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Topic: Oxidises

In the News (Thu 24 Dec 09)

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	`Coconut oil, healthiest cooking medium'
		Oxidised oils have been known to induce damage to intestinal tissues and blood vessel walls and to cause numerous organ lesions in animals.
		Some experts cite the fact that these oils have been found to contribute to the development of atherosclerosis or hardening of the arteries more frequently than is attributable to cholesterol or saturated fat.
		The logical conclusion, then, is to avoid using oils that have been heat processed and to not to cook in oils in high temperatures, according to Mr Weil.
	www.blonnet.com /businessline/2001/06/28/stories/072815b5.htm (559 words)

	manganese
		The pale brown precipitate is oxidised to darker brown manganese(III) oxide in contact with oxygen from the air.
		Acidified potassium manganate(VII) tends to be a rather destructively strong oxidising agent, breaking carbon-carbon bonds.
		It is so strongly coloured that it is impossible to see when all the crystals you have used have dissolved, and over a period of time it oxidises the water it is dissolved in to oxygen.
	www.chemguide.co.uk /inorganic/transition/manganese.html (1049 words)

	The chemistry of steelmaking - the basic oxygen furnace structure (Site not responding. Last check: 2007-11-07)
		This oxidises carbon and the other unwanted elements in the hot metal.
		Carbon is oxidised to carbon monoxide gas, which passes from the converter to a cleaning plant.
		The conditions in the Blast Furnace are sometimes described as reducing but the conditions in the steelmaking converter are oxidising.
	www.schoolscience.co.uk /content/4/chemistry/steel/msch4pg1.html (252 words)

	intas 94-1195 (Site not responding. Last check: 2007-11-07)
		Laccase is a copper-containing oxidase which utilises molecular oxygen as oxidant and oxidises e.g.
		The efficiency and capacity of these enzymes to oxidise aromatic compounds are investigated to obtain fundamental knowledge which is needed to improve catalytical properties and facilitate genetic modification of these enzymes.
		Research goals are: to produce and characterise laccase and other related oxidative enzymes of Phlebia radiata, Phlebia tremellosa, Panus tigrinus, Coriolus versicolor, Agaricus bisporus, Armillaria mellea and other related fungi; to study substrate specificities of laccases and oxidases from selected fungi; to clarify catalytic properties of the enzymes through detailed structural analysis of enzyme proteins.
	www.intas.be /catalog/94-1195.htm (785 words)

	Bits4Doors - Materials jargon
		Tarnishing is the oxidisation of the metal, equivalent to rusting in steel.
		Aluminium actually oxidises quite quickly, but as it does so it forms a protective layer of oxidised metal over its surface.
		In the case of the "antiqued style" bronze the colour produced is a unique iridescent patern that reflects back various colours whilst the underlying shade is a mid bronze.
	www.bits4doors.co.uk /jargon5.php (1312 words)

	BBC News \| HEALTH \| Apple juice 'protects the heart'
		When LDL oxidises, or deteriorates in the blood, plaque accumulates along the walls of the coronary artery and causes atherosclerosis (a dangerous thickening of the artery).
		Lag time measurements are commonly used to determine how long it takes for cholesterol to oxidise or break down when exposed to certain chemicals.
		A longer lag time indicates a greater delay in the start of oxidation, which is associated with a reduced risk of heart disease.
	news.bbc.co.uk /hi/english/health/newsid_1180000/1180175.stm (540 words)

	RealClassic.co.uk: Honda CB400F (Site not responding. Last check: 2007-11-07)
		It rusts away to a flaky mess that will eventually be dug up by an archaeologist who can reconstruct an entire Saxon village on the basis of finding a single mudguard stay.
		Aluminium is different; when it oxidises it gets bigger; that white dusting on your crankcases can be polished off to reveal the smooth original finish beneath.
		The 400-4 is fitted with a single piston brake caliper biting onto a shiny stainless steel disc.
	www.realclassic.co.uk /hon030227.html (925 words)

