Abstract: The present disclosure provides a bainite geological drilling pipe, comprising the following chemical elements in percentage by mass: 0.14-0.22% of C, 0.2-0.55% of Si, 2.1-2.9% of Mn, 0.01-0.04% of Nb, 0.015-0.04% of Al, 0.001-0.005% of B, 0<N?0.007%, with the balance being Fe and inevitable impurities, wherein a content ratio of Al to N is Al/N?3. In addition, the present disclosure further provides a manufacturing method for the bainite geological drilling pipe, comprising the following steps: (1) performing smelting and casting on molten steel to obtain a pipe blank; (2) performing heating, piercing, continuous rolling and sizing on the pipe blank to obtain a pipe body; and (3) performing two-stage air cooling on the pipe body; in first-stage air cooling, performing air circular blowing cooling on the outer surface of the pipe body, the temperature before cooling is greater than or equal to Ar/3+50° C., the cooling rate is 5-15° C./s, and cooling to a temperature range from Bs-100° C. to Bs-50° C.

Abstract: An air conditioner includes a housing having an air outlet chamber, an air treatment apparatus disposed in the housing, and an air guide mechanism movably disposed in the housing. A vent connecting the air outlet chamber with outside is formed at a sidewall of the air outlet chamber. The air treatment apparatus includes an air treatment unit and has an air inlet. The air guide mechanism is configured to connect an inner cavity of the air treatment unit with outside or isolate the inner cavity of the air treatment unit from outside. When the inner cavity of the air treatment unit is in communication with outside, air entering through the air inlet flows through the air treatment unit and into the air outlet chamber, and then flows out through the vent.

Abstract: Provided are an air purification device (100) and an air conditioner (1000). The air purification device (100) includes a housing (1), a filter module (2), and a plurality of power supply elements (3). The housing (1) has an accommodation cavity (11). The filter module (2) is disposed within the accommodation cavity (11) and has a plurality of electrical connectors (21) provided thereon and arranged at intervals in a first direction. The plurality of power supply elements (3) are arranged at intervals at the housing (1) in the first direction and have a one-to-one correspondence with the plurality of electrical connectors (21). Each of the plurality of power supply elements (3) has a plurality of power supply contacts (31). When the plurality of electrical connectors (21) is in contact with one of the plurality of power supply contacts (31) of each of the plurality of power supply elements (3), the power supply elements (3) is electrically connected to the electrical connectors (21).

Abstract: The present invention relates to the technical field of catalyst preparation, disclosing a preparation method and application of a coated vanadium-tungsten-titanium oxide monolithic SCR catalyst. The method includes the steps of mixing a vanadium oxide precursor, a tungsten oxide precursor, titanium dioxide, an inorganic adhesive, an organic adhesive and a macromolecular surfactant with deionized water and stirring them to obtain a thick liquid; adding a pH adjuster to the thick liquid to make its pH 1.5-4.5; impregnating a cordierite honeycomb carrier in the thick liquid to obtain a preliminarily-impregnated catalyst and dried and calcined the preliminarily-impregnated catalyst to obtain a finished catalyst. The method has advantages such as simple operation, easy repetition and short time-consuming, so it can be applied to exhaust gas post-treatment of a marine diesel engine, and provide a good choice for catalysts used to denitrify medium and high temperature exhausted gas from marine engines.

Abstract: A flow splitting device for gas reverse circulation drilling, including: an upper joint for connecting with a double-wall drill pipe; an inner tube which is arranged in the upper joint and defines a first passageway in communication with an inner chamber of the double-wall drill pipe, a second passageway in communication with an annular space in the double-wall drill pipe formed between the inner tube and the upper joint; a lower joint, having an upper end fixedly connected with the upper joint and a lower end for connecting with a drill tool; and a flow guiding member provided between the upper joint and the lower joint. A flexible sealing mechanism is provided outside the upper joint. The flexible sealing mechanism extends radially outward relative to the upper joint and the lower joint to form a sealing contact with a wellbore wall.

Abstract: Embodiments of the present disclosure relate to a D-amino acid oxidase mutant and application in preparing L-glufosinate thereof. The D-amino acid oxidase mutant has an amino acid substitution at at least one of position 62 and position 226 of an amino acid sequence of the D-amino acid oxidase mutant when compared to an amino acid sequence of a D-amino acid oxidase as set forth in SEQ ID NO. 1, the position 62 and position 226 being defined with reference to SEQ ID NO. 1, and the amino acid sequence of the D-amino acid oxidase mutant having at least 90% identity to SEQ ID NO. 1.

