Abstract: A permeability-enhancing flooding system for tight oil reservoirs and preparation and use thereof are disclosed. The permeability-enhancing flooding system is present in a state of oil-in-water droplet and composed of a surfactant, an oil-soluble substance and water, and has an outer phase that is an aqueous solution containing the surfactant, and an inner phase that is the oil-soluble substance; and the surfactant comprises one of nonionic gemini surfactants and anionic gemini surfactants, or a combination of two or more thereof. The preparation process for the permeability-enhancing flooding system is simple to operate, suitable for industrialized production, and low in overall cost, and has obvious application prospects in the field of tight oil reservoirs for an enhanced oil recovery.

Abstract: Disclosed is Lactobacillus helveticus ZJUIDS12 for treating alcoholic liver disease and application thereof, belonging to food microorganisms. The Lactobacillus helveticus ZJUIDS12 has a strain preservation number of CGMCC NO. 23997. Moreover, disclosed is an application of the Lactobacillus helveticus ZJUIDS12 in preparing products for treating liver injury.

Abstract: The present invention discloses a N,N,N?,N?-tetradodecyl-substituted diphenyl ether sulfonate anionic Gemini surfactant and the synthesis method thereof. It has a structural formula of: and is prepared in a two-step reaction comprising: S1. subjecting 4,4?-diaminodiphenyl ether and bromododecane to an amine alkylation reaction to obtain N,N,N?,N?-tetradodecyl-substituted diphenyl ether; and S2. sulfonating the N,N,N?,N?-tetradodecyl-substituted diphenyl ether with concentrated sulfuric acid to produce the target product, N,N,N?,N?-tetradodecyl-substituted diphenyl ether sulfonate. The surfactant of the present invention has a high surface activity and can be synthesized with a simple procedure under mild reaction conditions, and can be easily separated and purified.

Abstract: A nonionic Gemini surfactant, (octylphenol polyoxyethylene ether disubstituted) dicarboxylic acid diphenyl ether has a structural formula of: and is prepared by a two-step reaction: S1, diphenyl ether 4,4?-dicarboxylic acid is subjected to an acyl chlorination reaction to obtain diphenyl ether 4,4?-dicarbonyl dichloride; S2, diphenyl ether 4,4?-dicarbonyl dichloride is subjected to an esterification reaction with octylphenol polyoxyethylene ether (OP-10) to obtain the target product (octylphenol polyoxyethylene ether disubstituted) dicarboxylic acid diphenyl ether. The surfactant is expected to be applied in tertiary oil recovery as an alkali/surfactant, in polymer/surfactant binary composite flooding, in alkali/surfactant/polymer ternary composite flooding, as a microemulsion emulsifier and the like, and it can also be compounded with a common surfactant to reduce the use cost, and thus create conditions for its large-scale application.

Abstract: An ionic liquid (IL)-containing perovskite precursor composition includes perovskite precursors; and a salt of a cationic imidazole derivative in which at least one of the two nitrogen atoms in the imidazole ring is linked to a carbon chain bearing a cyano (—C?N) group. A perovskite solar cell with high stability includes a layer constituted by a perovskite film formed using the perovskite precursor composition.

Abstract: A permeability-enhancing flooding system for tight oil reservoirs and preparation and use thereof are disclosed. The permeability-enhancing flooding system is present in a state of oil-in-water droplet and composed of a surfactant, an oil-soluble substance and water, and has an outer phase that is an aqueous solution containing the surfactant, and an inner phase that is the oil-soluble substance; and the surfactant comprises one of nonionic gemini surfactants and anionic gemini surfactants, or a combination of two or more thereof. The preparation process for the permeability-enhancing flooding system is simple to operate, suitable for industrialized production, and low in overall cost, and has obvious application prospects in the field of tight oil reservoirs for an enhanced oil recovery.

Abstract: A liquid cooling radiator based on a working medium capable of liquid-liquid phase separation includes a cooling fan, a micro liquid pump, a mixing pipe and a heat exchanger which are connected in sequence via a plastic tube. The liquid cooling radiator uses a solution capable of liquid-liquid phase separation at a lower critical separation temperature as a working medium, and is sealed after filling the solution into pipelines of the liquid cooling radiator. By replacing a working medium of the active CPU liquid cooling radiator, a heat dissipation performance in a limited space under a condition of a same pump power consumption, is greatly improved, a viscosity of the working medium in a heat-carrying state is reduced to decrease a flow resistance, which realizes both an enhancement of heat transfer and a reduction of flow resistance.

