منابع مشابه
The London Underground: time for a thorough clean-up?
T he London Underground was for decades the envy of every capital city in the world. Forty year old trains were powered by electricity from a polluting oil fired power station. Tobacco smoking was permitted at stations and in some carriages. Levels and composition of dust on The Tube had been measured, and found to contain a variety of toxic substances including quartz from brake blocks, but co...
متن کاملSuicide patterns on the London Underground railway system, 2000–2010
Aims and Method Suicidal acts on underground railway networks are an area of public health concern. Our aim was to review recent epidemiological patterns of suicidal acts on the London Underground to inform future preventive interventions. Data from 2000 to 2010 were obtained from the British Transport Police via a Freedom of Information request. Results The mean annual rate of suicidal acts fr...
متن کاملFare Evasion and Automatic Ticket Collection on the London Underground
At the end of 1989 a new ticket issuing and collection system, including automatic gates at 63 busy central stations, was brought into full operation on the London Underground. One of the system's principal objectives, a reduction in fare evasion, appears to have been achieved. The results of before-and-after surveys undertaken by the management of the Underground suggest that fare evasion has ...
متن کاملThe London Underground: dust and hazards to health.
AIMS To assess hazards associated with exposure to dust in the London Underground railway and to provide an informed opinion on the risks to workers and the travelling public of exposure to tunnel dust. METHODS Concentrations of dust, as mass (PM2.5) and particle number, were measured at different underground stations and in train cabs; its size and composition were analysed; likely maximal e...
متن کاملMetagenome of the Siberian Underground Water Reservoir
We report on the metagenome of a deep subsurface aquifer in the Tomsk region of Russia, sampled via an oil exploration borehole drilled to a depth of 2.8 km. Methanogenic archaea were present in the water along with members of various bacterial phyla, including Firmicutes, Chloroflexi, Bacteroidetes, Ignavibacteriae, and uncultured candidate divisions.
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ژورنال
عنوان ژورنال: Nature
سال: 1939
ISSN: 0028-0836,1476-4687
DOI: 10.1038/143342a0