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Remote Presence

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https://www.readbyqxmd.com/read/28640874/risk-factors-are-different-for-deep-and-lobar-remote-hemorrhages-after-intravenous-thrombolysis
#1
Luis Prats-Sanchez, Alejandro Martínez-Domeño, Pol Camps-Renom, Raquel Delgado-Mederos, Daniel Guisado-Alonso, Rebeca Marín, Laura Dorado, Salvatore Rudilosso, Alejandra Gómez-González, Francisco Purroy, Manuel Gómez-Choco, David Cánovas, Dolores Cocho, Moises Garces, Sonia Abilleira, Joan Martí-Fàbregas
BACKGROUND AND PURPOSE: Remote parenchymal haemorrhage (rPH) after intravenous thrombolysis is defined as hemorrhages that appear in brain regions without visible ischemic damage, remote from the area of ischemia causing the initial stroke symptom. The pathophysiology of rPH is not clear and may be explained by different underlying mechanisms. We hypothesized that rPH may have different risk factors according to the bleeding location. We report the variables that we found associated with deep and lobar rPH after intravenous thrombolysis...
2017: PloS One
https://www.readbyqxmd.com/read/28633358/phylogeography-of-herbarium-specimens-of-asexually-propagated-paper-mulberry-broussonetia-papyrifera-l-l-h%C3%A3-r-ex-vent-moraceae-reveals-genetic-diversity-across-the-pacific
#2
Claudia Payacan, Ximena Moncada, Gloria Rojas, Andrew Clarke, Kuo-Fang Chung, Robin Allaby, Daniela Seelenfreund, Andrea Seelenfreund
Background and Aims: Paper mulberry or Broussonetia papyrifera (L.) L'Hér. ex Vent. (Moraceae) is a dioecious species native to continental South-east Asia and East Asia, including Taiwan, that was introduced to the Pacific by pre-historic voyagers and transported intentionally and propagated asexually across the full range of Austronesian expansion from Taiwan to East Polynesia. The aim of this study was to gain insight into the dispersal of paper mulberry into Oceania through the genetic analysis of herbaria samples which represent a more complete coverage of the historical geographical range of the species in the Pacific before later introductions and local extinctions occurred...
June 14, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28630043/the-small-gtpases-k-ras-n-ras-and-h-ras-have-distinct-biochemical-properties-determined-by-allosteric-effects
#3
Christian W Johnson, Derion Reid, Jillian A Parker, Shores Salter, Ryan Knihtila, Petr Kuzmic, Carla Mattos
H-, K-, and N-Ras are small GTPases that are important in the control of cell proliferation, differentiation and survival, and their mutants occur frequently in human cancers. The G-domain, which catalyzes GTP hydrolysis and mediates downstream signaling, is 95% conserved between the Ras isoforms. Due to their very high sequence identity, biochemical studies done on H-Ras have been considered representative of all three Ras proteins. We show here that this is not a valid assumption. Using enzyme kinetic assays under identical conditions, we observed clear differences between the three isoforms in intrinsic catalysis of GTP by Ras in the absence and presence of the Ras-binding domain (RBD) of the C-Raf Kinase protein (Raf-RBD)...
June 19, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28616369/management-of-an-obstructed-tracheostomy-in-a-limited-resource-setting
#4
Julie Chiaravalli, Norman Lufesi, Elwin Shawa, Vitumbiko Nkhoma, Elaine Sigalet, Adam Dubrowski
Obstruction of a tracheostomy tube is a common cause of respiratory compromise in adults and pediatric patients, which can lead to a life-threatening emergency if it is not properly managed. Compromised airway patency has many potential etiologies; however, the scenario described in this technical report focuses specifically on the management of tracheostomy obstruction through the presence of a mucus plug, blood clot, or highly viscous secretions. The simulation described in this technical report was written to be conducted as an in-situ simulation within the intensive care unit (ICU) at Mzuzu Central Hospital, Malawi...
