1924results about How to "Improve salt tolerance" patented technology

The invention discloses a temperature resistant salt tolerant high efficiency gel and a preparation method and application thereof. The preparation method is characterized in that the preparation method comprises the following steps: preparing a comb-shaped associated copolymer PAH containing macromonomers and functional hydrophobic monomers into an aqueous solution having the concentration of 0.1 to 4g / L, the crosslinking agent concentration of 0.01 to 1.0g / L, the surfactant concentration of 0.01 to 8mmol / L and the sodium sulfite thermal stabilizer concentration of 0.005 to 1.0g / L; adding the aqueous solution into a mixing container with a stirring device; stirring the aqueous solution evenly at the room temperature; regulating the pH value of the solution to be equal to between 4 and 11, and obtaining a temperature resistant salt tolerant high efficiency gel polymer solution system used for tertiary oil recovery and scavenge, displacement modification, profile modification or water shutoff. The polymer solution system has micro-crosslinking to form the gel during the flowage inside the oil reservoir. The gel has good elasticity, not easy dehydration, stable gelling performance, and excellent tackification, temperature resistance, salt tolerance, shearing resistance and ageing resistance.

A total nutrient liquid fertilizer containing amino acids comprises, by weights, 6-12 parts of N, 1-6 parts of P, 3-10 parts of K, 1-3 parts of Ca, 1-3 parts of Mg, 9-13 parts of Zn, 2-10 parts of Mn, 1-2 parts of B, 0.5-2 parts of Cu, 0.2-0.5 parts of Mo, 3-10 parts of Fe, 10-15 parts of amino acids, 1-10 parts of a plant growth regulator, 2-5 parts of an organic chelating agent and 30-40 parts of water. The liquid fertilizer provides comprehensive nutrition for plants, enhances the freeze, drought, salt and disease resistance of the plants, enhances the synthesis and translocation of substances in the plants, promotes the formation of adenosine triphosphate (ATP), promotes the photosynthesis and protein synthesis, induces the formation of chlorophyll, promotes the cell protoplasm flow, improves the cell vitality and accelerates the growth of the plants.

The invention discloses a bacillus megaterium strain X3 and application thereof to plant growth promotion. The bacillus megaterium strain X3 is preserved in the China General Microbiological Culture Collection Center (CGMCC) on May 11, 2015 with the preservation number of CGMCC No.10803, is obtained through separation of indoleacetic acid, has the characteristics of siderophore production, phosphate solubilizing, ammonia producing, salt tolerance and disease suppression, can remarkably promote crop growth and improve corn yield, and meanwhile, can increase the diversity and the abundance of microbes in soil. The bacillus megaterium strain X3 is quick in reproduction, simple in production process, strong in adversity ability, easy to preserve and conductive to industrial production, and can not only prevent and cure soil-borne diseases but also promote plant growth when utilized to prepare a bio-fertilizer, thereby having a wide application prospect.

The invention is directed to stable crosslinked water-soluble swellable polymers and methods for making same. More particularly, the invention relates to a composition comprising expandable polymeric particles having anionic sites and labile crosslinkers and stable crosslinkers, said particle mixed with a fluid and a cationic crosslinker that is capable of further crosslinking the particle on degradation of the labile crosslinker and exposure of the anionic sites so as to form a gel. A particularly important use is as an injection fluid in petroleum production, where the expandable polymeric particles are injected into target zone and when the heat and / or suitable pH of the target zone cause degradation of the labile crosslinker and the particle expands, the cationic crosslinker crosslinks the polymer to form a gel, thus diverting water to lower permeability regions and improving oil recovery.

The invention relates to a biological denitrification method for salt-containing sewage, which comprises the following steps: adding a denitrification microbial inoculant into a biochemical sewage treatment system, and simultaneously starting the nitrification-denitrification biological denitrification treatment processes, wherein the sewage treatment temperature is 18-40 DEG C, the dissolved oxygen is 0.1-5 mg / L, and the pH value is 7.0-9.0. The denitrification microbial inoculant contains one or two of Staphylococcuscohnii FSDN-C, Arthrobactercreatinolyticus FDN-1 and Flavobacteriummizutaii FDN-2, and also contains one or two of Paracoccusdenitrificans DN-3 and Methylobacteriumphyllosphaerae SDN-3. The method provided by the invention can effectively treat high-salt-content sewage, enhances the adsorptivity and flocculence for sludge, has wide application range for wastewater quality and high impact resistance to salt-containing sewage, and obviously enhances the sewage treatment effect on the premise of removing pollutants, such as ammonia nitrogen, COD (chemical oxygen demand) and the like.

