1174results about How to "Achieve absorption" patented technology

The invention discloses a manufacturing method of a GaInP/GaAs/InGaAsP/InGaAs four-junction solar battery. By utilizing a wafer bonding method, the GaInP/GaAs/InGaAsP/InGaAs four-junction solar battery is integrated by a GaInP/GaAs double-junction solar battery growing based on a GaAs substrate and a InGaAsP/InGaAs double-junction solar battery growing based on an InP substrate; by utilizing the InP as a supporting substrate, the four-junction solar battery with respective band gap energies of 1.9/1.4/1.05/0.72 eV is realized, sunlight full spectral absorption and energy conversion are realized to a greater degree, and 32.8 percent of efficiency is realized in irradiation of AM1.5G and under the sun. Based on the development of two kinds of double-junction batteries, the bonded four-junction solar battery reduces the shortages of high cost caused by utilizing a plurality of different substrates in a mechanical cascade solar battery system and complex optical system and optical loss in an optical integrated battery, and effectively solves the problem of lattice mismatching of growing a uniwafer four-junction cascade semiconductor solar battery material. The high voltage and low current outputs are realized and the resistance consumption in a high concentrator battery is reduced.

The invention discloses a method for extracting rice protein by using rice, which comprises the following steps: soaking and grinding, rice milk adjustment, primary liquefying, centrifugal separation, homogenizing, washing, centrifuging, enzymolysis, enzyme inactivation, screen separation, washing, centrifuging, drying, crushing and packing so as to obtain the rice protein. The method overcomes the defects that the high-concentration alkali liquor has damage effect on rice protein amino acid in an alkali extraction process, the quality of the extracted rice protein is poor, and the purity and sanitary index of the extracted protein cannot reach the edible standard; and in other methods for extracting the rice protein by using enzyme preparations, the rice milk is liquefied at a temperature of over 95 DEG C and then is dried at the high temperature, so the rice protein is denatured, the color is darkened, and the function of the rice protein is damaged. The extracting method of the invention keeps good physical functionality of the rice protein, implements industrialization of the extraction and production of the rice protein, and meanwhile improves the production conversion rate and quality of rice starch sugar.

The invention discloses an integrated type ecological floating bed and the water body ecological system repairing technology thereof. A physical space of the integrated type ecological floating bed is formed by constructing a floating bed, a sinking bed, a buoyancy adjusting bottle, a lifting chain and an ecological barricading net, and integrates ecological components such as indigenous emergent aquatic plants, submerged plants, attached aquatic plants, fishes, snails and biochemical zeolite. The ecological behaviors of the ecological components are in linear cause and effect relation. The ecological components and organisms in the physical space form a semi-enclosed ecological subsystem with integral completeness. The upper line and the water body ecological system to be repaired are strong in coupling capability, and ecological factors in the lower line can exist stably. The damaged water body ecological system sufferring from one or a plurality of types of pollutions including water body eutrophication, heavy metal pollution, organic pollution and the like can be repaired by building pioneer communities and utilizing self-cleaning capability of the ecological system, pollution is removed, integral restoration or rebuilding of the damaged water body ecological system is promoted, simultaneously environment is beautified, and ecological deterioration of a healthy water body can be prevented.

The invention discloses a polymeric foam composite material having a gradient structure, which contains at least two thermoplastic polymers, wherein content of the thermoplastic polymers and foam size in the material change in gradient along thickness direction or radial direction. The preparing method of the polymeric foam composite material comprises the following steps of: (1) preparing a blend of series of thermoplastic polymers having same component and different mass ratios or different components; (2) molding the blend of the thermoplastic polymers prepared in the step (1) by vacuum film pressing to obtain a sheet-like composite, and then orderly overlapping at least two sheets of sheet-like composite having same component and different mass or different components and hot-pressing into one piece to form a composite material blank; and (3) placing the blank prepared in the step (2) in a foaming high-pressure reaction kettle and introducing supercritical fluid as a foaming agent, after the supercritical fluid reaches saturated condition in the blank, foaming the composite material blank by a quick pressure drop method or quick temperature rise method, and then cooling and shaping.

The invention discloses a light-weight orthogonal corrugated core sandwich composite structure and a preparation method thereof. The composite structure comprises an upper panel, a lower panel and an orthogonal corrugated core body arranged between the upper panel and the lower panel; compared with the traditional transverse isotropic corrugated core sandwich structure, in the orthogonal approximately-isotropic corrugated core sandwich composite structure disclosed by the invention, anti-shear capacities and anti-bending capacities in two in-plane orthogonal directions are approximately the same; in out-of-plane vertical directions, with the adoption of the design thinking and method of orthogonal corrugations, the anti-local buckling capacity of the orthogonal approximately-isotropic corrugated core sandwich composite structure is greatly enhanced compared with the transverse isotropic corrugated core sandwich structure, thus effectively avoiding the occurrences of local collapse and deformation along a corrugated surface; a gap formed by the orthogonal design of the core layer provides a space for multifunctional design for the structure, and functional components and parts can be placed, and sound absorption materials or other functional materials can be filled according to the needs of engineering applications, thus realizing multi-functionalization.

