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https://www.readbyqxmd.com/read/28527142/temporal-and-spatial-features-of-selected-wastewater-marking-pharmaceuticals-and-potential-mechanisms-of-their-removal-from-urban-rivers
#1
Haidong Zhou, Yadan Wangjin, Jianbo Liu, Tianqi Ying, Yumei Xuan
The investigations on seasonal and spatial distribution of 12 selected wastewater-marking pharmaceuticals (WWMPs) belonging to different therapeutic classes were conducted in three major urban rivers of Yangpu District, Shanghai, East China. The potential mechanisms for the removal of WWMPs in the rivers were also experimentally investigated. The detection frequencies of most WWMPs were in the range of 56-100%, with the exception of clofibric acid, which was not detected during the storm events. The median concentrations ranged from not detected to 5821 ng/L (caffeine) and the maximum concentration was 8662 ng/L, found in caffeine...
May 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28525627/geographic-patterns-of-autism-spectrum-disorder-among-children-of-nurses-health-study-ii-women
#2
Kate Hoffman, Marc G Weisskopf, Andrea L Roberts, Raanan Raz, Jaime E Hart, Kristen Lyall, Elin M Hoffman, Francine Laden, Verónica M Vieira
Data indicate that autism spectrum disorder (ASD) prevalence may be increasing and varies geographically. We investigated associations between residential location and ASD in the children of Nurses' Health Study II women in order to generate hypotheses about social and environmental factors related to etiology or diagnosis. Analyses included 13,507 children born from 1989-1999 (486 with ASD). We explored relationships between ASD and residential location at both birth and age 6 years (i.e. closer to average diagnosis age)...
May 19, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28520988/geographical-inequality-in-tobacco-control-in-china-multilevel-evidence-from-98-058-participants
#3
Thomas Astell-Burt, Mei Zhang, Xiaoqi Feng, Limin Wang, Yichong Li, Andrew Page, Maigeng Zhou, Linhong Wang
Background: We investigated the spatial patterning and correlates of tobacco smoking, exposure to second-hand smoke, smoking in public places, workplace smoking prohibition, pro- and counter-tobacco advertisements in mainland China. Methods: Choropleth maps and multilevel models were used to assess geographical variation and correlates of the aforementioned outcome variables for 98,058 participants across 31 provinces of China in 2010. Results: Current tobacco smoking prevalence was higher in the central provinces for men and in the north eastern provinces and Tibet for women...
May 17, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28520816/high-prevalence-of-elevated-blood-lead-levels-in-both-rural-and-urban-iowa-newborns-spatial-patterns-and-area-level-covariates
#4
Margaret Carrel, David Zahrieh, Sean G Young, Jacob Oleson, Kelli K Ryckman, Brian Wels, Donald L Simmons, Audrey Saftlas
Lead in maternal blood can cross the placenta and result in elevated blood lead levels in newborns, potentially producing negative effects on neurocognitive function, particularly if combined with childhood lead exposure. Little research exists, however, into the burden of elevated blood lead levels in newborns, or the places and populations in which elevated lead levels are observed in newborns, particularly in rural settings. Using ~2300 dried bloods spots collected within 1-3 days of birth among Iowa newborns, linked with the area of mother's residence at the time of birth, we examine the spatial patterns of elevated (>5 μg/dL) blood lead levels and the ecological-level predictors of elevated blood lead levels...
2017: PloS One
https://www.readbyqxmd.com/read/28516901/eeg-source-space-analysis-of-the-supervised-factor-analytic-approach-for-the-classification-of-multi-directional-arm-movement
#5
Vikram Shenoy Handiru, A P Vinod, Cuntai Guan
OBJECTIVE: In electroencephalography (EEG)-based brain-computer interface (BCI) systems for motor control tasks the conventional practice is to decode motor intentions by using scalp EEG. However, scalp EEG only reveals certain limited information about the complex tasks of movement with a higher degree of freedom. Therefore, our objective is to investigate the effectiveness of source-space EEG in extracting relevant features that discriminate arm movement in multiple directions. APPROACH: We have proposed a novel feature extraction algorithm based on supervised factor analysis that models the data from source-space EEG...
