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https://www.readbyqxmd.com/read/28535632/-short-term-effects-of-fine-particulate-matter-exposure-on-pulmonary-function-in-healthy-young-adults-a-time-series-study
#1
Q Yu, J P Liao, Y Hu, X Y Li, C Zhang, X L Li, C L Que, G F Wang
Objective: To explore the short-term effects of fine particulate matter (PM2.5) exposure on pulmonary function of healthy young adults in Beijing. Methods: In this time series study, twenty-four healthy young adults who living around Guanyuan area were investigated in Beijing. The follow-up study was lasted for 12 days in total from Nov. 28, 2016 to Dec. 9, 2016, and pulmonary spirometry and inpulse oscillometry parameters were measured daily. Air pollution data (including PM2.5, etc.) and meteorological data (temperature, humidity, etc...
May 16, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28535344/clarifying-the-controversial-catalytic-performance-of-co-oh-2-and-co3o4-for-oxygen-reduction-evolution-reactions-toward-efficient-zn-air-batteries
#2
Zhishuang Song, Xiaopeng Han, Yida Deng, Naiqin Zhao, Wenbin Hu, Cheng Zhong
Cobalt-based nanomaterials have been widely studied as catalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) due to their remarkable bifunctional catalytic activity, low cost and easy available. However, controversial results concerning OER/ORR performance exist between different types of cobalt-based catalysts, especially for Co(OH)2 and Co3O4. To address this issue, we develop a facile electrochemical deposition method to grow Co(OH)2 directly on the skeleton of carbon cloth, and further Co3O4 was obtained by post thermal treatment...
May 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28533327/serum-amyloid-a-an-ozone-induced-circulating-factor-with-potentially-important-functions-in-the-lung-brain-axis
#3
Michelle A Erickson, Joseph Jude, Hengjiang Zhao, Elizabeth M Rhea, Therese S Salameh, William Jester, Shelley Pu, Jenna Harrowitz, Ngan Nguyen, William A Banks, Reynold A Panettieri, Kelly L Jordan-Sciutto
Accumulating evidence suggests that O3 exposure may contribute to CNS dysfunction. Here, we posit that inflammatory and acute-phase proteins in the circulation increase after O3 exposure and systemically convey signals of O3 exposure to the CNS. To model acute O3 exposure, female Balb/c mice were exposed to 3 ppm O3 or forced air for 2 h and were studied after 6 or 24 h. Of 23 cytokines and chemokines, only KC/CXCL1 was increased in blood 6 h after O3 exposure. The acute-phase protein serum amyloid A (A-SAA) was significantly increased by 24 h, whereas C-reactive protein was unchanged...
May 22, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28531974/biomimetic-collagen-phospholipid-coatings-improve-formation-of-hydroxyapatite-nanoparticles-on-titanium
#4
Gilia C M Ruiz, Marcos A E Cruz, Amanda N Faria, Daniela C Zancanela, Pietro Ciancaglini, Ana P Ramos
Osseointegration between the surface of a certain material and the host tissue helps to evaluate the potential use of biomaterials in bone replacement. The physicochemical properties and biochemical composition of the material's surface regulates osseointegration. This study investigates how collagen into biomimetic matrixes affects hydroxyapatite (HAp) growth. Collagen was inserted into insoluble Langmuir monolayers containing either 1,2-dipalmitoyl-sn-glycero-3-phosphatidylcholine (DPPC) or octadecylphosphonic acid (OPA) and transferred to titanium (Ti) supports by means of the Langmuir-Blodgett (LB) technique...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28530278/synthesis-and-fast-transfer-of-monolayer-mos2-on-reusable-fused-silica
#5
Tao Liang, Shuang Xie, Weifei Fu, Yu Cai, Chinnathambi Shanmugavel, Hideo Iwai, Daisuke Fujita, Nobutaka Hanagata, Hongzheng Chen, Mingsheng Xu
Atomically thin, two-dimensional materials ranging from superconductors, metals, semiconductors to insulators are emerging as potential candidates for the next-generation digital electronics and optoelectronic applications. Their synthesis on a commonly used substrate and fast transfer to a plenty of desired substrates need to be addressed to meet the industrialization criteria for practical applications. In this study, fused silica, which is amorphous, transparent, and inexpensive, was examined as a substrate for MoS2 synthesis...
