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732 results about "Solution system" patented technology

Solution of a System. In general, a solution of a system in two variables is an ordered pair that makes BOTH equations true. In other words, it is where the two graphs intersect, what they have in common. So if an ordered pair is a solution to one equation, but not the other, then it is NOT a solution to the system.

Lithium battery with polymer-coated sulfur/carbon composite material as anode

The invention relates to a lithium battery with a polymer-coated sulfur/carbon composite material as an anode. According to the invention, sublimed sulfur or sulfur powder and a conductive carbon material are mixed according to a mass ratio of 3:7-8:2; the mixture is subject to ball milling, such that a sulfur/carbon composite material is obtained; the composite material is dispersed in a solution, and a polymer monomer is added to the solution; under a low temperature and the protection of inert gas, an oxidizing agent is added for initiating polymerization; the material is centrifuged, washed, and dried; the obtained polymer-coated elemental sulfur/carbon composite material, acetylene black and PTFE are mixed; a dispersant is added to the mixture, and the mixture is sufficiently mixed by stirring; the mixture is rolled into a sheet, and is vacuum-dried under a temperature of 55 DEG C, such that an electrode sheet is obtained. The prepared electrode sheet is adopted as an anode, metal lithium is adopted as a cathode, and a solvent type organic solution system containing 0.2mol/L of a waterless lithium nitrate additive is adopted as electrolyte, and a battery is assembled. With the electrode material, the assembled lithium battery is advantaged in high specific capacity, good circulation stability, and excellent heavy-current charge/discharge performances. The preparation method is advantaged in simple process, low cost, and good repeatability.

Multiphase physical transport modeling method and modeling system

A general, computational-mathematical modeling method for the solution of large, boundary-coupled transport problems involving the flow of mass, momentum, energy or subatomic particles is disclosed. The method employs a modeling processor that extracts a matrix operator equation (or set of equations) from a numerical transport code (NTC). The outputs of software codes, available for modeling physical problems governed by conservation laws in the form of differential equations, can be processed into closed-form operator equations with the method. Included is a numerical transport code functionalization (NTCF) model which can be determined numerically, based on a system of solutions of an NTC, evaluating outputs for a given set of inputs. The NTCF model is a linear or nonlinear, multi-variable operator equation or set of such equations. The NTCF model defines relationships between general, time-variable inputs and outputs, some known and some unknown, considered as boundary values. The user of an NTCF model can directly work with the processed model output, instead of running the original numerical code in general applications of a boundary-value problem. The numerical transport code functionalization model can be employed as a surrogate for representing the numerical transport code to provide a solution to the transport problem. The invention enables modeling efficiency and availability to be increased, while computational complexity and cost decreased. Computational times for complex modeling problems can, in some cases, be dramatially reduced, for example by several orders of magnitude.

Layer combination controllable carbon material with nano pole of different scale, preparation method and application

InactiveCN101054171AEfficient ion transport capabilityControllable ratioScale structureHigh energy
The invention relates to a method for design advanced materials with nano-scaled structure and techniques for preparing same. In particular, the invention relates to a carbon material capable of controllable laminated combination with the nano-holes of variable sizes and preparation and application thereof. The method comprises the steps of: preparing metal oxide sol in the alkali solution system, which is then mixed with an alcohol solution of an alcohol-soluble resin; the oxide sol being used as the template and water being the resin precipitation agent during the process to directly prepare resin/oxide sol composite system. After solvent removal, carbonization, activation and template removal processes, the carbon material with laminated nano-holes combination is prepared which is of controllable micro-holes proportion, controllable medium-holes aperture and proportion, controllable big-holes aperture and propotion and concentrated distribution of medium-holes and big-holes apertures. The carbon material capable of controllable laminated combination with the nano-holes of variable sizes prepared in the invention is characterized in laminated holes structure, excellent ion transfer performances and high electrochemical active specific surface area and the material is expected to be used as high energy density high power density electrochemical capacitor used electrode material.

