Abstract: The ball game camera speed measuring machine of the present invention comprises a PCB board, a speed measuring unit, a camera unit, a memory card, a display panel, a loudspeaker, a power source, an start/stop signal receiving unit configured to receive a start/stop signal, and a communication transmission unit configured to transmit a video signal and a speed signal. The PCB board is connected with the start/stop signal receiving unit, the speed measuring unit, the camera unit, the memory card, the display panel, the loudspeaker and the communication transmission unit respectively. The power source supplies power to the loudspeaker, the PCB board, the speed measuring unit and the camera unit. The camera speed measuring machine simultaneously displays in real time a ball speed on a dynamic video.

Abstract: Embodiments of the present invention disclose a resource allocation method, a first node, and a second node. The method includes the following steps: A first node receives downlink control information (DCI) from a second node, where the DCI includes resource indication information, and the resource indication information is used to indicate a transmission resource allocation manner; the first node determines a first resource allocation manner based on the resource indication information, where the first resource allocation manner is used to allocate a transmission resource greater than one narrowband; the first node determines an allocated transmission resource based on the first resource allocation manner and the resource indication information; and the first node transmits data by using the allocated transmission resource.

Abstract: A method and apparatus for synchronously playing an image and an audio are provided. The method comprises: acquiring a play service request sent by a broadcast terminal; acquiring play image data and audio data corresponding to the play service request, the play image data being divided into a plurality of groups based on played content; and sending the play image data, the audio data, and information for determining a first corresponding relationship between each of the groups and an attribute of the audio data to the broadcast terminal, to enable the broadcast terminal to perform synchronization on the play image data and the audio data correspondingly to synchronously play the play image data and the audio data. Establishing the corresponding relationship between the audio data and the played content of each of the groups enables the broadcast terminal to accurately synchronize the played audio content and the displayed play image.

Abstract: This utility model provides a roller-type electronic watch comprising a watch body and a watch strap. The watch body includes a watch case, rollers, drive devices, a control circuit board and a battery. A character or pattern is set on the peripheral surfaces of the rollers. The control circuit board controls the drive devices to move. The drive devices drive the rollers to rotate, so that the peripheral surfaces of the rollers display information from the window of the watch case. The roller-type electronic watch of this utility model has a unique display manner and has special sporty feel.

Abstract: An apparatus and a method for in-situ testing impact strength of a micro-structure are provided. In one embodiment, the apparatus includes: a flexible beam, one end of which being fixed; an impact mass block disposed at the other end of the flexible beam and being for exerting an impact on the micro-structure; and a locking member including a beam arm and a plurality of locking teeth. The beam arm is perpendicular to the flexible beam and one end of the beam arm is fixed, and the plurality of locking teeth are distributed at intervals along the beam arm, such that the other end of the flexible beam is engaged to one of the plurality of locking teeth when the flexible beam is loaded.

Abstract: We provide methods and apparatus for preparing crystalline-clad and crystalline core optical fibers with minimal or no breakage by minimizing the influence of thermal stress during a liquid phase epitaxy (LPE) process as well as the fiber with precisely controlled number of modes propagated in the crystalline cladding and crystalline core fiber via precisely controlling the diameter of crystalline fiber core with under-saturated LPE flux. The resulting crystalline cladding and crystalline core optical fibers are also reported.

Abstract: A method of selectively inhibiting the overexpression of mPGES-1 in a subject in need thereof includes a step of administering an effective amount of a selective mPGES-1 inhibitor or a salt thereof to the subject. A method of treating a subject suffering from a disease associated with an overexpression of mPGES-1 and having a risk of cardiovascular event includes the step of administering an effective amount of a selective mPGES-1 inhibitor to the subject.

Abstract: We provide methods and apparatus for preparing crystalline-clad and crystalline core optical fibers with minimal or no breakage by minimizing the influence of thermal stress during a liquid phase epitaxy (LPE) process as well as the fiber with precisely controlled number of modes propagated in the crystalline cladding and crystalline core fiber via precisely controlling the diameter of crystalline fiber core with under-saturated LPE flux. The resulting crystalline cladding and crystalline core optical fibers are also reported.

Abstract: We provide methods and apparatus for preparing crystalline-clad and crystalline core optical fibers with minimal or no breakage by minimizing the influence of thermal stress during a liquid phase epitaxy (LPE) process as well as the fiber with precisely controlled number of modes propagated in the crystalline cladding and crystalline core fiber via precisely controlling the diameter of crystalline fiber core with under-saturated LPE flux. The resulting crystalline cladding and crystalline core optical fibers are also reported.

Abstract: We provide methods and apparatus for preparing crystalline-clad and crystalline core optical fibers with minimal or no breakage by minimizing the influence of thermal stress during a liquid phase epitaxy (LPE) process as well as the fiber with precisely controlled number of modes propagated in the crystalline cladding and crystalline core fiber via precisely controlling the diameter of crystalline fiber core with under-saturated LPE flux. The resulting crystalline cladding and crystalline core optical fibers are also reported.

Abstract: The ball game camera speed measuring machine of the present invention comprises a PCB board, a speed measuring unit, a camera unit, a memory card, a display panel, a loudspeaker, a power source, an start/stop signal receiving unit configured to receive a start/stop signal, and a communication transmission unit configured to transmit a video signal and a speed signal. The PCB board is connected with the start/stop signal receiving unit, the speed measuring unit, the camera unit, the memory card, the display panel, the loudspeaker and the communication transmission unit respectively. The power source supplies power to the loudspeaker, the PCB board, the speed measuring unit and the camera unit. The camera speed measuring machine simultaneously displays in real time a ball speed on a dynamic video.