Abstract: An electronic-grade glass fiber composition includes the following components with corresponding amounts by weight percentages 51.0-57.5% SiO2, 11.0-17.0% Al2O3, >4.5% and ?6.4% B2O3, 19.5-24.8% CaO, 0.1-1.9% MgO, 0.05-1.2% R2O=Na2O+K2O+Li2O, 0.05-0.8% Fe2O3, 0.01-1.0% TiO2, and 0.01-1.0% F2. A weight percentage ratio C1=SiO2/B2O3 is 8.1-12.7, a weight percentage ratio C2=B2O3/(R2O+MgO) is 1.7-6.3, and a total weight percentage of the above components is greater than or equal to 99%.

Abstract: The present invention relates to malate salt of a multi-tyrosine kinase inhibitor. In particular, the present invention relates to crystalline forms of the malate salt of multi-tyrosine kinase inhibitor N-(3-fluoro-4-((2-(5-(((2-methoxyethyl)amino)methyl)pyridin-2-yl)thieno[3,2-b]pyridin-7-yl)oxy)phenyl)-N-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide (S)-2-hydroxysuccinate (1:1), pharmaceutical compositions comprising the crystalline form, processes for preparing the crystalline form and methods of use therefore.

Abstract: An anti-collapse oil casing with high strength and a manufacturing method therefor, comprising the following chemical elements in percentage by mass: C:0.08%-0.18%; Si:0.1%-0.4%; Mn:0.1%-0.28%; Cr:0.2%-0.8%; Mo:0.2%-0.6%; Nb:0.02%-0.08% b; V:0.01%-0.15%; Ti:0.02%-0.05%; B:0.0015%-0.005%; and Al:0.01%-0.05%. The manufacturing method for the anti-collapse oil casing with high strength comprises the steps of: (1) smelting and continuous casting; (2) perforating, rolling, and sizing; (3) controlled cooling: the initial cooling temperature being Ar3+50° C. and the final cooling temperature being ?80° C.; the cooling step being performed only to the outer surface of the casing without performing to the inner wall of the casing; and the rate of the controlled cooling being 30-70° C./s; (4) tempering; and (5) thermal straightening.

Abstract: An aqueous coating composition comprising (a) from 12.5% to 87% by weight based on the weight of the aqueous coating composition, of a film-forming polymer; (b) from 9.5% to 85% by weight based on the weight of the film-forming polymer, of a specific oligomer; and (c) from 2.5% to 50% by weight based on the weight of the film-forming polymer, of beads with a mean particle size of from 5.0 to 10.5 ?m; and a process for preparing the aqueous coating composition.

Abstract: The present disclosure belongs to the field of radio frequency circuit design, and in particular relates to a M×N millimeter wave and terahertz planar dipole end-fire array antenna. The M×N millimeter wave and terahertz planar dipole end-fire array antenna is composed of M paths of N× end-fire linear array antennas arranged at equal intervals, and the distance d between two adjacent N× end-fire linear array antennas is less than ?, where ? is the wavelength, and both M and N are integers greater than 1. By connecting linear type feed networks of the M paths of N× end-fire linear array antennas to M-path in-phase radio frequency signal transmitter and controlling the distance between two adjacent N× end-fire linear array antennas to be less than the effective wavelength, a higher gain and a higher half-power width can be realized, and the power consumption of the transmitter can be reduced.

Abstract: Disclosed is a high strength, high-temperature corrosion resistant martensitic stainless steel characterized by comprising the following chemical elements in percentages by mass: 0<C?0.05%, 0.1-0.2% of Si, 0.20-1.0% of Mn, 11.0-14.0% of Cr, 4.0-6.0% of Ni, 1.5-2.5% of Mo, 0.001%-0.10% of N, 0.03-0.2% of V, 0.01-0.1% of Nb, 0.01-0.04% of Al, and the balance being Fe and inevitable impurities. In addition, also disclosed are tubing and casing manufactured from the above-mentioned high strength, high-temperature corrosion resistant martensitic stainless steel, and a method for manufacturing the tubing and the casing. The high strength, high-temperature corrosion resistant martensitic stainless steel of the present disclosure has an excellent high temperature corrosion resistance to carbon dioxide and chloride ions, as well as excellent low-temperature impact toughness and a high-temperature strength degradation resistance.

