Read by QxMD icon Read

Air Transport

Ali E Aliev, Sahila Perananthan, John P Ferraris
Thermoacoustic performance of thin freestanding sheets of carbonized poly(acrylonitrile) and polybenzimidazole nanofibers are studied as promising candidates for thermophones. We analyze thermodynamic properties of sheets using transport parameters of single nanofibers and their aligned and randomly electrospun thin film assemblies. The electrical and thermal conductivities, thermal diffusivity, heat capacity, and infrared blackbody radiation are investigated to extract the heat exchange coefficient and enhance the energy conversion efficiency...
October 24, 2016: ACS Applied Materials & Interfaces
Hyunwoo Bark, Jeongmin Lee, Ho Sun Lim, Hye Young Koo, Wonmok Lee, Hyunjung Lee
We report a simple method for preparing highly efficient thermoelectric materials through the fabrication of nitrogen-doped reduced graphene oxide(GO) with a porous structure. The samples were produced by thermal annealing of GO/ nitrogen-rich polystyrene (N-PS) particle composite films using a colloidal templating method. N-PS particles were served as a nitrogen dopant source for the nitrogen-doped thermally reduced graphene oxide (TrGO) as well as sacrificial particles for the porous structure. The S values of the porous TrGO films were negative, indicating that the samples were transformed into n-type materials...
October 24, 2016: ACS Applied Materials & Interfaces
Baohua Wang, Tao Chen
An unprecedentedly stable CH3NH3PbI3 film synthesized by a modified chemical vapor transport method is demonstrated. The results show that the crystal structure, light absorption, and device efficiency do not degrade after storing for 100 d in air with 40% relative humidity, while the conventional solution-processed perovskites are usually stable for less than 20 d in similar conditions.
February 2016: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
E C Economou, S Marinelli, M C Smith, A A Routt, V V Kravets, H W Chu, K Spendier, Z J Celinski
Superparamagnetic iron oxide (Fe3O4) and highly anisotropic barium hexaferrite (BaFe12O19) nanoparticles were coated with an anti-inflammatory drug and magnetically transported through mucus produced by primary human airway epithelial cells. Using wet planetary ball milling, dl-2-amino-3-phosphonopropionic acid-coated BaFe12O19 nano-particles (BaNPs) of 1-100 nm in diameter were prepared in water. BaNPs and conventional 20-30-nm Fe3O4 nanoparticles (FeNPs) were then encased in a polymer (PLGA) loaded with dexamethasone (Dex) and tagged for imaging...
September 2016: BioNanoScience
María Benlloch-González, José Manuel Quintero, María Paz Suárez, Rosa Sánchez-Lucas, Ricardo Fernández-Escobar, Manuel Benlloch
There is little information about the prolonged effect of a moderately high temperature on the growth of olive (Olea europaea L.). It has been suggested that when the temperature of the air rises above 35°C the shoot growth of olive is inhibited while there is any reference on how growth is affected when the soil is warmed. In order to examine these effects, mist-cuttings and young plants generated from seeds were grown under moderate high temperature (37°C) for 64 and 42days respectively. In our study, plant dry matter accumulation was reduced when the temperature of both the air and the root medium was moderately high...
October 6, 2016: Journal of Plant Physiology
Shady A Rehim, Stephanie DeMoor, Richard Olmsted, Daniel L Dent, Jessica Parker-Raley
BACKGROUND: Hospital action teams comprise interdisciplinary health care providers working simultaneously to treat critically ill patients. Assessments designed to evaluate communication effectiveness or "nontechnical" performance of these teams are essential to minimize medical errors and improve team productivity. Although multiple communication tools are available, the characteristics and psychometric validity of these instruments have yet to be systematically compared. OBJECTIVE: To identify assessments used to evaluate the communication or "nontechnical" performance of hospital action teams and summarize evidence to develop and validate these instruments...
October 19, 2016: Journal of Surgical Education
Yong-Jun Ye, Xin-Tao Dai, De-Xin Ding, Ya-Li Zhao
In this study, a one-dimensional steady-state mathematical model of radon transport in fragmented uranium ore was established according to Fick's law and radon transfer theory in an air-water interface. The model was utilized to obtain an analytical solution for radon concentration in the air-water, two-phase system under steady state conditions, as well as a corresponding radon exhalation rate calculation formula. We also designed a one-dimensional experimental apparatus for simulating radon diffusion migration in the uranium ore with various water levels to verify the mathematical model...
