Abstract: A drilling tool includes an outer cylinder; a power rotary shaft arranged in an inner chamber of the outer cylinder; a percussion generator arranged below the power rotary shaft, having a transmission shaft extending in the outer cylinder and can be driven by the power rotary shaft to rotate around its axis, an output main shaft engaged with a lower end of the transmission shaft so as to be driven by the transmission shaft to rotate about its axis and is movable relative to the transmission shaft along an axial direction, and an percussion assembly The percussion assembly is arranged between an annulus formed between the upper end of the output main shaft and the outer cylinder and can generate reciprocating impact along the axial direction on the output main shaft. A drilling bit connected with the output main shaft extending out of the inner chamber of the outer cylinder.

Abstract: The present disclosure discloses a fill light and a power supply circuit thereof, said power supply circuit is electrically connected to an external power supply device with PD protocol, and comprises a TYPE-C interface module, a PD induction module, a switching tube Q1 as well as a voltage stabilization module, said voltage stabilization module is a Buck-Boost switching power supply module, the input of said voltage stabilization module is connected with the drain of said switching tube Q1. The technical solution uses the PD induction module to disguise the fill light to be presented as an electric equipment for supporting PD protocol, so that the external power supply device with PD protocol can output high voltage above 12V, while using the Buck-Boost switching power module as the voltage stabilization module of this technical solution to improve the adaptability of the power circuit to the input voltage amplitude.

Abstract: Halite scales in an oilfield brine that has a potential for halite scaling can have halite scale formation inhibited or prevented by adding an effective amount of an additive, where the additive contains at least one non-water-soluble quaternary ammonium compound and at least one organic solvent. The quaternary ammonium compound may be benzyl-alkyldimethyl ammonium chloride, where the alkyl group has from 2 to 30 carbon atoms. The organic solvent may be one or more alcohol or glycol.

Abstract: Halite scales in an oilfield brine that has a potential for halite scaling can have halite scale formation inhibited or prevented by adding an effective amount of an additive, where the additive contains at least one non-water-soluble quaternary ammonium compound and at least one organic solvent. The quaternary ammonium compound may be benzyl-alkyldimethyl ammonium chloride, where the alkyl group has from 2 to 30 carbon atoms. The organic solvent may be one or more alcohol or glycol.

Abstract: The present disclosure discloses a fill light and a power supply circuit thereof, said power supply circuit is electrically connected to an external power supply device with PD protocol, and comprises a TYPE-C interface module, a PD induction module, a switching tube Q1 as well as a voltage stabilization module, said voltage stabilization module is a Buck-Boost switching power supply module, the input of said voltage stabilization module is connected with the drain of said switching tube Q1. The technical solution uses the PD induction module to disguise the fill light to be presented as an electric equipment for supporting PD protocol, so that the external power supply device with PD protocol can output high voltage above 12V, while using the Buck-Boost switching power module as the voltage stabilization module of this technical solution to improve the adaptability of the power circuit to the input voltage amplitude.

Abstract: A method for enhancing water chemistry at a surface for improved well performance may include testing water at the surface to identify a pH level of the water, a type of solid-generating component in the water, and an amount of a solid-generating component in the water. The method may also include identifying a type and an amount of an additive based on identifying the type and the amount of the solid-generating component, where the additive is configured to generate a solid when mixed with the water. The method may further include mixing the water and an additive at the surface to generate the solid and enhanced water, where the solid comprises at least some of the solid-generating components of the water. The enhanced water may be usable for a field operation to cause the improved well performance, and the solid may be removable from the enhanced water at the surface.

Abstract: The present invention relates to the field of pharmacogenomics, which applies one or more genomic biomarkers and the related diagnostic methods, devices, reagents, systems, and kits, for predicting varied individual responses such as, for example, efficacy or adverse effect, to therapeutic agents, e.g., inhibitors of certain neurotransmitter transporters such as liafensine.

