37 results about "Double negative" patented technology

The invention discloses a hydrogen-nickel battery negative electrode sheet and a method for manufacturing a hydrogen-nickel battery using the same. The negative electrode sheet is a double negative electrode sheet, and the manufacturing method comprises welding a single negative electrode short sheet at the end of a single negative electrode long sheet through a negative electrode connection substrate. Double negative electrode sheet, first weld a small piece of protective film with a width larger than the width of the negative electrode connection substrate on the diaphragm corresponding to the connection seam of the double negative electrode sheet, and then place the diaphragm welded with the protective film between the positive and negative electrode sheets, and then place the The double negative plate, diaphragm, and positive plate are rolled into a cylindrical shape and loaded into the battery case, and finally the nickel-hydrogen battery is assembled by injecting electrolyte, installing a cap and sealing ring. It can effectively control and manufacture pole pieces with different thicknesses and different amounts of negative electrode active materials, improve the utilization rate of negative electrode active materials and the performance of the battery, correspondingly reduce the thickness of double negative electrode pieces and occupy the volume of the shell, and reduce the battery life. The manufacturing cost and assembly difficulty significantly improve the manufacturing efficiency of the battery, and are especially beneficial to the manufacture of high-capacity batteries.

The invention discloses a tetracyclic compound capable of promoting in-vitro proliferation of double-negative T cells. The tetracyclic compound is IMC-00239, and the molecular formula of the tetracyclic compound is shown in the description. The invention relates to the tetracyclic compound which can be used for promoting in-vitro proliferation of the CD3<+> / CD4<-> / CD8<->double-negative T (DN T) cells and is selected from a compound library according to a high-throughput screening method, and provides a pharmaceutically acceptable salt and a prodrug of the tetracyclic compound. The compound is a restrainer of a Wnt signal channel, and can induce degradation of beta-Catenin of the DN T cells, shorten cell cycle and promote karyokinesis when being used in in-vitro experiments. The compound can effectively promote the construction of a CAR-DN-T in-vitro proliferation system, and help implementation of a CAR-DN-T cell factory.

The invention relates to a bi-directional constant current source device based on dual negative feedback control, and belongs to the technical field of electronic technique. The bi-directional constant current source device structurally comprises a front panel (10), a current setting module (1), an output control module (5), a power output module (6) and a first feedback module (7), and is characterized by further structurally comprising a subtracter module (2), a PID module (3), a limited current setting module (4), a second feedback module (8) and a display driver module (9). The bi-directional constant current source device adopts the dual negative feedback structure, thereby having the characteristics of being high in output current stability, high in safety, wide in range of usage occasions and the like, the limited current setting function is achieved, and output current dual-directional regulation can be further realized.

Methods for the treatment of cancer using double negative (DN) T cells are described. The DNTs may be used for the treatment of chemotherapy-resistant cancers such as recurring or relapsing acute myeloid leukemia (AML). The use of allogenic DNTs, such as those derived from healthy donors, that do not exhibit toxicity towards normal host tissues and the complications associated with graft-versus-host-disease, is also described.

The invention relates to disposable sanitary production line equipment, in particular to an adhesive tape cutter device with inserts interchangeable. Two groups of negative pressure holes are formed in a bottom roller and are symmetrical relative to the bottom roller, a locating face is formed on the part, between the two groups of negative pressure holes, of the bottom roller, a group of protruding locating pillars are arranged on the locating face, the negative pressure holes are communicated with a negative pressure plate, a negative pressure box is provided with two negative pressure openings, the negative pressure openings are connected with the negative pressure plate through negative pressure pipes, and a cutter system and a cam bonding system correspond to one group of negative pressure holes respectively. According to the structure of the adhesive tape cutter device, the bottom roller is provided with double negative-pressure suction structures, the locating pillars are arranged between the two groups of negative pressure holes, in the material conveying process, even if the negative pressure holes are not covered, materials cannot be subjected to sliding or displacement on the bottom roller under the action of the locating pillars, the areas of the negative pressure holes are decreased, and power of a vortex air pump can be reduced.