Abstract: Disclosed is an expression vector comprising a polynucleotide encoding for a glutamine synthetase with reduced activity compared to a wild type glutamine synthetase. Also disclosed are host cells, methods for preparing stable cell line, methods of producing polypeptide of interest, and kits thereof.

Abstract: Disclosed is an expression vector comprising a polynucleotide encoding for a glutamine synthetase with reduced activity compared to a wild type glutamine synthetase. Also disclosed are host cells, methods for preparing stable cell line, methods of producing polypeptide of interest, and kits thereof.

Abstract: The disclosure provides a camera module including a light penetration chamber, a transparent window, a gasket, and a lens module. The transparent window covers the light penetration chamber. The gasket is integrally formed with the transparent window. The gasket includes a receiving cavity coaxial with the light penetration chamber. The lens module is received in the receiving cavity. The lens module includes a lens exposing hole that aligns with and is coaxial with the light penetration chamber, the lens exposing hole allows ambient light to be transmitted into the lens module.

Abstract: A brightness regulation system includes a plurality of illumination devices, a portable electronic device, and a management device. The portable electronic device detects a brightness value of a local environment. The management device compares the brightness value of the local environment with a predetermined value, and regulates brightness of the illumination device in a preset area where the portable electronic device is located according to the comparison.

Abstract: A buckling restrained brace includes an axial member, a plurality of restraining members, and a plurality of securing units. The axial member includes a middle section extending in an axial direction, and a pair of coupling sections extending respectively from opposite ends of the middle section and that are adapted to be coupled fixedly to two connecting plates of a framework of a building, respectively. The restraining members extend in the axial direction, and are disposed around and contact the axial member. Each securing unit secures an adjacent pair of the restraining members together. Each restraining member cooperates with an adjacent one of the restraining members to define an opening therebetween through which a portion of the axial member is exposed for viewing.

Abstract: A battery cover assembly for a portable electronic device includes a base body, a battery cover, a pivot member, and a button. The base body forms two support portions. The battery cover forms a clasp. The pivot member is received in the support portions. The button is rotatably connected to the base body by the pivot member. The latch member forms two latch plates. The clasp engages with the latch plates to allow the battery cover to releasably latch to the housing.

Abstract: A buckling restrained brace is for connection between two connecting plates of a framework, and includes a restraining unit and an axial member. The axial member includes a middle section surrounded by the restraining unit, two first coupling sections, and two second coupling sections. The first coupling sections are connected respectively and perpendicularly to opposite longitudinal end portions of the middle section. Each first coupling section has a portion exposed from a respective one of longitudinal ends of the restraining unit, and is formed with a first coupling groove for engaging a respective one of the connecting plates. The second coupling sections are connected respectively and perpendicularly to the opposite longitudinal ends of the middle section. Each second coupling section has a portion exposed from a respective one of the longitudinal end portions of the restraining unit, and is formed with a second coupling groove for engaging a respective one of the connecting plates.

Abstract: A socket connector for a digital camera module includes a base, a plurality of contact terminals, and a flex printed circuit board. The base includes a base body and a plurality of arms extending from the base. The contact terminals are mounted in the base, each contact terminal including an angled portion and a bent portion, the angled portion electronically connected to the digital cameral module. The flex printed circuit board is electronically connected to the bent portion.

Abstract: A battery cover assembly for a portable electronic device includes a base body, a battery cover, a pivot member, and a button. The base body forms two support portions. The battery cover forms a clasp. The pivot member is received in the support portions. The button is rotatably connected to the base body by the pivot member. The latch member forms two latch plates. The clasp engages with the latch plates to allow the battery cover to releasably latch to the housing.

Abstract: A socket connector for a digital camera module includes a base, a plurality of contact terminals, and a flex printed circuit board. The base includes a base body and a plurality of arms extending from the base. The contact terminals are mounted in the base, each contact terminal including an angled portion and a bent portion, the angled portion electronically connected to the digital cameral module. The flex printed circuit board is electronically connected to the bent portion.

Abstract: A housing assembly (10) and a portable electronic device (100) using the housing assembly is provided. The housing assembly includes a main body (12), a first decorative member (14), and a second decorative (16). The first decorative member has a first appearance, and the first decorative member (14) is mounted to the outer wall of the main body. The second decorative member (16) has a second appearance that is different from the first appearance, and the second decorative member (16) is mounted to the outer wall of the main body (16). The portable electronic device (100) further includes an another housing assembly. The housing assembly is assembled with another housing assembly).

Abstract: A housing assembly (10) and a portable electronic device (100) using the housing assembly is provided. The housing assembly includes a main body (12), a first decorative member (14), and a second decorative (16). The first decorative member has a first appearance, and the first decorative member (14) is mounted to the outer wall of the main body. The second decorative member (16) has a second appearance that is different from the first appearance, and the second decorative member (16) is mounted to the outer wall of the main body (16). The portable electronic device (100) further includes an another housing assembly. The housing assembly is assembled with another housing assembly).