95results about How to "High economical and practical" patented technology

The invention provides a method for preparing a polyimide nano-film. The method comprises the steps: firstly, synthesizing polyimide resin from aromatic tetracid dihydride, aromatic diamine and aromatic diisocyanate; and then, mixing the polyimide resin, a polar organic solvent, a diluent, a film forming agent and a molecular weight regulator so as to obtain a polyimide solution system, then, carrying out nano-scale uniform spreading on a clean substrate by dint of the action of a mechanical external force of 0.5N to 30N, and then, carrying out an imidization method, thereby preparing the polyimide nano-film. According to the film, the high-temperature resistance is 10 seconds at the high temperature of 400 DEG C to 750 DEG C, and the electrical insulation property is that the dielectric constant is 1.5 to 4.5 at the frequency of 103Hz. Compared with the prior art, the polyimide nano-film prepared by the method has the advantages of excellent surface physical properties and stable chemical properties, high-temperature resistance, electrical insulation properties and chemical corrosion resistance.

The invention discloses a time-sharing multi-user multi-angle holographic stereo display implementation mobile terminal and method. The mobile terminal comprises a tracking and positioning device used for acquiring the position information of at least two observers, an angle regulating circuit used for using the position information of each observer to calculate to obtain corresponding ray casting angle and left-right eye viewpoint stereo images, and a holographic stereo display screen used for regulating the light emitting angles of the holographic stereo display scree in a time-sharing mode to enable the rays emitted from the holographic stereo display scree to cast corresponding to the ray casting angle of each position information, and moreover, the cast rays are corresponding to the left-right eye viewpoint stereo images of the corresponding position information. Compared with an existing naked eye type stereo technology which needs an observer to fix at one or more positions and angles to feel the obvious stereo effect, the time-sharing multi-user multi-angle holographic stereo display implementation mobile terminal and method perform holographic stereo display after confirming the positions of observers, the multi-user free-view angle holographic stereo display on the portable mobile terminal is realized, and the user experience is improved.

The invention provides network element equipment and a method for protection switching of a backbone optical path. The method comprises the following steps of: creating a protection group for the network element equipment, wherein the protection group comprises a passive optical network (PON) protection port and a plurality of PON working ports; and when the protection switching is performed, switching switched optical paths of the PON working ports in the protection group to the PON protection port and the optical path corresponding to the PON protection port. By adoption of the technical scheme of the invention, the redundant protection of 1:N can be provided for the optical paths, so that operating cost is saved greatly.

The invention discloses a clamp for a display vibration test and an installation method for the same. The clamp comprises a baseplate which is firmly installed on the surface of a vibration test table, a supporting frame disposed on one side of the base plate, a slide rail assembly disposed on left and right sides of the supporting frame and connected between the supporting frame and the baseplate, as well as an installation panel, wherein the slide rail assembly comprises a fixation base, a first slide rail and a second slide rail, and both the first slide rail and the second slide rails are equipped with arc slideways; and the bottom of the installation panel is in a hinged connection with the joint between the supporting frame and the baseplate, and the installation panel can move along the slideways and is used for firm installation of a display. Bolts penetrate the fixation base and the slideways and are screwed into studs on inner sides of left and right edges of the installation panel; the installation panel is rotated along the slideways with a rotary fixation hole of the fixation base as the axis till the angle of the installation panel is equal to a display truck loading angle; the baseplate is installed on the surface of the vibration test table by fastening bolts; and finally a test can be implemented. The clamp and the method disclosed by the invention can solve the technical problems that an existing vibration clamp with an overall frame structure has low flexibility, low universality, the high cost and long testing duration.

The invention discloses a mobile terminal and a method for holographic three-dimensional display self-adaptive to free views of multiple users. The terminal comprises a tracking and positioning device, an angular adjustment circuit and a multi-area holographic three-dimensional display screen, wherein the tracking and positioning device is used for obtaining position information of at least two observers and a number of observers; the angular adjustment circuit is used for computing a ray casting angle and three-dimensional pictures of viewpoints of a left eye and a right eye which are corresponding to the position information of each observer; the multi-area holographic three-dimensional display screen is provided with a plurality of user-defined pixels, and each user-defined pixel comprises sub display areas which have the same number as the observers, and is used for adjusting the ray casting angle of each sub display area, so that each user-defined pixel is provided with the corresponding sub display area for each observer, and ray emitted by the corresponding sub display area is corresponding to the ray casting angle of the corresponding position information to project the corresponding three-dimensional pictures of the viewpoints of the left eye and the right eye. According to the mobile and the method, the positions and the number of the observers are firstly determine, and then the holographic three-dimensional display is carried out, so that the holographic three-dimensional display self-adaptive to the free views on the holographic three-dimensional display terminal is implemented, and the user experience is improved.

