132results about How to "Serve as an indicator" patented technology

The present invention relates to a method for extracting DNA by using magnetic nano composite material and its kit. The described method includes the following steps: (a). making magnetic nano composite material by contacted with liquid sample containing DNA to form liquid mixture, in which the described magnetic nano composite material has superparamagnetic endonucleus, intermediate silicon dioxide covering layer and external shell, and its diameter is 50-300 nm; and (b). using magnetic field to separate the magnetic nano composite material in which DNA is adsorbed from the liquid mixture so as to can obtain the magnetic nano composite material in which DNA is adsorbed. Said invented method can simply and effectively extract out DNA from various samples.

The invention discloses a recycling method of DNA and agent box through magnetic nanometer composite material in the biological technical domain, which comprises the following steps: (a) blending magnetic nanometer composite material and recycled sample; forming solid-liquid dispersing suspension; (b) adsorbing DNA to separate magnetic nanometer composite material from solid phase; obtaining magnetic nanometer composite material with adsorbed DNA; (c) washing impurity; evolving DNA from magnetic nanometer composite material. The magnetic nanometer composite agent box to recycle DNA possesses magnetic nanometer composite material solution, dissolving liquid, washing liquid I and washing liquid II and eluent.

The invention discloses a vacuum cleaner. A display which displays working state of a dust collecting cavity is arranged between the lower side of a top shell of the vacuum cleaner and the dust collecting cavity of a dust collecting unit, and consists of a shell, an indicating body which is positioned inside the shell, and a valve plate of which one end is fixed outside the lower part of the shell; the shell corresponding to the valve plate is provided with a through hole; communication of the inside of the display and the dust collecting cavity can be controlled through opening and closing of the valve plate; a lateral surface of the shell far from the first through hole is provided with a second through hole; the second through hole is communicated with atmosphere outside the cleaner through an intercommunicating pore; the top part of the shell of the display is provided with a transparent display window; and the top shell corresponding to the display window is provided with a display window opening. The vacuum cleaner adopts a valve plate type blade spring structure, has simple process, reduces friction between the indicating body and the shell, and has non friction between the valve plate and the shell.

The invention provides a lighting module of barcode recognition equipment. The lighting module comprises a lighting source, a condensing lens, a camera shooting module, a fixed support and a bottom plate; the fixed support is used for fixing the lighting source, the condensing lens and the camera shooting module on the bottom plate; the condensing lens comprises two structural assembly blocks and an effective mirror plane, the two structural assembly blocks are arranged side by side at a certain interval, and the effective mirror plane is erected at the tops of the two structural assembly blocks, so that the structural assembly blocks and the effective mirror plane form a containing space; and the lighting source is arranged in the containing space, and light rays of the lighting source penetrate through the condensing lens to supplement light for the image recognition zone of the camera shooting module. The condensing lens, the lighting source and the camera shooting module are combined to form a whole body by the fixed support, so that the lighting source, the condensing lens and the camera shooting module can be firmly fixed, thus being uneasy to cause dislocation and displacement, being convenient to install and fix, saving installing and operating time, and greatly improving working efficiency.

The invention provides an electromagnetic short circuit protection breaker, including: a breaker body, which includes a housing; a handle for realizing on-off operation is arranged outside the housing; a linkage mechanism is connected onto an end of the handle, separation and contact of the movable and static contact of the movable and static contact slices are realized by using the linkage mechanism; also including: a short circuit detection unit for short circuit fault detection, and generating a trigger signal at time of short circuit generation; an electromagnetic action mechanism for receiving the trigger signal, and separating the movable and static contacts by pushing the linkage mechanism with the electromagnetic action.

The invention provides storm-preventing type aquaculture equipment and belongs to the field of cultivation. The storm-preventing type aquaculture equipment comprises a cylindrical net box, the lower end of the net box is located above the horizontal plane, the upper end of the net box extends out of the horizontal plane, the outer wall of the upper end of the net box is fixedly connected with an annular air bag, the air bag comprises an inflation portion and a sealed portion fixedly connected with the inflation portion, the sealed portion is not communicated with the inflation portion, and the sealed portion is fixedly connected to the outer wall of the upper end of the net box; an end cover is arranged at an end port of the upper end of the net box, the end cover is matched with the end port in the upper end of the net box in size, the end cover is provided with a water hole, and one end of the end cover is hinged to the net box; the inflation portion is provided with an air hole, the air hole is fixedly connected with an air pipe, the two ends of the air pipe are communicated, the lower end of the air pipe is communicated with the inflation portion, a ball valve is arranged at the upper end of the air pipe, and the middle of the end cover is fixedly connected with an indicating rod. When the end cover is closed, the indicating rod is vertically upwards arranged. The storm-preventing type aquaculture equipment can prevent the net box from being turned over in the side direction and is delicate in structural design.

