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https://www.readbyqxmd.com/read/28336003/efficacy-of-a-titanium-dioxide-nanoparticles-based-indoor-anti-odor-product-as-assessed-by-electronic-nose-and-gaschromatography-mass-spectrometry
#1
Mara Mirasoli, Roberto Gotti, Massimo Di Fusco, Giulia Basaglia, Jessica Fiori, Aldo Roda
Indoor air pollutants and odorants may have psychological and physical impact on exposed individuals and the unpleasant room air is considered as one of the factors associated with sick building syndrome comprising general symptoms such as headache and lethargy. Approaches for improving the quality of indoor air are thus important as support for human health and well-being. Photo-oxidation catalyzed by titanium dioxide (TiO2), is one of the methods used for elimination of volatile organic compounds, which are the cause of odor nuisance in indoor and outdoor air...
March 9, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28318502/efficacy-of-virtual-reality-in-pedestrian-safety-research
#2
Shuchisnigdha Deb, Daniel W Carruth, Richard Sween, Lesley Strawderman, Teena M Garrison
Advances in virtual reality technology present new opportunities for human factors research in areas that are dangerous, difficult, or expensive to study in the real world. The authors developed a new pedestrian simulator using the HTC Vive head mounted display and Unity software. Pedestrian head position and orientation were tracked as participants attempted to safely cross a virtual signalized intersection (5.5 m). In 10% of 60 trials, a vehicle violated the traffic signal and in 10.84% of these trials, a collision between the vehicle and the pedestrian was observed...
March 16, 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28269162/a-frequency-based-spatial-filter-to-mitigate-volume-conduction-in-electroencephalogram-signals
#3
Srinivas Kota, Adre du Plessis, An N Massaro, Taeun Chang, Tareq Al-Shargabi, Rathinaswamy B Govindan
Volume conduction is a major problem in spatial-temporal electroencephalogram (EEG) signals. We propose a frequency dependent subtraction approach to address the volume conduction problem in EEG signals. We validate the proposed approach using simulated data and discuss the application of the approach to the EEG data recorded from three sick infants. The frequency dependent subtraction mitigated the common signal better than the traditionally used re-referencing the EEG signals to the global average of EEG from all electrodes...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28243206/spo2-and-heart-rate-during-a-real-hike-at-altitude-are-significantly-different-than-at-its-simulation-in-normobaric-hypoxia
#4
Nikolaus C Netzer, Linda Rausch, Arn H Eliasson, Hannes Gatterer, Matthias Friess, Martin Burtscher, Stephan Pramsohler
Rationale: Exposures to simulated altitude (normobaric hypoxia, NH) are frequently used in preparation for mountaineering activities at real altitude (hypobaric hypoxia, HH). However, physiological responses to exercise in NH and HH may differ. Unfortunately clinically useful information on such differences is largely lacking. This study therefore compared exercise responses between a simulated hike on a treadmill in NH and a similar field hike in HH. Methods: Six subjects (four men) participated in two trials, one in a NH chamber and a second in HH at an altitude of 4,205 m on the mountain Mauna Kea...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28231398/living-with-melanoma-%C3%A2-for-a-day-a-phenomenological-analysis-of-medical-students-simulated-experiences
#5
M Corr, G Roulston, N King, T Dornan, C Blease, G J Gormley
BACKGROUND: Despite the rising incidence of melanoma, medical students have progressively fewer opportunities to encounter patients with this important condition. Curricula tend to attach the greatest value to intellectual forms of learning. Compared to intellectual learning, however, experiential learning affords students deep insights about a condition. Doctors who experience ill health are more empathic towards patients. However opportunities to learn about cancer experientially are limited...
February 23, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28227391/a-frequency-based-spatial-filter-to-mitigate-volume-conduction-in-electroencephalogram-signals
#6
Srinivas Kota, Adre du Plessis, An N Massaro, Taeun Chang, Tareq Al-Shargabi, Rathinaswamy B Govindan, Srinivas Kota, Adre du Plessis, An N Massaro, Taeun Chang, Tareq Al-Shargabi, Rathinaswamy B Govindan, Taeun Chang, Srinivas Kota, Rathinaswamy B Govindan, Tareq Al-Shargabi, Adre Du Plessis, An N Massaro
Volume conduction is a major problem in spatial-temporal electroencephalogram (EEG) signals. We propose a frequency dependent subtraction approach to address the volume conduction problem in EEG signals. We validate the proposed approach using simulated data and discuss the application of the approach to the EEG data recorded from three sick infants. The frequency dependent subtraction mitigated the common signal better than the traditionally used re-referencing the EEG signals to the global average of EEG from all electrodes...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28222783/walking-in-fully-immersive-virtual-environments-an-evaluation-of-potential-adverse-effects-in-older-adults-and-individuals-with-parkinson-s-disease
#7
Aram Kim, Nora Darakjian, James M Finley
BACKGROUND: Virtual reality (VR) has recently been explored as a tool for neurorehabilitation to enable individuals with Parkinson's disease (PD) to practice challenging skills in a safe environment. Current technological advances have enabled the use of affordable, fully immersive head-mounted displays (HMDs) for potential therapeutic applications. However, while previous studies have used HMDs in individuals with PD, these were only used for short bouts of walking. Clinical applications of VR for gait training would likely involve an extended exposure to the virtual environment, which has the potential to cause individuals with PD to experience simulator-related adverse effects due to their age or pathology...
