27 results about "Carbon dioxide partial pressure" patented technology

The invention discloses a typhoon influence distinguishing method and system based on seawater CO2 partial pressure data, and the method comprises the steps: obtaining sea area situation monitoring data in a target sea area typhoon transit period through a multi-source observation platform, and constructing a standardized data set and a climate state background field; a DBSCAN clustering algorithm is adopted to perform water mass division, and the typhoon characteristic water mass distribution is determined in combination with a Manchester-HuitiniU test and correlation analysis. And calculating a seawater carbon dioxide partial pressure abnormal field based on the climate state background field, constructing a typhoon influence index sequential sequence, identifying a core influence area, and generating a typhoon influence trace path. And then seawater carbon dioxide partial pressure grid point reconstruction is carried out, and a typhoon influence space map is constructed. And finally, analyzing space-time change of carbon dioxide flux of air-sea, evaluating carbon sink stability, and generating a typhoon-carbon sink sensitivity zoning map. Seawater carbon dioxide partial pressure is used as a core index, limitation of a traditional method is overcome, and reliable technical support is provided for typhoon marine environment influence assessment.

The application discloses a kind of desulfurization wastewater's increase processing method of sink, for the problem of strong acidity of desulfurization wastewater, higher carbon dioxide partial pressure.Utilize sink increasing agent can realize wastewater sink, the percentage of weight of each component of sink increasing agent is as follows: calcium oxide 10-85%, apatite 10-85%, calcined dolomite 0.01-85%, limestone 0.01-85%, olivine 0.01-50%, sodium carbonate 0.01-10%, sodium bicarbonate 0.01-10%, potassium dihydrogen phosphate 1.00-40%, and the sum of weight ratio of above each component is 100%.By using the method of the application, the sink increasing agent is used to improve the alkalinity of desulfurization wastewater, significantly reduce the carbon dioxide partial pressure in wastewater, improve the absorption of carbon dioxide, realize the transformation of carbon source into carbon sink, and strictly control the weak alkaline of water body at the discharge end.The system can increase the absorption of carbon dioxide, realize the sink of desulfurization wastewater;The method can quickly dissolve the sink increasing agent, realize the quick sink effect;And the method can adjust the weak alkaline of water body at the discharge end, the weak alkaline of desulfurization wastewater with low pH after treatment can be directly discharged.

The application relates to a method and device for pyrolyzing heavy magnesium water and basic magnesium carbonate, the method comprising: heating the heavy magnesium water; wherein a vacuum treatment is adopted, and the vacuum degree of the vacuum treatment is controlled to perform a first-stage pyrolysis of the heavy magnesium water; the vacuum treatment is stopped according to the first temperature of the heavy magnesium water to perform a second-stage pyrolysis of the heavy magnesium water, and basic magnesium carbonate is obtained. In the first-stage pyrolysis, it is also an induction period of pyrolysis. The heavy magnesium water is heated, and a certain vacuum degree is reached in the pyrolysis process by using the vacuum treatment, the carbon dioxide partial pressure in the pyrolysis is reduced, the induction period of the pyrolysis is controlled, the pyrolysis temperature in the first stage is reduced, the reaction rate of the pyrolysis is accelerated, and the energy consumption is reduced.

The invention discloses an aquarium water-gas interface carbon dioxide gas monitoring linkage control device and method, and belongs to the technical field of aquarium related equipment. The aquarium water-gas interface carbon dioxide gas monitoring linkage control device comprises a container body with an opening in the lower portion, and the opening of the container body is immersed into a water body of an aquarium water-gas interface; the gas enrichment cavity collects carbon dioxide which is dissolved in a water body and escapes from a water-gas interface in the area, the carbon dioxide passes through the vent hole and is detected by the sensing detection unit through the waterproof breathable film to generate carbon dioxide concentration data, and the control unit calculates the carbon dioxide partial pressure slope and the carbon dioxide escape flux according to the carbon dioxide concentration data; the carbon dioxide output of the carbon dioxide supply assembly is controlled based on the carbon dioxide escape flux. The system can monitor carbon dioxide dissolution in a water body in real time, timely reflect the carbon dioxide concentration change dynamic state of the water body, automatically control the supply amount of carbon dioxide, ensure the stability of photosynthesis of green plants in the aquarium, and realize dynamic balance of the carbon dioxide dissolution amount of the water body.

