81results about How to "Not easy to catch" patented technology

The invention discloses an amphiphilic polypeptide DGRGGGAAAA and a preparation method thereof, and a novel anticancer drug delivery system and a preparation method thereof; the preparation method of the amphiphilic polypeptide DGRGGGAAAA comprises: 1) using DMF (dimethyl formamide) as a solvent, DCM (dichloromethane) as an expanding agent and DIC (diisopropyl carbodiimide) as a catalyst to synthesize DGRGGGAAAA by a solid-phase synthetic process; 2) mixing the DGRGGGAAAA and doxorubicin (DOX), dissolving the mixture in water, subjecting the system to multiple dialysis, centrifuging the dialyzed system, and removing supernate to obtain the novel anticancer drug delivery system. The novel anticancer drug delivery system has significantly improved efficiency, and has the advantages of high targeting action, small side effect, low toxicity and the like.

The present invention discloses a system used for pet fitness and a control method therefor. The system comprises a training apparatus and a signal transceiver; the training apparatus comprises a base, wherein an upright column, a central processing unit, a first wireless communication module and a first UWB (Ultra Wide Band) positioning sensor are arranged on the base; a rotating mechanism is arranged on the upright column, the rotating mechanism is connected to a cross beam, a guide rail is arranged on the cross beam, a sliding block and a driving mechanism that drives the sliding block to move are arranged on the guide rail, and a spherical food storage apparatus is arranged below the sliding block; a second UWB positioning sensor, a second motorized telescoping pole and a third motorized telescoping pole are arranged on the top of the upright column, the second motorized telescoping pole and the third motorized telescoping pole are arranged transversely, a third UWB positioning sensor is arranged at the front end of the second motorized telescoping pole, and a fourth UWB positioning sensor is arranged at the front end of the third motorized telescoping pole. The system for pet fitness has quite high interestingness and easily attracts a pet, so that the pet can interact with the training apparatus so as to achieve the good fitness effect.

The invention discloses a pet bodybuilding system and a working method for the same. The system comprises a gym and a signal transceiver, wherein a bodybuilding site is arranged in the gym, a bodybuilding bicycle is arranged in the bodybuilding site, and location base stations are arranged at the four corners of the bodybuilding site; a central controller is further arranged in the gym; the bodybuilding bicycle comprises a base, a food storage bin used for storing pet foods is formed in the base, the inlet bin door of the food storage bin is formed in the top of the base, the outlet bin door of the food storage bin is formed in one side of the base, and a drive device is arranged at the bottom of the base. The working method comprises the step of detecting the positions of the bodybuilding bicycle and a pet by a UWB module, thus calculating the movement direction of the bodybuilding bicycle, and controlling the bodybuilding bicycle to move towards a direction away from the pet. The system disclosed by the invention is extremely high in interestingness and easy to arouse the interest of the pet, and the pet achieves a great bodybuilding effect by virtue of interaction with the bodybuilding bicycle.

The invention discloses a network safety protection method of PON carrying small base station backhaul and a system thereof and relates to the passive optical network field. The method comprises the following steps of programming a segment of VLAN address pool in a PON system, wherein the VLAN address pool is especially used by a user small base station backhaul network and is not overlapped with VLANs of other services; assigning an port number of ONU carrying a small base station backhaul service, wherein an assigned port of the ONU is especially used for carrying the small base station backhaul; regularly and dynamically designating a VLAN number of the small base station backhaul service by the PON system and dynamically issuing VLAN configuration to a corresponding port of the ONU; and after the ONU receives the VLAN configuration, dynamically generating corresponding configuration and realizing communication of the small base station backhaul service. In the invention, isolation among different services in the PON system can be realized.

