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Definition. Skeletal structure of PFOS, an effective, persistent and bioaccumulative fluorosurfactant. Space filling model of PFOS. Per- and polyfluoroalkyl substances are defined as a group of synthetic organofluorine chemical compounds that have multiple fluorine atoms attached to an alkyl chain.
Zhencheng Lou. The Fujian tulou ( simplified Chinese: 福建土楼; traditional Chinese: 福建土樓; pinyin: Fújiàn tǔlóu; lit. 'Fujian earthen buildings') are Chinese rural dwellings [1] unique to the Hakka in the mountainous areas in southeastern Fujian, China. They were mostly built between the 12th and the 20th centuries.
Arkane Studios SASU is a French video game developer based in Lyon. It was founded in 1999, and released its first game, Arx Fatalis, in 2002. Besides the Lyon studio, Arkane Lyon, Arkane Studios operated Arkane Studios LLC [2] ( trading as Arkane Austin) in Austin, Texas, from July 2006 until its closure in May 2024. [3] .
Termitidae. Termites are a group of detritophagous eusocial insects which consume a wide variety of decaying plant material, generally in the form of wood, leaf litter, and soil humus. They are distinguished by their moniliform antennae and the soft-bodied and often unpigmented worker caste for which they have been commonly termed " white ants ...
Common ash ( Fraxinus excelsior ), a deciduous broad-leaved ( angiosperm) tree. European larch ( Larix decidua ), a coniferous tree which is also deciduous. In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, including only ...
The Great Wall of China ( traditional Chinese: 萬里長城; simplified Chinese: 万里长城; pinyin: Wànlǐ Chángchéng, literally "ten thousand li long wall") is a series of fortifications that were built across the historical northern borders of ancient Chinese states and Imperial China as protection against various nomadic groups from the Eurasian Steppe.
The Boeing B-29 Superfortress is an American four-engined propeller-driven heavy bomber, designed by Boeing and flown primarily by the United States during World War II and the Korean War.
