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https://www.readbyqxmd.com/read/28335445/deciphering-egyptian-hieroglyphs-towards-a-new-strategy-for-navigation-in-museums
#1
Jaime Duque-Domingo, Pedro Javier Herrera, Enrique Valero, Carlos Cerrada
This work presents a novel strategy to decipher fragments of Egyptian cartouches identifying the hieroglyphs of which they are composed. A cartouche is a drawing, usually inside an oval, that encloses a group of hieroglyphs representing the name of a monarch. Aiming to identify these drawings, the proposed method is based on several techniques frequently used in computer vision and consists of three main stages: first, a picture of the cartouche is taken as input and its contour is localized. In the second stage, each hieroglyph is individually extracted and identified...
March 14, 2017: Sensors
https://www.readbyqxmd.com/read/28333448/role-of-oxygen-functionalities-in-graphene-oxide-architectural-laminates-goal-sub-nanometer-spacing-and-water-transport
#2
Carlo Alberto Amadei, Andrea Montessori, Julian P Kadow, Sauro Succi, Chad David Vecitis
Active research in nanotechnology contemplates the use of nanomaterials for environmental engineering applications. However, a primary challenge is understanding the effects of nanomaterial properties on industrial device performance and translating unique nanoscale properties to the macroscale. One emerging example is graphene oxide (GO) membranes for separation processes. Thus, here we investigate how individual GO properties, in particular the GO chemistry, can impact GO membrane characteristics and water permeability...
March 23, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28323639/the-effect-of-boundary-slippage-and-nonlinear-rheological-response-on-flow-of-nanoconfined-water
#3
Amandeep Sekhon, V J Ajith, Shivprasad Vitthal Patil
The flow of water confined to nanometer-sized pores is central to a wide range of subjects from biology to nanofluidic devices. Despite its importance, a clear picture about nanoscale fluid dynamics is yet to emerge. Here we measured dissipation in less than 20 nm thick water films and it was found to decrease for both wetting and non-wetting confining surfaces. The fitting of Carreau-Yasuda model of shear thinning to our measurements implies that flow is non-Newtonian and for wetting surfaces the no-slip boundary condition is valid...
March 21, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28320688/implementation-of-a-home-monitoring-system-for-heart-failure-patients-a-feasibility-study
#4
Martin Steven Kohn, Jeffrey Haggard, Jack Kreindler, Kade Birkeland, Ilan Kedan, Raymond Zimmer, Raj Khandwalla
BACKGROUND: Improving the management of patients with complex chronic disease is a substantial undertaking with the simultaneous goals of improving patient outcomes and controlling costs. Reducing avoidable hospitalization for such patients is a step toward both objectives. Some of the deterioration experienced in chronic disease patients occurs outside the view of their clinicians, and before the patient becomes overtly symptomatic. Home monitoring has been used for more than 20 years to detect deterioration earlier so that the patients could be treated before they became ill enough to require hospitalization...
March 20, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28300955/prototype-app-for-voice-therapy-a-peer-review
#5
Paula Lavaissiéri, Paulo Eduardo Damasceno Melo
Purpose: Voice speech therapy promotes changes in patients' voice-related habits and rehabilitation. Speech-language therapists use a host of materials ranging from pictures to electronic resources and computer tools as aids in this process. Mobile technology is attractive, interactive and a nearly constant feature in the daily routine of a large part of the population and has a growing application in healthcare. To develop a prototype application for voice therapy, submit it to peer assessment, and to improve the initial prototype based on these assessments...
March 9, 2017: CoDAS
https://www.readbyqxmd.com/read/28268697/analysis-of-comfort-and-ergonomics-for-clinical-work-environments
#6
Ali Shafti, Beatriz Urbistondo Lazpita, Oussama Elhage, Helge A Wurdemann, Kaspar Althoefer
Work related musculoskeletal disorders (WMSD) are a serious risk to workers' health in any work environment, and especially in clinical work places. These disorders are typically the result of prolonged exposure to non-ergonomic postures and the resulting discomfort in the workplace. Thus a continuous assessment of comfort and ergonomics is necessary. There are different techniques available to make such assessments, such as self-reports on perceived discomfort and observational scoring models based on the posture's relevant joint angles...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226884/analysis-of-comfort-and-ergonomics-for-clinical-work-environments
#7
Ali Shafti, Beatriz Urbistondo Lazpita, Oussama Elhage, Helge A Wurdemann, Kaspar Althoefer, Ali Shafti, Beatriz Urbistondo Lazpita, Oussama Elhage, Helge A Wurdemann, Kaspar Althoefer, Helge A Wurdemann, Beatriz Urbistondo Lazpita, Kaspar Althoefer, Ali Shafti, Oussama Elhage
Work related musculoskeletal disorders (WMSD) are a serious risk to workers' health in any work environment, and especially in clinical work places. These disorders are typically the result of prolonged exposure to non-ergonomic postures and the resulting discomfort in the workplace. Thus a continuous assessment of comfort and ergonomics is necessary. There are different techniques available to make such assessments, such as self-reports on perceived discomfort and observational scoring models based on the posture's relevant joint angles...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28221755/multilevel-ultrafast-flexible-nanoscale-nonvolatile-hybrid-graphene-oxide-titanium-oxide-memories
#8
V Karthik Nagareddy, Matthew D Barnes, Federico Zipoli, Khue T Lai, Arseny M Alexeev, Monica Felicia Craciun, C David Wright
Graphene oxide (GO) resistive memories offer the promise of low-cost environmentally sustainable fabrication, high mechanical flexibility and high optical transparency, making them ideally suited to future flexible and transparent electronics applications. However, the dimensional and temporal scalability of GO memories, i.e., how small they can be made and how fast they can be switched, is an area that has received scant attention. Moreover, a plethora of GO resistive switching characteristics and mechanisms has been reported in the literature, sometimes leading to a confusing and conflicting picture...