The invention discloses a reproductive department auxiliary treatment device, in particular to the field of medical instruments. The device comprises a bed body and a treatment mechanism, the treatment mechanism movably sleeves the outside of the bed body, the treatment mechanism comprises an annular casing, a through groove cooperating with the bed body is formed in the middle of the annular casing, the annular casing is internally provided with a hot steam conveying passage and a cold steam recovery passage, a fumigation plate is fixed on the inner side of the top of the annular casing, a steam inlet gap and a steam exhaust gap are internally formed in the fumigation plate, a body placement groove is formed in the inner side of the fumigation plate, and the front and rear ends of the body placement groove are provided with sealing assemblies. The device utilizes the arrangement of the sealing assemblies, and achieves the sealing of the body placement groove when a patient is subjected to the fumigation treatment, a sealing curtain is made of a rubber material, and can fit a human body after being in contact with the human body, the sealing of the fumigation environment is ensured, the therapeutic effect is good, fumigated medicine liquid vapors are prevented from escaping, and odors affecting the indoor environment are avoided.

The invention relates to the preparation of a water-absorbing resin complex material, in particular to the preparation of a novel water-absorbing material with complex functions which is obtained from the compound of water-absorbing resin and an MCM-41 molecular sieve. The method comprises the following steps: the MCM-41 molecular sieve is subjected to organic processing; an acrylic acid is taken as a raw material; the pH value is regulated by NaOH till 60 percent to 80 percent of neutralization degree; then deionized water is added for dilution, and then put into a high-pressure reaction kettle; acrylamide, a cross-linking agent, an initiator and the MCM-41 molecular sieve are added in sequence for carrying out polymerization under the protection of nitrogen; and a product is dried so as to obtain the complex material of the water-absorbing resin and the MCM-41 molecular sieve. The complex material of the water-absorbing resin and the MCM-41 molecular sieve have good absorption capacity to water containing organic pollutants, and can realize the effect of concentration of pollutants; and furthermore, the regular structure of the molecular sieve causes the reuse times of the water-absorbing resin to be greatly improved, compared with the reuse times before compound, thereby reducing manufacturing cost of water processing, i.e., greatly improving the economic practicability of the application of the water-absorbing resin in water processing.

The invention belongs to the field of sand land soil treatment, and relates to a sand land soil reconstruction method. The sand soil reconstruction method includes: stripping a surface layer of a sand land, and flattening a surface of the stripped land without surface soil; laying powdered coal ash to the surface of the treated land of the step 1, and evenly spraying the treated land with less water; fully mixing the powdered coal ash and sand through mechanical rotary tillage, and acquiring a mixture layer of the powdered coal ash and the sand; rolling the mixture layer of the step 3, and acquiring a water and fertilizer retaining layer; and covering the water and fertilizer retaining layer of the step 4 with the stripped surface soil of the sand land. The problem that the water and fertilizer retaining ability of the sand land is poor and the powered coal ash occupies lands can be solved; the powdered coal ash and the sand soil are mixed and rolled to form the artificial water and fertilizer retaining layer, which can ensure the ventilation of the soil and has certain water and fertilizer retaining ability; and the yield of crops in the reconstructed sand land is close to or identical to the yield of the crops in general lands.

The invention discloses a series arc fault positioning device and method under the condition of parallel connection of multiple photovoltaic branches, and the method comprises the steps: constructing a unified mathematical model of the output characteristics of a photovoltaic group string, substituting a current sampling value of each photovoltaic branch into a mathematical expression, and calculating the output total voltage of all assemblies in the photovoltaic branch; subtracting the total output voltage of components in each branch from the direct current side input voltage of an inverter to obtain a voltage difference value, and further calculating a power value and an energy value which reflect the intensity of the series arc of each branch according to the voltage difference value and the current value of each branch; when the power value is larger than a set threshold, judging whether an arc event occurs in the photovoltaic system according to the parallel loop common-mode current, further judging the grade and positioning of an arc fault according to the magnitude of the energy value, and sending a grading alarm signal to a photovoltaic power station monitoring system to ensure safe and stable operation of the photovoltaic system.

