Abstract：
:Microbial activity is a critical factor controlling methylmercury formation in aquatic environments. Microbial communities were isolated from sediments of two highly mercury-polluted areas of the Tagus Estuary (Barreiro and Cala do Norte) and differentiated according to their dependence on oxygen into three groups: aerobic, anaerobic, and sulphate-reducing microbial communities. Their potential to methylate mercury and demethylate methylmercury was evaluated through incubation with isotope-enriched Hg species (199HgCl and CH₃201HgCl). The results showed that the isolated microbial communities are actively involved in methylation and demethylation processes. The production of CH₃199Hg was positively correlated with sulphate-reducing microbial communities, methylating up to 0.07% of the added 199Hg within 48 h of incubation. A high rate of CH₃201Hg degradation was observed and >20% of CH₃201Hg was transformed. Mercury removal of inorganic forms was also observed. The results prove the simultaneous occurrence of microbial methylation and demethylation processes and indicate that microorganisms are mainly responsible for methylmercury formation and accumulation in the polluted Tagus Estuary.
journal_name
Int J Environ Res Public Healthauthors
Figueiredo N,Serralheiro ML,Canário J,Duarte A,Hintelmann H,Carvalho Cdoi
10.3390/ijerph15102141subject
Has Abstractpub_date
2018-09-29 00:00:00issue
10eissn
1661-7827issn
1660-4601pii
ijerph15102141journal_volume
15pub_type
杂志文章abstract：:Increasing healthy food options in public venues, including recreational facilities, is a health priority. The purpose of this study was to describe the public recreation food environment in British Columbia, Canada using a sequential explanatory mixed methods design. Facility audits assessed policy, programs, vending...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph7052208
更新日期：2010-05-01 00:00:00
abstract：:Recent studies investigating elite and master athletes in pool- and long-distance open-water swimming showed for elite swimmers that the fastest women were able to outperform the fastest men, and for master athletes that elderly women were able to achieve a similar performance to elderly men. The present study investi...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph16132310
更新日期：2019-06-29 00:00:00
abstract：:This study investigates the chemical composition of water-soluble inorganic ions at eight localities situated in the Moravian-Silesian Region (the Czech Republic) at the border with Poland. Water-soluble inorganic ions were monitored in the winter period of 2018 (January, 11 days and February, 5 days). The set was div...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph17103447
更新日期：2020-05-15 00:00:00
abstract：:Microbial larviciding can be an effective component of integrated vector management malaria control schemes, although it is not commonly implemented. Moreover, quality control and evaluation of intervention activities are essential to evaluate the potential of community-based larviciding interventions. We conducted a ...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph17197309
更新日期：2020-10-07 00:00:00
abstract：:Arsenic is a toxic metalloid with known adverse effects on human health. Glutathione-S-transferase (GST) genes, including GSTT1, GSTP1, and GSTM1, play a major role in detoxification and metabolism of xenobiotics. We investigated the association between GST genotypes and whole blood arsenic concentrations (BASC) in Ja...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph110807874
更新日期：2014-08-06 00:00:00
abstract：:Variation in the odds ratio (OR) resulting from selection of cutoffs for categorizing continuous variables is rarely discussed. We present results for the effect of varying cutoffs used to categorize a mismeasured exposure in a simulated population in the context of autism spectrum disorders research. Simulated cohort...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph120810198
更新日期：2015-08-24 00:00:00
abstract：:Community empowerment interventions, which aim to build greater individual and community control over health, are shaped by the community systems in which they are implemented. Drawing on complex systems thinking in public health research, this paper discusses the evaluation approach used for a UK community empowermen...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph17010091
更新日期：2019-12-21 00:00:00
abstract：:Waste source separation is the fundamental premise to ensure effective waste recycling. Whether the entire waste recycling and reduction process can be effectively carried out depends on the waste source separation. Clarifying the driving mechanism of waste separation behavior plays an important role in effectively gu...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph16101859
更新日期：2019-05-27 00:00:00
abstract：:Disparities in dietary behaviors have been directly linked to the food environment, including access to retail food outlets. The Coronavirus Disease of 2019 (COVID-19) pandemic has led to major changes in the distribution, sale, purchase, preparation, and consumption of food in the United States (US). This paper refle...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph17207397
更新日期：2020-10-11 00:00:00
abstract：:This paper describes the methodology, design and procedures used in the HEADS UP Project, an observational study to examine the feasibility of a state-funded weight loss program. HEADS UP offered two weight loss approaches: bariatric surgery or a non-surgical intervention composed of medical management, a low-calorie ...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph17092999
更新日期：2020-04-26 00:00:00
abstract：:Large amounts of aerosol particles suspended in the atmosphere pose a serious challenge to the climate and human health. In this study, we produced a dataset through merging the Moderate Resolution Imaging Spectrometers (MODIS) Collection 6.1 3-km resolution Dark Target aerosol optical depth (DT AOD) with the 10-km re...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph16193522
更新日期：2019-09-20 00:00:00
abstract：:Background: The European Society of Pediatric Infectious Diseases (ESPID) guidelines for acute hematogenous osteomyelitis (AHOM) have been published recently. In uncomplicated cases, an early (2-4 days) switch to oral empirical therapy, preferentially with flucloxacillin, is recommended in low methicillin-resistant St...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph16193557
更新日期：2019-09-23 00:00:00
abstract：:Recently, people have become increasingly aware of potential health issues related to indoor environments. In this study, we measure the concentrations of various volatile organic compounds, carbonyl compounds, and semi-volatile organic compounds, as well as the ventilation rates, in 49 new houses with light-gauge ste...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph16214142
更新日期：2019-10-28 00:00:00
