Abstract: The present application provides a continuous preparation system and method for vinylidene chloride. In the present application, by coupling two stages of high gravity reactors, the product vinylidene chloride and water vapor are distilled from a reaction system in form of an azeotrope by adopting a water vapor steam stripping method, and the product obtained using the method has high purity. In addition, by combining steam stripping and high gravity, trichloroethane and alkali solution are rapidly mixed for mass transfer, and the product vinylidene chloride is rapidly distilled from the reaction system in form of the azeotrope (based on rapid diffusion of water vapor), such that the reaction proceeds continuously towards the direction of producing vinylidene chloride, thus significantly improving the conversion rate.

Abstract: The present disclosure provides a method for refining styrene by using falling film reboilers and heat pump technology to provide a heat source required by a separation column. According to the method, high-concentration gas-phase ethylbenzene separated from a top of a low pressure ethylbenzene/styrene column is directly pressurized through a compressor, or a heat pump working medium is gasified using the high-concentration gas-phase ethylbenzene separated from the top of the low pressure ethylbenzene/styrene column, and the gasified heat pump working medium is pressurized. The directly pressurized high-concentration gas-phase ethylbenzene or the indirectly gasified and pressurized high-concentration gas-phase ethylbenzene is fed into the falling film reboiler with low heat transfer temperature difference requirement to serve as a heat source of a pre-separation column and/or a styrene product column in a styrene separation process.

Abstract: A fresh air integrated machine includes a housing, a fresh air channel, a circulating air channel, an air mixing cavity, a first heat exchanger, and a second heat exchanger. The fresh air channel is configured to introduce outdoor air into the air mixing cavity. The circulating air channel is configured to introduce indoor air into the air mixing cavity. The first heat exchanger is disposed in the fresh air channel and configured to adjust humidity and temperature of air in the fresh air channel. The second heat exchanger is disposed in the circulating air channel and configured to adjust humidity and temperature of air in the circulating air channel.

Abstract: A walking power control system for wolfberry picking, including a frame, a turntable, rotating rods, first gears, second gear, gear racks, supporting rods, hydraulic motors, a front traveling wheel, a left traveling wheel and a right traveling wheel. Hydraulic motors rotate to drives three traveling wheels to rotate, thereby driving the frame to move, when it is necessary to turn, a turntable is rotated, the turntable rotates to drive two first gears to rotate, and the two first gears rotate to drive the supporting rods to rotate, thereby driving the left traveling wheel and the right traveling wheel to rotate, so that the traveling direction of the frame is changed.

Abstract: The present disclosure relates to the technical field of liquid cooling media. Disclosed are a composition, a liquid cooling agent and applications thereof, and an immersion cooling system. The composition is a perfluoropolyether compound having a structural general formula A-(RCFO)n—(CF2O)m—(CF2)z—B, or a combination of the perfluoropolyether compound and perfluoropolyether diol having a structural general formula HO—CH2—(CF2)q—(RCFO)n—(CF2O)m—(CF2)z—CH2OH. Groups (RCFO) and (CF2O) are randomly distributed. A is a group —F, —CF3, CF3CF2—, CF3—O—, or CF3CF2—O—; B is a group —CF3 or —CF2CF3; RCF is a group —CF2CF2—, —CF2CF2CF2—, or —CF(CF3)CF2—; z is an integer between 0 and 2; n and m are both integers greater than 0; n+m=2-30; n/m=1-30; q is an integer greater than 0. The present disclosure solves the existing problem of poor compatibility between a component of the liquid cooling agent and an electronic device material.

Abstract: A heterojunction solar cell and a preparation method therefor. The heterojunction solar cell comprises: a semiconductor substrate layer; and a back composite transparent conductive film located on one side of the semiconductor substrate layer. The back surface composite transparent conductive film comprises: a first back surface transparent conductive film; and a second back transparent conductive film located on the side surface of the first back transparent conductive film facing away from the semiconductor substrate layer. Both the first back transparent conductive film and the second back transparent conductive film are doped with group III heavy atoms, and the concentration of the group III heavy atoms in the second back transparent conductive film is less than that of the group III heavy atoms in the first back transparent conductive film.

Abstract: The present disclosure provides a method for refining styrene by using falling film reboilers and heat pump technology to provide a heat source required by a separation column. According to the method, based on an existing energy-saving technology of coupled high and low pressure ethylbenzene/styrene separation columns, high-concentration gas-phase ethylbenzene separated from a top of a low pressure ethylbenzene/styrene column is directly pressurized through a compressor, or a heat pump working medium is gasified using the high-concentration gas-phase ethylbenzene separated from the top of the low pressure ethylbenzene/styrene column, and the gasified heat pump working medium is pressurized.

