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Column (other)
A column is a vertical structural element in architecture. Column or columns may also refer to: Art and entertainment * Column (periodical), a recurring piece or article in a newspaper or magazine * "Columns" (''How I Met Your Mother''), a 2007 episode of ''How I Met Your Mother'' * ''Columns'' (video game), a puzzle video game Computing and mathematics * Column (data store), a NoSQL object * Column (database), a set of data values of a particular type in a relational database * Column vector, an ''m'' × 1 matrix in linear algebra * Miller Columns, the data tree structure visualization technique Military * Column (formation), a military formation * Flying column, a combined arms independent military formation of a temporary nature Science * Column (botany) or gynostemium, a part of an orchid * Column chromatography, a method used to purify individual chemical compounds from mixtures of compounds * Column-based nucleic acid purification * Cortical column, a group of neurons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Column
A column or pillar in architecture and structural engineering is a structural element that transmits, through compression, the weight of the structure above to other structural elements below. In other words, a column is a compression member. The term ''column'' applies especially to a large round support (the shaft of the column) with a capital and a base or pedestal, which is made of stone, or appearing to be so. A small wooden or metal support is typically called a '' post''. Supports with a rectangular or other non-round section are usually called '' piers''. For the purpose of wind or earthquake engineering, columns may be designed to resist lateral forces. Other compression members are often termed "columns" because of the similar stress conditions. Columns are frequently used to support beams or arches on which the upper parts of walls or ceilings rest. In architecture, "column" refers to such a structural element that also has certain proportional and decorative f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Packed Bed
In chemical processing, a packed bed is a hollow tube, pipe, or other vessel that is filled with a packing material. The packing can be randomly filled with small objects like Raschig rings or else it can be a specifically designed structured packing. Packed beds may also contain catalyst particles or adsorbents such as zeolite pellets, granular activated carbon, etc. The purpose of a packed bed is typically to improve contact between two phases in a chemical or similar process. Packed beds can be used in a chemical reactor, a distillation process, or a scrubber, but packed beds have also been used to store heat in chemical plants. In this case, hot gases are allowed to escape through a vessel that is packed with a refractory material until the packing is hot. Air or other cool gas is then fed back to the plant through the hot bed, thereby pre-heating the air or gas feed. Applications Packed column In industry, a packed column is a type of packed bed used to perfo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Columns
A column or pillar in architecture and structural engineering is a structural element that transmits, through compression, the weight of the structure above to other structural elements below. In other words, a column is a compression member. The term ''column'' applies especially to a large round support (the shaft of the column) with a capital and a base or pedestal, which is made of stone, or appearing to be so. A small wooden or metal support is typically called a '' post''. Supports with a rectangular or other non-round section are usually called '' piers''. For the purpose of wind or earthquake engineering, columns may be designed to resist lateral forces. Other compression members are often termed "columns" because of the similar stress conditions. Columns are frequently used to support beams or arches on which the upper parts of walls or ceilings rest. In architecture, "column" refers to such a structural element that also has certain proportional and decorativ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Column Groups And Row Groups
In tables and matrices, a column group or row group usually refers to a subset of columns or rows, respectively. Short names or notational names include col group or colgroup, and row group or rowgroup. They can have varying uses depending on context: * In mathematics, a partitioned matrix is an interpretation of a matrix as being broken down into submatrices which may be more precisely referred to as a collection of row groups and column groups * In web development, colgroup is a standard HTML attribute and an HTML event attribute, for example used for color formatting of entire columns in HTML tables. The colgroup tag acts as a "parent container of one or more elements". Rowgroup is another HTML attribute. * In reporting (including business reporting, data reporting and financial reporting), colgroups and rowgroups can be used for constructing tables and matrices which dynamically adjusts the size of their columns and rows, respectively, by displaying the set of columns i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Columnar (other)
Columnar (or epithelium) is a type of epithelial cell. Columnar may also refer to: * Columnar cacti, a descriptive term for smaller cacti *Columnar database, a type of database which stores data tables by column rather than by row * Columnar disposition, a technique in encryption *Columnar jointing, a geological structure shaped as a regular array of polygonal prisms **Columnar basalt, a type of rock formed during the cooling of a thick lava flow *Columnar Peak, a subsidiary peak of Mount Garibaldi, British Columbia, Canada *Columnar phase, a class of floating crystals which can exist in a cylindrical shape * Columnar Valley, a valley in Victoria Land, eastern Antarctica See also *Column (other) * Columnaria, an extinct genus of rugose coral *Columnarios, silver coins that were minted by Spain from 1732 to 1773 *Columnaris Columnaris (also referred to as cottonmouth) is a symptom of disease in fish which results from an infection caused by the Gram-negative, aerobic, ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Collum (other)
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Collum may refer to: * , the Latin term for neck * Collum (millipedes), the first segment behind the head of millipedes Surnames * Herbert Collum (1914-1982), German organist, harpsichordist, composer, and conductor * Hugh Collum (1940–2005), British businessman * Jackie Collum (born 1927), American Major League Baseball pitcher * Jason Paul Collum (born 1973), American film maker * John Collum (1926–1962), American actor * Vera Collum (1883–1957), British journalist, suffragist, anthropologist, photographer, radiographer and writer * Willie Collum (born 1979), Scottish football referee See also * Columella (other) * Column (other) * Cervix (other) * Neck (other) The neck is the body part between the head and torso of many animals. Neck may also refer to: Other uses in anatomy Bones * Femur neck, part of the femur bone * Surgical neck of the humerus * Anatomical neck of humerus * Neck of the malleus, part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fifth Column