Abstract: We provide methods and apparatus for preparing crystalline-clad and crystalline core optical fibers with minimal or no breakage by minimizing the influence of thermal stress during a liquid phase epitaxy (LPE) process as well as the fiber with precisely controlled number of modes propagated in the crystalline cladding and crystalline core fiber via precisely controlling the diameter of crystalline fiber core with under-saturated LPE flux. The resulting crystalline cladding and crystalline core optical fibers are also reported.

Abstract: We provide methods and apparatus for preparing crystalline-clad and crystalline core optical fibers with minimal or no breakage by minimizing the influence of thermal stress during a liquid phase epitaxy (LPE) process as well as the fiber with precisely controlled number of modes propagated in the crystalline cladding and crystalline core fiber via precisely controlling the diameter of crystalline fiber core with under-saturated LPE flux. The resulting crystalline cladding and crystalline core optical fibers are also reported.

Abstract: A power circuit, control method, power system, and package structure of power circuit are disclosed. The power circuit includes a quasi-cascade power unit. The quasi-cascade power unit includes a normally-on switch, normally-off switch, control unit, first switch unit and second switch unit. The normally-off switch is electrically connected to the normally-on switch in series. The first end and the third end of the control unit are electrically connected to the control end of the normally-off switch and the control end of the normally-on switch, respectively. The first end and the second end of the first switch unit are electrically connected to the control end of the normally-on switch and the second end of the normally-off switch, respectively. The first end and the control end of the second switch unit are electrically connected to the second end of the control unit and the second end of the normally-on switch, respectively.

Abstract: The present disclosure relates to a gas sensor, including: a gas collecting chamber including: (a) a nanoporous wall including alumina, on a portion of the gas collecting chamber in the near vicinity of the solid propellant fuel; a micro pump attached to the gas collecting chamber; and a gas analysis device connected to the gas collecting chamber. The gas analysis device measures both type and concentration of gases collected in the gas collecting chamber via the nanoporous wall, the gases measured being selected from the group consisting of CO, CO2, NO, N2O, NO2 and combinations thereof. The present disclosure also relates to a method of sensing propellant degradation in solid fuel and a method of using a gas collecting chamber to sense such degradation.

Abstract: A foldable ball net frame includes a main pipe, a foldable net frame, a stop ring, support poles, and a net. The foldable net frame includes an upper collar and a lower collar. One end of a main support arm of the foldable net frame is hingedly connected to the upper collar, and another end is hingedly connected to one end of a secondary support arm. Another end of the secondary support arm is hingedly connected to the lower collar. The stop ring is disposed between the upper nest and the lower nest and locked on the main pipe. The support poles and the main support arms are coaxially structured. The support poles are disposed at the distal ends of the main support arms, respectively. The net has buttonholes and is detachably connected to the distal ends of the support poles therethrough.

Abstract: A power circuit, control method, power system, and package structure of power circuit are disclosed. The power circuit includes a quasi-cascade power unit. The quasi-cascade power unit includes a normally-on switch, normally-off switch, control unit, first switch unit and second switch unit. The normally-off switch is electrically connected to the normally-on switch in series. The first end and the third end of the control unit are electrically connected to the control end of the normally-off switch and the control end of the normally-on switch, respectively. The first end and the second end of the first switch unit are electrically connected to the control end of the normally-on switch and the second end of the normally-off switch, respectively. The first end and the control end of the second switch unit are electrically connected to the second end of the control unit and the second end of the normally-on switch, respectively.

Abstract: Leakage current through stray or parasitic capacitance (which is particularly large in devices such as photovoltaic cell arrays and which are damaged by such leakage currents) due to common mode switching noise in a full bridge single phase power converter is reduced at high frequencies by magnetically coupling the two phase legs on the AC side of the power converter and connecting mid points of the AC and DC sides of the power converter and is reduced at low frequencies by use of a feedback arrangement that modifies sinusoidal modulation of the switches of the full bridge converter to function as an active filter. The magnetic coupling for the two phase legs is designed in a simple manner to avoid saturation based on volt-second considerations.

Abstract: A foldable ball net frame includes a main pipe, a foldable net frame, a stop ring, support poles, and a net. The foldable net frame includes an upper nest and a lower nest. One end of a main support arm of the foldable net frame is hingedly connected to the upper nest, and another end is hingedly connected to one end of a secondary support arm. Another end of the secondary support arm is hingedly connected to the lower nest. The stop ring is disposed between the upper nest and the lower nest and locked on the main pipe. The support poles and the main support arms are coaxial. The support poles are disposed at the distal ends of the main support arms, respectively. The net has buttonholes. The net is detachably connected to the distal ends of the support poles through the buttonholes.

Abstract: A spectrometric system, including: a solid rocket fuel; an illuminating source including at least two wavelengths within a spectral range from 100 nm to 200,000 nm, a first wavelength or range of wavelengths having a distinguishably greater or lesser absorbance for the stabilizer than for components of the propellant, and a second wavelength or range of wavelengths having an absorbance for the stabilizer not distinguishably different than the absorbance for the components of the propellant, an illuminating fiber to illuminate a surface of a solid rocket fuel; a collecting fiber to collect back scattered, reflected or transmitted light being given off from the surface of the solid rocket fuel; and a spectrometer to determine the light intensities of the two wavelengths of the back scattered, reflected or transmitted light collected.