abstract：:Alzheimer's disease (AD) is one of the most common neurodegenerative disorders known. Estimates from the Alzheimer's Association suggest that there are currently 5.8 million Americans living with the disease and that this will rise to 14 million by 2050. Research over the decades has revealed that AD pathology is comp...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章,评审
doi：10.3390/ijerph16142560
更新日期：2019-07-18 00:00:00
abstract：:The determination of natural radionuclide concentrations plays an important role for assuring public health and in the estimation of the radiological hazards. This is especially true for high level radiation areas. In this study, 226Ra, 228Ra and 238U concentrations were measured in well waters surrounding eight of th...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph18020469
更新日期：2021-01-08 00:00:00
abstract：:Transformation of the river catchment and the river bed cause significant changes in the functioning of river ecosystems. The main effects of anthropogenic transformations are hydrological changes, such as lower current velocity or an increase of nutrient content, and higher temperature. Zooplankton reacts rapidly to ...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph16010020
更新日期：2018-12-21 00:00:00
abstract：:Fine airborne respirable particulates less than 10 micrometer (PM10) are considered one of the top environmental public health concerns, since they contain polycyclic aromatic hydrocarbons (PAHs) which are among the major carcinogenic compounds found in urban air. The objective of this study is to assess the genotoxic...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph2007030004
更新日期：2007-09-01 00:00:00
abstract：:Changes in economic development stage and growth type will lead to variations in the CO₂ emissions. Traditional empirical analysis of the variations often only considers the impact of influencing factors on CO₂ emissions from a single dimension. Under the background of China's economy transferring from high-speed grow...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph16060944
更新日期：2019-03-15 00:00:00
abstract：:Soils contaminated with hydrocarbons (C(10)-C(50)), PAHS, lead and other heavy metals were recently found in the banks of two major rivers in southern Québec. Alluvial soils are contaminated over a distance of 100 kilometers. Eight sampling sites, including some located in agriculture areas (farm woodlots) have been s...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph7083100
更新日期：2010-08-01 00:00:00
abstract：:The study was carried out to estimate the prevalence of self-medication with antibiotics among tertiary level students in Accra (Ghana) and evaluate factors associated with the practice. This was a descriptive cross-sectional study and involved face-to-face interviews of 600 respondents selected by convenient sampling...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph9103519
更新日期：2012-10-05 00:00:00
abstract：:Physical activity is beneficial for people with dementia. We previously developed a theoretical model to explain behaviour change in physical activity in dementia (PHYT-in-dementia). This study aimed to externally validate the model. Validation occurred through the process evaluation of a programme promoting activity ...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph17051544
更新日期：2020-02-28 00:00:00
abstract：:Background: This study examines if education, income, and loneliness are associated with physical functioning and optimism in an ageing population in Germany. Furthermore, time trends of physical functioning and optimism as well as of associations with social inequality and loneliness are analyzed. Methods: The German...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph17155314
更新日期：2020-07-23 00:00:00
abstract：:In the context of "space of flow", urban interaction has become the key force impacting urban landscape evolution and urban sustainable development. Current research on urban interaction analysis is mainly conducted based on the interaction of geographical elements, the virtual flow of information in cyberspace has no...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph17124235
更新日期：2020-06-13 00:00:00
abstract：:This article proposes an integrative policy approach to defining and promoting wellbeing through the joint lenses of positive psychology and environmental sustainability. The study suggests that while both positive education and environmental education address various aspects of wellbeing, a common definition is still...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph17196968
更新日期：2020-09-23 00:00:00
abstract：:A marked increase in canine leptospirosis was observed in Switzerland over 10 years with a peak incidence of 28.1 diagnosed cases/100,000 dogs/year in the most affected canton. With 95% affected dogs living at altitudes <800 m, the disease presented a seasonal pattern associated with temperature (r2 0.73) and rainfall...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph110707242
更新日期：2014-07-16 00:00:00
abstract：:The present study reports mathematical modelling of palm oil mill effluent and palm-pressed fiber mixtures (0% to 100%) during vermicomposting process. The effects of different mixtures with respect to pH, C:N ratio and earthworms have been optimized using the modelling parameters. The results of analysis of variance ...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph16122092
更新日期：2019-06-13 00:00:00
abstract：:Migrant centres, as other institutions hosting closed or semi-open communities, may face specific challenges in preventing and controlling communicable disease transmission, particularly during times of large sudden influx. However, there is dearth of evidence on how to prioritise investments in aspects such as human ...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章,评审
doi：10.3390/ijerph15061120
更新日期：2018-05-30 00:00:00
abstract：:The aim of this study was exploratory and sought to examine the effect on blood pressure (BP), heart rate (HR) and mood state responses in primary school children of moderate intensity cycling whilst viewing a green environment compared to exercise alone. Following ethics approval and parental informed consent, 14 chi...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph110403678
更新日期：2014-04-02 00:00:00
abstract：:Australia has one of the world's highest life expectancy rates, and there is a rapidly growing need for informal caregivers to support individuals who are ageing, have chronic illness or a lifelong disability. These informal carers themselves face numerous physical and psychological stressors in attempting to balance ...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph15102267
更新日期：2018-10-16 00:00:00
abstract：:Background: The identification of gender differences in kinematics and coordination of movement in different body segments in sports may improve the training process by emphasizing the necessity of its differentiation, and consequently individualization, developing, and improving the technique in women and men. Indica...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph17165742
更新日期：2020-08-08 00:00:00