The invention provides basic cobalt carbonate with high carbonate content and a preparation method thereof, and belongs to the technical field of cobalt compound preparation. The basic cobalt carbonate can be used as a cobalt source or a cobalt compound precursor for a positive electrode material. The method comprises the following steps: introducing carbon dioxide into a sodium carbonate solution in advance to obtain a pre-carbonized sodium carbonate solution; synchronously dropwise adding the pre-carbonized sodium carbonate solution and the cobaltous sulfate solution for reaction under the condition of partial pressure of carbon dioxide, and controlling the pH value of the reaction solution to obtain reaction slurry; aging the reaction slurry under a carbon dioxide pressurization condition, regulating the pH value, and filtering to obtain a wet filter cake; the wet filter cake is sequentially subjected to sodium bicarbonate solution replacement washing and carbon dioxide saturated deionized water washing, then dried, smashed and screened, and a product is obtained; the method disclosed by the invention is beneficial to improving the carbonate introduction degree of basic cobalt carbonate and reducing soluble salt entrainment, and few insoluble residues are generated in acid medium dissolution evaluation.

The invention belongs to the technical field of oilfield chemistry, and relates to an organic packing liquid and a preparation method thereof. According to the organic packing liquid, hydrolysis ionization is blocked from the source by means of a non-aqueous solution medium, corrosion of acid gas to an underground pipe column at high temperature and high pressure is effectively reduced, and the organic packing liquid comprises, by weight, 80%-99.7% of polyhydric alcohol, 0.1%-0.3% of a deoxidant, 0.2%-2.0% of a buffering agent and 0-19.7% of heavy salt. The organic packing liquid disclosed by the invention has an extremely low corrosion rate to L80-13Cr, the corrosion rate to the L80-13Cr is only 0.0017 mm / a under the conditions that the partial pressure value of carbon dioxide reaches 10-20MPa, the partial pressure value of hydrogen sulfide reaches 2-10KPa and the temperature is 200 DEG C, and the organic packing liquid has no adverse effect on a rubber sheet of a field packer.

A mesoporous carbon sorbent for removal of carbon dioxide from a gaseous material includes a BJH average pore width greater than about 3 nm, and a selectivity of carbon dioxide to nitrogen greater than about 20.00 at about 30° C., a partial pressure of carbon dioxide of about 114 mmHg, and a partial pressure of nitrogen of about 646 mmHg. Related mesoporous carbon sorbents, and methods of forming the carbon sorbents are also disclosure.

The invention discloses a method and equipment for measuring the partial pressure of carbon dioxide in a water body through a spectrum method and a storage medium. The method comprises the following steps: regularly collecting a carbon dioxide partial pressure measured value and absorption spectrum data of a water body, pre-processing the absorption spectrum data by using multiple preset algorithms, evaluating the data quality of the pre-processed absorption spectrum data, and outputting optimal spectrum data; the method comprises the following steps: matching spectral data with a carbon dioxide partial pressure measured value, constructing a training sample set, carrying out parallel training on the training sample set by adopting multiple machine learning algorithms, constructing a candidate inversion model library, carrying out performance evaluation on inversion models in the candidate inversion model library, and determining a final pCO2 inversion model. And subsequently, when new absorption spectrum data to be measured are received, a pCO2 value can be output according to the pCO2 inversion model. The problem that the temporal-spatial resolution and the monitoring efficiency are low due to the fact that precision and large-range synchronous monitoring cannot be considered when the pCO2 value of the water body is measured is solved, and the effect of improving the temporal-spatial resolution and the monitoring efficiency is achieved.

A method for producing a carbamic acid salt, including contacting a carbon dioxide-containing mixed gas having a partial pressure of carbon dioxide of 0.001 atm or more and less than 1 atm with an amino group-containing organic compound in the presence of a base in at least one organic solvent selected from the group consisting of an organic solvent having 2 or more and 8 or less carbon atoms, and a method for producing a carbamic acid ester or a urea derivative using the carbamic acid salt.

