48results about How to "Fix cleanup" patented technology

The invention discloses a broad-spectrum and high-efficiency method for extracting RNA from various plant tissues and belongs to the technical field of biochemistry. In the invention, boric acid buffer solution is used as a buffer system, the plant tissue RNA is effectively separated and enriched first, the mixture of tris(hydroxymethyl)aminomethane (tris), hydrochloric acid (HCl), ethylenediamine tetraacetic acid disodium salt (EDTA-Na2) and sodium chloride (NaCl) is used as extraction buffer solution, hexadecyl trimethyl ammonium bromide (CTAB) is used as a detergent, 1 mol / L guanidinium isothiocyanate is used as a strong denaturant for inhibiting the activity of RNase, and thus high-quality RNA is extracted. The method can extract RNA from tissues such as ovules, anthers, blades and fibers of cotton and can extract high-quality RNA from recalcitrant plants such as arabidopsis thaliana, rice, draba matangensis, banana (peel and meat), masson pine and deodar. When the method is used for extracting RNA, the yield is high, the purity is high, and salt pollutant is avoided.

The invention provides a method, device and system for checking and killing malicious application programs and relates to the technical field of computers. The method is characterized in that when a mobile terminal is locked, connection between the mobile terminal and a PC terminal is built, the mobile terminal is scanned through the PC terminal to determine whether the malicious application programs exist in the mobile terminal or not, and if so, the PC terminal transmits a control instruction to the mobile terminal to eliminate the malicious application programs. By the method, the problem that the malicious application programs cannot be eliminated due to the fact that the mobile terminal cannot be operated when the mobile terminal is locked is solved.

The invention relates to a method for removing foreign matter on the roller surfaces in a hot galvanizing horizontal type annealing furnace. The method comprises the fowling steps that (1) strip steel with the thickness being 0.5-0.7 mm is prepared at an inlet; (2) the strip steel is cleaned through alkali liquor with the concentration being 2+ / -0.5%, electrolytically cleaned and rinsed through hot water, and when the strip steel is dried, blowing-sweeping is conducted on the surface of the strip steel through hot air at the temperature larger than or equal to 120 DEG C; (3) after the strip steel for removing completely enters the furnace, all main burners on a direct-fired section (DFS) are closed, only an ignition burner is reserved, and a radiant heating section (RHS) is subjected to heat preservation at the temperature of 500 DEG C; (4) the tension of a furnace area is set to be 1.5-2.5 KN; (5) fans on a cooling section are all started; (6) a unit operate in a speed of 30m / min; (7) after 3-6 roller removing cycles, a long sample about 2.5-3 m of the roller removing strip steel is taken at an outlet, the lower surface of the long sample is polished through a gauze mesh, if no roller mark appears, the roller mark is removed, and if the roller mark is not removed, the step (6) and the step (7) continue to be conducted; and (8) after the foreign matter is removed, before a normal steel roll is led in, ignition is conducted to increase the temperature so as to recover all relevant parameters, and the unit enters the normal producing state.

The invention relates to a superhard material cutting tool and a preparation method thereof, which belongs to the technical field of superhard material. The superhard material cutting tool comprises a steel matrix and a cutting tool bit. The cutting tool bit consists of a polycrystalline diamond compact (1) and a diamond tool bit (2); 1 to 12 inclined cylindrical tanks used for welding the diamond compact are distributed on the outer circle surface of the steel matrix, and the center line of the inclined cylindrical tank forms a cutting angle with the cutting face; the diamond tool bit is welded on the surface of the steel matrix. The polycrystalline diamond compact is combined by PCD and cemented carbide matrix and is sintered from the mixture of diamond and the metal powder after being compacted; the structure thereof is in the shape of cylinder, ladder or squareness; the fringe area of the clad compact is the cutting blade. The superhard material cutting tool solves the materials hard to be processed in the cutting field, and ensures the surface of the machined part free of burr, nick, spray and chatter mark; the cutting and grinding combination not only improves the cutting speed, but also ensures the cutting quality.

