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关键词： 胚胎干细胞   自我更新   PHB  

摘要： 文章简介染色质地貌和细胞代谢对细胞命运决定有着重要的作用,但人们对它们之间的相互作用却了解甚少。课题组运用基因组范围的si RNA筛选,发现PHB对于维持人胚胎干细胞的自我更新具有重要的作用。其

摘要： This article is concerned with the practice of bioethics outside of the Euro-American and Anglophone settings in which it was first formulated. In theoretical terms, the article considers the frictions that arise when global-scale projects such as bioethics are introduced into diverse social and cultural settings. Methodologically, the article is constructed around the biography of an Indian medical educator trained in bioethics and working to promote the subdiscipline in the Indian context. The article describes the situated practice of bioethics and highlights the incommensurability of some of its key terms and concepts when practiced outside of the global North.

标准号: GB/T 35520-2017

摘要： 本标准规定了化学品胚胎毒性胚胎干细胞试验的术语和定义、试验原理、试验方法、质星控制和结果评价。本标准适用于应用胚胎干细胞试验测试化学品的胚胎毒性。

关键词： 基因工程   现状   前景发展   植物  

摘要： 基因工程是我国当代生物科学的四大工程之一,在农业、工业以及环境保护等领域均具有深入应用。基因工程的持续发展有助于我国经济转型与生态城市建设。文章以基因工程技术为研究对象,从植物、医药与环保等三个方面重点探讨了基因工程技术的发展现状与前景。

关键词： 基因工程   抗体   食品安全   检测  

摘要： 食品安全是关系着人类身体健康与社会稳定发展的重大事项。在食品投入市场并流通之前必须对食品性能进行全面检测。因此,文章以食品安全检测技术为出发点,重点分析了基因工程抗体在食品安全检测中的具体应用。首先分析了基因工程抗体的作用原理、种类和主要技术,然后就毒素、农药残留和药物残留检测做出了探讨,以期为具体实践提供参考。

关键词： 基因工程   植物育种   应用   遗传  

摘要： 基因工程是生物科学研究中的四大工程之一,在植物、动物、生态建设等方面均有重要作用。植物育种是我国农业发展的关键所在,基因工程在植物育种方面大有可为,且已经取得优异的成果。文章以基因工程技术为研究对象,重点探讨了基因工程技术在植物育种方面的具体应用,旨在提高我国农业发展水平与植物生产率。

关键词： 生物工程   环境保护   基因工程   应用  

摘要： 生物工程是21世纪的核心技术之一,包含细胞工程、基因工程、发酵工程等三大工艺。生物工程广泛应用于诸多层面,且给生态环境保护提供了更多应对方法。因此,文章从生物工程与环境保护出发,首先分析了我国自然生态环境所存在的问题,然后概述了当代生物工程的现状及特点,最后指出了生物工程在环境保护中的实际应用,以期我国环境问题治理提供思路。

关键词： Empirical bioethics   Empirical research   Bioethics   Qualitative research   Quantitative research  

摘要： Background: The use of empirical research methods in bioethics has been increasing in the last decades. It has resulted in discussions about the 'empirical turn of bioethics' and raised questions related to the value of empirical work for this field, methodological questions about its quality and rigor, and how this integration of the normative and the empirical can be achieved. The aim of this paper is to describe the attitudes of bioethics researchers in this field towards the use of empirical research, and examine their actual conduct: whether they use empirical research methods (and if so, what methods), and whether (and how) they have made attempts at integrating the empirical and the normative. Methods: An anonymous online survey was conducted to reach scholars working in bioethics/biomedical ethics/ethics institutes or centers in 12 European countries. A total of 225 bioethics researchers participated in the study. Of those, 200 questionnaires were fully completed, representing a response rate of 42.6%. The results were analysed using descriptive statistics. Results: Most respondents (n = 175;87.5%) indicated that they use or have used empirical methods in their work. A similar proportion of respondents (61.0% and 59.0%) reported having had at least some training in qualitative or quantitative methods, respectively. Among the 'empirical researchers', more than a fifth (22.9%) had not received any methodological training. It appears that only 6% or less of the 'empirical researchers' considered themselves experts in the methods (qualitative or quantitative) that they have used. Only 35% of the scholars who have used empirical methods reported having integrated empirical data with normative analysis, whereas for their current projects, 59.8% plan to do so. Conclusions: There is a need to evaluate the current educational programs in bioethics and to implement rigorous training in empirical research methods to ensure that 'empirical researchers' have the necessar