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https://www.readbyqxmd.com/read/28644987/thiophene-thiazole-benzene-replacement-on-guanidine-derivatives-targeting-%C3%AE-2-adrenoceptors
#1
Aoife Flood, Cristina Trujillo, Goar Sanchez-Sanz, Brendan Kelly, Carolina Muguruza, Luis F Callado, Isabel Rozas
Searching for improved antagonists of α2-adrenoceptors, a thorough theoretical study comparing the aromaticity of phenyl-, pyridinyl-, thiophenyl- and thiazolylguanidinium derivatives has been carried out [at M06-2X/6-311++G(p,d) computational level] confirming that thiophene and thiazole will be good 'ring equivalents' to benzene in these guanidinium systems. Based on these results, a small but chemically diverse library of guanidine derivatives (15 thiophenes and 2 thiazoles) were synthesised to explore the effect that the bioisosteric change has on affinity and activity at α2-adrenoceptors in comparison with our previously studied phenyl derivatives...
June 6, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28644717/responses-of-a-vulnerable-hispanic-population-in-new-jersey-to-hurricane-sandy-access-to-care-medical-needs-concerns-and-ecological-ratings
#2
Joanna Burger, Michael Gochfeld, Taryn Pittfield, Christian Jeitner
Recent increases in hurricanes led to a need to evaluate access to medical care, medical needs, and personal and community impact on vulnerable populations, particularly elderly, low income, and minority communities. This investigation examined (1) access to care, (2) interruptions in medical services, (3) personal impact from Hurricane Sandy, and (4) agreement with ecological statements related to storms, flooding, and damages in Hispanic/Latino patients receiving health care at Federally Qualified Health Centers in New Jersey...
June 23, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28640147/human-photoreceptor-cone-density-measured-with-adaptive-optics-technology-rtx1-device-in-healthy-eyes-standardization-of-measurements
#3
Anna Zaleska-Żmijewska, Zbigniew M Wawrzyniak, Magdalena Ulińska, Jerzy Szaflik, Anna Dąbrowska, Jacek P Szaflik
The anatomic structures of the anterior segment of the eye enable correct reception of stimuli by the retina, which contains receptors that receive light impulses and transmit them to the visual cortex. The aim of this study was to assess the effect of the size of the sampling window in an adaptive optics (AO) flood-illumination retinal camera (rtx1) on cone density measurements in the eyes of healthy individuals and to investigate the differences in cone density and spacing in different quadrants of the retina...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28634870/assessing-different-sources-of-uncertainty-in-hydrological-projections-of-high-and-low-flows-case-study-for-omerli-basin-istanbul-turkey
#4
Batuhan Eren Engin, Ismail Yücel, Aysen Yilmaz
This study investigates the assessment of uncertainty contribution in projected changes of high and low flows from parameterization of a hydrological model and inputs of ensemble regional climate models (RCM). An ensemble of climate projections including 15 global circulation model (GCM)/RCM combinations and two bias corrections (change factor (CF) and bias correction in mean (BC)) was used to generate streamflow series for a reference and future period using the Hydrologiska Byråns Vattenbalansavdelning (HBV) model with the 25 best-fit parameter sets based on four objective functions...
July 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28633912/life-cycle-assessment-and-life-cycle-costs-for-pre-disaster-waste-management-systems
#5
Yohei Wakabayashi, Tsai Peii, Tomohiro Tabata, Takashi Saeki
This study develops a method of environmental and economic evaluation of an integrated disaster waste management system that considers the spatial scale of removal, transport, and treatment of disaster waste. A case study was conducted on combustibles, which is a type of disaster waste derived from dwellings, in Mie Prefecture, Japan. First, we calculated the quantity and the spatial distribution of disaster waste derived from dwellings and tsunami debris produced as a result of a large-scale earthquake. The quantity of disaster waste was estimated as 7,178,000t with functioning flood-preventing facilities and 11,956,000t without functioning flood prevention facilities...
