240results about How to "Improve bleeding" patented technology

An expandable arrow broadhead used for releasable attachment to one end of a hollow arrow shaft. The broadhead includes a sliding shaft with a pointed tip and tip base having two or more of cutting blades mounted thereon. Each of the blades includes an outer cutting edge and an inner edge. A portion of the sliding shaft is slidably received inside a hollow collar. The collar is attached to a sliding shaft housing. The sliding shaft housing is attached to an arrow shaft insert. The arrow shaft insert is adapted for receipt inside one end of the arrow shaft. In a retracted position, the blades are disposed next to and parallel to the length of the sliding shaft. When the pointed tip engages a target, the sliding shaft moves inwardly and rearwardly sliding inside the collar and inside a sliding shaft bore hole in the sliding shaft housing. As the sliding shaft moves rearwardly, a beveled cam surface of the blades engages a portion of the collar, which moves the blades outwardly into an extended position.

The invention discloses a mud-proof slump-retaining type polycarboxylate superplasticizer with low shrinkage and high adaptability and a low-temperature preparation method thereof. The polycarboxylatesuperplasticizer is mainly prepared by the following steps: carrying out free radical polymerization on 4-hydroxybutylvinyl polyoxyethylene ether, unsaturated carboxylic acid, an unsaturated amide-type monomer, dipolyethylene glycol maleate, an unsaturated quaternary ammonium cationic monomer, an oxidizing agent, a catalyst, a reducing agent, a chain transfer agent and deionized water at 5-15 DEGC through an aqueous solution, regulating pH value by adding a sodium hydroxide solution, and supplementing water. The preparation method of the invention has advantages of low-temperature production, no heat source, simple equipment, no pollution, short reaction time and high production efficiency. The prepared mud-proof slump-retaining type polycarboxylate superplasticizer endows concrete withgood workability, good adaptability, low shrinkage and high strength, has excellent mud-proof slump-retaining property, and greatly reduces construction difficulty.

The invention discloses a mining foam paste filling material prepared by utilizing a synergistic foaming method and a preparation method thereof, which are widely suitable for filling of coal mine gob areas, closure of laneways and construction of underground firewalls. The filling material comprises a component A and a component B, wherein the component A comprises an active component, a fine aggregate, a mineral foaming agent, an activating agent, a coagulant and the like; and the component B comprises a foaming agent, a foam stabilizing agent, a water reducing agent and the like. The key point is as follows: after fly ash is activated, the fly ash can be used for replacing part of cement for being used as a cementing material; and in addition, a concrete foaming technology is applied to the filling material, and the mineral foaming agent is innovatively applied to work in coordination with a concrete foaming agent for foaming, so that the foaming expansion performance, pumping performance and anti-seepage performance of the filling material are improved on the original basis, a gob area with a larger space can be filled under the condition of low cement consumption, and low consumption, environmental friendliness, energy conservation and easiness in pumping are realized.

This multi-bladed scalpel addresses the problem of making many small incisions in very close proximity (as close as 0.030'' / 0.75 mm) to each other, to facilitate hair transplantation. With this device, it is possible to make multiple incisions in such proximity. With the blades mounted parallel to each other, at the desired spacing, each incision does not intersect neighboring incisions, so the follicles placed in each incision will be surrounded by the maximum amount of undisturbed tissue to promote revascularization-capillary growth to provide a blood supply to each transplanted follicle. CNC machining techniques are used to create the blade holders with blade mounting sites created at the desired proximity. Medical grade epoxy is used to mount the blades, which are mounted parallel to each other. Holes are drilled so the tips of the blade group are located in a plane at an angle with respect to the blade holder for ergonomic reasons

