4results about How to "Avoid rapid aging" patented technology

The utility model belongs to the technical field of guide plates, in particular to a motor front end cover installation guide plate, which comprises a motor main body and an outer guide cover plate, a front bearing oil cup cover is arranged at the front end of the motor main body, and a screw hole and a through hole are arranged on the outer guide cover plate in a penetrating manner. A front end cover and a front bearing oil cup cover of the motor body are in threaded connection with screw holes in the outer flow guide cover plate through bolts, a connecting rod is arranged in the outer flow guide cover plate, one end of the connecting rod is welded to the inner flow guide cover plate, and an air hole is formed in the middle of the inner flow guide cover plate in a penetrating mode. According to the device, the convection heat exchange efficiency and the heat dissipation air volume between the air and the front end cover and between the air and the front bearing oil cup cover are improved, so that the temperature of the front end bearing is effectively reduced, overheating of the motor bearing and rapid aging of bearing oil are effectively avoided, the replacement period of the bearing oil is prolonged, and the service life of the bearing is prolonged.

The application discloses an exosome preparation for treating hypofunction of ovary and a preparation method and application thereof, and belongs to the technical field of biological medicine, and particularly relates to a preparation method of an exosome preparation for treating hypofunction of ovary, which comprises the following steps: taking perinatal stem cells, subculturing, obtaining domesticated perinatal stem cells, digesting, expanding and culturing to a density of 80%-85%, adding a culture medium for culturing, collecting supernatant, collecting supernatant for 3 times, combining, filtering through a 0.45 mu m PES filter membrane first, and then concentrating to obtain a concentrated solution; centrifuging, resuspending a precipitate, purifying through a density gradient, obtaining an exosome precipitate, and suspending the exosome precipitate in a cryopreservation protective solution to obtain the exosome preparation. The application provides the exosome preparation for treating hypofunction of ovary and the preparation method and application thereof, a safe, sufficient, high-purity and stable exosome preparation is prepared, and the stem cell exosome for treating hypofunction of ovary is provided.

This utility model provides a portable spraying device, including a housing with a first through hole fixedly connected to a nozzle; a second through hole fixedly connected to a water quick connector; and a receiving chamber connected to the nozzle and water quick connector. Tap water enters the receiving chamber through the water quick connector and is then atomized and sprayed out through the nozzle. A convenient installation structure is also provided on the exterior of the housing, separate from the receiving chamber. This portable spraying device offers multiple installation methods, including magnetic adsorption, protrusion suspension, and rod-like attachment, facilitating installation in various indoor and outdoor applications. Installation and disassembly are quick and easy, suitable for temporary or seasonal use in different situations. Furthermore, this portable spraying device is small in size, occupies little space, and is easy to store.

The invention discloses a pulley structure for transferring electromechanical equipment, and relates to the technical field of pulley structures. The invention comprises a support column, a rotating module is fixed on the top surface of the support column, a winch module is fixedly installed on the top surface of the rotating shaft of the rotating module, a U-shaped vertical plate is fixedly installed on the right side of the bottom surface of the winch module, sliding grooves are provided on the front and back sides of the U-shaped vertical plate, two concave rings are fixed on the outer wall of the support column, two convex rings are fixed on the left side of the U-shaped vertical plate, the two convex rings are located above the two concave rings, the convex rings are rotatably connected to the inner walls of the two concave rings, and a U-shaped slide plate is fixedly installed on the bottom surface of the steel cable of the winch module. The invention restricts the U-shaped slide plate by the U-shaped vertical plate, so that the bottom plate on the U-shaped slide plate will not swing left and right, thereby avoiding the problem that when the pulley structure is used, the motor equipment is suspended in the air and swings left and right, causing the electromechanical equipment to fall and be damaged.