Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

1393results about How to "Guaranteed survival rate" patented technology

Microfluidic device and method for preparing microgel by using microfluidic device

The invention provides a microfluidic device and a method for preparing microgel by using the microfluidic device. The method comprises the steps of (1) taking a solution containing live cells or bioactive molecules, a photocuring agent and a hydrogel prepolymer as an internal phase, taking a mixed solution containing oil and an surfactant as an intermediate phase, and taking a polyvinyl alcohol aqueous solution as an external phase; (2) respectively conveying the internal phase, the intermediate phase and the external phase into a corresponding microchannel of the microfluidic device through a micro pump or a micro injector to form a monodispersed water-in-oil-in-water double emulsion; (3) enabling the monodispersed water-in-oil-in-water double emulsion in the step (2) to pass through an output channel of the microfluidic device, and collecting the monodispersed water-in-oil-in-water double emulsion in the step (2) into a collection vessel filled with an aqueous solution, thus obtaining the microgel immobilizing with the live cells or the bioactive molecules. The preparation of the microgel immobilizing with cells by a one-step method is realized, the obtained microgel is controllable in size, and narrow in size distribution, and meanwhile the survival rate of cells is maintained.
Owner:SHENZHEN HUA NOVA BIOTECH LTD

Vegetation configuration method for preventing water and soil loss of mine dump of dry-hot valley

The invention discloses a vegetation configuration method for preventing the water and soil loss of a mine dump of a dry-hot valley. The method comprises the following steps: performing topsoil stripping on the dump; building an intercepting ditch, a drainage ditch and a water collecting tank on a platform of the dump; screening vegetation types, including shrubs, herbs and liana, suitable for growing in the mine dump of the dry-hot valley; performing targeted planting; after the vegetation of the mine dump is planted, enclosing the dump by using a wire mesh or a fence to prevent a slope surface from being destroyed by domestic animals. According to the principles of soil and water conservation and restoration ecology, vegetation species are reasonably combined by aiming at that the habitat of the mine dump of the dry-hot valley is severe and different slope positions have different soil erosion intensity and water conditions, so that a reliable technical path is provided for recovering the vegetation in a mining region as quickly as possible. Moreover, the vegetation configuration method for preventing the water and soil loss of the mine dump of the dry-hot valley has the characteristics of high operability and high comprehensive benefit.
Owner:INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI

Planting method of famous and precious Chinese herb medicine dendrobium officinale

InactiveCN103004421AConducive to accumulation of emissionsAccelerate evaporationHorticultureFertilizer mixturesPlant rootsEvaporation
The invention relates to a planting method of famous and precious Chinese herb medicine dendrobium officinale, and the method is characterized in that a cultivation bed of a plantation trough with an undulated bottom is established under a certain facility environment, multiple mixed organic matrixes mainly comprising pine bark are paved, a nondestructive planting technology for stretching tissue culture seedling roots is adopted, and scientific and reasonable dendrobium officinale planting method adopting comprehensive cultivation measures such as a photo and temperature control technology, a fertilizer control technology, an insect and harmful organism nuisanceless control technology and a sustainable harvesting technology is adopted in different growth seasons and for different plants according to the biological characteristics of the dendrobium officinale; and due to the adoption of the method, the ventilation, moisture evaporation and moistening functions of a plant root environment can be enhanced, and harmful substances influencing the growth of the plant can be eliminated in time, so that the plant can grow strong, active components are highly concentrated, the resistance is enhanced, a purpose of high yield and excellent quality can be realized, the high yield and stable yield of the dendrobium officinale can be guaranteed, the product quality is excellent, sustainability for harvesting the dendrobium officinale for multiple years can be realized, and super high yield of fresh products about 600kg per Mu every year can be realized after the method is put into production.
Owner:MAOMING HUISHENGYUAN BIOLOGICAL SCI & TECH

