Radioactive nondestructive test method

Various radioisotope techniques were used as diagnostic tools for determining the performance of spacecraft propulsion feed system elements. Applications were studied in four tasks. The first two required experimental testing involving the propellant liquid oxygen difluoride (OF2): the neutron activation analysis of dissolved or suspended metals, and the use of radioactive tracers to evaluate the probability of constrictions in passive components (orifices and filters) becoming clogged by matter dissolved or suspended in the OF2. The other tasks were an appraisal of the applicability of radioisotope techniques to problems arising from the exposure of components to liquid/gas combinations, and an assessment of the applicability of the techniques to other propellants

Small and medium agility dogs alter their kinematics when the distance between hurdles differs

There is currently a lack of research examining the health and welfare implications for competitive agility dogs. The aim of this study was to examine if jump kinematics and apparent joint angles in medium (351 mm - 430 mm to the withers) and small (< 350 mm to the withers) agility dogs altered when distances between consecutive upright hurdles differ. Dogs ran a course of nine hurdles; three set at 3.6 m apart; three at 4 m apart and three at 5 m apart. Both medium (P=0.044) and small (P=0.006) dogs landed closer to the hurdle when consecutive hurdles were set at 3.6 m apart, with small dogs jumping slower at this distance (P=0.006). Results indicate that jump kinematics, but not apparent joint angles, alter when the spacing between hurdles differs. These findings may have implications for the health and welfare of agility dogs and should be used to inform future changes to rules and regulations

Application of radioactive tracer techniques to flow decay problems Final interim report, 26 Mar. - 26 Oct. 1970

Applying radioactive tracer techniques to detection of metal contaminants within components of propellant feed syste

Monadic, material and mirroring: Female bodies in track athletics culture

This study explored how female track athletes experience and use their bodies within the contexts (social places) that form part of their everyday routines. Using ethnographic methods (focus groups, observations, self-directed photographic elicitation, and reflexive diary entries) the research focused on a training group of five semi-elite female track athletes based in the UK in which one researcher was a full participant. Arthur Frank’s theory of the body is employed as an analytical lens to explore and illuminate the predominant types of body usage manifest in their embodiments. The findings indicated that the athletes were predominantly mirroring bodies, with focus on appearance central to their experiences. Crucially, these women desired more muscle in the mirroring process. Finally, attention is drawn to Frank’s typology as a useful framework through which to contribute to some of the key issues related to women’s experiences of their bodies in sport

Distributed simulation and the grid: Position statements

The Grid provides a new and unrivaled technology for large scale distributed simulation as it enables collaboration and the use of distributed computing resources. This panel paper presents the views of four researchers in the area of Distributed Simulation and the Grid. Together we try to identify the main research issues involved in applying Grid technology to distributed simulation and the key future challenges that need to be solved to achieve this goal. Such challenges include not only technical challenges, but also political ones such as management methodology for the Grid and the development of standards. The benefits of the Grid to end-user simulation modelers also are discussed

B531: Sources of Maine Poultry Meat and Market Outlets

No episode in the history of Maine\u27s agriculture was as spectacular as the rapid growth of the poultry meat industry. The leading role in this expansion was played by broilers. Within the 15-year span from 1938 to 1952, the number of broilers produced increased more than 50-fold, from less than 400,000 birds in 1938 to more than 23 million in 1952. Gross farm income from broilers increased even more rapidly, from about $200,000 in 1938 to nearly$24,000,000 by 1952. This expansion in commercial broiler production made the poultry industry jump from its usual third-place position as a source of income for Maine farmers to the number one spot in 1951.https://digitalcommons.library.umaine.edu/aes_bulletin/1035/thumbnail.jp

Assessment of the Carbon and Cost Savings of a Combined Diesel Generator, Solar Photovoltaic, and Flywheel Energy Storage Islanded Grid System

