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rheology ) is the Greek word for " to stream, and to the etymology of Rhea according to Plato's Cratylus.
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rheology and is
( In rheology, this is called the relaxation time.
However, modern rheology typically deals with non-Newtonian fluid dynamics, so it is often considered a sub-field of continuum mechanics.
The experimental characterization of a material's rheological behaviour is known as rheometry, although the term rheology is frequently used synonymously with rheometry, particularly by experimentalists.
In practice, rheology is principally concerned with extending continuum mechanics to characterize flow of materials, that exhibits a combination of elastic, viscous and plastic behaviour by properly combining elasticity and ( Newtonian ) fluid mechanics.
Much of theoretical rheology is concerned with associating external forces and torques with internal stresses and internal strain gradients and velocities.
One of the major tasks of rheology is to empirically establish the relationships between deformations and stresses, respectively their derivatives by adequate measurements, although a number of theoretical developments ( such as assuring frame invariants ) are also required before using the empirical data.
The characterization of flow or deformation originating from a simple shear stress field is called shear rheometry ( or shear rheology ).
The study of extensional flows is called extensional rheology.
Food rheology is important in the manufacture and processing of food products, e. g. cheese.
Food rheology is the study of the rheological properties of food, that is, the consistency and flow of food under tightly specified conditions.
Food rheology is important in quality control during food manufacture and processing.
However, since rheology is concerned with fluids which do not have a fixed viscosity, but one which can vary with flow and time, calculation of the Reynolds number can be complicated.
Because it is thought to be the most abundant mineral in Earth ’ s mantle at shallower depths, the properties of olivine have a dominant influence upon the rheology of that part of Earth and hence upon the solid flow that drives plate tectonics.
The Deborah number is a dimensionless number, often used in rheology to characterize the fluidity of materials under specific flow conditions.
Strain is both accumulative and instantaneous depending on the rheology of the rock ; the ductile lower crust and mantle accumulates deformation gradually via shearing, whereas the brittle upper crust reacts by fracture-instantaneous stress release-to cause motion along the fault.
The Deborah number, a dimensionless number used in rheology, is named after her.
Xanthan gum is a polysaccharide, derived from the bacterial coat of Xanthomonas campestris, used as a food additive and rheology modifier, commonly used as a food thickening agent ( in salad dressings, for example ) and a stabilizer ( in cosmetic products, for example, to prevent ingredients from separating ).
Fiber simulation is a branch of mechanics that deals with modeling the dynamics and rheology of particles of large aspect ratio, or fibers with the goal of predicting the properties of fiber suspensions and networks based on first principles.
The distinction between crust and mantle is based on chemistry, rock types, rheology and seismic characteristics.
In rheology, Trouton's ratio is the ratio of extensional viscosity to shear viscosity.
Spinnbarkeit ( English: spinnability ), also known as fibrosity, is a biomedical rheology term which refers to the stringy or stretchy property found to varying degrees in mucus, saliva, albumen and similar viscoelastic fluids.
It differs from other whey protein concentrate mainly by virtue of the principles of food rheology ; it is produced by a mechanical, rather than a chemical process.
rheology and Greek
The term has the same Greek root as rheology, the science of viscoelasticity and nonlinear flow.
rheology and word
Following the coining of the term rheology the word came to be applied to instruments for measuring the character rather than quantity of flow, and the other meanings are obsolete.
rheology and for
The science of rheology and the characterization of viscoelastic properties in the production and use of polymeric materials has been critical for the production of many products for use in both the industrial and military sectors.
* Ultrasound attenuation can be used for extensional rheology measurement.
He was awarded the Bingham Medal for rheology in 1970 and the American Physical Society's High Polymer Physics Prize for 1972.
In 1957 he received the Bingham Medal for his work in rheology and in 1959 received the John Price Wetherill Medal from The Franklin Institute.
These movements actually are amenable to analysis that can predict, for example, the height of a raised block and the width of an intervening rift between blocks using the rheology of the layers and the forces of isostasy.
