41results about How to "Avoid difficult problems" patented technology

The invention discloses a method for determining the 100% pure water spectrum through the nuclear magnetic resonance logging spectrum T2. The method includes the following steps that firstly, the relation between the irreducible water saturation Swi of a reservoir stratum in an exploratory area and the geometric mean value T2g of the spectrum T2 is built according to known rock physical experiment characteristics, then the irreducible water saturation Swi of the logging spectrum T2 and the geometric mean value T2g of the spectrum T2 are calculated point by point by means of a bulb tube thin film model, the nuclear magnetic resonance centrifugal spectrum is built, and the 100% pure water nuclear magnetic resonance spectrum is built on the basis of the nuclear magnetic resonance centrifugal spectrum. A significant difference exists between a nuclear magnetic single and a 100% pure water nuclear magnetic signal when the reservoir stratum contains oil and gas, and accurate identification is carried out on fluid of the reservoir stratum by means of the difference. The 100% pure water spectrum is built through nuclear magnetic resonance logging information so that the real pore structure of the reservoir stratum can be reflected; in addition, by contrasting the difference between the actually measured nuclear magnetic resonance spectrum and the built pure water spectrum, the property of the fluid of the reservoir stratum is effectively identified, so that the problem that fluid identification during nuclear magnetic resonance logging is difficult due to crude oil properties and observing modes is solved, the application of the nuclear magnetic resonance logging information is improved, and the geological problem solving capacity is enhanced.

The embodiment of the invention provides a complex iron catalyst solution and a preparation method of the complex iron catalyst solution. The complex iron catalyst solution is prepared from the following raw materials: an iron source containing sulfate radicals, an organic complexing agent, a pH regulator and a stabilizer, wherein the molar ratio of the organic complexing agent to the iron element in the iron source is 1.0-2.0, the molar ratio of the stabilizer to the iron element in the iron source is 1.0-2.0, and the pH value of the complexing iron catalyst solution is adjusted to 8.0-12.0 by the pH regulator. The complex iron catalyst solution disclosed by the embodiment of the invention can be used for removing hydrogen sulfide, that is, oxidizing hydrogen sulfide gas into elemental sulfur, and can improve the desulfurization efficiency.

The invention provides a taxi passenger lost article fetching system. The taxi passenger lost article fetching system comprises a plurality of camera identification devices. wherein the camera identification devices are arranged at the tops of the taxies with different vehicle information and used for recognizing the faces and carried objects of passengers so as to judge and obtain the face information and lost article information of the passengers; and the lost article storing and taking device used for storing lost articles and recognizing the faces of the passengers so as to take back the lost articles; a processing server which is in communication connection with the camera shooting recognition device and the lost article storage and retrieval device and used for processing the passenger information and the lost article information; And passenger terminals which are respectively held by passengers with different passenger information and are used for enabling the passengers to reserve the taxi.

The invention relates to an optical module, which relates to the technical field of optical fiber communication. The optical module is used for receiving burst light, and comprises a light source device, an optical coupling device, a first photodetector, a first transimpedance amplifier, and a limiting amplifier. The light source device is configured to emit continuous light having a wavelength identical to that of the burst light. The optical coupling device is used for receiving continuous light and burst light, and outputting a first optical signal obtained by combining the continuous lightand burst light, wherein the optical power difference of the first optical signal is smaller than the optical power difference of the burst light. The first photodetector is configured to receive thefirst optical signal and convert the first optical signal into a corresponding current signal. A first transimpedance amplifier is electrically connected to the first photodetector for converting a current signal into a first voltage signal in a continuous mode. The limiting amplifier is electrically connected to the first transimpedance amplifier for converting a digital signal corresponding tothe burst light based on the first voltage signal.

