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Topic: Oxygen (disambiguation)

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Oxygen

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	oxygen - Hutchinson encyclopedia article about oxygen
		Oxygen is a by-product of photosynthesis and the basis for respiration in plants and animals.
		Oxygen is obtained for industrial use by the fractional distillation of liquid air, by the electrolysis of water, or by heating manganese(IV) oxide with potassium chlorate.
		Oxygen is essential for combustion, and is used with ethyne (acetylene) in high-temperature oxyacetylene welding and cutting torches.
	encyclopedia.farlex.com /Oxygen (414 words)

	CONK! Encyclopedia: Oxygen (Site not responding. Last check: 2007-10-23)
		Oxygen is a chemical element in the periodic table.
		Oxygen is a major component of air, produced by plants during photosynthesis, and is necessary for aerobic respiration in animals.
		Oxygen derivatives are prone to form free radicals, especially in metabolic processes.
	www.conk.com /search/encyclopedia.cgi?q=Oxygen (958 words)

	Oxygen
		Oxygen, as a supposed mild euphoric, has a history of recreational use (see oxygen bar), however the reality of this effect is doubtful.
		In the 19th century, oxygen was often mixed with nitrous oxide to promote an analgesic effect; a stable 50% gaseous mixture (Entonox) is commonly used in medicine today as an analgesic, and 30% oxygen with 70% nitrous oxide is the common basic anaesthetic mixture.
		In the case of spacesuits, oxygen partial pressure in the breathing gas is typically about 0.30 bar (1.4 times normal), and oxygen partial pressure in the astronaut's blood (due to downward adjustments due to water vapor and CO in the alveoli) is close to sea-level normal of 0.14 bar.
	www.brainyencyclopedia.com /encyclopedia/o/ox/oxygen.html (2765 words)

	Oxygen - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-23)
		Oxygen is the chemical element in the periodic table that has the symbol O and atomic number 8.
		In the 19th century, oxygen was often mixed with nitrous oxide to promote a kind of analgesic effect; indeed such a mixture (Entonox) is commonly used in medicine today.
		Oxygen was again discovered by the Swedish pharmacist Carl Wilhelm Scheele sometime before 1773, but the discovery was not published until after the independent discovery by Joseph Priestley on August 1 1774.
	www.bonneylake.us /project/wikipedia/index.php/Oxygen (981 words)

	Oxygen - Facts, Information, and Encyclopedia Reference article
		The atmospheric abundance of free oxygen in later geological epochs and up to the present has been largely driven by photosynthetic organisms, roughly three quarters by phytoplankton and algae in the oceans and one quarter from terrestrial plants.
		Oxygen is a major component of air, produced by plants during photosynthesis, and is necessary for aerobic respiration in animals.
		Oxygen is essential to respiration, so oxygen supplementation has found use in medicine (as oxygen therapy).
	www.startsurfing.com /encyclopedia/o/x/y/Oxygen.html (1132 words)

	Science Fair Projects - Oxygen
		Oxygen is the chemical element in the periodic table that has the symbol O and atomic number 8.
		In the 19th century, oxygen was often mixed with nitrous oxide to promote a kind of analgesic effect; indeed such a mixture (Entonox) is commonly used in medicine today.
		Oxygen was again discovered by the Swedish pharmacist Carl Wilhelm Scheele sometime before 1773, but the discovery was not published until after the independent discovery by Joseph Priestley on August 1 1774.
	www.all-science-fair-projects.com /science_fair_projects_encyclopedia/Oxygen (1073 words)

	Oxygen (Site not responding. Last check: 2007-10-23)
		A notable application of oxygen as a very low-pressure breathing gas, is in modern spacesuits, where use of nearly pure oxygen at a total ambient pressure of about one third normal, results in normal blood partial pressures of oxygen.
		Conversely, free oxygen is produced in the biosphere through photolysis (light-driven oxidation and splitting) of water during photosynthesis in cyanobacteria, green algae and plants, thus closing the biological water-oxygen redox cycle.
		In nature, free oxygen is produced by the light-driven splitting of water during oxygenic photosynthesis in cyanobacteria, green algae and plants.
	www.infoforyou.org /input.php?title=Oxygen (3560 words)

