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https://www.readbyqxmd.com/read/28426003/a-temperate-rocky-super-earth-transiting-a-nearby-cool-star
#1
Jason A Dittmann, Jonathan M Irwin, David Charbonneau, Xavier Bonfils, Nicola Astudillo-Defru, Raphaëlle D Haywood, Zachory K Berta-Thompson, Elisabeth R Newton, Joseph E Rodriguez, Jennifer G Winters, Thiam-Guan Tan, Jose-Manuel Almenara, François Bouchy, Xavier Delfosse, Thierry Forveille, Christophe Lovis, Felipe Murgas, Francesco Pepe, Nuno C Santos, Stephane Udry, Anaël Wünsche, Gilbert A Esquerdo, David W Latham, Courtney D Dressing
M dwarf stars, which have masses less than 60 per cent that of the Sun, make up 75 per cent of the population of the stars in the Galaxy. The atmospheres of orbiting Earth-sized planets are observationally accessible via transmission spectroscopy when the planets pass in front of these stars. Statistical results suggest that the nearest transiting Earth-sized planet in the liquid-water, habitable zone of an M dwarf star is probably around 10.5 parsecs away. A temperate planet has been discovered orbiting Proxima Centauri, the closest M dwarf, but it probably does not transit and its true mass is unknown...
April 19, 2017: Nature
https://www.readbyqxmd.com/read/28423068/suicide-and-meteorological-factors-in-s%C3%A3-o-paulo-brazil-1996-2011-a-time-series-analysis
#2
Daniel H Bando, Chei T Teng, Fernando M Volpe, Eduardo de Masi, Luiz A Pereira, Alfésio L Braga
Objective: Considering the scarcity of reports from intertropical latitudes and the Southern Hemisphere, we aimed to examine the association between meteorological factors and suicide in São Paulo. Method: Weekly suicide records stratified by sex were gathered. Weekly averages for minimum, mean, and maximum temperature (°C), insolation (hours), irradiation (MJ/m2), relative humidity (%), atmospheric pressure (mmHg), and rainfall (mm) were computed. The time structures of explanatory variables were modeled by polynomial distributed lag applied to the generalized additive model...
April 13, 2017: Revista Brasileira de Psiquiatria
https://www.readbyqxmd.com/read/28421239/weight-bearing-recommendations-after-operative-fracture-treatment-fact-or-fiction-gait-results-with-and-feasibility-of-a-dynamic-continuous-pedobarography-insole
#3
Benedikt J Braun, Nils T Veith, Mika Rollmann, Marcel Orth, Tobias Fritz, Steven C Herath, Jörg H Holstein, Tim Pohlemann
PURPOSE: Rehabilitation after lower-extremity fractures is based on the physicians' recommendation for non-, partial-, or full weight-bearing. Clinical studies rely on this assumption, but continuous compliance or objective loading rates are unknown. The purpose of this study was to determine the compliance to weight-bearing recommendations by introducing a novel, pedobarography system continuously registering postoperative ground forces into ankle, tibial shaft and proximal femur fracture aftercare and test its feasibility for this purpose...
April 19, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28407507/concurrent-validation-of-an-index-to-estimate-fall-risk-in-community-dwelling-seniors-through-a-wireless-sensor-insole-system-a-pilot-study
#4
Mirko Di Rosa, Jeff M Hausdorff, Vera Stara, Lorena Rossi, Liam Glynn, Monica Casey, Stefan Burkard, Antonio Cherubini
Falls are a major health problem for older adults with immediate effects, such as fractures and head injuries, and longer term effects including fear of falling, loss of independence, and disability. The goals of the WIISEL project were to develop an unobtrusive, self-learning and wearable system aimed at assessing gait impairments and fall risk of older adults in the home setting; assessing activity and mobility in daily living conditions; identifying decline in mobility performance and detecting falls in the home setting...
