Abstract: The present disclosure provides a direct current (DC) transformer error detection apparatus for a pulsating harmonic signal, including a DC and pulsating harmonic current output module and an external detected input module, where the DC and pulsating harmonic current output module outputs a DC and a DC superimposed pulsating harmonic current to an internal sampling circuit and a self-calibrated standard resistor array; and the internal sampling circuit converts the input DC and the input DC superimposed pulsating harmonic current into a voltage signal, and sends the voltage signal to an analog-to-digital (AD) sampling and measurement component through a front-end conditioning circuit and a detected input channel. The DC transformer error detection apparatus can complete self-calibration for measurement of the DC and the pulsating harmonic signal on a test site.

Abstract: A lost circulation detection device includes a first detection member and a second detection member, a first signal transmitter and a first signal receiver are disposed on the first detection member, and the first signal transmitter transmits a signal along an axial direction of a rockshaft so that the first signal receiver acquires data information of drilling fluid in the axial direction of the rockshaft; a fluid channel penetrating through the second detection member is disposed in the second detection member, and the fluid channel is configurable to be in communication with the rockshaft; a second signal transmitter and a second signal receiver are disposed oppositely on two sides of the fluid channel, and the second signal transmitter transmits a signal along a center line of a second accommodating groove, so that the second signal receiver acquires data information of drilling fluid in a circumferential direction of the rockshaft.

Abstract: A mattress centrifugal dehydration device which includes a frame body, a dehydration assembly, and a second driving structure. The dehydration assembly has a dehydration rack, a stop member, and a first driving structure. The dehydration rack is rotatably arranged on the frame body, and a loading member of a mattress is arranged on the dehydration rack, and the loading member has a loading surface. The stop member is arranged above the loading member, the stop member has a stop surface, and an accommodating space of the mattress is formed between the stop surface and the loading surface; the first driving structure is arranged on the dehydration rack and acts on the stop member to drive it to be close to or away from the loading member so as to reduce or enlarge the accommodating space.

Abstract: A well cementing method is described for improving cementing quality by controlling the hydration heat of cement slurry. By controlling the degree and/or rate of hydration heat release from cement slurry, the method improves the hydration heat release during formation of cement with curing of cement slurry, improves the binding quality between the cement and the interfaces, and in turn improves the cementing quality at the open hole section and/or the overlap section. The cementing method improves cementing quality of oil and gas wells and reduces the risk of annular pressure.

Abstract: In an embodiment, a power switch controller for driving a back-to-back power switch includes: an amplifier having a supply terminal configured to receive a supply voltage, an output configured to be coupled to a gate terminal of the back-to-back power switch, a first input configured to be coupled a source terminal of the back-to-back power switch, and a second input coupled to the output of the amplifier. The amplifier is configured to generate an output voltage at the output of the amplifier, the output voltage being an offset voltage higher than a voltage at the first input of the amplifier.

Abstract: An embodiment comprises and apparatus having an image capture device with an image axis and a gyroscope operable to indicate the orientation of the image axis. An embodiment of a capsule endoscopy system comprises an imaging capsule and an external unit. The imaging capsule may comprise an image capture device having an image axis and a gyroscope operable to indicate the orientation of the image axis. The external unit may comprise a gyroscope operable to indicate an orientation of a subject and a harness wearable by a subject and operable to align the gyroscope with the subject. The imaging capsule may send and image to an external unit for processing and display, and the external unit may provide for calculation of the image-axis orientation relative to the body.

Abstract: In an embodiment, a power switch controller for driving a back-to-back power switch includes: an amplifier having a supply terminal configured to receive a supply voltage, an output configured to be coupled to a gate terminal of the back-to-back power switch, a first input configured to be coupled a source terminal of the back-to-back power switch, and a second input coupled to the output of the amplifier. The amplifier is configured to generate an output voltage at the output of the amplifier, the output voltage being an offset voltage higher than a voltage at the first input of the amplifier.

