Michael D . Glascock, of the University of Missouri Research Reactor Center at the University of Missouri ( which performs neutron activation analysis ), has divided Mesoamerica into nine sub-regions with one or more obsidian sources in each.
42.
In the 1980s two primary groups of Eastern Terra Sigillata in the Eastern Mediterranean basin were distinguished as ETS-I and ETS-II based on their chemical fingerprints as shown by analysis by instrumental neutron activation analysis ( INAA ).
43.
After this, he and his wife Eva moved to Bell Telephone Laboratories, Allentown, Pennsylvania, where he made contributions to electrochemistry and anodic oxidation of silicon, was expert in neutron activation analysis, and published many papers, till his retirement in 1982.
44.
SLOWPOKE reactors are used mainly for neutron activation analysis ( NAA ), in research and as a commercial service, but also for teaching, training, irradiation studies, neutron radiography ( only at the Royal Military College of Canada ), and the production of radioactive tracers.
45.
Zdesenko started researches in the Laboratory of Nuclear Physics of the T . G . Shevchenko Kyiv State University ( 1970-1971 ) and then in the Institute of Geochemistry and Physics of Minerals ( 1971-1980 ) where he dealt with neutron activation analysis of minerals and radiocarbon dating.
46.
The departmental facilities include, in addition to the UFTR, a uranium metal-fueled sub-critical facility, a high-output fusion neutron generator irradiation laboratory, 1 and 10 curie Plutonium-Beryllium ( Pu-Be ) neutron sources, a radiochemistry laboratory with hot-cell and decontamination capabilities, a neutron activation analysis laboratory, and multi-user nuclear instrumentation laboratory work stations.
47.
Using neutron activation analysis, Asaro and his co-workers showed that the stone from Aswan was only used to repair the upper half of the northern statue, which had been knocked over in an earthquake about 27 B . C . and reconstructed by Roman emperor Septimius Severus about 197 A . D.
48.
Earlier known Mogollon sites were open to the elements; Tularosa Cave was buried under a thick layer of soil which preserved the organic remains of the Mogollon culture-maize cobs, shoes, baskets, netting and strings etc . These organic specimens preserved by Martin and Rinaldo enabled later researchers to perform DNA analysis and neutron activation analysis of the site excavated many decades ago.
49.
Between 1962 and 1964, the shielding of the R-3 reactor was extended to allow operation at higher power levels and this improved reactor began operation in 1963, operating at a steady-state power level of 250 kW . This reactor became a major part of the nuclear engineering instructional program and also began to provide some services in radioisotope production and neutron activation analysis.
50.
In an effort to address questions concerning the geographic origin of Olmec-style artifacts with implications concerning the geographic origins of Olmec culture in March 2005 a team of archaeologists used INAA ( instrumental neutron activation analysis ) to compare over 1000 ancient Mesoamerican Olmec-style ceramic artifacts with 275 samples of clay so as to " fingerprint " the origin of that pottery.