May 13, 2017: Curēus
https://www.readbyqxmd.com/read/28614141/role-of-hemorrhagic-shock-in-experimental-polytrauma
#5
Stephanie Denk, Sebastian Weckbach, Philipp Eisele, Christian K Braun, Rebecca Wiegner, Julia J Ohmann, Lisa Wrba, Felix M Hoenes, Philipp Kellermann, Peter Radermacher, Ulrich Wachter, Sebastian Hafner, Oscar McCook, Anke Schultze, Annette Palmer, Sonja Braumüller, Florian Gebhard, Markus Huber-Lang
Hemorrhagic shock (HS) after tissue trauma increases the complication and mortality rate of polytrauma (PT) patients. Although several murine trauma models have been introduced, there is a lack of knowledge about the exact impact of an additional HS. We hypothesized that HS significantly contributes to organ injury, which can be reliably monitored by detection of specific organ damage markers.Therefore we established a novel clinically relevant PT plus HS model in C57BL/6 mice which were randomly assigned to control, HS, PT or PT+HS procedure (n = 8 per group)...
June 13, 2017: Shock
https://www.readbyqxmd.com/read/28612939/using-soundscapes-to-detect-variable-degrees-of-human-influence-on-tropical-forests-in-papua-new-guinea
#6
Zuzana Burivalova, Michael Towsey, Tim Boucher, Anthony Truskinger, Cosmas Apelis, Paul Roe, Edward T Game
There is global concern about tropical forest degradation, in part, because of the associated loss of biodiversity. Communities and indigenous people play a fundamental role in tropical forest management and they are often efficient at preventing forest degradation. However, monitoring changes in biodiversity due to degradation, especially at a scale appropriate to local tropical forest management, is marred with difficulties including the need for expert training, inconsistency across observers, and the lack of baseline or reference data...
June 14, 2017: Conservation Biology: the Journal of the Society for Conservation Biology
https://www.readbyqxmd.com/read/28602249/ten-year-survey-of-cyanobacterial-blooms-in-ohio-s-waterbodies-using-satellite-remote-sensing
#7
Tyler Gorham, Yuanyuan Jia, C K Shum, Jiyoung Lee
Cyanobacterial blooms are on the rise globally and are capable of adversely impacting human, animal, and ecosystem health. Blooms dominated by cyanobacteria species capable of toxin-production are commonly observed in eutrophic freshwater. The presence of cyanobacterial blooms in selected Ohio lakes, such as Lake Erie and Grand Lake St. Marys, has been well studied, but much less is known about the geographic distribution of these blooms across all of Ohio's waterbodies. We examined the geographic distribution of cyanobacterial blooms in Ohio's waterbodies from 2002 to 2011, using a nested semi-empirical algorithm and remotely sensed data from the Medium Resolution Imaging Spectrometer (MERIS) onboard the European Space Agency's Envisat...
June 2017: Harmful Algae
https://www.readbyqxmd.com/read/28599085/exploring-the-putative-role-of-trpv1-dependent-cgrp-release-in-remote-hind-preconditioning-induced-cardioprotection
#8
Puneet Kaur Randhawa, Amteshwar Singh Jaggi
Remote ischemic preconditioning (RIPC) is a phenomenon whereby transient non-lethal ischemia and reperfusion episodes confer protection against prolonged ischemia-reperfusion-induced injury. However, the underlying intracellular signaling has not been extensively explored. The present study aims to inspect the putative involvement of TRPV1 -dependent CGRP release in mediating remote hind limb preconditioning-induced cardioprotection. In the present study, remote hind limb preconditioning stimulus was delivered (4 consecutive episodes of 5 minutes of ischemia-reperfusion) using a blood pressure cuff tied at the inguinal level of the rat...
June 9, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28598533/prevalence-of-trachomatous-trichiasis-in-australia-the-national-eye-health-survey
#9
Mohamed Dirani, Stuart Keel, Joshua Foreman, Peter van Wijngaarden, Hugh R Taylor
IMPORTANCE: Australia is the only developed country to still have pockets of endemic trachoma. The research provides up-to-date, population-based prevalence data of later complications of trachoma amongst a national sample of Indigenous adults. BACKGROUND: To report the prevalence of trachomatous trichiasis (TT) in Indigenous Australians aged 40 years and over. DESIGN: Population-based cross-sectional study PARTICIPANTS: A total of 1738 (41% male) Indigenous Australians aged 40 years or older, living among 30 randomly selected Australian sites, stratified by remoteness...
