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Biorheology is an international interdisciplinary journal that publishes research on the deformation and flow properties of biological systems or materials. It is the aim of the editors and publishers of
Biorheology to bring together contributions from those working in various fields of biorheological research from all over the world. A diverse editorial board with broad international representation provides guidance and expertise in wide-ranging applications of rheological methods to biological systems and materials.
The aim of biorheological research is to determine and characterize the dynamics of physiological processes at all levels of organization. Manuscripts should report original theoretical and/or experimental research promoting the scientific and technological advances in a broad field that ranges from the rheology of macromolecules and macromolecular arrays to cell, tissue and organ rheology. In all these areas, the interrelationships of rheological properties of the systems or materials investigated and their structural and functional aspects are stressed.
The scope of papers solicited by
Biorheology extends to systems at different levels of organization that have never been studied before, or, if studied previously, have either never been analyzed in terms of their rheological properties or have not been studied from the point of view of the rheological matching between their structural and functional properties. This biorheological approach applies in particular to molecular studies where changes of physical properties and conformation are investigated without reference to how the process actually takes place, how the forces generated are matched to the properties of the structures and environment concerned, proper time scales, or what structures or strength of structures are required.
Biorheology invites papers in which such 'molecular biorheological' aspects, whether in animal or plant systems, are examined and discussed. While we emphasize the biorheology of physiological function in organs and systems, the biorheology of disease is of equal interest. Biorheological analyses of pathological processes and their clinical implications are encouraged, including basic clinical research on hemodynamics and hemorheology.
In keeping with the rapidly developing fields of mechanobiology and regenerative medicine,
Biorheology aims to include studies of the rheological aspects of these fields by focusing on the dynamics of mechanical stress formation and the response of biological materials at the molecular and cellular level resulting from fluid-solid interactions. With increasing focus on new applications of nanotechnology to biological systems, rheological studies of the behavior of biological materials in therapeutic or diagnostic medical devices operating at the micro and nano scales are most welcome.
Abstract: The time dependence of the viscosity of dilute solutions of collagen was used as a means of investigating a kinetic mechanism for the unwinding of the collagen triple helix. It was possible to show that a two step process could be used to explain the data. From a temperature related viscosity study, activation parameters were obtained for the kinetics of unwinding for collagen from both young and old rat tail tendons.
vol. 6, no. 3, pp. 161-168, 1970
Abstract: The rate of change (with temperature), of blood-plasma viscosity, is compared with the rates for water and for sucrose solutions. A parameter m emerges, which is virtually independent of temperature; but being sensitive to the protein content of the plasma, it offers promise as a clinical index. The derivation is based on general concepts, beginning with the viscosity of gases.
vol. 6, no. 3, pp. 169-187, 1970
Abstract: It has long been known that a cylindrical obstacle placed in a moving fluid generates a vortex trail. The frequency of vortex detachment is related to the non-dimensional Strouhal number, S . For Newtonian fluids S = 0.14 at Reynolds number R = 60 and increases to a constant ≃ 0.20 at R > 200 . The equivalent relationships for blood were determined and found to be considerably different. Strouhal number for blood showed a correlation with the Reynolds number only when S ’s obtained with a given cylinder were considered. They…were 3 times greater than for Newtonian fluids at threshold R (i.e. R at which vortices begin to detach), and they decreased with increasing R .
vol. 6, no. 3, pp. 189-199, 1970
Abstract: The sea urchin egg is composed of the cell membrane, the cortex, the endoplasm and the nucleus, which are different in mechanical properties from one another. A slight difference of hydrostatic pressure exists between the interior of the cell and the outside medium. The viscoelastic properties of the egg as a whole, of the cell surface and of the interior cytoplasm change upon fertilization and during early development.
vol. 6, no. 3, pp. 201-234, 1970