Abstract: A calibration device for a power amplifier includes a calculation unit, a first storage unit and a multiplier. The calculation unit is utilized for generating a calibration factor according to a value of a characteristic parameter of the power amplifier. The first storage unit coupled to the calculation unit, for storing the calibration factor. The multiplier is coupled to the first storage unit and a baseband unit, for multiplying a baseband signal outputted from the baseband unit by the calibration factor for generating an input signal to the power amplifier.

Abstract: By dividing data entries among multiple data collections, a data collection comprising a data entry associated with a requested percentile can be determined with reference to the number of data entries within each collection. Initially, the range of values corresponding to the identified data collection can be presented as the value of the requested percentile. Should further detail be required, the value for a requested percentile can be refined by averaging the range, linearly, or otherwise, extrapolating estimated values for the data entries within the identified data collection, or sorting the actual entries according to their values. A relational database can maintain the data entries, each comprising values along one or more dimensions, and an OLAP engine component can maintain a counting of the data entries within the defined data collections.

Abstract: The present invention is related to a process for producing an Anka-polyphenol containing broth with high antioxidant activity, comprising saccharifying and then fermenting raw rice with a Monascus purpureus BCRC 930109 strain, to produce a fermentative broth having high antioxidant activity, high Anka-polyphenol and high amino acid contents. The Anka-polyphenol containing broth can be added to a coffee drink to enhance its antioxidant activity and eliminate its bitter and sour tastes.

Abstract: A method for making a thermal interface material includes the steps of: (a) providing an array of carbon nanotubes formed on a substrate, the carbon nanotubes having interfaces defined therebetween; (b) providing a transferring device and disposing at least one low melting point metallic material above the array of carbon nanotubes, using the transferring device; and (c) heating the low melting point metallic material and the array of carbon nanotube to a certain temperature to make the at least one low melting point metallic material melt, then flow into the interspaces between the carbon nanotubes, and combine (e.g., mechanically) with the array of carbon nanotubes to acquire a carbon-nanotube-based thermal interface material.

Abstract: A heat spreader includes a bottom wall (12) and a cover (14) hermetically connected to the bottom wall. Cooperatively the bottom wall and the cover define a space (11) therebetween for receiving a working fluid therein. A wick structure (15) is received in the space and thermally interconnects the bottom wall and the cover. The wick structure includes at least a carbon nanotube array, which can conduct heat from the bottom wall to the cover and draw condensed liquid of the working fluid from the cover toward the bottom wall.

Abstract: A signal transmitting apparatus for orthogonal frequency division multiplexing (OFDM) system comprises a compandor, a predistortor, a power amplifier and a feedback module. The compandor is configured to compress and expand a transmitted signal. The predistortor is configured to perform a predistortion operation on output signals of the compandor. The power amplifier is configured to amplify output signals of the predistortor. The feedback module is configured to adjust parameters of the compandor and the predistortor based on a feedback signal.

Abstract: A method for making carbon nanotubes that includes the following steps. A metal substrate is provided. The surface of the metal substrate is polished. The polished metal substrate is put into a reaction device. A protecting gas is introduced to the reaction device while the environment inside of the reaction device is heated to about 400 to 800 degrees. A mixture of carbon source gas and protecting gas is introduced to the reaction device, whereby the carbon nanotubes are grown on the metal substrate on the polished metal substrate.

Abstract: The present invention discloses a signal processing device and a signal processing method. The signal processing device includes a plurality of receiving devices, a storage module, a weighting module, and a processing module. Each of the receiving devices is capable of receiving an original signal stream, thus the plurality of receiving devices can generate a set of signal streams. The storage module is used for storing a plurality set of signal streams generated by the plurality of receiving devices. The weighting module can generate plurality sets of rotated signal streams according to a reference phase and the plurality sets of signal streams, and further generate a set of weighting signal according to the rotated signal streams. And, the processing module can generate a set of weighting signal streams according to the set of weighting signal and the plurality set of signal streams.

Abstract: An LED lamp cooling apparatus (10) includes a substrate (11), a plurality of LEDs (13) electrically connected with the substrate, a heat sink (19) for dissipation of heat generated by the LEDs and a pulsating heat pipe (15) thermally connected with the heat sink. The pulsating heat pipe includes a plurality of heat receiving portions (154) and a plurality of heat radiating portions (155), and contains a working fluid (153) therein. The substrate is attached to the heat receiving portions of the pulsating heat pipe and the heat sink is attached to the heat radiating portions of the pulsating heat pipe. The heat generated by the LEDs is transferred from the heat receiving portions to the heat radiating portions of the pulsating heat pipe through pulsation or oscillation of the working fluid in the pulsating heat pipe.

Abstract: A light-emitting diode (LED) assembly includes a circuit board (10), at least one LED (20) being electrically connected with and being arranged on a side of the circuit board, and a heat dissipation apparatus (40) being arranged on an opposite side of the circuit board. The circuit board defines at least one through hole (102) corresponding to a position of the at least one LED. Thermal interface material (140) is filled in the at least one hole of the circuit board to thermally interconnect the at least one LED and the heat dissipation apparatus. The thermal interface material is a composition of nano-material and macromolecular material.

Abstract: A heat pipe includes an elongated casing (10), a wick (13), at least one artery mesh (12), and working medium filling in the casing. The casing has an evaporating section (101) and a condensing section (102). The wick is disposed on an inner wall of the evaporating section. The at least one artery mesh includes a large portion (121) and a small portion (122) with an outer diameter smaller than that of the large portion. The small portion is located within and contacts with the wick, and the large portion contacts with the inner wall of the condensing section of the casing. The working medium saturates the wick and the at least one artery mesh.

