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https://www.readbyqxmd.com/read/28103093/why-aviation-safety-is-not-a-good-model-for-healthcare-safety
#1
Pat Baird, Erin Sparnon
No abstract text is available yet for this article.
January 2017: Biomedical Instrumentation & Technology
https://www.readbyqxmd.com/read/28095959/general-aviation-pilots-over-70-years-old
#2
Alpo Vuorio, Saryani Asmayawati, Bruce Budowle, Robin Griffiths, Timo Strandberg, Jaana Kuoppala, Antti Sajantila
BACKGROUND: Currently it is not unusual for general aviation pilots in the United States to continue to fly beyond the age of 70, even into their 80s and 90s. Pilots have regular examinations according to protocols which do not specify special or additional requirements for pilots over 70 yr of age. Additionally, the third class medical reforms passed by the U.S. Senate on 15 July 2016 could potentially result in even less stringent medical certification requirements for general aviation pilots...
February 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28095957/point-of-care-ultrasound-utility-and-potential-for-high-altitude-crew-recovery-missions
#3
Laura A Galdamez, Jonathan B Clark, Erik L Antonsen
INTRODUCTION: Flights to high altitude can lead to exposure and unique pathology not seen in normal commercial aviation. METHODS: This paper assesses the potential for point-of-care ultrasound to aid in management and disposition of injured crewmembers from a high altitude incident. This was accomplished through a systematic literature review regarding current diagnostic and therapeutic uses of ultrasound for injuries expected in high altitude free fall and parachuting...
February 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28095953/reported-back-pain-in-army-aircrew-in-relation-to-airframe-gender-age-and-experience
#4
Amanda M Kelley, Jason MacDonnell, Deahndra Grigley, John Campbell, Steven J Gaydos
INTRODUCTION: Back pain has remained an issue of significance among aircraft crewmembers for decades, occurring in the majority of military helicopter pilots with potential deleterious effects on performance, safety, and operational readiness. This exploratory, correlational survey study was designed to evaluate the presence of patterns and relationships that may require further examination to understand causal factors. METHODS: The study population consisted of U...
February 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28095603/review-of-regulatory-emphasis-on-transportation-safety-in-the-united-states-2002-2009-public-versus-private-modes
#5
Garrett C Waycaster, Taiki Matsumura, Volodymyr Bilotkach, Raphael T Haftka, Nam H Kim
The U.S. Department of Transportation is responsible for implementing new safety improvements and regulations with the goal of ensuring limited funds are distributed to where they can have the greatest impact on safety. In this work, we conduct a study of new regulations and other reactions (such as recalls) to fatal accidents in several different modes of transportation implemented from 2002 to 2009. We find that in the safest modes of commercial aviation and bus transport, the amount of spending on new regulations is high in relation to the number of fatalities compared to the regulatory attention received by less safe modes of general aviation and private automobiles...
January 17, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28088866/a-combined-experimental-and-computational-study-on-the-unimolecular-decomposition-of-jp-8-jet-fuel-surrogates-ii-n-dodecane-n-c12h26
#6
Long Zhao, Tao Yang, Ralf I Kaiser, Tyler Patrick Troy, Musahid Ahmed, Joao Marcelo Ribeiro, Daniel Belisario-Lara, Alexander Moiseevich Mebel
We investigated temperature-dependent products in the pyrolysis of helium-seeded n-dodecane, which represents a surrogate of the n-alkane fraction of Jet Propellant-8 (JP-8) aviation fuel. The experiments were performed in a high temperature chemical reactor over a temperature range of 1,200 K to 1,600 K at a pressure of 600 Torr, with in situ identification of the nascent products in a supersonic molecular beam using single photon vacuum ultraviolet (VUV) photoionization coupled with the analysis of the ions in a reflectron time-of-flight mass spectrometer (ReTOF)...
