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https://www.readbyqxmd.com/read/28081070/second-harmonic-generation-via-femtosecond-laser-fabrication-of-poled-quasi-phase-matched-waveguides-in-fused-silica
#1
Jason C Ng, Peter R Herman, Li Qian
Second harmonic generation (SHG) is demonstrated in femtosecond laser written waveguides in fused silica through a combination of thermal poling and laser-based quasi-phase-matching (QPM) techniques. Quasi-phase-matching was controlled by the periodic erasure of induced nonlinearity through femtosecond laser erasure. A maximum SHG conversion efficiency of 6.6±0.5×10<sup>-5</sup>%/W is reported for the fundamental wavelength of 1552.8 nm with a phase-matching bandwidth of 4.4 nm for a 10.0 mm long waveguide...
January 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28081027/physician-burnout-in-physical-medicine-and-rehabilitation-pm-r-should-we-focus-more-on-physiatrists-mission
#2
Julie K Silver, Saurabha Bhatnagar
No abstract text is available yet for this article.
January 9, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28078629/effect-of-microneedle-type-on-transdermal-permeation-of-rizatriptan
#3
Chandrateja Uppuluri, Ashraf Sultana Shaik, Tao Han, Atul Nayak, Karthik J Nair, Benjamin R Whiteside, Buchi N Nalluri, Diganta B Das
The present study was aimed to investigate the effect of salient microneedle (MN) geometry parameters like length, density, shape and type on transdermal permeation of rizatriptan (RIZ). Studies were carried out using two types of MN devices viz. AdminPatch® arrays (ADM) (0.6, 0.9, 1.2 and 1.5 mm lengths) and laboratory-fabricated polymeric MNs (PMs) of 0.6 mm length. In the case of the PMs, arrays were applied three times at different places within a 1.77-cm(2) skin area (PM-3) to maintain the MN density closer to 0...
January 11, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28076306/parallel-diurnal-fluctuation-of-testosterone-androstenedione-dehydroepiandrosterone-and-17ohprogesterone-as-assessed-in-serum-and-saliva-validation-of-a-novel-liquid-chromatography-tandem-mass-spectrometry-method-for-salivary-steroid-profiling
#4
Marco Mezzullo, Alessia Fazzini, Alessandra Gambineri, Guido Di Dalmazi, Roberta Mazza, Carla Pelusi, Valentina Vicennati, Renato Pasquali, Uberto Pagotto, Flaminia Fanelli
BACKGROUND: Salivary androgen testing represents a valuable source of biological information. However, the proper measurement of such low levels is challenging for direct immunoassays, lacking adequate accuracy. In the last few years, many conflicting findings reporting low correlation with the serum counterparts have hampered the clinical application of salivary androgen testing. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) makes it possible to overcome previous analytical limits, providing new insights in endocrinology practice...
January 11, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28063066/high-prevalence-of-undiagnosed-axial-spondyloarthritis-in-patients-with-chronic-low-back-pain-consulting-non-rheumatologist-specialists-in-belgium-suspect-study
#5
Laure Tant, Nadine Delmotte, Maria Van den Enden, Valerie Gangji, Herman Mielants
INTRODUCTION: Diagnosis of axial spondyloarthritis (SpA) can be delayed for several years mainly because of low awareness of axial SpA among non-rheumatologists who are the first interlocutors of potential SpA patients. One strategy to decrease the delay between appearance of first symptoms and diagnosis of axial SpA and to allow early management of the disease is to provide the non-rheumatologists with tools to identify patients requiring prompt referral to rheumatologists. This study was designed to evaluate in a real-world setting whether screening patients with chronic low back pain who consult physical medicine and rehabilitation (PMR) physicians, orthopedists, and ophthalmologists is useful in detecting axial SpA...
January 6, 2017: Rheumatology and Therapy
https://www.readbyqxmd.com/read/28060322/analysis-of-the-ambient-particulate-matter-induced-chromosomal-aberrations-using-an-in-vitro-system
#6
Isabelle R Miousse, Igor Koturbash, Marie-Cécile Chalbot, Martin Hauer-Jensen, Ilias Kavouras, Rupak Pathak
Exposure to particulate matter (PM) is a major world health concern, which may damage various cellular components, including the nuclear genetic material. To assess the impact of PM on nuclear genetic integrity, structural chromosomal aberrations are scored in the metaphase spreads of mouse RAW264.7 macrophage cells. PM is collected from ambient air with a high volume total suspended particles sampler. The collected material is solubilized and filtered to retain the water-soluble, fine portion. The particles are characterized for chemical composition by nuclear magnetic resonance (NMR) spectroscopy...
December 21, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28059307/nonlinear-compensation-with-dbp-aided-by-a-memory-polynomial
#7
João Gonçalves, Celestino S Martins, Fernando P Guiomar, Telmo R Cunha, José C Pedro, Armando N Pinto, Pedro M Lavrador
Using digital backpropagation (DBP) based on the split step Fourier method (SSFM) aided by a memory polynomial (MP) model, we demonstrate an improved DBP approach for fiber nonlinearity compensation. The proposed technique (DBP-SSFM&MP) is numerically validated and its performance and complexity are compared against the benchmark DBP-SSFM, considering a single-channel 336 Gb/s PM-64QAM transmission system. We demonstrate that the proposed technique allows to maintain the performance achieved by DBP-SSFM, while decreasing the required number of iterations, by over 60%...
