keyword
MENU ▼
Read by QxMD icon Read
search

Layout

keyword
https://www.readbyqxmd.com/read/28092800/effect-of-venepuncture-process-design-on-efficiency-and-failure-rates-a-simulation-model-study-for-secondary-care
#1
Sean Reed, Rasa Remenyte-Prescott, Ben Rees
BACKGROUND: Healthcare aims to deliver good patient outcomes. For many clinical procedures there are multiple alternative task sequences that can be performed. These deviations can influence procedure reliability, efficiency of usage of hospital resources and risk to staff and patient safety. Venepuncture is one of the most common invasive procedures in healthcare. Literature of clinical practice shows evidence of wide variability in the procedure order and the duration of each step, which can depend on attributes, such as patient health, sampling method and staff skills...
December 29, 2016: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/28092506/wideband-2-d-array-design-optimization-with-fabrication-constraints-for-3-d-us-imaging
#2
Emmanuel Roux, Alessandro Ramalli, Herve Liebgott, Christian Cachard, Marc C Robini, Piero Tortoli
Ultrasound (US) 2-D arrays are of increasing interest due to their electronic steering capability to investigate 3-D regions without requiring any probe movement. These arrays are typically populated by thousands of elements that, ideally, should be individually driven by the companion scanner. Since this is not convenient, the so-called microbeamforming methods, yielding a prebeamforming stage performed in the probe handle by suitable custom integrated circuits, have so far been implemented in a few commercial high-end scanners...
January 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28088347/disparity-configuration-influences-depth-discrimination-in-na%C3%A3-ve-adults-but-not-in-children
#3
Laurie M Wilcox, Brittney Hartle, Aliya Solski, Kevin J Mackenzie, Deborah Giaschi
We report a series of experiments in which we assess depth discrimination performance in adults and children using a disparity-balanced target configuration to avoid the effects of anticipatory vergence eye movements. In our first study we found that children outperformed adults by a substantial margin, and the adults were consistently near chance. This was surprising given that we initially tested naïve adults to provide a benchmark for the children's data, and all observers met the criterion for stereoacuity...
January 11, 2017: Vision Research
https://www.readbyqxmd.com/read/28087996/grating-lobes-suppression-by-adding-virtual-receiving-subaperture-in-synthetic-aperture-imaging
#4
Janusz Wojcik, Marcin Lewandowski, Norbert Żołek
A method of suppression of grating lobes is presented, analyzed, and verified. The method is based on creating a Virtual Receiving Subaperture (VRS) by adding virtual transducer elements not existing in the physical layout of the receiver. The VRS channels are filled with data based on signals from real channels. The analytical model of the synthetic aperture imaging system's impulse response is presented to describe the properties of the VRS. The model shows a reduction of the receiving grating lobes' amplitude (with a comparison to the main lobe's amplitude) by a magnitude equal to the number of receiving transducer elements...
December 21, 2016: Ultrasonics
https://www.readbyqxmd.com/read/28081075/dual-focus-coherent-anti-stokes-raman-scattering-microscopy-using-a-compact-two-beam-fiber-laser-source
#5
Fisseha Bekele Legesse, Tobias Meyer, Sandro Heuke, Thomas Gottschall, Torbjörn Pascher, Jens Limpert, Andreas Tünnermann, Michael Schmitt, Jürgen Popp
We have developed a dual-focus coherent anti-Stokes Raman scattering (CARS) microscope based on a dual output, compact fiber laser source. The underlying concepts of time-multiplexed, two-beam scanning and demultiplexed detection that we already employed for second-harmonic generation are here naturally extended for CARS microscopy. The layout of a robust, all-fiber laser source was reconfigured to provide two outputs, each containing the two colors necessary for the CARS process. The utilization of the design for simultaneously imaging two laterally or axially separated fields of view and, thus, inherently speeding up the image acquisition process, is demonstrated on human artery tissue samples...
