METHOD FOR REDUCING THE NEGATIVE EFFECT OF HEAT ACCLIMATIZATION FOR HATCHING OF POULTRY HATCHING EGG

    公开(公告)号:US20230354784A1

    公开(公告)日:2023-11-09

    申请号:US18344913

    申请日:2023-06-30

    CPC classification number: A01K41/023

    Abstract: A method for reducing the negative effect of heat acclimatization for the hatching of a poultry hatching egg is provided. A special light source is used as an ambient light to hatch the poultry hatching egg. The special light source is light-emitting diode (LED) monochromatic blue light with a light intensity of 20 lux to 50 lux and a wavelength of about 450 nm, such that the light can reduce the negative effect of heat acclimatization at a hatching stage of the poultry hatching egg. The method can reduce the levels of oxidation products such as malondialdehyde (MDA) and corticosterone in a chicken embryo during heat acclimatization at the hatching stage of the poultry hatching egg and increase the expression levels of antioxidase and heat shock protein (HSP) genes, and the special light source reduces the metabolic heat production of the chicken embryo.

    DEPLOYABLE WAVE ENERGY HARVESTING DEVICE FOR AUTONOMOUS UNDERWATER VEHICLES (AUVs)

    公开(公告)号:US20230146997A1

    公开(公告)日:2023-05-11

    申请号:US18153864

    申请日:2023-01-12

    CPC classification number: H02N2/188 B63G8/001 F03B13/14 H02N2/181 B63G2008/004

    Abstract: A deployable wave energy harvesting device for autonomous underwater vehicles (AUVs) includes a deployable lifting platform and an energy harvesting mechanism. The deployable lifting platform includes two scissor-type lifting structures, which are supported by a double-end threaded rod. A first stepper motor is connected to a threaded rod passing through a threaded hole at a center of a slotted pin shaft, and drives the threaded rod to lift and lower the deployable lifting platform. A spindle on the energy harvesting mechanism is connected to a generator. A support frame is hung at the end of the spindle. A scissor-type single-pendulum structure is hung at the lower end of the support frame. A load is hung on the end of the scissor-type single-pendulum structure. Second and third stepper motors are installed on the support frame to lift and lower the load by rope drive.

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