Abstract: A method for reducing peak tailing and reactions when using a carrier gas other than helium for gas chromatography-mass spectrometry (GC-MS) includes separating compounds using a gas chromatography column using a carrier gas other than helium; providing the column output to an ionization chamber of a mass spectrometer; providing a scavenger gas to the ionization chamber of the mass spectrometer; ionizing the compounds in the presence of the carrier gas and the scavenger gas; analyzing the ionized compounds using the mass spectrometer.

Abstract: A preparation method of an antifouling and hydrophilic polyethersulfone ultrafiltration membrane includes through the 60Co-? radiation grafting chemical modification method, evenly distributing an ionic liquid on a surface of a polyethersulfone material, wherein the ionic liquid containing unsaturated bonds is connected with the polyethersulfone material through chemical bonds, and then obtaining an asymmetric porous membrane by the immersion-precipitation phase transformation method, and finally performing Soxhlet extraction on the porous membrane, so as to migrate the grafted ionic liquid from an interior of the porous membrane to a surface of the porous membrane to be enriched, so that the adsorption and antibacterial properties of the porous membrane are improved. A mass ratio of the ionic liquid to the polyethersulfone material is in a range of (2-11):100.

Abstract: A multidimensional knowledge transfer model for predicting CTR of a computational ad, the multidimensional knowledge transfer model comprises: a pre-processor for building an ad group node graph based on similarities among ad group nodes, an ad campaign node graph from merging the ad group node graph, and an ad account node graph from merging the ad campaign node graph. The multidimensional knowledge transfer model further comprises a multi-knowledge CTR prediction model for each of the ad account, ad campaign, and ad group layers. The multi-knowledge CTR prediction model predicts the respective node's CTR from the ad account node graph, ad campaign node graph, or ad group node graph, features of the audience group, and features of the node having its CTR predicted appended with the hidden vector of its parent node extracted from the upper layer multi-knowledge CTR prediction model.

Abstract: According to the embodiments of the disclosure, a multimedia processing method, device, electronic device, and storage medium are provided by obtaining a first multimedia resource; determining an initial text content corresponding to the first multimedia resource by performing speech recognition on audio data of the first multimedia resource, the audio data of the first multimedia resource comprises speech data of the initial text content; determining an invalid text content in the initial text content, the invalid text content is semantically non-informative; determining a first playing position of speech data of the invalid text content in the first multimedia resource; and cropping the first multimedia resource based on the first playing position to obtain a second multimedia resource, wherein audio data of the second multimedia resource comprises speech data of a target text content but does not comprise the speech data of the invalid text content.

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: The present disclosure relates to a subtitle generation method, a subtitle generation apparatus, an electronic device, a storage medium and a program.

Abstract: The present disclosure is directed to a class of Sigma-1 receptor small molecule antagonists, their pharmaceutical compositions, preparation methods, and uses. The Sigma-1 receptor small molecule antagonists are shown in formula (I), with specific substituents and definitions described in the specification. These Sigma-1 receptor small molecule antagonists exhibit good binding and antagonistic activity with the Sigma-1 receptor. The invention includes these compounds or their pharmaceutical compositions and their use in treating and/or preventing pain disorders related to the Sigma-1 receptor.

Abstract: Embodiments of the present invention relate to an obstacle detection method and apparatus and an unmanned aerial vehicle. The unmanned aerial vehicle includes a binocular photographing component and a laser texture component. The method includes: determining to start the laser texture component; starting the laser texture component, to emit a laser texture; obtaining a binocular view that is collected by the binocular photographing component and that includes the laser texture, and setting the binocular view that includes the laser texture as a target binocular view; and performing obstacle detection based on the target binocular view. In the above technical solutions, according to the embodiments of the present invention, precision of binocular stereo matching can be improved without changing an original binocular matching algorithm and structure, thereby improving precision of obstacle detection. In addition, the unmanned aerial vehicle can perform binocular sensing while flying at night.

Abstract: The autonomous landing method of a UAV includes: obtaining a point cloud distribution map of a planned landing region; determining a detection region in the point cloud distribution map according to an actual landing region of the UAV in the point cloud distribution map; dividing the detection region into at least two designated regions, each of the at least two designated regions corresponding to a part of the planned landing region; determining whether a quantity of point clouds in each of the at least two designated regions is less than a preset threshold; and if a quantity of point clouds in a designated region is less than the preset threshold, controlling the UAV to fly away from the designated region of which the quantity of point clouds is less than the preset threshold, or controlling the UAV to stop landing.

Abstract: Systems and methods described herein may utilize a non-linear scaling relationship to scale brightness of selective portions of the display in a manner that reduces or eliminates perceivable banding effects. By non-linearly controlling changes in brightness of the display, a viewer may perceive a more uniform, linear dimming towards the relatively dimmer region without perceiving banding, leading to improved user experience when viewing the electronic display.