The use of diesel generators to provide power for islanded grids has been the technology of choice but they generate substantial carbon emissions unless the part or all the fuel comes from a renewable source. Notwithstanding this, the engine must be sized to meet maximum demand and will operate inefficiently at part load most of the time, which is particularly bad for a synchronous constant speed engine. Given the availability of low cost solar photovoltaic (PV) systems, it is very enticing to fit a diesel generator and allow the engine to be turned off during PV generation. However, this combination will not work without some form of energy storage since it takes time for the engine to start, leading to gaps in supply and instability of the system. Lithium-ion batteries are typically considered to be the best solution to this problem because they have a high response rate, costs are lower, and they are available as products. However, they will suffer from the limited cycle and calendar life due to high cycling requirements in the application described. It is, therefore, proposed that a flywheel system could offer a lower lifetime cost alternative since only short duration bridging power storage is needed and flywheels of appropriate design can offer lower power cost than Lithium-ion battery systems. Flywheels are particularly attractive since they have a very high calendar with almost an infinite cycle life and are fully recyclable at the end of life. This research, therefore, presents an assessment of the flywheel energy storage system (FESS) as an alternative to electrochemical batteries to supplement solar PV systems backed up by diesel generators. The model of an islanded PV system combined with a diesel generator and a FESS supplying power to a residential load is implemented in MATLAB/Simulink. The results of the analysis for the cases with and without storage based on a number of different charge-discharge strategies provide evidence to support this hypothesis

Advanced techniques for determining long term compatibility of materials with propellants

A method for the prediction of propellant-material compatibility for periods of time up to ten years is presented. Advanced sensitive measurement techniques used in the prediction method are described. These include: neutron activation analysis, radioactive tracer technique, and atomic absorption spectroscopy with a graphite tube furnace sampler. The results of laboratory tests performed to verify the prediction method are presented

Watching disability: UK audience perceptions of the Paralympics, equality and social change

Despite the social change ambitions of Paralympic governing bodies and National broadcasters, there is still a shortage of evidence of where public social attitudes stand with respect to disabled bodies, and how these respond to the changing nature of Paralympic broadcasting. Based on a large-scale qualitative audience study across England and Wales, we aim to address this empirical gap. Our findings demonstrate how audiences internalise socially progressive ideas toward disability in line with Channel 4’s broadcasting strategy. These include a greater appreciation of Paralympic sport as an elite sporting event, the ‘normalisation’ of the technologically enhanced disabled body and an awareness of emerging cultural citizenship concerning disability rights-based discourses. Yet, at the same time, we evidence new, potentially damaging stigma hierarchies of disability preference framed by ‘ablenational’ sentiments. Findings are discussed within ongoing debates around mega sporting events, media audiences and disability Biopolitics

Efficacy of Antidepressant Drugs for the Treatment of Covid-19

In adult populations (18-65), does the administration of antidepressants, compared to not administering antidepressants, reduce the severity of the Covid-19 infection? Current treatment protocols for Covid-19 virus are still new and needing improvement. Discovering a new pharmacologic approach has been on the forefront of medical research since the beginning of the pandemic. The purpose of this paper is analyzing the efficacy of antidepressant drugs for reducing morbidity and mortality associated with Covid-19 virus. A literature search was conducted using Cinahl, Google Scholar, and UMaine Nursing Reference Center. The search words included covid, covid-19, pandemic, coronavirus, antidepressants, and SSRI. The inclusion criteria were all adults, male and female aged 18-65. The exclusion criteria included all viruses other than Covid-19, patients under 18, and patients over 65. Our search included 10 articles. Studies found that the administration of antidepressants has the potential to decrease the severity of the Covid-19 infection and improve outcomes. Specific antidepressants including fluoxetine and fluvoxamine were shown to decrease mortality in patients with Covid. Other studies suggest venlafaxine, mirtazapine, paroxetine, and escitalopram limited the need for intubation in those with serious covid infections. Promising research has emerged in the past few years suggesting there may be a link between antidepressant use and decreased symptoms of Covid-19. Some even suggest the use of certain antidepressants can decrease the risk of contracting the virus. Because Covid-19 is a relatively new disease, more research is needed to truly determine the applications antidepressants could have on patients who have contracted the virus