Acute effects of continuous and intermittent aerobic exercises on hemorheological parameters: a pilot study.

abstract：:Arterial hemodynamic forces may play a role in the localization of early atherosclerotic lesions. We have been developing numerical techniques based on overset or "Chimera" type formulations to solve the Navier-Stokes equations in complex geometries simulating arterial bifurcations. This paper presents three-dimension...

journal_title：Biorheology

authors： Cheer AY,Dwyer HA,Barakat AI,Sy E,Bice M

更新日期：1998-11-01 00:00:00

abstract：:The viscosity: shear rate relationship of whole blood is shown to be described to a good approximation by a bi-linear plot on log: log axes. This has allowed an analytical solution to be obtained which gives a full description of the flow properties of blood in rigid tubes of a size where the Fahraeus-Lindqvist effect...

journal_title：Biorheology

authors： Rampling MW,Challoner T

更新日期：1983-01-01 00:00:00

abstract：:A rigidity index (RI) related to red blood cell deformability was measured by using the hemorheometre. The RI for 13 patients homozygous for sickle cell disease was 109 +/- 44 at 37 degrees C and at atmospheric pO2. The filtration time curve as a function of pO2 is biphasic for sickle cell suspensions. The pO2 at whic...

journal_title：Biorheology

authors： Kraiem A,Craescu CT,Galacteros F,Martin-Caburi J,Domenget C,Garel MC,Beuzard Y

更新日期：1989-01-01 00:00:00

abstract：:It is widely accepted that whilst exhibiting clinically useful anti-inflammatory and analgesic activity, the application of non-steroidal anti-inflammatory drugs (NSAIDs) does not affect the underlying pathogenesis of articular diseases such as rheumatoid arthritis. The demonstration of a role for COX-2 in the resolut...

journal_title：Biorheology

authors： Colville-Nash PR,Willoughby DA

更新日期：2002-01-01 00:00:00

abstract：:The effects of platelet margination and enhanced platelet diffusivity, as induced by red blood cells, on the adhesion of platelets, were investigated for a range of haematocrits, under 2D axi-symmetric flow, simulating previous in vitro experiments [Microvasc. Res. 17 (1979), 238-262]. The effect of margination was in...

journal_title：Biorheology

authors： Jordan A,David T,Homer-Vanniasinkam S,Graham A,Walker P

更新日期：2004-01-01 00:00:00

abstract：BACKGROUND:In order to play different roles in vascular functions as a mechanosensor to blood flows and as a barrier to transvascular exchange, the endothelial surface glycocalyx (ESG) should have an organized structure. Due to the limitations of optical and electron microscopy, the ultra-structure of ESG has not been ...

journal_title：Biorheology

authors： Fan J,Sun Y,Xia Y,Tarbell JM,Fu BM

更新日期：2019-01-01 00:00:00

abstract：:The purpose of this study was to examine the theoretical impact of the local bifurcation geometry on the shear rate gradient in a divergent arteriolar-type bifurcation. Newtonian flow through an arteriolar bifurcation was modeled using 3-dimensional computational fluid dynamics (CFD). Branching angles of 30 degrees, 5...

journal_title：Biorheology

authors： Noren D,Palmer HJ,Frame MD

更新日期：2000-01-01 00:00:00

abstract：BACKGROUND:Osteoarthritis is a common, localized joint disease that causes pain, stiffness and reduced mobility. Osteoarthritis is particularly common in the knees. The effects of osteoarthritis on the rheology of synovial fluid in the knees are not fully understood and consequently require further study. OBJECTIVE:Th...

journal_title：Biorheology

authors： Madkhali A,Chernos M,Grecov D,Kwok E

更新日期：2016-11-09 00:00:00

abstract：BACKGROUND:Blood flow in stenotic vessels strongly influences the progression of vascular diseases. Plaques in stenotic blood vessels vary in stiffness, which influences plaque behavior and deformation by pressure and flow. Concurrent changes in plaque geometry can, in turn, affect blood flow conditions. Thus, simultan...

