82results about How to "Avoid using directly" patented technology

The embodiment of the present application discloses an authority management method and device, a mobile terminal and a storage medium, and relates to the technical field of mobile terminals. The method comprises the following steps: after device management authority of an application is activated, an acquisition request for the device management authority is monitored; when the acquisition requestfor a target authority is monitored, the authority level of the target authority is obtained, and it is judged whether the authority level is high than a preset level, wherein the target authority isan authority in the device management authority; when the authority level is higher than the preset level, prompt information whether to allow an operation corresponding to the target authority is displayed; when the instruction allowing to execute the target authority is received, the operation corresponding to the target authority is run. The authority management method and device, the mobile terminal and the storage medium provided by the embodiment of the present application increase the prompt information according to the authority level, thereby preventing the malicious program from directly using the device management authority, and improving system performance and stability.

The invention relates to a water taking device, in particular to a device for residents to take water on a reservoir dam and aims at providing a device used for residents to take water on a reservoirdam and capable of quickly pumping water in a reservoir, filtering silt and comprehensively and effectively eliminating peculiar smell in the water. For solving the technical problem, the device for residents to take water on the reservoir dam comprises an impounding frame, an L-shaped baffle, a filtering device, a second L-shaped water pipe, supporting rods, a water pumping device and the like. The impounding frame is arranged on the right side of the top of the ground, the L-shaped baffle is arranged on the left in the impounding frame, the filtering device is arranged on the left side of the bottom in the impounding frame, the left side of the filtering device is in contact with the lower portion of the right side of the L-shaped baffle, and the second L-shaped water pipe is connected to the left side of the top of the filtering device. The device prevents water from flowing back through a one-way valve, the working efficiency of the device is improved, water on the right in the impounding frame is pumped out through a second piston, the phenomenon can be avoided that residents directly use utensils to take water from the impounding frame, and water cleanliness is effectively ensured.

The invention provides a method for preparation of 2-amino-5-chloro-pyridine and belongs to the technical field of fine organic synthesis. 2-amino-5-chloro-pyridine is prepared by adopting 2-aminopyridine as a raw material and using hydrochloric acid and sodium hypochlorite for an oxidative chlorination reaction. The method mainly includes the following steps: at 10 DEG C, slowly and dropwise adding a certain amount of concentrated hydrochloric acid in a mixed solution of 2-aminopyridine and NaClO, conducting a reaction at constant temperature for 2 hours, increasing the temperature to 25 DEG C for continuing the reaction for 4 hours, regulating the pH of a reaction product, extracting the reaction product with dichloroethane, and conducting separation to obtain 2-amino-5-chloro-pyridine. The yield of 2-amino-5-chloro-pyridine is up to 72%. The method has the advantages that the cheap NaClO solution generated by chlorination of tail gas by chlorine gas and hydrochloric acid are used as chlorinating agents, the cost is thus reduced, and the comprehensive utilization of resources is achieved; the reaction conditions are mild, direct use of chlorine gas is avoided, safety is high, and pollution is little.

The embodiment of the invention discloses an authority management method, an authority management device, a mobile terminal and a storage medium, which relate to the technical field of the mobile terminals. The method comprises the following steps: when an equipment management authority of an application is activated, monitoring an acquisition request of the equipment management authority, when the acquisition request of a target authority is monitored, displaying prompt information of whether to allow execution of an operation corresponding to the target authority, wherein the target authority is the authority in the equipment management authority, and when an instruction of allowing execution of the target authority is received, running the operation corresponding to the target authority. According to the authority management method, the authority management device, the mobile terminal and the storage medium provided by the embodiment of the invention, by adding the prompt information, directly using the equipment management authority by a malicious program is avoided, and system performance and stability are promoted.

