79results about How to "Suppress outbreak" patented technology

The invention discloses a method for removing water eutrophication, which comprises the following steps of: investigating a community structure of aquatic organisms in water body, and finding a missing link or broken link in a food chain according to an investigation result; stocking predacious fishes in the water body, removing small trash fishes and herbivorous fishes from the water body by adopting a medicament mode or a manual fishing mode, and regulating the community structure of the fishes in the water body; planting submerged plants, floating plants and emergent aquatic plants in the water with the depth of 0 to 1.5m; and stocking filter-feeding fishes, filter-feeding shellfishes, detritus feeding benthonic animals and herbivorous fishes in the water body. The method for removing water eutrophication can realize the removal of the water eutrophication and ecological restoration for large-scale water body of which the parameters cannot be manually controlled, effectively inhibit the outburst of algal bloom and keep the stable quality of the water body.

A nitride semiconductor laser element capable of controlling the lateral confinement of light with a good reproducibility, the nitride semiconductor element comprising an n-type cladding layer (3), an MQW light emitting layer (4) formed on the cladding layer (3), a p-type cladding layer (5) and a p-type contact layer (6) formed on the light emitting layer (4), and an ion implantation light absorbing layer (7) formed, by introducing carbon, in regions other than a current passing region (8) in the cladding layer (5) and the contact layer (6).

The present invention discloses a method for purifying water quality by utilizing submerged bed. Said method includes the following steps: (A) making zeolite bed; (B) zeolite treatment; (C) regulating depth of zeolite bed under the water surface; (D) planting submerged plant; (E) fixing zeolite bed or no fixing it; and (F) regulating zeolite bed.

The invention provides a blue alga deep well treatment device and a blue alga treatment method. The blue alga deep well treatment device comprises a deep well and a water draining device, the top of the deep well is provided with a water inlet and is inserted to the bottom of water, the water draining device is arranged at the side part of the deep well and is higher than the water bottom, the water draining device is connected with one end of a water draining tube, and the other end of the water draining tube extends to the bottom of the deep well. A hydrostatic pressure formed at the bottom of the deep water by the water guided into the deep well is used to break blue algae in order to form blue alga fragments, and a negative pressure formed by the water draining device guides the blue algae to the bottom of the deep wall and discharges the blue algae from the deep well in order to make the blue algae directly preyed by fish, zooplanktons and benthonic animals in the water, so the high-efficiency ecologic treatment of the blue algae is realized, the blooming of the blue algae is effectively prevented, and the water quality is effectively improved, thereby the blooming of the blue algae is fundamentally prevented, the blue alga pretreatment cost is reduced, and stink is prevented.

A method for preparing raw meat or raw seafood that is resistant to spoilage, comprising: a) incubating a solution comprising a population of non-pathogenic psychrotrophic lactic acid bacteria under conditions and for a period of time sufficient to enable growth of the bacterial population to form a bacterial culture capable of preventing spoilage; b) adding a saccharide to the bacterial culture and incubating the bacterial culture at a temperature of from 1 to 4° C., wherein the saccharide is present in an amount sufficient to achieve bacteriostasis of the bacterial culture; admixing the bacterial culture formed in step b) with the raw meat or raw seafood, wherein the bacteriostatic bacterial culture is present in an amount of from 1 to 20 weight % based on the total weight of the composition.

A flare-up preventing grill is an apparatus which is useful for preventing and extinguishing flare-ups which occur while grilling. The flare-up preventing grill includes a grill lid and a grill body in which food may be grilled upon a cooking grate. The flare-up preventing grill includes a heat source used for cooking foods and for boiling water contained within a water storage system. Water from the water storage system produces steam and a mist of water droplets when boiled. The flare-up preventing grill includes a baffle system which is permits or restricts the flow of the water droplets within a grill receptacle of the grill body. The grill body includes a steam regulating outlet which controls the amount of water droplets within the grill receptacle. The grill body includes a steam overflow outlet which permits water droplets to exit the grill receptacle when the baffle system is closed.

A protective suppression system including one or more sleeves of expansion coil of energy-absorbing material wrapped around a hose and a blanket which can be wrapped loosely around the wrapped hose. The longitudinal edges of the blanket fasten together to form a protective cylindrical tube, and can be joined end-to-end with one or more additional blankets to extend the protective tube to a desired total length. The system thus can provide improved safety to personnel and the environment by shielding a hose under pressure to suppress bursts, block leaks and by redirecting or channeling test fluids and cleaning fluids.

