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8945793 | https://en.wikipedia.org/wiki/Underwater%20tunnel | Underwater tunnel | An underwater tunnel is a tunnel which is partly or wholly constructed under the sea or a river. They are often used where building a bridge or operating a ferry link is unviable, or to provide competition or relief for existing bridges or ferry links. While short tunnels are often road tunnels which may admit motorize... | Technology | Transport infrastructure | null |
8946189 | https://en.wikipedia.org/wiki/Smoking%20pipe | Smoking pipe | A smoking pipe is used to taste the smoke of a burning substance; most common is a tobacco pipe. Pipes are commonly made from briar, heather, corncob, meerschaum, clay, cherry, glass, porcelain, ebonite and acrylic.
Dutch pipe smoking
During the 17th century, pipe smoking became a new trend among the Dutch young, in ... | Biology and health sciences | Health and fitness: General | Health |
8948725 | https://en.wikipedia.org/wiki/Wentletrap | Wentletrap | Wentletraps are small, often white, very high-spired, predatory or ectoparasitic sea snails, marine gastropod mollusks in the family Epitoniidae.
The word wentletrap originated in Dutch (wenteltrap), and it means spiral staircase. These snails are sometimes also called "staircase shells", and "ladder shells".
The fam... | Biology and health sciences | Gastropods | Animals |
7432140 | https://en.wikipedia.org/wiki/Rambouillet%20sheep | Rambouillet sheep | The Rambouillet is a breed of sheep (Ovis aries). It is also known as the Rambouillet Merino or the French Merino.
History
The development of the Rambouillet breed started in 1786, when Louis XVI purchased over 300 Spanish Merinos (318 ewes, 41 rams, seven wethers) from his cousin Charles III of Spain. The flock was ... | Biology and health sciences | Sheep | Animals |
9637495 | https://en.wikipedia.org/wiki/Winter%20squash | Winter squash | Winter squash is an annual fruit representing several squash species within the genus Cucurbita. Late-growing, less symmetrical, odd-shaped, rough or warty varieties, small to medium in size, but with long-keeping qualities and hard rinds, are usually called winter squash. They differ from summer squash in that they a... | Biology and health sciences | Botanical fruits used as culinary vegetables | Plants |
4277163 | https://en.wikipedia.org/wiki/NGC%205548 | NGC 5548 | NGC 5548 is a Type I Seyfert galaxy with a bright, active nucleus. This activity is caused by matter flowing onto a 65 million solar mass () supermassive black hole at the core. Morphologically, this is an unbarred lenticular galaxy with tightly-wound spiral arms, while shell and tidal tail features suggest that it has... | Physical sciences | Notable galaxies | Astronomy |
4279049 | https://en.wikipedia.org/wiki/Organophosphorus%20chemistry | Organophosphorus chemistry | Organophosphorus chemistry is the scientific study of the synthesis and properties of organophosphorus compounds, which are organic compounds containing phosphorus. They are used primarily in pest control as an alternative to chlorinated hydrocarbons that persist in the environment. Some organophosphorus compounds are ... | Physical sciences | Organic compounds | null |
627608 | https://en.wikipedia.org/wiki/OpenDocument | OpenDocument | The Open Document Format for Office Applications (ODF), also known as OpenDocument, standardized as ISO 26300, is an open file format for word processing documents, spreadsheets, presentations and graphics and using ZIP-compressed XML files. It was developed with the aim of providing an open, XML-based file format spec... | Technology | File formats | null |
627740 | https://en.wikipedia.org/wiki/Monal | Monal | A monal is a bird of genus Lophophorus of the pheasant family, Phasianidae.
