32 results about "Age structure" patented technology

The embodiment of the present invention discloses a method for predicting China's future population. The method includes: population mortality model, basic data correction module, total fertility rate module, international population net migration module, calculation module, error analysis module, comprehensive two Child policy or not comparison module. The method of the present invention has fast execution speed, predicts the future population and age structure of China by the Leslie matrix, and compares the number of deaths calculated with the website of the National Bureau of Statistics of China. In 2001-2015, the maximum error is 3.31%, and the average error is 1.81%, which is lower than The 7.23 percent and 3.8 percent published on the U.S. Census Bureau website.

The invention relates to a molecule marking method for a red peel gene of weed rice and belongs to the field of molecular genetics. A rice type of 02428(white peel) is utilized to be hybridized with Yangzhong weed rice (red peel) to confirm that the red peel gene of the Yangzhong weed rice is a dominance single gene which is decided by a maternal gene; a reciprocal cross result shows to have no cytoplasm effects. An InDel marker RID14 is designed according to the gene structure of the red peel gene Rc of the cloned common wild rice; the InDel marker is co-separated with the red peel gene of the weed rice. The marker can be utilized to accurately and effectively identify the red weed rice and the derived line thereof from the cultivated rice and can provide a molecule basis for the identifying of the weed rice.

The invention relates to a high-quality Steiner minimum tree construction method with differential evolution under an X structure. Based on the minimum spanning tree and the differential evolution algorithm, population is initialized through a minimum spanning tree generation method. The population is solved through the improved differential evolution algorithm. On the basis of a greedy selectionstrategy, an optimal solution of the current population can be reserved for each iteration to enter the next generation to continue to carry out iteration optimization operation. According to the method, the line length of the wiring tree can be effectively optimized, and a high-quality Steiner minimum tree construction method with differential evolution under an X structure is realized.

The invention discloses a chimonobambusa high-yield cultivation method. The method includes the steps that forests for chimonobambusa shoots are mixed with deciduous broad-leaved trees, fertilization is conducted on the forests for the chimonobambusa shoots, and the age structure and density of vertical chimonobambusa are adjusted. According to the chimonobambusa high-yield cultivation method, the yield of the chimonobambusa shoots can be improved, and the current situations that the forest land environment deteriorates, the chimonobambusa is short, small and thin and the yield is low due to intensive shoot collecting can be reduced.

The invention belongs to the technical field of aquaculture and particularly relates to a rice-fish culture method for protecting a terrace with fish and a terrace structure. According to the method,the terrace is protected by the fish, so that the problem that a Hani terrace is fallow in winter is solved; the absorption and metabolism of various substances of a water and soil system of the terrace can be quickened through introduction of carps, therefore, the contents of nitrogen and phosphorus of the terrace after aquaculture are improved, and the soil is more fertile. The terrace structuremainly comprises a parent culture pond, a seedling culture pond, a circulating purification pond and a winter fallow field, wherein each of the parent culture pond, the seedling culture pond and thewinter fallow field is provided with a pipeline, through which mountain spring water flows; each of the parent culture pond and the seedling culture pond is provided with a pipeline communicated withthe circulating purification pond; a pipeline is communicated with the circulating purification pond and the winter fallow field. An aquaculture method comprises the following steps: introducing high-quality parents; building the parent culture pond for culturing the high-quality parents; building the seedling culture pond for culturing high-quality seedlings; transforming the winter fallow field,storing water for nourishing the field and introducing the high-quality seedlings for culture; and managing aquaculture.

The invention relates to a paste beating and stirring machine capable of replacing manual paste beating and stirring and belongs to the field of food processing. The discharge port of a hopper is communicated with the feed inlet of a primary aging device; the discharge port of the primary aging device is communicated with the feed inlet of a secondary aging device; the discharge port of the secondary aging device is communicated with the feed inlet of an extruder; a variable-pitch screw shaft is inserted through the hopper; a conveying screw, a stirring screw and an extruding screw which are arranged on the variable-pitch screw shaft are positioned the inner pipe cavities of the primary aging device, the secondary aging device and the extruder respectively; and the upper end of the variable-pitch screw shaft is driven by a powder drive mechanism. The machine has the advantages of being the first paste beating and stirring machine, having an aging structure integrating conveying, stirring and extruding, realizing closed and integrated processing of raw corn paste or other raw paste from the feed inlet to an aging port, improving processing efficiency and being clean and sanitary.

