LIMITS ON NEUTRINO OSCILLATIONS FROM MUON-DECAY NEUTRINOS

No evidence for neutrino oscillations is seen in our experiment which observed neutrinos from muon-decays at rest. Upper limits on oscillation parameters are presented for neutrino mixing of the kind {nu}{sub e}{leftrightarrow}{nu}{sub {mu}} and also of the kind {nu}{sub e}{leftrightarrow}{nu}{sub i}, i{ne}{mu}

Topological structure and dynamics of three-dimensional active nematics

Theoretical Physic

Topological structure and dynamics of three-dimensional active nematics

Topological structures are effective descriptors of the nonequilibrium dynamics of diverse many-body systems. For example, motile, point-like topological defects capture the salient features of two-dimensional active liquid crystals composed of energy-consuming anisotropic units. We dispersed force-generating microtubule bundles in a passive colloidal liquid crystal to form a three-dimensional active nematic. Light-sheet microscopy revealed the temporal evolution of the millimeter-scale structure of these active nematics with single-bundle resolution. The primary topological excitations are extended, charge-neutral disclination loops that undergo complex dynamics and recombination events. Our work suggests a framework for analyzing the nonequilibrium dynamics of bulk anisotropic systems as diverse as driven complex fluids, active metamaterials, biological tissues, and collections of robots or organisms

How Do People Pursue Happiness?: Relating Personality, Happiness-Increasing Strategies, and Well-Being

affiliation, Big Five, factor analysis, goals, happiness, leisure, mediation, mental control, personality, subjective well-being,