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https://www.readbyqxmd.com/read/29334575/measurement-of-warping-angle-in-human-rib-graft-experimental-study
#1
Safvet Ors
To determine the warping angle of the costal cartilage in vivo. A nasal framework reconstruction with a rib graft was performed in a total of 130 patients. After the cartilage specimens were prepared, the remaining grafts were used for the experimental study. The angle of warping in all grafts was measured at 0, 30, and 60 minutes, after 24 hours and after one week. In this study, 8 subgroups of graft thicknesses from central and peripheral groups, which were determined according to the perichondral distance of the grafts, were evaluated, and the warping angles of a total of 48 osteochondral and chondral grafts were individually measured...
January 10, 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29334488/severe-intraocular-pressure-elevation-after-intracameral-healon-5-viscoelastic-support-for-post-operative-hypotony-after-xen-gel-stent-insertion
#2
Alice Bruynseels, Freda Sii, Imran Masood, Peter Shah
PURPOSE: To describe (i) a novel case of severe intraocular pressure (IOP) elevation due to intracameral Healon 5 for management of early post-operative hypotony following XEN Gel Stent insertion and (ii) the management of this complication. METHODS: A case report. RESULTS: A 52-year-old male, with primary open angle glaucoma and suboptimal left IOP control on maximally tolerated medical therapy, was managed with XEN Gel Stent insertion at another tertiary eye unit...
January 12, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29334482/carbon-nanotubes-within-polymer-matrix-can-synergistically-enhance-mechanical-energy-dissipation
#3
Taimoor Ashraf Ashraf, Meelad Ranaiefar, Sumit Khatri, Jamshid Kavosi, Frank Gardea, Bryan Glaz, Mohammad Naraghi
Safe operation and health of structures relies on their ability to effectively dissipate undesired vibrations, which could otherwise significantly reduce the life-time of a structure due to fatigue loads or large deformations. To address this issue, nanoscale fillers, such as carbon nanotubes (CNTs), have been utilized to dissipate mechanical energy in polymer-based nanocomposites through filler-matrix interfacial friction by benefitting from their large interface area with the matrix. In this manuscript, for the first time, we experimentally investigate the effect of CNT alignment with respect to reach other and their orientation with respect to the loading direction on vibrational damping in nanocomposites...
January 15, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29334459/development-of-charmm-compatible-force-field-parameters-for-cobalamin-and-related-cofactors-from-quantum-mechanical-calculations
#4
Anna Pavlova, Jerry M Parks, James C Gumbart
Corrinoid cofactors such as cobalamin are used by many enzymes and are essential for most living organisms. Therefore, there is broad interest in investigating cobalamin-protein interactions with molecular dynamics simulations. Previously developed parameters for cobalamins are based mainly on crystal structure data. Here, we report CHARMM-compatible force field parameters for several corrinoids developed from quantum mechanical calculations. We provide parameters for corrinoids in three oxidation states, Co3+, Co2+ and Co1+, and with various axial ligands...
January 15, 2018: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/29334314/on-the-intrinsic-constraint-of-bacterial-growth-rate-m-tuberculosis-s-view-of-the-protein-translation-capacity
#5
Manlu Zhu, Xiongfeng Dai
In nature, the maximal growth rates vary widely among different bacteria species. Fast-growing bacteria species such as Escherichia coli can have a shortest generation time of 20 min. Slow-growing bacteria species are perhaps best known for Mycobacterium tuberculosis, a human pathogen with a generation time being no less than 16 h. Despite of the significant progress made on understanding the pathogenesis of M. tuberculosis, we know little on the origin of its intriguingly slow growth. From a global view, the intrinsic constraint of the maximal growth rate of bacteria remains to be a fundamental question in microbiology...
January 15, 2018: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/29334078/high-prf-ultrafast-sliding-compound-doppler-imaging-fully-qualitative-and-quantitative-analysis-of-blood-flow
#6
Jinbum Kang, Won Seuk Jang, Yangmo Yoo
Ultrafast compound Doppler imaging based on plane-wave excitation (UCDI) can be used to evaluate cardiovascular diseases using high frame rates. In particular, it provides a fully quantifiable flow analysis over a large region of interest with high spatio-temporal resolution. However, the pulse-repetition frequency (PRF) in the UCDI method is limited for high-velocity flow imaging since it leverages between the number of plane-wave angles (<i>N</i>) and acquisition time. In this paper, we present high PRF ultrafast sliding compound Doppler imaging method (HUSDI) to improve quantitative flow analysis...
January 15, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29333773/-influence-of-positional-relationship-between-the-long-axis-of-the-mandibular-anterior-teeth-and-the-alveolar-bone-on-the-treatment-design-of-dental-implants
#7
Yu Tiantian, Pu Bishuang, Liu Jin, Xia Yulan, Wang Gang, Lan Jing
OBJECTIVE: This study aimed at investigating and measuring the positional relationship between the long axis of the mandibular anterior teeth and the alveolar bone using cone beam computed tomography (CBCT) to provide reference data for implant treatment. METHODS: From the CBCT image database, 150 cases of radiographic data were selected according to the inclusion criteria and then were divided into six groups: males' mandibular central incisors, males' mandibular lateral incisors, males' mandibular canines, females' mandibular central incisors, females' mandibular lateral incisors, and females' mandibular canines...