January 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28080025/enabling-energy-efficiency-and-polarity-control-in-germanium-nanowire-transistors-by-individually-gated-nano-junctions
#6
Jens Trommer, André Heinzig, Uwe Mühle, Markus Löffler, Annett Winzer, Paul Matthias Jordan, Jürgen Beister, Tim Baldauf, Marion Geidel, Barbara Adolphi, Ehrenfried Zschech, Thomas Mikolajick, Walter M Weber
Germanium is a promising material for future very large scale integration transistors, due to its superior hole mobility. However, germanium-based devices typically suffer from high reverse junction leakage due to the low bandgap energy of 0.66 eV and therefore are characterized by high static power dissipation. In this paper, we experimentally demonstrate a solution to suppress the off-state leakage in germanium nanowire Schottky barrier transistors. Thereto, a device layout with multiple independent gates is used to induce an additional energy barrier to the channel which blocks the undesired carrier type...
January 12, 2017: ACS Nano
https://www.readbyqxmd.com/read/28079584/the-development-and-implementation-of-cognitive-aids-for-critical-events-in-pediatric-anesthesia-the-society-for-pediatric-anesthesia-critical-events-checklists
#7
Anna Clebone, Barbara K Burian, Scott C Watkins, Jorge A Gálvez, Justin L Lockman, Eugenie S Heitmiller
Cognitive aids such as checklists are commonly used in modern operating rooms for routine processes, and the use of such aids may be even more important during critical events. The Quality and Safety Committee of the Society for Pediatric Anesthesia (SPA) has developed a set of critical-event checklists and cognitive aids designed for 3 purposes: (1) as a repository of the latest evidence-based and expert opinion-based information to guide response and management of critical events, (2) as a source of just-in-time information during critical events, and (3) as a method to facilitate a shared understanding of required actions among team members during a critical event...
January 10, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28077912/emptyheaded-a-relational-engine-for-graph-processing
#8
Christopher R Aberger, Susan Tu, Kunle Olukotun, Christopher Ré
There are two types of high-performance graph processing engines: low- and high-level engines. Low-level engines (Galois, PowerGraph, Snap) provide optimized data structures and computation models but require users to write low-level imperative code, hence ensuring that efficiency is the burden of the user. In high-level engines, users write in query languages like datalog (SociaLite) or SQL (Grail). High-level engines are easier to use but are orders of magnitude slower than the low-level graph engines. We present EmptyHeaded, a high-level engine that supports a rich datalog-like query language and achieves performance comparable to that of low-level engines...
June 2016: Proceedings
https://www.readbyqxmd.com/read/28074626/radio-cephalic-fistula-recovered-with-drainage-to-forearm-basilic-vein
#9
António Norton de Matos, Clemente Neves Sousa, Paulo Almeida, Paulo Teles, Luís Loureiro, Gabriela Teixeira, Duarte Rego, Sérgio Teixeira
Dysfunction problems with vascular access are a concern to patients and dialysis units. The vascular surgeon should analyse such dysfunction and perform a careful assessment of the vascular network in order to find new fistula layouts. We introduce and discuss the case of creation of a radio-cephalic fistula with outflow into the forearm basilic vein through rotation of the forearm basilic vein toward the cephalic vein in the forearm of an 88-year-old hemodialysis male patient. This technique enables extending fistula patency and improves cost efficiency...
January 10, 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28074466/anatomical-organization-of-the-brain-of-a-diurnal-and-a-nocturnal-dung-beetle
#10
Esa-Ville Immonen, Marie Dacke, Stanley Heinze, Basil El Jundi
To avoid the fierce competition for food, South African ball-rolling dung beetles carve a piece of dung off a dung-pile, shape it into a ball and roll it away along a straight line path. For this unidirectional exit from the busy dung pile, at night and day, the beetles use a wide repertoire of celestial compass cues. This robust and relatively easily measurable orientation behavior has made ball-rolling dung beetles an attractive model organism for the study of the neuroethology behind insect orientation and sensory ecology...
