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This page was last edited on 9 February 2024, at 17:27 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) is a planned orbiter mission tasked to study the origins of the solar wind and how it affects Earth. TRACERS was proposed by Craig A. Kletzing at the University of Iowa who served as Principal Investigator until his death in 2023. [ 4 ]
Anthropogenic tracers are chemicals or other substances that are derived from human activities and can be used to study environmental processes. They can be used to date groundwater , track the movement of wastewater, and study the composition of aerosols .
Trade reporting and compliance engine (TRACE), is a United States financial reporting regulation and related system for publicly reporting bond transactions.. Unlike stocks, which generally trade transparently on public exchanges, corporate bonds and structured products trade "over-the-counter", meaning they are private transactions between individual counterparties, and so the transactions ...
Positron emission tomography (PET) [1] is a functional imaging technique that uses radioactive substances known as radiotracers to visualize and measure changes in metabolic processes, and in other physiological activities including blood flow, regional chemical composition, and absorption.
A radioactive tracer, radiotracer, or radioactive label is a synthetic derivative of a natural compound in which one or more atoms have been replaced by a radionuclide (a radioactive atom). By virtue of its radioactive decay , it can be used to explore the mechanism of chemical reactions by tracing the path that the radioisotope follows from ...