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Dissociation constant. In chemistry, biochemistry, and pharmacology, a dissociation constant (KD) is a specific type of equilibrium constant that measures the propensity of a larger object to separate (dissociate) reversibly into smaller components, as when a complex falls apart into its component molecules, or when a salt splits up into its ...
Ellingsen has worked for fashionble clothing seller NA-KD, modelling products and creating her own influencer collections. [16] [17] In June 2020, it was announced that Ellingsen would feature in the Norwegian TV Series The Bloggers. [18] She stars in the television series Generation Z, which came out 2018. In 2020, Ellingsen released a book ...
Sodium–potassium alloy under mineral oil. Sodium–potassium alloy, colloquially called NaK (commonly pronounced / næk /), [2] is an alloy of the alkali metals sodium (Na, atomic number 11) and potassium (K, atomic number 19) that is normally liquid at room temperature. [3] Various commercial grades are available.
The dalton or unified atomic mass unit (symbols: Da or u) is a unit of mass defined as 1 12 of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state and at rest. [1][2] It is a non-SI unit accepted for use with SI. The atomic mass constant, denoted mu, is defined identically, giving mu = 1 12 ...
The sodium-calcium exchanger (often denoted Na + /Ca 2+ exchanger, exchange protein, or NCX) is an antiporter membrane protein that removes calcium from cells. It uses the energy that is stored in the electrochemical gradient of sodium (Na +) by allowing Na + to flow down its gradient across the plasma membrane in exchange for the countertransport of calcium ions (Ca 2+).
Wikimedia Commons has media related to k-d trees. In computer science, a k-d tree (short for k-dimensional tree) is a space-partitioning data structure for organizing points in a k -dimensional space. K-dimensional is that which concerns exactly k orthogonal axes or a space of any number of dimensions. [1] k -d trees are a useful data structure ...
Isotopes of sodium. Na is the only stable (and the only primordial) isotope. It is considered a monoisotopic element and it has a standard atomic weight of 22.989 769 28(2). Sodium has two radioactive cosmogenic isotopes (22. Na, with a half-life of 14.9560 (15) h). With the exception of those two isotopes, all other isotopes have half-lives ...
Sodium/iodide cotransporter. The sodium/iodide cotransporter, also known as the sodium/iodide symporter (NIS), [5] is a protein that in humans is encoded by the SLC5A5 gene. [6][7][8] It is a transmembrane glycoprotein with a molecular weight of 87 k Da and 13 transmembrane domains, which transports two sodium cations (Na +) for each iodide ...
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