17 results about "Molar concentration" patented technology

The present solution provides a hybrid coagulant based on aluminum-iron silicate, where the molar concentration of silicon is in the range of 0.1 to 0.5 mol∙l-1, the molar ratio of the sum of aluminum and iron to silicon is in the range of 1:0.5 to 1:1.5, the molar ratio of aluminum to iron is in the range of 0.5:1 to 5:1, and a method of its preparation by mixing hydrated aluminum sulfate, hydrated iron sulfate and an acidic solution of silicon dioxide.

The present application relates to a kind of soil salt data correction method, device, storage medium and electronic equipment, comprising: calculating soil parameter based on the soil salt data obtained by soil sample test;Reliable sample meeting the condition of soil parameter is selected, first prediction model based on the total charge equivalent predicted by extract solution conductivity is constructed, and second prediction model based on the cation charge equivalent to predict extract solution conductivity;Total charge equivalent prediction value of deviating sample is obtained using first prediction model;The salt type of deviating sample and maximum allowable absolute deviation are determined;Based on soil salt data and total charge equivalent prediction value, the soil salt prediction content of deviating sample is obtained, based on salt content and soil salt prediction content, the salt deviation of deviating sample is obtained;Determine ion adjustment strategy based on soil parameter, adjust the molar concentration in the soil salt data of deviating sample according to ion adjustment strategy, second prediction model.It can improve the reliability of soil salt data.

This invention discloses a water-based treatment agent for improving the corrosion resistance of carbon steel surfaces, comprising the following active ingredients: a compound containing zincate ions, wherein the molar concentration of zincate ions is 0.02–0.6 mol / L; a nonionic polyol surfactant, the content of which is 0.05–0.8 mol / L based on the molar concentration of hydroxyl groups; a metal ion compound, wherein the molar concentration of metal ions is 0.003–0.1 mol / L; the standard electrode potential of the metal ions is in the range of -0.28V to +0.42V; and an inorganic alkali, the content of which is 0.001–0.1 mol / L based on the molar concentration of hydroxide ions. This invention also discloses a carbon steel substrate comprising a carbon steel substrate and a nanoscale coating formed by coating or depositing the aforementioned water-based treatment agent on the surface of the carbon steel substrate.

This invention discloses a method for calculating CO2 stockpiles in abandoned oil reservoirs based on multi-component phase equilibrium analysis, relating to the field of oil and gas field development technology. The invention first calculates the molar concentrations of non-CO2 native hydrocarbon components in the reservoir before and after CO2 injection. Then, it presets an initial value for the CO2 concentration in the reservoir mixture, determines the molar fraction of each component in the mixture under the initial state, and uses the Peng-Robinson equation of state to perform reservoir phase stability analysis under the final stockpiling pressure. This determines the molar fraction of each component in the mixture, obtains the distribution of CO2 and hydrocarbon components in the gas and liquid phases, calculates the true concentration of CO2 in the reservoir mixture, determines the solubility of CO2 in the aqueous phase, and obtains the total CO2 stockpiles in the reservoir. This invention fully considers the influence of porosity elasticity changes and complex component phase states on CO2 stockpiles in the reservoir, improving the accuracy of CO2 stockpil calculation results.

The application relates to the technical field of sapphire processing, and discloses a sapphire etching liquid as well as a preparation method and application thereof. The etching liquid contains alkali metal ions, NO3 ‑ , OH ‑ , transition metal ions; the transition metal ions are provided by inorganic salts containing transition metal elements, and the ion valence of the transition metal elements is 3 or more; and the mass molar concentration of the transition metal ions in the etching liquid is 0.02-0.08 mol / kg. The sapphire etching liquid provided by the application can significantly improve the overall uniformity and consistency of an etching surface under the premise of ensuring etching efficiency, and can realize high-quality micro-morphology control.

The application provides an alcohol-free and proteinase K-free nucleic acid extraction reagent and a nucleic acid rapid extraction method, and relates to the technical field of molecules.The extraction reagent comprises a lysis solution, and the lysis solution comprises guanidine isothiocyanate with a molar concentration of 2-4 M, a thiol reducing agent with a volume fraction of 1%-5% v / v, sodium erythorbate with a mass fraction of 0.02%-0.5% w / v and a surfactant with a mass fraction of 1%-10% w / v; and the lysis solution has a pH of 7-8.5.The lysis solution can be stably stored at room temperature for a long time; in application, only one washing solution is matched, one-step washing is performed, the complexity of nucleic acid extraction can be reduced, and the extraction time is shortened; and the lysis solution does not contain alcohol reagents, and there is no need to dry before nucleic acid elution.The technical problems that, in the prior art, the lysis solution has complex components, proteinase K needs to be matched, many impurities are introduced, multiple washing is needed, the steps are complicated, and a long time is consumed are solved.

