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https://www.readbyqxmd.com/read/29161182/alcohol-biomarkers-associated-with-obstructive-sleep-apnea
#1
R Gregory Lande, Cynthia T Gragnani, Miriam Pourzand, Despina Hangemanole
The views expressed in this presentation are those of the author and do not reflect the official policy of the Department of the Army/Navy/Air Force or the Department of Defense The identification of specific products or scientific instrumentation does not constitute an endorsement or implied endorsement on the part of the authors, DoD, or any component agency. While we generally excise references to products, companies, manufacturers, organizations, etc. in government produced works, the abstracts produced and other similarly situated researchers presents a special circumstance when such product inclusions become an integral part of the scientific endeavor...
November 21, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/29159490/-prewarming-according-to-the-awmf-s3-guidelines-on-preventing-inadvertant-perioperative-hypothermia-2014-retrospective-analysis-of-7786-patients
#2
R Grote, A J Wetz, A Bräuer, M Menzel
BACKGROUND: Inadvertent perioperative hypothermia, which is defined as a core body temperature of less than 36.0 °C, can have serious consequences in surgery patients. These include cardiac complications, increased blood loss, wound infections and postoperative shivering; therefore, the scientific evidence that inadvertent perioperative hypothermia should be avoided is undisputed and several national guidelines have been published summarizing the scientific evidence and recommending specific procedures...
November 20, 2017: Der Anaesthesist
https://www.readbyqxmd.com/read/29158382/active-turbulence-in-a-gas-of-self-assembled-spinners
#3
Gašper Kokot, Shibananda Das, Roland G Winkler, Gerhard Gompper, Igor S Aranson, Alexey Snezhko
Colloidal particles subject to an external periodic forcing exhibit complex collective behavior and self-assembled patterns. A dispersion of magnetic microparticles confined at the air-liquid interface and energized by a uniform uniaxial alternating magnetic field exhibits dynamic arrays of self-assembled spinners rotating in either direction. Here, we report on experimental and simulation studies of active turbulence and transport in a gas of self-assembled spinners. We show that the spinners, emerging as a result of spontaneous symmetry breaking of clock/counterclockwise rotation of self-assembled particle chains, generate vigorous vortical flows at the interface...
November 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29156587/a-subnano-g-electrostatic-force-rebalanced-flexure-accelerometer-for-gravity-gradient-instruments
#4
Shitao Yan, Yafei Xie, Mengqi Zhang, Zhongguang Deng, Liangcheng Tu
A subnano-g electrostatic force-rebalanced flexure accelerometer is designed for the rotating accelerometer gravity gradient instrument. This accelerometer has a large proof mass, which is supported inversely by two pairs of parallel leaf springs and is centered between two fixed capacitor plates. This novel design enables the proof mass to move exactly along the sensitive direction and exhibits a high rejection ratio at its cross-axis directions. Benefiting from large proof mass, high vacuum packaging, and air-tight sealing, the thermal Brownian noise of the accelerometer is lowered down to less than 0...
November 18, 2017: Sensors
https://www.readbyqxmd.com/read/29156338/effect-of-laminaria-japonica-polysaccharides-on-lipids-monolayers-at-the-air-water-surface
#5
Juanjuan Yang, Changchun Hao, Runguang Sun
In this paper, we examined the effect of Laminaria japonica polysaccharides (LJP) on cationic 1,2-Dioleoyl-3-Trimethylammonium-Propane (DOTAP) and anionic 1,2-dipalmitoyl-sn-glycero-3-[phospho-rac-1-glycerol] (DPPG) monolayers at the air-water interface by the pressure-area isotherms (π-A), adsorption curves (π-t) and morphology measurements with atomic force microscopy (AFM) technique. The π-A curves revealed that the isotherms shifted to larger mean molecular area with progressive addition of LJP into subphase for both DOTAP and DPPG monolayers...