journal_title：Biorheology

authors： Shimizu Y,Ohta M

更新日期：2015-01-01 00:00:00

abstract：:The electrical properties of red blood cell (RBC) suspensions are influenced by flow conditions, and prior studies indicate that electrical properties may reflect the kinetics of RBC aggregation. Changes of conductance and capacitance were monitored and had a time course resembling a "syllectogram" (i.e., temporal cha...

journal_title：Biorheology

authors： Baskurt OK,Uyuklu M,Meiselman HJ

更新日期：2009-01-01 00:00:00

abstract：:Magnitude and time-dependence of the effects of red cell aggregation and sedimentation on the rheology of human blood were studied during low shear (tau W 2.5 to 92 mPa) flow through horizontal tubes (ID 25 to 105 microns). Immediately following reduction of perfusion pressure to a low value the red cell concentration...

journal_title：Biorheology

authors： Alonso C,Pries AR,Gaehtgens P

更新日期：1989-01-01 00:00:00

abstract：:It is has been known for more than 80 years that compared to in vitro determinations, blood behaves as a less viscous fluid under in vivo flow conditions. The experiments of Whittaker and Winton were among the first dealing with the in vivo effects of altered blood rheology, and experimental studies during the second ...

journal_title：Biorheology

authors： Baskurt OK

更新日期：2008-01-01 00:00:00

abstract：:The fractionation of micron-size particles according to physical properties of size, density and surface characteristics by centrifugation and electrophoresis is hindered when the particles behave collectively rather than individually. The formation and sedimentation of droplets containing particles is an extreme exam...

journal_title：Biorheology

authors： Omenyi SN,Snyder RS

更新日期：1983-01-01 00:00:00

abstract：:Stress relaxation regimes arising in a muscle subject to stepwise deformation are described on the basis of a recent phenomenological model of fully activated muscle tissue which is presented in the form of a second-order constitutive equation. It is shown that this model reproduces the qualitative form of relaxation ...

journal_title：Biorheology

authors： Timanin EM

更新日期：1984-01-01 00:00:00

abstract：:A non-linear elastic model taking into account the microscopic structure of biological soft tissues is briefly presented and extended to quasi linear viscoelasticity. The modelling of the rheological behavior for near zero stress values is then discussed. ...

journal_title：Biorheology

authors： Flaud P,Quemada D

更新日期：1988-01-01 00:00:00

abstract：:Nonlinear mathematical techniques now make it possible to quantify the complexity of an irregular time series through calculation of a parameter known as fractal dimension. In the present study, we use such an analysis to provide evidence that histamine-induced pressure oscillations in an isolated rabbit ear resistanc...

journal_title：Biorheology

authors： Griffith TM,Edwards DH

更新日期：1993-09-01 00:00:00

abstract：:Conducting experiments on very soft biological tissues can be difficult. Traditionally, unconfined compression and shear have been used. Here, an improved method of compression testing, lubricated squeezing flow is described. This gives a uniform compression along the squeezing axis and almost uniform equi-biaxial elo...

journal_title：Biorheology

authors： Nasseri S,Bilston L,Tanner R

更新日期：2003-01-01 00:00:00

abstract：BACKGROUND:Bile, which is secreted by the liver, is essential for digesting fat and maintaining homeostasis. Although the rheology of bile is very important to its flow, its extensional viscosity has not been studied. OBJECTIVE:We investigated the stretching of bile and evaluated its extensional viscosity using a fila...

journal_title：Biorheology

authors： Minh NN,Obara H,Shimokasa K,Zhu J

更新日期：2019-01-01 00:00:00

abstract：:The separation process of blood and RBC suspensions in a hematocrit range between 0.3-0.7 was investigated with a centrifuge allowed to run at low accelerations (100 xg-1000 xg). The position of the interface between the supernatant of plasma and the RBC column was continuously recorded by a new optoelectronic measuri...

journal_title：Biorheology

authors： Lerche D,Bilsing R

更新日期：1988-01-01 00:00:00

abstract：:Stress relaxation in three varieties of cherries was studied using the penetration test with a cylindrical pin, 4 mm in diameter, having a flat tip. One half of the fruit was modified by partial skinning, since experiments show that skin approximately doubles the apparent modulus of elasticity of the cherries. The ski...