January 16, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28079216/one-step-hydroprocessing-of-fatty-acids-into-renewable-aromatic-hydrocarbons-over-ni-hzsm-5-insights-into-the-major-reaction-pathways
#7
Shiyou Xing, Pengmei Lv, Jiayan Wang, Junying Fu, Pei Fan, Lingmei Yang, Gaixiu Yang, Zhenhong Yuan, Yong Chen
For high caloricity and stability in bio-aviation fuels, a certain content of aromatic hydrocarbons (AHCs, 8-25 wt%) is crucial. Fatty acids, obtained from waste or inedible oils, are a renewable and economic feedstock for AHC production. Considerable amounts of AHCs, up to 64.61 wt%, were produced through the one-step hydroprocessing of fatty acids over Ni/HZSM-5 catalysts. Hydrogenation, hydrocracking, and aromatization constituted the principal AHC formation processes. At a lower temperature, fatty acids were first hydrosaturated and then hydrodeoxygenated at metal sites to form long-chain hydrocarbons...
January 12, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28074016/cari-7a-development-and-validation
#8
Kyle Copeland
Aircrew members can be exposed to higher annual doses of natural ionizing radiation than members of the general population in most parts of the world. The principal ionizing radiation to which they are exposed is galactic cosmic radiation (GCR). Among the particles present in the primary spectrum are heavy ions: relativistic nuclei of lithium and heavier elements. These ions have very high radiation weighting factors and can contribute significantly to the effective dose at altitudes above the Pfotzer maximum...
January 10, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/28068773/truncated-conjugate-gradient-an-optimal-strategy-for-the-analytical-evaluation-of-the-many-body-polarization-energy-and-forces-in-molecular-simulations
#9
Félix Aviat, Antoine Levitt, Benjamin Stamm, Yvon Maday, Pengyu Ren, Jay W Ponder, Louis Lagardère, Jean-Philip Piquemal
We introduce a new class of methods, denoted as Truncated Conjugate Gradient(TCG), to solve the many-body polarization energy and its associated forces in molecular simulations (i.e. molecular dynamics (MD) and Monte Carlo). The method consists in a fixed number of Conjugate Gradient (CG) iterations. TCG approaches provide a scalable solution to the polarization problem at a user-chosen cost and a corresponding optimal accuracy. The optimality of the CG-method guarantees that the number of the required matrix-vector products are reduced to a minimum compared to other iterative methods...
January 10, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28061925/hypoxia-occurrence-in-a-military-aviator-below-3048-m
#10
Lesli R Tristan
INTRODUCTION: Despite technological advances, hypoxia remains a concern in aviation. Hypoxia can present with a vast array of symptoms that are unique to each aviator. Military aviators undergo hypoxia awareness trainings to learn their unique constellation of hypoxia symptoms. CASE REPORT: This case report describes a military aviator who was flying in a B1 when the cabin depressurized. While performing the emergency checklist, the aviator was moving about the cabin and began to experience hypoxia symptoms...
January 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28061924/asymptomatic-wolff-parkinson-white-pattern-ecg-in-usaf-aviators
#11
Eddie D Davenport, Karen A N Rupp, Edwin Palileo, Jared Haynes
INTRODUCTION: Wolff-Parkinson-White (WPW) pattern is occasionally found in asymptomatic aviators during routine ECGs. Aeromedical concerns regarding WPW pattern include risk of dysrhythmia or sudden cardiac death (SCD), thus affecting the safety of flight. The purpose of this study was to determine the prevalence and outcomes of aviators with asymptomatic WPW pattern and assess for risk factors that contribute to progression to dysrhythmia or symptoms. METHODS: The U...
January 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28061921/bipolar-disorder-in-aviation-medicine
#12
Alpo Vuorio, Tanja Laukkala, Pooshan Navathe, Bruce Budowle, Robert Bor, Antti Sajantila
BACKGROUND: One of the most difficult challenges in aviation medicine is to diagnose, as early as possible, pilots with psychiatric disorders that may impair pilot performance and increase the risk of incidents and accidents. This diagnosis applies particularly to bipolar disorder (BD), where return to flying duty is not an option in the majority of cases. BD is a long-term mental disorder presenting remittent depressive, hypomanic, manic, or mixed episodes between low symptomatic or asymptomatic intermediate periods...
January 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28061920/the-u-s-experience-with-waivers-for-insulin-treated-pilots
#13
William D Mills, Charles A DeJohn, Mustafa Alaziz
INTRODUCTION: This study explores the U.S. experience with waivers for insulin treatment for third-class medical certificates. From 1997 through 2014, the Federal Aviation Administration (FAA) approved an estimated 1500 waivers for insulin-treated diabetes with a total of 450 active waivers as of December 31, 2014. These pilots were involved in 25 accidents, but none were attributed to medical issues. METHODS: Data for the insulin waiver group and control group were obtained from the FAA's aeromedical certification system and matching accident data from the NTSB database...
