63results about How to "Antibacterial good" patented technology

The invention discloses a fresh keeping agent containing essential oil, for fruits, and an application. The fresh keeping agent for fruits is characterized by being compounded from lysozyme, tea polyphenols, nisin, essential oil A, essential oil B, Vc and distilled water in a certain proportion. According to the fresh keeping agent for fruits, disclosed by the invention, the essential oil is optimized to be used as a main component of the fresh keeping agent, so that the fresh keeping agent has excellent effects of bacteriostasis and oxidation resistance and is applied to corrosion resistance and fresh keeping of the fruits, the fresh keeping and storage period of the fruits can be greatly prolonged, the fruits are guaranteed to maintain original quality in the fresh keeping period, and the quality of the fruits is effectively guaranteed. The fresh keeping agent for the fruits, disclosed by the invention is simple in compounding method, and convenient to apply; and the fresh keeping agent is completely compounded from natural components, and harmful chemical substances are not added, so that the fresh keeping agent is safe and environmental-friendly, and has an important industrial value.

The invention relates a preparation method of an inorganic-organic hybrid antibacterial agent with antibacterial and hydrophobic functions and application of the antibacterial agent in a polymer material matrix. The antibacterial agent overcomes the problem in the prior art that the antibacterial performance of a natural antibacterial agent cannot completely meet the demands of users when being used alone. Specifically, the antibacterial agent adopts an amino-containing coupling agent as a bridge, and antibacterial inorganic nanoparticles such as titanium dioxide and zinc oxide are coated withantibacterial aldehydes such as organic citral and cinnamaldehyde to form the inorganic-organic hybrid antibacterial agent. The inorganic-organic hybrid antibacterial agent can be widely applied to polymer materials such as PP and ABS and achieve an antibacterial and hydrophobic effect; the antibacterial rate of the antibacterial agent for gram-negative bacteria such as escherichia coli can reach99.9%, the antibacterial rate of the antibacterial agent for gram-positive bacteria such as staphylococcus aureus can reach 99.9%, the antibacterial rate of the antibacterial agent for aspergillus niger and other molds can reach 0 grade, and the contact angle between the material surface and water can reach 120 degrees. Meanwhile, the antibacterial polymer material maintains the great mechanicalproperty.

The invention relates to an environment-friendly plastic foamed sheet with antistatic and flame-retardant functions and a manufacturing technique thereof. The manufacturing technique comprises the following steps: preparing bamboo carbon powder, kaolin, plastic, antistatic agent, flame retardant and other chemical assistants, banburying, mixing, discharging from a guillotine to obtain a sheet semi-finished product, and foaming to form with a foaming machine. The plastic foamed sheet is prepared from the following raw materials in parts by mass: 5.5-6 parts of plastic, 1.0-1.5 parts of bamboo carbon powder, 1.5-3.5 parts of kaolin, 1.0-2.5 parts of antistatic agent, 1.5-3.5 parts of flame retardant and 0.5-1.0 part of chemical assistants. The manufacturing technique produces the plastic foamed sheet with high-standard antistatic and flame-retardant functions, overcomes the defects and shortcomings in the prior art, has important and profound significance for solving the problems above, and has very wide market potential.

The invention discloses a high-quality chrysanthemum flower planting method. The planting method includes the following steps of preparing chrysanthemum flower cutting seedlings, preprocessing the cutting seedlings, transplanting and field planting of the cutting seedlings and management after field planting. Special culture and preprocessing are carried out on the cutting seedlings, the constitution features of the cutting seedlings are improved well, the arch yield of chrysanthemum flowers is increased by 35-45%, the flavonoid content in the chrysanthemum flowers is increased by 30-35%, the chlorogenic acid content is increased by 25-35%, the number of flower heads per plant is increased, and the chrysanthemum flowers have high ornamental value and medicinal value.

