Abstract: The disclosure relates to a method, apparatus, readable medium, and electronic device for live stream interaction. The method includes: in accordance with displaying of a first control at a first target position of a live stream interface, obtaining a first duration during which a user watches the live stream interface; in accordance with a determination that the first duration is greater than or equal to a first predetermined duration threshold, switching the first control to a second control, and displaying the second control at a second target position of the live stream interface; and in response to a first operation command performed by the user on the second control, allocating a virtual resource to the user. In this way, interaction modes of a live stream room are enriched, and an activity level of the live stream room can be improved.

Abstract: The present invention relates to the technical field of catalyst preparation, disclosing a preparation method and application of a coated vanadium-tungsten-titanium oxide monolithic SCR catalyst. The method includes the steps of mixing a vanadium oxide precursor, a tungsten oxide precursor, titanium dioxide, an inorganic adhesive, an organic adhesive and a macromolecular surfactant with deionized water and stirring them to obtain a thick liquid; adding a pH adjuster to the thick liquid to make its pH 1.5-4.5; impregnating a cordierite honeycomb carrier in the thick liquid to obtain a preliminarily-impregnated catalyst and dried and calcined the preliminarily-impregnated catalyst to obtain a finished catalyst. The method has advantages such as simple operation, easy repetition and short time-consuming, so it can be applied to exhaust gas post-treatment of a marine diesel engine, and provide a good choice for catalysts used to denitrify medium and high temperature exhausted gas from marine engines.

Abstract: Systems and methods for determining a target area relating to a subject situated on a table of a medical system are provided. The medical system may include a first device of a first modality and a second device of a second modality. In some embodiments, the system may: identify a second target area relating to the subject for performing a second operation using the second device; determine, based on the second target area, an initial target area relating to the subject for performing a first operation using the first device; and determine a first target area relating to the subject for performing the first operation using the first device by adjusting the initial target area.

Abstract: Disclosed is an auxiliary capturing device for remotely controlling a capturing action of a capturing device. The capturing device is provided with a plurality of function keys, the plurality of function keys includes a press function key, a rotation function key, and a toggle function key, the auxiliary capturing device includes: a device body configured to be detachably mounted on the capturing device; an electric drive mechanism provided on the device body, a plurality of drive portions being formed on the electric drive mechanism, the plurality of drive portions being connected to the press function key, the rotation function key, and the toggle function key, respectively, to drive the press function key, the rotation function key, and the toggle function key to perform corresponding capturing actions; and a control assembly electrically connected to the electric drive mechanism.

Abstract: Systems and methods for determining an ROI of a subject are provided. In some embodiments, the system may obtain a target image including the subject situated on a table. The system may also obtain a focus position associated with the ROI of the subject to be scanned or treated by a medical device in the target image. The system may further determine a target table position based on the focus position. In some embodiments, the system may obtain a model image corresponding to the subject. The system may also obtain a virtual area corresponding to a virtual ROI in the model image. The system may also obtain a positioning image of the subject. The system may further determine, in the positioning image, a target area corresponding to the ROI of the subject corresponding to the virtual ROI based on the virtual area and the positioning image.

Abstract: Disclosed is an auxiliary capturing device for remotely controlling a capturing action of a capturing device. The capturing device is provided with a plurality of function keys, the plurality of function keys includes a press function key, a rotation function key, and a toggle function key, the auxiliary capturing device includes: a device body configured to be detachably mounted on the capturing device; an electric drive mechanism provided on the device body, a plurality of drive portions being formed on the electric drive mechanism, the plurality of drive portions being connected to the press function key, the rotation function key, and the toggle function key, respectively, to drive the press function key, the rotation function key, and the toggle function key to perform corresponding capturing actions; and a control assembly electrically connected to the electric drive mechanism.

Abstract: Disclosed is an intelligent photography system including an intelligent tripod head, a search camera, a shooting camera, a communication component and a control component. The search camera is mounted on the intelligent tripod head, and configured to search for a target to be shot. The shooting camera is mounted on the intelligent tripod head, and configured to take a target image. The communication component is fixed on the intelligent tripod head. The control component includes a circuit board component electrically connected with the intelligent tripod head, the search camera, the shooting camera and the communication component respectively, so that remote control of the shooting camera for shooting is realized, photographers are freed, and better effects are achieved.

Abstract: Disclosed is an intelligent photography system including an intelligent tripod head, a search camera, a shooting camera, a communication component and a control component. The search camera is mounted on the intelligent tripod head, and configured to search for a target to be shot. The shooting camera is mounted on the intelligent tripod head, and configured to take a target image. The communication component is fixed on the intelligent tripod head. The control component includes a circuit board component electrically connected with the intelligent tripod head, the search camera, the shooting camera and the communication component respectively, so that remote control of the shooting camera for shooting is realized, photographers are freed, and better effects are achieved.

Abstract: Systems and methods for determining an ROI of a subject are provided. In some embodiments, the system may obtain a target image including the subject situated on a table. The system may also obtain a focus position associated with the ROI of the subject to be scanned or treated by a medical device in the target image. The system may further determine a target table position based on the focus position. In some embodiments, the system may obtain a model image corresponding to the subject. The system may also obtain a virtual area corresponding to a virtual ROI in the model image. The system may also obtain a positioning image of the subject. The system may further determine, in the positioning image, a target area corresponding to the ROI of the subject corresponding to the virtual ROI based on the virtual area and the positioning image.

Abstract: Disclosed herein are methods and devices for stimulating an immune response to a disease in a subject, which involves passing sub-microsecond long pulses of electric fields having an amplitude between 5 kV/cm and 68 kV/cm through an abnormal growth of a subject sufficient to suppress myeloid-derived suppressor cell (MDSC) or regulatory T cell (Treg) production, increase adenosine triphosphate (ATP) or high mobility group box 1 (HMGB1) production, or stimulate dendritic cell activation in the subject.