The invention discloses a method for removing dirt on the surface of a trash rack in a narrow trash rack hole. The method can solve the problem of interference of the narrow trash rack hole on a dirt removal grab bucket or a movable pulley or a steel wire rope connected to the dirt removal grab bucket, can efficiently carry out the operation of removing the dirt on the surface of the trash rack in the narrow trash rack hole, and is applicable to places in which the height of the dirt removal grab bucket is smaller than the height from the bottom surface of a hydraulic structure of upstream side hole of the trash rack to the top surface of the trash rack. The method comprises the following steps: setting the rate of a pulley block of a lifting mechanism of a lifting dirt removal grab bucket (2) as 1, namely directly connecting a steel wire rope (3) of the lifting mechanism to the dirt removal grab bucket (2), dropping the dirt removal grab bucket (2) to the top of the trash rack (1), then moving the dirt removal grab bucket (2) from a position A at the top of the trash rack to an edge B of the hydraulic structure (4) near the upstream side of the trash rack along the water flowing direction, then dropping the dirt removal grab bucket (2) to the surface of the trash rack (1) and carrying out the dirt removal operation; then extracting the dirt grabbed by the dirt removal grab bucket (2) in an opposite order, and carrying out the operation of removing the dirt on the surface of the trash rack (1).

The invention relates to an efficient anti-scaling condensation pipe. A thin-wall circular pipe is made of stainless steel, straight pipes with equal diameter are at two ends, a corrugated pipe is on the middle part, and the outer surface of the corrugated pipe is evenly distributed with raised pyramid lug bosses. The condensation pipe has the following advantages that: because fluid in the corrugated pipe disturbs intensively at low flow rate to generate turbulent flow which has complete flushing function on the pipe wall, the easy-scaling problem of the condensation pipe is well solved; simultaneously, due to surface curvature change and axial extension change of the corrugated pipe caused by temperature and larger linear expansibility difference of the stainless steel pipe wall and the scale, the scale is easy to fall off, self cleaning of the pipe is achieved, and the scale removing problem of the condensation pipe is well solved; moreover, the pyramid lug bosses on the outer surface of the corrugated pipe increase the heat exchange area and puncture condensate membranes, so drops are easy to form and drop quickly along a wave crest, and the vapor-liquid conversion time is quickened. The pipe has light weight, high strength and quick heat transfer, and is superior to the prior structural copper pipe in economic benefit, service life and the like.

The invention discloses an aluminum-zinc-silicon-strontium-rare earth alloy ingot for continuous hot dipping and a manufacturing method of the aluminum-zinc-silicon-strontium-rare earth alloy ingot and relates to the technical field of alloy materials. The aluminum-zinc-silicon-strontium-rare earth alloy ingot is prepared from the following components in percentage by weight: 55 percent of aluminum, 43.19 percent of zinc, 1.65 percent of silicon, 0.1 percent of strontium and 0.06 percent of rare earth. The prepared aluminum-zinc-silicon-strontium-rare earth alloy coating has the characteristics of good adhesion performance, reliability in durability, oxidative resistance and acid and alkaline resistance and is capable of prolonging the service life of a coating product, solving the problem in the prior art of eliminating impurities which are generated as a melt of an aluminum alloy with a high ratio flows and an alloy melt is in a state of a high-temperature zinc pot for a long time and enabling the application of the product to be stable.

The invention discloses a magnetic composite nano material and a preparation method and application thereof. The magnetic composite nano material comprises modified magnetic nano particles and a modified macromolecular layer located on the outer surfaces of the modified magnetic nano particles, wherein the modified macromolecular layer comprises macromolecules and polymers connected with the macromolecules through pH response groups, and the response pH value of the pH response groups is smaller than 6.8. The magnetic composite nano material exists in a cluster form before reaching a tumor part, and due to the large particle size, the magnetic composite nano material is not likely to be rapidly removed by kidney metabolism; after the magnetic composite nano material reaches the tumor part,an assembly (the magnetic composite nano material) is gradually dispersed under the tumor subacid condition, the magnetic composite nano material exists in the tumor part in a small-particle-size magnetic nano particle form, and therefore the penetration depth of tumor tissue is increased; and due to falling of the surface modification polymers, surface positive charges are increased, and the nano particles are more easily taken by cells. Therefore, the pH response type magnetic composite nano material cluster enhances the MRI imaging contrast effect and improves the tissue penetration.

