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Latest Isotope analysis Stories

0ce84711a328e08c01d50629f4df27561
2010-09-29 06:10:00

Chemical tests on teeth from an ancient burial site containing the 3,550-year-old remains of a teenage boy wearing a unique necklace unearthed near Stonehenge indicate that the person buried there grew up around the Mediterranean Sea. The conclusions come from analysis of different forms of oxygen and strontium in the tooth enamel of the remains. A previous skeleton unearthed near Stonehenge was analyzed and was found to also be a migrant to the area. The "Boy with the Amber Necklace," as...

2c8a6db9518e70a11a7e86aa010dd368
2009-12-04 08:15:11

Isotope analysis provides accurate information The analysis of carbon and oxygen isotopes embedded in tree rings may shed new light on past climate events in the Mackenzie Delta region of northern Canada. Scientists have long looked at the width of tree rings to estimate temperature levels of past years. Larger rings indicate more tree growth in a season, which translates into warmer summer temperatures. But the analysis of carbon and oxygen isotopes in tree rings can also provide accurate...

57689fd926f07f3e23052d78feacbb7b1
2009-07-07 16:40:00

Freshwater fish are a major part of the diet of many peoples around the world, but it has been unclear when fish became a significant part of the year-round diet for early humans. Chemical analysis of the protein collagen, using ratios of the isotopes of nitrogen and sulphur in particular, can show whether such fish consumption was an occasional treat or part of the staple diet.The isotopic analysis of the diet of one of the earliest modern humans in Asia, the 40,000 year old skeleton from...

2009-03-24 09:15:09

Unraveling the origins of agriculture in different regions around the globe has been a challenge for archeologists. Now researchers writing in the Proceedings of the National Academy of Sciences report finding evidence of early human experiments with grain cultivation in East Asia. They gathered this information from an unlikely source"•dog and pig bones. The dog and pig bones, as well as bones of other animals analyzed in the study, come from an archaeological site in a region of...

2009-03-20 22:27:31

Crew members Christopher Columbus left behind after his second voyage to the Americas are telling tales of their past, U.S. researchers said. A team from the University of Wisconsin-Madison is examining the teeth from three sets of remains excavated nearly 20 years ago from the site of La Isabela -- the town Columbus founded in the Dominican Republic more than 500 years ago. Researchers said carbon isotope ratios provide evidence of diet at the time a child's adult teeth emerge, oxygen...

21a5d51789ed21b267ecae704093c0aa1
2009-03-20 09:15:52

The adage that dead men tell no tales has long been disproved by archaeology. Now, however, science is taking interrogation of the dead to new heights. In a study that promises fresh and perhaps personal insight into the earliest European visitors to the New World, a team or researchers from the University of Wisconsin-Madison is extracting the chemical details of life history from the teeth of crew members Christopher Columbus left on the island of Hispaniola after his second voyage to...

2009-03-12 18:17:00

SUNNYVALE, Calif., March 12 /PRNewswire/ -- A newly launched Isotopic Carbon Solution for Total Organic Carbon (TOC), jointly developed by Picarro, Inc. and O.I. Corporation, (d.b.a. OI Analytical) has been awarded the Editors' Choice Silver Prize as one of the three most outstanding new products at the 2009 PITTCON conference and technical exhibition (March 8-13, Chicago, IL). The PITTCON Editors' Choice Awards are intended to recognize the best examples of innovative and creative...

2009-03-09 09:33:00

SUNNYVALE, Calif., March 9 /PRNewswire/ -- Picarro, Inc. has partnered with O.I. Corporation, d.b.a. O.I. Analytical, (Nasdaq: OICO) to develop a turnkey analyzer to measure total organic carbon (TOC) as well as the carbon stable isotope ratio (delta-13C). The iTOC-CRDS works directly with solids, liquids, sludges and slurries, and will be formally launched at the Pittcon(R) 2009 technical conference and exhibition (March 8-13, Chicago, IL). The iTOC-CRDS is an integrated, small and...

d36acf60098ca826f1d7436d69665b741
2008-03-26 10:55:00

The beaches of French Guiana constitute a major reproduction site for leatherback turtles. This sea turtle, although a protected species, is threatened by human activity: it ingests plastics, gets accidentally caught in fishing nets, sees its egg-laying sites destroyed, and its adults hunted illegally for their meat and their eggs. Female turtles return to the same beach every two to three years to lay their eggs. What happens in the interval remains a mystery. It is sometimes possible to...

2dddb312432100990ffef4991e12cccd1
2008-02-26 00:35:00

Researchers at University of Utah reported Monday that a single strand of  hair can reveal a history of which areas within the United States a person has been living or spending time.The scientists compared variations in isotopes of hydrogen and oxygen found in strands of hair to those of tap water in various areas of the country. They found the isotopes corresponded, and were able to use this information to determine a person's location during recent weeks to years.Isotopes are forms of...


Word of the Day
bibliopole
  • A bookseller; now, especially, a dealer in rare and curious books.
This word comes from a Greek phrase meaning 'book seller.'
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