74 results about "Activity coefficient" patented technology

A method of monitoring battery capacity comprises determining a starting capacity of a battery; determining an activity coefficient for a device connected to the battery; determining a voltage and current profile for the battery using the starting capacity; determining a voltage and current operating point for the device using the activity value for the device; and determining an updated capacity of the battery using the voltage and current profile for the battery and the voltage and current operating point for the device.

The present invention provides duplex stainless steel superior in corrosion resistance in a chloride environment and impact properties suitable as a material for pumps for seawater desalination plants, facilities and equipment, and materials for chemical tanks, that is, duplex stainless steel characterized by containing, by mass %, C: 0.06% or less, Si: 0.05 to 3.0%, Mn: 0.1 to 6.0%, P: 0.05% or less, S: 0.010% or less, Ni: 1.0 to 10.0%, Cr: 18 to 30%, Mo: 5.0% or less, Cu: 3.0% or less, N: 0.10 to 0.40%, Al: 0.001 to 0.08% or less, Ti: 0.003 to 0.05%, Mg: 0.0001 to 0.0030%, and O: 0.010% or less, having a product of an activity coefficient f_N of N, Ti content, and N content f_N×Ti×N of 0.00004%² or more, and having a product of Ti content and N content Ti×N of 0.008%² or less.

The invention discloses a method for preparing a seedling cultivation medium for mechanically-transplanted rice from decomposed corn straw. The method includes using corn straw wastes and dry cattle manure as the raw materials, subjecting the raw materials to fermentation by various beneficial microorganisms for 40-60 days, and proportionally mixing a obtained microbial organic fertilizer with perlite, vermiculite, peat, a water-retaining agent and biocontrol bacteria to obtain the seedling cultivation medium. The method has the advantages that the prepared seedling cultivation medium is low in unit weight, convenient to carry, good in water retaining performance, rich in nutritional substances, low in cost, highly compatible with the mechanical rice transplanting technology and capable of reducing irrigation times, water consumption and rice field soil consumption, allowing seedlings to be neat and high in root activity coefficient and avoiding the risks of environment pollution caused by inappropriate treatment of the corn straw, and does not need extra topdressing in the whole seedling cultivation process.

The invention discloses a technological method for producing inorganic fibers from red mud and belongs to the field of comprehensive utilization of the red mud. According to the technological method, a curing agent and an acidity coefficient modifier are added to the red mud, a mixture and coke are molten at the high temperature, element resources including Si, Ca, Fe, Al, Na and Mg in the red mud, the curing agent and the acidity coefficient modifier are sufficiently utilized, the red mud is taken as a main material for production of the inorganic fibers, the ratio of the dosage of the red mud can be higher than 70%, red mud pollution is effectively treated, the produced inorganic fibers reach the level of rock wool, and economic, social and environmental benefits are remarkable. The technology is simple, the production cost is low, and large-scale production of the red mud for comprehensive utilization can be realized.

A system classifies a compressed image or predicts likelihood values associated with a compressed image. The system partially decompresses compressed JPEG image data to obtain blocks of discrete cosine transform (DCT) coefficients that represent the image. The system may apply various transform functions to the individual blocks of DCT coefficients to resize the blocks so that they may be input together into a neural network for analysis. Weights of the neural network may be trained to accept transformed blocks of DCT coefficients which may be less computationally intensive than accepting raw image data as input.

The invention discloses a method for removing titanium in molten iron and belongs to the field of metallurgy continuous casting. The method comprises the following steps: adding a titanium removal agent into a torpedo ladle before tapping in ironworks, and tapping, so that the titanium removal agent and the molten iron are reacted completely, and the titanium removal product floats upwards; adding the titanium removal agent into a ladle in front of a torpedo ladle station in the ironworks, carrying out oxidizing reaction between the titanium removal agent and the molten iron by virtue of steel flow impact during tapping, and removing the titanium; removing titanium removal residues in front of a sulfur removal station before sulfur removal, and performing molten iron sulfur removal and converter blowing. According to the method, the titanium removal agent can be respectively added into the torpedo ladle and the ladle, and the addition amount of the titanium removal agent is adjusted according to the temperature of the molten iron and alkalinity of molten iron slag, so that the titanium removal efficiency is guaranteed. In addition, the titanium removal is influenced due to an activity coefficient of TiO2 in the slag, and the effect of removing titanium in the molten iron can be effectively stabilized.

