134 results about "Strong salt" patented technology

The invention relates to a salt tolerant corrosion and scale inhibitor for underground oil-gas wells and a preparation method thereof. The salt tolerant corrosion and scale inhibitor is composed of an oxazoline derivative, thiourea, cetyl pyridinium chloride, dodecyl dimethyl benzyl ammonium chloride, amino trimethylene phosphonic acid, hydroxyethylidene diphosphonic acid, hexamethylenetetramine, and methanol. The corrosion and scale inhibitor has very strong salt resistance, and under high salinity conditions (100000-200000mg / L), has a significant inhibiting effect on metal corrosion, and the corrosion inhibition rate can reach more than 80%. The organic phosphonic acid molecular structure of the reagent contain a double bond structure, the structure and the calcium ions and magnesium ions in water can chelate to form a stable complex to be adsorbed on seed crystal surface active sites, thereby inhibiting crystal normal growth. With significant scale inhibiting effect and a scale inhibiting rate up to 94%, the product is suitable for inhibiting corrosion and scaling phenomena of oil-gas well rods and pipes containing carbon dioxide, hydrogen sulfide and other complex media conditions under high salinity.

The invention relates to active black dye which essentially comprises fuchsine component A, orange yellow component B and navy component C, and is based on the component A, the component B and the component C; the weight percentage of the component A is 1 to 25 percent, the weight percentage of the component B is 1 to 25 percent, and the weight percentage of the component C is 50 to 95 percent; and the component A comprises at least a dye shown as formula (I) and a dye shown as formula (II), the component B comprises at least a dye shown as formula (III) and a dye shown as formula (IV), and the component C comprises at least a dye shown as formula (V). The active black dye has the advantages of high product solubility, strong salt and alkali resistance, high uptake date and color fixing rate, excellent dyeing fastness and environmental protection.

The invention discloses a power generation device adopting salinity gradient power. The power generation device comprises a permeating device and water turbines. The permeating device comprises a permeating electrode formed by parallel connection of a plurality of permeable membrane elements and used for dividing strong salt water and seawater into a high-concentration side and a low-concentration side. The water turbines correspond to the high-concentration side of the permeating device and are connected with an engine through a coupler so as to drive a motor to operate. After the strong salt water and the seawater are fed into the high-concentration side and the low-concentration side of the permeating electrode, the permeating electrode can convert permeating pressure difference into hydrostatic pressure on the high-concentration side and exert back pressure in corresponding size by the aid of permeating electrode, and the water turbines can be driven to rotate to drive a generator to operate. The seawater is taken as a low-concentration water supply side and the seawater higher in concentration is used for permeating power generation, so that fresh water resources can be saved, pretreatment cost can be reduced, the permeating pressure difference can be increased, and power density can be increased; instability and difficult grid connection by the power generation mode are avoided due to the characteristics of easy storage of salt.

The invention discloses a high-efficiency foaming agent for an acidic CO2 foam fracturing system, which is applicable to a CO2 foam fracturing system of an Ordos Basin gas well. The high-efficiency foaming agent for the acidic CO2 foam fracturing system is characterized by being prepared from the following raw materials in percentage by mass: 38 to 42 percent of a zwitterionic surfactant A, 40 to 45 percent of a zwitterionic surfactant B, 5 to 8 percent of an amphoteric Gemini surfactant, 0.3 to 0.5 percent of a macromolecular polymer and the balance of a solvent. The high-efficiency foaming agent for the acidic CO2 foam fracturing system has excellent foaming performance, a good foam stabilizing effect, strong salt resistance, oil resistance, temperature resistance and acid resistance, and can meet the requirement of gas well CO2 foams on fracturing and foaming.