The invention belongs to the technical field of biomedical polymer materials, and discloses a polymer / laponite nano particle compound thermotropic hydrogel with adjustable and controllable phase transition as well as a preparation method and application of the polymer / laponite nano particle compound thermotropic hydrogel. The hydrogel is composed of laponite nanoparticles, an amphiphilic block copolymer and a solvent. The gel is in a flowing sol state at low temperature or room temperature, and can spontaneously form thermotropic hydrogel at body temperature along with temperature rise. Wherein the amphiphilic block copolymer is a block copolymer formed by taking polyethylene glycol (PEG) as a hydrophilic block and taking degradable polyamino acid as a hydrophobic block. The laponite and the block copolymer can generate hydrogen bond interaction, and the phase transition temperature of the compound system can be effectively regulated and controlled by regulating and controlling the compounding ratio and concentration of the laponite nanoparticles and the block copolymer. The hydrogel has good biocompatibility and biodegradability, and can meet the application requirements of drug delivery and tissue engineering repair.

The invention discloses a scum removing mechanism for sewage treatment. When the mechanism is used, a transmission vehicle body drives a concave screen sleeve to scrape and filter scum in a sewage pool through a toothed sleeve and a toothed rail, a flushing mechanism is used for flushing and collecting scum in the concave screen sleeve through a material receiving mechanism, so the scum removing mechanism has the advantage of effectively removing scum; meanwhile, when the screen body of the concave screen sleeve is used, through the buoyancy effect of a buoyancy ball, one half of the screen body of the concave screen sleeve is immersed into the sewage, and the other half is exposed from the sewage; and the screen body of the concave screen sleeve elastically stretches out and draws back tomove up and down below the transmission vehicle body through cooperation of a guide sliding rod and a buffer spring, so the screen body of the concave screen sleeve can intercept scum floating on sewage in a self-adaptive and self-adjusting mode, and the scum removing effect is effectively guaranteed.

The invention discloses a terrace grinding wheel and a manufacturing method thereof. The terrace grinding wheel comprises a base body and a plurality of tool bits sintered to the outer circle surfaceof the base body. Each tool bit comprises a front part and a rear part, wherein the top end of the front part is a sharp corner, and a groove is formed in the bottom end of the rear part. The tool bits are fixed to the base body through a hot press sintering method. According to the technical scheme, rapid cutting and smooth cutting removing are achieved, and the purpose of removing a terrace coating is achieved.

The invention discloses a triangular vertical arm surface rust removal device, and belongs to the field of automobile component machining. A base, an installing box, a cleaning tank, a containing ring, a filter net, a cleaning motor, a speed reducer, a power shaft, a containing net, a cover net, en elastic hook, a circulating pump, a spraying pipe and a spraying head are included. Acid liquid contained in the cleaning tank is sucked through the circulating pump, the spraying pipe and the spraying head are utilized for spraying a triangular vertical arm, rust on the surface of the triangular vertical arm is removed through the corrosion action of the acid liquid, and during spraying, after the rotation speed of the cleaning motor is reduced through the speed reducer, the containing net is driven to rotate, accordingly, the triangular vertical arm placed in the containing net is driven to rotate; and under the action of rotation of the triangular vertical arm, the front face and the backface of the triangular vertical arm are subjected to spraying and flushing, and accordingly the problem about triangular vertical arm surface rust removal is solved.

The invention relates to a waste heat recovery device for industrial furnace waste gas or coal gas. The waste heat recovery device comprises a cylindrical shell, and a heat exchange component, a soot blower, a working medium inlet collecting tank and a working medium outlet collecting tank which are arranged in the cylindrical shell, wherein the working medium inlet collecting tank and the working medium outlet collecting tank are respectively connected with the heat exchange component; the operating surface of the heat exchange component is a membrane type heated surface to damage an eddy zone of the heat exchange component so as to reduce the bonding degree of flying ash; the upper part of the membrane type heated surface is correspondingly provided with the soot blower, or the upper part and the middle part of the membrane type heated surface are correspondingly provided with soot blowers; and both ends of the cylindrical shell are provided with an industrial furnace waste gas / coal gas inlet and an industrial furnace waste gas / coal gas outlet so as to ensure that the industrial furnace waste gas / coal gas can fully scour the membrane type heated surface. The waste heat recovery device effectively solves the problem of removal of sticky ash and ultra-fine ash, the consecutive operation time of the waste heat recovery device is prolonged, and the heat exchange efficiency of the waste heat recovery device is improved.

