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https://www.readbyqxmd.com/read/28207235/explorations-of-the-indenofluorenes-and-expanded-quinoidal-analogues
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
https://www.readbyqxmd.com/read/28117306/optical-contrast-of-2d-inse-on-sio2-si-and-transparent-substrates-using-bandpass-filters
#10
M Brotons-Gisbert, D Andres-Penares, J P Martínez-Pastor, A Cros, J F Sánchez-Royo
The particular optical and electronic properties recently reported for 2D InSe depict this 2D material as being very versatile for future electronic and optoelectronic devices with tunable and optimized functionalities. For its fundamental study and the development of practical applications, rapid and accurate identification methods of atomically thin InSe are essential. Here, we demonstrate an enhancement of the optical contrast between InSe nanosheets and the underlying SiO2/Si substrate by illuminating with a 40 nm wide bandpass filter centered at 500 nm...
January 24, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28110891/femoral-lengthening-in-children-and-adolescents
#11
REVIEW
Z Pejin
Current lengthening techniques are still based on the Ilizarov method and the concept of callotasis. Research and progress in medical devices have led to constant improvement in results. Hexapod fixators allow more precise correction of complex deformities, with shorter learning curve. Associating lengthening by external fixation (EF) to internal fixation (K-wire, intramedullary nail or locking plate) has reduced EF times and complications rates, while improving anatomic and functional results. Lengthening nails provides faster recovery of range of motion and return to activity during lengthening and consolidation, with better psychological tolerance...
January 16, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28098502/united-kingdom-national-paediatric-bilateral-project-results-of-professional-rating-scales-and-parent-questionnaires
#12
H E Cullington, D Bele, J C Brinton, S Cooper, M Daft, J Harding, N Hatton, J Humphries, M E Lutman, J Maddocks, J Maggs, K Millward, G O'Donoghue, S Patel, K Rajput, V Salmon, T Sear, A Speers, A Wheeler, K Wilson
OBJECTIVES: This fourteen-centre project used professional rating scales and parent questionnaires to assess longitudinal outcomes in a large non-selected population of children receiving simultaneous and sequential bilateral cochlear implants. METHODS: This was an observational non-randomized service evaluation. Data were collected at four time points: before bilateral cochlear implants or before the sequential implant, one year, two years, and three years after...
January 18, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/27958563/routing-light-with-ultrathin-nanostructures-beyond-the-diffraction-limit
#13
Haiyang Huang, Aimin Wu, Hao Li, Wei Li, Zhen Sheng, Shichang Zou, Xi Wang, Fuwan Gan
An open nanostructure consisting of a periodic chain of subwavelength-nanoparticles for compressing and routing light beyond the diffraction limit is proposed. The open nanostructure is ultrathin and compact, with a size much smaller than the wavelength of light. We demonstrate that our ultrathin open nanostructure provides functions that can route and manipulate light at the subwavelength scale and can also sharply bend and split light beams below the diffraction limit while exhibiting broadband, incident-angle-tolerant, and robust against disorder...
December 12, 2016: Optics Express
https://www.readbyqxmd.com/read/27958313/designing-perfect-linear-polarization-converters-using-perfect-electric-and-magnetic-conducting-surfaces
#14
Gaochao Zhou, Xudong Tao, Ze Shen, Guanghao Zhu, Biaobing Jin, Lin Kang, Weiwei Xu, Jian Chen, Peiheng Wu
We propose a kind of general framework for the design of a perfect linear polarization converter that works in the transmission mode. Using an intuitive picture that is based on the method of bi-directional polarization mode decomposition, it is shown that when the device under consideration simultaneously possesses two complementary symmetry planes, with one being equivalent to a perfect electric conducting surface and the other being equivalent to a perfect magnetic conducting surface, linear polarization conversion can occur with an efficiency of 100% in the absence of absorptive losses...
