52results about How to "Low universality" patented technology

The invention relates to a preparation method of an antibacterial silk fibroin fibrous membrane. The preparation method comprises the following steps: dissolving silver salt into water and adding aqua ammonia to form clarifying transparent silver ammino and an ionic solution firstly; adding water-insoluble fatty alcohol, and adopting a microwave irradiation technology to prepare silver nanoparticles; adding the obtained silver nanoparticles into a prepared silk fibroin solution, mixing the obtained silver nanoparticles and the prepared silk fibroin solution, so as to form a spinning solution; then preparing the antibacterial silk fibroin fibrous membrane through a static spinning technology. According to the preparation method provided by the invention, the method is simple, an interface system is regarded as a reaction medium, so that the products can be transferred between different phases, the surface adsorbent can be replaced, and good uniformity of the nanoparticles can be guaranteed; the microwave irradiation technology is adopted, so that the crystallization speed of the products can be improved, the operating steps are simple, the cost is low, the reaction speed is high, the efficiency is high, and a certain universality is provided; the nano-silver has hydrophobicity and can be dispersed into the silk fibroin solution very well, which is further in favor of preparing antibacterial silk fibroin membrane with good uniformity.

The invention relates to a halloysite nanotube drug sustained-release material and a preparation method thereof. The drug sustained-release material is prepared by the following steps: performing acid corrosion to a halloysite nanotube to obtain a dilated nanotube, loading the drug into an inner cavity of the halloysite nanotube, and coating an organosilane polymerized hydrophobic layer onto the surface of the drug-carried halloysite nanotube, wherein the during the coating of the organosilane polymerized hydrophobic layer, organosilane I is firstly used for modifying the outer surface of the halloysite nanotube, and then organosilane II is added to form the organosilane polymerized hydrophobic layer on the surface of the nanotube. Compared with the prior art, the sustained release material has universality on a hydrophobic drug and a hydrophile drug, the drug release time can be effectively prolonged, the encapsulation efficiency is high, and the administration safety of the drug can be improved.

The invention discloses a system and method for carrying out phase calibration. The system is composed of a direction-finding antenna array, a calibration device, a rotary table, and a direction-finding receiver. The calibration device consists of an input terminal and an output terminal; and the input terminal is connected with the direction-finding antenna array. The rotary table includes a first end and a second end; and the first end is connected with the output terminal. The direction-finding receiver includes a direction-finding receiver internal channel and a direction-finding receiver processor; and the direction-finding receiver processor is connected with the second end. The calibration device is controlled by the direction-finding receiver to transmit a radio-frequency calibration signal; the signal passes through the rotary table and the direction-finding receiver internal channel and then is sent to the direction-finding receiver processor; the direction-finding receiver processor carries out phase measurement on the radio-frequency calibration signal; phase adaption errors between receiving channels except the direction-finding antenna array among the receiving channels in the system are obtained, so that phase calibration of the receiving channels except the direction-finding antenna array can be completed based on the phase adaption errors.

The invention provides a moving-target adaptive direction-finding, positioning and tracking method based on multi-star collaboration. The method comprises following steps: multiple satellites in orbitsynchronously or asynchronously acquire time-varying sight line vector information of a moving target, one satellite is selected as a primary satellite, and the other satellites are used as auxiliarysatellites; the auxiliary satellites send sight line measurement data and positioning assisted data to the primary satellite through inter-satellite links; least square estimation of an initial stateis performed by a constant-velocity motion model, and an initial covariance matrix is set according to measurement noise of a target azimuth; a motion state and a covariance matrix of the target at the current observation moment are predicted by adopting a 12-state linear motion model; a Jacobian matrix of azimuth measurement values is calculated through combination of the positioning assisted data and the predicted motion state at the current moment, filter gain is calculated according to the measurement noise covariance matrix, and finally, the motion state of the target at the current moment is estimated according to real measurement.