The invention discloses a suppository composition with improved performance. The suppository composition comprises an aliphatic suppository substrate, mono-capryl-based glycerin, mono-lauroyl-based glycerin, polyoxyethylene, a suppository substrate of which the molecular structure contains polyethylene glycol and alkyl having 8 to 24 carbon atoms and a suppository medicament. The suppository composition has the advantages of improving production repeatability and retention value otherness, enhancing the function of a cavity administration retention substrate, improving stability, namely, changing melting performance, decreasing medicament releasing rate and solving or relieving problems such as scumming and the like, improving medicament releasing performance, increasing liquefaction or gelling speed and achieving stronger salt resistance and acid resistance and higher biocompatibility and the like.

The invention discloses a method for plating zinc-nickel alloy and trivalent chromium passivation on the metal surface, which is characterized in that it is processed through the following process steps: (1) removing surface grease, (2) removing surface oxide scale and rust, (3) ) electrolytic degreasing, (4) surface activation treatment, (5) galvanized nickel plating, (6) trivalent chromium plating passivation treatment, (7) sealing treatment, (8) finished product drying, inspection and packaging for storage. The method of the invention is applied to the corrosion-resistant and anti-corrosion coating treatment on the surface of metal parts such as automobiles, motorcycles and other parts. Its advantages are that the coating is uniform, firm, smooth, and has strong corrosion resistance. It can resist various strong corrosion in various harsh environments such as high temperature and salt spray. It has a long service life and significantly reduces and improves environmental pollution.

The invention relates to an expansion and solidification type plugging agent which comprises the following components in parts by weight: 0.5-2 parts of a calcium sulphoaluminate expanding agent, 1-4 parts of polypropylene fibers, 0.1-1 part of a water adsorption expansion type polymer, 1-5 parts of super absorbent resin SAP, 2-6 parts of puffed starch, 2-6 parts of salt-resistant clay, 20-40 parts of calcium carbonate and 0.1-0.5 part of high viscosity polyanionic cellulose PAC-HV. The preparation method comprises the following steps: sequentially adding the components in parts by weight to a kneading machine by a conventional preparation method under normal temperature and pressure; uniformly mixing and stirring; and crushing to a particle product with the grain size of 0.01-0.5mm till being dried. The plugging agent provided by the invention has the characteristics of high expansion rate, viscous flow capacity, plugging capacity, strong salt-resistance, flowability, pumpability, good coagulability, simple process, safe and quick construction, long coagulability, wide source of raw materials, high plugging success rate and the like, and is widely applied to plugging processes of large pore paths, subterranean rivers and great Karst cave leakage strata in petroleum and geological drilling.

The invention discloses a thick oil viscosity reducing agent prepared from a microbial surfactant and a preparation method thereof and relates to the technical field of the petrochemical industry. Thethick oil viscosity reducing agent comprises, by weight, 30-80% of a lipopeptide alcohol solution, 0.5-5% of an anionic surfactant, 0.5-10% of a non-ionic surfactant and the balance of an alcohol solvent. The preparation method comprises carrying out microbial fermentation to obtain a lipopeptide product as a surfactant ingredient and carrying out compounding to obtain the thick oil viscosity reducing agent. Compared with the existing viscosity reducing agent, the thick oil viscosity reducing agent has the characteristics of strong salt resistance, high temperature resistance, effective reduction of interfacial tension of oil and water and reduction of surface tension, has thick oil viscosity reducing effects of 80% to 95%, is safe and environmentally friendly and can effectively reduce acost.

The invention discloses slick water applied to shale gas industrialized fracturing exploitation and a preparation method thereof, and solves the problems of long period of fracturing construction and high cost of the existing slick water due to long liquid preparation time and high liquid preparation requirements. The slick water provided by the invention includes 0.05%-0.1% of an emulsion resistance reducing agent, 0.1%-0.2% of a fungicide, 0.1%-0.2% of a clay stabilizer, 0.09%-0.11% of a cleanup agent and the balance of water. The formula of the invention is reasonable in design, the emulsion resistance reducing agent dissolves and glues rapidly and has strong salt resistance, so as to not only greatly shorten the cycle of fracturing construction but also reduce the construction cost to meet the requirements for shale gas industrialized fracturing exploitation. The invention has the advantages of simple process, wide source of raw materials, and high application value and promotion value.