journal_title：Biorheology

authors： Blahovec J

更新日期：1996-11-01 00:00:00

abstract：:The maintenance of articular cartilage integrity requires a balance between anabolic and catabolic processes which are under the control of chondrocytes. These cells are living in an anaerobic environment and normally do not divide. They are responsible for the continuous maintenance of the cartilage extracellular mat...

journal_title：Biorheology

authors： Pujol JP,Felisaz N,Boumediene K,Ghayor C,Herrouin JF,Bogdanowicz P,Galera P

更新日期：2000-01-01 00:00:00

abstract：:The aim of this study was to investigate the effects of a surgical limb lengthening procedure on the biorheological features of some lengthened soft tissues. In this procedure external fixators were applied to goats' right radius to stretch the tissues. The right forelegs of goats were lengthened by 2, 4 cm, respectiv...

journal_title：Biorheology

authors： Huang K,Zeng Y,Xia H,Liu C

更新日期：1998-07-01 00:00:00

abstract：:Flow-induced changes in the red cell microstructure of human blood are identified from mechanical and optical evidence. On initiation of steady flow, a new microstructure develops as the shear strain increases through unit strain. This structure is identified with the formation of layers of red cells that slide on pla...

journal_title：Biorheology

authors： Thurston GB

更新日期：1994-03-01 00:00:00

abstract：:Several noninvasive light scattering techniques are reviewed that can be utilized in rheological studies of mucus and other soft biological matrices. Included are quasielastic light scattering techniques to determine the compressibility moduli of polymer lattices, resonance methods that can be used to measure the shea...

journal_title：Biorheology

authors： Nossal R

更新日期：1987-01-01 00:00:00

abstract：BACKGROUND:Foam sclerotherapy is the process of using an aqueous foam to deliver surfactant to a varicose vein to damage vein wall endothelial cells, causing the vein to spasm, collapse and ultimately be re-absorbed into the body. Aqueous foams are complex fluids that can exhibit a significant yield stress and high eff...

journal_title：Biorheology

authors： Roberts TG,Cox SJ,Lewis AL,Jones SA

更新日期：2021-01-13 00:00:00

abstract：:This study investigated the changes in biorheological characteristics of skin after expansion. Expanders were implanted into the back of eight adult dogs, and after an eight-week expansion the expanded and the non-expanded control skins were transferred to an adjacent site. The expanded specimens and their controls we...

journal_title：Biorheology

authors： Zeng Y,Huang K,Xu C,Zhang J,Sun G

更新日期：2001-01-01 00:00:00

abstract：:In channel flow of multicomponent suspensions, segregation behavior of suspended components perpendicular to the flow direction is often observed, which is considered to be caused by the differential properties of the lateral migration depending on their shape, size, flexibility, and other characteristics. In the pres...

journal_title：Biorheology

authors： Makino M,Sugihara-Seki M

更新日期：2013-01-01 00:00:00

abstract：:An acinus is the principal secretion unit of an exocrine gland. This paper sets up a mathematical model of an acinus and examines the effect on the output of varying the operating parameters, both of the secretion mechanism and the fluid properties. Particular reference is made to acini of the pancreas. The question o...

journal_title：Biorheology

authors： Grigg CH,Fitz-Gerald JM

更新日期：1986-01-01 00:00:00

abstract：:Pentoxifylline (PTX) has been reported to enhance the early accumulation of neutrophils at the site of Staphylococcus aureus subcutaneous infection in mice (1) and to stimulate in vitro PMN chemotaxis, particularly under dense agarose (2). Among the biochemical events contributing to chemotaxis are actin polymerizatio...

journal_title：Biorheology

authors： Freyburger G,Belloc F,Boisseau MR

更新日期：1990-01-01 00:00:00

abstract：BACKGROUND:Parenteral nutrition (PN) is a hyperosmolar solution composed of glucose, amino acids and a lipid emulsion, which is often used despite well-known side effects and complications. OBJECTIVES:In this study the hypothesis was tested that PN could affect hemorheology. METHODS:The influence of increasing plasma...

journal_title：Biorheology

authors： Compagnoni SC,Schulzki T,Thoeny S,Reinhart WH

更新日期：2014-01-01 00:00:00