May 22, 2017: Nanoscale
https://www.readbyqxmd.com/read/28528348/effect-of-home-noninvasive-ventilation-with-oxygen-therapy-vs-oxygen-therapy-alone-on-hospital-readmission-or-death-after-an-acute-copd-exacerbation-a-randomized-clinical-trial
#6
Patrick B Murphy, Sunita Rehal, Gill Arbane, Stephen Bourke, Peter M A Calverley, Angela M Crook, Lee Dowson, Nicholas Duffy, G John Gibson, Philip D Hughes, John R Hurst, Keir E Lewis, Rahul Mukherjee, Annabel Nickol, Nicholas Oscroft, Maxime Patout, Justin Pepperell, Ian Smith, John R Stradling, Jadwiga A Wedzicha, Michael I Polkey, Mark W Elliott, Nicholas Hart
Importance: Outcomes after exacerbations of chronic obstructive pulmonary disease (COPD) requiring acute noninvasive ventilation (NIV) are poor and there are few treatments to prevent hospital readmission and death. Objective: To investigate the effect of home NIV plus oxygen on time to readmission or death in patients with persistent hypercapnia after an acute COPD exacerbation. Design, Setting, and Participants: A randomized clinical trial of patients with persistent hypercapnia (Paco2 >53 mm Hg) 2 weeks to 4 weeks after resolution of respiratory acidemia, who were recruited from 13 UK centers between 2010 and 2015...
May 21, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28527547/the-optimal-time-and-method-for-surgical-prewarming-a-comprehensive-review-of-the-literature
#7
Lauren Connelly, Emily Cramer, Quinn DeMott, Jennifer Piperno, Bethany Coyne, Clara Winfield, Michael Swanberg
PURPOSE: Inadvertent hypothermia is a common problem in the operating room. This can contribute to many unfavorable outcomes --rising costs, increased complications, and higher morbidity rates. DESIGN: This review determined the optimal method and time to prewarm a surgical patient to prevent perioperative hypothermia. METHODS: CINAHL and PubMed were searched. Fourteen articles were ultimately included in this review. FINDINGS: Based on the literature reviewed, it was suggested that forced-air warming was most effective in preventing perioperative hypothermia...
June 2017: Journal of Perianesthesia Nursing: Official Journal of the American Society of PeriAnesthesia Nurses
https://www.readbyqxmd.com/read/28523651/microstructure-and-nanomechanical-properties-of-single-stalks-from-diatom-didymosphenia-geminata-and-their-change-due-to-adsorption-of-selected-metal-ions
#8
Izabela Zgłobicka, Adrian Chlanda, Michał Woźniak, Maciej Łojkowski, Robert Szoszkiewicz, Marta Mazurkiewicz-Pawlicka, Wojciech Święszkowski, Elżbieta Wyroba, Krzysztof J Kurzydłowski
We present topographical and nanomechanical characterization of single Didymosphenia geminata stalks. We compared the samples before and after adsorption of metal ions from fresh water samples. Transmission electron microscopy studies of single stalks cross-sections have shown three distinct layers and an additional thin extra coat on the external layer (called here "EL"). Using scanning electron microscopy and atomic force microscopy (AFM) we found that topography of single stalks after ionic adsorption differs significantly from topography of pristine stalks...
May 18, 2017: Journal of Phycology
https://www.readbyqxmd.com/read/28520564/normothermic-cardiopulmonary-bypass-in-patient-with-waldenstr%C3%A3-m-s-macroglobulinemia-and-cryoglobulinemia-a-case-report
#9
Shiho Satomi, Asuka Kasai, Eisuke Hamaguchi, Yasuo M Tsutsumi, Katsuya Tanaka
Waldenström's macroglobulinemia (WM) manifests as hyperviscosity syndrome. Cryoglobulinemia, which may increase blood viscosity or induce thrombosis in association with decreased body temperature, can occur in combination with WM. We describe the management of an 82-year-old woman with WM, hyperviscosity syndrome, and cryoglobulinemia who required open aortic valve replacement. Decreased body temperature in this patient was prevented during cardiopulmonary bypass by using a forced air warming system and normothermic cardioplegia with continuous warm blood cardioplegia perfusion...