The invention discloses a tilapia mossambica streptococcicosis resistant traditional Chinese herbal medicine preparation and a preparation process thereof. The traditional Chinese herbal medicine preparation is prepared from the following raw materials in parts by weight: 10-25 parts of scutellaria baicalensis, 10-25 parts of fructus forsythia, 10-25 parts of rheum officinale and 10-25 parts of dioscorea bulbifer. The preparation process comprises the following steps: weighing the raw material medicines according to formula weights, adding distilled water which is 20 times the total weight ofthe raw material medicines, and performing water bath for three times at 100 DEG C, and concentrating, thereby obtaining the traditional Chinese herbal medicine preparation, wherein the water bath lasts for one hour each time, and the alcohol precipitation concentration is 60%. The traditional Chinese herbal medicine preparation has the functions of clearing heat and removing toxins, preventing bacteria and preventing stress as well as regulating body immunity, the disease resistance of tilapia mossambica can be effectively improved, moreover the traditional Chinese herbal medicine preparationis low in medicine residue, medicine residue standard exceeding can be avoided, and drug resistance of pathogenic bacteria can be avoided; and besides, by adopting the preparation process disclosed by the invention, the contents of effective components of the tilapia mossambica streptococcicosis resistant traditional Chinese herbal medicine preparation can be effectively increased, so that the medicinal effect can be improved, the preparation process is simple, and the cost can be lowered.

The invention provides sustained release agricultural plastic mulch used for preventing and controlling bacterial wilt and a preparation method thereof. Garlic oil is injected among hydrotalcite layers by carrying out atomized spray, effective adsorption is formed, and hydrotalcites loaded with the garlic oil and a crosslinking agent are added into starch suspension, so that starch molecules are crosslinked and cured and coat the hydrotalcites loaded with the garlic oil inside, and sustained release capsules are obtained; and the sustained release capsules are mixed with matrix resin, and thenfilm blowing is carried out, so that the sustained release agricultural plastic mulch capable of preventing and controlling the bacterial wilt is obtained. The preparation method utilizes that a garlic oil sterilization layer can inhibit or alleviate bacterial wilt disease of multiple crops and has a good fungi-proofing effect, and the sustained release capsules have good compatibility with the matrix resin and are uniformly dispersed, so that the mulch has high strength and also has sustained release performance, sterilization time effect is long, and low cost and high efficiency are achieved in the whole preparation process.

The invention discloses a novel antibacterial and mildew-proof paint film. The paint film comprises, by mass, 50-90 parts of polyamino macromolecular quaternary ammonium salt, 1400-1550 parts of a component A and 50-90 parts of a component B, the component A comprises resin 601, dimethylbenzene, n-butyl alcohol and other fillers, the mass ratio of the dimethylbenzene to the n-butyl alcohol to theother fillers is 9: 2.25: 37, and the other fillers comprise titanium dioxide, barium sulfate, kaolin, mica powder and organic argil; and the component B is one or more of a T31 curing agent and a 651curing agent. A preparation method of the paint film is simple, convenient to operate, safe, environmentally friendly and suitable for industrial production, and the paint film has good antibacterialand mildew-resistant performance.

The invention discloses a chrysanthemum cuttage substrate which is composed of the following substances: garden soil, river sand, perlite, weathered coal, phosphorus slag, coco coir, modified olive residue and traditional Chinese medicine extracting solution. The cuttage substrate is wholly loose, the permeability is good, the air permeability is excellent, the water-retaining and fertilizer-retaining capability is high, the rooting rate of the chrysanthemum cuttings can reach more than 98%, the seedling cultivation period arrives 5-7 days early, the number of the adventitious roots is increased by more than 60% on year-year basis, and the cultivated cuttage seedling roots are well developed and vigorously grow, and the economic benefit is good.

