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https://www.readbyqxmd.com/read/27906783/evaluation-of-the-potential-optical-radiation-hazards-with-led-lamps-intended-for-home-use
#1
Robert H James, Robert J Landry, Bennett N Walker, Ilko K Ilev
The authors evaluated the potential for ocular damage from optical radiation emitted by Light Emitting Diode (LED) based lamps used for general illumination. Ten LED lamps were randomly selected off the shelf from a local home improvement store. The LEDs were behind diffusers in half of these lamps, while in the other half, the LEDs were clearly visible. In addition, a battery powered LED lantern having a LED source behind a diffuser was measured. The optical radiation emissions from two common incandescent lamps were also measured to compare the relative hazards of LED and incandescent lamps...
January 2017: Health Physics
https://www.readbyqxmd.com/read/27903485/endovascular-repair-of-thoraco-abdominal-aortic-aneurysm-in-high-surgical-risk-patients-fenestrated-and-branched-endografts
#2
E Gallitto, M Gargiulo, A Freyrie, C Bianchini Massoni, R Pini, C Mascoli, G L Faggioli, S Ancetti, A Stella
AIM: To report early and mid-term results of endovascular repair of thoraco-abdominal aneurysms (TAAA) by using of Cook-Zenith fenestrated/branched endografts (FB-EVAR) in high-surgical risk patients unfit for open repair (OR). METHODS: Between January 2012 and April 2015, all the patients with TAAA, considered at high-surgical risk for OR and treated by Cook-Zenith FB-EVAR, were prospectively enrolled. Patients were studied using a thoraco-abdominal computer tomography angiography (CTA) and dedicated software for advanced vessels analysis...
November 26, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27879687/images-from-bits-non-iterative-image-reconstruction-for-quanta-image-sensors
#3
Stanley H Chan, Omar A Elgendy, Xiran Wang
A quanta image sensor (QIS) is a class of single-photon imaging devices that measure light intensity using oversampled binary observations. Because of the stochastic nature of the photon arrivals, data acquired by QIS is a massive stream of random binary bits. The goal of image reconstruction is to recover the underlying image from these bits. In this paper, we present a non-iterative image reconstruction algorithm for QIS. Unlike existing reconstruction methods that formulate the problem from an optimization perspective, the new algorithm directly recovers the images through a pair of nonlinear transformations and an off-the-shelf image denoising algorithm...
November 22, 2016: Sensors
https://www.readbyqxmd.com/read/27872012/biomimetic-collagen-elastin-meshes-for-ventral-hernia-repair-in-a-rat-model
#4
Silvia Minardi, Francesca Taraballi, Xin Wang, Fernando J Cabrera, Jeffrey L Van Eps, Andrew B Robbins, Monica Sandri, Michael R Moreno, Bradley K Weiner, Ennio Tasciotti
: Ventral hernia repair remains a major clinical need. Herein, we formulated a type I collagen/elastin crosslinked blend (CollE) for the fabrication of biomimetic meshes for ventral hernia repair. To evaluate the effect of architecture on the performance of the implants, CollE was formulated both as flat sheets (CollE Sheets) and porous scaffolds (CollE Scaffolds). The morphology, hydrophylicity and in vitro degradation were assessed by SEM, water contact angle and differential scanning calorimetry, respectively...
November 18, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27856021/interdisciplinary-development-of-an-improved-emergency-department-procedural-work-surface-through-iterative-design-and-use-testing-in-simulated-and-clinical-environments
#5
Xiao C Zhang, Ana M Bermudez, Pranav M Reddy, Ravi R Sarpatwari, Darin B Chheng, Taylor J Mezoian, Victoria R Schwartz, Quinneil J Simmons, Gregory D Jay, Leo Kobayashi
STUDY OBJECTIVE: A stable and readily accessible work surface for bedside medical procedures represents a valuable tool for acute care providers. In emergency department (ED) settings, the design and implementation of traditional Mayo stands and related surface devices often limit their availability, portability, and usability, which can lead to suboptimal clinical practice conditions that may affect the safe and effective performance of medical procedures and delivery of patient care...
