157 results about "Osmotic pressure" patented technology

The invention discloses a fiber bragg grating osmometer measuring method with built-in temperature compensation and a packaging structure, and relates to the technical field of osmotic pressure measurement, and the key points of the technical scheme are that the fiber bragg grating osmometer comprises a protective shell, and an osmometer internal structure is formed in the protective shell; the packaging structure further comprises a structure head end connected with the pressure measuring part, a structure tail end connected with the temperature measuring part, an induction part arranged in the protective shell and used for transmitting deformation generated by osmotic pressure to the pressure measuring part, and the pressure measuring part arranged in the protective shell, and the pressure measuring part is of a suspension frame structure formed by coupling double bent frames. The two sides of the pressure measurement part are symmetrically provided with installation grooves for placing pressure measurement fiber gratings. The temperature measuring part is arranged in the protective shell, so that the problem that the measurement precision is obviously influenced by the environment temperature change due to the lack of a temperature compensation function of the existing sensor is solved, and the long-term measurement accuracy and reliability of the osmometer in a complex temperature environment are obviously improved.

The invention relates to a BIM-based water conservancy project safety early warning method and device, equipment and a medium. The method comprises the following steps: acquiring multi-source data such as an osmotic pressure gradient field based on a predefined hydraulic engineering monitoring point space coordinate list, and generating a three-dimensional osmotic field matrix after noise reduction, standardization and interpolation processing; physical characteristics of the matrix are extracted by using a pre-trained space-time convolution model, and abnormal parameter labels are determined through threshold comparison and deviation calculation; associating the exception to a BIM component node through a spatial topology matching algorithm; and finally, performing visual early warning based on the BIM abnormal coordinate vector, and generating a structured alarm instruction set by combining risk levels and abnormal type matching treatment measures. According to the method, through multi-source data fusion modeling, feature analysis and extraction, BIM space mapping, three-dimensional visualization decision making and the like, the precision, efficiency and intuition of hydraulic engineering safety early warning are improved, and a reliable technical scheme is provided for guaranteeing safe and stable operation of hydraulic engineering facilities.

The invention discloses a mine water storage layer leakage risk early warning and emergency decision intelligent system, which is characterized in that the system acquires osmotic pressure gradient, microseismic events, tracer migration rate and rock stratum displacement data in real time through distributed sensors, and generates a standardized multi-parameter data set through processing such as wavelet threshold denoising and variation mode decomposition; outputting a leakage probability value P and a potential fracture azimuth angle theta by using a fuzzy neural network model; early warning in three levels according to the P value, wherein Plt is greater than or equal to 0.3; when 0.6, regulating and controlling pore pressure, wherein 0.6 < = Plt; when P is larger than or equal to 0.85, sampling is encrypted, a grouting path is generated, and when P is larger than or equal to 0.85, an optimal evacuation path is calculated; constructing a grouting pressure gradient field according to the theta and the early warning grade, and dynamically matching the ratio of the leaking stoppage material; and online updating of model parameters is realized through closed-loop control. The system realizes multi-physics field coupling monitoring and dynamic adaptive decision making, and improves leakage risk assessment accuracy and emergency response efficiency.

The utility model discloses a kind of anti-fouling osmometer of measuring osmotic pressure, belong to osmometer technical field, including osmometer main body, the top of osmometer main body is equipped with cable, the bottom of osmometer main body is provided with filter end, the periphery of osmometer main body is provided with multiple anti-sloshing pieces in annular array arrangement;The utility model, when using the anti-fouling osmometer of measuring osmotic pressure, first, the distance between multiple supporting feet is adjusted according to the diameter size of the dropped pipeline, the positioning plate can be pinched by hand, so that the positioning plate is deformed through the second weakened groove, until the arc-shaped tooth plate is disengaged from the bottom of the crown gear ring, so that the rotating disc can be manually rotated outside the fixed cylinder, and the setting of multiple inclined grooves is matched, so that the adjusting block connected by transmission column can be synchronously moved outward or synchronously moved inward, so that the distance between multiple supporting feet can be synchronously adjusted.

