38results about How to "Increase dosage" patented technology

The invention provides an epoxy modified cement-based material, the epoxy modified cement-based material comprises an organic phase structure and inorganic crystals, and the inorganic crystals are radially distributed on the surface of the organic phase structure; the organic phase structure is a spherical or sphere-like structure with the diameter of 3-15 microns; the inorganic crystal is of a needle-shaped, rod-shaped or sheet-shaped structure with the length being 0.3-3 microns and the diameter being 0.05-0.5 microns. The epoxy modified cement-based material disclosed by the invention shows good adhesion and dispersion resistance under water or in a humid environment, can realize rapid underwater construction, and keeps stable performance for a long time under harsh conditions such as a marine environment and a humid environment; the engineering requirements of multiple fields such as building structure repairing, underwater repairing, rapid first-aid repair, ocean protection and road and bridge engineering are met, and the integration of high strength, high toughness, strong interface bonding and long-acting durability is realized.

The application relates to the field of vacuum aluminum-plated paper processing and specifically discloses a dry-wet compounding process for vacuum aluminum-plated paper. The dry-wet compounding process for vacuum aluminum-plated paper comprises the following preparation steps: S1, coating a bottom adhesive on a film, and heat setting one side of the bottom adhesive close to the film; S2, compounding the heat-set bottom adhesive with base paper, curing the bottom adhesive, and forming a bottom coating layer on the surface of the base paper; S3, vacuum aluminum plating on the side of the bottom coating layer away from the base paper to form a vacuum aluminum-plated layer; and S4, coating a surface adhesive on the side of the vacuum aluminum-plated layer away from the bottom coating layer, curing to form a surface coating layer, and obtaining vacuum aluminum-plated composite paper. The dry-wet compounding process can improve the amount of the bottom adhesive without causing overflow of the bottom adhesive, improve the folding resistance of the obtained vacuum aluminum-plated paper, and solve the color explosion problem.

This invention relates to the field of road engineering technology, and more particularly to a multi-objective performance coupling design method for warm-mix synchronously recycled SBS modified asphalt. The method determines the aging degree of aged SBS modified asphalt through testing, and accordingly determines the optimal dosage of the two-component synchronous recycling agent and the warm-mix agent. Subsequently, a diffusion model and a fusion degree calculation model for new and old SBS modified asphalt are established to quantitatively analyze the fusion degree of new and old asphalt under different temperatures and aged asphalt dosages. Based on this, a fusion degree spectrum is constructed, and by defining thresholds for each performance index, a feasible design scheme range for balanced performance is obtained, thereby determining the optimal mixing temperature and the maximum dosage of aged SBS modified asphalt. This invention can quickly determine the maximum allowable dosage of aged SBS modified asphalt and its corresponding optimal mixing temperature while considering multiple performance objectives, providing a reliable theoretical basis for the durability design of high-performance recycled SBS modified asphalt pavements.

This invention belongs to the field of blast furnace carbon emission reduction technology and discloses a blast furnace carbon emission reduction ironmaking system and method, including: oxygen-enriched ironmaking with the participation of a mixed reaction gas with high CO2 concentration. Due to the use of CO2 in the blast furnace blast and pulverized coal carrier gas, the oxygen enrichment rate is increased, and the amount of biochar is increased, thereby improving the smelting intensity of the blast furnace, increasing the proportion of pulverized coal replacing coke (increasing the coal ratio and decreasing the coke ratio), reducing ironmaking costs, and reducing carbon emissions. Furthermore, due to the use of CO2 injection and oxygen-enriched ironmaking operations, the amount of air incorporated into the mixed reaction gas is reduced, increasing the concentration of CO and CO2 in the blast furnace gas, which is beneficial for subsequent capture, separation, purification, and resource utilization of different components in the blast furnace gas.

The application discloses an anti-erosion auxiliary gel material and a preparation method and application thereof. The preparation method of the anti-erosion auxiliary gel material comprises the following steps: 1) mixing regenerated red brick powder with a particle size of 3-10 microns, waste concrete regenerated micro powder with a particle size of less than 10 microns and water to perform a pre-hydration reaction, and then separating a solid product to obtain pre-hydration regenerated powder; 2) calcining the pre-hydration regenerated powder, and then rapidly cooling to room temperature and performing grinding to obtain active regenerated powder; and 3) uniformly mixing the regenerated red brick powder with a particle size of less than 3 microns and the active regenerated powder to obtain the anti-erosion auxiliary gel material. The anti-erosion auxiliary gel material can be added in a large amount in concrete, can effectively improve the anti-Cl ‑ erosion performance of the concrete, does not affect the mechanical properties of the concrete, and is suitable for large-scale industrialized production and application.