Abstract: The invention discloses a core-shell structured anionic nano microemulsion system, and preparation and application thereof. The system comprises an anionic Gemini surfactant, an oil phase material, a solubilizer and water; wherein the microemulsion has a core-shell structure, with the outer shell being an anionic Gemini surfactant, and the inner core being an oil phase material. The anionic Gemini surfactant is N,N,N?,N?-dodecyl tetrasubstituted diphenyl ether sulfonate having the structural formula: The anionic nano-microemulsion system of the present invention is homogeneous and transparent, has a spherical core-shell structure, has a nanometer size (3 to 40 nm) as droplets, has a narrow particle size distribution, is not easy to agglomerate, has good stability, and has an ultra-low interfacial tension and a capability of reducing viscosity of crude oil.

Abstract: The invention discloses a core-shell structured non-ionic nanoemulsion system and the preparation and use thereof. The system comprises a non-ionic gemini surfactant, an oil phase material, a solubilizer, and water; wherein the microemulsion has a core-shell structure, with the outer shell being the non-ionic Gemini surfactant, and the inner core being the oil phase material. The non-ionic Gemini surfactant is di(octylphenol polyoxyethylene ether)-substituted dicarboxylic acid diphenyl ether having the structural formula: The non-ionic nanoemulsion system of the present invention is homogeneous and transparent, and has a spherical core-shell structure with nanometer-sized (3-40 nm) droplets, narrow particle size distribution, low tendency to agglomerate, good stability, and both an ultra-low interfacial tension and the ability to reduce viscosity of crude oil.

Abstract: The present disclosure provides a single-side modified ?-Anderson-type heteropolymolybdate organic derivative having an anionic moiety with a general formula represented by: ?-{[RC(CH2O)3]M(OH)3Mo6O18}3?; ? represents a non-planar folded structure; R=substituted or unsubstituted phenyl, CnH2nX (n is an integer from 0 to 22; X?H, OH, NH(CH2)3SO3H, NHCH2COOH, NH2, or NO2); M=Cr3+. The single-side modified ?-Anderson-type heteropolymolybdate organic derivative can be prepared under hydrothermal conditions.

Abstract: The present invention provides an amphiphilic molecular sieve containing a hydrophilic group on the outside and a lipophilic group on the inside and a production method thereof. The production method comprises: dispersing the ZSM-5 spherical nano-molecular sieve into toluene, adding thereto an organosilane containing a hydrophilic group and reacting at 40-80° C. for 2-16 h, to obtain a molecular sieve containing a hydrophilic group; placing the molecular sieve containing a hydrophilic group in an aqueous solution of sodium hydroxide and reacting at 50-90° C. for 10-50 min, to obtain a molecular sieve containing a hydrophilic group on the outside; dispersing the molecular sieve containing a hydrophilic group on the outside into toluene, adding thereto an organosilane containing a lipophilic group and reacting at 40-80° C. for 2-12 h, to obtain the amphiphilic molecular sieve containing a hydrophilic group on the outside and a lipophilic group on the inside.

Abstract: The invention discloses a core-shell structured non-ionic nanoemulsion system and the preparation and use thereof. The system comprises a non-ionic gemini surfactant, an oil phase material, a solubilizer, and water; wherein the microemulsion has a core-shell structure, with the outer shell being the non-ionic Gemini surfactant, and the inner core being the oil phase material. The non-ionic Gemini surfactant is di(octylphenol polyoxyethylene ether)-substituted dicarboxylic acid diphenyl ether having the structural formula: The non-ionic nanoemulsion system of the present invention is homogeneous and transparent, and has a spherical core-shell structure with nanometer-sized (3-40 nm) droplets, narrow particle size distribution, low tendency to agglomerate, good stability, and both an ultra-low interfacial tension and the ability to reduce viscosity of crude oil.

Abstract: The invention discloses a core-shell structured anionic nano microemulsion system, and preparation and application thereof. The system comprises an anionic Gemini surfactant, an oil phase material, a solubilizer and water; wherein the microemulsion has a core-shell structure, with the outer shell being an anionic Gemini surfactant, and the inner core being an oil phase material. The anionic Gemini surfactant is N,N,N?,N?-dodecyl tetrasubstituted diphenyl ether sulfonate having the structural formula: The anionic nano-microemulsion system of the present invention is homogeneous and transparent, has a spherical core-shell structure, has a nanometer size (3 to 40 nm) as droplets, has a narrow particle size distribution, is not easy to agglomerate, has good stability, and has an ultra-low interfacial tension and a capability of reducing viscosity of crude oil.