The preparation process of high water absorption resin includes following steps: neutralizing acrylic acid monomer with alkali solution to 60-90 % neutralizing degree, adding functional monomer in 0.5-50 % of total monomer weight, water soluble initiator or oxidation-reduction system in 0.05-0.5 % and water soluble cross-linking agent in 0.005-0.2 %; feeding the said mixed liquid into reactor, adding non-polar organic solvent in 2-10 times the volume of the mixed liquid and containing non-ionic surfactant, stirring to form inverse suspended polymerizing system; heating to 35-80 deg.c for free radical cross-linking copolymerization while adding oil soluble cross-linking agent in 0.005-0.3 % total monomer weight; dewatering after finishing polymerization, separation and drying to obtain the high water absorption resin. The obtained polyacrylate resin has the advantages of powerful water absorption, high salt tolerance, high gel strength and fast water absorption speed.

The invention relates to a rice salt-tolerant gene OsRR22 mutant, an encoded amino acid sequence thereof, a plant and a making method of the mutant, and belongs to the technical field of plant biology. A CRISPR / Cas9 technology is sued to edit self-selected rice variety WDR58 with rice salt-tolerant gene OsRR22 to obtain a rice salt-tolerant gene OsRR22 function deleted mutant new germplasm WDR58-cas-1 with important application values. The mutant can significantly increase the salt tolerance of rice, and can be applied to high-yielding salt-tolerant rice breeding.

The invention discloses a soil conditioner for saline water irrigation of saline-alkali land facility vegetables. The soil conditioner comprises the following raw materials: 30-43% of inorganic calcium preparation, 15-28% of organic preparation, 20-33% of mineral preparation, 10-23% of additive, 7-20% of nutrient and 5-13% of steam reduction agent. After the soil conditioner for saline water irrigation of saline-alkali land facility vegetables is fertilized into soil, accumulation of salt in irrigation saline water in the soil can be reduced, sodium ions and chloride ions are promoted to be discharged out of the soil or even soil body at the crop root layer along with the irrigation water, the ratio of the sodium ions and the chloride ions in salt ion chemical components of the soil is reduced, the soil structure is improved, water retention and steam reduction are achieved, the soil permeability is increased, and meanwhile, the soil conditioner has significant effects on promotion of nutrient absorption and growth of facility vegetables, improvement of salt resistance, and improvement of the quality of the saline-alkali land facility vegetables.

The invention relates to a hydrophobically associating polymer and mixed surfactant binary compound oil displacement system for use in tertiary oil extraction. The system mainly comprises the following components in percentage by weight: 0.1 to 0.3 percent of hydrophobically associating polymer, 0.1 to 0.6 percent of surfactant and 99.2 to 99.8 percent of water. The hydrophobically associating polymer in the system has high temperature resistance, high salt resistance and viscosity increasing capacity and can largely reduce dosage of polymer; and with high solubilizing capacity, the polymer can increase the dissolution of the surfactant in sewage, thereby increasing the use concentration of the surfactant. The oil displacement system which is dissolved by sewage from extraction can save lots of fresh water; with high viscosity increasing capacity, the system can effectively control flow rate, increase swept volume, increase oil water interface tension to 10<-3>mN / m and increase the oil extraction rate; and because of high stability and injection property, the system can be injected in large dose. According to an indoor oil displacement experiment, the binary compound oil displacement system can improve the extraction rate by over 20 percent compared with that of water displacement. The system without alkali avoids serious damage to the oil layer and corrosion and damage to oilpipes and has a great application prospect.

The invention discloses plant stress tolerance correlative protein kinase, an encoding gene and application thereof. The protein refers to the protein of 1) or 2): 1) the protein formed by an amino acid sequence shown by a second sequence in a sequence table; or 2) the plant stress tolerance correlative protein which is formed through the substitution and / or lack and / or addition of one or a plurality of amino acid residue radicals on the amino acid residue radical sequence of the second sequence in the sequence table and is derived from the protein of 1). The encoding gene of the protein is introduced into arabidopsis mutant sos2-1 or wild type arabidopsis for improving the salt tolerance and the drought tolerance of transgenic plants.

