Abstract: A foamable resin composition comprising: (meth)acrylate oligomer, which accounts for 10-40 wt % of the foamable resin composition; (meth)acrylate monomer, which accounts for 35-80 wt % of the foamable resin composition; a photocuring initiator, which accounts for 1-5 wt % of the foamable resin composition; and a foaming agent, which accounts for 3-20 wt % of the foamable resin composition; wherein the foamable resin composition has a specific gravity of 0.10-1.05 g/cm3 after photocuring and thermal foam expansion for 15-20 minutes at 120° C. The aforementioned foamable resin composition can become a low specific gravity (0.10-1.05 g/cm3) material after photocuring and thermal foam expansion, then can expand the application in 3D printing, and manufacture of plastic products, such as shoe soles, coasters, floats, various types of protective gear and the like.

Abstract: Provided is a hair dryer, including a housing, a wind module, a control key and a heating module. The housing has a handle, an air duct and an annular flow-guide chamber. One side of the handle forms an air inlet, one side of the air duct forms an air outlet, and the center of the annular flow-guide chamber forms a perforation. The annular flow-guide communicates with the handle and the air duct, and the angle between the handle and the air duct is not more than 180 degrees. The wind module is disposed in the handle and includes a motor, a fan, a control circuit and an electric power unit, mutually connected. The control key is disposed on the surface of the handle and connected to the control circuit. The heating module is disposed in the air duct and connected to the control circuit and the electric power unit.

Abstract: An antenna structure includes a housing, a feeding portion, and a connecting portion. The housing defines a gap and a groove. The housing forms a radiating portion and a coupling portion through the gap and the groove. A portion of the housing between the feeding portion and the gap forms a first radiating section. The connecting portion is electrically connected to one end of the coupling portion adjacent to the gap. When the feeding portion supplies current, the current flows through the feeding portion and the first radiating section, and is coupled to the connecting portion through the gap to activate a first operating mode. When the feeding portion supplies current, the current flows through the feeding portion and the first radiating section, and is coupled to the coupling portion through the gap to activate a second operating mode.

Abstract: An antenna structure includes a housing, a first feed source, a ground portion, a radiator, and a second feed source. The housing includes a front frame, a backboard, and a side frame. The side frame defines a slot. The front frame defines a first gap, a second gap, and a groove. A radiating portion and a coupling portion are divided from the housing by the slot, the first gap, the second gap, and the groove. The first feed source is electrically connected to the radiating portion. One end of the ground portion is electrically connected to the radiating portion and another end of the ground portion is grounded. The radiator is coupled with and apart from the coupling portion. The second feed source is electrically connected to the radiator and a current from the second feed source is coupled to the coupling portion through the radiator.

Abstract: An antenna structure includes a housing, a first feed source, a first radiator, a second radiator, and a second feed source. The housing includes a first radiating portion. The first feed source feeds current to the first radiating portion and the first radiating portion activates a first mode to generate radiation signals in a first frequency band. The first radiator is positioned in the housing. The first radiating portion further couples the current to the first radiator and the first radiator activates a second mode to generate radiation signals in a second frequency band. The second radiator is positioned in a space formed by the first radiator. The second feed source feeds current to the second radiator and the second radiator activates a third mode to generate radiation signals in a third frequency band.

Abstract: An antenna structure includes a housing, a feeding portion, and a connecting portion. The housing defines a gap and a groove. The housing forms a radiating portion and a coupling portion through the gap and the groove. A portion of the housing between the feeding portion and the gap forms a first radiating section. The connecting portion is electrically connected to one end of the coupling portion adjacent to the gap. When the feeding portion supplies current, the current flows through the feeding portion and the first radiating section, and is coupled to the connecting portion through the gap to activate a first operating mode. When the feeding portion supplies current, the current flows through the feeding portion and the first radiating section, and is coupled to the coupling portion through the gap to activate a second operating mode.