Provided is a preparation method for polymerization-type asymmetric hindered phenol anti-oxidant resins. The preparation method comprises steps: with strong acid resins as catalysts, and benzene or cyclohexane as a solvent, 2-tert-Butyl-p-cresol and dicyclopentadiene are subjected to a polymerization reaction to form phenol-type petroleum resins; the phenol-type petroleum resins and saturated alcohols with one to three carbons are subjected to an alkylation reaction to form polymerization-type asymmetric hindered phenol anti-oxidant resins in presence of phosphoric acid and nickel-containing catalysts; the alkylation reaction products are subjected to reduced pressure distillation to remove the unreacted raw materials and solvent to obtain polymerization-type asymmetric hindered phenol antioxidant resin products. The preparation method has obvious positive effects, the polymerization reaction and the alkylation reaction have high selectivity and conversion rate, and the yield is about 80%. What is more important is that compared to traditional hindered phenol antioxidants, the synthesized polymerization-type asymmetric hindered phenol antioxidant resins are advantaged by high antioxidant activity, high heat stability, extracting resistance, compatibility, non-toxic and environmentally friendly characteristics.

The invention discloses a pulverizing process method for desulfurized limestone, which comprises the following steps: crushing a limestone raw material by a crusher; grinding crushed limestone particles by using a vertical rotary mortar mill; screening the ground limestone powder by using a V-shaped powder concentrator; guiding the large-particle limestone powder into the vertical rotary mortar mill again, and guiding the small-particle limestone powder into a special powder concentrator; guiding the fine powder smaller than 250 meshes into a fine powder finished product bin through the special powder concentrator, and guiding the rest fine powder into a coarse powder finished product bin; and collecting fine powder in the crusher and the vertical rotary mortar mill into a dust collector through a dust collection main pipe and dust collection branch pipes by a fan. The fine powder smaller than 250 meshes is sorted out through the special powder concentrator and used for wet flue gas desulfurization after a boiler, the ground limestone powder is fully utilized, in-boiler dry desulfurization and tail secondary desulfurization of a CFB boiler are combined, and resources are saved while ultra-low emission of flue gas is achieved.

The invention relates to a mitoxantrone targeting sustained-release long-circulating nanometer liposome and a preparation method. The particle diameter of the liposome is between 90nm and 120nm, the particle diameter is uniform, and the surface is rich in folic acid. The ratio of the compositions of the raw materials is as follows: the mass part ratio of PEG-modified O-quaternized carboxymethyl chitosan tofolic acid-modified O-quaternized carboxymethyl chitosan: O-quaternized carboxymethyl chitosan to mitoxantrone is 1:1-2:2-4:0.5-1; and the mass ratio of O-quaternized carboxymethyl chitosan to cholesterol is 4-2:1. The inverse emulsion polymerization or film dispersion method is used to prepare the liposome, and the whole preparation process is simple and quick, the preparation period is short, the entrapment efficiency of the prepared polymer liposome for drugs is more than 90% and the drug loading rate is up to 9.0%; and through the modification of surface PEG, the polymer liposome is not easy to be captured by the reticuloendothelial system of human body, the in vivo circulation time is prolonged, and simultaneously the bioavailability and biocompatibility of the polymer liposome are increased.

The invention discloses a large-size predacious mite collection method. The large-size predacious mite collection method is characterized in that (1) alcohol which has the concentration of 70%-75% and occupies about 65% of a centrifugal tube is added into the centrifugal tube; a leaf is supported by one hand and a container filled with the alcohol is rapidly and inversely buckled on mites to be captured by the other hand to finish collection; or (2) the large-size predacious mite collection method of vegetables comprises the following steps: a small-size writing brush is dipped with quantitative collection liquid containing 25%-50% of 75% alcohol and 75%-50% of glycerol; after a large-size predacious mite is stuck by the small-size writing brush, a specimen is transferred into a specimen tube to finish the collection; or (3) the large-size predacious mite collection method in weeds comprises the following steps: a self-made simple insect trap (shown as figure) is combined with a sweep net and a yellow basin; after impurities captured by the sweep net are poured into the yellow basin, the mites are sucked into an insect suction device and put into the container for containing the predacious mites, so that the collection is finished.