The invention relates to a three-phase foam complex oil flooding system and application thereof. The three-phase foam complex oil flooding system consists of a foaming agent, a foam stabilizer, water and gas, wherein the foaming agent and the foam stabilizer are uniformly dispersed into the water to form an oil flooding system solution; the proportion of components is as follows: the foam stabilizer is 0.1-0.3% in percentage by mass, and the foaming agent is 0.1-0.4% in percentage by mass; the gas is nitrogen, carbon dioxide or natural gas; the volume ratio between the oil flooding system solution and the gas is 1:(1-1.5), and the oil flooding system solution and the gas are alternately injected into the stratum or rock cores. The three-phase foam complex oil flooding system disclosed by the invention can be used for reducing the liquid discharge speed of a liquid membrane, increasing the viscoelasticity and strength of the liquid membrane, and ensuring that the foam is more stable, has good oil flooding effects, and can be used for enhancing the oil recovery.

The invention relates to a preparation method of organic / inorganic compound semi-interpenetrating network super-absorbent, which composites linear polycation and polymer to obtain organic / inorganic compound semi-interpenetrating network super-absorbent. The inventive product has high thermal stability, strength and salt tolerance, which can be used in sanitary and soil improvement fields. The preparation method comprises using cation monomer in-situ intercalation polymerization composite method or linear polycation direct intercalation composite method to prepare a composite solution of polycation and layered silicate, adding monomer, cross linker and initiator, polymerizing and obtaining gel at 20-90DEG C. The invention has the advantages that the invention polymerizes polycation and layered silicate to improve compatibility, and uses inter-penetrating network structure and organic / inorganic composite structure to improve product strength and salt tolerance.

The invention belongs to the field of biochemistry analysis technology, and specifically relates to a one-step concentration and demineralization purification treatment method of biological samples by the use of patterning surface. The patterning surface can be widely applied in pretreatment and detection of biological samples. The method comprises the following steps of: constructing sealing patterning surface of hydrophobic-hydrophilic-hydrophobic region on substrate; dropping a polypeptide or protein solution onto the patterning surface prepared by the above step, naturally drying at room temperature to obtain dried sample points; dropping a substrate solution onto the above dried sample points, and naturally drying at room temperature and forming uniform cocrystallization of the sample and substrates on the patterning surface, so as to realize the concentration and demineralization purification treatment of biological samples. By the use of the patterning surface constructed in the invention, in MALDI-TOF MS detection, signal noise ratio, sensitivity and salt tolerance are significantly improved. The method has a great practical application value.

The invention discloses a preparation method of starch-based amphiprotic super absorbent resin with semi-interpenetrating network structure, which uses starch material and hydrophilic vinyl unsaturated monomer, in the presence of cross linker and initiator, via crosslinking, grafting and copolymerization to form a network polymer, to be interpenetrated with linear polycation in the solution to obtain the starch-based amphiprotic super absorbent resin with semi-interpenetrating network structure. The inventive product has good liquid absorbability, salt tolerance and strength, with simple and easy production, which can be used as water absorbent of biological degradation and used in agriculture and sanitary fields.

The invention discloses a polymer nano-silica temperature-resistant, salt-tolerant and fluid loss reducing agent and a preparation method thereof. According to the preparation method, in the presence of nano-silica, a polymer-base nanometer composite material with amphiphilic block hydrophobic associating polymer wrapping inorganic nano-silica is successfully synthesized by virtue of a micellar emulsion polymerization method and combines the rigidity and the heat stability of the inorganic nano-silica and the characteristics of the amphiphilic block hydrophobic associating polymer together, and the temperature resistance, the salt tolerance and the thickening property of the polymer are obviously improved by virtue of the polymer-base nanometer composite material on the basis of the existing good performances of the amphiphilic block hydrophobic associating polymer. As a temperature-resistant, salt-tolerant and fluid loss reducing agent for a drilling fluid in the drilling engineering, the polymer nano-silica temperature-resistant, salt-tolerant and fluid loss reducing agent has a remarkable fluid loss reducing effect under high temperature and high salinity.

