Abstract: A vacuum chamber structure of an ultra-high gravity geotechnical centrifuge device, comprising: a cylindrical shell, a convex head, a bottom head, a lower bearing sealing cover, and a vacuum pressure-bearing chamber formed by sealing a top cylindrical cylinder and an upper sealing plate with sealing rings; wherein a high-speed rotor system is enclosed in the vacuum pressure-bearing chamber, and a cylindrical cooling device is installed between an internal side of the cylindrical shell and the high-speed rotor system. An annular cooling device is provided directly above the hanging baskets on both sides of the centrifuge arm. A vibration isolation expansion joint is arranged at the intersection of the high-speed rotor system and the cylindrical cylinder, which isolates the vibration of the main engine from the vacuum chamber and greatly reduces the vibration.

Abstract: Provided is an inorganic solid waste-microbial composite curing agent and its preparation method and application. The inorganic solid waste-microbial composite curing agent consists of the following raw materials in parts by weight: steel slag, active magnesium oxide, recycled powder, stearic acid, borax, carbonic anhydrase bacteria, Bacillus subtilis, and soluble calcium salts. The preparation method includes performing granulation on steel slag, active magnesium oxide, recycled powder, stearic acid, borax, etc. into porous materials through dry rolling extrusion and compression, and loading carbonic anhydrase bacteria and Bacillus subtilis into the porous materials. By adding inorganic solid waste-microbial composite curing agent into the sludge and introducing CO2, the sludge is quickly solidified through the carbonization and microbial mineralization of inorganic solid waste.

Abstract: Provided is an inorganic solid waste-microbial composite curing agent and its preparation method and application. The inorganic solid waste-microbial composite curing agent consists of the following raw materials in parts by weight: steel slag, active magnesium oxide, recycled powder, stearic acid, borax, carbonic anhydrase bacteria, Bacillus subtilis, and soluble calcium salts. The preparation method includes performing granulation on steel slag, active magnesium oxide, recycled powder, stearic acid, borax, etc. into porous materials through dry rolling extrusion and compression, and loading carbonic anhydrase bacteria and Bacillus subtilis into the porous materials. By adding inorganic solid waste-microbial composite curing agent into the sludge and introducing CO2, the sludge is quickly solidified through the carbonization and microbial mineralization of inorganic solid waste.

Abstract: A non-invasive time domain reflection probe calibration method includes: using different volume ratio of ethanol and deionized water mixed solution to calculate a test target's medium weight coefficient and waveguide length of the non-invasive time domain reflection probes; using different concentrations of NaCl solutions to calibrate a waveguide geometric dimensioning of the non-invasive time domain reflection probes; preparing compacted soil samples with known different moisture contents and densities, and calibrating a correlation parameter of compacted soil samples' dielectric constant and conductivity with moisture content and density. The method not only determines the sensitivity of the test target medium of the non-invasive time domain reflection probes, but also obtains the waveguide length and geometric dimensioning of the probe, and realizes an accurate test of moisture content and density of the soil.

Abstract: This application provides a mobile terminal and relates to the field of display technologies. The mobile terminal includes a display panel, a cover body, a photoelectric conversion apparatus, and a bearer layer. The bearer layer includes a non-polarized part, where the bearer layer is disposed between the cover body and the display panel, and the bearer layer is located in a partial transmissive region of the display region, where an orthographic projection of the photoelectric conversion apparatus on the bearer layer is located in an orthographic projection of the non-polarized part on the bearer layer, and the non-polarized part is configured to enable a polarization direction of light. Furthermore, the mobile terminal includes an ink layer, disposed on a surface of the bearer layer, where the ink layer is located in a peripheral region of the mobile terminal. As discussed herein, the techniques resolve a problem of how to evenly print ink in a corresponding peripheral region of the mobile terminal.

Abstract: An in-situ evaluation method and system for loess collapsibility based on non-destructive time-domain reflection technology, includes: calculating loess dry density and mass water content; considering loess dry density, mass water content and basic physical property indicators, and evaluating loess collapsibility in situ through mathematical models. The loess collapsibility in-situ evaluation method based on the non-destructive time domain reflectometry technology of the present invention can not only realize whether the loess has collapsibility, but also has the potential to distinguish strong, medium and slight collapsibility.

