Abstract: The present disclosure discloses a multistage electric cylinder. The multistage electric cylinder includes a cylinder barrel, a linear motion component. The linear motion component is axially movable in the cylinder barrel and includes a first screw rod; a second screw rod which is sleeved on the first screw rod; a screw rod nut which is installed on the second screw rod; an immovable tube which is coaxially fitted on an outer side of the first screw rod and an outer side of screw rod nut; a first protective tube which is coaxially fitted on an outer side of the immovable tube and moves along an axial direction of the immovable tube; and a second protective tube which is coaxially fitted on an outer side of the first protective tube and moves along an axial direction of the first protective tube.

Abstract: The present disclosure is related to an electric cylinder with a buffering device. The electric cylinder includes a cylinder barrel, a linear motion component and a buffering device. The linear motion component is axially movable in the cylinder barrel. A load end of the linear motion component is connected to a load, and a power end of the linear motion component is connected to a power source. The buffering device is provided close to at least one of the load end of the linear motion component or the power end of the linear motion component, so as to provide buffering for the at least one of the load end or the power end.

Abstract: Embodiments of the present disclosure provide a multistage electric cylinder. The multistage electric cylinder includes a cylinder barrel, a linear motion component. The linear motion component is axially movable in the cylinder barrel and includes a first screw rod; a second screw rod which is sleeved on the first screw rod; a screw rod nut which is installed on the second screw rod; an immovable tube which is coaxially fitted on an outer side of the first screw rod and an outer side of screw rod nut; a first protective tube which is coaxially fitted on an outer side of the immovable tube and moves along an axial direction of the immovable tube; and a second protective tube which is coaxially fitted on an outer side of the first protective tube and moves along an axial direction of the first protective tube.

Abstract: Embodiments of the present disclosure provide an electric cylinder with a buffering device. The electric cylinder includes a cylinder barrel, a linear motion component and a buffering device. The linear motion component is axially movable in the cylinder barrel. A load end of the linear motion component is connected to a load, and a power end of the linear motion component is connected to a power source. The buffering device is provided close to at least one of the load end of the linear motion component or the power end of the linear motion component, so as to provide buffering for the at least one of the load end or the power end.

Abstract: A method and for filtering broadcast data, which is applied to a gateway and includes steps of: obtaining a current broadcast message broadcast by a piece of terminal equipment; determining signature information of current broadcast data in the current broadcast message; comparing the signature information corresponding to the current broadcast message with signature information corresponding to various valid broadcast messages received by the gateway to determine whether a first valid broadcast message being the same as the current broadcast message is presented in the various valid broadcast messages. If the first valid broadcast message is presented, the current broadcast message is determined to be a duplicate broadcast message, and the current broadcast message is discarded; if the first valid broadcast message is not presented, the current broadcast message is determined to be a newly-received valid broadcast message.

Abstract: The present invention discloses a method of reducing octane loss in catalytic cracking of gasoline in S-Zorb plant. The method comprises following steps: a. Collecting equipment data and adjusting differences thereamong to construct initial data sample set; b. Collating data sample set; c. Employing local linear embedding to reduce dimension of independent variables, and trimming the independent variables to obtain reserved independent variables; d. Calculating correlation coefficients of the reserved independent variables and removing variables with too high correlation coefficients to obtain main variables; e. Constructing a BP neural network model of the main variables to obtain optimal octane loss prediction model; f. Employing the optimal octane loss prediction model to obtain a predicted optimal operating condition for each main variable. The present invention has advantage of reducing octane loss and improving quality of refined oil.

Abstract: The present invention discloses a method of reducing octane loss in catalytic cracking of gasoline in S-Zorb plant. The method comprises following steps: a. Collecting equipment data and adjusting differences thereamong to construct initial data sample set; b. Collating data sample set; c. Employing local linear s embedding to reduce dimension of independent variables, and trimming the independent variables to obtain reserved independent variables; d. Calculating correlation coefficients of the reserved independent variables and removing variables with too high correlation coefficients to obtain main variables; e. Constructing a BP neural network model of the main variables to obtain optimal octane loss prediction model; f. Employing the optimal octane loss prediction model to obtain a predicted optimal operating condition for each main variable. The present invention is different from traditional chemical mechanism method at aspect of building FCC technology process.

Abstract: The present disclosure relates to a welding quality detecting field, and specifically relates to a quality detection device. The quality detection device includes an integrated probe set, a driving module and a collecting module. The integrated probe set includes a plurality of integrated probe assemblies. The integrated probe assemblies are disposed in pairs and each integrated probe assembly includes a driving end and a collecting end. The driving end of one integrated probe assembly is matched with the driving end of another integrated probe assembly disposed in pairs with the one integrated probe assembly. The collecting end of one integrated probe assembly is matched with the collecting end of another integrated probe assembly disposed in pairs with the one integrated probe assembly.