The invention discloses a synergistic additive of natural-gas as welding and cutting gas, and relates to the technical field of the synergistic additives of the natural-gas as the welding and cutting gas, wherein a preparation process of the synergistic additive comprises the following steps: uniformly mixing ethanol with petroleum ether for later use; adding tetrahydrofuran into a reaction kettle, adding bis(cyclopentadienyl) iron and a liquid cerium-aluminum composite rare earth catalyst into the reaction kettle to stir, and mixing with the mixed solution after dissolving completely; and standing for 4 hours and discharging clear liquid through a liquid discharge valve at the side of the reaction kettle, and filling the clear liquid into a package bucket to obtain the synergistic additive. The synergistic additive combines a catalytic activation principle of the cerium-aluminum composite rare earth and special organic chemical materials to play roles of increasing the temperature and assisting the combustion in the natural gas, resisting against explosion and increasing the flame temperature of the combustion of the natural gas in oxygen. In addition, the synergistic additive can be gasified under certain pressure and mixed with the natural gas to increase the activity coefficient index of the natural gas and increase the temperature of the combustion of the natural gas in oxygen to about 3430 DEG C, which is at an advanced level in the industry. The synergistic additive can completely replace acetylene in cutting, welding, baking and flame spraying functions.

The invention relates to an integrated converter with three-phase power factor correction, wherein it is formed by two power factor correction circuits; said converter, based on one three-phase alternative-current switches two direct-current/direct-current converters, to transform said three-phase alternative-current into one direct-current to be output, with high circuit utilization and less elements.

Substrate carrier having multiple emissivity coefficients for thin film processing and more particularly for support of a substrate during a deposition process epitaxially growing a film on the substrate. A front side of the carrier has a first carrier surface upon which the substrate is to be disposed, the first carrier surface having a first emissivity coefficient different than a second emissivity coefficient of a second carrier surface adjacent to the first carrier surface. Selection of the second emissivity coefficient independent of the first emissivity coefficient may modify an amount of energy radiated from the second carrier surface during processing of the substrate. In one embodiment, the second carrier surface has a second emissivity coefficient which is lower than the first emissivity coefficient to reduce heat loss from the carrier surface while maintaining high efficiency energy transfer between the carrier and a substrate.

The present application relates to an application function recommendation method and system, a computer device and a storage medium. The method comprises the following steps of acquiring the user operation data of a function module in an application program, and calculating a user operation score of the function module according to the user operation data; acquiring module active data of the function module, calculating module thermal coefficient of the function module according to the module active data; acquiring a current display position of the functional module, and searching for a spaceoccupying coefficient corresponding to the current display position; according to the user operation score, the module thermal coefficient and the occupancy coefficient, obtaining the activity coefficient of the functional module, sorting the function modules in the application program according to the activity coefficient, and generating the function recommendation interface according to the sorted results. The method can improve the utilization rate of the application program interface.

An apparatus and computerized method optimizes or generates a sigma profile for a molecule by receiving a sigma profile for the molecule, calculating an activity coefficient for the molecule using the sigma profile for the molecule, calculating a solubility for the molecule using the activity coefficient for the molecule, optimizing or adjusting the sigma profile for the molecule by adjusting the sigma profile using an objective function and one or more constraints, providing the sigma profile to an output device communicably coupled to a processor.

The invention discloses a method for preparing a machine-transplanted rice seedling raising substrate by taking a rice straw fermentation product as a raw material. According to the preparation method, rice straw wastes are used as a raw material and are fermented by using a variety of beneficial microorganisms for 40-60 days to obtain a microbial organic fertilizer which is used for preparing the rice seedling raising substrate together with perlite, vermiculite, peat, a water retention agent and biocontrol bacteria in proportion, and the substrate is small in volume weight, is convenient to carry, is good in water holding capacity to reduce the irrigation frequency and reduce the water consumption, and has rich nutrient substances to avoid additional fertilizer in the whole seedling raising period; rice seedlings come out neatly and are high in root system activity coefficient; and the substrate is low in cost and strong in compatibility with a machine-transplanting technology, and can not only reduce the usage amount of paddy field soil, but also avoid the risk of causing pollution to the environment due to improper treatment of straws.

