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https://www.readbyqxmd.com/read/29457743/a-framework-for-complexity-in-palliative-care-a-qualitative-study-with-patients-family-carers-and-professionals
#1
Sophie Pask, Cathryn Pinto, Katherine Bristowe, Liesbeth van Vliet, Caroline Nicholson, Catherine J Evans, Rob George, Katharine Bailey, Joanna M Davies, Ping Guo, Barbara A Daveson, Irene J Higginson, Fliss Em Murtagh
BACKGROUND: Palliative care patients are often described as complex but evidence on complexity is limited. We need to understand complexity, including at individual patient-level, to define specialist palliative care, characterise palliative care populations and meaningfully compare interventions/outcomes. AIM: To explore palliative care stakeholders' views on what makes a patient more or less complex and insights on capturing complexity at patient-level. DESIGN: In-depth qualitative interviews, analysed using Framework analysis...
February 1, 2018: Palliative Medicine
https://www.readbyqxmd.com/read/29456268/evidence-for-ubiquitous-preferential-particle-orientation-in-representative-oceanic-shear-flows
#2
Aditya R Nayak, Malcolm N McFarland, James M Sullivan, Michael S Twardowski
In situ measurements were undertaken to characterize particle fields in undisturbed oceanic environments. Simultaneous, co-located depth profiles of particle fields and flow characteristics were recorded using a submersible holographic imaging system and an acoustic Doppler velocimeter, under different flow conditions and varying particle concentration loads, typical of those found in coastal oceans and lakes. Nearly one million particles with major axis lengths ranging from ∼14 μm to 11.6 mm, representing diverse shapes, sizes, and aspect ratios were characterized as part of this study...
January 2018: Limnology and Oceanography
https://www.readbyqxmd.com/read/29455472/double-digest-rad-sequencing-outperforms-microsatellite-loci-at-assigning-paternity-and-estimating-relatedness-a-proof-of-concept-in-a-highly-promiscuous-bird
#3
Derrick J Thrasher, Bronwyn G Butcher, Leonardo Campagna, Michael S Webster, Irby J Lovette
Information on genetic relationships among individuals is essential to many studies of the behavior and ecology of wild organisms. Parentage and relatedness assays based on large numbers of SNP loci hold substantial advantages over the microsatellite markers traditionally used for these purposes. We present a double-digest restriction site-associated DNA sequencing (ddRAD-seq) analysis pipeline that, as such, simultaneously achieves the SNP discovery and genotyping steps and which is optimized to return a statistically powerful set of SNP markers (typically 150-600 after stringent filtering) from large numbers of individuals (up to 240 per run)...
February 17, 2018: Molecular Ecology Resources
https://www.readbyqxmd.com/read/29455464/disparities-in-second-generation-dna-metabarcoding-results-exposed-with-accessible-and-repeatable-workflows
#4
Timothy J Divoll, Veronica A Brown, Jeff Kinne, Gary F McCracken, Joy M O'Keefe
Different second-generation sequencing technologies may have taxon-specific biases when DNA metabarcoding prey in predator feces. Our major objective was to examine differences in prey recovery from bat guano across two different sequencing workflows using the same fecal DNA extracts. We compared results between the Ion Torrent PGM and the Illumina MiSeq with similar library preparations and the same analysis pipeline. We focus on repeatability and provide an R Notebook in an effort toward transparency for future methodological improvements...
February 17, 2018: Molecular Ecology Resources
https://www.readbyqxmd.com/read/29455279/divergent-selection-of-pattern-recognition-receptors-in-mammals-with-different-ecological-characteristics
#5
Ran Tian, Meixiu Chen, Simin Chai, Xinghua Rong, Bingyao Chen, Wenhua Ren, Shixia Xu, Guang Yang
Pattern recognition receptors (PRRs) are specialized receptors that represent a key component of the host innate immune system. Whether molecular evolutionary history of different PRR classes have involved different genetic mechanisms underlying diverse pathogen environment in mammals, and whether distinct ecology of mammals may have imposed divergent selective pressures on the evolution of the PRRs, remained unknown. To test these hypotheses, we investigated the characterization of 20 genes belonging to four PRR classes in mammals...