The utility model discloses a two-way prestress weight reduction assembly type composite floor slab system. The two-way prestress weight reduction assembly type composite floor slab system comprises a pre-tensioning prestress prefabricated concrete bottom plate, weight reduction blocks, cast-in-place concrete ribs and post-tensioning prestress steel bars. Longitudinal prestressed load-bearing steel bars and transverse distribution steel bars are arranged in the pre-tensioned prestressed precast concrete bottom plate. A concrete reinforcing rib or a steel truss reinforcing rib or a steel and concrete combined structure reinforcing rib is arranged on the concrete bottom plate; the weight reducing blocks are laid on the pre-tensioned pre-stressed precast concrete bottom plate, and the weight reducing blocks are spaced by a certain distance. A plurality of pre-tensioned pre-stressed precast concrete bottom plates are assembled together, and concrete ribs are formed after the weight reducing blocks are cast in place. The prestressed steel bars are post-tensioned in the concrete ribs, and after the concrete reaches the strength, the steel bars are tensioned to form post-tensioned prestressing force to form bonded or unbonded prestressing force. According to the utility model, the bidirectional rigidity of the floor system is consistent, the bidirectional force transmission performance and the bidirectional anti-cracking effect are better, the integrity of the floor system is better, and more steel materials are saved.

This invention discloses an industrial production method for cement clinker that co-processes heavy metal-containing waste, comprising: raw meal preparation: raw meal is prepared according to the following proportions by weight: 84-87 wt% calcareous raw materials, 6.0-7.2 wt% clayey raw materials, 4.8-5.8 wt% corrective raw materials, and 2.0-4.5 wt% heavy metal-containing waste; addition of composite synergist: a heavy metal adsorption-mineralization composite synergist is added to the raw meal; pre-decomposition: the homogenized raw meal is preheated by a multi-stage cyclone preheater and then enters a decomposition furnace for carbonate decomposition; clinker calcination: the decomposed raw meal enters a rotary kiln and is calcined at 1350-1450℃ to form clinker; and rapid cooling of clinker: the calcined clinker is rapidly cooled to room temperature by a grate cooler to obtain finished cement clinker. This invention can achieve a total solidification rate of heavy metals in clinker of 93%, and increase the retention of Pb, Cd and Zn by 13.9 times, 59.1% and 11.5% respectively, and increase the 28-day compressive strength to 61.8 MPa.

The application provides a kind of green low carbon cementitious material and its preparation method, belong to building material technical field.The application first carries out pretreatment to converter slag to obtain superfine converter slag, so as to improve the activity and fluidity of converter slag;By compounding sodium hydroxide, liquid water glass and sodium chloride as alkali activator as alkali activator, so as to improve the early and late compressive strength of concrete obtained by replacing cement with green low carbon cementitious material;The application can further improve the green low carbon cementitious material by adding emulsified asphalt and PE fiber in the raw material, so as to realize the increase of the amount of green low carbon cementitious material that can replace cement.

The invention provides a paper product, modified light calcium carbonate and a preparation method thereof. The preparation method of the modified light calcium carbonate comprises the following steps: carrying out surface charge modification treatment on light calcium carbonate; carrying out micro-polymerization treatment on the light calcium carbonate subjected to surface charge modification treatment; and carrying out pre-flocculation treatment on the light calcium carbonate subjected to micro-polymerization treatment. According to the preparation method of the modified light calcium carbonate provided by the embodiment of the invention, the light calcium carbonate is firstly subjected to surface modification (charge adjustment), then subjected to micro-polymerization (specific surface area adjustment) and finally subjected to pre-flocculation (overall form optimization), the modified PCC filler can be added into paper pulp for papermaking, and under the condition that the addition amount of the PCC filler is increased, the specific surface area of the PCC filler is increased, and the overall form of the PCC filler is optimized. The water filtering performance of the pulp is ensured, the retention characteristic is not deteriorated, and considerable paper physical property strength, surface strength and sizing performance are maintained. And on the premise of ensuring the running performance of the paper machine, the paper making raw material cost is reduced while the same paper quality is achieved.

