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https://www.readbyqxmd.com/read/28333777/arteriovenous-lesions-of-the-internal-auditory-canal
#1
Charles L Anzalone, John I Lane, Michael J Link, Matthew L Carlson
OBJECTIVE: To describe a unique case of an asymptomatic arteriovenous lesion of the internal auditory canal (IAC) and present the associated imaging findings. METHODS: Retrospective case report and review of the literature. RESULTS: A 55-year-old man presented for further evaluation of a left-sided sudden sensorineural hearing loss that occurred 8 years earlier. Careful review of outside serial magnetic resonance (MR) imaging revealed a contralateral, ill-defined right-sided IAC mass with low T2 signal and subtle peripheral enhancement on postcontrast T1-weighted sequencing...
March 22, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28321966/sleep-disordered-breathing-in-chronic-heart-failure-is-highly-variable-when-measured-remotely-using-a-novel-non-contact-biomotion-sensor
#2
Kenneth McDonald, Rory O'Hanlon, Henry Oluwasefunmi Savage, Rami N Khushaba, Michael Colefax, Steven Farrugia, Faizan Javed, Klaus Schindhelm, Ian Wilcox, Martin R Cowie
We used a remotely monitored non-contact biosensor (SleepMinder™) to measure breathing during sleep (SDB) in a prospective study of 91 patients with stable class II to IV heart failure (HF). The device algorithm measures a surrogate of the traditional apnoea/hypopnoea index (AHI) measured in polysomnographic sleep studies. Data was transmitted daily to a central monitoring centre and analysed in consecutive 2-week blocks. A total of 37 465 nights over 3-24 months was analysed. An AHI of >15/h was considered clinically significant...
March 21, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28319855/microbial-bioreporters-of-trace-explosives
#3
REVIEW
Benjamin Shemer, Ori Koshet, Sharon Yagur-Kroll, Shimshon Belkin
Since its introduction as an explosive in the late 19th century, 2,4,6-trinitrotoluene (TNT), along with other explosive compounds, has left numerous environmental marks. One of these is widespread soil and water pollution by trace explosives in military proving grounds, manufacturing facilities, or actual battlefields. Another dramatic impact is that exerted by the millions of landmines and other explosive devices buried in large parts of the world, causing extensive loss of life, injuries, and economical damage...
March 17, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/28304232/a-systematic-evaluation-of-intraoperative-white-matter-tract-shift-in-pediatric-epilepsy-surgery-using-high-field-mri-and-probabilistic-high-angular-resolution-diffusion-imaging-tractography
#4
Joseph Yuan-Mou Yang, Richard Beare, Marc L Seal, A Simon Harvey, Vicki A Anderson, Wirginia J Maixner
OBJECTIVE Characterization of intraoperative white matter tract (WMT) shift has the potential to compensate for neuronavigation inaccuracies using preoperative brain imaging. This study aimed to quantify and characterize intraoperative WMT shift from the global hemispheric to the regional tract-based scale and to investigate the impact of intraoperative factors (IOFs). METHODS High angular resolution diffusion imaging (HARDI) diffusion-weighted data were acquired over 5 consecutive perioperative time points (MR1 to MR5) in 16 epilepsy patients (8 male; mean age 9...
March 17, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28289991/quantitative-analysis-of-late-gadolinium-enhancement-in-hypertrophic-cardiomyopathy-comparison-of-diagnostic-performance-in-myocardial-fibrosis-between-gadobutrol-and-gadopentetate-dimeglumine
#5
Dongting Liu, Xiaohai Ma, Jiayi Liu, Lei Zhao, Hui Chen, Lei Xu, Zhonghua Sun, Zhanming Fan
The purpose of this study was to compare different semi-automated late gadolinium enhancement (LGE) quantification techniques using gadobutrol and gadopentetate dimeglumine contrast agents with regard to the diagnosis of fibrotic myocardium in patients with hypertrophic cardiomyopathy (HCM). Thirty patients with HCM underwent two cardiac MRI protocols with use of gadobutrol and gadopentetate dimeglumine. Contrast-to-noise ratio (CNR) between LGE area and remote myocardium (CNRremote), between LGE area and left ventricular blood pool (CNRpool), and signal-to-noise ratio (SNR) in LGE were compared...