The invention discloses an ion-doped tin dioxide porous film type gas sensitive device and a method for manufacturing same. The device is a gas sensitive film which is coated on a substrate and an electrode and consists of more than one layer of spherical poroid tin dioxides which are arranged tightly and hexagonally and communicated with one another and are doped with palladium ions or chromium ions. The method comprises the following steps: attaching a colloid ball to the surface of the substrate to form a single-layer colloid crystal template; then adding palladium chloride or chromium trichloride into tin tetrachloride solution of which the concentration is between 0.05 and 0.2 M to obtain precursor solution; dipping the single-layer colloid crystal template into the precursor solution first, using the substrate with an electrode and a required shape to fish out the single-layer colloid crystal template, covering the single-layer colloid crystal template on the surface of the substrate, and then heating the substrate at a temperature of between 80 and 120 DEG C for 1 to 4 hours; and repeating the steps of dipping, fishing out and heat curing for more than 0 time, and annealing the substrate at a temperature of between 350 and 550 DEG C for 1 to 4 hours to obtain the ion-doped tin dioxide porous film type gas sensitive device. The ion-doped tin dioxide porous film type gas sensitive device can be widely applied to performing selective detections on mixed gases.

This invention is Pb @ PVA superconducting nano-coaxial cable and preparation methods, its character is three hydration will lead acetate, polyvinyl alcohol and polyvinylpyrrolidone on quality than 5 +- 0.5:5 +- 0.5:1 soluble B diol which reside Pb (CH3COO) 2 . 3 H2O concentration of 0.015-0.018 g / ml, load the reactor to 60-80% in volume, after the slow warming confined to 185-200 Deg.C, holding 12 to 24 hours, Cleaning products using ethanol and centrifugal separation, which were endorsed by the length of 1-10 mu m, a diameter of 80-200 nm cubic crystal Pb nanowires for batteries, thick 10-50 nm PVA polymer layer for the parcels Pb @ PVA superconducting nano-coaxial cable; has good oxidation resistance and superconductivity. The invention method is simple, homogeneous product, the mild reaction conditions, easily extended to all kinds of different material systems.

The invention discloses a complex method for improving efficiency of chalcopyrite leaching conducted through sulfur oxidation cultures and belongs to the technical field of biology. The method comprises the steps that on the basis of a Starkey-chalcopyrite composite culture medium, an external-source energy substrate, namely elemental sulfur, is supplemented in a pulsed manner at the middle and later culture stages, and high-density culture of thiobacillus thiooxidans is achieved; a proper amount of elemental sulfur and iron ions are added while cell inoculation is conducted, start of a leaching biochemical reaction cycle is accelerated, the lag phase is shortened, and the inoculum size is increased; and at the later leaching stage, the low constant pH is maintained, jarosite stress is inhibited, sulfur oxidation culture cells are added as supplementation, iron metabolism is promoted while sulfur metabolism is improved, and furthermore, the leaching microenvironment is improved. By means of the method, the sulfur oxidation cultures can be cultured more efficiently, the leaching lag phase is shortened, and active biochemical reaction state of the leaching microenvironment is maintained better, and thus the leaching rate is increased; and in addition, the method is easy to operate and implement and suitable for being applied and popularized in similar bioleaching processes on a large scale.

The invention discloses an intelligent traffic guidance method and system of a small micro-intersection with nonideal lateral visual degree. The intelligent traffic guidance method is characterized in that the system is integrated by connecting a probe (1) which can adjust a detection range, a wireless information transmitter and receiver (2) with a channel distinguishing function, a warning screen (3) with text, voice and direction warning functions and a solar panel (4).The method comprises the following steps that when the each side of the small micro-intersection is shield by building and the like, so that the visual degree between opposite lateral road surfaces is not ideal, people and vehicles simultaneously move forward within the specific safety distance m of the opposite lateral road surfaces, and warning tips of the system installed on the road surfaces where the people and the vehicles are located can be obtained correspondingly; and existence of the people and vehicles and information of moving forward of intersection direction are foreknown in advance, the fact that collision and other traffic accidents happen in the small micro-intersection due to the nonideal lateral visual degree is avoided, and peace passage, orderly passage and safe passage are achieved.

