Sentences with phrase «radioactive samples»

«Because of the radioactive samples that will be analyzed, this design is far from the usual NMR lab,» said Cho.

The team will investigate and broaden our understanding of specific groups of radioactive elements and train students to properly handle and examine radioactive samples.

At the X-ray powder diffraction beamline at the National Synchrotron Light Source II, scientists devised a way to avoid directly handling radioactive samples.

Earnest Lawrence, the head of the Berkeley laboratory, made sure that that research programme did not dry up by sending Segre more radioactive samples — by post.

One thing we did was expand on our first find and look at more radioactive samples.

Not exact matches

Elevated levels of radium have been found in groundwater samples from shallow monitoring wells on the Bethpage High School campus and the state DEC plans to take more samples and scan field and soil areas there for more radioactive elements.

For a year, in addition to testing air samples for radioactive isotopes, Bartke collected soil organisms, insects and other invertebrates, and a few snakes and lizards, making do with the little equipment and few supplies that he had.

DEC wastewater samples had levels of radioactive elements thousands of times higher than drinking water limits, ProPublica reported.

So his group acquired a sample of radioactive manganese - 54, which decays in just under a year, neither too slow nor too fast to study.

Researchers examined the covers with carbon dating — which looks at a radioactive form of carbon in a sample to determine its age — and other tools, finding the artifacts are authentic.

Now, using precise chemical measurements of seafloor rock and moon samples, scientists have shown that nearby supernovas rained down radioactive iron and potentially influenced life on Earth.

Each nuclear sample has a host of distinctive attributes, including the exact mix of impurities, the ratio of different radioactive isotopes, even embedded carbon compounds that indicate the sample's age.

In 1899 Ernest Rutherford noticed that half of the atoms in a sample of radioactive radon gas disappeared with each passing minute.

Thanks to this sample, the research team was able to calculate the amount of curium present in the early solar system and to compare it to the amount of other heavy radioactive elements such as iodine - 129 and plutonium - 244.

Taking samples of such speleothems from six caves, the researchers then reconstructed the last roughly 500,000 years of climate via the decay of radioactive particles in the stone.

Working on soil samples from a highly alkaline industrial site in the Peak District, which is not radioactive but does suffer from severe contamination with highly alkaline lime kiln wastes, they discovered specialist «extremophile» bacteria that thrive under the alkaline conditions expected in cement - based radioactive waste.

The radioactive carbon 14 is isolated from the other atoms in a sample, making it possible to derive more accurate chronologies from much smaller archaeological or anthropological specimens

The samples were labeled with radioactive isotopes, which meant that each individual base (the A, T, C, or G) produced a visual signature on film.

With four different uranium samples included — all labeled with fallout shelter - style «radioactive» stickers — the first sight of this 1951 kit still brings pop - eyed expressions.

From samples of seawater, Jota Kanda of Tokyo University of Marine Science and Technology estimated last year that about 0.3 terabecquerels (TBq) of radioactive material are leaking into the sea each month.

The most common probes, which use fluorescent markers or radioactive labels to pinpoint the virus's location in a tissue sample, sometimes have difficulty distinguishing the target — HIV RNA and DNA — from surrounding cellular components.

They sent soil samples for DNA testing, looking for matches with particular genes known to be found in microbes and fungi; they tried to stimulate microbial growth on a wide variety of substances and then count the cells produced; and they used highly sensitive radiorespiration activity assays, which involve feeding the soil microorganisms a food source which has been labelled with radioactive carbon, which can then be used to detect if the microorganisms are active.

George decided to take a closer look at the VTA and worked closely with Paul Sawchenko, professor at the Salk Institute who was part of the group that originally discovered CRF, to use radioactive RNA markers to detect CRF in brain samples from rodents.

The nutrients were laced with radioactive carbon, so if the solution was digested, a radiation monitor above the sample would detect the resulting gas.

The age of the fossils was corroborated by radiometric dating (using radioactive isotopes), the global paleomagnetic sequence (signatures of reversals of Earth's magnetic field found in the samples), and fossil correlations (age of other fossils).

In late 2008, samples of Chico's municipal drinking water were found to contain radium, a radioactive derivative of uranium and a common attribute of drilling waste.

Habs, Jentschel, and colleagues used one of its beams to bombard samples of radioactive chlorine and gadolinium to produce gamma rays.

British Columbia Lesbian Singles.Looking for a glad to radioactive dating of rocks samples.

Some might think it's science — working out the ratios of various radioactive isotopes in a sample to determine the age of something.

G. Brent Dalrymple's classic debunking of the young - earth «scientific» creationism's dating methods with a short explanation of how geologists know the age Radiometric dating measures the decay of radioactive atoms to determine the age of a rock sample.

his document Radiometric dating measures the decay of radioactive atoms to determine the age of a rock sample.

Radiometric dating measures the decay of radioactive atoms to determine the age of a rock sample.

It took about a minute using Google for me to find a paper published in Science four years before the Chernobyl meltdown describing precisely the same level of «the naturally occurring radioactive nuclide polonium - 210» in the same species of shrimp in samples from the Atlantic Ocean.

The values were measured from single core samples of aging radioactive waste in a tank.

SImple experiment: put a sample of a radioactive element (which has a measured temperature) inside of a Dewar flask and measure if the temperature of the radioactive element rises as a result of radiative reflection from the inner walls of the flask.

The scientists brought their 1.55 metre cores to the surface in 1993, but it has taken another two decades for laboratory techniques to detect and interpret the significance of radioactive particle samples in the rock that could only have come from outer space — which is why scientists think the bedrock must have been exposed, possibly more than once.

Collected water well samples, performed ergonomic assessments, tested and isolated radioactive contaminated parts and equipment, conducted noise surveys and calibrated H2S monitors.