The invention relates to a preparation method of polypropylene fiber for absorbing mercury ions in waste water. The preparation method comprises the following steps of: (1) weighing and dissolving 1 to 3g of para-diethylamino benzaldehyde and derivatives thereof into absolute alcohol, heating in water bath, slowly dipping alcohol solution of diamine compounds, condensing and refluxing, standing, obtaining yellow precipitates, filtering and precipitating, recrystallizing with alcohol, then filtering, drying and obtaining organic compound for absorbing mercury ions; and (2) evenly mixing 150 to 300g of polypropylene and 2 to 5g of organic compound for absorbing mercury ions, carrying out melting and blending by a multifilament 400 melt spinning machine, extruding, spinning and obtaining the polypropylene fiber. The invention has simple preparation and high yield; the obtained organic compound has good effect of absorbing mercury ions, can generate color variation or fluorescence variation when reacting with mercury and has no toxicity and no radiation; the polypropylene fiber has uniform dispersion in polypropylene high polymer and good spinnability and can achieve good mercury absorbing effect when addition is less than 2 percent.

The invention discloses an improvement method of grating anti-counterfeiting phase modulation based on color values. The method comprises the following steps: step 1: selecting and decomposing a hostimage; step 2: determining a hidden area of the host image and anti-counterfeiting information: at least one color channel of the host image has a hidden area where the anti-counterfeiting informationcan be set, the hidden area has s*s pixel points, the color channel where the hidden area is located is recorded as a mother set, the color values of all pixel points of the hidden area on the motherset are the same and are recorded as alpha, and the rest color channels are 3 secondary versions; step 3, performing halftone processing on the host image; and step 4: hiding the anti-counterfeitinginformation: selecting the anti-counterfeiting information that needs to be hidden, establishing a lattice point selection area in the hidden area corresponding to the contour of the anti-counterfeiting information in image processing software, recording lattice points in the lattice point selection area as a set A, and performing phase modulation on the lattice points in the set A. By adoption ofthe improvement method disclosed by the invention, the modulable angle range of the lattice points is expanded.

The invention discloses a light guidance fire hazard evacuation system and a light guidance fire hazard evacuation control method. The light guidance fire hazard evacuation system comprises a plurality of fire hazard sensing units, a fire hazard control host and a plurality of evacuation indication units and also comprises a plurality of cameras, wherein the fire hazard sensing units, the evacuation indication units and the cameras are independently wirelessly communicated with the fire hazard control host; the fire hazard control host receives and stores data sent from the fire hazard sensingunits or the cameras, judges whether a fire hazard happens or not and determines the position of a fire hazard site; and a Flyod algorithm is adopted to calculate an optimal path from a fire hazard area to each emergency exit, and the evacuation indication units are controlled for indication. By use of the Flyod algorithm, the optimal evacuation path is calculated, people can be evacuated from different emergency exits, so that evacuation time can be effectively shortened, and congestion accidents are avoided. A laser light and a bidirectional LED (Light Emitting Diode) indication light source are adopted to jointly serve as an evacuation indication sign, an indication effect is improved, so that people can quickly evacuate when smoke is thick, and therefore, evacuation efficiency when the fire hazard happens can be greatly improved.

The invention relates to the technical field of road anti-fog, in particular to a fog lamp and a method for improving driving safety in foggy areas. The fog lamp used in the method at least includes a lamp body (100) having a light-emitting surface (110) and a reflective surface (120). ) towards the front of the vehicle, and the reflective surface (120) towards the rear of the vehicle. By setting the fog lamps through the method of the invention, the blind area is small and the anti-fog effect is good.

The invention discloses an intelligent induction type exercise training indication ring which comprises an outer shell, wherein the outer shell is a circular ring, a sensing receiver and a sensing emitter which are outwards arranged in the normal direction of the circular ring are arranged on the lateral side of the circular ring, an indicator light, a counterpoint light and a PCB are arranged ina cavity of the circular ring, and the PCB is electrically connected with the sensing receiver, the sensing emitter, the indicator light and the counterpoint light; an intelligent control chip is arranged on the PCB, and varieties of indication procedures are arranged in the intelligent control chip; a control switch is arranged on the circular ring, and the control switch comprises a power switchand a procedure selector switch corresponding to varieties of the indication procedures; a battery jar is arranged on the circular ring, and the battery jar is electrically connected with a power supply terminal of the PCB. The intelligent induction type exercise training indication ring disclosed by the invention can automatically provide paths and target indication in an exercise training process, so that an exercising training effect is improved.

