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https://www.readbyqxmd.com/read/29165170/evaluating-prevalence-and-risk-factors-of-building-related-symptoms-among-office-workers-seasonal-characteristics-of-symptoms-and-psychosocial-and-physical-environmental-factors
#1
Kenichi Azuma, Koichi Ikeda, Naoki Kagi, U Yanagi, Haruki Osawa
BACKGROUND: Psychosocial and environmental factors at the workplace play a significant role in building-related symptoms (BRSs). Environmental factors change during summer cooling and winter heating using air-conditioning systems. Thus, significant risk factors in each season need to be clarified. METHODS: A nationwide cross-sectional study was conducted during summer in Japan and seasonal differences between summer and winter were evaluated. Self-administered questionnaires were distributed to 489 offices...
April 12, 2017: Environmental Health and Preventive Medicine
https://www.readbyqxmd.com/read/29164632/characterization-of-nanodot-optically-stimulated-luminescence-detectors-and-high-sensitivity-mcp-n-thermoluminescent-detectors-in-the-40-300-kvp-energy-range
#2
Yannick Poirier, Svetlana Kuznetsova, Jose Eduardo Villarreal-Barajas
PURPOSE: To investigate empirically the energy dependence of the detector response of two in-vivo luminescence detectors, LiF:Mg,Cu,P (MCP-N) high-sensitivity TLDs and Al2 O3 :C OSLDs, in the 40-300-kVp energy range in the context of in-vivo surface dose measurement. As these detectors become more prevalent in clinical and pre-clinical in-vivo measurements, knowledge of the variation of the empirical dependence of the measured response of these detectors across a wide spectrum of beam qualities is important...
November 22, 2017: Medical Physics
https://www.readbyqxmd.com/read/29164628/technical-note-response-time-evolution-of-xr-qa2-gafchromic-tm-film-models
#3
Saad Aldelaijan, Nada Tomic, Pavlos Papaconstadopoulos, James Schneider, Jan Seuntjens, Shelley Shih, David Lewis, Slobodan Devic
PURPOSE: To evaluate the response of the newest XR-QA2 GafChromic(™) film model in terms of post-exposure signal growth and energy response in comparison with the older XR-QA (Version 2) model. METHODS: Pieces of film were irradiated to air kerma in air values up to 12 cGy with several beam qualities (5.3-8.25 mm Al) commonly used for CT scanning. Film response was scored in terms of net reflectance from scanned film images at various points in time post-irradiation ranging from 1 to 7 days and 5 months post exposure...
November 22, 2017: Medical Physics
https://www.readbyqxmd.com/read/29164231/storage-of-porcine-cornea-in-an-innovative-bioreactor
#4
Damien Guindolet, Emmanuel Crouzet, Zhiguo He, Pascal Herbepin, Clotilde Jumelle, Chantal Perrache, Jean Marc Dumollard, Fabien Forest, Michel Peoc'h, Philippe Gain, Eric Gabison, Gilles Thuret
Purpose: To quantify cell survival and tissue structure preservation of porcine cornea stored in a bioreactor (BR) that recreates a transcorneal pressure gradient equivalent to intraocular pressure (IOP) and renews the medium. Methods: A BR comprising endothelial and epithelial chambers was machined in a biocompatible material. The porcine cornea, securely held, separated the chambers. Medium flow and pressure inside the endothelial chamber were maintained by a peristaltic pump...
November 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29163659/automated-quality-control-of-ultrasound-based-on-in-air-reverberation-patterns
#5
Pepijn van Horssen, Arnold Schilham, Dennis Dickerscheid, Niels van der Werf, Han Keijzers, Ronald van Almere, Joost Kuijer, Rob Peters, Mark Hofman
Ultrasound image degradation originates primarily from transducer defects and potentially undermines reliable image interpretation. Systematic quantitative quality control is often neglected due to the limited resources available for this task. We propose a quantitative quality control based on in-air reverberation images. These images serve as an initial indication of image degradation. They are easily generated for any (curvi-)linear transducer independent of the level of expertise of the operator. Automated analysis is presented to extract quality parameters based on the in-air reverberation pattern...