May 18, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28516144/geospatial-datasets-in-support-of-high-resolution-spatial-assessment-of-population-vulnerability-to-climate-change-in-nepal
#6
Janardan Mainali, Narcisa G Pricope
We present a geographic information system (GIS) dataset with a nominal spatial resolution of one-kilometer composed of grid polygons originally derived and utilized in a high-resolution climate vulnerability model for Nepal. The different data sets described and shared in this article are processed and tailored to the specific objectives of our research paper entitled "High-resolution Spatial Assessment of Population Vulnerability to Climate Change in Nepal" (Mainali and Pricope, In press) [1]. We share these data recognizing that there is a significant gap in regards to data availability, the spatial patterns of different biophysical and socioeconomic variables, and the overall population vulnerability to climatic variability and disasters in Nepal...
June 2017: Data in Brief
https://www.readbyqxmd.com/read/28515416/observational-evidence-for-desert-amplification-using-multiple-satellite-datasets
#7
Nan Wei, Liming Zhou, Yongjiu Dai, Geng Xia, Wenjian Hua
Desert amplification identified in recent studies has large uncertainties due to data paucity over remote deserts. Here we present observational evidence using multiple satellite-derived datasets that desert amplification is a real large-scale pattern of warming mode in near surface and low-tropospheric temperatures. Trend analyses of three long-term temperature products consistently confirm that near-surface warming is generally strongest over the driest climate regions and this spatial pattern of warming maximizes near the surface, gradually decays with height, and disappears in the upper troposphere...
May 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28513920/moisture-induced-greening-of-the-south-asia-over-the-past-three-decades
#8
Xiaoyi Wang, Tao Wang, Dan Liu, Hui Guo, Huabing Huang, Yutong Zhao
South Asia experienced a weakening of summer monsoon circulation in the past several decades, resulting in rainfall decline in wet regions. In comparison to other tropical ecosystems, quantitative assessments of the extent and triggers of vegetation change are lacking in assessing climate-change impacts over South Asia dominated by crops. Here we use satellite-based normalized difference vegetation index (NDVI) to quantify spatial-temporal changes in vegetation greenness, and find a widespread annual greening trend that stands in contrast to the weakening of summer monsoon circulation particularly over the last decade...
May 17, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28513916/global-forest-carbon-uptake-due-to-nitrogen-and-phosphorus-deposition-from-1850-to-2100
#9
Rong Wang, Daniel Goll, Yves Balkanski, Didier Hauglustaine, Olivier Boucher, Philippe Ciais, Ivan Janssens, Josep Penuelas, Bertrand Guenet, Jordi Sardans, Laurent Bopp, Nicolas Vuichard, Feng Zhou, Bengang Li, Shilong Piao, Shushi Peng, Ye Huang, Shu Tao
Spatial patterns and temporal trend of nitrogen (N) and phosphorus (P) deposition are important for quantifying their impact on forest carbon (C) uptake. In a first step, we modeled historical and future change in the global distributions of the atmospheric deposition of N and P from the dry and wet deposition of aerosols and gases containing N and P. Future projections were compared between two scenarios with contrasting aerosol emissions. Modeled fields of N and P deposition and P concentration were evaluated using globally distributed in situ measurements...
May 17, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28513291/low-cost-mobile-air-pollution-monitoring-in-urban-environments-a-pilot-study-in-lubbock-texas
#10
Grant R McKercher, Jennifer K Vanos
The complex nature of air pollution in urban areas due to meteorological influences and mobile emissions prevents traditional monitoring techniques from obtaining measurements representative of true human exposure. Small, mobile air pollution monitors, however, are useful tools to address this complexity. The current study assessed the capability of low-cost mobile monitors to acquire useful data in a city without a monitoring network in place (Lubbock, Texas) using a bicycle platform. The monitoring campaign resulted in 30 days of data along a 13...
