710 research outputs found

    Book Reviews

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    Book Reviews

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    Book Reviews

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    Part 1: Brackish Groundwater Desalination Technical Report

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    This Brackish Groundwater Desalination Technical Report examines the legal frameworks that affect desalination in Texas. The goal of this report is to provide insight into the legal and regulatory barriers, challenges, and opportunities for these technologies to go online. Each desalination implementation site has to find ways of complying with various laws and regulations. The information in this Report comes from the study of brackish groundwater desalination facilities currently operating in Texas, as well as extensive research into available literature and documents from various agencies. While there is no updated “one-stop-shop” resource that provides detailed information on all the necessary permits to build, operate, and maintain such facilities, this Technical Report aims to compile the existing, available information in an organized and accessible fashion. The Brackish Groundwater Desalination Technical Report is the first of three reports that make up the work product of a project undertaken by students at Texas A&M University School of Law in a select capstone seminar. These reports examine regulations surrounding desalination and water recycling. The companion report entitled Water Recycling Technical Report highlights building, operating, and monitoring requirements for water recycling facilities in Texas. Finally, the Case Study Report expands on regulations in San Antonio and El Paso where these water alternatives are in place

    Part 3: Case Study Appendices to the Technical Reports

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    This Case Study Appendix to the Technical Reports expands on regulations in San Antonio and El Paso where these water alternatives are in place. The goal of this report is to provide insight into the legal and regulatory barriers, challenges, and opportunities for these technologies to go online. Each desalination and water recycling faciality implementation site must comply with various laws and regulations. The information in these Case Studies comes from the study of brackish groundwater desalination and water recycling facilities currently operating in Texas. While there is no updated “one-stop-shop” resource where a municipal leader can find a list of all the necessary permits to build, operate, and maintain such facilities, this Technical Report aims to compile the existing, available information in an organized and accessible fashion. The Desalination Technical report is the third in a series of three reports which make up the Project. These reports examine regulations surrounding desalination and water recycling. The companion reports generally highlight building, operating, and monitoring requirements for water recycling facilities in Texas

    Part 2: Water Recycling Technical Report for Direct Non-Potable Use

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    This Water Recycling Technical Report examines the legal frameworks that affect water recycling in Texas. The goal of this report is to provide insight into the legal and regulatory barriers, challenges, and opportunities for these technologies to go online. Each water recycling implementation site has to find ways of complying with various laws and regulations. The information in this Report comes from the study of water recycling facilities currently operating in Texas, as well as extensive research into available literature and documents from various agencies. While there is no updated “one-stop-shop” resource that provides detailed information on all the necessary permits to build, operate, and maintain such facilities, this Technical Report aims to compile the existing, available information in an organized and accessible fashion. The Water Recycling Technical Report is the second of three reports that make up the work product of a project undertaken by students at Texas A&M University School of Law in a select capstone seminar. These reports examine regulations surrounding desalination and water recycling. The companion report entitled Brackish Groundwater Desalination Technical Report highlights building, operating, and monitoring requirements for desalination facilities in Texas. Finally, the Case Study Report expands on regulations in San Antonio and El Paso where these water alternatives are in place

    Measuring perceived exercise capability and investigating its relationship with childhood obesity: a feasibility study.

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    BACKGROUND/OBJECTIVES: According to the COM-B ('Capability', 'Opportunity', 'Motivation' and 'Behaviour') model of behaviour, three factors are essential for behaviour to occur: capability, opportunity and motivation. Obese children are less likely to feel capable of exercising. The implementation of a new methodological approach to investigate the relationship between perceived exercise capability (PEC) and childhood obesity was conducted, which involved creating a new instrument, and demonstrating how it can be used to measure obesity intervention outcomes. SUBJECTS/METHODS: A questionnaire aiming to measure perceived exercise capability, opportunity and motivation was systematically constructed using the COM-B model and administered to 71 obese children (aged 9-17 years (12.24±0.2.01), body mass index (BMI) standard deviation scores (SDS) 2.80±0.660) at a weight-management camp in northern England. Scale validity and reliability was assessed. Relationships between PEC, as measured by the questionnaire, and BMI SDS were investigated for the children at the weight-management camp, and for 45 Spanish schoolchildren (aged 9-13 years, (10.52±1.23), BMI SDS 0.80±0.99). A pilot study, demonstrating how the questionnaire can be used to measure the effectiveness of an intervention aiming to bring about improved PEC for weight-management camp attendees, was conducted. No participants withdrew from these studies. RESULTS: The questionnaire domain (exercise capability, opportunity and motivation) composite scales were found to have adequate internal consistency (a=0.712-0.796) and construct validity (χ(2)/degrees of freedom=1.55, root mean square error of approximation=0.072, comparative fit index=0.92). Linear regression revealed that low PEC was associated with higher baseline BMI SDS for both UK (b=-0.289, P=0.010) and Spanish (b=-0.446, P=0.047) participants. Pilot study findings provide preliminary evidence for PEC improvements through intervention being achievable, and measurable using the questionnaire. CONCLUSIONS: Evidence is presented for reliability and validity of the questionnaire, and for feasibility of its use in the context of a childhood obesity intervention. Future research could investigate the link between PEC and childhood obesity further

