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138 results about "MOUNTING MEDIA" patented technology

A general purpose reagent is a chemical reagent that has general laboratory application, that is used to collect, prepare, and examine specimens from the human body for diagnostic histopathology, cytology, and hematology, and that is not labeled or otherwise intended for a specific diagnostic application. General purpose reagents include cytological preservatives, decalcifying reagents, fixatives and adhesives, tissue processing reagents, isotonic solutions, and pH buffers.

Array type microplasma generating device based on conductive coating

An array type microplasma generating device based on a conductive coating comprises the components of an insulating housing, an inlet pipe, a high-voltage power supply and a ground electrode. The insulating housing has a cylindrical structure. One end of the insulating housing is closed, and the other end is open. The closed end of the insulating housing is communicated with the inlet pipe. The middle part of the insulating housing is provided with a circular flow sharing plate in radical direction. The flow sharing plate is provided with flow sharing holes which are arranged uniformly. A dielectric board A and a dielectric board B are mounted below the flow sharing plate, and furthermore a space is kept between the dielectric board A and the dielectric board B. The surfaces of the dielectric board A and the dielectric board B are provided with jacks which correspond with one another in the vertical direction. Insulating dielectric pipes are inserted and fixed between the jacks of the two dielectric boards, wherein the jacks correspond with one another in the vertical direction. Each insulating dielectric pipe has a pipe structure with an upper opening and a lower opening. The upper surface of the dielectric board A is provided with a conductive coating A which is connected with the high-voltage power supply through a lead. The lower surface of the dielectric board B is provided with a conductive coating B which is connected with the ground electrode through a lead. The array type microplasma generating device has advantages of high uniformity, concise structure, low cost, etc.
Owner:DALIAN NATIONALITIES UNIVERSITY

Oil-soluble mounting medium for bottom water reservoir fracturing, and preparation method thereof

The invention discloses an oil-soluble mounting medium for bottom water reservoir fracturing, and belongs to the field of oilfield production. The mounting medium comprises, by mass, 5-10% of a framework material, 15-20% of rosin resin, 5-10% of dammar resin, 15-25% of petroleum resin, 8-12% of oil-soluble phenolic resin, 15-20% of terpene resin, 6-12% of petroleum asphalt, 2-4% of polyethylene, and the balance of a density regulator, wherein the framework material is ceramsite, and the density regulator is barite or calcium carbonate. The product has a high plugging strength, prevents bottomwater from coning, and can achieve water production control and oil production increase. A preparation method of the product comprises the following steps: mixing and crushing the rosin resin, dammarresin, petroleum resin, oil-soluble phenolic resin, terpene resin, petroleum asphalt and polyethylene wax, heating the obtained mixture until the mixture is completely melted, adding the framework material and the density regulator at a constant temperature, kneading the obtained mixture until the material is uniformly mixed, pouring the mixture into a container, naturally cooling the mixture to room temperature, and breaking, crushing and sieving the mixture. The preparation method has the advantages of simplicity and easily available raw materials.
Owner:PETROCHINA CO LTD

Auxiliary power device of straddle-type monorail train

The invention relates to an auxiliary power device of a straddle-type monorail train. The device comprises a main circuit module and a control circuit module, wherein the main circuit module is provided with a filter reactor, a pre-charge circuit, a support capacitor, a three-phase inversion power module and an output transformer; the pre-charge circuit is connected with the support capacitor through an EMI (Electro Magnetic Interference) filter; and the three-phase inversion power module is connected with the output transformer through a three-phase alternating current filter. By the technical scheme of the invention, the main circuit adopts a modular design and has a simple and reliable structure, wherein the power module adopts a heat pipe radiator for heat dissipation, and the heat dissipation power is high, which is beneficial to the improvement of the switching frequency of an IGBT (Insulated Gate Bipolar Translator), thus reducing the harmonic content of the alternating-current output wave shape, improving the power supply quality, and better protecting vehicle-mounted medium voltage equipment; the support capacitor adopts a high voltage film capacitor, thus the service life and the maintenance cycle of the product are long, and the reliability of the product is high; and an auxiliary control unit (ACU) adopts voltage and current double closed-loop control, the control quantity is converted from an alternating current quantity to a direct current quantity and is modulated through SVPWM (Space Vector Pulse Width Modulation), thus the voltage utilization rate is high and the harmonic content is small.
Owner:CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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