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1912results about How to "Improve degradation rate" patented technology
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Medical devices and applications of polyhydroxyalkanoate polymers
InactiveUS6867247B2Reduce probabilityHigh porositySuture equipmentsStentsTissue repairBiocompatibility Testing
Devices formed of or including biocompatible polyhydroxyalkanoates are provided with controlled degradation rates, preferably less than one year under physiological conditions. Preferred devices include sutures, suture fasteners, meniscus repair devices, rivets, tacks, staples, screws (including interference screws), bone plates and bone plating systems, surgical mesh, repair patches, slings, cardiovascular patches, orthopedic pins (including bone filling augmentation material), adhesion barriers, stents, guided tissue repair / regeneration devices, articular cartilage repair devices, nerve guides, tendon repair devices, atrial septal defect repair devices, pericardial patches, bulking and filling agents, vein valves, bone marrow scaffolds, meniscus regeneration devices, ligament and tendon grafts, ocular cell implants, spinal fusion cages, skin substitutes, dural substitutes, bone graft substitutes, bone dowels, wound dressings, and hemostats. The polyhydroxyalkanoates can contain additives, be formed of mixtures of monomers or include pendant groups or modifications in their backbones, or can be chemically modified, all to alter the degradation rates. The polyhydroxyalkanoate compositions also provide favorable mechanical properties, biocompatibility, and degradation times within desirable time frames under physiological conditions.
Owner:TEPHA INC
Hydrophobic polysaccharides with silyl ether linkages having enhanced degradation and medical articles made therefrom
ActiveUS8932616B2Improve degradation rateOvercome difficultiesBiocideOrganic active ingredientsPolymer scienceActive agent
Hydrophobic α(1→4)glucopyranose polymers with enhanced degradation properties are described. Between the α(1→4)glucopyranose polymeric portion and the hydrophobic portion exists a linker portion having a silyl ether chemistry that facilitates degradation of the polymer. Biodegradable matrices can be formed from these polymers, and the matrices can be used for the preparation of implantable and injectable medical devices wherein the matrix is capable of degrading in vivo at an increased rate. Matrices including and capable of releasing a bioactive agent in vivo are also described.
Owner:SURMODICS INC
Biodegradable cigarette filter
InactiveUS20120000480A1Improve degradation rateIncrease usable surface areaTobacco treatmentTobacco smoke filtersFiberCellulose acetate
A biodegradable fiber (including fiber tow) and / or biodegradable paper substrate may be coated with cellulose acetate and / or plasticized cellulose acetate for use in a filter material configured for application in a filter of a smoking article. A filter made in accordance with this design may also include non-biodegradable material.
Owner:R J REYNOLDS TOBACCO COMPANY
Sphingomonas strain and application thereof in water treatment
InactiveCN102168054APromote degradationReduce concentrationBacteriaMicroorganism based processesIndustrial waste waterWater source
The invention belongs to the technical fields of environmental engineering and bioengineering and particularly relates to a sphingomonas strain and applications thereof in the aspects of shortcut nitrification-denitrification of nitrogen-containing industrial waste water and domestic sewage and treatment of a polluted water source. The sphingomonas strain is separated from a Taihu water in China,is a local strain and has high safety; and the strain can be grown in a basic medium, wherein in the basic medium, CO2 is used as a carbon source and energy or CO2 and an organism are used as a mixedcarbon source and energy, and ammonia nitrogen or nitrate nitrogen is used as a nitrogen source. The bacterium liquid, the dormancy cell and the immobilized strain of the sphingomonas can decompose ammonia nitrogen into nitrite nitrogen and simultaneously can decompose the ammonia nitrogen into nitrogen, can be used as denitrification microorganism for converting the ammonia nitrogen into the nitrite nitrogen and the nitrogen, thereby achieving the shortcut nitrification-denitrification. The strain can rapidly decompose the ammonia nitrogen and is suitable for treating the nitrogen-containingindustrial waste water and domestic sewage as well as polluted water source.
