Results 41 to 50 of about 1,105,625 (354)

Ultrasound elastography for evaluating stiffness of the human lens nucleus with aging: a feasibility study [PDF]

open access: yesInternational Journal of Ophthalmology, 2021
AIM: To investigate the significance of ultrasound elastography for evaluating stiffness of the human lens nucleus in volunteers with different ages.
Hai-Yan Zhou   +3 more
doaj   +1 more source

Lower limb stiffness estimation during running: the effect of using kinematic constraints in muscle force optimization algorithms [PDF]

open access: yes, 2014
The focus of this paper is on the effect of muscle force optimization algorithms on the human lower limb stiffness estimation. By using a forward dynamic neuromusculoskeletal model coupled with a muscle short-range stiffness model we computed the human ...
A. Erdemir   +15 more
core   +1 more source

Stiffness and echogenicity: Development of a stiffness-echogenicity matrix for clinical problem solving

open access: yesEuropean Journal of Translational Myology, 2019
The assessment of soft tissue stiffness is important to evaluate many neuromusculoskeletal conditions. Several tools have been proposed for the assessment of stiffness, but ultrasonography appears to be most practical.
Antonio Stecco   +3 more
doaj   +1 more source

Substrate Stiffness Controls Osteoblastic and Chondrocytic Differentiation of Mesenchymal Stem Cells without Exogenous Stimuli [PDF]

open access: yes, 2017
Stem cell fate has been linked to the mechanical properties of their underlying substrate, affecting mechanoreceptors and ultimately leading to downstream biological response.
Boyan, Barbara D.   +8 more
core   +4 more sources

The effect of geometric structure on stiffness and damping factor of wood applicable to machine tool structure

open access: yesInternational Journal of Science and Engineering, 2013
Stiffness and vibration damping capability are important criteria in design of machine tool structure. In other sides, the weight of machine tool structure must be reduced to increase  the handling capability.
Susilo Adi Widyanto   +3 more
doaj   +1 more source

Evaluation of Using Strong Column-Weak Beam Requirements in Prequalified Welded Connections in Intermediate Steel Moment Frame [PDF]

open access: yesJournal of Structural and Construction Engineering, 2019
Beams are genarally used to face bendind force and columns are used to face axial load. as the seismic load comes parallely with respect to earth surface. so the column faces the load pependicularly which is very risky for the column.
Mohammad Ali Kafi, payam tarighi
doaj   +1 more source

Asymmetric Biomechanical Properties of the Paravertebral Muscle in Elderly Patients With Unilateral Chronic Low Back Pain: A Preliminary Study

open access: yesFrontiers in Bioengineering and Biotechnology, 2022
Background: Clinical incidences of chronic low back pain among the elderly are increasing. However, studies have not fully elucidated on changes in biomechanical properties of paravertebral muscles in patients with unilateral chronic low back pain.
Zugui Wu   +15 more
doaj   +1 more source

Phonon abundance-stiffness-lifetime transition from the mode of heavy water to its confinement and hydration

open access: yes, 2018
A combination of the temporally and spatially resolved phonon spectroscopy has enabled calibration of hydrogen bond transition from the vibration mode of heavy water to the core/shelled nanodroplet and the subnanosized ionic hydration shell in terms of ...
Sun, Chang Q
core   +2 more sources

Viscoelasticity, Like Forces, Plays a Role in Mechanotransduction

open access: yesFrontiers in Cell and Developmental Biology, 2022
Viscoelasticity and its alteration in time and space has turned out to act as a key element in fundamental biological processes in living systems, such as morphogenesis and motility.
Claudia Tanja Mierke
doaj   +1 more source

Characterization of the mechanical properties of qPlus sensors

open access: yesBeilstein Journal of Nanotechnology, 2013
In this paper we present a comparison of three different methods that can be used for estimating the stiffness of qPlus sensors. The first method is based on continuum theory of elasticity.
Jan Berger   +6 more
doaj   +1 more source

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