67results about How to "Maintain nature" patented technology

An osteotomy guide having a frame and a pair of guide pins, for creating a desired cut in a bone. The frame has an outer frame, and an inner frame which is telescopically mounted within the outer frame. Both the inner frame and outer frame having open ends and a guide pin sleeve. The inner frame and outer frame together define a main slot which is adjustable in length by moving the inner frame with respect to the outer frame. The frame is mounted to the bone by creating anchoring holes in the bone and extending the guide pins through the guide pin sleeves and into the anchoring holes, such that the guide pins are parallel in all planes. A controlled cut is created by using the guide pins as a visual guide or inserting a saw blade through the main slot.

An introducer sheath having a main body, a sheath, one or more connections to one or more corresponding entry lines, and a stop cock delivery valve. The stop cock can connect to at least one of the entry lines, and can further connect to a fluid source, thereby providing a manipuable delivery interface from the fluid source to the introducer sheath housing. A rotator can interface at a point between the introducer sheath and the stop cock, allowing a user to configure the stop cock to conformations that can be easily accessible for right or left handed users, as appropriate for the position of the introducer sheath housing.

Protocols are provided to support communication between paging controllers and paging agents in a wireless network that implements idle mode paging.

An auto-configuration arrangement enables a general-purpose mobile terminal or user equipment (UE) and an access network having specific native or standardized codecs and media formats to conform to one another and to thus optimize resource utilization in the access network. When the UE is attached to the access network, UE and user identifier information is signaled by the UE to a configuration node implemented in the access network. The configuration node acquires information details regarding the UE, and also relevant user subscription information, by retrieval from one or more access network registers. The configuration node then uses the detailed information together with access network specific information to decide what QoS definition and type of codec to select for use, and assembles the selected definitions and codecs, such as by retrieval from a repository. The configuration node sends the selected QoS definitions and codecs to the UE, and the UE configures itself in accordance therewith by means of a configuration layer residing in the UE.

The process of preparing nanometer and micron fullerene fiber includes: grinding fullerene material to reach metal luster, dissolving in organic solvent to obtain saturated solution, irradiating with visible light to form colloid solution, mixing with certain amount of lean solvent, setting in thermostat for certain time to separate out monocrystalline nanometer and micron fullerene fiber in millimeter to centimeter level length. The process is simple, feasible and repeatable, and the monocrystalline fullerene fiber with high length-to-diameter ratio and high purity may be applied in fuel cell electrode, catalyst, low dimensional semiconductor, etc.

A bioreactor (1) having a container (2), a shaft housing (3) for guiding a shaft (5) through a wall (7), a stirrer (6) connected to the shaft (5) in the interior (9) of the container (2), and a drive (4) arranged outside the container (2) and connectable to the shaft (5). The shaft (5) is mounted in the shaft housing (3) via at least one ball bearing (23) and is sealed in relation to the shaft housing (3) by at least one seal (11, 20). The seal (11, 20) is configured as a radial shaft seal (28) having two sealing lips (30, 31) that are arranged one behind the other in the longitudinal direction of the shaft (5) and are able to run on the shaft (5) without lubricant.

The invention belongs to a method and a device for mechanical grinding, namely a process and equipment for grinding nanometer fluid. The nanometer fluid grinding process comprises that nanometer-grade solid containing powder is supplied to a grinding area as a cooling lubrication medium in a grinding process. The equipment is characterized in that: the equipment comprises a lubricant storage tank, a water storage tank, a nanometer-grade powder storage tank and a high pressure air pump, which are arranged on a machine frame; and various mediums are mixed with the high pressure air, the mixture enters an atomizing chamber for mixing atomization and is conveyed to the grinding processing area by a hose and a spray head. Because the coefficient of thermal conductivity of the nanometer powder is high, the nanometer fluid can bring away a large amount of grinding heat when passing the high-temperature area, so that the cooling property of the grinding medium is enhanced, and the defect of the poor cooling effect of the micro lubrication is overcome; and simultaneously, because the weight of the nanometer powder is light, the characteristics and the advantages of the micro lubrication are maintained, the active effects of high processing quality, low cost and no pollution are achieved, and the method becomes the fourth generation lubrication cooling grinding process after wet processing, dry processing and micro lubrication.

