Rheology Research Papers - Academia.edu (original) (raw)

Linear-low-density polyethylene (LLDPE) is steadily gaining importance in a wide variety of applications due to its excellent performance characteristics in the final product. The rheological properties of LLDPE in the dynamic and steady state are of great pragmatic importance and these have been studied in the present work. A correlation between the dynamic and steady-state rheological properties has been attempted and good agreement has been found.

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- Rheology, Polymer Engineering & Rheology, Non-Newtonian Rheology, Polymer Rheology
- by Saemundur Gudmundsson
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- Obstetrics, Rheology, Pregnancy, Humans
- by Aniruddha Pandit
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- Technology, Water, Rheology, Sonochemistry
- by Giuseppe Laera and +1
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- Water, Statistical Analysis, Rheology, Multidisciplinary
- by Tom van Den Kerkhof
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- Rheology, Pharmaceutical Technology, Pharmaceutical Chemistry, Lasers
- by PIERO BAGLIONI
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- Archaeology, Cultural Heritage, Soft Matter, Rheology

The performance of a hollow fibre artificial lung ('Capiox E') was analysed by measurement of the 'parallel deadspace' of the device under varying conditions in 21 patients. The efficiency with which carbon dioxide was exchanged was determined by the time available for equilibration between the blood and gas phases. When this equilibration coefficient was less than 12 seconds per litre of blood flow per litre of gas flow, there was a marked reduction in the efficiency of gas exchange. Under certain conditions, the 'counter-current' design of the device apparently permitted the clearance of carbon dioxide at a partial pressure greater than that which was found in the mixed venous blood. This anomalous behaviour may represent in vivo confirmation of the Haldane effect.

- by David Pybus
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- Carbon Dioxide, Rheology, Humans, Efficiency
- by Muriel Gerbault
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- Structural Geology, Rheology, Stress, Multidisciplinary
- by Nicola Hunt
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- Tissue Engineering, Rheology, Calcium, Multidisciplinary

This article presents a preparation methodology for making clear yield pseudoplastic fluids so that repetitive and consistent rheological measurements can be made using two types of Carbopol 980 and Carbopol Ultrez-10. The methodology calls for gentle agitation while dispersing the polymer, leaving it static for 30 minutes for air bubble removal and neutralization while agitating with NaOH followed by 1 hour for the 980 type and 5 hours for the Ultrez-10. Results are presented for the change of rheological parameters with polymer type, polymer concentration, with hydration time, and temperature. Almost all samples exhibited rheological behavior which could be very well described by the Herschel-Bulkley rheological model. Carbopol 980 solutions appear to be very suitable as model clear yield pseudoplastic fluids while Ultrez-10 solutions present some peculiarities rendering them not so suitable as model fluids.

- by V. Kelessidis
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- Methodology, Rheology, TIME, Fluid
- by Eskandar Moghimipour
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- Pharmacology, Rheology, Viscosity, Suspension
- by Anne Lehavre
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- Rheology, Rheometry
- by Petr Dejmek
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- Rheology, Starch, Osmotic pressure, Desiccation
- by M. Guiton and +2
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- Structural Geology, Plasticity, Fracture, Rheology
- by Steven Howdle
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- Carbon Dioxide, Rheology, Scanning Electron Microscopy, Polymers
- by Jorge Ramírez and +2
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- Rheology, Polymer Physics
- by Pshtiwan Shakor
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- Materials Science, Rheology, Self Compacting Concrete, Pumping
- by Hosahalli Ramaswamy
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- Chemical Engineering, Rheology, Food, Concentration
- by Graziano Ceresini
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- Aging, Rheology, Microcirculation, Cytokines
- by Alessandro Di Michele
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- Chemical Engineering, Biomedical Engineering, Rheology, Nanoparticles
- by Adam Corrigan
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- Rheology, Amyloid, Network Formation, Mathematical Sciences
- by R. Lapasin and +1
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- Physical Chemistry, Biomedical Engineering, Rheology, Stents
- by Aurélie Favier
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- Engineering, Soft Matter, Rheology, Viscosity
- by Sina Hosseini-Parvar
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- Chemistry, Technology, Methodology, Rheology

