14results about How to "Guaranteed singularity" patented technology

The invention discloses a flexible photovoltaic support aeroelastic response wind tunnel test platform and method, and the platform comprises a platform body which comprises a wind field simulation region and an experiment test region. A wind tunnel wedge is arranged at the front section of the incoming flow wind direction in the wind field simulation area; a flexible photovoltaic support model is arranged in the experimental test area; the flexible photovoltaic support model comprises a photovoltaic panel, a flexible photovoltaic panel support and a flexible photovoltaic panel base; the flexible photovoltaic panel base is fixed on the wind tunnel turntable; the photovoltaic panel is fixed on the flexible photovoltaic panel base through the flexible photovoltaic panel bracket; steel cables penetrate through the interior of the photovoltaic panel, and the steel cables on the two sides are connected with an electronic tension meter and a tightening device. Through the platform and the method, a real complex wind field environment can be simulated, dynamic response data of the support under different working conditions can be obtained, and a scientific basis is provided for design optimization and wind resistance improvement of the flexible photovoltaic support.

The present invention belongs to the field of bioengineering technology, and discloses a circular RNA transcription vector and its preparation method and application. The circular RNA transcription vector of the present invention comprises the following structural elements: an external 5' homology arm, a ribozyme, an internal 5' homology arm, a 5' spacer sequence, an IRES, a multiple cloning site or a coding region, a 3' spacer sequence, an internal 3' homology arm, a ribozyme, and an external 3' homology arm. The present invention avoids the generation of a variety of cyclization byproducts caused by temperature fluctuations during in vitro transcription by optimizing the internal 3' homology arm and the internal 5' homology arm sequence of the circular RNA transcription vector, thereby ensuring the singleness, stability and efficient expression of the produced circular RNA product and reducing production costs. It is of great significance to the development of the in vitro preparation process of circular RNA and the further application of circular RNA.

The invention relates to the field of animal husbandry molecular breeding and precise breeding, in particular to an animal husbandry improved variety breeding twin-fetal cattle system based on gene screening. The system comprises an ovulation potential typing module, a uterine bearing capacity quantification module, a sex compatibility verification module and a decision module. Constructing a combined evaluation model of the double-ovulation basis and the uterus metabolism capability by systematically integrating site specific amplification and gene expression quantification technologies; the core of the method is that a precise reproduction instruction is generated according to full-link data of genotypes and phenotypes; according to the method, a single ovulation rate screening mode is changed, the problem of abortion and weak abortion caused by insufficient intrauterine environment is effectively solved, and the success rate of double-fetal pregnancy is remarkably increased.

The present invention relates to a method and device for generating a data set of a target for passive underwater acoustic tracking in real time. The method receives an underwater acoustic signal through a passive sonar array, and after confirming the target to be tracked, continuously generates a data set of the target to be tracked in real time. The specific steps include: beam forming; dividing the frequency domain sub-band interval; joint detection to confirm the target; obtaining a single beam sub-band LOFAR; converting and accumulating frequency domain data; generating a target LOFAR spectrogram; storing the feature matrix and label information in a multi-dimensional array; and repeating the above steps. The present invention overcomes the defects of insufficient uniformity of generated target samples in the process of passive underwater acoustic target tracking, which are easily contaminated by other target signals in the frequency domain; and solves the problem of complex sample information storage in underwater acoustic data sets. The present invention can be used in a passive sonar tracking system based on deep learning to generate a data set of a tracked target in real time for subsequent detection and tracking.

The application provides a suspended optical mechanical system, comprising a first substrate block, a suspended waveguide, a suspended support beam, a plurality of support tether groups, a suspended detection mass and an optical cavity, wherein the suspended waveguide comprises a linear main body part extending along an X direction and a plurality of connection parts arranged in sequence and at intervals along the X direction, and the support tether groups are connected to the section of the suspended waveguide with the connection parts, the stability of the connection of the support tether and the suspended waveguide is increased, the width of the suspended waveguide at the connection parts is enlarged, the optical mode can be well limited in the waveguide, and the influence of the support tether on the optical mode is minimized. The tapered part of the connection part ensures the singularity of the mode in the process of light field transmission and slows down the change trend of the width of the suspended waveguide, which is beneficial to reduce the scattering loss and further increase the quality factor. The connection part arranged on one side can ensure that the gap width between the suspended waveguide and the optical cavity is constant, thereby ensuring the optimal coupling efficiency.

The present invention belongs to the technical field of operation and installation of electric power equipment, and specifically relates to a device and method for preventing gas from mixing into a hydrogen dryer gas-water separator; comprising: a hydrogen dryer gas-water separator, a plurality of diaphragm valves, a pipeline connection component, an automatic drainer, a metal drainage hose, a water collection tank, a drain valve, an end cap, an exhaust pipe A and an exhaust pipe B; one end of the hydrogen dryer gas-water separator is connected to the exhaust pipe A; one end of the automatic drainer is connected to the exhaust pipe B; the exhaust pipe A and the exhaust pipe B are connected through a pipeline connection component; a plurality of diaphragm valves are arranged on the exhaust pipe A; the bottom of the automatic drainer is connected to the drain valve. A drain port is arranged at the other end of the automatic drainer; the drain port is connected to one end of the metal drainage hose, and the other end of the metal drainage hose is connected to the water collection tank; an end cap is arranged at the port where the metal drainage hose is connected to the water collection tank.