Precision dispense pumps comprise a housing that has an internal chamber disposed therein. A pressurizing assembly disposed within the chamber and includes a cylindrical pressurizing member having a head, a thin-walled skirt extending axially away from the head, and a flange is positioned circumferentially around the skirt. The pressurizing assembly includes a support coupled to backside of the pressurizing member. The support has a cylindrical outside surface sized support the skirt when it is translated from a chamber surface during pressurizing assembly axial movement. A shaft projects through an opening in the support and into a partial opening in the pressurizing member. A fluid transport body is attached to the housing and includes a fluid chamber having a fluid inlet port and a fluid outlet port. An actuator is disposed within an actuator housing attached to the housing and is coupled to the shaft to cause axial movement of the pressurizing assembly within the housing chamber. The pump can includes a vacuum assist element connected to the housing to provide a desired pressure differential within the pump to bias the skirt against supportive chamber or support surfaces during pressurizing assembly movement. Check valves are in fluid flow communication with the fluid inlet and fluid outlet ports to ensuring checked one-way passage of fluid into and out of the fluid chamber during respective intake and output strokes of the pressurizing assembly.

The invention belongs to the technical field of polyimide thin films, and relates to a low dielectric constant polyimide porous thin film and a preparation method thereof. The preparation method comprises the steps of preparation of a polyimide organic solution, mixing of the polyimide organic solution and deionized water, pouring and forming film after mechanical dispersion and the like. The preparation method has the characteristics that the equipment is simple, the condition is mild, the cost is low, the period is short, and the operation process and technique are simple and convenient. Because water drops are selected to serve as a hole forming template, the water drops do not have the advantage of being low in price, but also do not need to be removed through additional steps, therefore, damage to the structure and the property of the polyimide thin film is avoided while the operation steps are simplified. In addition, the structure of the polyimide porous thin film can be adjusted by changing the film forming condition, and accordingly regulation of the dielectric constant of the thin film is achieved. Compared with a non-porous polyimide thin film, the dielectric constant ofthe prepared polyimide porous film is obviously reduced, and the polyimide porous film is hopefully applied to the industries of electronics, micro electronics, spaceflight and the like.

The invention relates to a method preparing a fullerene nano micron material loaded with transition metal and a product of the fullerene nano micron material. The fullerene nano micron material refers to fullerene nano micron fiber (a fullerene nano micron crystal whisker and a fullerene nano micron tube) and a fullerene nano micron wafer. The method comprises a direct liquid-liquid interface loading method and a capillary adsorption method. The direct liquid-liquid interface loading method comprises steps of grinding a fullerene matter till the fullerene matter has metal luster, dissolving the fullerene matter in a good organic solvent so that the solution is a saturated solution, irradiating the saturated solution to a colloidal solution by using natural daylight or visible light in a container, mixing the colloidal solution and a certain amount of poor solvent containing a transition metal compound of certain concentration evenly, placing the mixture to a constant temperature incubator, standing, crystallizing and separating out the fullerene nano micron material loaded with the transition metal. The capillary adsorption method comprises that the transition metal compound is absorbed to the fullerene nano micron tube through a capillary principle. The method is simple, easy to implement, good in repetitiveness and applied to environmental protection fields such as fuel cell electrodes, catalysts, catalyst carriers, low dimensional semiconductors, functional polymer composite materials and valuable metal recycling in waste solvents.

The invention discloses a pressure-maintaining transfer and culture device for a deep sea water sample. The pressure-maintaining transfer and culture device mainly comprises a pressure-maintaining sampling barrel, a transfer and culture barrel, a first high-pressure pump, a second high-pressure pump, a third high-pressure pump, an overflow valve and the like. The device can realize pressure-maintaining transfer of the deep sea water sample after deep sea water sampling, and can carry out later-stage culture experiment on the transferred water sample. The system adopts a unique structure design to realize the equal-pressure equal-temperature transfer technology of the sample; the post-treatment technology can keep states such as a high-pressure water sample gas phase, an organic phase and osmophilic organisms, is beneficial for keeping the original components and properties of the sample, reduces the discrimination effect on follow-up lab post-treatment and is of great importance on authenticity and reliability of sample detected data. Moreover, the device can add a culture solution needed for an experiment into a culture cavity without being dismounted in the working process, and is convenient and efficient.