June 9, 2017: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28598343/from-urban-municipalities-to-polar-bioremediation-the-characterisation-and-contribution-of-biogenic-minerals-for-water-treatment
#10
Benjamin L Freidman, Kathy A Northcott, Peta Thiel, Sally L Gras, Ian Snape, Geoff W Stevens, Kathryn A Mumford
Minerals of biological origin have shown significant potential for the separation of contaminants from water worldwide. This study details the contribution of biologically derived minerals to water treatment operations, with a focus on filtration media from urban municipalities and remote cold regions. The results support biofilm-embedded iron and manganese to be the building blocks of biogenic mineral development on activated carbon and nutrient-amended zeolites. The presence of similar iron and manganese oxidising bacterial species across all filter media supports the analogous morphologies of biogenic minerals between sites and suggests that biological water treatment processes may be feasible across a range of climates...
June 2017: Journal of Water and Health
https://www.readbyqxmd.com/read/28597974/a-simple-cell-transport-device-keeps-culture-alive-and-functional-during-shipping
#11
Paula G Miller, Ying I Wang, Glen Swan, Michael L Shuler
Transporting living complex cellular constructs through the mail while retaining their full viability and functionality is challenging. During this process, cells often suffer from exposure to suboptimal life-sustaining conditions (e.g. temperature, pH), as well as damage due to shear stress. We have developed a transport device for shipping intact cell/tissue constructs from one facility to another that overcomes these obstacles. Our transport device maintained three different cell lines (Caco2, A549, and HepG2 C3A) individually on transwell membranes with high viability (above 97%) for 48 h under simulated shipping conditions without an incubator...
June 9, 2017: Biotechnology Progress
https://www.readbyqxmd.com/read/28594808/-risk-factors-for-progression-of-atherosclerosis-of-the-shunted-coronary-artery-in-the-remote-postoperative-period
#12
V V Bazylev, E V Nemchenko, A A Pavlov, A I Mikuliak, V A Karnakhin
The study was aimed at revealing risk factors for progression of atherosclerosis in the shunted coronary artery in the remote period following coronary artery bypass grafting. Our prospective study included a total of 292 patients having endured coronary artery bypass grafting. All patients were divided in two groups depending on the type of the bypass grafts used: either autoarterial shunts (Group 1) or autovenous grafts (Group 2). We thus assessed a total of 516 autoarterial grafts and 257 autovenous grafts, as well as the coronary arteries shunted thereby...
2017: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/28594802/-remote-results-of-carotid-endarterectomy-in-patients-with-type-2-diabetes-mellitus
#13
Iu I Kazakov, A P Kas'ianenko, N Iu Sokolova, A V Bakulina, A O Iakovlev
The authors comparatively analysed the remote results of carotid endarterectomy and risk factors for unfavourable outcomes in patients with and without type 2 diabetes mellitus (DM). The outcomes of carotid endarterectomy were studied in a total of 168 patients, with the follow-up terms up to 8 years. Depending on the presence or absence of DM, the patients were divided into two groups. Group One comprised 79 patients with an atherosclerotic lesion of the internal carotid artery and accompanying DM, with Group Two consisting of 89 non-diabetic patients...
2017: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/28590737/reagent-free-quantification-of-aqueous-free-chlorine-via-electrical-readout-of-colorimetrically-functionalized-pencil-lines
#14
Amirmasoud Mohtasebi, Andrew D Broomfield, Tanzina Chowdhury, P Ravi Selvaganapathy, Peter Kruse
Colorimetric methods are commonly used to quantify free chlorine in drinking water. However, these methods are not suitable for reagent-free, continuous, and autonomous applications. Here, we demonstrate how functionalization of a pencil-drawn film with phenyl-capped aniline tetramer (PCAT) can be used for quantitative electric readout of free chlorine concentrations. The functionalized film can be implemented in a simple fluidic device for continuous sensing of aqueous free chlorine concentrations. The sensor is selective to free chlorine and can undergo a reagent-free reset for further measurements...
June 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28579695/self-powered-autonomous-biological-oxygen-demand-biosensor-for-online-water-quality-monitoring
#15
Grzegorz Pasternak, John Greenman, Ioannis Ieropoulos
Standard Biological Oxygen Demand (BOD) analysis requires 5 days to complete. To date, microbial fuel cell biosensors used as an alternative method for BOD assessment requires external apparatus, which limits their use for on-line monitoring in remote, off-grid locations. In this study, a self-powered, floating biosensor was developed for online water quality monitoring. This approach eliminated the need for external apparatus and maintenance that would otherwise be required by other techniques. The biosensor was able to detect urine in freshwater and turn ON a visual and sound cues (85 dB)...