In 1950 he published a paper " On the Formulation of Rheological Equations of State " which has been described as " probably the most important single paper in theoretical rheology " as it established the basic requirements for mathematical models of rheology.
They are in turn used for different areas of science ranging from optics to rheology.
rheology and .
Researchers in the field seek to apply the results of many sciences, including cryobiology, cryogenics, rheology, emergency medicine, etc.
:* Some practitioners consider rheology a sub-field of materials science, because it can cover any material that flows.
The term rheology was coined by Eugene C. Bingham, a professor at Lafayette College, in 1920, from a suggestion by a colleague, Markus Reiner.
Theoretical aspects of rheology are the relation of the flow / deformation behaviour of material and its internal structure ( e. g., the orientation and elongation of polymer molecules ), and the flow / deformation behaviour of materials that cannot be described by classical fluid mechanics or elasticity.
Granular rheology refers to the continuum mechanical description of granular materials.
In rheology, an acoustic rheometer relies on the principle of ultrasound.
Structure and rheology of aqueous gels.
is and Greek
Within this notion clarity is possible, but for us who are neither Greek nor Jansenist there is not such clarity.
Deppy is Despina Messinesi, a long-time member of the Vogue staff who, although born in Boston, was born there of Greek parents.
Greek phone service is worse than French, so that it was to be some little time before contact of any sort was established.
My other nugget of art and architectural knowledge -- besides remembering that it was Ghiberti who designed the doors of the baptistery in Florence -- is the three styles of Greek columns.
I have said before how difficult it is to make any precise statements with regard to the character of the Greek and Elizabethan public.
But the firm has recognized the tight dollar and the tourist's desire to visit the `` smaller, less-traveled and relatively inexpensive countries '', and is now prepared to teach modern Greek and Portuguese through recordings.
Throughout the Dark ages, it is clear, the Greek world had been developing slowly but consistently.
Although it is not possible to sunder old and new in this era, I shall consider in the present chapter primarily the first decades of the eighth century and shall interpret them as an apogee of the first stage of Greek civilization.
( Hymen, in fact, is the Greek word for membrane.
Scientists assume that cholesterol ( from the Greek chole, meaning bile, and sterios, meaning solid ) is somehow necessary for the formation of brain cells, since it accounts for about 2% of the brain's total solid weight.
To have the Greek paper is not the great help that at first flush it seemed.
It is similar to the Ancient Greek letter Alpha, from which it derives.
The term " anthropology " is from the Greek anthrōpos (), " man ", understood to mean humankind or humanity, and-logia (- λογία ), " discourse " or " study.
Apollo ( Attic, Ionic, and Homeric Greek:, Apollōn ( gen .: ); Doric:, Apellōn ; Arcadocypriot:, Apeilōn ; Aeolic:, Aploun ; ) is one of the most important and complex of the Olympian deities in ancient Greek and Roman religion, Greek and Roman mythology, and Greco – Roman Neopaganism.
Alaksandu could be Paris-Alexander of Ilion ", whose name is Greek.
The connection with Dorians and their initiation festival apellai is reinforced by the month Apellaios in northwest Greek calendars, but it can explain only the Doric type of the name, which is connected with the Ancient Macedonian word " pella " ( Pella ), stone.
Apollo's sister Artemis, who was the Greek goddess of hunting, is identified with Britomartis ( Diktynna ), the Minoan " Mistress of the animals ".
However, the Greek tradition is referring to the existence of vapours and chewing of laurel-leaves, which seem to be confirmed by recent studies.
However, this story may reflect a cultural influence which had the reverse direction: Hittite cuneiform texts mention a Minor Asian god called Appaliunas or Apalunas in connection with the city of Wilusa attested in Hittite inscriptions, which is now generally regarded as being identical with the Greek Ilion by most scholars.
This is the Greek ideal of moderation and a virtue that opposes gluttony.
Apollo is a common theme in Greek and Roman art and also in the art of the Renaissance.
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