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https://www.readbyqxmd.com/read/28632062/skeleton-sled-velocity-profiles-a-novel-approach-to-understand-critical-aspects-of-the-elite-athletes-start-phases
#1
Steffi L Colyer, Keith A Stokes, James L J Bilzon, Aki I T Salo
The development of velocity across the skeleton start is critical to performance, yet poorly understood. We aimed to understand which components of the sled velocity profile determine performance and how physical abilities influence these components. Thirteen well-trained skeleton athletes (>85% of athletes in the country) performed dry-land push-starts alongside countermovement jump and sprint tests at multiple time-points. A magnet encoder attached to the sled wheel provided velocity profiles, which were characterised using novel performance descriptors...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28629362/long-term-exposure-to-ambient-ultrafine-particles-and-respiratory-disease-incidence-in-in-toronto-canada-a-cohort-study
#2
Scott Weichenthal, Li Bai, Marianne Hatzopoulou, Keith Van Ryswyk, Jeffrey C Kwong, Michael Jerrett, Aaron van Donkelaar, Randall V Martin, Richard T Burnett, Hong Lu, Hong Chen
BACKGROUND: Little is known about the long-term health effects of ambient ultrafine particles (<0.1 μm) (UFPs) including their association with respiratory disease incidence. In this study, we examined the relationship between long-term exposure to ambient UFPs and the incidence of lung cancer, adult-onset asthma, and chronic obstructive pulmonary disease (COPD). METHODS: Our study cohort included approximately 1.1 million adults who resided in Toronto, Canada and who were followed for disease incidence between 1996 and 2012...
June 19, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28625107/associations-between-omega-3-fatty-acids-and-25-oh-d-and-psychological-distress-among-inuit-in-canada
#3
Hans-Ragnar Skogli, Dominique Geoffroy, Hope A Weiler, Grethe S Tell, Laurence J Kirmayer, Grace M Egeland
BACKGROUND: Inuit in Canada have experienced dietary changes over recent generations, but how this relates to psychological distress has not been investigated. OBJECTIVE: To evaluate how nutritional biomarkers are related to psychological distress. DESIGN: A total of 36 communities in northern Canada participated in the International Polar Year Inuit Health Survey (2007-2008). Of 2796 households, 1901 (68%) participated; 1699 Inuit adults gave blood samples for biomarker analysis and answered the Kessler 6-item psychological distress questionnaire (K6)...
2017: International Journal of Circumpolar Health
https://www.readbyqxmd.com/read/28624635/identification-and-interaction-of-multiple-stressors-in-central-european-lowland-rivers
#4
Jan U Lemm, Christian K Feld
Interactions of multiple stressors in lotic systems have received growing interest and have been analysed in a growing number of studies using experiment and survey data. In this study, we present a protocol to identify, display and analyse stressors of rivers and their interactions (additive, synergistic or antagonistic). We used a dataset of 125 samples of central European lowland rivers comprising hydromorphological, physico-chemical and land use stressor and pressure variables as well as benthic macroinvertebrate traits as biological response variables...
June 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28623827/changes-in-aquatic-microbial-responses-to-c-substrates-with-stream-water-and-sediment-quality-related-to-land-use-pressures
#5
Marc I Stutter, Jonathan Cains
The degradation of aquatic ecosystems by multiply-acting stressors is a key threat requiring new approaches to identify impairment processes and restoration targets. Heterotrophic respiration of C-substrates can be an integrative indicator of how aquatic ecosystems respond to pollution. We utilised sixteen C-substrates (simple metabolites to dissolved organic matter (DOM)) to characterise substrate induced respiration (SIR) for sediments from sixteen NE Scotland streams covering a range of land use-related pollution pressures...