The invention belongs to the technical field of magnetic solid-phase extraction and analysis. The invention provides a method for quantitatively detecting bisphenol pollutants in traditional Chinese medicines for soil and roots based on a magnetic MOF (at) COF porous composite material combined with LC-MSMS. The method comprises the steps of preparation of the magnetic MOF (at) COF porous composite material, sample pretreatment and LC-MSMS detection and quantitative analysis. The magnetic MOF (COF) porous composite material disclosed by the invention has rich hierarchical pore structures and high specific surface area, not only retains regular pore channels and active sites of a metal organic framework (MOF), but also is connected with a covalent organic framework (COF), so that the stability of the material is greatly improved. Meanwhile, the material is mild in preparation condition, low in cost and excellent in adsorption performance. Compared with the existing method, the detection method provided by the invention has the advantages of more thorough extraction, lower detection limit, higher recovery rate, simpler operation and lower cost, and is suitable for two matrixes of soil and root system traditional Chinese medicines.

This invention discloses a pipe node connection assembly and an aquaculture cage, relating to the field of deep-sea aquaculture equipment technology. The pipe node connection assembly is applied to an aquaculture cage, which includes a central column and multiple edge columns. The pipe node connection assembly includes struts, spokes, and an elbow plate structure. Adjacent edge columns are connected by struts, with each edge column connected to two struts. The central column is connected to multiple edge columns via multiple spokes, with the spokes positioned between two struts on the same edge column. The elbow plate structure is fan-shaped and connected to the outer periphery of the edge columns. The elbow plate structure is positioned between the struts and spokes, with the radial sections on both sides of the elbow plate structure connected to the struts and spokes, respectively. This invention, through the coordinated arrangement and connection of the struts, spokes, and elbow plate structure, effectively enhances the connection strength and stress concentration resistance of key pipe nodes in the aquaculture cage, while reducing structural complexity and saving economic costs.

The utility model relates to the technical field of PCB (printed circuit board) processing, and discloses a water-saving recycling device which comprises a rack, the rack is provided with a pretreatment structure and an advanced treatment structure, the pretreatment structure comprises a wastewater primary treatment mechanism arranged at one end of the rack, and the pretreatment structure further comprises a wastewater primary treatment mechanism arranged on one side in the rack; the advanced treatment structure comprises a wastewater secondary treatment mechanism on the other side of the inner and outer ends of the rack, and further comprises a storage mechanism arranged at the other end of the rack. The advanced oxidation technology is introduced, the advanced oxidation technology can be adopted for organic pollutants difficult to remove, the ozone oxidation treatment tank is arranged, complex organic matters are decomposed into simple biodegradable substances, and the treatability of wastewater is improved.

The application belongs to the technical field of building coatings and relates to a styrene-acrylic emulsion, which comprises the following components in parts by mass: styrene 1-40 parts, butyl acrylate 1-30 parts, acid monomer 0.1-1 part, acrylamide 0.01-1 part, film-forming solvent 0.01-1 part, crosslinking agent 0.01-1 part, anionic emulsifier 0.1-2 parts, non-ionic emulsifier 0.1-2 parts, oxidizing agent 0.01-0.5 part, reducing agent 0.01-0.5 part, initiator 0.01-1 part, pH buffer 0.01-0.5 part, neutralizing agent 0.1-1 part, defoaming agent 0.02-1 part, preservative 0.02-1 part and water 44-56 parts. The application further provides a preparation method of the styrene-acrylic emulsion and application of the styrene-acrylic emulsion in interior wall coating. The interior wall coating prepared by using the styrene-acrylic emulsion does not need solvent, and the coating has excellent washability, low-temperature stability and wash resistance.

