MRI: Development of Instrumentation to Control Seawater Composition for Ocean Acidification Research

MRI：开发用于海洋酸化研究的控制海水成分的仪器

• 批准号: 1039930
• 负责人: Andrew Dickson
• 金额: $ 20.99万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-01-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1039930&HistoricalAwards=false
• 关键词: MRI; Development; Instrumentation; Control; Seawater

The PI requests MRI funding to develop an instrument that is capable of providing a high degree of control over the temperature, the CO2 levels, and the oxygen levels in seawater that is being used to grow organisms for ocean acidification experiments. Furthermore, the proposed system will be able to vary these parameters dynamically, allowing investigators not only to study perturbed steady-state conditions, but also to control the variability of these parameters so as to be able to mimic natural conditions more closely.Broader ImpactsThe broader impacts of this work are very great. As documented in the proposal there are numerous top-quality scientists that already signed up to use this system in their work. These folks can now focus on their biological experimentation with the assurance that the marine chemistry of the experimental system is properly controlled and described. A lot of very important results in many fields (phytoplankton, benthic inverts, pelagics, etc.) are likely to come out of this system. The proposal also entrains undergraduates in the design process of the aquarium system via a capstone engineering design course and through summer internships, and will likely involve a graduate student throughout its development. Undergraduate students will be involved in the design and testing of various components, particularly the gas mixing systems and/or the gas equilibration system using membrane contactors. This will be done at no cost to the proposal by integrating the design of some of the components into a 2-quarter undergraduate Mechanical Engineering capstone design course and by involving summer interns through the Marine Physical Laboratory Intern Program. Publication of the design and specifications of the proposed instrumentation in a peer-reviewed journal is a very strong component of the proposal.

PI要求MRI资助开发一种能够高度控制温度，CO2水平和海水中氧气水平的仪器，用于培养海洋酸化实验的生物体。此外，拟议中的系统将能够动态地改变这些参数，使研究人员不仅研究扰动稳态条件，而且还控制这些参数的变化，以便能够更接近地模仿自然条件。正如提案中所记录的那样，有许多高质量的科学家已经签署了在他们的工作中使用该系统的协议。这些人现在可以专注于他们的生物实验，确保实验系统的海洋化学得到适当的控制和描述。在许多领域（浮游植物、底栖动物、浮游生物等）取得了许多非常重要的成果。很可能会从这个系统中出来。该提案还通过顶点工程设计课程和暑期实习，引导本科生参与水族馆系统的设计过程，并可能在整个开发过程中涉及研究生。本科生将参与各种组件的设计和测试，特别是气体混合系统和/或使用膜接触器的气体平衡系统。这将通过将一些组件的设计整合到2个季度的本科机械工程顶点设计课程中，并通过海洋物理实验室实习生计划让暑期实习生参与进来，而无需花费任何费用。在同行评审的期刊上公布拟议仪器的设计和规格是该提案的一个非常重要的组成部分。