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https://www.readbyqxmd.com/read/28887631/the-efficient-removal-of-thallium-from-sintering-flue-gas-desulfurization-wastewater-in-ferrous-metallurgy-using-emulsion-liquid-membrane
#1
Li Yang, Jiangping Xiao, Yi Shen, Xian Liu, Wensong Li, Weiyan Wang, Yunquan Yang
The removal of thallium ions in flue gas desulfurization wastewater from ferrous metallurgic industry was studied by emulsion liquid membrane (ELM) method using 2-ethylhexyl phosphoric acid-2-ethylhexyl ester (P507) as carrier, aviation kerosene (AK) as organic solvent, polyisobutylene succinimide (T154) as surfactant, polyisobutylene (PIB) as additive, and sulfuric acid as internal reagent. Some important influence parameters such as concentrations of carrier, surfactant and stripping agent, agitation speed, extraction time, volume ratios of feed solution to emulsion phase and internal phase to membrane phase, and their effects on the removal efficiency of Tl in the ELM process were investigated and optimized...
September 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28884322/assessment-of-sleepiness-fatigue-and-depression-among-gulf-cooperation-council-commercial-airline-pilots
#2
Tareq M Aljurf, Awad H Olaish, Ahmed S BaHammam
PURPOSE: No studies have assessed the prevalence of fatigue, depression, sleepiness, and the risk of obstructive sleep apnea (OSA) among commercial airlines pilots in the Gulf Cooperation Council (GCC). METHODS: This was a quantitative cross-sectional study conducted among pilots who were on active duty and had flown during the past 6 months for one of three commercial airline companies. We included participants with age between 20 and 65 years. Data were collected using a predesigned electronic questionnaire composed of questions related to demographic information in addition to the Fatigue Severity Scale (FSS), the Berlin Questionnaire, the Epworth Sleepiness Scale (ESS), and the Hospital Anxiety and Depression Scale (HADS)...
September 7, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28883024/hearing-threshold-shifts-among-military-pilots-of-the-israeli-air-force
#3
Liyona Kampel-Furman, Z Joachims, H Bar-Cohen, A Grossman, Y Frenkel-Nir, Y Shapira, E Alon, E Carmon, B Gordon
BACKGROUND: Military aviators are potentially at risk for developing noise-induced hearing loss. Whether ambient aircraft noise exposure causes hearing deficit beyond the changes attributed to natural ageing is debated. The aim of this research was to assess changes in hearing thresholds of Israeli Air Force (IAF) pilots over 20 years of military service and identify potential risk factors for hearing loss. METHODS: A retrospective cohort analysis was conducted of pure-tone air conduction audiograms of pilots, from their recruitment at 18 years of age until the last documented medical check-up...
September 6, 2017: Journal of the Royal Army Medical Corps
https://www.readbyqxmd.com/read/28860881/aviation-s-normal-operations-safety-audit-a-safety-management-and-educational-tool-for-health-care-results-of-a-small-scale-trial
#4
Simon A Bennett
BACKGROUND: A National Health Service (NHS) contingent liability for medical error claims of over £26 billion. OBJECTIVES: To evaluate the safety management and educational benefits of adapting aviation's Normal Operations Safety Audit (NOSA) to health care. METHODS: In vivo research, a NOSA was performed by medical students at an English NHS Trust. After receiving training from the author, the students spent 6 days gathering data under his supervision...
