高效液相色谱串联质谱分析黄芩水煎液的有效成分

目的采用高效液相色谱串联质谱(HPLC-MS/MS)联用技术,对黄芩水煎液中的有效成分进行初步分析。方法采用AgilentZORBAXSB-C18色谱柱,以乙腈和水(含体积比0.5%甲酸)为流动相,采用梯度洗脱,流速为0.4mL/min,ESI-MS采用负离子模式。通过HPLC-MS/MS在线测定化合物的一级和二级质谱信息,结合文献报道,对黄芩水煎液的有效成分进行分析鉴别。结果结合文献报道和质谱数据,21个成分通过串联质谱进行了结构鉴定,4个通过对照品得到了确证。结论高效液相色谱串联质谱法是鉴定黄芩药材化学成分的有效方法。     

基于区域联动发展的美丽乡村精品线构建 ——以义乌市“多彩华溪”建设实践为例

通过对浙江省美丽乡村精品线的理论研究与实践分 析，得出美丽乡村精品线既是一条融居住生活、农业生产、休 闲旅游、生态保护等功能于一体的风景带，也是一条链接沿线 各类要素、促进区域联动发展的产业带。以义乌市“多彩华 溪”美丽乡村精品线为例，从人居环境、农业产业、休闲旅游 3个系统，规划和实施2个层面总结精品线实践经验，为美丽 乡村精品线的建设提供参考和借鉴。     

Agent-based modeling of the word-of-mouth effect on promoting brand-name agricultural products

Developing brand agricultural products (BAPs) has become a strategic choice for consumption upgrading and agricultural modernization in China. As a powerful marketing method, word-of-mouth (WOM) is rarely applied to BAPs. Based on the particularity of the agricultural environment and products in China, this paper focuses on the WOM behavior of consumers regarding BAPs. An agent-based simulation model was designed, including attitude and motivation functions. The former determines consumers’ attitudes toward BAPs, whereas the latter determines whether consumers will spread information by WOM. The model was validated, and some parameters were measured through a survey of Beijing consumers. Then, experiments were conducted to simulate the evolution process of consumers’ attitudes and willingness to engage in WOM and the influence of consumer heterogeneity on WOM spreading. Exploratory findings mainly show that (1) only when the strength of WOM marketing reaches a certain degree can it affect consumer attitudes toward BAPs, (2) in the early stage of WOM spreading, the greater the strength of economic stimulation to consumers, the greater the rate of WOM communication, and (3) the higher the education level of the target group of WOM marketing, the higher the efficiency of WOM communication.