38results about How to "Keep for a long time" patented technology

The present invention discloses a residual current operated circuit breaker, belonging to the technical field of low-voltage electrical appliances. The residual current operated circuit breaker includes an electric leakage tripping pole module, and an L-pole circuit breaker module and an N-pole circuit breaker module disposed on both sides of the electric leakage tripping pole module, wherein the L-pole circuit breaker module includes an L-pole moving contact mechanism; the N-pole circuit breaker module includes an N-pole moving contact mechanism; the electric leakage tripping pole module includes an electric leakage jump buckle, an electric leakage lock buckle, a resetting member, a rocker arm, an assembling shaft and a tripping device; the rocker arm abuts against the resetting member; the assembling shaft is in linkage with the L-pole moving contact mechanism and the N-pole moving contact mechanism; the rocker arm is connected to one side of the electric leakage lock buckle; at least one of the rocker arm and the electric leakage lock buckle can abut against the assembling shaft; and when the electric leakage jump buckle is separated from the electric leakage lock buckle, the resetting member drives the rocker arm to rotate, so that at least one of the rocker arm and the electric leakage lock buckle pushes the assembling shaft. The L-pole circuit breaker module and the N-pole circuit breaker module are disconnected at the same time, and thus the disconnection capacity is improved.

The invention relates to a preparation method of peppermint essence, which solves the problems of quick volatilization and poor durability of the traditional peppermint essence by optimizing the combination of essence components and a slow-release carrier by adopting a multi-layer microcapsule slow-release technology and a nanocapsule technology. According to the method, essence components such as menthol, menthone and leaf isovalerate are mixed with at least two layers of microcapsules, the outer layer microcapsules slowly release fragrance, the inner layer microcapsules quickly release fragrance, and it is ensured that the fragrance is kept for a long time in the using process. Meanwhile, the essence is uniformly dispersed in different carrier systems through ultrasonic-assisted emulsification by adopting a nanocapsule technology, so that the stability and dispersity of the essence are improved. In addition, the temperature-responsive and pH-responsive polymer materials are introduced, so that the release rate of the essence can be adjusted according to the external environment, and the adaptability of the essence is further enhanced.

A support structural member and a display device are provided by the present application. The support structural member includes: a support frame, having a screen body support surface, in which the support frame includes a first sliding support member and a second sliding support member arranged opposite to each other, and the first sliding support member and the second sliding support member are movably connected in a first direction; a driving portion, including a first driving mechanism, in which the first driving mechanism is configured to drive the first sliding support member and the second sliding support member to move relatively to each other in the first direction to drive the first sliding support member and the second sliding support member approach to or far away from each other. The present application can increase the stretching- and-shrinking speed of the support frame, and further can increase the unfolding speed and the storage speed of the display device.

The application relates to the technical field of heat exchange, and discloses a column-tube type heat exchanger for fluid heat exchange, which comprises a shell, the inside of the shell is uniformly distributed with inner mounting plates, the outside of the inner mounting plates is rotationally connected with outer mounting plates, the inside of the shell is provided with two inner end plates, the outside of the inner end plates is rotationally connected with outer end plates, the outside of one side of the outer end plates is fixedly connected with a ratchet wheel, the inside of the other side of the outer end plates is rotationally connected with a fixing frame, the upper end of a driving bin two is slidably connected with a sliding shaft, and the upper end of the sliding shaft is fixedly connected with a limiting block. Through the relative rotation of the outer mounting plates and the inner mounting plates, the window area and the flow position of the clear water flow channel formed between the outer mounting plates and the inner mounting plates continuously and dynamically change, the clear water in the shell is forced to continuously change the flow direction, the clear water is prevented from long-term flowing through the local heat exchange area along the fixed flow channel, the outer surfaces of all the heat exchange tubes can be fully contacted with the low-temperature clear water, and balanced and deep heat exchange of the whole tube area is realized.

