Abstract: Disclosed is a drive circuit for a digital dimming LED light, relating to the LED light drive circuits, which includes a power module and a dimming module corresponding to the LED lights, wherein the dimming module comprises a demodulation unit, a boosting constant voltage unit and a constant current chopper unit, and the power module is used to convert a utility power into DC power and output it to the demodulation unit, and to receive an external dimming signal and modulate and convert it into a digital signal. The demodulation unit is connected to the power module for receiving and demodulating the digital signal, the constant current chopper unit is connected to the demodulation unit, and both the boosting constant voltage unit and the constant current chopper unit are connected with the LED lights, so that the brightness of the LED lights is consistent.

Abstract: A polymer dispersion includes a water-soluble copolymer prepared by controlled radical polymerization; a water soluble salt; a polyol; a salt selected from the group consisting of sodium citrate, sodium phosphate, sodium nitrate, and combinations thereof; and water. Methods for using the polymer dispersion for oilfield friction reduction occur under a variety of adverse conditions including low temperatures, salt, scale, and iron.

Abstract: Water-in-oil emulsions are provided that include an alkyl propylene diamine and an ethoxylated alcohol as the inverting surfactant, which is present in an amount less than 5 percent by weight of the water-in-oil emulsion.

Abstract: A surgical device includes a powered handle assembly, an adapter assembly extending from the handle assembly, and a tool assembly that is mounted to the adapter assembly about a pivot member. The handle assembly includes a clutch that is movable between an articulation position and a clamp/fire position. In the articulation position, the handle assembly is configured to provide powered articulation of the tool assembly about the pivot member. In the clamp/fire position, the handle assembly is configured to provide actuation of the surgical device.

Abstract: The present disclosure relates to a diffusion plate support frame, a direct-type backlight module and a display apparatus. The diffusion plate support frame includes: a bottom plate; and one or more support portions, each of the one or more support portions is located on the bottom plate and comprises: a first buffer structure, and a support pin. The first buffer structure is located between the bottom plate and the support pin, and the first buffer structure is used for buffering pressure when subjected to a pressure applied by the support pin towards the bottom plate.

Abstract: Disclosed is a BRCT clamping absorption circuit with short circuit protection, which relates to the technical field of short-circuit protection, includes a load module, a short-circuit detection module, a short-circuit protection module, a spike absorption module, a rectifying module, a clamping module and a main control module, wherein, the spike absorption module is connected with the load module, the rectifying module is connected with the spike absorption module, and the clamping module is connected with the rectifying module to form a clamping absorption protection for a spike voltage; the main control module is connected with the short-circuit detection module, and is used for controlling the on-off of a load regulator according to the short-circuit signal.

Abstract: A light emitting diode includes a first conductivity-type semiconductor layer, a second conductivity-type semiconductor layer, a light emitting layer, and a stress relief layer. The second conductivity-type semiconductor layer has a conductivity type opposite to that of the first conductivity-type semiconductor layer. The light emitting layer is disposed between the first conductivity-type semiconductor layer and the second conductivity-type semiconductor layer. The stress relief layer is disposed between the first conductivity-type semiconductor layer and the light emitting layer, and includes well layers and barrier layers stacked alternately. The stress relief layer further includes at least one blocking zone in at least one of the well layers. The at least one blocking zone has an energy gap greater than an energy gap of the at least one of the well layers. A method for manufacturing the light emitting diode is also disclosed.

Abstract: A construction building equipment includes hanging pedestals, sleeve frames, hydraulic cylinders, upper reversing boxes, lower reversing boxes and track columns. The multiple hanging pedestals are fixed on an outer side of a shear wall of an external wall. The sleeve frames and the track columns are clamped on the hanging pedestals. The sleeve frames are clamped on outer sides of the track columns. The lower reversing boxes are fixed at upper ends of the sleeve frames. The hydraulic cylinders are connected with the upper reversing boxes and the lower reversing boxes. Side surfaces of the track columns are provided with pane holes for cooperative climbing of the upper reversing boxes and the lower reversing boxes. Upper ends of the track columns are fixedly connected with a top platform. Hangers and formworks are suspended on the top platform through booms.

Abstract: A polymer dispersion may include a water soluble copolymer, a water soluble salt, a polyol, and water. A method of preparing a polymer dispersion may include controlled radical polymerization. A method of using the polymer dispersion as a friction reducer in oil field processes.

