40 results about "Oxygen extraction" patented technology

Fire prevention and suppression systems and breathable fire-extinguishing compositions are provided for rooms, houses and buildings, transportation tunnels and vehicles, underground and underwater facilities, marine vessels, submarines, passenger and military aircraft, space stations and vehicles, military installations and vehicles, and all other human occupied objects and facilities. The system provides a breathable hypoxic fire-preventative atmosphere at standard atmospheric or local ambient pressure. The system employs an oxygen-extraction apparatus supplying oxygen-depleted air inside a human-occupied area or storing it in a high-pressure container for use in case of fire. A breathable fire-extinguishing composition is introduced for constant fire-preventive environments, being mostly a mixture of nitrogen and oxygen and having oxygen content ranging from 12% to 17%. A fire-suppression system is provided employing a fire-extinguishing composition with oxygen concentration under 16%, so when released it creates a breathable fire-suppressive atmosphere having oxygen concentration of approximately 16% (or lower if needed) with possible addition of carbon dioxide. A technology for automatically maintaining a breathable fire-preventive composition on board a human-occupied hermetic object is provided by introducing inert ballast that automatically maintains oxygen content under the Hypoxic Threshold. An aircraft fire prevention and suppression systems are provided utilizing hypoxic fire extinguishing compositions for producing breathable atmosphere onboard having fire-retarding properties.

Fire prevention and suppression system is provided for human occupied computer rooms and other industrial and public facilities. The equipment of the system provides low-oxygen environments with climate control and at normal atmospheric or slightly increased pressure. The system employs an oxygen-extraction apparatus, which supplies oxygen-depleted air inside an enclosed area communicating with the device. A fire-extinguishing composition is provided for continuous use in human occupied environments, being mostly a mixture of nitrogen and oxygen having oxygen content ranging from 12% to 18%.

Fire prevention and suppression system is provided for computer cabinets and fire-hazardous containers. The equipment of the system provides low-oxygen environments at standard atmospheric pressure. The system employs an oxygen-extraction apparatus that supplies oxygen-depleted air inside an enclosed area communicating with the device. A fire-extinguishing composition is provided for continuous use in computer cabinets and fire-hazardous containers, consisting of oxygen-depleted air having oxygen content below 12%.

A system and method for accurately producing MR images of selected vascular compartments includes employing a control scan and a tag scan, each including velocity selective modules that suppress signal from blood flowing faster than a given cutoff velocity, to acquire control and tag sets of NMR data that may be subtracted to produce a compartment-specific MR image that is substantially free of information from stationary tissues and blood outside the selective vascular compartments. Accordingly, physiological parameters, such as oxygen saturation (SaO2), oxygen extraction fraction (OEF), and cerebral metabolic rate of oxygen (CMRO2), can be generated from the compartment-specific images. Further still, kinetic curves of oxygen exchange can be created, thus providing detailed insight into oxygen exchange dynamics.

A system and process for maximizing the generation of marketable products from a variety of hydrocarbon feedstocks. The hydrocarbon feedstocks are first gasified and then oxidized in a two-chamber system and process using oxygen gas rather than ambient air. Intermediate gases generated in the system and process are recirculated and recycled to the gasification and oxidation chambers in order to maximize both energy generation and the resulting stoichiometric reaction products. The energy produced through the system and process is used to generate steam and produce power through conventional steam turbine technology. In addition to the release of heat energy, the hydrocarbon feedstocks are oxidized to the pure product compounds of water and carbon dioxide. The carbon dioxide is subsequently purified and marketed. The water recovered from the system and process is collected and electrolyzed to generate oxygen and hydrogen gases. These gases are separated using conventional gas separation technologies and also marketed. The system and process minimizes environmental emissions.

