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https://www.readbyqxmd.com/read/28642585/how-postmortem-redistribution-of-mdma-in-acute-alcohol-mdma-combined-use-rats-change-under-effects-of-alcohol
#1
Man Liang, Jing Zhang, Na Zheng, Liang Liu
MDMA is often taken recreationally with alcohol as combined-use. The objective was to determine MDMA postmortem redistribution (PMR) and corresponding effects in combined-style under different storage conditions. Steps were 20%-mixture of alcohol-water for initial 4 weeks to Group-A&B and intragastric infusions of MDMA (150 mg/kg) to Group-A later; in the same time, drinking pure water to Group-C&D first and then MDMA-fed to Group-C. The sacrificed rats were kept under different conditions for 10-d, during which the body fluids and tissues were collected on 15 continuous time-points and then detected...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28615276/bluehealth-a-study-programme-protocol-for-mapping-and-quantifying-the-potential-benefits-to-public-health-and-well-being-from-europe-s-blue-spaces
#2
James Grellier, Mathew P White, Maria Albin, Simon Bell, Lewis R Elliott, Mireia Gascón, Silvio Gualdi, Laura Mancini, Mark J Nieuwenhuijsen, Denis A Sarigiannis, Matilda van den Bosch, Tanja Wolf, Susanne Wuijts, Lora E Fleming
INTRODUCTION: Proximity and access to water have long been central to human culture and accordingly deliver countless societal benefits. Over 200 million people live on Europe's coastline, and aquatic environments are the top recreational destination in the region. In terms of public health, interactions with 'blue space' (eg, coasts, rivers, lakes) are often considered solely in terms of risk (eg, drowning, microbial pollution). Exposure to blue space can, however, promote health and well-being and prevent disease, although underlying mechanisms are poorly understood...
June 14, 2017: BMJ Open
https://www.readbyqxmd.com/read/28600684/applying-spatial-analysis-techniques-to-assess-the-suitability-of-multipurpose-uses-of-spring-water-in-the-jiaosi-hot-spring-region-taiwan
#3
Cheng-Shin Jang, Han-Chen Huang
The Jiaosi Hot Spring Region is one of the most famous tourism destinations in Taiwan. The spring water is processed for various uses, including irrigation, aquaculture, swimming, bathing, foot spas, and recreational tourism. Moreover, the multipurpose uses of spring water can be dictated by the temperature of the water. To evaluate the suitability of spring water for these various uses, this study spatially characterized the spring water temperatures of the Jiaosi Hot Spring Region by integrating ordinary kriging (OK), sequential Gaussian simulation (SGS), and Geographic information system (GIS)...
July 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28599208/occurrence-of-pharmaceutical-recreational-and-psychotropic-drug-residues-in-surface-water-on-the-northern-antarctic-peninsula-region
#4
Silvia González-Alonso, Luis Moreno Merino, Sara Esteban, Miren López de Alda, Damià Barceló, Juan José Durán, Jerónimo López-Martínez, Jaume Aceña, Sandra Pérez, Nicola Mastroianni, Adrián Silva, Myriam Catalá, Yolanda Valcárcel
Human presence in the Antarctic is increasing due to research activities and the rise in tourism. These activities contribute a number of potentially hazardous substances. The aim of this study is to conduct the first characterisation of the pharmaceuticals and recreational drugs present in the northern Antarctic Peninsula region, and to assess the potential environmental risk they pose to the environment. The study consisted of a single sampling of ten water samples from different sources, including streams, ponds, glacier drains, and a wastewater discharge into the sea...
June 6, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28598349/predicting-water-filter-and-bottled-water-use-in-appalachia-a-community-scale-case-study
#5
Jonas G Levêque, Robert C Burns
A questionnaire survey was conducted in order to assess residents' perceptions of water quality for drinking and recreational purposes in a mid-sized city in northcentral West Virginia. Two logistic regression analyses were conducted in order to investigate the factors that influence bottle use and filter use. Results show that 37% of respondents primarily use bottled water and that 58% use a household filter when drinking from the tap. Respondents with lower levels of environmental concern, education levels, and lower organoleptic perceptions were most likely to perceive health risks from tap water consumption, and were most likely to use bottled water...