Abstract: A carbon nanotube composite preform includes a substrate and a plurality of carbon nanotubes formed thereon. Each carbon nanotube includes a first end adjacent to the substrate and a second end away from the substrate. Gaps between the second ends of the carbon nanotubes are bigger than gaps between the first ends thereof. The method for making the carbon nanotube composite preform includes the following steps: (a) providing a substrate; (b) forming a plurality of carbon nanotubes (e.g., a carbon nanotube array) on the substrate; (c) placing the carbon nanotubes and the substrate in a solvent for some time; (d) removing the carbon nanotubes and the substrate from the solvent; (e) drying the carbon nanotubes and the substrate to form a carbon nanotube composite preform.

Abstract: A heat pipe (10) includes a casing (11) and a composite wick structure (14). The casing includes an evaporator section (15) and a condenser section (16). The wick structure includes a plurality of grooves (142, 143) and an artery mesh (145). The grooves at the evaporator section each have a smaller groove width and a smaller apex angle (A1) than those of each of the grooves at the condenser section. A method for manufacturing the heat pipe includes: providing a casing with a plurality of grooves axially defined therein; shrinking a diameter of one portion of the casing to obtain an evaporator section of the heat pipe; placing an artery mesh to contact with an inner wall of the casing; vacuuming the casing and placing a working fluid in the casing; sealing the casing to obtain the heat pipe.

Abstract: A heat pipe (10) includes a metal casing (12) having an evaporator section (121) and a condenser section (122). A major wick structure (14) is disposed on an inner wall of the casing. At least one assistant wick structure (16) is disposed in and contacts with the major wick structure, and working medium fills in the casing and saturates the major wick structure and the at least one assistant wick structure. An average pore size of the major wick structure corresponding to the evaporator section is smaller than that of the major wick structure corresponding to the condenser section. A diameter of a cross section of the at least one assistant wick structure is smaller than a diameter of a cross section of the major wick structure, and thus the at least one assistant wick structure has a linear contact with the major wick structure.

Abstract: By dividing data entries among multiple data collections, a data collection comprising a data entry associated with a requested percentile can be determined with reference to the number of data entries within each collection. Initially, the range of values corresponding to the identified data collection can be presented as the value of the requested percentile. Should further detail be required, the value for a requested percentile can be refined by averaging the range, linearly, or otherwise, extrapolating estimated values for the data entries within the identified data collection, or sorting the actual entries according to their values. A relational database can maintain the data entries, each comprising values along one or more dimensions, and an OLAP engine component can maintain a counting of the data entries within the defined data collections.

Abstract: A heat dissipation apparatus includes a heat sink (30) and a heat spreader (10). The heat spreader includes a heating area (11) and a cooling area (13), and defines a vapor chamber (16) therein. A plurality of artery meshes (151) are arranged in the vapor chamber and extend from the heating area towards the cooling area. A working medium is contained in the artery meshes. The artery meshes are located between wick structures (15a, 15b) attached to a top cover (14) and a base plate (12) of the heat spreader, respectively, and contact therewith.

Abstract: A heat spreader includes a bottom wall (12) and a cover (14) hermetically connected to the bottom wall. Cooperatively the bottom wall and the cover define a space (11) therebetween for receiving a working fluid therein. A wick structure (15) is received in the space and thermally interconnects the bottom wall and the cover. The wick structure includes at least a carbon nanotube array, which can conduct heat from the bottom wall to the cover and draw condensed liquid of the working fluid from the cover toward the bottom wall.

Abstract: An emergency lamp includes a base, a lamp shade combined with the base, a control circuit mounted in the base, at least one storage battery mounted in the base, a light gathering board mounted in the lamp shade, a plurality of light emitting members mounted on the light gathering board, a light permeable board mounted on the lamp shade, and an optical energy board mounted on the lamp shade. Thus, the electric power of the emergency lamp is supplied by the optical energy board without needing an external electric power supply, so that the emergency lamp has an energy-saving effect. In addition, the emergency lamp has energy-saving, emergency illuminating and emergency direction indicating functions, thereby enhancing the versatility of the emergency lamp.

Abstract: An optical pickup head and an electromagnetic actuating device thereof are provided. The electromagnetic actuating device is used to move an objective lens carrier having an objective lens assembly to form an optical pickup head. The electromagnetic actuating device includes at least a magnet, at least a coil, and at least a yoke. The magnet is spaced apart from the objective lens carrier by a distance, and the coil is disposed at the objective lens carrier, for generating an electromagnetic force to interact with the magnet. The yoke is spaced apart from the objective lens carrier by a distance, in which the yoke has a protruding part that extends towards the objective lens carrier and is used to attract magnetic flux lines produced by the magnet, and thus making the magnetic flux that passes through the coil be distributed evenly.

Abstract: A light-emitting diode (LED) assembly includes a circuit board (10), at least one LED (20) being electrically connected with and being arranged on a side of the circuit board, and a heat dissipation apparatus (40) being arranged on an opposite side of the circuit board. The circuit board defines at least one through hole (102) corresponding to a position of the at least one LED. Thermal interface material (140) is filled in the at least one hole of the circuit board to thermally interconnect the at least one LED and the heat dissipation apparatus. The thermal interface material is a composition of nano-material and macromolecular material.