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https://www.readbyqxmd.com/read/28345856/instantaneous-pulsed-light-cross-linking-of-a-polymer-gate-dielectric-for-flexible-organic-thin-film-transistors
#1
Soo Jin Kim, Mi Jang, Hee Yeon Yang, Jinhan Cho, Ho Sun Lim, Hoichang Yang, Jung Ah Lim
We report the instantaneous pulsed-light cross-linking of polymer gate dielectrics on a flexible substrate by using intensely pulsed white light (IPWL) irradiation. Irradiation with IPWL for only 1.8 s of a poly(4-vinylphenol) (PVP) thin film with the cross-linking agent poly(melamine-co-formaldehyde) (PMF) deposited on a plastic substrate was found to yield fully cross-linked PVP films. It was confirmed that the IPWL-cross-linked PVP films have smooth pinhole-free surfaces and exhibit a low leakage current density, organic solvent resistance, and good compatibility with organic semiconductor, and that they can be used as replacements for typical PVP dielectrics that are cross-linked with time and energy intensive thermal heating processes...
March 27, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28345788/horticultural-activity-predicts-later-localized-limb-status-in-a-contemporary-pre-industrial-population
#2
Jonathan Stieglitz, Benjamin C Trumble, Hillard Kaplan, Michael Gurven
OBJECTIVES: Modern humans may have gracile skeletons due to low physical activity levels and mechanical loading. Tests using pre-historic skeletons are limited by the inability to assess behavior directly, while modern industrialized societies possess few socio-ecological features typical of human evolutionary history. Among Tsimane forager-horticulturalists, we test whether greater activity levels and, thus, increased loading earlier in life are associated with greater later-life bone status and diminished age-related bone loss...
March 27, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28345441/prevalence-and-cost-of-subsequent-fractures-among-u-s-patients-with-an-incident-fracture
#3
Jessica Weaver, Shiva Sajjan, E Michael Lewiecki, Steven T Harris, Panagiotis Marvos
BACKGROUND: The prevalence and cost of subsequent fractures among patients with an incident fracture are not well defined. OBJECTIVE: To assess the prevalence of, and costs associated with, subsequent fractures in the year after an incident fracture. METHODS: This was a retrospective claims database analysis using data from Humana Medicare Advantage claims (Medicare group) and Optum Insight Clinformatics Data Mart commercial claims (commercial group)...
April 2017: Journal of Managed Care & Specialty Pharmacy
https://www.readbyqxmd.com/read/28345405/thickness-distribution-of-glenohumeral-joint-cartilage
#4
Christoph Schleich, Bernd Bittersohl, Gerald Antoch, Rüdiger Krauspe, Christoph Zilkens, Jörn Kircher
High-resolution 3-dimensional cartilage-specific magnetic resonance imaging (MRI) was performed at 3 T to test the following hypotheses: (1) there is a nonuniform cartilage thickness distribution both on the proximal humerus and on the glenoid surface and (2) the glenohumeral joint as a combined system is congruent with the level of the joint cartilage surface without substantial radial mismatch. Inclusion of 38 volunteers (19 females, mean age 24.34 ± 2.22 years; range 21-29 years) in a prospective study...
April 2017: Cartilage
https://www.readbyqxmd.com/read/28344525/mri-correlation-of-radial-head-fractures-and-forearm-injuries
#5
Hisham Awan, Robert Goitz
Background: Radial head fractures can be associated with soft tissue injuries of the forearm and wrist. The Essex-Lopresti injury can lead to significant morbidity, especially if the diagnosis is not made acutely. Better identification of such injuries is needed to allow optimal surgical treatment and prevent long-term sequelae. We used magnetic resonance imaging (MRI) to correlate the degree of soft tissue injuries with radial head fractures. Methods: Sixteen pairs of forearms with an associated radial head fracture in 15 patients prospectively underwent an MRI within 2 weeks of their injury...