November 14, 2016: Annals of Emergency Medicine
https://www.readbyqxmd.com/read/27828848/lateral-shelf-acetabuloplasty-for-severe-legg-calv%C3%A3-perthes-disease-in-patients-older-than-8-years-a-mean-eleven-year-follow-up
#6
Wen-Chao Li, Rui-Jiang Xu
The natural history of Legg-Calvé-Perthes disease (LCPD) in children older than 8 years is usually poor without treatment. The treatment goal is to prevent deformity and incongruity of the hip by achieving a stable spherical femoral head in a deep, congruent, sharp-edged acetabulum, with a good range of hip movement at skeletal maturity. Lateral shelf acetabuloplasty in LCPD can increase the coverage of the femoral head, benefiting the remodeling of the femoral head and acetabulum. The aim of this study was to evaluate the efficacy of lateral shelf acetabuloplasty for severe LCPD in patients older than 8 years...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27765254/dairy-products-and-the-maillard-reaction-a-promising-future-for-extensive-food-characterization-by-integrated-proteomics-studies
#7
Simona Arena, Giovanni Renzone, Chiara D'Ambrosio, Anna Maria Salzano, Andrea Scaloni
Heating of milk and dairy products is done using various technological processes with the aim of preserving microbiological safety and extending shelf-life. These treatments result in chemical modifications in milk proteins, mainly generated as a result of the Maillard reaction. Recently, different bottom-up proteomic methods have been applied to characterize the nature of these structural changes and the modified amino acids in model protein systems and/or isolated components from thermally-treated milk samples...
March 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27706094/3d-printed-dry-eeg-electrodes
#8
Sammy Krachunov, Alexander J Casson
Electroencephalography (EEG) is a procedure that records brain activity in a non-invasive manner. The cost and size of EEG devices has decreased in recent years, facilitating a growing interest in wearable EEG that can be used out-of-the-lab for a wide range of applications, from epilepsy diagnosis, to stroke rehabilitation, to Brain-Computer Interfaces (BCI). A major obstacle for these emerging applications is the wet electrodes, which are used as part of the EEG setup. These electrodes are attached to the human scalp using a conductive gel, which can be uncomfortable to the subject, causes skin irritation, and some gels have poor long-term stability...
October 2, 2016: Sensors
https://www.readbyqxmd.com/read/27687323/midterm-results-from-a-physician-sponsored-investigational-device-exemption-clinical-trial-evaluating-physician-modified-endovascular-grafts-for-the-treatment-of-juxtarenal-aortic-aneurysms
#9
Benjamin W Starnes, Rachel E Heneghan, Billi Tatum
OBJECTIVE: The objective of this study was to report midterm results of an ongoing physician-sponsored investigational device exemption pivotal clinical trial using physician-modified endovascular grafts (PMEGs) for treatment of patients with juxtarenal aortic aneurysms who are deemed unfit for open repair. METHODS: Data from a nonrandomized, prospective, consecutively enrolling investigational device exemption clinical trial were used. Data collection began on April 1, 2011, and data lock occurred on May 31, 2015, with outcomes analysis through December 31, 2015...
September 26, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27638709/long-term-results-of-a-modified-spitzy-shelf-operation-for-residual-hip-dysplasia-and-subluxation-a-fifty-year-follow-up-study-of-fifty%C3%A2-six-children-and-young-adults
#10
Anne Guro Vreim Holm, Olav Reikerås, Terje Terjesen
PURPOSE: The purposes of this study were to establish long-term outcome of the Spitzy shelf-operation and evaluate whether the procedure would delay osteoarthritis. METHODS: During 1954-1976, 56 patients (70 hips) underwent Spitzy shelf operation at a mean age of 11.9 years (5 to 22). Indications included residual hip dysplasia or subluxation with Centre-Edge angle < 20°. We used survival analysis with conversion to total hip replacements as end-point. For patients without total hip replacement, information was provided from case records and radiographs...
