RFNA is a rocket fuel (a storeable oxidiser): red fuming nitric acid. HNO3 + 13% N2O4 and 3% H2O. The colour of the resulting red fuming nitric acid is imparted by N2O4, which breaks down partially to form NO2, the actual source of the color. Rocket fuel is the propellant which is burned to produce thrust in rockets. ... The chemical compound nitric acid (HNO3), otherwise known as aqua fortis, is a colorless, corrosive liquid, a toxic acid which can cause severe burns. ...
Usually used with an inhibitor (various, sometimes secret, substances - hydrogen fluoride is one - it is then referred to as IRFNA) because HNO3 attacks most container materials. Hydrofluoric acid is a highly corrosive solution of the chemical compound hydrogen fluoride in water. ...
It can also be a monopropellant; with substances like ammonium nitrates dissolved in it, it can be used as the sole fuel in a rocket. It is not normally used this way however. A (usually liquid) rocket propellant that can be used by itself, without the need for a second component. ...
More at: http://www.astronautix.com/props/nitidjpx.htm
rFNA is a recently-validated technique for repeatedly sampling mammary cells from the whole breast to assess both 1) breast cancer risk and 2) response to chemoprevention in high-risk women.
Two of the great strengths of rFNA are 1) the ability to repeatedly sample field effects in the whole breast and 2) the willingness of high-risk women to undergo subsequent rFNA.
rFNA is an ideal technique to employ for this purpose because it was specifically designed to obtain multiple cellular samples from throughout the entire breast in high risk women.
rFNA is a recently-validated technique for repeatedly sampling mammary cells from the whole breast to assess both 1) breast cancer risk and 2) response to chemoprevention in high-risk women.
Breast rFNA is analogous to a cervical Pap smear in its ability to identify pre-cancerous changes in a representative sampling of cells from the entire breast.
The presence of cellular atypia in breast rFNA obtained in high-risk women is associated with a 4-fold increase in the likelihood of developing breast cancer.
Feeds |
Contact