The invention relates to the technical field of dam safety monitoring, and discloses an osmotic pressure monitoring data processing method and system for a reservoir dam, and the method comprises the following steps: obtaining osmotic pressure monitoring data and a reservoir water level; based on the data, reconstructing and carrying out normalization processing to obtain a normalized potential energy field; constructing a topological network based on the normalized potential energy field, and calculating a seepage field topological entropy capable of representing the overall structural characteristics of the seepage field; recognizing a hydraulic step event triggered by the rapid change of the water level of the reservoir, collecting a topological entropy response curve of the seepage field under the event, and extracting a real-time response feature vector from the curve; the invention further provides a system for executing the method. According to the method, severe data fluctuation caused by normal working conditions (such as water level sudden change) and early weak abnormity caused by internal structural diseases can be effectively distinguished, and the sensitivity and accuracy of seepage state abnormity diagnosis are remarkably improved.

An embodiment relates to an active implantable medical device (AIMD), comprising: a permeability module that allows ingress flow of a fluid to an osmotic agent chamber and generates osmotic pressure; a piston that moves longitudinally within the active implantable medical device (AIMD) in response to the osmotic pressure; a drug chamber that comprises a drug and a valve module to allow one-way flow of the drug from the drug chamber to outside the active implantable medical device (AIMD); a sensor module that measures a displacement of the piston in real-time; and an electronic module that communicates a signal to the valve module to control the valve module and regulate the one-way flow of the drug based on the displacement of the piston.

The invention belongs to the field of plant extracting solution concentration, and discloses a low-pressure high-power concentration device for a plant extracting solution and a concentration method using the low-pressure high-power concentration device. The device is based on a series reverse osmosis membrane stack and a feeding pump, a fresh water collecting tank, a booster pump, three types of pressure sensors, two types of osmometers, a water inlet pressure control system and a one-way valve are additionally arranged, the three types of pressure sensors are used for detecting the pressure of a feeding header pipe, the pressure of concentrated water and the pressure of a fresh water header pipe respectively, and the two types of osmometers are used for detecting the osmotic pressure of the feeding header pipe and the osmotic pressure of the concentrated water respectively. The water inlet pressure control system adjusts the design pressure of the device and the osmotic pressure of the plant extracting solution by adjusting the frequencies of the booster pump and the feeding pump, so that accurate monitoring of parameters is realized, efficient concentration of the plant extracting solution under low pressure is guaranteed, scaling on the surface of a reverse osmosis membrane is delayed, the service life of a membrane stack is prolonged, and continuous production of membrane concentration and filtration is realized.

The invention relates to the technical field of osmotic pressure testing, and particularly discloses an optimization system for osmotic pressure testing of an ipratropium bromide solution, which comprises a data acquisition module, a data processing module and a data processing module, the data recording module records the operation state data of the conductivity acquisition instrument in the use process, and the operation state of the conductivity acquisition instrument directly affects the accuracy of the conductivity data of the standard solution, so that the operation state of the conductivity acquisition instrument can be analyzed based on the data; the conductivity data can be corrected, so that the data is closer to a true value, the reliability of a quality analysis result of a standard solution is improved, the accuracy of a precision detection result of an osmotic pressure detection instrument and an osmotic pressure detection result of an ipratropium bromide solution is further improved, and the optimization of an osmotic pressure detection method is realized.

The invention provides a control method, device and equipment for preparation of hypotonic nutritious food and a storage medium, and relates to the technical field of preparation control of nutritious products. The method comprises the following steps: obtaining a measured osmotic pressure corresponding to a mixed material of the to-be-prepared hypotonic nutritious food; the measured osmotic pressure is obtained by measuring the osmotic pressure of a material sample of the mixed material based on a freezing point method; inputting the measured osmotic pressure into the trained linear regression analysis model to obtain a predicted value of the peristalsis promotion rate; the model is obtained based on milk powder reconstituted fluid osmotic pressure and zebra fish intestine peristalsis promotion rate training. Determining a preparation process optimization scheme according to the predicted value of the peristalsis promotion rate and the early warning condition of the peristalsis promotion rate, and adjusting process parameters according to the preparation process optimization scheme; wherein the process parameters in the optimization scheme of the preparation process comprise one or more of the content range of different types of proteins, the ratio of exogenous calcium to milk-derived calcium, the homogenizing pressure and the spray drying temperature. According to the method, functional evaluation can be rapidly completed, and preparation parameters can be optimized.