Provided is a preparation method for polymerization-type asymmetric hindered phenol anti-oxidant resins. The preparation method comprises steps: with boron trifluoride complex as a catalyst and benzene or cyclohexane as a solvent, p-methylphenol and dicyclopentadiene are subjected to a polymerization reaction to form phenol-type petroleum resins; after alkali washing and water washing, the polymerization reaction products are subjected to reduced pressure distillation to remove unreacted p-methylphenol in the reaction liquid to obtain refined phenol-type petroleum resins; the phenol-type petroleum resins, saturated alcohols with one to three carbons and isobutanol are subjected to an alkylation reaction to form polymerization-type asymmetric hindered phenol anti-oxidant resins in a solvent in presence of phosphoric acid and nickel-containing catalysts; the alkylation reaction products are subjected to reduced pressure distillation to remove the unreacted raw materials and solvent to obtain polymerization-type asymmetric hindered phenol antioxidant resin products, and the yield is about 90%. The preparation method has obvious positive effects, through asymmetric substituent groups antioxidant effects are raised. Compared to traditional phenol antioxidants, the synthesized polymerization-type asymmetric hindered phenol antioxidant resins are advantaged by high antioxidant activity, high heat stability, extracting resistance, compatibility, non-toxic and environmentally friendly characteristics.

The invention provides an intelligent unlocking method, a lock body main control unit and a mobile unit, aiming at solving the problems that the existing intelligent anti-theft lock is low in safety and inconvenient in manual operation. The intelligent unlocking method comprises the following steps: (1) enabling the lock body main control unit to generate a signal I and radiating the signal I outby taking a human body as a signal transmission medium; (2) enabling the mobile unit to receive the data signal radiated out from the human body in the step (1), and judging whether the received datasignal is matched with preset data or not; if so, enabling the mobile unit to send a signal II to the lock body main control unit, and then entering the step (3); if not, keeping a locked state; (3) enabling the lock body main control unit to receive the signal II sent by the mobile unit, and unlocking. The human body is taken as the signal transmission medium, so that the communication distance is short, and the signals are not easy to capture.

The invention discloses a pet fitness training system and a working method thereof. The system comprises a training device and a signal transceiver. The training device comprises a base. The base is provided with a stand column, a central processing unit, a first wireless communication module, and a first UWB alignment sensor. The stand column is provided with a rotation mechanism. The rotation mechanism is connected with a cross beam. The cross beam is provided with a guide rail. The guide rail is provided with a sliding block and a driving mechanism driving the sliding block to move. A food storage device is arranged under the sliding block. The top of the stand column is provided with a second UWB alignment sensor, a second electric expansion link, and a third electric expansion link. The front end of the second electric expansion link is provided with a third UWB alignment sensor. The front end of the third electric expansion link is provided with a fourth UWB alignment sensor. The system has very good interestingness, and can easily interest pets. Through interaction with the training device, pets can achieve very good fitness effect.

The invention discloses a land culture method for tuna, and belongs to the field of aquaculture. Due to the fact that land culture of the tuna is different from cage culture, culture conditions and density, the bait type and the feeding mode corresponding to land culture are provided, and therefore the aim of successfully culturing the tuna on the land is achieved.

The invention provides a pet bodybuilding system and a control method thereof. The system comprises a training device and a signal transceiver worn by a pet. The training device comprises a pedestal. A vertical pillar, a central processing unit, a first wireless communication module, a first UWB location sensor and a touch screen are arranged on the pedestal. The vertical pillar is provided with a rotary mechanism which is connected with a cross beam; the cross beam is provided with a guide rail; the guide rail is provided with a slider and a driving mechanism driving the slider to move; a food storage device is arranged under the slider; the top of the vertical pillar is provided with a second UWB location sensor and a second electric telescopic rod and a third electric telescopic rod which are transversely arranged; the front end of the second electric telescopic rod is provided with a third UWB location sensor; the front end of the third electric telescopic rod is provided with a fourth UWB location sensor. The pet bodybuilding system has great interestingness and can arouse the interest of pets easily. A good bodybuilding effect can be achieved through the interaction between pets and the training device.

