30 results about "Diffusion loss" patented technology

Provided is a method for driving a storage device which can improve reliability of data write-in in a storage device including a variable resistance element. When writing data, write-in pulses of different shapes are applied between two electrodes (21, 24) of the variable resistance element (2) a plurality of times. Since it is possible to eliminate diffusion loss of a conductive path by self heating (Jour heat) of the variable resistance element (2), the data holding operation after the write-in is stabilized.Moreover, it is possible to eliminate destruction of the variable resistance element (2) when performing a sufficient write-in operation. Accordingly, it is possible to stabilize the data write-in operation.

The invention discloses a pulse backflush deashing device for a filter. Filtering units are arranged on a pipe plate of the filter, and the pipe plate divides the filter into a clean gas cavity and a dusty gas cavity in a sealing manner. The pulse backflush deashing device comprises ejectors arranged at the upper parts of the filtering units, and backflush pipelines matched with the ejectors, wherein one end of each backflush pipeline is communicated with a backflush gas storage tank through a pulse backflush valve, and a direction-adjusting multi-hole jet nozzle according to the top part of each ejector is arranged at the other end of each backflush pipeline. As the pulse backflush deashing device adopts the direction-adjusting multi-hole jet nozzles with the jet directions being adjustable, the jet direction of backflush gas can be adjusted, the jet length can be extended, and a primary jet flow and a secondary jet flow are mixed uniformly by multiple high speed jet flows, so that the distribution statuses of backflush gas flows entering the ejectors can be improved, the diffusion loss is reduced, the energy transmission efficiency can be improved, and the deficiencies, such as non-uniformity of pulse backflush, as well as gas flow eccentricity and filter pipe vibration that are brought by the existing jet nozzles, are overcome.

The invention relates to an integrated multistage two-dimensional optical MEMS optical switch and a method for achieving optical path switching. The optical switch has N input / output ports, wherein Nis integer multiples of 2, micro-mirrors in the optical switch are divided into N stages and are arranged from left to right in a sequence from the first stage to the N stage; two micro-mirrors ofthe same stage has a distance p therebetween, two micro-mirrors of two adjacent stages has a distance p / 2 therebetween, each odd-numbered stage has N / 2 two-side mirrors, each even-numbered stage hasN / (2-1) two-side mirrors; the two-side mirror has an open and a close states; and a single-side mirror in open state is fixed above the first micro-mirror by a distance p and below the N / (2-1) micro-mirror by a distance p in the micro-mirrors of each even-numbered stage. The method can achieve output at different ports by setting the state of the double-side mirrors in the optical switch. Theinvention has the advantages of enhanced repeatability from port to port and reducing optical power loss and beam diffusion loss.

The invention discloses a base station electromagnetic radiation evaluation method in a diffraction environment. The method obtains the diffraction parameters according to the horizontal distance of the obstacle from the base station, the horizontal distance of the obstacle from the evaluation point, and the relative height of the obstacle relative to the base station , so as to obtain the diffraction loss, combined with the actual transmit power of the antenna port obtained by the downlink ratio of the base station, the network load ratio of the base station system, the single-channel transmit power of the base station, the efficiency of the smart antenna, the number of base station channels and the number of carriers of the base station, and thus obtain the evaluation point The electromagnetic radiation intensity of the base station. The evaluation method proposed by the invention has great reference value for the evaluation of base station electromagnetic radiation under the diffraction environment.

An acrylate functional monomer with anti-inflammatory effect and a preparation method thereof, comprising dissolving methylprednisolone in an organic solvent, adding an acid-binding agent, adding dropwise a dilute solution replacing acryloyl chloride, cooling the mixture in an ice-water bath and at room temperature. Continue the reaction, after the reaction is over, filter the reaction solution, add deionized water to the filtrate, precipitate solid precipitation, filter, wash the filter cake with deionized water, and dry to obtain the acrylate functional monomer, the prepared acrylate functional monomer Free radical copolymerization with other olefinic monomers can prepare polymers with anti-inflammatory functions, and construct polymer nanomicelles with a cell membrane-like structure. The polymer micelles are not suitable for diffusion of the anti-inflammatory drug methylprednisolone in practical applications. At the same time, its imitation cell membrane structure is conducive to the uptake of cells, and it can evenly release methylprednisolone through the hydrolysis of ester bonds, so that it can be used efficiently to reduce the dosage and avoid complications in long-term use. occurrence of the disease.

The invention relates to a white LED (Light-Emitting Diode) light source of a transparent ceramic fluorescent tube packaged with blue chips on an inner wall thereof. The white LED light source is composed of the transparent ceramic fluorescent tube (1), a high transmittance packaging shell (2), an electrode (3), a cooling fin (4) and blue light-emitting bars (5), wherein the blue light-emitting bars (5) are adhered to the inner wall of the transparent ceramic fluorescent tube (1); the transparent ceramic fluorescent tube (1) is located right on the cooling fin (4) and placed in the high transmittance packaging shell (2); the high transmittance packaging shell (2) is inverselybuckled on the upper end face of the cooling fin (4); the electrode (3) is located under the cooling fin (4); one end of the electrode (3) is connected with the cooling fin (4) via a connection line and the other end of the electrode (3) is connection with an external power source. As the inner wall adhesion technology is adopted, the white LED light source is efficient and concise, the light emission is uniform; as the transparent ceramic fluorescent tube per se has excellent heat-conducting property and a big cavity volume is reserved between the transparent ceramic fluorescent tube and the high transmittance packaging shell, the heat dissipation effect is greatly improved. Since the remote excitation technology is adopted, the light emission is more uniform, the light diffusion loss is reduced and the light-emitting efficiency is improved.

The invention relates to a gas mass life cycle prediction method and a gas concentration prediction method based on the same. The gas mass life cycle prediction method comprises the following steps of1) dividing a gas mass life cycle into the inoculation, the steady-state drifting and the diffusion loss according to the migration rule of a gas mass in a roadway and the change of a gas concentration attenuation rate during the migration process of the gas mass; 2) collecting a group of gas concentration data in the roadway; (3) establishing a GM (1, 1) prediction model, compiling an MATLAB program, and inputting the gas concentration data and the number of the subsequent points needing to predict the gas concentration value in the MATLAB program; 4) running a program to obtain a predictedgas concentration value, and calculating a corresponding gas concentration attenuation rate; 5) correspondingly obtaining the stage of the life cycle of the gas mass according to the change conditionof the gas concentration attenuation rate, and 6) judging whether the high-concentration gas mass can be safely diffused or discharged out of the roadway, and if not, taking the corresponding measuresin advance to prevent the accidents. The method can effectively prevent the underground disasters.