Breeding method of loach

The invention discloses a breeding method of the loach, which can be used for improving the spawning expediting rate and the fertilization rate of the loach and the livability of the loach seedlings. The breeding method of the load comprises the steps of: a. respectively breeding the male loach and the female loach a half month before spawning expediting; b. adding a biological odinagogue into forage one week before spawning expediting, wherein the biological odinagogue specifically comprises 15-20g of Chinese angelica, ligusticum wallichii, folium artemisiae argyi, andrographis paniculata, rehmanniae vaporata and compound vitamins respectively, and the adding quantity is that 5-10g of the biological odinagogue is added into each kilogram of the forage, and continuously feeding the forage which is added with the biological odinagogue for 7 days; and c. making sets according to the proportion that the ratio of the female loach to the male loach is 1:1.5, and injecting 100-150 international units of HCG (human chorionic gonadotropin) into each loach. The breeding method has the beneficial effects that the female loach and the male loach are synchronously estrous after the breeding method is used, so that the spawning expediting rate and the fertilization rate of the loach are greatly improved. After a preferable mode of the breeding method is adopted, the cost can be reduced when the seedlings are bred, and the bait with an enough quantity can be timely provided, so that the livability of the loach seedling is guaranteed, and the large-scale production is realized.
Owner:SICHUAN YINGJIE SCI & TECH DEV

Method and device for culturing rice field eel

The invention relates to a method for cultivating swamp eels and a device thereof and pertains to the technical field of agricultural cultivation, which is used for solving the problem of industrial high-density cultivation of the swamp eels under the unnatural conditions. The technical proposal thereof is that a three-dimensional multilayer small-area controllable water level combined-typed cultivating pool is arranged at the heliophobe indoor; according to the living habits and requirements of the best growing environmental conditions of the swamp eels, water source, the conditions of water quality, breeding density and bait proportion are configured for cultivating the swamp eels. Meanwhile, the three-dimensional combined-typed cultivating pool, a filtration pool, a deposition pool, an oxygenation pool, a dosing pump, a disinfector, a thermostat, and the like, form a closed water cycle system. And the problems of water supply, filtration, deposition, disinfection, constant temperature, constant flow, oxygenation, pollution discharge, and the like, under the condition of high density cultivation are solved in the cycle. By applying the method and the device of the invention, the swamp eels can be cultivated all the time without the influences of season and climate, and the large-scaled industrial cultivation of the swamp eels which are excellent special aquatic products can be realized.
Owner:郑小非 +1

Distributed optical fiber sensing technology and system for earth-rock dam seepage line monitoring

The invention discloses a high-precision distributed optical fiber sensing and monitoring technical scheme and system. Its optical demodulator adopts high-precision pre-pulse Brillouin optical time domain analyzer PPP-BOTDA or Brillouin-Rayleigh synthesis system; its sensing optical cable adopts photoelectric composite cable with sufficient electric heating energy to ensure electric heating temperature rise The mutation signal whose amplitude is at the intersection of the optical fiber and the soaking line can be reliably identified; the signal-to-noise ratio of the system is as high as 10-20, which enables efficient and reliable observation of the soaking line and the groundwater level of the dam base. It can be used for large-scale-time-space double-coverage online telemetry of the groundwater level of the soil-rock dam soaking line and the anti-seepage curtain of the dam foundation. Its "one machine with multiple functions" has obvious advantages, and it can also measure the concentrated leakage of dams, silt in reservoirs, etc. Specific implementation methods are provided, including the layout method of the sensing optical cable for the monitoring of the soaking line and groundwater level - the wave pattern and technical details of the laying of the optical cable, which can effectively guarantee the survival rate of the optical fiber and minimize the interference to the dam construction.
Owner:SICHUAN UNIV

Method for culturing large eucalyptus seedlings

The invention discloses a method for culturing large eucalyptus seedlings. The method comprises the following technical steps: 1. selection of seedling field; 2. preparation of a plug seedling bed; 3.preparation and sterilization of matrix soil; 4. selection and treatment of ear rods and tissue culture seedlings; 5. cutting and plug transplantation of the tissue culture seedlings, wherein, the cutting seedlings are vertically inserted in the midpoint of holes at depth of 1.5-2cm; and the tissue culture seedlings are directly transplanted to the prepared plug seedling bed; 6. water and fertilizer management; 7. transplantation in vessels: the seedlings are cultured in the plugs for about 50-70 days, and terminal buds are newly extracted to 2-3cm; when the root systems of most of nursery stocks are lumped, the seedlings in the plugs are transplanted to a black polyethylene plastic nursery cup with 8*8 (cm) for culturing the large seedlings; and 8. culture of the large seedlings: the transplanted young seedlings are placed in a shading arched cover for culture, and a shading net is gradually opened for hardening the seedlings at the later period; water and fertilizer management is strengthened; and then the seedlings are removed out of a seedling nursery and planted in a mountain for afforestation in the case of seedling height up to 35-50cm and ground stems up to more than 0.25cm, fertilization is stopped 10 days before afforestation, and the nursery stocks are applied with transferring fertilizer by 0.3% of complex fertilizer once 1-2 days before outplanting.
Owner:云南省现代农林投资有限公司

