Sentence examples for isotope exposure from inspiring English sources

In such a setting, simple single isotope exposure ages over-estimate the latest period of surface exposure; hence, alternate approaches are required to constrain the multi-stage exposure/burial histories of such samples.

Cosmogenic isotope exposure ages of desert pavement and welded, calcic gypsic salic Reg soils that developed on relatively flat alluvial surfaces ∼2 Ma ago in the Negev Desert indicate long geomorphic stability under extremely dry conditions.

However, such data can only be demonstrated through the use of stable isotope exposures and ultrasensitive analytical methods.

6 7 8 Echocardiography offers advantages because it is readily available and does not require intravenous injection, radioactive isotopes, or exposure to radiation.

Cosmogenic isotope (36Cl) surface exposure dating of four of the erratic boulders at Norber in the Yorkshire Dales National Park, northwest England, yielded mean ages of ∼22.2 ± 2.0 ka BP and ∼18.0 ± 1.6 ka BP for their emplacement.

Unquestionably, the GLP-1 receptor tracer labelled with 99mTc is characterized by the general availability of the isotope, lower radiation exposure to patients and staff, and potential usefulness of this compound for intraoperative localization of insulinoma foci using a gamma probe [ 11].

The combination of stable and radionuclide isotopes documents complex exposure histories with substantial periods of burial combined with minimal erosion.

The NHANES III measured serum cotinine, a biomarker of ETS exposure, using isotope dilution liquid chromatography with tandem mass spectrometry (Gunter et al. 1996), with a limit of detection of 0.05 ng/mL (NCHS 2006).

External exposure of isotope labelled FA (CD2) can be distinguished from internal CH2O-FA adducts by mass spectrometry (Lu et al. 2010, 2011, 2012; Moeller et al. 2011; Swenberg et al. 2011).

While PET has much higher detection sensitivity (picomolar range) than MRI, and much better tissue penetration than ultrasound or OCT, the disadvantages of PET are its limited spatial resolution, logistics of isotope provision, substantial radiation exposure and expense.

Activities below LoD are displayed as 0 in the graph Fig. 4 Model for estimating radioactive exposure from isotopes in STPs.