The invention discloses a metal-modified molecular sieve-based diesel oxidation catalyst which is prepared by taking a V/Mo/K ternary metal modified ZSM-5 type molecular sieve and Ag2O as main catalytic active components, CeO2 and ZrO2 as cocatalysts, and gamma-Al2O3 and SiO2 as coating base materials. The catalyst is coated in DOC, and PM, HC and CO in diesel engine exhaust can be efficiently purified. The main catalytic active component composed of a ternary metal modified molecular sieve and Ag2O is used for replacing precious metal in a traditional DOC catalyst, the raw material cost of the DOC catalyst is reduced, the sulfur resistance and thermal stability of the DOC catalyst are improved, and the purification performance of the novel DOC catalyst on carbonaceous components in PM isenhanced. The application of the ternary metal modified molecular sieve reduces the particle size of catalyst particles, increases the surface catalytic active sites of the catalyst per unit mass, andreduces the use amount of metal oxides.

The invention discloses a nervonic acid chemosynthesis method and belongs to the technical field of chemosynthesis. The nervonic acid chemosynthesis method is characterized in that methyl cis-13-docosenoate(erucate) as a raw material is subjected to reduction, chlorination, diethyl malonate condensation and microwave decarboxylation to produce nervonic acid. The nervonic acid chemosynthesis method has the advantages of simple operation, high yield and good product quality.

The invention discloses a composite electrolyte for pre-lithiation of a lithium battery and an application of the composite electrolyte. The composite electrolyte comprises an electrolyte; an additiveis added into the electrolyte; and the additive can be decomposed into lithium ions, electrons and gas under a voltage condition of 1-3V. After a battery cell is formed, the lithium ions generated bydecomposition of the additive can be used for supplementing lithium ions consumed for generating an SEI film in a battery system, meanwhile the gas generated by decomposition can be exhausted by a normal exhaust process after formation, and the battery cell is not influenced, so that the purpose of the pre-lithiation of the battery is achieved. The direct use of lithium metal is avoided, and thepotential safety hazards caused by the lithium metal are reduced. In addition, the added lithium ions are generated by the decomposition of the additive dissolved in the system and can be fully dispersed in the electrolyte, and the pre-lithiation amount can be accurately controlled through the usage amount of the additive, so that the purpose of accurate and uniform pre-lithiation can be achieved,and the cycling performance and the first coulombic efficiency of the battery can be obviously improved.

The invention relates to a medical-service reservation method. The method includes: receiving a medical-service buying identifier which is sent by a terminal and corresponds to a medical service; receiving a medical-service reservation request if the medical-service buying identifier is consistent with a pre-stored medical-service buying identifier, which corresponds to the medical service, according to comparison, wherein the medical-service reservation request carries reservation application information of the medical service; sending the reservation application information to a third-partyservice platform to enable the third-party service platform to execute reservation application; and acquiring a reservation application result of the third-party service platform, and sending the reservation application result to the terminal. By adopting the method, medical-service reservation efficiency can be improved. In addition, the invention also provides a medical-service reservation device, a storage medium and computer equipment.

The invention provides a container capable of utilizing solar energy for power generation. The container comprises a container body and a first solar battery assembly, wherein the container body is provided with an inlet and outlet which is used for working personnel to enter and exit the container; the first solar battery assembly is connected with the container body and can be arranged at the outer side of the container body. In the container capable of utilizing solar energy for power generation, the inlet and outlet is arranged on the container body, and the interior of the container can be used as an office area; in addition, the first solar battery assembly is arranged at the outer side of the container body so as to receive solar energy for power generation and provide electricity for the container, thus avoiding direct use of electricity and automobile fuels, being used as an office area at construction factory areas where the energy supply is inconvenient, and further solving the energy supply problem at the office area.

The invention discloses a digital currency encryption payment method, and the method comprises the following steps: associating a user client to deploy a trusted node and a verification node, creating a distributed digital currency account book, establishing an SGX trusted execution environment and forming a block chain network, responding to a transaction payment request of a first client, creating a transaction request transaction by the trusted node, generating a public key, and carrying out ring signature on the transaction request transaction; enabling the second client side to be associated with the verification node to verify the ring signature, obtaining the transaction request transaction, executing the payment transaction and transmitting the corresponding payment transaction transaction to the public key address; and enabling the trusted node to analyze the payment transaction and obtain the corresponding digital currency; by using the method, completely anonymous encryption payment of the digital currency is realized, and the problems of privacy protection and double spam in the circulation process of the digital currency are really solved.