The invention discloses an osmotic pressure analysis method and device fusing model optimization and physical inversion and a medium, and the method comprises the steps: calculating correlation coefficients of a specified reservoir water level and osmotic pressure under different time lags based on cross-correlation function analysis, and recognizing a differential nonlinear feature corresponding to the maximum correlation coefficient; aiming at the differentiated nonlinear characteristics of different dam types, constructing a plurality of corresponding diagnosis prediction models in parallel, and establishing a model selection decision rule to select an optimal diagnosis model; according to delay parameters obtained through cross-correlation analysis, a permeability coefficient is reversely deduced through a pore medium heat transfer diffusion theoretical formula; according to the regression slope and the theoretical value attenuation factor of the optimal model, a permeability coefficient is reversely deduced in combination with a correction diffusion equation, credibility evaluation and weighted fusion are performed on the permeability coefficient, and a comprehensive permeability coefficient is calculated; and diagnosing the soil type and the permeability characteristic grade. According to the method, the propagation delay characteristic of reservoir water level change in the pore medium can be accurately quantified, and the inversion precision of the permeability coefficient and the engineering applicability are improved.

The invention discloses a soil or groundwater remediation agent in-situ precise injection and transmission effect evaluation test system, and belongs to the technical field of stratum pollution remediation. The device comprises a stratum simulation assembly, a stratum pressurization assembly and a parameter detection assembly, wherein the stratum simulation assembly comprises an experimental silo for storing a simulated stratum sample; the stratum pressurization assembly is arranged opposite to the experiment silo and can simulate pressure of different stratum depths; the parameter detection assembly comprises a plurality of pressure detection units which are vertically arranged at intervals along the experimental silo, each pressure detection unit comprises a capillary pressure measuring pipe and a plurality of pressure sensors, the capillary pressure measuring pipes are arranged in the radial direction of the experimental silo, and one end of each capillary pressure measuring pipe is communicated with the simulated stratum sample through the experimental silo; and the plurality of pressure sensors are arranged at intervals along the capillary piezometric tube so as to test the osmotic pressure of different positions of the capillary piezometric tube. Laboratory simulation can be carried out on the process of repairing the polluted stratum by the repairing liquid.

The invention provides an organ perfusate and a preparation method thereof. The Na ion concentration of the organ perfusate is 110-130 mmol / L, and the K ion concentration of the organ perfusate is 20-30 mmol / L; the organ perfusate is prepared from 0.024 mmol / L to 0.036 mmol / L of a colloid osmotic pressure substance, 100 mmol / L to 103 mmol / L of an impermeable substance, 0.001 mmol / L to 0.025 mmol / L of a cell protecting agent, 23 mmol / L to 38 mmol / L of a buffering substance, 3.015 mmol / L to 8.06 mmol / L of calcium and magnesium inorganic salt, 2.5 mmol / L to 6.5 mmol / L of an antioxidant and the balance of an energy substrate. Wherein the molar osmotic pressure of the organ perfusate is 290-320 mOsm / kg, and the viscosity of the organ perfusate at a preset temperature is lower than 2.0 cP; the colloid osmotic pressure substance is Pluronic F-68; and the cell protective agent is thyroxine.

This invention relates to the field of biotechnology, specifically disclosing a protective agent composition for long-term preservation of Scutellaria baicalensis exosomes and its preparation method. The protective agent composition comprises an osmotic pressure regulator, a stabilizer, a buffer, and a solvent. By optimizing the ratio of each component, the stability of Scutellaria baicalensis exosomes at low temperatures is significantly improved, extending their active preservation time. This composition is suitable for applications in drug delivery, cosmetics, and disease treatment.

The invention relates to a single-dose pilocarpine hydrochloride eye drop composition and a preparation method thereof, and belongs to the technical field of medicine preparation. The composition comprises a buffering agent, an osmotic pressure regulator and a solvent, and the composition does not contain a bacteriostatic agent. By using reasonable process preparation parameters, the prepared finished product is good in stability, the process parameters are simple and easy to operate, and the method has good application prospects and market value.

