Results 231 to 240 of about 186,637 (248)
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Journal of Chemical Education, 1973
Students are not generally made aware of the extraordinary magnitude of the strengths of chemical bonds in terms of the forces required to pull them apart. Molecular bonds are usually considered in terms of the energies required to break them, and we are not astonished at the values encountered.
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Students are not generally made aware of the extraordinary magnitude of the strengths of chemical bonds in terms of the forces required to pull them apart. Molecular bonds are usually considered in terms of the energies required to break them, and we are not astonished at the values encountered.
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The Journal of Adhesion, 1987
Abstract Methods are presented for predicting the load carrying capability of a bonded joint using relatively simple laboratory test samples. It is first shown that using an average stress criterion can lead to errors of an order of magnitude in predicted load carrying capability.
G. P. Anderson, K. L. Devries
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Abstract Methods are presented for predicting the load carrying capability of a bonded joint using relatively simple laboratory test samples. It is first shown that using an average stress criterion can lead to errors of an order of magnitude in predicted load carrying capability.
G. P. Anderson, K. L. Devries
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Orthodontic bonding to porcelain—Bond strength and refinishing
American Journal of Orthodontics and Dentofacial Orthopedics, 1988Glazed porcelain surfaces are not amenable to resin penetration for orthodontic bonding. The aims of this study were to evaluate (1) the bond strengths of two orthodontic composite materials to treated porcelain surfaces, (2) the effect of thermocycling, and (3) the porcelain surfaces after refinishing.
Roger Weinberg +3 more
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Bond strengths of resin-bonded metal castings
Dental Materials, 1985Abstract Composite resin-retained appliances are susceptible to failure at the resin-metal interface. The objective of this study was to evaluate bond strengths of perforated and electrolytically etched framework designs by subjecting them to tensile and shear loading. Shear bond strengths were always higher than tensile bond strengths.
John R. Sturdevant +3 more
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TDS: Bond Nature and Bond Strength
2014TDS features and work function change coincidently demonstrate four-stage bond forming kinetics and associated valence charge relaxation. The four stages include the following: (1) O1− formation, (2) O1− transition O2− with sp-orbit hybridization, (3) tetrahedron relaxation, and (4) dipole annihilation upon oxygen overdosing.
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