Abstract: An experimental device and method for supercritical CO2/H2O mixed fluid huff and puff for shale oil development includes a CO2 storage tank, a water vapor generator, a mixing vessel, and a core holder; the CO2 storage tank and the water vapor generator are in communication with the mixing vessel; a first pressure gauge and a hygronom are connected to an upper end of the mixing vessel, and a displacement pump is connected to a lower end of the mixing vessel; the mixing vessel is connected to an inlet end of the core holder; the core holder is connected to an inlet end of a drying pipe, and the measuring cylinder is disposed upside down in a liquid containing dish, where the liquid containing dish and the measuring cylinder are filled with a saturated sodium carbonate solution.

Abstract: The present disclosure discloses a method for automatically identifying south troughs by improved Laplace and relates to the technical field of meteorology. The method includes the following steps: acquiring grid data of a geopotential height field; calculating a gradient field of the geopotential height field in an x direction; searching for a turning point where a gradient value turned from being negative to being positive, and cleaning the gradient field; calculating a divergence of the x direction to obtain an improved Laplacian numerical value L?; performing 0,1 binarization processing on the L? to obtain a black-and-white image and a plurality of targets of potential troughs, merging the black-and-white image and the plurality of targets of the potential troughs by expansion, recovering original scale through erosion, and selecting an effective target through an angle of direction of a contour and an axial ratio.

Abstract: A rotary push-pull rope retractor includes a top cover, a follower, a seat, a control member and a base. The seat is fixedly installed on the base. An upper surface of the seat is provided with an elastic member and a pawl connected with the elastic member. The follower includes a ratchet and a rope bin. The pawl is located on one side of the ratchet and engaged with the ratchet. The control member is slidably arranged on the upper surface of the seat, and the control member can push the pawl to move away from the ratchet and compress the elastic member to separate the pawl from the ratchet, so as to switch the meshing mode or the free mode of the rotary push-pull rope retractor. The top cover is arranged above the seat, and the top cover and the follower are connected in linkage.

Abstract: A rotary push-pull rope retractor includes a top cover, a follower, a seat, a control member and a base. The seat is fixedly installed on the base. An upper surface of the seat is provided with an elastic member and a pawl connected with the elastic member. The follower includes a ratchet and a rope bin. The pawl is located on one side of the ratchet and engaged with the ratchet. The control member is slidably arranged on the upper surface of the seat, and the control member can push the pawl to move away from the ratchet and compress the elastic member to separate the pawl from the ratchet, so as to switch the meshing mode or the free mode of the rotary push-pull rope retractor. The top cover is arranged above the seat, and the top cover and the follower are connected in linkage.

Abstract: A device for removing flashes of a wheel blank includes two layers of turnover mechanisms, wherein the lower-layer turnover mechanism realizes the initial positioning of a wheel and has the function of removing the flashes at both the inner side and the outer side of an inner rim of the wheel, and the upper-layer turnover mechanism realizes the secondary positioning of the wheel and has the function of removing the flashes on the outer rim side. By means of the two layers of turnover mechanisms, the flashes on the front face and end face of a wheel blank outer rim wheel lip, and the inner side and outer side of the inner rim are removed, and coaxial processing conversion and orderly takt connection are ensured. The disclosure also provides a method for removing flashes of a wheel blank.

Abstract: The present invention provides a method for reducing interference to liquid crystal touch screen from touch driving signal, wherein the liquid crystal touch screen comprises a display composed of multiple pixel horizontal axes, multiple parallel first electrodes and multiple parallel second electrodes, multiple intersections are formed by the first electrodes and the second electrodes, the method comprising: concurrently providing a sine wave driving signal to at least one of the first electrodes; and sensing the sine wave driving signal via the multiple second electrodes, wherein the multiple pixel horizontal axes are refreshed sequentially during the time interval of providing sine wave driving signal.

Abstract: A method and device for controlling in-plane interference of a liquid crystal touch screen and a display system are provided. By detecting a current image of a display panel of the liquid crystal touch screen in real time, and when the image that causes the in-plane interference of the liquid crystal touch screen is detected, inverting original polarities of data voltages input to at least a portion of data lines of the display panel, so that change directions of coupled voltages of adjacent two of the data lines with respect to a common electrode are opposite to each other, solving problems of in-plane interference for the liquid crystal touch screen.

Abstract: A device for removing flashes of a wheel blank includes two layers of turnover mechanisms, wherein the lower-layer turnover mechanism realizes the initial positioning of a wheel and has the function of removing the flashes at both the inner side and the outer side of an inner rim of the wheel, and the upper-layer turnover mechanism realizes the secondary positioning of the wheel and has the function of removing the flashes on the outer rim side. By means of the two layers of turnover mechanisms, the flashes on the front face and end face of a wheel blank outer rim wheel lip, and the inner side and outer side of the inner rim are removed, and coaxial processing conversion and orderly takt connection are ensured. The disclosure also provides a method for removing flashes of a wheel blank.

Abstract: The present disclosure proposes a circuit for reducing power consumption and a liquid crystal. The circuit includes a transformer, a first output loop, and a second output loop. The transformer includes a secondary driving winding with a first output terminal, a ground terminal, and a second output terminal arranged between the first output terminal and the ground terminal. When a voltage output by the second output terminal is less than a predetermined voltage, the first output loop is conducted and the second output loop is terminated. When a voltage output by the second output terminal is greater than the predetermined voltage, the first output loop is terminated and the second output loop is conducted.

Abstract: A method and device for controlling in-plane interference of a liquid crystal touch screen and a display system are provided. By detecting a current image of a display panel of the liquid crystal touch screen in real time, and when the image that causes the in-plane interference of the liquid crystal touch screen is detected, inverting original polarities of data voltages input to at least a portion of data lines of the display panel, so that change directions of coupled voltages of adjacent two of the data lines with respect to a common electrode are opposite to each other, solving problems of in-plane interference for the liquid crystal touch screen.

