Improvement in Biological and Geological Sciences LaboratoryInstruction and Student Research Through the Use of a Scanning Electron Microscope

9451844伯特了解外部和内部微结构及其化学成分对于了解生物和地质系统的功能和发展至关重要。具有冷冻修复系统和X射线能量色散探测器的高分辨率计算机驱动扫描电子显微镜为本科生提供了一种多功能的教学和研究工具。低温修复技术省去了数小时的准备时间，这使得许多学生可以使用扫描电子显微镜作为与课程相关的实验室练习的一部分。能量色散探测器对于化学成分的分析是至关重要的，这对于地质学的学生来说是很重要的，他们必须测定样品的矿物组成，而生物学的学生可能会观察沉积在树叶上的农药的化学成分。学生将在许多课程的实验室部分使用扫描电子显微镜，但它也将是学生研究的重要工具，这一点受到强烈鼓励。通过讲座/演示、实验室练习和学生研究，该项目每年将影响917名学生。

9451844 Burtt Understanding external and internal microstructure and its chemical composition is essential to understanding the function and development of biological and geological systems. A high resolution, computer-driven scanning electron microscope with a cryopreparation system and an X-ray Energy Dispersive Detector provides a versatile teaching and research tool for undergraduates. Cryopreparation eliminates hours of preparation time, which makes the SEM usable by many students as part of laboratory exercises associated with courses. The energy dispersive detector is vital to analysis of chemical composition, which is important for geology students who must determine mineral composition of samples and biology students who may look at the chemical composition of pesticides deposited on leaves. Students will use the SEM in the laboratory portion of many courses, but it will also be an important tool for student research, which is strongly encouraged. Through lecture/demonstration, laboratory exercises, and student research the project will impact 917 students/year.