February 17, 2018: Journal of Molecular Evolution
https://www.readbyqxmd.com/read/29454734/management-of-arthropod-vector-data-social-and-ecological-dynamics-facing-the-one-health-perspective
#6
REVIEW
Giovanni Benelli, Mary Frances Duggan
Emerging infectious diseases (EIDs) are spread by direct and/or indirect contacts between a pathogen or parasite and their hosts. Arthropod vectors have evolved as excellent bloodsuckers, providing an elegant transportation mode for a wide number of infectious agents. The nature of pathogen and parasite transfer and the models used to predict how a disease might spread are magnified in complexity when an arthropod vector is part of the disease cycle. One Health is a worldwide strategy for expanding interdisciplinary collaborations and communications in all aspects of health care for humans, animals and the environment...
February 15, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29453767/increasing-connectivity-between-metapopulation-ecology-and-landscape-ecology
#7
Paige E Howell, Erin Muths, Blake R Hossack, Brent H Sigafus, Richard B Chandler
Metapopulation ecology and landscape ecology aim to understand how spatial structure influences ecological processes, yet these disciplines address the problem using fundamentally different modeling approaches. Metapopulation models describe how the spatial distribution of patches affects colonization and extinction, but often do not account for the heterogeneity in the landscape between patches. Models in landscape ecology use detailed descriptions of landscape structure, but often without considering colonization and extinction dynamics...
February 17, 2018: Ecology
https://www.readbyqxmd.com/read/29453689/sustained-sensorimotor-control-as-intermittent-decisions-about-prediction-errors-computational-framework-and-application-to-ground-vehicle-steering
#8
Gustav Markkula, Erwin Boer, Richard Romano, Natasha Merat
A conceptual and computational framework is proposed for modelling of human sensorimotor control and is exemplified for the sensorimotor task of steering a car. The framework emphasises control intermittency and extends on existing models by suggesting that the nervous system implements intermittent control using a combination of (1) motor primitives, (2) prediction of sensory outcomes of motor actions, and (3) evidence accumulation of prediction errors. It is shown that approximate but useful sensory predictions in the intermittent control context can be constructed without detailed forward models, as a superposition of simple prediction primitives, resembling neurobiologically observed corollary discharges...
February 16, 2018: Biological Cybernetics
https://www.readbyqxmd.com/read/29453252/ecology-and-biotechnological-potential-of-bacteria-belonging-to-the-pseudovibrio-genus
#9
Stefano Romano
Bacteria belonging to the genus Pseudovibrio have been isolated worldwide from a great variety of marines sources as both free living and host associated. So far, the available data depict a group of Alphaproteobacteria characterized by a versatile metabolism, which allows them to use a variety of substrates to meet their carbon, nitrogen, sulfur, and phosphorous requirements. Additionally, Pseudovibrio -related bacteria have been shown to proliferate under extreme oligotrophic conditions, tolerate high heavy metal concentrations, and metabolize potentially toxic compounds...
February 16, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29450770/how-can-water-quality-be-improved-when-the-urban-waste-water-directive-has-been-fulfilled-a-case-study-of-the-lot-river-france
#10
Josette Garnier, Antsiva Ramarson, Vincent Thieu, Julien Némery, Sylvain Théry, Gilles Billen, Alexandra Coynel
The Lot river, a major tributary of the downstream Garonne river, the largest river on the Northern side of the Pyrenees Mountains, was intensively studied in the 1970s. A pioneering program called "Lot Rivière Claire" provided a diagnosis of water quality at the scale of the whole watershed and proposed an ambitious program to manage nutrient pollution and eutrophication largely caused by urban wastewater releases. Later on, the implementation of European directives from 1991 to 2000 resulted in the nearly complete treatment of point sources of pollution in spite of a doubling of the basin's population...
