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几种药用植物基因组DNA提取方法研究 总被引:3,自引:0,他引:3
采用改良2×CTAB法和改良SDS法提取富含多糖和次生代谢物质的几种药用植物不同器官基因组DNA,并用紫外分光光度计分析,凝胶电泳和PCR扩增进行鉴定。结果表明:改良2×CTAB法和改良SDS法均能有效去除不同药用植物材料中的蛋白质、多糖、酚类及其他次生代谢物质,获得较高质量基因组DNA。但与改良SDS法相比,改良2×CTAB法提取的基因组DNA质量更好。 相似文献
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Don C Charles 《Contemporary educational psychology》1976,1(1):76-88
A historical review of educational psychology might improve understanding of current status and problems. Before American development of the field, the Greeks, Juan Vives in the 16th century, and Pestalozzi and Herbart in the 19th century applied psychological views to educational problems. Despite the absence of scientific psychology in 19th century America, normal schools offered courses purporting to be psychological in content; these courses were supported by textbooks on the subject. James began, and Thorndike developed, the discipline that by the mid-1920s had assumed much of its current form. Journals and academic departments appeared in the first quarter of the century also. The continuing search through the middle of the century for a satisfying professional organization reflected educational psychology's difficulties in establishing an identity. It is not clear even today that the field has “crystallized,” as one writer described it in the 1920s. 相似文献
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In contemporary African societies where multiple systems of knowledge coexist, and the use of informatics is becoming increasingly widespread, conventional perspectives drawn from cultural anthropology, environmentalism, development studies and intellectual property rights are insufficient guides to thinking about the digitization of indigenous knowledge. Taking an interdisciplinary approach, three moments in South African knowledge dynamics are used to probe some of the ontological, epistemological, and performative implications of science/IKS interaction in the design and construction of archives and databases of local plants. Twenty-first century databases of indigenous African medico-botanical knowledge need to assure that it is recontextualized historically and socially; that its multiplicity, visuality, and orality are retained; and that “articulation work” is done to make sure that design choices and use are cognitively just. 相似文献
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宜宾地处四川盆地南缘,金沙江、岷江和长江三江汇流地带,以中低山地和丘陵为主要地貌,气候温和多雨,植物资源丰富。得天独厚的地理条件,对蕨类植物生长十分有利。本文通过资料查询、实地考察等调查研究方法,初步总结确定宜宾市野生药用蕨类植物35科,52属,107种。为国内外专家研究宜宾的野生药用植物提供了相关资料。 相似文献
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试论鲁迅小说《药》对辛亥革命的描写——兼谈夏瑜形象的社会意义 总被引:1,自引:0,他引:1
周健 《大连教育学院学报》2004,20(3):56-58
鲁迅在小说《药》中,深刻而又全面地描写了辛亥革命,并全方位、多侧面地以革命者夏瑜的悲剧命运揭示出民众与革命和革命党人的隔阂及民众的愚昧这个深刻的社会问题,使得夏瑜这一形象蕴含了深邃的社会意义。 相似文献
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植物学是生命科学中主要的基础分支学科之一,其研究对象主要是绿色植物,以阐明植物界所有生命现象和过程的客观规律为宗旨。进而为相关学科提供翔实丰富的知识理论,旨在推动关系人类生存与健康等诸多领域的健康发展。然而由于植物学教学内容繁多、知识抽象、涉及面广以及具有极强的实践性等特点,增加了学生的学习难度。同时,在新的教育发展形势下,高校课程改革也在不断推进,新课程的增设,对原有的植物学课时形成很大挤占。在此情况下,如若植物学教学仍然采用传统单一的教学模式与方法,显然已经很难适应现代社会的发展要求。为此,笔者近年来一直致力于植物学教学方法研究与探讨,通过多种教学方法的运用,旨在进一步提升植物学教学质量,推动植物学教学的不断发展。 相似文献
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探讨PBL结合野外实践教学法在药用植物学中的可行性以及对教学效果的影响。将W大学2016级72名药学专业学生其中的36人分成6组,每组6人,分别进行PBL教学方法和野外实践相结合的教学,另外36名学生进行传统教学,对比分析教学成效。PBL教学模式结合野外实践应用于药用植物学的教学法教学效果显著,不但锻炼了学生独立学习和全面考虑问题的能力,而且提高了实践技能和心理机能。 相似文献
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立足新疆农业大学药学专业特色,将思政教育与药学专业知识融合汇通,开展课程思政教学改革探索。以"药用植物学"课程为专业背景和载体,针对传统课程思政案例教学,取其精华,改进普通授课方法及案例教学方案,建立程思政案例库并实施新模式,将其贯穿于整个药用植物学授课过程中,为实现应用型药学专业人才培养目标提供参考。 相似文献
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