31results about How to "Reserve space" patented technology

DC to DC converters and PWM controllers are presented in which a slope compensation ramp signal is provided for current control operation via a frequency adaptive compensation circuit with a phase locked loop that provides a control output signal having an amplitude generally proportional to the frequency of a clock signal, and a slope generator circuit generating the slope compensation ramp signal with an amplitude generally proportional to the control output signal amplitude.

The invention provides an end-to-end unsupervised optical flow estimation method based on an event camera, and relates to the field of optical flow estimation of computer vision. Aiming at overcomingthe defects that event camera data for optical flow estimation lacks a real optical flow value and event data needs to be manually made into event representation in advance, the invention provides anend-to-end unsupervised optical flow estimation method based on an event camera. The method comprises the following steps: preprocessing original data by using event streams output by an event camera,converting four-dimensional data into three-dimensional data, dividing each sample into a plurality of sub-sequences, independently processing each sub-sequence by using ConvLSTM, and splicing the sub-sequences according to channels after all the sub-sequences are processed to form three-dimensional data finally sent into an optical flow prediction network. An optical flow prediction network similar to a coder/decoder is adopted, luminosity error loss is designed by utilizing front and rear gray frames of event flow data output by an event camera at a fixed frequency, and smoothness loss is added to jointly serve as unsupervised loss, so that the network is promoted to finally estimate the optical flow.

The invention relates to a method for storing carbon dioxide gas in a goaf filled with a porous medium. According to the method, crushed gangue, pulverized fuel ash and cement are utilized for makingthe square porous medium; a band is filled with the square porous medium in a masonry manner in the well coal mine goaf along a coal face, effective supporting to a goaf top plate is formed, and long-time stability of the goaf top plate is ensured; after stoping of the whole coal face is finished, a gateway is closed, and a closed space is formed by the goaf filled with the porous medium; and finally, carbon dioxide gas generated by a heat-engine plant is injected into the closed space, and long-time storage to the carbon dioxide gas is formed. According to the method for storing the carbon dioxide gas in the goaf filled with the porous medium, the goaf is filled through coal mine solid waste, subsidence caused by goaf collapsing is avoided, an ideal space is provided for long-time storageof the carbon dioxide gas, and the greenhouse effect caused by carbon dioxide gas emissions is reduced.

The invention discloses Japanese encephalitis virus like particles as well as a preparation method and an application thereof. The Japanese encephalitis virus like particles are prepared by assembling a PrM/E gene of a Japanese Encephalitis virus (JEV) and a JEVRNA replicor with a nucleotide sequence as shown in SEQ ID NO: 1. The preparation method of the Japanese encephalitis virus like particles comprises the steps of: connecting the JEV PrM/E gene amplified by an RT-PCR (Reverse Transcriptase Polymerase Chain Reaction) to a plasmid pTRE-Tight of a Tet-on advance expression system to form a recombination vector, transfecting a Hela Tet-on advanced cell by using an Xfect method, after screening and identifying through HygB, obtaining a Hela cell line for controllably and stably expressing the PrM/E gene through a limiting dilution process, inducing for expressing a PrM/E protein, and packaging to obtain the conventional virus like particles; and transfecting the Hela cell line by using a JEV replicor RNA vector and packaging to obtain the virus like particles with a capacity of transient infection. The Japanese encephalitis virus like particles can be used for preparing a vaccine or used as a detection agent, has better immunogenicity and reactivity, and is safe and reliable.

The invention relates to a clostridium perfringens Beta toxin recombination subunit vaccine and a production method thereof. The prepared clostridium perfringens Beta toxin recombination subunit vaccine is produced by using a recombination clostridium perfringens Beta toxin protein which is processed by codon optimization and contains 4 amino acid mutations, namely integrity and spatial conformation of a natural toxin protein are reserved in the greatest degree, so immunogenicity of the natural toxin protein is kept, and a biological potential safety hazard caused by the single amino acid mutation is avoided. The vaccine further has the advantages of simple preparation process, low immunizing dose, good vaccine efficacy and the like. Compared with a current commercial clostridium perfringens natural toxin inactivated vaccine in China, a bio-safety risk in a vaccine production process is greatly reduced. The vaccine is a perfect candidate vaccine for updating a current C-type clostridium perfringens toxin vaccine in China. In addition, while a mixed vaccine is prepared by the vaccine with other antigens, the mixed vaccine can be prepared without increasing a using dose of the mixedvaccine.