The present application relates to the technical field of 3D printing concrete, and discloses a preparation method of 3D printing concrete mixed with plant fibers, which comprises the following steps: step 1, soaking and drying the plant fibers treated with water glass in saturated limewater; step 2, blending the plant fibers with sulphoaluminate cement; step 3, preparing alkali-activated 3D printing concrete and pumping it by taking 30-50 parts of water glass, 20-40 parts of sodium hydroxide, 100-200 parts of limestone powder, 1000-1200 parts of sand, 100-200 parts of extra-fine sand, 400-500 parts of mineral powder, 50-150 parts of rice husk ash, 20-40 parts of hydroxypropyl methyl cellulose, 220-300 parts of water and 5-10 parts of water reducing agent according to mass fraction; step 4, forcibly stirring the concrete and adding the product obtained in step 2; and step 5, printing the concrete and spraying a setting agent between the concrete layers. The present application helps to improve the constructability of 3D printing concrete and reduce its shrinkage.

The invention discloses an anti-cracking cement stabilized macadam mixture for a plateau road and a preparation method of the anti-cracking cement stabilized macadam mixture. The anti-cracking cement stabilized macadam mixture is prepared from the following raw materials in parts by weight: 3-5 parts of anti-cracking cement, 40-60 parts of modified high-titanium slag macadam, 25-45 parts of modified high-titanium slag sand and 11-15 parts of mixing water. According to the cement stabilized macadam mixture disclosed by the invention, low shrinkage of a cement hydrated hardened body is realized by virtue of the anti-crack cement, and the problem of rapid water loss of a hydration system caused by high-air-pressure and strong-wind drying in a plateau is solved by utilizing the internal curing effect of the modified high-titanium slag macadam; the early freezing resistance of the system is improved by introducing an early-strength anti-freezing component calcium formate into the modified high-titanium slag sand, so that the drying shrinkage and temperature shrinkage of the cement stabilized macadam are integrally reduced, the freezing resistance is improved, the durability of the cement stabilized macadam in a harsh and complex environment of a plateau is improved, and the service life of the cement stabilized macadam is prolonged.

This invention discloses a method with a high proportion of supercage Na + This paper describes the application of exchange-site FAU molecular sieves for the adsorption and separation of fluorine-containing electron gases. The molecular sieve possesses the FAU molecular sieve configuration recognized by the International Zygotes Association (IZA), with a chemical composition molar ratio of Al₂O₃:mSiO₂:nNa₂O, where the molar ratio m of the oxide SiO₂ / Al₂O₃ ranges from 5 to 20. This molecular sieve is synthesized using an initial gel prepared from an organic template agent, water, silicon source, and aluminum source. FAU seed crystals are added, and the charge density of the organic template agent is adjusted. Different cage structures of the FAU molecular sieve are assembled. Furthermore, through mixing with a solid salt containing Na and solid-phase exchange, Na in the supercage is achieved. + Control of the exchange site ratio. Compared with the commercial molecular sieve USY2.6, this invention has a high proportion of supercage Na. + Exchange-site FAU molecular sieves can be used for the adsorption and separation of fluorine-containing electronic gases in gas-phase systems, especially pentafluorochloroethane C2F5Cl (R115) and hexafluoroethane C2F6 (R116), and the separation effect is good.

The application provides a method for detecting the redox capacity of a non-homogeneous aqueous medium under different potential conditions, and belongs to the technical field of electrochemical analysis. The method system uses a reticular titanium-based ruthenium iridium oxide coating electrode as a working electrode, improves the upper limit of the sample addition amount of the existing mediated electrochemical analysis system from the mg level to the g level, solves the representativeness problem of the sample in the test of the non-homogeneous aqueous medium, and improves the precision of the redox capacity analysis from mmol e ‑ / kg to μmol e ‑ / kg. By regulating the applied voltage of the working electrode and adding different electronic mediator substances, the test of the redox capacity of the non-homogeneous aqueous medium under different potential conditions can be realized. The method has high sensitivity and good accuracy, in addition, the titanium-based ruthenium iridium oxide coating electrode has strong corrosion resistance, low cost, is convenient to process, and is simple to maintain, and has a good practical application prospect.

The invention relates to the technical field of cosmetics, in particular to a composition for improving the stability of a glucan aqueous solution and application of the composition. On one hand, the invention provides a composition for improving the stability of a glucan aqueous solution. The composition is mainly prepared from 95-266.7 parts of glycerinum, 20-66.7 parts of disaccharide and / or a disaccharide derivative and 0.5-2 parts of sodium hyaluronate. The composition can effectively improve the stability of a water aqua product containing glucan under extreme conditions, has high compatibility with other water aqua systems, can be added into a formula according to any proportion, and is high in flexibility. The aqueous cosmetics prepared from the composition can be kept stable under the condition that other components are added, the preparation method is simple, and the composition can be applied to various aqueous products, such as moisturizer, toner, essence, facial masks, gel, gel, spray, disposable cosmetics and medical beauty products, so that moisturizing, repairing and soothing are better realized, and the skin care effect is good. And aging resistance and the like.