November 2017: Ultrasound: Journal of the British Medical Ultrasound Society
https://www.readbyqxmd.com/read/29162976/linking-air-quality-and-human-health-effects-models-an-application-to-the-los-angeles-air-basin
#6
Devoun R Stewart, Emily Saunders, Roberto A Perea, Rosa Fitzgerald, David E Campbell, William R Stockwell
Proposed emission control strategies for reducing ozone and particulate matter are evaluated better when air quality and health effects models are used together. The Community Multiscale Air Quality (CMAQ) model is the US Environmental Protection Agency's model for determining public policy and forecasting air quality. CMAQ was used to forecast air quality changes due to several emission control strategies that could be implemented between 2008 and 2030 for the South Coast Air Basin that includes Los Angeles...
2017: Environmental Health Insights
https://www.readbyqxmd.com/read/29161900/asthma-disparity-photovoice-the-discourses-of-black-adolescent-and-public-health-policymakers
#7
Robin Andrew Evans-Agnew
BACKGROUND: Policies in U.S. public schools that address asthma management for Black adolescents may not sufficiently transform sociocultural determinants of disparities. A critical analysis of public health policy maker and adolescent discourses on asthma management using an ecological framework could inform policy development. This study describes the discourses of asthma management disparities of school and other public health policymakers and Black adolescents with asthma during a statewide asthma planning activity...
February 1, 2017: Health Promotion Practice
https://www.readbyqxmd.com/read/29161803/modeling-the-effects-of-pollutant-emissions-from-large-industrial-complexes-on-benzene-toluene-and-xylene-btx-concentrations-in-urban-areas
#8
Jin-Hee Bang, Inbo Oh, Soontae Kim, Seunghee You, Yangho Kim, Ho-Jang Kwon, Geun-Bae Kim
This study utilized the Community Multi-scale Air Quality (CMAQ) model to simulate the spatial distribution of benzene, toluene, and xylene (BTX) concentrations in Ulsan metropolitan region (UMR), where large national industrial complexes (IC) are located. Through controlling the pollutant emissions in major IC, this study has performed a quantitative analysis on the influence of pollutant emissions from the IC on the BTX concentrations in surrounding urban areas. The seasonal modeling results indicated that the average BTX concentrations were high around the petrochemical complexes, with higher concentrations in the surrounding urban areas during the summer...
November 20, 2017: Environmental Health and Toxicology
https://www.readbyqxmd.com/read/29160536/use-of-the-ishikawa-diagram-in-a-case-control-analysis-to-assess-the-causes-of-a-diffuse-lamellar-keratitis-outbreak
#9
Luis Henrique Lira, Flávio E Hirai, Marivaldo Oliveira, Waldir Portellinha, Eliane Mayumi Nakano
PURPOSE: To identify the causes of a diffuse lamellar keratitis (DLK) outbreak using a systematic search tool in a case-control analysis. METHODS: An Ishikawa diagram was used to guide physicians to determine the potential risk factors involved in this outbreak. Coherence between the occurrences and each possible cause listed in the diagram was verified, and the total number of eyes at risk was used to calculate the proportion of affected eyes. Multivariate analysis was performed using logistic regression to determine the independent effect of the risk factors, after controlling for confounders and test interactions...
September 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/29160489/cross-cultural-adaptation-of-the-filial-responsibility-protocol-for-use-in-brazil
#10
Marines Aires, Fernanda Laís Fengler Dal Pizzol, Duane Mocellin, Idiane Rosset, Eliane Pinheiro de Morais, Lisiane Manganelli Girardi Paskulin
OBJECTIVE: To carry out a cross-cultural adaptation of the Filial Responsibility protocol for use in Brazil with adult child caregivers for elderly parents. METHOD: A methodological study that included the steps of initial translation, synthesis of translations, back-translation, committee of experts, pre-test, evaluation of psychometric measures and submission to authors. The protocol comprises a qualitative step, closed questions and seven scales: Filial Expectation, Subsidiary Compassion, Caregiver burden, Life Satisfaction, Personal Well-being and Quality of Relationships...
