浅析加强生物显微镜维护与管理的方法

生物显微镜是医学形态学实验的常用仪器,加强显微镜管理是形态学科实验教学顺利开展的重要保障。为了提高显微镜的完好率和使用率,确保实验教学正常开展,通过从事医学形态实验教学,探索了加强生物显微镜管理的方法。     

生物显微镜物的检测与校正

本文通过观察星点像的实践，判断生物显微镜物镜像差存在情况，总结显微镜物镜像差的校正方法。从而提高生物显微镜物镜成像的质量。     

使用生物显微镜的常见问题及解决方法

显微镜在生物教学和科研中使用率较高,发生问题的可能性也较大.必须针对具体情况具体分析,采取有效的解决方法,才能使生物显微镜充分发挥作用,并尽可能延长其使用寿命.     

如何训练学生使用显微镜

显微镜的问世,开拓了生物科学研究的新领域,为对生物个体研究从宏观进入到微观做出了重大贡献。如何在现有条件下达到使学生学会使用显微镜,这是我们每一个生物教师都应该认真思索的。根据几年来的教学经验,我总结出以下几点做法: 一、对使用显微镜方法的讲解要切中要害在讲解有关显微镜知识的过程中,我没有照本宣科,泛泛而谈,而是在注意到知识的整体性的同时,着重讲述了一些关健性的问题,     

基于数码显微互动教学系统的初中生物实验探究

正生物教学中开展显微实验教学的目的是让学生观察显微镜中的生物现象、了解生物的生活和繁殖规律、让学生动手实践的一种教学方法。在传统的显微互动教学中,互动的方法只能局限于一小部分同学之间互动实验,而使用数码显微技术,则能突破传统显微互动教学的弊端。数码显微设备是指把显微镜与多媒体技术、计算机网络技术结合起来的一种光电图像转换装置,它突破了传统显微镜光学设备只能即时实验,无法保存结果、无法共享实     

普通生物显微镜镜筒下滑的维修

镜筒自动下滑是显微镜的常见故障,而农村中学专业教师缺少,使这一常见故障得不到及时修理,影响了正常教学使用,制约了实验教学的开展。现结合本人在教学实践和教学研究过程中的一些经验,谈谈普通生物显微镜镜筒下滑的维修方法。1 故障原因大多数普通生物显微镜镜筒下滑原因主要是粗调的故障,一是粗调过松,二是粗调过紧,学生使用时用力过大,使齿条磨损造成的。2 维修方法     

显微镜使用中节约教学资源的体会

医用生物显微镜是医学形态学实验教学中重要的实验室设备,只有熟悉显微镜的结构和功能,才能熟练地使用和保养显微镜.本文对实验教学过程中显微镜的高效节约使用做了分析.     

基于半导体制冷的低温生物学显微镜

目前的低温生物显微镜多为技术含量高的大型系统，目前还不能普及用于学生的实验教学。我们利用半导体制冷片体积小、制冷迅速、价格低廉的特点，使之与普通生物显微镜复合，制成简易的低温生物显微镜。     

显微镜构造和使用的综合创新实验教学设计

人眼看清物体需要满足三个条件：“光”“工作距离”和“对比度”。显微镜是人眼视觉的延伸,但它只能解决“光”和“工作距离”问题,却不能解决“对比度”问题。该问题需要通过生物制片来解决,即在制片过程中,通过染色来获得对比度。显微镜和生物制片相结合的创新性教学,不但丰富了显微镜教学的内容,而且使得显微镜的使用更加完善,同时又培养了学生的动手能力、辩证思维等多方面能力。     

利用显微镜改制显微投影仪

目前很多学校没有显微投影仪,给生物课的教学带来一定困难。利用显微镜改制成显微投影仪,改装简单,操作方便,一物二用,能收到较好的效果。现将方法介绍如下:1.采用普通生物显微镜,如用 XSB—03型生物显微镜,把低倍率物镜(如用放大倍数为10、N.A.0.25的物镜)安置在物镜     

The Promise and Perils of Thought Experiments

A number of thought experiments are cited, some well-known, some not. These illustrate the power of thought experiments. Other examples are given that show some of the dangers. As well as examples from the science, some examples of visual reasoning from mathematics are also presented, again with an eye to illustrating their promise and perils. Morals are drawn, perhaps the most important being that we still have much to learn about them, just as we once learned about the promise and perils of microscopes in their early days. They are a tool that can mislead, but they can also open up a whole new world.     