Abstract: The invention discloses a nonionic Gemini surfactant, (octylphenol polyoxyethylene ether disubstituted) dicarboxylic acid diphenyl ether and its synthesis method, which nonionic Gemini surfactant has a structural formula of: and is prepared by a two-step reaction: S1, diphenyl ether 4,4?-dicarboxylic acid is subjected to an acyl chlorination reaction to obtain diphenyl ether 4,4?-dicarbonyl dichloride; S2, diphenyl ether 4,4?-dicarbonyl dichloride is subjected to an esterification reaction with octylphenol polyoxyethylene ether (OP-10) to obtain the target product (octylphenol polyoxyethylene ether disubstituted) dicarboxylic acid diphenyl ether.

Abstract: The present invention discloses a N,N,N?,N?-tetradodecyl-substituted diphenyl ether sulfonate anionic Gemini surfactant and the synthesis method thereof. It has a structural formula of: and is prepared in a two-step reaction comprising: S1. subjecting 4,4?-diaminodiphenyl ether and bromododecane to an amine alkylation reaction to obtain N,N,N?,N?-tetradodecyl-substituted diphenyl ether; and S2. sulfonating the N,N,N?,N?-tetradodecyl-substituted diphenyl ether with concentrated sulfuric acid to produce the target product, N,N,N?,N?-tetradodecyl-substituted diphenyl ether sulfonate. The surfactant of the present invention has a high surface activity and can be synthesized with a simple procedure under mild reaction conditions, and can be easily separated and purified.

Abstract: The present invention provides a nano-silica dispersion having amphiphilic properties and a double-particle structure and its production method. The production method comprises: producing a lipophilically modified nano-silica alcosol which is denoted as a first reaction solution by adding a silane coupling agent containing a lipophilic group to a nano-silica alcosol as a raw material; producing a hydrophilically modified nano-silica alcosol which is denoted as a second reaction solution by adding a silane coupling agent containing a hydrophilic group into a nano-silica alcosol as a raw material; producing the nano-silica dispersion having amphiphilic properties and a double-particle structure by adding 3-aminopropyltriethoxysilane to the first reaction solution, stirring, then mixing the resultant with the second reaction solution. The present invention further provides a nano-silica dispersion having amphiphilic properties and a double-particle structure produced by the above production method.

Abstract: The present invention provides an amphiphilic molecular sieve containing a lipophilic group on the outside and a hydrophilic group on the inside and a production method thereof. The production method comprises: dispersing the nano-ZSM-5 molecular sieve into toluene, adding an organosilane containing a lipophilic group and reacting at 60-100° C. for 4-16 h, to obtain a molecular sieve containing a lipophilic group; placing the molecular sieve containing a lipophilic group in a mixed solution of sodium hydroxide solution and ethanol and reacting at 60-95° C. for 20-60 min, to obtain a molecular sieve containing a lipophilic group on the outside; dispersing the molecular sieve containing a lipophilic group on the outside into toluene, adding an organosilane containing a hydrophilic group and reacting at 60-100° C. for 4-16 h, to obtain the amphiphilic molecular sieve containing a lipophilic group on the outside and a hydrophilic group on the inside.

Abstract: The present disclosure discloses a local oscillator feedthrough signal correction apparatus, including a microprocessor control unit, a first digital-to-analog converter, a second digital-to-analog converter, a mixer, a local oscillator, a signal output line, a signal splitter, and a detector tube. The signal splitter is disposed in the signal output line, and the first digital-to-analog converter and the second digital-to-analog converter are configured to provide the mixer with quadrature direct current components VI and VQ used for local oscillator feedthrough signal correction. The mixer outputs a local oscillator feedthrough signal to the signal output line. The signal splitter obtains the local oscillator feedthrough signal by means of splitting, and the detector tube detects the local oscillator feedthrough signal.

Abstract: The present disclosure provides a single-side modified ?-Anderson-type heteropolymolybdate organic derivative having an anionic moiety with a general formula represented by: ?-{[RC(CH2O)3]M(OH)3Mo6O18}3?; ? represents a non-planar folded structure; R=substituted or unsubstituted phenyl, CnH2nX (n is an integer from 0 to 22; X=H, OH, NH(CH2)3SO3H, NHCH2COOH, NH2, or NO2); M=Cr3+. The single-side modified ?-Anderson-type heteropolymolybdate organic derivative can be prepared under hydrothermal conditions.