Abstract: A communication device for estimating the azimuth angle includes a receiving module and an estimating module. The receiving module is configured to sequentially switch several azimuth angles to receive a first signal transmitted at the first transmitting angle from a first transmitting module of the first communication device. The estimation module is configured to calculate several signal powers of the first signal received by the receiving module at the several azimuth angles; to determine the maximum signal power among the several signal powers; to determine the pre-judged AOD according to the azimuth angle of the maximum signal; and to calculate the AOD of the associated first signal based on the pre-judged AOD and at least one azimuth angle adjacent to the pre-judged AOD among the several azimuth angles.

Abstract: The present invention discloses a method of infrared spectrometric measurement of tunnel gas employing a gas measurement system including a gas collection unit, a gas analysis unit and a positioning indication unit for measuring the gas in the tunnel. The method performs sequential steps of installing the gas measurement system, starting the positioning indication unit for positioning one of the detection regions in the tunnel space, sampling the gas in the detection region through the gas collection unit, analyzing the gas by the gas analysis unit, generating a gas analysis result, and determining whether all of the detection regions are completed.

Abstract: A communication device for estimating the azimuth angle includes a receiving module and an estimating module. The receiving module is configured to sequentially switch several azimuth angles to receive a first signal transmitted at the first transmitting angle from a first transmitting module of the first communication device. The estimation module is configured to calculate several signal powers of the first signal received by the receiving module at the several azimuth angles; to determine the maximum signal power among the several signal powers; to determine the pre-judged AOD according to the azimuth angle of the maximum signal; and to calculate the AOD of the associated first signal based on the pre-judged AOD and at least one azimuth angle adjacent to the pre-judged AOD among the several azimuth angles.

Abstract: The present invention discloses a method of infrared spectrometric measurement of tunnel gas employing a gas measurement system including a gas collection unit, a gas analysis unit and a positioning indication unit for measuring the gas in the tunnel. The method performs sequential steps of installing the gas measurement system, starting the positioning indication unit for positioning one of the detection regions in the tunnel space, sampling the gas in the detection region through the gas collection unit, analyzing the gas by the gas analysis unit, generating a gas analysis result, and determining whether all of the detection regions are completed.

Abstract: Disclosed herein is a method of producing a polyaniline zirconia nanocomposite, and the uses of the thus produced polyaniline zirconia nanocomposite for the treatment of wastewater. The polyaniline zirconia nanocomposite is characterized in having a particle size of about 0.3 to 50 ?m in diameter, an isoelectric point at about pH 6.2, and is capable of reducing at least 99% of the pathological microorganism and at least 60% of the phosphate in the wastewater after coming into contact with wastewater for 24 hrs and 12 hrs, respectively.

Abstract: Disclosed herein is a method of producing a polyanilne zircornia nanocomposite, and the uses of the thus produced polyanilne zircornia nanocomposite for the treatment of wastewater. The polyanilne zircornia nanocomposite is characterized in having a particle size of about 0.3 to 50 ?m in diameter; an isoelectric point at about pH 6.2, and is capable of reducing at least 99% of the pathological microorganism and at least 60% of the phosphate in the wastewater after coming into contact with wastewater for 24 hrs and 12 hrs, respectively.

Abstract: A portable electronic device includes a main body, a battery module, at least a cover, a latch, a resilient member and a knob. The battery module is connected to the main body. At least a cover is connected to the main body. The latch is to lock or unlock the battery module and the at least a cover to the main body. The resilient member has an end connected with the latch for recovering the latch to an original position. The knob is connected to the latch and exposed by the main body for controlling the latch to lock or unlock the battery module and the at least a cover.

Abstract: A portable electronic device includes a main body, a battery module, at least a cover, a latch, a resilient member and a knob. The battery module is connected to the main body. At least a cover is connected to the main body. The latch is to lock or unlock the battery module and the at least a cover to the main body. The resilient member has an end connected with the latch for recovering the latch to an original position. The knob is connected to the latch and exposed by the main body for controlling the latch to lock or unlock the battery module and the at least a cover.

Abstract: A dental implant device is adapted for use in dental implant operations to engage the dental prosthesis. The dental implant device includes a hollow main body and an external thread. The hollow main body has top and bottom ends, an inner peripheral surface disposed between the top and bottom ends and defining a through hole extending through the top and bottom ends, and an outer peripheral surface disposed between the top and bottom ends and surrounding the inner peripheral surface. The external thread is provided on the outer peripheral surface of the main body.

