Lettuce (Lactuca sativa) is an annual plant of the family Asteraceae. It is most often grown as a leaf vegetable, but sometimes for its stem and seeds. Lettuce is most often used for salads, although it is also seen in other kinds of food, such as soups, sandwiches and wraps; it can also be grilled. One variety, celtuce (asparagus lettuce), is grown for its stems, which are eaten either raw or cooked. In addition to its main use as a leafy green, it has also gathered religious and medicinal significance over centuries of human consumption. Europe and North America originally dominated the market for lettuce, but by the late 20th century the consumption of lettuce had spread throughout the world. As of 2021[update], world production of lettuce and chicory was 27 million tonnes, 53percent of which came from China. (Full article...)
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Durrell's vontsira (Salanoia durrelli) is a small, reddish-brown, fox-like mammal native to the island of Madagascar. Discovered in 2004, it lives only in the biodiverse wetlands of Lake Alaotra. Durrell's vontsira belongs to the family Eupleridae, a group of meat-eating, cat- or fox-like mammals (of the order Carnivora) found only on Madagascar. The species is closely related to the brown-tailed mongoose (Salanoia concolor), with which it forms the genus Salanoia. The two are genetically similar, but morphologically distinct, and S. durrelli was described as a new species in 2010. (Full article...)
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Adult
The queen angelfish (Holacanthus ciliaris), also known as the blue angelfish, golden angelfish, or yellow angelfish, is a species of marine angelfish found in the western Atlantic Ocean. It is a benthic (ocean floor) warm-water species that lives in coral reefs. It is recognized by its blue and yellow coloration and a distinctive spot or "crown" on its forehead. This crown distinguishes it from the closely related and similar-looking Bermuda blue angelfish (Holacanthus bermudensis), with which it overlaps in range and can interbreed. (Full article...)
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Annotated satellite image of the chain
The Mono–Inyo Craters are a volcanic chain of craters, domes and lava flows in Mono County, Eastern California. The chain stretches 25 miles (40 km) from the northwest shore of Mono Lake to the south of Mammoth Mountain. The Mono Lake Volcanic Field forms the northernmost part of the chain and consists of two volcanic islands in the lake and one cinder cone volcano on its northwest shore. Most of the Mono Craters, which make up the bulk of the northern part of the Mono–Inyo chain, are phreatic (steam explosion) volcanoes that have since been either plugged or over-topped by rhyolite domes and lava flows. The Inyo volcanic chain form much of the southern part of the chain and consist of phreatic explosion pits, and rhyolitic lava flows and domes. The southernmost part of the chain consists of fumaroles and explosion pits on Mammoth Mountain and a set of cinder cones south of the mountain; the latter are called the Red Cones. (Full article...)
Hurricane Florence, seen from the International Space Station, showing a well-defined eye at the center of the storm The eye is a region of mostly calm weather at the center of a tropical cyclone. The eye of a storm is a roughly circular area, typically 30–65 kilometers (19–40 miles; 16–35 nautical miles) in diameter. It is surrounded by the eyewall, a ring of towering thunderstorms where the most severe weather and highest winds of the cyclone occur. The cyclone's lowest barometric pressure occurs in the eye and can be as much as 15 percent lower than the pressure outside the storm. (Full article...)
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Composite photo of the mounted holotype skeleton shortly before display in 1905
Major urinary proteins (Mups), also known as α2u-globulins, are a subfamily of proteins found in abundance in the urine and other secretions of many animals. Mups provide a small range of identifying information about the donor animal, when detected by the vomeronasal organ of the receiving animal. They belong to a larger family of proteins known as lipocalins. Mups are encoded by a cluster of genes, located adjacent to each other on a single stretch of DNA, that varies greatly in number between species: from at least 21 functional genes in mice to none in humans. Mup proteins form a characteristic glove shape, encompassing a ligand-binding pocket that accommodates specific small organic chemicals. (Full article...)
Franklin in 2006 during the launch of The Ursula Franklin Reader at Massey College in Toronto
Ursula Martius FranklinCCOOntFRSC (16 September 1921 – 22 July 2016) was a Canadian metallurgist, research physicist, author, and educator who taught at the University of Toronto for more than 40 years. Franklin is best known for her writings on the political and social effects of technology. She was the author of The Real World of Technology, which is based on her 1989 Massey Lectures; The Ursula Franklin Reader: Pacifism as a Map, a collection of her papers, interviews, and talks; and Ursula Franklin Speaks: Thoughts and Afterthoughts, containing 22 of her speeches and five interviews between 1986 and 2012. Franklin was a practising Quaker and actively worked on behalf of pacifist and feminist causes. She wrote and spoke extensively about the futility of war and the connection between peace and social justice. Franklin received numerous honours and awards, including the Governor General's Award in Commemoration of the Persons Case for promoting the equality of girls and women in Canada and the Pearson Medal of Peace for her work in advancing human rights. In 2012, she was inducted into the Canadian Science and Engineering Hall of Fame. A Toronto high school, Ursula Franklin Academy, as well as Ursula Franklin Street on the University of Toronto campus, have been named in her honor. (Full article...)