The invention relates to the technical field of computer graphics and deep learning, and relates to a gesture recognition system, in particular to a three-dimensional gesture recognition system basedon a depth map. The three-dimensional gesture recognition system includes a camera, the camera is in signal connection with a depth sensor; the depth sensor is in signal connection with a data storagemodule; the data storage module is in signal connection with a data preprocessing module; the data preprocessing module is in signal connection with a segmentation module; the segmentation module isin signal connection with an input module; the distinguishing module is in signal connection with a static gesture analysis module and a dynamic gesture analysis module; the static gesture analysis module is in signal connection with a model construction module, the model construction module is in signal connection with a matching module, the matching module is in signal connection with a database, the dynamic gesture analysis module is in signal connection with a key point capture module, and the key point capture module is in signal connection with a function construction module. The systemhas the advantages that the reality sense is enhanced, and the man-machine interaction mode is enriched.

The invention relates to a gas scrubber, equipped with heat exchanger surfaces constructed from thermal sheets, suitable for cooling and purifying a hot gas, while avoiding excessive thermal loading of the scrubbing liquid.

The present invention relates to a non-toxic clostridium perfringens beta-toxin genetic engineering vaccine. The prepared clostridium perfringens beta-toxin recombinant subunit vaccine is produced bycodon-optimized production and multiple-amino-acid-mutation- containing recombinant clostridium perfringens beta-toxin proteins, thus maximally retains integrity and spatial conformation of natural toxin proteins, keeps immunogenicity, and also avoids biosafety hazards brought by single amino acid mutations. The vaccine also has advantages of simple preparation technology, low immune dose, excellent vaccine efficacy, etc., greatly reduces biosafety risks in vaccine production processes compared with current commercial clostridium perfringens natural toxin inactivated vaccines in China, and isan ideal candidate vaccine for upgrading of current type B and type C clostridium perfringens toxin vaccines in China; and when the vaccine and other antigens are commonly used to prepare a combined vaccine, dose of the combined vaccine cannot be increased and the combined vaccine can be prepared.

A glove in which a thumb, an index finger, a middle finger, a third finger, and a little finger, or a thumb, an index finger, a middle finger, and a shell portion, are formed at one side of a main body and an opening portion for insertion of a hand is formed at the other side, which includes an integrated sheet in which a front index finger having a thumb hole formed at a lower end thereof, extending from a finger end, and having a wing formed at a side surface thereof, a rear index finger, a rear middle finger, and a rear shell portion, are formed, and a finger piece having a separated cut middle finger and a shell portion and sewn between the finger end and the wing of the front index finger.

The invention provides an age prediction method, and the method comprises the steps: obtaining a plurality of face images of a target user, and forming an input image group; inputting the input image group into a pre-established first feature extraction model for spatial feature extraction to obtain a first feature map; inputting one face image of the input image group into a pre-established second feature extraction model for age feature extraction to obtain a second feature map; performing feature fusion on the first feature map and the second feature map to obtain a target feature map; and performing age prediction based on the target feature map to obtain the face age of the target user. According to the technical scheme, the recognition precision of the face age recognition model can be improved.

The invention discloses an index distribution method for communication satellite service interruption caused by a space single event. On the basis of fully considering the complexity of each single machine and each device and the single particle protection capability, index distribution is carried out according to the weight of each level of product, and the indexes of the number of times of service interruption allowed by a user are decomposed step by step into subsystems, single machines and bottom layer components. According to the method, the complexity and the single particle protection capability of each single machine and each device are fully considered, index distribution is performed according to the weight of each level of product, main factors influencing the whole satellite service are focused, and the rationality of index distribution and the design realizability are ensured. According to the method, overall designers are helped to decompose the requirements of users on service continuity into specific design indexes which can be operated by single machine and component designers, and landing and implementation of the requirements of the users and subsequent design verification are facilitated.

