[Objective]soil nitrification potential (NP) and its main influencing factors in fluvoaquic soils were studied based on a long-term fluvo-aquic soil fertilization experiment in Zhengzhou, Henan Province. [Method]Three tracts of farmlands of fluvo-aquic soil different in fertility level, i.e.High (applied with chemical fertility plus organic manure) ; Moderate (applied with balanced chemical fertilizers) ; and Low (applied with no fertilizer or no N fertilizer) , were selected for soil sampling for analysis of total N (TN) , ammonium nitrogen (NH4+-N) , nitrate nitrogen (NO3--N) , microbial biomass C (MBC) and microbial biomass N (MBN) . And stepwise regression analysis, path analysis and variance decomposition analysis (VDA) were performed to define main influencing factors in fluvo-aquic soil relative to soil fertility and quantify contribution of each factor to NP. [Result]Results show that NP in the fluvo-aquic soils varied in the range of 0.3～1.1 mg·kg-1 h-1, and differed significantly between the soils.It was 7.9％ higher in the soil high in fertility than in the soil moderate in fertility, and 162.5％ higher in the soil moderate in fertility than in the soil low in fertility. Among all the soil fertility indices, MBC, NO3--N, TN and MBN were found to be the main influencing factors of soil NP. MBC, NO3--N and MBN affected NP directly, while TN did more indirectly. The contribution rate of microbial biomass (MBC and MBN) , NO3--N and TN to NP variation is worked out to be 24.3％, 18.9％ and 13.7％, respectively. The contribution of four main influencing factors' interaction effects to the variation of soil nitrification potential has reached to52.8％, while the total contribution of each variant and its interaction effects amounted to 92.9％. Therefore, it can be concluded that nitrification is much stronger in soils of high fertility than in soils low and moderate in fertility. [Conclusion]As result of strong nitrification, ammonium nitrogen is nitrified into nitrate nitrogen, which is readily accumulated and/or leached. It is, therefore, essential to regulate soil water and nutrient regimes to a proper level so as to reduce soil nitrification intensity and eventually achieve the target of constructing a nitrogen nutrient pool and reducing nitrogen loss in fluvo-aquic soils.

基于当前事业单位体制改革不断深入的新形势下,事业单位行政管理工作的重要性得以突显.为了确保事业单位各项工作有序开展,需要重视行政管理机制的创新,全面提高事业单位行政管理工作的效率和质量.

随着科技信息化时代的到来，电子信息化技术被广泛应用。电子信息化技术应用于现代档案管理中，既提高了档案管理效率，又提升了档案管理质量；新技术的应用对传统管理模式也是一个冲击，实现档案管理模式的转变，为档案管理注入了新的活力。本文从电子信息化技术在现代档案管理中应用的意义出发，分析了电子信息化技术在档案管理中应用的现状，并针对存在的问题，提出了解决的措施。

随着社会的快速发展,事业单位行政管理改革工作得以不断深入,这不仅有利于事业单位整体效率的提升,而且对我国经济体系的发展具有积极的促进作用.事业单位行政管理水平的高低与事业单位竞争能力息息相关,基于公共管理视角出发,需要快推动事业单位行政管理改革工作,为事业单位的健康、持续发展奠定良好的基础.

开展和创新档案服务是科研机构档案部门履行职责、满足科研活动档案利用需求的基本途径.在新的历史条件下,科研机构档案部门要充分发挥自身独具的资源优势,切实履行自身的职责功能,为科研机构的业务活动提供强有力的档案服务支撑.只有不断提高科研机构档案服务创新能力,科研机构档案管理部门才能获得广泛认可、为自身的发展赢得良好的工作环境与发展动力.

行政管理作为一系列的管理活动，是运用国家权力对社会事务进行的管理，属于一种社会管理活动。而德性是一种道德品性，是个人品行和社会品德的重要体现，行政管理中的德性即是行政管理工作需要具备的重要社会品德。行政管理中德性具有较好的导向、整合和操作价值，同时对行政管理主体的德性也具有一定的要求。文中针对行政管理中德性的价值入手，分析了行政管理主体的德性要求，并进一步对行政管理中德性的培育路径进行了具体的阐述。

档案征集工作是丰富馆藏资源的重要途径,由于受历史变迁和自然环境等因素的影响,大量档案资料分散于各地区及机构组织,或散落在民间,甚至流失海外,部分档案资料的保护状况令人担忧.为此,加强档案征集工作,让珍贵档案及时得到保护、利用并满足社会发展的需要,成为档案部门义不容辞的责任.笔者从大量实践经历上分析,认为加强档案征集工作应当围绕以下方面组织开展.

牛曼氏杆菌病由是溶血性曼氏杆菌(Mannheimiahaemolytic)引起牛的一种急性热性传染病,又称为"船运热"(Shiping fever),绵羊、山羊等其他反刍动物也有发生.以高热、肺炎、急性胃肠炎为特征.

溶血性曼氏杆菌病是牛、羊等反刍动物的重要呼吸道疾病,溶血性曼氏杆菌是该病的病原.对于溶血性曼氏杆菌而言,最引人注目的致病特征是抗菌药物抗性基因的高度变异性,最终表现出对大部分抗菌药物抵抗力的不断增加.