The invention discloses a multi-section reaction tower for polyoxymethylene dimethyl ether synthesis and a polyoxymethylene dimethyl ether synthesis process unit. A tower body of the multi-section reaction tower comprises at least two layers of reaction sections from top to bottom; each layer of reaction section is provided with a tower plate and forms a bent passageway; catalysts are arranged between the tower plates in a filling manner; gas ascension pipes are arranged between the adjacent layers of reaction sections; a gas phase outlet is formed in the tower top of the reaction tower; and each layer of reaction section is provided with an inlet with a valve and an outlet with a valve. According to the multi-section reaction tower for polyoxymethylene dimethyl ether synthesis and the polyoxymethylene dimethyl ether synthesis process unit, the conversion equilibrium point of the reaction is effectively controlled, the advancement of the reaction equilibrium toward bigger polymers is effectively deferred, the conversion rate and the selectivity are improved, the reaction is carried out under the conditions that the catalyst activity is relatively high and the temperature does not excessively influence the reaction equilibrium, and good conversion rate and selectivity are obtained.

The invention relates to a wave energy power generation device, in particular to a pendulum wave energy power generation device, belonging to the technical field of ocean energy application. The pendulum wave energy power generation device structurally comprises a pendulum plate, a mechanical transmission mechanism for transmitting the swinging of the pendulum plate, a soleplate used for fixing the mechanical transmission mechanism, and a power generator for converting the mechanical energy in the mechanical transmission mechanism into electric energy. The pendulum plate is connected with the mechanical transmission mechanism through a pendulum plate shaft, and the mechanical transmission mechanism is connected with a motor shaft of the power generator through a coupler. According to the pendulum wave energy power generation device, absorption effect of full wave can be achieved by wave force acted on the pendulum plate through the mechanical transmission mechanism; the conversion efficiency is improved by a large margin; and the full absorption of the waves can be well realized and the power generation efficiency can be improved.

The invention relates to a Z-scan optical nonlinear measuring device and method. The device and the method can be used for measuring the wavelengths of two lasers, wherein light sources can be continuous light or pulsed light, the pulse width and the repetition frequency are adjustable, and the incident laser power is continuously adjustable from 0 to 100%. According to the device, an optical isolator can be used for effectively eliminating the influence of surface reflection of an optical element and a to-be-measured sample to a laser so as to ensure that a measuring result is accurate and reliable; a lambda/4 wave plate is rotated to measure nonlinear optical parameters of the sample under the action of lasers in linear polarization, circular polarization and elliptical polarization states; light paths are adjusted to change the relative intensity of the two beams of light so as to implement two-tone time-resolved nonlinear absorption and refraction measurement; and the polarization states of pump light and probe light can be adjusted to measure the time response characteristics of the sample under the action of the lasers in the different polarization states. The device and the method can be used for measuring data of transmission openings, transmission closed holes and reflection openings simultaneously, thus being suitable for measurement of transparent samples and semitransparent samples.

The invention discloses a tobacco stalk biochar soil conditioner capable of reducing the content of heavy metals in tobacco, improving the tobacco quality and improving the soil environment, as well as an improvement method for tobacco field soil. The tobacco stalk biochar soil conditioner is prepared by mixing the following raw materials in parts by weight: 40-60 parts of tobacco stalk biochar and 40-60 g of a passivant. The tobacco stalk biochar soil conditioner is easy to obtain raw materials, simple in preparation method and low in cost, can effectively reduce the content of heavy metals in tobacco, and can improve the quality of tobacco field soil; a large number of waste tobacco stalks generated in tobacco growing areas are adopted as the raw material, the resource recycling of waste materials is realized, the sustainable development of the tobacco industry is facilitated, and the tobacco stalk biochar soil conditioner is suitable for large-scale popularization and application in the field of tobacco growing.

