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  • # '''Physical reactivation''': The precursor is developed into activated carbons using ga ...ously with the chemical activation. Chemical activation is preferred over physical activation owing to the lower temperatures and shorter time needed for acti
    41 KB (5,738 words) - 16:47, 27 September 2010
  • ==Physical properties== ...It is also used in various brands of [[bottled water]], as well as in bulk quantities for [[fossil fuel]] [[drilling]] purposes.
    14 KB (1,921 words) - 16:49, 27 September 2010
  • ...oxide is frequently used to relieve pain associated with [[childbirth]], [[Physical trauma|trauma]], [[dentistry|oral surgery]], and [[heart attack]]s. ===Chemical/physical===
    61 KB (8,728 words) - 16:50, 27 September 2010
  • ...sses in the plant produce [[codeine]], [[thebaine]], and in some cases low quantities of [[hydromorphone]], [[dihydromorphine]], [[dihydrocodeine]], tetrahydroth ...ance dependence|dependence]] develop rapidly, although [[Physical property|physical]] addiction may take several months to develop.
    87 KB (12,376 words) - 16:51, 27 September 2010
  • ...to two-to-four weeks due to concerns of [[drug tolerance|tolerance]] and [[physical dependence|dependence]].<ref name="tembnf">{{cite web |url= http://bnf.org/ ...e=44 |issue=5 |pages=364–9 |pmid=38627}}</ref> slurred speech, decreased physical performance, numbed emotions, reduced alertness, muscle weakness, blurred v
    45 KB (6,129 words) - 22:16, 19 September 2010
  • ...driasis''' is an excessive dilation of the [[pupil]] due to [[disease]], [[Physical trauma|trauma]] or the use of [[drug]]s. Normally, the pupil dilates in the ...naturally responsible for normal 5-HT2A stimulation. Hence, in sufficient quantities serotonin is mydriatic and can even be mildly psychedelic, though the poten
    9 KB (1,223 words) - 09:40, 20 September 2010
  • ...nted in physical theories by [[constitutive relation]]s. A large class of physical behaviors can be represented by linear material models that take the form o ...e <math>\mathbf{d},\mathbf{f}</math> are two vectors representing physical quantities and <math>\boldsymbol{K}</math> is the second-order material tensor. If we
    23 KB (2,910 words) - 10:07, 20 September 2010
  • ...e used in jewelry because of their [[Lustre (mineralogy)|lustre]] or other physical properties that have aesthetic value. Rarity is another characteristic that Physical characteristics that make a colored stone valuable are color, clarity to a
    24 KB (3,690 words) - 10:08, 20 September 2010
  • Two important quantities that are used to describe shape memory effects are the strain recovery rate ...ub>perm</sub>'', is the temperature that must be exceeded to establish the physical crosslinks responsible for the permanent shape. The switching segments, on
    21 KB (2,974 words) - 10:09, 20 September 2010
  • Kumar, A., et al., "Smart Polymers: Physical Forms & Bioengineering Applications", Progress in Polymer Science, Vol. 32, ...s have the potential to cut [[carbon emissions]] and reduce CO<sub>2</sub> quantities in the atmosphere. This is because the CO<sub>2</sub> released when they de
    68 KB (9,959 words) - 10:10, 20 September 2010
  • ...operties. Ion-exchange is the only practical way to separate them in large quantities. This application was developed in the 1940's by [[Frank Spedding]].
    10 KB (1,392 words) - 10:10, 20 September 2010
  • ...eristics during each recycling cycle, which are detectable by chemical and physical laboratory analysis. ...extruder—to an intrinsic viscosity of about 0.30 dℓ/g by adding small quantities of ethylene glycol and by subjecting the low viscosity melt stream to an ef
    43 KB (6,272 words) - 10:11, 20 September 2010
  • ...resins must be used in large amounts to purify a given product, presenting physical purification issues.<ref>Carlisle, Steven J. (2001)</ref> Furthermore, when ...resins are utilized in situations where swelling of the resins may cause a physical barrier to reaction purification. Contain much higher content of divinylben
    9 KB (1,190 words) - 10:12, 20 September 2010
  • ...Each petroleum variety has a unique mix of [[molecule]]s, which define its physical and chemical properties, like color and [[viscosity]]. ...ankton]] and [[algae]], which had settled to a sea or lake bottom in large quantities under [[anoxic sea water|anoxic conditions]] (the remains of prehistoric [[
    69 KB (9,885 words) - 10:12, 20 September 2010
  • ...s]].<ref>{{cite book|last=Levine|first=Ira N.|coauthors=|authorlink=|title=Physical Chemistry|edition=5th|publisher=McGraw-Hill|location=Boston|year=2001|isbn= *Physical deformation of the particle (e.g., stretching) may increase the van der Waa
    27 KB (3,735 words) - 10:13, 20 September 2010
  • .../> It is weakly radioactive and remains so because of its long [[half-life|physical half-life]] (4.468 billion years for [[uranium-238]]), but has a considerab ...nium begins with such a low percentage of U-235, enrichment produces large quantities of depleted uranium. For example, producing 1 [[kilogram|kg]] of five perce
    80 KB (11,721 words) - 10:13, 20 September 2010
  • ===Physical properties=== ...untains]] and in North and South America. Small but commercially important quantities are also found in [[pentlandite]] extracted from [[Greater Sudbury|Sudbury]
    39 KB (5,430 words) - 10:13, 20 September 2010
  • ...|Incandescent lights]] produce a large amount of heat in addition to large quantities of infrared radiation, which is likewise damaging to the fibers in antique '''What additives and cleaning aids are needed?''' This can include physical supplies ([[water]], screens, a vacuum cleaner), as well as chemical ([[wat
    30 KB (4,909 words) - 10:15, 20 September 2010
  • ...built by Roman engineers. Because concrete is quite strong in resisting [[Physical compression|compressive loads]], but has relatively poor [[Tensile stress|T ...oncrete escaping out of the formwork in a ''form blowout'', often in large quantities.
    15 KB (2,379 words) - 10:19, 20 September 2010
  • A matured lime putty displays a physical property known as "[[thixotropic]]" which means that when a lime putty is p ...between non-hydraulic lime and OPC. The limestone used contains sufficient quantities of [[clay]] and/or [[silica]]. The resultant product will contain [[Belite|
    15 KB (2,479 words) - 10:21, 20 September 2010

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