Abstract: A fingerprint recognition system is disposed below a screen assembly of an electronic device and includes a light-emitting diode (LED), an image sensor, and a light shielding member. A light emitting surface of the LED faces the screen assembly and is configured to emit an optical signal. A photosensitive surface of the image sensor faces the screen assembly, where the optical signal received by the image sensor includes a fingerprint optical signal returned after being emitted by the LED to a finger, to generate a fingerprint image. The light shielding member is located between the LED and the image sensor, to block a part of signal light emitted by the LED.

Abstract: A vacuum chamber structure of an ultra-high gravity geotechnical centrifuge device, comprising: a cylindrical shell, a convex head, a bottom head, a lower bearing sealing cover, and a vacuum pressure-bearing chamber formed by sealing a top cylindrical cylinder and an upper sealing plate with sealing rings; wherein a high-speed rotor system is enclosed in the vacuum pressure-bearing chamber, and a cylindrical cooling device is installed between an internal side of the cylindrical shell and the high-speed rotor system. An annular cooling device is provided directly above the hanging baskets on both sides of the centrifuge arm. A vibration isolation expansion joint is arranged at the intersection of the high-speed rotor system and the cylindrical cylinder, which isolates the vibration of the main engine from the vacuum chamber and greatly reduces the vibration.

Abstract: A fingerprint recognition system is disposed below a screen assembly of an electronic device and includes a light-emitting diode (LED), an image sensor, and a light shielding member. A light emitting surface of the LED faces the screen assembly and is configured to emit an optical signal. A photosensitive surface of the image sensor faces the screen assembly, where the optical signal received by the image sensor includes a fingerprint optical signal returned after being emitted by the LED to a finger, to generate a fingerprint image. The light shielding member is located between the LED and the image sensor, to block a part of signal light emitted by the LED.

Abstract: This application provides a mobile terminal and relates to the field of display technologies. The mobile terminal includes a display panel, a cover body, a photoelectric conversion apparatus, and a bearer layer. The bearer layer includes a non-polarized part, where the bearer layer is disposed between the cover body and the display panel, and the bearer layer is located in a partial transmissive region of the display region, where an orthographic projection of the photoelectric conversion apparatus on the bearer layer is located in an orthographic projection of the non-polarized part on the bearer layer, and the non-polarized part is configured to enable a polarization direction of light. Furthermore, the mobile terminal includes an ink layer, disposed on a surface of the bearer layer, where the ink layer is located in a peripheral region of the mobile terminal. As discussed herein, the techniques resolve a problem of how to evenly print ink in a corresponding peripheral region of the mobile terminal.

Abstract: A screen assembly includes a display panel and a recognition panel located on a non-light-emitting side of the display panel. The display panel includes a plurality of recognition regions. A non-recognition region is formed between two adjacent and mutually spaced recognition regions. The recognition panel includes a plurality of image sensors. Photosensitive surfaces of the image sensors are configured to capture, in a one-to-one correspondence, user fingerprint images located in the recognition regions. A ratio of a total area of the recognition regions to a total area of non-recognition regions in a fingerprint coverage region is greater than or equal to 1:5.

Abstract: This application provides a protective film, and a method and an apparatus for cutting a protective film, so as to improve user experience. The protective film is applicable to an electronic device having a touchscreen. The touchscreen including a first polarizer having a polarization direction. The protective film is configured to pass light emitted by the touchscreen and light reflected by a finger of a user operating the electronic device through the touchscreen. And the protective film comprises a first axis and a second axis perpendicular to the first axis direction. The first axis and the polarization direction of the first polarizer form an angle selected from a group of zero degree, 45 degrees, and 90 degrees.

Abstract: Provided is a membrane for cell culture and differentiation. The membrane has a base portion and an array of protrusions consisting of a plurality of protrusions. The protrusions are substantially evenly distributed on the base portion. The plurality of protrusions has dimensions on the order of micrometers. In particular, the membrane consists of particles of different particle sizes of two or more kinds. One kind of particles have an average particle size of 1 ?m to 50 ?m. Two or more kinds of particles of different particle sizes include nanoscale particles, 10-900 nm. One kind of particles are selected from the group consisting of inorganic compound microspheres. The other kind of particles of the two or more kinds of particles of different particle sizes are selected from the group consisting of organic polymer nanospheres. Also provided is a method for maintaining, culturing and/or differentiating cells using such membrane.