The selection of additives to improve the solubility of blowing agents may be facilitated by using a method that involves determining and comparing the activity coefficients of prospective additives to the activity coefficients of candidate blowing agents in a given base polymer for producing a polymeric foam article. The method for the selection of an additive may comprise selecting a representative compound for the base polymer and determining a first activity coefficient for a blowing agent in the representative compound. Also selected are several candidate additives, each having a different functional group, and determining a second activity coefficient for the blowing agent in each of the candidate additives. Among the candidate additives is selected the additive, wherein the second activity coefficient is lower than the first activity coefficient. The method may be incorporated into a process for forming polymeric foams and the manufacture of a polymeric foam.

In the present invention the NonRandom Two-Liquid segment activity coefficient model system of the parent application is extended for computation of ionic activity coefficients and solubilities of electrolytes, organic and inorganic, in common solvents and solvent mixtures. The invention method and system may be applied to the chemical and/or pharmaceutical design process. In addition to the three types of molecular parameters defined for organic nonelectrolytes, i.e., hydrophobicity X, polarity Y, and hydrophilicity Z, an electrolyte parameter, E, is introduced to characterize both local and long-range ion-ion and ion-molecule interactions attributed to ionized segments of electrolytes. Successful representations of mean ionic activity coefficients and solubilities of electrolytes, inorganic and organic, in aqueous and nonaqueous solvents are presented.

The invention relates to a method for controlling endpoint temperature and endpoint carbon of an argon oxygen decarburization converter. An endpoint carbon and endpoint temperature mathematic model is constructed to achieve the best control effect. The model constructing steps comprise: (a) chemical components of C, Mn, Si, Cr, Ni and P of molten steel in the converter and the initial furnace condition temperature are read from basic automatic level; (b) according to data and mathematic models, a least square method is used for working out reaction rate constant Ki, activity coefficient Fi of components in liquid steel, mass transfer coefficient Ni of the components in the molten steel during the slag liquid phase reaction and equilibrium constants Kco, Kcr2o3 and Ksio2, and values worked out according to working conditions are written into a database during the automation of the production process; (c) the direct oxidation heat releasing in unit time of a reaction surface is worked out according to the models; (d) the temperature change of the molten steel and the concentration change of the components in the molten steel within the time step of delta t are worked out according to the heat balance in the converter. The method of the controlling endpoint temperature and the endpoint carbon of the argon oxygen decarburization converter prolongs the service life of the converter, reduces blow losses of chromium and achieves the function of removing carbon to protect chromium.

The invention relates to a method for accurately testing the content of salt in seawater desalination liquid based on ion concentration and equipment special for the method. By the method, an activity coefficient is corrected, measuring accuracy is improved, and the application range is expanded. Values of standard potential E<0> and slope S can be obtained through correction, a functional relation between the concentration of sodium ions in the seawater desalination liquid and the electromotive force of NaCl in the seawater desalination liquid is deduced according to a Nernst equation. During use, two indicating electrodes, namely a chloride ion selective electrode and a sodium ion glass electrode are used as a positive electrode and a negative electrode and are connected with an instrument to form a primary battery, the electromotive force of the seawater desalination liquid with unknown concentration is measured and substituted into the functional relation, and the display instrument can directly display the accurate concentration of the sodium ions in the seawater desalination liquid. The method is suitable for measuring low concentration in a narrow range, and is also suitable for accurately measuring the content of the salt in the seawater desalination liquid with high salt concentration, the accuracy of the method is higher than that of the conventional method, and a standard buffer solution is not required to be added in a linear range.

A finite impulse response (FIR) filter having a differential output and capable of having negative coefficients, and a method of designing the filter, is disclosed. In contrast to the prior art, in which two output signals requires the use of two identical sets of impedance devices corresponding to the Fourier coefficients that create the desired response of the filter, the described method and system uses only a single set of impedance devices, and thus approximately one-half of the number of impedance devices used in the prior art. This is accomplished by appropriately selecting which resistors contribute to which output, so that a differential output may be obtained that is substantially the same as if impedance devices corresponding to all of the coefficients were used for each signal.