Abstract: A control system with computer based host includes a first device, a computer based host is electrically connected to the first device. And a second device is electrically connected to the computer based host, wherein the first device has a control right to utilize said second device.

Abstract: A trunk or briefcase that may be pulled or pushed to move, the top part of the telescopic lever unit may be accommodated in a top hood, the top hood being made of a soft plastic material, with its surrounding edge sewed onto the outside of the trunk or briefcase, so that when the trunk or briefcase is opened, there will be no hindrance caused by the material of the top hood, and that the hood may be opened to its fullest to facilitate the user in taking out or putting in personal articles.

Abstract: A method for asserting signals onto an output line connected to a passive external pull-up resistor by using a fast edge rate signal driver is provided. The fast edge rate signal driver has first, second and third pull-down predrivers, first, second and third pull-up predrivers, first and second delay elements, and first, second and third output devices, and a PMOS and an NMOS current controller, and each of the output devices has one output terminal coupled to each other forming the output line.

Abstract: A retracting handle bar including a plurality of tubes that slide one inside another, a plurality of lock devices for locking the tubes in the extended position, and a press bar for unlocking the lock devices, wherein: each of the lock devices includes an axial member mounted in one end of an antecedent tube, a retainer strip pivoted to the axial member, and a socket mounted around the retainer strip and the axial member, the axial member having a body with a taper hole at one end, and an extension rod at an opposite end, the body of the axial member being inserted into a second tube, the axial extension rod of the axial member being inserted into the antecedent tube, the retainer strip having a fixed end pivoted to the axial extension rod of the axial member inside the antecedent tube, and a free end disposed inside the antecedent tube, the free end of the retainer rod having a raised portion forced into engagement with a locating hole in the antecedent tube, the socket being disposed inside the second tube,

Abstract: A wheel assembly mounting structure includes a trunk body having a back frame covered with a back cover, which back frame having an arched bottom end defining with the bottom side of the trunk body two wheel assembly mounting chambers, two wheel assembly mounting frames respectively mounted in the wheel assembly mounting chambers inside the trunk body and bilaterally attached to the arched bottom end of the back frame at an inner side and having a respective mounting groove fitting the periphery of the arched bottom end of the back frame, and two wheel assemblies respectively mounted in wheel assembly mounting chambers outside the trunk body and bilaterally attached to the arched bottom end of the back frame at an outer side and respectively fixed to the wheel assembly mounting frames by fastening elements.

Abstract: A collapsible hand cart including a base frame unit, a telescopic handle pivoted to the base frame unit in the middle, two steering mechanisms mounted on the base frame unit at two opposite sides for moving the base frame unit by the telescopic handle, each steering mechanism including a wheel holder turned about a pivot on the base frame unit to hold a roller, a movable member turned about a pivot on the wheel holder, and a link having a pivot hole at one end connected to the movable member and the base frame unit by a pivot and an elongated sliding slot connected to a bolt on a slide, which slide is moved vertically in a longitudinal sliding slot on the telescopic handle, wherein when the hand cart is collapsed, the wheel holders and movable members and links of the steering mechanisms and the telescopic handle are received together in the X-axis direction; when the telescopic handle is lifted to the Z-axis direction and extended out, the links are lifted, causing the movable members to force the wheel hold

Abstract: A retractable handle assembly including a mounting base fixed to a suitcase, two sleeves fixed to the mounting base, two retracting tubes inserted into the sleeves, each retracting tube having a first pin hole and a second pin hole, two locking devices mounted in an opening on the mounting base, each locking device having an outward pin for insertion into the first pin hole of second pin hole of one retracting tube to lock the retracting tubes in the retracted or extended position, a control button, and spring-supported link means connected between the control button and the locking devices, whereby when the control button is moved forwards, the locking devices are pulled inwards by the spring-supported link means to disconnect the respective pins from the first or second pin holes of the retracting tubes for permitting the retracting tubes to be moved between the retracted position and the extended position.

Abstract: A trunk includes a trunk body reinforced by a lining and a supporting frame on the inside and defines a storage chamber. The trunk body includes a top notch, a front cover covering the storage chamber at one side, a metal frame fastened around the periphery of the storage chamber at an opposite side relative to the front cover, and a back cover fixedly fastened to the metal frame and coveting the storage chamber opposite to the front cover. The metal frame has a top recessed portion defining, with the top notch, a handle mounting space. A handle mounting frame assembly is mounted in the handle mounting spaced and includes an upper handle holder and a bottom handle holder. The bottom handle holder includes a recessed portion and the upper handle holder includes a recessed portion fitted into the recessed portion on the bottom handle holder.