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https://www.readbyqxmd.com/read/29786822/volar-locking-plate-versus-k-wire-supported-external-fixation-in-the-treatment-of-ao-asif-type-c-distal-radius-fractures-a-comparison-of-functional-and-radiological-outcomes
#1
Altuğ Duramaz, Mustafa Gökhan Bilgili, Evren Karaali, Berhan Bayram, Nezih Ziroğlu, Cemal Kural
BACKGROUND: The aim of this study was to compare the functional and radiological outcomes of K-wire-supported bridging external fixation (KW-EF) and volar locking plate (VLP) in the treatment of comminuted intra-articular distal radius fractures. METHODS: Patients treated for complex intra-articular distal radius fractures between February 2010 and April 2013 were retrospectively investigated. A total of 114 patients (42 females and 72 males) with a mean age of 44...
May 2018: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/29786418/synthesis-spray-deposition-and-hot-press-transfer-of-copper-nanowires-for-flexible-transparent-electrodes
#2
Rupali Deshmukh, Micha Calvo, Murielle Schreck, Elena Tervoort, Alla S Sologubenko, Markus Niederberger
We report a solution-phase approach to the synthesis of crystalline copper nanowires (Cu NWs) with aspect ratio > 1000 via a new catalytic mechanism comprising copper ions. The synthesis involves the reaction between copper(II) chloride and copper(II) acetylacetonate in a mixture of oleylamine and octadecene. Reaction parameters such as the molar ratio of precursors as well as the volume ratio of solvents offer the possibility to tune the morphology of the final product. A simple low-cost spray deposition method was used to fabricate Cu NW films on a glass substrate...
May 22, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29784799/amorphous-boron-oxide-at-megabar-pressures-via-inelastic-x-ray-scattering
#3
Sung Keun Lee, Yong-Hyun Kim, Paul Chow, Yunming Xiao, Cheng Ji, Guoyin Shen
Structural transition in amorphous oxides, including glasses, under extreme compression above megabar pressures (>1 million atmospheric pressure, 100 GPa) results in unique densification paths that differ from those in crystals. Experimentally verifying the atomistic origins of such densifications beyond 100 GPa remains unknown. Progress in inelastic X-ray scattering (IXS) provided insights into the pressure-induced bonding changes in oxide glasses; however, IXS has a signal intensity several orders of magnitude smaller than that of elastic X-rays, posing challenges for probing glass structures above 100 GPa near the Earth's core-mantle boundary...
May 21, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29783821/-clinical-and-genetic-analysis-of-eleven-pediatric-patients-with-alagille-syndrome
#4
L Guo, S T Zhao, Y Cheng, M Deng, H Li, Y Z Song, X R Cai, Q Zhou
Objective: To explore the clinical and molecular genetic features of patients with Alagille syndrome (AS). Methods: The clinical data of eleven pediatric patients, who were suspected to have AS at the Department of Pediatrics in the First Affiliated Hospital of Jinan University from August 2010 to March 2017, were collected and analyzed. Genomic DNA was extracted from peripheral blood leukocytes of the patients and their parents. For 5 patients collected before March 2006, all JAG1 exons and their flanking sequences were directly sequenced...
May 2, 2018: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29782540/monte-carlo-simulations-of-microtubule-arrays-the-critical-roles-of-rescue-transitions-the-cell-boundary-and-tubulin-concentration-in-shaping-microtubule-distributions
#5
Lynne Cassimeris, Jessica C Leung, David J Odde
Microtubules are dynamic polymers required for a number of processes, including chromosome movement in mitosis. While regulators of microtubule dynamics have been well characterized, we lack a convenient way to predict how the measured dynamic parameters shape the entire microtubule system within a cell, or how the system responds when specific parameters change in response to internal or external signals. Here we describe a Monte Carlo model to simulate an array of dynamic microtubules from parameters including the cell radius, total tubulin concentration, microtubule nucleation rate from the centrosome, and plus end dynamic instability...
2018: PloS One
https://www.readbyqxmd.com/read/29782169/indium-catalysts-for-low-pressure-co-2-epoxide-ring-opening-copolymerization-evidence-for-a-mononuclear-mechanism
#6
Arnaud Thevenon, Anish Cyriac, Dominic Myers, Andrew J P White, Christopher B Durr, Charlotte K Williams
The alternating copolymerization of CO2 /epoxides is a useful means to incorporate high levels of carbon dioxide into polymers. The reaction is generally proposed to occur by bimetallic or bicomponent pathways. Here, the first indium catalysts are presented, which are proposed to operate by a distinct mononuclear pathway. The most active and selective catalysts are phosphasalen complexes, which feature ligands comprising two iminophosphoranes linked to sterically hindered ortho-phenolates. The catalysts are active at 1 bar pressure of carbon dioxide and are most effective without any cocatalyst...
