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2. Bathtub - Wikipedia

   en.wikipedia.org/wiki/Bathtub

   A bathtub, also known simply as a bath or tub, is a container for holding water in which a person or another animal may bathe. Most modern bathtubs are made of thermoformed acrylic, porcelain-enameled steel or cast iron, or fiberglass-reinforced polyester. A bathtub is placed in a bathroom, either as a stand-alone fixture or in conjunction with ...

3. List of tallest structures in the United States by height

   en.wikipedia.org/wiki/List_of_tallest_structures...

   Petronius Platform: Gulf of Mexico: Oil Platform approx. 75 meters visible above water surface 609.6 m: KCAU TV Tower: Sioux City, Iowa: Guyed Mast 609.6 m KATV Tower: Redfield, Arkansas: Guyed Mast collapsed on January 11, 2008 609.6 m WECT TV6 Tower: Colly Township, North Carolina: Guyed Mast demolished in 2012 609.6 m KOLR Tower: Fordland ...

4. List of tallest freestanding structures - Wikipedia

   en.wikipedia.org/wiki/List_of_tallest...

   This is a list of tallest freestanding structures in the world past and present. To be freestanding a structure must not be supported by guy wires , the sea or other types of auxiliary support. It therefore does not include guyed masts , partially guyed towers and drilling platforms but does include towers , skyscrapers ( pinnacle height) and ...

5. Oil platform - Wikipedia

   en.wikipedia.org/wiki/Oil_platform

   The Lun-A (Lunskoye-A) platform, located off the north eastern coast of Sakhalin Island and is a concrete gravity base substructure (CGBS).. An oil platform (also called an oil rig, offshore platform, oil production platform, etc.) is a large structure with facilities to extract and process petroleum and natural gas that lie in rock formations beneath the seabed.

6. Carbon nanotube - Wikipedia

   en.wikipedia.org/wiki/Carbon_nanotube

   Lalwani et al. have reported a novel radical-initiated thermal crosslinking method to fabricate macroscopic, free-standing, porous, all-carbon scaffolds using single- and multi-walled carbon nanotubes as building blocks. [43] These scaffolds possess macro-, micro-, and nano-structured pores, and the porosity can be tailored for specific ...

7. Bathtub curve - Wikipedia

   en.wikipedia.org/wiki/Bathtub_curve

   The bathtub curve is a particular shape of a failure rate graph. This graph is used in reliability engineering and deterioration modeling. The 'bathtub' refers to the shape of a line that curves up at both ends, similar in shape to a bathtub. The bathtub curve has 3 regions: The first region has a decreasing failure rate due to early failures.