Description
The males all have colorful, iridescent plumage. Their physique is rather plump, and their diet consists of plants such as roots and bulbs and insects. During mating, the males are polygamous and mate with several females. The fem... | Biology and health sciences | Galliformes | Animals |
628485 | https://en.wikipedia.org/wiki/Television%20set | Television set | A television set or television receiver (more commonly called TV, TV set, television, telly, or tele) is an electronic device for viewing and hearing television broadcasts, or as a computer monitor. It combines a tuner, display, and loudspeakers. Introduced in the late 1920s in mechanical form, television sets became a... | Technology | Broadcasting | null |
628721 | https://en.wikipedia.org/wiki/Trans-European%20Transport%20Network | Trans-European Transport Network | The Trans-European Transport Network (TEN-T) is a planned network of roads, railways, airports and water infrastructure in the European Union. The TEN-T network is part of a wider system of Trans-European Networks (TENs), including a telecommunications network (eTEN) and a proposed energy network (TEN-E or Ten-Energy).... | Technology | Ground transportation networks | null |
628811 | https://en.wikipedia.org/wiki/Chlorella | Chlorella | Chlorella is a genus of about thirteen species of single-celled or colonial green algae of the division Chlorophyta. The cells are spherical in shape, about 2 to 10 μm in diameter, and are without flagella. Their chloroplasts contain the green photosynthetic pigments chlorophyll-a and -b. In ideal conditions cells of C... | Biology and health sciences | Green algae | Plants |
629026 | https://en.wikipedia.org/wiki/Meridian%20%28astronomy%29 | Meridian (astronomy) | In astronomy, the meridian is the great circle passing through the celestial poles, as well as the zenith and nadir of an observer's location. Consequently, it contains also the north and south points on the horizon, and it is perpendicular to the celestial equator and horizon. Meridians, celestial and geographical, a... | Physical sciences | Celestial sphere: General | Astronomy |
629684 | https://en.wikipedia.org/wiki/Immunodeficiency | Immunodeficiency | Immunodeficiency, also known as immunocompromisation, is a state in which the immune system's ability to fight infectious diseases and cancer is compromised or entirely absent. Most cases are acquired ("secondary") due to extrinsic factors that affect the patient's immune system. Examples of these extrinsic factors inc... | Biology and health sciences | Concepts | Health |
630020 | https://en.wikipedia.org/wiki/Dung%20beetle | Dung beetle | Dung beetles are beetles that feed on feces. Some species of dung beetles can bury dung 250 times their own mass in one night..
Many dung beetles, known as rollers, roll dung into round balls, which are used as a food source or breeding chambers. Other dung beetles like Euoniticellus intermedius, known as tunnelers, b... | Biology and health sciences | Beetles (Coleoptera) | null |
630426 | https://en.wikipedia.org/wiki/Baton%20round | Baton round | Baton rounds, also known as kinetic impact projectiles (KIPs), are a less lethal alternative to traditional bullets. Baton rounds are designed to impact rather than to penetrate and are typically used for riot control.
Common types of baton round have included the:
Bean bag round, a less-lethal projectile fired from... | Technology | Less-lethal weapons | null |
630558 | https://en.wikipedia.org/wiki/Puya%20%28plant%29 | Puya (plant) | Puya is a genus of the botanical family Bromeliaceae. It is the sole genus of the subfamily Puyoideae, and is composed of 226 species. These terrestrial plants are native to the Andes Mountains of South America and southern Central America. Many of the species are monocarpic, with the parent plant dying after one flow... | Biology and health sciences | Poales | null |
5705108 | https://en.wikipedia.org/wiki/Borohydride | Borohydride | Borohydride refers to the anion , which is also called tetrahydridoborate, and its salts. Borohydride or hydroborate is also the term used for compounds containing , where n is an integer from 0 to 3, for example cyanoborohydride or cyanotrihydroborate and triethylborohydride or triethylhydroborate . Borohydrides find... | Physical sciences | Borohydride salts | Chemistry |
13673345 | https://en.wikipedia.org/wiki/Car | Car | A car, or an automobile, is a motor vehicle with wheels. Most definitions of cars state that they run primarily on roads, seat one to eight people, have four wheels, and mainly transport people rather than cargo. There are around one billion cars in use worldwide.
The French inventor Nicolas-Joseph Cugnot built the fi... | Technology | Transportation | null |
13677688 | https://en.wikipedia.org/wiki/Potassium-40 | Potassium-40 | Potassium-40 (K) is a radioactive isotope of potassium which has a long half-life of 1.25 billion years. It makes up about 0.012% (120 ppm) of natural potassium.
