高校生物工程专业实习教学的探索与思考

专业实习是理工科院校重要的实践教学环节.本文结合自己多年的实习教学实际,针对我系生物工程专业实习过程,分析了专业实习中存在的问题,并结合生物工程专业实习中的实际情况,提出一些可行的建议和改进措施.     

Development of a large-scale isolation chamber system for the safe and humane care of medium-sized laboratory animals harboring infectious diseases

The close phylogenetic relationship between humans and non-human primates makes non-human primates an irreplaceable model for the study of human infectious diseases. In this study, we describe the development of a large-scale automatic multi-functional isolation chamber for use with medium-sized laboratory animals carrying infectious diseases. The isolation chamber, including the transfer chain, disinfection chain, negative air pressure isolation system, animal welfare system, and the automated system, is designed to meet all biological safety standards. To create an internal chamber environment that is completely isolated from the exterior, variable frequency drive blowers are used in the air-intake and air-exhaust system, precisely controlling the filtered air flow and providing an air-barrier protection. A double door transfer port is used to transfer material between the interior of the isolation chamber and the outside. A peracetic acid sterilizer and its associated pipeline allow for complete disinfection of the isolation chamber. All of the isolation chamber parameters can be automatically controlled by a programmable computerized menu, allowing for work with different animals in different-sized cages depending on the research project. The large-scale multi-functional isolation chamber provides a useful and safe system for working with infectious medium-sized laboratory animals in high-level bio-safety laboratories.     

Viral infection of tobacco plants improves performance of Bemisia tabaci but more so for an invasive than for an indigenous biotype of the whitefly

The ecological effects of plant-virus-vector interactions on invasion of alien plant viral vectors have been rarely investigated. We examined the transmission of Tomato yellow leaf curl China virus (TYLCCNV) by the invasive Q biotype and the indigenous ZHJ2 biotype of the whitefly Bemisia tabaci, a plant viral vector, as well as the influence of TYLCCNV-infection of plants on the performance of the two whitefly biotypes. Both whitefly biotypes were able to acquire viruses from infected plants and retained t...     

《力学中的数学方法》课程教学改革的思索和探讨

针对目前《力学中的数学方法》课程的教学过程中存在的一些问题,从优化教学内容,教学方法以及教学手段方面提出了该课程教学改革的一些有利措施。     

“生物制品分析与检验”课程实践教学模式的改革初探

针对"生物制品分析与检验"课程当前实验教学中的问题,提出"自主探究——问题发现——实验设计——自评互评"的实践教学模式,旨在提高生物技术及应用专业学生的创新意识和实践能力。     

“卓越计划”背景下的工程力学课程改革探讨

为适应教育部“卓越工程师教育培养计划”的要求,达到培养高质量工程技术人才的目的,有必要对工程力学课程进行有效的教学改革。从改革教学内容、优化教学手段、调整教学要求、开展实践性教学活动等方面进行了探讨,并力求应用到教学当中。     

环境化学专业小学时工程力学教学改革探析

通过对工程力学教学研究现状的分析,发现环境化学专业小学时工程力学教学中存在的问题。环境化学专业小学时工程力学教学课时少,因此,应充分利用较少学时在教学中进行学科融合与渗透,对教学内容进行重组,采用组合式教学法,改革单一的考核方式。     

Immunomodulatory function of orally administered thymosin α1

Objective: To investigate the immunological function of a yeast expression system for thymosin α1(Tα1). Methods: A constructed Tα1 yeast expression system was used to investigate the immunological function of orally administered Tα1. Dried yeast containing three different concentration of Tα1 was fed to normal Balb/c mice and other Balb/c mice whose immunities were inhibited in advance by cyclophosphamide. Synthesized Tα1 peptide was used as positive control and dried yeast with empty plasmid was used as negative control. CD4 and CD8 levels were detected by flow cytometry assay. TNF-α IFN-γ IL-2, IL-6 and IL-10 levels were detected by liquid chip. Results: In normal Balb/c mice or immune inhibition Balb/c mice, CD8 levels were significantly increased. Especially in immune inhibition Balb/c mice, CD8 levels in synthesized Tα1 group (18.77％±4.72％),small dose group (13.48％±6.17％) and large dose group (22.74％±1.09％) were significantly higher than that in empty yeast control group (7.49％±2.14％). Conclusion: Orally administered Tα1 has its certain immunomodulatory function.     

对激发学生学习理论力学兴趣的研究

该文简述了在理论力学教学中，如何联系现代科技，激发学生学习理论力学的兴趣。     

加速电场中电子的德布洛意波长

用电场加速电子在电子技术的发展中占有非常重要的地位,电子加速器已经应用到各个工业生产部门和医疗部门.本文主要利用质能关系和德布洛意关系研究电子的德布洛意波长与加速电势之间的关系,并就弱电场和强电场两种情况进行讨论分析.结果表明,在弱电场中电子的德布洛意波长与加速电势的二分之一次方成反比,但在强电场中其关系则大不相同.