The invention provides a material conveying device, a kitchen storage tool and a cooking appliance. The material conveying device comprises a transition cavity and a blower device, and the transition cavity is provided with a feeding opening for materials to enter, an air inlet for airflow to enter and a discharging opening for the materials to flow out of; the blower device is connected with the air inlet and used for blowing air into the transition cavity. According to the material conveying device, wind power is utilized to drive the materials in the transition cavity to be discharged to the discharging opening and further drive the materials to be conveyed to receiving devices such as cooking utensils of the cooking appliance. Compared with the usage of hydraulic conveying in the prior art, dry materials are conveyed, so that the problem of material residues caused when materials are attached to the inner wall of a pipeline through the adoption of water for conveying is solved; compared with the usage of gravity falling conveying in the prior art, during conveying by wind power, the gravity of the materials can be overcome, and the materials can be conveyed and lifted, so that the material conveying device can be applied to conveying occasions with different demands.

The invention discloses a post recruitment condition prediction method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring post requirement information of a post to be recruited; inputting the post requirement information into a preset resume delivery quantity prediction model to obtain a resume quantity estimated value meeting the post requirement to be recruited within a preset time period; and comparing the resume quantity estimated value with a preset resume quantity threshold, and guiding a recruiter to adjust the post requirement information according to a comparison result. According to the method, prediction is carried out by comprehensively considering various microscopic factors, so that a prediction result is objective and reliable, and a moderate resume screening passing rate is ensured in a resume screening process. Moreover, according to the method, corresponding post requirements and post description suggestions can beautomatically given according to the recruitment demand and urgency degree of the recruiter, and the problem that the post requirements are difficult to formulate due to the fact that the actual recruitment situation cannot be visually known is avoided.

The invention relates to a novel thermal inlet load dynamic prediction and control method, mechanism and data hybrid driving is adopted, target energy consumption accurate control is taken as a core, a steady-state heat transfer equation and a machine language are fused for modeling, and the method is simple and feasible, has self-learning, self-adaption and self-optimization-approaching capacities, is suitable for time-division, time-division and temperature-division accurate heat supply, and has a wide application prospect. The condition of user side oversupply can be effectively avoided; and in combination with adjustment of the heat source side of the energy center, efficient operation of the whole system is facilitated, on-demand heat supply is achieved when the time scale and the space scale are small enough as much as possible, and energy conservation and emission reduction are remarkably achieved while the heat requirement of a user is met.

The invention relates to the technical field of circuit breakers, and discloses a circuit breaker protection device with a frame made of high-end equipment, and the device comprises a housing, and theouter side of the housing is movably connected with a rotating button. The position of the placement plate can be changed according to actual needs, placement of the circuit breaker is facilitated, the problem of high operation difficulty caused by limited internal space of the protective shell is effectively avoided, the placement convenience of the circuit breaker is effectively improved, the actual use condition is better met, the position of the shielding tool is automatically changed through the combined action of the baffle, the first movable rod and the first rotary disc, the circuit breaker can be conveniently placed, and when the circuit breaker is moved to the protection shell, the placement opening is automatically shielded, dust is prevented from falling into the placement opening, the circuit breaker is effectively protected, and an electric wire of the circuit breaker is automatically fixed, so that the placement stability of the circuit breaker can be improved, and theconnection part of the electric wire and the circuit breaker can be prevented from being twisted; and the probability of wire breakage is increased, and normal use of the circuit breaker is not facilitated.

The invention relates to a synthesis method of 1-phenyl-5-mercaptotetrazole, which comprises the steps of (1) by using sodium anilino dithiocarboxylate and sodium azide as raw materials, water as a reaction solvent and an alkaline solution as a catalyst, carrying out heating reflux reaction, and neutralizing the reaction solution with an acid after the reaction is ended to obtain a 1-phenyl-5-mercaptotetrazole crude product; and (2) recrystallizing the 1-phenyl-5-mercaptotetrazole crude product obtained in the step (1) by using a recrystallization solution to obtain a 1-phenyl-5-mercaptotetrazole finished product, wherein the recrystallization solution is a mixed solution of toluene and water. The 1-phenyl-5-mercaptotetrazole prepared by the method is high in purity, safer in reaction process and suitable for industrial production.

