Abstract: Poly(aryl piperidinium) polymers are provided which have an alkaline-stable cation, piperidinium, introduced into a rigid aromatic polymer backbone free of ether bonds. Hydroxide exchange membranes or hydroxide exchange ionomers formed from these polymers exhibit superior chemical stability, hydroxide conductivity, decreased water uptake, good solubility in selected solvents, and improved mechanical properties in an ambient dry state as compared to conventional hydroxide exchange membranes or ionomers. Hydroxide exchange membrane fuel cells comprising the poly(aryl piperidinium) polymers exhibit enhanced performance and durability at relatively high temperatures.

Abstract: Poly(aryl piperidinium) polymers are provided which have an alkaline-stable cation, piperidinium, introduced into a rigid aromatic polymer backbone free of ether bonds. Hydroxide exchange membranes or hydroxide exchange ionomers formed from these polymers exhibit superior chemical stability, hydroxide conductivity, decreased water uptake, good solubility in selected solvents, and improved mechanical properties in an ambient dry state as compared to conventional hydroxide exchange membranes or ionomers. Hydroxide exchange membrane fuel cells comprising the poly(aryl piperidinium) polymers exhibit enhanced performance and durability at relatively high temperatures.

Abstract: The invention discloses a back adjustable electrical bed frame, comprising a head panel, a back panel, a buttocks panel, a thigh panel and a shank panel, a back pusher motor and a leg pusher motor are configured below the back panel, the leg pusher motor drives the buttocks panel through a scissor support assembly, the shank panel moves back and forth and parallel to the base, a back panel pivot is configured at a quarter to a half of the lower part of the back panel, the back panel is fixed to the base by means of a column, one end of the column is fixed to the base and the other end of the column is connected to the back panel pivot, the front end pivot of the back pusher motor is connected with the back panel, and the rear end pivot is fixedly connected with the base; the front end pivot of the back pusher motor, the rear end pivot of the back pusher motor and the back panel pivot form a triangle to position the angle of the back panel.

Abstract: An adjustable mattress comprises a foldable bed frame, a decorative soft package covering the bed frame, and a plurality of independent barrel springs inside the bed frame. The plurality of independent barrel springs are arranged in a matrix. The bed frame and the independent barrel springs are covered with a cover cloth and an upper sealing mattress. The bed frame includes two transverse frames and two vertical frames, which are connected via bendable joints. The two transverse frames comprise two PVC sections connected by folding joints, and the two vertical frames comprises a plurality of PVC sections connected by bidirectional bending joints.

Abstract: A light source module comprises a substrate at an inner side of a fixing plate, a heat dissipation plate at an inner side of the substrate, a fixing base for elastic element at an inner side of the heat dissipation plate, a positive and a negative electrode elastic element. The substrate is connected with an illuminate element and formed with a positive and a negative electrode connecting portion for respectively connecting to the positive and negative electrodes of the illuminate element. The positive and negative electrode elastic elements are sleeved the fixing base and respectively formed with a positive and a negative electrode pin to connect to the positive and negative electrode connecting portions. Accordingly, the assembly is easier and more convenient, the bad connection or short circuit is not occurred, and the inner resistance and the power consumption are decreased.

Abstract: A communication number updating method is provided. The method includes obtaining an old communication number and a new communication number used by a same user account of an instant messenger for a user of the old communication number and the new communication number, generating a communication number change message which carries the old communication number and the new communication number, sending the communication number change message to a contact of the user account through the instant messenger, so that the instant messenger logged in by the contact of the user account automatically accesses a local address book and add the new communication number in a communication entry of the old communication number in the local address book.

Abstract: A photographing method includes entering the slow shutter photographing mode, dividing each frame of image of the photographed object into a light trail region, a background light source region, and a non-light-source region, merging the light trail regions of the frames of images, setting a merged light trail region as a light trail region of a target image, setting the background light source regions of one or more of the frames of images as a background light source region of the target image to avoid overexposure, merging the non-light-source regions of one or more of the frames of images, setting a merged non-light-source region as a non-light-source region of the target image to enhance brightness of the non-light-source region, and storing the target image after obtaining a photographing instruction.

Abstract: An intake system of engine comprises an intake pipe (8), an air intake manifold (6), and an auxiliary intake assembly (4) disposed on the intake pipe (8) and located before the air intake manifold (6) of an engine. The auxiliary intake assembly (4) comprises an auxiliary air inlet passage, an auxiliary air outlet passage (21), and a central passage (39). Air enters through the auxiliary air inlet passage, comes out from the auxiliary air outlet passage (21) and enters the central passage (39), so as to be mixed with air from the intake pipe (8). The present invention further relates to an engine intake system, comprising an electronic booster (4?) located upstream of the air intake manifold (6) of an engine. An air flow enters from an air inlet (4241?), flows out from an air outlet (4242?), is mixed with air that flows through the intake pipe (8), and then is inhaled into a cylinder of the engine. The present invention further relates to a engines comprising the above intake systems.

Abstract: A lithium ion battery and a charger thereof are provided. The lithium ion battery comprises a shell (1), a locating seat (2), an end cover (3), a battery cell (4), a positive contact (51), a positive plate (52), a negative plate (53), a positive connecting plate (61) and a negative connecting plate (62). The shell (1) is a one-step-molding cylinder with an upper opening. The positive contact (51) extends out from a contact extending hole (11) of the shell (1). A lower end face of the end cover (3) is tightly pressed on the negative plate (53) and the locating seat (2), where the end cover (3) is detachably connected with the upper opening of the shell (1). A cover edge of the end cover (3) cooperates with an end face of the upper opening of the shell (1). The lithium ion battery is conveniently detachable with the charger thereof.

Abstract: In a method for calculating vehicle insurance fee, core data transmitted from an electronic device in a vehicle is received. The core date includes information as to how the vehicle is driven, by recording the driving style of the driver e, purchase price of the vehicle, and other basic information. A driving risk level of the vehicle is determined according to the received core data. A comprehensive risk coefficient associated with the driving risk level is obtained. An insurance fee of the vehicle is calculated based on the comprehensive risk coefficient and a preset sheet of parameters.