The present invention relates to a creatinine urine test paper which belongs to an in vitro diagnostic reagent. The creatinine urine test paper comprises the following components: 1000ml of 2M sodium hydroxide buffer solution with the pH value of 10.5-12.5, 2g-5g of sodium chloride or potassium chloride, 1g-7g of polyvinyl pyrrolidone, 100mg-200mg of orange G; 400mg-800mg of 3,5-dinitrobenzonic acid, and 1000ml of methanol. The creatinine urine of the invention has the following advantages: convenient use, excellent reliability, simple preparing method, simple operation and strong salt interference resistance.

The invention belongs to the field of high polymer materials and provides a salt resistant biochemical functional type flocculating agent used for oil field waste water. The structural formula of the flocculating agent is described in the specification. The main component of the salt resistant biochemical functional type flocculating agent used for the oil field waste water is a polyacrylamide / humic acid grafted copolymer. The invention also provides a preparation method of the flocculating agent. The preparation method comprises the following steps: taking humic acid, acrylamide and an initiator as raw materials, wherein the mass ratio of the humic acid to the acrylamide to the initiator is (0.5-5):100:(0.1-10); and hydrolyzing to obtain the grafted copolymer. The flocculating agent has extremely strong salt resistance, and the degree of mineralization resistance of the flocculating agent is 50,000mg / L. The flocculating agent provided by the invention can be used for effectively reducing the COD (Chemical Oxygen Demand) and the SS (Suspended Solid) of highly difficultly treated oil field waste water so as to enable sewage to reach a drainage standard.

The invention discloses a high performance calcium aluminate oil well cement, and belongs to the field of oil well cements of oil and gas well cementing, and the high performance calcium aluminate oil well cement comprises the following components by weight: 100 parts of calcium aluminate oil well cement, 20 to 40 parts of silicon powder, 0 to 10 parts of micro silica powder, 0 to 2 parts of a flow type regulator, 0 to 5 parts of a fluid loss agent and 0 to 5 parts of a retarder. According to the invention, the strength of the high performance calcium aluminate oil well set cement after 7days of maintenance is greater than 80MPa, the long-term strength is stable, and the high performance calcium aluminate oil well cement has strong salt resistance and acid resistance. In the mixing amount of the invention, the cement slurry rheological property is good, and mechanical properties of the set cement at high temperature and under high pressure are stable.

The invention relates to a Helianthus tuberosus variety breeding method, which belongs to the plant variety breeding technology field. The recyclable seawater stress cultivation is used, and the consistence of the seawater is set into six kinds of consistence: 0 percent, 10 percent, 25 percent, 50 percent, 75 percent, and 100 percent. Seawater is filtered repeatedly and systematically in the field, and the breeding object is the salt-resistant high-yield and high-quality. The south Helianthus tuberosus No.1 bred into after six generations grows strongly in the ratio of 3 to a thousand about salt soil, has strong salt resistant property and thick stalk, and has about ten branches 1m beneath the ground; the underground tuber has thin skin and more than ten bud eyes; the yield per mu is about 3000kg without pests. The dry weight of the tuber is 23-29 percent of the fresh weight. The variety has high yield, excellent quality, and strong salt resistance; can be cultivated in the coastal beach saline alkali soil or the inland saline alkali soil; can have broad application prospect in the fields of bio-energy plant material in our country, and can promote the development of related industries.

The invention relates to a method for removing invasive alien plants from reed communities, in particular to the method for removing the invasive alien plants from the reed communities. The method comprises the following steps that the alien plant distribution region is investigated, the region which is not suitable for the reed to grow is divided into a remaining region, a region which is suitable for the reed to grow is divided into a removing restoration region, the invasive alien plants in the remaining region are remained, and the invasive alien plants in the removing restoration region are subjected to cutting and short stubble remaining; the stubble remaining region is covered by plastic films with black upper surfaces until the invasive alien plants are choked to death; and the black plastic films are removed, and reed varieties with strong salt resistance and water resistance performance are planted again in the covered region. The method provided by the invention can favorable for the fast efficient and selective cleaning of the invasive alien plants, the restoration and the growth of local plants are promoted, the health and the stability of the tidal wetland ecosystem are maintained, and after the skillful use, the ecological effect of lasting political stability of the tidal wetland ecosystem can be reached.

