40results about How to "Will not mutate" patented technology

The invention relates to a cuttage cultivation method of Dendrobium officinale. The method comprises the following steps: (1) cuttage material preparation: extracting the pseudobulb from the root of the parent plant and serving as the cuttage material; (2) cuttage material segmentation: cutting the pseudobulb into cutting shoots and allowing 2 to 3 nodes of each cutting shoot, cutting off leaves between the nodes, and soaking the cutting shoots in the potassium permanganate solution and then air-drying; (3) shoot cuttage: inserting the cutting shoots in a prepared cuttage matrix, watering and covering with a wet non-woven fabric; (4) cutting shoot management: keeping the cultivation environment semi-shady and moist, maintaining the temperature in the range from 5 DEG C to 35 DEG C and ensuring the illumination in the range from 1500 to 5000 lux; and (5) transplanting: cutting off the regenerated plant by using a pair of sterilized scissors and transplanting to a transplantation matrix. By adopting the cuttage cultivation method, the cultured plant retains the excellent quality of the parent plant and is free from mutation. The cuttage cultivation method has the advantages of foreseeable cultivation result, low cultivation risk and short cultivation period.

The invention discloses an underwater robot attitude and position control method based on double-closed-loop active disturbance rejection. The method is characterized by firstly, for a underwater robot, using a momentum and moment theorem and using a conversion relation between a geodetic coordinate system and a body coordinate system to establish a dynamical model; designing the speed loop expansion state observer of the underwater robot to observe unmodeled and external disturbances and carrying out real-time compensation suppression so that the anti-disturbance performance of a speed loop is greatly increased and the robustness of a system is improved; aiming at the high frequency vibration characteristic of the speed loop, using a disturbance observation value to construct a speed loopactive disturbance rejection controller based on nonlinear function feedback; based on a non-linear function fhan, designing the tracking differentiator of a target position signal, giving the transition process and the target speed estimation value of a position signal, avoiding the sudden change of system response and solving the conflict of rapidity and overshoot; and designing a underwater robot position loop proportion-differential controller based on position deviation feedback, wherein the controller is suitable for engineering application.

The invention discloses a method for measuring and calculating system battery electricity quantity. The method comprises the following steps that: step one, a reference voltage of a battery is obtained by using an ADC battery voltage measurement method, and preferably, 10 times of successive AD conversion is performed, an average value of conversion results is selected, such that the reference voltage can be obtained; step two, the compensation voltage of each main power consumption device is calculated according to the states of the main power consumption devices of a system; step three, the sum of the reference voltage and the compensation voltage of the main power consumption devices is calculated and is adopted as post-compensation voltage; step four, corresponding electricity quantity is obtained through a voltage-electricity quantity relationship according to the post-compensation voltage, and the corresponding electricity quantity is adopted as measured electricity quantity; and step five, currently displayed electricity quantity of the battery is updated with the measured electricity quantity of the battery. With the method for measuring and calculating the system battery electricity quantity of the invention adopted, under the premise that current information is unavailable, a method in which ADC voltage is adopted to measure the electricity quantity of the battery is only utilized, and the method and algorithms are improved, and therefore, measurement accuracy is greatly increased, and the charge and discharge curves of the battery are more approximate to authentic situations.

The invention relates to a recombinant HBV (Hepatitis B Virus) vector for expressing specific HBVshRNA (Hepatitis B Virus Short Hairpin Ribonucleic Acid) as well as a construction method and application of the vector. The recombinant HBV vector is formed by deleting 2111st-2643rd bases, 187th-680th bases or 1060th-1500th bases from an LJ196 vector, and replacing shRNA transcription structure units of the deleted sequences at the deleted sequence deleting positions. The preparation method is simple; RCDNA (Relaxed Circular Deoxyribonucleic Acid) can be efficiently synthesized using Core protein and Pol protein of wild-type hepatitis B virus genome by adopting the recombinant HBV vector, and the synthesis efficiency is higher than that of the wild-type hepatitis B virus genome DNA, the RCDNA synthesis can compete with the duplication of the wild-type hepatitis B virus, simultaneously, the shRNA can be efficiently expressed by utilizing the characteristics of high synthesis efficiency of the recombinant HBV vector, and then the DNA duplication and HBsAg synthesis of the hepatitis B virus can be disturbed. The vector can be applied to preparation a medicine for disturbing the DNA duplication of the hepatitis B virus genome, and a new idea for treating the chronic hepatitis B virus infection is provided.

