共查询到20条相似文献,搜索用时 46 毫秒
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《中国细胞生物学学报》2020,(5)
为了促进学生自主学习能力的发展,提高教学质量,达到人才培养目标,"细胞与分子生物学实验"在全课程中采用了翻转课堂的教学模式。教师在课前引导预习,课中引导讨论,结合多样化评价方式,运用心理学量表测评翻转课堂的运用效果。结果显示,翻转课堂教学可使学生的自主学习能力显著提高,学习目标更明确,学习习惯得到改善,动手能力更强,从而全面提升了实验教学效果和学生素质。 相似文献
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翻转课堂是指学生在课前通过自主学习完成知识的获取,在课堂则通过师生互动和小组讨论完成知识内化的一种教学模式。该模式由于能有效调动学生学习兴趣和积极性而受到广泛关注。该教研室以"动物细胞原代培养"实验为研究对象,以激发学生学习动力和培养创新能力为目的,对翻转课堂教学模式设计进行了连续三年的探索和改进,提高了学生的科学素养。 相似文献
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本研究以提升医学专业学生的自主学习能力为目标,将"翻转课堂和对分课堂"两种教学模式相结合,并运用于人体解剖学教学中,可以使学生在课后,通过教学视频、音频、电子教材等数字电子资料补充学习,来提高自主选择学习的能力,增加课堂中生生及师生互动时间,以解决学生学习基础层次不齐、讨论时间不够等问题,最终提高课堂讨论的实效性,实现学生的个性化发展。 相似文献
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目的 探讨翻转课堂融合多个教学平台在局部解剖学教学中的应用效果。方法 选取2019级全科医学专业53名学生进行教学改革,随机分为教改组26名和对照组27名。教改组采用翻转课堂融合多个教学平台教学方式进行教学,对照组采用传统教学方式,比较两组学生平时成绩、标本考核、期考成绩以及期评成绩,并发放调查问卷以了解学生对参加本次教学改革的反馈。结果 两组学生期考成绩、平时成绩、期评成绩比较,差异均无统计学意义(均P>0.05);而两组的标本考核成绩比较,差异有统计学意义(P<0.05)。调查问卷统计结果显示,两组学生在合理安排投入学习时间和培养理论联系临床能力上并无显著性差异(均P>0.05),而教改组所实施的教学模式可以激发学生学习热情和兴趣、提高学生语言表达能力、提高学习主动性及自主学习能力、提升交流沟通能力和团队合作能力(均P<0.05)。结论 在局部解剖学教学中运用翻转课堂融合多个教学平台的教学模式,可提升学生的综合素质,有助于学生掌握解剖结构。 相似文献
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线上线下混合式教学模式在中医院校“医学微生物学”教学中的探索与实践 总被引:2,自引:2,他引:0
在分析中医院校"医学微生物学"课程性质以及当前理论教学中存在的突出问题的基础上,以"超星学习通"网络教学平台作为依托,构建线上线下相结合的"三环一体,双边互动"混合式教学模式。设计了学生自主学习、生生自由讨论、师生互动教学等活动,把课前、课中和课后3个学习环节融为一体,师生全程交流互动。通过比较法研究了混合式学习对教学效果的影响,初步教学实践表明,相比传统教学,该教学模式提高了学生的课堂参与度、学习成绩和自主学习积极性,更有利于学生对知识的理解和掌握。因此,在中医院校"医学微生物学"课程中,混合式教学是值得深度研究和推广的教学模式。 相似文献
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Recent advances in the study of Kaposi's sarcoma-associated herpesvirus replication and pathogenesis
It has now been over twenty years since a novel herpesviral genome was identified in Kaposi's sarcoma biopsies. Since then, the cumulative research effort by molecular biologists, virologists, clinicians, and epidemiologists alike has led to the extensive characterization of this tumor virus, Kaposi's sarcoma-associated herpesvirus(KSHV; also known as human herpesvirus 8(HHV-8)), and its associated diseases. Here we review the current knowledge of KSHV biology and pathogenesis, with a particular emphasis on new and exciting advances in the field of epigenetics. We also discuss the development and practicality of various cell culture and animal model systems to study KSHV replication and pathogenesis. 相似文献
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RICHARD E. NORRIS 《Botanical journal of the Linnean Society. Linnean Society of London》1991,106(1):1-40
Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera. 相似文献
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JOAN VALUÈS MONTSERRAT TORRELL NÚRIA GARCIA JACAS 《Botanical journal of the Linnean Society. Linnean Society of London》2001,137(4):399-407
Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted. 相似文献
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肝癌中HBV和HCV基因和抗原的分布及意义 总被引:1,自引:0,他引:1
采用原位分子杂交方法检测HCV
RNA及HBV X基因;采用免疫组织化学方法研究HCV核心抗原,非结构区C33c抗原及HBxAg在肝细胞肝癌中的定位及分布.结果表明(1)HCV
RNA、HBV X基因在肝细胞肝癌组织检出率分别为40%(55/136)和82%(112/136).HCV
RNA定位于癌细胞的胞浆内,阳性细胞呈散在、灶状及弥漫分布三种形式;HBV
X基因在肝癌细胞中的分布呈胞浆型、核型及核浆型,阳性细胞也呈上述三种分布形式;(2)HCV
C33c抗原、核心抗原在肝细胞肝癌中的阳性率为81%(133/164)及86%(141/164).C33c抗原定位于癌细胞及肝细胞的胞浆内;核心抗原既定位于癌细胞核中,又可定位于胞浆中.C33c抗原阳性细胞以灶状分布为主;而核心抗原阳性细 相似文献
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H.-R. GREGORIUS 《Biological journal of the Linnean Society. Linnean Society of London》1984,23(2-3):157-165
For a plant selection model with frequency-independent viabilities, fertilities and selfing rates, it is shown that apart from global fixation, for certain parameter combinations a protected polymorphism and facultative fixation (either allele may become fixed according to initial frequencies) may both occur. Facultative fixation requires different selling rates for the dominant and recessive type. Protection of the polymorphism requires resource allocation for male and female function. In this connection the problem of purely genetically caused population extinction is discussed.
For general frequency dependence and regular segregation, the chances for establishment of a completely recessive gene are compared to those of a completely dominant gene. It is proven that the process of establishment of the recessive gene, despite a fitness advantage, may be considerably endangered by drift effects if random mating prevails. The recessive gene may reach the same effectivity in establishment as a dominant gene, only if the recessive homozygote mates exclusively with its own type during the period of establishment. 相似文献
For general frequency dependence and regular segregation, the chances for establishment of a completely recessive gene are compared to those of a completely dominant gene. It is proven that the process of establishment of the recessive gene, despite a fitness advantage, may be considerably endangered by drift effects if random mating prevails. The recessive gene may reach the same effectivity in establishment as a dominant gene, only if the recessive homozygote mates exclusively with its own type during the period of establishment. 相似文献