14 results about "Tyndall effect" patented technology

The invention belongs to the technical field of Raman spectrum, and relates to detection of traditional Chinese medicinal materials, in particular to a Raman spectrum-based identification method for producing areas of traditional Chinese medicinal materials. The method comprises the following steps: preparing to-be-detected traditional Chinese medicinal materials into traditional Chinese medicinal material powder, adding the traditional Chinese medicinal material powder into water, performing ultrasonic treatment and standing, and obtaining supernate with a Tyndall effect as a to-be-detected sample; detecting the sample to be detected by adopting a Raman spectrum to obtain original Raman spectrum data; performing residual error processing and residual error smoothing processing on the original Raman spectrum data in sequence, and identifying the producing area of the to-be-detected traditional Chinese medicinal material according to the result of the residual error smoothing processing. According to the identification method provided by the invention, the classification effect can be realized by using a model with a simple basis, the detection operation is simple, convenient and rapid, and the method has the advantages of high accuracy, good reproducibility and the like.

The present application relates to a kind of tunnel hole outside light smoke blocking system setting method based on the Dandar effect, belong to the field of tunnel operation safety.The method is to set two sets of light smoke blocking system on the tunnel entrance and front road section, combined with the sound-light alarm on both sides of road is used;Linear section setting mode: the distance between light smoke blocking system is set according to one times stopping sight distance;Curved section setting mode: curvature radius is large, one times stopping sight distance is not affected by roadside shelter, the spacing between light smoke blocking system is greater than one times stopping sight distance;Curvature radius is small, one times stopping sight distance is not affected by roadside shelter, according to the spacing of one times stopping sight distance, the setting of hole outside and adjacent two light smoke blocking system is carried out;At the same time, the setting spacing of sound-light alarm is set according to the spacing of 80% of linear section;Curvature radius is small, one times stopping sight distance is affected by roadside shelter, and strengthening warning sign is set in front of tunnel.The present application can realize fast, safe and effective blocking vehicle.

The invention discloses a colorimetric / Tyndall effect dual-signal mode detection system based on nanogold, which comprises a light source part, a cuvette and a spectrograph, under the action of the light source part, transmission light and scattered light of a reaction system in the cuvette are collected through the spectrograph, and an absorption spectrum and a scattered spectrum are obtained; a reaction system is contained in a cuvette, the reaction system comprises nucleic acid aptamer functionalized nanogold, a buffer solution and an analyte, and the nucleic acid aptamer functionalized nanogold is obtained by modifying nanogold with oligonucleotide PolyA10-T5-Apt. A nucleic acid aptamer corresponding to amoxicillin is embedded into a three-section type oligonucleotide sequence, namely a polyadenine-polythymine-nucleic acid aptamer (polyA-T-Apt), oligonucleotide is modified on the surface of nanogold through a polyA fragment, the amoxicillin is detected at the same time by utilizing the colorimetric characteristic and the Tyndall effect of the nanogold, and dual-signal mode output is achieved.

This application provides a control method and an air purifier for an air purifier, relating to the field of air purifier technology. The air purifier includes a purifier body and a first light source. The purifier body has an air inlet and a first chamber, which are in fluid communication. The first light source is located in the first chamber, and the incident direction of the first light source intersects the extension direction of the air inlet. The control method includes the following steps: obtaining the working mode of the air purifier, which includes a purification mode; and turning on the first light source when the air purifier is in purification mode. In this application embodiment, users can intuitively experience the purification effect of the air purifier. Simultaneously, because the first light source is located in the first chamber, when the purifier body is working, the air velocity and direction in the first chamber are less affected by interference or fluctuations compared to the outside of the air purifier, which is conducive to the formation of the Tyndall effect and helps optimize the user experience.

The application belongs to the technical field of inorganic material preparation, and discloses a method for preparing high-purity alumina sol. The method comprises the following steps: taking raw aluminum or refined high-purity aluminum as raw material, reacting with alcohol to generate aluminum alcoholate, mixing with water after purification and refining, fully hydrolyzing, and separating the generated alcohol. Deionized water is added to the crude pseudo-boehmite, and the mixture is stirred at 120 DEG C to 250 DEG C, dried, and calcined at 500 DEG C to 1100 DEG C to obtain alumina of different crystal forms. The alumina is mixed with a dispersing agent and deionized water, and is ground and refined for 1 to 12 hours to obtain uniformly dispersed alumina sol. The obtained alumina sol is translucent, can produce obvious Tyndall effect, has a D50 particle size of less than 100 nm, a ZETA potential of less than -30 mV, and no obvious precipitation within half a year of standing. The application has simple operation, low pollution, and can be used in the fields of battery material modification and precision polishing.