	[No title]
		Since the toxicity of ferrous sulphate has been reported in the literature, concerns have been expressed to the effect that it and other soluble ferrous salts, such as the chloride and the nitrate, may present toxicity to the wider aquatic environment.
		However, it is generally known that the ferrous ion, Fe(II), is unstable when its solutions are exposed to air, and that it oxidises to the ferric ion, Fe(III), which then forms the familiar insoluble, hydrated, amorphous, gelatinous precipitate, written as Fe(OH)3, ferric hydroxide.
		A homogeneous reaction is one that occurs in a single phase, such as water or gas.
	ecb.jrc.it /classlab/1401a13_IND_Fe_sulfate.doc (2951 words)

	Redox - Wikipedia, the free encyclopedia
		Reduction can also be considered to be the reducing of an atom's positive charge, and oxidation its opposite (gaining positive charge).
		Substances that have the ability to oxidize (Commonwealth English oxidise) other substances are said to be oxidative and are known as oxidizing agents, oxidants or oxidizers.
		Put in another way, the oxidant removes electrons from the substance.
	en.wikipedia.org /wiki/Oxidation (810 words)

	Lateral Science - Phosphorus Topics
		If the result is the same, then the flickering green-glow type will o` the wisps could be accounted for, by the luminous oxidisation of hydrogen phosphide vapour, carried into the atmosphere by methane (non-ignited) or carbon dioxide gas.
		When white phosphorus is exposed to the atmosphere it oxidises, with the evolution of white fumes and accompanied by a faint green glow.
		The phosphorus vapour carried along with the gas oxidises in the air, and a green flame appears at the top of the exit tube.
	www.lateralscience.co.uk /phos (1981 words)

	New Page 0
		In reality it is a battery that uses oxygen to oxidise lead which produces a potential difference.
		The lead oxidises in the presence of Oxygen, which draws electrons from the electrolyte across from the cathode.
		The problem is that not all cells are the same and as they age the anode oxidises and the voltage drops.
	www.btinternet.com /~madmole/DiverMole/DMCells.htm (3597 words)

	Manbir Online ... Free Radicals and Antioxidants
		The free radicals and the LDL (Low density lipids) are involved in processes which finally lead to the formation of 'Foam Cells' from which atherosclerotic plaques evolve.
		Oxidised LDL also exerts other actions that add to the development of atherosclerosis.
		Free radicals also stimulate production of prostaglandins that cause vaso-constriction and also help in the aggregation of the platelets.
	www.manbir-online.com /cardiac/antioxi.1.htm (380 words)

	Waterwise Technology - faq on ozone in cooling towers
		As an oxidising agent it is 51% stronger than chlorine and has a kill rate of 3.125 times faster Ozone readily oxidises organic material in bacterial membranes which weakens the cell wall and leads to cell rupture causing immediate death of the cell.
		Ozone oxidises most organics and reduced many inorganic materials to a lower state that is more biodegradable.
		Ozone is listed as an oxidising biocide in L8 and has been formally tested by the DoE who confirmed the effectiveness as a biocide without the need for secondary biocide or dispersant.
	www.waterwise.co.uk /ww_freq.htm (1686 words)

	Cerium - Cerium (Ce) Properties and Applications (Site not responding. Last check: 2007-11-07)
		Cerium is an iron-grey lustrous metal, and is malleable and oxidises very readily at room temperature, especially in moist air.
		As ceric sulphate it is used extensively as a volumetric oxidising agent in quantitative analysis.
		Cerium compounds are used in the manufacture of glass, as a component and a decolouriser.
	www.azom.com /details.asp?ArticleID=592 (443 words)

	xx
		Ozone is a very powerful oxidant, which oxidises organic and inorganic material in the air and water, including bacteria, viruses, microbes and fungal spores, in a wet or dry environment.
		For this reason the use of Ozone is one of the most effective methods of sanitising any area, whether domestically or commercially.
		Ozone is a highly reactive gas that is produced when oxygen interacts with either electricity or UV light.
	www.bcinternational.co.za /ozone/food_processing.htm (937 words)

