53results about How to "Improve application breadth" patented technology

The invention discloses a construction method and an application of the high-efficiency soybean CRISPR/Cas9 system. Staphylococus aureus Cas9 protein undergoes split expression; and in order to improve editing efficiency and broad spectrum, a soybean SaCas9 editing system is constructed. According to the construction method provided by the invention, a low-efficiency editing system is transformedinto the high-efficiency editing system, so that the application scope of editing soybean genome is widened, and meanwhile, a new thought is provided for solving a problem on crop genome editing efficiency in the future.

The invention provides a method for improving pressure resistance of magnetic liquid seal in a low-temperature working environment, belongs to the technical field of sealing of mechanism engineering, and in particular applies to magnetic liquid seal. The method comprises the steps of selecting a ferromagnetic material with high permeability and large expansion coefficient, and an alloy steel material with small thermal expansion coefficient and high comprehensive mechanical performance; manufacturing a pole shoe with the ferromagnetic material; manufacturing and processing a composite material shaft being 50 to 100mm in diameter by using the ferromagnetic material and the alloy steel material as an outer layer material and an inner layer material, respectively, wherein the radial length ratio of the ferromagnetic material layer to the alloy steel material layer is 1: 3; applying the pole shoe and the composite material shaft into a magnetic liquid seal device of which a gap ranges from 0.1 to 0.25. With the adoption of the method, the shortages of the existing method for magnetic liquid seal under a low temperature can be overcome, the problem of applying to magnetic liquid seal in a low-temperature environment is solved, the applicable scope of magnetic liquid seal is expanded, and the method is of an important significance.

A high resolution remote sensing image oriented large scale semi-supervised feature selection method belongs to the technical field of semi-supervised feature selection. The present invention aims to solve the problems that in an existing high resolution remote sensing image supervision feature selection method, a large amount of training data needs to be marked and when the number of unmarked objects is much greater than marked data, rationality of selected features is influenced. The method comprises the steps of firstly, collecting remote sensing image data and obtaining normalized data x after performing processing on the remote sensing image data; then building a metric function of a probability distribution matrix {y<jk>} based on a loss function and unmarked samples; sequentially performing loop optimization on three parameters of the metric function and obtaining corresponding metric values of corresponding features; and according to the metric values, ranking the features, and obtaining a feature subset of the remote sensing image data, wherein the feature subset is used as data selected and acquired by the large scale semi-supervised feature selection method. The high resolution remote sensing image oriented large scale semi-supervised feature selection method, disclosed by the present invention, is used for feature selection of a remote sensing image.

The invention discloses a vibration signal conditioning and data converter which comprises an accelerometer vibration sensor, a vibration detection circuit module and a digital circuit module. The vibration detection circuit module comprises a constant current source circuit, an input amplifier, a program control amplifier, an output amplifier, an integrator, an analog switch, an anti-aliasing filter and an ADC connected successively, the acceleration vibration sensor is connected with the constant current source circuit and the input amplifier, and the digital circuit module is connected withthe program control amplifier, the analog switch, the anti-aliasing filter and the ADC. Thus, vibration acceleration, speed and displacement signals can be converted flexibly, corresponding conversion can be carried out according to different vibration signal expression manners of monitoring points, the vibration monitoring requirement of a wind turbine generator system shafting can be met. and data support is provided for state monitoring of the whole wind turbine generator system.

The invention relates to a high-precision part deviation detection system based on a 3D visual algorithm. The high-precision part deviation detection system comprises a detection box body, a supporting circular truncated cone, an ultrasonic detector, a guide rail, a camera, a searchlight and a central controller, wherein the components are precisely controlled by the central controller, control parameters are adjusted, and the difference of detection results caused by the difference of part bodies is reduced; the central controller detects whether a shot image reflects light or not and adjuststhe light brightness, a shooting angle of the searchlight and a position of the searchlight on the guide rail; the central controller establishes model coordinate data according to the 3D algorithm,determines the integrity of acquired data, performs defect detection on qualified part data, and improves the defect detection precision; and an ultrasonic sensor is further arranged to detect the internal defects of the hollow parts in an ultrasonic detection mode, so that the application range of the high-precision part deviation detection system is widened, and the defect detection precision ofdifferent parts is improved.