The present invention relates to an antibody directed against a vascular endothelial growth factor (VEGF / VEGF-A) and angiopoietin-2 (ANG-2), respectively, a bispecific binding molecule (e.g., an antibody) directed against the vascular endothelial growth factor (VEGF / VEGF-A) and angiopoietin-2 (ANG-2) simultaneously, a preparation method therefor, a pharmaceutical composition comprising the antibody or molecule, and use thereof.

[PROBLEM] To provide a conjugate of an antibody and a functional substance or a salt thereof excellent in desired properties while controlling a binding ratio between the antibody and the functional substance within a desired range. [MEANS FOR SOLVING PROBLEM] A conjugate of an antibody and a functional substance or a salt thereof, which comprises a structural unit represented by the following formula (I): wherein Ig represents an immunoglobulin unit comprising two heavy chains and two light chains, and regioselectively forms an amide bond with a carbonyl group adjacent to Ig via an amino group in side chains of lysine residues in the two heavy chains, L1 and L2 each represent a divalent group, R1 represents a monovalent group optionally comprising a hydrophilic group, X represents a predetermined divalent group, D represents a functional substance, RA represents a side chain of a valine residue, RB represents a side chain of a citrulline residue or an alanine residue, n is 0 or 1, and an average ratio r of the amide bonds per two heavy chains is 1.5 to 2.5, and wherein at least one hydrophilic group is present in the structural unit.

The utility model relates to the technical field of bearing measuring tools, in particular to a large-scale thrust self-aligning roller bearing raceway measuring tube ruler. The end face positioning pipe ruler head is detachably fixed to the pipe ruler body and provided with an end face fulcrum used for abutting against the end face of the ferrule. The raceway positioning pipe ruler head comprises a positioning fulcrum assembly hinged to the positioning moving rod, and the positioning fulcrum assembly comprises a positioning raceway supporting rod capable of rotating relative to the positioning moving rod so that the positioning raceway supporting rod can perpendicularly abut against the ferrule raceway. The raceway measuring tube ruler head comprises a measuring fulcrum assembly hinged to the measuring moving rod, and the measuring fulcrum assembly comprises a measuring meter fixing piece capable of rotating relative to the measuring moving rod so as to fix a measuring meter and enable the measuring end to make vertical contact with the ferrule raceway. According to the utility model, the rotation angles of the positioning raceway support rod and the measuring meter can be adjusted, the contact angle with the raceway is 90 degrees during measurement, the detection precision is improved, the product quality is improved, the retainer fitting process can be canceled, and the production efficiency is improved.

An object of the present invention is to provide a surface treatment agent that is excellent in antithrombogenicity and biocompatibility and has higher hydrophilicity compared to conventional medical materials. The present invention is an antithrombogenic material containing a (meth)acrylate copolymer consisting of a hydrophobic (meth)acrylate and a hydrophilic (meth)acrylate, in which the hydrophobic (meth)acrylate is a silicone (meth)acrylate and / or an alkyl (meth)acrylate, the (meth)acrylate copolymer having a residual monomer content of 4,000 ppm or less, a reduced viscosity (ηsp / c) of 0.18 dl / g or more and 3.00 dl / g or less, and being water-insoluble, and being a viscous liquid at room temperature.

The embodiment of the application discloses an asynchronous clock domain data read-write method and a first-in-first-out cache system, relates to the technical field of integrated circuits, and is invented to reduce the read-write data delay between asynchronous clock domains. The method comprises the following steps: writing to-be-written data into a write address; using the rising edge and the falling edge of a write clock of a write clock domain to sample the write address respectively, so as to obtain a rising edge address corresponding to the rising edge of the write clock and a falling edge address corresponding to the falling edge of the write clock; determining a to-be-synchronized address according to a predicted phase value, the rising edge address and the falling edge address; the predicted phase value is determined according to the phase difference between the write clock and a read clock in the mth write clock period; taking the to-be-synchronized address as the input of a first flip-flop, sampling the to-be-synchronized address through the read clock, and obtaining a synchronized address synchronized to the read clock domain; and reading the data in the first-in-first-out memory based on the synchronized address. The application is suitable for transmitting data.