March 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28342739/supervised-physical-therapy-vs-home-exercise-program-for-patients-with-distal-radius-fracture-a-single-blind-randomized-clinical-study
#6
Héctor Gutiérrez-Espinoza, David Rubio-Oyarzún, Cristian Olguín-Huerta, Rodrigo Gutiérrez-Monclus, Sebastian Pinto-Concha, Gonzalo Gana-Hervias
STUDY DESIGN: Randomized clinical study. INTRODUCTION: Supervised physical therapy (PT) and home exercise programs (HEPs) are frequently used in the rehabilitation of patients with distal radius fracture (DRF). However, there is no consensus as to whether unsupervised HEP provides comparable benefits to those achieved by supervised PT. PURPOSE OF THE STUDY: To compare the improvements in pain and functional status between a supervised PT program and unsupervised HEP in DRF patients older than 60 years...
March 22, 2017: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/28342696/measurement-of-change-on-medial-and-lateral-joint-gaps-by-navigation-system-in-multi-radius-ps-tka
#7
Yeesuk Kim, Jin Kyu Lee, Kyu-Sung Chung, Doo-Yeon Lee, Choong Hyeok Choi
BACKGROUND: The purpose of this study was to evaluate the joint gap kinematics in posterior-stabilized total knee arthroplasty (PS TKA). METHODS: Between January 2010 and April 2011, 44 consecutive patients (55 knees) who underwent primary PS TKA using the navigation system were assessed. There were 37 women and 7 men with a mean age at operation of 63 years (range; 58-73 years). After fixation of all components with cement and insertion of polyethylene trial insert, medial and lateral joint gap measurements were carried out without distraction force and separately using a navigation system on each flexion angles...
March 22, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28342168/bone-mass-in-boys-with-autism-spectrum-disorder
#8
Chadi A Calarge, Janet A Schlechte
To examine bone mass in children and adolescents with autism spectrum disorders (ASD). Risperidone-treated 5 to 17 year-old males underwent anthropometric and bone measurements, using dual-energy X-ray absorptiometry and peripheral quantitative computed tomography. Multivariable linear regression analysis models examined whether skeletal outcomes differed among participants with (n = 30) versus without ASD (n = 156). After adjusting for potential covariates, having ASD was associated with significantly lower trabecular bone mineral density and bone strength at the radius, and with marginally lower total body less head bone mineral content (p < 0...
March 25, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28341899/cortical-microstructure-compensates-for-smaller-bone-size-in-young-caribbean-hispanic-versus-non-hispanic-white-men
#9
M D Walker, A Kepley, K Nishiyama, B Zhou, E Guo, T L Nickolas
Hispanic men have smaller bone size but thicker and denser cortices compared to white men, leading to similar mechanical competence. INTRODUCTION: The purpose of this study was to assess differences in vBMD and microarchitecture in young Caribbean Hispanic (n = 30) and non-Hispanic Caucasian (n = 30) men. METHODS: We measured areal bone mineral density (aBMD) at the spine, total hip (TH), femoral neck (FN), and forearm by dual-energy X-ray absorptiometry (DXA) and bone geometry, mass, microarchitecture, and mechanical competence by high-resolution peripheral quantitative computed tomography (HRpQCT), individual trabecula segmentation (ITS), and finite element analysis (FEA)...
March 24, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28340777/taylor-dispersion-analysis-resonant-mass-measurement-and-bioactivity-of-pepsin-coated-gold-nanoparticles
#10
Markus Höldrich, Siyao Liu, Markus Epe, Michael Lämmerhofer
Immobilized enzyme reactors based on nanoparticulate carriers are becoming increasingly popular. A toolbox of methods is usually utilized for their characterization in order to be capable of assessing their suitability for the intended purpose. In this work, as a model system pepsin was conjugated to gold nanoparticles (GNPs) by a straightforward adsorptive immobilization process. The success of the immobilization procedure was monitored by Vis spectroscopy via shifts of the localized surface plasmon resonance (LSPR) band, size characterization by dynamic light scattering (DLS), and ζ-potential determinations by electrophoretic light scattering...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28340391/optimization-of-the-marinelli-beaker-dimensions-using-genetic-algorithm
#11
Seyed Mehrdad Zamzamian, Seyed Abolfazl Hosseini, Mohammad Samadfam
A computational code, based on the genetic algorithm and MCNPX version 2.6 code was developed and used to investigate the effects of some important parameters of HPGe detector (such as Al cap thickness, dead-layer thickness and Ge hole size) on optimum dimensions of marinelli beaker. In addition, the effects of detector material on optimal beaker dimensions were also investigated. Finally, the optimized beaker dimensions at various beaker volumes (300, 500, 700, 1000 and 1500 cm(3)) were determined for some conventional Ge detectors with different crystal sizes (16 sizes)...