To provide a method and a device for collecting energy by nano unidirectional valve penetration.SOLUTION: The present invention includes technical principle and method for energy collection by penetration that is proposed on the basis of principal and penetration effect of a nano unidirectional valve. Two semi-permeable membranes 2-1 are provided, a solution 2-2 is filled, and the same is combined with a concentration control module 2-3, thereby controlling a concentration at a semi-permeable membrane boundary, differing solution concentrations in the vicinity of two semi-permeable membranes, realizing control of osmotic pressure, achieving effect of unidirectional valve action, rectifying disorder and high-speed thermal motion of solvent molecules to regular unidirectional flow automatically, forming potential energy of a liquid level or kinetic energy of liquid flow, and using the same for energy storage or power generation. The kinetic energy by thermal motion of molecules is extracted from environment to generate power, and electric energy is returned to environment after consumption thereof, and is used again for power generation.SELECTED DRAWING: Figure 3

The utility model relates to a kind of hole inside upward hole osmotic pressure gauge burying device, including the filter protection component, expandable fixed component, connection adjusting piece and detachable conveying rod connected in turn.Filter protection component contains double-layer porous sleeve: inner sleeve contains osmotic pressure gauge and fills filter medium, and outer sleeve is filled with support filter material between inner sleeve;Expandable fixed component includes elastic sealing member, reset member and support framework, and framework is provided with wire shaft direction passage and connection structure;One end of connection adjusting piece cooperates framework connection structure, and the other end is provided with transmission cooperation part;Conveying rod one end is provided with matching drive part, and the other end is provided with extension connection structure.The utility model realizes upward hole stable placement by expandable fixed component, double-layer sleeve inverse filtration structure prevents silting up and protects osmotic pressure gauge, and detachable design supports repair and reuse, adapts to deep hole and short-term / long-term monitoring demand, and provides reliable technical means for underground engineering osmotic pressure monitoring.

Provided are an electroporation buffer and an electroporation-based exosome drug loading method, wherein the electroporation buffer is a liquid medium used in a method for loading an exogenous substance into an exosome on the basis of electroporation, and has an osmotic pressure of 50-400 mOsm / kg and a pH value of 2.0-8.3. By means of the cooperation of osmotic pressure and pH value, the electroporation buffer greatly improves the loading efficiency of exogenous substances into exosomes without causing substantial damage to exosomes and nucleic-acid-based exogenous substances or any damage caused thereto is controllable, thereby meeting the requirements for commercial applications. In addition, the electroporation buffer and the drug loading method also have the advantage of being low cost.

An amine-containing water concentration system comprising an apparatus 1, which comprises an osmotic pressure generator 10, and a carbon dioxide introducing unit 21. The osmotic pressure generator inc

The invention discloses a horizontal well soaking drainage numerical simulation method considering chemical osmotic pressure, and belongs to the technical field of unconventional oil-gas exploration and development, and the method comprises the following steps: step 1, based on dual factors of capillary force and chemical osmotic pressure, establishing a spontaneous imbibition driving force curve formula; 2, based on the fracturing fluid spontaneous imbibition mathematical model considering the chemical osmotic pressure, setting the membrane efficiency E as 0 to obtain a first model; replacing the capillary force pc between the oil phase and the water phase in the first model with the spontaneous imbibition driving force pc + pi to obtain a second model; step 3, determining parameter values; step 4, establishing a neglect chemical osmotic pressure model by using Eclipse software; 5, determining values of a driving force constant pm, a curve fitting index n and a correction constant c, and drawing a spontaneous imbibition driving force curve; and step 6, establishing a horizontal well soaking drainage numerical simulation model based on the spontaneous imbibition driving force curve by utilizing Eclipse software. According to the method, the accuracy of horizontal well soaking drainage numerical simulation is improved.

