37results about How to "Achieve excitation" patented technology

A dewatered sludge solidifying agent, a preparation method and a use method, belonging to the technical field of environmental engineering, the phosphate rock, carbide slag, tailings slag and marble slag in the dewatered sludge solidifying agent are (1-3) by mass percentage: (1 ~3):(1~3):(1~3), the preparation method comprises: washing, drying, crushing and ball milling the phosphate rock, calcium carbide slag, tailings slag and marble slag respectively, and mixing them in proportion uniform. The method of using the dewatered sludge solidifying agent includes: mixing the dewatered sludge and the added dewatered sludge solidifying agent in proportion to achieve solidification. The compressive strength of the cured dewatered sludge can reach 78KPa after 3 days of curing under normal temperature and pressure, and the pH of the leachate is between 5 and 10. The dewatered sludge solidifying agent of the present invention uses solid waste as a raw material, has wide sources of raw materials and low cost, and utilizes the chemical properties of the solid waste itself and the activity excitation between them to realize the solidification and stabilization of the dewatered sludge.

The invention discloses a lipase nano-sized polymer biocatalyst particle and a preparation method thereof. The method comprises the following core steps: chemically modifying the surface of a lipase with glycidyl methacrylate which is used as a hydrophobic reagent, introducing a C-C double-bond group, and then, without needing to separate intermediates, directly adding a vinyl monomer containing C-C double bonds as a raw material to initiate the free radical polymerization to obtain the target product. The method is carried out under mild production conditions, has a simple preparation process, can effectively prevent enzyme inactivation in the middle modification procedure to ensure high enzyme activity, and can also greatly improve the heat stability of the lipase nano-sized polymer biocatalyst particle. Besides, the novel method simplifies the procedure of separating the intermediates to reduce the production cost, and is favorable for the large-scale industrial production.

The invention aims at providing a system and a method for tracking interface waves which are echoes generated between water and workpieces and also called as water layer waves. The system comprises an FPGA module, an ultrasonic transmission module, an ultrasonic reception module, an AD sampling module, a gate position control assembly and a gate width control assembly, wherein the ultrasonic transmission module is used for generating high voltage and transmitting a high-voltage signal to a transducer; the ultrasonic reception module is used for receiving an ultrasonic signal converted electric signal in the transducer; the AD sampling module is used for sampling the received electric signal into a digital signal and sending the digital signal to the FPGA module; the gate position control assembly is used for determining the effective starting position of the sampling; the gate width control assembly is used for determining the range of the effective starting position of the sampling. The system and the method for tracking interface waves are specifically capable of realizing the following functions: (1) exciting an ultrasonic probe and sampling the echoes; (2) tracking the interface waves; (3) simplifying the original ultrasonic data and retaining the data effective to the workpiece detection.

The invention discloses an efficient multipath laser probe detecting system and method. The detecting system can divide laser sources into multiple paths and transmit the laser sources to multiple to-be-detected points through optical fibers, corresponding spectral signals are transmitted back to the detecting system after laser plasma is generated through excitation, finally, multi-point and simultaneous on-line detection by one laser probe instrument is finally realized, the optical fibers are used for transmitting laser and the spectral signals, accordingly, the anti-jamming capability of a laser probe in the severe environment can be improved, and the application cost of the laser probe instrument can be substantially reduced. The efficient multipath laser probe detecting system is particularly suitable for a large industrial process containing multiple production lines, has the on-line monitoring capability for multiple elements of a product on the production lines and facilitates popularization and generalization of a laser probe technology, and the application cost of the laser probe instrument can be substantially reduced.

The invention discloses a plasmon enhanced deep ultraviolet detector, its preparation method and application. The plasmon-enhanced deep ultraviolet detector includes a heterojunction, a spline electrode and a periodic metal particle array, the spline electrode is formed on the heterojunction, and the periodic metal particle array forms between the pinion electrodes. The invention utilizes the localized plasmons generated by the metal particles and the plasmon periodic diffraction resonance mode generated by the metal particle array to couple the incident light in the two ultraviolet bands to the metal nanostructure to realize the detector surface The light field of the two ultraviolet bands is enhanced, the absorption rate of the detector material to the incident light is improved, and the photoresponsivity of the deep ultraviolet detector to the two wavelengths is improved; and the plasmon resonance can be realized by adjusting the period and size of the metal particles Coupling with GaN / AlGaN detector detection wavelength.

The invention discloses a curing agent for heavy metal pollution soil, and preparation and application methods thereof. The curing agent is prepared from the following materials in percentage by mass: 30 to 55 percent of steel slag powder, 20 to 50 percent of quicklime powder and 5 to 30 percent phosphate-loaded charcoal. The curing agent has the advantages that firstly, the curing agent can obviously reduce the heavy metal mobility and the toxicity leaching quantity in the heavy metal polluted soil, and is particularly applicable to acid pollution sites with the high heavy metal content and various contaminant types; after the polluted soil restoration, the curing agent can be used as environment-friendly materials to realize the resource utilization; the environment risk of the pollution sites in the secondary development and utilization can be obviously reduced; meanwhile, the raw materials of the curing agent can be easily obtained; the cost is low; the preparation is simple; the use is convenient; the effect is stable; the curing agent can be popularized in a large range and can be applied to the curing stabilization restoration of the composite pollution sites.

The invention discloses a curing agent for compound heavy metal polluted soil as well as preparation and application methods of the curing agent. The curing agent is prepared from the following materials in percentage by mass: 40 to 65 percent of steel slag powder, 5 to 25 percent of light calcined magnesia and 20 to 45 percent of phosphate activated bone powder. The curing agent has the advantages that firstly, the curing agent can obviously reduce the mobility and the toxicity leaching amount of heavy metals in the heavy metal polluted soil, and is particularly applied to an acidic polluted land which is high in heavy metal content and contains various pollutants; after the polluted soil is repaired, the curing agent can be used as an environment-friendly material for recycling, so that the environmental risk during secondary development use of the polluted land is obviously reduced; moreover, as the raw materials are readily available, the curing agent is low in cost, easy to prepare, convenient to use and stable in effect and can be popularized and applied to curing and stabilizing repairing of the compound polluted land in a large scale.