The application discloses a fixed fungus bed double-layer Gastrodia elata cultivation device and a cultivation method, relates to the technical field of Gastrodia elata cultivation, and comprises a cultivation installation part, wherein the cultivation installation part is used for double-layer cultivation of Gastrodia elata; a one-way isolation part is installed on the cultivation installation part; a limiting release part is installed on the cultivation installation part; a loose prompting part is installed at the bottom of the cultivation installation part; the loose prompting part is used for detecting soil looseness during cultivation; and an inclination control part is installed at the top of the cultivation installation part; the cultivation installation part can realize positioning of a wooden pile fungus bed base material and facilitate full utilization of the wooden pile fungus bed base material; and the problems that the current fixed fungus bed double-layer Gastrodia elata cultivation device is inconvenient to realize double-layer cultivation of seeds and seed blocks respectively and inconvenient to prompt soil layer loosening are solved.

The invention provides a cemented filling material with a large mixing amount of fly ash and high shear bearing capacity and a preparation method of the cemented filling material, and relates to the technical field of mine filling. The cemented filling material comprises the following raw materials in percentage by mass: 70-80% of a solid material and 20-30% of water, wherein the total mass of the raw materials is 100%; the solid material comprises the following components in parts by weight: 55-70 parts of fly ash, 2-5 parts of cement, 5-15 parts of slag, 2-5 parts of carbide slag, 21-35 parts of tailings, 0.1-1 part of a fiber material and 1-3 parts of a composite activator. The cementing filling material breaks through three aspects of improving the activity of the fly ash through synergistic excitation modification, optimizing the structure through aggregate particle gradient grading design and reducing performance fluctuation through intelligent process control, so that efficient activation excitation of the volcanic ash activity of the fly ash can be realized, the mixing amount of the fly ash is increased, and the cost of the filling material is reduced; the problem that an existing filling material is low in anti-shearing bearing capacity is solved.

The invention discloses a bridge expansion joint low-carbon quick-hardening early-strength repairing material and a construction method thereof, and belongs to the technical field of engineering construction. The low-carbon quick-hardening early-strength repairing material for the bridge expansion joint is prepared from the following raw materials in parts by weight: sulphoaluminate cement, Portland cement, calcined shell powder, fly ash and silica fume. Reinforced modified fibers, modified shell powder and a water reducing agent. By treating the shell powder and the reinforced fibers, the setting time and the initial strength maturation period of the concrete can be shortened, so that the construction speed and efficiency are improved, the repairing and reinforcing process of the bridge expansion joint is accelerated, the construction period is shortened, and the engineering cost is reduced. The low-carbon quick-hardening early-strength repairing material for the bridge expansion joint can improve the strength and durability of a repairing layer and effectively guarantee safe operation of a bridge, and meanwhile, quick-hardening construction can shorten the traffic interruption time and guarantee quick and normal traffic of a road.

This invention provides a siloxane ligand-protected Ag 40 Nanoclusters, their synthesis methods, and applications. This invention relates to Ag protected by siloxane ligands. 40 Nanoclusters are composed of RC≡C ‑ and (Ph 4 Si 4 O 8 ) 4‑ Ag protected by both ligands 40 Nanoclusters, with the molecular formula {Ag} 40 [(RC≡C) 8 (Ph 4 Si 4 O 8 ) 6 The silver nanoclusters synthesized in this invention have precise atoms and novel structures; the synthesis method is simple, easy to operate, mild under mild conditions, and the raw materials are readily available, making it potential for industrial and commercial production; the obtained silver nanoclusters exhibit superior fluorescence performance at low temperatures and have a long fluorescence lifetime, making them practically valuable in the field of fluorescent probes and worthy of market promotion.