The invention relates to biological complex enzyme toothpaste and a preparation method thereof. The toothpaste is prepared from the following components by weight percentage: 5-10% of sorbierite, 15-20% of hydrous silica, 10-20% of aluminum hydroxide, 10-20% of glycerin, 2-3% of sodium lauroyl sarcosine, 1-1.3% of flavor, 0.8-1.2% of cellulose gum, 0.3-0.6% of carrageenin, 0.3-0.5% of droxyethylcellulose, 0.5-1.2% of sodium phytate, 0.15-0.3% of saccharin sodium, 0.3-0.5% of strontium chloride, 0.1-0.3% of trisodium phosphate, 0.00003-0.00008% of staphylococcus lysozyme, 0.00005-0.00015% of muramidase, 0.00001-0.00004% of proteolytic enzyme, 0.00002-0.00005% of glycosidic hydrolase, 0.00002-0.00005% of peroxydase, 0.08-0.15% of borneol, 0.1-0.15% of borax, 0.08-0.1% of vermilion, 0.1-0.15% of natrii sulfas exsiccatus, 0.05-0.1% of triclosan, 0.1-0.4% of allantoin, and the balance of water. The total weight percentage of the components is 100%. The biological complex enzyme toothpaste has complete function.

The inkjet recording apparatus comprises: a head which ejects ink droplets of light-curable ink to a print medium to form an image on the print medium; a light irradiating device which is located at a downstream side of the head, and irradiates light from a light source onto the ink droplets immediately after the ink droplets have been deposited on the print medium; and a control device which controls the light irradiating device in such a manner that luminous energy irradiated onto a region of the print medium where bleeding of the ink droplets would be conspicuous is greater than luminous energy irradiated onto another region of the print medium.

The invention discloses a preparation method of a concrete thickener. The preparation method of the concrete thickener comprises subjecting small unsaturated amide monomers, small unsaturated hydroxyl-ester monomers and small unsaturated sulfoacid monomers to aqueous phase radical polymerization under the combined action of a redox system composed of initiating agent and reducing agent to obtain polymerized products; adjusting the PH of the polymerized products to be 6-7; adding water into the polymerized water to obtain the concrete thickener at a concentration of 3-10wt%. According to the preparation method of the concrete thickener, the product performance can be adjusted by controlling the molecular weight of the polymerized products, so that high reaction velocity can be obtained, organic solvent can be omitted, and being non-toxic and pollution-free and simple in operation can be achieved. The concrete thickener prepared through the method can avoid segregation under the premise of achieving high water retention, thereby guaranteeing the slump resisting performance of concrete and achieving stable product performance.

The invention discloses a preparation method of a water retaining agent. The preparation method comprises the following steps: carrying out an aqueous phase radical polymerization reaction on unsaturated amide micro-monomers, unsaturated sulphonic acid micro-monomers and unsaturated polyether macromers or unsaturated ester macromonomers under the coaction of an oxidation-reduction system composed of an initiator and a reducing agent to obtain a copolymerization product, regulating the pH value to 6-7 after the reaction, and adding water to obtain the water retaining agent with mass concentration of 1-60%. The preparation method disclosed by the invention is used for adjusting the product properties by controlling the monomer proportion, the temperature and the dosage of the initiator and the reducing agent, the reaction speed is high, the efficiency is high, no organic solvent is used, no toxin or pollution is generated, and the operation is simple. The unsaturated macromonomers are introduced into the prepared concrete / mortar water retaining agent to ensure excellent water retaining property and obviously perfect such stirring states of the concrete / mortar as bleeding / separation and the like without generating such adverse effects as strength and the like, meanwhile, the water retaining agent can be compounded with a polycarboxylic acid water reducing agent at any proportion to ensure good intermiscibility. The product performance is stable.

A method of inhibiting the adverse effects of complement pathway, activation products in a subject comprising administering to the subject an amount of Dextran Sulfate effective to inhibit formation of alternative complement pathway activation product.