The utility model relates to a sealing detection device for an automobile headlamp, which belongs to the field of automobile headlamp detection and comprises a detection box body, a pressure sensor fixedly communicated with the inside of the detection box body and extending to the outside of the detection box body, a stand column fixedly connected to the top of the detection box body and a mounting plate fixedly connected to the top end of the stand column. A limiting mechanism for limiting and fixing the headlamp is arranged on the upper surface of the detection box body, and a negative pressure generation structure is arranged outside the detection box body. According to the sealing performance detection device of the automobile headlamp, the output end of the electric push rod drives the partition plate to move downwards in the detection box body to limit and fix the headlamp, the partition plate is connected with the linkage structure through the fixing rod and the rack, so that the piston plate is driven to reciprocate through the rotating disc and the connecting rod, and a negative pressure environment is formed in the detection box body; the risk of damage to the internal structure and the sealing material of the headlamp due to overlarge internal pressure is fundamentally eliminated, and the advantage of nondestructive testing is achieved.

The invention relates to the technical field of sewage treatment, in particular to a fracturing flow-back fluid treatment process, according to the front-end process, a multi-time direct filtration system is adopted for pretreatment, and suspended solids and biochemically harmful substances in raw water are removed to the maximum extent through a physical method; a dual-alkali method and an ion exchange double-section hardness removal process are adopted, so that the common problem of calcium and magnesium scaling in a subsequent filtering system is solved; the crystallized salt obtained by evaporation of the MVR evaporation system is used for an ion exchange process section, so that the problem of regenerated salt is solved, and the total amount of the final crystallized salt is also reduced; the produced water of each membrane filtration system flows back to the A / O biochemical system at the front end to form internal circulation, so that the inlet water concentration of the A / O biochemical system is diluted, the problem of high salinity of the biochemical system is solved, and the problems of high COD (Chemical Oxygen Demand) in evaporated condensate water of an MVR (Mechanical Vapor Recompression) evaporation system and difficulty in degradation are also solved; the treatment method combining the A / O biochemical system and ion exchange ensures the unicity of salt in the inlet water of the MVR evaporation system.

This application provides an antenna assembly and an electronic device. The antenna assembly includes at least two antenna elements. Each antenna element includes: an antenna slot disposed on a metal frame of the electronic device and penetrating the metal frame along its thickness direction; a first grounding point and a second grounding point formed at both ends of the antenna slot along its length direction, wherein a first distance between the first grounding point and the second grounding point is related to the wavelength of the target radio frequency signal; the antenna slot is capable of radiating the target radio frequency signal under the excitation of a feed source in the electronic device.

The utility model relates to the field of yarn winding drum positioning, in particular to a take-up positioning mechanism of a yarn warping machine, which comprises a positioning component. The other end of the positioning assembly comprises a positioning shaft for inserting the yarn winding drum, a positioning strip for positioning the yarn winding drum and an adsorption part magnetically connected with the positioning strip, and the positioning assembly further comprises a pushing part for pushing the positioning strip to be away from the positioning shaft; the detection piece is arranged at the end part of the positioning assembly and is used for detecting the position of the positioning assembly sleeved with the yarn winding drum for winding; and a mounting plate. One end of the positioning shaft penetrates through the mounting plate and is connected with a transmission mechanism of the yarn warping machine so as to provide supporting force of the positioning shaft on the yarn warping machine; the positioning strip is located on the side, away from the center line of the positioning shaft, of the adsorption piece. According to the take-up positioning mechanism of the yarn warping machine, the adaptability of the yarn warping machine to the environment is improved, and high-risk high-pressure gas is prevented from being used.

The invention discloses a mirror image construction method and device, a medium and a program product, relates to the technical field of virtualization, is used for creating mirror images, and provides a mirror image construction method aiming at the problem that scripts and configurations need to be written respectively when mirror images are created in Docker and a virtual machine / bare computer at present, and the mirror image construction method is used for realizing analysis of Docker files and obtaining corresponding Docker file instructions by customizing a packet plug-in. And then each Docker file instruction is translated into an equivalent mirror image construction operation. And finally, the translated mirror image construction operation is executed through a packet core, so that mirror image creation in the virtual machine / bare computer based on Dockerfile is realized, the unicity of configuration is ensured, and the workload is also reduced.

The utility model belongs to the technical field of olfactory detection equipment, and particularly relates to a physical examination auxiliary device for olfactory examination. The physical examination auxiliary device for olfactory examination comprises a box body, an olfactory bottle rotating mechanism, a driving mechanism, a breathing mechanism and a control mechanism, a breathing window communicated with the interior of the box body is formed in the box body; the olfactory bottle rotating mechanism comprises a rotatable rotating disc, a plurality of olfactory bottles circumferentially distributed on the rotating disc and a shifting rod assembly arranged in the box body; the driving mechanism is arranged in the box body and is connected with and pushes the rotating disc to rotate; the breathing mechanism is arranged in the box body and is communicated with the breathing window and the olfactory bottle; the control mechanism is arranged in the box body and connected with and controls the shifting rod assembly, the driving mechanism and the breathing mechanism to work. The olfactory bottles are matched with the control mechanism through the rotating disc, the shifting rod assembly, the driving mechanism and the control mechanism, so that different olfactory bottles are communicated with the breathing mechanism, and a detector can smell different smells.

The oil mercaptan sulfur standard solution comprises n-dodecanethiol and isooctane, the content of hydrogen sulfide in the n-dodecanethiol is less than 3 μg / g, more preferably less than 1 μg / g; the purity of the isooctane is greater than 99.5 wt%, more preferably greater than 99.9 wt%, and the change range of the mercaptan sulfur concentration in the standard solution within 12 months is limited to 2%, more preferably less than 1%. The oil mercaptan sulfur standard solution uses isooctane as a solvent, which is closer to the molecular structure of light fuel but can ensure the singleness of the structure and the quality stability; n-dodecanethiol is used as the source of mercaptan sulfur, which ensures the high content and singleness of the mercaptan sulfur, and the change range of the mercaptan sulfur concentration in the obtained standard solution within 1 year is less than 2%.