Abstract: A display apparatus includes a display; a remote controller; a controller. The controller is configured to receive a first command for fitness training, cause the display to present one or more modes including a follow-up mode and an exercising-while-watching mode for selection; in response to selection of the follow-up mode, cause the display to show a first window and a second window disposed on a first user interface for receiving a focus move command from the remote control, with the first window displaying a first video associated with fitness training and the second window displaying a second video associated with image data from a camera; receive a volume adjustment command; in response to the focus being on a volume control for the first or second video, adjust a volume of the first or second video in response to the volume adjustment command. A method for controlling the apparatus is disclosed.

Abstract: A method and an apparatus for displaying an information flow on a terminal device, an electronic device, a computer-readable storage medium, and a computer program product are provided. An implementation is: in response to detecting an activation operation on an application for displaying the information flow, reproducing, on the terminal device, a first page displayed on the terminal device when the application is last switched to running in the background or closed; and in response to determining that a time interval between the activation operation and the application being last switched to running in the background or closed does not exceed a first threshold, displaying a second page as a continuation of a content entry displayed in the first page, where the second page includes at least one first content entry cached in the terminal device before the activation operation but not displayed in the first page.

Abstract: Provided are a display apparatus and a method. The display apparatus includes a display, an interface component configured to connect with a rotatable camera and a controller. The controller is configured for: obtaining a reference image captured by the camera, where the reference image comprises one or more persons with one or more face patterns; extracting a tracking target area from the reference image according to a current imaging parameter of the camera, where the tracking target area is a regular-shaped area determined according to one or more weights for the one or more face patterns, the current imaging parameter of the camera comprises a focal length of the lens component of the camera; and sending a rotation instruction to the camera to adjust an orientation of the camera to cause the tracking target area locate in a middle area of an image presented on the display.

Abstract: A display apparatus includes a display; a remote controller; a controller. The controller is configured to receive a first command for fitness training, cause the display to present one or more modes including a follow-up mode and an exercising-while-watching mode for selection; in response to selection of the follow-up mode, cause the display to show a first window and a second window disposed on a first user interface for receiving a focus move command from the remote control, with the first window displaying a first video associated with fitness training and the second window displaying a second video associated with image data from a camera; receive a volume adjustment command; in response to the focus being on a volume control for the first or second video, adjust a volume of the first or second video in response to the volume adjustment command. A method for controlling the apparatus is disclosed.

Abstract: A low turn-on voltage GaN diode having an anode metal with a consistent crystal orientation and a preparation method thereof. The low turn-on voltage GaN diode having an anode metal with a consistent crystal orientation provided by the present disclosure includes a substrate layer, a GaN buffer layer, a GaN channel layer and an AlGaN barrier layer, which are arranged in sequence from bottom to top; a cathode arranged on the AlGaN barrier layer; a groove arranged in the GaN channel layer and the AlGaN barrier layer, and an anode provided on a bottom and a side wall of the groove and part of the AlGaN barrier layer; a dielectric layer provided on an uncovered portion of the AlGaN barrier layer; wherein, a contact portion of the anode with the groove and the AlGaN barrier layer is W or Mo metal with a crystal orientation of <100>.

Abstract: Processes treat hair with aqueous compositions comprising one or more cationic polymers having certain cationic change densities and one or more aminated silicones. The novel processes provide long lasting conditioning to the hair and improve combability and suppleness of the hair which is maintainable up to twenty subsequent hair washes.

Abstract: The present invention discloses an epitaxial lift-off process of graphene-based gallium nitride (GaN), and principally solves the existing problems about complex lift-off technique, high cost, and poor quality of lift-off GaN films. The invention is achieved by: first, growing graphene on a well-polished copper foil by CVD method; then, transferring a plurality of layers of graphene onto a sapphire substrate; next, growing GaN epitaxial layer on the sapphire substrate with a plurality of graphene layers transferred by the metal organic chemical vapor deposition (MOCVD) method; finally, lifting off and transferring the GaN epitaxial layer onto a target substrate with a thermal release tape. With graphene, the present invention relieves the stress generated by the lattice mismatch between substrate and epitaxial layer; moreover, the present invention readily lifts off and transfers the epitaxial layer to the target substrate by means of weak Van der Waals forces between epitaxial layer and graphene.