The invention discloses a cement plate composite modifier, and belongs to the field of composite modifier production. The composite modifier is composed of a hardening agent, an early strength agent, an accelerator, a water-retaining agent, a water reducer, a water repellent, and polymer. Compared with the prior art, the provided composite modifier can solve the problems that the demoulding strength of cement plate is low, the setting time is long, the cement plate secretes water, and the cement plate is brittle; moreover, the modifier can avoid or reduce the risk that the steel bars are corroded by chlorine ions and sulfate ions; at the same time, the activity of low-calcium fly ash is effective excited, a scheme is provided for the large mixing amount utilization of low-calcium fly ash, and the product cost is reduced.

The present invention provides a polyacetal resin composition having excellent processability and stability, significantly suppressing the amount of formaldehyde generated from the molded article thereof, and preventing the bleeding of blending components. Specifically, to 100 parts by weight of (A) a polyacetal copolymer in which the amount of hemiformal terminal group is 1.0 mmol / kg or less, the amount of formyl terminal group is 0.5 mmol / kg or less, and the amount of unstable terminal group is 0.5% by weight or less, there are added: 0.01 to 3 parts by weight of (B) a hindered phenol-based antioxidant; 0.01 to 1 part by weight of (C) a hydrazide compound; and 0.01 to 1 part by weight of a compound selected from (D) an isocyanate compound, an isothiocyanate compound, and a modified compound thereof.

The invention discloses a plastic stabilizer for wet-mixed mortar. The plastic stabilizer comprises the following components in parts by weight: 0.1-5 parts of a water retention agent, 0.1-5 parts of an air entraining agent, 0.1-1 part of a defoaming agent, 0.01-1 part of water soluble polysaccharide, 1-10 parts of a special effect retarder, 1-10 parts of a water reducing agent and 68-98 parts of water. The plastic stabilizer for the wet-mixed mortar, provided by the invention, is liquid, is beneficial for automatic feeding and metering, and overcomes the defects that most mortar additives on the market are solid powder products and cannot realize automatic metering. Meanwhile, the water retention rate of the plastic stabilizer for the wet-mixed mortar, provided by the invention, can reach 98%, so that the setting time of the mortar can be deferred to 10-72 hours.

The present invention belongs to the field of concrete preparation, and specifically relates to preparation of a concrete by using granite powder as a major mineral admixture. Granite powder or fly ash is employed to substitute natural sand or cement in the concrete, wherein the substitution rate of granite powder is 5-17.5 wt%, and the substitution rate of fly ash is 0-17.5 wt%, can significantly improve workability and bleeding performance if the fresh concrete, and has good compatibility with additives, so as to benefit the construction of commercial concrete.

The invention discloses a crosslinking-type low-sensitivity ester-ether copolymerized polycarboxylate superplasticizer and a preparation method thereof. The crosslinking-type low-sensitivity ester-ether copolymerized polycarboxylate superplasticizer has the number-average molecular weight of 10000-100000 and has a structural formula as shown in the specification. Under the synergistic effect of various groups, the polycarboxylate superplasticizer formed by copolymerization of 4-hydroxybutyl-vinyl polyoxyethylene ether, unsaturated acid, unsaturated phosphomonoester and unsaturated phosphodiester has the advantages of high water-reducing rate, high slump loss resistance, high peaceability, mud-resistant property and low dosage sensibility.

An expandable arrow broadhead used for releasable attachment to one end of a hollow arrow shaft. The broadhead includes a sliding shaft with a pointed tip and tip base having two or more of cutting blades mounted thereon. Each of the blades includes an outer cutting edge and an inner edge with a beveled cam surface and locking notch therein. A portion of the sliding shaft is slidably received inside a hollow collar. The collar is attached to a sliding shaft housing. The sliding shaft housing is attached to an arrow shaft insert. The arrow shaft insert is adapted for receipt inside one end of the arrow shaft. In a retracted position, the blades are disposed next to and parallel to the length of the sliding shaft. When the pointed tip engages a target, the sliding shaft moves inwardly and rearwardly sliding inside the collar and inside a sliding shaft bore hole in the sliding shaft housing. As the sliding shaft moves rearwardly, the beveled cam surface of the blades engages a portion of the collar, which moves the blades outwardly with locking notch securing the blades in an extended position.