November 17, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29156256/effects-of-ambient-temperature-on-lung-function-in-patients-with-chronic-obstructive-pulmonary-disease-a-time-series-panel-study
#6
Zhijing Lin, Yutong Gu, Cong Liu, Yuanlin Song, Chunxue Bai, Renjie Chen, Shujing Chen, Haidong Kan
BACKGROUND: Limited evidence concerns the associations between ambient temperature and lung function and the results are mixed. OBJECTIVE: To evaluate the associations between temperature variations and daily fluctuations in pulmonary function in chronic obstructive pulmonary disease (COPD) patients. METHODS: We designed a time-series panel study of 28 male urban COPD patients with repeated daily lung function measurements from December 2012 to May 2013 in Shanghai, China...
November 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29156090/a-case-control-study-the-association-of-serum-paraoxonase-1-activity-and-concentration-with-the-development-of-type-2-diabetes-mellitus
#7
J Allen Crow, Edward C Meek, Robert W Wills, Janice E Chambers
BACKGROUND: A longitudinal study assessed serum paraoxonase 1 (PON1) activity and concentration as affected by age and as associated with the development of type 2 diabetes (T2D). PON1's recently established physiological function is the hydrolysis of lipolactones in oxidized LDL particles. METHODS: Serum samples and clinical data collected and stored at different time points over a 20 year interval in the Air Force Health Study were analyzed. PON1 activity and concentration and C-reactive protein (CRP) concentration in samples from the same individuals 20 years apart were compared using a paired t test (n=159)...
November 20, 2017: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/29154795/vision-improvement-in-pilots-with-presbyopia-following-perceptual-learning
#8
Anna Sterkin, Yuval Levy, Russell Pokroy, Maria Lev, Liora Levian, Ravid Doron, Oren Yehezkel, Moshe Fried, Yael Frenkel-Nir, Barak Gordon, Uri Polat
Israeli Air Force (IAF) pilots continue flying combat missions after the symptoms of natural near-vision deterioration, termed presbyopia, begin to be noticeable. Because modern pilots rely on the displays of the aircraft control and performance instruments, near visual acuity (VA) is essential in the cockpit. We aimed to apply a method previously shown to improve visual performance of presbyopes, and test whether presbyopic IAF pilots can overcome the limitation imposed by presbyopia. Participants were selected by the IAF aeromedical unit as having at least initial presbyopia and trained using a structured personalized perceptual learning method (GlassesOff application), based on detecting briefly presented low-contrast Gabor stimuli, under the conditions of spatial and temporal constraints, from a distance of 40 cm...
November 14, 2017: Vision Research
https://www.readbyqxmd.com/read/29154692/landing-kinematics-and-kinetics-at-the-knee-during-different-landing-tasks
#9
Nicholas R Heebner, Deirdre M Rafferty, Meleesa F Wohleber, Andrew J Simonson, Mita Lovalekar, Andrew Reinert, Timothy C Sell
CONTEXT:   Several tasks have been used to examine landing biomechanics for evaluation and rehabilitation, especially as related to anterior cruciate ligament injuries. However, comparing results among studies in which different tasks were used can be difficult, and it is unclear which task may be most appropriate. OBJECTIVE:   To compare lower extremity biomechanics across 5 commonly used landing tasks. DESIGN:   Descriptive laboratory study...
November 20, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29153727/lifetime-exposure-to-particulate-air-pollutants-is-negatively-associated-with-lung-function-in-non-asthmatic-children
#10
Hung-Chang Tsui, Chi-Hsien Chen, Ying-Hsuan Wu, Hung-Che Chiang, Bing-Yu Chen, Yue Leon Guo
BACKGROUND: Pulmonary function is known to be affected by acute and subacute exposure to ambient air pollution. However, the impacts of lifetime exposure to air pollution on the pulmonary function of children have been inconsistent. The present study investigated the impact of lifetime residential exposure to intermediate levels of air pollution on the pulmonary function of schoolchildren. METHODS: In 2011, a survey of children aged 6-15 years was conducted in 44 schools in Taiwan...
