نتایج جستجو برای: biomechanical phenomena

تعداد نتایج: 139180  

Journal: :iranian red crescent medical journal 0
mohammadjavad freidouni department of biology and anatomical sciences, faculty of medicine, shahid beheshti university of medical sciences, tehran, ir iran hossein nejati faculty of medicine, shahid beheshti university of medical sciences, tehran, ir iran maryam salimi department of biology and anatomical sciences, faculty of medicine, shahid beheshti university of medical sciences, tehran, ir iran mohammad bayat department of biology and anatomical sciences, faculty of medicine, shahid beheshti university of medical sciences, tehran, ir iran; department of biology and anatomical sciences, faculty of medicine, shahid beheshti university of medical sciences, tehran, ir iran. tel/fax: +98-2122439976 abdollah amini department of biology and anatomical sciences, faculty of medicine, shahid beheshti university of medical sciences, tehran, ir iran mohsen noruzian department of biology and anatomical sciences, faculty of medicine, shahid beheshti university of medical sciences, tehran, ir iran

conclusions in contrast to the findings in humans and certain other species, glucocorticoid administration caused anabolic effect on the cortical bone of tibia diaphysis bone in rats. results glucocorticoid-treated rats showed weight loss and considerable mortality (21%). the biomechanical properties (maximum force) of glucocorticoid-treated rats in groups 4 (62 ± 2.9), 6 (63 ± 5.1), and 7 (60 ...

Journal: :iranian journal of radiology 0
cyrus taghizadeh delkhoush department of physical therapy, faculty of rehabilitation sciences, iran university of medical sciences, tehran, iran nader maroufi department of physical therapy, faculty of rehabilitation sciences, iran university of medical sciences, tehran, iran; department of physical therapy, faculty of rehabilitation sciences, iran university of medical sciences, tehran, iran. tel: +98-9128168310, fax: +98-2122220946 ismail ebrahimi takamjani department of physical therapy, faculty of rehabilitation sciences, iran university of medical sciences, tehran, iran farzam farahmand school of mechanical engineering, sharif university of technology, tehran, iran ali shakourirad advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran hamid haghani faculty of health management and information science, iran university of medical sciences, tehran, iran

background patients who have shoulder pain usually have compensatory or contributory deviation of shoulder motion during arm elevation. in the traditional scapulohumeral rhythm, the share of the acromioclavicular (ac) and the sternoclavicular (sc) joint movements and also the role of ac internal rotation angle are unknown. objectives the main purpose of this study was to measure and compare the...

Journal: :iranian red crescent medical journal 0
atarodalsadat mostafavinia department of anatomical sciences and biology, school of medicine, shahid beheshti university of medical sciences, tehran, ir iran reza masteri farahani department of anatomical sciences and biology, school of medicine, shahid beheshti university of medical sciences, tehran, ir iran mohammadreza abbasian department of orthopedic surgery, akhtar hospital, shahid beheshti university of medical sciences, tehran, ir iran mohammadmehdi vasheghani farahani paramedical school, shahid beheshti university of medical sciences, tehran, ir iran mohammadjavad fridoni department of anatomy, medical faculty, zanjan university of medical sciences, zanjan, ir iran sara zandpazandi medical school, shahid beheshti university of medical sciences, tehran, ir iran

conclusions this study confirmed the efficacy of pw lllt on biomechanical strength, trabecular bone volume, callus volume, and osteoblast number of repairing callus in a complete tibial osteotomy animal model at a relatively late stage of the bone healing process. materials and methods this experimental study was conducted at shahid beheshti university of medical sciences in tehran, iran. we pe...

Journal: :journal of biomedical physics and engineering 0
a. norouzpour md, eye research center, khatam-al-anbia eye hospital, mashhad university of medical sciences (mums), mash- had, iran z. hooshyar msc, department of mechanical engineering, mechanical engineering college, shiraz univer- sity, shiraz, iran a. mehdizadeh md-phd, department of medical physics, school of medicine, shiraz university of medical sci- ences (sums), shiraz, iran university of mash- had, mashhad, iran

background: autoregulation of blood flow is a marvelous phenomenon balanc- ing blood supply and tissue demand. although many chemically-based explanations for this phenomenon have been proposed and some of them are commonly used today, biomechanical aspects of this phenomenon was neglected. the biomechanical aspect provides insights to us to model vessel diameter changes more precisely and comp...

2011
D. P. Pioletti

Development of artificial scaffold for musculoskeletal applications, especially in load-bearing situations, requires the consideration of biomechanical aspects for its integrity and its function. However, the biomechanical loading could also be used to favour tissue formation through mechano-transduction phenomena. Design of scaffold could take advantages of this intrinsic mechanical loading.

A. Mehdizadeh A. Norouzpour, Z. Hooshyar

Background: Autoregulation of blood flow is a marvelous phenomenon balanc- ing blood supply and tissue demand. Although many chemically-based explanations for this phenomenon have been proposed and some of them are commonly used today, biomechanical aspects of this phenomenon was neglected. The biomechanical aspect provides insights to us to model vessel diameter changes more precisely and comp...

2014
Haowei Wang Samuel Yehoshua Sabrina S. Ali William Wiley Navarre Joshua N. Milstein

The bacterial chromosome is under varying levels of mechanical stress due to a high degree of crowding and dynamic protein-DNA interactions experienced within the nucleoid. DNA tension is difficult to measure in cells and its functional significance remains unclear although in vitro experiments have implicated a range of biomechanical phenomena. Using single-molecule tools, we have uncovered a ...

Journal: :Journal of biomechanical engineering 2018
Ahmet Erdemir Peter J Hunter Gerhard A Holzapfel Leslie M Loew John Middleton Christopher R Jacobs Perumal Nithiarasu Rainlad Löhner Guowei Wei Beth A Winkelstein Victor H Barocas Farshid Guilak Joy P Ku Jennifer L Hicks Scott L Delp Michael Sacks Jeffrey A Weiss Gerard A Ateshian Steve A Maas Andrew D McCulloch Grace C Y Peng

The role of computational modeling for biomechanics research and related clinical care will be increasingly prominent. The biomechanics community has been developing computational models routinely for exploration of the mechanics and mechanobiology of diverse biological structures. As a result, a large array of models, data, and discipline-specific simulation software has emerged to support end...

Journal: :Bio Systems 2012
Abir U. Igamberdiev

Biological forms can be studied independently of the principles of their actualization, which was demonstrated in the book of D'Arcy Thompson "On Growth and Form" (1917) and in the nomogenetic theories of evolution. However the principles of actualization of forms have to be established and they are not directly related to the genetic system, being the generic phenomena non-reducible to the for...

Journal: :Journal of applied biomechanics 2010
Amit Gefen

The extrapolation of biological damage from a biomechanical model requires that a closed-form mathematical damage threshold function (DTF) be included in the model. A DTF typically includes a generic load variable, being the critical load (e.g., pressure, strain, temperature) causing irreversible tissue or cell damage, and a generic time variable, which represents the exposure to the load (e.g....

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