|
Cell Phenomena
Cell most often refers to: * Cell (biology), the functional basic unit of life Cell may also refer to: Locations * Monastic cell, a small room, hut, or cave in which a religious recluse lives, alternatively the small precursor of a monastery with only a few monks or nuns * Prison cell, a room used to hold people in prisons Groups of people * Cell, a group of people in a cell group, a form of Christian church organization * Cell, a unit of a clandestine cell system, a penetration-resistant form of a secret or outlawed organization * Cellular organizational structure, such as in business management Science, mathematics, and technology Computing and telecommunications * Cell (EDA), a term used in an electronic circuit design schematics * Cell (microprocessor), a microprocessor architecture developed by Sony, Toshiba, and IBM * Memory cell (computing), the basic unit of (volatile or non-volatile) computer memory * Cell, a unit in a database table or spreadsheet, formed by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cell (biology)
The cell is the basic structural and functional unit of life forms. Every cell consists of a cytoplasm enclosed within a membrane, and contains many biomolecules such as proteins, DNA and RNA, as well as many small molecules of nutrients and metabolites.Cell Movements and the Shaping of the Vertebrate Body in Chapter 21 of Molecular Biology of the Cell '' fourth edition, edited by Bruce Alberts (2002) published by Garland Science. The Alberts text discusses how the "cellular building blocks" move to shape developing embryos. It is also common to describe small molecules such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CW Complex
A CW complex (also called cellular complex or cell complex) is a kind of a topological space that is particularly important in algebraic topology. It was introduced by J. H. C. Whitehead (open access) to meet the needs of homotopy theory. This class of spaces is broader and has some better categorical properties than simplicial complexes, but still retains a combinatorial nature that allows for computation (often with a much smaller complex). The ''C'' stands for "closure-finite", and the ''W'' for "weak" topology. Definition CW complex A CW complex is constructed by taking the union of a sequence of topological spaces\emptyset = X_ \subset X_0 \subset X_1 \subset \cdotssuch that each X_k is obtained from X_ by gluing copies of k-cells (e^k_\alpha)_\alpha, each homeomorphic to D^k, to X_ by continuous gluing maps g^k_\alpha: \partial e^k_\alpha \to X_. The maps are also called attaching maps. Each X_k is called the k-skeleton of the complex. The topology of X = \cup_ X_ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cell (music)
The 1957 ''Encyclopédie Larousse''quoted in Nattiez, Jean-Jacques (1990). ''Music and Discourse: Toward a Semiology of Music'' (''Musicologie générale et sémiologue'', 1987). Translated by Carolyn Abbate (1990). . defines a cell in music as a "small rhythmic and melodic design that can be isolated, or can make up one part of a thematic context". The cell may be distinguished from the figure or motif: the 1958 ''Encyclopédie Fasquelle'' defines a cell as "the smallest indivisible unit", unlike the motif, which may be divisible into more than one cell. "A cell can be developed, independent of its context, as a melodic fragment, it can be used as a developmental motif. It can be the source for the whole structure of the work; in that case it is called a generative cell." A rhythmic cell is a cell without melodic connotations. It may be entirely percussive or applied to different melodic segments. History The term "cell" (German: ''Keim'') derives from organic music theorists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Cell (play)
''The Cell'' is an Australian play by Robert Wales. The setting is in a school for delinquent girls. Background The play debuted in 1966. The play was published in 1971. 1968 Australian TV Version It was adapted for television by the ABC in 1968, directed by John Croyston, and broadcast as part of the Seek and Destroy series. That was a short lived anthology series which consisted of four BBC plays and one Australian play - ''The Cell'' was the Australian play. Australian TV drama was relatively rare at the time. ''The Cell'' was made when Australian TV stations were investing less in TV plays and more in serials. Plot Sister Catherine is in charge of a school for delinquent girls. She resents being passed over as Mother Superior of the Convent. When the new Mother Superior, Mother Denis, arrives, there is a clash of personalities between the two. This is heightened when Sister Catherine sides with a young nun, Sister Lenora, who has broken the discipline of the convent. When ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rudyard Kipling
Joseph Rudyard Kipling ( ; 30 December 1865 – 18 January 1936)''The Times'', (London) 18 January 1936, p. 12. was an English novelist, short-story writer, poet, and journalist. He was born in British India, which inspired much of his work. Kipling's works of fiction include the ''Jungle Book'' duology ('' The Jungle Book'', 1894; '' The Second Jungle Book'', 1895), ''Kim'' (1901), the '' Just So Stories'' (1902) and many short stories, including "The Man Who Would Be King" (1888). His poems include " Mandalay" (1890), " Gunga Din" (1890), "The Gods of the Copybook Headings" (1919), " The White Man's Burden" (1899), and "If—" (1910). He is seen as an innovator in the art of the short story.Rutherford, Andrew (1987). General Preface to the Editions of Rudyard Kipling, in "Puck of Pook's Hill and Rewards and Fairies", by Rudyard Kipling. Oxford University Press. His children's books are classics; one critic noted "a versatile and luminous narrative gift".Rutherford, Andrew ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cell (novel)