Low-alkaline liquid accelerating agent and preparation method thereof

The invention belongs to the technical field of tunnel construction, and relates to a low-alkaline liquid accelerating agent and a preparation method thereof. For the low-alkaline liquid accelerating agent, aluminium sulfate solution is neutralized with sodium aluminate solution to produce aluminium hydroxide collosol, and then aluminium sulfate and aluminium hydroxide collosol conduct polymerization reaction in an original solution system to produce polymerized aluminium sulfate, so that the accelerating agent solution has higher aluminium ion content and liquid stability; the low-alkaline liquid accelerating agent is prepared by aluminium sulfate, sodium aluminate and stabilizing agent; and the mass percentage of the components are as follows: 40 to 60 percent of aluminium sulfate, 6 to12 percent of sodium aluminate, 0 to 0.2 percent of stabilizing agent, and the balance of water. The invention has the following positive effects to sprayed concrete: initial set of common cement can be realized in five minutes and final set of the common cement can be realized in eight minutes under lower doping amount; the 1d strength of cement mortar can reach more than 12MPa, and the 28d compression strength ratio of the cement mortar is more than 100 percent; and the invention has good adaptability to cement of different varieties.

Nanogold solution and method for detecting Co<2+> by using same

The invention discloses a nanogold solution and a method for detecting Co<2+> by using the same. The water soluble functional nanogold solution is prepared by using a gold salt as the resource of gold nanoparticles, a quaternary ammonium salt as a surfactant, ion clusters containing sulfur elements and carbon oxygen groups (O=C=O) as ligands, sodium borohydride, potassium borohydride or ascorbic acid as a reducing agent, and deionized water as a synthesis medium and by modifying the surface of the nanogold with the ion clusters containing sulfur elements and carbon oxygen groups (O=C=O) under the action of gold-sulfur bonds (Au-S). The nanogold solution has high speed, selectivity, sensitivity and practicality for detection of trace amount of Co<2+> in the water solution system, and therefore can be used in combination of a colorimetric process for detecting trace amount of Co<2+>; the detection concentration is lower than 8.5*10<-7>M; the detection threshold value may reach 5*10<-10>M; the detection speed is high, the selectivity is high, the cost is low, and the carrying is convenient; and the detection method has a bright application prospect in fields of environmental science, detection chemistry and analysis chemistry, and the like.

Ion liquid electrolytic solution and secondary lithium battery containing electrolytic solution

The invention discloses an ion liquid electrolytic solution and a secondary lithium battery containing the electrolytic solution. The ion liquid electrolytic solution is characterized in that a lithium secondary battery non-water electrolytic solution comprises an ion liquid containing electrolyte salt and a nitrile group functional group, a hydrogen fluorine ether, a non-water organic solvent and an addition agent; the ion liquid of the nitrile group functional group used by the electrolytic solution is beneficial to improving the security of the lithium secondary battery, the content of the ion liquid is more than 40%, and the electrolytic solution has the obvious flame retardant effect; the hydrogen fluorine ether is contributed to improving the wettability of the electrolytic solution containing the ion liquid on an electrode material and a diaphragm, and meanwhile, electrochemistry properties such as a cycle property, a high temperature keeping property of the lithium secondary battery are obviously improved; and an electrolytic solution system uses the ion liquid of the nitrile group functional group and the hydrogen fluorine ether in a composite manner, the combination properties such as the cycle property, the safety property and high temperature characteristics of the lithium secondary battery are obviously improved.