May 21, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29780618/closed-reduction-of-distal-radius-fractures-a-systematic-review-and-meta-analysis
#7
Hjalte Søsborg-Würtz, Sükriye Corap Gellert, Julie Ladeby Erichsen, Bjarke Viberg
Distal radius fractures (DRF) are a common injury, especially in the elderly.Displaced fractures can be reduced by closed reduction through several techniques, two of which are compared in this systematic review and meta-analysis.Closed reduction by finger-trap traction (FTT) seems to offer better correction of radial shortening. Additionally, there may be less pain and fewer complications associated with this technique.Closed reduction by manual traction seems to offer better correction of the dorsal tilt...
April 2018: EFORT Open Reviews
https://www.readbyqxmd.com/read/29779839/distal-radius-fracture-fixation-with-a-volar-locking-plate-and-endoscopic-carpal-tunnel-release-using-a-single-15mm-approach-feasibility-study
#8
A Zemirline, C Taleb, K Naito, P Vernet, P Liverneaux, F Lebailly
Distal radius fractures (DRF) may trigger, reveal or decompensate acute carpal tunnel syndrome (CTS) in 0.5-21% of cases. Internal fixation and median nerve release must then be carried out urgently. Less invasive approaches have been described for both the median nerve release using an endoscopic device and for the DRF fixation using a volar locking plate. We assessed the feasibility of DRF fixation and median nerve release through a single, minimally-invasive 15mm approach on a series of 10 cases. We reviewed retrospectively 10 consecutive cases of DRF associated with symptomatic CTS in 8 women and 2 men, aged 57 years on average...
May 17, 2018: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/29779711/mortality-prediction-system-for-heart-failure-with-orthogonal-relief-and-dynamic-radius-means
#9
Zhe Wang, Lijuan Yao, Dongdong Li, Tong Ruan, Min Liu, Ju Gao
OBJECTIVE: This paper constructs a mortality prediction system based on a real-world dataset. This mortality prediction system aims to predict mortality in heart failure (HF) patients. Effective mortality prediction can improve resources allocation and clinical outcomes, avoiding inappropriate overtreatment of low-mortality patients and discharging of high-mortality patients. This system covers three mortality prediction targets: prediction of in-hospital mortality, prediction of 30-day mortality and prediction of 1-year mortality...
July 2018: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/29779525/geometrical-constraint-of-sources-in-noninvasive-localization-of-premature-ventricular-contractions
#10
Jana Svehlikova, Michal Teplan, Milan Tysler
The inverse problem of electrocardiography for localization of a premature ventricular contraction (PVC) origin was solved and compared for three types of the equivalent cardiac electrical generator: transmembrane voltages, epicardial potentials, and dipoles. Instead of regularization methods usually used for the ill-posed inverse problems an assumption of a single point source representative of the heart generator was applied to the solution as a geometrical constraint. Body surface potential maps were simulated from eight modeled origins of the PVC in the heart model...
May 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29779194/patient-accident-fracture-paf-classification-of-acute-distal-radius-fractures-in-adults
#11
G Herzberg, T Galissard, M Burnier
There is not enough evidence in the literature to support the use of any classification system for distal radius fractures (DRF) in adults. However, there is a need for identification of more homogeneous groups of patients with DRF so that the extent of preoperative workup and sophistication of treatment would best match the needs of the patient. The authors propose an innovative method to analyse and stratify acute DRF in adults. A one-page chart includes criteria related to the patient (P), the energy of the accident (A) and the pathology of the fracture (F)...
May 19, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29778897/measurement-of-ambient-dose-equivalent-rates-by-walk-survey-around-fukushima-dai-ichi-nuclear-power-plant-using-kurama-ii-until-2016
#12
Masaki Andoh, Hideaki Yamamoto, Takashi Kanno, Kimiaki Saito
Ambient dose equivalent rates in various environments related to human lives were measured by walk surveys using the KURAMA-II systems from 2013 to 2016 within an 80-km radius of the Fukushima Dai-ichi Nuclear Power Plant. The dose rate of the locations where the walk survey was performed decreased to about 38% of its initial value in the 42 months from June 2013 to the December 2016, which was beyond that attributable to the physical decay of radiocaesium. The ecological half-life of the slow decreasing component was evaluated to be 4...
May 17, 2018: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/29777992/18-years-of-continuous-observation-of-tritium-and-atmospheric-precipitations-in-ramnicu-valcea-romania-a-time-series-analysis
#13
Octavian G Duliu, Carmen Varlam, Muataz Dheyaa Shnawaw
To get more information on the origin of tritium and to evidence any possible presence of anthropogenic sources, between January 1999 and December 2016, the precipitation level and tritium concentration were monthly recorded and investigated by the Cryogenic Institute of Ramnicu Valcea, Romania. Compared with similar data covering a radius of about 1200 km westward, the measurements gave similar results concerning the time evolution of tritium content and precipitation level for the entire time interval excepting the period between 2009 and 2011 when the tritium concentrations showed a slight increase, most probable due to the activity of neighboring experimental pilot plant for tritium and deuterium separation...
