Abstract: A miniature cooling system includes a base metal sheet, a flow channel layer, a piezoelectrically actuated metal sheet, a piezoelectric boundary compression layer and two piezoelectric ceramic vibrators. The flow channel layer is located on the base metal sheet and includes a first chamber, a second chamber, an inlet channel, a linking channel and an outlet channel. The inlet channel links the outside environment to the first chamber. The linking channel links the first chamber and the second chamber. The outlet channel links the second chamber to the outside environment. The piezoelectrically actuated metal sheet is located on the flow channel layer. The piezoelectric boundary compression layer is located on the piezoelectrically actuated metal sheet. The piezoelectric boundary compression layer includes two containing areas, and the two containing areas are respectively located above the first chamber and the second chamber.

Abstract: A three arm rectifier and inverter circuit is provided. The three arm rectifier and inverter circuit includes an input end, a rectifier circuit and an inverter circuit. The input end is utilized for inputting an input voltage and an input current. The rectifier circuit includes a low frequency switching arm. The low frequency switching arm is coupled to the input end for receiving the input voltage and the input current and generating a trigger signal. The inverter circuit includes a full bridge switch. The full bridge switch is coupled to the low frequency switching arm for receiving the trigger signal and adjusting an output voltage.

Abstract: A direct dyeing type color fused deposition modeling three-dimensional printing apparatus includes a forming stage, a forming unit, and a color-inkjet unit. The forming unit is located above the forming stage for providing forming-material layers on the forming stage in sequence. The color-inkjet unit is located above the forming stage for providing color-ink layers on the forming-material layers in sequence, wherein the forming-material layers and the color-ink layers are stacked alternately in sequence to form a colored three-dimensional object. A direct dyeing type color fused deposition modeling three-dimensional printing method is also provided.

Abstract: A miniature cooling system includes a base metal sheet, a flow channel layer, a piezoelectrically actuated metal sheet, a piezoelectric boundary compression layer and two piezoelectric ceramic vibrators. The flow channel layer is located on the base metal sheet and includes a first chamber, a second chamber, an inlet channel, a linking channel and an outlet channel. The inlet channel links the outside environment to the first chamber. The linking channel links the first chamber and the second chamber. The outlet channel links the second chamber to the outside environment. The piezoelectrically actuated metal sheet is located on the flow channel layer. The piezoelectric boundary compression layer is located on the piezoelectrically actuated metal sheet. The piezoelectric boundary compression layer includes two containing areas, and the two containing areas are respectively located above the first chamber and the second chamber.

Abstract: A color three-dimensional (3D) printing apparatus configured for forming a colored 3D object is provided. The color 3D printing apparatus includes a stage, a first printing unit, a second printing unit, a color inkjet printing unit, and a curing unit. The first printing unit is configured for providing the stage with a first material. The second printing unit is configured for providing the stage with a second material, and a gap remains between the first material and the second material. The color inkjet printing unit is configured for providing the gap with a colored pigment. The curing unit is configured for curing the colored pigment to form the colored 3D object, and the colored 3D object is composed of a plurality of colored object units stacked together. A color 3D printing method is also provided.

Abstract: A direct dyeing type color fused deposition modeling three-dimensional printing apparatus includes a forming stage, a forming unit, and a color-inkjet unit. The forming unit is located above the forming stage for providing forming-material layers on the forming stage in sequence. The color-inkjet unit is located above the forming stage for providing color-ink layers on the forming-material layers in sequence, wherein the forming-material layers and the color-ink layers are stacked alternately in sequence to form a colored three-dimensional object. A direct dyeing type color fused deposition modeling three-dimensional printing method is also provided.

Abstract: A color three-dimensional (3D) printing apparatus configured for forming a colored 3D object is provided. The color 3D printing apparatus includes a stage, a first printing unit, a second printing unit, a color inkjet printing unit, and a curing unit. The first printing unit is configured for providing the stage with a first material. The second printing unit is configured for providing the stage with a second material, and a gap remains between the first material and the second material. The color inkjet printing unit is configured for providing the gap with a colored pigment. The curing unit is configured for curing the colored pigment to form the colored 3D object, and the colored 3D object is composed of a plurality of colored object units stacked together. A color 3D printing method is also provided.

Abstract: A greenhouse shelf structure with modularized solar power facility includes a greenhouse shelf set between two neighboring standing pillars. The greenhouse shelf is a wave form shelf or a ridge form shelf. The standing pillar connects to a connector, and the side end of the connector connects the greenhouse shelf. The top of the connector connects a solar panel support. Accordingly, the solar panel support and the greenhouse shelf are integrated into a whole assembly by the modularized combination, and the place where the greenhouse situated can also be provided with a solar panel to receive the solar power to generate the electricity, which further fulfills the electricity requirement of the greenhouse or other devices.

Abstract: A greenhouse shelf structure with modularized solar power facility includes a greenhouse shelf set between two neighboring standing pillars. The greenhouse shelf is a wave form shelf or a ridge form shelf. The standing pillar connects to a connector, and the side end of the connector connects the greenhouse shelf. The top of the connector connects a solar panel support. Accordingly, the solar panel support and the greenhouse shelf are integrated into a whole assembly by the modularized combination, and the place where the greenhouse situated can also be provided with a solar panel to receive the solar power to generate the electricity, which further fulfills the electricity requirement of the greenhouse or other devices.