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Hydrogen isotope biogeochemistry is the scientific study of biological, geological, and chemical processes in the environment using the distribution and relative abundance of hydrogen isotopes. There are two stable isotopes of hydrogen, protium 1 H and deuterium 2 H, which vary in relative abundance on the order of hundreds of permil.
Gastric balloon. A diagram of a gastric balloon. A gastric balloon, also known as an intragastric balloon ( IGB) or a stomach balloon, is an inflatable medical device that is temporarily placed into the stomach to help reduce weight. It is designed to help provide weight loss when diet and exercise have failed and surgery is not wanted by or ...
Rotary vacuum drum filter (RVDF), patented in 1872, [2] is one of the oldest filters used in the industrial liquid-solids separation. It offers a wide range of industrial processing flow sheets and provides a flexible application of dewatering, washing and/or clarification. A rotary vacuum filter consists of a large rotating drum covered by a ...
Mafatih al-Ghayb ( Arabic: مفاتيح الغيب, lit. 'Keys to the Unknown'), usually known as al-Tafsir al-Kabir ( Arabic: التفسير الكبير, lit. 'The Large Commentary'), is a classical Islamic tafsir book, written by the twelfth-century Islamic theologian and philosopher Fakhruddin Razi (d.1210). [1] The book is an exegesis and ...
Graeco-Latin squares. A Graeco-Latin square or Euler square or pair of orthogonal Latin squares of order n over two sets S and T (which may be the same), each consisting of n symbols, is an n × n arrangement of cells, each cell containing an ordered pair (s, t), where s is in S and t is in T, such that every row and every column contains each element of S and each element of T exactly once ...
Intraperitoneal injection or IP injection is the injection of a substance into the peritoneum (body cavity). It is more often applied to non-human animals than to humans. In general, it is preferred when large amounts of blood replacement fluids are needed or when low blood pressure or other problems prevent the use of a suitable blood vessel for intravenous injection.
Biltmore stick. The Biltmore stick is a tool used by foresters to estimate tree trunk diameter at breast height. The tool very often includes a hypsometer scale to estimate height as well. It looks much like an everyday yardstick.
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