Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

11680results about How to "Avoid churn" patented technology

Smokeless air fryer

The invention relates to a smokeless air fryer which finishes the cooking of foods and does not exhaust smoke by utilizing the high-speed hot air circulation technology. The smokeless air fryer comprises an air fryer fixed body and an air fryer movable body, wherein a top-driven power supply switch is arranged on one side of the lower end surface of a boss part at the front part of the air fryer fixed body, and a timer is arranged at the boss part; a top-driven boss is arranged on one side of the upper end surface of a handle of the air fryer movable body, and the handle is in locking and opening matching with an object containing mesh basket; the top-driven boss is in top-driven opening and closing matching with the top-driven power supply switch on one side of the lower end surface of the boss part of the air fryer fixed body; a planer screw type electric heating tube is arranged below hot air blades of the air fryer fixed body, a power supply joint of the planer screw type electric heating tube is connected with the inner wall of the air fryer fixed body through a connection assembly, and a tube body of the planer screw type electric heating tube is elastically connected with the inner wall of the air fryer fixed body through a tension spring; and the center of the bottom of an oil collecting backflow pot of the air fryer movable body is in an arc bulge shape, and the wall circumference and the bottom of the oil collecting backflow pot are in an arc shape.
Owner:NINGBO CARELINE ELECTRIC APPLIANCE CO LTD

Automatic irrigation-drainage system for farmland

The invention relates to an automatic irrigation-drainage system for farmland. Irrigation water enters a water level control pond through a water level control valve; a floating ball drives the water level control valve to regulate the water supply amount until the supplied water is equal to the consumed water; the water level is stabilized at a certain water level when the water supply of the water level control valve is stopped at a water supply water level h1; the irrigation water enters a soil filling region at the upper part in a U-shaped concrete groove through a nonfine concrete cover plate and a sand inverted filter from the bottom of the inner part of the U-shaped concrete groove so as to form a soil saturated water layer lower than h1; the water in the saturated water layer is raised to the root layer of the crop in the form of capillary water; the water supply amount is increased or reduced along with water consumption amount so that the farmland is automatically irrigated; because the h1 is lower than the height h2 of the upper edge of the U-shaped concrete groove, no gravity water is leaked; once the soil saturated water layer is higher than the h1 because of raining, the water level control valve is turned off, the irrigation is stopped; if the water layer is higher than the upper edge h2 of the water level control pond, the water overflows to a water accumulation pond, and the water begins to be discharged; and the irrigation is recovered until the soil saturated water layer is lower than h1. The system has full automatic irrigation, high reliability and excellent durability.
Owner:FARMLAND IRRIGATION RES INST CHINESE ACAD OF AGRI SCI

Method for freezing and reviving umbilical cord tissues and for separating and increasing stem cells

The invention relates to a method for freezing and reviving umbilical cord tissues and for separating and increasing stem cells after reviving the umbilical cord, and the step comprises the following steps of preparing umbilical cord tissue freezing liquid; sterilizing and washing the umbilical cord tissues; cutting the tissues into blocks; placing the tissue blocks and the freezing liquid into afreezing tube, cold storing the tissue blocks for 0.5 hour under the temperature condition of 4 DEG C and then storing the tissue blocks for one day under the temperature condition of minus 80 DEG C,and then freezing the tissue blocks in liquefied nitrogen; and taking the umbilical cord tissues out of the liquefied nitrogen to use, thawing the umbilical cord tissues in constant-temperature waterbath, utilizing mesenchymal stem cell culture base to washing the umbilical cord tissues through a drop method, and separating and increasing the mesenchymal stem cells of the revived umbilical cord tissues through a tissue attachment method. The method can effectively protect the frozen umbilical cord tissue, so that the umbilical cord tissues can be revived to use, and the method is particularly suitable for separating and increasing the mesenchymal stem cells after the umbilical cord tissue is revived.
Owner:BOYALIFE

An online classroom atmosphere assessment system and method

The invention provides an online classroom atmosphere evaluation system and method. The evaluation system comprises a video stream collection module, a data stream processing module, an image analysismodule, a classroom attendance analysis module, a classroom atmosphere evaluation module, a classroom atmosphere scoring module and a display module; . The invention collects classroom video stream data through a camera, and the captured video is captured frame by frame to obtain images; all the faces images are segmented and numbered sequentially, at the same time, the eigenvalues are assigned to the faces with the corresponding numbers, and then face recognition and facial expression recognition are carried out according to the number, so as to identify the number, emotion and movement posture of students in the video stream data; the score 0 is given to the students lowering heads in the image and the score 1 is given to students having interaction; according to the emotional analysisstrategy of students listening to the teacher, the current student listening student score is obtained and finally comprehensive evaluation of the classroom atmosphere score is obtained. The inventioncan evaluate the classroom quality on-line and in real time, and can effectively improve the evaluation effect.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Magnetic bead-based sample treatment and nucleic acid automatic extraction system