April 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28397136/an-experimental-animal-model-for-percutaneous-procedures-used-in-trigeminal-neuralgia
#5
Johannes Herta, Wei-Te Wang, Romana Höftberger, Sabine Breit, Sibylle Kneissl, Helga Bergmeister, Heber Ferraz-Leite
OBJECT: This study describes an experimental rabbit model that allows the reproduction of percutaneous operations that are used in patients with trigeminal neuralgia (TN). Attention was given to an exact anatomical description of the rabbit's middle cranial fossa as well as the establishment of conditions for a successful procedure. METHODS: Morphometric measurements were taken from 20 rabbit skulls and CT scans. The anatomy of the trigeminal nerve, as well as its surrounding structures, was assessed by bilateral dissection of 13 New Zealand white rabbits (NWR)...
April 10, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28384281/month-of-birth-and-level-of-insolation-as-risk-factors-for-multiple-sclerosis-in-poland
#6
Paweł Dobrakowski, Michał Bogocz, Kamil Cholewa, Mateusz Rajchel, Katarzyna Kapica-Topczewska, Sławomir Wawrzyniak, Halina Bartosik-Psujek, Alina Kułakowska, Dorota Koziarska, Monika Adamczyk-Sowa
INTRODUCTION: Many studies have shown that people born in the spring are at a higher risk of developing multiple sclerosis (MS). This may be associated with lower levels of sun exposure, and consequently, lower levels of vitamin D3 during pregnancy. However, these relationships have not been verified thus far in any countries in Central Europe. OBJECTIVE: The aim of our study was to determine the frequency distribution of births for each calendar month in patients suffering from MS in Poland...
2017: PloS One
https://www.readbyqxmd.com/read/28384253/epicatechin-elicits-myod-dependent-myoblast-differentiation-and-myogenic-conversion-of-fibroblasts
#7
Sang-Jin Lee, Young-Eun Leem, Ga-Yeon Go, Younhee Choi, Yoo Jin Song, Insol Kim, Do Yoon Kim, Yong Kee Kim, Dong-Wan Seo, Jong-Sun Kang, Gyu-Un Bae
Prevention of age-associated reduction in muscle mass and function is required to manage a healthy life. Supplemental (-)-Epicatechin (EC) appears to act as a potential regulator for muscle growth and strength. However, its cellular and molecular mechanisms as a potential muscle growth agent have not been studied well. In the current study, we investigated a role of EC in differentiation of muscle progenitors to gain the molecular insight into how EC regulates muscle growth. EC enhanced myogenic differentiation in a dose-dependent manner through stimulation of promyogenic signaling pathways, p38MAPK and Akt...
2017: PloS One
https://www.readbyqxmd.com/read/28382929/climate-variations-on-earth-like-circumbinary-planets
#8
Max Popp, Siegfried Eggl
The discovery of planets orbiting double stars at close distances has sparked increasing scientific interest in determining whether Earth-analogues can remain habitable in such environments and how their atmospheric dynamics is influenced by the rapidly changing insolation. In this work we present results of the first three-dimensional numerical experiments of a water-rich planet orbiting a double star. We find that the periodic forcing of the atmosphere has a noticeable impact on the planet's climate. Signatures of the forcing frequencies related to the planet's as well as to the binary's orbital periods are present in a variety of climate indicators such as temperature and precipitation, making the interpretation of potential observables challenging...
April 6, 2017: Nature Communications
https://www.readbyqxmd.com/read/28366386/a-bayesian-network-approach-to-determine-environmental-factors-controlling-karenia-selliformis-occurrences-and-blooms-in-the-gulf-of-gab%C3%A3-s-tunisia
#9
Wafa Feki-Sahnoun, Asma Hamza, Hasna Njah, Nouha Barraj, Mabrouka Mahfoudi, Ahmed Rebai, Malika Bel Hassen
A Bayesian Network modeling framework is introduced to explore the effect of physical and meteorological factors on the dinoflagellate red tide forming Karenia selliformis in various sampling sites of the national phytoplankton monitoring program. The proposed models took into account the physical environment effects (salinity, temperature and tide amplitude), meteorological constraints (evaporation, air temperature, insolation, rainfall, atmospheric pressure and humidity), sampling months and sites on both Karenia selliformis occurrences and blooms...
