Abstract: A crystal growing system having multiple rotatable crucibles and using a temperature gradient method comprises a crystal furnace, a plurality of crucibles, a supporting device, and a temperature control device. The crystal furnace includes a furnace body, a heater, and a hearth, wherein the furnace body from outer to inner includes an outer shell, a fiber insulation layer, an insulation brick layer, and a refractory layer. The crucible supporting device includes an elevator, a plurality of crucible guiding tubes, and a plurality of tube holders each capable of supporting a crucible guiding tube, a moving device that is connected to the elevator, a motor with electrical power that is connected to the moving device, wherein there is an affixing device between each pair of guiding tube and guiding tube holder. Each crucible is located in a corresponding crucible guiding tube. The crucible supporting device is a rotatable device.

Abstract: A crystal growing system having multiple rotatable crucibles and using a temperature gradient method comprises a crystal furnace, a plurality of crucibles, a supporting device, and a temperature control device. The crystal furnace includes a furnace body, a heater, and a hearth, wherein the furnace body from outer to inner includes an outer shell, a fiber insulation layer, an insulation brick layer, and a refractory layer. The crucible supporting device includes an elevator, a plurality of crucible guiding tubes, and a plurality of tube holders each capable of supporting a crucible guiding tube, a moving device that is connected to the elevator, a motor with electrical power that is connected to the moving device, wherein there is an affixing device between each pair of guiding tube and guiding tube holder. Each crucible is located in a corresponding crucible guiding tube. The crucible supporting device is a rotatable device.

Abstract: An apparatus to promote plant growth in vast desert areas is disclosed. The apparatus comprises a blocking plate pivotally jointed to at least two support posts. The blocking plate is operated by an electrical motor to turn wheels secured to a rotary rod to extend or pull back cables connecting the blocking plate and the wheels in order to swing the blocking plate between an approximately horizontal position and one or two approximately vertical positions in order to protect the plants underneath and promote plant growth. The apparatus can include a solar cell layer in the blocking plate, or attach a wind turbine at the top of one of the support posts to generate electrical energy from the extreme desert sunlight and windstorm. Further, rain gutters can be formed onto the blocking plate to collect and distribute rainwater.

Abstract: A multiple crucible crystal growing system using a temperature gradient method is disclosed. The system comprises a crystal furnace, a plurality of crucibles, and an elevating device, wherein the furnace includes a furnace body, a heater, and a hearth, wherein the furnace body from outer to inner includes an outer shell, a fiber insulation layer, an insulation brick layer, and a refractory layer. The height of the refractory layer is ?-? of the height of the hearth, and the heater is located at ¼-½ of the height of the hearth. The hearth is in rectangular shape and able to hold multiple crucibles to grow crystals simultaneously. The present invention ensures doping concentration and uniformity. Therefore, it can be widely applied in the area of crystal growth.

Abstract: An apparatus to promote plant growth in vast desert areas is disclosed. The apparatus comprises a blocking plate pivotally jointed to at least two support posts. The blocking plate is operated by an electrical motor to turn wheels secured to a rotary rod to extend or pull back cables connecting the blocking plate and the wheels in order to swing the blocking plate between an approximately horizontal position and one or two approximately vertical positions in order to protect the plants underneath and promote plant growth. The apparatus can include a solar cell layer in the blocking plate, or attach a wind turbine at the top of one of the support posts to generate electrical energy from the extreme desert sunlight and windstorm. Further, rain gutters can be formed onto the blocking plate to collect and distribute rainwater.