Abstract: A broadband low-profile dual-linearly polarized antenna for a OneLTE two-in-one platform and an antenna array device formed therefrom are provided that can realize low-profile and ultra-broadband and have such advantages as simple structure, neat appearance, easy engineering implementation, and suitability for mass production. The broadband low-profile dual-linearly polarized antenna can include (1) a radiating portion that can include a dielectric substrate, printed folded dipoles spaced apart on an upper surface of the dielectric substrate, first coupled parasitic elements on a lower surface of the dielectric substrate, and second coupled parasitic elements on the upper surface of the dielectric substrate and (2) a feed balun for feeding the radiating portion, wherein each of the printed folded dipoles can include a corresponding one of the first coupled parasitic elements and a corresponding one of the second coupled parasitic elements.

Abstract: The invention discloses an artificial epistropheus support body comprising a support. The support comprises a crown part and a body part, a top surface of the crown part forms a top profiling surface, and a bottom surface of the body part forms a bottom profiling surface; the support has a cavity inside thereof, and a micro-hole grid stent is arranged in the cavity; the cavity forms a plurality of windows on the surface of the support. The bottom end of the body part is provided with a lower fixing lug, while the upper end of the crown part is provided with an upper fixing lug; both the lower fixing lug and the upper fixing lug are provided with fixing holes. The artificial epistropheus support body possesses good stability for supporting and reconstructing, it also can prevent a prosthesis from loosening and failing after surgery.

Abstract: An embodiment comprises and apparatus having an image capture device with an image axis and a gyroscope operable to indicate the orientation of the image axis. An embodiment of a capsule endoscopy system comprises an imaging capsule and an external unit. The imaging capsule may comprise an image capture device having an image axis and a gyroscope operable to indicate the orientation of the image axis. The external unit may comprise a gyroscope operable to indicate an orientation of a subject and a harness wearable by a subject and operable to align the gyroscope with the subject. The imaging capsule may send and image to an external unit for processing and display, and the external unit may provide for calculation of the image-axis orientation relative to the body.

Abstract: The invention discloses an artificial epistropheus support body comprising a support. The support comprises a crown part and a body part, a top surface of the crown part forms a top profiling surface, and a bottom surface of the body part forms a bottom profiling surface; the support has a cavity inside thereof, and a micro-hole grid stent is arranged in the cavity; the cavity forms a plurality of windows on the surface of the support. The bottom end of the body part is provided with a lower fixing lug, while the upper end of the crown part is provided with an upper fixing lug; both the lower fixing lug and the upper fixing lug are provided with fixing holes. The artificial epistropheus support body possesses good stability for supporting and reconstructing, it also can prevent a prosthesis from loosening and failing after surgery.

Abstract: A broadband low-profile dual-linearly polarized antenna for a OneLTE two-in-one platform and an antenna array device formed therefrom are provided that can realize low-profile and ultra-broadband and have such advantages as simple structure, neat appearance, easy engineering implementation, and suitability for mass production. The broadband low-profile dual-linearly polarized antenna can include (1) a radiating portion that can include a dielectric substrate, printed folded dipoles spaced apart on an upper surface of the dielectric substrate, first coupled parasitic elements on a lower surface of the dielectric substrate, and second coupled parasitic elements on the upper surface of the dielectric substrate and (2) a feed balun for feeding the radiating portion, wherein each of the printed folded dipoles can include a corresponding one of the first coupled parasitic elements and a corresponding one of the second coupled parasitic elements.

Abstract: Disclosed herein are methods and systems for implementing a self-managed control channel. A mobile radio is a member of a talkgroup. The mobile radio has first and second receivers, and a preconfigured channel list that includes a control channel and multiple voice channels. The mobile radio monitors which voice channels are busy, and monitors the control channel using the first receiver. The mobile radio detects a session-start event. If that event is a session-start command, the mobile radio selects an idle voice channel and transmits, via the control channel, a session-start notification identifying the talkgroup and specifying the selected voice channel. If that event is receipt, via the control channel, of a session-start notification identifying the talkgroup and specifying a voice channel, the mobile radio determines whether the second receiver is tuned to that voice channel and, if not, tunes the second receiver to that voice channel.

