keyword
MENU ▼
Read by QxMD icon Read
search

Track and field

keyword
https://www.readbyqxmd.com/read/28821875/convenient-and-effective-icgylation-of-magnetic-nanoparticles-for-biomedical-applications
#1
Hye Sun Park, Jongwoo Kim, Mi Young Cho, Hyunseung Lee, Sang Hwan Nam, Yung Doug Suh, Kwan Soo Hong
Nanoprobes used for biomedical applications usually require surface modifications with amphiphilic surfactants or inorganic coating materials to enhance their biocompatibility. We proposed a facile synthetic approach for the phase transfer of hydrophobic magnetic nanoparticles by the direct adherence of fluorescent probes, without any chemical modifications, for use as a magnetic resonance (MR)/near-infrared (NIR) fluorescence bimodal imaging contrast agent. Indocyanine green (ICG) was used not only as an optical component for NIR imaging, but also as a surfactant for phase transfer with no superfluous moiety: we therefore called the process "ICGylation"...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818819/quantifying-human-movement-using-the-movn-smartphone-app-validation-and-field-study
#2
Ralph Maddison, Luke Gemming, Javier Monedero, Linda Bolger, Sarahjane Belton, Johann Issartel, Samantha Marsh, Artur Direito, Madeleine Solenhill, Jinfeng Zhao, Daniel John Exeter, Harshvardhan Vathsangam, Jonathan Charles Rawstorn
BACKGROUND: The use of embedded smartphone sensors offers opportunities to measure physical activity (PA) and human movement. Big data-which includes billions of digital traces-offers scientists a new lens to examine PA in fine-grained detail and allows us to track people's geocoded movement patterns to determine their interaction with the environment. OBJECTIVE: The objective of this study was to examine the validity of the Movn smartphone app (Moving Analytics) for collecting PA and human movement data...
August 17, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28817244/key-developments-that-impacted-the-field-of-mechanobiology-and-mechanotransduction
#3
Michelle Wall, David Butler, Alicia El Haj, Josephine C Bodle, Elizabeth G Loboa, Albert J Banes
Advances in mechanobiology have evolved through insights from multiple disciplines including structural engineering, biomechanics, vascular biology, and orthopaedics. In this paper, we reviewed the impact of key reports related to the study of applied loads on tissues and cells and the resulting signal transduction pathways. We addressed how technology has helped advance the burgeoning field of mechanobiology (over 33,600 publications from 1970-2016). We analyzed the impact of critical ideas and then determined how these concepts influenced the mechanobiology field by looking at the citation frequency of these reports as well as tracking how the overall number of citations within the field changed over time...
August 17, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28816656/tracking-by-detection-of-3d-human-shapes-from-surfaces-to-volumes
#4
Chun-Hao Huang, Benjamin Allain, Edmond Boyer, Jean-Sebastien Franco, Federico Tombari, Nassir Navab, Slobodan Ilic
3D Human shape tracking consists in fitting a template model to temporal sequences of visual observations. It usually comprises an association step, that finds correspondences between the model and the input data, and a deformation step, that fits the model to the observations given correspondences. Most current approaches follow the Iterative-Closest-Point (ICP) paradigm, where the association step is carried out by searching for the nearest neighbors. It fails when large deformations occur and errors in the association tend to propagate over time...
August 15, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://www.readbyqxmd.com/read/28816148/prompt-gamma-imaging-for-in%C3%A2-vivo-range-verification-of-pencil-beam-scanning-proton-therapy
#5
Yunhe Xie, El Hassane Bentefour, Guillaume Janssens, Julien Smeets, François Vander Stappen, Lucian Hotoiu, Lingshu Yin, Derek Dolney, Stephen Avery, Fionnbarr O'Grady, Damien Prieels, James McDonough, Timothy D Solberg, Robert A Lustig, Alexander Lin, Boon-Keng K Teo
PURPOSE: To report the first clinical results and value assessment of prompt gamma imaging for in vivo proton range verification in pencil beam scanning mode. METHODS AND MATERIALS: A stand-alone, trolley-mounted, prototype prompt gamma camera utilizing a knife-edge slit collimator design was used to record the prompt gamma signal emitted along the proton tracks during delivery of proton therapy for a brain cancer patient. The recorded prompt gamma depth detection profiles of individual pencil beam spots were compared with the expected profiles simulated from the treatment plan...