March 21, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28340130/falling-down-on-the-job-evaluation-and-treatment-of-fall-risk-among-older-adults-with-upper-extremity-fragility-fractures
#12
Christine M McDonough, Carrie H Colla, Donald Carmichael, Anna N A Tosteson, Tor D Tosteson, John-Erik Bell, Robert V Cantu, Jonathan D Lurie, Julie P W Bynum
Background: Clinical practice guidelines recommend fall risk assessment and intervention for older adults who sustain a fall-related injury to prevent future injury and mobility decline. Objective: To describe how often Medicare beneficiaries with upper extremity fracture receive evaluation and treatment for fall risk. Design: Observational cohort. Methods Subjects: Fee-for-service beneficiaries age 66 to 99 treated as outpatients for proximal humerus or distal radius/ulna ("wrist") fragility fractures were studied using Carrier and Outpatient Hospital files...
March 2, 2017: Physical Therapy
https://www.readbyqxmd.com/read/28339686/movement-patterns-in-women-at-risk-for-perinatal-depression-use-of-a-mood-monitoring-mobile-application-in-pregnancy
#13
Laura J Faherty, Liisa Hantsoo, Dina Appleby, Mary D Sammel, Ian M Bennett, Douglas J Wiebe
Objectives: To examine, using a smartphone application, whether mood is related to daily movement patterns in pregnant women at risk for perinatal depression. Materials and Methods: Thirty-six women with elevated depression symptoms (PHQ-9 ≥ 5) in pregnancy used the application for 8 weeks. Mood was reported using application-administered surveys daily (2 questions) and weekly (PHQ-9 and GAD-7). The application measured daily mobility (distance travelled on foot) and travel radius...
February 19, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/28337023/reconstruction-of-large-scale-defects-with-a-novel-hybrid-scaffold-made-from-poly-l-lactic-acid-nanohydroxyapatite-alendronate-loaded-chitosan-microsphere-in-vitro-and-in-vivo-studies
#14
Hongwei Wu, Pengfei Lei, Gengyan Liu, Yu Shrike Zhang, Jingzhou Yang, Longbo Zhang, Jie Xie, Wanting Niu, Hua Liu, Jianming Ruan, Yihe Hu, Chaoyue Zhang
A chitosan-based microsphere delivery system has been fabricated for controlled release of alendronate (AL). The present study aimed to incorporate the chitosan/hydroxyapatite microspheres-loaded with AL (CH/nHA-AL) into poly(L-lactic acid)/nanohydroxyapatite (PLLA/nHA) matrix to prepare a novel microspheres-scaffold hybrid system (CM-ALs) for drug delivery and bone tissue engineering application. The characteristics of CM-ALs scaffolds containing 10% and 20% CH/nHA-AL were evaluated in vitro, including surface morphology and porosity, mechanical properties, drug release, degradation, and osteogenic differentiation...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28336452/the-relationship-of-bone-properties-using-high-resolution-peripheral-quantitative-computed-tomography-to-radiographic-components-of-hip-osteoarthritis
#15
Mark H Edwards, Julien Paccou, Kate A Ward, Karen A Jameson, Charlotte Moss, Jennifer Woolston, M Kassim Javaid, Cyrus Cooper, Elaine M Dennison
OBJECTIVE: Positive associations between radiographic osteoarthritis (OA) and areal BMD have been demonstrated and appear strongest when bony features of OA are considered. To date, these associations have not been assessed using HRpQCT. DESIGN: A total of 318 participants (170 men and 148 women), aged 72.1-81.4 years from a non-selected cohort, underwent HRpQCT of the distal radius and tibia along with hip radiography. Differences in bone microarchitecture were assessed between those with and without osteophytes, sclerosis or joint space narrowing (JSN) in either hip...
