组织文化与团队学习方式的关系研究

在借鉴前人的研究基础上,主要研究官僚型,支撑型和创新型文化对于不同类型的团队学习方式的影响,以加强对于团队学习方式的理解,为更好更有效地进行团队学习提供理论指导。     

湖南省普通高校体育弱势学生体育活动现状调查研究

采用文献资料、问卷调查等研究方法对湖南省普通高校体育弱势学生参与体育活动的现状及其影响因素进行分析与研究,在此基础上探讨其发展对策,旨在为高校体育教学的全面发展提供参考。     

国内外中小学教研组活动有效性研究文献综述

通过查阅文献并作相关比较分析,综合阐述国内外中小学教研组活动有效性研究的历史与现状,为以后的研究者确立继续研究的起点。     

关于语用与动态语义生成问题的思考

静态语义和动态语义是语言体系中两个性质相互对立的语义集合。语境因素对语言的影响和制约是动态语义生成的必要条件。语言表达的思想和意义是同一载体的两个语义层次。语言的逻辑结构和语法结构的关系,意义寓于逻辑结构之中,对逻辑的结构的分析旨在揭示隐性的语义成分,并对其客观的真实性作逻辑的指证。语言的创新决定于心的功能,即指人对事物的观察和体验以及思维的能力。     

高校图书馆阅读推广活动的整体策划与落实——以长沙理工大学图书馆为例

阅读指导是高校图书馆服务工作的重要组成部分。多年来,长沙理工大学以"读者活动月"、"潭州夜话"、"三湘读书月"、"读书周末"等活动为基本载体,坚持日常阅读推广、定期阅读推广、集中阅读推广三种形式并举,充分发挥"读者协会"在校园阅读活动中的主体作用,努力推动校园的阅读活动,取得了一定的成效,"读者活动月"被评为校园文化精品项目,学校也因此被评为湖南省首届"书香校园"。     

地理实践活动成绩评定设计初探

地理实践活动是培养学生的实践能力 ,团结协作和社会交往能力及创新精神的有效途径 ,地理实践活动成绩评定是学生成绩评定必不可少的一部分。如何对实践活动成绩进行科学合理的评定 ,这是摆在教师面前的一个难题。本文在占有大量资料的基础上 ,设计了地理实践活动成绩评定的三个步骤 ,即评定的组成因素、评定流程、调整和修改等方面 ,并列举了丰富的案例 ,对地理教师开展实践活动评定有参考价值和指导作用。     

The Integrated Approach to Teaching Visual Art in After‐School Activity Classes

The present article discusses the possibilities of interdisciplinary integration for teaching art to primary‐school students in after‐school activities. Integrated teaching, as one of the ways for putting into practice the socioconstructivist approach to learning and the theory of the guided construction of knowledge, is used as a basis for conceiving and implementing the two projects described in the empirical part of the article. The research questions, addressed here, aim at finding out how a project‐based approach and the knowledge gained in school and through the students’ individual experiences can be applied pedagogically in after‐school art activities. To achieve the aims of the study a two‐cycle action research was conducted where the integrated teaching was viewed as a developmental spiral, in which the insights, experiences and results gained from the first project fed into the planning and realisation of the second one. The outcomes of the two projects suggest that the integrated presentation of teaching material enhances the students’ learning abilities to make associative connections between the different subjects, to transfer their skills from one project into another, and to apply their knowledge from one subject area to another by processing various sources of visual or verbal information in their creation of artworks. The two projects have proven empirically the validity and educational relevance of the integrated approach to teaching art, and the usefulness of the ideas in the New Finnish Core Curriculum for the holistic development of the child in the complexity of today's world.     

思维导图在医学生理学“肾小球滤过”教学中的应用探究

医学生理学是当代医学的重要基础课。为了解决生理学理论知识的理论性强,理解起来比较困难的问题,在生理学的教学中引入思维导图这一新兴教学方法。文章以“肾小球滤过”章节为例探讨如何将思维导图引入到生理学教学中,从而达到改善生理学的教学质量的目的。     

培养本科生普适能力的班级活动探析与实践——以大理大学药化学院为例

班级活动是培养本科生普适能力的重要载体,设计时应遵循指导性等四项原则。本文试图结合实际,在本科班级的每个阶段设计并组织实施了主题PPT演讲等特色活动。通过问卷调查发现,在活动形式、内容等五个方面存在问题,并提出解决措施,不断提高此类活动在培养普适能力方面的作用。     

Production of carotenoid sarcinaxanthin by Kocuria palustris isolated from Northeastern Brazil Caatinga soil and their antioxidant and photoprotective activities

BackgroundThis study aimed to produce carotenoids of two bacterial strains obtained and isolated from Caatinga soil in Northeastern Brazil and to evaluate their antioxidant and photoprotective activities. The morphological identification of bacteria was performed by Gram staining and molecularly confirmed through the 16S rRNA gene. The production of carotenoids was performed on two 2³ factorial designs to analyze the influence of independent variables (temperature range, luminosity, agitation, spiral presence, and bacterial isolate type) for maximum carotenoid yield. The selected condition has been transferred to a bioreactor (10L). The identification of carotenoids was performed by liquid chromatography (HPLC) and mass spectrometry (LC-MS). Antioxidant activity was determined by inhibiting the β-carotene/linoleic acid system and the effectiveness as sunscreen was measured through its sun protection factor (SPF).ResultsThe results revealed that the isolates FT-7.22 and FT-5.12 were identified as Kocuria palustris; producers of a rare C50 carotenoid sarcinaxanthin. This is the first report on the production of carotenoids by this species from the Caatinga Domain. The pigment that was obtained from the Tryptic Soy Broth (TSB) medium in the best conditions of the factorial designs (increased agitation, aeration, and light exposure) exhibited a significant increase in the carotenoid production. The isolated FT-7.22 reached a higher sarcinaxanthin concentration (112,480 μg/L), and it exhibited promising antioxidant (76.53 ± 0.09%) and photoprotective activities (SPF = 9.36 ± 0.52).ConclusionsThis study demonstrated the ability of K. palustris to produce carotenoid sarcinaxanthin with antioxidant and photoprotective activities so that it can be applied in cosmetic formulations.How to cite: Mendes-Silva TCD, Vidal EE, de Souza RFR, et al. Production of carotenoid sarcinaxanthin by Kocuria palustris isolated from Northeastern Brazil Caatinga soil and their antioxidant and photoprotective activities. Electron J Biotechnol 2021;53. https://doi.org/10.1016/j.ejbt.2021.05.004