The invention relates to the technical field of PVC modified materials, and in particular relates to a PVC modified material for a beach chair cloth and a preparation method thereof. The PVC modified material for the beach chair cloth is prepared from the following raw materials in parts by weight: 80-120 parts of PVC resin, 40-60 parts of a plasticizer, 3-7 parts of light calcium carbonate, 3-7 parts of a modifier, 2-4 parts of a stabilizer, 1-2 parts of a mould-proof agent, 0.6-1.0 part of a fungusproof agent, 0.5-1.5 parts of an anti-radiation agent, 0.3-0.7 part of an external lubricant and 0.2-0.4 part of an internal lubricant. The PVC modified material for the beach chair cloth has good mould-proof, fungusproof and anti-radiation effects, is environment-friendly and has excellent temperature resistance and weather resistance, high strength, excellent shock resistance, good flame retardant effect, excellent processability and excellent comprehensive performance.

The invention discloses an antibacterial rubber sole. The antibacterial rubber sole comprises an anti-slip layer, an interlayer and an antibacterial layer, and the anti-slip layer, the interlayer and the antibacterial layer are sequentially connected from outside to inside. The antibacterial layer is made from natural latex, nano titanium dioxide, zinc oxide, sulfur, sodium stearate, rubber nano active calcium carbonate serving as a filling agent, accelerant ZDC (zinc diethyldithiocarbamate), dispersant NF10, inhibitors, calcium carbonate and carbon black. Therefore the antibacterial rubber sole is excellent in antibacterial and antifungal performance, the antibacterial rate is up to 92% or more as for Escherichia coli, the antifungal level reaches to level 0, and the antibacterial rubber sole is excellent in slip resistance.

The invention discloses an automatic nursing rehabilitation bed for the department of cardiology. The automatic nursing rehabilitation bed comprises a bed plate; four supporting legs are symmetricallyand fixedly installed at the bottom of the bed plate; and a storage unit is arranged on one side of the upper portion of the bed plate and close to the long edge of the bed plate. According to the invention, nursing articles, a heart rate monitor, a blood oxygen monitor and first-aid equipment can be orderly placed in the storage unit; the tidy and concise automatic nursing rehabilitation bed notonly can improve the comfort level of a patient using the automatic nursing rehabilitation bed, but also can prevent the disorder of the automatic nursing rehabilitation bed, thereby preventing influence on the mood of a patient and nursing personnel; the automatic nursing rehabilitation bed has a function of automatically reminding the patient to take medicine on time, especially for elderly patients suffering from amnesia, the patients can be reminded to take medicine in time; meanwhile, the labor intensity of the nursing personnel is effectively reduced, different parts of the patient canbe massaged at different intensities, blood circulation of the patients is accelerated, and early rehabilitation of the patient is facilitated.

The invention discloses a blood drawing tube sorting device for hospital. The blood drawing tube sorting device comprises a supporting table, wherein a sorting unit, a conveying unit, a separating unit, two sets of active sorting units, a passive sorting unit and a control unit are arranged on the upper portion of the supporting table; and the conveying unit is arranged adjacent to the sorting unit, the separating unit is arranged between the conveying unit and the sorting unit, the two sets of active sorting units are arranged on the conveying unit, the passive sorting unit is arranged on theside, far away from the sorting unit, of the conveying unit, and the control unit is electrically connected with the sorting unit, the conveying unit, the separating unit and the two sets of active sorting units correspondingly. The blood drawing tube sorting device for hospital can be used for replacing manual blood drawing tube sorting, the labor intensity of medical workers can be reduced, andthe working efficiency can be improved; and more importantly, medical staff can be prevented from sorting blood drawing tubes wrongly when the medical staff are too busy, so as to ensure the processof blood examination of patients and avoid delaying the treatment for the patients.

The invention discloses an improved protein A immunosorbent column. The immunosorbent column comprises a connecting unit and protein A immunosorbent column bodies, wherein the connecting unit comprises a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe are horizontally arranged, and the liquid inlet pipe is positioned above the liquid outlet pipe; and two groups of protein A immunosorbent column bodies are arranged, the two groups of protein A immunosorbent column bodies are arranged in parallel, and the upper end of each group of protein A immunosorbent column body is communicated with the bottom of the liquid inlet pipe through a first connecting pipe. The immunosorbent column can realize a scheme of providing uninterrupted treatment for a patient, can greatly shorten the treatment time which originally needs to take 5 hours at one time to 2.5 hours, not only saves a large amount of time for the patient and medical personnel, but also can eliminate the hidden danger of sudden adverse reaction of the patient caused by long-time treatment, can avoid the problem that a filter element is easy to be installed in error during processing and production, and simultaneously effectively improves the production efficiency.