奥林巴斯BX50系统显微镜使用中常见故障排除与日常维护

本文根据在工作中对显微镜维护所积累的经验,对使用中经常会遇到的各种问题,显微镜主要部件的维护与故障排除,并结合我们的工作经验提出了一些建议。     

一种测定显微镜放大率的新方法

利用准直管测定焦距的原理,提出了一种测量显微镜放大率的新方法,与传统做法相比这种方法可以减小误差,而且有助于理解实验原理.     

Using a Replica of Leeuwenhoek's Microscope to Teach the History of Science and to Motivate Students to Discover the Vision and the Contributions of the First Microscopists

The history of science should be incorporated into science teaching as a means of improving learning and also to increase the students'' understanding about the nature of science. In biology education, the history of microscopy deserves a special place. The discovery of this instrument not only opened a new and fantastic microworld but also led to the development of one unifying principle of biological sciences (i.e., cell theory). The microscopes of Leeuwenhoek and Hooke opened windows into the microworld of living organisms. In the present work, the knowledge of these themes was analyzed in a group of students beginning an undergraduate biology course. Our data suggest that the history of microscopy is poorly treated at the secondary school level. We propose a didactic activity using a replica of Leeuwenhoek''s microscope made with Plexiglas and a lens obtained from a key chain laser pointer or from a broken CD drive. The proposed activity motivated students to learn about microscopy and helped them to appreciate scientific knowledge from a historical perspective.     

Improved learning efficiency and increased student collaboration through use of virtual microscopy in the teaching of human pathology

The implementation of virtual microscopy in the teaching of pathology at the Bloomington, Indiana extension of the Indiana University School of Medicine permitted the assessment of student attitudes, use and academic performance with respect to this new technology. A gradual and integrated approach allowed the parallel assessment with respect to both the virtual and optical microscopes. Student survey data indicated that the virtual imaging technology was enthusiastically received, and aggregate grade comparisons with the previous classes showed no decrease in content mastery. Survey questions assessing a variety of parameters reveal improved time and resource utilization, as well as increased student collaboration. Even so, 50% of the respondents indicated having both optical and virtual microscopes available was preferable. Anat Sci Ed 1:240–246, 2008. © 2008 American Association of Anatomists.     

显微镜镜外光源的改进和安装

用自制滑轮改进了生物实验室的日光灯照装置,从而保证了各种自然光线条件下,均能使显微镜获得充足的照明光源。并且达到了投资少,安全,美观,实用的目的,对中学生物中教室瘘实验室改善显微镜照明条件有普遍的借鉴意义。     

岩体非连续变形数值分析方法的特点及比较

岩体稳定性分析,有几种常用的非连续介质分析方法。本文先是概述了几种常用的数值分析方法,然后对这几种分析方法作了比较,得出它们的区别与联系,并总结了理论存在的不足。     

高校贫困生思想政治教育存在的问题及对策

贫困生是高校的一个特殊群体,思想政治教育工作者应对他们有一个全面、深入地了解,从物质上、精神上和心理上给予关怀和帮助。对他们的教育也应采取一些特殊的方式方法。现实中,这一特殊群体的思想政治教育工作还存在一些误区。本文在分析当前贫困生现状及贫困生思想政治教育存在的几个问题的基础上,结合工作中的实际情况,提出了加强和改进贫困生思想政治教育的具体建议。     

基于图像技术分析刀具破损的软件开发

As the present day digital microsystems do not provide specialized microscopes that can detect cutting-tool, analysis software has been developed using VC++. A module for verge test and image segmentation is designed specifically for cutting-tools. Known calibration relations and given postulates are used in scale measurements. Practical operations show that the software can perform accurate detection.     

Seeing with electrons

In this article we briefly review the application of electrons in the field of microscopy. Two types of microscopes are discussed, the electron microscope and the tunneling microscope. It is emphasized that in both the applications the electron behaves as a quantum mechanical object.