The invention discloses an improvement method of saline-alkali land and relates to the field of geological reconstruction. Through three steps of soil rapid salt elimination, subsoil treatment and green plant long-term improvement, the double effects of rapid plantation of desired plants and long-term improvement of soil can be realized. by the salt elimination method, quality of soil is rapidly improved, pH of soil is reduced, salt substances in soil are reduced, and permeability and water-retention fertilizer-conservation properties of soil are increased. As for subsoil, attapulgite and bagasse are utilized for lessening soil, waste fungus bran, humic acid and complex microbial inoculants are used for realizing chronic digestion of salt, long-term improvement of saline alkali soil is realized, and re-accumulation of soil is reduced. By the use of carbon slime, uprise of salt can be obstructed, and survival rate and growth rate of plants planted the first time are enhanced. As green plants have strong salt absorption capability and deep roots, the green plants can fully take away salt in soil during the growth process. Thus, the problem of high salt content of soil is fundamentally solved.

The invention relates to the field of plant gene engineering, providing a buckwheat Na+ / H+ antiporter FtNHX. The buckwheat Na+ / H+ antiporter FtNHX is provided with SEQ ID No:2 amino acid residue sequence in a sequence table, or the buckwheat Na+ / H+ antiporter FtNHX is obtained by the substitution, deletion or adding of one or multiple amino acid residues by SEQ ID No: 2 in the sequence table, has the same activity with the SEQ ID No:2 amino acid residue sequence and is derived by SEQ ID No:2. The gene for coding the protein is preferably selected from a nucleotide sequence comprising the 288th-1949th bit of SEQ ID No:1, or the gene is a nucleotide sequence which has more than 90% of homology with a DNA sequence specified by the SEQ ID No:1 and codes same functional protein. The invention also provides methods for recombinant vector construction, transgenic plant and the like to apply the above gene and protein, and can cultivate new improved gene plant species with stronger salt tolerance or other biological characters.

The invention relates to the field of the resource treatment of industrial wastewater, and discloses a resource treatment method of carbendazol production wastewater. The resource treatment method comprises the following steps of (1), carrying out a wet oxidation reaction on the carbendazol production wastewater, and degrading a residual organic matter in the oxidized wastewater; (2), recovering ammonia water in a rectifying tower; (3), removing hardness by adopting sodium carbonate; (4), adsorbing and removing an amine substance in the wastewater by resin, and resolving and regenerating the wastewater through an acid and an alkali, so as to obtain strong salt water; (5), recovering the acid and a salt by utilizing a bipolar membrane electrodialysis process; (6), carrying out subsequent biochemical treatment on low-salt-content water, and then discharging the low-salt-content water up to a standard. The method is simple to operate; based on a membrane technique, a resin exchange technique and a bipolar membrane electrodialysis technique, the high-efficiency resource utilization of the acid and the alkali in high-salt wastewater is realized; further, the recovered acid and alkali, on one hand, can be used as an agent to be circularly used for wastewater treatment and the resolution of the resin, and on the other hand, can be used as a product to produce economic benefit, thereby realizing appreciation.

The invention provides a coating inhibitor for a drilling fluid as well as a preparation method and application thereof. The preparation method of the coating inhibitor comprises the following steps of: mixing a vegetable gelatin, anhydrous sodium carbonate, ethanol, water, glycerol, trimethylamine and epoxy chloropropane at a weight ratio of (240-260):(2.4-2.6):(750-1,000):(200-500):(5-10):(80-100):(400-440), and enabling the mixed system to react for 4.5-5 hours under the reflux condition to obtain the coating inhibitor. The coating inhibitor provided by the invention is a natural polymer strong coating inhibitor and has the advantages of strong coating inhibiting performance, strong salt and calcium resisting capacity, no biotoxicity and low cost, and in addition, the coating inhibitor can be biodegraded easily, is simple in synthesis method and is favorable for protecting the oil-gas layer.

