System for provide safe function of paying towards terminal equipment

The utility model discloses a system for provide safe function of paying towards terminal equipment, include: baseband chip, standard transmission interface to and integrated biological characteristics collector of being in the same place and data security chip, wherein: the biological characteristics collector for realize the collection of user's people's face, iris, fingerprint, finger vein and vocal print characteristic, the data security chip for user biological characteristics and dealing data to gathering carry out data security processing and storage, and the user profile after still being used for handling based on data security when paying carries out user id's verification, standard transmission interface for realize baseband chip and biological characteristics collector and data security chip data communication, the baseband chip for the data communication of implementation system and service end, thus realize mobile payment and/or authentication. The utility model discloses ...

Passively driven liquid crystal display

Leucine dehydrogenase mutant and application thereof in production of L-2-aminobutyric acid

The invention discloses a leucine dehydrogenase mutant and application thereof in production of L-2-aminobutyric acid, and belongs to the technical field of enzyme engineering and microbial engineering. The leucine dehydrogenase mutant disclosed by the invention is obtained by mutating 125th valine of leucine dehydrogenase with an amino acid sequence as shown in SEQ ID NO.1 into methionine, the amino acid sequence of the mutant is as shown in SEQ ID NO.3, and the nucleotide sequence of the mutant is as shown in SEQ ID NO.4. The catalytic activity of the leucine dehydrogenase mutant is improved, and compared with a wild type, the enzyme activity of the mutant enzyme is improved by 55%. Under the condition of 300 mM of sodium 2-oxobutyrate, the conversion rate can reach 94% or above after the reaction is performed for 6 h.

Bayer image denoising method

The invention discloses a Bayer image denoising method. The method includes: selecting a 5*5 Bayer matrix with a pixel of a Bayer image as a central pixel; extracting pixels in the same channel as the central pixel from the 5*5 Bayer matrix so as to form a 3*3 matrix centering on the central pixel; according to pixel values of the central pixel of the 3*3 matrix and adjacent pixels, judging an image area where the central pixel locates; if the central pixel is not in the edge or a detailed area of the Bayer image, calculating weighted values of the corresponding adjacent pixels according to differences between the pixel values of the central pixel and the adjacent pixels, and denoising the central pixel through according to the pixel values of the corresponding pixels to acquire a denoised pixel value. The method is used to solve the problems in image brightness and chromatic noise, the edges and details of the image can be well protected, little space is occupied, and the cost is low.

Omega-transaminase mutant and application thereof in production of L-2-aminobutyric acid

The invention discloses an omega-transaminase mutant and application of the omega-transaminase mutant in production of L-2-aminobutyric acid, and belongs to the technical field of enzyme engineering and microbial engineering. The omega-transaminase mutant is obtained by mutating the 153th valine of omega-transaminase with the amino acid sequence shown as SEQ ID NO.1 into alanine, the amino acid sequence of the mutant is shown as SEQ ID NO.3, and the nucleotide sequence of the mutant is shown as SEQ ID NO.4. The invention further discloses a preparation method of the omega-transaminase mutant. The catalytic activity of the omega-transaminase mutant is improved, and compared with a wild type, the enzyme activity of the mutant enzyme is improved by 578%. Under the condition of 300 mM of sodium 2-oxobutyrate, the conversion rate can reach 76% or above after the reaction is performed for 12 h.

Leucine dehydrogenase combined mutant and application thereof in production of L-tertiary leucine

The invention discloses a leucine dehydrogenase combined mutant and application thereof in production of L-tertiary leucine, and belongs to the technical field of enzyme engineering and genetic engineering. The leucine dehydrogenase mutant is obtained by mutating the 123 < th > glutamic acid, the 125 < th > valine and the 143 < th > threonine of leucine dehydrogenase with the amino acid sequence shown as SEQ ID NO.1 into valine, methionine and cysteine respectively, and the nucleotide sequence of the mutant is shown as SEQ ID NO.2. The invention further discloses a preparation method of the leucine dehydrogenase mutant. The catalytic activity of the leucine dehydrogenase mutant is improved, and the enzyme activity of the mutant enzyme is improved by 206% compared with that of a wild type. And under the condition of trimethylpyruvic acid with the concentration of 600mM, the conversion rate can reach 98% or above after the reaction is performed for 14 hours.