Abstract: A warning triangle stand includes a triangular plate provided with a reflector, an LED lamp, a switch, and a power source. The reflector and the LED lamp are disposed on the front of the triangular plate. The power source is disposed inside the triangular plate. The power source is electrically connected with the LED lamp. The triangular plate includes a main plate, a left plate, a right plate, and an upper plate. The left plate and the right plate are hinged to two sides of the main plate. The upper plate is hinged to an upper end of the main plate. The switch is used to control the triangular plate to be in a folded state or an unfolded state. The triangular plate can be unfolded through the switch, which is fast and convenient. The LED lamp is used in cooperation with the reflector to provide a warning effect.

Abstract: A voltage detector operates to detect a system power supply voltage and generate a trigger signal. A control signal generator responds to the trigger signal and generates a control signal. A DC bias generator responds to the control signal by generating a DC bias. The control signal controls the DC bias to have a first value when the power supply voltage is a first voltage and have a second value when the power supply voltage is a second voltage different from the first voltage, wherein the first value is different from the second value. A dynamic DC bias is generated which can not only support a larger voltage scope, but also significantly improves signal to noise ratio. The system power supply detection may concern stop/start operation of an automobile engine.

Abstract: An embodiment comprises and apparatus having an image capture device with an image axis and a gyroscope operable to indicate the orientation of the image axis. An embodiment of a capsule endoscopy system comprises an imaging capsule and an external unit. The imaging capsule may comprise an image capture device having an image axis and a gyroscope operable to indicate the orientation of the image axis. The external unit may comprise a gyroscope operable to indicate an orientation of a subject and a harness wearable by a subject and operable to align the gyroscope with the subject. The imaging capsule may send and image to an external unit for processing and display, and the external unit may provide for calculation of the image-axis orientation relative to the body.

Abstract: Disclosed herein are methods and systems for implementing a self-managed control channel. A mobile radio is a member of a talkgroup. The mobile radio has first and second receivers, and a preconfigured channel list that includes a control channel and multiple voice channels. The mobile radio monitors which voice channels are busy, and monitors the control channel using the first receiver. The mobile radio detects a session-start event. If that event is a session-start command, the mobile radio selects an idle voice channel and transmits, via the control channel, a session-start notification identifying the talkgroup and specifying the selected voice channel. If that event is receipt, via the control channel, of a session-start notification identifying the talkgroup and specifying a voice channel, the mobile radio determines whether the second receiver is tuned to that voice channel and, if not, tunes the second receiver to that voice channel.

Abstract: A warning triangle stand includes a triangular plate provided with a reflector, an LED lamp, a switch, and a power source. The reflector and the LED lamp are disposed on the front of the triangular plate. The power source is disposed inside the triangular plate. The power source is electrically connected with the LED lamp. The triangular plate includes a main plate, a left plate, a right plate, and an upper plate. The left plate and the right plate are hinged to two sides of the main plate. The upper plate is hinged to an upper end of the main plate. The switch is used to control the triangular plate to be in a folded state or an unfolded state. The triangular plate can be unfolded through the switch, which is fast and convenient. The LED lamp is used in cooperation with the reflector to provide a warning effect.

Abstract: The present invention relates to the technical field of polymer composites, in particular to a poly (cyclic butylene terephthalate)/silicon dioxide nanocomposite, wherein the added silicon dioxide is catalyst-modified nanosilicon dioxide.

Abstract: Embodiments of a processor architecture utilizing multi-bank implementation of physical register mapping table are provided. A register renaming system to correlate architectural registers to physical registers includes a physical register mapping table and a renaming logic. The physical register mapping table has a plurality of entries each indicative of a state of a respective physical register. The mapping table has a plurality of non-overlapping sections each of which having respective entries of the mapping table. The renaming logic is coupled to search a number of the sections of the mapping table in parallel to identify entries that indicate the respective physical registers have a first state. The renaming logic selectively correlates each of a plurality of architectural registers to a respective physical register identified as being in the first state. Methods of utilizing the multi-bank implementation of physical register mapping table are also provided.