767results about How to "Guarantee structure" patented technology

An apparatus and method for safely cannulating a blood vessels, including but not limited retinal blood vessels, is described. In one embodiment, the apparatus can consist of a micropipette/microcannula, micromanipulator and positioner mounted to a base, which is attached to a wrist rest commonly used in eye surgery. The micropipette/microcannula is connected to tubing such that a medication may be injected through the micropipette/microcannula into the blood vessel or conversely, a small quantity of material may be removed from a blood vessel. Alternatively, a catheter, wire or stent may be placed through the micropipette/microcannula to treat or diagnose an area remote from the insertion site. The ability to cannulate a retinal blood vessel should be efficacious in the treatment of vein and artery occlusion, ocular tumors and other retinal, vascular and optic nerve disorders that would benefit from diagnosis and/or treatment. In another embodiment, a self-sealing needle is provided which allows the perforation of a blood vessel or other structure and the minimization of hemorrhaging when the needle is withdrawn from the blood vessel/structure. Another embodiment discloses an ocular implant needle.

To deal with climate change, the present invention provides an eco-engineering for systematic carbon mitigation, in particular, a comprehensive carbon management system with a group of Stabilized Functional Carbons (SFCs) to reduce the total amount of carbons in atmosphere. SFCs are sourced and manufactured from the carbon-fixed biomass by one of the seven thermo-chemical treatments or one dehydration treatment with no less than 75% carbon conversion rates of the source material. The present invention transforms the perishable biomass into SFCs, which act as a carbon sink with stability and safety for at least 40 years' storage. The primary eco-friendly carbon and non-carbon mitigation are achieved by the sourcing, manufacturing and storage of SFCs. The advanced eco-friendly carbon and non-carbon mitigation are achieved at various pollution emission sources by the resource utilization of SFCs. An annual total amount of 0.5-10 billion tons of carbon emission could be reduced globally.

The present invention relates to an explosion-proof safety structure for column shape lithium battery, particularly relates to a safe and explosion-preventing structure which prevents the battery from ignition or explosion caused by the condition of overcharging described as follows: while the lithium battery is under overcharging condition, a sudden rise of the battery internal temperature takes place and the pressure increases; at the beginning of the sudden rise of temperature, the internal resistance value of the positive temperature coefficient of resistivity board redoubles to slow down the input of current; when the temperature keeps on rising, the electrolyte starts to gasify so as to increase the internal pressure of the battery up to a level which exceeds what the breaker sheet thin portion can take, the thin portion of the breaker sheet breaks to cause an open charging circuit and the charging activity stops; however, the battery internal pressure can not be released, which once exceeds the break pressure of the safety valve, the safety valve explodes to release the pressure.

The invention relates to an exposed slope ecological restoration construction method using fermented sludge as a medium. The exposed slope ecological restoration construction method comprises the steps of: paving ecological rods on a slope surface of a slope in a contour manner and fixing the ecological rods through anchor rods; after the pavement of the ecological rods, performing bidirectional geogrid pavement to enable the bidirectional geogrid to cover the slope surface of the whole slope, and fixing the bidirectional geogrid on the slope surface of the slope through the anchor rods; spraying an underlying substrate on the slope surface where the ecological rods and the bidirectional geogrid are paved to enable the underlying substrate to cover the whole slope surface and the outer surfaces of the bidirectional geogrid and the ecological rods; after the underlying substrate is basically solidified, spraying a seed layer to enable the seed layer to cover the whole underlying substrate. The provided method achieves very obvious water and soil conservation effects and remarkable ecological fixation function on the slope, simple construction process, easy implementation, high efficiency and good effects, is suitable for large-area application, and has an obvious effect of optimizing the ecological environment and long-term significance.