May 17, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28518007/patient-centric-side-effect-risk-assessment-for-medications-used-during-aeromedical-evacuations
#10
Shana A Huntsberger, William P Butler, Richard R Chapleau
BACKGROUND: The U.S. Air Force performs more than 6000 aeromedical transport flights annually, both internationally and domestically. Many of these flights include patients requiring pain relief medications. The risk of side effects from such medications administered at altitude is unknown, but understanding these risks is vital when selecting the safest pain management strategies to achieve optimal postflight outcomes. METHODS: Using an evidence-based medication side effect risk assessment model, we compared our patient-centric approach to an aircrew-centric approach using medications approved for use in U...
April 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28518004/middle-ear-barotrauma-in-student-pilots
#11
Jung Heob Sohn, Kyoung Rai Cho
INTRODUCTION: The present study reports the clinical features of middle ear barotrauma in student pilots in the Republic of Korea Air Force. METHODS: The authors reviewed medical records of student pilots with barotrauma. The grade of barotrauma was assigned using Teed's classification. This study included nasal symptoms, endoscopic findings of the nasal cavity, and clinical course (duration, recurrence). The relationship between middle ear barotrauma and the nasal airway was also evaluated...
April 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28518002/cognitive-evaluation-of-israeli-air-force-pilot-cadets
#12
Shirley Gordon, Chen Goren, Erez Carmon, Leah Shelef
OBJECTIVE: In aviation psychology, there is a constant need for the cognitive evaluation of pilots as part of operational fitness and safety criteria. METHODS: A cross-sectional study with comparison between the performance of Israeli Air Force pilot cadets (N = 318) and U.S. Air Force pilot training candidates (N = 512) as assessed by a cognitive battery was undertaken. The data of the comparison group was collected from Callister, King, and Retzlaff, as published in 1996...
April 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28516401/endovascular-crossing-of-chronic-total-occlusions-using-an-impulse-an-explorative-design-study
#13
Aimée Sakes, Marleen van der Wiel, Dimitra Dodou, Paul Breedveld
In this study we investigated whether exerting an impulse on a Chronic Total Occlusion (CTO) improves the success rate of CTO crossing as compared to the currently used method of statically pushing the guidewire against the CTO. A prototype (Ø2 mm) was developed that generates translational momentum using a spring-loaded indenter and converts it to an impulse during impact. Mechanical performance was evaluated by measuring the peak force and momentum for different spring compressions and strike distances in air and blood-mimicking fluid...
May 17, 2017: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/28516352/air-pollution-and-respiratory-health-among-diabetic-and-non-diabetic-subjects-in-pune-india-results-from-the-wellcome-trust-genetic-study
#14
Morteza Abdullatif Khafaie, Sundeep Santosh Salvi, Chittaranjan Sakerlal Yajnik, Ajay Ojha, Behzad Khafaie, Sharad Damodar Gore
Diabetics may be more vulnerable to the harmful effects of ambient air pollutants than healthy individuals. But, the risk factors that lead to susceptibility to air pollution in diabetics have not yet been identified. We examined the effect of exposure to ambient PM10 on chronic symptoms and the pulmonary function tests (PFT) in diabetic and non-diabetic subjects. Also, to investigate possible determinants of susceptibility, we recruited 400 type 2 diabetic and 465 healthy subjects who were investigated for chronic respiratory symptoms (CRSs) and then underwent measurement of forced vital capacity (FVC) and forced expiratory volume 1 (FEV1) according to standard protocol...
May 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28514320/preoperative-warming-versus-no-preoperative-warming-for-maintenance-of-normothermia-in-women-receiving-intrathecal-morphine-for-cesarean-delivery-a-single-blinded-randomized-controlled-trial
#15
Judy Munday, Sonya Osborne, Patsy Yates, David Sturgess, Lee Jones, Edward Gosden
BACKGROUND: Rates of hypothermia for women undergoing spinal anesthesia for cesarean delivery are high and prevention is desirable. This trial compared the effectiveness of preoperative warming versus usual care among women receiving intrathecal morphine, which is thought to exacerbate perioperative heat loss. METHODS: A prospective, single-blinded, randomized controlled trial compared 20 minutes of forced air warming (plus intravenous fluid warming) versus no active preoperative warming (plus intravenous fluid warming) in 50 healthy American Society of Anesthesiologists graded II women receiving intrathecal morphine as part of spinal anesthesia for elective cesarean delivery...
