9419 results about "Oxygen content" patented technology

Methods and systems for supplying supplemental oxygen to patients for use in sub-acute care which maintains healthy blood oxygen content in the patients by controlled dosing of oxygen with a measured response to the patient's actual blood oxygen content are disclosed. The dosing can be provided by simple ON / OFF control over the delivery of oxygen or the amount of oxygen delivered to the patient with each inhalation can be varied in response to the patient's need as determined by a more sophisticated control scheme, such as a PID loop control algorithm, that utilizes the difference between the patient's actual blood oxygen content and a target blood oxygen content and / or trends in the blood oxygen content. The systems and methods are particularly directed at patients receiving supplemental oxygen in a sub-acute care environment.

The formation of a gap-filling silicon oxide layer with reduced volume fraction of voids is described. The deposition involves the formation of an oxygen-rich less-flowable liner layer before an oxygen-poor more-flowable gapfill layer. However, the liner layer is deposited within the same chamber as the gapfill layer. The liner layer and the gapfill layer may both be formed by combining a radical component with an unexcited silicon-containing precursor (i.e. not directly excited by application of plasma power). The liner layer has more oxygen content than the gapfill layer and deposits more conformally. The deposition rate of the gapfill layer may be increased by the presence of the liner layer. The gapfill layer may contain silicon, oxygen and nitrogen and be converted at elevated temperature to contain more oxygen and less nitrogen. The presence of the gapfill liner provides a source of oxygen underneath the gapfill layer to augment the gas phase oxygen introduced during the conversion.

An apparatus for concentrating the oxygen content of and injecting aroma into a stream of air and delivering the stream of air to the nostrils of a person includes an air intake filter in fluid communication with the air compressor for drawing a stream of air out of the surrounding atmosphere; a sieve bed in fluid communication with the air intake means, each sieve bed containing a quantity of nitrogen absorption material and having sieve bed input and output valve mechanism; so that the sieve bed extracts nitrogen from the air stream so that the proportion of oxygen exiting the sieve bed is elevated, and as the input valve mechanism closes, the sieve bed output valve mechanism opens and vents absorbed nitrogen from the sieve bed to the atmosphere; an aroma chamber containing aroma releasing material in fluid communication with the output valve mechanism.

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.

Methods are provided for depositing an oxygen-doped dielectric layer. The oxygen-doped dielectric layer may be used for a barrier layer or a hardmask. In one aspect, a method is provided for processing a substrate including positioning the substrate in a processing chamber, introducing a processing gas comprising an oxygen-containing organosilicon compound, carbon dioxide, or combinations thereof, and an oxygen-free organosilicon compound to the processing chamber, and reacting the processing gas to deposit an oxygen-doped dielectric material on the substrate, wherein the dielectric material has an oxygen content of about 15 atomic percent or less. The oxygen-doped dielectric material may be used as a barrier layer in damascene or dual damascene applications.

An inerting system is disclosed that is adaptable to inert the fuel tank of a vehicle, most typically an aircraft, that includes an oxygen detector to monitor the oxygen partial pressure of the vapors in the ullage (i.e., the overfuel) volume of the tank, a source of an inert gas (e.g., nitrogen) in valved communication with the ullage of the tank, and a detector for sensing the oxygen content in the ullage of the tank and controlling the flow of inert gas to the tillage to maintain that volume with a proportion oxygen that will not support combustion in the event of an ignition source or intrusion of another potentially explosive occurrence within said tank. A specific fiberoptic probe which enables monitoring oxygen content within the tank without introducing a source of electrical current within the tank is also disclosed.

A method of lowered NOx combustion is taught wherein the kinetic rate of NOx formation is reduced for a given combustion temperature in a gas turbine combustor. A supply of fuel is provided along with a supply of ambient air in sufficient quantity to form a fuel / air mixture having an equivalence ratio greater than about 0.55 when mixed with the fuel. The fuel / air mixture is mixed with a supply of cooled combustion gases in sufficient quantity such that the oxygen content of the resulting air mixture is less than about 18 percent. The resulting air mixture is then passed into the combustor.