Owner:NANJING UNIV
Biomass magnetic carbon material for degrading organic dye
InactiveCN103480331AHigh catalytic activityPromote degradationOther chemical processesAlkali metal oxides/hydroxidesPtru catalystOrganic dye
The invention relates to a biomass magnetic carbon material for degrading organic dye. The material is prepared by mixing a biological raw material and an iron precursor at a ratio of (2-20kg):1kg. Meanwhile, the invention also discloses a preparation method of the biomass magnetic carbon material. The biomass magnetic carbon material provided by the invention is cheap and efficient and has double effects of adsorption catalysis and degradation; serving as an efficient catalyst in a process of constructing a Fenton-like system for treating high-concentration wastewater, the biomass magnetic carbon material has high catalytic activity in thoroughly oxidizing and degrading organic dye; the degradation effect is better than that of a ferrous ion homogeneous catalysis reaction and a Fenton-like reaction taking ferroferric oxide as a catalyst.
Owner:LANZHOU UNIVERSITY
Biodegradable cigarette filter
InactiveUS20120000479A1Improve degradation rateIncrease usable surface areaTobacco treatmentCigar manufactureCellulose acetateCigarette filter
A biodegradable fiber (including fiber tow) may be coated with cellulose acetate for use in a filter material configured for application in a filter of a smoking article. A filter made in accordance with this design may also include non-biodegradable fiber, but will generally be subject to improved degradation time in a variety of disposal environments.
Owner:R J REYNOLDS TOBACCO COMPANY
Highly effective straw decomposition composite flora
The invention relates to a biotechnology dealing agricultural discard stem with an highly effective stem decomposing composite bacterial, which dissolves the problem of single species of applying microbiological bacterial, weak breaking up, low total degradability rate of cellulose, long developmental cycle. The composite bacterial comprises the following parts: yellow archespore wool bacterium leather bacterial, mushroom bacterial, haci trichoderma, green trichoderma, coninic trichoderma, aspergillus niger, bacillus subtilis, feed bacillus, bacillus megaterium, candida, distillery yeast, food-yeast, brown sphere azotobacter, thermoactinomyces, and so on. The composite bacterial can overall degrade lignin, cellulose, hemicellulose and other organic material in the stem, has a more than 80% degrading rate, a 10-15 days short cycle, keeps a long time for providing a solid bacteria.
Owner:韩农
Multi-wheel vehicle
A vehicle comprises a steering operation device, a pair of running-driving wheels, which differentially drive when the steering operation device is manipulated, a pair of steerable running wheels interlocking with the steering operation device, and a steering mechanism interposed between the steering operation device and the pair of running-driving wheels. The steering mechanism includes a pair of drive gears interlocking with the steering operation device and a pair of follower gears interlocking with the respective steerable running wheels. The drive gears mesh with the respective follower gears so as to control lateral turning of the respective steerable running wheels. A gear radius of the drive gear may be greater than that of the follower gear meshing with it. A gear ratio between the mutually meshing drive and follower gears may be variable. The lateral turning centers of both the steerable running wheels may coincide with each other, and further coincide with a lateral turning center of the vehicle body caused by differential rotation of the running-driving wheels.
Owner:KANZAKI KOKYUKOKI MFG
Humidifying apparatus
ActiveUS20130249124A1Compact appearanceIncrease storage capacityPump componentsFlow mixersUltraviolet radiationWater reservoir
A humidifying apparatus includes a nozzle and a base on which the nozzle is mounted. The nozzle has respective first and second air inlets, air outlets and interior passages for conveying air therefrom and thereto. The nozzle defines a bore through which air outside the humidifying apparatus is drawn by air emitted from the air outlets. The base generates first and second air flows through the respective first and second interior passages, and a water reservoir. First and second air passageways convey the first and second air flows to the respective first and second air inlets. As the second air passageway conveys the second air flow over the water in the reservoir, water stored in the reservoir is agitated. An ultraviolet radiation generator irradiates the agitated water for a period of time before water stored in the reservoir is atomized to increase the humidity of the second air flow.