May 12, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28513479/producing-lasting-amphiphobic-building-surfaces-with-self-cleaning-properties
#16
Dario Facio, Luis Carrascosa, Maria Jesus Mosquera
Nowadays, producing building surfaces that prevent water and oil uptake and which present self-cleaning activity is still a challenge. In this study, amphiphobic (superhydrophobic and oleophobic) building surfaces were successfully produced. A simple and low-cost process was developed, which is applicable to large-scale building surfaces, according the following procedure: (1) By spraying a SiO2 nanocomposite which produces a closely-packed nanoparticle uniform topography; (2) By functionalizing the previous coating with a fluorinated alkoxysilane, producing high hydrophobicity and oleophobicity...
May 17, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28513472/experimental-and-numerical-studies-of-beetle-inspired-flapping-wing-in-hovering-flight
#17
Tien Van Truong, Tuyen Quang Le, Hoon Cheol Park, Doyoung Byun
In this paper, we measure unsteady forces and visualize 3D vortices around a beetle-like flapping wing model in hovering flight by experiment and numerical simulation. The measurement of unsteady forces and flow patterns around the wing were conducted using a dynamically scaled wing model in the mineral-oil tank. The wing kinematics were directly derived from the experiment of a real beetle. The 3D flow structures of the flapping wing were captured by using air bubble visualization while forces were measured by a sensor attached at the wing base...
May 17, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28512417/a-case-of-paraneoplastic-cushing-syndrome-presenting-as-hyperglycemic-hyperosmolar-nonketotic-syndrome
#18
Christina E Brzezniak, Nicole Vietor, Patricia E Hogan, Bryan Oronsky, Bennett Thilagar, Carolyn M Ray, Scott Caroen, Michelle Lybeck, Neil Oronsky, Corey A Carter
Carcinoid tumors are neuroendocrine tumors that mainly arise in the gastrointestinal tract, lungs, and bronchi. Bronchopulmonary carcinoids have been associated with Cushing syndrome, which results from ectopic adrenocorticotrophic hormone (ACTH) secretion. We report the case of a 65-year-old man, a colonel in the US Air Force, with metastatic bronchopulmonary carcinoid tumors treated on a clinical trial who was hospitalized for complaints of increasing thirst, polydipsia, polyuria, weakness, and visual changes...
January 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28512304/nearly-perfect-durable-superhydrophobic-surfaces-fabricated-by-a-simple-one-step-plasma-treatment
#19
Jeongeun Ryu, Kiwoong Kim, JooYoung Park, Bae Geun Hwang, YoungChul Ko, HyunJoo Kim, JeongSu Han, EungRyeol Seo, YongJong Park, Sang Joon Lee
Fabrication of superhydrophobic surfaces is an area of great interest because it can be applicable to various engineering fields. A simple, safe and inexpensive fabrication process is required to fabricate applicable superhydrophobic surfaces. In this study, we developed a facile fabrication method of nearly perfect superhydrophobic surfaces through plasma treatment with argon and oxygen gases. A polytetrafluoroethylene (PTFE) sheet was selected as a substrate material. We optimized the fabrication parameters to produce superhydrophobic surfaces of superior performance using the Taguchi method...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28511274/a-case-of-chagas-cardiomyopathy-following-infection-in-south-central-texas
#20
Bryant J Webber, Edward J Wozniak, David Chang, Kelvin N Bush, Matthew C Wilson, James A Watts, Heather C Yun
Between 5 and 8 million people globally are infected with Trypanosoma cruzi, the causative parasitic agent of Chagas disease. The vast majority of incident infections originate in pockets of Latin America where domestic vector-borne transmission cycles are more common. Since 1955, when the first locally-acquired case was reported, fewer than 30 autochthonous cases have been documented in the United States. We describe the case of an 18-year-old US Air Force trainee, a native Texan with no travel history beyond the continental United States, who screened positive for T cruzi infection on blood donation and was subsequently found to have chronic Chagasic cardiomyopathy...
January 2017: U.S. Army Medical Department Journal
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