The invention relates to a method for preparing an acetate by using a clay-based solid acid. The solid acid is prepared by using natural clay halloysite as a base material. Halloysite and tin tetrachloride are used to form a colloid, the colloid is subjected to aging and then acidification with sulfuric acid, an acetate solid catalyst with a large specific surface area is obtained, the prepared catalyst is added into a reactor, then acetic acid and an alcohol are continuously added, and a reaction is continuously carried out at 90-120 DEG C to obtain the acetate. The solid acid catalyst has excellent esterification reaction catalytic activity, higher efficiency, low preparation and use cost, low corrosion to equipment, and easy recovery and utilization, and the environmental protection andcost problems of industrial production of acetate products can be greatly reduced.

The invention discloses a micro-fluorine glass etching and polishing method comprising the following steps: respectively grinding sodium fluoride and sodium sulfate, and then, mixing sodium fluoride, sodium sulfate, sodium dihydrogen phosphate, water and an active agent at a weight ratio of 10:(7-8):1:(5-6):5 to prepare an etching solution, and etching. Compared with the prior art, the micro-fluorine glass etching and polishing method has the advantages that firstly, a great deal of hydrofluoric acid is prevented from being directly used, and the used medicines are simple in recovery and can be completely recycled; secondly, the micro-fluorine glass etching and polishing method is high in etching speed, large in etching depth, good in etching uniformity, high in safety and capable of meeting the production and application requirements; thirdly, the environment protection and sustainable development concepts are achieved, the requirement for clean production is met, and the wastewater treatment method designed for the technology is used for ensuring that the treated wastewater can be up to the natural discharge standard.

The invention provides a single-image three-dimensional reconstruction method based on deep learning video supervision. The single-image three-dimensional reconstruction method comprises the followingsteps: 1) constructing an object pose prediction module, wherein the position of camera shooting relative to an object can be obtained according to the object in an input image; 2) constructing an object three-dimensional shape estimation module: obtaining a three-dimensional point cloud of an input single object image through iterative optimization loss prediction; 3) constructing a multi-frameshape fusion module: inputting a video graph line sequence into the above two modules in parallel to obtain single-frame camera pose and three-dimensional shape prediction, and obtaining more accurateprediction through multi-frame weight fusion, consistency constraint and smoothness constraint; and 4) arranging an overall training framework which comprises three stages of data preprocessing, model framework training and testing. End-to-end three-dimensional reconstruction is realized, training can be performed by using a video sequence, and the three-dimensional point cloud can be predicted only by using a single image in a test stage.

The invention belongs to the technical field of furfuryl alcohol preparation, and discloses a method for preparing furfuryl alcohol by catalyzing transfer hydrogenation of furfural through non-noble metal-loaded nitrogen-doped carbon. According to the method, a cobalt oxide-loaded nitrogen-doped carbon catalyst is used for catalyzing furfural to prepare furfuryl alcohol, wherein nitrogen-doped carbon in the catalyst is a carrier, and cobalt oxide in the catalyst is an active component. According to the method, a nitrogen-doped carbon material loaded by cobalt oxide is used as the catalyst, organic alcohol is used as a solvent and a hydrogen donor, and transfer hydrodeoxygenation of furfural is catalyzed to synthesize furfuryl alcohol; the method is simple in the whole process, easy to operate and low in cost; a reaction system is green; the catalyst is high in activity; the furfuryl alcohol is high in selectivity and yield; and the method has wide industrial application prospects. H2 is prevented from being directly used, and the organic alcohol serves as the hydrogen donor, so storage and use are convenient, the requirement of a reaction solvent on hydrogen solubility is lowered,and hydrogenation effect is good.

