Reduced Pressure Cabin Testing of the Orion Atmosphere Revitalization Technology

An amine-based carbon dioxide (CO2) and water vapor sorbent in pressure-swing regenerable beds has been developed by Hamilton Sundstrand and baselined for the Atmosphere Revitalization System for moderate duration missions of the Orion Multipurpose Crew Vehicle. In previous years at this conference, reports were presented on extensive Johnson Space Center testing of this technology in a sea-level pressure environment with simulated and actual human metabolic loads in both open and closed-loop configurations. In 2011, the technology was tested in an open cabin-loop configuration at ambient and two sub-ambient pressures to compare the performance of the system to the results of previous tests at ambient pressure. The testing used a human metabolic simulator with a different type of water vapor generation than previously used, which added some unique challenges in the data analysis. This paper summarizes the results of: baseline and some matrix testing at all three cabin pressures, increased vacuum regeneration line pressure with a high metabolic load, a set of tests studying CO2 and water vapor co-adsorption effects relative to model-predicted performance, and validation tests of flight program computer model predictions with specific operating conditions

The Orion Atmosphere Revitalization Technology in Manned Ambient Pressure Space Suit Testing

An amine-based carbon dioxide (CO2) and water vapor sorbent in pressure-swing regenerable beds has been developed by Hamilton Sundstrand and baselined for the Atmosphere Revitalization System (ARS) for moderate duration missions of the Orion Multipurpose Crew Vehicle. The Orion ARS is designed to support not only open-cabin operations, tests of which have been reported in previous years at this conference, but also closed space suit-loop operations. A previous low-pressure suit loop test was performed with a human metabolic simulator, and humans wearing emergency masks were tested in a closed-loop configuration before that. In late 2011, simple tests were performed in a suit-loop configuration with human test subjects in prototype space suits with prototype umbilicals at ambient and two slightly above-ambient pressures. Trace contaminant filters and a prototype blower were also incorporated into the test rig. This paper discusses the performance of the ARS technology in that 2011 test configuration

Amine Swingbed Payload Testing on ISS

One of NASA/Johnson Space Center's test articles of the amine-based carbon dioxide (CO2) and water vapor sorbent system known as the CO2 And Moisture Removal Amine Swing-bed, or CAMRAS, was incorporated into a payload on the International Space Station (ISS). The intent of the payload is to demonstrate the spacecraft-environment viability of the core atmosphere revitalization technology baselined for the new Orion vehicle. In addition to the air blower, vacuum connection, and controls needed to run the CAMRAS itself, the payload incorporates a suite of sensors for scientific data gathering, a water save function, and an air save function. The water save function minimizes the atmospheric water vapor reaching the CAMRAS unit, thereby reducing ISS water losses that are otherwise acceptable, and even desirable, in the Orion environment. The air save function captures about half of the ullage air that would normally be vented overboard every time the cabin air-adsorbing and space vacuum-desorbing CAMRAS beds swap functions. The JSC team conducted 1000 hours of on-orbit Amine Swingbed Payload testing in 2013. This paper presents the basics of the payload's design and history, as well as a summary of the test results, including comparisons with prelaunch testing