March 2017: Harmful Algae
https://www.readbyqxmd.com/read/28364350/-conservative-treatment-of-hallux-valgus-what-can-be-achieved-with-splints-and-insoles
#10
R A Fuhrmann, W Rippel, A Traub
In hallux valgus syndrome conservative measures can only be applied to relieve the symptoms. Insoles, orthoses, and toe alignment splints cannot improve forefoot deformity. However, symptoms due to increased local pressure can be alleviated with orthotic devices. After surgically realigning the hallux, splints are helpful to retain joint congruency and assure proper toe position during soft tissue healing.
March 31, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28358689/prospective-fall-risk-prediction-models-for-older-adults-based-on-wearable-sensors
#11
Jennifer Howcroft, Jonathan Kofman, Edward Lemaire
Wearable sensors can provide quantitative, gait-based assessments that can translate to point-of-care environments. This investigation generated elderly fall-risk predictive models based on wearable-sensor-derived gait data and prospective fall occurrence; and identified the optimal sensor type, location, and combination for single and dual-task walking. 75 individuals who reported six month prospective fall occurrence (75.2 ± 6.6 years; 47 non-fallers, 28 fallers) walked 7.62 m under single-task and dual-task conditions while wearing pressure-sensing insoles and tri-axial accelerometers at the head, pelvis, and left and right shanks...
March 24, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28358355/identifying-large-scale-patterns-of-unpredictability-and-response-to-insolation-in-atmospheric-data
#12
Fernando Arizmendi, Marcelo Barreiro, Cristina Masoller
Understanding the complex dynamics of the atmosphere is of paramount interest due to its impact in the entire climate system and in human society. Here we focus on identifying, from data, the geographical regions which have similar atmospheric properties. We study surface air temperature (SAT) time series with monthly resolution, recorded at a regular grid covering the Earth surface. We consider two datasets: NCEP CDAS1 and ERA Interim reanalysis. We show that two surprisingly simple measures are able to extract meaningful information: i) the distance between the lagged SAT and the incoming solar radiation and ii) the Shannon entropy of SAT and SAT anomalies...
March 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28351488/investigating-the-effect-of-external-trauma-through-a-dynamic-system-modeling-approach-for-clustering-causality-in-diabetic-foot-ulcer-development
#13
Parisa Salimi, Mohsen Hamedi, Nima Jamshidi, Milad Vismeh
Diabetes and its associated complications are realized as one of the most challenging medical conditions threatening more than 29 million people only in the USA. The forecasts suggest a suffering of more than half a billion worldwide by 2030. Amid all diabetic complications, diabetic foot ulcer (DFU) has attracted much scientific investigations to lead to a better management of this disease. In this paper, a system thinking methodology is adopted to investigate the dynamic nature of the ulceration. The causal loop diagram as a tool is utilized to illustrate the well-researched relations and interrelations between causes of the DFU...
April 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28338396/should-ballet-dancers-vary-postures-and-under-foot-surfaces-when-practicing-postural-balance
#14
Nili Steinberg, Gordon Waddington, Roger Adams, Janet Karin, Oren Tirosh
BACKGROUND: Postural balance (PB) is an important component skill for professional dancers. However, the effects of different types of postures and different underfoot surfaces on PB have not been adequately addressed. PURPOSE: The main aim of the present study was to investigate the effect of different conditions of footwear, surfaces, and standing positions on static and dynamic PB ability of young ballet dancers. METHOD: Thirty-six male and female young professional ballet dancers (aged 14-19) completed static and dynamic balance testing, measured by head and lumbar accelerometers, while standing on one leg in the turn-out position, under six different conditions: 1...
March 24, 2017: Motor Control
https://www.readbyqxmd.com/read/28324752/vertical-ground-reaction-force-during-standing-and-walking-are-they-related-to-bone-mineral-density-left-right-asymmetries
#15
Marina Brozgol, Mira Arbiv, Anat Mirelman, Talia Herman, Jeffrey M Hausdorff, Nachum Vaisman
Osteoporosis is a systemic skeletal disease that is characterized by reduced bone mass, deterioration of bone tissue and skeletal fragility. The purpose of the current study was to determine whether asymmetrical femur bone mineral density (BMD) is associated with asymmetrical gait and standing. We compared measures of gait and standing asymmetry in subjects with (n=38) and without (n=11) significant left-right differences in BMD. Participants walked for 72m at their comfortable speed and stood quietly for 60s while outfitted with pressure-sensitive insoles...
