裂叶牵牛花色变异株后代的表型分析

以花色变异的裂叶牵牛的15株自交后代为材料,对其植物学性状、花冠性状、花粉育性、花粉纹饰及结实性进行了表型分析。结果表明：15株后代植株生长较慢,藤蔓右旋、节间变短、攀缘能力差;每叶腋间着生1个花蕾,偶有2个同时着生。15株观察后代都开有蓝色和蓝白相间的花冠,在400多朵蓝白相间的牵牛花中,没有完全相同的花纹。在蓝自相间的花朵中有部分雄蕊出现瓣化现象,花粉观察表明雄蕊瓣化的花粉育性严重下降。蒴果和种子调查表明,雌蕊的育性并未降低,但电镜扫描观察发现,两者的表面性状(如纹饰)无差异,这种现象有待进一步研究。     

东北林业大学重点课程“生产计划与控制”建设研究

“生产计划与控制”是东北林业大学工业工程专业的主干课程之一.本课程的建设强调在社会主义经济环境下将理论与实践相结合,针对性、实用性强.本文结合生产计划与控制教学实践,从生产计划与控制课程建设目标、教学体系改革、师资队伍建设和课程网站建设等方面对生产计划与控制课程建设进行全面的研究和探讨.逐步实现课程的整体优化,力图使教育发挥全面效应.     

渔业科学数据智能RSS阅读器的设计研究

针对传统RSS阅读器在实际应用中接收大量冗余信息的问题,提出一种智能化的RSS阅读器。该阅读器基于渔业科学数据平台,采用向量空间模型,运用中文分词、对象持久化等技术实现智能原理,设计实现了智能化RSS阅读器。实验证明：该阅读器的过滤有效性为86.2%,过滤准确性为82.4%,能够较好地过滤掉与用户不相关的信息。应用结果表明：渔业科学数据智能RSS阅读器的实现可使用户获得更精准的信息。     

酵母铬对围产后期奶牛抗氧化能力的影响

选用20头胎次相近和分娩期相近的中国荷斯坦奶牛,随机分为4组,对照组为基础日粮,3个处理组在基础日粮中分别添加3．0、6．0和9．0g／a的酵母铬。试验期为2周,从分娩当天持续到产后14d。结果表明,（1）与对照组相比,添加酵母铬可以提高血清中总抗氧化能力（T—AOC）,超氧化物歧化酶（SOD）和谷胱苷肽过氧化物酶（GSHPx）的活力（P〈0．01）,降低丙二醛的浓度;（2）酵母铬降低了皮质醇含量,提高了胰岛素活性。本试验条件下,发现基础日粮添加9．0g／d的酵母铬,使铬添加水平为0．8mgCr／kg时,效果较好。为研究在日粮中添加不同水平的酵母铬对围产后期奶牛抗氧化性能的影响提供依据。     

Recent Advances in Molecular Biological Applications in Sri Lankan Tea （Camellia sinensis） Industry： An Overview on the Achievements During Last Ten Years

For tea,which is predominantly out-breeding woody perennial,genetic improvement through conventional approaches is relatively ineffective,slow and costly.As a potential tool to enhance the process,Tea Research Institute of Sri Lanka （TRISL） has integrated molecular biology to supplement the conventional program and is in progress.To date,a considerable progress has been achieved in the key areas such as genetic characterization and estimation of genetic diversity,isolation and characterization of EST and genomic SSRs,construction of SSR primers,construction of genetic maps and marker assisted selection and application of genomic approaches to understand the role of secondary metabolites disease resistance in tea and in this paper,a summarized version of above studies is presented.     

Tea Art Education for Elementary School Students in Hangzhou City of Zhejiang Province in China——A Case of Caihe Second Elementary School

Caihe Second Elementary School,a public school in Hangzhou city of Zhejiang province in China,has shown excellent performance at practicing tea art education for students as a part of after-school activities it encourages.In this paper,the author figured out significance of tea art in Chinese society by discussing ＂why elementary students learn Chinese tea art＂ through observation on tea art education at Caihe Second Elementary School and interview with persons involved.     

Discussion and Evaluation of How ＂Tea Culture＂ is Defined

The essence of tea culture stems from the meeting of tea＇s inherent morality,its roots in nature,and human cultural activity.Because it is intertwined with traditional philosophy,Chinese tea culture is well-established and flourishing.The definitions and delineations of tea culture are varied,but any definition should reflect tea culture＇s relativity in space and time and human-centered nature,especially the spiritual needs of humans.