The invention discloses a disposable environmental-friendly paper freezing coffin, comprising a coffin body; the coffin body is made of a paper material; two sides of the coffin body are provided with cold air tubes; the cold air tubes are arranged and connected in an S-shape at two sides of the coffin body; refrigerating liquid is filled in the cold air tubes, wherein the cold air tube at one side of the coffin body is provided with a cold air tube connector. With adoption of the structure, the disposable environmental-friendly paper freezing coffin has a refrigeration function through the refrigerating liquid in the cold air tubes; and the disposable environmental-friendly paper freezing coffin has the characteristics of simple structure, convenience in manufacturing, light weight, low cost, good bacterial resistance and anti-corrosion, saved timbers, sanitation and environmental-friendliness.

The invention discloses an orthopedic robot. The orthopedic robot comprises a traveling part, a transferring part and a driving part, wherein the traveling part is in sliding connection with the transferring part, the driving part is in transmission connection with the traveling part, and the driving part is fixedly connected with the transferring part; the traveling part comprises a mounting plate, two sliding rails, four sliding blocks and four connecting rods; and the transferring part comprises a square outer shell, a storage hopper, a lifting device, two round sleeve rings, two round shafts and two supporting seats. According to the orthopedic robot, waste water and medical waste generated during an orthopedic operation can be automatically transferred, the problem that the waste water and medical waste which are generated in the orthopedic operation need to be manually poured by medical workers in a traditional way is solved, the possibility that hands are polluted in the processthat the medical workers pour out the waste water and the medical waste generated by the orthopedic operation can be effectively avoided, so that the hands of the medical workers are guaranteed to beclean and sanitary, the probability that orthopedic patients are infected in the operation can be effectively reduced, and the life safety of the orthopedic patients is guaranteed.

The invention discloses a urethral catheter used for a spinal cord injured patient. The catheter used for the spinal cord injured patient comprises a urine guiding part, a pressure sensing part and awearing part, the pressure sensing part is mounted on the urine guiding part, and the wearing part and the pressure sensing part are in communication connection. According to the urethral catheter used for the spinal cord injured patient, the pressure inside the catheter can be monitored in real time, a solenoid valve can be automatically controlled to be switched on, the urine in the bladder of the spinal cord injured patient can be promptly guided out, the pressure in the bladder of the spinal cord injured patient can be prevented from increasing effectively, and thus the urine in the bladder of the patient is prevented from flowing back to the kidney, then the renal failure of the spinal cord injured patient is prevented, and the life safety of the spinal cord injured patient is effectively ensured; when the spinal cord injured patient needs to go out to a social place, a red indicator light is used for alarming, and no sound is given out in the alarm mode, so that the privacy of the spinal cord injured patient in the social place can effectively protected; rehabilitation training of the patient's regular filling and regular emptying of the bladder according to the monitored pressure is convenient.

The invention discloses a dicumarol derivative as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) carrying out strain culture on decaisnea insignis endophytic fungus aspergillus tubingensis DS37 in a strain culture medium; (2) carrying out fermentation culture on a strain obtained by step (1) in a fermentation culture medium; then extracting for a plurality of times by utilizing petroleum ether, ethyl acetate and methanol; combining extracting solutions and filtering; recycling a mixed solvent and decompressing and concentrating filtrate to obtain crude extract; finally, carrying out silica-gel column chromatography to obtain the dicumarol derivative. The dicumarol derivative prepared by the invention has good effects of inhibiting pseudomonas aeruginosa, streptococcus lactis and alternaria alternata and can be used for agricultural prevention and control and pesticide prevention and control technologies; the dicumarol derivative has relatively strong activity of resisting A549, MCF-7 and HepG2 cell lines and provides possibility for developing anti-tumor medicines.