The invention discloses a magnetic bead-based sample treatment and nucleic acid automatic extraction system, comprising a micro-fluidic chip and a micro motor drive device, wherein the micro-fluidic chip comprises a layer of cover plate, two layers of bottom plates and two layers of structure plates, wherein the chip can automatically finish the operation processes such as cell lysis, nucleic acid purification, nucleic acid eluting and the like, and finally a nucleic acid sample is obtained. Based on siphon principle or micro-fluidic surface tension properties, a driven drive pump without external drive force is designed by the chip, so as to achieve flowing and transferring of a detection sample, a reaction reagent and reaction liquid waste. Under mixed hardening of a micro vibration motor, through a periodic alternating magnetic field and a constant magnetic field provided by an external magnet, effective mixing between the magnetic bead and the reaction sample and the reaction reagent in a reaction cavity, and fixing of the magnetic bead in the liquid waste discharge process are achieved; and the chip is matched with a full-automatic micro motor drive device to automatically finish a plurality of reaction steps, so that a high-purity nucleic acid sample template is provided for gene amplification reaction.
Owner:BEIJING UNIV OF CHEM TECH +1

Method for breeding beef cattle and mutton sheep standardly on large scale through photovoltaic facilities

A method for breeding beef cattle and mutton sheep standardly on a large scale through photovoltaic facilities includes the four parts that first, a photovoltaic facility greenhouse is built, maize seedlings or high-quality green forage grass Zea mexicana is produced throughout the year to be used as green fodder of beef cattle and mutton sheep; second, the beef cattle and the mutton sheep are bred and bio-organic fertilizer is produced standardly on a large scale through the photovoltaic facility greenhouse; third, photovoltaic power generation is performed for self use, and excessive electricity is connected into the state grid; fourth, a beef cattle and mutton sheep traceable system is built, and foods are made safe and sanitary. Through the method, not only can solar resources be effectively utilized to output clean and green energy, but also efficient planting and breeding can be achieved, by-products are processed into organic fertilizer, and a new path is provided for green agricultural production. Because a full-frame high-standard support system is adopted for the photovoltaic agricultural greenhouse and photovoltaic modules are arranged on the greenhouse, the space of the greenhouse can be effectively utilized, power utilized in the greenhouse can be supplied through a photovoltaic power station, and equivalently, stereoscopic production is formed on the land with the same area.
Owner:丁志强 +3

Lithium-sulfur battery

The present invention relates to a lithium-sulfur battery, which comprises a positive electrode, a negative electrode and an electrolyte, wherein the positive electrode comprises a positive electrode current collector and a positive electrode active material involved in an electrochemical reaction, the positive electrode active material comprises a thio material, the negative electrode comprises a negative electrode current collector and a negative electrode active material selected from metal lithium, a lithium alloy, lithium-carbon and a silicon base material, a pre-lithium embedding treatment is performed on the positive electrode and / or the negative electrode when the selected thio material and the silicon base material do not contain lithium, and the electrolyte is a solid state electrolyte containing a lithium super-ion conductor material. According to the solid state lithium-sulfur battery, loss of an intermediate product lithium polysulphide during a positive electrode charge and discharge process is avoided, the solid state electrolyte has high ionic conductance so as to improve energy density and cycle life of the lithium-sulfur battery, the packaging process of the lithium-sulfur battery adopting the solid state electrolyte is simpler than the packaging process of the lithium-sulfur battery adopting the liquid state electrolyte, and the lithium-sulfur battery is easy to industrialize.
Owner:POSITEC POWER TOOLS (SUZHOU) CO LTD +1

Integrated nitrogen and phosphorus recovery device in struvite method

The invention discloses an integrated nitrogen and phosphorus recovery device in a struvite method, which relates to the field of environmental engineering water treatment and is a reactor for treating nitrogen and phosphorus-containing wastewater in a physicochemical method. Substances nitrogen and phosphorus in the wastewater are removed in a magnesium ammonium phosphate (struvite) form, and the substances are recovered and reused. The reaction device is in an integrated form, which comprises a precipitation zone, a mixing reaction zone, a crystal growth zone and a crystal trapping and water discharging zone from bottom to top sequentially, the mixing reaction zone is provided with a first-grade aerator, which is mainly a wastewater and reagent fully mixing and reacting zone; the crystal growth zone is provided with a second-grade aerator, which is mainly a struvite growth zone; in the precipitation zone, large-grain struvite crystals are mainly precipitated; and the crystal trapping and water discharging zone recovers the struvite crystals by a filter screen. In addition, the device uses external reflux to reinforce and to control the supersaturated rate of the struvite reaction, thus promoting the crystal growth. The device has simple technological process and has the advantages of short hydraulic retention time, high nitrogen and phosphorus recovery efficiency, high recovery pureness, little occupied area, low operation and maintenance cost and the like.
Owner:TONGJI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products