Pyroxene: Pyroxene, an important group of rock-forming minerals, very similar in chemical composition and general characters to the amphiboles. Although crystallizing in three different systems, they all possess distinct prismatic cleavages, the angles between which are about 87° (the cleavage ... [100%] 2022-09-02
Pyroxene: The pyroxenes (commonly abbreviated to Px) are a group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks. Pyroxenes have the general formula XY(Si,Al)2O6, where X represents calcium (Ca), sodium (Na), iron (Fe ... (Chemistry) [100%] 2023-02-01 [Inosilicates] [Pyroxene group]...
Pyroxene: The pyroxenes are a group of important rock-forming silicate minerals found in many igneous and metamorphic rocks. They share a common structure comprised of single chains of silica tetrahedra and they crystalize in the monoclinic and orthorhombic system. Pyroxenes ... [100%] 2023-02-04
Pyroxene: The pyroxenes (commonly abbreviated Px) are a group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks. Pyroxenes have the general formula XY(Si,Al)2O6, where X represents calcium (Ca), sodium (Na), iron (Fe(II ... (Group of inosilicate minerals with single chains of silica tetrahedra) [100%] 2024-09-26 [Inosilicates] [Pyroxene group]...
Pyroxenite: Pyroxenite, a rock consisting essentially of minerals of the pyroxene group, such as augite and diallage, hypersthene, bronzite or enstatite. Names have been given to members of this group according to their component minerals, e. pyroxenite (augite), diallagite (diallage), hypersthenite ... [75%] 2022-09-02
Piroxeno: Los piroxenos son un importante grupo de silicatos que forman parte de muchas rocas ígneas y metamórficas. Su nombre proviene de las palabras "piro" y "xeno" del griego antiguo que significan "fuego" y "extraño". Este nombre se lo dio René Just ... [75%] 2024-10-31
Proxeny: Proxeny or proxenia (Greek: προξενία) in ancient Greece was an arrangement whereby a citizen (chosen by the city) hosted foreign ambassadors at his own expense, in return for honorary titles from the state. The citizen was called proxenos (πρόξενος; plural: proxenoi or ... [71%] 2022-12-23 [Proxenoi] [Ambassadors in Greek Antiquity]...
Propene: Propene, also known as propylene, is an unsaturated organic compound with the chemical formula \ce{ CH3CH=CH2 }[/math]. It has one double bond, and is the second simplest member of the alkene class of hydrocarbons. (Chemistry) [71%] 2023-09-01 [Alkenes] [Monomers]...
Prolene: Articles Most recent articles on Prolene Most cited articles on Prolene Review articles on Prolene Articles on Prolene in N Eng J Med, Lancet, BMJ Media Powerpoint slides on Prolene Images of Prolene Photos of Prolene Podcasts & MP3s on Prolene ... [71%] 2023-03-18 [Surgery]
Pyrone: Les pyrones ou pyranones sont une classe de composés cycliques, hétérocycle à six atomes contenant de l'oxygène (pyrane) et possédant un groupe fonctionnel cétone. Il existe deux isomères de la pyrone : la 2-pyrone ou pyran-2-one, où le groupe ... [66%] 2024-01-12
Pyrene (mythology): In Greek mythology, Pyrene (Ancient Greek: Πυρήνη) may refer to. (Mythology) [66%] 2023-11-21 [Nymphs]
Pyrene: Pyrene, C16H10, a hydrocarbon found together with chrysene in the last portion of the coal tar distillate, and also in "Stupp" fat. The crude solid product from the tar distillate is digested with carbon bisulphide to dissolve the pyrene, the ... [66%] 2022-09-02
Group: One of the main types of algebraic systems (cf. Algebraic system). (Mathematics) [53%] 2023-10-30
Group (mathematics): In mathematics, a group is a non-empty set and an operation that combines any two elements of the set to produce a third element of the set, in such a way that the operation is associative, an identity element ... (Mathematics) [53%] 2023-09-09 [Group theory] [Algebraic structures]...
Group (online social networking): A group (often termed as a community, e-group or club) is a feature in many social networking services which allows users to create, post, comment to and read from their own interest- and niche-specific forums, often within the ... (Online social networking) [53%] 2024-01-06 [Virtual communities] [Social media]...
Group (psychology): This psychology resource is a "stub". Learn how you can help Wikiversity to develop it. (Psychology) [53%] 2023-12-19 [Social psychology]
Group (stratigraphy): In geology, a group is a lithostratigraphic unit consisting of a series of related formations that have been classified together to form a group. Formations are the fundamental unit of stratigraphy. (Earth) [53%] 2023-11-04 [Stratigraphy] [Geological units]...
Group (mathematics): In mathematics, a group is a set endowed with a binary operation satisfying certain axioms, detailed below. For example, the set of integers with addition as the binary operation is a group. (Mathematics) [53%] 2023-06-16
Group (periodic table): Editor-In-Chief: C. Michael Gibson, M.S., M.D. (Periodic table) [53%] 2023-11-12 [Chemical element groups] [Periodic table]...
Group (military unit): A group is a military unit or a military formation that is most often associated with military aviation. The terms group and wing differ significantly from one country to another, as well as between different branches of a national defence ... (Military unit) [53%] 2023-12-17 [Groups (military aviation)] [Air force units and formations]...
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