A resin molded article having an excellent molding performance and an excellent snow melting salt resistance is provided. The present invention is a resin molded article having an excellent snow melting salt resistance. An outer layer portion comprises 100 parts by weight of a polyamide resin and 3 to 40 parts by weight of an impact resistant material. The polyamide resin essentially consists of 40 to 99% by weight of polyamide 66 and 1 to 60% by weight of aromatic polyamide resin.

The invention discloses a method for preparing functional gold nanoparticles with high stability, which belongs to the technical field of material chemistry. The method comprises the following steps of: the DNA-assisted synthesis of the gold nanoparticles, the salt tolerance experiment of the synthesized gold nanoparticles, the representation of the synthesized gold nanoparticles and the biometric identification of the DNA on the surfaces of the gold nanoparticles. In the method, four kinds of DNAs with three different lengths are utilized and a chloroauric acid is reduced by trisodium citrate to realize the assisted synthesis of the gold nanoparticles; the DNAs of 12 basic groups are obtained by performing representation with an electron microscope to assist in synthesizing the uniform spherical gold nanoparticles, and particularly, the gold nanoparticles obtained by the 12-G-assisted synthesis have regular shapes and a uniform particle size; the salt-tolerant effect of the gold nanoparticles obtained by the salt tolerance experiment of the synthesized gold nanoparticles can be bettered by 20 times; and the gold nanoparticles can enhance the fluorescence of FAM-DNA, and are expected to be well applied to the preparation of nanometer medicaments and nanodevices.

The invention discloses an etherified-starch-grafted-copolymer super absorbent resin and a preparation method thereof. The preparation method includes: subjecting starch serving as raw materials to double etherification, namely cationization and carboxymethylation under the action of etherifying agents; using prepared etherified starch for graft copolymerization; and washing, drying, crushing and performing surface treatment for an etherified-starch grafted copolymer, so that a white transparent granular product is obtained. A molecular chain of the super absorbent resin includes a carboxylic acid group and a quaternary ammonium group which are synergistic, so that the super absorbent resin is more complete and uniform in structure, an excellent network structure is more easily formed, salt tolerance of the copolymer is improved, and further, the super absorbent resin is superior in application performance. The super absorbent resin has diversified hydrophilic functional groups such as carboxymethyl, sulfonyl, quaternary ammonium group and acylamino, the water absorbency of the super absorbent resin is 700-1400g / g, and the saline water absorbency is 80-170g / g.

The invention relates to melatonin solution capable of improving the anti-stress capability of a plant. The melatonin solution contains a solvent, wherein the concentration of melatonin in the solvent is 75-100mmol / L; the anti-stress capability is salt-resistant, cold-resistant and iron deficiency-resistant capability; the working concentration of the melatonin solution is 75-100micromol / L after the melatonin solution is diluted by distilled water; preparation steps are as follows: adding melatonin in the solvent suitable for being used in agricultural production, stirring and dissolving to obtain a finished melatonin solution product. According to the melatonin solution disclosed by the invention, simple and practicable effects are achieved, the operation is simple, the stability is good, and salt-resistant, cold-resistant and iron deficiency-resistant capability of the plant can be improved.

The invention relates to a method for preparing hydrophobically modified xanthan. The method comprises the following steps: taking water / iso-propyl alcohol mixing liquid as a solvent, taking ammonium lauryl sulfate as an emulsifying agent, taking alkyl bromide as an etherifying agent, and carrying out reaction under the temperature of 30 to 120 DEG C and the pH of 6 to 9 to modify xanthan to obtain the hydrophobically modified xanthan. The conditions of a synthesis reaction are wild, raw materials are easy to obtain, monomer conversion is high, and products are convenient to process. The hydrophobically modified xanthan still has higher viscosity when the xanthan has lower molecular weights, has good salt resistance, has good degradable performance so as to be convenient to perform subsequent sewage treatment, and has good environment affinity. The method is suitable for the oil extraction production of high salinity oil reservoirs.