Grain dryer

The invention relates to a grain dryer. An inner cavity of a drying tower of the grain dryer comprises a feeding bin and a multi-stage drying bin and tempering bin alternate arrangement structure from top to bottom, a discharging bin is arranged below a tempering bin on the lowermost layer, hollow partitioning plates are arranged inside drying bins, cavities of the hollow partitioning plates are ventilated, grain passes through the gap between every two adjacent hollow partitioning plates, through holes are formed in the faces of the hollow partitioning plates, air channels comprise hot air channels and secondary hot air channels, hot air is transmitted layer by layer between the drying bins from bottom to top through hot air conveying pipelines, and in the drying bin on each layer, the hot air passes through the through holes in the corresponding hollow partitioning plates from the corresponding hot air channels to permeate into material channels and then permeates into the corresponding secondary hot air channels to enter the drying bin on the upper layer. The grain is dried inside the drying tower in a clockwise or anticlockwise mode, heat exchange is performed between the high-temperature hot air and the grain high in water content and low in temperature, the temperature of the grain is increased rapidly to evaporate water inside, the grain enters the tempering bins to be tempered for a period of time after being dried, the water inside the grain permeates outwards, next-time drying is performed, and evaporation of the water inside the grain is completed in a gradient mode.
Owner:山东宇龙机械有限公司

Method for improving saline soil in excavated grooves of border trees in coastal region

The invention relates to a method for improving saline soil in excavated groves of border trees in a coastal region. The method comprises the following steps: 1, draining salt underground; 2, excavating the original soil in excavated groves of the border trees, airing the excavated soil aside, watering the excavated soil thoroughly, making a soil body in a freeze thawing state, repeatedly naturally freezing and thawing the soil body in winter, thawing the soil body in spring, mixing industrial wastes in the soil body, blending uniformly, and directly backfilling the blended soil serving as backfill into ditches excavated for the border trees; 3, starting border irrigation with a great amount of water, soaking the soil body, draining saline water through a concealed pipe salt drainage system, and stop salt-leaching when soil salinity in 1-meter soil body is detected to be below 0.5 averagely; 4, mixing organic wastes in surface soil in the depth of 30cm, and performing rotary tillage to mix uniformly; and 5, selecting saline-alkali tolerant plants, namely trees and shrubs and leguminous plants for improving soil, arranging three-dimensionally, and finishing according to a garden plantation standard. By various means such as engineering and physical improvement and biological treatment, the comprehensive effectiveness is obvious.
Owner:TIANJIN TEDA GREEN GRP CO LTD

Preparation method of hydrogel porous microspheres and porous scaffold material

The invention provides a preparation method of hydrogel porous microspheres. The preparation method comprises the following steps: a, a hydrogel material, a buffer solution and a photoinitiator are mixed to obtain a hydrogel solution, and an oily material is mixed with a surfactant to obtain an oily solution; b, a first container is partially nested in a second container, the inner diameter of theinlet end of the first container is larger than the inner diameter of the outlet end of the first container, and the inner diameter of the outlet end of the first container is smaller than the innerdiameter of the second container; the hydrogel solution is injected into the first container, the oily material is injected into the intersection of the first container and the second container, and the oily solution and the hydrogel solution form water-in-oil droplets under the action of a flowing shear force; c, ultraviolet irradiation is performed on the water-in-oil droplets, and crosslinkingis performed to obtain hydrogel microspheres; and d, freezing and freeze-drying are performed on the hydrogel microspheres to obtain the hydrogel porous microspheres. According to the invention, uniform and stable hydrogel porous microspheres are obtained by utilizing a micro-fluidic technology.
Owner:上海市伤骨科研究所

