40results about How to "Realize union" patented technology

The invention provides a heat-pump water heater based on a solar energy auxiliary air source, relating to a high-efficiency water heater which organically combines solar energy and an air source heat pump, uses solar energy as an auxiliary heat source and also can use air as a heat source of a heat pump system simultaneously. A refrigeration circulation loop comprises a compressor (1), a first heat exchanger (2), a liquid accumulator (3), a filter (4), a first electronic expansion valve (5), a fin tubular heat exchanger (6), a second electronic expansion valve (7), a second heat exchanger (8), a check valve (9), a hot air electromagnetic valve (10) and a defrost electronic expansion valve (11); a solar energy auxiliary heat source loop comprises a solar energy hear collector (19), a second heat exchanger (2), a second water pump (21), a fifth electromagnetic valve (18), a sixth electromagnetic valve (20); and a solar energy direct-heating water loop comprises a hot water accumulator (12), a first water pump (13), a first heat exchanger (2), a solar energy heat collector (19), a first electromagnetic valve (14), a second electromagnetic valve (15), a third electromagnetic valve (16) and a fourth electromagnetic valve (17).

The invention provides a cell Internet speed acquisition method, device, cell Internet speed calculation method and device which are used for acquiring Internet speeds of individual cells through dialing test so as to estimate the Internet speed of any cell. The cell Internet speed acquisition method includes the following steps that: Internet speeds of a plurality of cells in a region are acquired; performance parameters of circuit switching (CS) domains and packet switching (PS) domains corresponding to the above Internet speeds are acquired; and mathematical models of the above Internet speeds and the performance parameters are constructed, wherein the mathematical models are used for acquiring the Internet speed of any cell in the region. With the technical scheme of the invention adopted, relevant mathematical models can be constructed through performing dialing test on the individual cells, and therefore, the Internet speed of any cell in the region can be estimated according to the mathematical models and the acquired performance parameters.

The invention is suitable for the medicinal technical field and provides a charge conversion type nanometer drug carrier and a preparation method thereof. The charge conversion type nanometer drug carrier comprises an inner core and an outer core, wherein the inner core is served as a carrier main body; the outer core is served as a carrier lock for performing charge conversion on the carrier main body; the inner core and the outer core are combined under the effects of positive and negative charges; the carrier main body is made from the target peptide modified polyethylene glycol-hydrophobic modified chitosan with positive charges; the carrier lock is made from polylysine with the side chain modified with 2,3-dimethyl maleic acid. The charge conversion type nanometer drug carrier provided by the invention has a dual-charge conversion function; the negative charges are loaded on the surface of the charge conversion type nanometer drug carrier; under a weak acid condition, the carrier lock is opened, the carrier charges are reversed, the negative charges are reversed into positive charges, the target peptide is exposed on the micellar surface, a targeting function is achieved and the blood brain barrier is overcome.

The invention discloses an angle milling head having a dual-lead worm and gear transmission clearance removing device in order to improve the processing precision of the angle milling head. The angle milling head comprises an angle milling head base and a milling head body, wherein the milling head body is mounted on the angle milling head base through a guide drive mechanism and can perform bidirectional swing around a reference axis under the holding of the guide drive mechanism; the dual-lead worm and gear transmission clearance removing device is adopted as the guide drive mechanism; a dual-lead worm is located in a casing through a front end rotation support assembly and a rear end rotation support assembly; the front end rotation support assembly comprises a front end sleeve part; an inner hole wall of the front end sleeve part forms a front end guide hole and a front end thread hole from inside to outside; a front end bearing closely matched with the front end of the dual-lead worm is mounted in the front end guide hole and is in axial sliding fit with the front end guide hole; and the end face of an outer circle on the external side of the front end bearing is axially pressed from outside to inside by a front end adjusting screw adaptively connected with the front end thread hole.

A reducing / pH-sensitive polysaccharide-based nano-prodrug co-loaded with doxorubicin and platinum-based drugs and its preparation method and application. First, the 3,3'-dithiodipropionylhydrazide bond is bonded to Connected to the carboxyl group of the polysaccharide polymer to obtain a hydrazide polysaccharide polymer, then connect doxorubicin to the hydrazide polysaccharide polymer through a hydrazone bond, form nanoparticles through self-assembly, and finally load the platinum drug on the On the nanoparticles, a reduction / pH-sensitive polysaccharide-based nanoprodrug co-loaded with doxorubicin and platinum drugs was formed. The nano-prodrug has a core-shell structure, and its particle size can be adjusted in the range of 100-200nm. It can respond to the dual stimulation of glutathione and pH to achieve rapid drug release, and can be used to kill tumor cells. The preparation method of the nano-prodrug of the present invention has the characteristics of easy-to-obtain raw materials, mild process conditions, simple purification process, and easy large-scale preparation, and has application prospects in the treatment of various tumors such as breast cancer and liver cancer.

The invention discloses a wall plate of a test section of a plane cascade with adjustable length. The wall plate of the plane cascade test section includes a rotating plate, a length adjuster, a guide rail pair, and a translation plate; the rotating plate is a straight plate, and the front end of the rotating plate is a fixed end, which is fixed at the nozzle outlet through a The rear end of the plate is a free end; guide rails are installed on the upper surface of the rotating plate. The translation plate is another straight plate, the upper surface of the translation plate is fixed with a slide block, and the slide block is mounted on the guide rail. The fixed end of the length adjuster is installed on the upper surface of the rotating plate, and the moving end of the length adjuster is connected with the rear end of the translation plate through a pin shaft. The length adjuster drives the slide block on the translation plate to move along the guide rail to realize the forward and backward movement of the translation plate. The panel of the planar cascade test section can adjust the length of the panel of the test section according to the test conditions of the cascade, with convenient operation, simple positioning, and high accuracy of length adjustment, which can save test preparation time and improve test efficiency.

The invention discloses a height-adjustable plane cascade test section. The plane cascade test section is a square body, including a shell, two test section disks installed side by side on the left and right in the shell, two wall plate assemblies installed up and down in the shell, and two sets of corresponding angle adjustments. The inner wall of the two test sections, the space between the two upper and lower wall plate assemblies and the two upper and lower length compensation plates is the test section; the space between the outer wall of the two test sections and the shell The space is the living room of the test section. The moving end of the angle adjuster drives the two upper and lower wall plate assemblies to rotate around the pin shaft to adjust the height and angle of the upper and lower wall plate assemblies of the test section. The planar cascade test section has comprehensive functions, convenient operation, simple positioning and high precision, which can save test preparation time and improve test efficiency.