This invention discloses a water-based treatment agent for improving the zirconization properties of high-strength pickled steel, which contains the following active ingredients: a nitrate ion compound, wherein the molar concentration of nitrate ions is 0.02-0.6 mol / L; a metal ion compound, wherein the metal ion is at least one of Fe ions, K ions, Na ions, Cu ions, and Zn ions, and the molar concentration of the metal ion is 0.004-0.03 mol / L; an organic acid, wherein the molar concentration is 0.01-0.5 mol / L; and a surfactant, wherein the molar concentration is 0.002-0.03 mol / L.

This invention discloses a method for predicting compound ionization efficiency based on context correction. The method includes extracting the mass concentration calibration slope of the target compound and converting it into a logarithmic slope under a molar concentration calibrator, which serves as the true ionization efficiency value. A stable feature set is constructed based on the molecular descriptors of the target compounds, with each sample representing a stable feature vector composed of stable descriptors for one target compound. The stable feature vectors are further nonlinearly corrected to obtain corrected feature vectors, and the corrected feature vectors of all target compounds are aggregated to construct a corrected feature set. Using the corrected feature set as input features and the true ionization efficiency as the label, a CatBoost regression model is trained using the corrected feature set. The trained CatBoost regression model is then used to predict the ionization efficiency of new compounds. This invention enables accurate and stable prediction of compound ionization efficiency.

A fiber is provided that includes a polymer composition. The polymer composition includes a liquid crystalline polymer that contains specific monomer components within a particular molar concentration. The polymer composition has a melting temperature of about 300°C to about 400°C as determined according to ISO 11357-3:2018.

An objection is to provide a method for characterizing a molecule delivery particle, the method comprising determining a molar concentration thereof.The method for characterizing a molecule delivery particle, the method comprising subjecting a molecule delivery particle comprising a first particle and a second particle to particle separation with optical measurement to determine an increment in refractive index of each of the first particle and the second particle; and determining a molar concentration of each of the first particle and the second particle based on the increment in refractive index, a molecular weight, and a specific refractive index increment of each of the first particle and the second particle.

This invention discloses a method for detecting perfluorinated and polyfluoroalkyl substances in traditional Chinese medicine (TCM) based on the total oxidizable precursor determination method, comprising the following steps: pulverizing the TCM sample and extracting it with an alkaline methanol solution; subjecting the extract to dual purification via graphitized carbon black dispersion and weak anion exchange solid-phase extraction; dividing the purified solution into two equal parts, A and B; part A is used directly for analysis, while part B is oxidized using a stepwise oxidation strategy; performing liquid chromatography-tandem mass spectrometry (LC-MS / MS) analysis on part A and the oxidized part B respectively to determine the concentrations of perfluoroalkyl carboxylic acids and / or perfluoroalkyl sulfonic acids; and calculating the content of perfluorinated and polyfluoroalkyl precursors in the TCM using the molar concentration difference. The detection method of this invention, through a stepwise oxidation strategy and GCB+WAX dual purification, achieves accurate quantification of perfluorinated and polyfluoroalkyl precursors in TCM, overcoming the problem of precursor underestimation caused by matrix interference and incomplete oxidation in existing technologies, thus improving the accuracy and reliability of detection.

This invention discloses a method, apparatus, electronic device, and storage medium for determining the homogenization pressure of multi-component inclusions. The method includes processing key parameters of the fluid inclusion to be analyzed—gas phase volume fraction, salt component molar concentration, initial molar fraction of each component in the gas phase, initial value of the pressure range, and experimentally determined homogenization temperature—using a pre-constructed multi-component phase equilibrium model to obtain multi-component fluid characteristics. These characteristics are used to calculate the total molar content of gas components and the total molar content of water components per unit volume of the inclusion. The overall fluid density is calculated based on the gas phase volume fraction, liquid phase density, and gas phase density. The solubility of a reference gas at the minimum homogenization temperature is calculated based on the total molar content of gas components and the total molar content of water components per unit volume of the inclusion. The pressure range is dynamically adjusted based on the reference gas solubility and the test gas solubility until the calculation converges, yielding the target homogenization pressure data. This improves the accuracy of the target homogenization pressure data.