September 16, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27629238/graphene-perovskite-solar-cells-exceed-18%C3%A2-efficiency-a-stability-study
#11
Antonio Agresti, Sara Pescetelli, Babak Taheri, Antonio Esaù Del Rio Castillo, Lucio Cinà, Francesco Bonaccorso, Aldo Di Carlo
Interface engineering is performed by the addition of graphene and related 2 D materials (GRMs) into perovskite solar cells (PSCs), leading to improvements in the power conversion efficiency (PCE). By doping the mesoporous TiO2 layer with graphene flakes (mTiO2 +G), produced by liquid-phase exfoliation of pristine graphite, and by inserting graphene oxide (GO) as an interlayer between the perovskite and hole-transport layers, using a two-step deposition procedure in air, we achieved a PCE of 18.2 %. The obtained PCE value mainly results from improved charge-carrier injection/collection with respect to conventional PSCs...
September 22, 2016: ChemSusChem
https://www.readbyqxmd.com/read/27567251/a-signal-amplified-electrochemical-dna-biosensor-incorporated-with-a-colorimetric-internal-control-for-vibrio-cholerae-detection-using-shelf-ready-reagents
#12
Kim-Fatt Low, Zainiharyati Mohd Zain, Chan Yean Yean
A novel enzyme/nanoparticle-based DNA biosensing platform with dual colorimetric/electrochemical approach has been developed for the sequence-specific detection of the bacterium Vibrio cholerae, the causative agent of acute diarrheal disease in cholera. This assay platform exploits the use of shelf-stable and ready-to-use (shelf-ready) reagents to greatly simplify the bioanalysis procedures, allowing the assay platform to be more amenable to point-of-care applications. To assure maximum diagnosis reliability, an internal control (IC) capable of providing instant validation of results was incorporated into the assay...
August 20, 2016: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/27540371/the-biotechnology-of-ugba-a-nigerian-traditional-fermented-food-condiment
#13
REVIEW
Nurudeen A Olasupo, Chimezie P Okorie, Folarin A Oguntoyinbo
Legumes and oil bean seeds used for the production of condiments in Africa are inedible in their natural state; they contain some anti-nutritional factors especially undigestible oligosaccharides and phytate. Fermentation impact desirable changes by reducing anti-nutritional factors and increasing digestibility. Ugba is an alkaline fermented African oil bean cotyledon (Pentaclethra macrophylla) produced by the Ibos and other ethnic groups in southern Nigeria. Seen as a family business in many homes, its preparation is in accordance with handed-down tradition from previous generations and serves as a cheap source of plant protein...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27509501/implementation-and-analysis-of-ism-2-4-ghz-wireless-sensor-network-systems-in-judo-training-venues
#14
Peio Lopez-Iturri, Erik Aguirre, Leyre Azpilicueta, José Javier Astrain, Jesús Villadangos, Francisco Falcone
In this work, the performance of ISM 2.4 GHz Wireless Sensor Networks (WSNs) deployed in judo training venues is analyzed. Judo is a very popular martial art, which is practiced by thousands of people not only at the competition level, but also as part of physical education programs at different school levels. There is a great variety of judo training venues, and each one has specific morphological aspects, making them unique scenarios in terms of radio propagation due to the presence of furniture, columns, equipment and the presence of human beings, which is a major issue as the person density within this kind of scenarios could be high...
2016: Sensors
https://www.readbyqxmd.com/read/27484849/tin-nanoparticles-as-an-effective-conductive-additive-in-silicon-anodes
#15
L Zhong, C Beaudette, J Guo, K Bozhilov, L Mangolini
We have found that the addition of tin nanoparticles to a silicon-based anode provides dramatic improvements in performance in terms of both charge capacity and cycling stability. Using a simple procedure and off-the-shelf additives and precursors, we developed a structure in which the tin nanoparticles are segregated at the interface between the silicon-containing active layer and the solid electrolyte interface. Even a minor addition of tin, as small as ∼2% by weight, results in a significant decrease in the anode resistance, as confirmed by electrochemical impedance spectroscopy...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27484076/-positions-of-sustentacular-screw-in-osteosynthesis-of-calcaneal-fractures-clinical-and-radiographic-study
#16
J Pazour, M Křivohlávek, R Lukáš
UNLABELLED: PURPOSE OF THE STUDY The aim of the study was to analyse the options for sustentacular screw placement in osteosynthesis of intra-articular fractures of the heel bone and to assess the effect of various screw positions on failure to maintain the reduction in the postoperative period. In addition, problems related to screw-end protrusion over the medial cortical bone or to screw penetration into the talocalcaneal joint were assessed. MATERIAL AND METHODS The group comprised 23 patients with a total of 25 intra-articular fractures of the heel bone treated by surgery...