The invention provides a solar cell based on a two-dimensional perovskite single crystal and a production method thereof. The two-dimensional perovskite single crystal is used as a light absorption material of the solar cell, the two-dimensional perovskite single crystal comprises N layers of two-dimensional perovskite single layers, and the N is greater than or equal to 2; the two-dimensional perovskite single layer comprises n layers of common-angle lead iodide octahedrons, n-1 layers of organic ligands A and two layers of organic ligands B, wherein n is greater than or equal to 1, and the two-dimensional perovskite single layers have the same n value; the organic ligands A are embedded into a gap of the common-angle lead iodide octahedrons, the organic ligands B are located on two opposite sides of the common-angle lead iodide octahedrons respectively, a chemical formula of the two-dimensional perovskite single layers is B2An-1PbnI3n+1, and the number of carbon atoms of the organicligands B is larger than that of the organic ligands A; and the solar cell based on the two-dimensional perovskite single crystal has advantages of high environmental stability and high photoelectricconversion efficiency.

The invention discloses a pet exercise facilitating system and a work method of the same. The system comprises a training device and a signal receiving-sending device, wherein the training device comprises a pedestal; a stand column, a central processing unit, a first wireless communication module and a first UWB positioning sensor are arranged on the pedestal; the stand column is provided with a rotation mechanism; the rotation mechanism is connected with a cross beam; the cross beam is equipped with a guide rail; the guide rail is provided with a slide block and a driving mechanism driving the slide block to move; under the slide block is equipped a food storage device; a plurality of through holes are formed in the food storage device; a second UWB positioning sensor, a second electric telescopic rod and a third electric telescopic rod arranged in a transverse way are all placed on the top of the stand column; the front end of the second electric telescopic rod is provided with a third UWB positioning sensor; and the front end of the third electric telescopic rod is equipped with a fourth UWB positioning sensor. The pet exercise facilitating system has strong interestingness and can easily attract pets; and great exercise effect can be achieved with interaction between the pet and the training device.

The invention discloses an electro precipitator utilizing ionic wind to assist in dust collection and a polar plate. Theelectro precipitator comprises a front electric field and a rear electric field which are formed by symmetrically arranging a plurality of pairs of electro precipitator dust collection polar plates of the same structure, wherein barbed wire discharge electrodes are arranged between the electro precipitator dust collection polar plates of the front electric field, long-groove-shaped frame-shaped plates of symmetrical structures are arranged on the inner sides of the electro precipitator dust collection polar plates at the rear parts of the barbed wire discharge electrodes to form a cavity, and the opening direction of the cavity faces an airflow inlet; round wire discharge electrodes are arranged between the electro precipitator dust collection polar plates of the rear electric field; and the distance between the electro precipitator dust collection polar plates of the front electric field is smaller than that between the electro precipitator dust collection polar plates of the rear electric field. According to the novel polar plates with the cavity, fine particles can be effectively captured by utilizing ionic wind generated by discharging, the dust removal efficiency of the electric dust remover on dust with high and low specific resistances can be improved by utilizing the electrostatic shielding effect of the cavity, the application range of the electro precipitator on dust with different specific resistances is expanded, and therefore, the overall dust collection efficiency is improved.

The invention discloses an industrial control network security detection method, which comprises the following steps of: receiving a first random parameter, and dynamically obtaining a heterogeneous base detector subset from a base detector library; receiving a second random parameter, and dynamically obtaining an integration algorithm from an integration algorithm library, the integration algorithm library being pre-configured; adaptively extracting a feature subset of the network session to be detected based on each base detector in the heterogeneous base detector subset; and inputting the feature subset into the heterogeneous base detector subset, and processing an obtained output result through the integration algorithm to obtain a detection result. According to the method, the heterogeneous base detectors and the heterogeneous integration method are dynamically selected, and the dynamic heterogeneous integration method is adopted for different base detectors, so that attackers arenot easy to capture vulnerabilities of a detection system to fight against attacks.

