DIFFERENTIAL SCANNING CALORIMETER UPGRADE

差示扫描量热计升级

• 批准号: 8364085
• 负责人: CURT R DUNNAM
• 金额: $ 0.05万
• 依托单位: CORNELL UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8364085
• 关键词: Access to Information; Calorimetry; Collection; Computer Hardware; Computer software; Computers; Data; Data Analyses; Data Collection; Data Storage and Retrieval; Devices; Funding; Grant; Heating; Manuals; Measurement; Modeling; National Center for Research Resources; Principal Investigator; Research; Research Infrastructure; Resources; Sampling; Scanning; Signal Transduction; Source; Specialist; System; Technology; Temperature; Time; United States National Institutes of Health; Update; analog; cost; data acquisition; digital; instrument; interest; operation

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. ACERT possesses a Perkin-Elmer model DSC-4 calorimeter which we occasionally want to employ for calorimetric measurements on samples provided by center users. This instrument is almost 30 years old and, although the calorimeter section functions well, the control interface, dedicated operating computer and data storage media are only of historical interest. Consequently, we were no longer able to store data or perform analysis with the original computing platform. To revitalize this otherwise functional instrument, we investigated the availability of a commercial aftermarket computer/control system upgrade (Instrument Specialists, Inc.) but found the available package of computer hardware with data analysis software to be both more comprehensive and more expensive than our requirements justified. Noting instead that our need was elementary, i.e., only the collection of heat flow vs. temperature data, we undertook an examination of the P-E DSC-4 apparatus and determined that extraction of appropriate signals and providing a means for their conversion to data for analysis and storage would be a reasonably straightforward task. Subsequently, we have updated the computer to a contemporary IBM-compatible unit and added an external, USB-interfaced universal data acquisition device (National Instruments, Inc.). Because we did not have access to information describing the Perkin-Elmer proprietary control signals, data collection is for now initiated by manual operation of the DSC-4 control and sample chasses at which time the computer begins collecting data. The data that is converted with the current arrangement comprises the DSC-4 heat flow rate and temperature analog signals, and a digital signal corresponding to temperature marker occurring every 10 ¿ C. We plan to develop by the end of the summer a suite of basic calorimetry analysis software routines for semiautomated analysis of the DSC-4 data.

该子项目是利用资源的众多研究子项目之一 由 NIH/NCRR 资助的中心拨款提供 该子项目的主要支持。 并且子项目的首席研究员可能是由其他来源提供的， 包括其他 NIH 来源的子项目可能列出的总成本。 代表子项目使用的中心基础设施的估计数量， NCRR 赠款不直接向子项目或子项目工作人员提供资金。 ACERT 拥有一台 Perkin-Elmer 型 DSC-4 量热计，我们偶尔想用它对中心用户提供的样品进行量热测量。该仪器已有近 30 年的历史，尽管量热计部分功能良好，但其控制界面和专用操作计算机仍然存在。和数据存储介质仅具有历史意义，我们无法再使用原始计算平台存储数据或执行分析，为了重振这种功能仪器，我们调查了商业售后计算机/控制系统升级的可用性。 （仪器专家公司）但发现带有数据分析软件的可用计算机硬件包比我们的合理要求更全面且更昂贵，相反，我们的需求是基本的，即仅收集热流与热流。温度数据后，我们对 P-E DSC-4 设备进行了检查，并确定提取适当的信号并提供将其转换为数据进行分析和存储的方法将是一项相当简单的任务。随后，我们将计算机更新为现代 IBM 兼容由于我们无法访问描述 Perkin-Elmer 专有控制信号的信息，因此数据收集目前由 DSC 的手动操作启动。 -4 次控制和采样追踪，此时计算机开始收集数据。当前配置转换的数据包括 DSC-4 热流率和温度模拟信号，以及与每 10 ¿ 出现的温度标记相对应的数字信号。 C. 我们计划在夏末开发一套基本量热分析软件例程，用于 DSC-4 数据的半自动分析。