Processing method and device for acquiring camera parameters and electronic equipment

The invention discloses a processing method and device for acquiring camera parameters and electronic equipment. The method comprises the following steps: acquiring camera end data; and based on a preset multimedia architecture, analyzing supplementary enhancement information of a video stream in the camera end data in a network abstraction layer unit to obtain exposure timestamp information of the camera end. According to the invention, accurate acquisition of camera parameters is realized. And meanwhile, the real-time performance of data processing at the camera end is ensured. The method can be used for roadside application of vehicle-road cooperation.

Physiological indication prediction model construction method and device, equipment and storage medium

The invention discloses a construction method and device of a physiological indication prediction model, equipment and a storage medium. The method comprises the following steps: acquiring corresponding physiological index data of L objects under S physiological indexes; extracting M pieces of physiological index data corresponding to the M objects from the physiological index data corresponding to the L objects, and extracting the physiological index data corresponding to the N objects for T times to obtain T physiological index data sets; performing cross validation on the M pieces of physiological index data, and selecting physiological indexes of which the index coefficients are not zero to obtain a first physiological index set; selecting physiological indexes of which the occurrence frequency is greater than a preset threshold value from the T physiological index data sets to obtain a second physiological index set; and determining the physiological indexes existing in the first physiological ...

Passenger compartment thermal load simulation modeling method based on Amesim, terminal and medium

The invention discloses an Amesim-based passenger compartment thermal load simulation modeling method, a terminal and a medium, and belongs to the technical field of automobile simulation, and the method comprises the steps: dividing the whole passenger compartment into a front compartment, a rear compartment and a trunk according to the requirement of average temperature prediction in a one-dimensional compartment, respectively establishing one-dimensional models of the front cabin, the rear cabin, the luggage case and the corresponding parts through heat exchange analysis; and inputting main material physical property parameters of each component into the one-dimensional model of each component in Amesim software, connecting and coupling to form an overall model of the passenger compartment, setting corresponding boundaries respectively, and predicting the average temperature change of the passenger compartment under different working conditions. According to the method, heat decomposition ...

Electron radiation protective cover

The invention relates to an electron radiation protective cover, and belongs to civil labor protective articles. The protective cover comprises a protective cover body and a protective cover lining, a zipper is arranged at the lower end of the lining, and the protective cover body and the lining are made of excellent pure cotton cloth. The protective cover is characterized in that lining materials are arranged on the lining, and the lining materials include a lead plate and radiation protection cloth. Nylon hook-and-loop fasteners are arranged on the left edge of the protective cover and the right edge of the protective cover. A zip-fastener is fixed to an opening in the lower end of the lining, and by means of the zip-fastener, the lining can be closed, and the lining can be taken away so that the protective cover can be cleaned. The protective cover is tied and worn on the human neck, the parathyroid gland is protected, radiation is prevented from stimulating the parathyroid gland, and ...

Automatic stereo display

Car performance estimation method based on car logo data analysis

The invention discloses an automobile performance estimation method based on benchmarking automobile data analysis, and the method comprises the steps: carrying out the normal distribution analysis of all on-sale automobile model data of a current market as a sample according to the automobile model screening performance data, obtaining the performance indexes corresponding to different market occupancy, and carrying out the subdivision market analysis according to the specific automobile model level and other information; further, the year-by-year change condition can be analyzed according to the benchmarking vehicle performance data, the future performance development trend is estimated accordingly, and the market performance target of the researched and developed vehicle model is estimated in combination with the current performance level distribution; and according to the performance level and the subsystem performance association relationship, analyzing the subsystem parameter level ...

