序言

<正>A model organism is a non-human species that is extensively studied to understand particular biological phenomena,with the expectation that discoveries made in the organism model will provide insight into the workings of other organisms.模式生物是一类为了揭示特殊生物学现象而广泛采用的非人类种属,通过对模式生物物种进行的科学研究可以类推到同类或其他类别生物的某种具有普遍规律的生命现象。如今,模式生物的研究     

Impact of cleaner production on business performance

Extensive research has examined the relationship between environmental management/performance and business performance but yielded no conclusive results. This paper makes two contributions to the literature. First, instead of focusing on one aspect, we try to compare using various types of cleaner production activities: low- and high-cost activities. Second, the study complements the existing literature which focuses on firms in developed countries with an analysis of firms in the Chinese manufacturing industry. In this paper, the relationship between cleaner production and business performance was analyzed using Structure Equation Model (SEM). We find an overall positive impact of cleaner production on firm's business performance. We also found that the cleaner production activities of low-cost scheme have a bigger contribution to financial performance compared to non-financial performance, while cleaner production activities of high-cost scheme have a greater contribution to non-financial performance, compared to financial performance. This study should be useful for firms that consider adopting cleaner production as well as stakeholders who aim to promote cleaner production.     

浅议现代企业安全管理需要法治

简述了现代企业安全管理必须加强法制建设。只有逐步形成以法治为保障的安全管理模式，企业才能不断自我完善和发展。     

电子废弃物回收处置及再循环利用——基于在校大学生的问卷调查

随着现代科技的迅猛发展和人们消费水平的日益提高，越来越多的电子产品被时尚性淘汰，其次是功能性淘汰，而由于耐久性淘汰的电子废弃物所占比例越来越低。问卷调查结果表明，体验消费、追求时尚和更多功能是在校大学生消费电子产品的主要特征；大多数被调查者不满意目前的电子废弃物回收途径，期待能有所改善；接近三成的在校大学生不知道如何合理处置电子废弃物；消费者、生产者和废品回收者的环保意识水平较低，市场不规范和政府在法律法规及监管上的疏漏，是造成目前电子废弃物回收市场秩序混乱的主要原因。     

建立优质种苗示范基地，加快发展海南椰子产业

通过对海南椰子生产现状的分析，本文指出了建立优质良种椰子种苗生产示范基地的必要性和重要性，并针对一些需要解决的问题，提出了加快海南椰子产业发展的建议。     

Product modular design incorporating life cycle issues - Group Genetic Algorithm (GGA) based method

Traditional design methods lead to serious environmental problems because of the oversight of life cycle issues such as recycling. For solving these problems, a new modular design method is proposed with the considerations of not only the traditional function related attributes, but also the life cycle related ones. These attributes form what we call Modular Driving Forces (MDFs). The proposed method first determines what MDFs should be included and what their weights should be. Then the component to component relations with each specific MDF are generated and expressed in a matrix. After that, the comprehensive relations between components with different MDFs are established with the introduction of a comprehensive relation matrix for further modular optimization. Each element in the comprehensive matrix denotes the relation of every two components affected by all the MDFs. Finally, Group Genetic Algorithm (GGA) is employed to conduct modular optimization. The modular object adaptive function constructed for GGA optimization is to maximize the interactions between components within modules. The proposed method is explained by a case study of a refrigerator. Sensitivity analysis shows that the proposed method is robust.     

光助Fenton氧化、化学絮凝法联合处理R盐废水的研究

采用光助Fenton氧化、化学絮凝法联合处理生物难降解的R盐废水,考察了不同反应条件对处理效果的影响。试验结果表明,光助Fenton氧化、化学絮凝法联合处理废水,两者之间存在协同作用,可以提高处理效果,降低处理成本。在最佳试验条件下,R盐废水经光助Fenton氧化、化学絮凝法联合处理后,COD去除率可达90%以上。     

厌氧氨氧化菌的培养与推流式反应器氨厌氧工艺

采用推流式固定化絮体生物反应器培养出高活性的厌氧氨氧化(ANAMMOX)红色颗粒污泥.在稳定运行后,反应器的NH₄⁺-N和NO₂^--N去除率皆大于98%,TN平均去除率为86%,NO₃^--N的生成率约为14%,TN去除负荷达2.56kg/(m³·d).同时考察了进水基质比例对反应器性能的影响,并用扫描电镜观察了颗粒结构.     

泰山顶与济南市大气臭氧浓度变化规律研究

利用2003年7月至9月在泰山顶和济南市3个月的臭氧（O3）自动连续监测数据,对两地O3浓度的频率分布、日变化和日际变化等特征进行对照分析。实验结果表明,泰山顶O3小时平均浓度频率分布比较集中,济南市O3小时平均浓度频率分布比较分散。泰山顶各月O3小时平均浓度的平均值和日均值均高于济南市;泰山顶O3小时平均浓度的最大值低于济南市,而O3小时平均浓度的最小值要高于济南市。泰山顶O3小时平均浓度日变化规律与济南市O3小时平均浓度日变化规律有很大差别,泰山顶O3小时平均浓度日变化很平缓,最大值与最小值相差不大,济南市O3小时平均浓度一般在中午和午后浓度较高,早晨和夜晚较低。     

溶解氧对OLAND生物膜反应器硝化性能的影响及其微生物种群动态研究

采用以多孔球悬浮填料为载体的限氧亚硝化生物膜处理高氨氮、低碳源的废水,通过对DO控制在0.5~1.0 mg/L,实现硝化阶段出水中的氨氮与亚硝态氮的比例达到最适值1∶(1.2±0.2),从而为后阶段的厌氧氨氧化系统提供理想的进水,进而提高氮的去除率;同时应用PCR-DGGE对硝化阶段不同时期的生物膜中微生物的种群动态变化进行了分析。研究表明,群落结构和优势种群的数量具有时序动态性,微生物多样性与废水的处理效果出现协同变化的特征。测序结果表明,在生物膜中进行氨氧化作用的主要为亚硝化杆菌(Ni-trosomonassp.)、亚硝化螺菌(Nitrosospirasp.);进行亚硝酸氧化的主要为硝化球菌(Nitrococcussp.)。