"Because there is plenty of nicotine available in the tobacco of commercial low-yield cigarettes, it is easy for the smoker to alter puff rate and/or smoking intensity," says the study, in the November issue of Cancer Epidemiology, Biomarkers and Prevention.
With increasing fuel gas puff rate, the mid-plane separatrix density increases and the Ar impurity concentration at the outer mid-plane decreases to 0.5%.
Low temperature conditions at the plasma facing components, achieved by a large clearance between the separatrix and the antenna (>6 cm) and by elevated gas puff rates (>5×1021s−1) help to lower W sputtering yield during ICRF.
D2 gas puffing is used and increasing of the puffing rate means increase of plasma density.
A comparison between the peak heat flux between long leg and conventional divertor shows that an attached detached regime transition of out divertor occurs at lower gas puffing gas puffing rate for long leg divertor.
The pulses considered cover a range in average core electron density, with approximately constant tritium puffing rates.
Reducing circumference reduces tobacco mass burn rate, puff count and static burn time, and increases draw resistance and rod length burned during puff and smoulder periods.
20E concentration is known to affect at least three aspects of the 20E-response: the size of both early and late puffs [ 2], the rate of early puff regression [ 2], and the transcription of some early gene isoforms [ 38].
In the proposed puffing model, the rate of mass change of a droplet during puffing was expressed by the evaporation rate of dispersed water and the mass change rate due to fine droplets spouted from the droplet surface.
Briefly, 70-cm puffs at the rate of 2/min were generated from 2R1 research cigarettes (Tobacco Health Research Institute, Lexington, KY, USA) by a smoking machine (Type 1300; AMESA Electronics, Geneva, Switzerland).
Post-30 months of the baseline assessment, 436 never-smokers reported trying cigarette smoking, including a few puffs (33% incidence rate); 138 reported smoking in the past 30 days (10.5% incidence rate), 66 had smoked more than 100 cigarettes and were classified as established smokers (incidence rate 5%), and 58 reported daily smoking (incidence rate 4.4%).