March 7, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28320506/unexpected-walking-perturbations-reliability-and-validity-of-a-new-treadmill-protocol-to-provoke-muscular-reflex-activities-at-lower-extremities-and-the-trunk
#16
Tilman Engel, Juliane Mueller, Stephan Kopinski, Antje Reschke, Steffen Mueller, Frank Mayer
Instrumented treadmills offer the potential to generate standardized walking perturbations, which are particularly rapid and powerful. However, technical requirements to release adequate perturbations regarding timing, duration and amplitude are demanding. This study investigated the test-retest reliability and validity of a new treadmill perturbation protocol releasing rapid and unexpected belt perturbations to provoke muscular reflex responses at lower extremities and the trunk. Fourteen healthy participants underwent two identical treadmill walking protocols, consisting of 10 superimposed one-sided belt perturbations (100ms duration; 2m/s amplitude), triggered by a plantar pressure insole 200ms after heel contact...
April 11, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28303943/increased-chemical-weathering-during-the-deglacial-to-mid-holocene-summer-monsoon-intensification
#17
Pavan Miriyala, N P Sukumaran, B Nagender Nath, P B Ramamurty, A V Sijinkumar, B Vijayagopal, V Ramaswamy, Tyson Sebastian
Chemical weathering and the ensuing atmospheric carbon dioxide consumption has long been considered to work on geological time periods until recently when some modelling and natural records have shown that the weathering-related CO2 consumption can change at century to glacial-interglacial time scale. Last glacial to interglacial transition period is a best test case to understand the interplay between Pco2-temperature-chemical weathering when a pulse of rapid chemical weathering was initiated. Here we show, from a high resolution 54 ka record from the Andaman Sea in the northern Indian Ocean, that the chemical weathering responds to deglacial to mid-Holocene summer monsoon intensification in the Myanmar watersheds...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28302594/a-human-centered-design-methodology-to-enhance-the-usability-human-factors-and-user-experience-of-connected-health-systems-a-three-phase-methodology
#18
Richard Harte, Liam Glynn, Alejandro Rodríguez-Molinero, Paul Ma Baker, Thomas Scharf, Leo R Quinlan, Gearóid ÓLaighin
BACKGROUND: Design processes such as human-centered design, which involve the end user throughout the product development and testing process, can be crucial in ensuring that the product meets the needs and capabilities of the user, particularly in terms of safety and user experience. The structured and iterative nature of human-centered design can often present a challenge when design teams are faced with the necessary, rapid, product development life cycles associated with the competitive connected health industry...
March 16, 2017: JMIR Human Factors
https://www.readbyqxmd.com/read/28299934/antibacterial-composite-film-based-triboelectric-nanogenerator-for-harvesting-walking-energy
#19
Guang Qin Gu, Chang Bao Han, Jing Jing Tian, Cun Xin Lu, Chuan He, Tao Jiang, Zhou Li, Zhong Lin Wang
As a green and eco-friendly technology, triboelectric nanogenerator (TENG) can harvest energy from human motion to generate electricity, so TENGs have been widely applied in wearable electronic devices to replace traditional batteries. However, the surface of these TENGs is easily contaminated and breeds bacteria, which is a threat to human health. Here, we report an antibacterial composite film-based triboelectric nanogenerator (ACF-TENG) that uses Ag-exchanged zeolite (Ag-zeolite) and polypropylene (PP) composite film as the triboelectric layer...
March 27, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28271930/plantar-static-pressure-distribution-in-normal-feet-using-cotton-socks-with-different-structures
#20
Zeynab Soltanzadeh, Saeed Shaikhzadeh Najar, Mohammad Haghpanahi, Mohammd Reza Mohajeri-Tehrani
BACKGROUND: The major goal of investigating plantar pressure in patients with pain or those at risk for skin injury is to reduce pressure under prominent metatarsal heads, especially the first and second metatarsals. In research, the insole is used to reduce plantar pressure by increasing the contact area in the midfoot region, which, in turn, induces an uncomfortable feeling near the arch during walking. It is deduced that sock structure can redistribute plantar pressure distribution...
January 2017: Journal of the American Podiatric Medical Association
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