Abstract: An LCD (Liquid Crystal Display) Device of improvement of flicker upon switching frame rate and method for the same are proposed. The LCD device includes a pixel matrix, a timing controller and a gate driver. The timing controller outputs a first Gate-On-Enable signal to the gate driver, when the LCD device displays frame according to a first frame rate. When the first frame rate is switched to a second frame rate, the timing controller outputs a second Gate-On-Enable signal to the gate driver to cause a charge time of the pixel matrix to be unchanged. It is appreciated that a pulse width of the second Gate-On-Enable signal is equal to a summation of a pulse width of the first Gate-On-Enable signal and an adjusted pulse width.

Abstract: A liquid crystal display (LCD) and a switching voltage controlling circuit thereof are provided. The LCD includes a display panel and a number of gate drivers. The switching voltage controlling circuit includes a current-controlled switch, a transmission line, and a feedback circuit. A first terminal and a second terminal of the current-controlled switch are respectively coupled to a constant voltage and a first terminal of the transmission line. The transmission line is serially coupled to the gate drivers. Each of the gate drivers generates a switching voltage according to a voltage provided by the transmission line and controls pixel units of the display panel. The feedback circuit regulates an amount of a current passing through the current-controlled switch according to a voltage difference between the first terminal and a second terminal of the transmission line. Thereby, color errors occurring between blocks of the display panel can be reduced.

Abstract: A LCD Device of improvement of flicker upon switching frame rate and method for the same are proposed. The LCD device includes a pixel matrix, a timing controller and a gate driver. The timing controller outputs a first Gate-On-Enable signal to the gate driver, when the LCD device displays frame according to a first frame rate. When the first frame rate is switched to a second frame rate, the timing controller outputs a second Gate-On-Enable signal to the gate driver to cause a charge time of the pixel matrix unchanged. It is appreciated that a pulse width of the second Gate-On-Enable signal is equal to a summation of a pulse width of the first Gate-On-Enable signal and an adjusted pulse width.

Abstract: A liquid crystal display (LCD) and a switching voltage controlling circuit thereof are provided. The LCD includes a display panel and a number of gate drivers. The switching voltage controlling circuit includes a current-controlled switch, a transmission line, and a feedback circuit. A first terminal and a second terminal of the current-controlled switch are respectively coupled to a constant voltage and a first terminal of the transmission line. The transmission line is serially coupled to the gate drivers. Each of the gate drivers generates a switching voltage according to a voltage provided by the transmission line and controls pixel units of the display panel. The feedback circuit regulates an amount of a current passing through the current-controlled switch according to a voltage difference between the first terminal and a second terminal of the transmission line. Thereby, color errors occurring between blocks of the display panel can be reduced.

Abstract: A DAC and a source driver using the same, and a driving method for a display device are provided. The DAC comprises a positive polarity resistor string and a negative polarity resistor string. The resistance of each resistor of the positive polarity resistor string is determined based on positive polarity driving voltages. The resistance of each resistor of the negative polarity resistor string is determined based on negative polarity driving voltages. So, the positive and negative polarity driving voltages, which are used for driving the display device, are in symmetric.

Abstract: A display panel driving device capable of reducing crosstalk and a driving method thereof is disclosed. The display panel driving device includes a plurality of source driving units, a NOT gate and a timing controller. The timing controller, through the NOT gate, provides an inversed-polarity control signal for the source driving units. The display panel driving method includes providing a polarity control signal produced by a timing controller for the remaining source driving units, then inverting the polarity and providing the other partial source driving units with the inversed-polarity control signal. The driving device and the driving method enable the polarities of the pixels on a same horizontal scanning line to be neutral to the greatest extent and avoid crosstalk caused by coupling effect between data lines and the common voltage Vcom. Consequently, the present invention significantly improves the display quality of a display panel by reducing crosstalk.

Abstract: An apparatus and method of driving a display panel are provided. The apparatus includes a comparison unit and a source driver. The comparison unit receives and stores a current line data, and compares the current line data with a previous stored line data. When a pixel data within the current line data and another pixel data within the previous line data at the same position are not identical, the comparison unit outputs the pixel data of the current line data, and the source driver latches the pixel data for driving the display panel, which is output from the comparison unit. When the pixel data within the current line data and another pixel data within the previous line data at the same position are not identical, the comparison unit does not output the pixel data, and the source driver drives the display panel in accordance with the previously latched pixel data.