The invention discloses a pressure damage detector which comprises a cylindrical shell, a detection part is arranged at the bottom end of the cylindrical shell, a display part is arranged at the upperend of the cylindrical shell, and a control part is further arranged in the cylindrical shell. According to the invention, the damage depth of a pressure damage part of a patient can be detected, andthe surface color of the pressure damage part of the patient can be distinguished; and the data of the damage depth of the pressure damage part of the patient and the distinguishing data of the surface color of the pressure damage part of the patient can be displayed in real time, thus an accurate basis is provided for medical staff to diagnose the illness state of the patient, the medical staffcan conveniently judge the degree of the pressure damage of the patient, different treatment and nursing measures can be conveniently taken according to different damages, so that the rehabilitation time of the patient is shortened, detected and collected data of the detection part can be stored, deep analysis of the data in a later period is facilitated, medical staff can conveniently summarize work experience for pressure damage treatment, and an effective treatment means is provided for curing pressure damage diseases of the patient.

The invention relates to the technical field of medical instruments, in particular to a bleeding point detection system. The system comprises a bleeding point detection unit, a control unit, an alarmunit and a power supply unit, the control unit is electrically connected to the bleeding point detection unit, the alarm unit and the power supply unit are both electrically connected to the control unit, and the alarm unit is electrically connected to the power supply unit; and the bleeding point detection unit is used for monitoring the bleeding condition of a puncture position of a patient in real time and generating an electric signal to be uploaded to the control unit when the bleeding of a puncture position is monitored. The system can realize the purpose of monitoring the bleeding condition of the puncture position of the patient in real time, and can timely send an alarm sound to inform medical personnel to timely process the bleeding condition of the puncture position of the patient when the bleeding condition of the puncture position of the patient is monitored, thereby avoiding massive bleeding of the puncture position of the patient, further avoiding massive bleeding of thepatient. The system is firm in wearing, convenient to use, good in practicability and good in antibacterial performance.

The invention discloses a furanone derivative as well as an extraction method and application thereof. The extraction method comprises the following steps: extracting decaisnea insignis endophytic fungus DS37 secondary metabolic products with petroleum ether / ethyl acetate / methanol, combining extracting liquid, filtering, recovering the mixed solvent and performing reduced-pressure concentration toobtain a crude product extractum; placing the obtained crude product extractum on a silica gel chromatographic column, and performing elution with petroleum ether / ethyl acetate / methanol eluents withdifferent volume gradient to obtain four components, namely A to D; and putting the component B on the silica gel chromatographic column to obtain six components, namely B1 to B6, continuously puttingthe component B6 on the silica gel chromatographic column, performing elution with petroleum ether / ethyl acetate / methanol eluents with different volume gradient to obtain nine components, namely B6.1to B6.9, and recrystallizing the component B6.9 with methanol to obtain the furanone derivative. The furanone derivative is separated from the decaisnea insignis endophytic fungus DS37 secondary metabolic products; and the compound has high bacteriostatic activity.

The invention discloses a dental implant package which comprises an outer packaging box, an implant inner packaging bottle and a cover screw inner packaging bottle. The outer packaging box comprises a box body and a box cover. A first locating cavity and a second locating cavity are formed in the box body. The box cover and the box body are in interference fit and are in sealing connection. The first locating cavity is provided with a shock pad. The implant inner packaging bottle is arranged in the first locating cavity and comprises an implant bottle body and an implant bottle cover. The bottom end of the implant bottle body abuts against the shock pad. An elastic pad is arranged in the implant bottle body, and an implant is pressed between the elastic pad and the implant bottle cover. The cover screw inner packaging bottle is arranged in the second locating cavity. The implant and a cover screw are packaged in a sealed manner through the two inner packaging bottles, the two inner packaging bottles are sealed by the outer packaging box, and therefore the dental implant package can prevent bacteria and dampness well. The two inner packaging bottles are pressed in the outer packaging box, the implant inner packaging bottle is subjected to shock reduction through the shock pad, the implant is subjected to shock reduction through the elastic pad, and displacement can be effectively avoided.

