Through analysis of various strontium isotopes, archaeologists have realized that much of the timber that composes Chacoan construction came from a number of distant mountain ranges, indicative also of the Chaco Road's economic significance.

Besides, the concentration analysis for both protactinium-231 ( half-life 32, 750 years ) and thorium-230 ( half-life 75, 380 years ) allows to improve the accuracy compared to when only one isotope is measured ; this double-isotope method is also weakly sensitive to inhomogeneities in the spatial distribution of the isotopes and to variations in their precipitation rate.

# Cosmochemistry includes the analysis of the distribution of elements and their isotopes in the cosmos.

For instance, the variation in the ratios of stable hydrogen isotopes across latitudes makes it possible to roughly establish the origins of migrant birds using mass spectrometric analysis of feather samples.

Isotope analysis is the identification of isotopic signature, the distribution of certain stable isotopes and chemical elements within chemical compounds.

The three major isotopes used in aquatic ecosystem food web analysis are < sup > 13 </ sup > C, < sup > 15 </ sup > N and < sup > 34 </ sup > S.

While all three indicate information on trophic dynamics, it is common to perform analysis on at least two of the previously mentioned 3 isotopes for better understanding of marine trophic interactions and for stronger results.

In 1956, Urey and his colleague, German scientist Hans Suess, published the first table of cosmic abundances to include isotopes based on meteorite analysis.

For instance, we could apply survival analysis to a mixture of stable and unstable carbon isotopes ; unstable isotopes would decay sooner or later, but the stable isotopes would last indefinitely.

In December 2004, an international team of researchers stated the wall paintings at Bamiyan were painted between the 5th and the 9th centuries, rather than the 6th to 8th centuries, citing their analysis of radioactive isotopes contained in straw fibers found beneath the paintings.

By using stable oxygen isotopes analysis, they were shown to drink fresh water.

Pelletron accelerators are used as analytical tools in many fields, including materials analysis, nuclear physics, semiconductor development and production, pharmaceutical research, and as ultra-sensitive mass spectrometers for carbon dating and the measurement of other rare isotopes.

Some of the petroleum geochemical techniques used are: stable isotopes ; hydrocarbon analysis ( fingerprinting ) of specific organic compounds ( biological organic markers ) with gas chromatography ( GC ) and gas chromatography-mass spectrometry ( GC-MS ); maturity indicators like vitrinite reflectance ; laboratory pyrolysis and analysis ; kerogen typing ; and other more exotic techniques.

By neutron irradiation of objects it is possible to induce radioactivity ; this activation of stable isotopes to create radioisotopes is the basis of neutron activation analysis.

* NRA: Nuclear reaction analysis is sensitive to particular isotopes

Naturally occurring barium ( Ba ) is a mix of six stable isotopes and one very long-lived radioactive primordial isotope, barium-130, recently identified as being unstable by geochemical means ( from analysis of the presence of its daughter xenon-130 in rocks ).

His famous criticism of brother Henry's `` third style '' is surely as subtly, even elegantly, worded an analysis of the latter's intricate air castles as Henry himself could ever have produced.

J. Desaulx suggested in 1877 that the phenomenon was caused by the thermal motion of water molecules, and in 1905 Albert Einstein produced the first mathematical analysis of the motion.

This period is marked by his intense involvement with Remy de Gourmont in the publication of L ' Ymagier, a luxuriously produced " art " magazine devoted to the symbolic analysis of medieval and popular prints.

In September 2009 the Gibraltar Chamber of Commerce released an Economic impact study and analysis of the economies of Gibraltar and the Campo de Gibraltar produced by Professor John Fletcher of Bournemouth University.

While some identical types are clearly used on other pages, other variations, subjected to detailed image analysis, suggested that they could not have been produced from the same matrix.

The surface form produced by the morphophonological rules may consist of phonemes ( which are then subject to ordinary phonological rules to produce speech sounds or phones ), or else the morphophonological analysis may bypass the phoneme stage and produce the phones itself.

MacNevin was passing 100, 000 volt sparks through methane and water vapor and produced " resinous solids " that were " too complex for analysis.

Promethium was first produced and characterized at Oak Ridge National Laboratory in 1945 by the separation and analysis of the fission products of uranium fuel irradiated in a graphite reactor.

But the manuscript was never produced, and British experts in Persian literature were easily able to prove that the translation was in fact based on Edward Heron Allen's analysis of possible sources for FitzGerald ’ s work.

Bacon's philosophy of using an inductive approach to nature — to abandon assumption and to attempt to simply observe with an open mind — was in strict contrast with the earlier, Aristotelian approach of deduction, by which analysis of known facts produced further understanding.

Sraffa's critique focused on the inconsistency ( except in implausible circumstances ) of partial equilibrium analysis and the rationale for the upward slope of the supply curve in a market for a produced consumption good.