March 13, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28286594/locking-it-down-the-privacy-and-security-of-mobile-medication-apps
#6
Kelly Grindrod, Jonathan Boersema, Khrystine Waked, Vivian Smith, Jilan Yang, Catherine Gebotys
OBJECTIVE: To explore the privacy and security of free medication applications (apps) available to Canadian consumers. METHODS: The authors searched the Canadian iTunes store for iOS apps and the Canadian Google Play store for Android apps related to medication use and management. Using an Apple iPad Air 2 and a Google Nexus 7 tablet, 2 reviewers generated a list of apps that met the following inclusion criteria: free, available in English, intended for consumer use and related to medication management...
January 2017: Canadian Pharmacists Journal: CPJ, Revue des Pharmaciens du Canada: RPC
https://www.readbyqxmd.com/read/28285311/postural-transitions-during-activities-of-daily-living-could-identify-frailty-status-application-of-wearable-technology-to-identify-frailty-during-unsupervised-condition
#7
Saman Parvaneh, Jane Mohler, Nima Toosizadeh, Gurtej Singh Grewal, Bijan Najafi
BACKGROUND: Impairment of physical function is a major indicator of frailty. Functional performance tests have been shown to be useful for identification of frailty in older adults. However, these tests are often not translatable into unsupervised and remote monitoring of frailty status at home and/or community settings. OBJECTIVE: In this study, we explored daily postural transition quantified using a chest-worn wearable technology to identify frailty in community-dwelling older adults...
March 11, 2017: Gerontology
https://www.readbyqxmd.com/read/28284114/spectral-dependence-of-aerosol-light-absorption-at-an-urban-and-a-remote-site-over-the-tibetan-plateau
#8
Chong-Shu Zhu, Jun-Ji Cao, Ta-Feng Hu, Zhen-Xing Shen, Xue-Xi Tie, Hong Huang, Qi-Yuan Wang, Ru-Jin Huang, Zhu-Zi Zhao, Griša Močnik, Anthony D A Hansen
We present a study of aerosol light absorption by using a 7-wavelength Aethalometer model AE33 at an urban site (Lhasa) and a remote site (Lulang) in the Tibetan Plateau. Approximately 5 times greater aerosol absorption values were observed at Lhasa (53±46Mm(-1) at 370nm and 20±18Mm(-1) at 950nm, respectively) in comparison to Lulang (15±19Mm(-1) at 370nm and 4±5Mm(-1) at 950nm, respectively). Black carbon (BC) was the dominant light absorbing aerosol component at all wavelengths. The brown carbon (BrC) absorption at 370nm is 32±15% of the total aerosol absorption at Lulang, whereas it is 8±6% at Lhasa...
March 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28282216/remote-sensing-of-potential-biosignatures-from-rocky-liquid-or-icy-exo-planetary-surfaces
#9
Olivier Poch, Joachim Frey, Isabel Roditi, Antoine Pommerol, Bernhard Jost, Nicolas Thomas
To detect signs of life by remote sensing on objects of our Solar System and on exoplanets, the characterization of light scattered by surface life material could complement possible clues given by the atmospheric composition. We reviewed the reflectance spectra of a broad selection of major biomolecules that constitute terrestrial carbon-based life from 0.4 to 2.4 μm, and we discuss their detectability through atmospheric spectral windows. Biomolecule features in the near-infrared (0.8-2.4 μm) will likely be obscured by water spectral features and some atmospheric gases...
March 2017: Astrobiology
https://www.readbyqxmd.com/read/28280407/neurogenic-pathways-in-remote-ischemic-preconditioning-induced-cardioprotection-evidences-and-possible-mechanisms
#10
REVIEW
Amritpal Singh Aulakh, Puneet Kaur Randhawa, Nirmal Singh, Amteshwar Singh Jaggi
Remote ischemic preconditioning (RIPC) is an intrinsic phenomenon whereby 3~4 consecutive ischemia-reperfusion cycles to a remote tissue (noncardiac) increases the tolerance of the myocardium to sustained ischemiareperfusion induced injury. Remote ischemic preconditioning induces the local release of chemical mediators which activate the sensory nerve endings to convey signals to the brain. The latter consequently stimulates the efferent nerve endings innervating the myocardium to induce cardioprotection. Indeed, RIPC-induced cardioprotective effects are reliant on the presence of intact neuronal pathways, which has been confirmed using nerve resection of nerves including femoral nerve, vagus nerve, and sciatic nerve...
