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The Buchan trap was devised in the 19th century to stop the flow of sewer gases due to the miasma theory of disease. [1] For example, it was believed that the disease cholera was an airborne infection, not waterborne. The Buchan trap is normally found in the bottom of manholes or drop-shafts.
Territorial waters and exclusive economic zone of the Philippines. The Philippines is an archipelagic state whose over 7,000 islands of roughly 300,000 square kilometres (120,000 sq mi) [1] are surrounded by 36,289 kilometres (22,549 mi) of coastline [2]: 15 supporting a large coastal population.
In domestic applications, traps are typically U, S, Q, or J-shaped pipe located below or within a plumbing fixture.An S-shaped trap is also known as an S-bend.It was invented by Alexander Cumming in 1775 but became known as the U-bend following the introduction of the U-shaped trap by Thomas Crapper in 1880.
There were 2.35 million metric tons of aquaculture products created in the Philippines, 54.15% of all fisheries products in the Philippines, with a total value of around PhP 124.00 billion. The biggest commodity by volume was seaweed, which with 1,544,959.98 metric tons made up 65.8% of aquaculture production.
In 2013, Typhoon Haiyan, one of the strongest recorded tropical cyclones in the world, left more than 7,300 people dead or missing, flattened entire villages, swept ships inland and displaced more than 5 million in the central Philippines.
A traditional payao is a bamboo raft anchored to the seafloor with rocks. They are usually placed in very deep water, but coastal and shallow-water versions also exist. The rafts are around 4 m (13 ft) long, 1.5 m (4.9 ft) wide, and tapering at one end.
Grease traps have been in use since the Victorian era; in the late 1800s, Nathaniel Whiting was granted the first patent. The quantity of fats, oils, greases, and solids (FOGS) that enter sewers is decreased by the traps. They consist of boxes within the drain run that flows between the sinks in a kitchen and the sewer system.
A gully is a landform created by running water, mass movement, or commonly a combination of both eroding sharply into soil or other relatively erodible material, typically on a hillside or in river floodplains or terraces.