The invention relates to a preparing method of a spherical titanium-aluminum composite carrier. The preparing method is characterized by comprising the following steps: adding deionized water and titanium oxide into alumina gel and uniformly mixing; slowly adding an alginate solution, and stirring at high speed to prepare suspension slurry; dropping the suspension slurry into a multivalent metal cation solution to form spherical composite gel particles; and drying and roasting the gel particles to obtain the spherical titanium-aluminum composite carrier, wherein aluminum oxide hydrogel or nano aluminum oxide gel is adopted as the alumina gel; the adding amount of titanium oxide is 0.1-4 times the mass of alumina gel based on Al2O3, and the crystalline phase of titanium oxide is selected as anatase phase; the solid content of the suspension slurry is 5%-25%, and the content of alginate is 0.3%-5%; alginate is one or more of sodium alginate, potassium alginate, magnesium alginate and ammonium alginate; the multivalent metal cation solution is saline solutions containing aluminum ions, zinc ions, calcium ions, copper ions, iron ions, ferrous ions, cobalt ions, manganese ions or nickel ions, with the saturation concentration being 0.1mol / L.

The invention belongs to the technical field of material preparation, and relates to a preparation method of a hybrid material compounded from a fullerene micro-nano material and a conjugated polymer. The preparation method comprises the following steps: placing a fullerene substance into a agate mortar for grinding; dissolving the fullerene substance by adopting a good solvent, and then removing into a transparent glass bottle; carrying out ultrasonic dispersion by using ultrasonic waves in an ice-water bath, then filtering at room temperature to obtain a fullerene saturated solution, and then culturing by adding isopropanol to obtain suspending liquid which contains the fullerene micro-nano material; dissolving the conjugated polymer into the good solvent, and filtering to obtain a conjugated polymer solution; adding the conjugated polymer solution to the suspending liquid which has the volume ratio of 1-10 times and contains the fullerene micro-nano material; and carrying out oscillating mixing processing by using the ultrasonic waves, and culturing to obtain the hybrid material compounded from the fullerene micro-nano material and the conjugated polymer. The preparation method disclosed by the invention has the advantages of simple integral process, reliability in principle and short production period; the prepared material has the advantages of good property, wide application range, high reliability and environment friendliness.

A process of controlled radical polymerization, and products made therefrom is disclosed. The process includes performing controlled radical polymerization on a composition comprising a polymerizable compound, an initiator, a ligand, and a catalyst; permitting the controlled radical polymerization reaction to proceed until a desired level of conversion is attained, but prior to complete conversion to obtain an intermediate polymerization product; and further reacting the intermediate polymerization product with a reactant having a cluster of multiple reactive sites to provide a polymer reaction product having a cluster of pendent multiple reactive sites adjacent to said terminal ends of said polymer reaction product.

The present invention relates to a method for isolating extracellular vesicles using cations, and more particularly, to a method for isolating extracellular vesicles from various samples by using theaffinity between the extracellular vesicles and cations. A method for isolating extracellular vesicles according to the present invention does not require expensive equipment, can be applied irrespective of sample amount, and has the advantage of being capable of efficiently isolating the extracellular vesicles while preserving the shape or characteristics thereof. Moreover, the method according to the present invention can be combined with existing isolation methods to maximize extracellular vesicle isolation efficiency, and can be applied to disease diagnosis, disease treatment, and multi-omics research using isolated extracellular vesicles, as well as to research on the properties of extracellular vesicles.

A lighting assembly includes a light source having a first generally planar, light source including a perimeter edge. A backsheet is disposed in substantially parallel relation with the light source, and includes at least one electrical feedthrough region extending through the backsheet and substantially covered by a contact patch disposed in substantially planar relation between the backsheet and the light source. A generally planar, connector cable extends over the backsheet and has connector pad(s) positioned thereon to associate with each feedthrough and to the light source through the contact patch. A low temperature solder material is disposed between each connector pad and contact patch for establishing electrical connection with the light source, wherein one or more of the light source, connector cable, backsheet, or any portion thereof is constructed of one or more plastics.