Abstract: Embodiments of the disclosure disclose a LED backlight driving circuit, including a power source, LED strings, a buck circuit, and a LED controller. The LED strings include at least one string of LED lamps, a positive terminal thereof and the power source are electrically connected. The buck circuit and the LED strings are electrically connected. The LED controller and the buck circuit are electrically connected. The LED controller controls the power source to provide electricity to the LED strings and controls the buck circuit to store energy during a first period. The LED controller controls the buck circuit to provide electricity to the LED strings during a second period. The disclosure further provides a liquid crystal display. The disclosure has the advantage of preventing the LED backlight driving circuit from being damaged easily.

Abstract: An LED backlight driving circuit includes a first and a second LED strings; a first and a second capacitors; a boosted circuit having an input connected to a power source and an output connected to the first and second capacitors and the first and second LED strings; an LED controller electrically connected to the boosted circuit so as to control, in a first period of an operation cycle, the boosted circuit to supply power to the first branch and to charge the first capacitor and also to supply power to the second branch and to charge the second capacitor; and in a second period, LED controllers controls the boosted circuit to cut off the first and second branches to make the first and second capacitors discharge to the first and second branches, respectively. Also provided is a liquid crystal display that includes the LED backlight driving circuit.

Abstract: Disclosed herein are methods of treating Canavan disease in a subject through restoring ASPA enzymatic activities in the subject by expressing exogenous wild type ASPA gene in the brain of the subject. Also disclosed are a process of producing neural precursor cells, including NPCs, glial progenitor cells and oligodendroglial progenitor cells, which express an exogenous wild type ASPA gene and the neural precursor cells produced by this process.

Abstract: This invention discloses a LED backlight driving circuit including: a first and a second LED strings; a first and a second capacitors; a boosted circuit, an input of which is connected to the power source and an output of which is connected to the first and the second capacitors, and the first and the second LED strings; an LED controller, electrically connected to the boosted circuit, in the first period is used for controlling the boosted circuit to supply power to the first branch and to charge the first capacitor and the same as to the second branch and the second capacitor; in the second period it is used for controlling the boosted circuit to cut off the first branch to make the first capacitor charge to the first branch and the same as to the second branch and the second capacitor. This invention also discloses a liquid crystal display.

Abstract: The present invention provides a backlighting dimming circuit and a liquid crystal display. The backlighting dimming circuit includes an external dimmer module (200) that receives a pulse dimming signal (PWM) to control a current regulation tube (Q1) included in the external dimmer module (200) to conduct on or cut off so as to control an LED light bar (300) to conduct on or cut off. A constant current driving chip (100) needs only one first terminal pin (1) provided thereto and through comparison of a voltage level at the first terminal pin (1) with a preset protection voltage level built in the constant current driving chip (100), an operation of conducting on or cutting of the LED light bar (300) can be carried out so that the number of the terminal pins necessary for the constant current driving chip can be reduced and thus, a packaging size of the constant current driving chip is reduced and the efficiency of tuning and testing of the backlighting dimming circuit is increased.

Abstract: The present invention provides a TV power supply, which comprises a main power supply and a voltage conversion circuit electrically connected to the main power supply. The main power supply comprises a first output terminal for outputting a backlight driving voltage and a second output terminal for outputting a motherboard driving voltage. The voltage conversion circuit is configured to convert the backlight driving voltage or the motherboard driving voltage to a standby voltage. The voltage conversion circuit comprises an input terminal electrically connected to the first output terminal or the second output terminal and a third output terminal for outputting the standby voltage.

Abstract: Provided is a backlight driving circuit, comprising voltage conversion circuit, PMW controller, zener diode, first electrical switch, optocoupler unit, boost switch and light source drive assembly. The PMW controller controls an output of the voltage conversion circuit. The light source drive assembly is connected to the boost switch and a light source to control on and off of the boost switch. A cathode of the zener diode is connected to the optocoupler unit, and an anode of the zener diode is connected to a control end of the first electric switch, and a first end of the first electrical switch is connected to the PWM controller, and a second end of the first electrical switch is grounded, and as the boost switch is short, a current outputted by the voltage conversion circuit increases, and the optocoupler unit breaks the zener diode down.

Abstract: An LED backlight driving circuit includes a first and a second LED strings; a first and a second capacitors; a boosted circuit having an input connected to a power source and an output connected to the first and second capacitors and the first and second LED strings; an LED controller electrically connected to the boosted circuit so as to control, in a first period of an operation cycle, the boosted circuit to supply power to the first branch and to charge the first capacitor and also to supply power to the second branch and to charge the second capacitor; and in a second period, LED controllers controls the boosted circuit to cut off the first and second branches to make the first and second capacitors discharge to the first and second branches, respectively. Also provided is a liquid crystal display that includes the LED backlight driving circuit.

Abstract: The present disclosure discloses a DC to DC boost converter, comprising a boosted circuit, a protecting circuit, a detecting circuit, a feedback control circuit, and a feedback circuit. The boosted circuit outputs voltage to the outside through the protecting circuit, the protecting circuit controls the boosted circuit to output voltage to the outside according to the current output from the boosted circuit. The detecting circuit detects the output voltage of the protecting circuit and controls whether the feedback control circuit proceeds the feedback control to the boosted circuit according to the feedback voltage of the feedback circuit or not according to the detected output voltage. The DC to DC boost converter adds the protecting circuit and the detecting circuit, which completely shuts the output down while the output is short, thus achieving short-protecting circuit and reducing power consumption.