Owner:DYSON TECH LTD
Humidifying apparatus
ActiveUS20130249126A1Compact appearanceMaximization of water capacityPump componentsLighting and heating apparatusTransducerWater flow
Humidifying apparatus includes a housing defining a water reservoir, and a water tank mounted on the housing for supplying water to the reservoir. An air flow is conveyed over water stored in the reservoir and emitted from the apparatus. The water stored in the reservoir is irradiated by ultraviolet radiation and atomized by a transducer to humidify the air flow passing over the reservoir. A flow of water entering the reservoir is guided adjacent to, and preferably along, the ultraviolet radiation generator.
Owner:DYSON TECH LTD
Self-Healing Composite of Thermoset Polymer and Programmed Super Contraction Fibers
ActiveUS20140303287A1Light weightReduce vibrationMonocomponent polyurethanes artificial filamentPretreated surfacesFiberThermoplastic
A composition comprising thermoset polymer, shape memory polymer to facilitate macro scale damage closure, and a means for molecular scale healing is disclosed; the composition has the ability to resolve structural defects by a bio-mimetic close-then heal process. In use, the shape memory polymer serves to bring surfaces of a structural defect into approximation, whereafter use of the means for molecular scale healing allowed for movement of the healing means into the defect and thus obtain molecular scale healing. The means for molecular scale healing can be a thermoplastic such as fibers, particles or spheres which are used by heating to a level at or above the thermoplastic's melting point, then cooling of the composition below the melting temperature of the thermoplastic. Compositions of the invention have the ability to not only close macroscopic defects, but also to do so repeatedly even if another wound / damage occurs in a previously healed / repaired area.
Owner:BOARD OF SUPERVISORS OF LOUISIANA STATE UNIV & AGRI & MECHANICAL COLLEGE
Biodegradable cationic polymers
InactiveUS20060258751A1Reduce deliveryImprove degradation rateBiocideNanotechActive agentPolymer chemistry
Polymers comprising a polyethylenimine, a biodegradable group, and a relatively hydrophobic group are useful for the delivery of bioactive agents to cells.
Owner:NITTO DENKO CORP
Fan assembly
ActiveUS20140210115A1Easy to cleanIncrease storage capacityLighting and heating apparatusUsing liquid separation agentUltraviolet radiationTransducer
Humidifying apparatus includes a chamber, and a water tank for supplying water to the chamber. A baffle located within the chamber divides the chamber into an inlet section and an outlet section, and guides water received from the water tank along the inlet section to the outlet section. An air flow is conveyed over water stored in the outlet section of the chamber and is emitted from the apparatus. Water within both the inlet section and the outlet section of the chamber is irradiated with ultraviolet radiation. The water within the outlet section is atomized by a transducer to humidify the air flow.
Owner:DYSON TECH LTD
Apparatus for manufacturing substrate
InactiveUS7905960B2Increase the number ofStrengthen restrictionsSemiconductor/solid-state device manufacturingChemical vapor deposition coatingEngineeringRobot
An apparatus for manufacturing a substrate includes: a transferring chamber extended along a long direction; at least one process chamber connected to the transferring chamber along the long direction; at least one load-lock chamber connected to the transferring chamber at least one side of the transferring chamber; and a transferring chamber robot moving along the long direction in the transferring chamber and transferring a substrate.
