Abstract: The present invention disclosures a novel purine derivatives represented by formula (I) or a pharmaceutically acceptable salt thereof, intermediate and application thereof inpreparation of a medicament for treating or preventing a cancer. This compound is a novel PI3K inhibitor with an excellent inhibitory activity; and may be useful for treating a variety of malignant tumors.

Abstract: A camera module includes a circuit board; and a lens module electrically connected with the circuit board. The lens module is configured to be capable of deformed when being applied a voltage thereon so as to change a focus length of the lens module.

Abstract: A system for increased safety levels at swimming venues includes an UWB tag, a control terminal, and at least three base stations. The UWB tag transmits positioning data of the tag worn by a swimmer and transmits a signal to the at least three base stations. The base stations receive the signal and the positioning data, record time when receiving same, and send the signal, the positioning data, and the time to the control terminal. The control terminal calculates position of the swimmer's UWB tag according to the positioning data and the time when a period of attenuation or disappearance of the wireless connection signal from the immersed UWB tag exceeds a first preset time, generates alarm information, and sends the position of the UWB tag and the alarm information to notify a security officer.

Abstract: The present invention discloses an atrial fibrillation detection device, method, system and storage medium. The device includes an ECG signal processing module, configured to identify positions of Q, R, S and T points of all heartbeats in an ECG signal acquired in a preset time, and determine a RR interval, a P point amplitude, an R point amplitude and a TQ segment waveform of each heartbeat according to the positions of the P, Q, R, S and T positions; and a detection module, configured to acquire an integrated score and perform conditional judgment on the integrated score, wherein the fifth score is a quotient of a total number of f waves in all the TQ segment waveforms in the ECG signal to a total number of the TQ segment waveforms involved in the ECG signal.

Abstract: Provided is a compound represented by structural formula (I), or a pharmaceutically acceptable salt, or a stereoisomer thereof useful for treating cancer.

Abstract: A lens module of reduced size includes a circuit board, a mounting base, and electronic components. The mounting base is disposed on the circuit board, and includes a base plate and a first flange surrounding edges of the base plate. A portion of the bottom surface of the base plate includes a first area, a second area, a third area, and a fourth area. The first flange includes a first flange portion disposed on the first area and a second flange portion disposed on the second area. The electronic components are disposed on the circuit board, and disposed under at least one of the third area and the fourth area.

Abstract: A memory evaluation method includes determining a health degree evaluation model indicating a relationship in which a health degree of a memory changes with at least one health degree influencing factor of the memory; obtaining at least one running parameter value corresponding to each of the at least one health degree influencing factor; separately matching the at least one running parameter value corresponding to each health degree influencing factor to the health degree evaluation model, to obtain the health degree of the memory; and outputting health degree indication information indicating whether the memory needs to be replaced.

Abstract: A method for rapidly and quantitatively adjusting a beam angle of an illuminating device includes: determining a target beam angle according to an actual scene, and sending, by using an input apparatus, the target beam angle to the illuminating device; receiving, by a receiver of the illuminating device, the target beam angle and sending the target beam angle to a controller of the illuminating device; determining, by the controller of the illuminating device, target power of each light source according to the target beam angle and a parameter table stored in a local read-only memory (ROM) or cloud of the illuminating device; and driving, by a driver, each light source to emit light according to the corresponding target power, enabling radiated light to be mixed in an illuminated space to change the beam angle, and obtaining the target beam angle according to a superposition principle for the intensity of light.

Abstract: A lens module includes a printed circuit board, a lens component, and at least two electric conductors. The lens component includes a first lens and a microscope base, the first lens is formed on the microscope base, the microscope base is formed on the printed circuit board, and the first lens is electrically conductive and deforms under voltage. The first lens is electrically connected to the printed circuit board by the electric conductors. The printed circuit board outputs a voltage to the first lens through the electric conductors; the first lens deforms according to the voltage thereby changing a focal distance of light passing through the first lens. The disclosure also relates to an electronic device using the lens module. The lens module can has a zoom function and has a litter volume.

Abstract: A rotatable optical module able to aim structured light in different directions includes a driver and an optical assembly positioned at a side of the driver and connected to the driver. The optical assembly projects structured light. The driver drives the optical assembly to rotate, thereby changing the aiming direction of the structured light. An electronic device using such module and placed directly between two target objects is able to function as a meter of the distance between the objects in addition to mapping the contours of each.

Abstract: The present disclosure provides an electrical connector and an electrical connector assembly, the electrical connector includes a conductive seat, a movable contact pin and a spring member. The conductive seat includes a first receiving section, a second receiving section, at least one connection arm connected between the first receiving section and the second receiving section, and two elastic contact arms bending from one of the first receiving section and the second receiving section toward the other of the first receiving section and the second receiving section and extending; a through hole is provided to a front end of the first receiving section.