The invention relates to a data decryption processing method and device and a data encryption processing method and device. The data decryption processing method comprises the following steps: receiving a first security sequence sent by a host; determining an encryption algorithm according to the duty ratio of the first security sequence; and receiving a third security sequence sent by the host, and decrypting the third security sequence according to the key and an encryption algorithm to obtain a second security sequence, wherein the secret key is a secret key determined according to set pull-down time and a preset coefficient, the third security sequence is a ciphertext of a second security sequence, and the second security sequence is target original data needing to be obtained from thehost. An encryption algorithm is selected through the duty ratio of the first security sequence sent by the host, and the slave sets a secret key and provides the secret key for the host for encryption processing. And the slave decrypts the third security sequence according to the selected encryption algorithm and secret key to obtain the original second security sequence, so that the effect of greatly improving the data transmission security is achieved.

The invention discloses a vulnerable traffic participant target object carrying platform car which comprises a chassis frame system, and a driving system, a steering system and a suspension system are installed on the chassis frame system. The driving system comprises two driving mechanisms arranged in the longitudinal direction of the chassis frame system, each driving mechanism comprises two driving assemblies arranged in the axial direction of the chassis frame system, and each driving assembly comprises a driving wheel; the steering system comprises two sets of steering assemblies arranged in the longitudinal direction of the chassis frame system, and the steering assemblies are rotationally connected with the two sets of driving assemblies in the driving mechanisms on the corresponding sides. The suspension system comprises suspension assemblies installed on the driving assemblies, and the suspension assemblies are integrally arranged in the horizontal direction. According to the scheme, the turning radius is small, and the overall height is low, so that operation of road traffic participants can be simulated more truly, the situation that the carrying platform vehicle is captured by an environment sensing system of a tested vehicle is reduced, and the accuracy of a test result is improved.

Provided is a preparation method for polymerization-type asymmetric hindered phenol anti-oxidant resins. The preparation method comprises steps: with strong acid resins as catalysts, and benzene or cyclohexane as a solvent, p-methylphenol and dicyclopentadiene are subjected to a polymerization reaction to form phenol-type petroleum resins; the phenol-type petroleum resins, saturated alcohols with one to three carbons and isobutanol are subjected to an alkylation reaction to form polymerization-type asymmetric hindered phenol anti-oxidant resins in presence of phosphoric acid and an active component nickel-containing alumina catalyst; the alkylation reaction products are subjected to reduced pressure distillation to remove oligomers, the solvent and the unreacted raw materials to obtain polymerization-type asymmetric hindered phenol antioxidant resin products, and the yield is about 90%. The preparation method has obvious positive effects, through asymmetric substituent groups antioxidant effects are raised. Compared to traditional phenol antioxidants, the synthesized polymerization-type asymmetric hindered phenol antioxidant resins are advantaged by high antioxidant activity, high heat stability, extracting resistance, compatibility, non-toxic and environmentally friendly characteristics.

The invention provides a bicycle anti-theft lock. A lock body which comprises a lock cylinder and a spring bolt controlled by the lock cylinder is arranged in a bicycle oblique beam, the side wall of the oblique beam is provided with a key hole which corresponds to the position of a lock cylinder lock hole, and the key hole is used for insertion of a key. The shaft wall of a bicycle centre shaft is provided with a spring bolt groove. The bicycle anti-theft lock is not easy to disassemble and can lock the center shaft conveniently, and therefore the chances of a bicycle to be stolen are reduced.