The invention relates to a removal device of radioactive contamination, aims to solve the problem of removing sticky sodium in a damaged fuel assembly of a sodium-cooled fast neutron reactor in China and provides a cleaning device of the damaged fuel assembly. The cleaning device of the damaged fuel assembly comprises an outer cylinder, an inner cylinder, a partition plate, an overflowing pipe, a breathing pipe and a hanging cylinder; the inner cylinder is partitioned by the partition plate into two parts, the upper portion is a cleaning chamber, and the lower portion is an overflowing chamber; the hanging cylinder is located on the upper portion of the cleaning chamber and is in a funnel shape. The cleaning device of the damaged fuel assembly is reasonable in structure design and convenient and fast to operate, it is guaranteed that a cleaning agent and the sticky sodium react normally while efficient removal of a reaction product is achieved, and the utilization rate of the cleaning agent is greatly raised. By means of the cleaning device, the problem of removing sticky sodium in the damaged fuel assembly of the sodium-cooled fast neutron reactor in China is solved, sticky sodium cleaning efficiency is high, the removal effect is good, and the principle of minimization of radioactive waste is well satisfied.

The invention discloses an ice cream chocolate coating device and a using method thereof. The ice cream chocolate coating device comprises a bottom plate, a support plate, a support frame and a shovel plate. The top of the bottom plate is fixedly connected with the support plate. A conveying belt is arranged in the support plate. The top of the support plate is fixedly connected with the support frame, and a through hole is formed in the support frame. A rod body is movably inserted into the through hole. According to the ice cream chocolate coating device, the shovel plate structure is arranged above the conveying belt, thereby solving the problem that traditional ice cream chocolate coating devices cannot conveniently remove attachments on the surface of a conveying structure. Since width of the shovel plate is equal to that of the conveying belt, when the attachments on the surface of the conveying belt need to be removed, the shovel plate just needs to be pressed down against the surface of the conveying belt, and then the conveying belt is enabled to remove coating attachments from the surface of the conveying belt by the shovel plate as the conveying belt moves forward, thereby completing removal of the attachments.

The invention relates to the field of traditional Chinese medicines, in particular to application of geum aleppicum jacq. for preparation of a nitrite scavenger. The nitrite scavenger made from geum aleppicum jacq. has high nitrite ion removing capability, and can be further used for preparation of food, health food or medicines for reducing the cancer morbidity and treating nitrite poisoning of people smoking for a long term (smoking can promote excretion of the carcinogenic substance: tobacco-specific N-nitrite to a bile duct) or people highly taking other types of nitrite. The nitrite scavenger can remove nitrite ions as high as vitamin C.

The invention discloses a sealed Z-type corrugated edge belt conveyor, which comprises an upper horizontal-section shell, a vertical-section middle shell, and a lower inclined-section shell, wherein the upper horizontal-section shell is connected with the vertical-section middle shell, the vertical-section middle shell is connected with the lower inclined-section shell, and a Z type is formed; the lower part of the upper horizontal-section shell is provided with an excess material cleaning device; the excess material cleaning device has a scraping plate-type structure; the vertical-section middle shell has a round cross section; and the lower inclined-section shell is provided with a material return recovery device. According to the sealed Z-type corrugated edge belt conveyor, the performance is excellent, the maintenance is convenient, small block-shaped and strong wear-resisting material is particularly suitable for being conveyed, the conveying difficult problem of the material of the kind is solved, and as the excess material return device, secondary pollution on the environment is reduced, and workload for operation and maintenance is reduced.

