Empirical evidence evaluating the e¢ciency of economic instruments is still rare, despite signi...cant theoretical advances over the last decades. The purpose of the paper is to evaluate one form of environmental taxation, the French tax on air pollution from 1990-99. While starting out in 1985 as a tax levied only on sulphur emissions, the tax base was subsequently extended to encompass also e...

Halitosis refers to the condition of offensive mouth odour. More than 90% of cases of halitosis originate from the oral cavity. The implicated bacteria (Fusobacterium nucleatum, Prevotella intermedia, and Tannerella forsythensis) are located in stagnant areas in the oral cavity, such as the dorsal surface of tongue, periodontal pockets, and interproximal areas. These bacteria proteolyse the ami...

............................................................................................................. I ACKNOWLEDGEMENTS .................................................................................... II LIST OF PAPERS................................................................................................. III BACKGROUND.........................................................

Abstract External costs that occur in the use of energy resources are one most important criteria determining and environmental policies. For this purpose, it is to know external any sources. The purpose study calculate due air pollutants Turkey for years 2000 2019. namely ammonia, nonmethane volatile organic compounds, nitrogen oxides, particulate matter, sulphur dioxide have been taken into c...

Neem oil is obtained from the seeds of the tree Azadirachta indica. Its chemical composition is very complex, being rich in terpenoids and limonoids, as well as volatile sulphur modified compounds. This work focused on the evaluation of a component of the whole Neem oil obtained by methanolic extraction and defined as MEX. Cytotoxicity was assessed on two different cell populations: a stabilize...

NTRODUCTION Halitosis is defined as breath that is offensive to others, caused by a variety of reasons including but not limited to periodontal disease, bacterial coating of tongue, systemic disorders and different types of food. It is one of the most frequent claims from patients to the dentist. Halitosis is not a disease but rather a symptom of underlying oral, systemic or psychological condi...

A method for analysis of heavy sulphur compounds in wines, based on gas chromatography (GC) with flame photometric detection, is reported. Wine samples preparation includes a dichloromethane liquid–liquid extraction followed by concentration under a nitrogen atmosphere. The extracted fraction was also analysed by GC–mass spectrometry. The method enables high recovery of sulphur compounds in win...