September 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28815151/eye-tracking-for-clinical-decision-support-a-method-to-capture-automatically-what-physicians-are-viewing-in-the-emr
#6
Andrew J King, Harry Hochheiser, Shyam Visweswaran, Gilles Clermont, Gregory F Cooper
Eye-tracking is a valuable research tool that is used in laboratory and limited field environments. We take steps toward developing methods that enable widespread adoption of eye-tracking and its real-time application in clinical decision support. Eye-tracking will enhance awareness and enable intelligent views, more precise alerts, and other forms of decision support in the Electronic Medical Record (EMR). We evaluated a low-cost eye-tracking device and found the device's accuracy to be non-inferior to a more expensive device...
2017: AMIA Summits on Translational Science Proceedings
https://www.readbyqxmd.com/read/28813907/position-and-stiffness-modulation-of-a-wrist-haptic-device-using-myoelectric-interface
#7
Chris Wilson Antuvan, Lorenzo Masia
Modulation of stiffness provides a great deal of advantage in the way humans interact with the environment, and is very important in successfully performing activities of daily living. In the context of human-machine interactions, stiffness control could provide a safer interaction, especially when dealing with unpredictable environment. In this paper we propose a user-modulated stiffness and position control for the wrist flexion/extension degree of freedom while physically coupled to a haptic device. A virtual position tracking experiment in a varying external force field is designed in order to test the performance of the control strategy with and without co-contraction techniques...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813895/customized-therapy-using-distributions-of-reaching-errors
#8
Moria F Bittmann, James L Patton, Felix C Huang
While there has been recent success with robotic therapy approaches, individual differences in motor impairments motivate the need for customized therapy. Our latest work with healthy participants considered the likelihood of one's error to construct a customized force field training environment, which we termed an error field. We believe error statistics could characterize individual motor impairments for stroke survivors. Here we present preliminary results from a pilot study testing this therapy technique on individuals following stroke...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813798/a-novel-method-for-muscle-fatigue-assessment-during-robot-based-tracking-tasks
#9
Maddalena Mugnosso, Francesca Marini, Matteo Gillardo, Pietro Morasso, Jacopo Zenzeri
In this work we propose a novel method based on sEMG signals, easy and fast to perform, administered with a robotic device to maximize repeatability and objectivity. Muscle fatigue, which is frequently experienced by healthy subjects, can be a highly debilitating symptom in case of neuromuscular disorders. Its assessment provides crucial information on the progression of the disability itself, on patient's muscular function and on the efficacy of the eventual clinical intervention. Hence, a robust and objective protocol for fatigue assessment is fundamental in rehabilitation practice...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28812374/an-evaluation-scheme-for-assessing-the-effectiveness-of-intersection-movement-assist-ima-on-improving-traffic-safety
#10
Kun-Feng Wu, Nashir Ardiansyah, Wei-Jyun Ye
OBJECTIVE: Intersection Movement Assist (IMA) has been recognized as one of the prominent countermeasures to reduce angle crashes at intersections, which constitute 22 percent of total crashes in the US. Utilizing vehicle-based sensors, vehicle-to-vehicle (V2░V), and vehicle-to-infrastructure (V2I) communications, IMA offers extended vision to provide early warning for an imminent crash. However, most of IMA related research implements their methods and strategies only in simulations, test tracks, or driving simulator studies that have quite a few assumptions and limitations, and hence the effectiveness evaluations reported may not be transferable or comparable...
