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ACSM/AMSSM CAQ Review Session Part 1, DermatologyDexter, W., Jaworski, C., DiFiori, J., Madden, C., Heiman, D., Bouchard, M., Wadsworth, T. 29 May 2013 (has links)
No description available.
Analyse dynamique, en champ proche et à résolution temporelle fine, de l'aérosol submicronique en situation urbaine sous influence industrielle / Dynamic analysis, in near field and with a finer temporal resolution, of a sub-micron aerosol in urban situation under industrial influenceZhang, Shouwen 14 October 2016 (has links)
La composition chimique des particules submicroniques (PM₁) a été suivie pendant plus d'un an ( juillet 2013- septembre 2014), à résolution temporelle fine (< 30 min.), à l'aide d'un analyseur ACSM pour la fraction non-réfractaire (organiques, sulfates, nitrates, ammoniums et chlorures) et d'un aethalomètre (carbone suie), complétés par une observation micro-météorologique. Une campagne intensive (juillet 2014) a enrichi le jeu de données avec le suivi de composés organiques volatils par analyse PTR-ToFMS. Le site de mesure est de type urbain de fond, sous l'influence d'une large zone industrielle et portuaire. La composition chimique des aérosols a été analysée de manière globale, saisonnière et selon 4 secteurs de vent. L'étude de la conversion SO₂-SO₄ dans le secteur industriel a montré que ce processus est favorisé à humidité relative élevée (> 70%), faible turbulence verticale (σw : 0-0.5 m sˉ¹) et faible vitesse de vent (0-2 m sˉ¹). À l'aide d'un modèle source récepteur PMF (Positive Matrix Factorization), trois sources primaires d'espèces organiques, liées au trafic, à la combustion de biomasse et à la cuisson domestique, ont été identifiées, ainsi qu'une source secondaire. Les analyses PMF saisonnière et par secteur, avec et sans contraintes, ont permis d'identifier 2 facteurs supplémentaires en secteurs marin et industriel. Quelques cas (brises de mer, épisodes de pollution et passages de bateaux) ont été étudiés, permettant dans le dernier cas d'extraire un spectre de masse moyen lié aux émissions des navires, ShOA (Ship-like Organic Aerosol). Ce facteur contribue en moyenne pour seulement 0.5% à la fraction organique particulaire mais jusqu'à plus de 90% sur de courtes périodes. / The chemical composition of submicron particles (PM₁) was monitored for over one year (July 2013-September 2014), at high temporal resolution (< 30 min), using an Aerosol Chemical Speciation Monitor (ACSM) for the non-refractory fraction (NR-PM₁ : organic, sulfate, nitrate, ammonium and chloride) and an aethalometer for black carbon (BC), together with micrometeorology parameters. An intensive campaign (July 2014) completed the data set including the monitoring of volatile organic compounds by PTR-TOFMS. The chosen site has an urban background typology, under the influence of a large area with industrial and harbor activities. The chemical composition of aerosols was analyzed globally, seasonally and using four wind sectors. A study of the SO₂-to-SO₄ conversion in the industrial sector has shown that this process is favored at high relative humidity (> 70%), low vertical turbulence (σw : 0-0.5 m sˉ¹) and low wind speed (0-2 m sˉ¹). Using PMF (Positive Matrix factorization) source receptor modeling, three primary sources of organic species, relatied to traffic, combustion of biomass and domestic cooking, have been identified, as well as a secondary source. The seasonal and sector PMF analyses, with and without constraints, helped to identify two additional factors in the marine and industrial sectors. Some specific events (sea breezes, high pollution events and nearby ship movements) were studied, allowing to extract an average mass spectrum associated with ship emissions for the latter, ShOA (Ship-like organic aerosol). This factor only contributes to 0.5% of the particulate organic fraction on average but up to more than 90% over short periods.
