Abstract: Provided herein is a reverse transcriptase mixture comprising a reverse transcriptase and a colored dye at a concentration in the range of 0.003%-1% (v/w). The colored dye may be visually observed during transfer of the mix from one vessel to another and addition of the mix to another mix can be confirmed by eye by observing the colored dye.

Abstract: An electronic device includes a housing, a camera module, and a decorative part. The housing is provided with a mounting hole. The camera module includes a lens and a module body connected to the lens. The decorative part includes a decorative part body and a skirt structure connected to the decorative part body. The decorative part body is disposed on the periphery of the lens and disposed in the mounting hole. The skirt structure is provided with a notch. The notch is opposite to the module body. An orthographic projection of a part of the module body opposite to the notch onto a plane of the skirt structure does not fall into the skirt structure.

Abstract: A cloud management component may detect a request associated with a new workload to be executed by a virtual machine deployed on a core of a central processing unit (CPU). The virtual machine may utilize a first virtual CPU (vCPU) and a second vCPU of the core. CPU feature may be enabled on the first vCPU and the second vCPU. An existing workload may utilize the CPU feature enabled on the first vCPU. The new workload is to be executed with the second vCPU without utilizing the CPU feature. The cloud management component may provide an instruction to disable the CPU feature enabled on the second vCPU. The cloud management component may configure an instruction intercept, for the second vCPU, to prevent execution of one or more instructions that cause the CPU feature to be executed by the second vCPU.

Abstract: A method for preparing an olefin-olefinic alcohol copolymer and an olefin-olefinic alcohol copolymer prepared by the method are provided. The catalyst used in the method for preparing the olefin-olefinic alcohol copolymer has a diimine metal complex as shown in Formula I.

Abstract: An electronic device includes a housing with a mounting hole, a camera module, and a decorative part. The camera module includes a lens and a module body connected to the lens. The decorative part includes a decorative part body and a skirt structure connected to the decorative part body. The skirt structure is provided with a notch. The notch is opposite to the module body. The skirt structure of the decorative part does not interfere with the camera module, such that the camera module is less prone to being damaged by the skirt structure.

Abstract: Provided herein is an engineered DNA polymerases containing an amino acid sequence selected from: an amino acid sequence that is at least 80% identical to an amino acid sequence selected from: SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:6, and SEQ ID NO:24; and an amino acid sequence that is at least 92% identical to an amino acid sequence selected from: SEQ ID NO:2 and SEQ ID NO:3. Also provided are methods employing the described DNA polymerases.

Abstract: A screen module uses a bendable display panel including a first panel layer and a second panel layer. A support layer is located between the first panel layer and the second panel layer. The first panel layer and the second panel layer are connected by a bent region, and a thickness of the support layer close to the bent region is greater than a thickness of a first region of the support layer. A projection of the first region of the support layer on the first panel layer overlaps with a projection of a display driver chip on the first panel layer. After being stacked, the thickness of the screen module may be reduced to meet the user's requirement for a small thickness of an electronic device.

Abstract: An electronic device has a middle frame with a middle frame hole. A screen chip and a screen outlet line are located on a first side of the middle frame, a battery is located on a second side of the middle frame, and the screen chip is laminated to a large surface of the screen outlet line. To avoid contact between the middle frame and the screen chip, the middle frame hole accommodates the screen chip, a protruding height of the screen chip relative to the large surface of the screen outlet line is less than a thickness of the middle frame hole, and a distance between the screen chip and the battery is greater than an avoidance distance of the screen chip. The screen chip is prevented from moving downward to be in contact with the middle frame when a user presses the display, thereby avoiding damage.

Abstract: A braking method includes: obtaining a first state information of the vehicle, which includes a vehicle mass and a deceleration required by braking; calculating a braking torque according to the first state information, and controlling the vehicle to output an electric braking torque according to the braking torque; obtaining a current vehicle speed and a mechanical braking application delay time; calculating an electric braking exit speed according to the braking torque required by the vehicle and the deceleration required by braking; calculating a mechanical braking application speed according to the mechanical braking application delay time, the deceleration required by braking, and the electric braking exit speed; and determining whether to control the vehicle to unload the electric braking torque, and whether to control the vehicle to apply a mechanical braking torque according to the current vehicle speed, the electric braking exit speed, and the mechanical braking application speed.

Abstract: This application provides a camera decoration assembly. The camera decoration assembly includes a decoration member, a mounting member and a fastener. The decoration member is exposed from a housing; and the decoration member and the mounting member are connected through the fastener or buckling, and are pressed on two opposite sides of the housing respectively. The mounting member includes a body and a conductor embedded in the body; and the conductor is of a metal structure, and is partially exposed from the body to be electrically connected to the decoration member and grounded. In the camera decoration assembly, the decoration member is mounted from outside of the housing, and the mounting member is mounted from inside of the housing, and is connected to the decoration member through the fastener or buckling. An appearance size of the decoration member located outside the housing is not limited by a size and a layout of an internal structure of a mobile terminal device.