The invention relates to a method for the depolymerization of a terephthalate polyester, for example a PET polymer. The method comprises the steps of: a) contacting a terephthalate polyester with methanol and dimethyl terephthalate, DMT; and b) heating the mixture of the terephthalate polyester, methanol and DMT in the presence of a catalyst suitable for catalyzing the depolymerization of the terephthalate polyester.

The present disclosure provides a wafer processing device, a wafer processing system and a control method. The wafer processing device includes a driving unit, a transfer chamber, a plurality of process chambers and a bearing assembly; the bearing assembly is arranged in the transfer chamber, the process chamber is coupled to the transfer chamber, the process chamber is used for processing wafers, the bearing assembly is used for supporting the wafer, the driving unit is used for adjusting a position of the bearing assembly in the transfer chamber, and the driving unit is further used for driving the bearing assembly to move between the transfer chamber and the process chambers. The wafer processing device of the present disclosure can directly transport the wafers to be processed to the process chambers by the driving unit for the processing treatment, and can retain or transfer the wafers to be transferred or not to be directly processed in the transfer chamber, thus reducing the time of wafers occupying the working station due to different groups of wafers waiting for process, which will speed up the processing efficiency of the wafers and provide basic conditions for synchronously processing groups of wafers by the transfer chamber and the bearing assembly.

A charging method of an energy storage power supply, a charging apparatus therefor, a device and a medium are provided. The charging method includes: obtaining a voltage of each of a plurality of cells in a battery pack of a battery module; and charging the battery module by selecting, based on a minimum voltage among the voltages of the plurality of cells, a corresponding charging scheme. The corresponding charging scheme includes a first charging scheme and a second charging scheme.

By changing the traditional carrying method and backpack straps, the deltoid muscles of the shoulders are used as the load-bearing points of the backpack. Through the combination of shoulder pads (1), shoulder pad air cushions (2), three-way backpack straps (3) and other accessories, the vertical load-bearing mode of the trapezius muscles of the shoulders is changed to the three-way load-bearing mode of the deltoid muscles of the arms. Three key innovative technologies are used to avoid the trapezius muscles, which are prone to fatigue when under load, and to transfer the weight of the backpack to the deltoid muscles of the shoulders, forming a three-way load distribution carrying system on the shoulders and chest. This makes the trapezius muscles of the shoulders no longer feel sore when carrying heavy objects, allowing us to carry heavy items for a long time. When carrying more items and outdoor equipment such as tents during outdoor rescue, field research, hiking, etc., it feels easier, the carrying time is longer, and more items can be carried.

The present application discloses an artificial graphite, a preparation method therefor and the use thereof. A method for preparing an artificial graphite of an embodiment of the present application comprises the following step: subjecting a graphite raw material to a heat treatment to obtain the artificial graphite, wherein an environmental atmosphere for the heat treatment is at least one gas of air and carbon dioxide or a mixed gas of at least one gas of air and carbon dioxide and a chemically inert gas; and during the heat treatment, the graphite raw material is in a static state. The method for preparing an artificial graphite of an embodiment of the present application realizes at least modifying a surface of the graphite raw material by controlling the heat treatment conditions for the graphite raw material, such that the prepared artificial graphite has an appropriately low compaction rebound capacity, a high and stable compacted density, and a good cycling performance. The artificial graphite of the present application can be used as a negative electrode active material and used in negative electrodes and batteries.