The invention discloses softened veneer and a manufacturing process thereof, belonging to the technical field of timber processing. The softened veneer comprises a soft wood piece layer I and a soft wood piece layer II, a solid glue layer is fixed between the soft wood piece layer I and the soft wood piece layer II, and the soft wood piece layer I and the soft wood piece layer II are connected by the solid glue layer into the whole softened veneer. The softened veneer can be bent freely without breakage and is soft and durable. The appearance and properties of timber are adopted by the two wood surface layers, and the softened veneer is a novel material with strong practicality.

The invention relates to a device and the process for extracting peanut oil and leaving whole peanut, and relates to albumen powder and peanut powder made from the degreased peanut. The device for extracting peanut oil and leaving whole peanut includes a hydraulic plant and an oil press system. The hydraulic plant controls the oil press system by a piston, and the oil press system is sequentially composed of a drip tray, a lower ejector plate, an oil flowing plate, a press ring, a pressure dish and an upper ejector plate. The invention adopts the low-temperature method for extracting the peanut oil and leaving the whole degreased peanut, pressure is applied slowly and repeatedly, so that the peanut can not be pressed into meal in oil pressing, the whole nutrient content of the peanut is kept, 70%-80% of the fat in the peanut can be removed, the protein can be improved by more than 70%, the food with high protein and low fat can be formed.

The invention discloses collagen / polysaccharide embedded microcapsule plant essential oil which comprises a compound wall material and a core material. The essential oil is characterized in that the core material is blueberry and rose mixed plant essential oil, the compound wall material wraps the outer side of the plant essential oil, the compound wall material comprises three layers including the first layer, the second layer and the third layer from inside to outside in sequence, the first layer is made of a turtle skin collagen and tricholorna lobayense polysaccharide crosslinking agent, the second layer is made of beta-cyclodextrin, and the third layer is made of a turtle skin collagen and tricholorna lobayense polysaccharide crosslinking agent. The mass ratio of the turtle skin collagen to tricholorna lobayense polysaccharides is 2:(1-2), the mass ratio of blueberry essential oil to rose plant essential oil is 1:2, and the mass ratio of the core material to the compound wall material is 1.5:1. The embedding rate is high, the volatilization of the essential oil can be prevented, the original properties and states of the plant essential oil are kept, the essential oil is easy to release in use, the storage life and shelf life of the essential oil can be greatly prolonged, and the quality of the essential oil is improved.

The invention belongs to a mechanical processing method, that is, a process method of carbon nanotube jet grinding nickel base alloy. Carbon nanotube nanoparticles and grinding media are mixed to form nanofluid, and the nanofluid is sprayed into the grinding area in the form of a jet. The cooling performance of the cutting medium makes up for the lack of cooling capacity of the minimum quantity lubrication; at the same time, because the carbon nanotubes also have extremely high toughness, the tube wall has a hexagonal structure of graphite layer, so it has excellent lubrication performance and maintains the minimum quantity lubrication. properties and advantages, and increase the lubrication area of ​​the grinding fluid, effectively reducing the friction between the grinding wheel and the workpiece, between the grinding wheel and chips, prolonging the life of the grinding wheel, and obtaining positive effects of high processing quality, low cost, and no pollution. It has high application value and market prospect.

The invention discloses a method for restoring cyanide contaminated soil by using a low-temperature heat treatment technology. According to the method, the cyanide contaminated soil is used as a research object, common cyanides in the field soil are used as target contaminated substances, and thermal decomposition is carried out on the cyanides by using the low-temperature heat treatment technology, so that the uttermost removal of the cyanides in the soil is efficiently and safely achieved, and the treated soil meets the national "exhibition land soil environment quality evaluation standard HJ350-2007" grade-B standard; the cyanide contaminated land soil is restored by adopting the low-temperature heat treatment technology, so that the removal rate of the cyanides can reach 99% or above,and the degradation rate can reach 97% or above; the method aims at the medium-and-high-concentration cyanogen-containing soil, and the advantages that the efficiency is high, the time is short, and no secondary pollution occurs are achieved; the damage to the physical and chemical properties and the natural fertility of the treated soil is small, so that the situations that the soil can be backfilled after being treated and the agricultural production is restored become possible; and powerful technical support is provided for comprehensive treatment and safety reutilization of a cyanide contaminated site.