June 17, 2017: Waste Management
https://www.readbyqxmd.com/read/28633079/assessment-of-stormwater-runoff-management-practices-and-bmps-under-soil-sealing-a-study-case-in-a-peri-urban-watershed-of-the-metropolitan-area-of-rome-italy
#6
Fabio Recanatesi, Andrea Petroselli, Maria Nicolina Ripa, Antonio Leone
By 2006, almost 100,000 km(2) of EU soil (2.3% of the whole territory) had been sealed, with a per capita quota of 200 m(2) of sealed surface for each EU citizen. Italy, in 2016, recorded a soil sealing rate of 2.8% of the entire territory. In this context, the urban expansion which occurred in past decades is considered one of the main causes of the increase in flood frequency and intensity in small catchments, causing both social and financial damage. In the present paper, the positive impact of introducing Best Management Practices (BMPs) at urban scale is assessed, with particular regard to the decreasing of flood prone areas...
June 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28632879/reliability-and-agreement-between-metrics-of-cone-spacing-in-adaptive-optics-images-of-the-human-retinal-photoreceptor-mosaic
#7
Daniela Giannini, Giuseppe Lombardo, Letizia Mariotti, Nicholas Devaney, Sebastiano Serrao, Marco Lombardo
Purpose: To assess reliability and agreement among three metrics used to evaluate the distribution of cell distances in adaptive optics (AO) images of the cone mosaic. Methods: Using an AO flood illumination retinal camera, we acquired images of the cone mosaic in 20 healthy subjects and 12 patients with retinal diseases. The three spacing metrics studied were the center-to-center spacing (Scc), the local cone spacing (LCS), and the density recovery profile distance (DRPD)...
June 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28632577/outcome-of-pediatric-forearm-fracture-reductions-performed-by-pediatric-emergency-medicine-providers-compared-with-reductions-performed-by-orthopedic-surgeons-a-retrospective-cohort-study
#8
Donna Milner, Ernest Krause, Karen Hamre, Andrew Flood
OBJECTIVE: The aim of this study was to describe the outcome differences between board-certified orthopedists and pediatric emergency medicine (PEM) physicians conducting forearm fracture reductions. METHODS: We performed an analysis of patients between 1 and 14 years of age who presented to the emergency department (ED) with a forearm fracture requiring reduction. Data collected included reducing provider (PEM or orthopedist) and prereduction, postreduction, and follow-up fracture angles and displacements of both radius and ulna...
June 20, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28630921/increasing-probability-of-mortality-during-indian-heat-waves
#9
Omid Mazdiyasni, Amir AghaKouchak, Steven J Davis, Shahrbanou Madadgar, Ali Mehran, Elisa Ragno, Mojtaba Sadegh, Ashmita Sengupta, Subimal Ghosh, C T Dhanya, Mohsen Niknejad
Rising global temperatures are causing increases in the frequency and severity of extreme climatic events, such as floods, droughts, and heat waves. We analyze changes in summer temperatures, the frequency, severity, and duration of heat waves, and heat-related mortality in India between 1960 and 2009 using data from the India Meteorological Department. Mean temperatures across India have risen by more than 0.5°C over this period, with statistically significant increases in heat waves. Using a novel probabilistic model, we further show that the increase in summer mean temperatures in India over this period corresponds to a 146% increase in the probability of heat-related mortality events of more than 100 people...