The invention discloses a drawer type boxed article distributing device. The device comprises an article storage channel, an article inlet and an article outlet, wherein a bottom plate is arranged in the article storage channel; two sides of the bottom plate are connected with a first partition board and a second partition board; the first partition board and the second partition board extend upwards at the front end of the article storage channel close to the article outlet and are connected with a device for preventing articles from being gathered; and a lower baffle plate for preventing the articles from sliding downwards and a cam for uplifting one end of a first box of articles first are arranged at the article outlet. The drawer type boxed article distributing device has the advantages of simple structure and convenience for operation; and by the drawer type boxed article distributing device, boxed articles can be smoothly taken out of warehouses through the outlet, and the working efficiency is improved. Preferably, a first guide plate and a second guide plate are arranged on the drawer type boxed article distributing device, so that the boxed articles are prevented from being uplifted or sliding towards side wings when sliding in the article storage channel, and can be stacked neatly and taken out of the warehouses uniformly.

The invention provides a household soybean milk machine with the temperature control milk discharge function, and relates to a food processing machine, in particular to a household soybean milk machine. An inner smashing cup is arranged in a cup body of the soybean milk machine. A cover body which can be automatically opened at a preset temperature is arranged on the inner smashing cup. Materials are smashed in the inner smashing cup and mixed with water in the inner smashing cup to form mash or paste or thick milk. Due to the fact that the cover body which can be automatically opened at the preset temperature is arranged on a milk outlet of the inner smashing cup, the mash or the paste or the thick milk can be automatically discharged and mixed with water in the cup body to form soybean milk, the concentration of the soybean milk can be adjusted, the automatic degree is high, and customers can conveniently use the soybean milk machine.

The invention relates to a traditional Chinese medicine compound preparation, and discloses an immunity-enhancing capsule. The capsule is prepared from the following components in parts by weight: 230-260 parts of grape skin extract, 15-30 parts of vitamin C, 50-70 parts of magnesium stearate and 50-70 parts of mannitol. The immunity enhancing capsule has the advantages of good immunity regulating effect, no toxic or side effect and high safety. Resveratrol which is contained in grape skin and is richer than that in grape pulp and grape seeds is a polyhydroxyphenol compound, is capable of preventing cardiovascular and cerebrovascular diseases, and has an extremely strong cancer resistance. The invention further discloses a method for preparing the immunity-enhancing capsule. The preparation method is easy to operate, is environmentally friendly, economic, effective and non-toxic, and has a wide application prospect.

The invention discloses a multi-scale component model finite element mesh generation method and device and a storage medium. The method comprises the steps that a multi-scale component model data file is acquired; establishing a circular traversal list for the multi-scale component model data file; circularly traversing the circular traversing list; acquiring circular traversal data; setting characteristic grid parameters according to the circular traversal data; and performing grid division on the multi-scale component model according to the characteristic grid parameters. According to the method, automatic generation of geometric region grids of different magnitudes can be rapidly carried out on a complex multi-scale component model, the grids of different scales are sequentially and uniformly connected in a transition mode according to the geometric index control function, and compared with a traditional self-adaptive grid drawing method, the number of the overall model grids can be reduced, the design period is greatly shortened, and the design efficiency is improved. The product design efficiency is improved; the method can be suitable for a complex model with different scales, grids between different scales are in uniform transition, it is guaranteed that the grids between the scales cannot be suddenly changed, and the quality of the grids is good.

The invention provides an exposure ratio automatic adjustment method and device. The exposure ratio automatic adjustment method comprises the steps: acquiring multiple frames of images, wherein a first image and a second image are selected from the multiple frames of images, and the exposure time length of the first image is larger than that of the second image; obtaining first brightness of the first image and third brightness of the second image; judging whether the actual exposure ratio is adjusted or not according to the first brightness and the third brightness; and if so, adjusting the actual exposure ratio according to a preset adjustment value. Therefore, the actual exposure ratio can be automatically adjusted according to the dynamic range of the actual scene and the illuminationcondition, and the adjustment is performed according to the preset adjustment value, so that the picture can be prevented from abrupt change.

