Plants, algae, cyanobacteria and phytoplankton all split water molecules as part of photosynthesis -- the process that converts sunlight, carbon dioxide and water into sugars for food. It measures the air-fuel ratio of the exhaust coming out of the exhaust manifold and sends the high and low voltage signals to the powertrain control module in order to regulate the air-fuel mixture. Safety Information . Always follow these safety tips around oxygen: Never smoke, and don’t let others light up near you. Arterial blood gases: The value obtained from arterial blood gases or ABGs (SaO2) describes the oxygen saturation of arterial blood. These devices make oxygen from water by a process called electrolysis, during which an electric current passes through water from one positively-charged electrode called an anode to another negatively-charged electrode called a cathode. Carl W. Scheele had also discovered oxygen in Sweden in 1771, but his account had gone unpublished until 1777. The hypoxia kills many organisms that cannot escape, and thus the hypoxic zone is informally known as the “dead zone.” Oxygen is a safe gas, but it will make something else burn hotter, brighter, and more easily. Oxygen is the most common element on the surface of the Earth, occurring as oxygen gas, in water, and oxide minerals, or in combination with elements in silicates, carbonates, phosphates, sulfates, and many others. Our body needs oxygen to obtain energy to fuel all our living processes. Oxygen is chiefly obtained by liquefying air. The vast majority of oxygen is bound to hemoglobin, a protein contained within red cells. Life support systems in submarines Interior of the tourist submarine Atlantis whilst submerged (Image Credit: Leonard G. / Wikimedia Commons) Carbon dioxide is a waste product of that process. The respiratory system, with its conduction and respiratory zones, brings air from the environment to the lungs and facilitates gas exchange both in the lungs and within the cells. Oxygen was discovered in England by Joseph Priestley in 1774. The oxygen that people breathe on Earth also comes from the splitting of water, but it's not a mechanical process. According to the Canadian Centre for Occupational Health and Safety (CCOHS), materials you may ordinarily consider non-combustible, such as steel, iron, Teflon, and aluminum, may burn with liquid oxygen. Short answer: oxygen is supplied onboard a submarine through pressurized tanks or an oxygen generator, while drinking water is obtained by desalinating seawater. If you or a family member has a respiratory problem like asthma, COPD, bronchitis, emphysema, or if you’re suffering from sleep apnea, your doctor may be willing to give you a prescription for medical oxygen. Standard oxygen is colorless, tasteless, and has no odor. It is obtained by drawing blood from an artery such as the radial artery in the wrist or the femoral artery in the groin. Oxygen is a non-metal chalcogen gas that is represented by the letter O on the periodic table of elements. Hemoglobin is composed of four iron-containing ring structures (hemes) chemically bonded to a large protein (globin). It reacts very readily with combustible materials.. The oxygen content of surface waters of normal salinity in the summer is typically more than 8 milligrams per liter (8 mg/L); when oxygen concentrations are less than 2 mg/L, the water is defined as hypoxic (CENR, 2000). ABGs are measured in millimeters of mercury (mmHg) and can be a clue as to how efficiently your body is exchanging oxygen and carbon dioxide. Human respiratory system - Human respiratory system - Transport of oxygen: Oxygen is poorly soluble in plasma, so that less than 2 percent of oxygen is transported dissolved in plasma. 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