The invention provides an air conditioning control method and device, storage media and an air conditioner. The air conditioning control method comprises the following steps that a skin electrical signal value, a sweating sensing predicted value or a thermal comfort degree level value for a target user at present are obtained; a preset skin electrical signal value, a preset sweating sensing predicted value or a preset thermal comfort degree level value corresponding to the target user are obtained; and according to a first difference value between the current skin electrical signal value and the preset skin electrical signal value, a second difference value between the current sweating sensing predicted value and the preset sweating sensing predicted value, or a third difference value between the current thermal comfort degree level value and the preset thermal comfort degree level value, the air conditioner is controlled to operate, and / or according to the current skin electrical signal value, the sweating sensing predicted value or the thermal comfort degree level value, the air conditioner is controlled to operate. The air conditioning control method can more accurately respondthe true feeling of human bodies so that the air conditioner can be controlled more accurately.

The invention discloses a two-dimensional cellular automaton evolution rule classification method and belongs to the technical field of a cellular automaton. According to the method, under the random initial conditions, statistics of change conditions of cellular states of each position in the certain-scale evolution space is carried out, and classification is carried out; if within plenty of continuous time steps, the evolution space at each time and the stable evolution space have non-big difference, and the evolution space is a stationary type; if within plenty of continuous time steps, one period exists, the evolution space at each time in the period and the evolution space at the time of the next period have non-big difference, the evolution space is a period type; if within plenty of continuous time steps, the evolution space at each time is complex, the evolution space at one time has a relatively large quantity of cellulars in an update state compared with the evolution space at the previous time, update is irregular, the evolution space is a complex type; otherwise, the evolution space is a confused type. The method is advantaged in that the method can be applied to image encryption and image compression, application evolution rules are wide, and accurate classification can be realized.

A method for user matching is provided. A matching request is received from a client. The matching request includes an application identifier and a user identifier. When the application identifier indicates that a matching mode for the matching request is an asynchronous mode, a matching queue identifier is obtained based on the matching request, the user identifier is added to a matching queue corresponding to the matching queue identifier, a predetermined number of user identifiers is selected from the matching queue, a matching result is generated that includes an identifier of a matching group of the selected predetermined number of user identifiers, and the matching result is sent to the client. The predetermined number of user identifiers includes the user identifier in the matching request.

The invention discloses an intelligent going-out mirror. Based on the fact that an atomic mirror reflects different rays of light in environments with different luminosity, a single-side visual 'common mirror' is constructed. Moreover, aiming at a principle of high efficiency and low power consumption, a STM32F103 series controller and a MBF200 fingerprint sensor are used for constructing a hardware system. The intelligent going-out mirror provided by the invention has the advantages of stability and low-power consumption, and fingerprints used as a biological feature for identity recognition has the characteristics of stability, uniqueness and universality.

The invention discloses a multi-frequency sound-energy generator, an ultramicro sound-energy integrated sewage treatment system and a treatment method, and belongs to the field of sewage treatment. The multi-frequency sound-energy generator comprises a water storage tank. The water storage tank is connected to several ultrasonic transducers which are transducers with several frequencies arranged at intervals. The ultramicro sound-energy integrated sewage treatment system is connected to a water inlet pipe of the multi-frequency sound-energy generator through a pipeline, and a water outlet pipe of the multi-frequency sound-energy generator is connected to a reaction tank. The reaction tank is successively provided with a pre-denitrification biochemical pool, an anaerobic biochemical pool, an unbalance aerobiotic biochemical pool and a sedimentation and filtration tank. The middle-upper part of the unbalance aerobiotic biochemical pool is equipped with a high-load aerobiotic packing, and the bottom of the unbalance aerobiotic biochemical pool is connected to an inlet end of an external ultramicro dissolved air generator, an outlet end of which is connected to a releaser set arranged at the bottom of the unbalance aerobiotic biochemical pool. The effects of pollution-free treatment, high efficiency, low noise and low cost can be achieved.

