Perfluorocarbons


Also found in: Dictionary, Thesaurus, Medical.

Perfluorocarbons

Potent greenhouse gases that accumulate in the atmosphere and remain there for thousands of years. Aluminum production and semiconductor manufacture are the largest known manmade sources of perfluorocarbons.
References in periodicals archive ?
Wickline, "Molecular Imaging With Targeted Perfluorocarbon Nanoparticles: Quantification of the Concentration Dependence of Contrast Enhancement for Binding to Sparse Cellular Epitopes," Ultrasound in Medicine & Biology, vol.
Perfluorocarbon has a protective role in the surfactant system and alveolar membrane [36].
"The current study is the largest ever to be done on the endocrine-disrupting effects of perfluorocarbons in human women," said Sarah Knox, of the West Virginia University School of Medicine in Morgantown and lead author of the study.
Even though the development of nanobubbles is long known, Oeffinger and Margaret pioneered the development of a surfactant stabilized nanosized USCA filled with perfluorocarbon gas.
So, future efforts may involve studying the effects of various doses of perflubron and finding more clinical applications for perfluorocarbons in general.
Each diaphragm, Precision-fit and designed for ITT, Saunders and Gemu valves, meets requirements FDA CFR Title 21 177.2600 (elastomers) and paragraph 177.1550 (perfluorocarbons) and USP Class VI.
Also perfluorocarbons are not stable enough due to their lipophilicity (Kabalnov et al., 1990; 1992) and, therefore, tend to interact with plasma membrane lipids and receptors.
EPA's final determination will subject emissions of carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFC), perfluorocarbons (PFC), and sulfur hexafluoride (SF6) to the regulatory and permit requirements of the Clean Air Act (CAA).
There are six different greenhouse gases that the Department of Ecology is concerned about: carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF6).
EPA Administrator Lisa Jackson said their determination on six GHGs--carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride--came after a "thorough" examination of scientific evidence and the over 380,000 public comments the agency received in response to its proposed findings released in April 2009.
Less prevalent -- but very powerful -- greenhouse gases are hydrofluorocarbons, perfluorocarbons and sulphur hexafluoride
"EPA's endangerment finding covers emissions of six key greenhouse gases--carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride--that have been the subject of scrutiny and intense analysis for decades by scientists in the United States and around the world.