February 27, 2017: ACS Nano
https://www.readbyqxmd.com/read/28218360/evaluating-safety-efficacy-and-cost-effectiveness-of-picc-securement-by-subcutaneously-anchored-stabilization-device
#9
Pietro Antonio Zerla, Antonio Canelli, Lidia Cerne, Giuseppe Caravella, Alessandra Gilardini, Giuseppe De Luca, Ana Maria Aricisteanu, Raffaele Venezia
PURPOSE: In recent years, a large variety of medical devices has become available. Every device must be efficient, safe and cost effective, but it is not enough to use it properly without considering the environment in which it will be employed. We applied this kind of analysis to subcutaneously anchored sutureless devices (SAS). METHODS: This is a one-center prospective observational study on safety, effectiveness and cost effectiveness of an SAS device (SecurAcath, Interrad) for securement of peripherally inserted central catheter (PICC) in 30 adult cancer patients with treatment expected to be >60 days...
February 15, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28216791/molecular-processes-leading-to-necking-in-extensional-flow-of-polymer-solutions-using-microfluidics-and-single-dna-imaging
#10
Shaurya Sachdev, Aswin Muralidharan, Pouyan E Boukany
We study the necking and pinch-off dynamics of liquid droplets that contain a semidilute polymer solution of polyacrylamide close to overlap concentration by combining microfluidics and single DNA observation. Polymeric droplets are stretched by passing them through the stagnation point of a T-shaped microfluidic junction. In contrast with the sudden breakup of Newtonian droplets, a stable neck is formed between the separating ends of the droplet which delays the breakup process. Initially, polymeric filaments experience exponential thinning by forming a stable neck with extensional flow within the filament...
December 27, 2016: Macromolecules
https://www.readbyqxmd.com/read/28216666/strong-electronic-interaction-and-multiple-quantum-hall-ferromagnetic-phases-in-trilayer-graphene
#11
Biswajit Datta, Santanu Dey, Abhisek Samanta, Hitesh Agarwal, Abhinandan Borah, Kenji Watanabe, Takashi Taniguchi, Rajdeep Sensarma, Mandar M Deshmukh
Quantum Hall effect provides a simple way to study the competition between single particle physics and electronic interaction. However, electronic interaction becomes important only in very clean graphene samples and so far the trilayer graphene experiments are understood within non-interacting electron picture. Here, we report evidence of strong electronic interactions and quantum Hall ferromagnetism seen in Bernal-stacked trilayer graphene. Due to high mobility ∼500,000 cm(2 )V(-1 )s(-1) in our device compared to previous studies, we find all symmetry broken states and that Landau-level gaps are enhanced by interactions; an aspect explained by our self-consistent Hartree-Fock calculations...
February 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/28207235/explorations-of-the-indenofluorenes-and-expanded-quinoidal-analogues
#12
Conerd K Frederickson, Bradley D Rose, Michael M Haley
Highly conjugated hydrocarbons have attracted interest for use as active materials in electronic devices such as organic field effect transistors (OFET) and organic photovoltaics (OPV). In this Account, we review our progress in synthesizing and studying a new class of small molecules for potential use as organic semiconductors. The idea originated from prior research on octadehydrodibenz[12]annulene, as the system can undergo double transannular cyclization to yield the indeno[1,2-b]fluorene skeleton. Subsequent functionalization afforded the first stable, well-characterized indeno[1,2-b]fluorene derivatives, albeit in minute quantities (tens of milligrams)...
February 16, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28192839/accuracy-of-focal-laser-treatment-based-on-external-imaging-oct-using-a-navigated-retinal-laser-system-a-case-series
#13
S Voegeli, J P Howell, P Marti, M K Schmid
Background The navigated laser photocoagulation system (NAVILAS®, OD-OS GmBH, Teltow, Germany) is a laser treatment device that provides navigated laser treatment of the retina based on a fundus image. The purpose of this study was to investigate the accuracy of laser treatment based on external optical coherence tomography (OCT) images - a new application of the device. Patients and Methods This retrospective case series evaluated the accuracy of laser spot placement in 7 eyes after using overlaid external OCT images for planning NAVILAS laser treatment...