Variabilité multi-échelles de la météorologie et des aérosols en situation littorale sous influence industrielle / Multi-scale variability of meteorology and aerosols in littoral situation under industrial influenceGengembre, Cyril 19 June 2018 (has links)
Sur un site multi-influencé par des émissions urbaines et industrielles, l'analyse de la pollution aux aérosols, au voisinage des sources, requiert une connaissance multi-échelles de la dynamique atmosphérique. une campagne de mesure a été développée afin d'étudier la variabilité météorologique et micro-météorologique et l'évolution des particules, en particulier, submicroniques, sur une durée d'une année. Des oscillations de la concentration en aérosols, autour de la moyenne régionale, ont été identifiées le long du littoral dunkerquois, et attribuées aux phénomènes météorologiques locaux à proximité des industries. Des méthodes de reconnaissance et d'apprentissage supervisé, faisant appel aux mesures par anémomètre ultrasonique et aux profils verticaux du vent par lidar Doppler, ont été mises en œuvre pour établir la variabilité de phénomènes pertinents dans les événements de pollution de l'air : brise de mer, brouillard, front et tempête. L'analyse d'une base de données de six ans a permis de montrer que l’occurrence annuelle des brises de mer est corrélée à celle du nombre de journées anticycloniques. Par ailleurs, la fréquence annuelle des brouillards pourrait être liée à la concentration annuelle régionale en aérosols. L'analyse des covariances du vent a révélé deux situations contrastées, à faible et à fort flux turbulents. Le brouillard et la brise de mer, de faible flux, génèrent une pollution élevée aux PM₁, et sont le siège d'une forte concentration en aérosols organiques oxygénés (aérosols secondaires). Les situations à fort flux, favorisant les échanges verticaux, sont associées à une forte variabilité des sulfates particulaires. L'observation de longue durée a permis de mettre en évidence la construction d'épisodes de pollution particulaire, au cours de séquences de phénomènes météorologiques locaux, du fait des sources locales, mais aussi par incorporation de la pollution à plus grande échelle. / On a site that is multi-influenced by urban and industrial emissions, the analysis of aerosol pollution, in the vicinity of sources, requires a multi-scale knowledge of atmospheric dynamics. A measurement campaign was developed in order to study the meteorological and micro-meteorological variability and the evolution of particles, in particular, submicronic evolution, during a one-year period.Oscillations of the aerosol concentration around the regional average were identified along the Dunkirk coastline, and were attributed to the local meteorological phenomena close to the industries. Recognition and machine learning methods using measurements by an ultrasonic anemometer and vertical wind profiles by a Doppler lidar, were implemented to define the variability of relevant phenomena in air pollution events : sea breeze, fog, front and storm. A six-years database analysis has highlighted a correlation between the annual sea breeze occurrence and the annual number of anticyclonic days. Furthermore, the annual fog frequency could be connected with the annual regional concentration of aerosols. Analysis of wind covariance revealed two contrasting situations, low-level and high-level turbulent fluxes. The fog and the sea breeze, with low-level fluxes, generate a high PM₁ pollution and are in favor of a high organic oxygenated aerosols concentration (secondary aerosols). High-level fluxes situations, favoring vertical exchanges, are associated with a large variability of sulfate aerosols. The long-term observation, made it possible to highlight the development of episodes of particulate pollution during local weather phenomena, owing to the local emissions, but also by taking into account the larger-scale pollution.
Characterizing the emissions of fine particulate matter in the vicinity of a rail yardGalvis Remolina, Boris 12 January 2015 (has links)
Aerosol emissions from diesel combustion and other activities in rail yards can affect the health of urban populations. Fine particulate (PM[subscript 2.5]) concentrations near the Inman and Tilford rail yards in Atlanta, Georgia, are the highest measured in the state. The rail yard complex is surrounded by homes, schools, businesses and other industries. The impact of the aerosol emissions from these rail yards on local concentrations of PM[subscript 2.5] was quantified. Specifically, black carbon and PM[subscript 2.5] fuel-based emission factors from the rail yards were estimated by carbon balance using high time-resolution monitoring, a BC and PM[subscript 2.5] emissions inventory was estimated and dispersion modeling was applied to assess the impact of the rail yard activities on local air quality and the cost and benefits of upgrading locomotive engines with cleaner technologies was assessed. Further, baseline information that will allow a later evaluation of the improvement of local air quality as locomotives operating in the rail yards are upgraded was generated, and a composition profile of the rail yard aerosols was developed using chemical speciation techniques. These results found that activities from locomotives in the Inman and Tilford Rail yards lead to and an average emission factor of 6.0 ± 0.5 g of PM[subscript 2.5] per gallon of fuel and are responsible for increases in annual average concentrations of approximately 1.3 µg/m³ of PM[subscript 2.5] as far as 1 km from the perimeter of the rail yard complex. Approximately 11.7 tons of BC and 26 tons of PM[subscript 2.5] per year were emitted from the rail yards in 2011. The rail yards were found to be important sources of hydrocarbon-like organic aerosols (HOA) and black carbon from fuel (BCf). Upgrading the engines at the rail yards would decrease PM[subscript 2.5] emissions by about 9 t/year, reducing PM[subscript 2.5] concentrations around 0.5±0.1 µg/m³ as far as 1 km from the perimeter of the rail yard complex and producing monetized health benefits of approximately 24 million dollars per year.
CORONARY HEART DISEASE RISK STRATIFICATION IN FULL-TIME MIAMI VALLEY HOSPITAL EMPLOYEESStreng, Vicki K. 11 December 2006 (has links)
No description available.