The invention discloses an image recognition method and device, electronic equipment and a storage medium. The image recognition method comprises the following steps: acquiring a to-be-processed image; on the basis of a pre-trained behavior recognition model, recognizing interactive behaviors in the to-be-processed image to acquire a behavior recognition result, wherein the behavior recognition model is obtained by training an initial model according to a training sample in advance, and the training sample comprises images presented by at least one interactive behavior under different visual angles; and executing a preset operation according to the behavior recognition result. Accuracy of image behavior recognition can be improved, and the interaction experience is improved.

The invention discloses a carbon dioxide composite solvent and a method for dissolving cellulose by using the same. The composite solvent comprises an organic solvent, organic alkali and a carbon dioxide absorbent, and the Henry constant of carbon dioxide in the carbon dioxide absorbent at normal temperature is less than 1.0*10<7> Pa or the solubility parameter of the carbon dioxide absorbent is less than 4.0*10<6> Pa (1 / 2). The method for dissolving cellulose comprises the steps: dissolving cellulose in a carbon dioxide composite solvent to form a solid-liquid mixture, then introducing carbon dioxide, stirring and dissolving to obtain a cellulose solution. A polar aprotic solvent with low Henry constant is used as the efficient carbon dioxide absorbent, and is combined with the organic alkali and the organic solvent of a carbon dioxide dissolving system to prepare the carbon dioxide composite solvent, so that the dissolving capacity on cellulose can be improved, and a high-concentration cellulose solution is obtained; and the consumption of carbon dioxide can be effectively reduced and the stability of the cellulose solution is improved.

The invention discloses a method for improving efficiency of leaching chalcopyrite from thiobacillus and belongs to the technical field of bioengineering. According to the method disclosed by the invention, on the basis of an improved Starkey-chalcopyrite composite culture medium, iron ions and ferrous ions are supplemented at the initial stage of culture and elemental sulfur is added at stages inthe bio-leaching process, various biochemical reactions in the leaching environment are regulated, chemical and biological factors in the bio-leaching process are enhanced, iron metabolism is promoted while sulfur metabolism is improved, and production of sulfur passivation films and iron passivation films is reduced, so that the leaching rate is improved. The method is simple and feasible in operation, and is applicable to large-scale popularization and application of similar bio-leaching processes.

An LED constant-voltage dimming power supply being electrically connected to a dimmer and configured for changing duty ratio of output voltage thereof according to a controlling signal from the dimmer, includes a constant-voltage source, a damping discharge circuit module, a phase detecting circuit module, a duty ratio controlling module, and a switcher. The damping discharge circuit module is electrically connected to an input end of the constant-voltage source. The phase detecting circuit module is electrically connected to an output end of the constant-voltage source. The duty ratio controlling module is coupled to the phase detecting circuit. The switcher is electrically connected to the duty ratio controlling module. The LED constant-voltage dimming power supply adjusts the luminance of the LED lamp and has high universality. Moreover, each of lots of LED lamps has high consistency during adjusting its luminance.

The invention provides a charging and discharging robot for a toothbrush production assembly line. The charging and discharging robot is provided with a PLC control cabinet and a working platform. Theworking platform is sequentially provided with stand column rotation air cylinders, a stand column lifting air cylinder and a stand column horizontal telescopic air cylinder. An intermittent rotationmechanism intermittently rotating by a certain acute angle is connected with the free end of the telescopic air cylinder. The intermittent rotation mechanism is provided with a polyhedral charging mold which rotates along with a rotary shaft coaxially and synchronously and is provided with a plurality of concentric charging end faces of the same structure. A replaceable material clamping templatemade from polyurethane is fixedly mounted on each charging end face of the polyhedral charging mold in a matched mode. The material clamping templates are integrally formed and provided with a plurality of clamping grooves connected with brush holders in a clamped mode. Spring material pushing balls used for pushing the brush holders away are mounted at the bottom ends of all the material clamping templates. The mold production cycle is short, the machining cost is low, realization is easy, the later operation and maintenance cost is low, the production progress of the assembly line can be accelerated on the basis that the cost is controlled, the multiple-degree-of-freedom intermittent rotary batch charging and discharging functions are achieved, the labor cost is reduced, the charging and discharging robot is more economical, convenient and practical, and the economic benefits of enterprises are increased.