	Ozone Therapy
		If there is insufficient oxygen at the cellular level the burn will be incomplete and carbon monoxide and lactic acid and toxic build up will be formed and disease will result.
		Ozone will provide oxygen to come in and oxidise these toxins.
		In addition, ozone will oxidise the toxins which caused the original problem, and thus prevent recurrence of the problem This is in contrast to chemotherapy which is massively immune-suppressive, and radiation which itself causes cancer.
	www.natura.org.uk /ozone.htm (1390 words)

	[No title]
		The resulting solution required 25.00 cm3 of 0.0200 mol dm-3 potassium manganate (VII) to oxidise the Fe2+ ions in the solution to Fe3+ ions.
		Use this to calculate the percentage by mass of Fe2+ ions in this sample of lawn sand.
		It is dissolved in acid, which oxidises it to Fe2+, and made up to 250 cm3.
	mysite.wanadoo-members.co.uk /chemsheets2/A2513.doc (798 words)

	Ozone
		Can oxidise some pesticides and herbicides which may be of help in reducing losses through diseases such as Taura Syndrome in shrimps.
		When the ozone is no longer taking the nitrite out of the water, it can take the bacterial colony up to 24hours to multiply so that they can cope with the additional loading.
		Oxidises ammonia to nitrate in seawater (and freshwater > pH9)
	www.aquatext.com /tables/ozone.htm (404 words)

	Ot1's Homebuilt Hash Press pg. 1 (Site not responding. Last check: 2007-11-07)
		Hash made with undried skuff oxidises very quickly, loosing thc rapidly and often has mould growing through it after only a few months of storage.
		Because of the continual kneading needed to bring skuff together when hand pressing, a lot of the capitate tricomes heads are shattered throughout the mass releasing their oil.
		This oxidises fairly rapidly even as it is being pressed with more and more air being mixed in as it is being worked, the whole mass becoming fl right through from oxidised oil.
	www.overgrow.com /articles/3 (598 words)

	Fast Cyclic Voltammetry (Site not responding. Last check: 2007-11-07)
		A voltage waveform is applied to an inert carbon microelectrode whose tip is implanted in a given brain region.
		At a given voltage any monoamine present at the electrode surface oxidises and surrenders electrons to the electrode.
		These form a current that is proportional to the concentration of monoamine at the electrode surface.
	www.mds.qmw.ac.uk /anae/fcv.htm (457 words)

	Amazon.co.uk: Kitchen & Home (Site not responding. Last check: 2007-11-07)
		It dents, scratches and, above all, oxidises (discolours).
		Others don't worry so much about the appearance and learn to treasure the rustic patina copperware quickly acquires.
		It stains, oxidises and reacts with certain foods, especially those that are high in acid, such as tomatoes.
	www.amazon.co.uk /exec/obidos/tg/feature/-/456430 (1570 words)

	Definitions of oxidation and reduction (redox)
		An oxidising agent is substance which oxidises something else.
		A commonly used oxidising agent is potassium dichromate(VI) solution acidified with dilute sulphuric acid.
		Oxidising agents give oxygen to another substance or remove hydrogen from it.
	www.chemguide.co.uk /inorganic/redox/definitions.html (544 words)

	Elemente - Börse
		It has an abundance of 3.3 ppm in the earth's crust and is always found in combination with other lanthanides.
		The metal is soft and malleable, oxidises slowly in air and reacts with water.
		Applications of the metal are limited, research being the principal area of its use.
	www.smart-elements.com /?linkid=kontent/?arg=zoom&art=196&element=Yb&linkid=ewiki-Yb (199 words)

	Frank Allart - Bronze
		Offered in two forms - highly polished or antiqued - the real beauty of bronze furniture is how the surface finish matures.
		In the highly-polished form, the finish will either maintain its brilliance through handling or age gracefully as the bronze oxidises.
		The oxidized form is offered as an original finish and has always been a popular choice with discerning specifiers.
	www.allart.co.uk /bronze.html (144 words)