October 19, 2016: Journal of Environmental Radioactivity
Laura Coco, Craig A Champlin, Robert H Eikelboom
Purpose: Sections of the community face barriers to accessing audiology services. The aim of this study was to assess the barriers faced by people in typically underserved community settings and to provide audiology services in their natural environment. Information gathered by questionnaire was used to determine each site's candidacy as a potential tele-audiology site. Method: Sixty-three participants were recruited across 3 community sites that were identified as gathering places for individuals who experience barriers to accessing traditional clinical audiology services...
October 1, 2016: American Journal of Audiology
John L Semple, G W Kent Moore, Petros Koutrakis, Jack M Wolfson, Paolo Cristofanelli, Paolo Bonasoni
: Semple, John L., G.W. Kent Moore, Petros Koutrakis, Jack M. Wolfson, Paolo Cristofanelli, and Paolo Bonasoni. High concentrations of ozone air pollution on Mount Everest: health implications for Sherpa communities and mountaineers. High Alt Med Biol. 00:000-000, 2016.-Introduction: Populations in remote mountain regions are increasingly vulnerable to multiple climate mechanisms that influence levels of air pollution. Few studies have reported on climate-sensitive health outcomes unique to high altitude ecosystems...
October 20, 2016: High Altitude Medicine & Biology
Andrés Núñez, Guillermo Amo de Paz, Alberto Rastrojo, Ana M García, Antonio Alcamí, A Montserrat Gutiérrez-Bustillo, Diego A Moreno
The first part of this review ("Monitoring of airborne biological particles in outdoor atmosphere. Part 1: Importance, variability and ratios") describes the current knowledge on the major biological particles present in the air regarding their global distribution, concentrations, ratios and influence of meteorological factors in an attempt to provide a framework for monitoring their biodiversity and variability in such a singular environment as the atmosphere. Viruses, bacteria, fungi, pollen and fragments thereof are the most abundant microscopic biological particles in the air outdoors...
March 2016: International Microbiology: the Official Journal of the Spanish Society for Microbiology
Ashish Dubey, Nirmal Adhikari, Swaminathan Venkatesan, Shaopeng Gu, Devendra Khatiwada, Qi Wang, Lal Mohammad, Mukesh Kumar, Qiquan Qiao
This data in brief includes forward and reverse scanned current density-voltage (J-V) characteristics of perovskite solar cells with PDPP3T and spiro-OMeTAD as HTL, stability testing conditions of perovskite solar cell shelf life in air for both PDPP3T and spiro-OMeTAD as HTL as per the description in Ref. [1], and individual J-V performance parameters acquired with increasing time exposed in ambient air are shown for both type of devices using PDPP3T and spiro-OMeTAD as HTL. The data collected in this study compares the device stability with time for both PDPP3T and spiro-OMeTAD based perovskite solar cells and is directly related to our research article "solution processed pristine PDPP3T polymer as hole transport layer for efficient perovskite solar cells with slower degradation" [2]...
June 2016: Data in Brief
Thiago Hérick Sá, Ana Clara Duran, Marko Tainio, Carlos Augusto Monteiro, James Woodcock
The purpose of the study was to describe cyclists and cycling trips, and to explore correlates, time trends and health consequences of cycling in São Paulo, Brazil from 1997 to 2012. Cross-sectional analysis using repeated São Paulo Household Travel Surveys (HTS). At all time periods cycling was a minority travel mode in São Paulo (1174 people with cycling trips out of 214,719 people). Poisson regressions for individual correlates were estimated using the entire 2012 HTS sample. Men were six times more likely to cycle than women...
December 2016: Preventive Medicine Reports
Shailaja Tetali, P Edwards, G V S Murthy I Roberts
BACKGROUND: Millions of children travel to school every day in India, yet little is known about this journey. We examined the distribution and determinants of school travel in Hyderabad, India. METHODS: We conducted a cross-sectional survey using a two-stage stratified cluster sampling design. School travel questionnaires were used to collect data from children aged 11-14 years, attending private, semi-private and government funded schools in Hyderabad. We used Google Earth to estimate the distance from home to school for each child and modelled the relationship between distance to school and mode of travel, adjusting for confounders...