The present application relates to the technical field of medical information monitoring, and more particularly to a non-invasive carbon dioxide partial pressure monitoring ear clip and an intelligent monitoring method thereof, comprising: determining that a trigger alarm is determined based on a theoretical carbon dioxide partial pressure value to determine that the partial pressure is unqualified; determining the content unqualified based on the evaluation concentration value; determining the alarm state according to the relationship between the first deviation value and the risk deviation value; in response to determining that the content is unqualified, determining that the second evaluation is inaccurate based on the actual standard deviation value; according to the relationship that the second deviation value is less than or equal to the second deviation threshold, the evaluation concentration value is re-determined based on the theoretical carbon dioxide partial pressure value, so as to re-determine the partial pressure qualification, and the early warning concentration range is re-determined according to the second deviation value; the present application can quickly and accurately obtain the carbon dioxide partial pressure condition through multi-parameter coupling in a non-invasive manner, and can master the alveolar ventilation function and the respiratory function in real time through the carbon dioxide partial pressure condition.

Device for determination of a CO2 partial pressure value on a blood side of an oxygenator having an oxygenator with a blood side, a gas side and a semipermeable membrane, wherein the membrane separates the blood side from the gas side, the gas side has an inlet and an outlet and, during operation of the oxygenator, a gas flow flows into the inlet to the outlet at a flow rate. The device also has a first sensor configured to measure CO2 partial pressure values of the gas side and a control unit configured to process the measured CO2 partial pressure values of the gas side and to determine a CO2 partial pressure value on the blood side based on the measured CO2 partial pressure values of the gas side. The control unit determines the CO2 partial pressure value on the blood side during operation of the oxygenator.

One or more light sensors in an ear-worn device may determine a partial pressure of carbon dioxide in a bloodstream of a patient. A processor of the ear-worn device may determine, based on the partial pressure of carbon dioxide and a threshold, a respiratory pathology of the patient.

One or more light sensors in an ear-worn device may determine a partial pressure of carbon dioxide in a bloodstream of a patient. A processor of the ear-worn device may determine, based on the partial pressure of carbon dioxide and a threshold, a respiratory pathology of the patient.

The present disclosure provides methods of producing recombinant adeno-associated virus (rAAV) wherein rAAV production occurs under a controlled partial pressure of carbon dioxide. Also are methods of producing rAAV under air sparge conditions for modulating the partial pressure of carbon dioxide.

This invention discloses a carbonate raw meal decomposition device in a high carbon dioxide partial pressure environment. It includes a high carbon dioxide partial pressure furnace, a raw meal buffer silo, a cyclone separator, and a waste heat boiler. The high carbon dioxide partial pressure furnace is connected to the raw meal buffer silo. The high carbon dioxide partial pressure furnace includes a reaction chamber and a vertical combustion furnace body, which are connected. A circulating separator is installed in the vertical combustion furnace body, and the circulating separator is connected to the side of the cyclone separator. The top of the cyclone separator is connected to the waste heat boiler. This invention's device is suitable for the continuous decomposition process of carbonate raw meal in a high carbon dioxide environment, and a material decomposition device has been developed to match the process design. This device can achieve a carbonate raw meal decomposition rate of over 85% at an 80% carbon dioxide concentration, ensuring the quality of cement clinker products after oxygen-enriched / pure oxygen combustion in cement kilns.

A system can include a reforming reactor, a water-gas shift (WGS) reactor, a sub-system to increase the partial pressure of carbon monoxide and carbon dioxide, and a sorption enhanced water-gas shift (SEWGS) reactor. The reforming reactor may react a hydrocarbon feed to produce a reformer effluent that includes carbon monoxide and hydrogen. The WGS reactor may receive the reformer effluent and to convert at least a portion of the carbon monoxide to carbon dioxide and hydrogen and produce a shift effluent. The sub-system may increase the partial pressure of carbon monoxide and carbon dioxide in the shift effluent. The SEWGS reactor may receive the shift effluent with the increased partial pressure of carbon monoxide and carbon dioxide and to provide a carbon-dioxide-rich product stream and a hydrogen-rich product stream.

The invention discloses a method for testing and evaluating carbonate dissolved and weathered carbon sinks, which comprises the following steps of: acquiring and preprocessing multi-source data, constructing a carbonate rock exposure mask, establishing a soil carbon dioxide partial pressure multivariable estimation model, and calibrating an observation data area of water-containing chemical and equilibrium information to obtain gridded soil carbon dioxide partial pressure distribution; the dynamic ion strength and the corrected ion activity coefficient are calculated in combination with hydrological process and hydrochemical data, the maximum potential carbonate dissolution rate is solved and converted into the carbonate dissolution and weathering carbon sink amount, a comprehensive carbon sink index representing the carbon sink capacity and stability is constructed, and a carbon sink enhanced hot spot area and a sensitive response zone are identified. According to the method, the contribution of various external forces such as quantitative separation of greenhouse gases, natural force, aerosol, land utilization and the like to carbonate dissolved-weathered carbon convergence is provided, and a new tool is provided for carbon cycle response evaluation in future climate scenarios.

