排序方式： 共有91条查询结果，搜索用时 15 毫秒
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昆虫杆状病毒在生物技术研究中的应用 总被引：2，自引：0，他引：2
随着昆虫杆状病毒分子生物学研究的不断深入，昆虫杆状病毒在生物技术研究中也得到了应用。利用杆状病毒作为载体，在昆虫细胞和虫体内表达外源基因，形成了昆虫杆状病毒载体表达系统，利用杆状病毒携带外源基因，通过同源重组将外源基因导入到家蚕的基因组构建了转基因家蚕；通过向杆状病毒基因组中插入毒素、激素、酶抑制剂等的基因或从杆状病毒基因组中删除某个基因，或通过不同杆状病毒间的杂交，使子代病毒的宿主域扩大，从而提高了杆状病毒作为生物杀虫剂的杀虫效果。本文对杆状病毒在上述几个方面的应用进行了简要综述。 相似文献
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The geography of opportunity: spatial heterogeneity in founding rates and the performance of biotechnology firms 总被引：3，自引：0，他引：3
One of the most commonly observed features of the organization of markets is that similar business enterprises cluster in physical space. In this paper, we develop an explanation for firm co-location in high-technology industries that draws upon a relational account of new venture creation. We argue that industries cluster because entrepreneurs find it difficult to leverage the social ties necessary to mobilize essential resources when they reside far from those resources. Therefore, opportunities for high tech entrepreneurship mirror the distribution of critical resources. The same factors that enable high tech entrepreneurship, however, do not necessary promote firm performance. In the empirical analyses, we investigate the effects of geographic proximity to established biotechnology firms, sources of biotechnology expertise (highly-skilled labor), and venture capitalists on the location-specific founding rates and performance of biotechnology firms. The paper finds that the local conditions that promote new venture creation differ from those that maximize the performance of recently established companies. 相似文献
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为培养高素质生物工程类人才,成都大学生物工程专业积极调整专业课程教学计划,改革教学方法。注重实验教学环节的改革,通过建立实验教学管理新机制和新的实验课程体系,培养学生的生物学能力。通过加强学生科技创新队伍的建设、营造良好的科技文化环境、提供必要的科技活动资金和实验场所,培养学生的创新能力。注重校内外培养相结合,拓宽学生就业渠道。 相似文献
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生物技术专业地方性应用型转型建设研究 总被引：2，自引：0，他引：2
以“地方性、应用型”办学定位为指导,以注重内涵、突出优势、强化特色的原则发展专业方向,改革并加强专业发展的重要环节如培养方案、专业课程体系、实习实训平台、应用型师资队伍和教学质量监管等,促进地方性应用型生物技术专业建设和人才培养水平的整体提升. 相似文献
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对双语教学准备过程中涉及的问题进行了分析并有针对性地对各项准备环节进行了设计.师资水平和学生英语能力是制约生物技术专业双语教学有效开展的关键因素,对于新建本科院校来讲,学生对于非母语教学的接受能力是制约双语教学的最大瓶颈.为提高双语教学质量,应在课程从教与学以及环境等多个方面做好准备,如教师的准备、学生的准备和教学氛围的准备等. 相似文献
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Michelle Gittelman 《Research Policy》2006,35(7):1052-1068
The biotechnology industry is a striking example of the disconnect between the location of knowledge creation and its commercial development. I argue that national technological performance in biotechnology is critically affected by institutions governing scientific careers, which shape the professional identities and boundary-spanning activities of research scientists. I test this in a comparison of the United States and France. Drawing on fieldwork and analysis of patent data, I compare institutional frameworks and estimate models of forward patent citations. The models show that entrepreneurial firms are associated with high-performing innovations in this sector whereas large established firms perform poorly in both countries, and highlight the importance of institutions in creating country-specific combinations of human capital with organizational capabilities. 相似文献
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Genome segments S8 of two Chinese isolates of rice black-streaked dwarf virus (RBSDV), one from Zhejiang Province and another from Hebei Province, were amplified by RT-PCR and sequenced. Both segments consisted of 1936 nts in full length (EMBL accession numbers were AJ297431 and AJ297432, respectively) and contained only one big open reading frame which encoded a polypeptide with molecular weight of 68kD. The two Chinese isolates shared 94.0% and 96.5% identity at nucleotide and amino acid level, respectively. They shared 94.5-94.9% and 92.5-92.9% homology with S8 of RBSDV Japanese isolate at nucleotide and amino acid level, respectively; shared 85.1-87.6% and 91.7-91.9% homology with S7 of Italian MRDV (maize rough dwarf virus). 相似文献
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