Potassium-40 undergoes three types of radioactive decay. In about 89.28% of events, it decays to calcium-40 (Ca) with emission of a beta particle (β, an elec... | Physical sciences | Group 1 | Chemistry |
1056536 | https://en.wikipedia.org/wiki/Ant%20colony | Ant colony | An ant colony is a population of ants, typically from a single species, capable of maintaining their complete lifecycle. Ant colonies are eusocial, communal, and efficiently organized and are very much like those found in other social Hymenoptera, though the various groups of these developed sociality independently thr... | Biology and health sciences | Shelters and structures | Animals |
1057083 | https://en.wikipedia.org/wiki/Microbial%20ecology | Microbial ecology | Microbial ecology (or environmental microbiology) is the ecology of microorganisms: their relationship with one another and with their environment. It concerns the three major domains of life—Eukaryota, Archaea, and Bacteria—as well as viruses. This relationship is often mediated by secondary metabolites produced by mi... | Biology and health sciences | Ecology | Biology |
1057147 | https://en.wikipedia.org/wiki/Myrmecia%20%28ant%29 | Myrmecia (ant) | Myrmecia is a genus of ants first established by Danish zoologist Johan Christian Fabricius in 1804. The genus is a member of the subfamily Myrmeciinae of the family Formicidae. Myrmecia is a large genus of ants, comprising at least 93 species that are found throughout Australia and its coastal islands, while a single ... | Biology and health sciences | Hymenoptera | Animals |
1059613 | https://en.wikipedia.org/wiki/Space%20capsule | Space capsule | A space capsule is a spacecraft designed to transport cargo, scientific experiments, and/or astronauts to and from space. Capsules are distinguished from other spacecraft by the ability to survive reentry and return a payload to the Earth's surface from orbit or sub-orbit, and are distinguished from other types of reco... | Technology | Basics_6 | null |
1059742 | https://en.wikipedia.org/wiki/Fire%20brick | Fire brick | A fire brick, firebrick, fireclay brick, or refractory brick is a block of ceramic material used in lining furnaces, kilns, fireboxes, and fireplaces. A refractory brick is built primarily to withstand high temperature, but will also usually have a low thermal conductivity for greater energy efficiency. Usually dense ... | Technology | Building materials | null |
1060624 | https://en.wikipedia.org/wiki/Newton%27s%20rings | Newton's rings | Newton's rings is a phenomenon in which an interference pattern is created by the reflection of light between two surfaces, typically a spherical surface and an adjacent touching flat surface. It is named after Isaac Newton, who investigated the effect in 1666. When viewed with monochromatic light, Newton's rings appea... | Physical sciences | Optics | Physics |
3141503 | https://en.wikipedia.org/wiki/Chemical%20nomenclature | Chemical nomenclature | Chemical nomenclature is a set of rules to generate systematic names for chemical compounds. The nomenclature used most frequently worldwide is the one created and developed by the International Union of Pure and Applied Chemistry (IUPAC).
IUPAC Nomenclature ensures that each compound (and its various isomers) have on... | Physical sciences | Nomenclature | Chemistry |
3142619 | https://en.wikipedia.org/wiki/Transjakarta | Transjakarta | Transjakarta (stylised in all-lowercase, often erroneously called Busway, sometimes shortened as TJ and branded as TiJe) or Jakarta BRT is a bus rapid transit (BRT) system in Jakarta, Indonesia. The first BRT system in Southeast Asia, it commenced operations on 15 January 2004 to provide a fast public transport system ... | Technology | Asia_2 | null |
3143089 | https://en.wikipedia.org/wiki/Repeated%20game | Repeated game | In game theory, a repeated game (or iterated game) is an extensive form game that consists of a number of repetitions of some base game (called a stage game). The stage game is usually one of the well-studied 2-person games. Repeated games capture the idea that a player will have to take into account the impact of the... | Mathematics | Game theory | null |
3143285 | https://en.wikipedia.org/wiki/Chemosterilant | Chemosterilant | A chemosterilant is a chemical compound that causes reproductive sterility in an organism. Chemosterilants are particularly useful in controlling the population of species that are known to cause disease, such as insects, or species that are, in general, economically damaging. The sterility induced by chemosterilants c... | Technology | Pest and disease control | null |
3143591 | https://en.wikipedia.org/wiki/Euclid%27s%20theorem | Euclid's theorem | Euclid's theorem is a fundamental statement in number theory that asserts that there are infinitely many prime numbers. It was first proven by Euclid in his work Elements. There are several proofs of the theorem.
Euclid's proof
Euclid offered a proof published in his work Elements (Book IX, Proposition 20), which is p... | Mathematics | Other | null |
1625082 | https://en.wikipedia.org/wiki/Weak%20isospin | Weak isospin | In particle physics, weak isospin is a quantum number relating to the electrically charged part of the weak interaction: Particles with half-integer weak isospin can interact with the bosons; particles with zero weak isospin do not.