    Ideographic Modeling and Data Visualization of Sleep, Affect, and Psychotic Symptoms: A Case Example

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    Background: 1. Psychotic disorders are heterogeneous. 2. Current diagnostic categorizations are unable to capture individuals’ unique symptom experiences. 3. Newly-developed ideographic analyses and data visualization tools may be useful in assessing individuals’ symptom experiences and stimulating data informed care.https://knowledgeconnection.mainehealth.org/lambrew-retreat-2021/1019/thumbnail.jp

    The effect of discretionary snack consumption on overall energy intake, weight status and diet quality: A systematic review

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    The consumption frequency and portion size of discretionary snacks are thought to contribute to a greater food intake and risk of overweight or obesity in the developed world but evidence from epidemiological studies is inconclusive. To investigate this, we systematically evaluated evidence on the effects of discretionary snack consumption on weight status, energy intake, and diet quality. Articles involving discretionary snacks reported against the outcome measures of any primary, peer-reviewed study using human participants from free-living conditions for all age groups were included. A total of 14,780 titles were identified and 40 eligible publications were identified. Three key outcomes were reported: weight status (n = 35), energy intake (n = 11), and diet quality (n = 3). Increased discretionary snack consumption may contribute modestly to energy intake, however, there is a lack of consistent associations with increased weight/BMI. Although cross-sectional analyses offered conflicting findings, longitudinal studies in adults showed a consistent positive relationship between discretionary snack intake and increasing weight or body mass index. Given that experimental findings suggest reducing the size of discretionary snacks could lead to decreased consumption and subsequent energy intake, food policy makers and manufacturers may find it valuable to consider altering the portion and/or packaging size of discretionary snacks

    Assessing urban methane emissions using column-observing portable Fourier transform infrared (FTIR) spectrometers and a novel Bayesian inversion framework

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    Cities represent a large and concentrated portion of global greenhouse gas emissions, including methane. Quantifying methane emissions from urban areas is difficult, and inventories made using bottom-up accounting methods often differ greatly from top-down estimates generated from atmospheric observations. Emissions from leaks in natural gas infrastructure are difficult to predict and are therefore poorly constrained in bottom-up inventories. Natural gas infrastructure leaks and emissions from end uses can be spread throughout the city, and this diffuse source can represent a significant fraction of a city\u27s total emissions. We investigated diffuse methane emissions of the city of Indianapolis, USA, during a field campaign in May 2016. A network of five portable solar-tracking Fourier transform infrared (FTIR) spectrometers was deployed throughout the city. These instruments measure the mole fraction of methane in a total column of air, giving them sensitivity to larger areas of the city than in situ sensors at the surface. We present an innovative inversion method to link these total column concentrations to surface fluxes. This method combines a Lagrangian transport model with a Bayesian inversion framework to estimate surface emissions and their uncertainties, together with determining the concentrations of methane in the air flowing into the city. Variations exceeding 10 ppb were observed in the inflowing air on a typical day, which is somewhat larger than the enhancements due to urban emissions (<5 ppb downwind of the city). We found diffuse methane emissions of 73(±22) mol s−1, which is about 50 % of the urban total and 68 % higher than estimated from bottom-up methods, although it is somewhat smaller than estimates from studies using tower and aircraft observations. The measurement and model techniques developed here address many of the challenges present when quantifying urban greenhouse gas emissions and will help in the design of future measurement schemes in other cities
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