The invention discloses a cement material crack microbial remediation effect evaluation method, and belongs to the field of cement material remediation effect performance evaluation, and an adopted remediation effect evaluation device comprises a mechanical evaluation system, an osmotic pressure measurement evaluation system and an internal structure analysis evaluation system; the mechanical evaluation system comprises axial pressurizing equipment and confining pressure equipment; the osmotic pressure measurement and evaluation system comprises a liquid injection pipe, a liquid discharge pipe and a sensor; the liquid source comprises a water source and a calcium source; the internal structure analysis and evaluation system comprises sound wave probes capable of rotating by 360 degrees, and the sound wave probes are arranged at the two ends of the sample. The method aims to avoid the situation that the microbial remediation effect is evaluated only from a single aspect, breaks through the single angle and limitation of a traditional method for identifying real breakthrough pressure, more clearly observes and evaluates the sample crack remediation effect, reveals the growth and development, distribution position and deposition form of microorganisms in cracks, and improves the detection accuracy. And meanwhile, cumbersome and complex operation is avoided, and whole-course real-time continuous monitoring is realized.

This invention belongs to the field of microbial fermentation technology and discloses a method and application for improving the production of staminodesmotic acid (Sclerotium sclerotiorum) based on dynamic osmotic pressure regulation. The method uses *Sclerotium sclerotiorum* as the production strain and employs a synergistic strategy of initial culture medium component optimization, precise osmotic pressure regulation during fermentation, and dynamic feeding to enhance synthesis. Utilizing the dual characteristics of sucrose as a carbon source and osmotic pressure regulator, and the osmotic pressure regulating effect of KCl, the osmotic pressure during fermentation is precisely controlled between 1050-1300 mOsmol / kg. This activates the MAPK-CWI signaling pathway and FKs2 gene expression, directionally promoting staminodesmotic acid synthesis and increasing staminodesmotic acid yield. This invention, by optimizing the initial carbon source and inorganic salt concentration, precisely regulating osmotic pressure during fermentation through feeding, and combining molecular mechanism analysis, achieves a significant increase in staminodesmotic acid yield, reduces industrial production costs, and provides technical support for the large-scale industrial production of staminodesmotic acid.

The invention provides an electroporation buffer solution and an exosome drug loading method based on electroporation, the electroporation buffer solution is a liquid medium used in a method for loading an exogenous material into an exosome based on electroporation, the osmotic pressure of the electroporation buffer solution is 50-400 mOsm / kg, and the pH value is 2.0-8.3. According to the electroporation buffer solution, through cooperation of osmotic pressure and the pH value, substantive damage cannot be caused to exosomes and nucleic acid allogenic substances or the damage is controllable, meanwhile, the loading efficiency of loading the allogenic substances to the exosomes is greatly improved, and the commercial application requirement can be met. In addition, the electroporation buffer solution and the drug loading method further have the advantage of being low in cost.

The application discloses a kind of for promoting walnut incision healing and preparation method and application thereof, it is related to walnut cultivation protection technical field.The healing paste is by elastic film-forming base phase 12-35%, high water absorption / water release humidity particle phase 3-12%, hydrophobic water-blocking microphase 5-22%, rheological and interface control phase 1-8%, osmotic pressure and water activity adjustment phase 5-20% and the rest amount of water and preservative etc.composition according to mass percentage;Film-forming base phase includes aqueous polyurethane-acrylate copolymer emulsion and modified polyvinyl alcohol or polyvinyl alcohol-starch blend, humidity particle phase includes crosslinked sodium carboxymethyl cellulose and crosslinked starch or alginate microparticles, hydrophobic microphase includes beeswax, microcrystalline wax, vegetable oil and rosin resin.By preparing each functional phase in turn and assembling in aqueous system, obtain the healing paste suitable for walnut incision protection under different climatic conditions.

Systems and methods for measuring osmotic pressure are described. In many embodiments, double emulsion droplets can be used as osmotic pressure sensors to measure local osmotic pressure. The double emulsion droplets can measure osmotic pressure in living cells and / or tissues.

The invention relates to the technical field of separation and concentration of biological macromolecules, in particular to a concentration column for biological macromolecular substances, which comprises a chamber filled with a water absorption material layer and a separation membrane arranged at the bottom of the chamber, the water absorbing material can absorb solvent components to generate osmotic pressure difference to drive solvents in a solution and other substances with the particle size smaller than that of the biological macromolecular substances to pass through the separation membrane, and the biological macromolecular substances are intercepted by the separation membrane. The concentration column can realize separation and / or concentration of biological macromolecular substances without depending on external pressure or centrifugal force.