June 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/28616479/human-q-fever-incidence-is-associated-to-spatiotemporal-environmental-conditions
#6
J P G Van Leuken, A N Swart, J Brandsma, W Terink, J Van de Kassteele, P Droogers, F Sauter, A H Havelaar, W Van der Hoek
Airborne pathogenic transmission from sources to humans is characterised by atmospheric dispersion and influence of environmental conditions on deposition and reaerosolisation. We applied a One Health approach using human, veterinary and environmental data regarding the 2009 epidemic in The Netherlands, and investigated whether observed human Q fever incidence rates were correlated to environmental risk factors. We identified 158 putative sources (dairy goat and sheep farms) and included 2339 human cases. We performed a high-resolution (1 × 1 km) zero-inflated regression analysis to predict incidence rates by Coxiella burnetii concentration (using an atmospheric dispersion model and meteorological data), and environmental factors - including vegetation density, soil moisture, soil erosion sensitivity, and land use data - at a yearly and monthly time-resolution...
December 2016: One Health
https://www.readbyqxmd.com/read/28616164/elevational-gradient-and-human-effects-on-butterfly-species-richness-in-the-french-alps
#7
Arnaud Gallou, Yann Baillet, Gentile Francesco Ficetola, Laurence Després
We examined how butterfly species richness is affected by human impact and elevation, and how species ranges are distributed along the elevational gradient (200-2700 m) in the Isère Department (French Alps). A total of 35,724 butterfly observations gathered in summer (May-September) between 1995 and 2015 were analyzed. The number of estimated species per 100-m elevational band was fitted to the elevational gradient using a generalized additive model. Estimations were also performed on a 500 m × 500 m grid at low altitude (200-500 m) to test for the human impact on species richness using generalized least squares regression models...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28601702/an-assessment-of-the-association-between-asset-ownership-and-intimate-partner-violence-in-pakistan
#8
N S Murshid
OBJECTIVE: This study assessed the association between women's reports of asset ownership (home and land) and experience of three types of intimate partner violence (IPV): physical violence, emotional violence, and husbands' controlling behaviors. STUDY DESIGN: Population-based secondary analysis. METHOD: This cross-sectional study used data from a sub-sample of 658 women from the nationally representative Pakistan Demographic and Health Survey 2012-13...
June 8, 2017: Public Health
https://www.readbyqxmd.com/read/28600936/a-novel-technique-for-establishing-soil-topographic-index-thresholds-in-defining-hydrologically-sensitive-areas-in-landscapes
#9
Subhasis Giri, Zeyuan Qiu, Zhen Zhang
Hydrologically sensitive areas (HSAs) are useful for analyzing a watershed. However, correct delineation of HSAs is critical for conducting such analysis. Scientifically defensible methods for delineating HSAs are lacking. The objectives of this study are to identify threshold soil topographic indices (STIs) based on the relationship between the observed soil moisture and the calculated STI in two sites using a trellis plot approach, and validate the identified threshold STIs in delineating HSAs in 15 watersheds in North Central New Jersey based on a linear mixed modeling of the relationship between land use and water quality at the watershed and HSA scales...
June 7, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28599689/aspartic-acid-racemization-with-correlation-to-age-aforensic-perspective
#10
Qudsia Hassan, Allah Rakha, M Zahid Bashir
OBJECTIVE: To estimate age through aspartic acid racemization of human dentin for forensic analysis, and to calculate the margin of error between chronological age and estimated age by racemization method. STUDY DESIGN: Cross-sectional comparative study. PLACE AND DURATION OF STUDY: Dental Outpatients' Department, Ziauddin Hospital, Karachi, from 2011 to 2014. METHODOLOGY: Patients from dental orthodontics department were selected...
May 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28599372/a-hybrid-machine-learning-model-to-predict-and-visualize-nitrate-concentration-throughout-the-central-valley-aquifer-california-usa
#11
Katherine M Ransom, Bernard T Nolan, Jonathan A Traum, Claudia C Faunt, Andrew M Bell, Jo Ann M Gronberg, David C Wheeler, Celia Z Rosecrans, Bryant Jurgens, Gregory E Schwarz, Kenneth Belitz, Sandra M Eberts, George Kourakos, Thomas Harter
Intense demand for water in the Central Valley of California and related increases in groundwater nitrate concentration threaten the sustainability of the groundwater resource. To assess contamination risk in the region, we developed a hybrid, non-linear, machine learning model within a statistical learning framework to predict nitrate contamination of groundwater to depths of approximately 500m below ground surface. A database of 145 predictor variables representing well characteristics, historical and current field and landscape-scale nitrogen mass balances, historical and current land use, oxidation/reduction conditions, groundwater flow, climate, soil characteristics, depth to groundwater, and groundwater age were assigned to over 6000 private supply and public supply wells measured previously for nitrate and located throughout the study area...
