Qwika Toolbar for IE and Firefox users!

Home > English

Searching 21,964,380 articles in 1,158 wikis.
Beta release. Any comments please contact us
Press release (Feb 17): New search engine helps bridge the language gap in Wikipedia
Press release (Apr 4): Qwika search engine now indexes 1158 wikis in 12 languages

Search wikis:

Isotopic signature
Isotopic signature An isotopic signature (also isotopic fingerprint) is a ratio of stable or ... Similarly, carbon in inorganic carbonates shows little isotopic fractionation, while carbon in materials originated by ...
http://en.wikipedia.org/wiki/Isotopic_signature - 8k - Cached - Similar pages

Mass-independent fractionation
Mass-independent fractionation A kinetic system involving at least three ... it is termed a mass-independent effect. Isotopic substitution can effect the symmetry of the ... these two effects, the only effect that isotopic substitution could have on reaction rate would ...
http://en.wikipedia.org/wiki/Mass-independent_fractionation - 2k - Cached - Similar pages

Isotope Mass Spectrometry
... This leads to measurable effects on the isotopic composition of samples due to their biological ... to vaporise the normal water so isotope fractionation occurs during the process of evaporation. Thus ... water SMOW) will exibit a quite detectable isotopic ratio difference when compared to arctic snowfall ... tool to measure the variation in the isotopic ratio of hydrogen in the sample, it ... This is based on the variation in isotopic fractionation of oxygen by biological systems ...
http://en.wikipedia.org/wiki/Isotope_Mass_Spectrometry - 5k - Cached - Similar pages

Isotopes of uranium
... isotopes. However, it has a characteristic terrestrial isotopic composition and thus an atomic mass can ... given. Table nuclidesymbol Z(p) N(n) isotopic mass (u) half-life nuclearspin representativeisotopiccomposition(mole ... 16.8(5) min 0+ Notes Evaluated isotopic composition is for most but not all ... exceptional samples are known in which the isotopic composition lies outside the reported range. The ... been subjected to an undisclosed or inadvertent isotopic fractionation. Substantial deviations from the given ...
http://en.wikipedia.org/wiki/Isotopes_of_uranium - 8k - Cached - Similar pages

Isotopes of neon
... u Table nuclidesymbol Z(p) N(n) isotopic mass (u) half-life nuclearspin representativeisotopiccomposition(mole ... ms [>1.5 µs] 0+ Notes The isotopic composition refers to that in air. The ... exceptional samples are known in which the isotopic composition lies outside the reported range. The ... been subjected to an undisclosed or inadvertent isotopic fractionation. Substantial deviations from the given mass ...
http://en.wikipedia.org/wiki/Isotopes_of_neon - 6k - Cached - Similar pages

Isotopes of krypton
... u Table nuclidesymbol Z(p) N(n) isotopic mass (u) half-life nuclearspin representativeisotopiccomposition(mole ... 10# ms [>300 ns] 0+ Notes The isotopic composition refers to that in air. Geologically ... exceptional samples are known in which the isotopic composition lies outside the reported range. The ... been subjected to an undisclosed or inadvertent isotopic fractionation. Substantial deviations from the given mass ...
http://en.wikipedia.org/wiki/Isotopes_of_krypton - 8k - Cached - Similar pages

Isotopes of xenon
... u Table nuclidesymbol Z(p) N(n) isotopic mass (u) half-life nuclearspin representativeisotopiccomposition(mole ... 10-5) s] 3/2-# Notes The isotopic composition refers to that in air. Geologically ... exceptional samples are known in which the isotopic composition lies outside the reported range. The ... been subjected to an undisclosed or inadvertent isotopic fractionation. Substantial deviations from the given mass ...
http://en.wikipedia.org/wiki/Isotopes_of_xenon - 9k - Cached - Similar pages

Isotopes of lithium
... 6.99 u. As a result, the isotopic composition of lithium is highly variable depending ... samples. Table nuclidesymbol Z(p) N(n) isotopic mass (u) half-life nuclearspin representativeisotopiccomposition(mole ... exceptional samples are known in which the isotopic composition lies outside the reported range. The ... been subjected to an undisclosed or inadvertent isotopic fractionation. Substantial deviations from the given mass ...
http://en.wikipedia.org/wiki/Isotopes_of_lithium - 7k - Cached - Similar pages

Isotopes of chlorine
... u Table nuclidesymbol Z(p) N(n) isotopic mass (u) half-life nuclearspin representativeisotopiccomposition(mole ... exceptional samples are known in which the isotopic composition lies outside the reported range. The ... been subjected to an undisclosed or inadvertent isotopic fractionation. Substantial deviations from the given mass and ... Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from ...
http://en.wikipedia.org/wiki/Isotopes_of_chlorine - 6k - Cached - Similar pages

Isotopes of hydrogen
... cyclotron. Table nuclidesymbol Z(p) N(n) isotopic mass (u) half-life nuclearspin representativeisotopiccomposition(mole ... 20(5)# MeV] 1/2+# Notes The isotopic composition refers to that in water. The ... been subjected to an undisclosed or inadvertent isotopic fractionation. Substantial deviations from the given mass and ... Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from ...
http://en.wikipedia.org/wiki/Isotopes_of_hydrogen - 9k - Cached - Similar pages

 Page:1 2 3 Next >>

Search wikis:


Search: uk de fr ja it nl pt es gr ko zh ru

Try your search on: FactBites (sentence-based)