The invention relates to a composite porcine alpha-IFN gene and a recombinant vector thereof, and belongs to the technical field of genetic engineering biological products. The newly designed gene sequences of composite porcine alpha-IFN are recombined to pPICZ alpha-A vectors, and the vectors are electronically transformed into yeast competent cells; and the positive identification, and the screening and the induced expression of high copy yeast strains are carried out. A pichia pastoris expression system is used for expressing foreign genes so as to be favorable for the commercial production of porcine IFN. Compared with the natural IFN which is expressed by yeast, the expression level of the protein which is expressed by genome increases by 3.17 times. The fluorescent quantitative PCR result shows that the level of PRVmRNA after PK-15 cells treated by 10-6mg/ml of the composite porcine alpha-IFN are re-infected with PRV is obviously lower than the level of PRVmRNA after the PK-15 cells which are not treated by the composite porcine alpha-IFN are infected with the PRV, and the level of PRVmRNA decreases by 37 times.

A medicine-carrying chitosan/gelatin slow-release microparticle algistat is disclosed. Chitosan and gelatin are adopted as carrier materials to embed the phenolic acid type active allelochemical through an emulsification crosslinking reaction to prepare the slow-release microparticles. Preparation steps include adding the allelochemical into a glacial acetic acid solution containing chitosan; adding the solution into liquid paraffin containing span80; performing uniform high-temperature emulsification; then adding an aqueous gelatin solution into the emulsion mentioned above, stirring and emulsifying the mixture, cooling the mixture, and then adding dropwise glutaraldehyde for crosslinking and curing; performing centrifugation, washing, precipitation, suction filtration and then vacuum drying to obtain the slow-release microparticles. The phenolic acid type active allelochemical and the micro-nano capsule technique are combined to prepare the slow-release microparticle algistat which is small in particles size and which is not liable to expand or sink. Microcystis aeruginosa suppressing time of the allelochemical in water bodies is prolonged, and the cost is reduced. The algistat is applied in real algal inhibition field, and provides a novel technical route for application of the phenolic acid type active allelochemical in algal inhibition in natural water bodies.

The invention discloses slow release type algal inhibition granules. The slow release type algal inhibition granules are prepared by taking crop straw as a carrier and an allelochemical as an additive, crushing the straw, uniformly mixing the straw with the allelochemical and then pressing the mixture into the granules. When the slow release type algal inhibition granules are used in a water body, the slow release type algal inhibition granules can be suspended on a microorganism attachment substrate, a biological net film and a water plant through a small-size net bag. The slow release type algal inhibition granules have the advantages that an allelopathic algal inhibition principle of the plants is applied and an allelopathic effect is strengthened; the allelopathic effect strength in the water body is kept in a certain period and the burst of blue alga in the water body is inhibited; the slow release type algal inhibition granules belong to a blue algae pre-control means and can be used for effectively controlling the burst of the blue alga in the water body; compared with a present condition that the alga are killed by pesticides in a large scale after the burst of the blue alga, the method basically does not cause secondary pollution to the water body and the algal control effect is obvious.

The invention discloses a fermented Chinese herbal medicine additive for increasing yield of oyster seedlings. The fermented Chinese herbal medicine additive is prepared from the following raw materials (by weight): 6-12% of gynostemma pentaphylla, 3-5% of coptis, 4-8% of Hizikia fusiforme, 4-8% of milk thistle, 5-10% of sweet wormwood, 6-12% of magnolia cortex, 10-15% of purslane, 4-8% of dandelion, 6-15% of epimeddium, 8-15% of isatis root, 5-10% of cordate houttuynia, 5-10% of perilla leaf and 4-8% of plantago. The invention also discloses a preparation and application method of the fermented Chinese herbal medicine additive for increasing yield of oyster seedlings. The Chinese herbal medicinal raw material sources are wide, the cost is low, and the production processing technology is simple. By ultrasonic-assisted extraction and then by aerobic fermentation and anaerobic fermentation, functional components and beneficial microbial components of the Chinese herbal medicine are enhanced. The product has effects of improving water for growing oyster seedlings, effectively inhibiting outbreak of disease microbes, enhancing immunity and disease resistance of oyster seedlings and raising survival rate of seedlings. The product is an ideal, green, environment-friendly, safe and novel Chinese herbal medicine additive.

