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https://www.readbyqxmd.com/read/29154510/occupational-health-survey-of-cosmetologists-in-minnesota
#1
Kathleen G Norlien, Adrienne Landsteiner, Angeline Carlson
Cosmetologists face a variety of occupational health and safety challenges. To gather information on respiratory issues related to work as a cosmetologist, licensed cosmetologists were invited by e-mail to participate in a short online survey. The survey collected demographic data, work history, respiratory symptoms, product usage, and health and safety training. Results revealed that while 57% of cosmetologists reported having received training on customer or consumer safety, only 10.5% had received training on worker health such as work-related asthma and/or breathing issues...
May 2017: Journal of Environmental Health
https://www.readbyqxmd.com/read/29144160/high-flow-nasal-cannula-oxygen-in-adults-an-evidence-based-assessment
#2
Matthew G Drake
High flow nasal cannula oxygenation has distinct advantages over other oxygen devices due to its unique effects on respiratory physiology. In particular, adjustable oxygen delivery and flow-dependent carbon dioxide clearance from the upper airway reduce work of breathing and can better match inspiratory demand during respiratory distress. Historically, few studies had evaluated whether the physiologic effects of these devices translated into clinical benefit. However, recent publications have begun to address this knowledge gap...
November 16, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29136282/principal-component-reconstruction-pcr-for-cine-cbct-with-motion-learning-from-2d-fluoroscopy
#3
Hao Gao, Yawei Zhang, Lei Ren, Fang-Fang Yin
PURPOSE: This work aims to generate cine CT images (i.e., 4D images with high temporal resolution) based on a novel principal component reconstruction (PCR) technique with motion learning from 2D fluoroscopic training images. METHODS: In the proposed PCR method, the matrix factorization is utilized as an explicit low-rank regularization of 4D images that are represented as a product of spatial principal components and temporal motion coefficients. The key hypothesis of PCR is that temporal coefficients from 4D images can be reasonably approximated by temporal coefficients learned from 2D fluoroscopic training projections...
November 14, 2017: Medical Physics
https://www.readbyqxmd.com/read/29135232/confocal-raman-microscopy-for-the-determination-of-protein-and-quaternary-ammonium-ion-loadings-in-biocatalytic-membranes-for-electrochemical-energy-conversion-and-storage
#4
Rong Cai, Sofiene Abdellaoui, Jay P Kitt, Cullen Irvine, Joel Harris, Shelley D Minteer, Carol Korzeniewski
The need to immobilize active enzyme, while ensuring high rates of substrate turnover and electronic charge transfer with an electrode, is a centrally important challenge in the field of bioelectrocatalysis. In this work, we demonstrate the use of confocal Raman microscopy as a tool for quantitation and molecular-scale structural characterization of ionomers and proteins within biocatalytic membranes to aid in the development of energy efficient biofuel cells. A set of recently available short side chain Aquivion ionomers spanning a range of equivalent weight (EW) suitable for enzyme immobilization was investigated...
November 14, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29133136/comparison-of-the-near-field-far-field-model-and-the-advanced-reach-tool-art-model-v1-5-exposure-estimates-to-benzene-during-parts-washing-with-mineral-spirits
#5
Mallory LeBlanc, Joseph G Allen, Robert F Herrick, James H Stewart
The Advanced Reach Tool V1.5 (ART) is a mathematical model for occupational exposures conceptually based on, but implemented differently than, the "classic" Near Field/Far Field (NF/FF) exposure model. The NF/FF model conceptualizes two distinct exposure "zones"; the near field, within approximately 1m of the breathing zone, and the far field, consisting of the rest of the room in which the exposure occurs. ART has been reported to provide "realistic and reasonable worst case" estimates of the exposure distribution...
October 31, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/29131727/guidelines-for-teaching-yoga-to-women-with-breast-cancer-related-lymphoedema-an-evidence-based-approach
#6
Annette Loudon, Tony Barnett, Andrew D Williams, Denis Visentin, Maarten A Immink, Neil Piller
Breast cancer-related lymphoedema (BCRL) is a chronic condition that requires lifelong management to prevent the condition worsening and to reduce the threat of infection. Women are affected in all domains of their life. As a holistic practice, yoga may be of benefit by reducing both the physical and psychosocial effects of lymphoedema. Women with BCRL are attending yoga classes in increasing numbers, so it is essential that yoga be based on principles that ensure lymphoedema is controlled and not exacerbated...
November 2017: International Journal of Yoga Therapy
https://www.readbyqxmd.com/read/29127768/diabetic-ketoacidosis-hyperuricemia-and-encephalopathy-intractable-to-regular-dose-insulin
#7
Jillian Gregory, Sonali Basu
BACKGROUND: Diabetic ketoacidosis (DKA) in children less than 1 year of age is a rare occurrence. Typical presentation includes a prodrome of weight loss and polyuria with subsequent presentation to medical care when acidosis becomes symptomatic. CASE PRESENTATION: We describe an unusual case of a previously healthy infant with a 3 days' history of constipation, presenting acutely with abdominal pain, lethargy, and dehydration. On initial evaluation, our patient had profound encephalopathy, with marked tachypnea and work of breathing...