The invention relates to a preparation method of a sea cucumber visceral polypeptide. The preparation method comprises the steps as follows: a sea cucumber visceral frozen product is subjected to thawing, enzymatic hydrolysis, centrifugation, concentration and drying steps, wherein a compound enzyme is used in the enzymatic hydrolysis step, and the compound enzyme is a combination of lipase and protease. The compound enzyme is the combination of collagenase, papain and lipase. The preparation method has the benefits that: the flavor, including odor and mouthfeel, of sea cucumber visceral polypeptide products can be significantly improved, the color of the sea cucumber visceral polypeptide products can be effectively improved, the yield can be increased, and the cost of the products can bereduced.

The invention provides a manipulator with an adjusting structure. The manipulator comprises a moving base which has a plurality of degrees of freedom of operation, and an adjusting module of which one end is chained with the moving base, wherein the adjusting module comprises a main body, a sleeve, a fixing part and combining means; the main body extends in a direction to form an elongated structure, and the extending direction is defined to be an axis direction; outer threads and an axial groove are formed in the outer edge surface of the main body; the sleeve is provided with a through hole sleeved with the outer threads; a bulge corresponding to the groove is arranged on the inner edge surface of the through hole; the bulge is stored into the groove to limit the degree of freedom of the sleeve rotating relative to the main body; the fixing part is provided with a through hole of which the inner edge surface is provided with inner threads, and the inner threads are screwed to the outer threads in the main body; the fixing part is fixed on one end surface of the sleeve through the combining means.

The invention discloses a method for improving the pressure-resistant capacity and the working reliability of a magnetic fluid seal in a high-temperature working environment, belongs to the technical field of mechanical engineering seals, and is particularly applicable to the magnetic fluid seal. An iron-nickel alloy material with the anomalous thermal expansion characteristic and a ferromagnetic material with the larger thermal expansion coefficient and good comprehensive mechanical properties are selected, pole shoes and a sealing shaft which are matched with each other are made of the selected ferromagnetic material, pole shoe sleeves which are in interference fit with outer rings of the two pole shoes are made of the selected iron-nickel alloy material, and the radial width ratio of each alloy sleeve to each pole shoe is 1:2. With the adoption of the method, defects of existing methods for the magnetic fluid seal at the high temperature are overcome, and the method has the important significance in solving usage problems of the magnetic fluid seal in the high-temperature environment and broadening the application range of the magnetic fluid seal.

The invention discloses a local error driving isogeometric analysis computational domain self-adaptive optimization method. An isogeometric analysis method requires the optimization on all internal control top points, so the isogeometric analysis method is only applicable to a condition that a computational domain is in a simple shape. According to the method, firstly, a residual method is utilized for obtaining a local error indicator on a computational domain sub chip; then, a control top point set to be optimized is determined according to a local marking strategy; the optimum distribution of the marked internal control top points is obtained through marking the error indicator on a curve chip; a self-adaptive (h-r) type refinement algorithm is provided on the basis of a self-adaptive r type refinement algorithm; and the optimum parameterization of the computational domain is obtained. The method has the advantages that the simulation emulation efficiency and the isogeometric analysis solving precision are improved; the r type refinement algorithm can be applied to CAD models with complicated geometrical shapes; and the application range of the isogeometric analysis method is widened.

A steering characteristic simulation experimental device of a static push-abut type rotating steering drill tool assembly comprises a simulation bottom drill tool assembly, a simulation shaft arrangedto be out of the simulation bottom drill tool assembly in a sleeving mode, an experiment table and a drill tool position adjusting frame. The simulation bottom drill tool assembly comprises a flexible short section, a simulation stabilizer, a matching joint, a central spindle, a non-rotating sleeve and a simulation drill bit which are connected sequentially along a simulation drill collar. The experiment table comprises a drill bit stress monitoring table, a support cylinder and a sleeve which are sequentially arranged in the axial direction. The drill tool assembly position adjusting frame is used for adjusting the position of the simulation bottom drill tool assembly in the perpendicular direction and / or obliquely adjusting the position of the simulation bottom drill tool assembly inthe perpendicular direction. The steering characteristic simulation experimental device of the static push-abut type rotating steering drill tool assembly can simulate the steering function of the static push-abut type rotating steering drill tool assembly used in the practical well drilling process, and a complex well drilling site experiment is converted into an indoor experiment. The experimenthas the advantages of being high in practicability and low in cost.