Owner:JUSUNG ENG
Dephosphorization and denitrification, mud decrement and phosphorus recovery integrated sewage treatment device and method thereof
InactiveCN101544453AImprove system synchronous denitrification and dephosphorization capacityReduce pool capacityTreatment with aerobic and anaerobic processesMultistage water/sewage treatmentContinuous flowChemistry
Owner:CHONGQING UNIV
Adjustment of target ventilation in a servoventilator
ActiveUS20090013999A1Improve degradation rateRespiratorsOperating means/releasing devices for valvesVentilation volumeEngineering
A servoventilator control slowly changes the target ventilation over a period of time, according to a preprogrammed schedule adapted to be set by the physician. Preferably, the target ventilation stays constant at an initial target ventilation for an initial hold time, and then increases at a constant rate until it reaches a final target ventilation, whereupon it stays constant thereafter. If the pressure support level is too high, possibly indicating glottic or upper airway closure, the rate of increase of target ventilation may be lowered or the final target ventilation not reached.
Owner:RESMED LTD
Degradable cigarette filter
InactiveUS20120017925A1Improve degradation rateIncrease usable surface areaTobacco treatmentCigar manufactureChemistryCellulose acetate
A biodegradable fiber (including fiber tow) and / or biodegradable paper substrate may be coated with cellulose acetate, plasticized cellulose acetate and / or ethylene vinyl acetate for use in a filter material configured for application in a filter of a smoking article. A filter made in accordance with this design may also include non-biodegradable material.
Owner:R J REYNOLDS TOBACCO COMPANY
Degradable filter element for smoking article
InactiveUS20120000481A1Improve degradation rateIncrease usable surface areaTobacco treatmentTobacco smoke filtersFiberPolymer science
A filter material configured for use as a filter element of a smoking article is provided, the filter material including at least one segment of fibrous tow having a plurality of superabsorbent objects dispersed therein, the superabsorbent objects comprising a starch material. Exemplary starch materials include naturally-occurring starch, hydroxyalkylated starch, starch esters, ionically modified starch, oxidized starch, hydrolyzed starch, plasticized starch, gelatinized starch, grafted starch, crosslinked starch, transglycosylated starch, starch ethers, and mixtures thereof, as well as blends of starch with other polymers. Filter elements and smoking articles, such as cigarettes, that contain the filter material are also provided. A method of preparing polymer fibers for use in filter elements is also provided, the method including adding the starch material to a fiber precursor solution prior to fiber extrusion or dry-blending the starch material with the polymer material to be formed into fibers.
Owner:R J REYNOLDS TOBACCO COMPANY
Low speed, load independent, slew rate controlled output buffer with no DC power consumption
InactiveUS7924066B2Improve degradation rateShorten the timePower consumption reductionElectric pulse generatorCapacitanceLow speed
An output buffer utilizes capacitive feedback to control the output slew rate largely independent of load capacitance. The invention slows the rising and falling slew rates and via a capacitance feedback reduces the effect of load capacitance on slew rate, and uses no DC current. Transistor switches are employed to isolate and reduce noise and interaction among the circuit components and functions.
Owner:SEMICON COMPONENTS IND LLC
Engine Speed Reduction Preparatory to an Engine Restart
ActiveUS20100305820A1Improve degradation rateEliminates potentially long delayHybrid vehiclesAnalogue computers for vehiclesEngineeringSpeed reduction
Owner:FORD GLOBAL TECH LLC
High-property absorption and wave absorption type catalyst for VOCs (Volatile Organic Chemicals) catalytic oxidation and preparation of catalyst
InactiveCN103736515ALarge saturated adsorption capacityEvenly distributedMolecular sieve catalystsDispersed particle separationMolecular sievePtru catalyst
The invention provides a high-property absorption and wave absorption type catalyst for VOCs (Volatile Organic Chemicals) catalytic oxidation. The high-property absorption and wave absorption type catalyst has a structural formula: a Cu-Mn-Ce / TiO2-molecular sieve or a CNDs-Cu-Mn-Ce / TiO2-molecular sieve, wherein CNDs serve as a modifier; Cu and Mn serve as catalytic activity components; Ce serves as a promoted catalytic metal; a TiO2-molecular sieve serves as a carrier. The invention further provides a preparation method of the catalyst. According to the catalyst and the preparation method of the catalyst provided by the invention, the treatment cost is greatly reduced and energy is utilized at maximum through the advantages of the combination of a plurality of materials, so that the relatively good VOCs catalytic oxidation effect can be realized under the microwave irradiation.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Ag doped BiOBr catalytic material and preparation method and application thereof
InactiveCN101850263AStrong visible light response performanceEfficient degradationPhysical/chemical process catalystsWater/sewage treatment by irradiationPhotocatalysisCompound (substance)
The invention relates to an Ag / BiOBr composite photocatalytic material and a preparation method and application thereof, belongs to the field of photocatalytic materials. The invention uses a low-temperature soft chemical method, compounds a novel semiconductor BiOBr and silver nanoparticles to prepare the Ag / BiOBr composite photocatalyst material. The unique interaction between Ag and BiOBr enhances the absorption properties of the catalyst to visible light and speeds up the transport process of photon-generated carriers, reduces the recombination probability of electron-hole pair, and improves the quantum efficiency of visible photocatalysis. Under visible light, the composite catalytic material has extremely high degradation performance of organic dyes. The invention has simple preparation process, mild conditions, low cost and good prospects for industrial application.