Weak isospin is a construct parallel to the idea of isospin under the strong interacti... | Physical sciences | Quantum numbers | Physics |
1625625 | https://en.wikipedia.org/wiki/Car%20wash | Car wash | A car wash, or auto wash, is a facility used to clean the exterior, and in some cases the interior, of cars. Car washes can be self-service, full-service (with attendants who wash the vehicle), or fully automated (possibly connected to a filling station). Car washes may also be events where people pay to have their ca... | Technology | Concepts of ground transport | null |
1627000 | https://en.wikipedia.org/wiki/Australopithecus%20africanus | Australopithecus africanus | Australopithecus africanus is an extinct species of australopithecine which lived between about 3.3 and 2.1 million years ago in the Late Pliocene to Early Pleistocene of South Africa. The species has been recovered from Taung, Sterkfontein, Makapansgat, and Gladysvale. The first specimen, the Taung child, was describe... | Biology and health sciences | Australopithecines | Biology |
1627129 | https://en.wikipedia.org/wiki/Synchronous%20circuit | Synchronous circuit | In digital electronics, a synchronous circuit is a digital circuit in which the changes in the state of memory elements are synchronized by a clock signal. In a sequential digital logic circuit, data is stored in memory devices called flip-flops or latches. The output of a flip-flop is constant until a pulse is appl... | Technology | Digital logic | null |
1627162 | https://en.wikipedia.org/wiki/Asynchronous%20circuit | Asynchronous circuit | Asynchronous circuit (clockless or self-timed circuit) is a sequential digital logic circuit that does not use a global clock circuit or signal generator to synchronize its components. Instead, the components are driven by a handshaking circuit which indicates a completion of a set of instructions. Handshaking works b... | Technology | Digital logic | null |
1627853 | https://en.wikipedia.org/wiki/Newman%20projection | Newman projection | A Newman projection is a drawing that helps visualize the 3-dimensional structure of a molecule. This projection most commonly sights down a carbon-carbon bond, making it a very useful way to visualize the stereochemistry of alkanes. A Newman projection visualizes the conformation of a chemical bond from front to back,... | Physical sciences | Stereochemistry | Chemistry |
1627862 | https://en.wikipedia.org/wiki/Eclipsed%20conformation | Eclipsed conformation | In chemistry an eclipsed conformation is a conformation in which two substituents X and Y on adjacent atoms A, B are in closest proximity, implying that the torsion angle X–A–B–Y is 0°. Such a conformation can exist in any open chain, single chemical bond connecting two sp3-hybridised atoms, and it is normally a confor... | Physical sciences | Stereochemistry | Chemistry |
1628107 | https://en.wikipedia.org/wiki/Ulmus%20rubra | Ulmus rubra | Ulmus rubra, the slippery elm, is a species of elm native to eastern North America.
Other common names include red elm, gray elm, soft elm, moose elm, and Indian elm.
Description
Ulmus rubra is a medium-sized deciduous tree with a spreading head of branches, commonly growing to , very occasionally over in height. It... | Biology and health sciences | Rosales | Plants |
1629198 | https://en.wikipedia.org/wiki/Saint%20Petersburg%20Metro | Saint Petersburg Metro | The Saint Petersburg Metro () is a rapid transit system in Saint Petersburg, Russia. Construction began in early 1941, but was put on hold due to World War II and the subsequent Siege of Leningrad, during which the constructed stations were used as bomb shelters. It was finally opened on 15 November 1955.
Formerly kno... | Technology | Russia | null |
1629332 | https://en.wikipedia.org/wiki/Schinus | Schinus | Schinus is a genus of flowering trees and tall shrubs in the sumac family, Anacardiaceae. Members of the genus are commonly known as pepper trees. The Peruvian pepper tree (Schinus molle) is the source of the spice known as pink peppercorn.
The species of Schinus are native to South America, ranging from Peru and nort... | Biology and health sciences | Sapindales | Plants |
8955397 | https://en.wikipedia.org/wiki/Internal%20structure%20of%20the%20Moon | Internal structure of the Moon | Having a mean density of 3,346.4 kg/m3, the Moon is a differentiated body, being composed of a geochemically distinct crust, mantle, and planetary core. This structure is believed to have resulted from the fractional crystallization of a magma ocean shortly after its formation about 4.5 billion years ago. The energy re... | Physical sciences | Solar System | Astronomy |
8955468 | https://en.wikipedia.org/wiki/Selenography | Selenography | Selenography is the study of the surface and physical features of the Moon (also known as geography of the Moon, or selenodesy). Like geography and areography, selenography is a subdiscipline within the field of planetary science. Historically, the principal concern of selenographists was the mapping and naming of the ... | Physical sciences | Solar System | Astronomy |
8960524 | https://en.wikipedia.org/wiki/Double%20Cluster | Double Cluster | The Double Cluster (also known as Caldwell 14) consists of the open clusters NGC 869 and NGC 884 (often designated h Persei and χ (chi) Persei, respectively), which are close together in the constellation Perseus. Both visible with the naked eye, NGC 869 and NGC 884 lie at a distance of about 7,500 light years in the P... | Physical sciences | Notable star clusters | Astronomy |
