Abstract: Provided is a gene target region enrichment method and a kit. The method comprises (1) amplifying fragmented DNA comprising a target region by means of a specific probe so as to obtain a captured-extension product, wherein the specific probe comprises a sequence complementary to the target region of the fragmented DNA, and the 3? terminal nucleotide of the specific probe is modified to prevent a ligation reaction at the 3? terminal of the specific probe; and (2) linking the 3? terminal of the captured-extension product obtained in step (1) to linker DNA to obtain a ligation product.

Abstract: This application provides an interface calling simulation method for developing an application program performed by an electronic device. The electronic device receives an interface calling request for a target interface in an application program. The interface calling request includes interface calling information of the target interface. The electronic device identifies, within a simulated interface set for a simulation interface corresponding to the target interface. The simulated interface set includes simulated interfaces that simulate real interfaces in the application program. The electronic device compares the interface calling information of the target interface with interface configuration information of the simulated interface.

Abstract: The present invention provides a multi-load wireless power transfer system based on high-order Anti-PT symmetry. By introducing a “W-shaped” anti-resonance mode into a basic WPT platform, an effective Anti-PT non-Hermitian system is conveniently constructed. The “level attraction” of the anti-resonance mode is combined with the “level splitting” of the anti-resonance mode and the resonance mode, to study the “level pinning” effect of high-order Anti-PT symmetry. Compared with the traditional resonant WPT, the anti-resonant WPT has higher security, stability, transfer efficiency, and flexibility. Considering the miniaturization and integration of devices, a “meta coil” is designed by using a “synthetic dimension”, and used to construct a high-order Anti-PT symmetric system, thereby achieving multi-load efficient WPT. The new WPT technology based on the “level pinning” effect of high-order Anti-PT symmetry provides a good application research platform for enriching non-Hermitian physics.

Abstract: Provided is a gene target region enrichment method and a kit. The method comprises (1) amplifying fragmented DNA comprising a target region by means of a specific probe so as to obtain a captured-extension product, wherein the specific probe comprises a sequence complementary to the target region of the fragmented DNA, and the 3? terminal nucleotide of the specific probe is modified to prevent a ligation reaction at the 3? terminal of the specific probe; and (2) linking the 3? terminal of the captured-extension product obtained in step (1) to linker DNA to obtain a ligation product.

Abstract: Embodiments of this application provide a user hearing protection method, apparatus, and electronic device. In the method, after an electronic device enables a hearing protection mode, when an audio output mode is a headset output, sound pressure output by the headset is obtained based on current-frame sound source data; when the sound pressure is greater than a predetermined sound pressure threshold, an instantaneous sound pressure over-standard warning is performed, and an instantaneous sound pressure over-standard protection operation is performed on the electronic device. In addition, after the output sound pressure is obtained, the sound pressure may be stored, and a sound dose accumulated to a current moment may be determined based on the stored historical sound pressure data; when the sound dose is greater than a predetermined sound dose standard value, sound dose over-standard warning and a sound dose over-standard protection operation are performed.

Abstract: The present invention relates to a high-order parity-time (PT) symmetry wireless power transfer (WPT) system and method. The method includes the following steps: providing an N-order composite coil which includes N resonance circuits, where N is an odd number; providing an M-order composite coil which includes M resonance circuits, where M is an even number; connecting a scattering capacitor to end portions of two adjacent resonance circuits; coupling the first resonance circuits in the two composite coils to realize WPT; connecting a load to an alternating current power supply; and adjusting a capacitor in the resonance circuit symmetrical to the two first resonance circuits according to a change in coupling strength caused by a change in coupling distance in a WPT process to obtain an optimal transfer efficiency.