Owner:JIANGXI UNIV OF SCI & TECH
Fluid Flow Control Regulator
ActiveUS20080265064A1OptimizationEasy to modifyOperating means/releasing devices for valvesWatering devicesEngineeringFluid pressure
A fluid flow regulator (20) comprising: a fluid inlet port (34) and a fluid outlet port (54); at least one open-faced flow control channel (60) defined by a planar bottom (62) and two side-walls (64) that communicates with the outlet port (54) at a junction (66) and has a cross-section that decreases with distance from the junction; an elastic diaphragm (40); a support shelf (58) on which the diaphragm (40) seats and which supports the diaphragm (40) along a planar contour parallel to the bottom of each of the at least one channel (60); wherein to regulate fluid flow, with increasing inlet fluid pressure the diaphragm (40) covers portions of the open face that are farther from the junction (66) in a region where the cross-section decreases with distance from the junction (66).
Owner:NETAFIM LTD
Low speed, load independent, slew rate controlled output buffer with no DC power consumption
InactiveUS20100244907A1Reduce slew rate variationImprove degradation ratePower consumption reductionElectric pulse generatorCapacitanceLow speed
An output buffer utilizes capacitive feedback to control the output slew rate largely independent of load capacitance. The invention slows the rising and falling slew rates and via a capacitance feedback reduces the effect of load capacitance on slew rate, and uses no DC current. Transistor switches are employed to isolate and reduce noise and interaction among the circuit components and functions.
Owner:SEMICON COMPONENTS IND LLC
Fluid flow control regulator
ActiveUS7775237B2OptimizationEasy to modifyOperating means/releasing devices for valvesWatering devicesEngineeringFluid pressure
A fluid flow regulator (20) comprising: a fluid inlet port (34) and a fluid outlet port (54); at least one open-faced flow control channel (60) defined by a planar bottom (62) and two sidewalls (64) that communicates with the outlet port (54) at a junction (66) and has a cross-section that decreases with distance from the junction; an elastic diaphragm (40); a support shelf (58) on which the diaphragm (40) seats and which supports the diaphragm (40) along a planar contour parallel to the bottom of each of the at least one channel (60); wherein to regulate fluid flow, with increasing inlet fluid pressure the diaphragm (40) covers portions of the open face that are farther from the junction (66) in a region where the cross-section decreases with distance from the junction (66).
Owner:NETAFIM LTD
Method and composition for treating neurodegenerative disorders
InactiveUS20050288375A1Delay and slow onsetImprove the level ofBiocideNervous disorderNeuro-degenerative diseaseCYP2C9
The invention provides compositions and methods for treating neurodegenerative disorders. A method of the invention involves administering to an individual in need of treatment a composition having an R-NSAID and an NMDA antagonist. Another method of the invention involves administering to an individual in need of treatment a composition having at least two compounds that are capable of interacting with CYP2C9, wherein at least one of said compounds is an Aβ42 lowering agent. The methods and compositions of the invention are useful for treating and preventing neurodegenerative disorders like Alzheimer's disease, dementia, mild cognitive impairment.
