Users of e-cigarettes are unwitting volunteers participating in a worldwide epidemiological study. Because of the obvious benefits of e-cigarettes compared with traditional cigarette smoking, these electronic devices have been introduced all around the world to support tobacco smoking cessation. Same potential harm reduction could be considered by cannabis vaping for marijuana smokers. However,...

The vapour pressure is the most important property of an anthropogenic organic compound in determining its partitioning between the atmosphere and the other environmental media. The enthalpy of vaporisation quantifies the temperature dependence of the vapour pressure and its value around 298 K is needed for environmental modelling. The enthalpy of vaporisation can be determined by different exp...

A thermogravimetric method was used to measure the vapour pressures of a series of hydroxybenzophenone UV stabilisers. Enthalpies of vaporisation were determined from the slope of a plot of the logarithm of the vapour pressure against reciprocal absolute temperature. Enthalpies of sublimation were measured either directly by the same method or by summing the enthalpy of vaporisation with the en...

VAPORISATION. F. Poitrasson1,2 , A.N. Halliday2, D.C. Lee2,3, S. Levasseur2 and N. Teutsch2,4, 1Laboratoire de Géochimie, CNRS, 38, rue des 36 Ponts, 31400 Toulouse, France ([email protected]) 2Department of Earth Sciences, ETH-Zentrum, Sonneggstrasse 5, 8092 Zürich, Switzerland. 3Institute of Earth sciences, Academia Sinica, Academia Road section 2, Nankang, Tapei 115, Republic of Chin...

A boundary element formulation for the solution of multiple moving boundary problems is presented and tested herein. A heat transfer problem involving heating of solid, melting of solid and vaporisation of liquid is considered. Numerical results show that the boundary element method is more suitable and more accurate than both finite difference and finite element methods for this kind of problems

A 3 year retrospective review (1995 to 1997) of 127 patients with cervical dysplasia who underwent Laser Vaporisation of the cervix and LEEP at the Gynaecological Cancer Centre, KK Women's & Children's Hospital, Singapore, was undertaken. Amongst the patients in the Laser Vaporisation group, the mean age was 37.7 years (SD 8.8), the mean operating time was 14.8 minutes (SD 8.5), 63.6% were give...