Abstract: The present invention provides a multi-load wireless power transfer system based on high-order Anti-PT symmetry. By introducing a “W-shaped” anti-resonance mode into a basic WPT platform, an effective Anti-PT non-Hermitian system is conveniently constructed. The “level attraction” of the anti-resonance mode is combined with the “level splitting” of the anti-resonance mode and the resonance mode, to study the “level pinning” effect of high-order Anti-PT symmetry. Compared with the traditional resonant WPT, the anti-resonant WPT has higher security, stability, transfer efficiency, and flexibility. Considering the miniaturization and integration of devices, a “meta coil” is designed by using a “synthetic dimension”, and used to construct a high-order Anti-PT symmetric system, thereby achieving multi-load efficient WPT. The new WPT technology based on the “level pinning” effect of high-order Anti-PT symmetry provides a good application research platform for enriching non-Hermitian physics.

Abstract: This application provides an interface calling simulation method for developing an application program performed by an electronic device. The electronic device receives an interface calling request for a target interface in an application program. The interface calling request includes interface calling information of the target interface. The electronic device identifies, within a simulated interface set for a simulation interface corresponding to the target interface. The simulated interface set includes simulated interfaces that simulate real interfaces in the application program. The electronic device compares the interface calling information of the target interface with interface configuration information of the simulated interface.

Abstract: An electronic device receives an interface calling request for a target interface in an application program. The interface calling request includes interface calling information of the target interface. The device performs an interface query in a simulated interface set that simulates real interfaces in the application program. In accordance with a determination, based on the interface query, that a target simulation interface corresponding to the target interface exists in the simulated interface set, the device intercepts the interface calling request. The device compares the intercepted interface calling information with interface configuration information of the target simulated interface. In accordance with a determination that the interface calling information matches the interface configuration information, the device obtains simulated response data corresponding to the target simulation interface. The device outputs calling response data of the interface calling request.

Abstract: Provided is a gene target region enrichment method and a kit. The method comprises (1) amplifying fragmented DNA comprising a target region by means of a specific probe so as to obtain a captured-extension product, wherein the specific probe comprises a sequence complementary to the target region of the fragmented DNA, and the 3? terminal nucleotide of the specific probe is modified to prevent a ligation reaction at the 3? terminal of the specific probe; and (2) linking the 3? terminal of the captured-extension product obtained in step (1) to linker DNA to obtain a ligation product.

Abstract: A hydrofoil cavitating flow control structure includes a hydrofoil. A primary protuberant stripe is disposed in a middle position of a suction side of the hydrofoil, a plurality of symmetrically-distributed secondary protuberant stripes are disposed obliquely at both sides of the primary protuberant stripe, and the plurality of secondary protuberant stripes are uniformly and equidistantly distributed along the length direction of the primary protuberant stripe. By changing geometric parameters such as an included angle between the primary protuberant stripe and the second protuberant stripe, a ratio of cross section diameters and a distribution spacing of the second protuberant stripes along a chord length direction of the hydrofoil and the like, the shedding of cloud cavitation on a hydrofoil surface is effectively suppressed, and cavitation erosion and pressure pulsation generated by cavitation collapse is reduced, thus improving the operation efficiency and the service life of hydraulic machinery.

Abstract: Embodiments of this application provide a user hearing protection method, apparatus, and electronic device. In the user hearing protection method, after an electronic device enables a hearing protection mode, when an audio output mode is a headset output, sound pressure output by the headset is obtained based on current-frame sound source data; when the sound pressure is greater than a predetermined sound pressure threshold, an instantaneous sound pressure over-standard warning is performed, and an instantaneous sound pressure over-standard protection operation is performed on the electronic device, and a user's hearing can be protected when the instantaneous sound pressure exceeds a standard.

Abstract: The present invention provides an enrichment method for a gene target region, the method comprising: (1) amplifying, by means of a specific probe, fragmented DNA including a target region, and providing a captured extension product, wherein the specific probe comprises a sequence that is complementary to the target region of the fragmented DNA, and a 3?-end nucleotide and a 5?-end nucleotide of the probe are both modified; and (2) adding a ligase to the captured extension product provided in step (1), and providing a ligation product. The invention further provides an enrichment system for a gene target, the system being applicable to the enrichment method for a gene target region provided in the present invention.