November 16, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29151822/new-actuation-mechanism-for-actively-cooled-sma-springs-in-a-neurosurgical-robot
#11
Shing Shin Cheng, Yeongjin Kim, Jaydev P Desai
The paper presents the use of shape memory alloy (SMA) spring actuators with real-time cooling to control the motion of the MINIR-II robot. A new actuation mechanism involving the passage of water as the cooling medium and air as the medium to drive out the water has been developed to facilitate real-time control of the springs. Control parameters, such as current, water flow rates, SMA pre-displacement, and gauge pressure of the compressed air, are identified from the SMA thermal model and from the actuation mechanism...
August 2017: IEEE Transactions on Robotics: a Publication of the IEEE Robotics and Automation Society
https://www.readbyqxmd.com/read/29151231/sleep-medicine-is-coming-of-age-in-military-medicine-report-from-the-military-health-system-research-symposium-2017-in-kissimmee-florida
#12
Arn H Eliasson, Christopher Lettieri, Nikolaus Netzer
In August 2017, the US Military Health System held its sixth annual Research Symposium for medical researchers from the US Army, Navy, Air Force, and Public Health Service. The symposium provides a collaborative environment for academia, industry, and military researchers who address advancement in areas of Combat Casualty Care, Military Operational Medicine, Clinical and Rehabilitative Medicine, and Military Infectious Diseases. This year, Sleep Medicine received substantial attention with presentations scattered throughout the program, poster presentations as well as a scheduled breakout session with podium presentations...
November 18, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29150015/the-flotation-and-adsorption-of-mixed-collectors-on-oxide-and-silicate-minerals
#13
REVIEW
Longhua Xu, Jia Tian, Houqin Wu, Zhongyuan Lu, Wei Sun, Yuehua Hu
The analysis of flotation and adsorption of mixed collectors on oxide and silicate minerals is of great importance for both industrial applications and theoretical research. Over the past years, significant progress has been achieved in understanding the adsorption of single collectors in micelles as well as at interfaces. By contrast, the self-assembly of mixed collectors at liquid/air and solid/liquid interfaces remains a developing area as a result of the complexity of the mixed systems involved and the limited availability of suitable analytical techniques...
November 11, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/29149812/architectures-and-mechanical-properties-of-drugs-and-complexes-of-surface-active-compounds-at-air-water-and-oil-water-interfaces
#14
Dipak K Sarker
BACKGROUND: Drugs can represents a multitude of compounds from proteins and peptides, such as growth hormones and insulin and on to simple organic molecules such as flurbiprofen, ibuprofen and lidocaine. Given the chemical nature of these compounds two features are always present. A portion or portions of the molecule that has little affinity for apolar surfaces and media and the opposite a series of part or one large part that has considerable affinity for hydrophilic, polar or charged media and surfaces...
November 17, 2017: Current Drug Discovery Technologies
https://www.readbyqxmd.com/read/29148717/raman-spectroscopy-of-single-light-absorbing-carbonaceous-particles-levitated-in-air-using-an-annular-laser-beam
#15
Masaru Uraoka, Keisuke Maegawa, Shoji Ishizaka
A laser trapping technique is a powerful means to investigate the physical and chemical properties of single aerosol particles in a non-contact manner. However, optical trapping of strongly light-absorbing particles such as black carbon or soot is quite difficult because the repulsive force caused by heat is orders of magnitude larger than the attractive force of radiation pressure. In this study, a laser trapping and Raman microspectroscopy system using an annular laser beam was constructed to achieve non-contact levitation of single light-absorbing particles in air...