A National Investigation of Pre-Activity Health Screening Procedures in Fitness Facilities: Perspectives from American College of Sports Medicine Certified Health Fitness SpecialistsCraig, Aaron C. 01 January 2014 (has links)
It is well established in the literature that the morbidity and mortality rates due to chronic diseases such as cardiovascular disease, cancer, hypertension, and diabetes in the U.S are alarmingly high. Likewise, there is ample data which demonstrates that participating in physical activity can help prevent and control many types of chronic diseases. Though the benefits outweigh the risks of participation in physical activity, the risks must be acknowledged. Published standards and guidelines in the health fitness field have been established to address operational practices of fitness facilities, increase safety of participants and mitigate these risks. The present study was a national investigation conducted to determine adherence to published standards and guidelines for self- and professionally-guided pre-activity health screening procedures (PHSP) across various settings (i.e., Hospital/Clinical, Community, Commercial, Corporate, University, Government). Additionally, this study obtained perspectives from study participants regarding familiarity with, importance of adherence to and legal liability associated with published standards and guidelines. As the American College of Sports Medicine (ACSM) is considered the gold standard in health and fitness, only ACSM's published standards and guidelines, specifically those related to pre-activity health screening, were included in the present study. A survey instrument was developed and validated to obtain the data for this study. The link for the web-based survey was sent from the ACSM's Certification Department to all ACSM Health Fitness Specialists (HFS) who lived in the US (n=9,433); a total of 1,246 (13.2%) responded to the survey. The survey instrument consisted of 54 questions including 14 participant related (i.e., Q1, Q3, Q34-Q45), 32 facility related (i.e., Q2, Q4-Q33, Q46), seven demographic related (Q47-Q53), and one open-ended question (Q54). Exclusion criteria removed any HFS who was not currently working part- or full-time in a fitness facility, which left 677 usable responses for data analysis. Special measures were taken to remove duplicate responses for any given facility which resulted in a lower number of usable responses (n=656) for those 32 questions. As hypothesized, the Hospital/Clinical setting had significantly (p<.006) higher percentages of fitness facilities (93%) which require new participants to complete a pre-activity screening device than all other settings (i.e., University (56%), Community (54%), Commercial(40%), and Government (67%)). Additionally, the Hospital/Clinical setting was also found to be significantly higher than Corporate relative to this same variable. Regarding the second research hypothesis, the Corporate setting was found to have significantly (p<.006) higher percentages (78%) of fitness facilities which require new participants to complete a pre-activity screening device than the Community setting. Twenty-six percent of respondents indicated they their facility conducted self-guided, 43% professionally guided, and 31% offered both self- and professionally-guided PHSP. High percentages of fitness facilities (73%) required new participants to complete a pre-activity screening device with 47% and 87% of these facilities requiring medical clearance for at-risk new participants for self- and professionally-guided screening procedures, respectively. At-risk was defined in the study as someone with known disease (e.g., cardiac, pulmonary or metabolic) or with signs/symptoms and/or risk factors associated with cardiac, pulmonary, or metabolic disease. Also, participants with other medical conditions (e.g., pregnancy, orthopedic injury) may be considered at- risk. The majority (86%) of facilities offered personal training and nearly all of these (99.6%) required clients of personal trainers to complete a pre-activity screening device. Additionally, 84% of these facilities required medical clearance for at-risk clients. Data regarding other aspects of PHSP for facilities were also obtained such as frequency of completion for participants, privacy, confidentiality, and security of information obtained, participant refusal to complete, and waivers for guests. Regarding their familiarity, 69% of respondents indicated that they were very familiar with the ACSM's Guidelines for Exercise Testing and Prescription (ACSM's GETP); however only 52% indicated they used the ACSM's GETP for development and implementation of their facility's PHSP. Of these facilities, the results regarding the inclusion of the GETP criteria on their screening device were: (a) 96%, 91%, 87% for known CV, pulmonary and metabolic disease, respectively, (b) 44-95% for each of the nine signs/symptoms with dizziness/syncope the highest (95%) and intermittent claudication the lowest (44%), and (c) 64%- 99% for each of the nine CV risk factors with smoking the highest (99%) and high-density lipoprotein the lowest (64%). Although 52% of respondents reported more than adequate academic preparation, 70% reported being very confident in conducting professionally-guided pre-activity health screening procedures and that adherence to published standards and guidelines was very important. However, only 28% of respondents reported more than adequate academic preparation regarding legal implications involving PHSP. Other data from the HFSs regarding PHSP were also obtained such as their perspectives of the importance to management to adhere to and familiarity with published standards and guidelines as well as their knowledge of legal issues related to PHSP. In the open-ended question, respondents provided comments and challenges (n=509) that they encountered while conducting PHSP. These data were analyzed, coded and then categorized into three major themes: 1) medical clearance related issues, 2) administrative/procedural related issues, 3) member related issues. Compared to previous research, adherence to published standards and guidelines, as evidenced by the percentage of facilities which require new participants and clients of personal trainers to complete a pre-activity screening device, seems to be generally increasing. Additionally, relative to the requirement of medical clearance for personal training clients also seems to demonstrate an upward trend. However, the requirement of medical clearance for at-risk new participants remains about the same as previous studies (ranging from 49%-82% of the facilities) and the current study (47% for self-guided and 87% for professionally-guided). For facilities that were not conducting PHSP (27%), the major reasons why were reinforced by the comments to the open-ended question and were similar to those found in a previous study that investigated the same. The findings from this study indicated that there are areas that may need to be addressed within the profession to help increase adherence to published standards and guidelines especially in Community, Commercial, University, and Government settings. For example, these facilities might need a more simplified approach and additional guidance from the ACSM for more effectively and efficiently conducting PHSP. Additionally, academic programs could contribute by more comprehensively integrating PHSP into courses and practical learning opportunities for students. Given the importance of conducting PHSP, future research in PHSP focused on issues specific to individual settings may help establish the framework and provide direction for stakeholders to address this relevant issue in the field.
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