31results about How to "Efficient spreading" patented technology

A clamp (10) having at least first and second elongate clamping portions (2, 4) adapted to be placed on opposite sides of the hollow anatomical structure (40). The first and second elongate clamping portions (2, 4) respectively include ends coupled together with respective resilient urging members (6, 8) configured to urge at least one of the first and second elongate clamping portions (2, 4) toward the other of the first and second elongate clamping portions (2, 4) from an open position into a clamping position to occlude the hollow anatomical structure (40). The clamp (10) is shaped annularly such that it may surround the hollow anatomical structure (40) in the open position and reorient into a flattened shape in the clamping position to occlude the hollow interior of the hollow anatomical structure (40). Apparatus of the invention further include clamp delivery and actuation devices (80, 200) adapted to deploy the clamp (10).

A heat spreader includes thin films opposite to each other; cooling liquid filling an internal space between the thin films; and a vibration generating means for vibrating the liquid. Accordingly, the heat spreader has excellent heat spread performance compared to a conventional heat spreader, so can have an ultra slim type structure. Also, the heat spreader has excellent heat spread performance regardless of a direction of gravity, and a space between the thin films is sealed in a state of an atmospheric pressure, to maintain the improved heat spread performance for a long time.

Depletion drain-extended MOS transistor devices and fabrication methods for making the same are provided, in which a compensated channel region is provided with p and n type dopants to facilitate depletion operation at Vgs=0, and an adjust region is implanted in the substrate proximate the channel side end of the thick gate dielectric structure for improved breakdown voltage rating. The compensated channel region is formed by overlapping implants for an n-well and a p-well, and the adjust region is formed using a Vt adjust implant with a mask exposing the adjust region.

A rotor includes a laminated core, a plurality of magnets, and a resin portion. The laminated core includes a plurality of outer core portions arranged in a circumferential direction. The plurality of outer core portions and the plurality of magnets are alternately arranged in the circumferential direction. In addition, the outer core portion includes a through-hole that penetrates in an axial direction. The resin portion includes a columnar portion that is disposed inside the through-hole. Accordingly, the rigidity of the resin portion is enhanced. In addition, the resin portion includes a gate mark portion. At least a portion of the gate mark portion is positioned farther radially inward than the through-hole.

The invention discloses an oxidized coal slime flotation collecting agent, a preparation method and a flotation method, belongs to the technical field of coal slime flotation, and solves the problemsof high reagent consumption and flotation cost and low separation efficiency in the oxidized coal slime flotation. The collecting agent comprises C10-C22 hydrocarbon oil and an accelerating agent; theaccelerating agent comprises tetrehydrofuran and C7-C9 aromatic aldehyde; and the mass percentages of the components are as follows: 75-80% of C10-C22 hydrocarbon oil, 5-12% of tetrehydrofuran and 8-20% of C7-C9 aromatic aldehyde. The preparation method is to obtain the oxidized coal slime flotation collecting agent through uniform mixing of the C10-C22 hydrocarbon oil, the tetrehydrofuran and the C7-C9 aromatic aldehyde. The floatation method is to obtain flotation clean coals and flotation tailing coals after preparation of oxidized coal slime as flotation pulp, adding of the collecting agent and a foaming agent in the floatation pulp for stirring and flotation separation. The oxidized coal slime flotation collecting agent, the preparation method and the flotation method are used for the oxidized coal slime flotation.

The invention discloses an aerial seeding bioremediation method for a coal mining subsidence area. The aerial seeding bioremediation method for the coal mining subsidence area comprises the following steps: acquiring a topographic map of the coal mining subsidence area; performing gradient grading on the topographic map; determining an aerial seeding operation seeding coefficient according to a gradient grading result and the ground coverage rate of the coal mining subsidence area; determining height adjustment parameters in the aerial seeding process of a unmanned aerial vehicle; and performing aerial seeding operation by adopting the unmanned aerial vehicle according to the ground gradient grading result, the aerial seeding operation seeding coefficient and the height adjustment parameters. The slope grading aerial seeding technical standard determined by the aerial seeding bioremediation method for the coal mining subsidence area can adapt to a complex terrain of the coal mining subsidence area, and the safety of the unmanned aerial vehicle is guaranteed; the sowing amount is set in a grading mode according to the ground coverage rate, so that efficient and accurate sowing can be realized; the determined height adjustment parameters can ensure that the unmanned aerial vehicle always keeps an approximately equal vertical distance from the ground within a unit operation range; the unmanned aerial vehicle performs aerial seeding remote control operation, so that the influence of personnel entering the coal mining subsidence area on the environment is avoided, and the labor cost can be saved.

The invention discloses a collecting agent for coal slime flotation of oxidized coal, a preparation method of the collecting agent and a flotation method, and belongs to the technical field of coal slime flotation. The problems of high reagent consumption, high flotation cost and low separation efficiency of coal slime flotation of oxidized coal. The collecting agent comprises C<10>-C<22> hydrocarbon oil and an accelerator. The accelerator comprises ethylene oxide and C<7>-C<9> aromatic ether. The collecting agent is prepared from the raw materials by mass: 75%-80% of C<10>-C<22> hydrocarbon oil, 5%-12% of ethylene oxide and 8%-20% of C7-C9 aromatic ether. The preparation method comprises the following steps that the C<10>-C<22> hydrocarbon oil, the ethylene oxide and the C<7>-C<9> aromatic ether are uniformly mixed to obtain the collecting agent for coal slime flotation of oxidized coal. The flotation method comprises the following steps that coal slime flotation of oxidized coal is prepared into flotation pulp, the collecting agent and a foaming agent are sequentially added into the flotation pulp for stirring, and then flotation separation is carried out to obtain flotation clean coal and flotation tail coal. The collecting agent for coal slime flotation of oxidized coal, the preparation method of the collecting agent and the flotation method are used for coal slime flotation of oxidized coal.