The invention provides a bactericidal composition containing active components of bellkute and thiabendazole and relates to a bactericidal composition having a synergistic effect. The bactericidal composition is applied to the field of chemical protection of agricultural plants and shows extremely high antibacterial and bactericidal activity to harmful fungi in agriculture or gardening. In the bactericidal composition containing active components of bellkute and thiabendazole, the weight ratio of bellkute to thiabendazole is 1:20-20:1. The bellkute and thiabendazole account for 6 to 90 percent of the weight of the bactericidal composition. The bellkute and thiabendazole can be compounded with known auxiliary agents and excipients to form any allowable pesticide formulation, and the formulation may be wettable powder, water dispersible granules, a suspending agent, paste and missible oil. The bactericidal composition is used for controlling the bacteria of cereals, fruits, vegetables and economic crops.

The invention discloses a safety protection device for a mine and a using method, and belongs to the technical field of protection devices. The safety protection device for the mine comprises a box body, a fixing plate, a transmission assembly, a motor, a filter plate and an impeller; the fixing plate is fixedly connected in the box body; the transmission assembly is connected to the fixing plate; the motor is fixedly connected in the box body and is used for driving the transmission assembly to rotate; the filter plate is fixedly connected to one side, close to an air inlet, of the box body; the impeller is rotationally connected to the filter plate. Through the arrangement of the impeller, a water tank, a water spraying mechanism and an air outlet cover, ventilation and dust falling can be carried out in the mine, the air quality in the mine is improved, through the arrangement of a dust removal mechanism, slag dust attached to the filter plate can be scraped away, the slag dust is prevented from blocking ventilation holes of the filter plate, and through the arrangement of the transmission assembly, the safety protection device can work only through one driving source, and the production cost and the later maintenance cost are reduced.

A series of 28 composite medicines composed of two or more Western medicines is disclosed, which can be used to develop various medicines for treating hypertension with low cost. Its new preparing process and packing technique are also disclosed.

The invention discloses a water source heat pump device for making hot water within non-heating full-load time. On the structural basis of an existing water source heat pump heat recovery unit mainly composed of a compressor (1), a heat recoverer (2), a water-cooling condenser (3), a drying filter (5), a water-cooling evaporator (6), a thermostatic expansion valve (7), a high-pressure and low-pressure controller (8) and a high-pressure and low-pressure gauge (9), a temperature sensor (13) is installed at a water inlet of the water-cooling condenser, an air conditioner water circulating pump (12) is installed at the portion, in front of the water inlet of the water-cooling condenser, of an air conditioner water return pipeline, and a hot water circulating pump (11) is installed at the portion, in front of a water inlet of the heat recoverer, of a hot water return pipeline. Detected air conditioner water return temperature signals are fed back to a main controller (10) through the temperature sensor (13) so that the hot water circulating pump can be controlled to be started and stopped, and therefore the unit can accurately make hot water through residual heat released within the non-heating full-load time, and heating and hot water supplying are achieved at the same time. The aims of saving running expenses and improving the economy and practicability of the device are achieved.

The invention discloses a mobile terminal for 3D image acquisition and 3D printing and a method. The terminal comprises a 3D imaging module used for obtaining 3D image of left and right format; a 3D image processing module used for changing the 3D image of left and right format into the section layer required by the 3D printer; and a printing output module connected with the 3D printer and outputting the command for 3D printing the section layer. Compared with the expensive 3D scanner with complex structure and computer complex software modeling technology, the mobile terminal for 3D image acquisition and 3D printing and the method are fast and portable and the economy practicability of the mobile terminal and the 3D printing technology is increased.

The invention provides a laser marking shading enhanced PBT composition. The composition comprises the following components in parts by weight: 50-80 parts of PBT resin; 6-20 parts of an opacifying agent; 15-30 parts of glass fiber; 0.1-0.5 part of antioxidant; and carbon black accounting for 0.0033%-0.033% of the weight of the opacifying agent. Under the condition that no expensive laser markingagent is used and only the opacifying agent and the trace carbon black are compounded, the composition has the following properties that: a shading effect of which the whiteness value is larger than 90 and of which the thickness is smaller than 3 mm is achieved; and the color difference value before and after laser marking is larger than 15; and therefore, composition can be applied to the field of preparation of lamp cup shells, capacitors, connectors or relay products in the lighting industry.