Abstract: The present disclosure relates to a welding quality detecting field, and specifically relates to a quality detection device. The quality detection device includes an integrated probe set, a driving module and a collecting module. The integrated probe set includes a plurality of integrated probe assemblies. The integrated probe assemblies are disposed in pairs and each integrated probe assembly includes a driving end and a collecting end. The driving end of one integrated probe assembly is matched with the driving end of another integrated probe assembly disposed in pairs with the one integrated probe assembly. The collecting end of one integrated probe assembly is matched with the collecting end of another integrated probe assembly disposed in pairs with the one integrated probe assembly.

Abstract: A pharmaceutical composition comprising protein micro and/or nanoparticles are provided. The particles have a predetermined geometric shape and a broadest dimension less than about 10 micrometers. The particles may further comprise active agents.

Abstract: A mounting apparatus for holding an expansion card with a slot cover, the mounting apparatus comprises a rear panel and a fastener. The rear panel defines a slot, and forms a holder above the slot. The holder forms a pivoting axis at a free end thereof, and the pivoting axis is in parallel with the rear panel. The fastener is pivotably attached to the pivoting axis, and comprises a pressing portion pressing the slot cover to the holder and a locking portion locked to the rear panel.

Abstract: A mounting apparatus for holding a storage device with a mounting hole comprises a bracket, an operating member, and a fastener. The bracket comprises a first sidewall connected to a second sidewall, and the second sidewall is generally perpendicular to the first sidewall. The storage device is disposed in the bracket. A fastener is pivotally attachable to the first sidewall of the bracket, and a mounting tab is formed from the fastener. An operating member is movably attached to the second sidewall of the bracket and connectable to the fastener. The fastener is pivoted by moving the operating member so that the mounting tab of the fastener is inserted into the mounting hole of the storage device for latching the storage device. Thus, the storage device is locked in the bracket.

Abstract: A stand for retaining a computer chassis includes a base frame, a pair of clamping arms, and a pair of pivoting members. Each of the pivoting members includes a linking portion connected to each of the clamping arms, and a pivoting portion pivotally connected to two ends of the base frame. The pivoting portion includes a device by which the clamping arms capable of being turned to a position and kept in the position.

Abstract: The invention provides a polymer, useful as a surfactant and textile reagent, comprising: (a) monomeric units containing a lipophobic group, said monomeric units comprising a compound of Formula: (I); wherein: Z is a spacer; R is H or methyl; Rf is a lipophobic group, R2 and R3 are each independently H or halo; X is —O— or a covalent bond; and o is 0 or 1 or 2; (b) optionally but preferably, monomeric units containing an attachment group; and (c) optionally but preferably, monomeric units containing a hydrophobic group.

Abstract: A fixing apparatus is provided for holding a data storage device which defines a hole in a side wall thereof. The fixing apparatus includes a drive bracket, and a receiving rack. The drive bracket includes a side panel. The receiving rack includes a side plate, a pin arranged on the side plate to engage in the hole of the data storage device, and a handle being lockable to the side panel of the drive bracket. The data storage device is slantways placed into the receiving rack from a side opposite to the side plate. The combined receiving rack and the data storage device is received in the drive bracket.

Abstract: A mounting apparatus includes a bracket (20), a slidable member (40), a retention member (50), and a pair of shock absorbers (80). The bracket is for receiving a storage device (10) therein, the bracket including a pair of opposite first and second sidewalls (24, 26), and a pair of through holes (246) is defined in the first sidewall. The slidable member is movably attached to the first sidewall of the bracket. The retention member is spring-loaded, and is movable relative to the slidable member and the first sidewall respectively in different directions. A pair of latches (54) is formed on the retention member, the latches being capable of being extended through the through holes respectively for engaging the storage device. The shock absorber is arranged to an internal surface of the second sidewall for engaging the storage device.

Abstract: A fixing mechanism for securing a printed circuit board (10) to a computer chassis, includes a fixing board (20), a tray (60) for securing the printed circuit board, and a driving device (40). The fixing board forms a number of fastening portions (21) to engage in fastening holes (65) of the tray. The driving device includes a sliding board (41) slidably attached to the fixing board, a pull handle (47) pivotally connected to the fixing board, a connecting block (43) arranged to the pull handle, and a linking element (45). The linking element connects the connecting block to the sliding board, the tray is connected to the sliding board. The pull handle is rotated to move the tray between a locked position and an unlocked position.