June 2017: Sensors and Actuators. B, Chemical
https://www.readbyqxmd.com/read/28578474/differentiating-perforated-from-non-perforated-appendicitis-on-contrast-enhanced-magnetic-resonance-imaging
#16
Daniel G Rosenbaum, Gulce Askin, Debra M Beneck, Arzu Kovanlikaya
BACKGROUND: The role of magnetic resonance imaging (MRI) in pediatric appendicitis is increasing; MRI findings predictive of appendiceal perforation have not been specifically evaluated. OBJECTIVE: To assess the performance of MRI in differentiating perforated from non-perforated appendicitis. MATERIALS AND METHODS: A retrospective review of pediatric patients undergoing contrast-enhanced MRI and subsequent appendectomy was performed, with surgicopathological confirmation of perforation...
June 3, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28545151/provenance-based-data-integrity-checking-and-verification-in-cloud-environments
#17
Muhammad Imran, Helmut Hlavacs, Inam Ul Haq, Bilal Jan, Fakhri Alam Khan, Awais Ahmad
Cloud computing is a recent tendency in IT that moves computing and data away from desktop and hand-held devices into large scale processing hubs and data centers respectively. It has been proposed as an effective solution for data outsourcing and on demand computing to control the rising cost of IT setups and management in enterprises. However, with Cloud platforms user's data is moved into remotely located storages such that users lose control over their data. This unique feature of the Cloud is facing many security and privacy challenges which need to be clearly understood and resolved...
2017: PloS One
https://www.readbyqxmd.com/read/28541913/virtual-spirometry-and-activity-monitoring-using-multichannel-electrical-impedance-plethysmographs-in-ambulatory-settings
#18
Hassan Aqeel Khan, Amit Gore, Jeffrey Ashe, Shantanu Chakrabartty
Continuous monitoring of respiratory patterns and physical activity levels can be useful for remote health management of patients with conditions such as heart disease and chronic obstructive pulmonary disease. In a clinical setting, spirometers serve as the gold standard for monitoring respiratory patterns such as breathing rate and changes in lung volume. However, direct measurements using a spirometer requires placement of a sensor in the patient's airway and is thus infeasible for continuous monitoring in nonclinical, ambulatory settings...
May 23, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28541276/a-reaction-mode-of-carbene-catalysed-aryl-aldehyde-activation-and-induced-phenol-oh-functionalization
#19
Xingkuan Chen, Hongling Wang, Kazuki Doitomi, Chong Yih Ooi, Pengcheng Zheng, Wangsheng Liu, Hao Guo, Song Yang, Bao-An Song, Hajime Hirao, Yonggui Robin Chi
The research in the field of asymmetric carbene organic catalysis has primarily focused on the activation of carbon atoms in non-aromatic scaffolds. Here we report a reaction mode of carbene catalysis that allows for aromatic aldehyde activation and remote oxygen atom functionalization. The addition of a carbene catalyst to the aldehyde moiety of 2-hydroxyl aryl aldehyde eventually enables dearomatization and remote OH activation. The catalytic process generates a type of carbene-derived intermediate with an oxygen atom as the reactive centre...
May 25, 2017: Nature Communications
https://www.readbyqxmd.com/read/28539139/relaxation-with-immersive-natural-scenes-presented-using-virtual-reality
#20
Allison P Anderson, Michael D Mayer, Abigail M Fellows, Devin R Cowan, Mark T Hegel, Jay C Buckey
INTRODUCTION: Virtual reality (VR) can provide exposure to nature for those living in isolated confined environments. We evaluated VR-presented natural settings for reducing stress and improving mood. METHODS: There were 18 participants (9 men, 9 women), ages 32 ± 12 yr, who viewed three 15-min 360° scenes (an indoor control, rural Ireland, and remote beaches). Subjects were mentally stressed with arithmetic before scenes. Electrodermal activity (EDA) and heart rate variability measured psycho-physiological arousal...
June 1, 2017: Aerospace Medicine and Human Performance
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