June 5, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28599003/measurement-agreement-between-a-newly-developed-sensing-insole-and-traditional-laboratory-based-method-for-footstrike-pattern-detection-in-runners
#12
Roy T H Cheung, Winko W An, Ivan P H Au, Janet H Zhang, Zoe Y S Chan, Alfred Man, Fannie O Y Lau, Melody K Y Lam, K K Lau, C Y Leung, N W Tsang, Louis K Y Sze, Gilbert W K Lam
This study introduced a novel but simple method to continuously measure footstrike patterns in runners using inexpensive force sensors. Two force sensing resistors were firmly affixed at the heel and second toe of both insoles to collect the time signal of foot contact. A total of 109 healthy young adults (42 males and 67 females) were recruited in this study. They ran on an instrumented treadmill at 0°, +10°, and -10° inclinations and attempted rearfoot, midfoot, and forefoot landings using real time visual biofeedback...
2017: PloS One
https://www.readbyqxmd.com/read/28595043/the-association-between-the-incidence-of-postmenopausal-breast-cancer-and-concentrations-at-street-level-of-nitrogen-dioxide-and-ultrafine-particles
#13
Mark S Goldberg, France Labrèche, Scott Weichenthal, Eric Lavigne, Marie-France Valois, Marianne Hatzopoulou, Keith Van Ryswyk, Maryam Shekarrizfard, Paul J Villeneuve, Daniel Crouse, Marie-Élise Parent
BACKGROUND: There is scant information as to whether traffic-related air pollution is associated with the incidence of breast cancer. Nitrogen dioxide (NO2) and ultrafine particles (UFPs, <0.1µm), are two pollutants that capture intra-urban variations in traffic-related air pollution and may also be associated with incidence. METHODS: We conducted a population-based, case-control study of street-level concentrations of NO2 and UFPs and incident postmenopausal breast cancer in Montreal, Canada...
June 5, 2017: Environmental Research
https://www.readbyqxmd.com/read/28587266/comparison-and-evaluation-of-annual-ndvi-time-series-in-china-derived-from-the-noaa-avhrr-ltdr-and-terra-modis-mod13c1-products
#14
Xiaoyi Guo, Hongyan Zhang, Zhengfang Wu, Jianjun Zhao, Zhengxiang Zhang
Time series of Normalized Difference Vegetation Index (NDVI) derived from multiple satellite sensors are crucial data to study vegetation dynamics. The Land Long Term Data Record Version 4 (LTDR V4) NDVI dataset was recently released at a 0.05 × 0.05° spatial resolution and daily temporal resolution. In this study, annual NDVI time series that are composited by the LTDR V4 and Moderate Resolution Imaging Spectroradiometer (MODIS) NDVI datasets (MOD13C1) are compared and evaluated for the period from 2001 to 2014 in China...
June 6, 2017: Sensors
https://www.readbyqxmd.com/read/28578240/spatio-temporal-topsoil-organic-carbon-mapping-of-a-semi-arid-mediterranean-region-the-role-of-land-use-soil-texture-topographic-indices-and-the-influence-of-remote-sensing-data-to-modelling
#15
Calogero Schillaci, Marco Acutis, Luigi Lombardo, Aldo Lipani, Maria Fantappiè, Michael Märker, Sergio Saia
SOC is the most important indicator of soil fertility and monitoring its space-time changes is a prerequisite to establish strategies to reduce soil loss and preserve its quality. Here we modelled the topsoil (0-0.3m) SOC concentration of the cultivated area of Sicily in 1993 and 2008. Sicily is an extremely variable region with a high number of ecosystems, soils, and microclimates. We studied the role of time and land use in the modelling of SOC, and assessed the role of remote sensing (RS) covariates in the boosted regression trees modelling...