''Cell'' is a 2006 apocalyptic horror novel by American author Stephen King. The story follows a New England artist struggling to reunite with his young son after a mysterious signal broadcast over the global cell phone network turns the majority of his fellow humans into mindless vicious animals. Plot Clayton Riddell, a struggling artist from Maine, has just landed a graphic novel deal in Boston when "The Pulse", a signal sent out over the global cell phone network, suddenly turns every cell phone user into mindless zombie-like killers. Clay is standing in Boston Common when the Pulse hits, causing chaos to erupt around him near an ice cream truck. Civilization crumbles as the "phoners" attack each other and anyone in view. Amidst the chaos, Clay is thrown together with middle-aged Thomas McCourt and fifteen-year-old Alice Maxwell; the trio escapes to Tom's suburban home as Boston burns. The next day, they learn the "phoners" have begun foraging for food and banding together. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cell (Dragon Ball)
is a fictional character and a major villain in the '' Dragon Ball Z'' manga and anime created by Akira Toriyama. He makes his debut in chapter #361 "The Mysterious Monster, Finally Appears!!", first published in ''Weekly Shōnen Jump'' on 16 February 1992. Cell is an evil artificial life form created using cell samples from several major characters in the series. He travels back in time so he can become the perfect being. In order to reach this goal, he must absorb Androids 17 and 18. Creation and conception After Kazuhiko Torishima, Toriyama's former editor during ''Dr. Slump'' and early ''Dragon Ball'', expressed dissatisfaction with first Androids #19 and #20 and later Androids #17 and #18 as villains, Toriyama created Cell. Toriyama has expressed some kind of regret regarding the design of Cell, calling it tedious to draw all the little spots on his body. In addition, he did not initially plan for the character to be able to transform, but gave him this ability after h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cell (comics)
Morlocks are a group of mutant characters appearing in American comic books published by Marvel Comics. The characters are usually depicted as being associated with the X-Men in the Marvel Universe. Created by writer Chris Claremont and artist Paul Smith, they were named after the subterranean race of the same name in H. G. Wells' novel ''The Time Machine'', but unlike in the Wells book, they are not a faceless, threatening mass of villains. They first appeared as a group in ''The Uncanny X-Men'' #169 (May 1983). Caliban appeared prior to that, but he was not yet a member of the Morlocks. The Morlocks were depicted as an underground society (both literally and figuratively) of outcast mutants living as tunnel dwellers in the sewers, abandoned tunnels, and abandoned subway lines beneath New York City. The Morlocks were composed of mutant misfits, especially those mutants who, because of physical mutations or other conspicuous manifestations of their mutant genetics, were una ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Storm Cell
A storm cell is an air mass that contains up and down drafts in convective loops and that moves and reacts as a single entity, functioning as the smallest unit of a storm-producing system. An organized grouping of thunder clouds will thus be considered as a series of storm cells with their up/downdrafts being independent or interfering one with the other. Characteristics A storm cell extend over an area the size of a few tens of square milles/kilometers and last 30 minutes or so. When the updraft and the environmental wind shear is well coordinated, the size and the duration of the cell can be much greater leading to a supercell. Finally, storm cells can form on the outflow of previous cells leading to multicellular thunderstorms or mesoscale convective systems. Slow motion of these more intense storm cells or groups of cells can produce large precipitation accumulations and flash flood, or other dangerous phenomena like hail and tornadoes. Life cycle One can distinguish three s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Cell
A solar cell, or photovoltaic cell, is an electronic device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon.Solar Cells chemistryexplained.com It is a form of photoelectric cell, defined as a device whose electrical characteristics, such as , , or resistance, vary when exposed to light. Individual solar cell devices are often the electrical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photodetector
Photodetectors, also called photosensors, are sensors of light or other electromagnetic radiation. There is a wide variety of photodetectors which may be classified by mechanism of detection, such as Photoelectric effect, photoelectric or photochemical effects, or by various performance metrics, such as spectral response. Semiconductor-based photodetectors typically photo detector have a p–n junction that converts light photons into current. The absorbed photons make electron–hole pairs in the depletion region. Photodiodes and photo transistors are a few examples of photo detectors. Solar cells convert some of the light energy absorbed into electrical energy. Types Photodetectors may be classified by their mechanism for detection: * Photoemission or photoelectric effect: Photons cause electrons to transition from the conduction band of a material to free electrons in a vacuum or gas. * Thermal: Photons cause electrons to transition to mid-gap states then decay back to lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galvanic Cell
A galvanic cell or voltaic cell, named after the scientists Luigi Galvani and Alessandro Volta, respectively, is an electrochemical cell in which an electric current is generated from spontaneous Oxidation-Reduction reactions. A common apparatus generally consists of two different metals, each immersed in separate beakers containing their respective metal ions in solution that are connected by a salt bridge or separated by a porous membrane. Volta was the inventor of the voltaic pile, the first Battery (electricity), electrical battery. In common usage, the word "battery" has come to include a single galvanic cell, but a battery properly consists of multiple cells. History In 1780, Luigi Galvani discovered that when two different metals (e.g., copper and zinc) are in contact and then both are touched at the same time to two different parts of a muscle of a frog leg, to close the circuit, the frog's leg contracts. He called this "bioelectricity, animal electricity". The frog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