The invention discloses a method for identifying the aging degree of a silicon rubber composite insulator. The method comprises the following steps: determining the states of umbrella skirt test samples of the silicon rubber composite insulator by taking the operating age limit as reference, and selecting a sample area of each state to obtain an average-value test sample of each state; sampling and cutting into slices; performing microscopic infrared scanning on the slices by taking silicon methyl 1296 cm<-1> as a calibrated peak to obtain microscopic infrared micro-area scanning images of the slices with different age limits; calculating the ageing depth H value from the microscopic infrared micro-area scanning images, fitting the relationship between the H value of the samples with different age limits and time to obtain an ageing model; quantitatively identifying the ageing degree of an unknown sample according to the ageing model. According to the method, the ageing degree of the silicon rubber composite insulator can be quantitatively analyzed by a microscopic infrared Mapping scanning technology; the change of the silicon rubber composite insulator from the surface to the center along with ageing can be observed; the visualization degree is high.

The invention discloses a seismic signal restoration algorithm based on tensor nuclear norm regularization. The method comprises the following steps: S1, constructing an objective function based on Hankel tensor nuclear norm regularization; and S2, solving the objective function by using an ADMM algorithm. According to characteristics of correlation, redundancy and low rank of the pre-stack seismic signal, the invention provides a Hankel tensor nuclear norm regularization method to reconstruct missing seismic data. With a HTR-SVD decomposition method, a Hankel matrix construction mode is applied to a tensor nuclear norm, so that the correlation of a tensor data block is increased, the low-rank performance of the tensor data block is improved, and a problem that a pre-stack seismic signal can not be restored because of lack of a tangent plane is solved; and thus work area data selected randomly can be processed by the method, so that the the robustness and adaptability of processing themissing seismic data are improved. While filling of missing data is carried out, noises in signals are suppressed, so that the signal to noise ratio of the signals is increased.

The invention relates to a carbon ceramic braking pad for a high-speed train and a preparation method of the carbon ceramic braking pad. The carbon ceramic braking pad is made of carbon ceramic composite material; the carbon ceramic composite material comprises the following components in percentage by mass: 16-30 percent of carbon fibers, 20-36 percent of pyrolytic carbon, 28-46 percent of silicon carbide, 6-12 percent of molybdenum disilicide and 2-6 percent of simple substance silicon; the density of the carbon ceramic composite material is 1.8-2.4g/cm<3>; the carbon fibers are uniformly distributed in the carbon ceramic composite material in a three-dimensional network structure. According to the invention, after the high-temperature heat treatment is performed on a carbon fiber felt with the density of 0.20-0.65g/cm<3>, the pyrolytic carbon is generated in the carbon fiber felt through the thermal-gradient chemical vapor deposition carburizing treatment, then the catalytic graphitization treatment, non-immersion type melting infiltration and assembly are performed, so that the carbon ceramic braking pad for the high-speed train is obtained.The carbon ceramic braking pad is simple in preparation technology, moderate in friction coefficient, good in abrasion performance, stable in braking and strong in environmental suitability and can meet braking requirements of the high-speed train with the speed of 200Km/h.

Disclosed herein is a battery pack including a power supply unit including two or more battery cells or battery modules electrically connected to each other, at least one pressure driven switch configured to cause a short circuit in a portion or the entirety of the battery pack upon detecting expansion in volume of the battery cells or the battery modules when the power supply unit malfunctions, a cut-off portion located at at least one series connection region between the battery cells or the battery modules to interrupt electrical connection in the battery pack when the short circuit occurs in the battery pack, and external input and output terminals connected to electrode terminals located at outermost sides of the power supply unit to supply power to an external device.

The invention discloses composite high-strength lead-free brazing filler metal for electronic packaging and a preparation method thereof. The composite high-strength lead-free brazing filler metal comprises graphene and lead-free brazing filler metal. The preparation method includes the steps of firstly, dispersing the graphene and lead-free brazing filler metal powder in ethyl alcohol under the ultrasonic action, and subjecting the ethyl alcohol solution with the graphene and the lead-free brazing filler metal powder to ball milling mixing; secondly, performing vacuum drying to obtain mixed powder of the graphene and the lead-free brazing filler metal powder; thirdly, placing the mixed powder of the graphene and the lead-free brazing filler metal powder into a mould to be squeezed to form a precast block, placing the precast block along with the mould in a vacuum furnace to sinter for 3 hours at the temperature of 180 DEG C, and demoulding to obtain the composite high-strength lead-free brazing filler metal. The composite high-strength lead-free brazing filler metal for electronic packaging and the preparation method thereof have the advantage that the problem that a lead-free brazing filler metal welding spot of an existing electronic product needs to bear high strength under working is solved.