November 11, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/29126085/fatty-acid-binding-protein-genes-of-the-ancient-air-breathing-ray-finned-fish-spotted-gar-lepisosteus-oculatus
#8
Ananda B Venkatachalam, Quenton Fontenot, Allyse Farrara, Jonathan M Wright
With the advent of high-throughput DNA sequencing technology, the genomic sequence of many disparate species has led to the relatively new discipline of genomics, the study of genome structure, function and evolution. Much work has been focused on the role of whole genome duplications (WGD) in the architecture of extant vertebrate genomes, particularly those of teleost fishes which underwent a WGD early in the teleost radiation >230 million years ago (mya). Our past work has focused on the fate of duplicated copies of a multigene family coding for the intracellular lipid-binding protein (iLBP) genes in the teleost fishes...
October 13, 2017: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/29125380/breathing-pattern-recordings-using-respiratory-inductive-plethysmography-before-and-after-a-physiotherapy-breathing-retraining-program-for-asthma-a-case-report
#9
Rokhsaneh Tehrany, Ruth DeVos, Anne Bruton
Breathing retraining (BR) improves symptoms, psychological well-being and quality of life in adults with asthma; but there remains uncertainty as to mechanism of effect. One of the intuitively logical theories is that BR works through altering breathing pattern. There is currently no evidence, however, that BR does result in measurable changes in breathing pattern. In this case report we describe the effects of physiotherapy BR on a 57-year-old female with a 10-year history of asthma. Data were collected before and after a physiotherapy BR program comprising three sessions over 18 weeks: breathing pattern (respiratory inductive plethysmography (RIP); physiology (end tidal carbon dioxide (ETCO2), heart rate, oxygen saturations, spirometric lung function); questionnaires (Asthma Control Questionnaire (ACQ), Hospital Anxiety and Depression Score, Nijmegen Questionnaire); and medication usage...
November 10, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29124925/organic-gas-sensor-with-an-improved-lifetime-for-detecting-breath-ammonia-in-hemodialysis-patients
#10
Ming-Yen Chuang, Chang-Chiang Chen, Hsiao-Wen Zan, Hsin-Fei Meng, Chia-Jung Lu
In this work, a TFB (poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(4,4'-(N-(4-s-butylphenyl)diphenylamine)]) sensor with a cylindrical nanopore structure exhibits a high sensitivity to ammonia in ppb-regime. The lifetime and sensitivity of the TFB sensor were studied and compared to those of P3HT (poly(3-hexylthiophene)), NPB (N,N'-di(1-naphthyl)-N,N'-diphenyl-(1,1'-biphenyl)-4,4'-diamine), and TAPC (4,4'-cyclohexylidenebis[N,N-bis(4-methylphenyl) benzenamine]) sensors with the same cylindrical nanopore structures...
November 17, 2017: ACS Sensors
https://www.readbyqxmd.com/read/29123563/the-lives-and-works-of-john-cheyne-1777-1836-and-william-stokes-1804-1878
#11
Alexander Fletcher, Dominic Moor
Cheyne-Stokes respiration - an abnormal pattern of breathing, oscillating between hyperventilation and apnoea - was first described in the 19th century by Dr John Cheyne and Dr William Stokes. Although primarily known for this condition, both men contributed a lot more to the understanding and practice of medicine than this eponym.
November 2017: J Intensive Care Soc
https://www.readbyqxmd.com/read/29123562/the-role-of-occupational-and-physiotherapy-in-multi-modal-approach-to-tackling-delirium-in-the-intensive-care
#12
REVIEW
Jenny Rains, Nigel Chee
The presence of delirium within critical care remains a long-standing challenge for patients and clinicians alike. A myriad of pre-disposing and precipitating factors lead to this patient cohort being high risk for developing delirium during their critical care stay. Until now, non-pharmacological management of these patients usually encompasses a 'bundle' of principles to reduce delirium days. These bundles have limited focus on the entire multi-disciplinary team (including occupational therapists and physiotherapists) who could assist with the reduction of delirium...
November 2017: J Intensive Care Soc
https://www.readbyqxmd.com/read/29120163/tunable-synthesis-of-yolk-shell-porous-silicon-carbon-for-optimizing-si-c-based-anode-of-lithium-ion-batteries
#13
Sichang Guo, Xiang Hu, Yang Hou, Zhenhai Wen
Significant "breathing effect" calls for exploring efficient strategies to address the intrinsic issues of silicon anode of lithium-ion batteries (LIBs). We here report a controllable synthetic route to fabricate the silicon-carbon hybrids, in which porous silicon nanoparticles (p-SiNPs) are loaded in void carbon spheres by forming the yolk-shell p-SiNPs@hollow carbon (HC) nanohybrids tunable. A set of controlled experiments accompanying with systematic characterizations demonstrate that the void space and mass loading of Si can be adjusted in an effective way so that the nanostructure can be optimized with achieving improved electrochemical performance as anode of lithium-ion batteries (LIBs)...