March 20, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28336098/complications-of-volar-locking-plating-of-distal-radius-fractures-in-576-patients-with-3-2-years-follow-up
#16
REVIEW
Rikke Thorninger, Mette Lund Madsen, Daniel Wæver, Lars Carl Borris, Jan Hendrik Duedal Rölfing
BACKGROUND: Volar plating of unstable distal radius fractures (DRF) has become the favoured treatment. The complication rates vary from 3 to 36%. The purpose of the study was to estimate the complication rate of volar plating of DRF and its association with AO/OTA fracture type, surgeon experience and type of volar plate. METHODS: Retrospectively, all patients treated with volar plating of a DRF between February 2009 and June 2013 at Aarhus University Hospital, Denmark were included...
March 10, 2017: Injury
https://www.readbyqxmd.com/read/28335678/computational-study-on-transfer-of-l-ascorbic-acid-by-ulaa-through-escherichia-coli-membrane
#17
Ehsan Faghih-Mirzaee, Maryam Dehestani, Leila Zeidabadinejad
In this study, the transfer of L-ascorbic acid by UlaA through Escherichia coli (E. coli) membrane was evaluated using density functional theory (DFT), molecular docking, and molecular dynamics (MD) simulation methods. DFT calculations at the B3lyp/6[Formula: see text]311[Formula: see text]G(p,d) level were performed to investigate the interaction properties and molecular descriptors. The physical properties, such as chemical potential, chemical hardness, and chemical electrophilicity of all studied molecules, were investigated...
February 24, 2017: Journal of Bioinformatics and Computational Biology
https://www.readbyqxmd.com/read/28335398/tunable-plasmonic-band-pass-filter-with-dual-side-coupled-circular-ring-resonators
#18
Dongdong Liu, Jicheng Wang, Feng Zhang, Yuewu Pan, Jian Lu, Xiaowu Ni
A wavelength band-pass filter with asymmetric dual circular ring resonators in a metal-insulator-metal (MIM) structure is proposed and numerically simulated. For the interaction of the local discrete state and the continuous spectrum caused by the side-coupled resonators and the baffle, respectively, the transmission spectrum exhibits a sharp and asymmetric profile. By adjusting the radius and material imbedded in one ring cavity, the off-to-on plasmon-induced absorption (PIA) optical response can be tunable achieved...
March 13, 2017: Sensors
https://www.readbyqxmd.com/read/28335289/copper-micro-labyrinth-with-graphene-skin-new-transparent-flexible-electrodes-with-ultimate-low-sheet-resistivity-and-superior-stability
#19
Hak Ki Yu
We have developed self-assembled copper (Cu) micro-labyrinth (ML) with graphene skin for transparent flexible electrodes of optoelectronic devices. The Cu ML is simply formed by heating a thin Cu film with a 100-nm thickness on a SiO₂/Si substrate at 950 °C under hydrogen ambient to block the oxidation. Moreover, the Cu ML can have graphene skin at the surface by inserting carbo-hydroxyl molecules (CxHy) during heating due to the catalytic decomposition of C-H bonds on the Cu surface. The Cu ML with graphene skin (Cu ML-G) has superior sheet resistivity below 5 Ω/sq and mechanical flexibility without cracks at the bending radius of 0...
September 1, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335276/flexible-textile-based-organic-transistors-using-graphene-ag-nanoparticle-electrode
#20
Youn Kim, Yeon Ju Kwon, Kang Eun Lee, Youngseok Oh, Moon-Kwang Um, Dong Gi Seong, Jea Uk Lee
Highly flexible and electrically-conductive multifunctional textiles are desirable for use in wearable electronic applications. In this study, we fabricated multifunctional textile composites by vacuum filtration and wet-transfer of graphene oxide films on a flexible polyethylene terephthalate (PET) textile in association with embedding Ag nanoparticles (AgNPs) to improve the electrical conductivity. A flexible organic transistor can be developed by direct transfer of a dielectric/semiconducting double layer on the graphene/AgNP textile composite, where the textile composite was used as both flexible substrate and conductive gate electrode...
August 16, 2016: Nanomaterials
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