The invention discloses fire indication escape equipment for underground engineering. The equipment comprises an indication box, a light-emitting cavity is formed in the lower end of the indication box; the light-emitting cavity is filled with neon. A frame opening is formed in the bottom in the light-emitting cavity; a transparent plate is fixedly connected to the inner wall of the frame opening,a sliding plug cavity is formed in the indication box, a magnetic sliding plug is connected into the sliding plug cavity in a sealed and sliding mode, a spiral coil is embedded into the inner wall ofthe sliding plug cavity, two discharge needles are symmetrically and fixedly connected to the inner wall of the light-emitting cavity, and the two ends of the spiral coil are connected with the two discharge needles in a coupled mode respectively. The magnetic sliding plug slides up and down on the inner wall of the sliding plug cavity; the spiral coil cuts the magnetic induction line and generates induction current, the tips of the two spray points respectively gather a large amount of positive and negative charges, and according to the point discharge phenomenon, when the charges on the spray points gather to a certain degree, point discharge occurs between the spray points, so that neon can emit orange red light after being broken down, and then escape indication is performed.

The invention discloses a landscape anti-collision guardrail for a bridge, which comprises a base, the top of the base is fixedly connected with an inner anti-collision cylinder, the center of the top of the base is fixedly connected with a support rod, and the top of the support rod penetrates the inner anti-collision cylinder and extends to The exterior is fixedly connected with a decorative head, the midpoints on both sides of the support rod are fixedly connected with a fixed cylinder, and both sides of the inner anti-collision cylinder are provided with outer anti-collision plates. The present invention solves common anti-collision barriers by setting inner anti-collision tube, outer anti-collision plate, hard rubber column, trapezoidal block, first buffer spring, second buffer spring, third buffer spring, fixing plate and connecting plate The problem of poor protection performance, through multi-layer buffer and anti-collision measures, even in the face of a large impact force, it will not break and cause danger, save a lot of building materials, reduce construction costs, basically there is no safety hazard, and the shape It is beautiful and will not affect its normal use at all.

The invention provides a light reflecting component and a laser marking module, and relates to the technical field of laser marking modules. The light reflecting component comprises a reflecting part;the reflecting part is used for reflecting incident light circumferentially; the reflecting part comprises a reflecting conical surface and a reflecting plane; the reflecting conical surface and thereflecting plane are sequentially arranged along the axis direction of the reflecting conical surface; the reflecting conical surface is used for forming linear light in the circumferential directionof the light reflecting component; and the reflecting plane is used for forming dot light in the circumferential direction of the light reflecting component. By means of an optical component, a beam of incident light can form 360-DEG annular light and dot light at the same time; the dot light plays an indication role for 360-DEG annular light; when the laser marking module with the light reflecting component rotates horizontally, the 360-DEG annular light is not changed; the dot light can horizontally move; and thus, the dynamic indication effect is achieved.

The invention provides peroxide-sterilization water-based organic ink as well as a preparation method and application thereof. The peroxide-sterilization water-based organic ink is prepared from the following raw materials: 10wt%-45wt% of a binder; 0.1 wt%-2wt% of an organic dye; 1 wt%-20 wt% of an alkaline control agent; 50 wt%-75 wt% of an water-based system solvent; wherein the water-based system solvent consists of water and an organic solvent; the organic solvent is selected from one or more of methanol, ethanol, n-propyl alcohol, isopropanol and n-butyl alcohol. Compared with the prior art, the peroxide-sterilization water-based organic ink provided by the invention adopts the water-based system solvent; by matching with other specific content components, good interaction is realized, the color of the product changes after peroxide sterilization, so that an indication effect is achieved, and the ink has the advantages of low VOCs emission, no heavy metal and avoidance of heavy metal pollution, and can be widely applied to printing of products such as indication cards, indication labels (adhesive tapes), paper-plastic bags and the like.