December 26, 2016: Optics Express
https://www.readbyqxmd.com/read/28057885/essentials-of-physical-medicine-and-rehabilitation-musculoskeletal-disorders-pain-and-rehabilitation
#8
Alan Bray
No abstract text is available yet for this article.
January 2017: Occupational Medicine
https://www.readbyqxmd.com/read/28050905/detailed-analysis-of-criteria-and-particle-emissions-from-a-very-large-crude-carrier-using-a-novel-eca-fuel
#9
Nicholas R Gysel, William A Welch, Kent C Johnson, Wayne Miller, David R Cocker
Ocean going vessels (OGVs) operating within emission control areas (ECA) are required to use fuels with ≤ 0.1 weight percent sulfur. Up to now only distillate fuels could meet the sulfur limits. Recently refiners created a novel low-sulfur heavy-fuel oil (LSHFO) meeting the sulfur limits so questions were posed whether nitric oxide (NOx) and particulate matter (PM) emissions were the same for the two fuels. This project characterized criteria pollutants and undertook a detailed analysis of PM emissions from a very large crude oil carrier (VLCC) using a distillate ECA fuel (MGO) and novel LSHFO...
January 4, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28046527/tu-h-brc-06-temperature-simulation-of-tungsten-and-w25re-targets-to-deliver-high-dose-rate-10-mv-photons
#10
J Wang, S Trovati, B Loo, P Maxim, P Borchard, R Fahrig
PURPOSE: To study the impact of electron beam size, target thickness, and target temperature on the ability of the flattening filter-free mode (FFF) treatment head to deliver high-dose-rate irradiations. METHODS: The dose distribution and transient temperature of the X-ray target under 10 MeV electron beam with pulse length of 5 microseconds, and repetition rate of 1000 Hz was studied. A MCNP model was built to calculate the percentage depth dose (PPD) distribution in a water phantom at a distance of 100 cm...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28045447/investigation-of-indoor-air-quality-in-houses-of-macedonia
#11
Silvia Vilčeková, Ilija Zoran Apostoloski, Ľudmila Mečiarová, Eva Krídlová Burdová, Jozef Kiseľák
People who live in buildings are exposed to harmful effects of indoor air pollution for many years. Therefore, our research is aimed to investigate the indoor air quality in family houses. The measurements of indoor air temperature, relative humidity, total volatile organic compounds (TVOC), particulate matters (PM) and sound pressure level were carried out in 25 houses in several cities of the Republic of Macedonia. Mean values of indoor air temperature and relative humidity ranged from 18.9 °C to 25.6 °C and from 34...
January 1, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28045254/homogeneous-catalysis-under-ultradilute-conditions-taml-naclo-oxidation-of-persistent-metaldehyde
#12
Liang L Tang, Matthew A DeNardo, Christopher J Schuler, Matthew R Mills, Chakicherla Gayathri, Roberto R Gil, Rakesh Kanda, Terrence J Collins
TAML activators enable homogeneous oxidation catalysis where the catalyst and substrate (S) are ultradilute (pM-low μM) and the oxidant is very dilute (high nM-low mM). Water contamination by exceptionally persistent micropollutants (MPs), including metaldehyde (Met), provides an ideal space for determining the characteristics and utilitarian limits of this ultradilute catalysis. The low MP concentrations decrease throughout catalysis with S oxidation (kII) and catalyst inactivation (ki) competing for the active catalyst...
January 3, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28039526/platelet-inhibition-in-shunted-infants-on-aspirin-at-short-and-midterm-follow-up
#13
Dongngan T Truong, Joyce T Johnson, David K Bailly, Jason R Clawson, Xiaoming Sheng, Phillip T Burch, Madolin K Witte, L LuAnn Minich
There are few data to guide aspirin therapy to prevent shunt thrombosis in infants. We aimed to determine if aspirin administered at conventional dosing in shunted infants resulted in ≥50% arachidonic acid (AA) inhibition in short and midterm follow-up using thromboelastography with platelet mapping (TEG-PM) and to describe bleeding and thrombotic events during follow-up. We performed a prospective observational study of infants on aspirin following Norwood procedure, aortopulmonary shunt alone, or cavopulmonary shunt surgery...
December 30, 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/28031546/sunlight-exposure-and-vitamin-d-status-in-breastfed-infants
#14
Pinky Meena, Aashima Dabas, Dheeraj Shah, Rajeev Kumar Malhotra, S V Madhu, Piyush Gupta
OBJECTIVE: To correlate the sunlight exposure in first 6 months to vitamin D status at 6 months of age in predominantly breastfed infants; and to quantify the sunlight exposure required to achieve serum 25(OH)D level > 20 ng/mL, by 6 months of age. DESIGN: Prospective cohort. SETTING: Tertiary care hospital predominantly catering to urban poor population in Delhi. PARTICIPANTS: 132 healthy infants, delivered at term, and predominantly breastfed were enrolled at 6-8 weeks of age...