May 17, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28510602/tree-based-approach-for-exploring-marine-spatial-patterns-with-raster-datasets
#11
Xiaohan Liao, Cunjin Xue, Fenzhen Su
From multiple raster datasets to spatial association patterns, the data-mining technique is divided into three subtasks, i.e., raster dataset pretreatment, mining algorithm design, and spatial pattern exploration from the mining results. Comparison with the former two subtasks reveals that the latter remains unresolved. Confronted with the interrelated marine environmental parameters, we propose a Tree-based Approach for eXploring Marine Spatial Patterns with multiple raster datasets called TAXMarSP, which includes two models...
2017: PloS One
https://www.readbyqxmd.com/read/28509907/a-database-of-georeferenced-nutrient-chemistry-data-for-mountain-lakes-of-the-western-united-states
#12
Jason Williams, Stephanie G Labou
Human activities have increased atmospheric nitrogen and phosphorus deposition rates relative to pre-industrial background. In the Western U.S., anthropogenic nutrient deposition has increased nutrient concentrations and stimulated algal growth in at least some remote mountain lakes. The Georeferenced Lake Nutrient Chemistry (GLNC) Database was constructed to create a spatially-extensive lake chemistry database needed to assess atmospheric nutrient deposition effects on Western U.S. mountain lakes. The database includes nitrogen and phosphorus water chemistry data spanning 1964-2015, with 148,336 chemistry results from 51,048 samples collected across 3,602 lakes in the Western U...
May 16, 2017: Scientific Data
https://www.readbyqxmd.com/read/28507418/spatial-pattern-of-foot-and-mouth-disease-virus-serotypes-in-north-central-nigeria
#13
Yiltawe Simwal Wungak, Olayinka O Ishola, Babasola O Olugasa, David D Lazarus, David O Ehizibolo, Hussaini G Ularamu
AIM: This study aimed to determine the foot-and-mouth disease virus (FMDV) serotypes circulating, the prevalence of FMDV serotypes, and the spatial distribution of FMDV among sedentary and pastoral cattle herds in the North-Central Nigeria. MATERIALS AND METHODS: A cross-sectional study was undertaken, during which a total of 155 sera that tested positive for foot-and-mouth disease (FMD) 3ABC non-structural protein antibodies were selected and screened for FMD structural protein serotypes, A, O, SAT 1, and SAT 2 using a solid-phase competitive enzyme-linked immunosorbent assay (ELISA)...
April 2017: Veterinary World
https://www.readbyqxmd.com/read/28505883/spatial-patterns-and-temporal-trends-of-trace-metal-mass-budgets-in-the-western-adriatic-sediments-mediterranean-sea
#14
Marilia Lopes-Rocha, Leonardo Langone, Stefano Miserocchi, Patrizia Giordano, Roberta Guerra
Spatial patterns of major (Al, Fe and Ti) and trace metals (Cu, Cr, Mn, Ni, Pb and Zn) measured in surficial sediments collected within the Late-Holocene mud-wedge in the western Adriatic Sea were analyzed to elucidate their sources, transport and mass budgets. Distributions of sedimentary trace metals, their fluvial inputs and accumulation loads reveal along-shore transport towards the southern Adriatic. Pb and to a lower extent Zn accumulation loads over time decreased significantly since 1988 in the North Adriatic, consistently with the implementation of regulations in the Western Europe, whereas Zn accumulation in the Po River prodelta remained unchanged since 1995...
May 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28505875/spatiotemporal-canards-in-neural-field-equations
#15
D Avitabile, M Desroches, E Knobloch
Canards are special solutions to ordinary differential equations that follow invariant repelling slow manifolds for long time intervals. In realistic biophysical single-cell models, canards are responsible for several complex neural rhythms observed experimentally, but their existence and role in spatially extended systems is largely unexplored. We identify and describe a type of coherent structure in which a spatial pattern displays temporal canard behavior. Using interfacial dynamics and geometric singular perturbation theory, we classify spatiotemporal canards and give conditions for the existence of folded-saddle and folded-node canards...