The invention provides a heat exchanger, especially a CO ₂ A gas cooler for a refrigerant cycle, comprising at least one collector divided into two longitudinal channels by a longitudinal partition, and a row of flat tubes whose ends fit into openings in the collector so as to align with the longitudinal The flow channels form a fluid connection.

The invention discloses a method, system and device for predicting task load based on deep learning and a storage medium; the method comprises the steps: constructing a directed adjacency matrix according to the temporal correlation and spatial correlation of historical task load of a platform, and constructing a short-time task load adjacency matrix according to the directed adjacency matrix; extracting a plurality of first features from the short-term task load adjacency matrix according to the time dimension and the space dimension, and constructing a plurality of short-term feature matrix sequences according to the first features; extracting a second feature from the short-term feature matrix sequence according to the periodic dimension; and fusing the first feature and the second feature, and based on the fused first feature and second feature, obtaining a predicted task amount in a future preset time period. According to the method, the task load of the platform can be predicted according to the time and space characteristics by constructing the digraph adjacency matrix of the task load of the platform node network.

The invention discloses a small microfluidic single-cell encapsulation instrument. The instrument comprises a microfluidic chip module, a mechanical module, a shell assembly and an electric control module, wherein the microfluidic chip module comprises a connecting module with a liquid storage chamber, an upper cover with a bulge matched with the connecting module, and a microfluidic chip; the shell assembly comprises a base with a special structure; and the electric control module comprises a power supply, a micro-processing chip, a motor driver and a circuit board. The invention provides a single-cell packaging platform which is low in price, easy and convenient to operate and high in automation degree. According to the invention, a sample injection needle driven by a precise stepping motor is used, so the use of an air pump is avoided, precision similar to the precision of a micro-injection pump can be maintained, and the production cost of the instrument is reduced; and an integrated and modular kit is adopted, so the whole design logic is compact, more accurate closed-loop control is realized, and the manufacturing difficulty of the instrument is reduced.

The invention discloses a multi-side safety fence. The multi-side safety fence comprises a plurality of fence sides. The fence sides are connected in an end-to-end mode to form a closed space. Joint connecting pieces are arranged at an upper joint and a lower joint of the junction of every two adjacent fence sides. The first fence side is a fence body capable of being opened and closed. Each joint connecting piece comprises an upper rotary piece, a lower rotary piece and a base platform, wherein the upper rotary piece, the lower rotary piece and the base platform are arranged in an up-down mode in sequence and coaxially rotate; a circular body of the upper rotary piece extends in the anticlockwise tangential direction to form an upper rotary arm, and a circular body of the lower rotary piece extends in the clockwise tangential direction to form a lower rotary arm; the lower portion of the upper rotary arm and the upper portion of the lower rotary arm protrude to form limiting structures for intersection of the upper rotary arm during clockwise rotating and the lower rotary arm during anticlockwise rotating, and a limiting included angle between the upper rotary arm and the lower rotary arm is formed. The shape of the multi-side safety fence can be changed by pulling the fence, so the multi-side safety fence is convenient to use; in the shape changing process, it is guaranteed that a certain space is reserved in the fence, and the safety of a baby and a pet in the fence will not be influenced.

The invention provides a protective mask and a mask machine for preparing the protective mask. The protective mask comprises a mask body, ear bands and an edge pressing sealing opening; the mask bodycomprises an impermeable layer, a filter layer and a protective layer; the end face, facing the outside, of the impermeable layer is coated with an after-finishing auxiliary agent; the filter layer comprises an inelastic fabric layer; the protective layer faces an organism wearing the protective mask; an edge sealing opening is formed in the edge of the mask body and comprises a first edge sealingunit and a second edge sealing unit, and the edge pressing sealing opening is fused with the mask body at the first edge sealing unit and the second edge sealing unit. One end of the first edge sealing unit is located at the position, close to the edge, of the mask body, and the other end of the first edge sealing unit extends towards the edge of the mask body till converging with the edge. The second edge sealing unit is in a dot shape or a strip shape and located between the first edge sealing unit and the edge of the edge sealing opening. After the protective mask is adopted, through the arrangement of the first edge sealing unit, burrs on the edge of the mask are thoroughly prevented, and meanwhile the production efficiency of the mask can be greatly improved.