The invention provides a salt resistant calcium carbonate dispersing agent and preparation method thereof. The preparation method includes the following steps: (1) low valence transitional metal halide is added into a kettle, under the anaerobic condition, solvent and 2, 2'-bipyridine are added, and reaction is carried out, so as to obtain complex solution; (2) vinyl carboxylic ester monomer, vinyl acetate and initiator halogenated hydrocarbon are added, and reaction is carried out; (3) column chromatography is carried out to remove the transitional metal halide, and the obtained solution is added into NaOH solution to be hydrolyzed; (4) distillation is carried out to remove solvent, acetic acid and alcohol side product, then NaOH solution is added to regulate pH, and water is added to regulate weight solid content, so as to obtain the dispersing agent. The invention produces a poly (vinyl carboxylic acid-co-vinyl alcohol) sodium salt dispersing agent which has high dispersing efficiency and strong salt resistance and is used for calcium carbonate.

The invention discloses a RY2 strain of a root nodule nitrogen-fixing bacterial strain system and application thereof. The strain (Bradyrhizobium yuanmingense RY2) is preserved in the China Center for Type Culture Collection (CCTCC) on 13th November in 2009. The preservation number is CCTCC NO:M 209266. The RY2 strain of the root module nitrogen-fixing bacterial strain system can exclusively greatly improve the nitrogenase activity of TPRC2, so that the nitrogenase activity of the TPRC2 is over three times higher than that of TPRC5 and can achieve higher nitrogenase activity by using a few root nodules. The yield of stylosanthes guianensis can be improved by over 30 to 40 percent by inoculating the root nodule bacteria, and the root nodule bacteria can be suitable for intercropping of stylosanthes guianensis TPRC2 and provides a large number of nitrogen for the stylosanthes guianensis, crops and soil. Meanwhile, the RY2 has strong salt tolerance, can grow in the environment that the NaCl concentration is higher than 0.25mol / L, can be planted in the salinized soil and has better effects of improving the yield of the stylosanthes guianensis and utilizing and improving the salinized soil.

The invention provides sphingobium yanoikuyae with a function of degrading triphenyl phosphate. The bacterium is named YC-XJ2, has a preservation number of CGMCC No.18049, and enables 100mg / L TPhP ininorganic salt to be degraded by 99.7 percent in 24 hours. The sphingobium yanoikuyae strain YC-XJ2 has strong adaptability on temperature, can keep the degradation rate on TPhP at 95 percent at 40 DEG C, can keep the degradation rate on TPhP at 88 percent or more when the pH value is 4-10, has a degradation at 74.8 percent or more when the salt concentration is 0-10 percent, and shows extremely strong salt resistance. The strain can be applied to biological repairing of a TPhP polluted environment and has relatively good economic value and application prospect.

The present invention discloses a seawater-based fracturing fluid and a preparation method thereof. 100 parts of the fracturing fluid comprises, by weight, 0.3-0.8 part of a thickener, 0.1-0.6 part of a cross-linking agent, 0.05-0.1 part of an oxygen scavenger, 0.02-0.05 part of a tackifying auxiliary agent, 0.05-0.2 part of gel breaker, and the balance or part of seawater, wherein the thickener modified polyacrylamide is formed by carrying out copolymerization on acrylamide, a hydrophobically modified monomer and a sulfonate, the hydrophobically modified monomer is dodecyl alkyl halide, and the cross-linking agent is an organic zirconium cross-linking agent or an organic titanium-zirconium composite cross-linking agent. According to the present invention, with the seawater-based fracturing fluid and the preparation method thereof, the technical problems of being incapable of continuously mixing, insufficient tackifying performance, poor salt resistance and poor shearing resistance of the seawater-based fracturing fluid in the prior art are solved; and the seawater-based fracturing fluid with characteristics of good tackifying, strong salt resistance, strong shearing resistance and continuous mixing and suitable for offshore oil fields is provided.

