keyword
MENU ▼
Read by QxMD icon Read
search

order set or order sets or carepath or care path

keyword
https://www.readbyqxmd.com/read/28646776/characterizing-the-pahs-in-surface-waters-and-snow-in-the-athabasca-region-implications-for-identifying-hydrological-pathways-of-atmospheric-deposition
#1
S J Birks, S Cho, E Taylor, Y Yi, J J Gibson
The composition of polycyclic aromatic hydrocarbons present in snow and surface waters in the Athabasca Oil Sands Region (AOSR) was characterized in order to identify major contributors to the organics detected in rivers and lakes in the region. PAH concentrations, measured by three monitoring programs in 2011, were used to compare the PAH compositions of snow and surface waters across the AOSR. The 2011 dataset includes total (dissolved+particulate) concentrations of thirty-four parent and alkylated PAH compounds in 105 snow, 272 river, and 3 lake samples...
June 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28646167/effectively-infinite-optical-path-length-created-using-a-simple-cubic-photonic-crystal-for-extreme-light-trapping
#2
Brian J Frey, Ping Kuang, Mei-Li Hsieh, Jian-Hua Jiang, Sajeev John, Shawn-Yu Lin
A 900 nm thick TiO2 simple cubic photonic crystal with lattice constant 450 nm was fabricated and used to experimentally validate a newly-discovered mechanism for extreme light-bending. Absorption enhancement was observed extending 1-2 orders of magnitude over that of a reference TiO2 film. Several enhancement peaks in the region from 600-950 nm were identified, which far exceed both the ergodic fundamental limit and the limit based on surface-gratings, with some peaks exceeding 100 times enhancement...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28645511/lamellae-spatial-distribution-modulates-fracture-behavior-and-toughness-of-african-pangolin-scales
#3
Michael J Chon, Matthew Daly, Bin Wang, Xianghui Xiao, Alireza Zaheri, Marc A Meyers, Horacio D Espinosa
Pangolin scales form a durable armor whose hierarchical structure offers an avenue towards high performance bio-inspired materials design. In this study, the fracture resistance of African pangolin scales is examined using single edge crack three-point bend fracture testing in order to understand toughening mechanisms arising from the structures of natural mammalian armors. In these mechanical tests, the influence of material orientation and hydration level are examined. The fracture experiments reveal an exceptional fracture resistance due to crack deflection induced by the internal spatial orientation of lamellae...
June 10, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28644636/path-controlled-time-reordering-of-paired-photons-in-a-dressed-three-level-cascade
#4
Samir Bounouar, Max Strauß, Alexander Carmele, Peter Schnauber, Alexander Thoma, Manuel Gschrey, Jan-Hindrik Schulze, André Strittmatter, Sven Rodt, Andreas Knorr, Stephan Reitzenstein
The two-photon dressing of a "three-level ladder" system, here the ground state, the exciton, and the biexciton of a semiconductor quantum dot, leads to new eigenstates and allows one to manipulate the time ordering of the paired photons without unitary postprocessing. We show that, after spectral postselection of the single dressed states, the time ordering of the cascaded photons can be removed or conserved. Our joint experimental and theoretical study demonstrates the high potential of a "ladder" system to be a versatile source of orthogonally polarized, bunched or antibunched pairs of photons...
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28644616/importance-of-a-fully-anharmonic-treatment-of-equilibrium-isotope-fractionation-properties-of-dissolved-ionic-species-as-evidenced-by-li-aq
#5
Romain Dupuis, Magali Benoit, Mark E Tuckerman, Merlin Méheut
Equilibrium fractionation of stable isotopes is critically important in fields ranging from chemistry, including medicinal chemistry, electrochemistry, geochemistry, and nuclear chemistry, to environmental science. The dearth of reliable estimates of equilibrium fractionation factors, from experiment or from natural observations, has created a need for accurate computational approaches. Because isotope fractionation is a purely quantum mechanical phenomenon, exact calculation of fractionation factors is nontrivial...
June 23, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28641272/aggregation-analysis-for-competitive-multiagent-systems-with-saddle-points-via-switching-strategies
#6
Liying Zhu, Zhengrong Xiang
This paper addresses the aggregation issues of competitive multiagent systems (CMASs) consisting of competitive agents with multimodes and saddle points. In such CMASs, due to existing mutual competitions, every agent is equipped with finite multimodes, and every mode in any agent is described as a second-order linear time-invariant (LTI) control system. When the origin is the same saddle point of all modes of agents, to investigate aggregation of the CMASs with switching strategies, we first use switched LTI systems with saddle points to formulate such CMASs...
June 16, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28630661/intrainsular-connectivity-and-somatosensory-responsiveness-in-young-children-with-asd
#7
Michelle D Failla, Brittany R Peters, Haleh Karbasforoushan, Jennifer H Foss-Feig, Kimberly B Schauder, Brynna H Heflin, Carissa J Cascio
BACKGROUND: The human somatosensory system comprises dissociable paths for discriminative and affective touch, reflected in separate peripheral afferent populations and distinct cortical targets. Differences in behavioral and neural responses to affective touch may have an important developmental role in early social experiences, which are relevant for autism spectrum disorder (ASD). METHODS: Using probabilistic tractography, we compared the structural integrity of white matter pathways for discriminative and affective touch in young children with ASD and their typically developing (TD) peers...