62332 | https://en.wikipedia.org/wiki/Deep-sea%20fish | Deep-sea fish | Deep-sea fish are fish that live in the darkness below the sunlit surface waters, that is below the epipelagic or photic zone of the sea. The lanternfish is, by far, the most common deep-sea fish. Other deep-sea fishes include the flashlight fish, cookiecutter shark, bristlemouths, anglerfish, viperfish, and some speci... | Biology and health sciences | Fishes | null |
62366 | https://en.wikipedia.org/wiki/Moa | Moa | Moa (order Dinornithiformes) are an extinct group of flightless birds formerly endemic to New Zealand. During the Late Pleistocene-Holocene, there were nine species (in six genera). The two largest species, Dinornis robustus and Dinornis novaezelandiae, reached about in height with neck outstretched, and weighed about... | Biology and health sciences | Ratites | null |
62400 | https://en.wikipedia.org/wiki/Secretariat%20%28horse%29 | Secretariat (horse) | Secretariat (March 30, 1970 – October 4, 1989), also known as Big Red, was a champion American thoroughbred racehorse who was the ninth winner of the American Triple Crown, setting and still holding the fastest time record in all three of its constituent races. He is widely considered to be the greatest racehorse of al... | Biology and health sciences | Individual animals | Animals |
62404 | https://en.wikipedia.org/wiki/Lovebird | Lovebird | Lovebird is the common name for the genus Agapornis, a small group of parrots in the Old World parrot family Psittaculidae. Of the nine species in the genus, all are native to the African continent, with the grey-headed lovebird being native to the African island of Madagascar. Social and affectionate, the name comes f... | Biology and health sciences | Psittaciformes | Animals |
62405 | https://en.wikipedia.org/wiki/Tarsier | Tarsier | Tarsiers ( ) are haplorhine primates of the family Tarsiidae, which is, itself, the lone extant family within the infraorder Tarsiiformes. Although the group was, prehistorically, more globally widespread, all of the species living today are restricted to Maritime Southeast Asia, predominantly in Brunei, Indonesia, Mal... | Biology and health sciences | Primates | null |
62413 | https://en.wikipedia.org/wiki/Schooner | Schooner | A schooner ( ) is a type of sailing vessel defined by its rig: fore-and-aft rigged on all of two or more masts and, in the case of a two-masted schooner, the foremast generally being shorter than the mainmast. A common variant, the topsail schooner also has a square topsail on the foremast, to which may be added a topg... | Technology | Naval transport | null |
62462 | https://en.wikipedia.org/wiki/Umami | Umami | Umami ( from ), or savoriness, is one of the five basic tastes. It is characteristic of broths and cooked meats.
People taste umami through taste receptors that typically respond to glutamates and nucleotides, which are widely present in meat broths and fermented products. Glutamates are commonly added to some foods... | Biology and health sciences | Sensory nervous system | Biology |
62529 | https://en.wikipedia.org/wiki/Sea%20level | Sea level | Mean sea level (MSL, often shortened to sea level) is an average surface level of one or more among Earth's coastal bodies of water from which heights such as elevation may be measured. The global MSL is a type of vertical datuma standardised geodetic datumthat is used, for example, as a chart datum in cartography and ... | Physical sciences | Oceanography | null |
62603 | https://en.wikipedia.org/wiki/Domain%20%28biology%29 | Domain (biology) | In biological taxonomy, a domain ( or ) (Latin: regio), also dominion, superkingdom, realm, or empire, is the highest taxonomic rank of all organisms taken together. It was introduced in the three-domain system of taxonomy devised by Carl Woese, Otto Kandler and Mark Wheelis in 1990.
According to the domain system, th... | Biology and health sciences | Genetics and taxonomy | null |
62641 | https://en.wikipedia.org/wiki/Vector%20field | Vector field | In vector calculus and physics, a vector field is an assignment of a vector to each point in a space, most commonly Euclidean space . A vector field on a plane can be visualized as a collection of arrows with given magnitudes and directions, each attached to a point on the plane. Vector fields are often used to model,... | Mathematics | Multivariable and vector calculus | null |
62692 | https://en.wikipedia.org/wiki/Archean | Archean | The Archean Eon ( , also spelled Archaean or Archæan), in older sources sometimes called the Archaeozoic, is the second of the four geologic eons of Earth's history, preceded by the Hadean Eon and followed by the Proterozoic. The Archean represents the time period from (million years ago). The Late Heavy Bombardment i... | Physical sciences | Geological timescale | Earth science |
62694 | https://en.wikipedia.org/wiki/Stromatolite | Stromatolite | Stromatolites ( ) or stromatoliths () are layered sedimentary formations (microbialite) that are created mainly by photosynthetic microorganisms such as cyanobacteria, sulfate-reducing bacteria, and Pseudomonadota (formerly proteobacteria). These microorganisms produce adhesive compounds that cement sand and other rock... | Biology and health sciences | Gram-negative bacteria | Plants |
62696 | https://en.wikipedia.org/wiki/Guinea%20pig | Guinea pig | The guinea pig or domestic guinea pig (Cavia porcellus), also known as the cavy or domestic cavy ( ), is a species of rodent belonging to the genus Cavia, family Caviidae. Breeders tend to use the name "cavy" for the animal, but "guinea pig" is more commonly used in scientific and laboratory contexts. Despite their nam... | Biology and health sciences | Rodents | null |
62784 | https://en.wikipedia.org/wiki/Soybean | Soybean | The soybean, soy bean, or soya bean (Glycine max) is a species of legume native to East Asia, widely grown for its edible bean, which has numerous uses.