The invention relates to a coal bed gas low temperature freshwater fuzzy-ball working fluid nucleating agent. The fuzzy-ball working fluid nucleating agent is prepared by using sodium dodecanesulphonate, octylphenol polyoxyethylene ether, dodecyldimethylamine oxide and triethanolamine lauryl sulfate. The fuzzy-ball working fluid nucleating agent is mainly used for forming a fuzzy ball nucleus in a fuzzy-ball working fluid system, has the characteristics of small dosage and large fuzzy ball nucleus strength, can effectively adjust the density of a fuzzy ball working fluid, has strong salt and calcium resistance, has good compatibleness with treatment agents for general working fluids, is suitable for the temperature environment with the temperature of 120DEG C or less, and is a low temperature fuzzy-ball working fluid nucleating agent.

The invention discloses a method for extracting melanin from sweet osmanthus peel and application of the extracted melanin. The method comprises the following steps: with sweet osmanthus peel as a rawmaterial, subjecting the sweet osmanthus peel to microwave drying and crushing, microwave radiation, extraction with an alkaline aqueous solution, acid hydrolysis of impurities, repeated washing withan organic solvent and repeated alkali dissolving; then carrying out acidifying to realize precipitation; carrying out purifying, and repeatedly washing a purified product with deionized water to remove Cl<->; and finally, carrying out freeze drying so as to obtain a pure melanin product. The method is simple to operate and can realize large-scale preparation. The prepared melanin has good stability at a temperature below 100 DEG C, less proneness to influence by the pH value and strong oxidation resistance; metal ions have little influence on the stability of the melanin; sugar / amino acid / organic acid has no obvious effect on the melanin and exerts certain color-enhancing effect; the melanin is applicable to most foodstuffs and has strong salt tolerance and high purity; and when the extracted melanin is applied to hair dyes, the melanin has good stability and can be extensively applied to hair dyeing.

The invention relates to a treatment method for improving the salt resistance of the wheat seeds, which comprises the steps of: soaking the winter wheat seeds by a 2% sodium humate water solution which is enriched with a large number of trace elements before sowing, and cooling to be air-dried; repeatedly putting the treated seeds into four culture medium soils, namely, the meadow-salt and alkali-weak salt light soil, the meadow-salt and alkali-medium salt light soil, the meadow-salt and alkali-strong salt light soil and the meadow-salt and alkali-externally strong salt light soil respectively at four times; and putting a test cup into a temperature control box to accelerate the germination. The germinating potential energy and the germinating rate of the winter wheat seeds provided by the method can be improved, and the growth of the winter wheat seeds in the salt-alkali soil can be promoted.

The invention discloses a method for separating taurine in a taurine crude product mother solution. A plurality of electrodialysis separation systems connected mutually are utilized to perform concentration and separation of a taurine solution and a salt solution on the taurine crude product mother solution. Each electrodialysis separation system comprises a weak salt tank, a strong salt tank and electrodialysis plants connected between the weak salt tank and strong salt tank, wherein an conductivity meter and a pressure pump are arranged below the weak salt tank and strong salt tank; all levels of electrodialysis plants continuously perform electrodialysis separation on the liquids pumped into the weak salt tank and strong salt tank until the conductivity of the separated weak phase salt water is lower than 5ms / cm; when a liquid chromatograph determines that the taurine / salt mass ratio is greater than 9:1, the weak phase salt water is subjected to reduced pressure concentration to obtain the taurine solution; when the conductivity of the strong phase salt water continuously separated by the electrodialysis plants is higher than 200 ms / cm, the thick phase salt water is subjected to reduced pressure concentration to obtain the salt solution, or else, the separation treatment of all levels of electrodialysis plants is continued. The method is simple to operate, and has the advantages of low operating cost and favorable separating effect.