The invention relates to the fields of electronic technology and intelligent household electrical appliances, and particularly to electronic equipment and a one-key starting/shutting-down circuit of the electronic equipment. The one-key starting/shutting-down circuit of the electronic equipment includes a light-touch switch, a voltage dividing module, a voltage converter and a controller. A function of one-key starting/shutting-down is realized through long pressing the light-touch switch (namely pressing the light-touch switch for first duration in a shutting-down state, and pressing the light-touch switch for second duration in a starting state), space of realizing other extended functions through shortly pressing the light-touch switch is retained at the same time, and thus multiple functions can be realized through the simple circuit.

The invention relates to a UV-cured drop-shaped effect coating and a using method thereof. The UV-cured drop-shaped effect coating is divided into finishing coat A and primer B. The finishing coat A is prepared from, by weight, 55-65 parts of UV-cured resin, 5-10 parts of UV photoinitiator monomers, 1.0-3.5 parts of a photoinitiator, 0.5-1.5 parts of auxiliaries and 20-30 parts of a solvent, the primer B comprises the following components in parts by weight: 85-100 parts of finish paint A and 0-15 parts of general color paste, wherein the UV curing resin is mixed resin of three kinds of resin,and the three kinds of resin are respectively Eternal 6071, Eternal 6172-1 and Eternal 621A-80. Compared with the prior art, the invention has the advantages of high drying speed, energy saving, environment friendliness, excellent performance, adjustable drop-shaped effect and the like.

The invention discloses a two-place communication method suitable for a South Pole astronomical guarantee platform, and the method comprises the steps: enabling the South Pole to locally initiate tasks, and enabling the tasks to run in parallel and to be mutually independent; the South Pole locally classifies various uploaded data, uploading of different types of data is mutually independent, tasks are initiated by adopting respective fixed periods, the maximum execution time of each task is limited, and the maximum flow of each type of data in respective flow period is limited; the method comprises the following steps: actively initiating a control command downloading task locally, resting for a fixed time after downloading all remote control commands, and then actively initiating a next control command downloading task; the specified file uploading and downloading task adopts a communication strategy that the task is initiated in a fixed period and the maximum execution time of each task is limited. According to the invention, two-place communication between the Antarctic local monitoring server and the remote monitoring server of the Antarctic astronomical guarantee platform can be realized, smooth communication between the two places is ensured, necessary information of platform operation is transmitted as timely as possible, and the method is a basis for long-term reliable operation of the platform.

The invention discloses a medical hand constraining mechanism and a constraining method. The medical hand constraining mechanism comprises two shells, wherein a grab handle is mounted between the two shells, two gear shaping fixing pieces and two spring columns are fixedly mounted on the shells, driven gear shaping limiting structures are mounted above the position between the two gear shaping fixing pieces, a spring is mounted on each spring column, the top end of each spring is connected with the corresponding driven gear shaping limiting structure, an insertion opening is formed in the position, above the corresponding gear shaping fixing piece, of each shell, the two driving gear shaping structures penetrate through the insertion openings to be mounted above the gear shaping fixing pieces and the driven gear shaping limiting structures, the two driving gear shaping structures are connected with a hand pressing plate through a rotating shaft, and spring wire pull rods are inserted into the grab handle through a shaft and are connected with a spring wire through a ball hinge point. The medical hand constraining mechanism is used for hand restraint in intensive care units and has the functions of electrocardiosignal transmission, blood oxygen monitoring and functional exercise in the recovery period.