924 research outputs found

    A bibliography on the search for extraterrestrial intelligence

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    This report presents a uniform compilation of works dealing with the search for extraterrestrial intelligence. Entries are by first author, with cross-reference by topic index and by periodical index. This bibliography updates earlier bibliographies on this general topic while concentrating on research related to listening for signals from extraterrestrial intelligence

    Free surface electrospinning from a wire electrode

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    Electrostatic jetting from a free liquid surface offers an alternative to conventional electrospinning in which jets are emitted from spinnerets. In this work we analyze a system in which a wire electrode is swept (in a rotary motion) through a bath containing a polymeric solution in contact with a high voltage, resulting in entrainment of the fluid, the formation of liquid droplets on the wire and electrostatic jetting from each liquid droplet. Solutions of polyvinylpyrrolidone in ethanol were used as test systems to evaluate each stage of the process. The volumes of individual droplets on the wire were measured by photographic methods and correlated with the viscosity, density and surface tension of the liquid, and with system parameters such as electrode rotation rate and wire diameter. The local electric field in the absence of liquid entrainment was modeled using conventional electrostatics, and jet initiation was found to occur consistently at the angular position where the electric field exceeds a critical value of 34 kV/cm, regardless of rotation rate. Two operating regimes were identified. The first is an entrainment-limited regime, in which all of the entrained liquid is jetted from the wire electrode. The second regime is field-limited, in which the residence time of the wire electrode in an electric field in excess of the critical value is too short to deplete the fluid on the wire. The productivity of the system was measured and compared to the theoretical values of liquid entrainment. As expected, highest productivity occurred at high applied potentials and high rotation rates.Novartis-MIT Center for Continuous Manufacturin

    Effect of multiple plane turning of eggs during incubation on hatchability

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    Includes bibliographical references (page [2])

    Effect of holding temperature on hatchability of chicken eggs

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    This bulletin reports on Department of Poultry Husbandry research project 40, Care of Hatching Eggs--P. [2].Digitized 2007 AES.Includes bibliographical references (page 12)

    Producing high quality eggs

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    Effect of humidity and turning of eggs before incubation on hatching results

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    The effect of angle of turning eggs during incubation on hatchability

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    Effect of pre-incubation on the hatchability of chicken eggs

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    This bulletin reports on Department of Poultry Husbandry research project 40, Care of Hatching Eggs--P. [2].Digitized 2007 AES.Includes bibliographical references (page 12)
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