The invention relates to the field of image processing, and discloses an image processing method and device, electronic equipment and a computer readable storage medium, and the method comprises the steps: determining a to-be-processed image frame in video information, and detecting whether the to-be-processed image frame comprises facial features or not; if one or more facial features are included, obtaining a plurality of basic feature points corresponding to the facial features, and determining fitting polynomial coefficients corresponding to the facial features according to the basic feature points corresponding to the facial features respectively; and then based on the obtained densification processing parameters, according to the fitting polynomial coefficients corresponding to the facial features respectively, carrying out densification processing on a plurality of basic feature points corresponding to the facial features respectively. According to the method provided by the embodiment of the invention, the number of the feature points is greatly increased, the accuracy of specific processing on the facial features and the natural degree of the facial features subjected to specific processing are greatly improved, and the user experience is improved.

The invention discloses a message forwarding method, device and system and a computer readable storage medium, and relates to the field of data communication. The message forwarding method comprises the steps that a service function forwarder SFF obtains an entropy value in an entropy field from a header of a service function chain SFC message, and the entropy value is determined according to transmission information of flow corresponding to the message; the SFF determines a forwarding path of the message according to the entropy; and the SFF forwards the message to the determined forwarding path. According to the embodiment of the invention, messages with the same flow can be forwarded through the same path, and the messages with different flows realize load sharing, so that the dependence on a specific protocol is reduced, and the application range of flow load sharing is improved.

The invention discloses a non-contact fiber permeability measurement system and method. The non-contact fiber permeability measurement system comprises a mold device, a fluid supply device, a capacitance detection device and a permeability conversion device. The mold device comprises an upper plate, a lower plate and a fluid input port. The lower plate is arranged below the upper plate in paralleland forms an accommodating space with the upper plate. The accommodating space is used for accommodating a fiber fabric to be tested, and the fiber fabric to be tested is insulated from the upper plate and the lower plate. The fluid input port penetrates through the upper plate. The fluid supply device is connected with the mold device and used for supplying fluid to be injected into the accommodating space through the fluid input port. The capacitance detection device is electrically connected with the outer surface of the upper plate and the outer surface of the lower plate and used for detecting the capacitance value of the accommodating space. The permeability conversion device is electrically connected with the capacitance detection device, receives the capacitance value and is usedfor converting the capacitance value into permeability. Therefore, the non-contact fiber permeability measurement system can be widely applied and can be used for measuring more kinds of fiber fabrics.

The invention discloses a rhizoma cimicifugae hemorrhoid breaking decoction. The rhizoma cimicifugae hemorrhoid breaking decoction is a fixed traditional Chinese medicine prescription. The rhizoma cimicifugae hemorrhoid breaking decoction is characterized by being prepared from the following raw medicinal materials in parts by weight: 10-30 parts of rhizoma cimicifugae, 5-15 parts of radix angelicae, 5-15 parts of radix ligustici sinensis, 5-15 parts of raw rhizoma atractylodis macrocephalae, 5-15 parts of raw rhizoma alismatis and 5-15 parts of vinegar rhizoma sparganii. Diagnostic standards and curative effect standards of 'guide for clinical diagnosis and treatment of hemorrhoids' (2006) (hereinafter referred to as 'guide') are executed; the causes of haemorrhoids are analyzed by using a new theory of traditional Chinese medicine, and a treatment rule and a prescription are determined; and the empirical evidence shows that the rhizoma cimicifugae hemorrhoid breaking decoction can avoid postoperative pain and sequelae risks of a patient caused by operative treatment, widens the symptom type range of hemorrhoids treated by oral medicine, accelerates the healing speed of the hemorrhoids, reduces the recurrence probability of the hemorrhoids, and also saves the cost at the same time.