The invention provides an impedance frequency select surface. A frequency select surface layer (1) leads in a dielectric spacer layer (2) and a resistance loading layer (3) which are constructed with a dissipative network; the resistance loading layer (3) and the isolation matching layer equivalently and electrically load the network and are in cascade connection with the frequency select surface layer; the frequency select surface layer and the resistance loading layer are attached to the dielectric spacer layer; the frequency select surface layer loads incident wave and electromagnetic wave capacitance and inductance, and leads in reflection loss; the resistance loading layer loads incident wave and electromagnetic wave resistance of the impedance frequency select surface layer; and the dielectric spacer layer is matched with the loaded resistance, the loaded capacitance and the loaded inductance. The impedance frequency select surface leads in the dielectric spacer layer and the resistance loading layer, so that limitation that a stop frequency band of the existing frequency select surface has the total reflection characteristic is eliminated; the stop frequency band is reduced effectively; and the technical problem that an RCS (Radar Cross Section) of the existing frequency select surface radome is limited to the structure shape is solved. The impedance frequency select surface can serve as RCS control of a spatial filter and a radome.

The invention discloses a heat tube type photovoltaic photo-thermal member which comprises a glass cover plate, solar battery pieces, a packaging material TPT, a solar spectrum selective absorption coating, a tube plate type heat absorption plate, a heat insulation layer and an outer section frame, wherein the solar battery pieces are in series connection and parallel connection in rows, and the solar spectrum selective absorption coating is used for absorbing the infrared wave band of the solar spectrum; the glass cover plate, the solar battery pieces, the TPT packaging material and the solar spectrum selective absorption coating are sequentially laminated and attached from top to bottom; the tube plate type heat absorption plate is mainly formed by a plate body and a heat collection tube arranged on the lower surface of the plate body, the cross section of the heat collection tube is of a downwards protruding arc shape; the upper surface of the plate body is fixed on the lower surface of the solar spectrum selective absorption coating to form a strong platy body; the heat insulation layer covers the lower surface of the tube plate type heat absorption plate and is supported by a base plate, and the heat insulation layer and the strong platy body are jointly fixed in the outer section frame. By the adoption of the heat tube type photovoltaic photo-thermal member, an air interlayer is decreased, and therefore heat conversion efficiency is enhanced; in addition, because the heat collection tube is of the arc shape, the contact area can be enlarged, pressure-bearing can be enhanced, and it can be guaranteed that the member runs stably for a long time.

The invention discloses a solar battery based on an inorganic bulk heterojunction and a preparation method thereof. The battery comprises a glass substrate, an FTO (fluorine-doped tin oxide) layer which is used as a positive electrode, a heterojunction composite film layer consisting of an Sb2S3 (stibnite) block and a TiO2 (titanium dioxide) nano-bar array, a polymer MEH-PPV electron barrier layer, a PEDOT: PSS hole transferring layer and an Au (gold) film layer as a battery negative electrode. The preparation method of the battery is simple, and the battery has a spectrum response range of 300 nm to 750 nm; and when an optical active layer of the battery stays at an illumination state, conversion efficiency of the battery can reach 5.58 percent.

The invention relates to a high-sensitivity photosensitive gas sensor and a preparation method thereof. In a photosensitive gas sensor made of a gas sensitive material, a photocatalyst is introduced to improve the gas sensitivity of a sensitive body, namely a photocatalyst-gas sensitive function composite oxide semiconductor is taken as the sensitive body, on the one hand, the gas sensitive material has good response to gas to be tested, and on the other hand, the photocatalyst absorbs ultraviolet light to the largest extent; and the combined action results in improvement of illumination efficiency and gas sensitive efficiency of the sensitive body, and the sensitivity of the gas sensor is improved finally. Compared with sensors made of a pure gas sensitive material, a sensor made of a sensitive body in which the mass ratio of zinc dioxide to stannic oxide is 3:7 has the sensitivity to 100ppm ethanol gas at 250DEG C improved from 4.3 to 10, and a sensor made of a sensitive body in which the mass ratio of titanium dioxide to stannic oxide is 3:7 has the sensitivity to 100ppm ethanol gas at room temperature improved from 9 to 16.

The invention belongs to the technical field of electronic materials, in particular to an electromagnetic wave absorbing structure and a design method thereof. The invention selectively impregnates the fully cured honeycomb pore microwave absorbing slurry, the maximum channel radius of the conductive channel is not only enlarged, so as to avoid the generation of high-order resonant mode in the conductive channel, increase the propagation of the incident wave in the honeycomb hole, improve the resonant absorption of the energy of the incident wave by the structure, greatly enhance the absorption performance of the low frequency, and further reduce the absorption performance of the high frequency; Compared with the traditional honeycomb absorbing structure, the pattern honeycomb absorbing structure has the same absorbing strength and the weight is lighter, and the bandwidth is 2 - 18GHz.