December 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/29333693/polypeptide-polymer-brushes-by-light-induced-surface-polymerization-of-amino-acid-n-carboxyanhydrides
#8
Timo Stukenkemper, Xavier Paquez, M W G M Verhoeven, Emiel J M Hensen, Aylvin A Dias, Dermot F Brougham, Andreas Heise
Silicon wafers are decorated with photoamine generator 4,5-dimethoxy-2-nitrobenzyl 3-(triethoxysilyl)propyl carbamate. UV-irradiation in the presence of benzyl-l-glutamate N-carboxyanhydride is carried out, resulting in the release of the surface-bound primary amines, making them viable N-carboxyanhydride (NCA) polymerization initiators. Successful polypeptide grafting is confirmed by water contact angle measurements as well as by ellipsometry, revealing a poly(benzyl-l-glutamate) (PBLG) layer of ≈3 nm. X-ray photoelectron spectroscopy confirms the presence of amide groups in the grafted PBLG while time-of-flight secondary ion mass spectroscopy provides additional evidence for the presence of PBLG on the surface...
January 15, 2018: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/29333371/use-of-repeat-anterior-maxillary-distraction-to-correct-residual-midface-hypoplasia-in-cleft-patients
#9
Sunil Richardson, Shreya Krishna, Avi Bansal
Objectives: The study was designed to evaluate the efficacy of performing a second, repeat anterior maxillary distraction (AMD) to treat residual cleft maxillary hypoplasia. Materials and Methods: Five patients between the ages of 12 to 15 years with a history of AMD and with residual cleft maxillary hypoplasia were included in the study. Inclusion was irrespective of gender, type of cleft lip and palate, and the amount of advancement needed. Repeat AMD was executed in these patients 4 to 5 years after the primary AMD procedure to correct the cleft maxillary hypoplasia that had developed since the initial procedure...
December 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/29333127/quality-assurance-procedures-based-on-dosimetric-gamma-analysis-as-a-fast-reliable-tool-for-commissioning-brachytherapy-treatment-planning-systems
#10
Grzegorz Zwierzchowski, Grzegorz Bieleda, Janusz Skowronek
Background: Fast and easily repeatable methods for commissioning procedures for brachytherapy (BT) treatment planning systems (TPS) are needed. Radiochromic film dosimetry with gamma analysis is widely used in external beam quality assurance (QA) procedures and planar film dosimetry is also increasingly used for verification of the dose distribution in BT applications. Using the gamma analysis method for comparing calculated and measured dose data could be used for commissioning procedures of the newly developed TG-186 and MBDCA calculation algorithms...
December 2017: Radiology and Oncology
https://www.readbyqxmd.com/read/29333100/assessment-of-the-temporomandibular-joint-function-in-young-adults-without-complaints-from-the-masticatory-system
#11
Wojciech Kondrat, Teresa Sierpińska, John Radke
Objective of the study was to evaluate the clinical status of the masticatory system in young adults with full permanent dentition and no stomatognathic system complaints. The study involved 186 randomly selected people with full dental arches with normal occlusal conditions corresponding to Angle's Class I aged 18 - 21 years with an average age of 19 years. Subjects were clinically examined and temporomandibular joint (TMJ) vibrations were recorded during open-wide and close movements using BioJVA. Then, patients were categorized into groups according to Piper's classification system...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29332865/fibrillar-architecture-at-three-different-sites-of-the-bovine-superficial-digital-flexor-tendon
#12
Naoki Takahashi, Takuya Hirose, Jun A Minaguchi, Hiromi Ueda, Prasarn Tangkawattana, Kazushige Takehana
Superficial digital flexor tendon (SDFT) of the bovine hindlimb originates from the caudolateral aspect of the distal femur and finally inserts onto the plantar aspect of the middle phalanges. In the present study, morphology and morphometry of the bovine SDFT at the muscle-tendon junction (MTJ), middle metatarsus (mM) and tendon-bone interface (TBI) were investigated. Cross-sectional morphology at the three regions of SDFT were oval, semioval and ring-formed, respectively. Significant difference in cross-sectional area was found only between MTJ-mM and mM-TBI (P<0...
January 12, 2018: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29332841/improved-neuron-culture-using-scaffolds-made-of-three-dimensional-pdms-micro-lattices
#13
Sisi Li, Francesco Paolo Ulloa Severino, Jelena Ban, Li Wang, Giulietta Pinato, Vincent Torre, Yong Chen
Tissue engineering strives to create functional components of organs with different cell types in vitro. One of the challenges is to fabricate scaffolds for three-dimensional (3D) cell culture under physiological conditions. Of particular interesting is to investigate the morphology and function of the central nervous system (CNS) cultured using such scaffolds. Here, we used an elastomer, polydimethylsiloxane (PDMS), to produce lattice-type scaffolds from a photolithography defined template. The photomask with antidot arrays was spin-coated by a thick layer of resist and downward mounted on a rotating stage at angle of 45°...