June 2017: Journal of Water and Health
https://www.readbyqxmd.com/read/28597613/the-use-of-steroids-by-gym-athletes-an-attempt-to-diagnose-the-problem-scale-and-possible-causes
#6
Katarzyna Gwizdek, Anna Brzęk, Monika Bąk-Sosnowska, Anna Dittfeld, Andrzej Knapik, Damian Ziaja
BACKGROUND: Anabolic-androgenic steroids (AAS) are said to be frequently used by both professional and amateur athletes. In addition to having a negative impact on health, steroids defy the concept of fair play. DESIGN: observational study. SETTING: other - Gyms. AIM: The aim of the study was to evaluate the scale of the problem related to using anabolic- androgenic steroids (AAS) by gym athletes and to analyze possible causes...
June 8, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28587134/measuring-blue-space-visibility-and-blue-recreation-in-the-everyday-lives-of-children-in-a-capital-city
#7
Amber L Pearson, Ross Bottomley, Tim Chambers, Lukar Thornton, James Stanley, Moira Smith, Michelle Barr, Louise Signal
Blue spaces (water bodies) may promote positive mental and physical health through opportunities for relaxation, recreation, and social connections. However, we know little about the nature and extent of everyday exposure to blue spaces, particularly in settings outside the home or among children, nor whether exposure varies by individual or household characteristics. Wearable cameras offer a novel, reliable method for blue space exposure measurement. In this study, we used images from cameras worn over two days by 166 children in Wellington, New Zealand, and conducted content and blue space quantification analysis on each image (n = 749,389)...
May 26, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28582738/effects-of-ship-induced-waves-on-aquatic-ecosystems
#8
REVIEW
Friederike Gabel, Stefan Lorenz, Stefan Stoll
Most larger water bodies worldwide are used for navigation, and the intensity of commercial and recreational navigation is expected to further increase. Navigation profoundly affects aquatic ecosystems. To facilitate navigation, rivers are trained and developed, and the direct effects of navigation include chemical and biological impacts (e.g., inputs of toxic substances and dispersal of non-native species, respectively). Furthermore, propagating ships create hydrodynamic alterations, often simply summarized as waves...
June 2, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28561562/using-national-scale-data-to-develop-nutrient-microcystin-relationships-that-guide-management-decisions
#9
Lester L Yuan, Amina I Pollard
Quantitative models that predict cyanotoxin concentrations in lakes and reservoirs from nutrient concentrations would facilitate management of these resources for recreation and as sources of drinking water. Development of these models from field data has been hampered by the high proportion of samples in which cyanotoxin concentrations are below detection limits and by the high variability of cyanotoxin concentrations within individual lakes. Here, we describe a national-scale hierarchical Bayesian model that addresses these issues and that predicts microcystin concentrations from summer mean total nitrogen and total phosphorus concentrations...
June 12, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28558279/incidence-of-gastrointestinal-illness-following-wet-weather-recreational-exposures-harmonization-of-quantitative-microbial-risk-assessment-with-an-epidemiologic-investigation-of-surfers
#10
Jeffrey A Soller, Mary Schoen, Joshua A Steele, John F Griffith, Kenneth C Schiff
We modeled the risk of gastrointestinal (GI) illness associated with recreational exposures to marine water following storm events in San Diego County, California. We estimated GI illness risks via quantitative microbial risk assessment (QMRA) techniques by consolidating site specific pathogen monitoring data of stormwater, site specific dilution estimates, literature-based water ingestion data, and literature based pathogen dose-response and morbidity information. Our water quality results indicated that human sources of contamination contribute viral and bacterial pathogens to streams draining an urban watershed during wet weather that then enter the ocean and affect nearshore water quality...