The invention discloses a beauty device. The beauty device comprises an ultrasonic vibrator, a vibration piece, a pressure sensor and a controller. The vibration piece is driven by the ultrasonic vibrator to vibrate, and transmits vibration to skin; the pressure sensor is used for detecting outside pressure; the controller is electrically connected with the pressure sensor and the ultrasonic vibrator, and used for controlling the output power of the ultrasonic vibrator according to the pressure value detected by the pressure sensor.

The invention discloses a grating anti-fake method for improving identification grating extraction performance. The method comprises the following steps of S1, selecting a host image, specifically, decomposing the host image, thereby enabling the host image to be composed of four color channels of a channel C, a channel M, a channel Y and a channel K; setting a hiding area of anti-fake informationon at least one color channel of the host image, and recording the color channel on which the hiding area is located as a master mask, wherein color values of all pixels in the hiding area on the master mask are alpha, and the alpha is 0.1-0.5; recording the rest color channels as three secondary masks, and reselecting the host image when the hiding area of which alpha is 0.1-0.5 cannot be selected; S2, halftoning the host image; and S3 hiding the anti-fake information. According to the method, the stealthiness and extraction effect of the anti-fake information are improved.

A multifunctional teaching pen comprises a pen body and a pen cap, wherein a laser light is arranged at the tail of the pen body, a laser light switch, a power supply, an electronic watch and an electronic watch controller are arranged on the pen body, a correcting eraser is arranged at the bottom of the pen cap, a correcting eraser cover is arranged at the bottom of the correcting eraser, the power supply is a solar mobile power supply, and the laser light switch is a noctilucent silica gel key. The multifunctional teaching pen is integrated with various functions, and is simple in structure, convenient to use, easy to carry and particularly suitable for miniature classroom teaching.

The invention discloses a stable anemometer tower. The stable anemometer tower comprises a pedestal, a base and multiple connecting seats. The base is connected with the pedestal, the connecting seatsare connected and stacked into a tower tube, and the tower tube is connected to the base. The base comprises foot stools, the pedestal is provided with mounting grooves corresponding to the foot stools in number, lifting adjusting assemblies are arranged in the mounting grooves, and the lifting adjusting assemblies are used for adjusting the tower tube to be kept horizontal. A calibration assembly is arranged in the center of the base, the calibration assembly comprises a peening hammer and a suspension rope, and a landmark coinciding with the projection of the center point of the base is arranged on the pedestal. The adjusting assemblies are arranged on the pedestal of the anemometer tower, the calibration assembly arranged on the base can achieve an indicating effect, during maintenanceof patrolling maintenance staff, the patrolling maintenance staff can judge whether the anemometer tower deviates or not by observing whether the projection of the peening hammer coincides and alignswith the landmark or not, and the horizontal direction of the anemometer tower is balanced through lifting adjusting of the heights of the foot stools.

The invention provides a fingerprint imaging module group and electronic equipment. The fingerprint imaging module group comprises a light source which is used for producing incident light; a light-emitting layer which is used for transmission of the incident light and storing the luminous energy of a part of the incident light and also used for producing indicating light according to the stored luminous energy; a sensing surface on which the reflected light carrying the fingerprint information is formed through the incident light transmitting through the light-emitting layer; and an image sensor which is used for acquiring the reflected light so as to acquire the fingerprint image. According to the technical scheme, when fingerprint sensing is not performed, the fingerprint imaging modulegroup is enabled to emit light by the light-emitting layer so that the indicating light can realize the indicating effect under the dark condition and realize the function of indicating the positionof the fingerprint imaging module group, and thus the user experience can be improved.

The invention provides a tooth preparation undercut detection device. The tooth preparation undercut detection device comprises a horizontal guide rod, a left arm, a right arm, a slider, a positioningblock, a measuring pin and a positioning pin. One end of the left arm is movably connected with the slider through a connector, the other end of the left arm is connected with an end of the right arm, the other end of the right arm is connected with the positioning block, the positioning block is fixed to one end of the horizontal guide rod, the other end of the horizontal guide rod is movably passed through the slider, the lateral side of the slider is provided with a limiting block, the limiting block is provided with a through hole, the measuring pin is passed through the through hole, anda top plate of the slider is provided with an elastic limiting rod and a rigid limiting rod. The tooth preparation undercut detection device has the advantages that taking a mold to duplicate a modelis not required, time is saved, whether a preparation has an undercut can be quickly detected, and the device is suitable for any tooth site and can be extended to any position with operational spacelimited, such as a posterior tooth; ink marking on the measuring pin enables the position of the undercut in a tooth to be detected and marked, and indicating can be achieved during continual tooth preparation.