The utility model discloses an electric bicycle hub motor and wheel structure beneficial to sliding. The electric bicycle hub motor and wheel structure comprises a motor and a rim. The motor comprises a motor main shaft and a motor shell, and the motor shell is rotatably mounted on the motor main shaft; the device further comprises a one-way clutch component and a motor mounting box. The motor mounting box comprises a rim shell and a rim shell cover; the motor is mounted in the motor mounting box, and the rim shell and the rim shell cover are rotatably mounted on a motor main shaft; the rim is fixedly connected with a rim shell of the motor mounting box through a connecting piece; the one-way clutch component is connected between the motor shell and the rim shell cover. The electric bicycle has the advantages that when the motor stops working during downhill sliding of the electric bicycle, the friction coefficient between the wheel and the motor is extremely low, the wheel can continuously and freely rotate inertially, and the motor cannot be driven to rotate even if the wheel is driven to rotate during riding, so that the inertia sliding time is long, and the sliding distance is long.

Disclosed is a method for preparing paraxylene by biomass conversion, comprising the following steps: (1) contacting a biomass starting material with a hydrogenation catalyst for reaction in a multiphase system formed by an organic solvent, an inorganic salt and water, in the presence of hydrogen as a hydrogen source, and separating the resulting product to obtain an organic phase comprising 2,5-hexanedione; and (2) contacting the organic phase comprising 2,5-hexanedione obtained in the step (1) and ethylene with a molecular sieve catalyst for reaction to obtain paraxylene, wherein the molecular sieve catalyst is at least one selected from the group consisting of aluminophosphate molecular sieves and SCM-14 molecular sieves. The method is simple in operation, has the advantages of high product selectivity, good catalyst stability, easy product separation, few reaction steps and short time, and can realize green and efficient conversion from biomass to pX.

The present invention relates to a method for preparing nano ZrO2 / HfO2 and metal nanoparticles. Firstly, an initial alloy mainly composed of Zr / Hf and Al / Zn is prepared using metal raw materials; Dissolve the initial alloy in a hot alkaline solution to obtain an intermediate solution; Then reduce the alkaline concentration or (and) temperature of the intermediate solution to allow the solid flocculent products containing Zr / Hf to precipitate from the intermediate solution after the concentration or (and) temperature is reduced, resulting in low crystalline nano ZrO2 / HfO2; By further heat treatment, crystalline nano ZrO2 / HfO2 was obtained. When precious metal elements are dissolved in the initial alloy, this method can also be used to prepare metal nanoparticle doped nano ZrO2 / HfO2; After removing the nano ZrO2 / HfO2 from the composite product, metal nanoparticles were further prepared.

The present invention aims to provide a thermoplastic polyester elastomer having particularly excellent extrusion moldability and extrusion molding stability, from which a hollow and long molded article can be stably produced with a uniform thickness for a long time. A polyester elastomer comprising a hard segment made of a polyester constituted of an aromatic dicarboxylic acid and an aliphatic or alicyclic diol and a soft segment made of an aliphatic polycarbonate, wherein the hard segment and the soft segment are bonded to each other, wherein the polyester elastomer is at least partially end-capped with a reactive compound, wherein the reactive compound comprises a polycarbodiimide, wherein the polyester elastomer has an acid value of 15 eq / ton or less, and wherein, under a condition of 230°C, the polyester elastomer satisfies (i) the melt viscosity at a shear rate of 10 / sec after a preheating time of 5 minutes is 1, 800 Pa·s or more, and the melt viscosity at a shear rate of 1,000 / sec after a preheating time of 5 minutes is 800 Pa·s or less; and (ii) a ratio of the melt viscosity measured at a shear rate of 10 / sec after a preheating time of 5 minutes to the melt viscosity measured at a shear rate of 10 / sec after a preheating time of 25 minutes is 0.7 to 1.3.