May 13, 2017: Water Research
https://www.readbyqxmd.com/read/28549275/understanding-the-relationships-between-water-quality-recreational-fishing-practices-and-human-health-in-phoenix-arizona
#11
E Pulford, B A Polidoro, M Nation
Across the United States, recreational freshwater fisheries are not only an important leisure activity, but can also provide a relatively inexpensive source of protein in local diets. However, recreational freshwater fisheries are generally not well-monitored in terms of fish consumption vs. catch and release, nor are all recreational surface waters regularly monitored for the presence of potentially harmful contaminants in water or fishes. In six urban lakes that support recreational fisheries in Phoenix, Arizona, a majority of surveyed anglers reported eating recreationally caught fishes, even though they thought the water might be polluted...
September 1, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28538189/evaluation-of-methods-to-sample-fecal-indicator-bacteria-in-foreshore-sand-and-pore-water-at-freshwater-beaches
#12
Laura J Vogel, Thomas A Edge, Denis M O'Carroll, Helena M Solo-Gabriele, Caitlin S E Kushnir, Clare E Robinson
Fecal indicator bacteria (FIB) are known to accumulate in foreshore beach sand and pore water (referred to as foreshore reservoir) where they act as a non-point source for contaminating adjacent surface waters. While guidelines exist for sampling surface waters at recreational beaches, there is no widely-accepted method to collect sand/sediment or pore water samples for FIB enumeration. The effect of different sampling strategies in quantifying the abundance of FIB in the foreshore reservoir is unclear. Sampling was conducted at six freshwater beaches with different sand types to evaluate sampling methods for characterizing the abundance of E...
May 9, 2017: Water Research
https://www.readbyqxmd.com/read/28520707/using-molecular-characterization-to-support-investigations-of-aquatic-facility-associated-outbreaks-of-cryptosporidiosis-alabama-arizona-and-ohio-2016
#13
Michele C Hlavsa, Dawn M Roellig, Matthew H Seabolt, Amy M Kahler, Jennifer L Murphy, Taishayla K McKitt, Evelyn F Geeter, Ron Dawsey, Sherri L Davidson, Thuy N Kim, Theresa H Tucker, Sally Ann Iverson, Brenna Garrett, Nicole Fowle, Jennifer Collins, Gregory Epperson, Scott Zusy, Joli R Weiss, Ken Komatsu, Edwin Rodriguez, J Gage Patterson, Rebecca Sunenshine, Brandi Taylor, Katie Cibulskas, Lynn Denny, Keoni Omura, Boris Tsorin, Kathleen E Fullerton, Lihua Xiao
Cryptosporidiosis is a nationally notifiable gastrointestinal illness caused by parasitic protozoa of the genus Cryptosporidium, which can cause profuse, watery diarrhea that can last up to 2-3 weeks in immunocompetent patients and can lead to life-threatening wasting and malabsorption in immunocompromised patients. Fecal-oral transmission of Cryptosporidium oocysts, the parasite's infectious life stage, occurs via ingestion of contaminated recreational water, drinking water, or food, or following contact with infected persons or animals, particularly preweaned bovine calves (1)...
May 19, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28494284/evaluating-the-impact-of-irrigation-on-surface-water-groundwater-interaction-and-stream-temperature-in-an-agricultural-watershed
#14
Hedeff I Essaid, Rodney R Caldwell
Changes in groundwater discharge to streams caused by irrigation practices can influence stream temperature. Observations along two currently flood-irrigated reaches in the 640-square-kilometer upper Smith River watershed, an important agricultural and recreational fishing area in west-central Montana, showed a downstream temperature decrease resulting from groundwater discharge to the stream. A watershed-scale coupled surface water and groundwater flow model was used to examine changes in streamflow, groundwater discharge to the stream and stream temperature resulting from irrigation practices...
December 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28489717/coliphages-and-gastrointestinal-illness-in-recreational-waters-pooled-analysis-of-six-coastal-beach-cohorts
#15
Jade Benjamin-Chung, Benjamin F Arnold, Timothy J Wade, Kenneth Schiff, John F Griffith, Alfred P Dufour, Stephen B Weisberg, John M Colford
BACKGROUND: Coliphages have been proposed as indicators of fecal contamination in recreational waters because they better mimic the persistence of pathogenic viruses in the environment and wastewater treatment than fecal indicator bacteria. We estimated the association between coliphages and gastrointestinal illness and compared it to the association with culturable enterococci. METHODS: We pooled data from six prospective cohort studies that enrolled coastal beachgoers in California, Alabama, and Rhode Island...
