Search Results - "Žitný, Rudolf"
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The comprehensive evaluation of two collagen gels used for sausage casing extrusion purposes: The role of the structural and mechanical properties
Published in Journal of food engineering (01-04-2023)“…The rheological properties of collagen comprise one of its most important characteristics in terms of the casing extrusion process. However, it is unclear…”
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Extrusion rheometry of collagen dough
Published in Czech Journal of Food Sciences (01-01-2021)“…Although collagen is widely used (for example, in the food industry, in the pharmaceutical industry and in biomedicine), the rheological properties of the…”
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ELECTRICAL AND THERMODYNAMIC PROPERTIES OF A COLLAGEN SOLUTION
Published in Acta polytechnica (Prague, Czech Republic : 1992) (01-01-2017)“…This paper focuses on measurements of the electrical properties, the specific heat capacity and the thermal conductivity of a collagen solution (7.19% mass…”
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A simple mechanical spring-driven rheometer for measurement of Newtonian and non-Newtonian fluids—Design, validation, and input correction
Published in Journal of food engineering (01-12-2024)“…This paper deals with the construction and validation of a new, very simple purely mechanical rheometer, which is assembled from a syringe and a steel spring…”
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Hydraulic characteristic of collagen
Published in Czech Journal of Food Sciences (01-01-2015)“…Hydraulic characteristic of collagen. Czech J. Food Sci., 33: 479–485. The hysteresis of a hydraulic characteristic while pumping an aqueous solution of…”
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Starch Foam Expansion in a Closed Mold
Published in Food and bioprocess technology (01-08-2010)“…Processes with thermal treatment of starch-based materials for biologically degradable packaging products are analyzed here. The paper describes experiments on…”
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UNSTEADY FLOW OF THIXOTROPIC COLLAGEN SUBSTANCE IN PIPES
Published in Acta polytechnica (Prague, Czech Republic : 1992) (01-01-2015)“…Unsteady flow of thixotropic liquid in pipes is solved by 1D and 2D numerical methods using the same constitutive equation — the only difference is in the…”
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A method for determining the rheological properties of viscoplastic fluids using a rectangular die
Published in Journal of food engineering (01-11-2023)“…This study introduces a method for determining the rheological parameters of viscoplastic fluids with the use of rectangular dies. The relationship between the…”
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Effects of Extrusion and Irradiation on the Mechanical Properties of a Water-Collagen Solution
Published in Polymers (31-01-2022)“…This article describes 1D extension tests on bovine collagen samples (8% collagen in water). At such a high collagen concentration, the mechanical properties…”
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Thermal diffusivity estimation of the olive oil during its high-pressure treatment
Published in Journal of food engineering (01-06-2006)“…This contribution concerns cooling of olive oil under the conditions of its treatment with high pressure and the estimation of its thermal diffusivity by the…”
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An Approximate Method for Predicting the Friction Factor of Viscoplastic Shear-Thinning Fluids in Non-Circular Channels of Regular Cross-Sections
Published in Polymers (07-12-2022)“…The objective of this study is to provide a straightforward generalized simple and quick method for the prediction of the friction factor for fully developed…”
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FINITE ELEMENT ANALYSIS OF AORTAL BIFURCATION
Published in Acta polytechnica (Prague, Czech Republic : 1992) (01-01-2015)“…Arterial bifurcations loaded by internal pressure represent significant stress concentrators. Increased mechanical stress inside arterial wall probably…”
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13
INTEGRAL METHODS FOR DESCRIBING PULSATILE FLOW
Published in Acta polytechnica (Prague, Czech Republic : 1992) (01-01-2016)“…This paper presents an approximate solution of the pulsatile flow of a Newtonian fluid in the laminar flow regime in a rigid tube of constant diameter. The…”
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14
Rheological Properties of Collagen Matter Predicted Using an Extrusion Rheometer
Published in Journal of texture studies (01-12-2016)“…This article reports on measurements of the rheological properties of slightly compressible collagen liquid (from 6.6 to 8.0% mass fraction of native bovine…”
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The Effect of Irradiation on Rheological and Electrical Properties of Collagen
Published in Applied rheology (Lappersdorf, Germany) (01-08-2016)“…This paper describes the effects of irradiation on the rheological and electrical properties of a 7.7% mass fraction of native bovine collagen in water. The…”
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Identification of relaxation parameter of a physical model of vein from fluid transient experiment
Published in EPJ Web of conferences (01-01-2014)“…This paper presents a new fluid transient inflation experiment applied on a physical model of vein (short latex tube, 5mm diameter). Aim of experiments is…”
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Simulation of collagen solution flow in rectangular capillary
Published in EPJ Web of Conferences (01-01-2017)“…The viscoelastic properties of foods and polymers can be evaluated from flow of the material in capillary with specified dimension and shape. The extrusion…”
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Journal Article Conference Proceeding -
18
Heat Transfer Enhancement in a Pipe Using a Flow Inverter
Published in Heat transfer engineering (01-01-2009)“…Flow inversion, transferring a liquid from the wall region toward the center of the pipe or from the axis toward the heat transfer surface, improves heat…”
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Prediction of the average surface heat transfer coefficient for model foodstuffs in a vertical display cabinet
Published in Czech Journal of Food Sciences (01-01-2008)“…Calculations of transient temperatures of food products after their transfer from a warm environment into a display cabinet require data on the surface heat…”
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Age-related changes in longitudinal prestress in human abdominal aorta
Published in Archive of applied mechanics (1991) (01-06-2013)“…Studies on the influence of aging on the longitudinal mechanical response of elastic arteries are rare, though longitudinal behavior may have a significant…”
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