The invention discloses a preparation method and application of a platinum peptide copolymer with a function of transporting siRNA (small interfering ribonucleic acid), carboxyl platinum with an anti-tumor effect is used as a cross-linked molecule, polypeptide containing arginine and lysine is cross-linked to form the platinum peptide copolymer, and then the platinum peptide copolymer is mixed and assembled with siRNA capable of inducing apoptosis by utilizing electrostatic interaction to obtain the platinum peptide copolymer with the function of transporting siRNA. And finally, wrapping with negatively charged lipidosome to form a stable nano compound, and finally preparing the nano delivery system for chemical / gene synergistic therapy. The nano delivery system solves the problems that the treatment effect of a single therapy is poor and siRNA is easy to degrade or clear in the process of reaching tumors, and has the advantages of water solubility, good dispersity, high stability, good biocompatibility and the like.

The invention discloses an intelligent weeding machine for planting herbaceous crops. The intelligent weeding machine comprises a body which is installed on the ground and weeding mechanisms; the body is composed of two parts, the two parts of the body are symmetrically distributed, a gap is reserved between the two parts of the body, a connecting beam is fixedly installed on the main body, and the two parts of the body are fixedly connected through the connecting beam; meanwhile, a handle is fixedly mounted at the right end of the body; and the weeding mechanisms are mounted in the body, and the number of the weeding mechanisms is two. The intelligent weeding machine has the beneficial effects that weeding wheels are mounted in the body, the weeding wheels extend into gaps among the crops during use, and then motors at the left ends of the weeding wheels are started, so that weeds among the crops are eradicated; and meanwhile, object recognition cameras at the left sides of the weeding wheels recognize the crops, and weeding wheels retract to protect the crops when the weeding wheels move to the crops, so that the problem that a traditional weeding machine cannot remove the weeds among the crops is solved, and the use of pesticides is avoided.

The invention discloses a low-noise air filter, which comprises an upper casing provided with an air outlet, wherein the periphery of a filtering element is fixed in a filtering cavity through a fixing device; the fixing device comprises a vibration cabin and an elastic skirt edge; in the filtering cavity, a silencing plate is arranged above the filtering element; one end of the silencing plate is fixedly connected onto the wall surface of one side of the upper casing to form a fixed end; a gap is formed between the other end of the silencing plate and the wall surface of the other side to form a cantilever end of the silencing plate; an air outlet is formed above the fixing end. The silencing plate is arranged above the filtering element, i.e., a helmholtz resonator is arranged in an air outlet position; the influence of a guide sheet is eliminated; the filtering purification efficiency of the air filter is favorably ensured; the noise reduction effect is obvious; meanwhile, the vibration cabin is fixedly arranged on the fixing device for fixing the filtering element, so that dust and sundries attached onto the filtering element can fall off; further, the dust clearing problem is solved; the use period of the filtering element is greatly prolonged.

The invention relates to a treatment process for high-grade road surface crack. Said treatment process includes the following steps: cutting seam in the crack of broken slab, cut depth is 2-3 cm and the width of the seam is 4-5 mm, removing foul from interior of the seam, cleaning boundary to be bonded by using pressure water, drying interior of seam, injecting bonding agent and trowelling.

The invention relates to the field of traditional Chinese medicines, and in particular relates to use of madder in preparation of a nitrite scavenging agent. The nitrite scavenging agent has higher scavenging capability on nitrite and can be further developed to reduce the cancer morbidity of people smoking for a long time (smoking promotes a cancerogenic substance, namely tobacco specific N-nitrite, to be secreted into a bile duct) or other crowds having high nitrite intake, and as a food, a health-care food or a medicament aiming at nitrite poisoning; and the nitrite scavenging capability is far beyond that of vitamin C.

The invention relates to the field of traditional Chinese medicines, and in particular relates to an application of evening primrose stems and leaves in preparing a nitrite scavenging agent. The nitrite scavenging agent of the evening primrose stems and leaves has a relatively strong scavenging capacity on nitrite, and the scavenging agent can be further developed as food, health food or a medicine for reducing cancer incidence and for controlling nitrite poisoning in people smoking for a long term (the secretion of a cancerogenic substance, namely tobacco specific N-nitrite, into bile duct can be promoted by smoking) or having high intake of other nitrites; and the scavenging capacity on the nitrite is equal to that of vitamin C.