August 16, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28812061/behavioral-comorbidities-and-drug-treatments-in-a-zebrafish-scn1lab-model-of-dravet-syndrome
#11
Brian P Grone, Tiange Qu, Scott C Baraban
Loss-of-function mutations in SCN1A cause Dravet syndrome (DS), a catastrophic childhood epilepsy in which patients experience comorbid behavioral conditions, including movement disorders, sleep abnormalities, anxiety, and intellectual disability. To study the functional consequences of voltage-gated sodium channel mutations, we use zebrafish with a loss-of-function mutation in scn1lab, a zebrafish homolog of human SCN1A. Homozygous scn1lab(s552/s552) mutants exhibit early-life seizures, metabolic deficits, and early death...
July 2017: ENeuro
https://www.readbyqxmd.com/read/28811461/sparse-orthogonal-population-representation-of-spatial-context-in-the-retrosplenial-cortex
#12
Dun Mao, Steffen Kandler, Bruce L McNaughton, Vincent Bonin
Sparse orthogonal coding is a key feature of hippocampal neural activity, which is believed to increase episodic memory capacity and to assist in navigation. Some retrosplenial cortex (RSC) neurons convey distributed spatial and navigational signals, but place-field representations such as observed in the hippocampus have not been reported. Combining cellular Ca(2+) imaging in RSC of mice with a head-fixed locomotion assay, we identified a population of RSC neurons, located predominantly in superficial layers, whose ensemble activity closely resembles that of hippocampal CA1 place cells during the same task...
August 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28809398/precision-medicine-for-suicidality-from-universality-to-subtypes-and-personalization
#13
A B Niculescu, H Le-Niculescu, D F Levey, P L Phalen, H L Dainton, K Roseberry, E M Niculescu, J O Niezer, A Williams, D L Graham, T J Jones, V Venugopal, A Ballew, M Yard, T Gelbart, S M Kurian, A Shekhar, N J Schork, G E Sandusky, D R Salomon
Suicide remains a clear, present and increasing public health problem, despite being a potentially preventable tragedy. Its incidence is particularly high in people with overt or un(der)diagnosed psychiatric disorders. Objective and precise identification of individuals at risk, ways of monitoring response to treatments and novel preventive therapeutics need to be discovered, employed and widely deployed. We sought to investigate whether blood gene expression biomarkers for suicide (that is, a 'liquid biopsy' approach) can be identified that are more universal in nature, working across psychiatric diagnoses and genders, using larger cohorts than in previous studies...
August 15, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28808942/primary-care-providers-opening-of-time-sensitive-alerts-sent-to-commercial-electronic-health-record-inbaskets
#14
Sarah L Cutrona, Hassan Fouayzi, Laura Burns, Rajani S Sadasivam, Kathleen M Mazor, Jerry H Gurwitz, Lawrence Garber, Devi Sundaresan, Thomas K Houston, Terry S Field
BACKGROUND: Time-sensitive alerts are among the many types of clinical notifications delivered to physicians' secure InBaskets within commercial electronic health records (EHRs). A delayed alert review can impact patient safety and compromise care. OBJECTIVE: To characterize factors associated with opening of non-interruptive time-sensitive alerts delivered into primary care provider (PCP) InBaskets. DESIGN AND PARTICIPANTS: We analyzed data for 799 automated alerts...
August 14, 2017: Journal of General Internal Medicine
https://www.readbyqxmd.com/read/28808625/epidemiology-of-open-fractures-in-sport-one-centre-s-15-year-retrospective-study
#15
Alexander M Wood, Greg A J Robertson, Kirsty MacLeod, Anna Porter, Charles M Court-Brown
AIM: To describe the epidemiology of sport-related open fractures from one centre's adult patient population over a 15-year period. METHODS: A retrospective review of a prospectively-collected database was performed: The database contained information all sport-related open fractures, sustained from 1995 to 2009 in the Edinburgh, Mid and East Lothian Populations. RESULTS: Over the 15-year period, there were 85 fractures recorded in 84 patients...