Traditional unfermented food uses of soybeans include soy milk, from which tofu and tofu skin are made. Fermented soy foods include soy sauce, fermented bean paste, n... | Biology and health sciences | Food and drink | null |
62798 | https://en.wikipedia.org/wiki/Fabaceae | Fabaceae | The Fabaceae () or Leguminosae, commonly known as the legume, pea, or bean family, are a large and agriculturally important family of flowering plants. It includes trees, shrubs, and perennial or annual herbaceous plants, which are easily recognized by their fruit (legume) and their compound, stipulate leaves. The fami... | Biology and health sciences | Fabales | null |
62889 | https://en.wikipedia.org/wiki/Night%20monkey | Night monkey | Night monkeys, also known as owl monkeys or douroucoulis (), are nocturnal New World monkeys of the genus Aotus, the only member of the family Aotidae (). The genus comprises eleven species which are found across Panama and much of South America in primary and secondary forests, tropical rainforests and cloud forests u... | Biology and health sciences | New World monkeys | Animals |
62893 | https://en.wikipedia.org/wiki/Dingo | Dingo | The dingo (either included in the species Canis familiaris, or considered one of the following independent taxa: Canis familiaris dingo, Canis dingo, or Canis lupus dingo) is an ancient (basal) lineage of dog found in Australia. Its taxonomic classification is debated as indicated by the variety of scientific names pre... | Biology and health sciences | Carnivora | null |
62929 | https://en.wikipedia.org/wiki/Aqua%20regia | Aqua regia | Aqua regia (; from Latin, "regal water" or "royal water") is a mixture of nitric acid and hydrochloric acid, optimally in a molar ratio of 1:3. Aqua regia is a fuming liquid. Freshly prepared aqua regia is colorless, but it turns yellow, orange or red within seconds from the formation of nitrosyl chloride and nitrogen ... | Physical sciences | Specific acids | Chemistry |
62996 | https://en.wikipedia.org/wiki/Theophylline | Theophylline | Theophylline, also known as 1,3-dimethylxanthine, is a drug that inhibits phosphodiesterase and blocks adenosine receptors. It is used to treat chronic obstructive pulmonary disease (COPD) and asthma. Its pharmacology is similar to other methylxanthine drugs (e.g., theobromine and caffeine). Trace amounts of theophylli... | Physical sciences | Alkaloids | Chemistry |
63025 | https://en.wikipedia.org/wiki/Variable%20star | Variable star | A variable star is a star whose brightness as seen from Earth (its apparent magnitude) changes systematically with time. This variation may be caused by a change in emitted light or by something partly blocking the light, so variable stars are classified as either:
Intrinsic variables, whose luminosity actually change... | Physical sciences | Stellar astronomy | null |
63031 | https://en.wikipedia.org/wiki/Hound | Hound | A hound is a type of hunting dog used by hunters to track or chase prey.