To provide a membrane element manufacturing method that enables a membrane element with a predetermined blocking rate to be manufactured in a short period of time by controlling chemical damage caused to a membrane by a chemical solution.SOLUTION: A method of manufacturing a membrane element includes a blocking rate adjustment step of adjusting a blocking rate by passing a chemical solution through a primary-side channel of a membrane element. When the chemical solution is passed in the blocking rate adjustment step, a difference between pressures applied to both membrane surfaces of the membrane element is set lower than an osmotic pressure of the chemical solution.SELECTED DRAWING: None

The invention provides a high earth and rockfill dam core wall pore water pressure test method, and belongs to the technical field of indoor soil mechanics tests. According to the method, the structure of a traditional compression consolidation apparatus is improved, a sealing steel barrel which is provided with a double-layer sealing ring and can lead out a wire harness is adopted, and a high-precision osmometer, a soil pressure meter and a high-frequency data acquisition system are combined, so that the compression consolidation apparatus can be fully sealed under the conditions of complete sealing and high pressure; and the generation and change rule of pore water pressure in the filling process of the core wall of the high earth-rock dam can be accurately simulated. The method comprises the steps of soil sample preparation, saturation treatment, instrument burying, graded loading, data acquisition and the like, and can be used for researching the influence of different water contents, loading rates and clay content on the pore water pressure. Test results show that the method can still keep good sealing and data stability under the condition of 5 MPa high pressure, has high precision, high repeatability and high reliability, and can provide scientific basis for high earth and rockfill dam core wall design and construction safety.

The present invention is a concentration system for obtaining, by separating a solvent from a target solution containing a target component, a concentrated liquid in which the target component is concentrated, the concentration system comprising a plurality of semipermeable membrane modules, and a pressurizing device for increasing the pressure of the target solution. Each of the plurality of semipermeable membrane modules has a semipermeable membrane, and a first chamber and a second chamber partitioned by the semipermeable membrane, wherein a concentration flow path formed by connecting the first chambers of the plurality of semipermeable membrane modules is provided, and a dilution flow path formed by connecting the second chambers of the plurality of semipermeable membrane modules is provided. The target solution is caused to flow through the concentration flow path, and an auxiliary solution having osmotic pressure is caused to flow through the dilution flow path. The concentration system comprises at least one selected from a group consisting of a concentrated liquid measuring device and an auxiliary solution measuring device, and an adjusting device. The adjusting device includes at least one selected from a group consisting of a concentrated liquid adjusting device and an auxiliary solution adjusting device. The concentrated liquid measuring device is provided downstream of the concentration flow path, and the auxiliary solution measuring device is provided downstream of the dilution flow path. The concentrated liquid measuring device measures at least one selected from a group consisting of the flow rate and the concentration of the concentrated liquid. The auxiliary solution measuring device measures at least one selected from a group consisting of the flow rate and the concentration of the auxiliary solution. The concentrated liquid adjusting device controls the pressurizing device such that a measured value of the concentrated liquid measuring device falls within a predetermined range. The auxiliary solution adjusting device controls the pressurizing device such that a measured value of the auxiliary solution measuring device falls within a predetermined range.

The invention provides a TBM tunneling grouting parameter intelligent regulation and control system and method based on seepage pressure dynamic inversion, and belongs to the technical field of tunnel engineering intelligent construction. Aiming at the problems of pipe blockage, slurry waste and support failure caused by mismatching of grouting parameters and hydrogeological conditions in deeply-buried water-rich stratum TBM construction, an integrated technical scheme of seepage pressure inversion, intelligent decision-making, real-time regulation and control and closed-loop correction is provided. The system comprises a seepage pressure field inversion module, a multi-parameter fusion detection module, an intelligent decision regulation and control module, a dynamic execution and feedback module and a closed-loop correction module. According to the method, a surrounding rock seepage pressure field is inversed in real time based on a distributed optical fiber sensing network, a grouting efficiency coefficient model is constructed to evaluate the slurry diffusion radius, cooperative regulation and control parameters are generated by adopting an XGBoost multi-objective optimization algorithm, and the model is continuously corrected through closed-loop feedback. The grouting material utilization rate can be increased, the pipe blocking rate is reduced, the supporting effect is guaranteed, and reliable technical support is provided for complex geology TBM tunneling.