	Read about Oxygen at WorldVillage Encyclopedia. Research Oxygen and learn about Oxygen here! (Site not responding. Last check: 2007-10-23)
		At standard temperature and pressure, oxygen is predominantly found as a gas consisting of a diatomic molecule with the chemical formula O
		ethers in which the oxygen atom is part of a ring of three atoms.
		Apollo 1 crew on a test launchpad spread so rapidly because the pure oxygen atmosphere was at normal atmospheric pressure instead of the one third pressure that would be used during an actual launch.
	encyclopedia.worldvillage.com /s/b/Oxygen (721 words)

	Oxygen - WikiBioPharm
		Oxygen is the second most common element on Earth composing around 49% of the mass of Earth's crustLos Alamos National Laboratory – Oxygen and 28% of the mass of Earth as a whole, and is the third most common element in the universe.
		Oxygen was more quantitatively discovered by the Swedish pharmacist Carl Wilhelm Scheele sometime before 1773, but the discovery was not published until after the independent discovery by Joseph Priestley on August 1, 1774, who called the gas dephlogisticated air (see phlogiston theory).
		Oxygen is the most common component of the Earth's crust (49% by mass), the second most common component of the Earth as a whole (28.2% by mass), and the second most common component of the Earth's atmosphere (20.947% by volume).
	www.wikibiopharm.com /index.php?title=Oxygen (1537 words)

	oxygen \| English \| Dictionary & Translation by Babylon
		Oxygen (IPA:) is a chemical element with the chemical symbol O and atomic number 8.
		Unbound oxygen (also called molecular oxygen, or dioxygen, O2, a diatomic molecule) first appeared in significant quantities on Earth during the Paleoproterozoic era (between 2.5 billion years ago and 1.6 billion years ago) as a product of the metabolic action of early anaerobes (archaea and bacteria).
		Oxygen The physical elements are merely the grossest manifestations or reflections on this material plane of invisible, intangible spiritual originants.
	www.babylon.com /definition/oxygen/English (359 words)

	Pulmonary alveolus Summary
		Oxygen moves from the alveoli (high oxygen concentration) to the blood (lower oxygen concentration, due to the continuous consumption of oxygen in the body).
		Oxygen dissolved in the blood may diffuse into red blood cells and bind to hemoglobin.
		The rest of the difference is due to the continual uptake of oxygen by the pulmonary capillaries, and the continual diffusion of CO out of the capillaries into the alveoli.
	www.bookrags.com /Pulmonary_alveolus (1843 words)

	oxygen
		The atmospheric abundance of free oxygen in later geological epochs and up to the present has been largely driven by photosynthetic organisms, roughly half by phytoplankton and algae in the oceans and half from terrestrial plants.
		Oxygen often finds considerable use as an oxidizer, with only fluorine having a higher electronegativity.
		Priestley published his findings in 1775 and Scheele in 1777; consequently Priestley is usually given the credit.
	wikipedia.openfun.org /en/wikipedia/o/ox/oxygen.html (998 words)

	Hypoxia (disambiguation) Summary
		Anaemic hypoxia is a state where the oxygen content of blood is low and the cause is anaemia, a decrease in the amount of haemoglobin in the blood.
		Environmental hypoxia or oxygen depletion, a reduced concentration of dissolved oxygen in a water body leading to stress and death in aquatic organisms.
		Oxygen saturation is a relative measure of the amount of oxygen that is dissolved or carried in a given medium and is therefore a measure of hypoxia or hypoxic conditions.
	www.bookrags.com /Hypoxia_(disambiguation) (762 words)

	Oxygen
		A notable application of oxygen as a very low-pressure breathing gas, is in modern spacesuits, where use of nearly pure oxygen at a total ambient pressure of about one third nor mal, results in normal blood partial pressures of oxygen.
		Conversely, free oxygen is produced in the biosphere through photolysis (light-driven oxidation and splitting) of water during photosynthesis in cyanobacteria, gre en algae and plants, thus closing the biological water-oxygen redox cycle.
		On the other h and, breathing 100% oxygen in space applications (such as in some modern spacesuits, or in early spacecraft such as the Apollo spacecraft), causes no damage due to the low total pressures (30% to 33% sea-level) used.
	en.filepoint.de /info/Oxygen (3560 words)