February 13, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28182288/the-place-of-crowdfunding-in-the-discovery-of-scientific-and-social-value-of-medical-research
#14
Lorenzo Del Savio
Crowdfunding is increasingly common in medical research. Some critics are concerned that by adopting crowdfunding, some researchers may sidestep the established systems of review of the social and scientific value of studies (e.g. impact on disease burden, issues of justice), especially mechanisms of expert-based review. I argue firstly that such concerns are based on a misleading picture of how research value is assessed and secondly that crowdfunding may turn out to be an useful complement of extant funding systems...
February 9, 2017: Bioethics
https://www.readbyqxmd.com/read/28168140/self-supported-polypyrrole-polyvinylsulfate-films-electrochemical-synthesis-characterization-and-sensing-properties-of-their-redox-reactions
#15
Toribio F Otero, Lluis X Martinez-Soria, Johanna Schumacher, Laura Valero, Victor H Pascual
Invited for this month's cover picture is the group of Professor Toribio F. Otero at the Centre for Electrochemistry, Intelligent Materials and Devices at the Polytechnic University of Cartagena (Spain). The cover picture shows an electrochemical cell as well as three representative cyclic voltammetric responses, displaying the electrolyte potential window, the monomer oxidation-polymerization potential range, and the polymer oxidation-reduction potential window. For more details, read the full text of the Full Paper at 10...
February 2017: ChemistryOpen
https://www.readbyqxmd.com/read/28150738/thermal-conductance-of-teflon-and-polyethylene-insight-from-an-atomistic-single-molecule-level
#16
Marius Buerkle, Yoshihiro Asai
The thermal transport properties of teflon (polytetrafluoroethylene) and its polyethylene counterparts are, while highly desirable and widely used, only superficially understood. Here, we aim therefore to provide rigorous insight from an atomistic point of view in context of single-molecule devices. We show that for vinyl polymers adsorbed on metal-surfaces the thermal transport strongly depends on the properties of the metal-molecule interface and that the reduced thermal conductance observed for teflon derivatives originates in a reduced phonon injection life time...
February 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28150267/-the-adaptation-to-an-implantable-cardioverter-defibrillator-in-a-survivor-of-sudden-death-due-to-fatal-arrhythmia
#17
Ching-Yi Chou, Tzu-Yen Chen, Chyi Lo
The purpose of this article was to explore the adaptation to an implantable cardioverter defibrillator (ICD) of a survivor of sudden death due to fatal arrhythmia. Owing to medical urgency, the case patient, a woman, did not have sufficient time to get prepared mentally. Therefore, the case had difficulty coping and ultimately rejected the ICD device. During the period of hospital care (November 10th to 19th, 2015), in-depth interview and clinical observation were used to obtain information from the case. The interview was transcribed and analyzed by repeated reading...
February 2017: Hu Li za Zhi the Journal of Nursing
https://www.readbyqxmd.com/read/28149146/antifungal-susceptibility-and-risk-factors-in-patients-with-candidemia
#18
Cigdem Mermutluoglu, Ozcan Deveci, Saim Dayan, Emel Aslan, Fatma Bozkurt, Recep Tekin
OBJECTIVE: This study aimed to investigate the antifungal susceptibility, typology, and risk factors of candidemia among adult and pediatric inpatients at a university hospital. MATERIALS AND METHODS: A case-control study was designed, and data collected between December 2013 and December 2014 were retrospectively evaluated. The case group consisted of patients with candidemia. The control group was selected from the inpatients that did not develop candidemia but were admitted in the same clinic and during the same period as the candidemia group...
October 2016: Eurasian Journal of Medicine
https://www.readbyqxmd.com/read/28138796/javascript-access-to-dicom-network-and-objects-in-web-browser
#19
Ivan Drnasin, Mislav Grgić, Goran Gogić
Digital imaging and communications in medicine (DICOM) 3.0 standard provides the baseline for the picture archiving and communication systems (PACS). The development of Internet and various communication media initiated demand for non-DICOM access to PACS systems. Ever-increasing utilization of the web browsers, laptops and handheld devices, as opposed to desktop applications and static organizational computers, lead to development of different web technologies. The DICOM standard officials accepted those subsequently as tools of alternative access...
January 30, 2017: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/28120056/atlantoaxial-joint-distraction-with-a-new-expandable-device-for-the-treatment-of-basilar-invagination-with-preservation-of-the-c2-nerve-root-a-cadaveric-anatomical-study
#20
Filippo Maria Polli, Sokol Trungu, Massimo Miscusi, Stefano Forcato, Massimiliano Visocchi, Antonino Raco
BACKGROUND: Atlantoaxial joint distraction has been advocated for the decompression of the brain stem in patients affected by basilar invagination, avoiding direct transoral decompression. This technique requires C2 ganglion resection and it is often impossible to perform due to the peculiar bony anatomy. We describe a cadaveric anatomical study supporting the feasibility of C1-C2 distraction performed with an expandable device, allowing easier insertion of the tool and preservation of the C2 nerve root...
2017: Acta Neurochirurgica. Supplement
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