June 2017: Science Advances
https://www.readbyqxmd.com/read/28630294/mercury-evidence-for-pulsed-volcanism-during-the-end-triassic-mass-extinction
#10
Lawrence M E Percival, Micha Ruhl, Stephen P Hesselbo, Hugh C Jenkyns, Tamsin A Mather, Jessica H Whiteside
The Central Atlantic Magmatic Province (CAMP) has long been proposed as having a causal relationship with the end-Triassic extinction event (∼201.5 Ma). In North America and northern Africa, CAMP is preserved as multiple basaltic units interbedded with uppermost Triassic to lowermost Jurassic sediments. However, it has been unclear whether this apparent pulsing was a local feature, or if pulses in the intensity of CAMP volcanism characterized the emplacement of the province as a whole. Here, six geographically widespread Triassic-Jurassic records, representing varied paleoenvironments, are analyzed for mercury (Hg) concentrations and Hg/total organic carbon (Hg/TOC) ratios...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28628819/dissolved-gaseous-mercury-formation-and-mercury-volatilization-in-intertidal-sediments
#11
Rute Cesário, Laurier Poissant, Martin Pilote, Nelson J O'Driscoll, Ana M Mota, João Canário
Intertidal sediments of Tagus estuary regularly experiences complex redistribution due to tidal forcing, which affects the cycling of mercury (Hg) between sediments and the water column. This study quantifies total mercury (Hg) and methylmercury (MMHg) concentrations and fluxes in a flooded mudflat as well as the effects on water-level fluctuations on the air-surface exchange of mercury. A fast increase in dissolved Hg and MMHg concentrations was observed in overlying water in the first 10min of inundation and corresponded to a decrease in pore waters, suggesting a rapid export of Hg and MMHg from sediments to the water column...
June 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28624943/hexabromocyclododecane-diastereomers-in-fish-and-suspended-particulate-matter-from-selected-european-waters-trend-monitoring-and-environmental-quality-standard-compliance
#12
Heinz Rüdel, Josef Müller, Jens Nowak, Mathias Ricking, Roland Klein, Matthias Kotthoff
The brominated flame retardant hexabromocyclododecane (HBCD) was monitored in fish and sediment (from one lake) or suspended particulate matter (SPM; from five rivers) at European freshwater sites to study the effects of reduction measures implemented by HBCD producers and users in recent years. Bream (Abramis brama) were sampled annually between 2007 and 2013 in the rivers Götaälv/SE, Rhône/FR, Western Scheldt/NL, Mersey/UK, and Tees/UK and in Lake Belau/DE. Sediment/SPM was taken every second year between 2008 and 2014...
June 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28623795/transport-of-road-salt-contamination-in-karst-aquifers-and-soils-over-multiple-timescales
#13
Heather K Robinson, Elizabeth A Hasenmueller
Road deicing has caused widespread environmental Na(+) and Cl(-) release for decades, yet the transport and retention of these contaminants in karst aquifers and soils are poorly understood. We examined the transport dynamics of Na(+) and Cl(-) from road salt in shallow groundwater during flooding and over seasonal timescales by intensively monitoring an urban and a rural karst spring over approximately 2 years. Furthermore, we used a 20-year dataset for the rural spring to determine how salt retention affected long-term geochemical trends in the shallow groundwater...
June 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28622556/early-chemical-and-ecotoxicological-responses-of-the-varano-lagoon-se-italy-to-a-flood-event
#14
Adele Fabbrocini, Daniele Cassin, Angela Santucci, Tommaso Scirocco, Antonietta Specchiulli, Raffaele D'Adamo
The effects on coastal lagoons of floods resulting from intense rainfall need to be assessed using a multidisciplinary approach, able to describe in real time the occurrence of changes in sediment quality, anticipating risk situations. In the present study the effectiveness as pre-screening tool of the MOT-test, an innovative bioassay that uses sperm motility as endpoint, has been evaluated; its response has been compared with the sediment chemical characterization, in order to determine the effects of a flood event occurred in the Varano lagoon, a poorly anthropized Mediterranean coastal lagoon...
June 13, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28620433/opportunities-for-early-career%C3%A2-members
#15
Lieuwe D Bos, Sabine Bartel, Alexander G Mathioudakis, Emma Flood
Read about upcoming opportunities for @ERStalk Early Career Members http://ow.ly/QFyb30b7iKq.