A fifth column is any group of people who undermine a larger group or nation from within, usually in favor of an enemy group or another nation. According to Harris Mylonas and Scott Radnitz, "fifth columns" are “domestic actors who work to undermine the national interest, in cooperation with external rivals of the state." The activities of a fifth column can be overt or clandestine. Forces gathered in secret can mobilize openly to assist an external attack. This term is also extended to organised actions by military personnel. Clandestine fifth column activities can involve acts of sabotage, disinformation, espionage, and/or terrorism executed within defense lines by secret sympathizers with an external force. Origin The term "fifth column" originated in Spain (originally ''quinta columna'') during the early phase of the Spanish Civil War. It gained popularity in the Republican faction (Spanish Civil War), Loyalist faction media in early October 1936 and immediately started to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Column (typography)
In typography, a column is one or more vertical blocks of content positioned on a page, separated by gutters (vertical whitespace) or rules (thin lines, in this case vertical). Columns are most commonly used to break up large bodies of text that cannot fit in a single block of text on a page. Additionally, columns are used to improve page composition and readability. Newspapers very frequently use complex multi-column layouts to break up different stories and longer bodies of texts within a story. Column can also more generally refer to the vertical delineations created by a typographic grid system which type and image may be positioned. In page layout, the whitespace on the outside of the page (bounding the first and last columns) are known as margins; the gap between two facing pages is also considered a gutter, since there are columns on both sides. (Any gutter can also be referred to as a margin, but exterior and horizontal margins are not gutters.) In some cases, column num ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Columns (juggling)
In toss juggling, columns, also known as One-up Two-up, is a juggling trick or pattern where the balls are thrown upwards without any sideways motion, distinguishing it from the fountain. The simplest version involves having three balls, with two going up simultaneously on either side, followed by one going up in the middle.Dancey, Charlie. ''Charlie Dancey's Encyclopædia of Ball Juggling'' p.111. Butterfingers: Bath, England 1994. One way to accomplish this is to juggle 2 balls in one hand and one ball in the other, so one hand has to move faster and further than in a regular pattern (cascade), whilst the other remains almost stationary. The hand juggling the center ball can alternate with each repeat to make the pattern symmetric. Variations The two-in-one is a variant using two balls in one hand (the hand with the "lone" ball is unused), "where the balls travel vertically in their own separate paths...Columns is really just a Two-in-One in one hand with a third ball th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eruption Column
An eruption column or eruption plume is a cloud of super-heated ash and tephra suspended in gases emitted during an explosive volcanic eruption. The volcanic materials form a vertical column or plume that may rise many kilometers into the air above the vent of the volcano. In the most explosive eruptions, the eruption column may rise over , penetrating the stratosphere. Stratospheric injection of aerosols by volcanoes is a major cause of short-term climate change. A common occurrence in explosive eruptions is ''column collapse'' when the eruption column is or becomes too dense to be lifted high into the sky by air convection, and instead falls down the slopes of the volcano to form pyroclastic flows or surges (although the latter is less dense). On some occasions, if the material is not dense enough to fall, it may create pyrocumulonimbus clouds. Formation Eruption columns form in explosive volcanic activity, when the high concentration of volatile materials in the risin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Column (fluid Dynamics)
In hydrodynamics, a plume or a column is a vertical body of one fluid moving through another. Several effects control the motion of the fluid, including momentum (inertia), diffusion and buoyancy (density differences). Pure ''jets'' and pure ''plumes'' define flows that are driven entirely by momentum and buoyancy effects, respectively. Flows between these two limits are usually described as forced plumes or buoyant jets. "Buoyancy is defined as being positive" when, in the absence of other forces or initial motion, the entering fluid would tend to rise. Situations where the density of the plume fluid is greater than its surroundings (i.e. in still conditions, its natural tendency would be to sink), but the flow has sufficient initial momentum to carry it some distance vertically, are described as being negatively buoyant. Movement Usually, as a plume moves away from its source, it widens because of entrainment of the surrounding fluid at its edges. Plume shapes can be influen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertebral Column
The vertebral column, also known as the backbone or spine, is part of the axial skeleton. The vertebral column is the defining characteristic of a vertebrate in which the notochord (a flexible rod of uniform composition) found in all chordates has been replaced by a segmented series of bone: vertebrae separated by intervertebral discs. Individual vertebrae are named according to their region and position, and can be used as anatomical landmarks in order to guide procedures such as lumbar punctures. The vertebral column houses the spinal canal, a cavity that encloses and protects the spinal cord. There are about 50,000 species of animals that have a vertebral column. The human vertebral column is one of the most-studied examples. Many different diseases in humans can affect the spine, with spina bifida and scoliosis being recognisable examples. The general structure of human vertebrae is fairly typical of that found in mammals, reptiles, and birds. The shape of the verte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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