March 2017: Korean Journal of Physiology & Pharmacology
https://www.readbyqxmd.com/read/28269461/detection-of-fetal-kicks-using-body-worn-accelerometers-during-pregnancy-trade-offs-between-sensors-number-and-positioning
#11
Marco Altini, Patrick Mullan, Michiel Rooijakkers, Stefan Gradl, Julien Penders, Nele Geusens, Lars Grieten, Bjoern Eskofier
Monitoring fetal wellbeing is key in modern obstetrics. While fetal movement is routinely used as a proxy to fetal wellbeing, accurate, noninvasive, long-term monitoring of fetal movement is challenging. A few accelerometer-based systems have been developed in the past few years, to tackle common issues in ultrasound measurement and enable remote, self-administrated monitoring of fetal movement during pregnancy. However, many questions remain unanswered to date on the optimal setup in terms of body-worn accelerometers as well as signal processing and machine learning techniques used to detect fetal movement...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28263930/contralateral-hemispheric-brain-atrophy-after-primary-intracerebral-hemorrhage
#12
Ju-Hwi Kim, You-Sub Kim, Sung-Hyun Kim, Sang-Deok Kim, Jae-Young Park, Tae-Sun Kim, Sung-Pil Joo
OBJECTIVE: In patients with intracerebral hematoma (ICH), it is well known that brain atrophy occurs in the hemisphere ipsilateral to the hematoma. The present study aimed to investigate contralateral hemispheric volume changes in patients with ICH as well as related factors. METHODS: Of 112 patients with ICH who were surgically treated at our hospital between January 2011 and December 2015, 44 were included in the present study. We measured contralateral hemispheric brain areas in three different planes of axial brain computed tomography (CT) images...
March 2, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28261737/acid-promoted-cyclization-of-2-4-diaryl-1-1-1-trifluorobut-3-en-2-oles-and-their-tms-ethers-into-cf3-indenes
#13
Matvei Yu Martynov, Roman O Iakovenko, Anna N Kazakova, Irina A Boyarskaya, Aleksander V Vasilyev
2,4-Diaryl-1,1,1-trifluorobut-3-en-2-oles and their TMS-ethers in H2SO4 at room temperature in just 2 min are quantitatively cyclized into 1-aryl-3-trifluoromethyl-1H-indenes. The reaction proceeds through an intermediate formation of the corresponding CF3-allyl cations, which are cyclized regioselectively at the allyl carbon atom most remote from the CF3-group. The obtained CF3-indenes in solution of EtOAc in the presence of silica gel at room temperature over 4 h are quantitatively isomerized into 3-aryl-1-trifluoromethyl-1H-indenes...
March 6, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28259432/perfluoroalkyl-substances-in-the-maltese-environment-i-surface-water-and-rain-water
#14
G Sammut, E Sinagra, R Helmus, P de Voogt
The presence of perfluoroalkyl substances (PFASs) in rain water on the Maltese Islands is reported here for the first time and an extensive survey of these substances in surface water also reported. The Maltese archipelago lies at the centre of the Mediterranean Sea and consists of three main inhabited islands: Malta, Gozo and Comino. Surface water was collected from 41 valleys during the months of February and March 2015 at the peak of the wet season. Rain water was collected during the months of December 2014, February, August, September and October 2015...
March 2, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28257501/remote-sensing-based-approach-to-forecast-habitat-quality-under-climate-change-scenarios
#15
Juan M Requena-Mullor, Enrique López, Antonio J Castro, Domingo Alcaraz-Segura, Hermelindo Castro, Andrés Reyes, Javier Cabello
As climate change is expected to have a significant impact on species distributions, there is an urgent challenge to provide reliable information to guide conservation biodiversity policies. In addressing this challenge, we propose a remote sensing-based approach to forecast the future habitat quality for European badger, a species not abundant and at risk of local extinction in the arid environments of southeastern Spain, by incorporating environmental variables related with the ecosystem functioning and correlated with climate and land use...
