Abstract: The present invention belongs to the field of petrochemical industry, and discloses a method for selective hydrogenation of butadiene extraction tail gas and a selective hydrogenation apparatus thereof.

Abstract: A text recognition method and apparatus disclosed. The text recognition method includes: obtaining a to-be-detected image; determining a target text detection area in the to-be-detected image, where the target text detection area includes target text in the to-be-detected image, and the target text detection area is a polygonal area including m vertex pairs, m being a positive integer greater than 2; correcting the polygonal area to m?1 rectangular areas to obtain a corrected target text detection area; and performing text recognition on the corrected target text detection area to determine the target text, and outputting the target text.

Abstract: The present invention provides a method and system for acquiring operating parameters of a photographic lens, including: a control circuit and a storage unit that are configured in the photographic lens, where the control circuit acquires an operating parameter of the photographic lens by using a focusing ring position sensor, a zoom ring position sensor, an aperture ring position sensor, an accelerometer and a gyro sensor; and the control circuit is further connected to a camera or an external data reading device by using a communication interface, to output the operating parameter after data encapsulation in real time.

Abstract: Disclosed is an automatic hoisting and transporting method for a tower crane, the method including: building a three-dimensional grid model for a construction site, and generating a grid node set; generating an obstacle node set and a feasible area node set; obtaining coordinates of an initial node and an end node; planning a hoisting and transporting path from the initial node to the end node, and generating corresponding operating parameters; controlling the tower crane to transport an object according to the operating parameters, and calculating a swing range of the hoisted and transported object and a swing arm at a current position; determining whether a collision may occur; and predicting whether the tower crane may be overturned. The method realizes automatic hoisting and transporting of the tower crane. The object does not collide with an obstacle during hoisting and transporting, thereby ensuring safe operation of the tower crane.

Abstract: A polyurethane composition suitable for coating a surface of a substrate. The polyurethane composition can include an aliphatic polyester urethane matrix and a fluorinated ionic antistatic additive. The aliphatic polyester urethane matrix can comprise an aliphatic diisocyanate, a polyester polyol having a polyester diol and a polyester triol, and sulfonated polyester urethane polyol.

Abstract: The present invention provides a method and system for acquiring operating parameters of a photographic lens, including: a control circuit and a storage unit that are configured in the photographic lens, where the control circuit acquires an operating parameter of the photographic lens by using a focusing ring position sensor, a zoom ring position sensor, an aperture ring position sensor, an accelerometer and a gyro sensor; and the control circuit is further connected to a camera or an external data reading device by using a communication interface, to output the operating parameter after data encapsulation in real time.

Abstract: Disclosed are polyurethane-polysiloxane hybrid coating compositions (PUPSHCC) and their uses, processes for their preparation, and substrates incorporating the coating compositions.

Abstract: A text recognition method and apparatus that relate to the field of information processing technologies are provided. This effectively resolves a low recognition rate of curved text. The text recognition method includes: obtaining a to-be-detected image; determining a target text detection area in the to-be-detected image, where the target text detection area includes target text in the to-be-detected image, and the target text detection area is a polygonal area including m (m is a positive integer greater than 2) vertex pairs; correcting the polygonal area to m?1 rectangular areas to obtain a corrected target text detection area; and performing text recognition on the corrected target text detection area, and outputting the target text.

Abstract: A polyurethane composition suitable for coating a surface of a substrate. The polyurethane composition can include an aliphatic polyester urethane matrix and a fluorinated ionic antistatic additive. The aliphatic polyester urethane matrix can comprise an aliphatic diisocyanate, a polyester polyol having a polyester diol and a polyester triol, and sulfonated polyester urethane polyol.

Abstract: A polyurethane composition suitable for coating a surface of a substrate. The polyurethane composition can include an aliphatic polyester urethane matrix and a fluorinated ionic antistatic additive. The aliphatic polyester urethane matrix can comprise an aliphatic diisocyanate, a polyester polyol having a polyester diol and a polyester triol, and sulfonated polyester urethane polyol.