June 2017: Breathe
https://www.readbyqxmd.com/read/28618658/the-impact-of-multiple-stressors-on-the-biomarkers-response-in-gills-and-liver-of-freshwater-breams-during-different-seasons
#16
Jovana Kostić, Stoimir Kolarević, Margareta Kračun-Kolarević, Mustafa Aborgiba, Zoran Gačić, Momir Paunović, Željka Višnjić-Jeftić, Božidar Rašković, Vesna Poleksić, Mirjana Lenhardt, Branka Vuković-Gačić
Biomarkers attract increasing attention in environmental studies, as a tool for detection of exposure and effects of pollution, from both natural and anthropogenic sources. This study aims to assess the impact of multiple stressors during distinctive seasons, covering also extreme hydrological events (extensive flooding in the mid May 2014), on different levels of biological organization in the liver and gills of three closely related freshwater breams. Our previous study on DNA damage in blood cells of these specimens showed increased DNA damage in June 2014, one month after the flooding event...
June 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28618392/radiocesium-decontamination-of-a-riverside-in-fukushima-japan
#17
Tatsuhiro Nishikiori, Satoshi Suzuki
Extensive decontamination measures have been implemented in the area affected by the Fukushima Dai-ichi nuclear disaster. Typical decontamination measures, such as removing topsoil of several centimeters in depth, are not suitable for rivers where contaminated sediments have been deposited. A decontamination measure was tested that considered the spatial distribution of radiocesium at the lower part of a tributary of the Abukuma River in Fukushima. The radiocesium distribution in the flood channel was vertically and horizontally highly heterogeneous...
June 12, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28618318/effect-of-differential-forest-management-on-land-use-change-luc-in-a-tropical-hill-forest-of-malaysia
#18
Kazi Mohammad Masum, Asyraf Mansor, Shahrul Anuar Mohd Sah, Hwee San Lim
Forest ownership is considered as a vital aspect for sustainable management of forest and its associated biodiversity. The Global Forest Resources Assessment 2015 reported that privately owned forest area are increasing on a global scale, but deforestation was found very active in privately owned hill forest areas of Malaysia. Penang State was purposively chosen as it has been experiencing rapid and radical changes due to urban expansion over the last three decades. In this study, analyses of land-use changes were done by PCI Geomatica using Landsat images from 1991 to 2015, future trends of land-use change were assessed using EXCEL forecast function, and its impact on the surrounding environment were conducted by reviewing already published articles on changing environment of the study area...
June 12, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28616870/hazard-experience-geophysical-vulnerability-and-flood-risk-perceptions-in-a-postdisaster-city-the-case-of-new-orleans
#19
Kevin Fox Gotham, Richard Campanella, Katie Lauve-Moon, Bradford Powers
This article investigates the determinants of flood risk perceptions in New Orleans, Louisiana (United States), a deltaic coastal city highly vulnerable to seasonal nuisance flooding and hurricane-induced deluges and storm surges. Few studies have investigated the influence of hazard experience, geophysical vulnerability (hazard proximity), and risk perceptions in cities undergoing postdisaster recovery and rebuilding. We use ordinal logistic regression techniques to analyze experiential, geophysical, and sociodemographic variables derived from a survey of 384 residents in seven neighborhoods...
June 14, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28616065/human-management-and-hybridization-shape-treegourd-fruits-in-the-brazilian-amazon-basin
#20
Priscila Ambrósio Moreira, Cédric Mariac, Leila Zekraoui, Marie Couderc, Doriane Picanço Rodrigues, Charles R Clement, Yves Vigouroux
Local people's perceptions of cultivated and wild agrobiodiversity, as well as their management of hybridization are still understudied in Amazonia. Here we analyze domesticated treegourd (Crescentia cujete), whose versatile fruits have technological, symbolic, and medicinal uses. A wild relative (C. amazonica) of the cultivated species grows spontaneously in Amazonian flooded forests. We demonstrated, using whole chloroplast sequences and nuclear microsatellites, that the two species are strongly differentiated...
July 2017: Evolutionary Applications
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