December 5, 2016: Indian Pediatrics
https://www.readbyqxmd.com/read/28025624/impact-of-a-revised-curriculum-focusing-on-clinical-neurology-and-musculoskeletal-care-on-a-required-fourth-year-medical-student-physical-medicine-and-rehabilitation-clerkship
#15
John W Norbury, Clinton E Faulk, Kelly M Harrell, Luan E Lawson, Daniel P Moore
Background. A Required Fourth-Year Medical Student Physical Medicine and Rehabilitation (PM&R) Clerkship was found to increase students' knowledge of PM&R; however the students' overall rotation evaluations were consistently lower than the other 8 required clerkships at the medical school. Objective. To describe the impact of a revised curriculum based upon Entrustable Professional Activities and focusing on basic pain management, musculoskeletal care, and neurology. Setting. Academic Medical Center. Participants...
2016: Rehabilitation Research and Practice
https://www.readbyqxmd.com/read/28025357/deconstructing-chronic-low-back-pain-in-the-older-adult-step-by-step-evidence-and-expert-based-recommendations-for-evaluation-and-treatment-part-xii-leg-length-discrepancy
#16
Mark Havran, Joel D Scholten, Paula Breuer, Jennifer Lundberg, Gary Kochersberger, Dave Newman, Debra K Weiner
 To present the last in a 12-part series designed to deconstruct chronic low back pain (CLBP) in older adults. This article focuses on leg length discrepancy (LLD) and presents an algorithm outlining approaches to diagnosis and management of LLD in older adults, along with a representative clinical case. METHODS : Using a modified Delphi approach, the LLD evaluation and treatment algorithm was developed by a multidisciplinary expert panel representing expertise in physical therapy, geriatric medicine, and physical medicine and rehabilitation...
December 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28012666/ambient-and-laboratory-evaluation-of-a-low-cost-particulate-matter-sensor
#17
K E Kelly, J Whitaker, A Petty, C Widmer, A Dybwad, D Sleeth, R Martin, A Butterfield
Low-cost, light-scattering-based particulate matter (PM) sensors are becoming more widely available and are being increasingly deployed in ambient and indoor environments because of their low cost and ability to provide high spatial and temporal resolution PM information. Researchers have begun to evaluate some of these sensors under laboratory and environmental conditions. In this study, a low-cost, particulate matter sensor (Plantower PMS 1003/3003) used by a community air-quality network is evaluated in a controlled wind-tunnel environment and in the ambient environment during several winter-time, cold-pool events that are associated with high ambient levels of PM...
February 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28010184/prospective-memory-7-years-after-severe-childhood-traumatic-brain-injury-the-tge-2-prospective-longitudinal-study
#18
Agata Krasny-Pacini, Leila Francillette, Hanna Toure, Dominique Brugel, Anne Laurent-Vannier, Philippe Meyer, Jonathan Evans, Mathilde Chevignard
OBJECTIVE: To investigate the long-term outcome in prospective memory (PM), seven years after childhood severe traumatic brain injury (TBI), in a prospective longitudinal cohort. PARTICIPANTS: 76 young individuals (aged 7-22 years): 39 patients with a severe accidental TBI included prospectively seven years earlier, aged 0-15 years at injury, and 37 controls individually matched on age, gender and parental education. MAIN OUTCOME MEASURES: Three novel short PM tasks varying in the delay, motivation and context (ecological versus paper and pencil task)...
December 23, 2016: Developmental Neurorehabilitation
https://www.readbyqxmd.com/read/28006732/impact-of-secondary-inorganic-aerosol-and-road-traffic-at-a-suburban-air-quality-monitoring-station
#19
L Megido, L Negral, L Castrillón, Y Fernández-Nava, B Suárez-Peña, E Marañón
PM10 from a suburban site in the northwest of Spain was assessed using data from chemical determinations, meteorological parameters, aerosol maps and five-day back trajectories of air masses. Temporal variations in the chemical composition of PM10 were subsequently related to stationary/mobile local sources and long-range transport stemming from Europe and North Africa. The presence of secondary inorganic species (sulphates, nitrates and ammonium) in airborne particulate matter constituted one of the main focuses of this study...
December 19, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/28002504/formation-and-alteration-of-airborne-particles-in-the-subway-environment
#20
T Moreno, X Querol, V Martins, M C Minguillón, C Reche, L H Ku, H R Eun, K H Ahn, M Capdevila, E de Miguel
Most particles in the rail subway environment are sub-micron sized ferruginous flakes and splinters generated mechanically by frictional wear of brake pads, wheels and rails. To better understand the mechanisms of formation and the alteration processes affecting inhalable particles in subways, PM samples (1-2.5 μm and 2.5-10 μm) were collected in the Barcelona Metro and then studied under a scanning electron microscope. Most particles in these samples are hematitic (up to 88%), with relatively minor amounts of mineral matter (up to 9%) and sulphates (up to 5%)...
December 21, 2016: Environmental Science. Processes & Impacts
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