2017: Molecular Autism
https://www.readbyqxmd.com/read/28626440/executive-function-in-adolescence-associations-with-child-and-family-risk-factors-and-self-regulation-in-early-childhood
#8
Donna Berthelsen, Nicole Hayes, Sonia L J White, Kate E Williams
Executive functions are important higher-order cognitive skills for goal-directed thought and action. These capacities contribute to successful school achievement and lifelong wellbeing. The importance of executive functions to children's education begins in early childhood and continues throughout development. This study explores contributions of child and family factors in early childhood to the development of executive function in adolescence. Analyses draw on data from the nationally representative study, Growing up in Australia: The Longitudinal Study of Australian Children...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28624755/stereo-vision-based-tracking-of-soft-tissue-motion-with-application-to-online-ablation-control-in-laser-microsurgery
#9
Andreas Schoob, Dennis Kundrat, Lüder A Kahrs, Tobias Ortmaier
Recent research has revealed that image-based methods can enhance accuracy and safety in laser microsurgery. In this study, non-rigid tracking using surgical stereo imaging and its application to laser ablation is discussed. A recently developed motion estimation framework based on piecewise affine deformation modeling is extended by a mesh refinement step and considering texture information. This compensates for tracking inaccuracies potentially caused by inconsistent feature matches or drift. To facilitate online application of the method, computational load is reduced by concurrent processing and affine-invariant fusion of tracking and refinement results...
June 8, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28620982/novice-students-navigating-the-clinical-environment-in-an-early-medical-clerkship
#10
Jenny Barrett, Steve C Trumble, Geoff McColl
CONTEXT: The black box that is student learning in clinical environments is an ongoing research project. Our previous research showed that despite the time that students are given to learn with, about and from patients, some lack confidence for those encounters and see few patients. The study reported here investigated individual and environmental factors affecting medical students' self-directed learning time in hospital. METHODS: We studied second year students in the four-year postgraduate Melbourne Medical School programme as they undertook the first of their four 9-week hospital placements in medical wards...
June 16, 2017: Medical Education
https://www.readbyqxmd.com/read/28620608/a-path-to-implement-precision-child-health-cardiovascular-medicine
#11
REVIEW
Marlin Touma, Brian Reemtsen, Nancy Halnon, Juan Alejos, J Paul Finn, Stanley F Nelson, Yibin Wang
Congenital heart defects (CHDs) affect approximately 1% of live births and are a major source of childhood morbidity and mortality even in countries with advanced healthcare systems. Along with phenotypic heterogeneity, the underlying etiology of CHDs is multifactorial, involving genetic, epigenetic, and/or environmental contributors. Clear dissection of the underlying mechanism is a powerful step to establish individualized therapies. However, the majority of CHDs are yet to be clearly diagnosed for the underlying genetic and environmental factors, and even less with effective therapies...
2017: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28619065/open-issues-in-mucopolysaccharidosis-type-i-hurler
#12
REVIEW
Rossella Parini, Federica Deodato, Maja Di Rocco, Edoardo Lanino, Franco Locatelli, Chiara Messina, Attilio Rovelli, Maurizio Scarpa
Mucopolysaccharidosis I-Hurler (MPS I-H) is the most severe form of a metabolic genetic disease caused by mutations of IDUA gene encoding the lysosomal α-L-iduronidase enzyme. MPS I-H is a rare, life-threatening disease, evolving in multisystem morbidity including progressive neurological disease, upper airway obstruction, skeletal deformity and cardiomyopathy. Allogeneic hematopoietic stem cell transplantation (HSCT) is currently the gold standard for the treatment of MPS I-H in patients diagnosed and treated before 2-2...
June 15, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/28618577/double-diffusivity-model-under-stochastic-forcing
#13
Amit K Chattopadhyay, Elias C Aifantis
The "double diffusivity" model was proposed in the late 1970s, and reworked in the early 1980s, as a continuum counterpart to existing discrete models of diffusion corresponding to high diffusivity paths, such as grain boundaries and dislocation lines. It was later rejuvenated in the 1990s to interpret experimental results on diffusion in polycrystalline and nanocrystalline specimens where grain boundaries and triple grain boundary junctions act as high diffusivity paths. Technically, the model pans out as a system of coupled Fick-type diffusion equations to represent "regular" and "high" diffusivity paths with "source terms" accounting for the mass exchange between the two paths...
May 2017: Physical Review. E
https://www.readbyqxmd.com/read/28618521/local-time-of-l%C3%A3-vy-random-walks-a-path-integral-approach
#14
Václav Zatloukal
The local time of a stochastic process quantifies the amount of time that sample trajectories x(τ) spend in the vicinity of an arbitrary point x. For a generic Hamiltonian, we employ the phase-space path-integral representation of random walk transition probabilities in order to quantify the properties of the local time. For time-independent systems, the resolvent of the Hamiltonian operator proves to be a central tool for this purpose. In particular, we focus on the local times of Lévy random walks (Lévy flights), which correspond to fractional diffusion equations...