Abstract: The present invention belongs to the technical field of metal materials for additive manufacturing, and relates to a Mn—Cu-based damping alloy powder for use in a selective laser melting (SLM) process and a preparation method thereof. The powder has chemical components in percent by weight as follows: C: ?0.15%, Ni: 4.9-5.2%, Si: ?0.15%, Fe: 1.8-5.0%, Cu: 20-23%, P: ?0.03%, S: ?0.06%, and the balance being Mn and inevitable impurities. The preparation method includes: preparation of master alloy, powdering by vacuum induction melting gas atomization (VIGA), mechanical vibrating and air classification screening under protection of an inert gas and collecting. Compared with the prior art, the powder of the present invention has a high sphericity, a high apparent density, a small angle of repose, a desired fluidity and a relatively high yield of fine powders having a size of 15-53 ?m.

Abstract: The present invention discloses a method for growing gallium nitride based on graphene and magnetron sputtered aluminum nitride, and a gallium nitride thin film. The method according to an embodiment comprises: spreading graphene over a substrate; magnetron sputtering an aluminum nitrite onto the graphene-coated substrate to obtain a substrate sputtered with aluminum nitrite; placing the substrate sputtered with aluminum nitride into a MOCVD reaction chamber and heat treating the substrate to obtain a heat treated substrate; growing an aluminum nitride transition layer on the heat treated substrate and a first and a second gallium nitride layer having different V-III ratios, respectively.

Abstract: Processes condition human hair by applying an aqueous composition onto the human hair such that the conditioned human hair achieves long lasting conditioning of the human hair and increasing hair temperature of the conditioned human hair to the range of 40 to 140° C., wherein the aqueous composition comprises one or more cationic quaternary ammonium polymers having a cationic charge density of 3.0 mEq/g or more and one or more nonionic surfactants.

Abstract: The present invention discloses an epitaxial lift-off process of graphene-based gallium nitride (GaN), and principally solves the existing problems about complex lift-off technique, high cost, and poor quality of lift-off GaN films. The invention is achieved by: first, growing graphene on a well-polished copper foil by CVD method; then, transferring a plurality of layers of graphene onto a sapphire substrate; next, growing GaN epitaxial layer on the sapphire substrate with a plurality of graphene layers transferred by the metal organic chemical vapor deposition (MOCVD) method; finally, lifting off and transferring the GaN epitaxial layer onto a target substrate with a thermal release tape. With graphene, the present invention relieves the stress generated by the lattice mismatch between substrate and epitaxial layer; moreover, the present invention readily lifts off and transfers the epitaxial layer to the target substrate by means of weak Van der Waals forces between epitaxial layer and graphene.

Abstract: A method for operating an aircraft is performed by a mobile terminal. The mobile terminal displays an aircraft operation interface on a touchscreen of the mobile terminal and monitors a touch control operation applied on the aircraft operation interface. After determining that the touch control operation is detected, the mobile terminal acquires sensor data from one or more sensors of the mobile terminal and obtains an aircraft operation command according to the sensor data. Finally, the mobile terminal sends the aircraft operation command to the aircraft that is wirelessly connected to the mobile terminal. The aircraft then performs a predefined operation according to the operation command.

Abstract: The present invention relates to a ring gear and a gear reduction device. The ring gear includes an annular body with a plurality of mounting portions, and a plurality of teeth arranged on an inner circumferential surface of the annular body. The annular body and the teeth are integrally formed from powder metal, and the mounting portions and the teeth are at least partly overlapped in an axial direction of the annular body. The mounting portions are integrally formed with the annular body and the teeth, which results in concentricity between the mounting portion and the teeth being improved and cost of the ring gear being reduced. Furthermore, the mounting portions are overlapped with the teeth, which reduces the axial size of the ring gear.

Abstract: Present embodiments provide for an optical imaging lens. The optical imaging lens includes a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element a sixth lens element, a seventh lens element and a eighth lens element positioned sequentially from an object side to an image side. Through arrangement of convex or concave surfaces of the eight lens elements, the length of the optical imaging lens may be shortened while providing better optical characteristics and imaging quality.

Abstract: In a well related to the production of hydrocarbons, an injection apparatus including: a base pipe including a radial port; an in-flow control device including a flow restriction device and a housing, with the housing being external and concentric of the base pipe. The housing includes a closed end portion and an open, opposite end portion and a housing channel communicating the opposite end portion. The flow restriction device is disposed at an intermediate location along the housing channel and adapted to control a rate of flow along the housing channel. A fluid transmissive screen is concentric of the base pipe and extends from the open, opposite end portion of the housing. A check valve assembly is interposed between the opposite end portion of the housing and a screened space.