Abstract: A lens protection structure includes a base, a polyester film, a first silica gel, a second silica gel, and a protective cover. Each of the base, the polyester film, the first silica gel, and the second silica gel defines a through hole for cooperatively receiving a lens. The polyester film is coupled to a surface of the base, and the first silica gel is coupled to a surface of the base opposite the polyester film. The second silica gel is coupled to the polyester film. The protective cover is coupled to the second silica gel and seals a receiving cavity within the base. At least one air escape channel is defined in the base. The at least one air escape channel communicates the receiving cavity of the base to an exterior of the lens protection structure.

Abstract: A positive electrode material, an electrochemical device that uses same, and an electronic device. Specifically, a positive is a layered structure. The layered structure includes a strip-like structure containing an atom cluster. The positive electrode material according to this application helps to improve cycle performance and storage performance of the electrochemical device under a high voltage working condition.

Abstract: A camera module shielded against electromagnetic interference but of reduced size comprises a voice coil motor, a circuit board, and a base between voice coil motor and circuit board. The voice coil motor comprises conductive housing. The circuit board comprises a conductive wire itself comprising shielded wire, ground pad, and a surrounding and grounded closed ground loop. The base comprises a main body and a conductive loop sleeved thereon. A first side of the conductive loop is electrically connected to the conductive housing, a second side of the conductive loop is electrically connected to the closed ground loop. The conductive housing, the conductive loop, and the closed ground loop form a shield against electromagnetic interference. The disclosure further provides an electronic device including the camera module.

Abstract: A pyranoglucose-substituted pyrazole compound, used as a pharmaceutical intermediate, having the structural formula represented by formula (9c). The present invention further relates to an intermediate compound represented by formula (10c) or a salt thereof. The present invention further relates to a preparation method of the aforementioned intermediate compound and a method of using the same to prepare an SGLT inhibitor. By means of the novel key intermediate, the preparation technique of an SGLT inhibitor is greatly simplified. In addition, because the intermediate can be precipitated in the form of a salt and is easy to purify, the purity of the SGLT inhibitor is significantly increased, compared with the original preparation pathway (crude product purity can reach 99% or more).

Abstract: A camera module includes a printed circuit board, a sensor, and a refrigeration chip. A first receiving groove is defined in the printed circuit board. The sensor is received in the first receiving groove and electrically connected to the printed circuit board. The refrigeration chip is formed on and electrically connected to the printed circuit board. The refrigeration chip comprises a cold surface. The sensor is formed on the cold surface. The cold surface is configured to absorb heat from the sensor when the refrigeration chip is powered on. The camera module is capable of dissipating heat and controlling an internal temperature of the camera module.

Abstract: A method for calculating a current illumination level of a target scene capable of quantitatively evaluating an illumination level in a scene through a camera, and a method for automatically adjusting an illumination level of the target scene capable of automatically performing a constant light control over a scene, and a camera, capable of quantitatively evaluating the illumination level in the scene and a smart illumination control system are provided. The smart illumination control system is capable of quantitatively evaluating the illumination level in the scene and automatically adjusting an illumination brightness, a color temperature, a color or a contrast in the scene to realize a constant control over a light environment. In addition, by setting the illumination level on a setting terminal, an illumination product also performs a light-supplementing automatically for the camera to realize a constant light control over a shooting.

Abstract: Described herein are immuno-stimulatory RNA nanostructures (which comprises a single-stranded RNA (ssRNA) molecule, wherein the ssRNA molecule forms at least one paranemic cohesion crossover), as well as compositions and methods of use thereof.

Abstract: A memory evaluation method and apparatus are provided. The method includes: determining a health degree evaluation model indicating a relationship in which a health degree of a memory changes with at least one health degree influencing factor of the memory; obtaining at least one running parameter value corresponding to each of the at least one health degree influencing factor; separately matching the at least one running parameter value corresponding to each health degree influencing factor to the health degree evaluation model, to obtain the health degree of the memory; and outputting health degree indication information which indicate whether the memory needs to be replaced. Therefore, the memory is not faulty and the health degree of the memory is a relatively low, a user is prompted to replace the memory.

Abstract: A lens module includes a printed circuit board, a lens component, and at least two electric conductors. The lens component includes a first lens and a microscope base, the first lens is formed on the microscope base, the microscope base is formed on the printed circuit board, and the first lens is electrically conductive and deforms under voltage. The first lens is electrically connected to the printed circuit board by the electric conductors. The printed circuit board outputs a voltage to the first lens through the electric conductors; the first lens deforms according to the voltage thereby changing a focal distance of light passing through the first lens. The disclosure also relates to an electronic device using the lens module. The lens module can has a zoom function and has a litter volume.