	CalendarHome.com - - Calendar Encyclopedia (Site not responding. Last check: 2007-10-23)
		Most modern military submarines are able to generate oxygen for their crew by electrolysis of water.
		Poisonous gases are removed, and oxygen is replenished by use of an oxygen bank located in a main ballast tank.
		The oxygen in the air is sometimes kept a few percent less than atmospheric concentration to reduce fire danger.
	encyclopedia.calendarhome.com /cgi-bin/encyclopedia.pl?p=Submarine (7623 words)

	Oxygen . Enpsychlopedia
		Oxygen is slightly soluble in water, but naturally occuring disolved amounts support all ocean animal life (see below).
		Oxygen is the most common component of the Earth's crust (49% by mass), the second most common component of the Earth as a whole (28% by mass), the most common component of the world's oceans (86% by mass), and the second most common component of the Earth's atmosphere (20.947% by volume), second to nitrogen.
		On the other hand, breathing 100% oxygen in space applications (such as in some modern spacesuits, or in early spacecraft such as the Apollo spacecraft), causes no damage due to the low total pressures (30% to 33% sea-level) used [1].
	enpsychlopedia.org /psypsych/Oxygen (2654 words)

	Oxygen - Wikipedia, the free encyclopedia
		The presence of free oxygen drove most of the organisms then living to extinction.
		Oxygen was again discovered by the Swedish pharmacist Carl Wilhelm Scheele sometime before 1773, but the discovery was not published until after the independent discovery by Joseph Priestley on August 1, 1774, who called the gas dephlogisticated air (see phlogiston theory).
		Oxygen is the second most common component of the earth's atmosphere (20.947% by volume).
	88.208.194.172 /wiki/index.php/Oxygen (1118 words)

	oxygen (Site not responding. Last check: 2007-10-23)
		At standard temperature and pressure, oxygen is found as a gas consisting of a diatomic molecule, with the chemical formula O
		In the 19th century, oxygen was often mixed with nitrous oxide to promote a kind of analgesic effect; indeed such a mixture (
		Oxygen has three stable isotopes and ten known radioactive isotopes.
	www.writen4u.com /public/oxygen.asp (995 words)

	Oxygen - ToseekA Search Results
		The hemoglobin concentration for this subject is 145 g per liter of whole blood and the oxygen solubility is 0.225 ml l-1 kPa-1 (0.03 ml/mm Hg/liter of blood).
		I do not need oxygen tanks as my Inogen One Concentrator purifies air and delivers oxygen to me. It is small,fits under the seat and runs on batteries or can be connected to a power port.
		A mixture of oxygen and other gases, administered to a patient to help him or her to breathe.
	www.toseeka.com /subject/Oxygen (850 words)

	Learn more about Earth in the online encyclopedia. (Site not responding. Last check: 2007-10-23)
		It has a relatively thick atmosphere composed of 78% nitrogen, 21% oxygen, and 1% argon, plus traces of other gases including carbon dioxide and water.
		Without hydrogen, the oxygen interacts with the surface and is bound up in solid minerals.
		The land-based ecosystem depends upon topsoil and fresh water, and the oceanic ecosystem depends upon dissolved nutrients washed down from the land.
	www.onlineencyclopedia.org /e/ea/earth_1.html (2245 words)

	NationMaster - Encyclopedia: Earth (Site not responding. Last check: 2007-10-23)
		Carbon dioxide is a chemical compound composed of one carbon and two oxygen atoms.
		Radiation as used in physics, is energy in the form of waves or particles.
		The tectonic plates of the world were mapped in the second half of the 20th century.
	www.nationmaster.com /encyclopedia/Earth (2579 words)

	oxygen - OneLook Dictionary Search
		Oxygen : A to Z of Terms related to the Thermal Spray Process and Surface Engineering [home, info]
		Phrases that include oxygen: biochemical oxygen demand, oxygen debt, dissolved oxygen, oxygen deficit, biological oxygen demand, more...
		Words similar to oxygen: o, oxygenic, oxygenless, atomic number 8, more...
	www.onelook.com /?w=oxygen&ls=a (402 words)

	change help: yesterday i died - finally… it’s been a long time coming. - Help.com
		Aerobic organisms require oxygen to create energy via respiration, in the form of energy-rich molecules such as glucose.
		Drowning is death caused by suffocation when a liquid causes interruption of the body's absorption of oxygen from the air leading to asphyxia.
		O: one molecule of water is composed of two hydrogen atoms covalently bonded to a single oxygen atom.
	help.com /post/63096-yesterday-i-died-finally-i (1674 words)

