Results 21 to 30 of about 1,168,061 (327)

Does shear wave ultrasound independently predict axillary lymph node metastasis in women with invasive breast cancer? [PDF]

, 2013
Shear wave elastography (SWE) shows promise as an adjunct to greyscale ultrasound examination in assessing breast masses. In breast cancer, higher lesion stiffness on SWE has been shown to be associated with features of poor prognosis.
A Evans, A Evans, AK Witkiewicz, Alastair Thompson, AM O’Shea, Andrew Evans, C Hatzis, CA Purdie, Caroline O. Michie, Colin A. Purdie, D Regner, DO Cosgrove, ES Burnside, J Boughey, JH Youk, JL Vandergrift, JLB Bevilacqua, JM Chang, Kim Thomson, KR Levental, LC Chen, Lee B. Jordan, MW Conklin, N Houssami, National Research Ethics Service, NO Kandemir, P Farmer, Patsy Whelehan, Petra Rauchhaus, PF Qiu, PL Fitzgibbons, Sarah Vinnicombe, T Kuehn, TC Kwok, WA Berg   +34 more
core   +4 more sources

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

, 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., Doroudi, Maryam, Gall, Ken, Hyzy, Sharon L., Lee, Erin M., Olivares-Navarrete, Rene, Schwartz, Zvi, Smith, Kathryn, Williams, Joseph K.   +8 more
core   +7 more sources

Stiffness of Post-Tensioned Girderless Floor With Different Column Grids

Journal of Architectural and Engineering Research, 2021
The paper considers models of monolithic flat floor slabs with five spans in both directions. The cell sizes are 6×6m, 6×9m, and 6×12m. The calculation method is based on the application of temperature load and rope modeling of rod elements.
Ashot George Tamrazyan, Tatiana Anatolу Matseevich   +1 more
doaj   +1 more source

Arterial stiffness

JRSM Cardiovascular Disease, 2012
Measurements of biomechanical properties of arteries have become an important surrogate outcome used in epidemiological and interventional cardiovascular research. Structural and functional differences of vessels in the arterial tree result in a dampening of pulsatility and smoothing of blood flow as it progresses to capillary level.
Quinn, Ursula, Tomlinson, Laurie A, Cockcroft, John R   +2 more
openaire   +2 more sources

Confounding factors in ultrasound liver elastography. Part 2. Distortion of measurement results due to the characteristics of the state of the body and external influences [PDF]

Вестник Витебского государственного медицинского университета, 2023
The purpose of the study was to analyze the external influences and characteristics of the state of the organism being examined, which affect the results of ultrasonic elastography of the liver. Internal confounding factors include: inflammation and some
S.I. Pimanov, V.S. Kaportseva, O.I. Danilova   +2 more
doaj   +1 more source

Estimation of the normal contact stiffness for frictional interface in sticking and sliding conditions [PDF]

, 2019
Modeling of frictional contact systems with high accuracy needs the knowledge of several contact parameters, which are mainly related to the local phenomena at the contact interfaces and affect the complex dynamics of mechanical systems in a prominent ...
Baillet, L., Berthier, Y., Massi, F., Salipante, M., Tonazzi, D.   +4 more
core   +1 more source

Holographic aberration correction: optimising the stiffness of an optical trap deep in the sample [PDF]

, 2011
We investigate the effects of 1st order spherical aberration and defocus upon the stiffness of an optical trap tens of μm into the sample. We control both these aberrations with a spatial light modulator. The key to maintain optimum trap stiffness over a
Bowman, Bowman, Cižmár, Curtis, Gibson, Graham Gibson, Huang, Jesacher, Ke, Maria Dienerowitz, Miles Padgett, Padgett, Reicherter, Reihani, Reihani, Richard Bowman, Rohrbach, Sheppard, Sheppard, Sinclair, Theofanidou, Vellekoop, Wulff   +22 more
core   +1 more source

Experimental Investigations to Study the Effectiveness of Cepstral Features to Detect Surface Fatigue Wear Development in a FZG Spur Geared System Subjected to Accelerated Tests

Archives of Acoustics, 2021
Gears are essential machine elements used to transmit power and motion from one unit to another under desired angular velocity ratio. Various types of gears have been developed to fulfill power transmission requirements in industrial applications.
Muniyappa AMARNATH, I.R. PRAVEEN KRISHNA, Ramalingam KRISHNAMURTHY   +2 more
doaj   +1 more source

Modeling and design of energy efficient variable stiffness actuators [PDF]

, 2010
In this paper, we provide a port-based mathematical framework for analyzing and modeling variable stiffness actuators. The framework provides important insights in the energy requirements and, therefore, it is an important tool for the design of energy ...
Carloni, R., Stramigioli, S., Visser, L.C., Ünal, R.   +3 more
core   +2 more sources

Arterial Stiffness [PDF]

Pulse, 2013
Stiffness of large arteries has been long recognized as a significant determinant of pulse pressure. However, it is only in recent decades, with the accumulation of longitudinal data from large and varied epidemiological studies of morbidity and mortality associated with cardiovascular disease, that it has emerged as an independent predictor of ...
openaire   +2 more sources