8,027 research outputs found

    Regression Models for Estimation of Maximal Aerobic Power in Man

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    Regression models have been proposed by various workers for predicting physical work capacity of man. This paper reviews critically the applications of these models for indirect estimation of maximal aerobic power in man, which is the best single physiological index for the assessment of work performance capacity of man

    Rip/singularity free cosmology models with bulk viscosity

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    In this paper we present two concrete models of non-perfect fluid with bulk viscosity to interpret the observed cosmic accelerating expansion phenomena, avoiding the introduction of exotic dark energy. The first model we inspect has a viscosity of the form ζ=ζ0+(ζ1ζ2q)H{\zeta} = {\zeta}_0 + ({\zeta}_1-{\zeta}_2q)H by taking into account of the decelerating parameter q, and the other model is of the form ζ=ζ0+ζ1H+ζ2H2{\zeta} = {\zeta}_0 + {\zeta}_1H + {\zeta}_2H^2. We give out the exact solutions of such models and further constrain them with the latest Union2 data as well as the currently observed Hubble-parameter dataset (OHD), then we discuss the fate of universe evolution in these models, which confronts neither future singularity nor little/pseudo rip. From the resulting curves by best fittings we find a much more flexible evolution processing due to the presence of viscosity while being consistent with the observational data in the region of data fitting. With the bulk viscosity considered, a more realistic universe scenario is characterized comparable with the {\Lambda}CDM model but without introducing the mysterious dark energy.Comment: 9 pages, 6 figures, submitted to EPJ-

    Methods of Measuring Yield Value, Viscosity and Thixotropy

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    Fabrication of a repulsive-type magnetic bearing using a novel arrangement of permanent magnets for vertical-rotor suspension

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    A repulsive-type magnetic bearing system has been fabricated in which the rotor of a vertical-shaft-type motor is levitated due to the repulsive force between two sets of permanent magnets. A novel arrangement of permanent magnets has been reported here, which has made the suspension of the rotor possible. The system is planned to be applied for pumping milks and other related products in the New Zealand dairy industry

    A Simple Rotary Viscometer for the Study of Anomalous Viscous Properties

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    The Velocity Gradient Method for the Measurement of Viscous Properties of Non-Newtonian Liquids

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    Dichlorido[μ-10,21-dimethyl-2,7,13,18-tetra­phenyl-3,6,14,17-tetra­aza­tricyclo­[17.3.1.18,12]tetra­cosa-1(23),2,6,8,10,12(24),13,17,19,21-deca­ene-23,24-diolato]dicopper(II) ethanol hemisolvate dihydrate

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    The dinuclear title complex, [Cu2(C46H38N4O2)Cl2]·0.5C2H5OH·2H2O, is located on crystallographic inversion centres with two half-mol­ecules in the asymmetric unit. The two CuII atoms are coordinated by a hexa­dentate dianionic ligand formed in situ from the condensation of two tridentate ligands by four imine N atoms and two bridging phenolate O atoms along with two Cl atoms at axial positions. The coordination geometry around the metal atoms is distorted square-pyramidal (τ = 0.185 and 0.199). The non-bonding Cu⋯Cu distances are 2.9556 (12) and 2.9506 (12) Å in the two dimers. The packing is stabilized through solvent-mediated inter­molecular O—H⋯O and O—H⋯Cl hydrogen bonds. The diamine chain of one of the dimers is disordered over two positions in a 0.680 (5):0.320 (5) ratio

    Electrical Properties of Indian Mica L-Power Factor

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