January 15, 2018: Biomedical Materials
https://www.readbyqxmd.com/read/29332837/a-novel-electroanalytical-assay-for-sulfamethazine-determination-in-food-samples-based-on-conducting-polymer-nanocomposite-modified-electrodes
#14
Ya-Ling Su, Shu-Hua Cheng
The toxicity of sulfa drugs has attracted great attention, and the reported electrochemical methods for sulfa drugs usually employ a high oxidation potential. In this work, a one-pot synthesized conducting polymer nanocomposite containing poly(3,4-ethylenedioxythiophene) (PEDOT) and MnO2 was cast on a screen-printed carbon electrode (SPCE), and the modified electrode showed superior electrochemical activity over a bare electrode for sulfamethazine (SMZ) determination. The SMZ detection was based on the electrochemical oxidation product, which showed an adsorptive property and exhibited a redox couple at 0...
April 1, 2018: Talanta
https://www.readbyqxmd.com/read/29332750/the-influence-of-surface-angle-on-muscle-activity-during-pilates-based-exercises
#15
Asia V Yates, Ayla A Donlin, George J Beneck, Evan E Schick
No abstract text is available yet for this article.
January 2018: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29332743/myoeletric-indices-of-fatigue-adopting-different-rest-intervals-during-leg-press-sets
#16
Humberto Miranda, Marianna Maia, Carlos G de Oliveira, Déborah Farias, Jurandir B da Silva, Vicente P Lima, Jeffrey M Willardson, Gabriel A Paz
INTRODUCTION: The purpose of this study was to examine the acute effect of different rest intervals between multiple sets of the 45° angled leg press exercise (LP45) on surface electromyographic (SEMG) spectral and amplitude indices of fatigue. METHODS: Fifteen recreationally trained females performed three protocols in a randomized crossover design; each consisting of four sets of 10 repetitions with 1 (P1), 3 (P3), or 5 (P5) minute rest intervals between sets...
January 2018: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29332666/optimizing-reverse-shoulder-arthroplasty-component-position-in-the-setting-of-advanced-arthritis-with-posterior-glenoid-erosion-a-computer-enhanced-range-of-motion-analysis
#17
Jay D Keener, Brendan M Patterson, Nathan Orvets, Alexander W Aleem, Aaron M Chamberlain
BACKGROUND: Our study purpose was to determine the optimal glenoid and humeral reverse shoulder arthroplasty (RSA) component design and position in osteoarthritic shoulders with severe glenoid retroversion deformities. METHODS: Computed tomography scans from 10 subjects were analyzed with advanced software including RSA range of motion (ROM) analysis. Variables included glenoid component retroversion of 0°, 5°, 10°, 15°, and 20° and baseplate lateralization of 0, 5, and 10 mm...
February 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29332611/effect-of-rubber-mats-and-perforation-in-the-lying-area-on-claw-and-limb-lesions-of-fattening-pigs
#18
A Falke, K Friedli, L Gygax, B Wechsler, X Sidler, R Weber
Claw and leg lesions are frequently observed in finishing pigs and are likely to compromise their welfare. Providing softer than the usual concrete flooring may reduce both the frequency and severity of these lesions. Therefore, this study evaluated the influence of rubber mats and floor perforation in the lying area on claw and leg health of finishing pigs. A total of 240 Swiss Large White finishing pigs from on average 24.9 kg until 102.3 kg were used in four batches, with six groups of 10 animals per batch...
January 15, 2018: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29332447/a-projection-quality-driven-tube-current-modulation-method-in-cone-beam-ct-for-igrt-proof-of-concept
#19
Kuo Men, Jianrong Dai
PURPOSE: To develop a projection quality-driven tube current modulation method in cone-beam computed tomography for image-guided radiotherapy based on the prior attenuation information obtained by the planning computed tomography and then evaluate its effect on a reduction in the imaging dose. MATERIALS AND METHODS: The QCKV-1 phantom with different thicknesses (0-400 mm) of solid water upon it was used to simulate different attenuation (μ). Projections were acquired with a series of tube current-exposure time product (mAs) settings, and a 2-dimensional contrast to noise ratio was analyzed for each projection to create a lookup table of mAs versus 2-dimensional contrast to noise ratio, μ...
December 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/29332445/stylet-angulation-of-70-degrees-reduces-the-time-to-intubation-with-the-glidescope%C3%A2-a-prospective-randomised-trial
#20
Yong-Cheol Lee, Jiwon Lee, Je-Do Son, Jae-Yoon Lee, Hyun-Chang Kim
Objective The GlideScope® videolaryngoscope provides a good view of the glottis. However, directing and inserting an endotracheal tube is sometimes difficult during intubation with the GlideScope®. In this study, we compared two GlideScope® stylet angulations (90° vs. 70°) in terms of the time to intubation. Methods In total, 162 patients scheduled for elective surgery under general anaesthesia were randomly assigned to one of two groups. In the 90 group ( n = 79), a 90° stylet was used. In the 70 group ( n = 78), a 70° stylet was used...
January 1, 2018: Journal of International Medical Research
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