Results 261 to 270 of about 12,679,538 (309)
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Surface-Active Particles with Microstructured Surfaces
Langmuir, 2005Interfaces adsorbing solid particles have recently attracted great attentions in the field of materials science, because they are useful as templates of well-ordered particle arrays or of microstructured hollow spheres. The solid particles are adsorbed at the interfaces and form self-assembled structures when the particles have suitable wettability to ...
Yoshimune, Nonomura +2 more
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From active contours to active surfaces
CVPR 2011, 2011Identifying the surfaces of three-dimensional static objects or of two-dimensional objects over time are key to a variety of applications throughout computer vision. Active surface techniques have been widely applied to such tasks, such that a deformable spline surface evolves by the influence of internal and external (typically opposing) energies ...
Akshaya Kumar Mishra +2 more
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Spatiotemporal Addressing of Surface Activity
Science, 2001We have modified surface catalytic activity in real time and space by focusing an addressable laser beam to differentially heat a platinum (110) single-crystal surface. Ellipsomicroscopy imaging of local conditions (such as reactant and product local coverages) enabled us to close the loop between sensing and actuation (both spatiotemporally resolved).
Wolff, J. +4 more
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Journal of Colloid and Interface Science, 1969
Abstract The effects of high concentrations of urea to increase surface pressure and alter surface potentials of stearic and palmitic acid monolayers were examined at temperatures between 15° and 40°C. Results of the investigation show that penetration of urea into an interfacial region depends upon the presence of molecules at the interface, where ...
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Abstract The effects of high concentrations of urea to increase surface pressure and alter surface potentials of stearic and palmitic acid monolayers were examined at temperatures between 15° and 40°C. Results of the investigation show that penetration of urea into an interfacial region depends upon the presence of molecules at the interface, where ...
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1993
Surfactants are characterized by their ability to reduce the surface tension of aqueous fluids; this enables them to act as detergents, wetting agents, emulsifiers. James (1965) has defined them as molecules with two different structural elements, one being a hydrophobic hydrocarbon (water-repellent) group, and the other a hydrophilic polar (water ...
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Surfactants are characterized by their ability to reduce the surface tension of aqueous fluids; this enables them to act as detergents, wetting agents, emulsifiers. James (1965) has defined them as molecules with two different structural elements, one being a hydrophobic hydrocarbon (water-repellent) group, and the other a hydrophilic polar (water ...
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Surface-Activated Coupling Reactions Confined on a Surface
Accounts of Chemical Research, 2015Chemical reactions may take place in a pure phase of gas or liquid or at the interface of two phases (gas-solid or liquid-solid). Recently, the emerging field of "surface-confined coupling reactions" has attracted intensive attention. In this process, reactants, intermediates, and products of a coupling reaction are adsorbed on a solid-vacuum or a ...
Dong, Lei, Liu, Peinian, Lin, Nian
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Muscular activity and surface EMG
Journal of Biomechanics, 1985In human movement, the skeletal muscles act as the active force elements. The force exerted by a muscle as well as the coordination of several muscles involved e. g. in a complex movement are controlled by the neural control of the muscles. A specific innervation pattern or program is transmitted from the CNS to the effectors via the axons and motor ...
G. Rau, H. Reucher
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American Cancer Society Nutrition and Physical Activity Guideline for Cancer Survivors
Ca-A Cancer Journal for Clinicians, 2022Colleen K Spees +2 more
exaly
Active Contours and Active Surfaces
2012Active contours and active surfaces are means of model-driven segmentation. Their use enforces closed and smooth boundaries for each segmentation irrespective of the image content. They are particularly useful if such properties cannot be derived everywhere from the data.
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Plasminogen activation at the cell surface
2003It has been emphasized here that plasminogen represents an enormous reservoir of proteolytic potential and that its activation is consequently a highly regulated process. This begins at the level of transcriptional regulation of the two plasmino-gen activators and in some cell types also their regulated secretion.
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