The invention provides carbonized aggregate, a carbonized product with high carbonization depth and a preparation method of the carbonized aggregate, and belongs to the technical field of carbon sequestration building materials.The preparation method comprises the following steps that solid waste raw materials, cement, silica fume, a thickening agent, a water reducing agent and water are evenly mixed and subjected to pouring forming, and a green body is obtained; and drying the green body until the water content is 13-20%, and carbonizing and curing to obtain the high-connectivity artificial carbonized aggregate. And stacking a plurality of high-connectivity artificial carbonized aggregates in a mold in advance, pouring the slurry into the mold, maintaining at 25 DEG C for 24 hours, demolding, carrying out microwave pretreatment, and then carrying out carbonization maintenance to obtain the carbonized product. According to the method for constructing the continuous carbon dioxide transportation network by using the high-connectivity artificial carbonized aggregate and the preset aggregate technology, the light high-strength carbonized product with the high carbonization depth is prepared, the compressive strength can reach 39.23 MPa after the carbonized product is carbonized for 1 day, the density is 1711 kg / m < 3 >, the carbonization degree is 43.27%, the carbonization uniformity depth is 50 mm, the carbon fixation amount is 356.2 kg / m < 3 >, and the pre-curing time is 4 h.

The utility model discloses an additive supply mechanism for foamed asphalt. The additive supply mechanism comprises an additive water tank, a water inlet pipe, a plunger pump, an electromagnetic flowmeter, a water outlet pipe, an overflow valve and a water pressure gauge, the device has the advantages that water and an additive in a certain proportion are respectively added into the additive water tank from the water inlet cover and the additive inlet pipe; after mixing is completed, a first ball valve is opened, and a mixed solution of water and an additive is added into the warm mix asphalt foaming device through a water outlet pipe under the action of a plunger pump; the electromagnetic flowmeter can accurately control the addition amount; when the water pressure gauge detects that the pressure is too high, the overflow valve can be opened to enable the redundant mixed solution to flow back into the additive water tank through the water return pipe, so that resource waste is avoided, meanwhile, the use amount of the additive can be prevented from being too large, and the stable performance of the foamed asphalt is ensured. And the filter screen or the filter is selectively arranged, so that pipeline blockage is avoided, and the use stability of the equipment is improved.

The present application relates to the technical field of concrete, and particularly discloses a wear-resistant recycled asphalt concrete as well as a preparation method and application thereof.The wear-resistant recycled asphalt concrete provided by the present application significantly improves surface wear resistance and wear resistance by compounding raw materials, and can improve service life from multiple aspects such as high-temperature anti-rutting and low-temperature anti-cracking, and is suitable for high-wear areas such as urban intersections and bus lanes.The content of recycled asphalt pavement material is increased, and the consumption of primary resources is greatly reduced.Lignin hard carbon microspheres, hydroxyapatite and polyphosphate can form a ternary synergistic system, the lignin hard carbon microspheres can be used as micro-rolling balls to fill the voids of the mortar and bear shear stress, the hydroxyapatite can further enhance the wear resistance of the surface layer of the mixture, and the polyphosphate can break the long chain of carbonyl / sulfoxide groups in the aged asphalt in the RAP, and cooperates with the recycling agent to effectively activate the aged asphalt in the RAP and restore the rheological properties thereof.

The invention belongs to the technical field of building materials, and discloses low-carbon low-shrinkage lightweight concrete prepared on the basis of multi-source industrial solid wastes and a preparation method of the low-carbon low-shrinkage lightweight concrete. The low-carbon low-shrinkage lightweight concrete prepared on the basis of the multi-source industrial solid wastes is prepared from the following raw materials in parts by weight: 250 to 640 parts of cement, 150 to 250 parts of silica fume, 190 to 210 parts of fly ash microspheres, 260 to 650 parts of phosphorus slag, 1100 to 1300 parts of quartz sand, 10 to 15 parts of a de-foaming agent, 12 to 20 parts of a water reducing agent, 200 to 300 parts of water and 120 to 200 parts of fibers. According to the low-carbon low-shrinkage lightweight concrete prepared on the basis of the multi-source industrial solid waste, the synergistic utilization efficiency of the multi-source industrial solid waste can be remarkably improved, and high-value conversion of solid waste recycling is promoted; the comprehensive performance of low carbon, light weight and high strength can be considered, and the multiple performance requirements of modern structural materials are met.

