BACKGROUND Between September 17 and October 3, 2009, hundreds of workers employed in a manufacturing factory in Shenzhen, a city in south China developed a sudden onset of acute gastroenteritis. A retrospective cohort study is designed to identify the risk factors and control this outbreak. METHODS Information on demographic characteristics, working place, the history of contact with a person...

Waste ecologic storage is the main domestic waste treatment channel in EU. The paper describes the impact of a non-ecological warehouse existing in the municipality of Târgu-Jiu, upon the soil and the need for controlled storage of domestic waste and industrial waste. The necessary field for waste storage has to be mutually agreed upon with the local, sanitary, and environmental protection auth...

Environmental problems have attracted worldwide attention, and the recognition of their importance has risen through the newspapers and other media every day. In the construction industry, industrial waste resulting from civil engineering work has become a big problem, termed construction pollution. Construction sludge and muddy water resulting from construction or demolition are particularly d...

Studies about sediment erosion were mainly concentrated on the river channel sediment, the terrestrial sediment, and the underground sediment. The transport process of underground sediment is studied in the paper. The concept of the flush potential sediment is founded. The transport equation with stable saturated seepage is set up, and the relations between the flush potential sediment and wate...

constructionof underground dams is a practical solution to save groundwater in alluvium watersheds, particularly in arid and semi-arid regions where surface water scarcity is an environmental challenge. considering socio-economic and environmental benefits of underground dams, the accurate locating is the primary consideration for dam construction. the new technologies and methods are a step to...