January 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28061919/myasthenia-gravis-and-its-aeromedical-implications
#14
Tania Jagathesan, Michael D O'Brien
BACKGROUND: Myasthenia gravis is an autoimmune condition where antibodies form against the acetylcholine receptors at the neuromuscular junction, eventually causing damage to the motor end plate. The clinical features include muscle fatigability as well as ocular, bulbar, and limb weakness, which can have implications on the role of a pilot or air traffic controller. This retrospective study reviewed the United Kingdom Civil Aviation Authority (UK CAA) experience of myasthenia gravis...
January 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28036036/a-fully-transparent-flexible-sensor-for-cryogenic-temperatures-based-on-high-strength-metallurgical-graphene
#15
Ryszard Pawlak, Marcin Lebioda, Jacek Rymaszewski, Witold Szymanski, Lukasz Kolodziejczyk, Piotr Kula
Low-temperature electronics operating in below zero temperatures or even below the lower limit of the common -65 to 125 °C temperature range are essential in medical diagnostics, in space exploration and aviation, in processing and storage of food and mainly in scientific research, like superconducting materials engineering and their applications-superconducting magnets, superconducting energy storage, and magnetic levitation systems. Such electronic devices demand special approach to the materials used in passive elements and sensors...
December 28, 2016: Sensors
https://www.readbyqxmd.com/read/28035975/a-measurement-method-for-large-parts-combining-with-feature-compression-extraction-and-directed-edge-point-criterion
#16
Wei Liu, Yang Zhang, Fan Yang, Peng Gao, Zhiguang Lan, Zhenyuan Jia, Hang Gao
High-accuracy surface measurement of large aviation parts is a significant guarantee of aircraft assembly with high quality. The result of boundary measurement is a significant parameter for aviation-part measurement. This paper proposes a measurement method for accurately measuring the surface and boundary of aviation part with feature compression extraction and directed edge-point criterion. To improve the measurement accuracy of both the surface and boundary of large parts, extraction method of global boundary and feature analysis of local stripe are combined...
December 26, 2016: Sensors
https://www.readbyqxmd.com/read/28019067/dental-students-ability-to-locate-emergency-equipment-lessons-learned-from-aviation
#17
H M Pinsky, J M Le, D G Sweier, K Marti
PURPOSE: The purpose of this study was to evaluate the dental student's ability to locate medical emergency equipment/items at the University of Michigan School of Dentistry clinic. METHODS: A total of 138 second-year dental students (traditional group) participated in this study as part of a simulation-based medical emergencies rotation course held during the winter term of 2014 and 2015. Without prior training, students were tested on their ability to locate nine predetermined items on the clinic floor using a self-reported checklist...
December 25, 2016: European Journal of Dental Education: Official Journal of the Association for Dental Education in Europe
https://www.readbyqxmd.com/read/27994084/ernsting-s-aviation-and-space-medicine
#18
Lachlan Mackay Brown
No abstract text is available yet for this article.
December 2016: Occupational Medicine
https://www.readbyqxmd.com/read/27993190/investigation-on-contribution-of-neutron-monitor-data-to-estimation-of-aviation-doses
#19
M Kákona, O Ploc, D Kyselová, J Kubančák, R Langer, K Kudela
Recently, many efforts have appeared to routinely measure radiation exposure (RE) of aircraft crew due to cosmic rays (CR). On the other hand real-time CR data measured with the ground based neutron monitors (NMs) are collected worldwide and available online. This is an opportunity for comparison of long-term observations of RE at altitudes of about 10km, where composition and energy spectra of secondary particles differ from those on the ground, with the data from NMs. Our contribution presents examples of such type of comparison...
November 2016: Life Sciences in Space Research
https://www.readbyqxmd.com/read/27989241/oak-in-hospitals-the-worst-enemy-of-staphylococcus-aureus
#20
Hélène Pailhoriès, Muhammad Tanveer Munir, Florence Aviat, Michel Federighi, Christophe Belloncle, Matthieu Eveillard
No abstract text is available yet for this article.
December 19, 2016: Infection Control and Hospital Epidemiology
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