Accelerated corrosion test device capable of simulating marine atmospheric environment

The invention discloses an accelerated corrosion test device capable of simulating a marine atmospheric environment, which relates to the technical field of material science experiments. A solution system is implemented through storing a sodium chloride solution with a required concentration in a solution storage tank, and conveying the solution to a nozzle along a solution conveying duct through a solution conveying pump. Purified compressed air obtained by using an air compressor is fed into the nozzle along a gas duct, and then purified compressed air carrying the solution is injected out of the nozzle and forms a salt-spray environment in a main box body of an accelerated corrosion box. An ultraviolet light system is implemented through that strip-tube-shaped ultraviolet light tubes respectively provided with a protective cover are parallelly arranged on a horizontal plane (close to an inlet) of a main body of the corrosion box at equal intervals so as to keep that the intensities of ultraviolet light at each part of the same horizontal plane are same. The intensity of the ultraviolet light can be measured through a light intensity meter. According to the device, after the ultraviolet light system is installed, the erosion effect of the ultraviolet light on materials and the synergy effect of salt-spray and the ultraviolet light on the reliability of materials in the marine atmospheric environment can be truly simulated.

Method for detecting single molecule of single silicon nanowire in real time based on surface enhanced raman scattering effect

The invention discloses a method for detecting a single molecule of a single silicon nanowire in real time based on a surface enhanced raman scattering (SERS) effect. The method comprises the following steps of: 1) dispersing the silicon nanowire of which a surface oxide layer is removed in aqueous solution of cetyltrimethyl ammonium bromide (CTAB), adding metal silver ion-containing solution into dispersion of the silicon nanowire under stirring, reacting for a period of time, centrifuging a product and collecting precipitates, and dispersing the obtained silicon nanowire on which the surface is loaded with silver particles in ethanol; and 2) dropwise adding ethanol dispersion of the silicon nanowire into a groove of a glass slide with the groove, adding aqueous solution of molecules to be tested into the groove after ethanol is volatilized, sealing the groove by using cover glass, irradiating the silicon nanowire at the groove by using laser of a certain wavelength, and collecting araman signal to realize real-time detection of the single molecule. The method is simple and fast and has a mild reaction condition, the prepared material has stable performance and higher SERS response, the detection of the single module in a solution system is realized, and a good platform is provided for researching the reaction of the single module in the solution system.

Etching solution for copper-molybdenum alloy film

InactiveCN107151795AStable pHMeet high precision processing requirementsEtchingAlloy
The invention relates to an etching solution for a copper-molybdenum alloy film. The pH value of the etching solution is 1-2. The etching solution comprises, by mass, 1%-5% of hydrogen peroxide, 0.1%-10% of inorganic acid, 0.5%-10% of sulfate, 0.5%-15% of inorganic ammonia salt buffering agents, 0.01%-10% of alcohol amine pH modifiers, 0.1%-10% of hydrogen peroxide stabilizers, 0.1%-5% of metal ion chelating agents, 0.01%-5% of metal inhibiters, and the balance deionized water. According to the etching solution for the copper-molybdenum alloy film, a small quantity of hydrogen peroxide is added and assisted with the metal inhibiters and inorganic acid, and the substances such as the sulfate and the inorganic ammonia salt buffering agents are added, so that the change of the pH value of an etching solution system is kept within +0.3 all the time in the etching process; the stability of the pH value of the etching solution system in the etching process can be kept, and nonuniform etching caused by an excessively-low pH value can be avoided; and in the process that the content of copper ions changes from 0 ppm to 1000 ppm, the etching speed is not changed, the etching CD and the slope angle are basically unchanged, etching residues are avoided, and the requirement of customers for high-precision machining is met.

Direct vertical deposition method of zinc oxide nanometer rod array on titanium dioxide film

The invention discloses a direct vertical deposition method of a zinc oxide nanometer rod array on a titanium dioxide film, wherein the zinc oxide is an important inorganic semiconductor function material and arouses wide public concern due to the unique performances of catalysis, electricity, optics and photochemistry, and the like. Persons are interested in the control synthesis of one-dimensional zinc oxide due to the remarkable laser behavior of the one-dimensional zinc oxide. The method comprises the steps of: preparing titanium dioxide sol under room temperature; preprocessing; adhering with one layer of titanium dioxide sol on a preprocessed glass or an electric glass ITO by means of dipping and pulling; preprocessing titanium dioxide grains before drying and spinning; fixing a layer of titanium dioxide grains prepared by means of a sol-hydrothermal method on the substrate by means of spinning; drying; roasting to obtain the nanometer zinc oxide film; putting the zinc oxide film into a sealed water solution system of zinc salt and organic amine; reacting for 12-72 h under the reaction temperature of 45-90 DEG C; taking out; washing with secondary water; and drying. The invention relates to a nanometer material.