Abstract: An antenna structure includes a metallic member. The metallic member includes a front frame, a backboard, and a side frame. The side frame defines a slot. The front frame defines a first gap and a second gap. The front frame between the first gap and the second gap forms a first radiating section, the front frame between the first gap and an end of the slot forms a third radiating section. Current enters the first radiating section from the first feed portion, the current flows through the first radiating section and towards the first gap and the second gap, respectively, thus activating radiating signals in a first frequency band and a second frequency band, the third radiating section obtains current from the first radiating section by coupling, thus activating radiation signals in a fourth different frequency band. A wireless communication device using the antenna structure is provided.

Abstract: An antenna structure includes a metallic member. The metallic member includes a front frame, a backboard, and a side frame. The side frame defines a slot. The front frame defines a first gap and a second gap. The front frame between the first gap and the second gap forms a radiating section. Current enters the radiating section from the first feed portion, the current flows through the radiating section and towards the first gap and the first radiating portion, thus activating radiating signals in a first frequency band; the current flows through the radiating section and towards the first ground portion, thus activating radiating signals in a second frequency band; the current flows through the radiating section and towards the second gap and the second radiating portion, thus activating radiation signals in a third different frequency band. A wireless communication device using the antenna structure is provided.

Abstract: An antenna structure includes a housing, a first feed source, a first radiator, a second radiator, and a second feed source. The housing includes a first radiating portion. The first feed source feeds current to the first radiating portion and the first radiating portion activates a first mode to generate radiation signals in a first frequency band. The first radiator is positioned in the housing. The first radiating portion further couples the current to the first radiator and the first radiator activates a second mode to generate radiation signals in a second frequency band. The second radiator is positioned in a space formed by the first radiator. The second feed source feeds current to the second radiator and the second radiator activates a third mode to generate radiation signals in a third frequency band.

Abstract: An antenna structure includes a housing, a first feed source, a ground portion, a radiator, and a second feed source. The housing includes a front frame, a backboard, and a side frame. The side frame defines a slot. The front frame defines a first gap, a second gap, and a groove. A radiating portion and a coupling portion are divided from the housing by the slot, the first gap, the second gap, and the groove. The first feed source is electrically connected to the radiating portion. One end of the ground portion is electrically connected to the radiating portion and another end of the ground portion is grounded. The radiator is coupled with and apart from the coupling portion. The second feed source is electrically connected to the radiator and a current from the second feed source is coupled to the coupling portion through the radiator.

Abstract: A housing-rotatable planetary gear reducer for stand mixer includes an immovable second planetary carrier and a rotatable second ring gear fixedly locked to a housing of the planetary gear reducer. Power from a motor is transmitted to the rotatable second ring gear and output via the housing, to which a mixer shaft is connected. The housing of the housing-rotatable planetary gear reducer is fully sealed and oil-leakproof, provided a lubricant oil level inside the planetary gear reducer is not higher than a normal oil level. Further, the housing-rotatable planetary gear reducer includes two tapered roller bearings arranged at a highest and a lowest position on the housing to provide two sufficiently spaced and stable support points capable of bearing axial and radial forces from the rotating mixer shaft. Therefore, lengthened support base and coupling can be omitted to enable reduced manufacturing cost, weight and volume of the planetary gear reducer.

Abstract: An antenna structure includes a metallic member. The metallic member includes a front frame, a backboard, and a side frame. The side frame defines a slot. The front frame defines a first gap and a second gap. The front frame between the first gap and the second gap forms a first radiating section, the front frame between the first gap and an end of the slot forms a third radiating section. Current enters the first radiating section from the first feed portion, the current flows through the first radiating section and towards the first gap and the second gap, respectively, thus activating radiating signals in a first frequency band and a second frequency band, the third radiating section obtains current from the first radiating section by coupling, thus activating radiation signals in a fourth different frequency band. A wireless communication device using the antenna structure is provided.