January 11, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28065926/image-based-3d-canopy-reconstruction-to-determine-potential-productivity-in-complex-multi-species-crop-systems
#11
Alexandra J Burgess, Renata Retkute, Michael P Pound, Sean Mayes, Erik H Murchie
BACKGROUND AND AIMS: Intercropping systems contain two or more species simultaneously in close proximity. Due to contrasting features of the component crops, quantification of the light environment and photosynthetic productivity is extremely difficult. However it is an essential component of productivity. Here, a low-tech but high-resolution method is presented that can be applied to single- and multi-species cropping systems to facilitate characterization of the light environment. Different row layouts of an intercrop consisting of Bambara groundnut (Vigna subterranea) and proso millet (Panicum miliaceum) have been used as an example and the new opportunities presented by this approach have been analysed...
January 8, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28054067/elastic-instabilities-during-the-flow-of-hydrolyzed-polyacrylamide-solution-in-porous-media-effect-of-pore-shape-and-salt
#12
Durgesh Kawale, Esteban Marques, Pacelli L J Zitha, Michiel T Kreutzer, William R Rossen, Pouyan E Boukany
We experimentally investigate the flow of hydrolyzed polyacrylamide (HPAM) solution with and without salt in model porous media at high Weissenberg numbers (Wi > 1.0). The effect of pore shapes on the flow pattern and pressure drop is explored by using periodic arrays of circular and square pillars in aligned and staggered layouts. In the apparent shear-thinning regime, we observe stationary dead zones upstream of the pillars. In addition, we confirm that the size of stationary dead zones correlates with the level of shear-thinning, by varying the amount of salt in HPAM solution...
January 5, 2017: Soft Matter
https://www.readbyqxmd.com/read/28053107/domain-organization-and-evolution-of-the-highly-divergent-5-coding-region-of-genomes-of-arteriviruses-including-the-novel-possum-nidovirus
#13
Anastasia Gulyaeva, Magdalena Dunowska, Erik Hoogendoorn, Julia Giles, Dmitry Samborskiy, Alexander E Gorbalenya
: In five experimentally characterized arterivirus species, the 5' -end genome coding region comprises most divergent nonstructural proteins (nsp) 1 and 2 that include papain-like proteases (PLPs) and other poorly characterized domains. They are involved in regulation of transcription, polyprotein processing, and virus-host interaction. Here, we present results of bioinformatics analysis of this region of 14 arterivirus species, including that of the most distantly related wobbly possum disease virus (WPDV), determined by a modified 5' RACE protocol...
January 4, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28047931/su-f-t-249-application-of-human-factors-methods-usability-testing-in-the-radiation-oncology-environment
#14
H Warkentin, K Bubric, H Giovannetti, G Graham, C Clay
PURPOSE: As a quality improvement measure, we undertook this work to incorporate usability testing into the implementation procedures for new electronic documents and forms used by four affiliated radiation therapy centers. METHODS: A human factors specialist provided training in usability testing for a team of medical physicists, radiation therapists, and radiation oncologists from four radiotherapy centers. A usability testing plan was then developed that included controlled scenarios and standardized forms for qualitative and quantitative feedback from participants, including patients...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046581/su-f-t-183-design-of-a-beam-shaping-assembly-of-a-compact-dd-based-boron-neutron-capture-therapy-system
#15
M Hsieh, Y Liu, L Nie
PURPOSE: To design a beam shaping assembly (BSA) to shape the 2.45-MeV neutrons produced by a deuterium-deuterium (DD) neutron generator and to optimize the beam output for boron neutron capture therapy of brain tumors METHODS: MCNP is used for this simulation study. The simulation model consists of a neutron surface source that resembles an actual DD source and is surrounded by a BSA. The neutron source emits 2.45-MeV neutrons isotropically. The BSA is composed of a moderator, reflector, collimator and filter...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046252/su-g-jep1-13-innovative-tracking-detector-for-dose-monitoring-in-hadron-therapy-realization-and-monte-carlo-simulations