A valve (10) has a valve body (16) with a longitudinal bore (17), a valve dome (18) connected to the valve body (16), an armature (19) received longitudinally movably in the valve dome (18), and a tappet (36) for transmitting an armature motion to a closing member (40) of a seat valve (41). The tappet (36) is guided with slight radial play over the entire length of the longitudinal bore (17) of the valve body (16) and is provided on its jacket side with at least two separate conduits (37). A valve chamber (31) of the valve (10) that contains the seat valve (41) communicates fluidically with the valve dome (18) through the conduits (37). Residual air in the valve dome (18) can be positively displaced through the conduits (37). The valve (10) can be used in hydraulic brake systems of motor vehicles.

The invention discloses anti-allergy toothpaste capable of achieving prevention and adjuvant treatment of stomach illness. The anti-allergy toothpaste comprises 40-50% of an abrasive, 10-30% of an excipient, 1-2% of a thickening agent, 0-1% of a wetting agent, 0.5-1.5% of essence, 1.5-2.5% of a foaming agent, 0.1-0.5% of a sweetening agent, 0.1-0.5% of a preservative, 0.1-2% of an antibacterial agent, 10-30% of antibacterial and / or stomach nourishing traditional Chinese medicine and the balance water. The anti-allergy toothpaste has the bacteriolytic function, the anti-infection function and the tissue repairing function, and has the killing and bacteriolytic effect on 400 or more bacteria. In addition, the anti-allergy toothpaste further has the effects of resisting bacteria, resisting dental calculus, preventing tooth decay, obviously relieving gingival bleeding, relieving symptoms caused by gingivitis, relieving ozostomia and the like. The Chinese herbal medicine components can be excreted along with metabolism and is free of any side effect.

The invention discloses a benzene and ketone free high temperature resistant table printing ink. The benzene and ketone free high temperature resistant table printing ink comprises, by mass, 25-40 parts of a polyurethane resin, 10-15 parts of polyethylene vinyl acetate, 30-45 parts of an ester alcohol solvent, 0.6-1 part of propylene glycol methyl ether acetate, 5-15 parts of a pigment, 0.3-0.6 parts of a dispersant, 0.3-0.6 parts of polyethylene wax powder, 0.8-1.5 parts of an adhesion promoter, 0.8-1.5 parts of an antistatic agent, 5-10 parts of a delustering agent, 0.3-0.6 parts of an antifoaming agent, 0.3-0.8 parts of a high temperature resistant assistant, and 1-2 parts of a curing agent. The adoption of a double liquid design increases the hardness and the adhesion of an ink film, effectively prevents offsetting or ink falling, realizes excellent high temperature and boiling resistances, and increases the shelf life of the printing ink.

Disclosed herein is multiple filter controller comprising two filters; an inlet valve that regulates the directional inflow of a fluid through the filters; and an outlet valve that regulates the directional outflow of the fluid from the filters. Further disclosed is a method for maintaining a working fuel system comprising: passing the fuel through a first filter; monitoring an amount of pressure as the fuel passes through the first filter; detecting when the pressure has reached a predetermined level; redirecting the fuel from the first filter to a second filter when the predetermined level has been detected by manipulating an inlet valve such that the inlet valve stops the flow of the fluid to the first filter and redirects the flow of the fluid to a second filter; and repairing or removing the first filter from the fuel system while the fuel is simultaneously flowing through the second filter.

