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https://www.readbyqxmd.com/read/28214123/a-tool-for-cost-effectiveness-analysis-of-field-scale-sediment-bound-phosphorus-mitigation-measures-and-application-to-analysis-of-spatial-and-temporal-targeting-in-the-lunan-water-catchment-scotland
#1
Andy Vinten, James Sample, Adekunle Ibiyemi, Yakubu Abdul-Salam, Marc Stutter
The cost-effectiveness of six edge-of-field measures for mitigating diffuse pollution from sediment bound phosphorus (P) runoff from temperate arable farmland is analysed at catchment/field scales. These measures were: buffer strips, permanent grassland in the lowest 7% of arable fields, dry detention bunds, wetlands, and temporary barriers such as sediment fences. Baseline field P export was estimated using export coefficients (low risk crops) or a modified Universal Soil Loss Equation (high risk crops). The impact of measures was estimated using simple equations...
February 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28214119/persistent-organic-pollutants-in-the-olifants-river-basin-south-africa-bioaccumulation-and-trophic-transfer-through-a-subtropical-aquatic-food-web
#2
Vera Verhaert, Nadine Newmark, Wendy D'Hollander, Adrian Covaci, Wynand Vlok, Victor Wepener, Abraham Addo-Bediako, Antoinette Jooste, Johannes Teuchies, Ronny Blust, Lieven Bervoets
This study investigates the trophic transfer of persistent organic pollutants (POPs: PCBs, PBDEs, OCPs and PFASs) in the subtropical aquatic ecosystem of the Olifants River Basin (South Africa) by means of trophic magnification factors (TMFs). Relative trophic levels were determined by stable isotope analysis. POP levels in surface water, sediment and biota were low. Only ∑DDTs levels in fish muscle (<LOQ-61ng/g ww) were comparable or higher than values from other temperate and tropical regions. Significant positive relationships between relative trophic level and PCB, DDT and HCH concentrations were observed so trophic levels play an important role in the movement of contaminants through the food web...
February 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28213106/oral-treatment-with-essential-oil-of-hyptis-spicigera-lam-lamiaceae-reduces-acute-pain-and-inflammation-in-mice-potential-interactions-with-transient-receptor-potential-trp-ion-channels
#3
Róli Rodrigues Simões, Igor Dos Santos Coelho, Stella Célio Junqueira, Glauce Regina Pigatto, Marcos José Salvador, Adair Roberto Soares Santos, Felipe Meira de Faria
ETHNOPHARMACOLOGICAL RELEVANCE: The genus Hyptis comprehends almost 400 species widespread in tropical and temperate regions of America. The use of Hyptis spicigera Lam. (Lamiaceae) is reported in traditional medicine due to its gastroprotective, anti-inflammatory and analgesic properties. AIM OF THE STUDY: The rationale of this study was to investigate the potential use of the essential oil of H. spicigera (EOHs) as analgesic. MATERIAL AND METHODS: The antinociceptive effect of EOHs was verified analyzing acute nocifensive behavior of mice induced by chemical noxious stimuli [i...
February 14, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28211487/natural-persistence-of-the-coastal-plant-glehnia-littoralis-along-temperate-sandy-coasts
#4
Hong-Xiao Yang, Jian-Min Chu, Xiao-Shan Liu
We studied germination behaviors and persistence mechanism of wild Glehnia littoralis, a typical coastal species at temperate sandy coasts of the North Pacific Ocean, and tested the hypothesis that the coastal plants may have evolved special seeds adapting to the coasts, by which they recruit and persist easily, occupying the coasts as ideal habitats. In the Shandong Peninsula, China, we investigated temperature and moisture conditions of coast sand in relation to germination and evaluated effects of sand burial, seawater immersion and sowing time on germination...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28210959/glass-transition-in-hard-core-fluids-and-beyond-using-an-effective-static-structure-in-the-mode-coupling-theory
#5
S Amokrane, F Tchangnwa Nya, J M Ndjaka
The dynamical arrest in classical fluids is studied using a simple modification of the mode coupling theory (MCT) aimed at correcting its overestimation of the tendency to glass formation while preserving its overall structure. As in previous attempts, the modification is based on the idea of tempering the static pair correlations used as input. It is implemented in this work by computing the static structure at a different state point than the one used to solve the MCT equation for the intermediate scattering function, using the pure hard-sphere glass for calibration...