Abstract: An integrated anchoring structure of basalt fiber reinforced plastic (BFRP) bars for a reservoir bank slope includes: a plurality of BFRP anchoring bars, where each of the BFRP anchoring bars includes a plurality of BFRP bars bonded to one another, a lower steel casing pipe, an upper steel casing pipe and a steel strand bonded to an upper portion of the upper steel casing pipe and aligned with the BFRP bars, and a grating array temperature sensing optical cable, a grating array stress sensing optical cable and a grating array vibration sensing optical cable are bonded in each of the BFRP bars; a plurality of shear-resistant bricks distributed on structural planes; a pouring base arranged at a bottom of the anchoring borehole; and an anchoring section arranged at an upper portion of the pouring base.

Abstract: An economic and reliable fiber hermetic sealing for small devices includes partially stripped optical fibers optically aligned, fixed at one end aligned with an optical source, and a cylindrical solder glass with one or multiple through holes which diameters are greater than those of the stripped fibers. A glass solder preform is contained in a ferrule structure which diameter is bigger than that of said solder glass outer diameter. The ferrule wall around the solder glass is lower than said solder glass height. The solder glass preform sits on a stepped hole with 25-75 degrees chamfered. The glass solder melts at high temperatures and flow into small hole section where the fiber is hermetically sealed and retained. An epoxy with a good adhesion to fiber coating and fiber glass is filled in the cavity blocked by molten solder glass.

Abstract: An external cavity tunable laser includes a gain median module to generate a broadband optical spectrum covering a predetermined wavelength range; a collimate lens turning a diverging beam into a collimated beam; a pair of etalons to tune frequency; an actuator to adjust an external cavity optical pathlength; a bandpass filter to block one or more frequencies outside the predetermined wavelength range; a beam splitter to split a percentage of the beam to a photodetector; a reflection mirror for feedback to gain median waveguide; an isolator for preventing reflecting light back to the external cavity; and a hermetically sealed housing less than 0.15 cubic centimeters.

Abstract: The embodiments of the present disclosure provide a plug, an interface device and an identification method thereof. The plug includes at least one insulating pin row including a plurality of insulating pins, a conductive pin which is stretchable and retractable along an axis direction is provided on at least one side of a central line of each of the at least one insulating pin row, and the conductive pin is arranged between two adjacent insulating pins of the plurality of insulating pins.

Abstract: An application, in preparation of medicine for preventing or treating a disease related to a tyrosine kinase, of a compound as represented by formula I, or a pharmaceutically acceptable salt, an ester, a solvate, a prodrug, an active metabolite, a crystal, a stereoisomer, a tautomer, or a geometric isomer thereof, or a pharmaceutical composition comprising the compound as represented by formula I or the pharmaceutically acceptable salt, ester, solvate, prodrug, active metabolite, crystal, stereoisomer, tautomer, or geometric isomer thereof.

Abstract: The embodiments of the present disclosure provide a plug, an interface device and an identification method thereof. The plug includes at least one insulating pin row including a plurality of insulating pins, a conductive pin which is stretchable and retractable along an axis direction is provided on at least one side of a central line of each of the at least one insulating pin row, and the conductive pin is arranged between two adjacent insulating pins of the plurality of insulating pins.

Abstract: The present disclosure relates to the field of riding equipment, and particularly to a headband and a multifunctional helmet. The headband comprises a strap configured to bind a head, an adjustment assembly that adjusts the tightness of the strap, and an electronic device that endows the headband with intelligent properties. The strap is connected to the adjustment assembly, and the electronic device is disposed within the adjustment assembly and connected to the adjustment assembly. The headband is an accessory of the helmet, electronic devices are combined with the headband such that the headband has electronic functions associated therewith, expanding the use range of the headband.

Abstract: Optical transceivers with optical packaging designs to reduce inside transceiver components, simplify the fabrication, and improve the optical alignment and other optical transceiver characteristics.

Abstract: A smart zipper includes: a fastener stringer including two rows of zipper teeth and a joint at one end of the two rows of zipper teeth for fixedly connecting the one end of the two rows of zipper teeth; a slider, including two lateral limiting portions, the two lateral limiting portions having conductive properties, and the two lateral limiting portions respectively electrically contacting outer edges of the two rows of zipper teeth; and a resistance measuring chip electrically connected to the two lateral limiting portions of the slider respectively, wherein the resistance measuring chip, the slider and the fastener stringer form a conductive loop. The resistance measuring chip is used for measuring the resistance value of the conductive loop, and outputting a measurement signal. The smart zipper provided by the present disclosure can detect its own closed state. Therefore, the user can know the closed state of the zipper in real time to avoid embarrassment or property loss due to unclosed zipper.