Addition of calcium chloride to milk has positive effects on cheese-making because it decreases coagulation time, creates firmer gels, and increases curd yield. Although addition of calcium chloride is a widely used industrial practice, the effect of soluble calcium on the preliminary stages of gelation is not fully understood. In addition, it is not known whether the manner of addition and equilibration of the soluble calcium would affect the rennetability of the casein micelles. Therefore, the aim of this paper was to study the details of the coagulation behavior of casein micelles in the presence of additional calcium, and to elucidate whether the manner in which this cation is added (directly as calcium chloride or by gradual exchange through dialysis) affects the functionality of the micelles. Calcium was added as CaCl(2) (1 mM final added concentration) directly to skim milk or indirectly using dialysis against 50 volumes of milk. Additional soluble calcium did not affect the ...

- by Sandra Sandra
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- Dairy Science, Rheology, Dialysis, Calcium
- by Samit Nandi
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- Microstructure, Rheology
- by Christian Roy
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- Engineering, Kinetics, Modeling, Rheology
- by Juan Luis Garcia Lugo
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- Rheology, Food Chemistry, Multidisciplinary, Food Preservation
- by Oscar Santoyo Calderon
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- Engineering, Kinetics, Rheology, Anisotropy
- by Leonid Katsnelson and +1
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- Kinetics, Rheology, Theoretical biology, Biological Sciences
- by Marc Bohner
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- Biomaterials, Rheology, Multidisciplinary, Soil Cementation
- by Jonas Addai-mensah
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- Mechanical Engineering, Chemical Engineering, Rheology, Powder technology
- by R. Lapasin
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- Chemical Engineering, Chemistry, Organic Chemistry, Rheology
- by Donald Mathews
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- Physiology, Cardiology, Surgery, Biomedical Engineering
- by Daniel Navajas
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- Rheology, Multidisciplinary, Humans, Computer Simulation

The aim of this article is to study experimentally and numerically the influence of the inclination of a plate placed near a wall on flows of Newtonian and yield stress fluids. The drag and lift forces were particularly studied. The inclination of the plate varies between 0°and 90°. The inertia of the fluid is considered negligible. The effects of the Oldroyd number, the shear-thinning index and the inclination of the plate on drag and lift are shown. Experimentally, an instrumented flume was used with a Carbopol gel as a yield stress fluid model. The measured lift and drag forces are compared to the numerical results and the literature data. The elasticity and plasticity effects are discussed.

- by Albert Magnin
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- Rheology, Non-newtonian Fluid Mechanics
- by puja kumari
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- Engineering, Microbiology, Organic Chemistry, Technology
- by Norman Wereley
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- Mechanical Engineering, Aerospace Engineering, System Identification, Modeling
- by Fred van de Velde
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- Microstructure, Light Scattering, Rheology, Confocal Microscopy
- by Jon Brons and +1
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- Rheology, Physical sciences, Particle Size
- by Angélique Leonard
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- Engineering, Water, Rheology, X-ray Tomography
- by CHRISTOS TSENOGLOU
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- Mechanical Engineering, Chemical Engineering, Rheology, Polypropylene
- by Gerrit Peters
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- Mechanical Engineering, Chemical Engineering, Rheology, Finite Element
- by Eliana B. Souto
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- Algorithms, Rheology, Nanoparticles, Pharmaceutical Chemistry
- by Christopher Pohl
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- Engineering, Technology, Rheology, Aluminum
- by anne mangeney
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- Civil Engineering, Decision Making, Rock Mechanics, Rheology
- by Norman Wereley
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- Engineering, System Identification, Rheology, Finite element method
- by Saeed Asgary and +1
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- Dentistry, Rheology, Scanning Electron Microscopy, Working Time