基于集对分析的城市供水管网漏损预测及降漏研究

为了降低管网漏损水平,保障城市供水安全性和可靠性,以云南省某城市典型供水片区作为研究对象,运用集对分析漏损预测模型（SPA LF）,从供水管网漏点数和漏点率两个方面分析了不同管材漏损的实际情况,预测未来不同管材的漏损趋势。该研究能够提高供水企业主动检漏水平与供水安全可靠性,降低管网漏损率与供水成本。     

“宜家效应”对旅游体验项目设计的启示

活动项目是旅游体验创生的重要载体,因此设计旅游体验项目是旅游地开发的重要任务.“宜家效应”显示,投入劳动会产生依恋,消费者更加看重自己参与创意的产品.对这些产品,消费者至少要有30％的投入,才会把它视为己出而产生成就感和自豪感.旅游体验项目设计中应重视“宜家效应”,自觉运用蛋糕粉理论,遵循桑德拉平衡点原则,让游客参与其中、适当付出劳动、发挥创造潜能,以催生情感依恋、提高满意度.     

基本上成立的概念及其应用

主要讨论了基本上成立的一些概念,并给出与这些概念相关的一些性质,同时用基本上成立的概念简述一些定理和性质的叙述、证明及它们之间的关系.     

企业信息化环境下人-信息系统交互效率

针对制造业人-信息系统(H-IS)交互效率不高的问题,提出从任务-人-信息系统匹配的角度来优化交互效率,构建了人、任务、信息系统和交互环境匹配优度的概念模型.分析了任务与人、任务与信息系统、人与信息系统匹配对交互效率的影响机理,分析结果表明:任务与人的匹配、人与信息系统的匹配通过认知负荷、心理负荷影响人的认知效率和信息加工效率,进而影响人的自我效能感、焦虑程度和操作错误数;任务与信息系统的匹配通过员工的焦虑和信息系统功能的合理性要求影响人的情绪,进而影响人的觉醒水平和认知效率,最终影响人-信息系统交互效率.     

杜鹃花繁殖生物学研究进展

对杜鹃花孢粉学、繁育系统及传粉生物学方面的研究进展进行了分析,提出杜鹃花属植物繁殖生物学未来的研究可以主要从以下几个方面开展：（1）探讨杜鹃花属孢粉学线形结构的花粉呈现的进化意义;（2）在中国喜马拉雅地区,研究不同地点的相同物种和不同物种繁育系统,分析杜鹃花繁育系统多样性的相关因子,了解传粉系统及传粉昆虫的多样性,揭示杜鹃花属的传粉者特点;（3）选取合适的基因片段,重建杜鹃花属的系统,通过系统树找出可能是杂交起源的种类,纠正经典分类学在杜鹃花属系统位置构建方面的偏差;（4）对比不同杂交群体的繁殖生物学特性,找出传粉昆虫对不同亲本和杂交个体施加选择压力的差别,明确在物种的杂交形成过程中传粉昆虫对生殖隔离的选择作用。     

新时期实验室主任应注意的几个问题

实验室是培养高素质创新人才的重要场所，实验室主任对于实验室的建设与发展起着至关重要的作用。结合新时期高校实验室的特点，文章对实验室主任在实验教学创新、实验室管理等方面如何做好工作阐明了自己的观点。     

藏药哈巴乌头的化学成分研究

 对藏药哈巴乌头(Aconitum habaense)的化学成分进行研究.利用反复硅胶柱层析、重结晶等分离手段从中分离得到了8个化合物,通过现代波谱技术和理化常数测定鉴定了结构,其中5个为二萜生物碱,分别是粗茎乌碱甲(crassicauline,1)、查斯曼尼丁(chasmaconitine,2)、滇乌碱(yunaconitine,3)、印乌碱(indaconitine,4)、塔拉萨敏(talatizamine,5),同时还得到2个酚性类化合物和β-谷甾醇.以上化合物均为首次从该植物中分离得到.     

Neuroglobin mutation associated with hypoxia adaptation in Tibet chicken

Globin protein family plays an important role in storing and transporting oxygen. As a newly reported globin, the revealed function of neuroglobin includes binding and storing oxygen as well as facilitating the utilization of oxygen in neuronal cells. In the present study, mutations in exons of chicken Ngb gene were identified with the method of sequencing and created restriction site PCR in Tibet chicken and other four lowland chicken breeds. The mutations of Lys-2224(E4)-Asn and Ser-2279(E4)-Gly were identified in exon 4 of the gene. The Lys-2224(E4)-Asn mutation existed only in Tibet chicken and the mutation frequencies increased with increasing altitude. Analysis of the haplotype and diplotype of the two mutations in Tibet chicken populations of different altitudes showed that the frequencies of TG haplotype and TTGG diplotype also increased with increasing altitude, while the reverse tendency was found on GGAA diplotype. Under the hypoxic simulation incubation, the main haplotype was TG in living embryos and GA in dead embryos. The results showed that the Lys-2224(E4)-Asn mutation may be a specific mutation associated with hypoxia adaptation in Tibet chicken.     

Neuroglobin mutation associated with hypoxia adaptation in Tibet chicken

Globin protein family plays an important role in storing and transporting oxygen. As a newly reported globin, the revealed function of neuroglobin includes binding and storing oxygen as well as facilitating the utilization of oxygen in neuronal cells. In the present study, mutations in exons of chicken Ngb gene were identified with the method of sequencing and created restriction site PCR in Tibet chicken and other four lowland chicken breeds. The mutations of Lys-2224(E4)-Asn and Ser-2279(E4)-Gly were identified in exon 4 of the gene. The Lys-2224(E4)-Asn mutation existed only in Tibet chicken and the mutation frequencies increased with increasing altitude. Analysis of the haplotype and diplotype of the two mutations in Tibet chicken populations of different altitudes showed that the frequencies of TG haplotype and TTGG diplotype also increased with increasing altitude, while the reverse tendency was found on GGAA diplotype. Under the hypoxic simulation incubation, the main haplotype was TG in living embryos and GA in dead embryos. The results showed that the Lys-2224(E4)-Asn mutation may be a specific mutation associated with hypoxia adaptation in Tibet chicken.     

数据要素对区域绿色低碳发展的非线性影响研究

数字经济的崛起，使数据要素成为新的生产要素。实现碳达峰、碳中和是我国的重大战略需求。针对数据要素如何影响区域绿色低碳发展的问题，本研究基于数据要素理论框架，从数据供给、流通和应用3个维度设立指标体系，对区域数据要素综合发展水平进行测度及评价，并采用2013~2021年中国省级面板数据，实证分析了数据要素对区域绿色低碳发展的非线性影响效应，为数据要素更好赋能区域绿色低碳发展提供了政策建议。