2017: PloS One
https://www.readbyqxmd.com/read/28256209/an-investigation-of-the-efficacy-of-collaborative-virtual-reality-systems-for-moderated-remote-usability-testing
#16
Kapil Chalil Madathil, Joel S Greenstein
Collaborative virtual reality-based systems have integrated high fidelity voice-based communication, immersive audio and screen-sharing tools into virtual environments. Such three-dimensional collaborative virtual environments can mirror the collaboration among usability test participants and facilitators when they are physically collocated, potentially enabling moderated usability tests to be conducted effectively when the facilitator and participant are located in different places. We developed a virtual collaborative three-dimensional remote moderated usability testing laboratory and employed it in a controlled study to evaluate the effectiveness of moderated usability testing in a collaborative virtual reality-based environment with two other moderated usability testing methods: the traditional lab approach and Cisco WebEx, a web-based conferencing and screen sharing approach...
February 27, 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28240440/catalytic-enantioselective-%C3%AE-selective-additions-of-2-allylazaarenes-to-activated-ketones
#17
Xiangbin Bai, Guangkuo Zeng, Tianju Shao, Zhiyong Jiang
Reported herein is the first example of 2-allylazaarenes in asymmetric catalysis. Highly γ-selective allylation was demonstrated for activated ketones, including isatins and trifluoromethyl ketones. In the presence of either an amino-acid-based tertiary amine or quaternary ammonium salt catalyst, two series of tertiary hydroxy-containing moieties were installed at the remote δ-position of azaarenes in good chemical yields, excellent enantioselectivities, and E/Z ratios. The success of current γ-selective reactions should provide inspiration for expansion to other allylazaarene derivatives and would open up new paradigms for the synthesis of chiral γ- and/or δ-functionalized azaarenes...
February 27, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28238545/drawing-a-line-in-the-sand-effectiveness-of-off-highway-vehicle-management-in-california-s-sonoran-desert
#18
Nathan A Custer, Lesley A DeFalco, Kenneth E Nussear, Todd C Esque
Public land policies manage multiple uses while striving to protect vulnerable plant and wildlife habitats from degradation; yet the effectiveness of such policies are infrequently evaluated, particularly for remote landscapes that are difficult to monitor. We assessed the use and impacts of recreational vehicles on Mojave Desert washes (intermittent streams) in the Chemehuevi Desert Wildlife Management Area (DWMA) of southern California. Wash zones designated as open and closed to off-highway vehicle (OHV) activity were designed in part to protect Mojave desert tortoise (Gopherus agassizii) habitat while allowing recreation in designated areas...
May 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28227711/detection-of-fetal-kicks-using-body-worn-accelerometers-during-pregnancy-trade-offs-between-sensors-number-and-positioning
#19
Marco Altini, Patrick Mullan, Michiel Rooijakkers, Stefan Gradl, Julien Penders, Nele Geusens, Lars Grieten, Bjoern Eskofier, Marco Altini, Patrick Mullan, Michiel Rooijakkers, Stefan Gradl, Julien Penders, Nele Geusens, Lars Grieten, Bjoern Eskofier, Julien Penders, Michiel Rooijakkers, Nele Geusens, Stefan Gradl, Patrick Mullan, Lars Grieten, Bjoern Eskofier, Marco Altini
Monitoring fetal wellbeing is key in modern obstetrics. While fetal movement is routinely used as a proxy to fetal wellbeing, accurate, noninvasive, long-term monitoring of fetal movement is challenging. A few accelerometer-based systems have been developed in the past few years, to tackle common issues in ultrasound measurement and enable remote, self-administrated monitoring of fetal movement during pregnancy. However, many questions remain unanswered to date on the optimal setup in terms of body-worn accelerometers as well as signal processing and machine learning techniques used to detect fetal movement...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28218724/remote-sensing-of-urban-microclimate-change-in-l-aquila-city-italy-after-post-earthquake-depopulation-in-an-open-source-gis-environment
#20
Valerio Baiocchi, Fabio Zottele, Donatella Dominici
This work reports a first attempt to use Landsat satellite imagery to identify possible urban microclimate changes in a city center after a seismic event that affected L'Aquila City (Abruzzo Region, Italy), on 6 April 2009. After the main seismic event, the collapse of part of the buildings, and the damaging of most of them, with the consequence of an almost total depopulation of the historic city center, may have caused alterations to the microclimate. This work develops an inexpensive work flow-using Landsat Enhanced Thematic Mapper Plus (ETM+) scenes-to construct the evolution of urban land use after the catastrophic main seismic event that hit L'Aquila...
February 19, 2017: Sensors
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