施工场地选取方案优化论证

以霍州发电厂为例,介绍了火力发电厂在施工期间应如何对施工场地进行合理布置及对施工工序进行合理组织。     

赵庄坑口电厂加压泵站方案比选

根据地形、地质、水力、施工、经济、运行管理等条件,对山西省赵庄坑口电厂中村水库3个取水口的位置进行了比较,初选水库内取水位置为坝上游左岸200m的凹弯处,从技术经济和运行管理等方面对一级加压泵站和二级加压泵站进行了对比分析,得出推荐采用一级加压泵站方案的结论。     

加压过滤机在晋阳选煤厂的应用实践

叙述了真空过滤机的工作原理及其在晋阳选煤厂的使用情况,探讨了用加压过滤机替代原有真空过滤机的必要性与可行性。     

石塘水电站2号机组一次调频试验

本文介绍了石塘水电站2号机组一次调频试验方法,测试了2号机调速器静态特性和一次调频动态响应特性,获取了一次调频相关技术数据,确定了2号机组一次调频功能的最佳实现方式,保证一次调频功能可靠投入,达到了满足电网的电能质量及频率控制水平的目的。     

基于改进粒子群算法的水电站中长期优化调度的研究

在运用粒子群优化算法求解水电站中长期优化调度问题时,针对粒子群优化算法存在的问题,采用了一种新的改进算法[1],该算法不仅增强了粒子群的全局搜索能力,同时有效避免了算法“早熟”,为水电站中长期优化调度提供了一种有效的解决方法.     

植物生物学教学的探索与实践

为提高植物生物学的教学质量,培养学生创新思维,文章从教材的选择、教学内容、教学方法和手段、实践环节和成绩评定等方面对植物生物学课程的教学进行改革和探索,并对课程改革的实践经验进行了总结。     

万宁加井岛植被调查与研究

通过对万宁加井岛植被调查,记录到该岛屿分布的维管植物有47科96属103种,并结合该岛的自然条件状况,提出植物资源保护及开发利用合理建议.     

Molecular hydrogen isotope analysis of living and fossil plants—Metasequoia as an example

Molecular hydrogen isotope analysis preformed on modern and fossil plants has made a significant impact on diverse research fields in biology and geology. Using living and fossil Metasequoia as an example, we review the technology of online GC-IRMS that made the molecular analysis of hydrogen isotope possible and discuss critical issues concerning with the studies of molecular dD and its applications. The apparent hydrogen fractionation factors between lipid molecules and source water (ewater–lipid) vary across plant taxonomy and differ among biomolecules and are affected by multiple environmental factors in which precipitation dD values exercise the first order of control. Eco-physiological factors and environmental parameters are also known to influence dD in plants. Molecular hydrogen isotope analysis of chemically stable lipid molecules, such as n-alkanes, finds a wide range of applications in detecting source sediments, reconstruction of paleoclimatic parameters, inference of air-mass trajectory, as well as in petroleum industry and environmental studies.     

Evolution of plant reproduction: From fusion and dispersal to interaction and communication

Based on the existing data concerning the evolution of the sexual reproduction, it is argued that the processes of sex differentiation and interactions play a key role in evolution. From the beginning environment and organism are unified. In a changing dynamic environment life originates and the interaction between life and environment develops from simple to more complex organisms. Sexual reproduction is introduced after the origin of meiosis and is a key process in evolution. The asexual reproduction process prepares to dispersal. Sexual reproduction process adds the genome renewal and the gamete-gamete interaction. Reproduction and dispersal are connected and the process of reproduction has similarities between asexual and sexual reproduction. Unicellular algae develop the physiological and morphological sex differentiation. Sex differentiation is connected with the way of dispersal. The step to multicellular plants introduces cell isolation after meiosis and by the stay on the mother plant within a cell or organ, plant-cell apoplastic interaction originates and by prolonged stay the plant-plant interaction. This stay influences the type of dispersal. A life cycle with alternation of generations and two moments of dispersal permits plants to go on land. In ferns a shift in the moment of sex differentiation to meiospore happens and the stay of the macrospore leads to the seed plants. In water all types of sexual reproduction, interactions and the alternation of generations are prepared and these are used to conquest land. On land the biotic dispersal is realized. The phylogeny of sexual reproduction reveals that the sex differentiation and interaction are the main causes in the evolution of sexual reproduction. Sexual reproduction shows interactions during gamete fusion, between organism and environment and in multicellular plants between organisms. With respect to other types of interaction as in symbiosis or the nutrient chain, interaction is considered as an important action which is based on a persisting cooperation and points to a push during evolution. The push is expressed as communication： the driving force in the evolution. Based on the interactions between organisms and interactions between organisms and the dynamic environment, communication is considered as a driving force leading to the evolution as explained in the development of plant reproduction. Consequences for reproduction, its regulation and the process of evolution are discussed.     

药用植物生理生态学课程建设与创新

从我校药用植物生理生态学课程建设与创新实践出发,预先编订教学纲要,合理进行教学手段的革新,利用新编教材、实验提纲、多媒体课件和网络技术等多种现代化教学手段,充分发挥学校多学科交叉的教学科研优势,紧密结合植物生理生态学已有的教研成果,使生物与制药专业学生能够真正掌握药用植物资源及其开发所需基础知识和全面提高制药专业技能。