目的：在＂干清粪＂系统猪粪堆肥过程中,不同添加剂（玉米秸秆、锯末和蘑菇渣）处理对甲烷、氧化亚氮和氨气排放的影响。创新要点：将不同的添加剂（玉米秸秆、锯末和蘑菇渣）应用到快速堆肥系统中进行堆肥,测定了猪粪堆肥过程中甲烷、氧化亚氮和氨气的排放规律,为国内猪粪堆肥的应用提供理论指导。重要结论：玉米秸秆作为添加剂能增加猪粪堆肥过程中氧化亚氮的排放;蘑菇渣添加剂增加了堆肥过程中甲烷的排放,然而减少了氧化亚氮及氨气的排放;锯末处理能增加堆肥过程中氨气的排放。添加剂能显著影响堆肥过程中氮素的损失。     

浅析人本主义指导下的有机化学教学

文章以人本主义教育理论为指导,从以下三个方面对有机化学教学进行探析：如何以人为本激发学生的内在潜力;如何转变教师的角色;如何建立激发学生的兴趣的有效机制.从而培养学生的能力,提高学生的综合素质.     

无溶剂有机合成新进展

无溶剂条件下的有机合成,具有收率高、选择性强、操作简便、成本低及无环境污染等优点,是绿色化学的重要内容.综述了近年来发现的无溶剂有机反应类型.     

信息化与资本主义资本有机构成的变动趋势

工业化时期资本的有机构成呈不断提高趋势,信息化的发展改变了资本主义的投入结构,可变资本的投入不断增加,不变资本相对减少,导致资本的有机构成趋于下降,资本主义的平均利润率上升,加剧了发达资本主义国家的两极分化。     

试述有机化学微型实验仪器的使用及实验特点

试述了有机化学微型实验仪器的使用及该实验具有的省药品、省时间、污染少、易操作、安全可靠、教学效果好等特点。     

有机絮凝剂对渣土废泥浆脱水效果影响

针对地铁盾构出来的渣土废泥浆污染环境,不便施工的现状,本文研究了有机絮凝剂(阴离子型聚丙烯酰胺、阳离子型聚丙烯酰胺以及两者复掺)对不同含水率下的渣土废泥浆絮体含水率、上清液浊度以及絮体大小等指标的影响。研究结果表明:不同种类的有机絮凝剂在不同掺量下均能改善渣土废弃浆脱水效果,并且针对不同含水率的废泥浆存在着最佳掺量不同;随着渣土废泥浆含水率的降低,有机絮凝剂的最佳掺量均逐渐增加;采用单掺阳离子型聚丙烯酰胺絮凝剂可明显提高渣土废泥浆的脱水效果。     

中医药类大学有机化学“第一堂课”教学实践探索

有机化学内容覆盖面广,知识博大精深,学生在学习时普遍感到内容多、头绪乱。笔者多年来一直探索一种行之有效的方法,能在“第一堂课”的教学中引导学生真正理解各类有机反应发生的原因、反应历程及相关规律,消除学生的畏难情绪,激发学生的学习热情。