Abstract: A temperature measuring method and apparatus based on creatine chemical exchange saturation transfer (CEST) imaging. The method comprises the following steps: (1) performing creatine CEST imaging on a creatine phantom, and analyzing a chemical shift of creatine relative to water in the creatine phantom; (2) fitting a mathematical relation between the chemical shift of the creatine relative to water and the temperature; and (3) performing CEST imaging on creatine in a sample, and calculating the temperature according to the mathematical relation, fitted in step (2), between the chemical shift of the creatine relative to water and the temperature. In the temperature measuring method, the creatine is taken as an endogenous reference, and highly-spatial-resolution, highly-sensitive, and non-invasive absolute temperature measurement can be implemented by means of temperature dependence of a CEST effect of Cr and water.

Abstract: A portable fan includes a shell, a mix-flow fan, arranged inside the shell and configured to rotate around a rotation shaft to generate wind, and a booster, arranged inside the shell. The booster surrounds a circumference of the mix-flow fan. A first air channel is defined between the mix-flow fan and the booster.

Abstract: The present disclosure provides an earphone comprising a sound production component and an ear hook. In a wearing state, the ear hook is configured to place the sound production component at a position near an ear canal but not blocking the ear canal. An inner contour of the ear hook's projection on a user's sagittal plane includes a first curve having an extremum point in a first direction. The first direction is perpendicular to a long-axis direction of a projection of the sound production component on the sagittal plane. The extremum point is located behind a projection point of an upper vertex of the ear hook on the sagittal plane, and the upper vertex is a highest point of an inner contour of the ear hook along the user's vertical axis. An inclination angle of the long-axis direction relative to a horizontal direction is within a range of 13°-21°.

Abstract: The present disclosure provides a headphone including a sound production component and an ear hook. The ear hook and the sound production component form a first projection on a user's sagittal plane. In a non-wearing state, an inner contour, a first end contour, a second end contour of the first projection, and a tangent segment connecting the first end contour and the second end contour jointly define a first closed curve. A first area of the first closed curve ranges 300 mm2-500 mm2. A portion of the inner contour corresponding to the ear hook includes a first curve. The first curve has an extremum point in a first direction perpendicular to a long axis direction of a projection of the sound production component, the extremum point is located behind a projection point of an upper vertex of the ear hook on the sagittal plane.

Abstract: A handheld fan includes an air supply portion and a handheld portion. The handheld portion includes a first outer shell and a battery module arranged in the first outer shell. The battery module includes a battery housing, and a first storage battery and a second storage battery which are arranged in the battery housing. The first storage battery and the second storage battery are connected in series through an electrical connector. The first storage battery and the second storage battery are arranged in a battery housing. The first storage battery and the second storage battery are connected in series or in parallel through an electric connector, which increases the battery capacity of the handheld fan, so that when a user uses the handheld fan, the battery life can be longer, bringing a better user experience.

Abstract: A sample mounting device for direct tensile test of rock mass is provided, which includes a first positioning stage, a second positioning stage, a first support piece, a second support piece, and a screw drive mechanism. The second positioning stage is arranged above the first positioning stage and capable of moving up and down, and cushion blocks for gluing with the rock mass are coaxially and detachably arranged at opposite ends of the first positioning stage and the second positioning stage, and a rock mass mounting area is formed between the two cushion blocks. A screw of the screw drive mechanism includes a first thread segment and a second thread segment with opposite thread directions. The first support piece is connected with the first thread segment through a nut seat, and the second support piece is connected with the second thread segment through a nut seat.

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.