November 2017: Revista Brasileira de Enfermagem
https://www.readbyqxmd.com/read/29159807/experimental-investigation-of-gafchromic-%C3%A2-ebt3-intrinsic-energy-dependence-with-kilovoltage-x-rays-137-cs-and-60-co
#11
Cliff G Hammer, Benjamin Saul Rosen, Jessica M Fagerstrom, Wesley S Culberson, Larry A DeWerd
PURPOSE: To determine experimentally the intrinsic energy response, kbq , of EBT3 GafChromic(®) radiochromic film with kilovoltage x-rays,(137) Cs, and (60) Co in therapeutic and diagnostic dose ranges through direct measurement with an accompanying mathematical approach to describe the physical processes involved. METHODS: EBT3 film was irradiated to known doses using (60) Co, (137) Cs, and 13 NIST-matched kilovoltage x-ray beams. Seven dose levels, ranging from 57 to 7002 mGy, were chosen for this work...
November 21, 2017: Medical Physics
https://www.readbyqxmd.com/read/29159764/establishing-iaea-trs-457-diagnostic-x-ray-beam-qualities-at-the-australian-primary-standard-dosimetry-laboratory
#12
Kam L Lee, Duncan Butler, Tracy Bailey
This paper reports the process and findings in establishing the diagnostic beam qualities for the calibration of diagnostic dose meters in the Australian primary standard dosimetry laboratory at the Australian Radiation Protection and Nuclear Safety Agency, ARPANSA. A novel iterative method to achieve the RQR beam quality requirements described by IEC 61267 is presented. The correction factors for the primary standard free-air chamber and their uncertainties are reported. The calibration procedure with detailed uncertainty budget of a typical diagnostic ionisation chamber (model PTW 34060) is reported...
November 20, 2017: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/29159437/exploring-the-potential-relationship-between-indoor-air-quality-and-the-concentration-of-airborne-culturable-fungi-a-combined-experimental-and-neural-network-modeling-study
#13
Zhijian Liu, Kewei Cheng, Hao Li, Guoqing Cao, Di Wu, Yunjie Shi
Indoor airborne culturable fungi exposure has been closely linked to occupants' health. However, conventional measurement of indoor airborne fungal concentration is complicated and usually requires around one week for fungi incubation in laboratory. To provide an ultra-fast solution, here, for the first time, a knowledge-based machine learning model is developed with the inputs of indoor air quality data for estimating the concentration of indoor airborne culturable fungi. To construct a database for statistical analysis and model training, 249 data groups of air quality indicators (concentration of indoor airborne culturable fungi, indoor/outdoor PM2...
November 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29158200/effects-of-diesel-exhaust-derived-secondary-organic-aerosol-soa-on-oocytes-potential-risks-to-meiotic-maturation
#14
Osamu Udagawa, Akiko Furuyama, Koji Imai, Yuji Fujitani, Seishiro Hirano
Particulate air pollution (PM 2.5) is a worldwide concern. Growing epidemiological evidence has shown pathophysiological effects of PM 2.5,not only on cardiovascular system but also on reproductive performance. The composition and physicochemical properties of PM 2.5 vary depending on the emission sources, climate conditions, and complex chemical reactions in the air. These factors make it difficult to understand the cause and mechanistic details of the adverse health effects of PM 2.5. Here, we show potential impacts of PM 2...
November 17, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/29157969/incorporating-long-term-satellite-based-aerosol-optical-depth-localized-land-use-data-and-meteorological-variables-to-estimate-ground-level-pm2-5-concentrations-in-taiwan-from-2005-to-2015
#15
Chau-Ren Jung, Bing-Fang Hwang, Wei-Ting Chen
Satellite-based aerosol optical depth (AOD) is now comprehensively applied to estimate ground-level concentrations of fine particulate matter (PM2.5). This study aimed to construct the AOD-PM2.5 estimation models over Taiwan. The AOD-PM2.5 modeling in Taiwan island is challenging owing to heterogeneous land use, complex topography, and humid tropical to subtropical climate conditions with frequent cloud cover and prolonged rainy season. The AOD retrievals from the MODerate resolution Imaging Spectroradiometer (MODIS) onboard the Terra and Aqua satellites were combined with the meteorological variables from reanalysis data and high resolution localized land use variables to estimate PM2...