A facility and process capable of extracting oxygen in extraterrestrial environments from materials available in extraterrestrial environments, for example, on planets, planetoids, etc. The facility extracts oxygen from a mineral-containing solid material and is configured to form a free-falling molten stream of the solid material, evaporate at least a portion of the molten stream and produce a vapor containing gaseous oxygen, create a supersonic stream of the vapor, condense constituents of the supersonic stream to form particulates within the supersonic stream, separate the gaseous oxygen from the particulates, and then collect the gaseous oxygen.

The present invention relates to a method for operating a gas turbine engine unit (10) comprising a gas turbine engine (12, 12a, 12b, 12c) with at least a compressor section (14) and a turbine section (16), wherein the compressor section (14) and the turbine section (16) are operable by a working fluid (18, 20), and further comprising a unit (22) for an oxygen extraction process, wherein the method comprises the steps of: Discharging a total amount of O2-rich working fluid (18) from a compressor (24) of the compressor section (14) to the unit (22) for the oxygen extraction process and extracting O2 from the O2-rich working fluid (18) by an oxygen extraction process.

The invention provides a brain blood oxygen level measuring method based on magnetic resonance. The measuring method includes acquiring an amplitude diagram and a phase diagram of brain tissues; standardizing the amplitude diagram into a noise SD diagram, and acquiring a standardized diagram Ic according to linear fitting of the noise SD diagram; unwrapping the phase diagram to acquire a standard field diagram; putting the standard field diagram and the standardized diagram Ic into a regularization constraint rule to acquire a magnetism sensitiveness matrix without an ambient field; acquiring a vein oxygen saturation value and an oxygen metabolism parameter according to the magnetism sensitiveness matrix. The brain blood oxygen level measuring method has the advantages that magnetic field phase changes generated by air tissues are removed, so that magnetism sensitiveness values of the tissues are regained better, and venous blood oxygen saturation Yv and residual saturation of hemoglobin in venous blood, namely an oxygen extraction fraction (OEF), are acquired.

The invention provides an ozone water and soil infectious insect pest prevention and control machine. The ozone water and soil infectious insect pest prevention and control machine comprises an oxygen extraction device, an oxygen storage tank, a high-voltage discharge chamber and an ozone water mixing device, all of which are connected in sequence. The oxygen extraction device comprises an air compressor, an air heating pipe, an air cooling pipe, a water removing pipe, a guide pipe and a nitrogen removing pipe. An electric heating bar is arranged in the air heating pipe, one end of the air heating pipe is provided with an air inlet communicated with the air compressor, and the other end of the air heating pipe is provided with an air outlet. The lower end of the air cooling pipe is provided with a cooling water inlet, and the upper end of the air cooling pipe is provided with a cooling water outlet. The water removing pipe is located in the air cooling pipe, and the upper end and the lower end of the water removing pipe penetrate through an upper seal and a lower seal of the air cooling pipe respectively. The guide pipe winds the outer wall of the water removing pipe, and the lower end of the guide pipe stretches into the lower end of the water removing pipe. One end of the nitrogen removing pipe is communicated with the water removing pipe, and the other end of the nitrogen removing pipe is communicated with the oxygen storage tank. The prevention and control device can effectively extract oxygen from air and can guarantee the purity of oxygen, the oxygen is converted into the ozone lastly to be irrigated into the farmland, and therefore the sterilization effect is achieved.

Provided is a technique for calculating an oxygen extraction fraction by using MRI where the oxygen extraction fraction in a brain including brain parenchyma is calculated via a simple processing without an impact on an examinee, such as administration of caffeine. For this purpose, an MRI apparatus of the present invention measures a complex image of nuclear magnetic resonance signals, and calculates from thus measured complex image, a physical property distribution for obtaining a physical property image reflecting the oxygen extraction fraction. Then, thus calculated physical property distribution is separated into tissue-specific physical property distributions for at least two tissues (separated tissue images). After converting any of the separated tissue images into the oxygen extraction fraction, a distribution of the oxygen extraction fraction is estimated based on the condition that a value of any selected pixel is substantially equal to a mean value of pixels surrounding the selected pixel.