November 17, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29146272/obstruction-phenotype-as-a-predictor-of-asthma-severity-and-instability-in-children
#16
Ronald L Sorkness, Edward M Zoratti, Meyer Kattan, Peter J Gergen, Michael D Evans, Cynthia M Visness, Michelle Gill, Gurjit K Khurana Hershey, Carolyn M Kercsmar, Andrew H Liu, George T O'Connor, Jacqueline A Pongracic, Dinesh Pillai, Christine A Sorkness, Alkis Togias, Robert A Wood, William W Busse
BACKGROUND: Small airways instability, resulting in premature airway closure, has been recognized as a risk for asthma severity and poor control. Although spirometry has limited sensitivity for detecting small airway dysfunction, a focus on the air-trapping component of obstruction may identify a risk factor for asthma instability. OBJECTIVE: To use spirometric measurements to identify patterns of airway obstruction in children, and define obstruction phenotypes that relate to asthma instability...
November 13, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29144292/the-response-of-nitrous-oxide-emissions-to-different-operating-conditions-in-activated-sludge-wastewater-treatment-plants-in-southeastern-brazil
#17
Renato P Ribeiro, Rodrigo F Bueno, Roque P Piveli, Débora C Kligerman, William Z de Mello, Jaime L M Oliveira
The continuous measurements of N2O emissions from the aeration tanks of three activated sludge wastewater treatment plants (WWTPs) operated with biological nitrogen removal (BNR) and non-BNR were performed during the different operating conditions of several parameters, such as aeration, dissolved oxygen (DO) profiling and organic shock loading (with landfill leachate). The nitrification process is the main driving force behind N2O emission peaks. There are indications that the variation of the air flow rate influenced N2O emissions; high N2O emissions denote over-aeration conditions or incomplete nitrification, with accumulation of NO2(-) concentrations...
November 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29143840/nonaffine-deformation-and-tunable-yielding-of-colloidal-assemblies-at-the-air-water-interface
#18
Armando Maestro, Alessio Zaccone
Silica nanoparticles trapped at the air-water interface form a 2D solid state with amorphous order. We propose a theoretical model to describe how this solid-like state deforms under a shear strain ramp up to and beyond a yielding point which leads to plastic flow. The model accounts for all the particle-level and many-body physics of the system: nonaffine displacements, local connectivity and its evolution in terms of cage-breaking, and interparticle interactions mediated by the particle chemistry and colloidal forces...
November 16, 2017: Nanoscale
https://www.readbyqxmd.com/read/29142003/disparities-in-environmental-exposures-to-endocrine-disrupting-chemicals-and-diabetes-risk-in-vulnerable-populations
#19
Daniel Ruiz, Marisol Becerra, Jyotsna S Jagai, Kerry Ard, Robert M Sargis
Burgeoning epidemiological, animal, and cellular data link environmental endocrine-disrupting chemicals (EDCs) to metabolic dysfunction. Disproportionate exposure to diabetes-associated EDCs may be an underappreciated contributor to disparities in metabolic disease risk. The burden of diabetes is not uniformly borne by American society; rather, this disease disproportionately affects certain populations, including African Americans, Latinos, and low-income individuals. The purpose of this study was to review the evidence linking unequal exposures to EDCs with racial, ethnic, and socioeconomic diabetes disparities in the U...
November 15, 2017: Diabetes Care
https://www.readbyqxmd.com/read/29140678/robust-superhydrophobic-carbon-nanotube-film-with-lotus-leaf-mimetic-multiscale-hierarchical-structures
#20
Pengwei Wang, Tianyi Zhao, Ruixin Bian, Guangyan Wang, Huan Liu
Superhydrophobic carbon nanotube (CNT) films have demonstrated many fascinating performances in versatile applications, especially for those involving solid/liquid interfacial processes, because of their ability to affect the material/energy transfer at interfaces. Thus, developing superhydrophobic CNTs has attracted extensive research interests in the past decades, and it could be achieved either by surface coating of low-free energy materials or by constructing micro/nanohierarchical structures via various complicated processes...
November 17, 2017: ACS Nano
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