The invention relates to a full-automatic B ultrasound pregnant woman detection system and a detection method thereof. A full-automatic detection platform is arranged on one side of a B ultrasound machine, two sliding ports are formed in the full-automatic detection platform, a pregnant woman lying platform is arranged on the inner sides of the sliding ports, and a full-automatic detection device is arranged among the pregnant woman lying platform and the sliding ports and connected with a controller arranged in the B ultrasound machine through a lead. A pregnant woman is all-dimensionally detected by transverse, longitudinal and circumferential movement of the system, a limit switch is uniquely designed, safety of overall detection is realized, safety coefficient and overall running stability coefficient are high, all-dimensional full-automatic detection is realized, the system is stable and efficient, two hands of a doctor can be liberated, and more accurate image capture is facilitated.

Systems and methods for adaptively filtering DCT coefficients in a video encoder. The present invention relates to a system and method that provides selective filtering of discrete cosine transform (DCT) coefficients, and the filtering of the DCT coefficients is performed in the frequency domain instead of the dense pixel domain (time domain). This DCT filtering is performed in the DCT encoding loop, rather than at a processing port independent of the encoding loop. This DCT filtering is beneficial in reducing the number of bits used to encode the image, it preserves buffer-compliant buffer model occupancy levels, and improves image quality by saving bits more than conventional techniques, such as quantization parameter (QP) values Increase.

The invention discloses a preparation method of a mechanical transplanting rice seedling raising substrate, and especially relates to applications of a biological agent. According to the preparation method, straw waste is taken as a raw material, fermentation with a plurality of beneficial microorganisms is carried out for 40 to 60 days, an obtained microbial organic fertilizer is mixed with perlite, vermiculite, peat, and a water-retaining agent at a certain ratio so as to prepare a rice seedling raising substrate, and the biological agent phomopsis HQ285146 prepared from corn flour is added. The obtained mechanical transplanting rice seedling raising substrate is light in volume-weight, is convenient to carry, is excellent in water-retaining property, is capable of reducing irrigation times, saving water, and is abundant in nutrients; no extra topdressing is needed in the whole rice seedling raising process; obtain seedlings are uniform; root system activity coefficient is high; cost is low; compatibility with mechanical transplanting technology is high; using amount of paddy soil is reduced; and environment pollution caused by improper treatment of straw is avoided.

A metal welding-cutting gas is prepared from catalyst (Pb-Sb-Sn alloy, Mn-Nd-Fe alloy, or copper oxide), toluene, xylene, petroleum ether, H2O2, and mother liquid through proportionally and sequentially mixing. Its advantages are high temp (3100-3400 deg.C), low residual liquid, and no environmental pollution.

The invention discloses a simplified weighted repeat pseudo-median filtering method with negative coefficients. The method comprises the following steps: taking the frequency response characteristics of an approximation same-order finite impulse response (FIR) filter as an objective, designing weighting coefficients containing negative numbers for weighted pseudo-median computation of filtering window data by an MALLOWS comprehensive method, adjusting the window data by the weighting coefficients; simultaneously, computing weighting coefficients based on the slopes of a group of special structures designed for the filter, computing the overall slope of the window data repeatedly by the weighted pseudo median, carrying out linear transformation on the window data by the slope; and finally carrying out weighted computation on the transformed data by the pseudo-median weighting coefficients to obtain the output value of weighted repeat pseudo-median filtering. The method realizes a better frequency selection characteristic than that of the existing negative coefficient weighted median or pseudo-median filtering method, and simplifies computation in the algorithm to meet the requirement of systems with finite resources, such as a wireless sensor and the like for low power consumption.

The invention relates to a polypropylene fiber-reinforced alkali slag cementing material. When thicker steel fibers are subjected to tensile test, the phenomenon that the thicker steel fibers are pulled out due to larger size exists. The polypropylene fiber-reinforced alkali slag cementing material comprises the following slag chemical compositions in percentage by weight: 36.9 percent of silicon dioxide, 15.66 percent of aluminum oxide, 37.57 percent of calcium oxide, 9.3 percent of magnesium oxide and 0.36 percent of ferric oxide; active indexes are shown as follows: the mass coefficient is 1.69, the alkaline coefficient is 0.97, and the activity coefficient is 0.42; potassium water glass of which M is equal to 1.0, and M is equal to 2.0, sodium hydroxide with a mass fraction of greater than or equal to 96.0 percent, a polypropylene fiber with an elastic modulus of 42 GPa and tap water are adopted; the compressive and flexural strengths of an alkali slag cementing material gel sand part doped with the polypropylene fiber are improved along with the prolonging of maintenance time, and the flexural strength of the alkali slag cementing material containing 12 percent of alkali and 35 percent of water is improved. The invention can be used for the preparation of polypropylene fiber-reinforced alkali slag cementing material.