The invention discloses a soybean HKT-like protein and the coding gene and application thereof, which belongs to the technical field of biology. The soybean HKT-like protein is named as GmSKC1 protein which has an ammonia sequence shown by the SEQ ID NO.2 in a sequence list. The coding gene of the protein is a DNA sequence shown by the SEQ ID NO.1 of the GmSKC1 gene. The soybean HKT-like protein and the coding gene thereof can be used for cultivating salt tolerant plant species, in particular salt tolerant soybean species. The expression of GmSKC1 is inducted by high salt. Under the stress of 150mM NaCl, GmSKC1 is strongly inducted in the soybean tissues such as root and leaves; and the expression of GmSKC1 in the soybean stem has a basically invariable trend. Compared with the non-transgene tobacco, the tobacco with the excessive expression of GmSKC1 remarkably improves the salt tolerance, thereby demonstrating that the GmSKC1 gene has an important action on improving the salt tolerance of plants.

The invention discloses a pre-crosslinking swellable profile control agent, a preparation method and application, and belongs to the technical field of oilfield chemistry. The pre-crosslinking swellable profile control agent is prepared from, by mass, 20-40 parts of mixed monomers, 0.01-0.05 part of a cross-linking agent, 3-8 parts of a reinforcing agent and 0.01-0.04 part of an initiating agent. The mixed monomers are prepared from acrylamide, acrylic acid and 2-acrylamido-2-methyl propanesulfonic acid in the mass ratio of (1.5-2.2):(1.5-2.5):(7.5-8.5). The reinforcing agent is sodium bentonite. The profile control agent has the advantages that the water swelling rate is high, and thus the requirement for effective plugging of large water channeling pore passages can be met; 2, the water swelling speed is low, and thus the requirement for stratum deep injection can be met; 3, the profile control agent has high strength and flexibility after water swelling; 4, the profile control agent is good in temperature resistance and salt resistance, and capable of effectively plugging channeling passages in polymer flooding-to-water flooding oil deposits, improving water injection profiles, making subsequently-injected water turn in the deep, increasing the swept volume and improving the subsequent water flooding efficiency.

The invention discloses a high temperature resistant modified starch filtration reducing agent and a preparation method thereof. The modified starch filtration reducing agent and the preparation method comprise that: with starch, a phenolic compound, alkenyl amide and alkenyl sulfonic acid as raw materials, an oil phase solution as a continuous phase and a nonionic surfactant as an emulsifying agent, and under catalytic actions of a reduction substrate and a hydrogen acceptor substrate, a starch graft copolymer is generated through a reaction. The filtration reducing agent provided by the invention is resistant to temperature of up to 175 DEG C, and simultaneously also has good salt and calcium resistance capabilities; and the preparation method is simple and easy to implement, and has mild and controllable reaction conditions, high grafting efficiency, fast reaction speed and low cost.

The invention discloses a slippery water fracturing fluid with ultra-low interfacial tension with crude oil after degradation. The slippery water fracturing fluid is prepared from an ultra-low interfacial tension drag reducer, a demulsify-cleanup additive, a clay stabilizer and a degrading agent. A preparation method of the slippery water fracturing fluid comprises steps as follows: 0.02%-0.10% in percentage by mass of the ultra-low interfacial tension drag reducer, 0.1%-0.2% in percentage by mass of the demulsify-cleanup additive and 0.3% in percentage by mass of the clay stabilizer are added to every ton of water, the agents are mixed to form a homogeneous solution, and 0.08% of the degradation agent is added from a mixing tank of blending equipment during construction. Additives of the slippery water fracturing fluid are all liquid phase, and the slippery water fracturing fluid can be quickly dispersed in water, have good salt tolerance, are not easily affected by the content of bacteria in a fluid preparation solution and have a stable drag reduction effect under the construction displacement of 6-20 m<3> / min; when applied to improvement of low-permeability oil and gas reservoirs, the slippery water fracturing fluid can reduce the interfacial tension between a gel breaking liquid and crude oil and reduce string and construction friction, helps production of the crude oil, increases of the yield of the crude oil and can be prepared repeatedly from backflow fracturing fluids.

