Results 251 to 260 of about 587,593 (302)

Dynamic Mechanical Properties of Porcine Lacrimal Canaliculus

Current Eye Research, 2007
To better understand the mechanisms of tear drainage, the mechanical properties of porcine canaliculus were measured in compression mode while submerged in isotonic fluid by using a dynamic mechanical analyzer. The storage modulus (E') for the porcine canaliculus is about 3 kPa at 1 Hz and increases to about 5 kPa at 25 Hz.
Heng, Zhu, Subir, Bhatia, Anuj, Chauhan
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Dynamic Mechanical Properties of Polyisobutylene

Journal of Applied Physics, 1953
Values of complex shear compliance (and rigidity) have been obtained for a sample of polyisobutylene of viscosity-average molecular weight 1.35×106 at 22 temperatures from −45 to 100°C and at about 20 frequencies from 30 to 5000 cps. Measurements were made by means of the transducer method of Fitzgerald and Ferry with a precision of ±2 percent and are ...
Edwin R. Fitzgerald, Lester D. Grandine, John D. Ferry   +2 more
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Dynamic mechanical properties of polymers

Journal of Applied Polymer Science, 1969
AbstractA technique, employing samples in the form of tuning forks, to measure the mechanical properties of polymers is presented. Results for low density polyethylene, polypropylene, and polycarbonates are shown. A large transition is observed for polypropylene at approximately +10°C and a small transition at −100°C for the polycarbonates ...
D. G. Legrand, P. F. Erhardt
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Dynamic Measurement of Single Protein's Mechanical Properties

Biochemical and Biophysical Research Communications, 2000
Dimerized (tandemly repeated) protein was constructed, and the stretching force during the unfolding of the single protein molecule was measured using an atomic force microscope. In quasistatic measurements using normal force-distance curve measurements, each monomer unit was unfolded step by step.
K.Mitsui, K.Nakajima, H.Arakawa, M.Hara, A.Ikai   +4 more
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Dynamic mechanical properties of an inlay composite

Journal of Dentistry, 1989
A visible light-cured composite resin (Brilliant DI) has been studied over a wide range of temperature and frequency by a dynamic mechanical flexural method. The derived data of logarithmic modulus and loss tangent (tan delta) show considerable changes following a secondary-cure process applied to the material. This involved the application of heat and
P, Dionysopoulos, D C, Watts
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Dynamic properties of Lednev's parametric resonance mechanism

Bioelectromagnetics, 1996
This paper presents a further development of the mechanism for the detection of weak magnetic fields proposed by [Lednev (1991): Bioelectromagnetics 12:71-75]. The fraction of excited oscillator states of an unhydrated ion is studied in a dynamic model driven by the predicted (time-varying) transition probability in the presence of thermal noise and an
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Dynamic mechanical properties of human ribs

International Journal of Vehicle Safety, 2013
In order to characterise the mechanical behaviour of bones under various loading conditions, it is important to determine the effect of strain rate on the load carrying capacity and fracture behaviour of various members of our skeletal system. This study aims to understand the mechanical behaviour of human thoracic ribs through the application of a ...
Gavriel Feuer, Subashis Paul, Subrata Saha   +2 more
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Dynamic mechanical properties of multiphase acrylic systems

Journal of Biomedical Materials Research, 1990
AbstractThe influence of type and quantity of five different dimethacrylate crosslinking agents on the dynamic mechanical properties of multiphase acrylic systems has been studied. These materials, commonly used in bioengineering, were processed by polymerization of a mixture of liquid methacrylate monomers, and poly(methyl methacrylate) powder.
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Dynamic Mechanical and Tensile Properties

2012
DYNAMIC MECHANICAL AND TENSILE PROPERTIES are determined in all branches of materials science. There is a large body of published structure/property information that can be integrated with coatings research and development. By using structure/property information, coatings chemists can design and optimize chemical structures of the binder components of
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Measurement of Dynamic Mechanical Properties

1980
Measurements of dynamic mechanical properties of viscoelastic materials have been reviewed. The technology for investigating the dynamic mechanical properties of materials has advanced greatly due to new electronic circuits, improved transducers, signal receiving systems, and computerized controlling systems.
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