A telescopic differential screw mechanism based 3-DOF Parallel Manipulator system to enable differential length and omnidirectional bending is provided. The telescopic differential screw mechanism based 3-DOF Parallel Manipulator system includes a first circular rotating plate 102, a second circular rotating plate 104, three or more telescopic screw assemblies 106A-C and three or more actuators 108A-C. Each telescopic screw assembly 106 includes a pair of master screws 110, a pair of successive screws 112 and a universal joint 116. The three or more telescopic screw assemblies 106A-C are actuated differentially using the three or more actuators 108A-C to achieve omnidirectional bending with high angular rotations in a range of 0 to 75 degree.

A combustion chamber for a turbine engine, including an annular end wall provided with injection systems each centred on a respective axis and each having an upstream end forming a bushing for receiving a head of a fuel injector, and an annular shroud covering the end wall and including injector ports respectively arranged facing the injection systems, wherein the annular shroud includes air intake ports separate from the injector ports, and the bushing of each injection system crosses the corresponding injector port and includes at its upstream end a collar having a free end remote from the axis of the injection system by a first distance greater than a second distance separating a rim of the injector port from the axis.

The present invention relates to a method for biomolecule immobilization, comprising: providing a substrate; forming a surface modification layer of carboxy groups on one surface of the substrate, wherein the process for forming the surface modification layer comprises plasma surface modification; and providing pluralities of biomolecules and bonding the biomolecules with the surface modification layer. Accordingly, the method for biomolecule immobilization of the present invention can reduce manufacturing time and enhance the stability of manufacture. In addition, the method can be employed in a biosensor to efficiently enhance sensitivity of the biosensor.

The invention relates to a method of utilizing a thermogravimetric analyzer to evaluate coal and biomass coke reactivity. The method mainly solves the problems that comprehensiveness and accuracy of existing coke combustion / gasification reactivity evaluation indexes are insufficient and can better achieve reasonable representation of coal and biomass coke combustion / gasification reaction activity.The method comprises the steps: firstly, obtaining a specific reaction rate curve capable of effectively reflecting sample activity; then choosing a plurality of feature points on the curve; finally,constructing reaction comprehensive indexes capable of comprehensively and accurately representing sample reaction activity through organic combination of corresponding parameters of the feature points. The reaction comprehensive indexes are combined with a plurality of parameters capable of reflecting all aspects of sample combustion / gasification behaviors, difficulty and an intensity degree ofsample intrinsic combustion / gasification reaction occurrence can be comprehensively represented, and the reaction comprehensive indexes are more ideal indexes for comprehensively evaluating coal and biomass coke intrinsic reaction activity.

The invention relates to a method for modifying a molecular sieve, which comprises the steps of: firstly, extracting an organic template agent in molecular sieve raw powder containing the organic template agent on an extraction device by using an organic agent; and then carrying out ion exchange on the extraction device by using an acid solution, and translating into a hydrogen type molecular sieve, wherein no roasting step exists in the method of modifying the molecular sieve. The method provided by the invention has the advantages of high degree of crystallization, high modifying efficiency, no pollution and the like.

The invention relates to a preparing method for concentrated milk protein powder used for producing semitransparent and transparent milk beverages. The preparing method includes the steps that after a concentrated milk protein solution is decalcified, the pH value is adjusted until the solution is neutral, and then the decalcified concentrated milk protein powder is prepared through evaporation, concentration and spray drying. The preparing method has the advantages that two kinds of cation exchange resin used in the preparing method are different in decalcification efficiency and suitable for low-intensity decalcification and high-intensity decalcification respectively; the water redissolving transparency of the concentrated milk protein powder obtained after decalcification is remarkably improved along with increase of the decalcification rate, the concentrated milk protein powder can serve as a basic material of the semitransparent and transparent milk beverages, preferably, the concentrated milk protein powder with the decalcification rate of 40-60% is selected to produce the semitransparent milk beverage, and the concentrated milk protein powder with the decalcification rate of 60-90% is selected to produce the transparent milk beverage.