Double-ion response type SERS (Surface Enhanced Raman Scattering) probe and preparation method thereof

InactiveCN103616367AEasy to separatePlay a role in purifying the environmentRaman scatteringNanotechnologyResponse typeSilicon dioxide
The invention discloses a double-ion response type SERS (Surface Enhanced Raman Scattering) probe and a preparation method thereof. The probe comprises two nano particles with independent core-shell structures, wherein a carrier nano particle comprises four layers of core-shell structures; the four layers of core-shell structures are as follows: the innermost layer is made of Fe3O4 magnetic nano balls, a layer of silicon dioxide is coated outside the innermost layer, the second-outer layer is a gold foil shell layer, and the outermost layer is an oligonucleotide coating layer; an object nano particle comprises two layers of core-shell structure; the two layers of core-shell structure are as follows: the inner core is made of Raman molecule marked gold nano-balls, and a shell is an oligonucleotide coating layer. Due to the adoption of a specific base sequence in the oligonucleotide coating layer, the identify and SERS trace detection on two metal ions, namely silver/mercury, in an environment solution can be performed at the same time; furthermore, under the action of an external magnetic field, the probe and the obtained silver/mercury ions can be rapidly separated from an initial environment solution system, and therefore, the function of purifying the environment is realized.

Seawater electric desalting apparatus and method

The invention provides a low-energy consumption seawater electric desalter and a method capable of realizing energy recovery. The electric desalter comprises an electric collection cathode, an active carbon cathode, a permeable separation medium, an active carbon anode and an electric collection anode. The invention is characterized in that the absorption of double electric layers of active carbon electrodes is used to form the structural property of super capacitance. In charging and desalting processes, ions or granules with charges can be absorbed and concentrated on the active carbon electrodes in the electric desalter, and the inner chamber of the device can recover purified water or fresh water; in discharging and electrode regenerating processes, the ions or the granules with charges absorbed on the active carbon electrodes are desorbed and return to a solution system, and the achieved thick saltwater can be used for recovering the salt in brackish water or seawater. The electric desalter can be used for desalting seawater or brackish water or the purification and the metal recovery of the waste water containing ions. The invention can desalt the seawater or the brackish water to the fresh water with the Cl concentration being less than or equal to 30 ppm, and the running cost for processing the water is less than or equal to 1 yuan per ton.

Clean effervescent tablet with pesticide residue and bacteria removing effects and preparation method of clean effervescent tablet

The invention relates to the technical field of daily chemical products and in particular to a clean effervescent tablet with pesticide residue and bacteria removing effects and a preparation method of the clean effervescent tablet. According to the preparation method disclosed by the invention, a specific surfactant is combined with a special wet granulation process, so that the feasibility of the production process is ensured. The clean effervescent tablet has the advantages that no dryness or stickness is caused; the adhesion of foam to the surface of a disintegrating agent can be inhibited, the disintegration speed is increased and an effervescent effect is quickly exerted; in the disintegration and dispersion process, the efficient alkaline supplementing effect on a solution system is realized by synergizing a bacteria remover with an alkali-source supplement, fruit wax and pesticide left on vegetables and fruits can be effectively removed, and the aims of effectively removing escherichia coli and staphylococcus aureus are achieved. By using the alkali-source supplement with a special structural form, metal ions in the water body and on the surface of the vegetables and the fruits can be effectively chelated, the effects of softening the water body and chelating the metal ions are realized, and the deposition of calcium scales on the surfaces of cleaned materials is prevented; in addition, a variety of calcium scales or stains are dispersed, so that secondary pollution to tableware, the fruits and the vegetables caused by deposition is prevented.
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