The invention discloses a preparation method of a natural active substance constructed polymer composite medicine and application thereof in inhibiting angiogenesis. The polymer composite medicine is formed by introducing natural active small molecule substances on carboxyl of heparin or derivatives thereof by a chemical coupling method. According to the polymer composite medicine, the dissolubility of the natural active small molecule substances can be improved, the toxic and side effects are reduced, the problem of bleeding after the heparin or derivatives thereof are massively used can be improved, and the effect of inhibiting angiogenesis when the heparin or derivatives thereof are used independently can be reinforced. The polymer composite medicine is simple in preparation process, easy to operate, can reduce cost and improve efficiency, and can easily realize industrialization.

The invention discloses a high-water-retaining-property shield construction premixed synchronous grout material which comprises cement, coal ash, admixture, bentonite, fine sand, additives and water. The additives mainly comprise non-ionic cellulose ether, carbohydrate, polycarboxylic acid slump retaining agents, starch ether and magnetic hydrotalcite. The high-water-retaining-property shield construction premixed synchronous grout material has the advantages that the optimized admixture, the bentonite, the fine sand with the fineness modulus being 1.6 and the additives special for mortar are jointly used in the shield construction premixed synchronous grout material, the fluidity loss of the adjusted grout material is less than or equal to 30mm in 6 hours, bleeding rate is reduced to be lower than or equal to 3.0%, and sedimentation after a vibration test is less than or equal to 20mm; due to the fact that the magnetic hydrotalcite is added, the grout material can reduce construction noise during stirring and absorb heavy metal ions to prevent heavy metal in the mortar from causing secondary pollution on the basis that the original physical properties are kept.

A preparation method of the damage of the protection slopes of underwater concrete slabs is applicable to the preparation of the damage of the protection slopes of the underwater concrete slabs of waterways, dikes, dams, bank slopes, etc. In the method, underwater detection is carried out, mould bags with a suitable size are customized according to the position and the shape of a damage hole, mould bag concrete is positioned and casted, after the mould bag concrete blocks the damage hole, an infusion hole and a water outlet are bored at proper positions above the damage hole, a duct is applied to infuse underwater non-dispersible concrete from the infusion hole, the self-compaction and anti-dispersibility of the underwater non-dispersible concrete is utilized to fill up the cavity, seeper is drained out of the water outlet, consequently, the cavity is filled up, and the rupture and the collapse of the damaged slab can be prevented. The present invention does not need to build a cofferdam, underwater human operation is relatively less, engineering quantities and construction difficulties are reduced and the cost is decreased; because the underwater non-dispersible concrete is utilized in the concreting construction, the construction is safe and the water body is not polluted; a waterway is not needed to be closed up, so navigation is not affected.

A control valve includes: a body having a control chamber communication port and a suction chamber communication port; a valve element that moves toward and away from a valve hole to close and opening a bleed valve, the ports communicating with each other through the valve hole; a solenoid to generate a drive force in an opening direction of the bleed valve; and a pressure sensing element to sense a pressure in the suction chamber or a pressure in the control chamber, and generate a counterforce against the drive force from the solenoid depending on a magnitude of the sensed pressure. An opening degree of the bleed valve is controlled so that the sensed pressure becomes a set pressure. A bleed passage for delivering the refrigerant introduced through the control chamber communication port to the suction chamber even while the bleed valve is in a closed state is formed.

The invention discloses a preparation method of an ether ester copolymerization type polycarboxylic acid water reducing agent for improving a rheological behavior. The water reducing agent is preparedthrough a copolymerization reaction of a first mixture, unsaturated polyether with the molecular weight of 4000-6000, unsaturated acid, a compound A, an initiator, a molecular weight regulator and deionized water, wherein the first mixture is prepared through an ester exchange reaction of methoxypolyethylene glycol with the molecular weight of 1000-4000, alkylphenol polyoxyethylene ether, unsaturated carboxylic ester and a polymerization inhibitor. According to the invention, a benzene ring and an imide structure are introduced, and the introduction of the benzene ring structure can effectively improve the adsorption efficiency and the thickness of an adsorption layer of polymer molecules on the surface of cement particles, so that the space stability effect of the water reducing agent ismore obvious; by means of introducing the imide structure, the adsorbability on the surface of the cement particles, the electrostatic repulsion effect among the cement particles, and the stability and the fluidity of the cement paste can be improved.