Abstract: Embodiments of this application provide a page processing method and related apparatus. The method includes previewing a target page in an application program; obtaining a page structure of the previewed target page, the page structure of the target page identifying a layout of page elements of the target page in the target page; obtaining a page structure of a skeleton screen corresponding to the target page based on the page structure of the target page, the page structure of the skeleton screen identifying a layout of placeholder elements of the skeleton screen on the skeleton screen, the placeholder elements being obtained by processing the page elements; and generating a view file of the skeleton screen according to the page structure of the skeleton screen, the skeleton screen being displayed before the target page is loaded.

Abstract: An electronic device receives an interface calling request for a target interface in an application program. The interface calling request includes interface calling information of the target interface. The device performs an interface query in a simulated interface set that simulates real interfaces in the application program. In accordance with a determination, based on the interface query, that a target simulation interface corresponding to the target interface exists in the simulated interface set, the device intercepts the interface calling request. The device compares the intercepted interface calling information with interface configuration information of the target simulated interface. In accordance with a determination that the interface calling information matches the interface configuration information, the device obtains simulated response data corresponding to the target simulation interface. The device outputs calling response data of the interface calling request.

Abstract: This application discloses an information recommendation method and apparatus, a device, and a storage medium, and belongs to the field of information recommendation. The method includes starting an application program according to a start operation, a first account being logged in in the application program; obtaining a recommended information flow for the first account, recommended information in the recommended information flow including at least one piece of interactive recommended information, the interactive recommended information being information for which a second account generates an interactive message, the first account and the second account having a social relationship; and displaying an information presentation interface, the information presentation interface comprising the recommended information displayed in an information flow form.

Abstract: Provided is a method for estimating optimal efficiency point parameters in an axial-flow PAT power generation mode, including: I1, calculating an axial velocity of an optimal efficiency point; I2, calculating a flow rate of the optimal efficiency point; I3, calculating a theoretical hydraulic head; I4, calculating a frictional hydraulic head loss and a local hydraulic head loss of each segment; I5, calculating an output power of the optimal efficiency point; I6, calculating a hydraulic head of the optimal efficiency point in a power generation mode; and I7, calculating an optimal efficiency. Further provided is a method for estimating a performance curve in an axial-flow PAT power generation mode based on the above method for estimating an optimal efficiency point parameter, including: II1, calculating a normalized flow-hydraulic head curve; II2, calculating a normalized hydraulic head-output power curve; and II3, calculating a hydraulic head-efficiency curve.

Abstract: This application discloses an information recommendation method and apparatus, a device, and a storage medium, and belongs to the field of information recommendation. The method includes starting an application program according to a start operation, a first account being logged in in the application program; obtaining a recommended information flow for the first account, recommended information in the recommended information flow including at least one piece of interactive recommended information, the interactive recommended information being information for which a second account generates an interactive message, the first account and the second account having a social relationship; and displaying an information presentation interface, the information presentation interface comprising the recommended information displayed in an information flow form.

Abstract: Provided is a method for estimating optimal efficiency point parameters in an axial-flow PAT power generation mode, including: I1, calculating an axial velocity of an optimal efficiency point; I2, calculating a flow rate of the optimal efficiency point; I3, calculating a theoretical hydraulic head; I4, calculating a frictional hydraulic head loss and a local hydraulic head loss of each segment; I5, calculating an output power of the optimal efficiency point; I6, calculating a hydraulic head of the optimal efficiency point in a power generation mode; and I7, calculating an optimal efficiency. Further provided is a method for estimating a performance curve in an axial-flow PAT power generation mode based on the above method for estimating an optimal efficiency point parameter, including: II1, calculating a normalized flow-hydraulic head curve; II2, calculating a normalized hydraulic head-output power curve; and II3, calculating a hydraulic head-efficiency curve.

Abstract: Compounds having drug and bio-affecting properties, their pharmaceutical compositions and methods of use are set forth. In particular, betulinic acid derivaties that possess unique antiviral activity are provided as HIV maturation inhibitors, as represented by compounds of Formulas I, II and III: These compounds are useful for the treatment of HIV and AIDS.