基于纳米材料的免疫层析试纸在兽药残留检测中的应用

兽药残留是食品安全的重要影响因素,开发兽药残留检测方法是保证食品安全的重要手段。免疫层析试纸是一种操作简单、生产成本低且具有良好灵敏度的检测方法,适用于现场检测、大规模食品筛选,在兽药残留检测中具有巨大的应用价值。纳米材料可提供特殊的检测信号,是影响免疫层析试纸检测灵敏度和定量分析的关键因素。文章主要对胶体金、磁性纳米材料、量子点以及时间分辨荧光微球这几种纳米标记材料进行介绍,指出各自的优缺点及应用情况,并对该技术在兽药残留检测中的应用趋势进行展望。     

Composition of Application Based on Business Rule

In order to support flexibility and reusability of application composition based on Internet,with business rule and Aspect-Oriented Programming(AOP) which divides a business process into a control business process and a core business process,the authorsgive composition mechanism.A technique of implementation is analyzed.At last,the primary application of the above work in Chongqing of China is introduced,as well as some effects acquired.     

兽药制剂中氯霉素类和硝基呋喃类药物的液相色谱-串联质谱分析方法的研究

建立了兽药粉剂中氯霉素类和硝基呋喃类共7种抗菌药物的液相色谱-串联质谱筛选方法。样品经水溶解,乙酸乙酯提取样品中的药物,OasisHLB固相萃取小柱净化,液相色谱-串联质谱仪测定。分别对该方法的检测限和专属性进行了实验室内和实验室外验证。结果表明,该方法简单、灵敏、特异性强,适用于兽药粉剂中氯霉素类和硝基呋喃类的定性筛选测定。     

2010年全国兽药质量监督抽检分析

根据农业部下达的2010年兽药监督抽检计划,2010年共抽检兽药13080批,合格产品共11926批,合格率为91．2％,比2009年兽药监督抽检合格率提高了3．8个百分点,兽药监督抽检合格率有了明显的提高。从抽检类别分析,评价性抽检合格率（93．7％）最高;从抽检环节分析,生产环节抽检合格率（97．2％）最高;从抽检的产品类别分析,化药类产品抽检合格率（92．6％）最高。建议加强对企业不确认产品的监督与核查,加强对违法、违规行为的查处,从而进一步提高兽药监督抽检的效果。     

2010年版《中华人民共和国兽药典》二部编制特色

与历版兽药典相比,2010年版《中华人民共和国兽药典》二部更加体现出了中兽药的特色,通过专属性鉴别、检测和新技术的应用,使中兽药在安全性、有效性和可控性等方面得到了极大的提高;并对中兽药鉴别、含量测定、性味与归经、用法与用量、注意事项和中药材拉丁名、拉丁学名等进行了大幅度的修订和规范。     

兽药生产过程中导致产品不符合质量标准的问题分析

从质量标准的角度,论述了兽药生产企业在生产过程中,导致产品不符合质量标准的几种问题,并对这些问题进行了分析,意在引起企业的注意,减少不合格产品。     

兽药粉剂中氯霉素类和硝基呋喃类药物的液相色谱-串联质谱分析方法的研究

建立了兽药粉剂中氯霉素类和硝基呋喃类共7种抗菌药物的液相色谱-串联质谱筛选方法。样品经水溶解,乙酸乙酯提取样品中的药物,OasisHLB固相萃取小柱净化,液相色谱-串联质谱仪测定。分别对该方法的检测限和专属性进行了实验室内和实验室外验证。结果表明,该方法简单、灵敏、特异性强,适用于兽药粉剂中氯霉素类和硝基呋喃类的定性筛选测定。     

辽宁省森林生态系统服务功能及其价值初步研究

从生态系统服务功能的概念入手,根据2005年辽宁省森林资源清查数据和有关研究资料,采用替代工程、市场价值等方法,从直接经济价值和间接经济价值两方面评价了辽宁省森林生态系统服务功能的价值。     

Environmental services and poverty reduction: Options for smallholders in the Sahel

Environmental service provision is increasingly discussed as a potential new venue for the simultaneous pursuit of development and natural resource conservation objectives, particularly among landowners in the low-income tropics. To date, most of the experience with such market-regulated mechanisms comes from water and forest projects in Latin America. Preliminary evidence suggests that participation of, and benefits to, small-scale land users are highly unequal and that the synergistic goals of poverty reduction and resource conservation through these emerging market mechanisms might be overly ambitious. This paper assesses the possibility of pro-poor environmental service provision through carbon sequestration among smallholders in the Sahel. It focuses on a case study in the small-scale, rain-fed agricultural systems of the Old Peanut Basin of Senegal. Based on a conceptual framework including economic, institutional, policy and livelihood factors, it assesses to the extent to which specific groups of farmers are able or willing to participate in and benefit from potential carbon offset programs. Finally, the paper stresses the need for adequate and equitable financial support and a careful rethinking of the institutional structures necessary to enhance rural livelihoods and natural resource management in drylands, with or without market-based environmental service programs.