2017: Risk Management and Healthcare Policy
https://www.readbyqxmd.com/read/28860844/cognitive-effects-of-electro-acupuncture-and-pregabalin-in-a-trigeminal-neuralgia-rat-model-induced-by-cobra-venom
#5
Ruo-Wen Chen, Hui Liu, Jian-Xiong An, Xiao-Yan Qian, Yi-De Jiang, Doris K Cope, John P Williams, Rui Zhang, Li-Na Sun
OBJECTIVE: The objective of this study was to investigate the effects of electro-acupuncture (EA) and pregabalin on cognition impairment induced by chronic trigeminal neuralgia (TN) in rats. DESIGN: Controlled animal study. SETTING: Department of Anesthesiology, Pain Medicine and Critical Care Medicine, Aviation General Hospital of China Medical University. SUBJECTS: Forty adult male Sprague Dawley rats. METHODS: Rats were randomly divided into four groups...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28842157/a-uk-civil-aviation-authority-protocol-to-allow-pilots-with-insulin-treated-diabetes-to-fly-commercial-aircraft
#6
Stuart J Mitchell, Julia Hine, Jill Vening, Joanne Montague, Sally Evans, Ken M Shaw, Brian M Frier, Simon R Heller, David L Russell-Jones
No abstract text is available yet for this article.
September 2017: Lancet Diabetes & Endocrinology
https://www.readbyqxmd.com/read/28830124/postmortem-fluid-and-tissue-concentrations-of-thc-11-oh-thc-and-thc-cooh
#7
Sunday R Saenz, Russell J Lewis, Mike K Angier, Jarrad R Wagner
Marijuana is the most commonly abused illicit drug worldwide. Marijuana is used for its euphoric and relaxing properties. However, marijuana use has been shown to result in impaired memory, cognitive skills and psychomotor function. The Federal Aviation Administration's Civil Aerospace Medical Institute conducts toxicological analysis on aviation fatalities. Due to severe trauma associated with aviation accidents, blood is not always available; therefore, the laboratory must rely on specimens other than blood for toxicological analysis in ~30-40% of cases...
July 1, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28818330/manufacturing-in-the-eye-of-the-storm-shen-hong-and-the-nine-great-installations-project-during-china-s-cultural-revolution
#8
Lie Sun, Danian Hu
The construction of nine high-end technical installations (hereafter Project NGI, for Nine Great Installations or ) in the 1960s and 1970s was an indispensable part of the development of China's defense and heavy industries. The project put more than 1400 machines into operation or trial operation during the Culture Revolution (1966-1976), and they served essential technical functions in sectors such as aviation, aerospace, machinery, metallurgy, and electronics, and directly advancing the development of these fields...
August 14, 2017: Endeavour
https://www.readbyqxmd.com/read/28818147/attention-deficit-hyperactivity-disorder-and-fatal-accidents-in-aviation-medicine
#9
Tanja Laukkala, Robert Bor, Bruce Budowle, Antti Sajantila, Pooshan Navathe, Markku Sainio, Alpo Vuorio
BACKGROUND: Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder with symptoms of inattention and/or hyperactivity-impulsivity that interfere with functioning and/or development. ADHD occurs in about 2.5% of adults. ADHD can be an excluding medical condition among pilots due to the risk of attentional degradation and therefore impact on flight safety. Diagnosis of ADHD is complex, which complicates aeromedical assessment. This study highlights fatal accident cases among pilots with ADHD and discusses protocols to detect its presence to help to assess its importance to flight safety...
September 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28818146/metabolic-syndrome-and-cardio-cerebrovascular-risk-disparities-between-pilots-and-aircraft-mechanics
#10
Myeong-Bo Kim, Hyun-Jin Kim, Soo-Hyeon Kim, Suk-Ho Lee, Se-Ho Lee, Won-Ju Park
INTRODUCTION: In the Republic of Korea Air Force, the health of pilots is strictly supervised, but there is comparatively not enough interest in aircraft mechanics' health. Among mechanics, who are heavily involved in military aircraft maintenance, the occurrence of sudden cardio-cerebrovascular diseases (CCVDs) is a possible risk factor during the maintenance process, which should be performed perfectly. METHODS: We performed health examinations on 2123 male aircraft pilots and 1271 aircraft mechanics over 30 yr of age and determined the prevalence of metabolic syndrome (MetS), an important risk factor for CCVDs...