Abstract: Provided are a wireless headset, an assembly method, an electronic device and a storage medium. The wireless headset includes a housing, a mainboard and a pressure sensitive component. The housing includes: a first chamber defined in a head portion of the wireless headset, and a second chamber defined in a rod portion of the wireless headset and in communication with the first chamber. The mainboard includes: a first circuit board disposed in the first chamber, a second circuit board disposed in the second chamber and provided with a relief portion, and an adapter circuit board disposed in the housing and configured to connect the first circuit board with the second circuit board. The pressure sensitive component is disposed in the second chamber and between the relief portion and the housing.

Abstract: Provided herein is a reverse transcriptase mixture comprising a reverse transcriptase and a colored dye at a concentration in the range of 0.003%-1% (v/w). The colored dye may be visually observed during transfer of the mix from one vessel to another and addition of the mix to another mix can be confirmed by eye by observing the colored dye.

Abstract: Embodiments of the invention provide a computer system that includes a central processing unit (CPU) associated with a host computer. The CPU includes CPU functionality and on-board enhanced CPU functionality. The CPU further includes a virtualized first instance of the CPU comprising an enabled virtualized first instance of the CPU functionality; and a non-enabled virtualized first instance of the on-chip enhanced CPU functionality. The CPU further includes a virtualized second instance of the CPU comprising an enabled virtualized second instance of the CPU functionality; and an enabled virtualized second instance of the on-chip enhanced CPU functionality.

Abstract: Provided herein is a reverse transcriptase mixture comprising a reverse transcriptase and a colored dye at a concentration in the range of 0.003%-1% (v/w). The colored dye may be visually observed during transfer of the mix from one vessel to another and addition of the mix to another mix can be confirmed by eye by observing the colored dye.

Abstract: A method for preparing polymer includes the steps of enabling olefin and unsaturated carboxylate be subjected to a polymerization reaction in the presence of a catalyst to generate an olefin-unsaturated carboxylate polymer. The catalyst has a primary catalyst and optionally a cocatalyst. The primary catalyst has at least one complex represented by formula I, formula I?, or formula I?. By selecting a reacted unsaturated carboxylate monomer, catalysts, and a suitable polymerization process, a spherical and/or sphere-like polymer having good shape is directly prepared without subsequent processing steps such as granulation, and the obtained polymer product is not prone to fouling in a reactor and is convenient for transportation.

Abstract: An electronic device has a middle frame with a middle frame hole. A screen chip and a screen outlet line are located on a first side of the middle frame, a battery is located on a second side of the middle frame, and the screen chip is laminated to a large surface of the screen outlet line. To avoid contact between the middle frame and the screen chip, the middle frame hole accommodates the screen chip, a protruding height of the screen chip relative to the large surface of the screen outlet line is less than a thickness of the middle frame hole, and a distance between the screen chip and the battery is greater than an avoidance distance of the screen chip. The screen chip is prevented from moving downward to be in contact with the middle frame when a user presses the display, thereby avoiding damage.

Abstract: A screen module uses a bendable display panel including a first panel layer and a second panel layer. A support layer is located between the first panel layer and the second panel layer. The first panel layer and the second panel layer are connected by a bent region, and a thickness of the support layer close to the bent region is greater than a thickness of a first region of the support layer. A projection of the first region of the support layer on the first panel layer overlaps with a projection of a display driver chip on the first panel layer. After being stacked, the thickness of the screen module may be reduced to meet the user's requirement for a small thickness of an electronic device.

Abstract: A braking method for a vehicle is provided. The method includes the following steps: obtaining a first state information of the vehicle, where the first state information includes a vehicle mass and a deceleration required by braking; calculating a braking torque required by the vehicle according to the first state information, and controlling an output of an electric braking torque according to the braking torque required by the vehicle; obtaining a current vehicle speed of the vehicle and a maximum electric braking exit speed; and; controlling, if the deceleration required by braking of the vehicle changes to zero, the vehicle to unload the electric braking torque when the current vehicle speed is less than the maximum electric braking exit speed. A braking device for a vehicle and a vehicle are further provided.

Abstract: Provided are a protecting trolley and a construction method of rock burst prewarning protection system in non-contact tunnel construction. The protecting trolley includes a framework, a walking assembly, a rockfall buffering assembly, a spraying assembly and a rock burst prewarning system. The rockfall buffering assembly includes an arch frame in a fixed connection with the framework and a protecting net fixed on the arch frame. The spraying assembly includes a track car in connection with the rockfall buffering assembly and a spraying hose fixed on the track car, and the spraying hose sprays towards the surrounding rock. The rock burst prewarning assembly includes a thermosensitive infrared sensor used for detecting the temperature of the surrounding rock and a highly sensitive laser sensor used for detecting the deformation of the surrounding rock.

Abstract: The present disclosure provides an earphone and an earphone assembly. The earphone includes a housing, a bracket inside the housing, and a sound unit inside the housing. The housing has a first hole and a second hole. The bracket has a channel. The channel includes a slot section and a hole section. The section includes an opening, a first port and a second port. An inner wall of the housing blocks the opening, the first port is in connection with the first hole, and the second port is in connection with the second hole. The hole section has a first end in connection with the slot section and a second end in connection with the sound unit. The bracket is between the housing and the sound unit.