The invention relates to a preparation method of a covalent organic framework film. The method comprises the following steps: putting covalent organic framework powder serving as a precursor into a hydrothermal reaction kettle containing a reaction solvent, putting a substrate into the hydrothermal reaction kettle, adding a catalyst, sealing the hydrothermal reaction kettle, heating to react, standing to room temperature after the reaction is finished, taking out the substrate, and cleaning to obtain the covalent organic framework film. Compared with the prior art, the invention provides a newmethod for preparing the covalent organic framework film; the thickness of the covalent organic framework film prepared by the application method is controllable; the efficiency is high; the universality is good; the reaction device is simple and the operation cost is low.

The invention relates to a user interface design technology, and discloses a page control method, which comprises the following steps of: acquiring a track path generated by a user on a page displayed on a screen of electronic equipment in a preset mode, and calculating longitudinal coordinate displacement absolute values of a starting point and an ending point of the track path; and controlling the page to roll according to the track path or controlling contents displayed on the page to return to the top or the bottom of the page by taking whether the longitudinal coordinate displacement absolute value and the holding time of the termination point reach preset standard values or not as trigger conditions. The invention further provides a page control device, electronic equipment and a storage medium. According to the invention, the function of quickly reaching the top or bottom page of the page can be realized.

The invention relates to a microporous ceramic catalyst carrier and a preparation method thereof. The microporous ceramic catalyst carrier comprises the following raw materials by mass: 70 to 85% of low-quality bauxitic clay, 10 to 25% of an additive and 0.5 to 1.5% of a dispersant. According to the invention, microporous ceramsite is employed, so the problem of low universality of a catalyst carrier is overcome; since the particle size of the ceramsite is small, deformability of the microporous ceramic catalyst carrier under the condition of a large quantity of the ceramsite is good, and the microporous ceramic catalyst carrier is adaptive to a variety of experiments and production and reaction positions; and cost is low.

The embodiment of the invention provides a learning path planning method and device, and relates to the field of education. The learning path planning method comprises the steps: outputting intelligent evaluation exercises; receiving exercise answers fed back by the students according to the intelligent evaluation exercises; analyzing the exercises answers to obtain mastered knowledge points, unmastered knowledge points and knowledge point mastering degrees; and planning a learning path according to the mastered knowledge points, the unmastered knowledge points and the knowledge point mastering degree to obtain a learning path. Visibly, by implementing the implementation mode, a specific learning path can be planned for each student, and the learning life of the students is facilitated, sothat the problem of relatively low universality of an existing teaching scheme is solved.

The invention relates to a halloysite nanotube drug sustained-release material and a preparation method thereof. The drug sustained-release material is prepared by the following steps: performing acid corrosion to a halloysite nanotube to obtain a dilated nanotube, loading the drug into an inner cavity of the halloysite nanotube, and coating an organosilane polymerized hydrophobic layer onto the surface of the drug-carried halloysite nanotube, wherein the during the coating of the organosilane polymerized hydrophobic layer, organosilane I is firstly used for modifying the outer surface of the halloysite nanotube, and then organosilane II is added to form the organosilane polymerized hydrophobic layer on the surface of the nanotube. Compared with the prior art, the sustained release material has universality on a hydrophobic drug and a hydrophile drug, the drug release time can be effectively prolonged, the encapsulation efficiency is high, and the administration safety of the drug can be improved.

