Crucial to an understanding of the mechanism of cell replication is a knowledge of the manner in which intracellular and surface membranes develop between successive divisions . The application of zonal centrifugation to separate cells according to their size and hence their relative age (Warmsley and Pasternak, 1970) has enabled us to study the timing of these events by measuring changes in fo...

in this study, the vibration behavior of functional graded (fg) circular and annular nanoplate embedded in a visco-pasternak foundation and coupled with temperature change is studied. the effect of in-plane pre-load and temperature change are investigated on the vibration frequencies of fg circular and annular nanoplate. to obtain the vibration frequencies of the fg circular and annular nanopla...

Abstract Variational principles and variationally consistent boundary conditions are derived for a system of double Rayleigh beams undergoing vibrations subject to axial loads. The elastic layer connecting the modelled as three-parameter nonlinear Winkler–Pasternak with Winkler having linear components Pasternak only component. forced freely vibrating beam using semi-inverse approach. Hamilton’...

AMA Moszczyńska E, Baszyńska-Wilk M, Bogusz-Wójcik A, Pasternak-Pietrzak K, Mazur Wysocka-Mincewicz M. Metabolic status in children with Cushing’s disease and its relationship remission. Pediatric Endocrinology Diabetes Metabolism. 2023. doi:10.5114/pedm.2023.130026. APA Moszczyńska, E., Baszyńska-Wilk, M., Bogusz-Wójcik, A., Pasternak-Pietrzak, K., Mazur, & Wysocka-Mincewicz, (2023). https://d...

in this paper, nonlinear vibration and instability response of an embedded pipe conveying viscose fluid is investigated. the pipe is considered as a timoshenko beam embedded on an elastic foundation which is simulated by spring constant of the winkler-model and the shear constant of the pasternak-model. the external flow force, acting on the beam in the direction of the flexural displacement is...

The mucins of sheep colonic mucosa, like other epithelial secretions, are members of the group of 'neutral' niucosubstances (Werner, 1953; Kent, 1962). These characteristically contain L-fucose, D-galactose, N-acetylamino sugars and frequently sialic acids and mannose (Gottschalk, 1960). Their chemical structure and the nature of the sugarpeptide links involved have not yet been established. Pr...

Detailed displacements of [3H]dihydromorphine by ketocyclazocine and SKF 10,047, [3H]ethylketocyclazocine by SKF 10,047, and C3H]SKF 10,047 by ketocyclazocine are all multiphasic, suggesting multiple binding sites. After treating brain tissue in vitro with naloxazone, all displacements lose the initial inhibition of 3H-ligand binding by low concentrations of unlabeled drugs. Together with Scatc...

The bending and free vibration of porous functionally graded (PFG) beams resting on elastic foundations are analyzed. material features the PFG beam assumed to vary continuously through thickness according volume fraction components. foundation medium is also considered be linear, homogeneous, isotropic, modeled using Winkler-Pasternak law. hyperbolic shear deformation theory applied for kinema...

In this study, the vibration behavior of circular and annular graphene sheet embedded in a Visco-Pasternak foundation and coupled with temperature change and under in-plane pre-load is studied. The single-layered annular graphene sheet is coupled by an enclosing viscoelastic medium which is simulated as a Visco- Pasternak foundation. By using the nonlocal elasticity theory and classical plate t...

Third order shear deformation theory of cylindrical shells is employed to investigate the vibration characteristics of non-homogeneous cylindrical shells surrounded by an elastic medium. The kinematic relations are obtained using the strain-displacement relations of Donnell shell theory. The shell properties are considered to be dependent on both position and thermal environment. A suitable fun...