February 15, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29450674/risk-assessment-of-pesticides-in-estuaries-a-review-addressing-the-persistence-of-an-old-problem-in-complex-environments
#11
Nagore Cuevas, Marta Martins, Pedro M Costa
Estuaries, coastal lagoons and other transition ecosystems tend to become the ultimate reservoirs of pollutants transported by continental runoff, among which pesticides constitute the class of most concern. High amounts of dissolved and particulated organic matter greatly contribute to the accumulation of pesticides that eventually become trapped in sediments or find their way along food chains. Perhaps not so surprisingly, it is common to find elevated levels of pesticides in estuarine sediments decades after their embargo...
February 15, 2018: Ecotoxicology
https://www.readbyqxmd.com/read/29450661/monitoring-water-quality-in-a-hypereutrophic-reservoir-using-landsat-etm-and-oli-sensors-how-transferable-are-the-water-quality-algorithms
#12
Eliza S Deutsch, Ibrahim Alameddine, Mutasem El-Fadel
The launch of the Landsat 8 in February 2013 extended the life of the Landsat program to over 40 years, increasing the value of using Landsat to monitor long-term changes in the water quality of small lakes and reservoirs, particularly in poorly monitored freshwater systems. Landsat-based water quality hindcasting often incorporate several Landsat sensors in an effort to increase the temporal range of observations; yet the transferability of water quality algorithms across sensors remains poorly examined. In this study, several empirical algorithms were developed to quantify chlorophyll-a, total suspended matter (TSM), and Secchi disk depth (SDD) from surface reflectance measured by Landsat 7 ETM+ and Landsat 8 OLI sensors...
February 15, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29449838/the-divergence-in-bacterial-components-associated-with-bactrocera-dorsalis-across-developmental-stages
#13
Xiaofeng Zhao, Xiaoyu Zhang, Zhenshi Chen, Zhen Wang, Yongyue Lu, Daifeng Cheng
Eco-evolutionary dynamics of microbiotas at the macroscale level are largely driven by ecological variables. The diet and living environment of the oriental fruit fly, Bactrocera dorsalis , diversify during development, providing a natural system to explore convergence, divergence, and repeatability in patterns of microbiota dynamics as a function of the host diet, phylogeny, and environment. Here, we characterized the microbiotas of 47 B. dorsalis individuals from three distinct populations by 16S rRNA amplicon sequencing...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29449815/combinatorial-codes-and-labeled-lines-how-insects-use-olfactory-cues-to-find-and-judge-food-mates-and-oviposition-sites-in-complex-environments
#14
REVIEW
Alexander Haverkamp, Bill S Hansson, Markus Knaden
Insects, including those which provide vital ecosystems services as well as those which are devastating pests or disease vectors, locate their resources mainly based on olfaction. Understanding insect olfaction not only from a neurobiological but also from an ecological perspective is therefore crucial to balance insect control and conservation. However, among all sensory stimuli olfaction is particularly hard to grasp. Our chemical environment is made up of thousands of different compounds, which might again be detected by our nose in multiple ways...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29449491/species-turnover-promotes-the-importance-of-bee-diversity-for-crop-pollination-at-regional-scales
#15
Rachael Winfree, James R Reilly, Ignasi Bartomeus, Daniel P Cariveau, Neal M Williams, Jason Gibbs
Ecologists have shown through hundreds of experiments that ecological communities with more species produce higher levels of essential ecosystem functions such as biomass production, nutrient cycling, and pollination, but whether this finding holds in nature (that is, in large-scale and unmanipulated systems) is controversial. This knowledge gap is troubling because ecosystem services have been widely adopted as a justification for global biodiversity conservation. Here we show that, to provide crop pollination in natural systems, the number of bee species must increase by at least one order of magnitude compared with that in field experiments...