Owner:MYRIAD GENETICS
Nonvolatile semiconductor memory device and method of programming in nonvolatile semiconductor memory device
ActiveUS7116581B2Make a width of threshold voltage distribution narrowerNarrow widthTransistorSolid-state devicesVoltage referenceComputer science
A memory cell array includes a plurality of memory cells each of which has a control gate and a floating gate. A programming circuit operates in a first programming mode followed by a second programming mode. In the first programming mode, the programming circuit applies a first program pulse to first memory cells while progressively increasing a programming capability of the first program pulse until threshold voltages of the first memory cells become higher than or equal to a first reference voltage. In the second programming mode, the programming circuit applies a second program pulse to second memory cells included in the first memory cells and having threshold voltages lower than a second reference voltage that is higher than the first reference voltage until the threshold voltages of the second memory cells become higher than or equal to the second reference voltage.
Owner:RENESAS ELECTRONICS CORP
Process of botany for repairing soil composite polluted by polycyclic aromatic hydrocarbon
InactiveCN1792483AImprove degradation rateLow costSeed and root treatmentContaminated soil reclamationPolycyclic aromatic hydrocarbonMyriophyllum
A phytologic method for repairing the soil polluted by polycycloarylhydrocarbon features that the leguminous plant such as alfalfa, trifolium, etc is planted in said polluted soil and it is harvested after it is growing for 85-95 days.
Owner:INST OF SOIL SCI CHINESE ACAD OF SCI
Composite TiO2-SiO2 aerogel and application thereof
InactiveCN103706348AImprove degradation ratePhysical/chemical process catalystsWater/sewage treatment by irradiationSupercritical dryingAnhydrous ethanol
The invention provides composite TiO2-SiO2 aerogel and an application thereof. The aerogel material has the adsorption performance of SiO2 and the photocatalytic performance of TiO2. A preparation method for the composite TiO2-SiO2 aerogel comprises the following steps of 1, preparing SiO2 sol; 2, preparing TiO2 sol; 3, dropping the SiO2 sol into the TiO2 sol, uniformly stirring the SiO2 sol and the TiO2 sol, standing the sol under room temperature until the sol is condensed, aging the sol mixture through anhydrous ethanol for multiple days, and performing supercritical drying through ethyl alcohol. The preparation technology for the TiO2-SiO2 aerogel is simple; the composite TiO2-SiO2 aerogel has an extremely good effect of degrading explosive powder wastewater.
Owner:NANJING TECH UNIV
Method for removing pollutant of water with synergistic effect of water treatment agent and microwave
InactiveCN1966419AReduce deliveryHigh removal rateWater/sewage treatment by irradiationWater/sewage treatment with mechanical oscillationsNatural organic matterContaminated water
The invention relates to a way to remove the pollutant in water by water treatment chemical together with the microray. It is a kind of water treating method which solved the problem of long reacting time and large dosage of oxide in treating the water pollutant. It's realized by the following steps: (1)determine the content of the pollutant; (2) the ratio of the water treatment chemical to the pollutant is 1-10:1; (3) adjust the Ph value of the water; (4) treat the polluted water with water treatment chemical as well as microray; (5) separate the solid substance from water to get purified water. Compared to the traditional method, the dosage of the oxide is 30% less in the invention, the removal rate of ammonia nitrogen is 10-60% higher in the invention than the treatment with only ferri-salt; the degradation rate of the natural organic humic acid has been increased by 20-40%; the hard-to-degrade organics (such as nitrobenzene) removal rate has been increased by 30-50%; the invention has many advantages such as low cost and reliable operation it has extensive applying prospect in water treatment domain.
Owner:HARBIN INST OF TECH
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