The invention discloses a preparation method of a starch grafting concrete thickener. The preparation method comprises the following steps: 1) pasting starch and obtaining a starch free radical under the effect of an initiator A; 2) performing water-phase free radical polymerization of the starch free radical, unsaturated amide small monomer and unsaturated sulfonic acid small monomer under the joint effect of an initiator B and a reducing agent system to obtain a copolymerization product; and 3) after reaction, washing with ethanol, performing suction filtration, drying, adjusting the pH to 6-7 with alkali liquor, and adding water to obtain a starch grafting concrete thickener with concentration of 10-20% by mass. The method disclosed by the invention has high efficiency and is easy to operate. The starch grafting concrete thickener prepared in the invention can remarkably improve the water retention capacity of concrete, and solves the problems of disintegration and bleeding of concrete while the product performance is stable.

The present invention provides methods of using recombinant human fibrinogen to prevent or treat excessive bleeding in pre-hospital and hospital settings. In particular, the present invention relates to methods for treating bleeding using recombinant human fibrinogen in individuals suffering from traumatic hemorrhages in pre-hospital settings and in individuals having thrombocytopenia or qualitative platelet disorders.

The invention discloses a low-sensitivity anti-mud ether-ester copolymerized polycarboxylic acid water reducing agent and a preparation method thereof. The pH value is 6.0-6.5, and the solid content is 45-55%. The pH value is 6.0-7.0, and the solid content is 45-55%. The water reducing agent is composed of the following components in parts by weight: 10-100 parts of 4-hydroxybutylvinyl polyoxyvinyl ether with the molecular weight of 2000-5000, 10-100 parts of methoxypolyethylene glycol methacrylate, 6-10 parts of unsaturated monocarboxylic acid, 3-6 parts of unsaturated carboxylate monomer, 2-5 parts of dibutyl itaconate, 1-5 parts of unsaturated amphoteric quaternary alkylphosphonium salt, 0.2-0.8 part of oxidizer, 0.2-1.0 part of first reducer, 0.02-0.06 part of second reducer, 0.2-0.6 part of chain-transfer agent, a right amount of potassium hydroxide water solution, a right amount of sodium hydroxide water solution and a right amount of deionized water. The polycarboxylic acid water reducing agent has the advantages of more uniform side chain distribution and favorable slump retaining effect, and has excellent low sensitivity to the doping amount changes.

The invention relates to the technical field of oral care, in particular to lactobacillus salivarius JYLS-372 for improving oral health, a product and a preparation method thereof, the active ingredient of the product is lactobacillus salivarius JYLS-372, and the preparation method comprises the following steps: inoculating the lactobacillus salivarius JYLS-372 onto an MRS liquid culture medium and culturing to obtain MRS bacterial liquid; carrying out centrifugation and vacuum freeze drying on the MRS bacterial liquid to obtain bacterial powder; and mixing and compounding the bacterial powderand isomaltooligosaccharide to obtain the product. The lactobacillus salivarius JYLS-372 disclosed by the invention can be used for synthesizing various vitamins, such as vitaminB1, vitaminB2, vitaminB12 pantothenic acid and folic acid, required by a human body, and can be used for improving the symptoms of gingival bleeding, tooth decay, halitosis, thrush, ulcer sores and the like; the number ofdecayed tooth pathogenic bacteria mutant streptococcus in the oral cavity is obviously reduced, and the formation of dental plaque and the occurrence rate of periodontal diseases are reduced.

The invention designs cuttlebone-containing toothpaste which is characterized by comprising the following ingredients, by weight, 90-95% of toothpaste and 5-10% of cuttlebone powder. The cuttlebone-containing toothpaste has an advantage of improving oral ulcer and gingival bleeding.