February 21, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28211829/virtual-and-augmented-reality-in%C3%A2-the%C3%A2-treatment-of-phantom-limb-pain-a%C3%A2-literature-review
#8
Justin Dunn, Elizabeth Yeo, Parisah Moghaddampour, Brian Chau, Sarah Humbert
BACKGROUND: Phantom limb pain (PLP), the perception of discomfort in a limb no longer present, commonly occurs following amputation. A variety of interventions have been employed for PLP, including mirror therapy. Virtual Reality (VR) and augmented reality (AR) mirror therapy treatments have also been utilized, and have the potential to provide an even greater immersive experience for the amputee. However, there is not currently a consensus on the efficacy of VR and AR therapy. OBJECTIVE: The aim of this review is to evaluate and summarize the current research on the effect of immersive VR and AR in the treatment of PLP...
February 13, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28150962/passive-restraint-reduces-visually-induced-motion-sickness-in-older-adults
#9
Behrang Keshavarz, Alison C Novak, Lawrence J Hettinger, Thomas A Stoffregen, Jennifer L Campos
Virtual environments such as those used in video games and driving/flight simulators are used for entertainment and training, but are often associated with visually induced motion sickness (VIMS). In this study, we asked whether passive restraint of the head and torso could reduce VIMS in younger and older adults. Twenty-one younger (18-35 years) and 16 older (65 + years) healthy adults engaged in a simulated driving task using a console video game while seated. On different days, participants completed 2 conditions: (a) in the unrestrained condition, participants were seated in a chair without a backrest and were free to move and (b) in the restrained condition, participants' head and torso were passively restrained to the backrest and headrest of the seat using tense elastic strips...
March 2017: Journal of Experimental Psychology. Applied
https://www.readbyqxmd.com/read/28112272/endothelia-targeting-protection-by-escin-in-decompression-sickness-rats
#10
Kun Zhang, Zhongxin Jiang, Xiaowei Ning, Xuhua Yu, Jiajun Xu, Peter Buzzacott, Weigang Xu
Endothelial dysfunction is involved in the pathogenesis of decompression sickness (DCS) and contributes substantively to subsequent inflammatory responses. Escin, the main active compound in horse chestnut seed extract, is well known for its endothelial protection and anti-inflammatory properties. This study aimed to investigate the potential protection of escin against DCS in rats. Escin was administered orally to adult male rats for 7 d (1.8 mg/kg/day) before a simulated air dive. After decompression, signs of DCS were monitored, and blood and pulmonary tissue were sampled for the detection of endothelia related indices...
January 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28107552/reflections-on-the-history-of-indoor-air-science-focusing-on-the-last-50%C3%A2-years
#11
J Sundell
The scientific articles and Indoor Air conference publications of the indoor air sciences (IAS) during the last 50 years are summarized. In total 7524 presentations, from 79 countries, have been made at Indoor Air conferences held between 1978 (49 presentations) and 2014 (1049 presentations). In the Web of Science, 26 992 articles on indoor air research (with the word "indoor" as a search term) have been found (as of 1 Jan 2016) of which 70% were published during the last 10 years. The modern scientific history started in the 1970s with a question: "did indoor air pose a threat to health as did outdoor air?" Soon it was recognized that indoor air is more important, from a health point of view, than outdoor air...
January 20, 2017: Indoor Air
https://www.readbyqxmd.com/read/28056016/predicting-the-impact-of-intervention-strategies-for-sleeping-sickness-in-two-high-endemicity-health-zones-of-the-democratic-republic-of-congo
#12
Kat S Rock, Steve J Torr, Crispin Lumbala, Matt J Keeling
Two goals have been set for Gambian human African trypanosomiasis (HAT), the first is to achieve elimination as a public health problem in 90% of foci by 2020, and the second is to achieve zero transmission globally by 2030. It remains unclear if certain HAT hotspots could achieve elimination as a public health problem by 2020 and, of greater concern, it appears that current interventions to control HAT in these areas may not be sufficient to achieve zero transmission by 2030. A mathematical model of disease dynamics was used to assess the potential impact of changing the intervention strategy in two high-endemicity health zones of Kwilu province, Democratic Republic of Congo...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28008825/simulating-the-elimination-of-sleeping-sickness-with-an-agent-based-model
#13
Pascal Grébaut, Killian Girardin, Valentine Fédérico, François Bousquet
Although Human African Trypanosomiasis is largely considered to be in the process of extinction today, the persistence of human and animal reservoirs, as well as the vector, necessitates a laborious elimination process. In this context, modeling could be an effective tool to evaluate the ability of different public health interventions to control the disease. Using the Cormas(®) system, we developed HATSim, an agent-based model capable of simulating the possible endemic evolutions of sleeping sickness and the ability of National Control Programs to eliminate the disease...