Abstract: Embodiments of the present invention relate to an obstacle detection method and apparatus and an unmanned aerial vehicle. The unmanned aerial vehicle includes a binocular photographing component and a laser texture component. The method includes: determining to start the laser texture component; starting the laser texture component, to emit a laser texture; obtaining a binocular view that is collected by the binocular photographing component and that includes the laser texture, and setting the binocular view that includes the laser texture as a target binocular view; and performing obstacle detection based on the target binocular view. In the above technical solutions, according to the embodiments of the present invention, precision of binocular stereo matching can be improved without changing an original binocular matching algorithm and structure, thereby improving precision of obstacle detection. In addition, the unmanned aerial vehicle can perform binocular sensing while flying at night.

Abstract: Disclosed herein are scientific instrument support systems, related methods, computing devices, and computer-readable media. For example, in some embodiments, a scientific instrument support apparatus includes sample analysis logic to cause a sample to be injected into a gas chromatograph and to obtain a mass spectrum of the sample using a mass spectrometer coupled to the output of the gas chromatograph, the mass spectrometer utilizing a mass calibration or a lock mass correction while obtaining the mass spectrum of the sample; calibration gas logic to control a supply of a calibration gas to the mass spectrometer during the void time of the gas chromatograph; and lock mass calibration logic to obtain a mass spectrum of the calibration gas using the mass spectrometer during the void time of the gas chromatograph and to calculate the mass calibration or the lock mass correction to be used by the sample analysis logic.

Abstract: The present invention relates to a target positioning method and device, and an unmanned aerial vehicle. The method includes: acquiring a target image through an image acquisition device; acquiring the position information of a target in the target image according to the target image; acquiring original point clouds of an environment in front of the unmanned aerial vehicle through a depth sensor; acquiring the point clouds corresponding to the target in the original point clouds according to the original point clouds and the position information of the target in the target image; and acquiring the position information of the target in a three-dimensional space according to the point clouds corresponding to the target.

Abstract: The invention discloses a nitrogen-containing heterocyclic derivative of a somatostatin receptor subtype 4 (SSTR4) small molecule agonist and its pharmaceutical composition, preparation method, and use. The nitrogen-containing heterocyclic derivative of the SSTR4 small molecule agonist is represented by formula (I), and the specific substituents and definitions are as described in the specification. The nitrogen-containing heterocyclic derivatives of SSTR4 small molecule agonists exhibit good binding and agonistic activities with SSTR4. Such compounds or their pharmaceutical compositions have great potential in treating and/or preventing pain disorders related to SSTR4 receptor.

Abstract: A binocular vision-based environment sensing method and apparatus, is applied to an unmanned aerial vehicle. The unmanned aerial vehicle is provided with five binocular cameras. The first binocular camera is disposed at the front portion of the fuselage of the unmanned aerial vehicle. The second binocular camera is inclined upward and disposed between the left side of the fuselage and the upper portion of the fuselage of the unmanned aerial vehicle. The third binocular camera is inclined upward and disposed between the right side of the fuselage and the upper portion of the fuselage of the unmanned aerial vehicle. The fourth binocular camera is disposed at the lower portion of the fuselage of the unmanned aerial vehicle. The fifth binocular camera disposed at the rear portion of the fuselage of the unmanned aerial vehicle. The method can simplify an omni-directional sensing system while reducing the sensing blind area.

Abstract: Disclosed herein are scientific instrument support systems, as well as related methods, computing devices, and computer-readable media. For example, in some embodiments, a scientific instrument support apparatus, includes timing logic to determine a maximum time without wetting for a syringe; and rinsing logic to control an autosampler to rinse the syringe when the maximum time without wetting is reached.

Abstract: Provided are an audio/video processing method and apparatus, a device, and a storage medium. The method comprises: displaying text data corresponding to an audio/video to be edited, wherein the text data has a mapping relation with an audio/video timestamp of said audio/video; displaying said audio/video according to a time axis track; in response to a preset operation triggered for target text data in the text data, determining an audio/video timestamp corresponding to the target text data as a target audio/video timestamp; and processing, on the basis of the preset operation, an audio/video clip corresponding to the target audio/video timestamp in said audio/video.

Abstract: According to the embodiments of the disclosure, a multimedia processing method, device, electronic device, and storage medium are provided by obtaining a first multimedia resource; determining an initial text content corresponding to the first multimedia resource by performing speech recognition on audio data of the first multimedia resource, the audio data of the first multimedia resource comprises speech data of the initial text content; determining an invalid text content in the initial text content, the invalid text content is semantically non-informative; determining a first playing position of speech data of the invalid text content in the first multimedia resource; and cropping the first multimedia resource based on the first playing position to obtain a second multimedia resource, wherein audio data of the second multimedia resource comprises speech data of a target text content but does not comprise the speech data of the invalid text content.

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: An electronic device plays, by using a first application, audio corresponding to a first media file, and displays a video recording interface of a second application; in response to an operation on a background music setting option, the electronic device sets background music as audio corresponding to a second audio file; in response to a first operation on a virtual button, the electronic device starts video recording, and processes the second audio file to obtain audio data of the second audio file; and in response to a second operation on the virtual button, the electronic device ends video recording, and generates a video file, where the video file includes the audio data of the second audio file and image data of an image captured by a camera, but does not include audio data of the first media file.