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https://www.readbyqxmd.com/read/27907237/tricyclic-antidepressants-found-in-pilots-fatally-injured-in-civil-aviation-accidents
#1
Zeki Dulkadir, Arvind K Chaturvedi, Kristi J Craft, Jeffery S Hickerson, Kacey D Cliburn
Prevalence of tricyclic antidepressants (TCAs) has not been explored in pilots. The National Transportation Safety Board (NTSB) aviation accident and the Federal Aviation Administration's Civil Aerospace Medical Institute (CAMI) toxicology and medical certification databases were searched for pilots fatally injured in aviation accidents. During 1990-2012, CAMI received bio-samples of pilots from 7037 aviation accidents. Of these, 2644 cases were positive for drugs. TCAs were present in 31. TCA blood concentrations ranged from therapeutic to toxic levels...
December 1, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27898553/the-aeromedical-physician-assistant
#2
Joshua Radi, Michael Brisson, Michael Line
The US Army aeromedical physician assistant (PA) serves aviation units in regards to crewmember medical readiness. All PAs are graduates of a 6-week flight surgeon course. They are responsible for conducting nearly 40% of the annual US Army flight physicals. This unique training and deployment illustrates the growing adaptability of PAs to assume a greater role in military medicine.
December 2016: JAAPA: Official Journal of the American Academy of Physician Assistants
https://www.readbyqxmd.com/read/27886995/cosmic-radiation-exposure-of-future-hypersonic-flight-missions
#3
L Koops
Cosmic radiation exposure in air traffic grows with flight altitude, geographical latitude and flight time. For future high-speed intercontinental point-to-point travel, the trade-off between reduced flight time and enhanced dose rate at higher flight altitudes is investigated. Various representative (partly) hypersonic cruise missions are considered and in dependence on solar activity the integral route dose is calculated for envisaged flight profiles and trajectories. Our results are compared to those for corresponding air connections served by present day subsonic airliners...
November 24, 2016: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/27871096/responses-and-injuries-to-pmhs-in-side-facing-and-oblique-seats-in-horizontal-longitudinal-sled-tests-per-faa-emergency-landing-conditions
#4
John R Humm, Narayan Yoganandan, Frank A Pintar, Richard L DeWeese, David M Moorcroft, Amanda M Taylor, Brian Peterson
The objective of the present exploratory study is to understand occupant responses in oblique and side-facing seats in the aviation environment, which are increasingly installed in modern aircrafts. Sled tests were conducted using intact Post Mortem Human Surrogates (PMHS) seated in custom seats approximating standard aircraft geometry. End conditions were selected to represent candidate aviation seat and restraint configurations. Three-dimensional head center-of-gravity linear accelerations, head angular velocities, and linear accelerations of the T1, T6, and T12 spinous processes, and sacrum were obtained...
November 2016: Stapp Car Crash Journal
https://www.readbyqxmd.com/read/27857327/airborne-forward-pointing-uv-rayleigh-lidar-for-remote-clear-air-turbulence-detection-system-design-and-performance
#5
Patrick Vrancken, Martin Wirth, Gerhard Ehret, Hervé Barny, Philippe Rondeau, Henk Veerman
A high-performance airborne UV Rayleigh lidar system was developed within the European project DELICAT. With its forward-pointing architecture, it aims at demonstrating a novel detection scheme for clear air turbulence (CAT) for an aeronautics safety application. Due to its occurrence in clear and clean air at high altitudes (aviation cruise flight level), this type of turbulence evades microwave radar techniques and in most cases coherent Doppler lidar techniques. The present lidar detection technique relies on air density fluctuation measurement and is thus independent of backscatter from hydrometeors and aerosol particles...
November 10, 2016: Applied Optics
https://www.readbyqxmd.com/read/27847484/an-integrative-framework-of-stress-attention-and-visuomotor-performance
#6
REVIEW
Samuel J Vine, Lee J Moore, Mark R Wilson
The aim of this article is to present an integrative conceptual framework that depicts the effect of acute stress on the performance of visually guided motor skills. We draw upon seminal theories highlighting the importance of subjective interpretations of stress on subsequent performance and outline how models of disrupted attentional control might explain this effect through impairments in visuomotor control. We first synthesize and critically discuss empirical support for theories examining these relationships in isolation...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27846239/high-throughput-accurate-single-cell-screening-of-euglena-gracilis-with-fluorescence-assisted-optofluidic-time-stretch-microscopy
#7
Baoshan Guo, Cheng Lei, Takuro Ito, Yiyue Jiang, Yasuyuki Ozeki, Keisuke Goda
The development of reliable, sustainable, and economical sources of alternative fuels is an important, but challenging goal for the world. As an alternative to liquid fossil fuels, algal biofuel is expected to play a key role in alleviating global warming since algae absorb atmospheric CO2 via photosynthesis. Among various algae for fuel production, Euglena gracilis is an attractive microalgal species as it is known to produce wax ester (good for biodiesel and aviation fuel) within lipid droplets. To date, while there exist many techniques for inducing microalgal cells to produce and accumulate lipid with high efficiency, few analytical methods are available for characterizing a population of such lipid-accumulated microalgae including E...