The invention discloses an application of bacillus methylotrophicus BH21 with a preservation number of CGMCC No.11840 in preparing a microbial fertilizer with effects of promoting growth and improving salt resistance of plants, and discloses the microbial fertilizer which comprises excrements of poultry and livestocks, mushroom residues, breeding padding and the bacillus methylotrophicus BH21. A preparation method for the microbial fertilizer comprises the following steps: uniformly mixing the bacillus methylotrophicus BH21 and thoroughly decomposed excrements, performing fermentation for 4-5 days continuously by adopting a strip type stacking fermenting mode, turning over every day in a fermentation process, controlling a pile temperature not to exceed 45 DEG C, and obtaining the microbial fertilizer after fermentation is completed. The bacterial strain has relatively strong salt resistance, can promote plants to take root and grow, and can be combined with the thoroughly decomposed organic fertilizer to obtain the bio-organic fertilizer to provide rich nutrients for plant growth; and nutrients of the organic fertilizer also provide good nutrients for survival and colonization of the multifunctional bacterial strain.

The invention provides a novel plant strong salt tolerant gene AtNHXS1 acquired through DNA reshuffling technology, and the ionic transport activity of Na+ / H+ antiporter protein coded by the gene is stronger than that of wild Na+ / H+ antiporter protein ATNHX1. A nucleotide sequence of the gene as shown in SEQ ID NO:1 also comprises genes of the nucleotide sequence of sequence 1 in a sequence table with the homology between 70 and 100 percent, or a nucleotide sequence of an amino acid sequence of sequence 2 in a coded sequence table. The new Na+ / H+ antiporter has a protein of the amino acid sequence of sequence 2 in the sequence table, protein of the amino acid sequence of the sequence 2 with the homology between 70 and 100 percent, or protein which replaces, deletes or adds one or a plurality of amino acids in the amino acid sequence of the sequence 2 with the same homology. The invention also provides the construction of recombinant vector, the transgenic plant and other methods so as to apply the gene and the protein, thereby cultivating a novel variety of transgenic plant with strong capacity of salt tolerance or other improved biologic characters.

The invention relates to the field of plant genetic engineering and provides a novel plant strong salt-tolerant gene NHXS1 obtained by a restructuring technology. A nucleotide sequence of the plant strong salt-tolerant gene NHXS1 is SEQ ID NO: 1, or a DNA sequence which has 70 to 100 percent homology with the SEQ ID NO: 1 nucleotide sequence or a DNA sequence for coding a protein sequence of SEQ ID NO: 2. Na + / H + antiporter NHXS1 colded by the gene has stronger ion transport activity than the wild-type Na + / H + antiporter AtNHX1. The invention also provides methods for construction of recombinant vectors and transgenic plants to apply the genes and proteins, and can culture a novel breed of transgenic plant with stronger salt-tolerant property or other improved biological characteristics.

The invention discloses an anti-rust oil composition used in metal processing. The composition comprises the following raw materials in parts by weight: 30-40 parts of N32# machine oil, 10-20 parts of lubricating oil N15, 10-15 parts of petroleum sodium sulfonate T702, 2-3 parts of a lanolin magnesium soap, 2-3 parts of zinc naphthenate, 1-2 parts of triallyl cyanurate, 2-3 parts of oleic acid, 0.2-0.3 part of pentaerythritol tetra[beta-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], and 2-3 parts of a coalescing agent. According to the anti-rust oil composition used in metal processing disclosed by the invention, by adopting a method of compounding the coalescing agent by various corrosion inhibitors, the rust prevention performance of the anti-rust oil is far superior to that of conventional anti-rust oil, and the anti-rust oil disclosed by the invention has good moisture-resisting and rust preventing functions, and strong salt mist resistance and high low temperature resistance.