The invention discloses a formula of a microbial agent for purifying water quality. The formula contains Rhodopseudomonas palustris, lactobacillus plantarum, Saccharomyces rouxii, Nocaidia cellulans,Rhodococcus coprophilus and bacillus subtilis. The formula provided by the invention has the beneficial effects that secondary pollution is avoided; and by virtue of a synergistic effect of various thalli in a water body, the concentration of pollutants can be reduced, the content of the pollutants in water can be reduced, outbreaking of blue-green algae can be inhibited, and the purposes of purifying the water quality and thoroughly controlling water ecology can be achieved.

The invention discloses a Chinese herbal medicine additive for improving the cultivation survival rate of maternal oysters. The Chinese herbal medicine additive is characterized by being prepared from, by mass, 5-12% of gynostemma pentaphylla, 5-10% of radix bupleuri, 4-8% of pericarpium citri reticulatae, 3-5% of Mangnolia officinalis, 10-15% of plantain herb, 3-5% of ligusticum wallichii, 10-15% of herba portulacae, 5-10% of dandelion, 5-10% of Rhodiola rosea, 5-12% of bunge corydalis herb, 8-12% of radix isatidis, 5-10% of houttuynia cordata. 3-8% of pinellia ternata and 4-8% of lonicera japonica. The invention further discloses the preparation method and use method of the Chinese herbal medicine additive for improving the cultivation survival rate of the maternal oysters. The materials of the Chinese herbal medicine have a wide sources and are cheap. The production process is simple, the functional ingredients of the Chinese herbal medicine are extracted, the cultivation water quality of the maternal oysters is improved, outbreaking of diseases and microorganisms is effectively prevented, the immunity and disease resistance of the maternal oysters are enhanced, the cultivation survival rate of the maternal oysters is improved, and the additive is an ideal, environment-friendly, safe and novel Chinese herbal medicine additive.

The invention discloses a procypris rabaudi breeding method. The procypris rabaudi breeding method comprises the following steps that 1, an outdoor cement pond is cleared and sterilized; 2, a cement pond base fertilizer is supplemented and pond water fertilizing is performed, wherein fermented cow dung or chicken manure is collected as the base fertilizer, the usage amount per mu is 200-300 kg, and 1-2 kg of biological fish guano is supplemented per mu; 3, an oxygen increase pump and a submerged pump are erected in the cement pond; 4, the water quality before stocking is detected; 5, procypris rabaudi is transferred to the pond for breeding, wherein the procypris rabaudi fry stocking density is 50-100/m<2>, the parent procypris rabaudi stocking density is 0.3-0.5 kg/m<2>, the oxygen increase pump is started for oxygen increase, the submerged pump is started to flush water so as to form a flowing water environment. The procypris rabaudi breeding method is simple, strong in operability, good in practice applicability and capable of achieving effective control and treatment of procypris rabaudi ichthyophthiriasis. A test indicates that the initial cure rate after the procypris rabaudi infects the ichthyophthiriasis is 98% or above, and the medium cure rate is up to 80%-90%.

An in-situ cleaning method for the polluted water system includes such steps as providing luffa, tying them to floating rods via strings, tying a weight to said floating rod, arranging them in the water to make the luffa be suspended in water, and treating for 6-9 days.

The invention discloses a manual purifying belt which comprises a floating ball, elastic packing, ceramsite biochemical balls and a plummet, wherein one end of the elastic packing is fixed on the plummet, the other end of the elastic packing is fixed on the foam floating ball, and the middle of the elastic packing is connected in series with the ceramsite biochemical balls. When in actual use, the manual purifying belt is placed into natural water body, biological membranes can gradually grow from the surface and inside of the elastic packing and the ceramsite biochemical balls, and pollutants in water are gradually resolved and absorbed under the action of the biological membranes, so that the water quality of the water body is purified. The manual purifying belt has the advantages that the water quality of the water body can be effectively improved, the management and the maintenance are convenient, and the cost performance is high.