The invention relates to a liquid composition (10) for coating applications, said liquid composition (10) at least comprising: based on the total mass of the liquid composition (10), at least 10 mass-% water; one or more metals, said one or more metals at least comprising a first metal that is capable of adopting oxidation state +4; and at least one nitrogen-containing cation, wherein the ratio of the molar concentration of said nitrogen-containing cation in the liquid composition (10) to the molar concentration of the one or more metals in the liquid composition (10) is at least 0.05 : 1.00. The invention also relates to a method of producing liquid compositions for coating applications, to a method of coating a workpiece (12) and to an electrochemical cell.

The application belongs to the technical field of palladium recovery, and particularly relates to an amino-substituted modified thioureido ionic liquid and a preparation method and application thereof, and a liquid-liquid extraction method for Pd(II). The application provides an amino-substituted modified thioureido ionic liquid, the chemical formula of the ionic liquid is shown as formula 1, the structure is that a terminal nitrogen atom of S-n-decyl thioureido cation carries a substituent group, the substituent group is selected from an amino group or a guanidino group, and an anion is bis(trifluoromethylsulfonyl)imide. By introducing an amino group or a guanidino group on a thioureido group, the ionic liquid [TSCC10][Tf2N] and [GTUC10][Tf2N] provided by the application significantly improves extraction kinetics, and can reach extraction equilibrium within 2 hours; in an equimolar concentration mixed metal ion solution and an actual waste palladium catalyst leaching solution, the extraction rate of Pd(II) is as high as 99.93% or more, while the extraction rate of coexisting base metal ions is less than 13.42%, and excellent selectivity is exhibited; the saturated extraction capacities are 212 mg / g and 195 mg / g, respectively. After multiple extraction-stripping-regeneration cycles, the ionic liquid still maintains good extraction activity. In summary, the solvent-free extraction process provided by the application is simple in operation, environmentally friendly, fast in extraction rate, high in selectivity, has a good industrial application prospect, and has significant economic and social benefits.

This invention provides a method for improving the enzymatic hydrolysis efficiency of corn straw using a potassium ferrate composite solution, comprising the following steps: providing a potassium ferrate composite solution, wherein Fe... 6+ The molar concentration was 40.2 mmol / L, ClO ‑ The molar concentration was 704.5 mmol / L, OH ‑ The molar concentration was 2500.1 mmol / L. Corn stalk powder was selected, and its solid-liquid ratio with the potassium ferrate composite solution was 10%. After mixing, the mixture was subjected to isothermal shaking treatment at a temperature of 4-85℃ for 3-48 hours. This invention provides a method for improving the enzymatic hydrolysis efficiency of corn stalks using a potassium ferrate composite solution. This method not only reuses the potassium ferrate composite solution but also disrupts the surface structure of the stalks, removing lignin and some hemicellulose, thus exposing more cellulose and improving the enzymatic hydrolysis efficiency.

The application relates to the field of glass etching, and discloses a glass etching activation solution, a preparation method thereof and a glass alkali etching method. + , Li + , an amide compound; the H + is provided by an organic acid with a carbon content greater than or equal to 6; the molar concentration of the H + in the activation solution is 0.006-0.04 mol / L, the molar concentration of the Li + is 0.07-0.3 mol / L, and the mass content of the amide compound is 0.2-1 wt%. The glass etching activation solution provided by the application can improve the glass etching rate, inhibit the generation and expansion of micro cracks, and guarantee the mechanical properties and long-term reliability of the glass.

This application discloses an image generation method, an image acquisition method, and related apparatus for improving image quality. The image generation method of this application is applied to the control module of a computed tomography (CT) system. The system also includes a scanning component and a syringe component. The method includes: acquiring the molar concentration and molality of a specified gadolinium contrast agent, and calculating a corresponding target dose based on the molar concentration, molality, and patient weight; sending an injection command including the target dose to the syringe component, causing the syringe component to first inject a preset dose of saline solution into the patient, and then inject the target dose of the specified gadolinium contrast agent; if the concentration of the gadolinium contrast agent in the patient's coronary artery exceeds a preset concentration threshold, sending a control command to the scanning component, causing the scanning component to scan the patient to obtain CT data; receiving the CT data sent by the scanning component, and generating a target image based on the CT data.