November 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29116412/fabrication-of-flexible-thin-polyurethane-membrane-for-tissue-engineering-applications
#14
A Arefin, J-H Huang, D Platts, V D Hypes, J F Harris, R Iyer, P Nath
Thin and flexible polymeric membranes play a critical role in tissue engineering applications for example organs-on-a-chip. These flexible membranes can enable mechanical stretch of the engineered tissue to mimic organ-specific biophysical features, such as breathing. In this work, we report the fabrication of thin (<20 μm), stretchable, and biocompatible polyurethane (PU) membranes. The membranes were fabricated using spin coating technique on silicon substrates and were mounted on a frame for ease of device integration and handling...
November 7, 2017: Biomedical Microdevices
https://www.readbyqxmd.com/read/29115912/hyperoxia-for-performance-and-training
#15
D A Cardinale, B Ekblom
Recent technological developments have made it possible to use hyperoxia as an enhancement aid during training. Athletes wearing a mask can breathe a higher fraction of oxygen from a stationary or portable apparatus while exercising. A large body of evidence indicates that the oxygen transport capacity, lactate metabolism, power output and work tolerance (endurance) are improved when breathing hyperoxia. The physiological mechanisms underlying these performance improvements, although still not fully elucidated, are based on higher oxygen delivery and reduced central fatigue...
November 8, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29114620/reducing-radiation-dose-and-enhancing-imaging-quality-of-4dct-for-radiation-therapy-using-iterative-reconstruction-algorithms
#16
George Noid, An Tai, Guang-Pei Chen, Jared Robbins, X Allen Li
Purpose: Four-dimensional computed tomography (CT) images are typically used to quantify the necessary internal target volumes for thoracic and abdominal tumors. However, 4-dimensional CT is typically associated with excessive imaging dose to patients and the situation is exacerbated when using repeat 4-dimensional CT imaging on a weekly or daily basis throughout fractionated therapy. The aim of this work is to evaluate an iterative reconstruction (IR) algorithm that helps reduce the imaging dose to the patient while maintaining imaging quality as quantified by point spread function and contrast-to-noise ratios (CNRs)...
July 2017: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/29110717/bayesian-intravoxel-incoherent-motion-parameter-mapping-in-the-human-heart
#17
Georg R Spinner, Constantin von Deuster, Kerem C Tezcan, Christian T Stoeck, Sebastian Kozerke
BACKGROUND: Intravoxel incoherent motion (IVIM) imaging of diffusion and perfusion in the heart suffers from high parameter estimation error. The purpose of this work is to improve cardiac IVIM parameter mapping using Bayesian inference. METHODS: A second-order motion-compensated diffusion weighted spin-echo sequence with navigator-based slice tracking was implemented to collect cardiac IVIM data in early systole in eight healthy subjects on a clinical 1.5 T CMR system...
November 6, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29109195/sleep-apnea-and-cardiovascular-disease-lessons-from-recent-trials-and-need-for-team-science
#18
REVIEW
Luciano F Drager, R Doug McEvoy, Ferran Barbe, Geraldo Lorenzi-Filho, Susan Redline
Emerging research highlights the complex interrelationships between sleep-disordered breathing and cardiovascular disease, presenting clinical and research opportunities as well as challenges. Patients presenting to cardiology clinics have a high prevalence of obstructive and central sleep apnea associated with Cheyne-Stokes respiration. Multiple mechanisms have been identified by which sleep disturbances adversely affect cardiovascular structure and function. Epidemiological research indicates that obstructive sleep apnea is associated with increases in the incidence and progression of coronary heart disease, heart failure, stroke, and atrial fibrillation...
November 7, 2017: Circulation
https://www.readbyqxmd.com/read/29106739/evaluation-of-tomotherapy-dose-calculations-with-intra-fractional-motion-and-motion-compensation
#19
Edward H Chao, Daniel Lucas, Eric Schnarr
PURPOSE: Anatomical motion, both cyclical and aperiodic, can impact the dose delivered during external beam radiation. In this work, we evaluate the use of a research version of the clinical TomoTherapy(®) dose calculator to calculate dose with intra-fraction rigid motion. We also evaluate the feasibility of a method of motion compensation for helical tomotherapy using the jaws and MLC. METHODS: Treatment plans were created using the TomoTherapy treatment planning system...
November 6, 2017: Medical Physics
https://www.readbyqxmd.com/read/29105167/directed-self-assembly-in-breath-figure-templating-of-melamine-based-amphiphilic-copolymers-effect-of-hydrophilic-length-end-chain-on-honeycomb-film-formation-and-wetting
#20
Laurent Billon, Hongyao Yin, Yujun Feng
Amphiphilic copolymers are widely used in fabricating hierarchically honeycomb-structured films via "breath figure" (BF) process as the hydrophilic block plays a key role in stabilizing water templating. However, the hydrophilic blocks reported are mainly confined to acrylic acid and its derivatives, the additional functions introduction on porous films, and the polymer composition/film microstructure relationship was less documented. In this work, a novel melamine-based hydrophilic moiety was incorporated to polystyrene chains by combining atom transfer radical polymerization and post modification to afford end-functionalized polystyrenes (PS-PANME)...
November 4, 2017: Chemistry: a European Journal
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