May 2017: Physical Review. E
https://www.readbyqxmd.com/read/28613909/engineering-the-size-distributions-of-ordered-gaas-nanowires-on-silicon
#15
Jelena Vukajlovic-Plestina, Wonjong Kim, Vladimir G Dubrovskii, Gözde Tütüncüoglu, Maxime Lagier, Heidi Potts, Martin Friedl, Anna Fontcuberta I Morral
Reproducible integration of III-V semiconductors on silicon can open new path toward CMOS compatible optoelectronics and novel design schemes in next generation solar cells. Ordered arrays of nanowires could accomplish this task, provided they are obtained in high yield and uniformity. In this work, we provide understanding on the physical factors affecting size uniformity in ordered GaAs arrays grown on silicon. We show that the length and diameter distributions in the initial stage of growth are not much influenced by the Poissonian fluctuation-induced broadening, but rather are determined by the long incubation stage...
June 14, 2017: Nano Letters
https://www.readbyqxmd.com/read/28613255/instrumented-compliant-wrist-with-proximity-and-contact-sensing-for-close-robot-interaction-control
#16
Pascal Laferrière, Pierre Payeur
Compliance has been exploited in various forms in robotic systems to allow rigid mechanisms to come into contact with fragile objects, or with complex shapes that cannot be accurately modeled. Force feedback control has been the classical approach for providing compliance in robotic systems. However, by integrating other forms of instrumentation with compliance into a single device, it is possible to extend close monitoring of nearby objects before and after contact occurs. As a result, safer and smoother robot control can be achieved both while approaching and while touching surfaces...
June 14, 2017: Sensors
https://www.readbyqxmd.com/read/28605032/contribution-of-the-tricellular-tight-junction-to-paracellular-permeability-in-leaky-and-tight-epithelia
#17
Susanne M Krug
The tricellular tight junction (tTJ) is a potential weak point of the paracellular barrier. For solving the proportional contribution of the tTJ, ion conductances and macromolecule permeabilities were analyzed in cell lines of different leakiness. MDCK II, Caco-2, and HT-29/B6 cells were subjected to two-path impedance spectroscopy and morphological analyses in order to calculate the contribution of the tTJ to paracellular and total ion conductivity. The contribution to macromolecule permeability was evaluated by tricellulin overexpression or knockdown...
June 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28604295/medical-experts-and-agnotology-in-the-fumes-controversy-of-the-huelva-copper-mines-1888-1890
#18
Ximo Guillem-Llobat
Huelva's copper mines (Spain) have been active for centuries but in the second half of the nineteenth century extractive activities in Riotinto, Tharsis, and other mines in the region were intensified in order to reach world leadership. The method used in these mines for copper extraction from low grade ores generated continuous emissions of fumes that were extremely controversial. The inhabitants had complained about the fumes for decades but as activity intensified so did complaints. The killing of anti-fumes demonstrators in 1888 led to the passing of a Royal Decree banning the open-air roasting of ore and to the drafting of numerous reports on the hazards of the fumes...
July 2017: Medical History
https://www.readbyqxmd.com/read/28601436/evaluating-trace-element-bioavailability-and-potential-transfer-into-marine-food-chains-using-immobilised-diatom-model-species-phaeodactylum-tricornutum-on-king-george-island-antarctica
#19
Maria Teresa Cabrita, Ana Padeiro, Eduardo Amaro, Margarida Correia Dos Santos, Marcelo Leppe, Sergey Verkulich, Kevin A Hughes, Hans-Ulrich Peter, João Canário
In order to evaluate trace element bioavailability and potential transfer into marine food chains in human impacted areas of the Fildes Peninsula (King George Island, South Shetland Islands Archipelago), element levels (Cr, Ni, Cu, Zn, Cd, and Pb) were determined in water, sediments, phytoplankton, and in diatom Phaeodactylum tricornutum Bohlin (Bacillariophyceae) cells immobilised in alginate and exposed to water and sediments, from the Bellingshausen Dome (reference site) and Ardley Cove (human impacted area), during January 2014...
June 7, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28597884/a-neural-network-potential-energy-surface-for-the-nah2-system-and-dynamics-studies-on-the-h-2-s-nah-x-1-%C3%AE-%C3%A2-na-2-s-h2-x-1-%C3%AE-g-reaction
#20
Shufen Wang, Jiuchuang Yuan, Huixing Li, Maodu Chen
In order to study the dynamics of the reaction H((2)S) + NaH(X(1)Σ(+)) → Na((2)S) + H2(X(1)Σg(+)), a new potential energy surface (PES) for the ground state of the NaH2 system is constructed based on 35 730 ab initio energy points. Using basis sets of quadruple zeta quality, multireference configuration interaction calculations with Davidson correction were carried out to obtain the ab initio energy points. The neural network method is used to fit the PES, and the root mean square error is very small (0...
June 9, 2017: Physical Chemistry Chemical Physics: PCCP
keyword
keyword
112646
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"