February 2017: European Physical Journal. E, Soft Matter
https://www.readbyqxmd.com/read/28208238/effects-of-extreme-drought-on-specific-leaf-area-of-grassland-species-a-meta-analysis-of-experimental-studies-in-temperate-and-sub-mediterranean-systems
#6
C Wellstein, P Poschlod, A Gohlke, S Chelli, G Campetella, S Rosbakh, R Canullo, J Kreyling, A Jentsch, C Beierkuhnlein
Here, we conducted a meta-analysis of experimental drought manipulation studies using rain-out shelters in five sites of natural grassland ecosystems of Europe. The single studies assess the effects of extreme drought on the intraspecific variation of the specific leaf area (SLA), a proxy of plant growth. We evaluate and compare the effect size of the SLA response for the functional groups of forbs and grasses in temperate and sub-Mediterranean systems. We hypothesized that the functional groups of grasses and forbs from temperate grassland systems have different strategies in short-term drought response, measured as adjustment of SLA, with SLA-reduction in grasses and SLA-maintenance in forbs...
February 16, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28205543/ontogenetic-loops-in-habitat-use-highlight-the-importance-of-littoral-habitats-for-early-life-stages-of-oceanic-fishes-in-temperate-waters
#7
Patrick Polte, Paul Kotterba, Dorothee Moll, Lena von Nordheim
General concepts of larval fish ecology in temperate oceans predominantly associate dispersal and survival to exogenous mechanisms such as passive drift along ocean currents. However, for tropical reef fish larvae and species in inland freshwater systems behavioural aspects of habitat selection are evidently important components of dispersal. This study is focused on larval Atlantic herring (Clupea harengus) distribution in a Baltic Sea retention area, free of lunar tides and directed current regimes, considered as a natural mesocosm...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28205160/non-fermentative-gram-negative-rods-bacteremia-in-children-with-cancer-a-14-year-single-center-experience
#8
D Averbuch, C Avaky, M Harit, P Stepensky, I Fried, T Ben-Ami, V Temper, Y Peled, H Troen, R Masarwa, W Abu Ahmad, M Weintraub, S Revel-Vilk, D Engelhard
PURPOSE: Data on non-fermentative Gram-negative rods (NFGNR) bacteremia in children with malignancies are limited. The aim of this study was to present clinical picture, antimicrobial susceptibility pattern, risk factors for resistance and outcome in NFGNR bacteremia in children with cancer. METHODS: All episodes of NFGNR bacteremia occurring during 2001-2014 in children with cancer in a tertiary-care hospital were retrospectively analyzed. Pseudomonas and Acinetobacter spp...
February 15, 2017: Infection
https://www.readbyqxmd.com/read/28203240/experimental-air-warming-of-a-stylosanthes-capitata-vogel-dominated-tropical-pasture-affects-soil-respiration-and-nitrogen-dynamics
#9
Miquel A Gonzalez-Meler, Lais B C Silva, Eduardo Dias-De-Oliveira, Charles E Flower, Carlos A Martinez
Warming due to global climate change is predicted to reach 2°C in tropical latitudes. There is an alarming paucity of information regarding the effects of air temperature on tropical agroecosystems, including foraging pastures. Here, we investigated the effects of a 2°C increase in air temperature over ambient for 30 days on an established tropical pasture (Ribeirão Preto, São Paulo, Brazil) dominated by the legume Stylosanthes capitata Vogel, using a T-FACE (temperature free-air controlled enhancement) system...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28202275/restoring-rocky-intertidal-communities-lessons-from-a-benthic-macroalgal-ecosystem-engineer
#10
REVIEW
Alecia Bellgrove, Prudence F McKenzie, Hayley Cameron, Jacqueline B Pocklington
As coastal population growth increases globally, effective waste management practices are required to protect biodiversity. Water authorities are under increasing pressure to reduce the impact of sewage effluent discharged into the coastal environment and restore disturbed ecosystems. We review the role of benthic macroalgae as ecosystem engineers and focus particularly on the temperate Australasian fucoid Hormosira banksii as a case study for rocky intertidal restoration efforts. Research focussing on the roles of ecosystem engineers is lagging behind restoration research of ecosystem engineers...