October 19, 2016: BMC Public Health
Peter L Jernigan, Matthew C Wallace, Christine S Novak, Travis W Gerlach, Dennis J Hanseman, Timothy A Pritts, Bradley R Davis
BACKGROUND: Critical Care Air Transport Teams (CCATTs) are integral to the U.S. Air Force aeromedical evacuation paradigm. The current study was conducted to evaluate predictors of nontechnical skills (NOTECHS) in CCATT trainees. METHODS: Sixteen CCATTs were studied over a 6-month period. Team members completed a biographical survey and teams were videotaped during a simulated CCATT mission. Teams and individuals were assigned a "red flag score" using a validated assessment tool for NOTECHS...
October 2016: Military Medicine
Wei-Jie Guan, Xue-Yan Zheng, Kian Fan Chung, Nan-Shan Zhong
In China, where air pollution has become a major threat to public health, public awareness of the detrimental effects of air pollution on respiratory health is increasing-particularly in relation to haze days. Air pollutant emission levels in China remain substantially higher than are those in developed countries. Moreover, industry, traffic, and household biomass combustion have become major sources of air pollutant emissions, with substantial spatial and temporal variations. In this Review, we focus on the major constituents of air pollutants and their impacts on chronic respiratory diseases...
October 15, 2016: Lancet
Zhenyi Chen, Cheng Liu, Wenqing Liu, Tianshu Zhang, Jin Xu
Despite extensive efforts into the characterization of air pollution during the past decade, concurrent real-time characterization of aerosol and NO2 as well as satellite observation above the urban canopy in the megacity of Beijing has sparsely been performed to date. We conducted a simultaneous real-time measurement of aerosol and NO2 in urban Beijing in a pollution episode from November 25, 2015 to December 2, 2015. The aerosol extinction coefficient was measured by a 532 Mie lidar and the NO2 concentration by a Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS)...
October 14, 2016: Science of the Total Environment
F Freund, S C Williams, R D Johnson, R Coldea, P Gegenwart, A Jesche
Thorough mixing of the starting materials is the first step of a crystal growth procedure. This holds true for almost any standard technique, whereas the intentional separation of educts is considered to be restricted to a very limited number of cases. Here we show that single crystals of α-Li2IrO3 can be grown from separated educts in an open crucible in air. Elemental lithium and iridium are oxidized and transported over a distance of typically one centimeter. In contrast to classical vapor transport, the process is essentially isothermal and a temperature gradient of minor importance...
October 17, 2016: Scientific Reports
Richard L Blackmon, Silvia M Kreda, Patrick R Sears, Lawrence E Ostrowski, David B Hill, Brian S Chapman, Joseph B Tracy, Amy L Oldenburg
Mucus hydration (wt%) has become an increasingly useful metric in real-time assessment of respiratory health in diseases like cystic fibrosis and COPD, with higher wt% indicative of diseased states. However, available in vivo rheological techniques are lacking. Gold nanorods (GNRs) are attractive biological probes whose diffusion through tissue is sensitive to the correlation length of comprising biopolymers. Through employment of dynamic light scattering theory on OCT signals from GNRs, we find that weakly-constrained GNR diffusion predictably decreases with increasing wt% (more disease-like) mucus...
2016: Proceedings of SPIE
E Keita, T E Kodger, P Faure, S Rodts, D A Weitz, P Coussot
Polymers suspended in granular packings have a significant impact on water retention, which is important for soil irrigation and the curing of building materials. Whereas the drying rate remains constant during a long period for pure water due to capillary flow providing liquid water to the evaporating surface, we show that it is not the case for a suspension made of soft polymeric particles called microgels: The drying rate decreases immediately and significantly. By measuring the spatial water saturation and concentration of suspended particles with magnetic resonance imaging, we can explain these original trends and model the process...
September 2016: Physical Review. E
Tia Renouf, Megan Pollard
Rural and remote places like Sable Island (Nova Scotia) or François (Newfoundland) pose a challenge in delivering both health care and appropriate education that today's learners need to practice in a rural setting. This education can be difficult to deliver to students far from academic centers. This is especially true for learners and practitioners at offshore locations like ships, oil installations, or in the air when patients are transported via fixed wing aircraft or helicopter. The following editorial provides a snapshot of the setting and the challenges faced while working as a physician on a ship, in remote regions...
September 9, 2016: Curēus
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"