The invention relates to a facial expression BN recognition method based on a small data set. Firstly, the geometrical features and HOG features of facial expression images are extracted, a tag sampleset of an action unit (AU) is for by processing such as feature fusion and normalization, Secondly, the BN structure of facial expression recognition is constructed, and the experience of qualitativeexperts is transformed into the constraint set between the conditional probabilities of BN. Then, the objective function is introduced to solve the maximal form of the objective function by convex optimization, and the parameters of BN model are estimated. Finally, the facial expression is recognized by the joint tree inference algorithm. Compared with the prior art, the facial expression recognition method provided by the invention can greatly improve the accuracy of facial expression recognition under the condition of small-scale data set, and can be widely applied to the fields of human-computer interaction, security system, medical health diagnosis, video communication, driver identification and fatigue driving, etc.

The invention relates to a determination method for the fracture toughness of an actual cracked structure. The method includes: firstly determining an association line of the fracture toughness JC of the material used in the structure and a unified constraint parameter AP, then determining an association line of J integral in a cracked structure under actual working conditions and the unified constraint parameter AP, and finally drawing the two determined straight lines in one coordinate system, taking the intersection point as a structural failure point, and multiplying the vertical coordinate of the intersection point by a reference fracture toughness value to obtain a value as the actual structure's fracture toughness. The method provided by the invention realizes determination of the fracture toughness of the actual cracked structure by means of a finite element model, has the characteristics of low cost, simplicity and reliability, is convenient for use in engineering practice, and provides basis for accurate structural integrity assessment.

The invention provides a novel anti-aging and life-prolonging health care technology, which aims to realize organ function improvement, aging delay and life increase. The technology is realized through long-term multi-time transplantation of plants and proteins induced pluripotent stem cell (PPiHPS) to supplement seed cells required by growth, regeneration and restoration of body tissues and organs of individual life, and regeneratively restore ageing structures and functions of each part of individual life.

A method for cultivating large-diameter bamboo includes such steps as choosing a woodland with the altitude of 300-800m and the slope of less than 25-40 degrees; adjusting the tree species composition; adjusting the stand density to maintain the mother bamboo density at 300-500 plants / 667m2; adjusting the average DBH(diameter at breast height), so that the mother bamboo average DBH selection rangeis 12-14cm; adjusting the age structure, wherein the proportion of the sum of II degree bamboo and III degree bamboo relative to the total amount is larger than the proportion of the sum of I degreebamboo, IV degree bamboo and V degree bamboo relative to the total amount. splitting a mountain; improvement of stand condition; applying fertilizers, wherein the fertilizer is applied to new bamboosby injection in April or May, and a compound fertilizer is applied to in the moso bamboo shoot-differiating period or one month before spring shoots emerge from soil. The mother bamboo density, the DBH and the age structure are regulated, the reclamation and fertilization method is improved, the output of large-diameter new bamboo is improved, the DBH of Moso bamboo is increased, the shooting quantity is increased, the utilization rate of bamboo timber is increased, and the woodland resources is fully utilized.

The invention discloses a nucleus structural model, and relates to the technical field of nucleuses. The nucleus structural model comprises a main structure and an auxiliary structure, wherein the main structure adopts a 1-3-axis 1-7-layer gyro structure, sequentially comprising a helium axis, 8 pairs of single-stranded protons as a second layer, 8-18 pairs of protons as third, fourth, fifth and sixth layers, and supporting protons as an outmost layer; the nucleus structure model adopts a principle as follows: the second layer formed by 8 pairs of the single-stranded protons has a first determinant factor as follows: arrangement of the 8 pairs of the single-stranded protons is adapted to gyro needs and magnetic needs and the 8 pairs of the single-stranded protons are tightly arranged. The nucleus structural model helps people to understand the nature, benefits physical, chemical and mechanical researches, facilitates the development of materials, is conducive to the development of biochemical, biological, medical and pharmaceutical sciences and other related disciplines, is helpful to teaching activities, and can be a model for developing the intelligence of children.

The invention provides a flood risk map plotting system and method based on a B / S structure.The method comprises the steps that a user side retrieves environment information data from a server, and flood risk factor data is generated through logical operation and saved in the server in a key value format; the server generates a first flood risk factor map layer according to the flood risk factor data; the user side sends basic parameter information acquired in advance to the server; the basic parameter information comprises one or more of the format, the resolution ratio, the drawing range, the mapsheet, the title, the explanatory note, the legend and the layout; the server generates a first flood risk map according to the basic parameter information and the first flood risk factor map layer; the user side displays the first flood risk map on a browser according to a browsing instruction acquired in advance.According to the flood risk map plotting system and method based on the B / S structure, the problems that a flood risk map drawn through the prior art is single in format and low in resolution ratio are solved.