April 2017: Physical Review. E
https://www.readbyqxmd.com/read/28505836/stationary-patterns-in-star-networks-of-bistable-units-theory-and-application-to-chemical-reactions
#16
Nikos E Kouvaris, Michael Sebek, Albert Iribarne, Albert Díaz-Guilera, István Z Kiss
We present theoretical and experimental studies on pattern formation with bistable dynamical units coupled in a star network configuration. By applying a localized perturbation to the central or the peripheral elements, we demonstrate the subsequent spreading, pinning, or retraction of the activations; such analysis enables the characterization of the formation of stationary patterns of localized activity. The results are interpreted with a theoretical analysis of a simplified bistable reaction-diffusion model...
April 2017: Physical Review. E
https://www.readbyqxmd.com/read/28504953/adaptive-seizure-onset-detection-framework-using-a-hybrid-pca-csp-approach
#17
Sina Khanmohammadi, Chun-An Chou
Epilepsy is one of the most common neurological disorders in the world. Prompt detection of seizure onset from electroencephalogram (EEG) signals can improve the treatment of epileptic patients. This paper presents a new adaptive patientspecific seizure onset detection framework that dynamically selects a feature from enhanced EEG signals to discriminate seizures from normal brain activity. The proposed framework employs principle component analysis (PCA) and common spatial patterns (CSP) to enhance the EEG signals and uses the extracted discriminative feature as an input for adaptive distance-based change point detector to identify the seizure onsets...
May 12, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28501633/atmospheric-mercury-deposition-to-forests-in-the-eastern-usa
#18
Martin R Risch, John F DeWild, David A Gay, Leiming Zhang, Elizabeth W Boyer, David P Krabbenhoft
Atmospheric mercury (Hg) deposition to forests is important because half of the land cover in the eastern USA is forest. Mercury was measured in autumn litterfall and weekly precipitation samples at a total of 27 National Atmospheric Deposition Program (NADP) monitoring sites in deciduous and mixed deciduous-coniferous forests in 16 states in the eastern USA during 2007-2014. These simultaneous, uniform, repeated, annual measurements of forest Hg include the broadest area and longest time frame to date. The autumn litterfall-Hg concentrations and litterfall mass at the study sites each year were combined with annual precipitation-Hg data...
May 11, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28500284/hotspot-analyses-indicate-significant-conservation-gaps-for-evergreen-broadleaved-woody-plants-in-china
#19
Yue Xu, Zehao Shen, Lingxiao Ying, Zhiheng Wang, Jihong Huang, Runguo Zang, Youxu Jiang
Evergreen broadleaved woody plants (EBWPs) are dominant components in forests and savanna of the global tropic and subtropic regions. Southern China possesses the largest continuous area of subtropical EBWPs distribution, harboring a high proportion of endemic species. Hotspot and gap analyses are effective methods for analyzing the spatial pattern of biodiversity and conservation and were used here for EBWPs in China. Based on a distribution data set of 6,265 EBWPs with a spatial resolution of 50 × 50 km, we measured diversity of EBWPs in China using four indices: species richness, corrected weighted endemism, relative phylogenetic diversity, and phylogenetic endemism...
May 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28495965/pias3-is-necessary-for-dorso-ventral-patterning-and-visual-response-of-retinal-cones-but-is-not-required-for-rod-photoreceptor-differentiation
#20
Christie K Campla, Hannah Breit, Lijin Dong, Jessica D Gumerson, Jerome E Roger, Anand Swaroop
Protein inhibitor of activated Stat 3 (Pias3) is implicated in guiding specification of rod and cone photoreceptors through posttranslational modification of key retinal transcription factors. To investigate its role during retinal development, we deleted exon 2-5 of the mouse Pias3 gene, which resulted in complete loss of the Pias3 protein. Pias3(-/-) mice did not show any overt phenotype, and retinal lamination appeared normal even at 18 months. We detected reduced photopic b-wave amplitude by electroretinography following green light stimulation of postnatal day (P) 21 Pias3(-/-) retina, suggesting a compromised visual response of medium wavelength (M) cones...
May 11, 2017: Biology Open
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