The invention belongs to the technical field of functional fabrics, and particularly discloses a fabric capable of not imaging after scattering sunlight based on the Tyndall effect and a preparation method of the fabric. The fabric capable of not imaging by scattering sunlight based on the Tyndall effect comprises composite flat fibers, the composite flat fiber sequentially comprises a high-permeability membrane layer, a hollow particle layer and a semi-gloss membrane layer; the hollow particle layer is prepared from polyurethane glue and hollow particles. The hollow particles comprise at least one of hollow silicon dioxide and aluminum oxide. According to the design, light scattering points are formed in the adhesive layer through the hollow silicon dioxide, and incident light is subjected to multiple refraction in the fiber in cooperation with the light diffusion characteristic of the semi-gloss PET. Finally, the fabric achieves a non-imaging privacy effect (the contour of a human body cannot be recognized outdoors), meanwhile, the high UVA blocking rate and the high light transmission retention rate are achieved, and the contradiction between the light transmission of a traditional window screen and privacy protection is solved.

The present application relates to a kind of highway traffic emergency blocking control method based on the effect of Tyndall, belong to the field of highway operation safety and emergency management and control. Including: monitoring center obtains traffic event related information and judges whether to block traffic;If not blocking traffic, then open road section variable information board, sound and light alarm and traffic signal light warning oncoming vehicle;If traffic is to be blocked, then on the basis of opening road section variable information board, sound and light alarm and traffic signal light, simultaneously open light smoke screen blocking equipment, to reduce the vehicle entering the incident area and block oncoming vehicle in the blocking area before the incident area;In the case where traffic needs to be blocked, a control model is constructed with the purpose of blocking traffic as soon as possible and minimizing the number of vehicles entering the incident area, and the working state of the sound and light alarm and the light smoke screen blocking equipment is adjusted according to the vehicle density and speed feedback in the blocking area. The present application can be applied to different accident categories and environments, and has the effects of rapid warning, safe guidance or rapid parking.

According to the stirring cup, during stirring, the stirring assembly moves to drive the stirrer to rotate, so that when the stirrer stirs liquid containing powder in the stirring cavity, light emitted by the light-emitting part penetrates through the light holes in the shading patch, the light is in the liquid containing the powder, the Tyndall effect is formed under refraction, and therefore the liquid containing the powder can be stirred. Therefore, whether the stirring effect is optimal or not can be accurately judged. The shading patch shields the stirring assembly in the axis direction of the cup body (the direction from the cup body to the cover body assembly is required to be explained), so that the stirring assembly is prevented from being exposed in the stirring cavity, and the stirring cup is more attractive. The patch switch is attached to the interior of the mounting groove in the peripheral wall of the cup body, so that a space for the patch switch does not need to be reserved in the mounting cavity, and the cup body is thinner.

The invention discloses a preparation method of ganoderan nano-selenium particles, and belongs to the field of nanotechnology and functional food. The method comprises the following steps: firstly, dissolving ganoderan, sodium selenite and a surfactant I in water to form a first dispersion liquid; adding ascorbic acid, and reacting at 20-60 DEG C for 1-2 hours to obtain a second red dispersion liquid; then adding a carrier and a surfactant II, and continuously stirring for 1-2 hours to obtain a third dispersion liquid with a Tyndall effect; and finally, carrying out pressure spray drying granulation to obtain the light red to dark red amorphous ganoderma lucidum polysaccharide nano-selenium particles with the Z-Aveage particle size of 100-1000 nm. The nano-selenium particles prepared by the invention have the advantages of small particle size, high bioavailability, low toxicity, good fluidity and the like, and are suitable for functional foods or health-care products for resisting oxidation, regulating immunity, resisting aging and the like.