February 16, 2018: Science
https://www.readbyqxmd.com/read/29448174/extracellular-vesicles-new-players-in-cell-cell-communication-in-aquatic-environments
#16
REVIEW
Daniella Schatz, Assaf Vardi
Communication between microorganisms in aquatic environments can influence ecosystem function and determine the structure and composition of microbial populations. This microbial cross talk can be mediated by excretion of specialized metabolites or extracellular vesicles (EVs). Recently it has become apparent that cells across all domains of life produce EVs that may convey specific targeted signals that can modulate cell fate, morphology and susceptibility to viruses. The vast majority of knowledge about EVs is derived from studies of mammalian tissues, parasitic host-pathogen interactions and model bacterial systems...
February 12, 2018: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/29448023/simulating-spatial-distribution-of-coastal-soil-carbon-content-using-a-comprehensive-land-surface-factor-system-based-on-remote-sensing
#17
Yuan Chi, Honghua Shi, Wei Zheng, Jingkuan Sun
Surface soil carbon content (SCC) in coastal area is affected by complex factors, and revealing the SCC spatial distribution is considerably significant for judging the quantity of stored carbon and identifying the driving factors of SCC variation. A comprehensive land surface factor system (CLSFS) was established; it utilized the ecological significances of remote sensing data and included four-class factors, namely, spectrum information, ecological indices, spatial location, and land cover. Different simulation algorithms, including single-factor regression (SFR), multiple-factor regression (MFR), partial least squares regression (PLSR), and back propagation neural network (BPNN), were adopted to conduct the surface (0-30cm) SCC mapping in the Yellow River Delta in China, and a 10-fold cross validation approach was used to validate the uncertainty and accuracy of the algorithms...
February 12, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29448022/photosynthesis-and-mineralogy-of-jania-rubens-at-low-ph-high-pco-2-a-future-perspective
#18
Lucia Porzio, Maria Cristina Buia, Viviana Ferretti, Maurizio Lorenti, Manuela Rossi, Marco Trifuoggi, Alessandro Vergara, Carmen Arena
Corallinales (Rhodophyta) are high Mg-calcite macroalgae and are considered among the most vulnerable organisms to ocean acidification (OA). These sensitive species play fundamental roles in coastal systems as food source and settlement promoters as well as being involved in reef stabilization, and water carbonate balance. At present only a few studies are focused on erect calcifying macroalgae under low pH/high pCO 2 and the contrasting results make difficult to predict the ecological consequences of the OA on the coralline algae...
February 12, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29447760/climatic-controls-on-later-stone-age-human-adaptation-in-africa-s-southern-cape
#19
Brian M Chase, J Tyler Faith, Alex Mackay, Manuel Chevalier, Andrew S Carr, Arnoud Boom, Sophak Lim, Paula J Reimer
Africa's southern Cape is a key region for the evolution of our species, with early symbolic systems, marine faunal exploitation, and episodic production of microlithic stone tools taken as evidence for the appearance of distinctively complex human behavior. However, the temporally discontinuous nature of this evidence precludes ready assumptions of intrinsic adaptive benefit, and has encouraged diverse explanations for the occurrence of these behaviors, in terms of regional demographic, social and ecological conditions...
January 2018: Journal of Human Evolution
https://www.readbyqxmd.com/read/29447397/barriers-and-facilitators-of-diabetes-services-in-nepal-a-qualitative-evaluation
#20
Nicole Ide, James P LoGerfo, Biraj Karmacharya
For the past three decades, the burden of diabetes in Nepal has been steadily increasing, with an estimated 3% annual increase since the year 2000. Although the burden is increasing, the methods of addressing the challenge have remained largely unchanged. This study sought to assess the current state of diabetes services provided by health facilities and to identify the major barriers that people with diabetes commonly face in Nepal. For this qualitative study, we selected five health facilities of varying levels and locations...
February 13, 2018: Health Policy and Planning
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