36 research outputs found

    Compactor for Space Toilet

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    A toilet for use on a space vehicle has a toilet bowl having a storage canister at a remote end for receiving human waste. The compactor includes a cable connected to a lever which pulls the cable in a direction forcing the compactor into the storage canister to compact the captured waste when the lever is actuated

    The Demonstration of a Robotic External Leak Locator for the International Space Station

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    The International Space Station (ISS) and all currently conceivable future manned spacecraft are susceptible to mission impacts due to fluid/gas leaks to the exterior environment. For example, there is a well-known risk of ammonia leaks from the ISS External Active Thermal Control System (EATCS) loops and as of 2016 there was no method to locate them. It was, therefore, critical to develop a method for detecting and locating leaks to preserve vehicle health. The Robotic External Leak Locator (RELL) was developed and deployed to the ISS to provide this capability. An on-orbit validation and demonstration was successfully completed in December 2016 and leak locating operations occurred in February 2017. This paper discusses the results of these exercises including measurements of the environment around ISS, detection of a small ammonia leak and implementation of leak locating methodologies. RELL is a collaboration between NASA's Goddard Space Flight Center (GSFC) and Johnson Space Center (JSC) and was launched to the ISS as a Technology Demonstration Payload in December 2015 on Orbital-ATK Commercial Resupply Flight 4

    The PHENIX Experiment at RHIC

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    The physics emphases of the PHENIX collaboration and the design and current status of the PHENIX detector are discussed. The plan of the collaboration for making the most effective use of the available luminosity in the first years of RHIC operation is also presented.Comment: 5 pages, 1 figure. Further details of the PHENIX physics program available at http://www.rhic.bnl.gov/phenix

    Amy Wesselman and David Autrey Interview

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    This interview is an oral history conducted by Linfield College archivist Rich Schmidt with Amy Wesselman and David Autrey of Westrey Wine Company. The interview took place at Westrey Wine Company in McMinnville, Oregon on January 16, 2018. Amy Wesselman and David Autrey are co-owners and winemakers at Westrey Wine Company. In this interview, they discuss how they got hooked on wine and the wonderful mentors that showed them the way at the start. Wesselman discusses her involvement with the International Pinot Noir Celebration (IPNC), and both Wesselman and Autrey share their views on what the future looks like for Oregon wine

    Brooks Winery 20th Anniversary Interview: Amy Wesselman and David Autrey

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    This interview is an oral history conducted by Linfield College archivist Rich Schmidt with Amy Wesselman and David Autrey of Westrey Wine Company. The interview took place at Westrey Wine Company in McMinnville, Oregon on January 16, 2018. Amy Wesselman and David Autrey are co-owners and winemakers at Westrey Wine Company. In this interview, part of the Brooks Winery 20th Anniversary Project, Wesselman and Autrey discuss the unexpected passing of Jimi Brooks, the founder of Brooks Winery, in September of 2004. Many of Brooks\u27s wine industry friends, including Wesselman and Autrey, came together to complete Brooks\u27s harvest that year. This interview sheds light on the story of camaraderie in the face of tragedy in the Oregon wine industry

    Capacity enhancement of aqueous borohydride fuels for hydrogen storage in liquids

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    In this work we demonstrate enhanced hydrogen storage capacities through increased solubility of sodium borate product species in aqueous media achieved by adjusting the sodium (NaOH) to boron (B(OH)3) ratio, i.e., M/B, to obtain a distribution of polyborate anions. For a 1:1mol ratio of NaOH to B(OH)3, M/B=1, the ratio of the hydrolysis product formed from NaBH4 hydrolysis, the sole borate species formed and observed by 11B NMR is sodium metaborate, NaB(OH)4. When the ratio is 1:3 NaOH to B(OH)3, M/B=0.33, a mixture of borate anions is formed and observed as a broad peak in the 11B NMR spectrum. The complex polyborate mixture yields a metastable solution that is difficult to crystallize. Given the enhanced solubility of the polyborate mixture formed when M/B=0.33 it should follow that the hydrolysis of sodium octahydrotriborate, NaB3H8, can provide a greater storage capacity of hydrogen for fuel cell applications compared to sodium borohydride while maintaining a single phase. Accordingly, the hydrolysis of a 23wt.% NaB3H8 solution in water yields a solution having the same complex polyborate mixture as formed by mixing a 1:3M ratio of NaOH and B(OH)3 and releases \u3e8eq of H2. By optimizing the M/B ratio a complex mixture of soluble products, including B3O3(OH)5 2-, B4O5(OH)4 2-, B3O3(OH)4 -, B5O6(OH)4 - and B(OH)3, can be maintained as a single liquid phase throughout the hydrogen release process. Consequently, hydrolysis of NaB3H8 can provide a 40% increase in H2 storage density compared to the hydrolysis of NaBH4 given the decreased solubility of sodium metaborate
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