February 12, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28201917/parallel-tempering-monte-carlo-combined-with-clustering-euclidean-metric-analysis-to-study-the-thermodynamic-stability-of-lennard-jones-nanoclusters
#11
Henrique M Cezar, Gustavo G Rondina, Juarez L F Da Silva
A basic requirement for an atom-level understanding of nanoclusters is the knowledge of their atomic structure. This understanding is incomplete if it does not take into account temperature effects, which play a crucial role in phase transitions and changes in the overall stability of the particles. Finite size particles present intricate potential energy surfaces, and rigorous descriptions of temperature effects are best achieved by exploiting extended ensemble algorithms, such as the Parallel Tempering Monte Carlo (PTMC)...
February 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28199941/effect-directed-analysis-reveals-inhibition-of-zebrafish-uptake-transporter-oatp1d1-by-caulerpenyne-a-major-secondary-metabolite-from-the-invasive-marine-alga-caulerpa-taxifolia
#12
P Marić, M Ahel, I Senta, S Terzić, I Mikac, A Žuljević, T Smital
Caulerpa taxifolia is a marine alga of tropical and subtropical distribution and a well-known invasive species in several temperate regions. Its invasiveness mainly stems from the production of secondary metabolites, some of which are toxic or repellent substances. In this study we investigated the possible inhibitory effects of C. taxifolia secondary metabolites on the activity of two zebrafish (Danio rerio) uptake transporters that transport organic anions (Oatp1d1) and cations (Oct1). Both transporters were transiently transfected and overexpressed in human embryonic kidney HEK293T cells...
February 2, 2017: Chemosphere
https://www.readbyqxmd.com/read/28197405/on-the-helix-propensity-in-generalized-born-solvent-descriptions-of-modeling-the-dark-proteome
#13
Mark A Olson
Intrinsically disordered proteins that populate the so-called "Dark Proteome" offer challenging benchmarks of atomistic simulation methods to accurately model conformational transitions on a multidimensional energy landscape. This work explores the application of parallel tempering with implicit solvent models as a computational framework to capture the conformational ensemble of an intrinsically disordered peptide derived from the Ebola virus protein VP35. A recent X-ray crystallographic study reported a protein-peptide interface where the VP35 peptide underwent a folding transition from a disordered form to a helix-β-turn-helix topological fold upon molecular association with the Ebola protein NP...
2017: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/28196696/patients-hospitalized-abroad-as-importers-of-multiresistant-bacteria-a-cross-sectional-study
#14
Tamim Khawaja, Juha Kirveskari, Sara Johansson, Juuso Väisänen, Aurora Djupsjöbacka, Annika Nevalainen, Anu Kantele
OBJECTIVES: The pandemic spread of multidrug-resistant (MDR) bacteria poses a threat to healthcare worldwide, with highest prevalence in indigent regions of the (sub)tropics. As hospitalization constitutes a major risk factor for colonization, infection control management in low-prevalence countries urgently needs background data on patients hospitalized abroad. METHODS: We collected data on 1122 patients who, after hospitalization abroad, were treated at the Helsinki University Hospital between 2010 and 2013...
February 11, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28196337/are-seaward-pneumatophore-fringes-transitional-between-mangrove-and-lower-shore-system-compartments
#15
R S K Barnes
Work in temperate New Zealand has concluded that seaward fringes of Avicennia pneumatophores (P) form an 'important ecological transitional environment' between seagrass (Z) and mangrove (M), supporting intermediate macrofaunal numbers and biodiversity (Alfaro, 2006). This study re-examined that hypothesis in subtropical Moreton Bay, Queensland, and investigated its dependence on the nature of the lower-shore habitat; i.e. whether seagrass or sandflat (S). Adjacent macrobenthic assemblages across 45 m deep Z:P:M and S:P:M interfaces were compared uni- and multivariately and via various assemblage metrics...