... que La ciencia de Dune contiene un análisis científico de los conceptos ficticios de la franquicia Dune , como los gusanos de arena , los destiltrajes y la droga ficticia melange ?
Para obtener recursos para editores y colaborar con otros editores para mejorar los artículos de Wikipedia relacionados con la ciencia, visita WikiProject Science .
Este portal necesita ser actualizado . Por favor, ayude a actualizar este portal para reflejar eventos recientes o nueva información disponible. Puede encontrar discusiones relevantes en la página de discusión .
Muchos fenómenos que ocurren naturalmente se aproximan a una distribución normal.
Completar solicitudes de otros editores en las páginas de discusión de artículos relacionados con la ciencia (ejemplos)
Ampliar 2024 en ciencia y/o otros artículos para temas relacionados con la ciencia del año (en el cuadro de la derecha)
Crear nuevos artículos para los elementos de este artículo, principalmente artículos relacionados con nuevos campos/temas/hallazgos científicos (la página ya no utiliza enlaces rojos, pero podrá identificar rápidamente posibles artículos nuevos al leerla; aquí puede encontrar una versión con más de 60 ejemplos con enlaces rojos)
Algunos de los elementos de las listas aún no se han integrado en sus artículos wikivinculados; si agrega un estudio allí, también debería ser relevante para al menos otro artículo.
Busque [ ¿cómo? ] estudios publicados bajo una licencia abierta compatible (como CC BY 4.0) y cargue las imágenes de los estudios con descripciones del estudio y agregue estas imágenes a los artículos si son relevantes y útiles allí.
Cuando un estudio con una imagen útil se publica bajo una licencia incompatible o poco clara (o la imagen no se publica en un estudio sino en otro lugar), puedes contactar a sus autores (Twitter/Mail) y pedirles que te den permiso para subirlas bajo CC BY 4.0 (o si pueden subir la/s imagen/es bajo una licencia compatible)
También puedes pensar si las imágenes serían útiles mientras lees un artículo relacionado con la ciencia y luego buscar dichas imágenes:
Si ya existen, agréguelos (si ya están en WMCommons) o cárguelos (si la licencia es correcta) o solicite permisos a sus autores.
A plot of normal distribution (or bell-shaped curve) where each band has a width of 1 standard deviation – See also: 68–95–99.7 rule. In statistics, the standard deviation is a measure of the amount of variation of the values of a variable about its mean. A low standard deviation indicates that the values tend to be close to the mean (also called the expected value) of the set, while a high standard deviation indicates that the values are spread out over a wider range. The standard deviation is commonly used in the determination of what constitutes an outlier and what does not. (Full article...)
Sci-Hub is a shadow library website that provides free access to millions of research papers, regardless of copyright, by bypassing publishers' paywalls in various ways. Unlike Library Genesis, it does not provide access to books. Sci-Hub was founded in Kazakhstan by Alexandra Elbakyan in 2011, in response to the high cost of research papers behind paywalls (see Serials crisis). The site is extensively used worldwide. In September 2019, the site's operator(s) said that it served approximately 400,000 requests per day. In addition to its intensive use, Sci-Hub stands out among other shadow libraries because of its easy use/reliability and because of the enormous size of its collection; a 2018 study estimated that Sci-Hub provided access to 95% of all scholarly publications with issued DOI numbers. On 15 July 2022, Sci-Hub reported that its collection comprised 88,343,822 files. Since December 2020, the site has paused uploads due to legal troubles. (Full article...)
A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic. Each prefix has a unique symbol that is prepended to any unit symbol. The prefix kilo-, for example, may be added to gram to indicate multiplication by one thousand: one kilogram is equal to one thousand grams. The prefix milli-, likewise, may be added to metre to indicate division by one thousand; one millimetre is equal to one thousandth of a metre. (Full article...)
Aquí se muestran artículos destacados , que representan algunos de los mejores contenidos de Wikipedia en inglés.
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Artículos vitales para entender la Ciencia.
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