This invention proposes a method for isocarbonyl hyperventilation to protect alveolar epithelial cells from oxidative damage. It belongs to the field of medical respiratory therapy technology. The method includes: providing patients requiring respiratory support with a minute ventilation volume higher than physiologically required, while simultaneously supplementing the inhaled air with exogenous carbon dioxide using a gas mixing device; continuously monitoring the patient's end-tidal carbon dioxide partial pressure, the concentration of 8-isoprostaglandin in exhaled condensate, and pH value, among other oxidative stress biomarkers, using monitoring equipment; and precisely regulating gas composition and ventilation parameters through isocarbonyl hyperventilation to create a suitable microenvironment for alveolar epithelial cells, effectively neutralizing excessive intracellular oxidative substances, reducing direct damage to cells from oxidative stress, and decreasing adverse effects such as cell membrane lipid peroxidation and protein denaturation, thereby significantly improving the survival rate and normal function maintenance capacity of alveolar epithelial cells.

The application discloses a kind of carbon dioxide partial pressure remote sensing monitoring method, system and equipment based on random forest, comprising: obtaining the measured carbon dioxide partial pressure data of target sea area multi-year period, and multi-source remote sensing data and reanalysis data covering corresponding period;According to the space-time information of measured carbon dioxide partial pressure data, the corresponding environmental parameters are matched to construct modeling dataset;Feature variable is selected from modeling dataset, and carbon dioxide partial pressure inversion model is constructed based on random forest algorithm;The accuracy of the optimized model is verified using the test set, and sensitivity analysis is carried out to evaluate the stability of the model;The verified carbon dioxide partial pressure inversion model is applied to the time series environmental parameter data of target sea area, and high spatial and temporal resolution monitoring of carbon dioxide partial pressure is realized.The application has the advantages of no need for field observation, compatible with multi-source data, strong universality, etc., and can be effectively applied to large-scale, long time sequence of marine carbon monitoring task.

The invention provides a method for protecting alveolar epithelial cells from oxidative damage through equal-carbonic-acid hyperventilation. Belongs to the technical field of medical respiratory therapy. The method comprises the following steps: providing minute ventilation support higher than physiologically required for a patient needing respiratory support, and supplementing exogenous carbon dioxide to inhaled gas by using a gas mixing device; continuously monitoring oxidative stress biomarkers such as end-expiratory carbon dioxide partial pressure, 8-isoprostaglandin concentration and pH value in expiratory condensate and the like of a patient through monitoring equipment; gas components and ventilation parameters are accurately regulated and controlled through equal-carbonic-acid high ventilation, a suitable microenvironment is created for alveolar epithelial cells, excessive oxidizing substances in the cells are effectively neutralized, direct damage of oxidative stress reaction to the cells is reduced, adverse conditions such as cell membrane lipid peroxidation and protein denaturation are reduced, and the treatment effect of the alveolar epithelial cells is improved. Therefore, the survival rate and the normal function maintaining capability of the alveolar epithelial cells are remarkably improved.

This invention belongs to the field of marine engineering technology and relates to an IoT-based dynamic monitoring device for carbon sequestration in marine ranches. The device includes a buoy, several aquaculture cages located at the bottom of the buoy, multi-parameter carbon sequestration monitoring sensors for monitoring the partial pressure of carbon dioxide in each cage, and a pipeline assembly extending to the seabed and a control system. Based on the multi-parameter carbon sequestration monitoring sensor data for each cage, the control system independently controls the flow pump in the pipeline assembly, precisely adjusting the amount of nutrient-rich seawater transported from the seabed to the corresponding aquaculture cage, thus forming a closed loop of "monitoring, feedback, and regulation," achieving intelligent dynamic management and efficiency improvement of the carbon sequestration process in marine ranches.