The invention discloses a lightweight calcium hexaluminate-magnesia alumina spinel composite microporous refractory aggregate for lightweight refractory castables and a preparation method thereof. The lightweight calcium hexaluminate-magnesia alumina spinel composite microporous refractory aggregate is obtained by taking 3 to 7 weight percent of lime, 12 to 18 weight percent of magnesite and 75 to 85 weight percent of industrial aluminum hydroxide as initiative materials, adding a binding agent in an amount which is 3 to 6 percent of the total weight of the initial materials, performing wet co-grinding and machine molding, drying a green body and then calcining the green body, and crushing a product obtained after calcination. The lightweight microporous aggregate has the advantages of high stability in reducing atmosphere and alkaline environment, excellent thermal shock resistance and thermal insulation property and the like, so that the service life of the material is prolonged andthe loss of energy consumption is reduced.

A wind turbine system is disclosed, such wind turbine includes a wind turbine generator, a plurality of turbine blades radially extended from the generator and a wind-catching unit is provided for circularly sheltering the generator, wherein the wind-catching unit comprises a plurality of wind suction channels completely covering four sides and arranged in a side by side manner. Each of the wind suction channels has a wind inlet for sucking wind from outside, a wind outlet towards the generator blades, and a gradually reduced cavity communicating the wind inlet and wind outlet so as to generate a turbulent pressure between the wind inlet and wind outlet in such a manner that when wind from a direction is caught by the respective wind suction channel, the caught wind will be compressed through the gradually reduced cavity so as to effectively blow out from the wind outlet to rotate the generator.

The invention provides a biodegradable algae liquid plastic film, which is characterized by comprising the following components in parts by weight: 100 parts of algae extract, 2-10 parts of polyacrylate alginate jelly resin, 50-70 parts of lignosulfonate, 10-20 parts of humic acid, 20-30 parts of molasses or biochemical fulvate or a mixture of molasses and biochemical fulvate at a weight ratio of 1: 2, 10-20 parts of carboxymethyl cellulose and 300-500 parts of water. In addition, the invention also provides a preparation method of the algae liquid plastic film.

The invention relates to an electric locomotive roof assembly and welding tool, which comprises an integral frame, a gantry and a cylinder, wherein the integral frame consists of a reinforcing ribbed plate, a main beam, an edge beam, a bottom plate and a side wall board; the side wall board and the bottom plate form an inclination angle; a sliding track for mounting the gantry is arranged outside the side wall board; the gantry is provided with a movable cylinder fixing frame and is used for eliminating welding gap between an aluminum plate and the frame to guarantee welding quality; and the effect of reducing welding deformation is reduced by forming rigid fixing force for the aluminum plate and the frame. Side wall pressing cantilevers are uniformly distributed outside the edge beam; and the reinforcing ribbed plate is provided with a positioner connecting pipe. The interference between a product and the tool is eliminated in a movable pressing and fixed pressing combined mode, so that all products can be welded on the tool at one time. The working efficiency is increased. All positioning devices are used for quick and accurate positioning. The stability of the tool is effectively guaranteed, and the product quality requirements are met.

The invention relates to preparation of cyclodextrin bonded stationary phase, in particular to a method for preparing cyclodextrin bonded stationary phase by taking click chemistry as bonding reaction process. The preparation method comprises two steps: firstly introducing triazo- or alkynyl onto the surface of silica gel by silane coupling agent to prepare triazo-silica gel derivative or alkynyl silica gel derivative, then carrying out 1,3-cycloaddition reaction on triazo- and alkynyl, namely, click chemistry, in aqueous solution at 20-80 DEG C for 24-72 hours, and binding cyclodextrin decorated with alkynyl or triazo- onto the surface of silica gel. The bonding reaction provided in the invention has high selectivity, can maintain cyclodextrin structure well, so that the preparation method is simple and broad in application range, the surface binding amount of the prepared cyclodextrin bonded stationary phase is high, is suitable to be as high performance liquid chromatography separation material, and especially suitable for separating strongly polar compound in hydrophilic liquid chromatography mode.