The invention provides a scanning circuit, an organic light-emitting display device and a driving method of organic light-emitting display device. The scanning circuit comprises a first driving circuit, a second driving circuit, an output unit and an isolating transistor, wherein the first driving circuit is used for generating a first-stage voltage according to signals of a first input end, a second input end, a third input end and a first power supply; the second driving circuit is used for generating a second-stage voltage according to the first-stage voltage and signals of a second input end and a second power supply; the output unit is used for generating an output signal according to the first-stage voltage, the second-stage voltage, the first power supply and a signal of a third input end; and the isolating transistor is connected between the first power supply and the output unit. According to the scanning circuit, the problems that the power consumption of the organic light-emitting display device is increased due to a relatively large leak current between the first power supply and the output signal is overcome.

The invention discloses a method for raising seedlings by grafting Lithocarpus pachylepis nuts. According to the method, the fine characters of female parents of fruit trees are maintained, and buds or branches of a fine breed of the Lithocarpus pachylepis are grafted on a rootstock having affinity, so that grown plants of scions can keep the fine characters of the female parents, and the plants grow and fruit uniformly. The genetic characters of the fine clone breed of the Lithocarpus pachylepis are stable, and the variation of the Lithocarpus pachylepis does not occur, so that the fine characters of the female parents can be maintained; the high yield in the early stage is achieved; as the scions used for grafting of Lithocarpus pachylepis seedlings are all the branches and buds adoptedfrom preferential adult trees and grafted on the rootstock, survival branches have the development characteristics of the adult trees, so that the breeding cycle can be shortened, the full productiveage of the adult trees can come in advance, and the early harvest effect can be achieved for Lithocarpus pachylepis fruits; the shape of the trees is changed, the Lithocarpus pachylepis fruits are arbor seeds, and the trees are enabled to grow shortly, small and compactly by dwarfing the plants, so that the utilization rate of land is improved.

The invention discloses a rapid culture propagation method of a locus root toxin-free seedling, comprising: taking the stem tip of lotus root as an explant, peeling off an outer sheath of the stem tip, inoculating in an MS or B5 medium in which 6- benzylamino adenine or ZRs and naphthylacetic acid are added; after culturing for 60 to 80 days, taking a part, with a node, of a test tube seedling forsubculture; rapid subculture propagation: transferring the test tube seedling to an MS or B5 medium in which 6- benzylamino adenine, naphthylacetic acid and sugar are added, so that a lot of test tube seedlings can be formed after 30-60 d; rooting culture: transferring the test tube seedlings to an MS or B5 medium in which 6- benzylamino adenine, naphthylacetic acid and sugar are added, so thata lot of roots can be formed after 20-50 d, and the transplanting field survival rate of the culture seedlings reaches 80% or above.The method uses the lotus root stem tip as the xplant to establisha lotus root detoxification rapid propagation system with a propagation coefficient of 8-20, which can obtain a large number of virus-free seedlings without variation, the virus-free seedlings have the transplanting survival rate of 80% or above.and strong growth potential, the quantity of seeds used can be greatly reduced, and the seedling transportation is facilitated, thereby solving the problems in the prior art.

According to the construction method for stabilizing the inclined bridge pier without interrupting traffic operation, the inclined bridge pier is limited by arranging the stabilizing cable anchor, the winch anchor, the horizontal stabilizing cable and the pier body stabilizing cable, the steel pipe lattice pier is constructed around the inclined bridge pier, loads on the upper portion of the inclined bridge pier are arranged on the steel pipe lattice pier, and therefore the inclined bridge pier is stabilized. And then newly building a bridge pier column, and finally removing the steel pipe lattice pier to finish the whole construction process. According to the method for repairing the inclined bridge pier, the social influence is small, normal traffic can be rapidly recovered under the condition that the quality and quantity are guaranteed to repair the bridge, inconvenience caused by traffic interruption is avoided, the social influence is reduced as much as possible, the social benefit is greatly improved, and the good economic benefit is obtained; particularly, the'pier stabilizing mode 'in the construction process is the first case of the whole country, and the blank of the bridge reinforcing technology is filled.