Abstract: An antenna structure includes a metallic member. The metallic member includes a front frame, a backboard, and a side frame. The side frame defines a slot. The front frame defines a first gap and a second gap. The front frame between the first gap and the second gap forms a radiating section. Current enters the radiating section from the first feed portion, the current flows through the radiating section and towards the first gap and the first radiating portion, thus activating radiating signals in a first frequency band; the current flows through the radiating section and towards the first ground portion, thus activating radiating signals in a second frequency band; the current flows through the radiating section and towards the second gap and the second radiating portion, thus activating radiation signals in a third different frequency band. A wireless communication device using the antenna structure is provided.

Abstract: An apparatus for transforming a signal strength of a wireless positioning system is provided. The apparatus is adapted for eliminating the difference of signal strengths between different mobile communication apparatuses or different environments. The apparatus includes a location estimation circuit. The location estimation circuit is adapted to obtain a possible coordinate by calculating a first signal strength distribution received by a mobile communication apparatus. The possible coordinate and the first signal strength distribution are taken as training data for training a transforming module with an approximation algorithm. Accordingly, the present invention adopts a positive correlation index and the approximation algorithm for automatically training a transforming module for the mobile communication apparatus without using the information of chip model and location of mobile communication apparatus.

Abstract: A porous carbonized substrate and its preparation method and uses are provided. The porous carbonized substrate has an oxygen content ranging from about 1 wt % to about 13 wt % and a nitrogen content ranging from about 2 wt % to about 16 wt %, based on the total weight of the substrate. The porous carbonized substrate can be prepared by a method comprising the following steps: providing a fiber substrate containing one or more oxidized fibers, one or more polyamide fibers or a mixture thereof; and thermally treating the fiber substrate under an inert gas atmosphere, wherein the thermally treating step comprises putting the fiber substrate in the inert gas atmosphere and increasing the temperature of the inert gas atmosphere to an elevated temperature ranging from about 700° C. to about 2000° C. with a rate of from about 50° C./minute to about 300° C./minute. The porous carbonized substrate is used as a gas diffusion layer of a fuel cell.

Abstract: An apparatus for transforming a signal strength of a wireless positioning system is provided. The apparatus is adapted for eliminating the difference of signal strengths between different mobile communication apparatuses or different environments. The apparatus includes a location estimation circuit. The location estimation circuit is adapted to obtain a possible coordinate by calculating a first signal strength distribution received by a mobile communication apparatus. The possible coordinate and the first signal strength distribution are taken as training data for training a transforming module with an approximation algorithm. Accordingly, the present invention adopts a positive correlation index and the approximation algorithm for automatically training a transforming module for the mobile communication apparatus without using the information of chip model and location of mobile communication apparatus.

Abstract: In an inline skate comprising a wheel frame provided with a rear wheel fixed axle at a rear portion thereof, a rear axle at a rear portion thereof, an intermediate fixed axle arranged between the rear wheel fixed axle and the rear axle, and a shock absorbing structure mounted between the rear wheel fixed axle, the rear axle and the intermediate fixed axle, the improvement wherein the shock absorbing structure comprises a front absorber and two rear absorbers, the front absorber comprising a first tubular member made of foamed plastic, two retainer rings each having an inner end slidably fitted into an end of the tubular member, and a first spring fitted inside said first tubular member and bearing against the two retainer rings, the two retainer rings being connected between the intermediate fixed axle and the rear wheel fixed axle, and each of the rear absorber comprising a second tubular member having an open end, a second spring fitted inside the second tubular member, a piston fitted inside the tubular me

Abstract: A digital video compression system and an apparatus implementing this system are disclosed. Specifically, matrices of pixels in RGB, YUV or CMYK formats are accepted for data compression. The data are rearranged in 8x8 pixel blocks, each block being of one pixel component type. The pixel data are then subjected to a discrete cosine transform (DCT). A quantization step eliminates DCT coefficients having amplitude below a set of preset thresholds. The video signal is further compressed by coding the elements of the quantized matrices in a zig-zag manner. This representation is further compressed by Huffman codes. Decompression of the signal is substantially the reverse of compression steps. The inverse discrete cosine transform (IDCT) may be implemented by the DCT circuit. The circuits may be implemented in a single integrated circuit chip. Three levels of compression rate control are provided during processing of video data.