Abstract: The present disclosure provides a low temperature resistant oil casing having high strength and high toughness, and the manufacturing method thereof, the chemical composition of the oil casing by mass of: C: 0.08-0.14%, Si: 0.1-0.4%, Mn: 0.6-1.3%, Cr: 0.5-1.5%, Mo: 0.2-0.5%, Ni: 0.2-0.5%, Nb: 0.02-0.05%, V: 0-0.1%, Al: 0.01-0.05%, Ca: 0.0005-0.005%, and the balance being Fe and unavoidable impurities. The method of manufacturing the oil casing includes: (1) smelting and continuous casting; (2) perforating and continuous rolling; (3) heat treatment, wherein an austenitizing temperature is controlled in the range of 900-930° C., and held for 30-60 min, followed by quenching, subsequently, tempering at temperature of 480-600° C., holding the temperature for 50-80 min; (4) hot sizing.

Abstract: A high-strength and high-toughness tube for perforating gun, having a formulation of chemical elements in percentage by mass as follows: C: 0.15%-0.22%, Si: 0.1%-0.4%, Mn: 0.5%-1%, Cr: 0.3%-0.7%, Mo: 0.3%-0.7%, Nb: 0.01%-0.04%, V: 0.1%-0.2%, Ti: 0.02%-0.05%, B: 0.0015%-0.005%, Al: 0.01%-0.05%, Ca: 0.001%-0.004%, N?0.008%, and the balance of Fe and other inevitable impurities. Accordingly, further disclosed is a method for manufacturing a high-strength and high-toughness tube for perforating gun. The high-strength and high-toughness tube for perforating gun of the present invention has high strength, good toughness and uniform circumferential strength, and is suitable for application in the field of petroleum exploration and exploitation.

Abstract: The present invention relates to malate salt of a multi-tyrosine kinase inhibitor. In particular, the present invention relates to crystalline forms of the malate salt of multi-tyrosine kinase inhibitor N-(3-fluoro-4-((2-(5-(((2-methoxyethyl)amino)methyl)pyridin-2-yl)thieno[3,2-b]pyridin-7-yl)oxy)phenyl)-N-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide (S)-2-hydroxysuccinate (1:1), pharmaceutical compositions comprising the crystalline form, processes for preparing the crystalline form and methods of use therefore.

Abstract: An aqueous dispersion comprising (i) multistage polymeric particles comprising structural units of a specific polymerizable surfactant and (ii) from zero to 5%, by weight based on the weight of the multistage polymeric particles, of a metal salt; and a coating composition comprising such aqueous dispersion and providing coating films with good tannin blocking, early block resistance and sandability properties.

Abstract: A bio-enhanced deodorization equipment includes a main body and a filler container in the main body. The filler container includes a wall and at least three perforated separator plates vertically arranged in the filler container. A plurality of spaces are formed by the at least three perforated separator plates, and a microbial filler and a carrier filler are accommodated in the spaces in an alternate manner.

Abstract: An process for the on-line quenching of seamless steel tube using residual heat, a method for manufacturing a seamless steel tube, and a seamless steel tube. The process for the on-line quenching of a seamless steel tube comprises the following steps: when the temperature of a tube is higher than Ar3, evenly spraying water along a circumferential direction of the tube so as to continuously cool the tube to be not higher than T° C., the cooling rate being controlled to be E1° C./s to E2° C./s to obtain a microstructure with martensite as the main composition, wherein T=Ms?95° C., Ms represents the martensitic phase transition temperature, E1=20×(0.5?C)+15×(3.2?Mn)?8×Cr?28×Mo?4×Ni?2800×B, and E2=96×(0.45?C)+12×(4.6?Mn), and the C, Mn, Cr, Ni, B and Mo in the equations each represents the mass percentages of corresponding elements in the seamless steel tube.

Abstract: The present invention relates to compounds of formula (I): or pharmaceutically acceptable salts thereof, wherein R1, R2, X, Y, and HET are as defined herein.

Abstract: A bio-enhanced deodorization equipment includes a main body and a filler container in the main body. The filler container includes a wall and at least three perforated separator plates vertically arranged in the filler container. A plurality of spaces are formed by the at least three perforated separator plates, and a microbial filler and a carrier filler are accommodated in the spaces in an alternate manner.