Alexitimia e Atitudes de Procura de Ajuda em Estudantes Universitários

Aim: This epidemiological study focused on prevalence of the personality trait, alexithymia – the inability to recognize and describe one’s own emotions – among college-aged students. Method: Levels of normative alexithymia (measured by the NMAS), clinical alexithymia (measured by the TAS), as well as attitudes towards help seeking behavior (measured by the ATSPPH) were assessed. Results: A total of 547 participants were collected from over 48 colleges and universities, primarily in Western New York. Results indicated that 89.5% of college students displayed moderate to high levels of normative alexithymia and 48.7% displayed moderate to high levels of clinical alexithymia. Additionally, there were no significant differences between the scores of men and women on either alexithymia measure. Significant findings indicated that there was a positive relationship between clinical alexithymia scores and attitudes toward help-seeking. Conclusion: These results call into question previous literature, which states that there is no correlation between alexithymia and help-seeking behavior (Berger et al., 2005, https://doi.org/10.1037/1524-9220.6.1.73). The results of this study suggest a shift in culture, as well as a need for more research regarding alexithymia.Objetivo: Este estudo epidemiológico focou-se na prevalência do traço de personalidade alexitimia – incapacidade de reconhecer e descrever as próprias emoções – entre estudantes em idade universitária. Método: Níveis de alexitimia normativa (medidos através do NMAS), alexitimia clínica (medida através do TAS), assim como atitudes em relação a comportamentos de procura de ajuda (medidos através do ATSPPH) foram medidos. Resultados: Foram incluídos um total de 547 participantes de 48 colégios e universidades, maioritariamente da zona Ocidental de Nova Iorque. Os resultados indicaram que 89.5% dos estudantes universitários apresentaram níveis moderados a elevados de alexitimia, e 48.7% apresentaram níveis moderados a elevados de alexitimia clínica. Adicionalmente, não foram encontradas diferenças significativas entre os resultados de homens e mulheres em ambas as medidas de alexitimia. Os resultados significativos indicaram a existência de uma relação positiva entre resultados clínicos de alexitimia e atitudes em relação à procura de ajuda. Conclusão: Estes resultados questionam a literatura existente, que afirma não existir correlação entre alexitimia e comportamentos de procura de ajuda (Berger et al., 2005, https://doi.org/10.1037/1524-9220.6.1.73). Os resultados deste estudo sugerem uma mudança cultural, bem como a necessidade de mais investigação na área da alexitimia

Reduced Pressure Cabin Testing of the Orion Atmosphere Revitalization Technology

An amine-based carbon dioxide (CO2) and water vapor sorbent in pressure-swing regenerable beds has been developed by Hamilton Sundstrand and baselined for the Atmosphere Revitalization System for moderate duration missions of the Orion Multipurpose Crew Vehicle. In previous years at this conference, reports were presented on extensive Johnson Space Center testing of this technology in a sea-level pressure environment with simulated and actual human metabolic loads in both open and closed-loop configurations. In 2011, the technology was tested in an open cabin-loop configuration at ambient and two sub-ambient pressures to compare the performance of the system to the results of previous tests at ambient pressure. The testing used a human metabolic simulator with a different type of water vapor generation than previously used, which added some unique challenges in the data analysis. This paper summarizes the results of: baseline and some matrix testing at all three cabin pressures, increased vacuum regeneration line pressure with a high metabolic load, a set of tests studying CO2 and water vapor co-adsorption effects relative to model-predicted performance, and validation tests of flight program computer model predictions with specific operating conditions

2009 Continued Testing of the Orion Atmosphere Revitalization Technology

An amine-based carbon dioxide (CO2) and water vapor sorbent in pressure-swing regenerable beds has been developed by Hamilton Sundstrand and baselined for the Orion Atmosphere Revitalization System (ARS). In three previous years at this conference, reports were presented on extensive Johnson Space Center (JSC) testing of this technology in a sea-level pressure environment, with simulated and real human metabolic loads, in both open and closed-loop configurations. The test article design was iterated a third time before the latest series of such tests, which was performed in the first half of 2009. The new design incorporates a canister configuration modification for overall unit compactness and reduced pressure drop, as well as a new process flow control valve that incorporates both compressed gas purge and dual-end vacuum desorption capabilities. This newest test article is very similar to the flight article designs. Baseline tests of the new unit were performed to compare its performance to that of the previous test articles. Testing of compressed gas purge operations helped refine launchpad operating condition recommendations developed in earlier testing. Operating conditions used in flight program computer models were tested to validate the model projections. Specific operating conditions that were recommended by the JSC test team based on past test results were also tested for validation. The effects of vacuum regeneration line pressure on resulting cabin conditions was studied for high metabolic load periods, and a maximum pressure is recommende