The invention relates to the field of heat treatment of iron and steel materials, particularly to a heat treatment method for accelerating the aging of a T / P92 heat-resistant steel. The method comprises: carrying out rapid high-temperature short-term aging accelerating on a substrate and a carbide, and ageing at a temperature of 30-40 DEG C below the AC1 point; carrying out secondary ageing at a temperature of 650 DEG C after completing the aging to ensure the rapid precipitation of the Laves phase, such that the aging structure equivalent to the actual working condition at different stages isachieved. According to the present invention, with the aging accelerating method, different degrees of the aging structures of the T / P92 heat-resistant steel can be rapidly obtained, and the aging structure in the actual working condition of the T / P92 heat-resistant steel can be accurately, reliably and equivalently simulated, such that technical problem that different degrees of the aging structures during the whole use stage cannot be obtained due to the short service time of the T / P92 heat-resistant steel so as not to perform the effective aging grade evaluation in the prior art can be solved.

The invention discloses a method for recovering and preserving a wild small population of neolitsea sericea serving as a rare plant. The method comprises the steps: selecting a neolitsea sericea community remained on a coastal mountainous region in the east of Zhejiang to survey each wood on a typical sample plot; calculating importance values and age structures of species by using a statistical sampling method and a population statistical method; creating an optimal adaptable rehabilitation environment according to the dynamic adaption characteristic of the neolitsea sericea on different landsite types and at community development stages for the environment; optimizing the age structure, space distribution, species composition and land site condition of a popularization by using technical means such as mature tree rejuvenation, young seedling transplanting and updating, interfering wood thinning for tending and forest stand management so as to remarkably promote the survival and growth of small population of the neolitsea sericea, restore the structure of the small population to the maximum extent on the premise of finitely protecting plants and meet a production demand. By usingthe method, the growth vitality and stability of the small population of the rare plant are improved; and the method has a wide application prospect in preservation and ecological rehabilitation of the small population of the rare plant.

The invention belongs to the technical field of agricultural planting, and particularly discloses a method and a device for remaining breeding of phyllostachys praecox. The method comprises the following steps: step 1, carrying out remaining breeding on new bamboos at the remote ends of mother bamboos in a young forest stage: (1) carrying out remaining breeding on 1-2 plants of robust bamboo shoots without diseases or pests of each plant of the mother bamboos for cultivating now bamboos, and (2) gradually increasing the remaining breeding quantity of the new bamboos from the second year to theforth year year by year; and step 2, carrying out remaining breeding in a forest forming stage: (3) carrying out remaining breeding on 150-200 new bamboos in each mu filed every year, keeping the number of standing bamboos to be 600-800 and maintaining uniform distribution, and (4) from the sixth year, cutting old bamboos with the age of five years or above from August to September every year, and keeping the cutting amount to be the same as the amount of the remaining breeding of new bamboos of the current year, so that the age structure of the bamboo forest is that the bamboos with the ageof one, two or three years account for 25%, the bamboos with the age of four years account for 20%, and the bamboos with the age of five years account for 5%. Through the adoption of the method, highyield and stable yield of the phyllostachys praecox can be realized.

The invention discloses a honeycomb wheel core structure in a zeolite rotating wheel, the honeycomb wheel core structure comprises a honeycomb wheel core and a plurality of pore passages formed in thehoneycomb wheel core, and the pore passages are bent pore passages. A main body of the pore passage is of a wavy structure which is bent up and down. And the wavy structure of the pore passage is provided with a plurality of waveforms. And the distance between the wave crest and the wave trough of the waveform in the vertical direction is 1-3 times of the height of the pore passage. And all the pore passages are uniformly distributed in the honeycomb wheel core. Compared with a traditional rotating wheel with the same size, the pressure loss is increased by about 5%-15%, the adsorption efficiency is improved by more than 30%, the concentration ratio is improved by more than 50% under the same adsorption efficiency, the concentration ratio can reach more than 40 times theoretically, and very obvious economic benefits and market prospects are achieved.

The invention provides a prestressed hoop type swing wall connection assembly with no damage in consideration and an implementation method of the prestressed hoop type swing wall connection assembly.The prestressed hoop type swing wall connection assembly comprises a main building structure and a swing wall arranged on the front side of the main structure, L-shaped steel holding plates are fixedto the four corners of the main building structure, prestressed tie rods are connected between every two adjacent L-shaped steel holding plates, the crutch-shaped parts of the L-shaped steel plates are buckled to the edges of the main building structure, the prestressed tie rods and the L-shaped steel holding plates of the main building structure surround the circumferential side of the main building structure, convex tooth connecting parts are fixedly connected to the side, facing towards the main building structure, of the swing wall, concave tooth connecting parts are fixed to the L-shapedsteel holding plates, and the concave tooth connecting parts and the convex tooth connecting parts are fixedly connected through penetrating pin shaft assemblies, so that connection between the swingwall and the main building structure is realized, structure design is reasonable, construction is easy and convenient, the prestressed hoop type swing wall connection assembly can be used for repairing and strengthening damaged structures after an earthquake or aging structures, and both of the earthquake-resistant effect and the reinforcement effect are good.