Abstract: In an example, a computing device includes a microphone array and a processor. The processor may transmit an audio stream of a presentation to an online conference. Further, the processor may receive audio data via the microphone array while the audio stream is being transmitted. In response to determining the audio data is coming from a presenter of the presentation, the processor may perform a fade audio operation to control an audio level of the audio stream.

Abstract: In an example, a computing device includes a microphone array and a processor. The processor may transmit an audio stream of a presentation to an online conference. Further, the processor may receive audio data via the microphone array while the audio stream is being transmitted. In response to determining the audio data is coming from a presenter of the presentation, the processor may perform a fade audio operation to control an audio level of the audio stream.

Abstract: An energy storage MMC topology is proposed to avoid the microcirculation of battery. The topology consists of six bridge arms in three stages and can be connected to DC system and AC system. Each bridge arm is composed of one bridge arm inductance and N energy storage sub-modules with the same structure in series. The energy storage sub-modules include a half-bridge power module, a battery energy storage module and a group of anti-parallel thyristors. The group of anti-parallel thyristors is connected in series over the DC cable between the battery energy storage module and a capacitor of the half-bridge power module. The switching control is performed on the battery in the energy storage MMC according to the systematic operating mode.

Abstract: An energy storage MMC topology is proposed to avoid the microcirculation of battery. The topology consists of six bridge arms in three stages and can be connected to DC system and AC system. Each bridge arm is composed of one bridge arm inductance and N energy storage sub-modules with the same structure in series. The energy storage sub-modules include a half-bridge power module, a battery energy storage module and a group of anti-parallel thyristors. The group of anti-parallel thyristors is connected in series over the DC cable between the battery energy storage module and a capacitor of the half-bridge power module. The switching control is performed on the battery in the energy storage MMC according to the systematic operating mode.

Abstract: A solid pharmaceutical composition comprising a quinazoline derivative or a medicinal salt thereof, and a preparation method therefor. Specifically, provided is a solid pharmaceutical composition comprising N6-(1-acryloylpiperidin-4-yl)-N4-(3-chloro-4-fluorophenyl)-7-methoxyquinazoline-4,6-diamine or a medicinal salt thereof, and a preparation method therefor and use thereof.

Abstract: Various embodiments of the teachings herein include a signal cable connection device comprising: a cable with a sleeve and multiple loose wires extending out from an extremity of the sleeve; a conductive metal ring crimped at the extremity so the ring and the sleeve are fixed to each other, one end of the conductive metal ring having an outward-turned flange, and a shielding wire connected to the conductive metal ring; and a housing with a cable channel defining an outer opening located at an outer side of the housing and an inner opening located at an inner side of the housing, and a threaded hole at an edge of the inner opening. When a screw is screwed into the threaded hole, the outward-turned flange of the conductive metal ring is clamped between a head of the screw and a sidewall of the inner opening.

Abstract: Disclosed is a trifluoromethyl-substituted sulfonamide BCL-2-selective inhibitor, in particular disclosed are a compound of formula I, a stereoisomer or a pharmaceutically acceptable salt thereof, a preparation method therefor, and a pharmaceutical composition thereof. Also disclosed are the uses of said compound and of a pharmaceutical composition comprising same for treating anti-apoptotic BCL-2-related diseases, such as cancer.

Abstract: A method and an apparatus for determining an interaction position. The method is applied to a projection interactive system. In the display direction of the projection plane, the light plane is formed above the projection plane via the predetermined light signal emitted by the light emitter, and the image pickup device can collect the predetermined light signal from the work region of the light plane. The predetermined light signal is monitored when the predetermined light signal collected by the image pickup device is obtained. As long as a person interacts with the projected image, the light plane for identifying the interaction position is inevitably penetrated, leading to the change of the predetermined light. The projection interactive system can recognize the signal change generated by the interacting action, and determine the interaction position of the interacting action according to the signal change.

Abstract: A method and an apparatus for determining an interaction position. The method is applied to a projection interactive system. In the display direction of the projection plane, the light plane is formed above the projection plane via the predetermined light signal emitted by the light emitter, and the image pickup device can collect the predetermined light signal from the work region of the light plane. The predetermined light signal is monitored when the predetermined light signal collected by the image pickup device is obtained. As long as a person interacts with the projected image, the light plane for identifying the interaction position is inevitably penetrated, leading to the change of the predetermined light. The projection interactive system can recognize the signal change generated by the interacting action, and determine the interaction position of the interacting action according to the signal change.

Abstract: Provided is an active power filter-based modular multilevel converter, relating to the field of power electronics. According to the converter, an active power filter circuit is provided between upper and lower arms of each phase in a modular multilevel converter. The active power filter circuit includes two switch power devices, two submodules, a capacitor, and an inductor. The upper and lower bridge-arms are connected in series by means of two submodules, the two switch power devices are connected in series and then connected in parallel to ends of intermediate submodules which are connected in series, and the capacitor and the inductor are connected in series and then connected in parallel to two ends of the switch power device connected to the lower bridge-arm. The defect of large capacitance of submodule in conventional modular multilevel topology is overcome.