Amine Swingbed Payload Testing on ISS

One of NASA Johnson Space Center's test articles of the amine-based carbon dioxide (CO2) and water vapor sorbent system known as the CO2 And Moisture Removal Amine Swing-bed, or CAMRAS, was incorporated into a payload on the International Space Station (ISS). The intent of the payload is to demonstrate the spacecraft-environment viability of the core atmosphere revitalization technology baselined for the new Orion vehicle. In addition to the air blower, vacuum connection, and controls needed to run the CAMRAS, the payload incorporates a suite of sensors for scientific data gathering, a water save function, and an air save function. The water save function minimizes the atmospheric water vapor reaching the CAMRAS unit, thereby reducing ISS water losses that are otherwise acceptable, and even desirable, in the Orion environment. The air save function captures about half of the ullage air that would normally be vented overboard every time the cabin air-adsorbing and space vacuum-desorbing CAMRAS beds swap functions. The JSC team conducted 1000 hours of on-orbit Amine Swingbed Payload testing in 2013 and early 2014. This paper presents the basics of the payload's design and history, as well as a summary of the test results, including comparisons with prelaunch testing

Writing in College: From Competence to Excellence

Writing in College is designed for students who have largely mastered high-school level conventions of formal academic writing and are now moving beyond the five-paragraph essay to more advanced engagement with text. It is well suited to composition courses or first-year seminars and valuable as a supplemental or recommended text in other writing intensive classes. It provides a friendly, down-to-earth introduction to professors’ goals and expectations, demystifying the norms of the academy and how they shape college writing assignments. Each of the nine chapters can be read separately, and each includes suggested exercises to bring the main messages to life. Students will find in Writing in College a warm invitation to join the academic community as novice scholars and to approach writing as a meaningful medium of communication. With concise discussions, clear multidisciplinary examples, and empathy for the challenges of student life, Guptill conveys a welcoming tone. In addition, each chapter includes Student Voices: peer-to-peer wisdom from real SUNY Brockport students about their strategies for and experiences with college writing. While there are many affordable writing guides available, most focus only on sentence-level issues or, conversely, a broad introduction to making the transition. Writing In College, in contrast, provides both a coherent frame for approaching writing assignments and indispensable advice for effective organization and expression

Writing in College: From Competence to Excellence

Writing in College is designed for students who have largely mastered high-school level conventions of formal academic writing and are now moving beyond the five-paragraph essay to more advanced engagement with text. It is well suited to composition courses or first-year seminars and valuable as a supplemental or recommended text in other writing intensive classes. It provides a friendly, down-to-earth introduction to professors’ goals and expectations, demystifying the norms of the academy and how they shape college writing assignments. Each of the nine chapters can be read separately, and each includes suggested exercises to bring the main messages to life. Students will find in Writing in College a warm invitation to join the academic community as novice scholars and to approach writing as a meaningful medium of communication. With concise discussions, clear multidisciplinary examples, and empathy for the challenges of student life, Guptill conveys a welcoming tone. In addition, each chapter includes Student Voices: peer-to-peer wisdom from real SUNY Brockport students about their strategies for and experiences with college writing. While there are many affordable writing guides available, most focus only on sentence-level issues or, conversely, a broad introduction to making the transition. Writing In College, in contrast, provides both a coherent frame for approaching writing assignments and indispensable advice for effective organization and expression

Writing in College: From Competence to Excellence

Writing in College is designed for students who have largely mastered high-school level conventions of formal academic writing and are now moving beyond the five-paragraph essay to more advanced engagement with text. It is well suited to composition courses or first-year seminars and valuable as a supplemental or recommended text in other writing intensive classes. It provides a friendly, down-to-earth introduction to professors’ goals and expectations, demystifying the norms of the academy and how they shape college writing assignments. Each of the nine chapters can be read separately, and each includes suggested exercises to bring the main messages to life. Students will find in Writing in College a warm invitation to join the academic community as novice scholars and to approach writing as a meaningful medium of communication. With concise discussions, clear multidisciplinary examples, and empathy for the challenges of student life, Guptill conveys a welcoming tone. In addition, each chapter includes Student Voices: peer-to-peer wisdom from real SUNY Brockport students about their strategies for and experiences with college writing. While there are many affordable writing guides available, most focus only on sentence-level issues or, conversely, a broad introduction to making the transition. Writing In College, in contrast, provides both a coherent frame for approaching writing assignments and indispensable advice for effective organization and expression