July 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28805692/real-time-rain-rate-evaluation-via-satellite-downlink-signal-attenuation-measurement
#16
Filippo Giannetti, Ruggero Reggiannini, Marco Moretti, Elisa Adirosi, Luca Baldini, Luca Facheris, Andrea Antonini, Samantha Melani, Giacomo Bacci, Antonio Petrolino, Attilio Vaccaro
We present the NEFOCAST project (named by the contraction of "Nefele", which is the Italian spelling for the mythological cloud nymph Nephele, and "forecast"), funded by the Tuscany Region, about the feasibility of a system for the detection and monitoring of precipitation fields over the regional territory based on the use of a widespread network of new-generation Eutelsat "SmartLNB" (smart low-noise block converter) domestic terminals. Though primarily intended for interactive satellite services, these devices can also be used as weather sensors, as they have the capability of measuring the rain-induced attenuation incurred by the downlink signal and relaying it on an auxiliary return channel...
August 12, 2017: Sensors
https://www.readbyqxmd.com/read/28804520/fast-simulation-of-lipid-vesicle-deformation-using-spherical-harmonic-approximation
#17
Michael Mikucki, Yongcheng Zhou
Lipid vesicles appear ubiquitously in biological systems. Understanding how the mechanical and intermolecular interactions deform vesicle membranes is a fundamental question in biophysics. In this article we develop a fast algorithm to compute the surface configurations of lipid vesicles by introducing surface harmonic functions to approximate the membrane surface. This parameterization allows an analytical computation of the membrane curvature energy and its gradient for the efficient minimization of the curvature energy using a nonlinear conjugate gradient method...
January 2017: Communications in Computational Physics
https://www.readbyqxmd.com/read/28802870/audio-visual-synchrony-and-spatial-attention-enhance-processing-of-dynamic-visual-stimulation-independently-and-in-parallel-a-frequency-tagging-study
#18
Amra Covic, Christian Keitel, Emanuele Porcu, Erich Schröger, Matthias M Müller
The neural processing of a visual stimulus can be facilitated by attending to its position or by a co-occurring auditory tone. Using frequency-tagging we investigated whether facilitation by spatial attention and audio-visual synchrony rely on similar neural processes. Participants attended to one of two flickering Gabor patches (14.17 and 17 Hz) located in opposite lower visual fields. Gabor patches further "pulsed" (i.e. showed smooth spatial frequency variations) at distinct rates (3.14 and 3.63 Hz). Frequency-modulating an auditory stimulus at the pulse-rate of one of the visual stimuli established audio-visual synchrony...
August 9, 2017: NeuroImage
https://www.readbyqxmd.com/read/28802756/feasibility-of-using-global-system-for-mobile-communication-gsm-based-tracking-for-vaccinators-to-improve-oral-poliomyelitis-vaccine-campaign-coverage-in-rural-pakistan
#19
Subhash Chandir, Vijay Kumar Dharma, Danya Arif Siddiqi, Aamir Javed Khan
Despite multiple rounds of immunization campaigns, it has not been possible to achieve optimum immunization coverage for poliovirus in Pakistan. Supplementary activities to improve coverage of immunization, such as door-to-door campaigns are constrained by several factors including inaccurate hand-drawn maps and a lack of means to objectively monitor field teams in real time, resulting in suboptimal vaccine coverage during campaigns. Global System for Mobile Communications (GSM) - based tracking of mobile subscriber identity modules (SIMs) of vaccinators provides a low-cost solution to identify missed areas and ensure effective immunization coverage...
August 9, 2017: Vaccine
https://www.readbyqxmd.com/read/28800343/microsaccade-dysfunction-and-adaptation-in-hemianopia-after-stroke
#20
Ying Gao, Bernhard A Sabel
BACKGROUND: Besides the reduction of visual field size, hemianopic patients may also experience other poorly understood symptoms such as blurred vision, diplopia, or reduced visual acuity, which may be related to microsaccade function. OBJECTIVE: To determine (i) if microsaccades are altered in hemianopia; (ii) how altered microsaccade features correlate with visual performances; and (iii) how their direction relates to visual field defect topography. METHODS: In this case-control study, microsaccades of hemianopic stroke patients (n = 14) were assessed with high-resolution eye-tracking technique, compared with those of healthy controls (n = 14), and correlated with visual performances, visual field defect parameters and lesion age...
2017: Restorative Neurology and Neuroscience
keyword
keyword
26867
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"