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基于认知心理学理论,结合建构主义的优势,对传统的分子生物学的教学模式进行改革和探索。由于分子生物学课程体系庞大,知识点繁多且抽象,易使学生对其产生厌倦感,影响学习兴趣。我们通过在教学改革实践中依据课程内容特点,随机选择试点班级进行构建主义教学模式探索,教师采用引导学生进入课程主体,培养学生的主动参与自我构建,增强学生的综合素质的教学模式,使得实验班与对照班相比,在分子生物学的期末考试成绩上有显著提高(P<0.05)。因此,科学、合理的分子生物学教学体系,对培养适应现代生命科学技术发展需求、适应市场发展需要的生物技术创新人才具有重要意义,值得应用和大力推广。 相似文献
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汪洋 《浙江大学学报(A卷英文版)》2004,5(8)
The chemisorption properties of N18O adsorption on TiO2(110) surface were investigated by experimental and theoretical methods. The results of temperature programmed desorption (TPD) indicated that the temperatures of the three desorption peaks of the main N2 molecules were at (low) temperature of 230 K, 450 K, and (high) temperature of 980 K. This meant that N18O decomposed and recombined during the process of N2 desorption after N18O was exposed. Analysis of the stable combination and orbital theory calculation of the surface reaction of NO adsorption on the TiO2(110) cluster model showed that there was clear preference for the Ti-NO orientation. 相似文献
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赤霉素是一类植物内源激素,影响植物的生长和发育.“绿色革命”使一年生作物的产量大幅度提高,人们因此认识到赤霉素在生产中的巨大作用,也使赤霉素的研究得到进一步的加强.随着分子生物学的发展,赤霉素生物合成途径中的基因在拟南芥、烟草、水稻等植物中被逐渐克隆出来.文章介绍了赤霉素的生物合成途径在拟南芥、南瓜等作物中的研究情况以及一些矮化突变体,着重概述了苹果中赤霉素生物合成途径的研究进展,为苹果矮化的分子育种提供理论支持. 相似文献
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为弄清引起云南、贵州和四川3省常春藤炭疽病的病原菌种类,采用单胞分离法对引起3省炭疽病的常春藤病原进行了分离。通过显微形态特征和ITS分子系统学研究表明,常春藤炭疽病病原为常春藤炭疽菌(Colletotrichum trichellum(Fr.)Duke)。 相似文献
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在文中,发展了纠缠轨线动力学的一般形式。轨线的运动形式适用于一般的势能系统。使用这种改进的轨线动力学方法计算了一个模型势(三次多项势)的反应几率,所得出的结果与精确的量子计算结果符合的非常好。 相似文献
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Fatin Hazwani Fauzi Nurul Izzati Hamzan Nurhayu Ab Rahman Siti Suraiya Suharni Mohamad 《Journal of Zhejiang University. Science. B》2020,21(12):961
Worldwide there has been a significant increase in the incidence of oropharyngeal squamous cell carcinoma (OPSCC) etiologically attributed to oncogenic human papillomavirus (HPV). Reliable and accurate identification and detection tools are important as the incidence of HPV-related cancer is on the rise. Several HPV detection methods for OPSCC have been developed and each has its own advantages and disadvantages in regard to sensitivity, specificity, and technical difficulty. This review summarizes our current knowledge of molecular methods for detecting HPV in OPSCC, including HPV DNA/RNA polymerase chain reaction (PCR), loop-mediated isothermal amplification (LAMP), p16 immunohistochemistry (IHC), and DNA/RNA in situ hybridization (ISH) assays. This summary may facilitate the selection of a suitable method for detecting HPV infection, and therefore may help in the early diagnosis of HPV-related carcinoma to reduce its mortality, incidence, and morbidity. 相似文献
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Exercise can enhance motivation to change lifestyle behaviors, improve aerobic fitness, improve physical function, control fatigue, and enhance quality of life. Studies have demonstrated the benefits to be gained from physical exercise, highlighting the importance of popularizing the concept of physical exercise for individuals and making professional exercise-treatment programs available to patients with cancer. However, the correlation between physical exercise and carcinogenesis is easily overlooked, and exercise interventions are not routinely provided to patients with cancer, especially those with advanced cancer. In this article, we present a literature review of the effects of exercise on cancer development and progression and give recent evidence for the type of exercise best suited for different types of cancer and in different disease stages. Moreover, the molecular mechanisms about regulating metabolism and systemic immune function in cancer are summarized and discussed. In conclusion, physical exercise should be considered as an important intervention for preventing and treating cancer and its complications. 相似文献