The invention discloses a high-energy laser beam expanding and absorbing device which comprises a laser beam expanding cone, an energy absorption cavity, a front panel and a fixing plate, wherein the energy absorption cavity adopts a hollow cylinder; the front panel is arranged at a laser incident end of the energy absorption cavity, and the fixing plate is arranged at the rear end of the energy absorption cavity and used for fixing the laser beam expanding cone; and the laser beam expanding cone comprises a pointed beam expanding cone, at least two spherical beam expanding cones and cylinder transition sections which are arranged in the laser incident direction sequentially, and radii of cylinders of the cylinder transition sections are increased gradually in the laser incident direction. The laser beam expanding cone simultaneously realizes beam expanding of incident laser beams in the length direction and the circumference direction of the absorption cavity, and effectively reduces the power density of laser shot to a heat absorption cylinder by the laser beam expanding cone; and by means of the high-energy laser beam expanding and absorbing device, absorption and conduction of hundred thousand joules to a megajoule of high-power laser energy of continuous waves are realized, the measuring accuracy of an energy meter is improved greatly, and the device has wide applicability.

The invention discloses a multilayer structure plasma meta-material tunable ultrawide-band wave absorber of which the structure comprises a bottom metal reflecting plate, a dielectric substrate whichis arranged on the metal plate, solid state plasma resonant units which are arranged on the dielectric substrate, "Y"-shaped solid state plasma resonant units which are arranged in the dielectric substrate and solid state plasma columns which connect all the resonant units. The wave absorber has great absorbing effect for the TE polarized waves and controls the excitation area of the resonant units formed by the solid state plasma to realize excitation of different resonant units through programming so as to achieve the objective of dynamic regulation and control of different frequency of thewave absorber and realize ultrawide-band absorbing of the wave absorber; besides, the working frequency of the wave absorber can cover the whole Ku band under the condition of appropriate selection ofthe excitation area, and absorbing of low frequency electromagnetic waves can also be realized under the condition of small physical size.

The invention discloses a light multifunctional composite structure. The composite structure comprises a first outer surface plate, a second surface plate, a metal foam sandwich layer and a honeycomb sandwich layer, wherein the metal foam sandwich layer and the honeycomb sandwich layer are arranged between the first outer surface plate and the second surface plate, and the honeycomb sandwich layer is hexagonal aluminum honeycombs or square aluminum honeycombs. According to the sandwich structure through the composition of metal foams with the hexagonal aluminum honeycombs or the square aluminum honeycombs, the weight can be obviously reduced, and a plurality of functions such as load bearing, sound absorption, sound and heat insulation and shock resistance are provided.

The invention discloses a houghite photocatalyst based on visible light response and a preparation method thereof, belonging to the technical field of preparation of photocatalysts. A series of houghite photocatalysts with response under visible light are synthesized by adopting a nucleation/crystallization separation method. By adjusting and controlling the composition of metal and interlaminar guest ions, a series of photocatalysts with excellent performance and full spectrum absorption under visible light can be obtained. The series of catalysts have very high absorption, can make full use of visible light part of sunlight, have high dye photocatalysis performance, can be applied to photocatalytic degradation of environmental pollutants, and have photocatalytic performance greatly superior to that of the conventional P25TiO2 photocatalyst. The photocatalyst produced by adopting the preparation method has low cost and simple process, is easy and convenient to operate, and is easy for mass production.

The invention discloses a top-end-extended cross terahertz absorption structure and an application thereof. The structure is characterized in that a common cross metamateiral structure is changed to be a top-end-extended cross metamaterial structure. Compared with the common cross metamaterial structure, the top-end-extended cross metamaterial structure is smaller in size, achieves zooming from 60mum to 30mum and achieves identical frequency terahertz radiation absorption. By means of the structure, the antenna size is greatly reduced, and more importantly, the structure can be arranged on a microbridge structure for a terahertz room temperature detector. The structure has the advantages of being small in size, simple in structure and high in terahertz radiation absorption and capable of being compatible with the existing microbridge structure to make the terahertz room temperature detector, and the detection imaging resolution is improved.

The invention relates to a novel mud therapy application, which comprises nonwoven fabric, a plaster and a plaster protective film. A self-heating bag is arranged on the upper side of the nonwoven fabric. The plaster comprises components: 1-70% of nano-level mineral powder, 0.1-40% of plant extracts or traditional Chinese medicine, 0.1-20% of transdermal enhancer and 1-70% of pressure-sensitive adhesive or water base cement. The invention further relates to a novel wax therapy application, which comprises nonwoven fabric, a plaster and a plaster protective film. A self-heating bag is arranged on the upper side of the nonwoven fabric. The plaster comprises components: 1-70% of nano-level mineral powder, 0.1-40% of plant extracts or traditional Chinese medicine, 0.1-20% of transdermal enhancer and 1-70% of pressure-sensitive adhesive or water base cement. Different parts of the novel mud and wax therapy application coordinate with each other to realize comprehensive treatment effect.