The invention discloses a recovery and purification device for low-concentration helium. The recovery and purification device comprises a recovery fan, a membrane separator, a compressor, a heat exchanger and a vacuum temperature swing adsorption device; THE inlet of the recovery fan is connected with raw material helium, the outlet of the recovery fan is connected with the inlet of the membrane separator, the outlet of the membrane separator is connected with the inlet of the compressor, the outlet of the compressor is connected with the heat exchanger, crude helium in the compressor enters the vacuum temperature swing adsorption device through the heat exchanger and is purified to obtain pure helium, and the pure helium is discharged after being subjected to countercurrent flow heat exchange with the crude helium in the heat exchanger. The recovery and purification device for low-concentration helium has the characteristics of high purification efficiency, high purity of purified gas, low energy consumption and the like, and is suitable for small-flow application scenes. And meanwhile, the device can be used for purifying hydrogen, neon and the like, and has universality.

The invention relates to a belt buckle with long usage rate, which comprises a buckle body and a mounting member, wherein the left side surface and the right side surface of a mounting rod body are both cutting planes, the left side surface of the mounting member is provided with a through concave cavity, the left end of an upper sheet body and the left end of a lower sheet body are both integrally formed with extension sheets extending downwards, a clamping interval is arranged between the free ends of the two extension sheets, the mounting rod body is clamped into the through concave cavity through the clamping interval and is rotatably arranged in the through concave cavity. Compared with the prior art, the buckle body is detachably connected with the mounting member, so that the free combination of different buckle bodies and different mounting members is realized.

The invention discloses a method for preparing a bismuth-boron-based flexible catalytic electrode in an organic phase, which comprises the following steps of by taking a metal bismuth-boron compound as a precursor, adding a reducing agent, a complexing agent, a buffering agent and an organic solution, and mixing in proportion to prepare a plating solution, ultrasonically cleaning a substrate material in deionized water, and soaking the substrate material in deionized water, ethanol and acetone in sequence, immersing a flexible substrate material in a metal salt solution, dipping the flexible substrate material in hydroboron for 2s to complete activation of a flexible non-conductive substrate, and washing the flexible non-conductive substrate with deionized water and ethanol in sequence for later use, and immersing the pretreated substrate material into the plating solution prepared in the first step, carrying out chemical plating reaction, taking out the substrate material, and washing with ethanol to obtain the electrode material, namely the product. The preparation method is simple, the universality is better, the manufacturing cost is lower, the concentration can be changed in a larger range, the stability is good, and the requirement on the working environment is low.

The present invention relates to a method for realizing IC (integrate circuit) equipment control software-oriented GUI (graphical user interface) platformization, comprising the following steps: developing a corresponding IC equipment drive module in accordance with the characteristics of different manufacturers' IC equipment and drawing a GUI platform; connecting the monitoring host of the IC equipment to a controller through the IC equipment drive module, thereby forming a communication network; the IC equipment drive module reads data in the controller through the connection network and maps the data to the general data layer of the GUI platform; the GUI platform performs real-time display, control, and exception handling on the data through the general data layer, thus realizing GUI platformization of the IC equipment control software. The present invention realizes a cross-platform mechanism, improves the cluster monitoring ability of the wafer manufacturing equipment, is able to meet the user's demands for flexible configuration of the human-machine interface of the corresponding control system such that the whole production process can be quickly configured in a very short time, and meets the needs of advanced startup of the production.

The invention relates to the field of temperature identification and classification of pyroelectric detection, in particular to a temperature identification and classification method based on a dual-band pyroelectric device. According to the dual-band characteristic output by a dual-band pyroelectric device, the characteristic that different temperatures of a target black body can map different dual-band ratios is utilized, the dual-band ratios serve as the main characteristic of a signal, and part of characteristics of a time domain and a frequency domain are additionally added to serve as a characteristic set of the signal, so that extraction of the main characteristic of the signal is completed; and the method is combined with machine learning, so that a good temperature identification and classification effect is achieved. The method is easy to implement, can achieve a good classification effect, effectively solves the problem that an existing temperature recognition and classification method is limited by respective categories and is low in universality, can be applied to other fields, and provides a new thought for development of other fields.