6results about How to "Promote research progress" patented technology

This invention provides a ubiquitous network frequency offset estimation method, system, medium, and terminal. The method includes the following steps: receiving wireless signals from multiple carriers of multiple satellites; constructing the satellite-to-ground geometric relationship between each satellite and the terminal; constructing a frequency offset estimation equation based on the wireless signals and the satellite-to-ground geometric relationship; and obtaining a frequency offset estimate based on the frequency offset estimation equation. The ubiquitous network frequency offset estimation method, system, medium, and terminal of this invention can achieve accurate frequency offset estimation even in the absence of GNSS signals in the ubiquitous network, thereby ensuring the continuity and reliability of the ubiquitous network.

The application belongs to the field of microbial animal cell lines, and relates to a human immortalized simple renal cyst cell line SRC-X1 and an application thereof. The human immortalized simple renal cyst cell line is named SRC-X1, the cell line has been preserved in the China Center for Type Culture Collection on September 19, 2025, and the preservation number is CCTCC NO: C2025303. The application of the human immortalized simple renal cyst cell line SRC-X1 in preparation, screening or evaluation of renal cyst treatment drugs. The application of the human immortalized simple renal cyst cell line SRC-X1 as a renal cyst cell model. The application of the human immortalized simple renal cyst cell line SRC-X1 as experimental material in renal cyst basic or clinical research.

The application provides a testing tool and testing method for axial extrusion connection force of a conduit, and relates to the technical field of metal conduit connection, and comprises a base with a base limiting groove on an upper end face, an adjusting bolt, a pressure plate accommodated in the base limiting groove, a positioning ring axially inserted on an upper end face of the pressure plate, and a chuck and a pressure column accommodated in the positioning ring, and a part of the pressure column extends out of an upper end face of the positioning ring, the base has a base limiting boss, and an inner surface of the base limiting boss is provided with a thread, the pressure plate is provided with a positioning groove, and the positioning ring is provided with an observation viewport on a cylindrical side face. The tool is applied to an electronic universal testing machine, is suitable for axial extrusion pipe joints of different size specifications, provides the required extrusion force value for a connection tool of the pipe joint, realizes a leap from theory to reality research of domestic axial extrusion connection technology, and greatly promotes the research progress of the domestic pipe joint.

The invention belongs to the field of cell measurement, and discloses a high-precision rod-shaped bacterial cell length measurement method, which comprises the following steps: S101, segmenting an image containing bacterial cells to be measured to obtain a mask image and a flow field image; s102, separating a mask and a flow field of each bacterial cell in the mask image and the flow field image to obtain a mask of a single bacterial cell and a flow field of a single bacterial cell; s103, respectively acquiring a smooth curve skeleton of each bacterial cell based on the mask and the flow field; s104, extending the smooth curve skeleton to the edge of the cell to obtain a cytoskeleton; and S105, calculating the length of the cytoskeleton. The high-precision rod-shaped bacterial cell length measurement method provides a high-precision, rapid and automatic solution for rod-shaped bacterial cell length measurement.

This utility model discloses an anaerobic bacteria cultivation device, specifically relating to the field of anaerobic bacteria cultivation technology. It includes a cultivation chamber and a reaction tank. The cultivation chamber houses the anaerobic bacteria cultivation device, and the reaction tank generates CO2 gas. The cultivation chamber includes a cylindrical body and a top cover. The cylindrical body is open at both ends, and the top cover is detachably and sealed to one end of the cylindrical body. The other end of the cylindrical body is connected to the gas outlet of the reaction tank. The top cover has a gas outlet pipe with a first valve installed on it. This utility model has a simple structure, low cost, and is suitable for small-scale constant-temperature cultivation equipment, promoting the research progress of anaerobic microorganisms.

The application provides a kind of axial extrusion pipe joint groove depth design method based on preventing pull-out, and relates to the technical field of metal conduit connection.The steps of the application are as follows: (1) calculating the tangential stress σ of the conduit when pull-out θ ; (2) calculating the unit pressure q on the surface of the conduit; (3) calculating the pull-out force F on the conduit; (4) calculating the groove depth H of the pipe joint.The groove depth design method is suitable for the design of the minimum groove diameter of the axial extrusion pipe joint, so that the pipe joint can meet the connection strength standard in structure, provides a theoretical basis for the research of such joints in China, and is conducive to promoting the domestic research progress.