Abstract: There is described a method of generating data indicative of a condition of an internal organ, the method comprising: receiving a plurality of images representing the internal organ; receiving landmark data associated with a selected image of the plurality of images; processing the landmark data and the selected image to extract a region of interest in the plurality of images; and processing the region of interest in the plurality of images to generate data indicative of a condition of the internal organ.

Abstract: A new corrosion inhibitor composition containing a carboxylic acid and its water soluble salts with zinc can be used for corrosion inhibition on the carbon steel pipe and heat exchangers in industrial cooling water. This new composition of matter contains less carboxylic acid and Zn2+ than previous formulations and still have >90% corrosion inhibition. It is disclosed that the synergistic effect of combining the carboxylic acid with very small amounts of Zn results in a product with good corrosion inhibition properties that is more environmentally friendly than the current common phosphonate corrosion inhibitors; particularly for use in cooling water applications.

Abstract: This invention discloses a bracket for correcting dentognathic deformity including a substrate plate, a bracket body, and two working wings. The bracket body has an arch wire groove, and the two working wings are located at two sides of the arch wire groove. Each of the working wings has a ligature wire locating groove, groove bottom central lines of the ligature wire locating grooves are located on a same straight line. The bracket body has a ligature hole vertical to the arch wire groove and penetrating through the bracket body, and a vertical distance from a bottom surface of the arch wire groove to an upper surface of the substrate plate is larger than a height of the ligature hole. The bracket further has a C-shaped movable lock accessory. The placement and removement of the movable lock is convenient, greatly reducing the operation time.

Abstract: This invention discloses a bracket for correcting dentognathic deformity including a substrate plate, a bracket body, and two working wings. The bracket body has an arch wire groove, and the working wings are located at two sides of the arch wire groove. The working wings have a ligature wire locating trench, and each wing has a ligature wire locating groove, groove bottom central lines of the ligature wire locating grooves are located on a same straight line. The bracket body has a ligature hole vertical to the arch wire groove and penetrating through the bracket body, and a vertical distance from a bottom surface of the arch wire groove to an upper surface of the substrate plate is larger than a height of the ligature hole. The bracket further has a C-shaped movable lock accessory. The placement and removement of the movable lock is convenient, greatly reducing the operation time.

Abstract: A method and circuit is disclosed for a laser system wherein the power of the laser signal is kept at a constant near optimum value and a portion of an frequency doubled output signal is monitored and detected so that noise within the frequency doubled output signal can be minimized. A feedback signal is used to dither the temperature of a frequency doubled crystal so as to minimize the noise in the frequency doubled output signal.

Abstract: A method and circuit is disclosed for a laser system wherein the power of the laser signal is kept at a constant near optimum value and a portion of an frequency doubled output signal is monitored and detected so that noise within the frequency doubled output signal can be minimized. A feedback signal is used to dither the temperature of a frequency doubled crystal so as to minimize the noise in the frequency doubled output signal.

Abstract: A method of embedding watermark data into a two-colour (binary) image includes dividing the image into blocks and assessing the suitability of each block to embed a bit of watermark data by assessing whether or not the flipping of a defined pixel in each block affects the visual attributes of said block in manner to be perceptible by the human eye. Data is only embedded in those blocks determined to be suitable for data embedding, by flipping the defined pixel, as required. A recipient of the document may similarly assess which blocks contain watermark data, by assessing the suitability of each block in the document to embed such data. Conveniently, watermark data may be extracted without further information about the data's location within a document.

Abstract: A method of embedding watermark data into a two-colour (binary) image includes dividing the image into blocks and assessing the suitability of each block to embed a bit of watermark data by assessing whether or not the flipping of a defined pixel in each block affects the visual attributes of said block in manner to be perceptible by the human eye. Data is only embedded in those blocks determined to be suitable for data embedding, by flipping the defined pixel, as required. A recipient of the document may similarly assess which blocks contain watermark data, by assessing the suitability of each block in the document to embed such data. Conveniently, watermark data may be extracted without further information about the data's location within a document.