	Moon - ExampleProblems.com
		For researchers, KREEP is a convenient tracer, useful for reporting the story of the volcanic history of the lunar crust and chronicling the frequency of impacts by comets and other celestial bodies.
		The lunar crust is composed of a variety of primary elements, including uranium, thorium, potassium, oxygen, silicon, magnesium, iron, titanium, calcium, aluminum and hydrogen.
		The presence of usable quantities of water on the Moon would be an important factor in rendering lunar habitation cost-effective, since transporting water (or hydrogen and oxygen) from Earth would be prohibitively expensive.
	www.exampleproblems.com /wiki/index.php/Moon (5208 words)

	Facts On Oxygen (Site not responding. Last check: 2007-10-23)
		Very many of the crucial facts on oxygen and our need for it can be established more or less reliably.
		hay Facts on oxygen Date 12.10.04 11:38 AM From: Grease12 This would be a great Show to put on This staon.
		Oxygen Energy Level and Oxygen Gas and Oxygen Cycle and Important Facts on Oxygen and Is Oxygen a Solid.
	www.oralulcer.info /info/Facts-on-Oxygen (232 words)

	Oxygen Encyclopedia Article, History, Biography at Variedtastes.com (Site not responding. Last check: 2007-10-23)
		Looking For oxygen - Find oxygen and more at Lycos Search.
		Features back care items, walkers, diabetic supplies, daily living aids, bathroom safety gear, and more.
		Find oxygen - Your relevant result is a click away!
	www.variedtastes.com /encyclopedia/Oxygen (1096 words)

	UV radiation news
		The shortest wavelength band, UVC, is completely absorbed by ozone and normal oxygen in the atmosphere.
		This opacity is due to the strong absorption of light of these wavelengths by oxygen in the air.
		Pure nitrogen (less than about 10 ppm oxygen) is transparent to wavelengths in the range of about 150—200 nm.
	www.mongabay.com /reference/eco/UV_radiation.html (893 words)

	Oxygen - Unipedia (Site not responding. Last check: 2007-10-23)
		Essentials of Oxygenation: Implication for Clinical Practice (Jones and Bartlett Series in Nursing)
		The Brain Without Oxygen : Causes of Failure - Physiological and Molecular Mechanisms for Survival
		Oxygen Healing Therapies : For Optimum Health and Vitality
	www.unipedia.info /Oxygen.html (1120 words)

	Earth (Site not responding. Last check: 2007-10-23)
		The second event is a chemical discontinuity between ultramafic cumulates and tectonized harzburgites which has been observed from deep parts of the oceanic crust that have been obducted into the continental crust and preseved as ophiolite sequences.
		Namely, the large amount of free diatomic oxygen is maintained through solar energy by the Earth's plants, and without the plants supplying it, the oxygen in the atmosphere will over geological timescales combine with material from the surface of the Earth.
		Free oxygen in the atmosphere is a signature of life.
	abcworld.net /Earth.html (3775 words)

	Oxygen at the b2bYellowpages.com B2B directory. - (Site not responding. Last check: 2007-10-23)
		Find information on Oxygen Interactive with operations and products, financials, officers, competitors and more at Hoover's.
		We're sorry, but there are currently no member listings for "Oxygen" in this category.
		Be the first to list a business for Oxygen in this category.
	www.b2byellowpages.com /directory/b2b_chemicals/oxygen (198 words)

	Oxygen (disambiguation) - Encyclopedia Glossary Meaning Explanation Oxygen (disambiguation) (Site not responding. Last check: 2007-10-23)
		Oxygen (disambiguation) - Encyclopedia Glossary Meaning Explanation Oxygen (disambiguation).
		Here you will find more informations about Oxygen (disambiguation).
		The orginal Oxygen (disambiguation) article can be editet
	www.encyclopedia-glossary.com /en/Oxygen-disambiguation.html (76 words)

	Best4WebShopping (Site not responding. Last check: 2007-10-23)
		Oxygen Elements Plus supplies the body with a steady diet of free oxygen, hydrogen, full spectrum minerals, amino acids, and enzymes, all the while cleansing your cells.
		OXYGEN ODYSSEY Colosan, Auntie Trace and Oxy Dan Is the oxygen triumvirate that we have been recommending for...
		Oxygen Regulator E Style 0-8, size 1 ea
	www.best4webshopping.com /search.php?keyword=oxygen (4181 words)

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