The application provides a portable non-closed oxygen inhalation mask, and relates to the field of medical auxiliary devices; the oxygen inhalation mask comprises: a flexible mask used for being worn on the head and face of a user, which is provided with a connecting port at a position opposite to the mouth and nose of the user; a supporting framework is arranged in the flexible mask; a cup cover is arranged on the side of the flexible mask away from the face of the user, and the open end of the cup cover is in sealing connection with the connecting port; an air inlet for being connected with an oxygen supply pipe is arranged on the side wall or the bottom of the cup cover; wherein the volume of the cup cover can be adjusted, and the overall weight is relatively light to avoid sliding. The application can improve the oxygen concentration around the mouth and nose of the user to improve the oxygen utilization rate; reduce the damage of the oxygen flow to the nasal mucosa and the face, thereby improving the oxygen inhalation comfort; improve the carbon dioxide concentration around the mouth and nose, maintain the relatively normal blood carbon dioxide partial pressure through carbon dioxide reabsorption to promote the red blood cells to release oxygen to tissue cells, and improve the internal respiration efficiency of each organ of the body and the effect of oxygen inhalation treatment.

This invention discloses a carbon dioxide gas monitoring and linkage control device and method for the water-air interface of an aquarium, belonging to the technical field of aquarium-related equipment. It includes a container with an open bottom, the opening of which is immersed in the water at the aquarium's water-air interface. A gas enrichment chamber collects carbon dioxide dissolved in the water and escaping from the water-air interface in that area. The carbon dioxide passes through a vent and a waterproof, breathable membrane, and is detected by a sensing unit to generate carbon dioxide concentration data. The control unit calculates the carbon dioxide partial pressure slope and carbon dioxide escape flux based on the carbon dioxide concentration data, and controls the carbon dioxide output of the carbon dioxide supply component based on the carbon dioxide escape flux. This invention enables real-time monitoring of carbon dioxide dissolution in the water, timely reflection of dynamic changes in carbon dioxide concentration, and automatic control of the carbon dioxide supply, ensuring stable photosynthesis of green plants in the aquarium and achieving a dynamic balance of dissolved carbon dioxide in the water.

A mesoporous carbon sorbent for removal of carbon dioxide from a gaseous material includes a BJH average pore width greater than about 3 nm, and a selectivity of carbon dioxide to nitrogen greater than about 20.00 at about 30° C., a partial pressure of carbon dioxide of about 114 mmHg, and a partial pressure of nitrogen of about 646 mmHg. Related mesoporous carbon sorbents, and methods of forming the carbon sorbents are also disclosed.

A measurement arrangement for measuring carbon dioxide partial pressure of exhaled air from a person includes a calculation unit, a carbon dioxide analyser device, and a gas conduit assembly. A perturbation volume member is provided, defining a predetermined known perturbation volume, and configured to be selectively connected and disconnected to a person such that both inspiratory and expiratory air flows can pass either through the perturbation volume member or not, thereby introducing a variation of the determined end-tidal carbon dioxide. The perturbation volume member is either a gas conduit, or a perturbation space conduit which is configured to be connected to and disconnected from the gas conduit. The calculation unit is configured to calculate the effective pulmonary blood flow (EPBF) and the effective lung volume (ELV) based upon these induced variations of the determined end-tidal carbon dioxide partial pressure, the known perturbation volume, and a respiratory rate.

This invention relates to a dynamic tracking adsorption testing device and method adapted to the adsorption performance of adsorbents with different carbon dioxide partial pressures in various scenarios. It addresses the current limitations of devices that cannot dynamically track the adsorption process and lack standardized processing devices and methods for multi-parameter linkage analysis. The dynamic tracking adsorption testing device includes a total reaction control unit, a self-regulating gas supply system, and a gas analysis system. The inlet of the total reaction control unit is connected to the self-regulating gas supply system, and the outlet of the total reaction control unit is connected to the gas analysis system. The dynamic tracking adsorption testing method involves pre-treating the test sample under vacuum activation, followed by adsorption and desorption. Data on the mass change and inlet / outlet concentrations during the adsorption phase are obtained. A triple adsorption capacity calculation model is established based on this data, and the adsorption cycle stability test is performed using the triple adsorption capacity calculation model after data analysis.

A mesoporous carbon sorbent for removal of carbon dioxide from a gaseous material includes a BJH average pore width greater than about 3 nm, and a selectivity of carbon dioxide to nitrogen greater than about 20.00 at about 30°C, a partial pressure of carbon dioxide of about 114 mmHg, and a partial pressure of nitrogen of about 646 mmHg. Related mesoporous carbon sorbents, and methods of forming the carbon sorbents are also disclosure.