Description
Hounds can be contrasted with gun dogs that assist hunters by identifying prey and/or recovering shot quarry. The hound breeds were the first hunting dogs. They have either a powerful sense of smell, great speed, or both. There are th... | Biology and health sciences | Dogs | null |
63034 | https://en.wikipedia.org/wiki/Strigidae | Strigidae | The true owls or typical owls (family Strigidae) are one of the two generally accepted families of owls, the other being the barn owls and bay owls (Tytonidae). This large family comprises 230 living or recently extinct species in 24 genera. The Strigidae owls have a cosmopolitan distribution and are found on every co... | Biology and health sciences | Strigiformes | Animals |
63087 | https://en.wikipedia.org/wiki/Siamese%20cat | Siamese cat | The Siamese cat (; แมวสยาม, Maeo Sayam) is one of the first distinctly recognised breeds of Asian cat. It derives from the Wichianmat landrace. The Siamese cat is one of several varieties of cats native to Thailand (known as Siam before 1939). The original Siamese became one of the most popular breeds in Europe and Nor... | Biology and health sciences | Cats | null |
63137 | https://en.wikipedia.org/wiki/Mass%20production | Mass production | Mass production, also known as flow production, series production, series manufacture, or continuous production, is the production of substantial amounts of standardized products in a constant flow, including and especially on assembly lines. Together with job production and batch production, it is one of the three mai... | Technology | Basics_6 | null |
63229 | https://en.wikipedia.org/wiki/Bee-eater | Bee-eater | The bee-eaters are a group of birds in the family Meropidae, containing three genera and thirty-one species. Most species are found in Africa and Asia, with a few in southern Europe, Australia, and New Guinea. They are characterised by richly coloured plumage, slender bodies, and usually elongated central tail feathers... | Biology and health sciences | Coraciiformes | Animals |
63258 | https://en.wikipedia.org/wiki/Cornish%20Rex | Cornish Rex | The Cornish Rex is a breed of domestic cat. The Cornish Rex only has down hair. Most breeds of cat have three different types of hair in their coats: the outer fur or "guard hairs", a middle layer called the "awn hair"; and the down hair or undercoat, which is very fine and about 1 cm long. Cornish Rexes only have the ... | Biology and health sciences | Cats | Animals |
63355 | https://en.wikipedia.org/wiki/Columbidae | Columbidae | Columbidae is a bird family consisting of doves and pigeons. It is the only family in the order Columbiformes. These are stout-bodied birds with short necks and short slender bills that in some species feature fleshy ceres. They feed largely on plant matter, feeding on seeds (granivory), fruit (frugivory), and foliage ... | Biology and health sciences | Columbiformes | null |
63522 | https://en.wikipedia.org/wiki/Crohn%27s%20disease | Crohn's disease | Crohn's disease is a chronic inflammatory bowel disease characterized by recurrent episodes of intestinal inflammation, primarily manifesting as diarrhea and abdominal pain. Unlike ulcerative colitis, inflammation can occur anywhere in the gastrointestinal tract, though it most frequently affects the ileum and colon, i... | Biology and health sciences | Specific diseases | Health |
63531 | https://en.wikipedia.org/wiki/Ulcerative%20colitis | Ulcerative colitis | Ulcerative colitis (UC) is one of the two types of inflammatory bowel disease (IBD), with the other type being Crohn's disease. It is a long-term condition that results in inflammation and ulcers of the colon and rectum. The primary symptoms of active disease are abdominal pain and diarrhea mixed with blood (hematochez... | Biology and health sciences | Specific diseases | Health |
63539 | https://en.wikipedia.org/wiki/Alanine | Alanine | Alanine (symbol Ala or A), or α-alanine, is an α-amino acid that is used in the biosynthesis of proteins. It contains an amine group and a carboxylic acid group, both attached to the central carbon atom which also carries a methyl group side chain. Consequently it is classified as a nonpolar, aliphatic α-amino acid. U... | Biology and health sciences | Amino acids | Biology |
63540 | https://en.wikipedia.org/wiki/Aspartic%20acid | Aspartic acid | Aspartic acid (symbol Asp or D; the ionic form is known as aspartate), is an α-amino acid that is used in the biosynthesis of proteins. The L-isomer of aspartic acid is one of the 22 proteinogenic amino acids, i.e., the building blocks of proteins.
D-aspartic acid is one of two D-amino acids commonly found in mammals.... | Biology and health sciences | Amino acids | Biology |
63541 | https://en.wikipedia.org/wiki/Glutamic%20acid | Glutamic acid | Glutamic acid (symbol Glu or E; the anionic form is known as glutamate) is an α-amino acid that is used by almost all living beings in the biosynthesis of proteins. It is a non-essential nutrient for humans, meaning that the human body can synthesize enough for its use. It is also the most abundant excitatory neurotran... | Biology and health sciences | Amino acids | Biology |
63542 | https://en.wikipedia.org/wiki/Histidine | Histidine | Histidine (symbol His or H) is an essential amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated –NH3+ form under biological conditions), a carboxylic acid group (which is in the deprotonated –COO− form under biological conditions), and an imidazole side chai... | Biology and health sciences | Amino acids | Biology |
