نتایج جستجو برای: vaporisation
تعداد نتایج: 195 فیلتر نتایج به سال:
Laser induced isotopic fractionation Previous studies of laser ablation (LA) MC-ICP-MS analysis of Cu metal and sulphides showed reduced Cu/Cu ratios compared to solution nebulisation MC-ICP-MS of the same samples [1]. The fractionation of about 30ε (parts per 10,000) was reproduced repeatedly and observed, to a smaller degree, for Ag and Sb also. This deviation, which was attributed largely to...
Risk of human papillomavirus (HPV) transmission during laser vaporisation of genital warts or loop electrode excision procedure is controversial. An oral rinse, a nasal swabs, history of HPV related diseases and data on HPV exposure were collected from 287 employees at departments of dermato-venerology and gynaecology in Denmark. A mucosal HPV type was found among 5.8% of employees with experie...
Cannabis has been employed medicinally throughout history, but its recent legal prohibition, biochemical complexity and variability, quality control issues, previous dearth of appropriately powered randomised controlled trials, and lack of pertinent education have conspired to leave clinicians in the dark as to how to advise patients pursuing such treatment. With the advent of pharmaceutical ca...
As pulmonary drug deposition is a function of aerosol particle size distribution, it critical that the dynamics formation and maturation in pMDI sprays interim between generation inhalation are fully understood. This paper presents an approach to measure evaporative condensational fluxes volatile components water from solution droplets following using novel technique referred as Single Particle...
Analytical precision of the isotope ratios measured by quadrupole-based ICP-MS is drastically controlled by the lowfrequency noises which originate from nebulisation and vaporisation processes, and from sample introduction systems. The undesirable influence of these latter can be however reduced by choosing efficiently the operating parameters. In the present study, the choice of the stabilisat...
Analytical models were developed that simulate stable isotope ratios of volatile organic compounds (VOCs) near a point source contamination in the unsaturated zone. The models describe diffusive transport of VOCs, biodegradation and source ageing. The mass transport is governed by Fick's law for diffusion. The equation for reactive transport of VOCs in the soil gas phase was solved for differen...
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