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On Concentrated Contact Interactions [PDF]
, 2006 Three examples of equilibrium problems are presented where concentrated contact interactions arise to guarantee partwise equilibrium. In the first example, a concentrated force is applied at the boundary of a half plane, and the stress field has an integrable singularity at the point where the force is applied.
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Contact lenses interactive – 1
Optician, 2022Bill Harvey summarises some of your discussions around a recent interactive CPD exercise which was aimed at encouraging discussion about contact lens patient education and management of handling issues and concerns. Neil Retallic, with whom the exercise was developed, offers an overview of the responses (C101585)
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Contact and Physical Interaction
Annual Review of Control, Robotics, and Autonomous Systems, 2022This article reviews approaches to controlling robots undergoing physical contact and dynamic interaction with objects in the world. Conventional motion control is compared with a hybrid combination of position and force control. Several challenges are reviewed, most importantly the problems of instability: dynamic instability due to coupling, and ...
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Interactions between contacting fibers
Physics of Fluids, 1998To investigate the nature of the forces involved in mechanical contact between fibers in a fluid, the interaction between a polymeric fiber settling under the influence of gravity and a fixed strand of the same material was observed. Initially after impact, the sedimenting fiber rotated about a fixed point.
Michael P. Petrich, Donald L. Koch
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Interacting particles in contact
Faraday Discussions of the Chemical Society, 1990The depth of the potential well for contacting particles determines the texture of a floc. This energy can be calculated from the interaction forces between the particles. In electrocratic colloids it depends on the counter-ion valency z, the (local) potential ϕδ near the contact point and the curvature of the surfaces in contact.
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2020
High-precision HERA data corresponding to a luminosity of around 1 fb−1 have been used in the framework of eeqq contact interactions (CI) to set limits on possible high-energy contributions beyond the Standard Model to electron--quark scattering. Measurements of the inclusive deep inelastic cross sections in neutral and charged current ep scattering ...
Wichmann, Katarzyna, Wing, Matthew
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High-precision HERA data corresponding to a luminosity of around 1 fb−1 have been used in the framework of eeqq contact interactions (CI) to set limits on possible high-energy contributions beyond the Standard Model to electron--quark scattering. Measurements of the inclusive deep inelastic cross sections in neutral and charged current ep scattering ...
Wichmann, Katarzyna, Wing, Matthew
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Tear Film — Contact Lens Interactions
1994Contemporary contact lenses, when considered in perspective, are remarkably effective; the remaining primary challenge, however, appears to be the relationship of the contact lens to the tear film. The number of contact lens wearers in the United States is no longer increasing, perhaps the result of discomfort which may occur initially, preventing ...
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2012
Algorithms for numerical implementation of conditions of dynamic contact interaction of deformable materials with a beforehand unknown zone of contact which varies in the process of motion are constructed. These algorithms take into account the influence of friction forces in a contact zone.
Oxana Sadovskaya, Vladimir Sadovskii
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Algorithms for numerical implementation of conditions of dynamic contact interaction of deformable materials with a beforehand unknown zone of contact which varies in the process of motion are constructed. These algorithms take into account the influence of friction forces in a contact zone.
Oxana Sadovskaya, Vladimir Sadovskii
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Contact Interaction of Two Elastic Wedges
Journal of Mathematical Sciences, 2002The authors discuss a problem on contact of two elastic wedges. It is supposed that before loading only the vertices of wedges are in contact. After loading, the sides of wedges come into contact over small regions close to their vertices. The derived system of dual integral equations is reduced to the Fredholm integral equation of the second kind for ...
Ostrik, V. I., Ulitko, A. F.
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Molecular Interactions in Adherens-Type Contacts
Journal of Cell Science, 1987ABSTRACT Adherens junctions are members of a molecularly and structurally heterogeneous family of cell contacts sharing a common association with the microfilament system. Various topics related to the biogenesis of these cellular contacts and the molecular interactions involved in their formation are discussed. ⅓ The role of vinculin, a
B, Geiger +3 more
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