The invention discloses a preparation method of the acellular dried active amnion, comprising the following steps: (1) material processing: taking a human placenta which passes the detection of pathogen and obtained from a full term cesarean section, washing the human placenta with aseptic normal saline, removing blood components from the human placenta, blunt dissecting the amnion from the human placenta perfectly, striking off matrix components from the amnion substrate with a cell curet; (2) repeatly freezing and thawing; (3) washing; (4) freeze drying; and (5) disinfecting and sterilizing with gamma-ray. The method adopts the combination of repeat freeze-thaw method and using decontaminating agent to remove amnion cells, overcomes the defects of bad effects of removing cells by using freeze-thaw method alone, removes amnion cells effectively, keeps the integrity of collagen structure and basement membrane in tissue well, and keeps good mechanical property and no cytotoxicity.

The invention relates to a method for preparing modified loess with high adsorption performance. The method comprises the following steps of: (1) after stirring loess, distilled water and acrylic acid uniformly under room temperature, dropwise adding a NaOH solution with neutralization being 40-90% for neutralization to obtain a neutralization solution; (2) then adding hydroxyethyl methacrylate to the neutralization solution and stirring the materials uniformly to obtain mixed liquor; and (3) adding a crosslinking agent glycidyl methacrylate to the mixed liquor, heating the materials to 40-90 DEG C after introducing inert gases, finally adding an initiator ammonium persulfate, stirring the materials for 20-120 minutes when raising the temperature to 50-95 DEG C, thus generating a composite, and washing and drying the composite to a constant weight, thus obtaining the loess-based polymer composite adsorbent. The method has the following advantages that the natural loess is used as the raw material and is modified by acrylic acid and hydroxyethyl methacrylate to obtain the loess-based polymer composite adsorbent; and the loess-based polymer composite adsorbent is applied to treatment of wastewater containing heavy metal ions and dyes and has the characteristics of strong absorbability and large adsorption capacity.

The invention discloses a clapper-type double-magnetic circuit magnetic latching relay. The clapper-type double-magnetic circuit magnetic latching relay comprises a magnetic circuit part, wherein the magnetic circuit part comprises an iron core, an armature, a yoke, magnetic steel, a magnetism-conductive piece and a coil. The yoke comprises a pole surface part, a magnetism-conductive part and a connecting part; the iron core is installed in a coil hole; a pole surface is arranged at the upper end of the ion core, and the lower end of the iron core is connected with the connecting part of the yoke; the magnetism-conductive piece is opposite to the magnetism-conductive part of the yoke, and certain gaps are formed between the bottom of the magnetism-conductive piece and the connecting part of the yoke; the magnetic steel is arranged between the magnetism-conductive piece and the magnetism-conductive part of the yoke; the armature is arranged on the top of the magnetism-conductive piece, the two ends of the armature are opposite to the pole surface of the iron core and the pole surface of the yoke respectively to ensure that when the armature rotates, and the two ends of the armature can be switched alternatively between the part close to the pole surface of the iron core and the part close to the pole surface of the yoke. Due to the arrangement of a double-magnetic circuit structure, the setting state and the reset state of the magnetic circuits are almost symmetric under the condition that the magnetic circuits are not symmetric, and accordingly the balancing-type magnetic circuit structure of the magnetic latching relay is achieved.

The invention discloses a double heading control circuit device and method for implementing locomotive wireless double heading. The device comprises a double heading control circuit, wherein the double heading control circuit is provided with an electricity key interlock switch and a double heading isolating switch for controlling a double heading intermediate relay; and the double heading isolating switch is a switching unit having a function that the double heading intermediate relay is electrified to start when an electricity key signal is input. The method comprises the following steps: 1) acquiring double heading switching signals in advance by locomotives, judging whether preset conditions are satisfied, and starting the locomotives to perform wireless double heading grouping if so; and 2) in the normal operation process of the locomotives adopting wireless double heading, monitoring the state of the double heading isolating switch in real time by means of the wireless double heading control device, transmitting locomotive control signals in a wireless manner, disconnecting the double heading isolating switch, and then executing a single-unit operation mode. The device and method disclosed by the invention have the advantages of simple operation control, low required cost, no need to change the original double heading control structure and high control reliability.