The invention discloses retarding-swelling salt-tolerant high-viscoelasticity particles with an interpenetrating network structure and a preparation method thereof. The method comprises the following steps: preparing liquid A: dissolving polymeric alcohol at certain temperature and cooling; preparing liquid B: neutralizing unsaturated carboxylic acid to a certain pH value; preparing liquid C: uniformly mixing a crosslinking agent 1, unsaturated amide, an initiator and attapulgite with the liquid B; uniformly mixing the liquid A with the liquid C, adding a crosslinking agent 2, and preserving heat at certain temperature; and finally, drying and granulating the polymer. The novel retarding-swelling salt-tolerant high-viscoelasticity particles with the interpenetrating network structure, disclosed by the invention, have the advantages of good retarding-swelling property, high water swelling rate, good viscoelasticity and toughness and high strength, and can adapt to deep water injection profile control; and moreover, the cost is low, the preparation is convenient, and the environmental pollution is avoided.

The invention discloses a film mulching and ridging salt-tolerance planting method for sweet sorghum in coastal beach saline-alkali soil, and belongs to the technical field of crop growing. According to the method, base fertilizer is sufficiently applied in the saline-alkali soil in a coastal beach area, wherein the salt content of the saline-alkali soil is lower than 0.5%; after the soil is finely prepared, ditching is carried out to make beds according to the standard that the width of each bed face is 3-4m; the sweet sorghum is planted in large lines and small lines in suitable density according to the salt content of the soil, wherein the large line spacing is 80cm, and the small line spacing is 40cm; sweet sorghum species of which the growth period ranges from 110 days to 120 days are selected and used to be seeded in the last ten-day period of May and the first ten-day period of June; if soil moisture content is low, irrigation can be carried out to improve the soil moisture content, and seeding is carried out after the soil moisture content reaches a suitable value; after seeding and earthing, the small lines are covered by mulching film, small high ridges with the height of about 5cm and the width of about 10cm are heaped at the film edges, and seedlings are led out of the film timely after emerging. The high-yield culture techniques such as final singling and seedling keeping management, base fertilizer application, jointing fertilizer dressing and disease pest and weed integrated control are adopted after seedling emerging for field management, and the high yield of the sweet sorghum with the stem and leave fresh weight reaching 4-5ton per mu can be achieved.

The invention relates to the field of nano silica processing treatment and in particular relates to a method for preparing high-expansion nano silica composite microspheres. The method for preparing high-expansion nano silica composite microspheres comprises the following steps: performing surface grafting modification on SiO2 nanoparticles by using a surface modifier; adding the modified SiO2 nanoparticles into an organic solvent, simultaneously adding a dispersing agent, monomer acrylamide, acrylic acid, a cross-linking agent and an initiator, and ultrasonically and uniformly dispersing; introducing nitrogen into the dispersed solution for bubbling to remove oxygen; carrying out a polymerization reaction after oxygen removal; and repeatedly washing by using ethanol, thereby obtaining the composite microspheres. The microspheres disclosed by the invention have high structural stability, even if the solution temperature is close to the boiling point, the microspheres do not split, and the expansion properties are improved; and moreover, the initial size of the microspheres is less than 1 micron, the microspheres can be applied to plugging of tiny cracks, the final expansion ability can be over 10 times, and the microspheres have good salt tolerance, wide application range and reliable plugging capacity.

The invention relates to a process for treating high-concentration pyridine waste water, which comprises the following steps of: regulating raw water of waste water to be acidic, and treating the raw water in electro-catalytic oxidation equipment; leading effluent to a micro-electrolysis device for treatment under the condition of maintaining the acidity and oxygen enrichment of the waste water; regulating the effluent to be meta-alkalescent, and adding chemicals to perform coagulating sedimentation; and controlling the salinity of the waste water to be below 2 percent, and performing biochemical treatment in an anaerobic hydrolyzing device and a pressurizing biological contact oxidation device, so that the effluent reaches the conventional first-level standards for sewage discharge. Due to the adoption of a physico-chemical treatment process serving electro-catalytic oxidation as a core, pyridine pollutants can be decomposed effectively, the toxicity of the waste water can be reduced, and the biodegradability of the waste water can be improved; for biochemical treatment is realized by a combination process of anaerobic hydrolysis and pressurizing biological contact oxidation, the organic loads, treatment efficiency and salt-tolerant capacity of the biochemical treatment are improved; and the process has the characteristics of high impact load resistant capacity, good treatment effect and low operating cost, and the treated high-concentration pyridine waste water can reach the standard stably before discharge.