May 9, 2017: Epidemiology
https://www.readbyqxmd.com/read/28483548/evaluation-of-triclosan-in-minnesota-lakes-and-rivers-part-ii-human-health-risk-assessment
#16
Lisa J Yost, Timothy R Barber, P Robinan Gentry, Michael J Bock, Jennifer L Lyndall, Marie C Capdevielle, Brian P Slezak
Triclosan, an antimicrobial compound found in consumer products, has been detected in low concentrations in Minnesota municipal wastewater treatment plant (WWTP) effluent. This assessment evaluates potential health risks for exposure of adults and children to triclosan in Minnesota surface water, sediments, and fish. Potential exposures via fish consumption are considered for recreational or subsistence-level consumers. This assessment uses two chronic oral toxicity benchmarks, which bracket other available toxicity values...
August 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28477238/identifying-societal-preferences-for-river-restoration-in-a-densely-populated-urban-environment-evidence-from-a-discrete-choice-experiment-in-central-brussels
#17
Wendy Y Chen, Inge Liekens, Steven Broekx
One of the major challenges facing river restoration in densely populated urban areas has been the disparity between the expectations of policy-makers and societal preferences. This study aimed to elicit public preferences and elucidate underlying sources of preference heterogeneity, using the Zenne River in central Brussels, Belgium, as a case study. A discrete choice experiment was administered to a representative sample of the Brussels population. Five attributes were specified, including water quality, ecological status, hydromorphological features of channels, recreational opportunities, and monetary cost...
May 5, 2017: Environmental Management
https://www.readbyqxmd.com/read/28473615/ten-days-of-repeated-local-forearm-heating-does-not-affect-cutaneous-vascular-function
#18
Michael A Francisco, Vienna E Brunt, Krista Nicole Jensen, Santiago Lorenzo, Christopher Todd Minson
The aim of the present study was to determine whether 10 days of repeated local heating was capable of inducing peripheral adaptations to the cutaneous vasculature, and to investigate potential mechanisms of adaptation. We also assessed maximal forearm blood flow to determine if repeated local heating affects maximal dilator capacity. METHODS: Before and after 10 days of heat training consisting of one-hour forearm exposures to 42°C water, or 32°C (control) in the contralateral arm (randomized and counterbalanced), we assessed hyperemia to rapid local heating of the skin (N=14 young, recreationally-active subjects)...
May 4, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28456079/temporal-variations-analyses-and-predictive-modeling-of-microbiological-seawater-quality
#19
Darija Vukić Lušić, Lado Kranjčević, Senka Maćešić, Dražen Lušić, Slaven Jozić, Željko Linšak, Lovorka Bilajac, Luka Grbčić, Neiro Bilajac
Bathing water quality is a major public health issue, especially for tourism-oriented regions. Currently used methods within EU allow at least a 2.2 day period for obtaining the analytical results, making outdated the information forwarded to the public. Obtained results and beach assessment are influenced by the temporal and spatial characteristics of sample collection, and numerous environmental parameters, as well as by differences of official water standards. This paper examines the temporal variation of microbiological parameters during the day, as well as the influence of the sampling hour, on decision processes in the management of the beach...
April 21, 2017: Water Research
https://www.readbyqxmd.com/read/28437769/contamination-study-of-forest-track-soils-located-in-a-recreational-area-and-filled-with-steel-industry-waste-30years-ago
#20
Leticia Gómez-Nubla, Julene Aramendia, Silvia Fdez-Ortiz de Vallejuelo, Juan Manuel Madariaga
The reuse of waste is increasingly widespread in order to avoid the exploitation of natural resources and to reduce costs. An example of that reuse is the employment of steel slag, a by-product from the steel making process. When the steel is produced through an electric arc furnace (EAF), two types of slag are generated: black and white slag. One application rarely used for this waste is as filler in forest tracks. In this work, two forest tracks of the Basque Country (northern Spain) filled with black and white slag 19 and 35years ago, respectively, have been studied...
November 15, 2017: Science of the Total Environment
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