171results about How to "Not expensive" patented technology

The present invention relates to a packet switch and a packet switching method. An example embodiment of the present invention comprises at least three network ports, at least one instrument port, a mux-switch, a packet switch fabric, and an address table. The embodiment updates the address table to include the source address of each ingress packet of each network port and associate the source address with that network port. The mux-switch routes the ingress packet traffic of each network port according to the identity of the network port so that at least a copy of the packet traffic of one of the network ports is routed to an instrument port. The packet switch fabric routes the packets from the instrument ports to the network ports according the destination address of the packet and the identity of the network port that is associated with the destination address as recorded in the address table.

A method non-dispersive infrared (NDIR) gas analysis, which can be carried out by a gas analyser comprising a cell (10) containing of gas, a sender (30) of IR waves and at least a receiver (40) of such waves. The transmission of IR waves and/or the reception of IR waves after the passage of the gas occur directly in the cell (10) same wherein the gas is fed. The analyser has a body (11) defining the cell (10), a sender (30) of IR waves and at least a receiver (40) of such waves, that are located opposite to each other with respect to the cell (10). The IR sender (30) and the receiver (40) are both arranged in the cell (10) at its end (13,14). The body (11) has inlet (15) and outlet (16) channels for the gas and a cavity (17), which can be metal coated inside and that defines the optical path (80) for the IR waves. The body (11) is directly mounted on a printed circuit board (100) that has the electronic control unit for transmission of the IR waves and for analysis of the signals coming from the receiver (40).

The invention relates to a preparation method of filter tip fibers for selectively adsorbing benzopyrene and phenol. The preparation method comprises the steps of firstly, performing oxidation treatment on graphite to obtain graphene oxide, performing ultrasonic treatment on the graphene oxide to prepare an aqueous solution or preparing a mixed aqueous solution from the graphene oxide with chitosan, next, dipping the fibers into the aqueous solution of the graphene oxide or in the mixed solution of the graphene oxide and the aqueous solution of the chitosan, drying in vacuum for 6 hours at 80 DEG C, and finally, obtaining the filter tip fibers. According to the preparation method, the chitosan is evenly attached on the surface of the fibers and a remarkable effect of reducing phenol harmful substances can be achieved. Meanwhile, due to strong Pi-Pi interaction between the graphene and the benzopyrene, the graphene modified filter tip is capable of effectively retaining the strong carcinogenic substance benzopyrene in the smoke of cigarette. The preparation method is simple, relatively high in efficiency and low in environmental pollution; meanwhile, the fibers can be modified after the graphene and the chitosan are compounded, and the synergistic effect of the graphene and the chitosan in removing arene harmful substances can be developed; as a result, the preparation method has favorable application prospect.

To produce filled thermoplastic polymers starting from a waste thermoplastic base material, the base thermoplastic material is fed into a container (1) provided with a device for mixing and stirring (2,3) in which the base thermoplastic material is softened, the required filler is fed into said device and stirring is continued to thoroughly blend filler and softened material, subsequently collecting the softened and filled material from said container and subjecting it to an extrusion or other densification step.

A system of counter-rotating propellers for an aircraft turbine engine including a first and a second propeller, each including a stalling control system for the blades, a rotating actuating mechanism for sliding an element to move the angle of attack of the blades, and a disengaging mechanism for rigidly fixing in rotation the rotating actuating mechanism. The system is designed so that when the disengaging mechanism is engaged, a relative rotation speed is created between the elements and the associated rotating actuating mechanism thereof, bringing the blades into a neutral position thereof for feathering.

The plume abated cooling tower having a heat exchanger in which an aqueous fluid is cooled by an air flow. The heat exchanger has first channels in which air and fluid counterflow, second channels in which air flows, and a means for avoiding the passage of fluid into said second channels, said second channels having a heat conductive surface contacting a plurality of first channels.

Disclosed is a low noise, non-isolated DC-DC converter for providing a non-inverted (i.e., the same polarity as an input voltage) output voltage of any desired voltage by stepping-up/down the input voltage. It comprises an input coil L1, an input capacitor C1 and a second intermediate coil Lm2 connected in series between both ends of the input voltage source, an output coil L2, an output capacitor C2 and a first intermediate coil Lm1 connected in series between both ends of a load Ro, a switching device S connected between a node a of the L1 and the C1 and a node b of the C2 and the Lm1, and a diode D connected between a node d of the C1 and the Lm2 and a node c of the C2 and the L2.

The present invention provides a distributed mode processor with a three-dimensional memory array. The distributed mode processor comprises multiple memory processing units, wherein each unit has a mode processing circuit and at least a 3D memory array that stores at least one mode. The 3D memory array is stacked above the mode processing circuit. By means of large-scale parallel computation, the distributed mode processor can perform rapid mode processing on large mode libraries.

The invention belongs to the field of luminescent materials, and relates to a rare earth metal organic framework material and a synthesis method thereof. The rare earth metal organic framework material is constructed with deprotoned 2,4,6-tris(4-carboxyphenyl)-1,3,5-triazine as ligands, with rare earth metal ions as luminescent centers by pi-pi interaction of the ligands or C-H-pi interaction of the ligands and a solvent. The distance between the centers of aromatic rings corresponding to the pi-pi interaction of the ligands is 5 Angstroms, the interaction of the ligand molecules is enhanced,the rigidity of a material skeleton is increased, the loss of energy on the skeleton is reduced, the energy transfer from the ligands to the rare earth metals is also enhanced, the energy utilizationefficiency is greatly enhanced, and thus high quantum yield is obtained. The luminescent metal organic frame material has high energy utilization rate, and the quantum yield of the luminescent metal organic frame material is increased from less than 60% to 99.9% compared with that of a conventional rare earth metal organic frame material.