Method for determining chloride ions in mecobalamine by using ion chromatography

The invention discloses a method for determining chloride ions in mecobalamine by ion chromatography, which comprises the following steps: preparing a reference solution: taking a chlorine single element standard solution, adding a diluent, and diluting to prepare a solution containing 0.1 mg of chloride ions per 1ml; preparing a test solution: taking mecobalamin, and adding a diluent to prepare a solution containing 1mg of mecobalamin per 1ml; preparing a blank solution, namely ultrapure water; setting ion chromatography conditions for determination: sucking 25 microliters of a blank solution, 25 microliters of a reference solution and 25 microliters of a test solution, injecting the solutions into an ion chromatograph for determination, recording a chromatogram, and calculating the content of chloride ions in mecobalamine by an external standard method; wherein a mobile phase is a potassium hydroxide solution with the concentration of 18 mmol/L to 22 mmol/L, the current is 30 mA to 50 ...

Physical health-care pillow

The invention discloses a physical health-care pillow. According to the physical health-caring pillow, trees with positive attributes are selected to be used as materials, and special size design is conducted on the height, length, width and radian of the wood pillow. When a user lies on the pillow for sleep, the Taodao acupoint on the spine and the Hui acupoint and Dazhu acupoint on the bone next to the spine of the user are stimulated to promote secretion of osteogenic factors, the bone mineral density is enhanced, and the health-caring effect is achieved.

Heart rhythm state detection method and device, intelligent wearable equipment and storage medium

The invention relates to the technical field of heart rhythm state detection, and discloses a heart rhythm state detection method and device, intelligent wearable equipment and a storage medium, and the method comprises the following steps: obtaining an initial photoelectric volume pulse wave signal, and preprocessing the initial photoelectric volume pulse wave signal to obtain the photoelectric volume pulse wave signal; performing feature extraction on the photoelectric volume pulse wave signal through a trained one-dimensional convolutional neural network model to obtain a first feature, and performing feature extraction on the photoelectric volume pulse wave signal through a trained auto-encoder neural network model to obtain a second feature; at least splicing the first feature and the second feature to obtain a first input feature of the neural network; and detecting the first input feature of the neural network through a trained neural network model used for representing the heart ...

Risk level prediction device and computer storage medium

The invention discloses a risk level prediction device and a computer storage medium, and the device comprises a first obtaining module which is used for obtaining the physiological index data of a target object, and the physiological index data comprises first index data and second index data; the first prediction module is used for predicting a first risk value of the target physiological indication of the target object according to the first index data by using a first prediction model, and determining an initial risk level corresponding to the target object according to the first risk value; the first determination module is used for determining a second prediction model corresponding to the initial risk level under the condition that the initial risk level is greater than or equal to a preset risk level; and the second prediction module is used for predicting a second risk value of the target physiological indication of the target object according to the second index data by using ...

Roadside sensing method and device, electronic equipment and storage medium

The invention discloses a roadside sensing method and device, electronic equipment and a storage medium. The method comprises the following steps: receiving first sensing information of roadside sensing equipment; determining a first roadside sensing scene according to the first sensing information; and calling a corresponding first sensing fusion strategy in a roadside configuration file according to the first roadside sensing scene, and performing sensing fusion on the scene of the target area. According to the invention, different perception fusion strategies are selected for the perception environment in a typical scene, and the accuracy and robustness of road side perception are improved.

Road end camera driving delay time calculation method and device, electronic equipment and storage medium

The invention discloses a road end camera driving delay time calculation method and device, electronic equipment and a storage medium. The method comprises the following steps: monitoring camera parameters of a road end camera in a current shooting environment in real time; second driving delay time of the road end camera is calculated in real time according to the camera parameters; the first driving delay time of the road end camera is optimized and compensated according to the second driving delay time of the road end camera, the final driving delay time of the road end camera is obtained, and the first driving delay time is the fixed driving delay time of the road end camera. According to the invention, the driving delay time of the camera can be reduced, and the synchronization of the target object in the real scene and the monitoring scene is realized.