September 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28806612/pilots-using-selective-serotonin-reuptake-inhibitors-compared-to-other-fatally-injured-pilots
#11
Paul Rogers, Christy Hileman, Guillermo Salazar, Kacey Cliburn, Lawrence Paskoff, William Hathaway, Kevin Gildea, Victor Hugo Tejera Villalaz
Selective Serotonin Reuptake Inhibitors (SSRI) were a disqualifying medication for U.S. civil pilots before April 5, 2010. After this date, a Federal Aviation Administration policy was created that allowed airmen, on select SSRIs, a pathway to hold a valid medical certificate. The purpose of this study was to provide a detailed look at SSRIs in the U.S. pilot population since the inception of this new policy. We examined the toxicology results from fatally injured airmen in addition to outcomes concerning pilots who are participating in the program...
August 11, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28802440/debiasing-visual-pilots-weather-related-decision-making
#12
Stephen Walmsley, Andrew Gilbey
Pilots who decide to continue a flight into deteriorating weather conditions, rather than turn back or divert, are a significant cause of fatal crashes in general aviation. Earlier research has suggested that cognitive biases such as the anchoring effect and confirmation bias are implicated in many decisions to continue into worsening weather. In this study, we explored whether a simple debiasing technique, 'considering the alternative', reduced the effect of these two potentially fatal biases. Despite the study being adequately powered, our attempts to reduce the effects of biases were both unsuccessful...
November 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28796973/the-role-of-social-cue-utilization-and-closing-the-loop-communication-in-the-performance-of-ad-hoc-dyads
#13
Daniel J Yee, Mark W Wiggins, Ben J Searle
OBJECTIVE: To examine whether social cue utilization impacts the performance of ad hoc dyads through its relationship with closing the loop, a communication process whereby team members respond more frequently to initiating statements made by others. BACKGROUND: There lacks unequivocal experimental evidence for any single cognitive-based process that might predict the performance of ad hoc teams. METHOD: Using a quasi-experimental design, 80 participants were classified into 40 dyads based on their levels of social cue utilization and attempted a team problem-solving task...
September 2017: Human Factors
https://www.readbyqxmd.com/read/28792487/multiaxial-fatigue-damage-parameter-and-life-prediction-without-any-additional-material-constants
#14
Zheng-Yong Yu, Shun-Peng Zhu, Qiang Liu, Yunhan Liu
Based on the critical plane approach, a simple and efficient multiaxial fatigue damage parameter with no additional material constants is proposed for life prediction under uniaxial/multiaxial proportional and/or non-proportional loadings for titanium alloy TC4 and nickel-based superalloy GH4169. Moreover, two modified Ince-Glinka fatigue damage parameters are put forward and evaluated under different load paths. Results show that the generalized strain amplitude model provides less accurate life predictions in the high cycle life regime and is better for life prediction in the low cycle life regime; however, the generalized strain energy model is relatively better for high cycle life prediction and is conservative for low cycle life prediction under multiaxial loadings...
August 9, 2017: Materials
https://www.readbyqxmd.com/read/28790790/an-observational-study-on-the-effects-of-aviation-turbine-fuel-and-lubricants-on-the-skin-of-indian-air-force-ground-crew-in-flying-stations
#15
S Radhakrishnan, Ajay Chopra, Debdeep Mitra, R Gnanasekaran, R Kanagaraj
BACKGROUND: Ground crew of the Air Force routinely handle aviation turbine fuel (ATF) and lubricants and a need was felt to study the adverse effects of these substances on their skin so that remedial measures could be taken to prevent these adverse effects. METHODS: A multi-centric, cross-sectional, observational study was performed at three Air Force flying stations. 109 ground crew members of the Indian Air Force (IAF) who were in direct contact with ATF and lubricants were screened for dermatological manifestations on exposed areas...