January 31, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/28196034/long-term-results-after-total-knee-arthroplasty-with-contemporary-rotating-hinge-prostheses
#16
Umberto Cottino, Matthew P Abdel, Kevin I Perry, Kristin C Mara, David G Lewallen, Arlen D Hanssen
BACKGROUND: Total knee arthroplasty (TKA) with a rotating-hinge prosthesis is considered a salvage procedure. While excellent immediate stability is achieved, the historically high failure rate has tempered its use. The goal of this study was to determine clinical outcomes, radiographic results, and survivorship after TKA with contemporary rotating-hinge components. METHODS: We identified 408 consecutive TKAs performed with rotating-hinge components for nononcologic indications from 2002 to 2012 at a single academic institution...
February 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28195464/combining-the-martini-and-structure-based-coarse-grained-approaches-for-the-molecular-dynamics-studies-of-conformational-transitions-in-proteins
#17
Adolfo B Poma, Marek Cieplak, Panagiotis E Theodorakis
The application of coarse-grain (CG) models in biology is essential to access large length and time scales required for the description of many biological processes. The ELNEDIN protein model is based on the well-known MARTINI CG force-field and incorporates additionally harmonic bonds of a certain spring constant within a defined cutoff distance between pairs of residues, in order to preserve the native structure of the protein. In this case, the use of unbreakable harmonic bonds hinders the study of unfolded protein structures and unfolding processes...
February 14, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28195150/molecular-dietary-analysis-of-two-sympatric-felids-in-the-mountains-of-southwest-china-biodiversity-hotspot-and-conservation-implications
#18
Mengyin Xiong, Dajun Wang, Hongliang Bu, Xinning Shao, Dan Zhang, Sheng Li, Rongjiang Wang, Meng Yao
Dietary information is lacking in most of small to mid-sized carnivores due to their elusive predatory behaviour and versatile feeding habits. The leopard cat (LPC; Prionailurus bengalensis) and the Asiatic golden cat (AGC; Catopuma temminckii) are two important yet increasingly endangered carnivore species in the temperate mountain forest ecosystem in Southwest China, a global biodiversity hotspot and a significant reservoir of China's endemic species. We investigated the vertebrate prey of the two sympatric felids using faecal DNA and a next-generation sequencing (NGS)/metabarcoding approach...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28193575/applying-sewage-epidemiology-approach-to-estimate-illicit-drug-consumption-in-a-tropical-context-bias-related-to-sewage-temperature-and-ph
#19
Damien A Devault, Yves Lévi, Sara Karolak
Illicit drug consumption can be estimated from drug target residue (DTR) in wastewater, with the reliability of results being partly linked to DTR stability in the sewage network. However, wastewater temperature and pH drive the stability of molecules and, in this context, tropical conditions must be studied to specify the impact of residence time in the sewage network on DTR degradation. Warmth enhances biotic and abiotic processes such as degradation, leading to a decrease in oxygen content, and consequently, early diagenesis conditions in wastewater...
February 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28192774/irritability-in-child-and-adolescent-psychopathology-an-integrative-review-for-icd-11
#20
REVIEW
Spencer C Evans, Jeffrey D Burke, Michael C Roberts, Paula J Fite, John E Lochman, Francisco R de la Peña, Geoffrey M Reed
In preparation for the World Health Organization's development of the Eleventh Revision of the International Classification of Diseases and Related Health Problems (ICD-11) chapter on Mental and Behavioral Disorders, this article reviews the literature pertaining to severe irritability in child and adolescent psychopathology. First, research on severe mood dysregulation suggests that youth with irritability and temper outbursts, among other features of hyperactivity and arousal, demonstrate cross-sectional correlates and developmental outcomes that distinguish them from youth with bipolar disorder...
January 17, 2017: Clinical Psychology Review
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