2016: PloS One
https://www.readbyqxmd.com/read/27832557/bow-tie-diagrams-for-risk-management-in-anaesthesia
#8
M D Culwick, A F Merry, D M Clarke, K J Taraporewalla, N M Gibbs
Bow-tie analysis is a risk analysis and management tool that has been readily adopted into routine practice in many high reliability industries such as engineering, aviation and emergency services. However, it has received little exposure so far in healthcare. Nevertheless, its simplicity, versatility, and pictorial display may have benefits for the analysis of a range of healthcare risks, including complex and multiple risks and their interactions. Bow-tie diagrams are a combination of a fault tree and an event tree, which when combined take the shape of a bow tie...
November 2016: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/27830768/modeling-volcanic-eruption-parameters-by-near-source-internal-gravity-waves
#9
M Ripepe, G Barfucci, S De Angelis, D Delle Donne, G Lacanna, E Marchetti
Volcanic explosions release large amounts of hot gas and ash into the atmosphere to form plumes rising several kilometers above eruptive vents, which can pose serious risk on human health and aviation also at several thousands of kilometers from the volcanic source. However the most sophisticate atmospheric models and eruptive plume dynamics require input parameters such as duration of the ejection phase and total mass erupted to constrain the quantity of ash dispersed in the atmosphere and to efficiently evaluate the related hazard...
November 10, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27828136/potential-capabilities-of-aircraft-laser-landing-systems
#10
G A Kaloshin, G G Matvienko, S A Shishkin, V I Anisimov, V V Butuzov, V V Zhukov, G V Stolyarov, V P Pasyuk
We present calculations of the efficiency of the laser landing system (LLS), based on determining the minimum required fluxes of scattered radiation from fixed extended landmarks (FELs), which are LLS indicators in the case of visual FEL detection under real operation conditions. It is shown that, when the meteorological visibility range S<sub>m</sub>=800  m, for reliable detection of laser beams from the glissade slope group at ranges L∼1.0-1.6  km under nighttime conditions, the minimum required powers are P<sub>min</sub>=0...
October 20, 2016: Applied Optics
https://www.readbyqxmd.com/read/27816011/sleep-alertness-and-alertness-management-among-commercial-airline-pilots-on-short-haul-and-long-haul-flights
#11
Mikael Sallinen, Maria Sihvola, Sampsa Puttonen, Kimmo Ketola, Antti Tuori, Mikko Härmä, Göran Kecklund, Torbjörn Åkerstedt
Airline pilots' sleep and on-duty alertness are important focus areas in commercial aviation. Until now, studies pertaining to this topic have mainly focused on specific characteristics of flights and thus a comprehensive picture of the matter is not well established. In addition, research knowledge of what airline pilots actually do to maintain their alertness while being on duty is scarce. To address these gaps in research knowledge, we conducted a field study on a representative sample of the airline pilots of a medium-sized airline...
November 2, 2016: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/27782096/gnss-spoofing-network-monitoring-based-on-differential-pseudorange
#12
Zhenjun Zhang, Xingqun Zhan
Spoofing is becoming a serious threat to various Global Navigation Satellite System (GNSS) applications, especially for those that require high reliability and security such as power grid synchronization and applications related to first responders and aviation safety. Most current works on anti-spoofing focus on spoofing detection from the individual receiver side, which identifies spoofing when it is under an attack. This paper proposes a novel spoofing network monitoring (SNM) mechanism aiming to reveal the presence of spoofing within an area...
October 23, 2016: Sensors
https://www.readbyqxmd.com/read/27779958/aeromedical-evaluation-for-an-f-16-candidate-with-incomplete-paraplegia
#13
Monica Chahal-Kummen, Trond-Eirik Strand, Jan Ove Owe, Eigil Gulliksen, Anthony S Wagstaff
BACKGROUND: A candidate with paraplegia contacted the Institute of Aviation Medicine, Oslo, requesting a medical examination and medical certification for flying back seat on an F-16 Fighting Falcon. Thorough aeromedical examinations, including specialist evaluations, were initiated for the final decision to be made. CASE REPORT: Almost 13 yr earlier the candidate had acquired spinal cord damage at neurological level L1 after falling 4 m (13 ft) from out of a window...
