Acquisition of a Scanning Electron Microscope.

购买扫描电子显微镜。

• 批准号: 9214566
• 负责人: Thomas Freeman
• 金额: $ 13.06万
• 依托单位: North Dakota State University Fargo
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-15 至 1995-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9214566&HistoricalAwards=false
• 关键词: Acquisition; Scanning; Electron; Microscope.

This proposal requests funds for the purchase of a scanning electron microscope and an x-ray microanalysis system. The Electron Microscopy Center at North Dakota State University is a common instrument facility that provides the only access to electron microscopy on campus. There are usually between 70 and 90 research scientists and students that use the facility each year. In addition to maintaining the equipment, the laboratory offers a complete line of service. In the last few years, food technologists and cereal chemists have discovered the need for ultrastructural data. Many samples such as doughs and glutens are particularly difficult to prepare for scanning electron microscopy. It is well documented that the preparation procedures employed for biological specimens result in significant artifact formation. Cryo-preparation and examination of frozen, fully hydrated doughs and glutens yield the best data. Specimen charging is a serious problem with the present scanning microscope as it is not generally possible to obtain secondary images at accelerating voltages of less than 8kV. To meet the present research requirements of these scientists and to simulate continued ultrastructural studies of foods, the acquisition of the equipment listed in this proposal is essential.

该提案要求提供资金，用于购买一台扫描仪， 电子显微镜和X射线微分析系统。 的 北达科他州州立大学电子显微镜中心 是一个通用的仪器设施， 在校园里使用电子显微镜 通常有 大约有70到90名科学家和学生 每年的设施。 除了维持 设备，实验室提供了一个完整的服务线。 在过去的几年里，食品技术专家和谷物 化学家们发现需要超微结构数据。 许多样品，如面团和面筋， 难以制备用于扫描电子显微镜。 它 有充分证据表明所采用的准备程序 对于生物样本会导致明显的伪影 阵 冷冻制备和检查冷冻， 完全水合的面团和面筋产生最好的数据。 标本收费是目前的一个严重问题 扫描显微镜，因为它通常不可能 在加速电压小于 8kV以上。 为了满足目前的研究要求， 这些科学家为了模拟持续的超微结构 研究食品，购置所列设备 这一提议至关重要。