PL
 |
EN
Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 5

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
Wyszukiwano:
w słowach kluczowych:  płyn maziowy
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
1
Content available Double-diffusive convection of synovial (couple-stress) fluid in the presence of Hall current through a porous medium
Singh M.
International Journal of Applied Mechanics and Engineering
|
2018
|
Vol. 23, no. 4
963--976
EN
An investigation made on the effect of Hall currents on double-diffusive convection of a compressible synovial (couple-stress) fluid in the presence of a horizontal magnetic field through a porous layer is considered. The analysis is carried out within the framework of linear stability theory and normal mode technique. A dispersion relation governing the effects of viscoelasticity, compressibility, magnetic field and porous layer is derived. For the stationary convection, a synovial fluid behaves like an ordinary Newtonian fluid due to the vanishing of the viscoelastic parameter. The stable-solute gradient, compressibility, and magnetic field have postponed the onset of convection, whereas Hall currents and medium permeability have not postponed the onset of convection, moreover, a synovial fluid has a dual character in the presence of Hall currents, whereas in the absence of Hall current in synovial fluid have postponed the onset of convection, which is in contrast in case of thermal convection couple-stress fluid with same effects. These analytic results are confirmed numerically and the effects of various parameters are depicted graphically. It has been observed that oscillatory modes are introduced due to the presence of viscoelasticity, magnetic field, porous medium and Hall currents which were non- existent in their absence. The sufficient conditions for the non-existence of overstability are also obtained.
2
Content available remote Analiza mechanizmu smarowania stawów człowieka w badaniach in vitro oraz in vivo
Ryniewicz A. M., Ryniewicz A.
Przegląd Elektrotechniczny
|
2014
|
R. 90, nr 5
142--145
PL
Celem opracowania było wyjaśnienie doskonałego mechanizmu smarowania w stawach prawidłowych na podstawie badań reologicznych cieczy synowialnej oraz identyfikacji struktur i kształtu powierzchni stawowych. Proces smarowania stawów może być określony bioelastohydrodynamicznym smarowaniem. Wyróżnia się generowaniem naprężeń normalnych w cieczy synowialnej oraz efektem wynikającym z geometrii biołożyska, który polega na przejęciu obciążeń przez ciśnienie w układzie anatomicznych klinów smarnych.
EN
The aim of the study was to clarify the perfect mechanism of lubrication in the normal joints on the basis of synovial fluid rheology and the identification of structures and shape of the articular surfaces. The lubrication of joints can be determined bioelastohydrodynamic lubrication. Distinguished by generation of normal stresses in the synovial fluid and the effect resulting from the geometryof biobearing, which consists of the acquisition by the load pressure in the anatomical wedges lubricants.
3
Content available remote The method of capacity values determination in human joint gap
Wierzcholski K.
International Journal of Applied Mechanics and Engineering
|
2002
|
Vol. 7, Spec. is
65-71
EN
Analysis of carrying capacity for synovial unsymmetrical fluid flow in various geometry of human joints is presented in this paper. Following assumptions are taking into account: stationary, isothermal and incompressible synovial unsymmetrical fluid flow in magnetic field, rotational motion of bone head, squeeze of synovial fluid in human joint gap, changeable synovial non-Newtonian fluid viscosity, changeable gap height in human joint, and constant synovial fluid density.
4
Content available remote Electrophysical properties of synovial fluid as a lubricating medium of joints
Pinchuk L., Tsvetkova E., Kadolich Z., Nikolaev V.
International Journal of Applied Mechanics and Engineering
|
2002
|
Vol. 7, Spec. is
41-45
EN
The work presents the results of studying interrelation between synovial fluid lubricity and its conductivity and charge state of the friction surface in UHMWPE - CoCrMo pair. Negative charging of UHMWPE part surface was found to induce an improving action on the lubrication mechanism and reduced friction coefficient of the pair.
5
Content available remote Effect of UHMWPE hydrophilic properties upon friction in artificial joints
Tsvetkova E.
International Journal of Applied Mechanics and Engineering
|
2002
|
Vol. 7, Spec. is
51-54
EN
Hydrophilic properties upon electrophysical treatment of UHMWPE have been estimated and optimum regimes of such treatment have been determined. Variation kinetics of water receptive capacity on the sample surface has been defined and dynamics of spontaneous extraction of introduced into the microporous matrix drugs has been studied.
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.