The invention relates to the technical field of underground water monitoring, in particular to a porous material for underground water monitoring and a preparation method and application thereof. The preparation method of the porous material provided by the invention comprises the following steps: mixing hydrophobic modified sodium alginate, charcoal, a mineral material, a pore-forming agent and a stabilizer to form a mixed solution; dropwise adding the mixed solution into a metal salt solution, and performing heat treatment to obtain the porous material. Hydrophobic modified sodium alginate is used as a capsule wall, a mineral material is used as a supporting structure, the hydrophobic modified sodium alginate and the mineral material are compounded with charcoal, a composite material is formed in a metal salt solution, and in the heat treatment process, the composite material forms a porous material with multiple pore channels under the action of a pore-forming agent; the porous material can prolong the retention time of the porous material in water by utilizing the characteristic of low solubility of hydrophobic modified sodium alginate in water, adsorbs microorganisms in water by utilizing the adsorption performance of biochar, and provides more active sites for attachment of the microorganisms at the same time.

In a method for manufacturing a stator, a stress removing step is performed that is a step of removing residual stress in a laminated core caused by a stamping process by generating heat in the laminated core by applying a current to an induction heating coil placed in each of a plurality of slots.

The present disclosure provides a negative electrode plate, a preparation method and application thereof. A negative electrode active material of the negative electrode plate includes a first amorphous carbon material. An interlayer spacing (d002) of the first amorphous carbon material is greater than 0.34 nm, and an average pore diameter of pores of the first amorphous carbon material ranges from 2 nm to 20 nm. The negative electrode plate can help improve energy density of a lithium-ion battery and suppress expansion of an electrochemical energy storage apparatus during cycling.

The utility model provides a vegetable weeder, belongs to weeder equipment technical field, the vegetable weeder includes shell, motor, shaft and weeding blade group, the shell is used for placing motor, shaft and weeding blade group, the motor is placed on the inside one side of shell, the output shaft is fixed connection with shaft, the inside of shaft is hollow structure, and the shaft is equipped with the weeding blade group. The side wall is fixedly connected with the weeding blade group, the weeding blade group is used for removing weeds, and a plurality of water outlet holes are formed in the center of the weeding blade group on the side wall of the rotating shaft and used for removing soil impurities adhered to the weeding blade group; one side of the rotating shaft is fixedly connected with the motor, the other side of the rotating shaft is rotationally connected with the water inlet, and the rotating shaft is rotationally connected with the water inlet through a rotating joint; the vegetable weeding machine blade can solve the problem that the blade is not easy to clean after being used, and is convenient to clean.

The application discloses a cholesteric liquid crystal display circuit, a driving method thereof and electronic paper, and relates to the technical field of cholesteric liquid crystal display. The voltage time sequence of the gate drive circuit, the source drive circuit and the common electrode end is set. In different time periods, when the corresponding pixel is in a liquid crystal torsion state, the gate-source voltage of the switching transistor is the same; when the corresponding pixel is in a liquid crystal non-torsion state, the gate-source voltage of the switching transistor is the same. In different time periods, when the corresponding pixel is in a liquid crystal torsion state, the source electrode voltage of the switching transistor is greater than the common electrode end; when the corresponding pixel is in a liquid crystal non-torsion state, the source electrode voltage of the switching transistor is less than the common electrode end. Not only the size relationship between the source electrode voltage of the switching transistor and the voltage of the common electrode end is switched to prevent liquid crystal polarization, but also the bistable failure, the reflectivity reduction or the state mis-switching of the cholesteric liquid crystal display panel caused by the leakage in the long-time static keeping process can be inhibited, the picture keeping time is prolonged, and the display reliability is improved.

Provided is a method for producing a joined body, including a pre-joining step in which a base material A, a solid joining agent containing an amorphous thermoplastic resin, which is at least one of a thermoplastic epoxy resin and a phenoxy resin, as a main component, and a base material B are disposed in this order to prepare a laminated body, and a joining step in which the solid joining agent is melted by heating and pressurizing the laminated body to join the base material A and the base material B, in which an epoxy equivalent of the amorphous thermoplastic resin is 1,600 or more, or the amorphous thermoplastic resin does not contain an epoxy group, and a heat of fusion of the amorphous thermoplastic resin is 15 J / g or less.