The invention relates to the technical field of concrete, in particular to high-strength and high-impermeability multilayer graphene oxide concrete and a preparation method thereof. The large-sheet-diameter and multi-layer graphene oxide is adopted, so that the large-sheet-diameter and multi-layer graphene oxide plays a bridging role in the concrete, internal pores can be filled, microcracks can be connected, formation of cement hydration crystals is accelerated, and the microstructure in the concrete is improved. Tests prove that the mechanical property and the impermeability of the multilayer graphene oxide concrete are greatly improved, compared with common concrete, the compressive strength and the breaking strength of the multilayer graphene oxide concrete are improved by 17% and 32%respectively in 28 days, the impermeability is improved by 44.8%, the performance is remarkably improved, and the limitation of traditional concrete is improved. The multilayer graphene oxide used inthe invention is multilayer and large in sheet diameter, so that the preparation is simpler and more economical than other nano materials, the economic practicability is greatly improved, and the costis reduced.

The invention provides a marble ceramic tile fabrication film pasting process. The marble ceramic tile fabrication film pasting process is mainly finished in a coordinating manner through marble ceramic tile fabrication automatic film pasting equipment, the marble ceramic tile fabrication automatic film pasting equipment comprises an executing mechanism, a cutting mechanism and a conveying mechanism, wherein the executing mechanism is installed on the conveying mechanism in a sliding fit manner, the position located at right ahead of the executing mechanism is provided with the cutting mechanism, and the cutting mechanism is installed on the conveying mechanism. By means of the marble ceramic tile fabrication film pasting process, the problems that current ceramic tile blanks need to be transferred to the next step operation after being molded, ceramic tile surfaces are prone to sticking some impurities in the ceramic tile transfer process, furthermore, stacked ceramic tiles tend to squeeze and rub against each other in the transportation process, and ceramic tile surface wearing and breaking are caused to affect the ceramic tile quality can be solved.

The invention belongs to the technical field of power supply management, and relates to a power-off and reset circuit and an intelligent central controller. The connection state between a power supplyand a main control circuit is controlled through a first switching circuit; a charging and discharging circuit receives the control signal and the power supply signal provided by the main control circuit, and performs charging and discharging according to the control signal and the power supply signal to generate a switch control signal; and a second switching circuit controls the on-off state ofthe first switching circuit according to the switch control signal; therefore, the main control circuit is not powered off during resetting, power is thoroughly cut off without resetting during powerfailure, the power failure function and the resetting function of the main control circuit do not interfere with each other, and the performance is reliable; power is thoroughly off in the power-offprocess, so that the electric energy loss is reduced, the standby time is prolonged, an expensive integrated chip or controller is prevented from being adopted to realize reset and power-off control,the economic practicability of the power-off and reset circuit is improved, and the waterproof performance of a product is enhanced.

The invention provides areal-time monitoring and multi-dimensional analysis system for noise of a transformer substation. The system comprises a modeling module, a data module, a calculation module and a display module, and is characterized in that the modeling module is connected with the calculation module, the calculation module is connected with the display module, and the data module is connected with the modeling module, the calculation module and the display module. The calculation module is used for calculating the noise distribution of the transformer substation, dynamically obtaining the monitoring data of the detection point according to the scene type, carrying out reverse calculation, and obtaining the sound source data of a sound source associated with the detection point, and the sound source data comprises the background noise of the detection point and the sound power level data of the sound source; and full-scene noise distribution calculation analysis is carried out by using the sound source data and the scene information. A transformer substation noise distribution model is accurately calculated and constructed, so that the accuracy of multi-point prediction, linear analysis, plane analysis and spatial analysis of the transformer substation noise is greatly improved; and meanwhile, identification analysis of background noise and emission noise is provided, and the influence degree of the emission noise of the transformer substation on the environment is accurately judged.

The invention provides metal pipeline straight insertion connecting assembly forming and processing equipment which comprises a transfer mechanism, an up-pressing mechanism and supporting mechanisms.The supporting mechanisms are uniformly arranged above the transfer mechanism, the up-pressing mechanism is mounted on the transfer mechanism, and the supporting mechanisms are located right below theup-pressing mechanism. The metal pipeline straight insertion connecting assembly forming and processing equipment can overcome the defects of existing pipeline connection as follows: pipelines whichare connected are easy to slide, the gaps are attached incompletely, and safety accidents of leakage in equipment for conveying petroleum, natural gas and the like happen easily.