December 13, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27956835/comparison-of-the-glottic-view-during-video-intubation-in-super-obese-patients-a-series-of-cases
#15
Tomasz Gaszyński
Videolaryngoscopes improve the view of the entry to the larynx in morbidly obese patients. Super obesity is one of the risk factors for difficult mask ventilation as well as difficult intubation. Super obese patients should be intubated awake either with a fiber-optic scope or with a videolaryngoscope. The glottic view during video-intubation in super obese patients using different devices was compared. The McGrath MAC (MGM) was used in all patients and then compared to the King Vision (KV) in three patients, the APA videolaryngoscope in two patients and the Airtraq Avant with a video camera in four patients...
2016: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/27939189/linking-language-to-the-visual-world-neural-correlates-of-comprehending-verbal-reference-to-objects-through-pointing-and-visual-cues
#16
David Peeters, Tineke M Snijders, Peter Hagoort, Aslı Özyürek
In everyday communication speakers often refer in speech and/or gesture to objects in their immediate environment, thereby shifting their addressee's attention to an intended referent. The neurobiological infrastructure involved in the comprehension of such basic multimodal communicative acts remains unclear. In an event-related fMRI study, we presented participants with pictures of a speaker and two objects while they concurrently listened to her speech. In each picture, one of the objects was singled out, either through the speaker's index-finger pointing gesture or through a visual cue that made the object perceptually more salient in the absence of gesture...
December 6, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27938425/new-mobile-methods-for-dietary-assessment-review-of-image-assisted-and-image-based-dietary-assessment-methods
#17
C J Boushey, M Spoden, F M Zhu, E J Delp, D A Kerr
For nutrition practitioners and researchers, assessing dietary intake of children and adults with a high level of accuracy continues to be a challenge. Developments in mobile technologies have created a role for images in the assessment of dietary intake. The objective of this review was to examine peer-reviewed published papers covering development, evaluation and/or validation of image-assisted or image-based dietary assessment methods from December 2013 to January 2016. Images taken with handheld devices or wearable cameras have been used to assist traditional dietary assessment methods for portion size estimations made by dietitians (image-assisted methods)...
December 12, 2016: Proceedings of the Nutrition Society
https://www.readbyqxmd.com/read/27935725/van-der-waals-stacking-induced-topological-phase-transition-in-layered-ternary-transition-metal-chalcogenides
#18
Junwei Liu, Hua Wang, Chen Fang, Liang Fu, Xiaofeng Qian
Novel materials with nontrivial electronic and photonic band topology are crucial for realizing novel devices with low power consumption and heat dissipation and quantum computing free of decoherence. Here, we theoretically predict a novel class of ternary transition metal chalcogenides that exhibit dual topological characteristics, quantum spin Hall insulators (QSHIs) in their two-dimensional (2D) monolayers and topological Weyl semimetals in their 3D noncentrosymmetric crystals upon van der Waals (vdW) stacking...
December 9, 2016: Nano Letters
https://www.readbyqxmd.com/read/27914817/what-really-happens-in-the-home-the-medication-environment-of-urban-minority-youth
#19
Andrea A Pappalardo, Kelly Karavolos, Molly A Martin
BACKGROUND: Asthma disproportionately affects minority youth. Understanding the home medication environment and its relation to medication adherence can shape interventions to improve health outcomes. OBJECTIVE: The objective of this study was to describe the asthma medication environment in the homes of urban minority youth and to determine predictors of medication use and technique in this population. METHODS: Baseline data from 2 cohorts of minority youth with asthma in Chicago were combined for cross-sectional analysis...
November 30, 2016: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/27912768/quasi-continuous-parallel-online-scattered-light-fluorescence-and-dissolved-oxygen-tension-measurement-combined-with-monitoring-of-the-oxygen-transfer-rate-in-each-well-of-a-shaken-microtiter-plate
#20
Tobias Ladner, Markus Held, David Flitsch, Mario Beckers, Jochen Büchs
BACKGROUND: Microtiter plates (MTP) are often applied as culture vessels in high-throughput screening programs. If online measuring techniques are available, MTPs can also be applied in the first steps of process development. For such small-scale bioreactors dipping probes are usually too large; therefore, optical measurements are often used. For example, the BioLector technology allows for the online monitoring of scattered light and fluorescence in each well of a continuously orbitally shaken MTP...
December 3, 2016: Microbial Cell Factories
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