2016: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/27457286/multiresidual-lc-ms-analysis-of-plasticizers-used-in-pvc-gaskets-of-lids-and-assessment-of-their-migration-into-food-sauces
#17
F Lambertini, D Catellani, M Vindigni, M Suman
Plasticizers may migrate from polyvinyl chloride (PVC) gaskets into the foodstuffs mainly by direct contact during the packaging and sterilization procedure, but also by means of occasional contacts occurring during shipment and storage. The present work reports a reliable liquid chromatography-mass spectrometry (LC-MS) method able to quantify the main plasticizers used in the PVC closure gaskets for metal lids to verify their compliance in both food contact materials and foodstuffs. The atmospheric pressure chemical ionization in the positive ion mode resulted the best performing interface for the multiresidual detection of the plasticizers taken into account, followed by selected/multiple reaction monitoring, selected ion monitoring or full scan experiments, depending on the compounds to detect...
September 2016: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/27434171/multianalyte-antibiotic-detection-on-an-electrochemical-microfluidic-platform
#18
André Kling, Claire Chatelle, Lucas Armbrecht, Edvina Qelibari, Jochen Kieninger, Can Dincer, Wilfried Weber, Gerald Urban
The excessive use of antibiotics in human and veterinary medicine causes the emergence of multidrug resistant bacteria. In this context, the surveillance of many different antibiotics provokes a worldwide challenge. Hence, fast and versatile multianalyte single-use biosensors are of increasing interest for many fields such as medical analysis or environmental and food control. Here we present a microfluidic platform enabling the electrochemical readout of up to eight enzyme-linked assays (ELAs), simultaneously...
October 18, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/27376059/submillimeter-diameter-poly-vinyl-alcohol-vascular-graft-patency-in-rabbit-model
#19
Marie F A Cutiongco, Marek Kukumberg, Jonnathan L Peneyra, Matthew S Yeo, Jia Y Yao, Abdul Jalil Rufaihah, Catherine Le Visage, Jackie Pei Ho, Evelyn K F Yim
Microvascular surgery is becoming a prevalent surgical practice. Replantation, hand reconstruction, orthopedic, and free tissue transfer procedures all rely on microvascular surgery for the repair of venous and arterial defects at the millimeter and submillimeter levels. Often, a vascular graft is required for the procedure as a means to bridge the gap between native arteries. While autologous vessels are desired for their bioactivity and non-thrombogenicity, the tedious harvest process, lack of availability, and caliber or mechanical mismatch contribute to graft failure...
2016: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/27357042/alternative-antimicrobial-commercial-egg-washing-procedures
#20
Lauren K Hudson, Mark A Harrison, Mark E Berrang, Deana R Jones
Commercial table eggs are washed prior to packaging. Standard wash procedures use an alkaline pH and warm water. If a cool water method could be developed that would still provide a microbiologically safe egg, the industry may save energy costs associated with water heating. Four wash procedures were evaluated for Salmonella reduction: pH 11 at 48.9°C (industry standard), pH 11 at ambient temperature (∼20°C), pH 6 at 48.9°C, and pH 6 at ambient temperature. Alkaline washes contained potassium hydroxide-based detergent, while pH 6 washes contained approximately 200 ppm of chlorine and a proprietary chlorine stabilizer (T-128)...
July 2016: Journal of Food Protection
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