2016: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/27779600/lumbar-spine-paraspinal-muscle-and-intervertebral-disc-height-changes-in-astronauts-after-long-duration-spaceflight-on-the-international-space-station
#14
D G Chang, R M Healey, A J Snyder, J V Sayson, B R Macias, D G Coughlin, J F Bailey, S E Parazynski, J C Lotz, A R Hargens
STUDY DESIGN: Prospective case series. OBJECTIVE: Evaluate lumbar paraspinal muscle (PSM) cross-sectional area and intervertebral disc (IVD) height changes induced by a 6-month space mission on the International Space Station (ISS). The long-term objective of this project is to promote spine health and prevent spinal injury during space missions as well as here on Earth. SUMMARY OF BACKGROUND: NASA crewmembers have a 4.3 times higher risk of herniated IVDs, compared to the general and military aviator populations...
October 25, 2016: Spine
https://www.readbyqxmd.com/read/27778222/strategies-for-efficient-and-economical-2-3-butanediol-production-new-trends-in-this-field
#15
Aneta M Białkowska
2,3-Butanediol (2,3-BD) is a promising bulk chemical with a potentially wide range of applications e.g., in the manufacture of printing inks, perfumes, synthetic rubber, fumigants, antifreeze agents, fuel additives, foodstuffs and pharmaceuticals. Its high heating value and ability to increase the octane number of fuels make 2,3-BD a promising drop-in fuel. It can also be converted to methyl-ethyl ketone (MEK), which is considered an effective liquid fuel additive. After combination with MEK and hydrogenation reaction, 2,3-BD can be converted to octane, which is used to produce high-quality aviation fuel...
December 2016: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/27768041/the-evolution-of-silica-nanoparticle-polyester-coatings-on-surfaces-exposed-to-sunlight
#16
Vi Khanh Truong, Miljan Stefanovic, Shane Maclaughlin, Mark Tobin, Jitraporn Vongsvivut, Mohammad Al Kobaisi, Russell J Crawford, Elena P Ivanova
Corrosion of metallic surfaces is prevalent in the environment and is of great concern in many areas, including the military, transport, aviation, building and food industries, amongst others. Polyester and coatings containing both polyester and silica nanoparticles (SiO2NPs) have been widely used to protect steel substrata from corrosion. In this study, we utilized X-ray photoelectron spectroscopy, attenuated total reflection infrared micro-spectroscopy, water contact angle measurements, optical profiling and atomic force microscopy to provide an insight into how exposure to sunlight can cause changes in the micro- and nanoscale integrity of the coatings...
October 11, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27754819/wildland-fire-fighter-deaths-in-the-united-states-a-comparison-of-existing-surveillance-systems
#17
Corey Butler, Suzanne Marsh, Joseph W Domitrovich, Jim Helmkamp
BACKGROUND: Wildland fire fighting is a high-risk occupation requiring considerable physical and psychological demands. Multiple agencies publish fatality summaries for wildland fire fighters; however, the reported number and types vary. At least five different surveillance systems capture deaths, each with varying case definitions and case inclusion/exclusion criteria. Four are population-level systems and one is case-based. System differences create challenges to accurately characterize fatalities...
October 18, 2016: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/27753548/forty-years-on-from-an-event-that-changed-the-management-of-trauma-around-the-world-what-actually-happened-that-night-forty-years-ago
#18
Franklin H G Bridgewater
The management of trauma has evolved significantly over the last 40 years. Seminal to this process was the development in Nebraska of a concept of trauma management that was promulgated as Advanced Trauma Life Support (ATLS). It has achieved global support and is considered by many to be the acme in trauma management. Every participant in an ATLS course remembers that an aviation accident in rural Nebraska was responsible for the nascence of the program but very few know the details of the crash. February 17, 2016, was the 40th anniversary of the accident...
October 2016: Military Medicine
https://www.readbyqxmd.com/read/27734951/a-study-of-electrochemical-machining-of-ti-6al-4v-in-nano3-solution
#19
Hansong Li, Chuanping Gao, Guoqian Wang, Ningsong Qu, Di Zhu
The titanium alloy Ti-6Al-4V is used in many industries including aviation, automobile manufacturing, and medical equipment, because of its low density, extraordinary corrosion resistance and high specific strength. Electrochemical machining (ECM) is a non-traditional machining method that allows applications to all kinds of metallic materials in regardless of their mechanical properties. It is widely applied to the machining of Ti-6Al-4V components, which usually takes place in a multicomponent electrolyte solution...
October 13, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27723249/microbial-alkane-production-for-jet-fuel-industry-motivation-state-of-the-art-and-perspectives
#20
Lorena Jiménez-Díaz, Antonio Caballero, Natalia Pérez-Hernández, Ana Segura
Bio-jet fuel has attracted a lot of interest in recent years and has become a focus for aircraft and engine manufacturers, oil companies, governments and researchers. Given the global concern about environmental issues and the instability of oil market, bio-jet fuel has been identified as a promising way to reduce the greenhouse gas emissions from the aviation industry, while also promoting energy security. Although a number of bio-jet fuel sources have been approved for manufacture, their commercialization and entry into the market is still a far way away...
October 10, 2016: Microbial Biotechnology
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