	Allicin - Molecule of the Month Jan 2001
		It is slightly soluble in water and soluble in alcohol, which is what would be expected of an organic molecule containing OH.
		In the body, it oxidises the haemoglobin in the blood to methemoglobin.
		Being a strongly oxidising compound, it protects garlic from attack by bacteria and insects by disabling the enzymes that are found in the substrate necessary for infections to occur, thus acting as a natural insecticide.
	www.chem.ox.ac.uk /mom/allicin/allicin.html (323 words)

	Ozone Sanitation Systems - Maintaining Water Quality - Disinfectant Bacteria Viruses (Site not responding. Last check: 2007-11-07)
		Chlorine use is minimised and chloramines are eliminated.
		The use of ozone for aquariums, zoos and hatcheries is accepted worldwide.
		Ozone destroys bacteria, inactivates viruses and oxidises organics, aiding the filtration.
	www.aquionics.com.au /products/ozone.html (375 words)

	Answer 35
		Remember that reducing agents give up their electrons to oxidising agents and consequently are oxidised, and oxidising agents remove electrons from reducing agents and consequently are reduced.
		Electrons go from the reduced part of a redox pair of more negative (or less positive) redox potential to the oxidised part of a redox pair of more positive (or less negative) redox potential.
		oxidises Cu to Cu The stronger oxidant part of a redox pair of more positive (or less negative) redox potential pulls the electrons from the reduced part of a redox pair of more negative (or less positive) redox potential.
	www.lsbu.ac.uk /biology/biolchem/qs/ans_35.html (146 words)

	Toxicity of lead (Site not responding. Last check: 2007-11-07)
		Lead is a lustrous, bluish metal; it is relatively soft, extremely malleable and ductile and is a poor conductor of electricity.
		It is highly resistant to corrosion but oxidises and flens when it comes into contact with air.
		Lead piping bearing the insignia of the Roman Empire, once used for sewerage plumbing, can still be found.
	www.phyles.ge.cnr.it /htmling/toxicityoflead.html (1499 words)

	Environmental Green Bins Limited
		A biodegradable plastic bag is a plastic bag that will degrade as a result of naturally occurring organisms like bacteria, fungi and algae.
		"Photo-degradable" (degrades in natural daylight), "Oxidative-degradable" (degrades - "oxidises" - in air) and "Hydrolytic-degradable" (degrades in water).
		However, because light, air and water may all be absent from landfills, "Biodegradable" plastic is best used for bags because most will ultimately be discarded in landfills.
	www.greenbins.co.nz /faq.html (818 words)

	The Chlorine Dioxide Solution Company
		Chlorine dioxide oxidises many inorganic and organic odour-causing compounds, with reaction paths that are generally very different from other oxidants.
		→ SO Between pH 5 and 9, 4.5 parts by weight of chlorine dioxide instantaneously oxidises 1 part by weight of a mercaptan (expressed as sulphur) to the respective sulphonic acid/sulphonate compound, destroying the mercaptan odour.
		At pH above 7, an average 5 parts by weight of chlorine dioxide oxidises 1 part by weight of a secondary aliphatic amine (expressed as nitrogen) removing all traces of amine odour. The higher the pH of the reaction mixture (chlorine dioxide and tertiary and/or secondary aliphatic amines), the more rapidly oxidation proceeds.
	www.chlorinedioxide.co.uk /odour_control.html (243 words)

	Bronze Door Furniture FAQ and Maintenance
		In the case of the "antiqued style" (RBMA), the colour produced is a unique iridescent patina that reflects back various colours whilst the underlying shade is a mid bronze.
		There will always be some variations in appearance, it is in the nature of the finish and is one characteristic that makes these items unique and so appealing.
		The highly polished finish will maintain its appearance, but age gracefully as the bronze gradually oxidises.
	www.bernards.co.uk /bronze_door_furniture_faq.htm (1104 words)

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