Method for planting ramie in middle-level heavy metal contaminated soils

ActiveCN102919040AStrong resistance to heavy metal pollutionNormal growth cycleHorticultureHigh resistanceShoot
The invention discloses a method for planting ramie in middle-level heavy metal contaminated soils. The method comprises the following steps: A, selecting a specific variety of ramie with high resistance against heavy metal contamination and cultivating strong ramie seedlings by using a young shoot cottage propagation technique; B, constructing a ramie garden and applying a passivator to reduce the activity of heavy metal in soils; C, transplanting in right time and carrying out rational close planting; D, scientifically carrying out cross dressing and cracking stems in right time; and E, preventing and controlling insect disease prevention in time and strengthening winter cultivation management of the garden. Practical results show that the yields of the newly planted ramie garden in the current year and the next year are respectively 75.1-78.4kg/mu and 88.8-91.7kg/mu which are the same as or even higher than those of the newly planted ramie garden with clean soils at the same term; moreover, the heavy metal content of raw ramie can be controlled in a range specified in related standard, and the safe and efficient agricultural utilization of middle-level heavy metal contaminated soils is realized. The method is simple and convenient in technique and easy to implement; moreover, the effect of the method is even higher if applied to the mild heavy metal contaminated soils. The method has a broad application prospect in mass areas with heavy metal contaminated soils.
Owner:INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI

Soil testing and formulated fertilization method for use in environment-friendly cultivation of cucumber

The invention discloses a soil testing and formulated fertilization method for use in environment-friendly cultivation of cucumber. The method comprises the following steps: detecting the soil of a place of origin as well as the contents of organic matters, alkali-hydrolyzable nitrogen, rapidly available phosphorus and rapidly available potassium contained in organic fertilizers; detecting target yield, reasonably selecting the utilization ratio of each nutrient in soil during seasonable production of cucumber, and selecting the utilization ratio of each nutrient in applied fertilizers during seasonable production of cucumber; determining the absorption of each known major nutrient by cucumber; selecting fertilizers according to the pH value of soil and the fertilizer needing characteristics of crops; calculating and determining the needed amounts of a main fertilizer and an auxiliary fertilizer; determining a formulated fertilization scheme; and determining a fertilization method. The calculation of the formulated fertilization amount is more accurate and more reliable than that in the prior art; by considering the types and characteristics of varieties, the target yield is more consistent with practical situations; the nutrient amount of soil is calculated accurately and reliably; the fertilizers are selected under the full consideration of the soil acidity and alkalinity as well as the requirement of cucumber on fertilizer characteristics; by adopting the fertilization method, labor force is reduced, and the production cost is lowered.
Owner:YIYANG RES INST OF VEGETABLE SCI

High earth-rockfill dam deformation monitoring fiber sensing technology and system

InactiveCN105910545AGuaranteed long-term reliability and stabilityEliminate moving partsUsing optical meansParticulatesFiber
The invnetion discloses a distributed fiber sensing system and technical scheme and provides a high earth-rockfill dam deformation monitoring fiber sensing technology and system. Integrated online remote measurement of three components of internal deformation of all particulate dam material areas (including upstream rockfills of a core-wall dam) of a core-wall earth-rockfill dam and a concrete-faced dam, panel dam perimeter joint-vertical joint deformation, panel flexibility-disengagement joints and concrete-faced bidirectional strain can be realized; large-scope time-space full coverage is realized; three uniquely molded fiber packaging structures are provided, a three-dimensional Euler elastic beam is formed, and force-light direct conversion of fibers is realized; three arrangement modes of the sensing system in a horizontal direction, a vertical direction and a dam slope direction, an integrated application method and a fiber laying technology are brought forward, integration of multiple functions of fiber monitoring is realized, construction is facilitated, the fiber survival rate is guaranteed, and an engineering application value is demonstrated. An optical demodulation instrument employs a high-precision PPP-BOTDA or Brillouin-Rayleigh synthesis system, can realize multiple purposes through one machine with other monitoring projects including seepage and the like and facilitates updating and upgrading of a safety monitoring system.
Owner:SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products