The invention relates to a method for making grass clothroses. The method for making the grass clothroses comprises the steps of making petals, making leaves, making branches and leaves, cutting calyces and fixing. The process of the method for making thegrass clothroses is simple and easy to operate. The prepared grass clothroses have high simulation degrees, good shapes and crispness, stable structures without any industrial and chemical treatment, safety and environmental friendliness, and natural anti-corrosion, anti-bacterial and anti-mildew functions. The roses are used as themesand combined with the grass cloth to achieve good artistic values and preservation values.

The invention discloses a hypothermia therapeutic apparatus. The apparatus comprises a main body, the main body comprises a casing, a support plate is fixedly mounted inside the casing, a vertical plate is fixedly mounted between the upper portion of the support plate and the bottom of the inner top wall of the casing in the middle, a mounting slot is formed in the vertical plate, a semiconductorcooling fin is fixedly mounted on the inside of the mounting slot, a first aluminum alloy water tank is fixedly mounted between the upper portion of the support plate and the bottom of the inner top wall of the casing through two first fixing seats, a second aluminum alloy water tank is fixedly mounted between the upper portion of the support plate and the bottom of the inner top wall of the casing through two second fixing seats, and the side surface of the first aluminum alloy water tank is disposed in contact with a heat generating surface of the semiconductor cooling fin. The apparatus iscapable of quickly adjusting the water temperature and saving energy, is convenient to disassemble and assemble, has a more comprehensive and better cooling effect, avoids the disadvantage that a temperature probe of a conventional sub-hypothermia therapeutic apparatus is placed under the armpit and in the anus of a patient, and has long service life and good antibacterial effect.

The invention discloses a rehabilitation exercise device for the hand surgery department. The device comprises a first supporting plate, a thumb exercise rehabilitation unit and a hand supporting unit, wherein the thumb exercise rehabilitation unit is arranged at one side of the upper portion of the first supporting plate, and the hand supporting unit is arranged at the other side of the upper portion of the first supporting plate. The rehabilitation exercise device for the hand surgery department has the advantages that the structure is stable, the device is not damaged easily, the service life is long, the use is more convenient, the safety performance is better, the hand of a patient is not damaged easily, the device is designed for the thumb of the patient, the exercise effect is good,and the device fills in the current gap of a rehabilitation exercise device for the thumb of the patient, especially in the later rehabilitation of patient with a thumb fracture, the device can drivethe thumb of the patient to stir along with a cylindrical cylinder by taking the proximal joint of the thumb as the fulcrum, thereby achieving the flexibility of the thumb and the function sites of the joint of the thumb, and finally achieving the rehabilitation of the thumb of the patient.

The invention relates to an antibacterial deodorization mildewproof agent. The agent includes, in parts by mass, 5-9 parts of ferrous sulfate, 5-9 parts of borate, 2-5 parts of graphene, 2-4 parts ofnano silver powder, 1-3 parts of jasmine flower extract, 2-5 parts of chitosan and 20-22 parts of water. The agent has comprehensive functions, and is suitable for mildew prevention of food, furniture, wall paint and wall paper, has a good effect, long duration, low cost and an efficient and comprehensive anti-mildew technology, and can absorb moisture in moist air effectively so as to prevent mildew, sweep away dusty smell caused by mildew and achieve ventilation and damp proof; the antibacterial deodorization mildewproof agent also has excellent anti-bacterial and anti-fungal capacity and anti-bacterial anti-fungal durability at the same time, and has low toxicity and low production cost.

Discloses an synergistic antimicrobial composition containing a ginseng extract and a green tea extract in a weight ratio from 6:4 to 7:3 and an antimicrobial filter containing said composition and a method for manufacturing them. Said single filter exhibits higher antimicrobial and antiviral efficiency, has little pressure loss and could be produced at lower cost as compared with two systems containing two filters with single antimicrobial agent.

