双环蘑菇的遗传学特性及品种选育研究进展

Advances in research on Agaricus bitorquis mating and breeding systems,and the breeding of new strains of this mushroom both in China and overseas,have been reviewed.Progress in our understanding of the genetic basis of homokaryotic fruiting,nuclear migration and mitochondrial inheritance,has been presented.The three main groups of A.bitorquis strains (temperate,bridging and tropical) categorized on the basis of mating behavior,and the distribution of homogenic and heterogenic incompatibility within the groups,have been discussed.Existing problems have been identified,and proposals made for future research.     

阿魏侧耳多糖研究进展

阿魏侧耳是一种具有药用价值的名贵珍稀食用菌,具有"天然、营养、保健"于一体功能.现对阿魏侧耳的研究历史及阿魏侧耳多糖的药用价值进行综述.     

郁金香花期调控技术研究进展

该文简要介绍了郁金香花期调控的主要关键技术,总结近些年有关温度、光照和激素等调控郁金香花期的研究,阐明了郁金香花期调控技术研究的概况,并结合自身的研究实践,对郁金香花期调控研究存在的问题、未来的研究方向及其应用前景进行了展望。     

宁波郁家巷盛宅保护维修研究

遵守不改变文物原状的原则,遵守最大程度保护文物建筑的真实性、最低限度干预的原则,是对于文物建筑及其环境修缮的指导思想。在具体工程实际中对于不同的类型和问题的处理把握,需要深入地调查研究,详实的基础资料和丰富的专业知识、实践经验是作好修缮设计方案的基础。     

关于农业科研单位实行岗位设置管理制度的探索

实行岗位设置管理制度，建立起以按需设岗、竞聘上岗、按岗定酬、契约管理为主要特征的岗位管理体系，是农业科研单位深化人事制度改革的重要举措。本文从农业科研单位岗位设置特点、存在问题、原则思路和制度框架等方面进行分析和探讨。     

我国碳排放研究现状的文献计量分析

运用文献计量学方法考察1989~2010年公开发表在CNKI、维普和万方三大数据库的我国碳排放研究文献,较为系统地分析我国碳排放研究发文年度分布、期刊分布、高产作者及引文分布等问题,同时通过关键词统计分析,初步揭示出碳排放研究的新方向。     

野生植物扁蓄的坪用价值研究

对3种野生草本植物进行了坪用栽培,详细观察研究了3种植物的物候期表现、生长习性和绿化效果。试验表明:扁蓄极耐严寒,对干旱、水涝、高温等逆境适应性强,抗污染能力强,保持绿色时间长,发挥绿化功能快,不择土壤,种植管理方便,可作为园林草坪绿化的优良地被植物。     

运用信息资源培养小教本科生的科研能力

随着我国基础教育改革的不断深入,现有高师小教本科生的科研能力培养,远远不能适应基础教育改革与发展对小学教师专业化发展的培养要求。课题研究从信息资源与科研能力的内在联系入手,结合本校小教专业5个班级本科生的科研能力现状调查,重点阐述了学科馆员与专业教师相结合运用信息资源培养小教本科生科研能力的体会。     

关于我国花卉产业科研体系构建的探讨

我国花卉产业发展存在巨大空间,但同时面临激烈的国际竞争形势。提升花卉产业科研能力是确保花卉产业健康稳定发展的关键和根本战略。我国花卉产业科研体系存在历史短、投入不足、科研成果转化率低、花卉产业市场竞争力低等方面的问题,必须加强我国的花卉产业科研体系建设,从根本上解决我国花卉产业发展问题。     

In vitro metabolism of ovarian steroids by bovine whole blood and plasma

Experiments were conducted to evaluate the effects of time and temperature on the potential of bovine whole blood (WB) or plasma (PL) to metabolize the ovarian steroids progesterone, estradiol-17β and testosterone. During a radioimmunoassay study (Experiment 1), we observed a temperature and time-dependent reduction (P<0.001) of plasma progesterone concentrations in samples incubated as WB at 5, 15, 25, or 35C for up to 48 hr. Most notable was the observation that 27% of progesterone present in controls was lost when WB was incubated at 5C for 48 hr and a 17% reduction was observed when PL samples were incubated at 35C for 48 hr. Immunoreactive estradiol-17β concentrations (Experiment 2) in PL and WB incubates were not affected by time or temperature. However, immunoreactive testosterone concentrations increased more than 3-fold by 48 hr in WB incubates held at 35C. To examine the latter observation further, ³H-progesteone was incubated with WB at 35C, followed by extraction and thin-layer chromatography (Experiment 3). Results generally supported RIA findings and revealed the presence of significant 17α-hydroxylase, 17–20 lyase and aromatase activity. Heretofore this has not been considered to occur outside major steroid metabolizing organs.