June 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28575405/long-term-exposure-to-road-traffic-noise-ambient-air-pollution-and-cardiovascular-risk-factors-in-the-hunt-and-lifelines-cohorts
#16
Yutong Cai, Anna L Hansell, Marta Blangiardo, Paul R Burton, Kees de Hoogh, Dany Doiron, Isabel Fortier, John Gulliver, Kristian Hveem, Stéphane Mbatchou, David W Morley, Ronald P Stolk, Wilma L Zijlema, Paul Elliott, Susan Hodgson
Aims: Blood biochemistry may provide information on associations between road traffic noise, air pollution, and cardiovascular disease risk. We evaluated this in two large European cohorts (HUNT3, Lifelines). Methods and results: Road traffic noise exposure was modelled for 2009 using a simplified version of the Common Noise Assessment Methods in Europe (CNOSSOS-EU). Annual ambient air pollution (PM10, NO2) at residence was estimated for 2007 using a Land Use Regression model...
May 31, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28562787/effect-of-land-use-in-seasonal-abundance-of-eared-dove-zenaida-auriculata-in-southwestern-brazil
#17
G G Silva, D L Guadagnin
Changes at the landscape scale associated with expansion in agricultural land use and changes in agricultural practices are common causes of alteration in patterns of abundance and composition of avian communities. Eared Dove (Zenaida auriculata - Des Murs, 1847) is among the most common species in the Neotropics, considered both as game and pest in some countries. Here we characterized the regional and seasonal patterns of Eared Doves abundance in Southwestern Brazil and examined the relationship between landscape features and these abundance patterns...
May 25, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28561799/extending-participatory-sensing-to-personal-exposure-using-microscopic-land-use-regression-models
#18
Luc Dekoninck, Dick Botteldooren, Luc Int Panis
Personal exposure is sensitive to the personal features and behavior of the individual, and including interpersonal variability will improve the health and quality of life evaluations. Participatory sensing assesses the spatial and temporal variability of environmental indicators and is used to quantify this interpersonal variability. Transferring the participatory sensing information to a specific study population is a basic requirement for epidemiological studies in the near future. We propose a methodology to reduce the void between participatory sensing and health research...
May 31, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28555121/risk-factors-for-gambling-problems-on-online-electronic-gaming-machines-race-betting-and-sports-betting
#19
Nerilee Hing, Alex M Russell, Matthew Browne
Growth of Internet gambling has fuelled concerns about its contribution to gambling problems. However, most online gamblers also gamble on land-based forms, which may be the source of problems for some. Studies therefore need to identify the problematic mode of gambling (online or offline) to identify those with an online gambling problem. Identifying most problematic form of online gambling (e.g., EGMs, race betting, sports betting) would also enable a more accurate examination of gambling problems attributable to a specific online gambling form...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28551741/soil-calcium-significantly-promotes-uptake-of-inorganic-arsenic-by-garland-chrysanthemum-chrysanthemuml-coronarium-fertilized-with-chicken-manure-bearing-roxarsone-and-its-metabolites
#20
Lixian Yao, Lianxi Huang, Cuihua Bai, Zhaohuan He, Changmin Zhou
Roxarsone (ROX), a widely used feed organoarsenic additive, occurs as itself and its metabolites in animal manure that is commonly land used as fertilizer. Soil property impacts arsenic (As) speciation and bioavailability. Fourteen soils across China were used to conduct culture experiments to investigate As uptake by garland chrysanthemum (ChrysanthemumL coronarium), with the soils fertilized with chicken manure bearing ROX and its metabolites. The results show As(III) was the sole As form in garland chrysanthemum shoots, and As(III) and As(V) occurred in roots...
May 27, 2017: Environmental Science and Pollution Research International
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