The invention discloses mesoporous modified polyurethane resin for an automotive interior trim and a preparation method of the mesoporous modified polyurethane resin. The mesoporous modified polyurethane resin comprises the following raw material components: a precursor, a silane coupling agent, phosphorous acid, 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, a novel flame retardant, diphenylmethane diisocyanate, ethylene glycol, 1,4-butanediol, polyester dihydric alcohol, toluene, N, N-dimethylformamide, a catalyst, methanol and ammonium bicarbonate, wherein the precursor is prepared from ammonium silicate, triethylene tetramine and a zinc ammonia complex through reaction, wherein the zinc ammonia complex is prepared from zinc sulfate, ammonia gas and reaction through reaction, and the novel flame retardant is prepared from oxalic acid, water and urea. According to the mesoporous material prepared by virtue of the preparation method, the mechanical strength of a polyurethane product can be increased, the surface functionality and the hydrophily of polyurethane can be improved, and meanwhile, polyurethane is endowed with excellent properties such as transparency, mold resistance, flame retardance, peel strength, thermal insulation, sound absorption and the like.

The invention discloses a sorting device realizing concentrated treatment of dismantling and draining for a dry powder can. The device comprises a bottom plate, four supporting legs, a first side plate, a second side plate, a front cover plate, a rear cover plate, a driving turnover unit, a dismantling and draining unit, a separating plate and a collecting hopper, wherein the four supporting legsare fixedly mounted at four corners of the bottom of the bottom plate in a symmetrically mode, and the first side plate and the second side plate are fixedly mounted on the two sides of the upper portion of the bottom plate correspondingly. According to the sorting device, the used dry power can can be treated without using manual operation, the working efficiency is effectively improved, and thethe working intensity is effectively reduced; the dismantled dry power can, dry power and water can be classified and collected for facilitating subsequent unified treatment; the residual quantity ofthe dry powder and water on the inner wall of the dry powder can can be effectively reduced, and the good treatment effect for the used dry power is achieved; and meanwhile, a prepared protective layer can prevent a large amount of residual dry powder and water being adhered to the inner surface of the collecting hopper, so that internal cleaning of the dry powder can is convenient, and cleaning can be carried out only by flushing with water.

The invention discloses a preparation method of a novel antibacterial and antifungal polyurethane paint film based on triethanolamine. The steps are: dissolving triethanolamine and halogenated alkanes in ethanol, reacting at 30°C to 80°C for 12h to 72h, and precipitating with a precipitating agent, Vacuum drying to obtain quaternized triethanolamine, quaternized triethanolamine and 2-ethyl-1,3-hexanediol, butyl acetate, dibutyltin dilaurate ultrasonically stirred under inert gas protection, heated to 50~60℃; add 1,6-hexamethylene diisocyanate and butyl acetate into the above solution, heat to 65~85℃, react for 3~6 hours to obtain antibacterial polyurethane coating; brush polyurethane on the surface of the substrate, and dry naturally film forming. The invention has good antibacterial and mold performance, better solvent resistance and mechanical performance of the paint film, simple preparation method, convenient operation, safety and environmental protection, and is suitable for industrial production.

The invention discloses a lactone compound and its extraction method and application. The cat feces endophytic fungus DS37 secondary metabolites are extracted with petroleum ether / ethyl acetate / methanol, the extracts are combined and filtered, and the mixed solvent is recovered , concentrated under reduced pressure to obtain the crude product extract; the crude product extract is placed on a silica gel chromatographic column, and is eluted with petroleum ether / ethyl acetate / methanol eluents with different volume gradients to obtain four components A-D; B component extract is on the silica gel chromatographic column, eluted with petroleum ether / ethyl acetate eluent with different volume gradients to obtain six components B1-B6, B4 component continues on the silica gel chromatographic column, with different Volume gradient petroleum ether / ethyl acetate eluent was eluted to obtain thirteen components of B4.1-B4.13, and B4.10 components were separated by hydroxypropyl sephadex column chromatography to obtain the inner Esters. The invention separates the lactone compound from the secondary metabolite of the endophytic fungus DS37 in cat feces, and the compound has good antibacterial activity and antitumor activity.