November 17, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29157874/air-travel-and-postoperative-lymphedema-a-systematic-review
#16
REVIEW
Michael Co, Judy Ng, Ava Kwong
Lymphedema is not uncommon after axillary dissection for breast cancer. Improved survival of patients with breast cancer from advances in adjuvant therapy has resulted in increased awareness of the quality of life for long-term survivors. Air travel has been postulated as 1 of the risk factors of lymphedema exacerbation. In the present systematic review, we sought to critically evaluate the current data on this topic. The present study was registered in the Research Registry. A systematic review of lymphedema and air travel was performed using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses protocol...
October 19, 2017: Clinical Breast Cancer
https://www.readbyqxmd.com/read/29157250/ozone-exposure-is-associated-with-acute-changes-in-inflammation-fibrinolysis-and-endothelial-cell-function-in-coronary-artery-disease-patients
#17
Jaime E Mirowsky, Martha Sue Carraway, Radhika Dhingra, Haiyan Tong, Lucas Neas, David Diaz-Sanchez, Wayne Cascio, Martin Case, James Crooks, Elizabeth R Hauser, Z Elaine Dowdy, William E Kraus, Robert B Devlin
BACKGROUND: Air pollution is a major risk factor for cardiovascular disease, of which ozone is a major contributor. Several studies have found associations between ozone and cardiovascular morbidity, but the results have been inconclusive. We investigated associations between ozone and changes across biological pathways associated with cardiovascular disease. METHODS: Using a panel study design, 13 participants with coronary artery disease were assessed for markers of systemic inflammation, heart rate variability and repolarization, lipids, blood pressure, and endothelial function...
November 21, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/29157177/critical-and-systematic-evaluation-of-data-for-estimating-human-exposures-to-2-4-dichlorophenoxyacetic-acid-2-4-d-quality-and-generalizability
#18
Judy S LaKind, Carol J Burns, Daniel Q Naiman, Cian O'Mahony, Giulia Vilone, Annette J Burns, Joshua S Naiman
The herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) has been commercially available since the 1940's. Despite decades of data on 2,4-D in food, air, soil, and water, as well as in humans, the quality the quality of these data has not been comprehensively evaluated. Using selected elements of the Biomonitoring, Environmental Epidemiology, and Short-lived Chemicals (BEES-C) instrument (temporal variability, avoidance of sample contamination, analyte stability, and urinary methods of matrix adjustment), the quality of 156 publications of environmental- and biomonitoring-based 2,4-D data was examined...
November 20, 2017: Journal of Toxicology and Environmental Health. Part B, Critical Reviews
https://www.readbyqxmd.com/read/29157155/work-environment-and-occupational-risk-assessment-for-small-animal-portuguese-veterinary-activities
#19
Angela C Macedo, Vânia T Mota, João M Tavares, Osvaldo L Machado, Francisco X Malcata, Marinela P Cristo, Olga N Mayan
The professional work of small animal veterinary staff encompasses a wide diversity of demanding tasks. This has prompted a number of studies covering physical, chemical, biological, ergonomic or psychological hazards, as well as their health effects upon veterinary workers. However, such results were obtained from self-reported surveys (via paper or online). This study reports the identification of potential hazards and provides a risk assessment of 15 veterinary clinics based on data from walk-through surveys, interviews with workers, and quantification of indoor air quality parameters including concentration of volatile organic compounds (total, isoflurane and glutaraldehyde)...
November 20, 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/29156645/the-short-term-effects-of-visibility-and-haze-on-mortality-in-a-coastal-city-of-china-a-time-series-study
#20
Shaohua Gu, Jun Yang, Alistair Woodward, Mengmeng Li, Tianfeng He, Aihong Wang, Beibei Lu, Xiaobo Liu, Guozhang Xu, Qiyong Liu
Few studies have been conducted to investigate the acute health effects of visibility and haze, which may be regarded as proxy indicators of ambient air pollution. We used a distributed lag non-linear model (DLNM) combined with quasi-Poisson regression to estimate the relationship between visibility, haze and mortality in Ningbo, a coastal city of China. We found that the mortality risk of visibility was statistically significant only on the current day, while the risk of haze and PM10 peaked on the second day and could last for three days...
November 20, 2017: International Journal of Environmental Research and Public Health
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