The invention discloses a nano immunoregulation medicine for regulating and controlling the ratio of Treg / Th17 cells in a focus microenvironment and a preparation method and application of the nano immunoregulation medicine. The preparation method comprises the following steps: taking an enzyme substrate polypeptide-PEG modified lipid bimolecular membrane which is subjected to targeted disintegration under the action of an enzyme which is in contact with placenta tissue interstitial fluid and is highly expressed as a shell; a drug carrier modified by surface specific high-expression marker antibodies of important immunomodulatory cells (Treg cells and Th17 cells) of a placenta is used as an inner core, and superparamagnetic ferroferric oxide SPIO nanoparticles, a small molecule drug for regulating functions of the Treg cells and the Th17 cells of the placenta, a therapeutic gene or a combination thereof are loaded in the drug carrier. The nano immunoregulation medicine for regulating and controlling the ratio of the Treg cells to the Th17 cells in the microenvironment of the focus can effectively avoid non-specific medicine absorption of other organs outside the placenta of a maternal body and a fetus, and then delivery and function regulation and control of specific medicines of the Treg cells and the Th17 cells in the placenta are achieved.

The invention provides a variable-focal-length infrared laser lighting flashlight, and relates to the field of lighting and security and protection. The variable-focal-length infrared laser lighting flashlight comprises a battery rear cover, a battery bin, a battery contained in the battery bin, a focusing ring, a laser base, a lens fixing ring, a front lens and a light cover according to the front-and-back position sequence. A laser light board and a laser drive circuit which are connected with each other are further included in the laser base. The light emitting direction of the laser light board faces one end of the front lens. The laser drive circuit is connected with the battery. According to the variable-focal-length infrared laser lighting flashlight, light supplementation is achieved for vidicons, gun aiming equipment and the like under the condition of a low lighting level, and meanwhile the variable-focal-length infrared laser lighting flashlight is high in invisibility and not prone to being caught by human eyes.

The invention discloses a placenta microenvironment targeted delivery probe as well as a preparation method and application thereof. A) a shell is a lipid bimolecular membrane which is modified by enzyme substrate polypeptide-PEG and is subjected to targeted disintegration under the action of an enzyme which is in contact with placenta tissue interstitial fluid and is highly expressed, and B) an inner core is a drug carrier which is modified by a marker antibody which is specifically and highly expressed on the surface of placenta trophoblast; and C) loading superparamagnetic ferroferric oxide SPIO nanoparticles, a small molecule drug for regulating and controlling the functions of placental trophoblasts, a therapeutic gene or a combination thereof in the drug carrier. The placenta microenvironment targeted delivery probe disclosed by the invention can effectively avoid non-specific drug absorption of other organs outside the placenta of a maternal body and a fetus, so that delivery and function regulation and control of a trophoblast specific drug in the placenta are realized.

The invention provides a metal oxide thin film transistor, a preparation method thereof and an array substrate, and belongs to the technical field of display. The metal oxide thin film transistor comprises a grid electrode, a grid electrode insulating layer, an active layer and a source-drain metal layer which are stacked on one side of a back plate; the active layer and the gate are respectively arranged on two sides of the gate insulating layer, and the source-drain metal layer is arranged on one side, far away from the back plate, of the active layer; and the active layer comprises a first metal oxide semiconductor layer and a second metal oxide semiconductor layer which are sequentially stacked on the side, away from the grid electrode, of the grid electrode insulating layer, wherein the carrier concentration in the first metal oxide semiconductor layer is greater than 1 * 10 < 20 > / cm < 3 >, the Hall mobility of carriers in the first metal oxide semiconductor layer is greater than 20 cm < 2 > / (V.s), and the total atomic percentage content of indium and zinc in the first metal oxide semiconductor layer is greater than 40%. The metal oxide thin film transistor can improve carrier mobility and stability.

The invention relates to mask processing, in particular to a soothing and repairing mask and a processing technology thereof. The method comprises the following steps that 1, a mask towel is installed in a skin care mask preparation device; 2, the same position of the mask towel is cut into different shapes twice to obtain two mask towels which can be spliced into a bend; 3, the two mask towels are packaged; and 4, essence is injected into a package. The T-shaped mask towel is cut off from a rolled mask towel along a T-shaped annular groove through a cutter, the cut-off T-shaped mask towel falls into a sinking groove II, and then the rolled mask towel is moved leftwards to the next position to be cut to obtain another T-shaped mask towel. For users with sensitive skin or masks containing salicylic acid, tolerance needs to be tried or established, and it is suitable for the facial T-zone, namely the forehead and the nose, to attempt to use the new mask or establish tolerance to avoid allergy.