May 16, 2018: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/29777391/shaping-ability-of-reciprocating-single-file-systems-in-severely-curved-canals-waveone-and-reciproc-versus-waveone-gold-and-reciproc-blue
#14
Sebastian Bürklein, Stefanie Flüch, Edgar Schäfer
The aim was to compare the canal straightening of M-wire [Reciproc (VDW, Munich, Germany) and WaveOne (Dentsply Maillefer, Ballaigues, Switzerland)] and gold- and blue-wire heat-treated [Reciproc blue (VDW) and WaveOne Gold (Dentsply Maillefer)] instruments in severely curved root canals. A total of 80 root canals in extracted human teeth with angles of curvatures ranging between 25° and 35° and radii ranging between 3.1 and 8.5 mm were divided into four groups (n = 20). Based on radiographs taken prior to instrumentation, the groups were balanced with respect to the angle and the radius of canal curvature (P = 1...
May 18, 2018: Odontology
https://www.readbyqxmd.com/read/29777303/new-trends-in-distal-radius-fractures
#15
EDITORIAL
Philippe A Liverneaux
No abstract text is available yet for this article.
May 18, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29776470/clinical-outcomes-of-anconeus-interposition-arthroplasty-after-radial-head-resection-in-native-and-prosthetic-radial-heads
#16
Hithem Rahmi, Julie A Neumann, Christopher Klein, Carola F van Eck, Brian K Lee, John Itamura
BACKGROUND: Radiocapitellar pathology after traumatic injury to the elbow can be challenging to treat. The anconeus interposition arthroplasty has been proposed to treat radiocapitellar or proximal radioulnar joint dysfunction and pain, or both. This study evaluated whether radial head excision (native or prosthetic), followed by an anconeus interposition arthroplasty, relieves pain and improves subjective and objective elbow function in patients with post-traumatic radiocapitellar pathology...
June 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29776180/sensitivity-of-electrospray-molecular-dynamics-simulations-to-long-range-coulomb-interaction-models
#17
Neil A Mehta, Deborah A Levin
Molecular dynamics (MD) electrospray simulations of 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIM-BF_{4}) ion liquid were performed with the goal of evaluating the influence of long-range Coulomb models on ion emission characteristics. The direct Coulomb (DC), shifted force Coulomb sum (SFCS), and particle-particle particle-mesh (PPPM) long-range Coulomb models were considered in this work. The DC method with a sufficiently large cutoff radius was found to be the most accurate approach for modeling electrosprays, but, it is computationally expensive...
March 2018: Physical Review. E
https://www.readbyqxmd.com/read/29776113/torque-scaling-in-small-gap-taylor-couette-flow-with-smooth-or-grooved-wall
#18
Bihai Zhu, Zengqi Ji, Zhengkun Lou, Pengcheng Qian
The torque in the Taylor-Couette flow for radius ratios η≥0.97, with smooth or grooved wall static outer cylinders, is studied experimentally, with the Reynolds number of the inner cylinder reaching up to Re_{i}=2×10^{5}, corresponding to the Taylor number up to Ta=5×10^{10}. The grooves are perpendicular to the mean flow, and similar to the structure of a submersible motor stator. It is found that the dimensionless torque G, at a given Re_{i} and η, is significantly greater for grooved cases than smooth cases...
March 2018: Physical Review. E
https://www.readbyqxmd.com/read/29776103/liquid-phase-stabilization-versus-bubble-formation-at-a-nanoscale-curved-interface
#19
Jarrod Schiffbauer, Tengfei Luo
We investigate the nature of vapor bubble formation near a nanoscale-curved convex liquid-solid interface using two models: an equilibrium Gibbs model for homogenous nucleation, and a nonequilibrium dynamic van der Waals-diffuse-interface model for phase change in an initially cool liquid. Vapor bubble formation is shown to occur for sufficiently large radius of curvature and is suppressed for smaller radii. Solid-fluid interactions are accounted for and it is shown that liquid-vapor interfacial energy, and hence Laplace pressure, has limited influence over bubble formation...
March 2018: Physical Review. E
https://www.readbyqxmd.com/read/29776082/phase-field-based-lattice-boltzmann-modeling-of-large-density-ratio-two-phase-flows
#20
Hong Liang, Jiangrong Xu, Jiangxing Chen, Huili Wang, Zhenhua Chai, Baochang Shi
In this paper, we present a simple and accurate lattice Boltzmann (LB) model for immiscible two-phase flows, which is able to deal with large density contrasts. This model utilizes two LB equations, one of which is used to solve the conservative Allen-Cahn equation, and the other is adopted to solve the incompressible Navier-Stokes equations. A forcing distribution function is elaborately designed in the LB equation for the Navier-Stokes equations, which make it much simpler than the existing LB models. In addition, the proposed model can achieve superior numerical accuracy compared with previous Allen-Cahn type of LB models...
March 2018: Physical Review. E
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