45results about How to "Lower concentration levels" patented technology

Systems and methods for preserving a perishable material sensitive to oxygen and bacterial spoilage are taught. The systems in some embodiments comprise a pressurized source of a first gas other than oxygen and a container for the perishable material, the container having a sealable lid, a passage including a one-way valve through the lid connected by a gas conduit to the pressurized source, and a mechanism for venting the container. In various embodiments oxygen exposure to the perishable material in the container is diluted by at least one cycle of pressurizing the container with the first gas other than oxygen, and then venting the container. In some embodiments oxygen dilution is by vacuum.

A hot oxygen stream containing radicals is fed into an offgas stream from a steelmaking vessel to convert carbon monoxide in the offgas to carbon dioxide.

A method of reducing the concentration of a chemical or drug substance in the blood plasma that targets the same or similar receptors as the normal neurotransmitters in the central or peripheral nervous system includes titrating an initial peak concentration of the chemical or drug substance in the blood for a predefined dosing period, titrating a lowest concentration level of the chemical or drug substance in the blood immediately before the end of the dosing period, and providing a plurality of subsequent dosing periods where each subsequent dosing period requires administration of a dosing amount of the chemical or drug substance and titrating of the peak concentration and the lowest concentration level to ensure that the lowest concentration level of the chemical or drug substance in the blood plasma for the subsequent dosing period is decreased by not more than five percent of the lowest concentration level of the previous dosing period and where the plurality of dosing periods added together extends the method for seventy days or more.

An LDMOS transistor includes a gate insulation film formed on a semiconductor substrate, a gate electrode formed on the gate insulation film, a drain well of a first conductivity type formed in the substrate so as to include a gate region covered with the gate electrode, a channel well of a second conductivity type formed in the drain well in a partially overlapped relationship with the gate region, a source region of the first conductivity type formed in the channel well in an overlapping manner or adjacent with a side surface of the gate electrode, a medium-concentration drain region of the first conductivity type having an intermediate concentration level and formed in the drain well at a side opposing to the source region in a manner partially overlapping with the gate region, the medium-concentration drain region being formed with a separation from the channel well, a drain region of the first conductivity type formed in the medium-concentration drain region with a separation from the gate region, a low concentration well of the second conductivity type formed inside the drain well so as to include at least a part between said channel well and the medium-concentration drain region.

The invention provides a pulverized coal combustion method with the function of capturing CO2, comprising the steps: CuFe2O4 is decomposed to generate O2 and oxygen vacancy ferrite CuFe2O4-delta (delta is no less than 0 but no more than 2); oxidation reaction is generated between the pulverized coal and the oxygen vacancy ferrite so as to generate CO2, H2O and non-condensed gas, wherein the oxidation reaction is generated between the non-condensed gas and O2 which is obtained by decomposition so as to generate CO2 and steam. The device for achieving the method comprises a loop which is formedby the communication of a fast fluidized bed, a first cyclone separator, a two-stage type bubbling fluidized bed, a U-type flow seal valve and the fast fluidized bed in sequence; and the bubbling fluidized bed is also communicated with a second cyclone separator which is communicated with an ash catching device. The pulverized coal combustion method with the function of capturing CO2 effectively combines a pure oxygen combustion technology of coal with a chemical chain combustion technology, not only lowers the preparation cost of the pure CO2, but also fully realizes the separation of the high-concentration CO2 after the coal reaction.

The invention discloses a sheet irrigator for flood diversion and drip irrigation. The irrigator comprises an upper shell body and a lower shell body, wherein the lower shell body is matched with the upper shell body, the upper shell body is a closed shell body, a plurality of water inlet grids are arranged at the top of the upper shell body, at least a row of water outlet grids are arranged at the bottom of the upper shell body, an inserting plate is arranged on the bottom of the upper shell body, which is close to the water outlet grids, and extends towards a direction away from the upper shell body; the lower shell body is provided with an opening at the top, a groove body is arranged in the lower shell body at a position corresponding to the inserting plate, and is matched with the inserting plate, a space is arranged between the groove body and one end of the lower shell body; a water inlet flow passage is arranged in the lower shell body at a position corresponding to the water outlet grids, and extends towards the other side of the groove body through the space; a water outlet of the water inlet flow passage is communicated with at least one silt presedimentation tank, the water outlet of the silt presedimentation tank is communicated with an energy dissipation flow passage; and a water outlet hole is arranged on the bottom of the lower shell body, which is close to thewater outlet of the energy dissipation flow passage. The sheet irrigator can be used for effectively solving the problem of synchronous improvement on hydraulic performance and anti-clogging performance of the irrigator, and is applicable to a flood diversion and drip irrigation system with self-adaptive regulation and control capacity.

The invention relates to the field of microorganisms, in particular to multifunctional Streptomyces amritsarensis alginolytic streptomyces and applications thereof. Streotomyces amritsarensis HG‑16, the preservation number of which is CCTCC M 2018237. The alginolytic streptomyces can not only kill Microcystis, but also antagonize Fusarium graminearum. Streptomyces alginolyticus, its fermentation broth and active secretions can effectively inhibit the production of microcystins in a short period of time. Adding the Streptomyces can inhibit the expression of 90% of the synthetic genes of microcystins within 9 hours, and within 36 hours After that, the expression of microcystin gene can be completely inhibited. After adding the Streptomyces for 3 days, the synthesis inhibition rate of algae toxin is 93%, while the alginolytic bacteria that have been reported to inhibit the synthesis of microcystin need more than 3 days to be able to inhibit production of microcystins.

The invention discloses a control method of fresh air equipment, fresh air equipment and a readable storage medium. The method includes the steps of: determining the number of users and the concentration value of pollutants in the area where the fresh air equipment is located; if the number of users is less than or equal to the preset number , then the first fresh air volume is obtained according to the preset per capita fresh air demand, the number of users, and the pollutant concentration value; the operation of the fresh air equipment is controlled according to the first fresh air volume, so as to adjust the fresh air in the area where the fresh air equipment is located. Air volume. The invention improves the accuracy rate of adjusting the fresh air volume of the fresh air equipment, and ensures the air quality in the area where the fresh air equipment is located.