نتایج جستجو برای: axial and selectivecoding

تعداد نتایج: 16834876  

2018
Leif Torén Hanna Hebelka Izabela Kasperska Helena Brisby

Title: With axial loading during MRI diurnal T2-value changes in lumbar discs are neglectable: a cross sectional study Authors: Leif Torén ([email protected]) Hanna Hebelka ([email protected]) Izabela Kasperska ([email protected]) Helena Brisby ([email protected]) Kerstin Lagerstrand ([email protected]) Version: 2 Date: 21 Dec 2017 Author’s respons...

2015
Xiangui He Haidong Zou Lina Lu Rong Zhao Huijuan Zhao Qiangqiang Li Jianfeng Zhu

PURPOSE To evaluate the association between the AL/CR ratio and refractive state and explore the effectiveness of this ratio in the assessment of myopia, especially when combined with uncorrected visual acuity in schoolchildren among whom myopia is common. METHODS Cross sectional study. 4686 children from 6 primary schools, aged from 6 to 12 years were selected using the clustered-stratified ...

2014
Alice Epitropoulos

PURPOSE To compare the ability of two optical biometers to acquire the axial length (AL) measurement in cataractous eyes. METHODS This prospective, comparative, single-center study comprised 105 eyes (63 patients). AL was acquired by the composite mean value of 20 measurements (composite-20 IM) and five measurements (composite-5 IM) (IOLMaster(®) 500 version 7.1 software), and the standard me...

Journal: :Pediatric dentistry 1992
M A da Fonseca R B Abrams

Ewing's sarcoma, a malignant tumor, rarely occurs in children younger than 5 years of age. Although it may appear in any bone, it is more common in the axial skeleton, rarely involving the jaws (1 to 2% incidence, mostly in the mandible). The most common symptoms are pain and swelling in the affected area. History of trauma often is reported. The case of a 4-year, 10-month-old Caucasian male wi...

Chiara Pallante Daniele Battista Dario Abbondanza Francesco Marotti de Sciarra Francescogiuseppe Morabito Giuseppe Ruta Raffaele Barretta, Raimondo Luciano

Linear dynamic response of simply supported nanobeams subjected to a variable axial force is assessed by Galerkin numerical approach. Constitutive behavior is described by three functional forms of elastic energy densities enclosing nonlocal and strain gradient effects and their combination. Linear stationary dynamics of nanobeams is modulated by an axial force which controls the global stiffne...

Journal: :international clinical neurosciences journal 0
seifollah gholampour deptartment of bimedical engineering, north tehran branch, islamic azad university, tehran, iran nikoo soleimani m.sc. student of biomechanical engineering, department of biomedical engineering, north tehran branch, islamic azad university, tehran, iran. ali reza zalii shohada tajrish neurosurgical center of excellence, functional neurosurgery research center, shohada tajrish hospital, shahid beheshti university of medical sciences, tehran, iran. fateme zare karizi m.sc. student of biomechanical engineering, department of biomedical engineering, north tehran branch, islamic azad university, tehran, iran. afsoun seddighi shohada tajrish neurosurgical center of excellence, functional neurosurgery research center, shohada tajrish hospital, shahid beheshti university of medical sciences, tehran, iran

background: cervical spine sustains most of thevertebral column injuries, among other injuries, the disc degeneration and damage that lead to replacement of the damaged disc with cage or artificial disc. methods: the c4 to c6 vertebrae of a normal subject and a person with interbody fusion cage were 3d modelled and then analyzed using finite element method. the results of maximum stress and str...

in this paper, free vibration of an Euler-Bernoulli beam with variable cross-section resting on elastic foundation and under axial tensile force is considered. Beam’s constant height and exponentially varying width yields variable cross-section. The problem is handled for three different boundary conditions: clamped-clamped, simply supported-simply supported and clamp-free beams. First, the equ...

The natural frequency and pull-in instability of clamped-clamped nano-actuators in the presence of a dielectric layer are analyzed. The influence of the presence of Casimir force, electrostatic force, fringing field effect, axial force, stretching effects and the size effect are taken into account. The governing equation of the dynamic response of the actuator is transformed in a non-dimensiona...

  Medulloblastoma is quite uncommon in the adult population and even rarer in extra-axial site in cerebello-   pontine (CP) angle. In this report, a 23-year-old male patient with a two month history of deafness, nausea, vomiting and ataxia is presented. Clinical and radiological findings demonstrated a heterogeneously enhanced extra-axial lesion in the right CP angle. Total excision was perform...

2017
Yan-rong Wang Hong-Li Bian Qi Wang

BACKGROUND This study aimed to assess the efficacy and safety of atropine 0.5% eyedrops (ATE) for the treatment of children with low myopia (LM). METHODS In this study, a total of 126 children with LM were randomly divided into an intervention group (administered 0.5% ATE) and a control group (administered a placebo), with 63 children in each group. The outcome measurements were changes in th...

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