#16
A Rucinski, G Battistoni, F Collamati, F Collini, E De Lucia, R Faccini, P Frallicciardi, C Mancini-Terracciano, M Marafini, S Muraro, R Paramatti, V Patera, L Piersanti, D Pinci, A Russomando, A Sarti, A Sciubba, E Solfaroli Camillocci, M Toppi, G Traini, C Voena, A Rucinski
PURPOSE: Development of strategies to monitor range uncertainties is necessary to improve treatment planning in Charged Particle Therapy (CPT) and fully exploit the advantages of ion beams. Our group developed (within the framework of the INSIDE project funded by the Italian research ministry) and is currently building a compact detector Dose Profiler (DP) able to backtrack charged secondary particles produced in the patient during the irradiation. Furthermore we are studying monitoring strategy exploiting charged secondary emission profiles to control the range of the ion beam...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28044013/contributions-of-low-and-high-level-properties-to-neural-processing-of-visual-scenes-in-the-human-brain
#17
REVIEW
Iris I A Groen, Edward H Silson, Chris I Baker
Visual scene analysis in humans has been characterized by the presence of regions in extrastriate cortex that are selectively responsive to scenes compared with objects or faces. While these regions have often been interpreted as representing high-level properties of scenes (e.g. category), they also exhibit substantial sensitivity to low-level (e.g. spatial frequency) and mid-level (e.g. spatial layout) properties, and it is unclear how these disparate findings can be united in a single framework. In this opinion piece, we suggest that this problem can be resolved by questioning the utility of the classical low- to high-level framework of visual perception for scene processing, and discuss why low- and mid-level properties may be particularly diagnostic for the behavioural goals specific to scene perception as compared to object recognition...
February 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28040936/a-spectral-pyrometer-to-spatially-resolve-the-blackbody-temperature-of-a-warm-dense-plasma
#18
J E Coleman
A pyrometer has been developed to spatially resolve the blackbody temperature of a radiatively cooling warm dense plasma. The pyrometer is composed of a lens coupled fiber array, Czerny-Turner visible spectrometer, and an intensified gated CCD for the detector. The radiatively cooling warm dense plasma is generated by a ∼100-ns-long intense relativistic electron bunch with an energy of 19.1 MeV and a current of 0.2 kA interacting with 100-μm-thick low-Z foils. The continuum spectrum is measured over 250 nm with a low groove density grating...
December 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28035492/factors-influencing-the-use-of-a-mobile-app-for-reporting-adverse-drug-reactions-and-receiving-safety-information-a-qualitative-study
#19
Sieta T de Vries, Lisa Wong, Alastair Sutcliffe, François Houÿez, Carmen Lasheras Ruiz, Peter G M Mol
INTRODUCTION: A mobile app may increase the reporting of adverse drug reactions (ADRs) and improve the communication of new drug safety information. Factors that influence the use of an app for such two-way risk communication need to be considered at the development stage. OBJECTIVE: Our aim was to reveal the factors that may influence healthcare professionals (HCPs) and patients to use an app for two-way risk communication. METHODS: Focus group discussions and face-to-face interviews were conducted in the Netherlands, Spain and the UK...
December 29, 2016: Drug Safety: An International Journal of Medical Toxicology and Drug Experience
https://www.readbyqxmd.com/read/28029622/towards-zero-waste-furniture-design
#20
Bongjin Koo, Jean Hergel, Sylvain Lefebvre, Niloy Mitra
In traditional design, shapes are first conceived, and then fabricated. While this decoupling simplifies the design process, it can result in unwanted material wastage, especially where off-cut pieces are hard to reuse. In absence of explicit feedback on material usage, the designer remains helpless to effectively adapt the design - even when design variabilities exist.We investigate waste minimizing furniture design wherein based on the current design, the user is presented with design variations that result in less wastage of materials...
December 1, 2016: IEEE Transactions on Visualization and Computer Graphics
keyword
keyword
66687
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"