Abstract: The present disclosure discloses a data transmission system of safety patrol on construction project site based on “internet plus” according to the present disclosure comprises a patrol apparatus for collecting and transmitting an on-site panorama image, 3D point cloud data of the scene, location information and construction on-site data; a cloud computing platform for receiving the on-site panorama image, the 3D point cloud data of the scene, the location information and the construction on-site data, and reconstructing a 3D model of a patrol scene based on the panorama images, the 3D point cloud data of the scene, the location information and the construction on-site data; a safety patrol data terminal providing inspection/browse to construction site; the present disclosure enable users to patrol in construction project remotely, reducing workload of the safety production management personnel, improving patrol efficiency, enhancing the intuitive reality of the patrol and the safety patrol level of the const

Abstract: The present disclosure discloses a data transmission system of safety patrol on construction project site based on “internet plus” according to the present disclosure comprises a patrol apparatus for collecting and transmitting an on-site panorama image, 3D point cloud data of the scene, location information and construction on-site data; a cloud computing platform for receiving the on-site panorama image, the 3D point cloud data of the scene, the location information and the construction on-site data, and reconstructing a 3D model of a patrol scene based on the panorama images, the 3D point cloud data of the scene, the location information and the construction on-site data; a safety patrol data terminal providing inspection/browse to construction site; the present disclosure enable users to patrol in construction project remotely, reducing workload of the safety production management personnel, improving patrol efficiency, enhancing the intuitive reality of the patrol and the safety patrol level of the const

Abstract: A polyurethane composition suitable for coating a surface of a substrate. The polyurethane composition can include an aliphatic polyester urethane matrix and a fluorinated ionic antistatic additive. The aliphatic polyester urethane matrix can comprise an aliphatic diisocyanate, a polyester polyol having a polyester diol and a polyester triol, and sulfonated polyester urethane polyol.

Abstract: A racing car steering wheel assembly provides an input/output interface for a participant in a multimedia interactive electronic game. Two primary paddles on the underside of the wheel control throttle and braking functions, respectively. Secondary paddles or buttons may be included on either the side of the wheel for optionally controlling gear selection. Integral accelerometers are included for determining wheel rotation. Steering inputs are caused either by rotation about a fixed point to which the wheel may be affixed or by rotation in free air. A wired or wireless interface to a PC or game console provides communication with game software and optional wired or wireless communication between the user and other individuals. Switches and buttons may be included to emulate controls on real race cars and for inputting game information. A panel display and/or a decorative logo plate may be included on the wheel.

Abstract: A racing car steering wheel assembly provides an input/output interface for a participant in a multimedia interactive electronic game. Two primary paddles on the underside of the wheel control throttle and braking functions, respectively. Secondary paddles or buttons may be included on either the side of the wheel for optionally controlling gear selection. Integral accelerometers are included for determining wheel rotation. Steering inputs are caused either by rotation about a fixed point to which the wheel may be affixed or by rotation in free air. A wired or wireless interface to a PC or game console provides communication with game software and optional wired or wireless communication between the user and other individuals. Switches and buttons may be included to emulate controls on real race cars and for inputting game information. A panel display and/or a decorative logo plate may be included on the wheel.

Abstract: An optical element includes a first lens; a cover; and a cured matrix polymer sandwiched between the first lens and the cover; the matrix polymer, prior to curing, having a monomer mixture dispersed therein; the matrix polymer being selected from the group consisting of polyester, polystyrene, polyacrylate, thiol-cured epoxy polymer, thiol-cured isocyanate polymer, and mixtures thereof; and the monomer mixture comprising a thiol monomer and at least one second monomer selected from the group consisting of ene monomer and yne monomer.

Abstract: Self-primed, printable formulations comprise: A. A polyurethane binder, B. An absorptive pigment, C. A crosslinker, D. An ultraviolet (UV) absorber, E. A light stabilizer, and F. Solvent. These formulations are coated to plastic substrates without the substrate first receiving a primer coating or other surface treatment to enhance print receptivity. These coatings provide a high performance, single layer, matte-finish, universal printable plastic media for use with a wide variety of printers and photocopiers. In one embodiment the single layer matte finish universal printable media is converted to a satin finish universal printable media by applying a gloss-promoting coating formulation over the single layer matte finish base layer.