Abstract: A hydrolysis method for tert-butyl ester in gadolinium-based contrast agent comprises hydrolyzing the tert-butyl ester with a catalyst. The preparation method of the catalyst comprises the following steps: subjecting zirconia and titanium tetrachloride to reaction in the presence of sulfuric acid and water at 60° C. to 90° C. until solids are dissolved, adding silica to perform reaction for 1 to 5 h, filtering to obtain solids, washing and calcining the solids. This hydrolysis method does not introduce other substances that are difficult to remove, such as acids, and provides high hydrolysis efficiency and high purity of the obtained product.

Abstract: A polymer dispersion includes a water-soluble copolymer prepared by controlled radical polymerization; a water soluble salt; a polyol; a salt selected from the group consisting of sodium citrate, sodium phosphate, sodium nitrate, and combinations thereof; and water. Methods for using the polymer dispersion for oilfield friction reduction occur under a variety of adverse conditions including low temperatures, salt, scale, and iron.

Abstract: A linear joint includes a motor assembly includes a rotating shaft for outputting motion; a transmission mechanism including a screw and a nut threadedly connected to the screw, the nut being coaxial with respect to and securely connected to the rotating shaft so as to be rotatable together with the rotating shaft; and a rod connected to a first end of the screw so as to move together with the screw along a lengthwise direction of the screw.

Abstract: An array substrate and a manufacturing method thereof are provided. A plurality of groups of bonding terminals are formed on a substrate, a first electrostatic protection wire is formed on a marginal region of the substrate, and a second electrostatic protection wire is formed to connect the bonding terminals and the first electrostatic protection wire.

Abstract: A polymer dispersion includes a water-soluble copolymer prepared by controlled radical polymerization; a water soluble salt; a polyol; a salt selected from the group consisting of sodium citrate, sodium phosphate, sodium nitrate, and combinations thereof; and water. Methods for using the polymer dispersion for oilfield friction reduction occur under a variety of adverse conditions including low temperatures, salt, scale, and iron.

Abstract: Provided are methods for modifying the permeability of subterranean formations for the purposes of selectively reducing excessive production of water and aqueous fluids in oil and gas wells, wherein the methods utilize an emulsion containing a copolymer, which is typically prepared in an aqueous salt media.

Abstract: A handle assembly (12) of a hand-held surgical instrument (10) includes a handle housing (26), a motor (36), and a dual thread lead screw (46) operably coupled to the motor (36) and configured to move proximally and/or distally in response to an actuation of the motor (36). A first thread pitch of the lead screw (46) is suitable for effecting a closing of jaw members (20a, 20b) of an end effector (20), and a second thread pitch of the lead screw (46) is suitable for effecting a stapling function of the end effector (20).

Abstract: A solid-liquid battery comprises a positive electrode and a negative electrode, the negative electrode is made of metal lithium, a solid electrolyte is provided between the positive electrode and the negative electrode, an ester electrolyte solution is filled between the solid electrolyte and the positive electrode, and an ether electrolyte solution is filled between the solid electrolyte and the negative electrode.

Abstract: A perforating device includes a release sub, a rotating segment, a first centralizer, a braking segment, a casing collar locator, a traction mechanism, a second centralizer, a flex joint, a power supply segment, a shock absorber, a perforator, and a tail segment, which are in threaded connection sequentially to each other. The first joint assembly includes a first joint, a guide key, a connecting sleeve including a locking groove, a second joint, and an outer pipe; the first joint of the first joint assembly is in threaded connection to the cable bridle, and the second joint is in threaded connection to the outer pipe. The connecting sleeve is disposed inside the outer pipe and is connected to the first joint through the guide key. The second joint assembly includes a plurality of locking claws, a third joint, and a head.

Abstract: The present disclosure relates to a diffusion plate support frame, a direct-type backlight module and a display apparatus. The diffusion plate support frame includes: a bottom plate; and one or more support portions, each of the one or more support portions is located on the bottom plate and comprises: a first buffer structure, and a support pin.

Abstract: The present application relates to the field of touch technologies, and particularly to a touch panel, a manufacturing method thereof, and a display device. A touch panel, includes: a touch film layer and a fingerprint recognition film layer, an orthographic projection of the fingerprint recognition film layer on the touch panel at least partially coincides with an orthographic projection of the touch film layer on the touch panel.