Yimu San improves obstetric ability of pregnant mice by increasing serum oxytocin levels and connexin 43 expression in uterine smooth muscle

Prolonged farrowing remains one of the critical challenges in intensive pig farming. This study aims to explore the effects and mechanism of Yimu San (YMS), a Chinese veterinary medicine micro mist, on delivery ability with mouse models. Thirty-two pregnant mice were randomly divided into a control group and low-YMS, med-YMS, and high-YMS groups. The labor process time and stillbirth rate were recorded, the levels of serum oxytocin and prostaglandin E₂ (PGE₂) were measured with enzyme-linked immunosorbent assay (ELISA). Contractility measurements of the isolated uterus and the expression of connexin 43 (Cx43) in uterine smooth muscle were evaluated. The results showed that compared with the control group, the birth process time and stillbirth rate in the med-YMS and high-YMS groups were remarkably lower. The in vitro uterine contractions, levels of oxytocin, PGE₂, and Cx43 in the med-YMS and high-YMS groups were significantly higher than those in the control group. The differences of the above measurements between the low-YMS group and the control group were not obvious. It can be speculated that YMS could significantly promote labor in pregnant mice by enhancing the levels of oxytocin, Cx43, and PGE₂.     

分析化学实验教学改革之浅见

分析化学是一门实践性很强的科学.通过分析化学实验课程的教学,可以使学生对分析化学基础理论加深理解,熟练地掌握分析化学的基础操作技能,培养学生分析问题、解决问题的能力,构建知识与技能,探究科学能力和创新能力.因此,分析化学实验教学成果的好坏与否直接关系到学生学习专业课的质量.     

基于平衡记分卡法的绿色供应链绩效模糊评价模型

通过对绿色供应链内涵的分析,结合传统供应链绩效评价的指标体系和平衡记分卡法的四个维度,对绿色供应链绩效进行指标设计,运用模糊数学工具和层次分析法建立绿色供应链绩效评价模型,并进行量化处理。     

陕西省中等职业教育发展状况调查

本文通过对陕西省中职教育资源状况和对2005届陕西省初中毕业生报考意愿的抽样调查分析。认为根据教育部要求，陕西省中职扩招任务是可以完成的，但仍需克服相当大的困难。     

Teachers’ beliefs of behaviors,learning, and teaching related to minority students: a comparison of Han and Mongolian Chinese teachers

Teachers from mainstream and minority backgrounds teaching in the same school contexts presumably hold different beliefs of learning and teaching about minority students due to their unique prior life and ethnic experiences. Teachers in similar school environments are also assumed to share beliefs of teaching and learning about their students because of the influences of their similar school contexts despite their different prior life and ethnic experiences. This study examines the two contentious assumptions by surveying the beliefs of behavior, learning, and teaching that the mainstream Han and minority Mongolian Chinese teachers in the same school contexts hold about their Mongolian Chinese students. It found that the two groups agreed that teachers’ inadequate planning and management were the major sources of their students’ behavior problems while students’ home backgrounds, abilities, and efforts explained their learning failure or success. Both believed that students’ emotional and social problems were more important than their learning problems for them to attend to, and their expertise in helping students develop self-worth was more important than their expertise in curriculum and pedagogy. Both preferred to vary teaching standards, content, and methods to accommodate students’ differences and offer opportunities for students to discover things themselves.     

云南的旅游与财源

云南具有得天独厚的旅游资源，其优美的自然风光、四季如春的气候及丰富多彩的人文景观，吸引了大量的中外游客到云南旅游观光，给云南带来了滚滚财源，云南旅游业收入在GDP的比重逐渐上升，旅游业日益成为云南的支柱产业，旅游经济成为云南的重要财源。拟对云南的旅游经济与云南的财源作些分析和研究。     

Effect of Flow Directions on Multiphase Flow Boiling Heat Transfer Enhanced by Suspending Particles in a Circulating Evaporation System

A circulating fluidized bed evaporator(including down-flow, horizontal, and up-flow beds) was constructed to study the effect of flow directions on multiphase flow boiling heat transfer. A range of experimental investigations were carried out by varying amount of added particles(0-2%), circulation flow rate(2.15-5.16 m~3/h) and heat flux(8-16 kW/m~2). The comparison of heat transfer performance in different vertical heights of the horizontal bed was also discussed. Results reveal that the glass bead particle can enhance heat transfer compared with vapor-liquid two-phase flow for all beds. At a low heat flux(q = 8 kW/m), the heat-transfer-enhancing factor of the horizontal bed is obviously greater than those of the up-flow and down-flow beds. With the increase in the amount of added particles, the heat-transfer-enhancing factors of the up-flow and down-flow beds increase, whereas that of the horizontal bed initially increases and then decreases. However, at a high heat flux(q=16 kW/m), the heat-transfer-enhancing factors of the three beds show an increasing tendency with the increase in the amount of added particles and become closer than those at a low heat flux. For all beds, the heat-transfer-enhancing factor generally increases with the circulation flow rate but decreases with the increase in heat flux.     

关于高师大学生就业能力及其培养缺陷的思考

高师大学生的就业问题值得关注,要解决其就业,关键是提高其就业能力。高师大学生的就业能力主体现在具有良好的思想素质、较高的化修养、较强的业务能力、良好的身体和心理素质、先进的教育理念、科学的就业观和良好的自我监控能力。要培养其就业能力,应突出改变现行高师教育中的缺陷,构建适应未来教师需要的知识结构和教学技能;倡导和支持学生参加教育科学研究;重视师德教育中存在的问题,并突出职业价值观和教育成功期望的培养。     

文献检索课教学课堂上的"三十六计"(连载三)

五、如何维持课堂纪律 第二十二计:防患未然 [提要]教师在课前、课上采取各种方式集中学生注意力,防止破坏课堂秩序的现象发生.     

公共体育场馆服务外包风险识别与规避机制研究

摘要：公共体育场馆服务外包是改革的趋势之一,构建服务外包风险识别与规避机制有利于减少相关风险。采用专家访谈和问卷调查法,在调查公共体育场馆服务外包项目状况的基础上,识别服务外包过程中的风险,进而构建服务外包的规避机制,研究认为：公共体育场馆服务外包项目主要有保洁、安保、绿化、设施的管理与维护等,基本上停留在日常管理业务服务外包上,而咨询、策划等高端服务项目外包还处在待开发阶段;公共体育场馆服务外包存在着有限理性风险、外包关系潜在锁定风险、逆向选择风险、道德风险、腐败风险、外包关系协调六大风险;通过建立合理的接包商选择机制、监督机制、激励机制、质量考评机制、自我保护机制、合同的弹性机制、人才培养与引进机制、“关系”管理机制八大机制对场馆的服务外包的风险进行规避。为公共体育场馆服务外包提供理论与实践依据。