Please Scroll Down to See Forums Below
Lumberg
- Thread starter wootoom
- Start date
hamstershaver
New member
lol klu said something about that yesterday too
B
BrothaBill
Guest
Wootoom said:
Im a cancer, but I dont buy into that astrology shit
Lumberg
New member
Fuck all of you DIAF
Aerodynamic diameter measurement of cellulose acetate fibers from cigarette filters: what is the potential for human exposure?
Collazo H, Crow WA, Gardner L, Phillips BL, Dyer WM Jr, Marple VA, Utell MJ.
Eastman Chemical Co., Kingsport, Tennessee 37660, USA. [email protected]
Aerodynamic diameter is a major determinant of particle and fiber deposition and toxicity in the respiratory tract. To characterize cellulose acetate fibers released from the filter end of cigarettes puffed under conditions approximating smoking, we designed multistage impactors to determine the aerodynamic diameters of large fibers with circumscribed diameters between 20 and 35 microm and aspect ratios ranging from subfiber ratios up to 40. This range of diameters encompasses all of the cellulose acetate fiber sizes that are commercially manufactured. When commercially available cigarettes with filters made from acetate fibers in this circumscribed diameter range were puffed directly into the impactor, on average 10 fibers/cigarette were released and their aerodynamic diameters were determined. In our studies, we found that the aerodynamic diameters of the cellulose acetate fibers were always greater than 23 microm. Using standard lung deposition models, we concluded that the fibers are nonrespirable with a very low probability of penetration to the distal lung. Our findings, which demonstrate release of only a small number of these large fibers with an extremely low likelihood of reaching the distal lung, indicate that these fibers are not a risk for human lung disease.
Aerodynamic diameter measurement of cellulose acetate fibers from cigarette filters: what is the potential for human exposure?
Collazo H, Crow WA, Gardner L, Phillips BL, Dyer WM Jr, Marple VA, Utell MJ.
Eastman Chemical Co., Kingsport, Tennessee 37660, USA. [email protected]
Aerodynamic diameter is a major determinant of particle and fiber deposition and toxicity in the respiratory tract. To characterize cellulose acetate fibers released from the filter end of cigarettes puffed under conditions approximating smoking, we designed multistage impactors to determine the aerodynamic diameters of large fibers with circumscribed diameters between 20 and 35 microm and aspect ratios ranging from subfiber ratios up to 40. This range of diameters encompasses all of the cellulose acetate fiber sizes that are commercially manufactured. When commercially available cigarettes with filters made from acetate fibers in this circumscribed diameter range were puffed directly into the impactor, on average 10 fibers/cigarette were released and their aerodynamic diameters were determined. In our studies, we found that the aerodynamic diameters of the cellulose acetate fibers were always greater than 23 microm. Using standard lung deposition models, we concluded that the fibers are nonrespirable with a very low probability of penetration to the distal lung. Our findings, which demonstrate release of only a small number of these large fibers with an extremely low likelihood of reaching the distal lung, indicate that these fibers are not a risk for human lung disease.
needtogetaas
New member
nice bicep bbBrothaBill said:
needtogetaas
New member
me toWootoom said:
you are all exceedingly odd.
but in a totally good way.
I think.
but in a totally good way.
I think.
Lestat_ said:
I was being held hostage by a clan of Amish hypnotists that were convincing me that I was a water jug for six months.
But to answer your question, I am doing fantastically. You?
Okay, Ive been gone awhile...i remember the "good broly" thing for a while; whassup with "good bro's"?
*sigh*
this is so touching...
this is so touching...