The invention relates to a road traffic emergency blocking control method based on the Tyndall effect, and belongs to the field of road operation safety and emergency management and control. Comprising the steps that a monitoring center obtains traffic event related information and judges whether traffic is blocked or not; if traffic is not blocked, a road section variable information board, an audible and visual alarm and a traffic signal lamp are turned on to warn coming vehicles; if traffic needs to be blocked, light smoke screen blocking equipment is synchronously started on the basis that a road section variable information board, an audible and visual alarm and a traffic signal lamp are started, so that vehicles entering an incident area are reduced, and future vehicles are blocked in a blocking area in front of the incident area; under the condition that traffic needs to be blocked, a control model with the purposes of blocking the traffic fastest and enabling the vehicles to enter the accident area at least is constructed, and the working states of the audible and visual alarm and the light smoke screen blocking equipment are adjusted according to the vehicle density and vehicle speed feedback in the blocking area. The system can be suitable for different accident types and environments, and achieves the effects of rapid warning, safe guiding or rapid parking.

The invention discloses a dual-mode ascorbic acid (AA) detection method based on RGB colorimetry and gray analysis. The method comprises the following steps: firstly preparing nano-silver sol, then uniformly mixing a certain volume of nano-silver sol, ultrapure water and a glycine-NaOH buffer solution with 0.2 mL of 0.01 mol / L AgNO3 solution, and adding an ascorbic acid standard solution or a solution to be detected; a self-made device combined with a smart phone is used for collecting a reaction system image, and a Tyndall effect average gray value (AG) and a color intensity value (RGB channel value) are extracted as double response signals for quantitative analysis of AA. According to the invention, an intelligent mobile phone RGB colorimetric method and a Tyndall effect gray scale analysis method are combined, rapid and sensitive detection of AA is realized, and the method has the advantages of high reliability, good selectivity, strong portability and the like, is suitable for POCT (point-of-care testing) on-site rapid detection, and is convenient to popularize and use.

This utility model discloses a highly realistic electronic flame decorative light, including a base, an atomizer assembly, and a light emitter assembly. The atomizer assembly and the light emitter assembly are installed within the base. The atomizer assembly has a spray section, and the light emitter assembly has a focusing projection section. The spray section and the focusing projection section are arranged at an angle, and the beam of light with a clear boundary projected from the focusing projection section intersects with a portion of the atomized area in the spray section, forming a misted light spot area. This utility model optimizes the use of the atomizer assembly and the light emitter assembly to form a misted light spot area, thereby producing a Tyndall effect and achieving a flame-like light effect.

The utility model discloses a colloid Tyndall effect teaching demonstrator, which is not limited by places and has various types, and comprises a bottom plate, a laser pen bracket is arranged on the bottom plate, and a laser pen is arranged on the laser pen bracket; a test tube bottle bracket, a crystal ball bracket, a white smoke observation bottle, a powder observation bottle and a fixing frame are sequentially arranged on the bottom plate; a test tube bottle is clamped on the test tube bottle bracket, a crystal ball is arranged on the crystal ball bracket, and a water mist generator is arranged on the fixed frame; the test tube bottle, the crystal ball, the white smoke observation bottle and the powder observation bottle are positioned on a light path of laser irradiated by the laser pen; the overall structure is compact, the weight is light, carrying is convenient, and operation is easy; the method is flexible, convenient, wide in application type, time-saving and trouble-saving; the teaching environment is prevented from being polluted; flying dust is avoided, the principle of'green chemistry 'is met, and mounting and taking are convenient; various types of colloid media can be demonstrated, so that experiment contents and steps are more complete, and students can understand and participate in the experiment visually.

The invention discloses a portable eye protection light field generating device based on a microparticle diffusion medium. The portable eye protection light field generating device comprises a wearable or placeable main body, a light source module, a diffusion medium layer and a control unit, the light source module comprises at least four independently controlled light emitting units; the diffusion medium layer is arranged on the light emitting side of the light source module and comprises microparticles dispersed in a medium, and the particle size of the microparticles ranges from 50 nm to 10 [mu] m; and the control unit independently adjusts the luminous intensity of each luminous unit. Light rays emitted by the light source module enter the diffusion dielectric layer, are subjected to diffuse reflection for multiple times by the microparticles and are uniformly emitted from the surface of the dielectric layer; the control unit enables the luminous intensity of the luminous unit to be gradually increased in a gradient mode from the center to the edge, a diffuse reflection light field with the dark center and the bright edge is formed in front of the eyes of the user, and no direct light enters the eyes of the user. The Tyndall effect and the microparticle diffusion principle are applied to the portable eye protection equipment for the first time, the eye protection light field with zero direct incidence, gradient self-adaption and environment self-adaption is achieved, and visual fatigue is remarkably reduced.