The utility model discloses a kind of glass fiber screw rod shearing machines of preventing broken strip, related to glass fiber processing field, including machine body, the shearing screw rod is rotationally connected in machine body, the right side of the machine body is connected with the feeding hopper of flame retardant, the rear side of shearing screw rod is fixed with fixed frame by the second gear, and the fixed frame is extruded with the contact frame.This glass fiber screw rod shearing machine of preventing broken strip, in use process, by screw rod, keep enough shearing force, screw rod shearing is added relative sliding at the same time, so that fiber and additive material are fully mixed and then extruded and transported, cooperate distributed discharge port to reduce the problem of fiber and broken strip of die mouth, by setting the lateral feeding hopper of intercommunication, water vapor is greatly reduced from side feeding, side feeding difficult feeding problem is solved, can improve the amount of flame retardant in time, the glass fiber exported is also swung and blown while passing through water tank, to accelerate the cooling forming of glass fiber.

This invention belongs to the field of pharmaceutical technology and relates to a drug-excipient combined Senecio scandens swelling microneedle patch, its preparation method, and its application. This invention innovatively uses the extract of the traditional Chinese medicine Senecio scandens as the active ingredient, while utilizing its molecular properties to participate in the construction of the microneedle framework, realizing the design concept of "drug-excipient integration." Combined with cross-linking technology, the drug loading capacity of the microneedles in this invention can reach 40-45 wt%, greatly increasing the drug dosage per unit area patch and meeting the demand for high-dose drugs in the acute phase of Alzheimer's disease (AD). This invention forms a stable gel framework through physical and chemical dual cross-linking, giving the microneedles the characteristic of "swelling without dissolving." After drug administration, the water-absorbing and swollen matrix framework can be completely peeled off with the substrate, leaving no synthetic polymers in the body, greatly improving the safety of clinical use, and is especially suitable for patients with chronic skin diseases requiring long-term, repeated drug administration.

This invention presents a comprehensive evaluation method and application for mitigating microplastic toxicity in maize seedlings. It utilizes the biological concepts of relative mitigation effect index and absolute mitigation intensity coefficient for individual traits in maize seedlings affected by polystyrene (PS) microplastics, derived from the application of different concentrations of nano-zinc oxide (ZnONPs) / monolayer graphene (GO) solutions. This method scientifically, objectively, accurately, and comprehensively evaluates the overall mitigation effect and intensity of different concentrations of ZnONPs / GO solutions on PS microplastic toxicity in maize seedlings after 7 or 21 days of growth. Through comprehensive comparison, a scientific and efficient application method for mitigating PS microplastic toxicity in maize seedlings using ZnONPs / GO solution treatment is proposed. This invention is simple to operate, requires small amounts of ZnONPs / GO, is economical and practical, does not pollute the environment, and has a good overall mitigation effect on microplastic toxicity in maize seedlings, showing great potential for application in green, efficient, and clean maize production.

The invention discloses an application of a bacterial strain in production of an external product for improving the micro-ecology of the vagina of a human body, and the bacterial strain is Lactobacillus crispatus SPR002 and has 16S rDNA (ribosomal deoxyribonucleic acid) as shown in SEQ ID NO.1. The invention also discloses an application of the bacterial strain in production of the external product for improving the micro-ecology of the vagina of the human body. The strain produces H2O2 and only produces D-lactic acid, and no drug-resistant gene is found; the external product is suitable for improving changes, caused by vaginal pathogenic bacteria, of micro-ecology of the vagina of the human body. When the strain concentration is 1 * 10 < 7 > CFU / mL, the strain SPR002 provided by the invention can generate a strong bacteriostatic effect on staphylococcus aureus, and the bacteriostatic rate reaches 98.15%; the bacteriostasis rate of the bacterial strain SPR002 to candida albicans can be obviously improved along with the increase of the concentration of the bacterial strain SPR002, and when the concentration of the bacterial strain is 3 * 10 < 8 > CFU / mL, the bacteriostasis rate of the bacterial strain SPR002 to candida albicans reaches 97.1%. Compared with other Lactobacillus crispatus of the same type, the strain SPR002 provided by the invention can generate a relatively strong inhibition effect on Candida albicans along with the increase of the concentration, so that the strain SPR002 provided by the invention can be developed into a medicine product, and the dosage of the medicine is appropriately increased according to the condition of a patient.