2016: Parasite: Journal de la Société Française de Parasitologie
https://www.readbyqxmd.com/read/27990636/factitious-disorder-in-a-patient-claiming-to-be-a-sexually-sadistic-serial-killer
#14
Christopher A Fischer, Mace Beckson, Park Dietz
Factitious disorder involves the conscious simulation of psychological or physiological symptoms of illness, for the purpose of fulfilling the unconscious desire to be taken care of or to assume the "sick role." Typically patients with factitious disorder simulate conditions that are designed to arouse feelings of empathy in care providers with the intention to engage them in caretaking. However, patients might also simulate conditions that arouse revulsion or rejection and still meet full diagnostic criteria for factitious disorder...
December 19, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27939053/experimental-variation-of-social-stress-in-virtual-reality-feasibility-and-first-results-in-patients-with-psychotic-disorders
#15
Klaus Hesse, Philipp A Schroeder, Jonathan Scheeff, Stefan Klingberg, Christian Plewnia
BACKGROUND AND OBJECTIVES: Social interaction might lead to increased stress levels in patients with psychotic disorders. Impaired social stress tolerance is critical for social functioning and closely linked with symptom relapse and hospitalization. We present an interactive office built-up in virtual reality (VR). METHODS: Patients with psychotic disorders (PP, N = 26 including N = 5 dropouts) and matched healthy controls (HC, N = 20) were examined with a VR simulating an open-plan office...
November 17, 2016: Journal of Behavior Therapy and Experimental Psychiatry
https://www.readbyqxmd.com/read/27770585/comparison-of-a-virtual-older-driver-assessment-with-an-on-road-driving-test
#16
Ranmalee Eramudugolla, Jasmine Price, Sidhant Chopra, Xiaolan Li, Kaarin J Anstey
OBJECTIVES: To design a low-cost simulator-based driving assessment for older adults and to compare its validity with that of an on-road driving assessment and other measures of older driver risk. DESIGN: Cross-sectional observational study. SETTING: Canberra, Australia. PARTICIPANTS: Older adult drivers (N = 47; aged 65-88, mean age 75.2). MEASUREMENTS: Error rate on a simulated drive with environment and scoring procedure matched to those of an on-road test...
December 2016: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/27747138/immersive-molecular-visualization-with-omnidirectional-stereoscopic-ray-tracing-and-remote-rendering
#17
John E Stone, William R Sherman, Klaus Schulten
Immersive molecular visualization provides the viewer with intuitive perception of complex structures and spatial relationships that are of critical interest to structural biologists. The recent availability of commodity head mounted displays (HMDs) provides a compelling opportunity for widespread adoption of immersive visualization by molecular scientists, but HMDs pose additional challenges due to the need for low-latency, high-frame-rate rendering. State-of-the-art molecular dynamics simulations produce terabytes of data that can be impractical to transfer from remote supercomputers, necessitating routine use of remote visualization...
May 2016: IEEE International Symposium on Parallel & Distributed Processing, Workshops and Phd Forum: [proceedings]
https://www.readbyqxmd.com/read/27662351/screening-and-mitigation-of-layperson-anxiety-in-aerospace-environments
#18
REVIEW
Robert A Mulcahy, Rebecca S Blue, Johnené L Vardiman, Tarah L Castleberry, James M Vanderploeg
INTRODUCTION: Anxiety may present challenges for commercial spaceflight operations, as little is known regarding the psychological effects of spaceflight on laypersons. A recent investigation evaluated measures of anxiety during centrifuge-simulated suborbital commercial spaceflight, highlighting the potential for severe anxiousness to interrupt spaceflight operations. METHODS: To pave the way for future research, an extensive literature review identified existing knowledge that may contribute to formation of interventions for anxiety in commercial spaceflight...
2016: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/27658590/impact-of-irrigation-extension-on-malaria-transmission-in-simret-tigray-ethiopia
#19
Bonhee Chung
Poor subsistence farmers who live in a semi-arid area of northern Ethiopia build irrigation systems to overcome water shortages. However, there is a high risk of malaria transmission when increased standing water provides more favorable habitats for mosquito breeding. This is a serious problem because there are many barriers to malaria control measures and health care systems in the area. Using a causal loop diagram and computer simulations, the author attempted to visually illustrate positive and negative feedbacks between mosquito and human populations in the context of Simret, which is a small village located in northern Ethiopia and is generally considered a malaria-free area...
August 2016: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/27633193/mitigating-simulator-adaptation-syndrome-by-means-of-tactile-stimulation
#20
Germán Gálvez-García, Javier Albayay, Lucio Rehbein, Francisco Tornay
Some drivers experience Simulator Adaptation Syndrome (SAS), a condition in which nausea, disorientation, dizziness, headache, and difficulty focusing, are exhibited when driving in a simulator. To reduce this syndrome, we investigated the efficacy of tactile stimulation (TS) on mitigating Simulator Adaptation Syndrome (SAS) in a driving simulation. Fifteen drivers (eight women; mean age = 24.07 years) participated in this experiment. We compared the total scores of the Simulator Sickness Questionnaire (SSQ) across two stimulation conditions (TS condition and no stimulation condition as a baseline measure)...
January 2017: Applied Ergonomics
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