July 2017: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/28780315/closed-loop-communication-improves-task-completion-in-pediatric-trauma-resuscitation
#16
Ibrahim Abd El-Shafy, Jennifer Delgado, Meredith Akerman, Francesca Bullaro, Nathan A M Christopherson, Jose M Prince
BACKGROUND: Pediatric trauma care requires effective and clear communication in a time-sensitive manner amongst a variety of disciplines. Programs such as Crew Resource Management in aviation have been developed to systematically prevent errors. Similarly, teamSTEPPS has been promoted in healthcare with a strong focus on communication. We aim to evaluate the ability of closed-loop communication to improve time-to-task completion in pediatric trauma activations. METHODS: All pediatric trauma activations from January to September, 2016 at an American College of Surgeons verified level I pediatric trauma center were video recorded and included in the study...
August 2, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28776544/quantitative-evaluation-of-pain-with-pain-index-extracted-from-electroencephalogram
#17
Jian-Xiong An, Yong Wang, Doris K Cope, John P Williams
BACKGROUND: The current pain assessment methods are strongly subjective and easily affected by outside influences, and there is an urgent need to develop a reliable objective and quantitative pain-monitoring indicator. The aim of this study was to evaluate the feasibility of using Pain index (Pi) to assess pain symptoms in pain patients. METHODS: Subjects were enrolled from patients seeking treatment at Pain Medicine Center of China Medical University Aviation General Hospital from October 2015 to December 2016, such as postherpetic neuralgia, spinal cord injury, femoral head necrosis, lumbar disc herniation, trigeminal neuralgia, complex regional pain syndrome, perineal pain, phantom limb pain, etc...
August 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28773971/a-fracture-analysis-of-ti-10mo-8v-1fe-3-5al-alloy-screws-during-assembly
#18
Weifang Zhang, Yuanxing Huang, Wei Dai, Xiaoshuai Jin, Chang Yin
Titanium screws have properties that make them ideal for applications that require both a high strength-to-weight ratio and corrosion resistance, such as fastener applications for aviation and aerospace. The fracture behavior of Ti-10Mo-8V-1Fe-3.5Al (TB3) alloy screws during assembly was explored. Besides visual examination, other experimental techniques used for the investigation are as follows: (1) fracture characteristics and damage morphology via scanning electron microscopy (SEM); (2) chemical constituents via energy dispersive spectroscopy (EDS) and hydrogen concentration testing; (3) metallographic observation; (4) stress durability embrittlement testing; and (5) torsion simulation testing...
October 19, 2016: Materials
https://www.readbyqxmd.com/read/28768049/hazard-analysis-and-safety-requirements-for-small-drone-operations-to-what-extent-do-popular-drones-embed-safety
#19
Anastasios Plioutsias, Nektarios Karanikas, Maria Mikela Chatzimihailidou
Currently, published risk analyses for drones refer mainly to commercial systems, use data from civil aviation, and are based on probabilistic approaches without suggesting an inclusive list of hazards and respective requirements. Within this context, this article presents: (1) a set of safety requirements generated from the application of the systems theoretic process analysis (STPA) technique on a generic small drone system; (2) a gap analysis between the set of safety requirements and the ones met by 19 popular drone models; (3) the extent of the differences between those models, their manufacturers, and the countries of origin; and (4) the association of drone prices with the extent they meet the requirements derived by STPA...
August 2, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28753685/effects-of-lumbar-spine-assemblies-and-body-borne-equipment-mass-on-anthropomorphic-test-device-responses-during-drop-tests
#20
Daniel Aggromito, Mark Jaffrey, Allen Chhor, Bernard Chen, Wenyi Yan
When simulating or conducting land mine blast tests on armored vehicles to assess potential occupant injury, the preference is to use the Hybrid III anthropomorphic test device (ATD). In land blast events, neither the effect of body-borne equipment (BBE) on the ATD response nor the dynamic response index (DRI) is well understood. An experimental study was carried out using a drop tower test rig, with a rigid seat mounted on a carriage table undergoing average accelerations of 161 g and 232 g over 3 ms. A key aspect of the work looked at the various lumbar spine assemblies available for a Hybrid III ATD...
October 1, 2017: Journal of Biomechanical Engineering
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