In line with these studies, Adorno produced an analysis of the Californian radio preacher Martin Luther Thomas.

Pierre-Simon Laplace produced in 1786 a theoretical analysis giving a basis on which the Moon's mean motion should accelerate in response to perturbational changes in the eccentricity of the orbit of the Earth around the Sun.

A recent analysis by David Dumville that has produced a set of plausible dates for the West Saxon kings has been used by other scholars, but it cannot be regarded as definitive.

Since they are produced automatically without any rational analysis and verification ( see the modern idea of the subconscious ) of whether they are correct or not, they need to be confirmed ( epimarteresis: confirmation ), a process which must follow each assumption.

He produced a series of highly original and influential papers ( collected as " Second Thoughts ", 1967 ) on the analysis of schizophrenia, and the specifically cognitive, perceptual, and identity problems of such patients.

Thus, under this analysis, the commodity produced by an unskilled worker would be more valuable than the same commodity produced by the skilled worker.

Debord's analysis of the spectacle has been influential among people working on television, particularly in France and Italy ; in Italy, TV programs produced by situationist intellectuals, like Antonio Ricci's Striscia la notizia, or Carlo Freccero's programming schedule for Italia 1 in the early 1990s.

In 2010, DNA analysis confirmed that Sphynx hairlessness was produced by an allele of the same gene that produces the Devon Rex ( re ), with the Sphynx allele being incompletely dominant over the Devon allele and both recessive to the wild type.

Initial analysis revealed that no atoms of element 120 were produced providing a limit of 400 fb for the cross section at the energy studied .< ref >

On their return, the Canadian Corps staff officers produced a tactical analysis of the Verdun battles and delivered a series of corps and divisional-level lectures to promote the primacy of artillery and stress the importance of harassing fire and company and platoon flexibility.

In wavelength dispersive analysis, the single-wavelength radiation produced by the monochromator is passed into a photomultiplier, a detector similar to a Geiger counter, which counts individual photons as they pass through.

" In practice, the data produced by the analysis was so large and so complex that while it was available to all interested parties, none of them could challenge the conclusions.

* quantitative analysis ( chemistry ), the measurements of quantities of substances produced in reactions rather than simply noting the nature of the reactions

experiment while other analysis is performed after changes in the

* Static code analysis – the analysis of computer software that is performed without actually executing programs built from that

The separation of components is often performed prior to analysis.

The main advantage is that no dedicated instrument has to be purchased and pyrolysis can be performed as part of routine GC analysis.

There are five types of common features: commitment to perform, ability to perform, activities performed, measurement and analysis, and verifying implementation.

To show how discounted cash flow analysis is performed, consider the following simplified example.

Fundamental analysis is performed on historical and present data, but with the goal of making financial forecasts.

Atterberg limits tests, water content measurements, and grain size analysis, for example, may be performed on disturbed samples obtained from thick walled soil samplers.

These estimates are important for engineers and economists so that proper risk analysis can be performed to influence investment decisions in future infrastructure and to determine the yield reliability characteristics of water supply systems.

A mathematically rigorous convergence analysis of an iterative method is usually performed ; however, heuristic-based iterative methods are also common.

Various adaptations of job-analytic methods include competency modeling, which examines large groups of duties and tasks related to a common goal or process, and practice analysis, which examines the way work is performed in an occupation across jobs.

Geza Vermes has performed a detailed analysis of the Testomonium and modified it to remove what he considers the interpolations.

Many of the forms of analysis performed by lint-like tools are also performed by optimizing compilers, whose prime motivation is to generate faster code.

This phenomenon is likely responsible for the poor correlation between NSAID efficacy and plasma concentration observed in older studies, when specific analysis of the active enantiomer was not performed.

Thus followed the line of Lomonosov and the contributions of the Russian school became more frequent through his disciples, and in the nineteenth century we have great geographers as Vasily Dokuchaev who performed works of great importance as a " principle of comprehensive analysis of the territory " and " Russian Chernozem " latter being the most important where introduces the geographical concept of soil, as distinct from a simple geological strata, and thus founding a new geographic area of study: the Pedology.

According to an Environmental Working Group analysis of USDA and FDA pesticide residue tests performed from 2000 through 2008, 84 % of the 2, 216 tested potato samples contained detectable traces of at least one pesticide.

In the period from February 1888 and until 1891, a detailed analysis of photoeffect was performed by Aleksandr Stoletov with results published in 6 works ; four of them in Comptes Rendus, one review in Physikalische Revue ( translated from Russian ), and the last work in Journal de Physique.

The analysis of VNTR alleles continues, but is now usually performed by polymerase chain reaction ( PCR ) methods.

Static program analysis is the analysis of computer software that is performed without actually executing programs ( analysis performed on executing programs is known as dynamic analysis ).