The invention discloses a high-temperature garbage incineration grate furnace system based on material circulation and a working method, and belongs to the technical field of garbage incineration andclean combustion. The system involves a grate furnace, a primary air fan, a primary air steam preheater, an air preheater, an economizer, a flue gas treatment system, a chimney, a conveying fluidifying fan and a sorting machine. Fine sand materials are added in the grate furnace to serve as a heat carrying medium, so that combustion in the grate furnace is enhanced, the uniformity of the whole temperature in the furnace is improved, and formation of a concentrated high-temperature area is avoided; and meanwhile, the steam preheater and the air preheater are used for heating primary air, so that the combustion intensity in the grate furnace is further improved, local low-temperature areas are reduced, and discharge of harmful substances is effectively reduced.

The invention discloses filter cloth for water treatment. The filter cloth at least comprises a dust-removing filter cloth layer, wherein the dust-removing filter cloth is prepared by weaving warp yarns and weft yarns in a dual structure; the warp yarns adopt polyester monofilaments; the weft yarns are of a dual embedding structure; the weft yarns comprise a core material; the core material adoptsat least one of polyester monofilaments or basalt fibers or composite fibers; a reinforced layer is coated outside the core material; the reinforced layer is of a closed barrel structure formed by repeatedly winding the polyester monofilaments by taking the core material as the center or weaving materials with filtering effects; and antistatic coatings and / or adsorption coatings are arranged on the upper and lower sides of the dust-removing filter cloth. Since the surface of the monofilaments is smooth, some small particles penetrate. Therefore, the weft yarns adopt the dual embedding structure, and the smoothness of the weft yarns is reduced. Meanwhile, the compactness is improved, the filtering effect is improved, and the filter cloth is high in pressure resistance, simple in process and easy to operate.

The invention relates to a cat teasing device, and belongs to the field of pet supplies. The cat teasing device comprises a base, a power source, a main body shell, a laser emission module, a fixing frame, a main control circuit board and a main body motor, wherein the laser emission module is arranged at the top of the main body shell and comprises a laser emitter and an auxiliary motor swinging up and down, the fixing frame and the main control circuit board are fixed in the main body shell, the main body motor and a conductive disc are arranged on the upper side and the lower side of the fixing frame correspondingly, a main body motor shaft is fixed to the top of the base, and the main body motor drives the main body shell to rotate with the main body motor shaft as a rotating shaft. a vibrating needle of the power source is installed at the top of the base and contacts with the conductive dis; the main control circuit board controls the main body motor, the auxiliary motor and the laser emission module and is electrically connected with the conductive disc, and the power source supplies power to the main body motor and the laser emission module through the conductive disc and the main control circuit board. The cat teasing device has the beneficial effects that the moving circumference of laser spots is increased, active control is realized, and the main body motor, the auxiliary motor and the laser transmitter can be controlled according to the motion trail of an organism.

The invention discloses a filter bag for water treatment. The filter bag is a hollow barrel structure, an inner diameter of the filter bag is gradually increased from two sides to middle, a first filter layer and a second filter layer are arranged at openings at two ends of the filter bag, and a third filter layer is arranged in the middle of the filter bag; the third filter layer is made of dust-removal filter cloth, and the dust-removal filter cloth is formed by knitting warp-wise yarns and broad-wise yarns in a dual-structure; the warp-wise yarn adopts polyester monofilament, and the broad-wise yarn is a dual-embedding structure, and comprises the core material; the core material adopts at least one of polyester monofilament or basalt fiber or composite fiber, and a reinforcement layerwraps up the core material. The inner diameter of the filter bag is gradually increased to the middle from two sides, the filter speed can be initially and automatically adjusted through bore change,the filter effect is reinforced through the first filter layer, the second filter layer and the third filter layer, the resistance to pressure is strong, and the operation is easy.