Abstract: The present invention discloses a method for co-production and processing of biological energy sources by oil crops, and belongs to the technical fields of oleochemical industry and biomass chemical industry. The method comprises the following steps: husking and drying oil crop seeds to obtain husks of which the moisture content is 5%-12% and oil seeds of which the moisture content is 30%-55%; squeezing and extracting the obtained oil seeds to obtain vegetable oil and oil seed meal; performing esterification reaction on the vegetable oil and alcohol to be separated to obtain bio-diesel and crude glycerol; performing cooking treatment on the husks and/or the oil seed meal in the crude glycerol to be separated to obtain oil crude cellulose and glycerol treating liquid; performing microbial fermentation or anaerobic digestion on the oil crude cellulose and the glycerol treating liquid respectively to obtain biological energy sources or bio-based chemicals.

Abstract: Disclosed are a crystal of a maleate of a compound of formula (I), a preparation method for the crystal, a crystallization composition of same, a pharmaceutical composition of same, and uses thereof in preventing and treating a tumor.

Abstract: The present application belongs to the field of medicinal chemistry, and relates to crystals of an aniline pyrimidine compound serving as an EGFR inhibitor. Specifically, the present application relates to crystal A, crystal B and crystal C of N-(2-((2-(dimethyl amino)ethyl)(methyl)amino)-4-methoxy-5-(4-(3-methyl-2-oxo-2,3-dihydro-1H-benzo[d]imidazole-1-base)pyrimidine-2-base amino)phenyl)acrylamide (formula I) hydrochloride, and also relates to the method for preparing the crystal A, the crystal B and the crystal C, a crystal composition comprising the crystal A, the crystal B, and the crystal C, a pharmaceutical composition comprising the crystal A, the crystal B and the crystal C or the crystal composition thereof, and medical uses thereof. The crystal A, the crystal B and the crystal C in the present application has the advantages of high purity, high crystallization degree, good stability and the like.

Abstract: Provided is an active power filter-based modular multilevel converter, relating to the field of power electronics. According to the converter, an active power filter circuit is provided between upper and lower arms of each phase in a modular multilevel converter. The active power filter circuit includes two switch power devices, two submodules, a capacitor, and an inductor. The upper and lower bridge-arms are connected in series by means of two submodules, the two switch power devices are connected in series and then connected in parallel to ends of intermediate submodules which are connected in series, and the capacitor and the inductor are connected in series and then connected in parallel to two ends of the switch power device connected to the lower bridge-arm. The defect of large capacitance of submodule in conventional modular multilevel topology is overcome.

Abstract: An infinitely extendable solar cell module based on a circuit extendable through magnetic engagement is provided. The solar cell module comprises a circuit, a battery piece, a transparent layer, and a magnetic engagement element. The battery piece is connected with the magnetic engagement element by the circuit, the battery module is adapted to be connected to another battery module by the magnetic engagement element, and the transparent layer is on the surface of the battery module.

Abstract: The present application belongs to the field of medicinal chemistry, and relates to crystals of an aniline pyrimidine compound serving as an EGFR inhibitor. Specifically, the present application relates to crystal A, crystal B and crystal C of N-(2-((2-(dimethyl amino)ethyl)(methyl)amino)-4-methoxy-5-(4-(3-methyl-2-oxo-2,3-dihydro-1H-benzo[d]imidazole-1-base)pyrimidine-2-base amino)phenyl)acrylamide (formula I) hydrochloride, and also relates to the method for preparing the crystal A, the crystal B and the crystal C, a crystal composition comprising the crystal A, the crystal B, and the crystal C, a pharmaceutical composition comprising the crystal A, the crystal B and the crystal C or the crystal composition thereof, and medical uses thereof. The crystal A, the crystal B and the crystal C in the present application has the advantages of high purity, high crystallization degree, good stability and the like.

Abstract: The present invention discloses a method for co-production and processing of biological energy sources by oil crops, and belongs to the technical fields of oleochemical industry and biomass chemical industry. The method comprises the following steps: husking and drying oil crop seeds to obtain husks of which the moisture content is 5%-12% and oil seeds of which the moisture content is 30%-55%; squeezing and extracting the obtained oil seeds to obtain vegetable oil and oil seed meal; performing esterification reaction on the vegetable oil and alcohol to be separated to obtain bio-diesel and crude glycerol; performing cooking treatment on the husks and/or the oil seed meal in the crude glycerol to be separated to obtain oil crude cellulose and glycerol treating liquid; performing microbial fermentation or anaerobic digestion on the oil crude cellulose and the glycerol treating liquid respectively to obtain biological energy sources or bio-based chemicals.

Abstract: Disclosed are a crystal of a maleate of a compound of formula (I), a preparation method for the crystal, a crystallization composition of same, a pharmaceutical composition of same, and uses thereof in preventing and treating a tumor.

Abstract: An infinitely extendable solar cell module based on a circuit extendable through magnetic engagement is provided. The solar cell module comprises a circuit, a battery piece, a transparent layer, and a magnetic engagement element. The battery piece is connected with the magnetic engagement element by the circuit, the battery module is adapted to be connected to another battery module by the magnetic engagement element, and the transparent layer is on the surface of the battery module.