The invention discloses a multi-round steam injection well high-strength filling sand control technology method. The method comprises the following steps: 1, pulling out a borehole production pipe string, and then lowering in a sand flushing pipe string to perform sand flushing operation; 2, pulling out the borehole sand flushing pipe string, and then lowering in a drifting pipe string to carry out the drifting operation; 3, pulling out the borehole drifting pipe string, and then lowering in a sand control pipe string; 4, carrying out the filling operation; 5, carrying out the steam injectionoperation; and 6, lowering in a drill plug pipe string and removing a drillable sand filter pipe of the sand control pipe string. The method integrates a near borehole zone, a screen sleeve annulus and a sand filter pipe, solves the problem of reciprocating movement of gravel during multiple rounds of steam injection, and effectively improves the stability of a sand retaining barrier. After filling sand control, the sand control pipe string is easy to clear, and sufficient wellbore space for is provided for the later production of oil wells, especially a variable casing damaged well.

The invention provides an edible fungus liquid spawn fermentation tank and application thereof. The edible fungus liquid spawn fermentation tank comprises a ventilation filter system, a main tank, an auxiliary tank and a sampling pipe. The edible fungus liquid spawn fermentation tank can be used for detecting whether edible fungus liquid spawns are contaminated in the cultivation process any time; the result indication can be judged directly, and the problem that contaminated spawns enter production because of manual misjudgment of observers is solved.

The invention discloses a respirator. The respirator comprises a machine shell, wherein an oxygen generating device, an oxygen filtering device and an oxygen humidifying device are arranged in the machine shell; the oxygen generating device comprises an air compressor and an oxygen generating tank; an air outlet and an air inlet are formed in the upper end and the lower end of the oxygen generating tank respectively; an exchange membrane is arranged in the oxygen generating tank; the exchange membrane divides the oxygen generation tank into an upper cavity and a lower cavity; a safety valve isarranged on the side wall of the oxygen generating tank and communicates with the lower cavity; and the air compressor is fixedly arranged at the bottom of the machine shell, and the outlet end of the air compressor is connected with the air inlet through a pipeline. The beneficial effects have the advantages that the structure is compact, suffocation feeling is avoided, oxygen can be moistened,oxygen can be generated automatically, and an oxygen bottle does not need to be replaced.

The embodiment of the invention provides a supported desulfurization catalyst and a preparation method of the supported desulfurization catalyst. The supported desulfurization catalyst comprises, for example, a porous alumina carrier and aminocarboxylic acid complex iron ions supported on the surface of the porous alumina carrier. The specific surface area of the porous alumina carrier is 50-500 square meters per gram, the average pore volume of the porous alumina carrier is 0.05-0.8 cubic centimeters per gram, and the average pore size of the porous alumina carrier is 0.5-50 nanometers. The supported desulfurization catalyst provided by the embodiment of the invention is suitable for desulfurization of to-be-desulfurized gas containing hydrogen sulfide and oxygen, can oxidize hydrogen sulfide into elemental sulfur, has higher desulfurization performance, and is suitable for a desulfurization environment with higher reaction temperature and higher oxygen concentration.

The invention provides an interventional contrast imaging device and method, which are used for solving the problems that a patient is inconvenient to transport and the patient needs to change a bed body back and forth for examinations of different positions during a current contrast examination. The interventional contrast imaging device comprises a workbench; one end of the workbench is provided with a contrast imaging device; the workbench comprises a supporting plate; a working plate is arranged on the supporting plate in a sliding manner; first supporting rods are arranged on the periphery of the bottom face of the supporting plate; the lower end of each first supporting rod is fixed to a hydraulic cylinder; the contrast imaging device comprises a bent rod; one end of the bent rod is connected with a base with a first self-locking wheel, and the other end of the bent rod is rotationally provided with a contrast imaging main body; the contrast imaging main body extends to a position above the working plate; and a working face of the contrast imaging main body is provided with detachable covering cloth. The interventional contrast imaging device is reasonable in design and convenient to install; the sliding working plate is arranged, and a patient can be placed on the working plate and slide to the workbench, so that the problem that the patient is inconvenient to carry is solved, and precious time is won for treatment.