The invention belongs to the field of metallurgy experiment at a high temperature, in particular to a determination method for an activity coefficient of a solute component in metal melt at the high temperature. A double-crucible reference method comprises two experimental group reacting crucibles and a reference crucible. Appropriate reference metal is selected from the reference crucible to balance with MOx oxide, so that the activity coefficient of M in the reference metal is determined. Crucibles with similar materials are utilized as the two experimental crucibles, the reference metal and solvent metal to be researched are respectively put in the two experimental crucibles, and proportions of balancing slag are completely the same. When the balancing is carried out in the same experiment and the same atmosphere, according to the M content in the metal and the activity coefficient of M in the reference metal, the activity coefficient of M in the metal melt is obtained. By the adoption of the method, the difficulty of the metallurgy experiment at the high temperature is lowered, the experimental cost is decreased, and the obtained data is more accurate and reliable.

A method for precisely predicting phase equilibrium from existing phase equilibrium data on the basis of a wide range of phase equilibrium data including binary vapor-liquid equilibrium data; a method or apparatus for designing or controlling a component separator or a refiner using the prediction method; and a program for designing this design or control apparatus. Binary phase equilibrium measurement data is used to calculate an index of proximity ratio to critical points and infinite dilution pressure gradients. The obtained index is correlated with the infinite dilution pressure gradients to newly calculate infinite dilution activity coefficients from the respective index to infinite dilution pressure gradients correlations. The obtained infinite dilution activity coefficients values are used to predict phase equilibrium. Thus, the obtained values are used to design or control a component separator or a refiner, such as a distillation column.

The embodiment of the invention provides a data storage method and system. The data storage method comprises the steps of obtaining data to be stored, obtaining a capacity coefficient and a load coefficient of each storage region, selecting a target storage region according to the capacity coefficients and the load coefficients, storing the data to be stored into the target storage region, and recording storage information of the data to be stored, wherein the capacity coefficient of the storage region represents the used space of the storage region, and the load system of the storage region represents the current load of the storage region. According to the data storage method, data is stored into the storage region, when the data is inquired, only the corresponding storage region needs to be inquired, the data inquiry efficiency of a database can be improved, and the data reading efficiency of the relational database is improved.

The invention proposes an AC filter considered machine set action coefficient determining method, which belongs to the field of fault analysis of a generator. Considering that in a traditional method for analyzing the action coefficient of a machine set, the influence of the AC filter on the circuit is neglected, the invention is based on the analysis of the secondary synchronous oscillation to determine the action coefficient of the machine set and introduces a double-tuned wave AC filter to the system, which includes: adding a multi-tuned AC harmonic filter to the rectifying side in a high-voltage DC converter system; considering the influence of the multi-tuned AC harmonic filter on the capacity reactive power compensation of a DC transmission system; through the short circuit calculation, obtaining the new three-phase short-circuit current across the AC bus between a DC transmission rectifier station and the generator set; and improving the method for calculating the three-phase short circuit capacity of the DC transmission rectifier station's AC bus so as to further improve the method for determining the action coefficient of the machine set and to increase the measurement precision for action coefficient of the machine set. The method is very reliable, and in the practicing process of the method, the risks of secondary synchronous oscillation can be greatly reduced.

The invention relates to a multiple fluid phase mixed system chemical equilibrium calculating system. The calculating system comprises a data input module, a multiple mixed system chemical equilibrium calculating module, a system thermodynamic property calculating module and a calculating result output module; when the influence caused by the structures and shapes of particles are not needed to consider, the amount of parent materials of various reaction and generation species and the reference state mole Gibbs free energy are known, the minimal value of the Gibbs free energy of the whole mixed system can be calculated by gradually planning an optimization algorithm at the second time by calculating the Gibbs free energy of the system and the activity coefficients of various species and the amount {Xi} of the multiple chemical equilibrium state substances of various reactants and products through a thermodynamic model, so as to calculate the property of the equilibrium state of the mixed system; the calculating system does not need to perform experience trying when the chemical equilibrium is calculated, and a plurality of mixed system thermodynamic properties including the concentrations, activity, and activity coefficients and the like of all reactants and products can be high-efficiently and quickly calculated in the multiple chemical equilibrium by the optimized procedure and algorithm.