A non-heat treated steel for a crankshaft of the present invention comprises iron (Fe) as a main component and also comprises 0.37 to 0.43 mass % of carbon (C), 0.15 to 0.35 mass % of silicon (Si), 0.90 to 1.30 mass % of manganese (Mn), 0.08 to 0.15 mass % of vanadium (V); and the content of phosphorous (P) is 0.030 mass % or less, the content of copper (Cu) is 0.300 mass % or less, the content of nickel (Ni) is 0.30 mass % or less, and the content of chromium (Cr) is 0.35 mass % or less. The non-heat treated steel also comprises 0.010 to 0.035 mass % of sulfur (S) and 0.02 to 0.05 mass % of bismuth (Bi), which are machinability-improving elements. Thus, the non-heat treated steel has a high fatigue strength and a high yield strength and also has an excellent machinability.

The utility model discloses a kind of gold stamping foil with microstructure texture, it is related to hot stamping material technical field, it aims at solving the process of traditional gold stamping foil in use, for the lack of deformation allowance of curved surface, special-shaped printing material, lead to rupture, wrinkle in hot-pressing process due to local excessive stretching, it is easy to produce the problem, including base paper component and metal foil component, the top of base paper component is provided with metal foil component;The base paper component includes base paper film, the top of base paper film is provided with sticky glue layer;The metal foil component includes the base film layer being set in the top of sticky glue layer, the top of base film layer is provided with gold foil wrinkle, the bottom of base film layer is provided with protruding anchor point, and the protruding anchor point penetrates sticky glue layer.The utility model is designed through base paper component and metal foil component, can be adapted to curved surface, special-shaped printing material, reduce the risk of stretching rupture.

The present invention relates to a pharmaceutical combination comprising a PCSK9 inhibitor and a GLP-1 receptor agonist; The invention also relates to the use of the pharmaceutical combination in preparing drugs for treating hyperglycemia, diabetes, obesity and / or cholesterol related diseases.

The present application relates to the technical field of biomedical materials, in particular to a hyaluronic acid composite polysaccharide composition, a preparation method and application thereof. Specifically, by introducing other high-molecular mucopolysaccharides on the basis of hyaluronic acid cross-linked chondroitin sulfate (HA-CS), the present application can form an interpenetrating network structure with HA-CS through electrostatic interaction, or linear polysaccharide chains can form hydrogen bonds with the hydroxyl and carboxyl groups of HA-CS, further forming a dense network structure, enhancing the adhesion of the material to the bladder mucosa, reducing the risk of loss with urine, and prolonging the retention time of the temporary protective layer; at the same time, the synergistic effect between the various composite polysaccharide components increases the stability of the material itself, improves the residence time of the composition on the surface of the bladder mucosa, enables it to continuously exert a protective and repairing effect, and effectively promotes the repair of bladder mucosal injury, thus having good practical application value.

The utility model provides a sealing structure of an oil injection needle valve and an oil injection nozzle cavity, which improves the original surface sealing into linear sealing, increases the sealing pressure, ensures the sealing reliability and reduces the processing difficulty. The oil injection needle valve comprises a guide section and a needle valve section, and a needle valve head is arranged at the bottom of the needle valve; an oil guide cavity, a conical closing cavity and an oil spraying cavity are formed in the oil spraying nozzle; the conical closing cavity is a conical surface with the closing angle of alpha degrees inwards from top to bottom, the needle valve head comprises a first conical surface with the closing angle of beta degrees and a second conical surface with the closing angle of gamma degrees corresponding to the conical closing cavity, values of alpha, beta and gamma are angulation values corresponding to the vertical middle vertical plane, beta is smaller than alpha, gamma is larger than alpha, and the first conical surface is a conical surface with the closing angle of alpha degrees. And the first conical surface and the second conical surface are combined to form a circular ring line for sealing the conical closing cavity.