以团队为基础的教学模式在外科实验教学中的应用

目的:探究将团队为基础的教学(TBL)模式应用在外科实验教学的效果。方法:为了更好的进行论证分析,该研究随机选取248名本科临床学生,并随机均分为观察组和对照组两组,在观察组中采用TBL教学模式进行教学,对照组中则采用传统的教学方式,经过一段时间的教学后对两组学生进行综合性考核并对观察组进行有关教学效果评价的问卷调查。结果经数据统计发现,观察组的综合技能考核成绩分数是92.4分,对照组分数是78.6分,从数据分析可知,观察组综合技能考核成绩明显要高于对照组,差异有统计学意义(P0.01)。而通过对问卷调查的统计也发现,观察组学生很多都认为TBL教学能够提高自己的各方面能力并能够提高自己的学习积极性和学习兴趣。结论 TBL教学教学模式在外科实验教学中的应用效果明显优于常规教学模式。     

New method for thickness determination and microscopic imaging of graphene-like two-dimensional materials

We employed the microscopic reflectance difference spectroscopy (micro-RDS) to determine the layer-number and microscopically image the surface topography of graphene and MoS₂ samples. The contrast image shows the efficiency and reliability of this new clipping technique. As a low-cost, quantifiable, no-contact and non-destructive method, it is not concerned with the characteristic signal of certain materials and can be applied to arbitrary substrates. Therefore it is a perfect candidate for characterizing the thickness of graphene-like two-dimensional materials.