The invention discloses an epoxy resin manhole cover prepared by utilizing waste glass fibers and a preparation method of the manhole cover. The manhole cover comprises the following components, in percentages by mass: 86-92.5% of an epoxy resin glass cloth, 6-12% of active calcium, and 1.5-2.8% of a curing agent, wherein the epoxy resin glass cloth comprises the following materials, in percentages by mass: 60-80% of a glass fiber cloth and 20-40% of epoxy resin coating the glass fiber cloth. According to the manhole cover and the preparation method of the manhole cover provided by the invention, the manhole cover comprises the following components, in percentages by mass: 86-92.5% of the epoxy resin glass cloth, 6-12% of the active calcium, and 1.5-2.8% of the curing agent, direct use offormaldehyde is avoided, and compared with the prior art, the method provided by the invention has the beneficial effects of recycling the glass fiber waste, turning the waste into treasure, improvingthe use amount of the waste glass fibers and reducing the use amount of the epoxy resin, thereby reducing the industrial costs; and the produced manhole cover has high strength, abrasion resistance,acid resistance, alkali resistance, flame resistance, insulation, good comprehensive mechanical properties, and long service life, and more importantly, the formaldehyde is not used, so that the manhole cover is green and environmentally friendly.

The invention relates to a method for preparing sevoflurane [fluoromethyl 2,2,2-trifluoro-1-(trifluoromethyl) ethyl ether], which comprises the following steps: reacting hexafluoroisopropanol with dimethoxymethane in the presence of a catalyst to obtain methoxymethylene hexafluoroisopropyl ether, and reacting methoxymethylene hexafluoroisopropyl ether with a fluoride in the presence of a strong acid to obtain the sevoflurane.

The invention discloses a blind hole circuit board and a manufacturing method thereof. The method comprises the following steps: processing copper-clad core boards, respectively processing two copper-clad core boards covered with copper foils in different thickness, drilling a through hole on a first copper-clad core board to make a blind hole, and thickening copper layer thickness of a second copper foil of the first copper-clad core board through panel plating, processing a second copper foil to a second circuit layer, thickening copper layers on two surfaces of a second copper-clad core board and manufacturing a third circuit layer, and laminating the first and second copper-clad core boards and a prepreg to an integrated circuit board; mechanically drilling a through hole on the laminated integrated circuit board and plating a layer of copper, thickening an outer layer copper foil of the integrated circuit board through panel plating, and manufacturing a circuit of an outer surfacelayer and covering a solder mask, and then perform surface treatment. The copper-clad core boards with copper foils in different thicknesses are used. In processes of plating through holes, panel plating, and pattern plating, in order to achieve thickness requirement of copper of a hole, the copper layer would not be plated too thick, and overall board thickness can be conveniently controlled.

The invention provides a slice routing rule tamper-proofing method, a terminal, a network element and a medium. The method comprises the following steps: defining a description identifier used for describing an application identifier in a slice routing rule; establishing a relation mapping table between the description identifier of each application program and the respective application identifier of each application program; receiving a routing rule and a slice identification rule returned by the core network; judging whether the first application identifier and a description identifier mapped by the first application identifier exist in the relation mapping table or not; if the first application identifier and the description identifier mapped by the first application identifier exist, matching the corresponding first application program with the routing rule and the slice identifier rule based on the first application identifier and the description identifier mapped by the first application identifier. According to the embodiment of the invention, at least the security of the URSP rule can be effectively improved, and an unauthorized application program is prevented from illegally using the slicing service.

The invention discloses a modified bio-based high-performance water reducing agent and a preparation method thereof. The modified bio-based high-performance water reducing agent comprises the following components in parts by weight: 85-95% of a double-bond-activated lignin derivative, 2-8% of reducing sugar, 1-6% of unsaturated carboxylic acid, 0.8-1.5% of an initiator oxidation component, 0.2-0.5% of an initiator reduction component, 0.5-1.0% of a backing material chain transfer agent, 0.2-0.8% of a material A chain transfer agent and a catalyst with the final concentration of 2.5-10 ppm. The prepared water reducing agent has a certain comb-shaped structure and a large number of carboxyl adsorption groups and has a good adsorption and dispersion effect on cement particles under the condition of a low mixing amount, and concrete mixed with the high-performance water reducing agent has excellent fluidity and fluidity maintaining performance. Meanwhile, the preparation method provided by the invention can reduce the dependence of high-performance water reducing agent production on petrochemical products, and realizes high-value utilization of biomass industrial byproducts.