63543 | https://en.wikipedia.org/wiki/Isoleucine | Isoleucine | Isoleucine (symbol Ile or I) is an α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated −NH form under biological conditions), an α-carboxylic acid group (which is in the deprotonated −COO− form under biological conditions), and a hydrocarbon side chain wit... | Biology and health sciences | Amino acids | Biology |
63544 | https://en.wikipedia.org/wiki/Lysine | Lysine | Lysine (symbol Lys or K) is an α-amino acid that is a precursor to many proteins. Lysine contains an α-amino group (which is in the protonated form when the lysine is dissolved in water at physiological pH), an α-carboxylic acid group (which is in the deprotonated form when the lysine is dissolved in water at physiol... | Biology and health sciences | Amino acids | Biology |
63546 | https://en.wikipedia.org/wiki/Leucine | Leucine | Leucine (symbol Leu or L) is an essential amino acid that is used in the biosynthesis of proteins. Leucine is an α-amino acid, meaning it contains an α-amino group (which is in the protonated −NH3+ form under biological conditions), an α-carboxylic acid group (which is in the deprotonated −COO− form under biological co... | Biology and health sciences | Amino acids | Biology |
63548 | https://en.wikipedia.org/wiki/Asparagine | Asparagine | Asparagine (symbol Asn or N) is an α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated −NH form under biological conditions), an α-carboxylic acid group (which is in the deprotonated −COO− form under biological conditions), and a side chain carboxamide, cl... | Biology and health sciences | Amino acids | Biology |
63549 | https://en.wikipedia.org/wiki/Glutamine | Glutamine | Glutamine (symbol Gln or Q) is an α-amino acid that is used in the biosynthesis of proteins. Its side chain is similar to that of glutamic acid, except the carboxylic acid group is replaced by an amide. It is classified as a charge-neutral, polar amino acid. It is non-essential and conditionally essential in humans, ... | Biology and health sciences | Amino acids | Biology |
63550 | https://en.wikipedia.org/wiki/Arginine | Arginine | Arginine is the amino acid with the formula (H2N)(HN)CN(H)(CH2)3CH(NH2)CO2H. The molecule features a guanidino group appended to a standard amino acid framework. At physiological pH, the carboxylic acid is deprotonated (−CO2−) and both the amino and guanidino groups are protonated, resulting in a cation. Only the -arg... | Biology and health sciences | Amino acids | Biology |
63551 | https://en.wikipedia.org/wiki/Serine | Serine | Serine (symbol Ser or S) is an α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated − form under biological conditions), a carboxyl group (which is in the deprotonated − form under biological conditions), and a side chain consisting of a hydroxymethyl group... | Biology and health sciences | Amino acids | Biology |
63553 | https://en.wikipedia.org/wiki/Threonine | Threonine | Threonine (symbol Thr or T) is an amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated −NH form when dissolved in water), a carboxyl group (which is in the deprotonated −COO− form when dissolved in water), and a side chain containing a hydroxyl group, making ... | Biology and health sciences | Amino acids | Biology |
63554 | https://en.wikipedia.org/wiki/Valine | Valine | Valine (symbol Val or V) is an α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated −NH3+ form under biological conditions), an α-carboxylic acid group (which is in the deprotonated −COO− form under biological conditions), and a side chain isopropyl group, ... | Biology and health sciences | Amino acids | Biology |
63564 | https://en.wikipedia.org/wiki/Hematology | Hematology | Hematology (spelled haematology in British English) is the branch of medicine concerned with the study of the cause, prognosis, treatment, and prevention of diseases related to blood. It involves treating diseases that affect the production of blood and its components, such as blood cells, hemoglobin, blood proteins, b... | Biology and health sciences | Fields of medicine | null |
63570 | https://en.wikipedia.org/wiki/Grouse | Grouse | Grouse are a group of birds from the order Galliformes, in the family Phasianidae. Grouse are presently assigned to the tribe Tetraonini (formerly the subfamily Tetraoninae and the family Tetraonidae), a classification supported by mitochondrial DNA sequence studies, and applied by the American Ornithologists' Union, ... | Biology and health sciences | Galliformes | null |
63572 | https://en.wikipedia.org/wiki/Old%20World%20sparrow | Old World sparrow | Old World sparrows are a group of small passerine birds forming the family Passeridae. They are also known as true sparrows, a name also used for a particular genus of the family, Passer. They are distinct from both the New World sparrows, in the family Passerellidae, and from a few other birds sharing their name, such... | Biology and health sciences | Passerida | null |
63577 | https://en.wikipedia.org/wiki/Cashew | Cashew | Cashew is the common name of a tropical evergreen tree Anacardium occidentale, in the family Anacardiaceae. It is native to South America and is the source of the cashew nut and the cashew apple, an accessory fruit. The tree can grow as tall as , but the dwarf cultivars, growing up to , prove more profitable, with earl... | Biology and health sciences | Sapindales | null |
63610 | https://en.wikipedia.org/wiki/Peafowl | Peafowl | Peafowl is a common name for two bird species of the genus Pavo and one species of the closely related genus Afropavo within the tribe Pavonini of the family Phasianidae (the pheasants and their allies). Male peafowl are referred to as peacocks, and female peafowl are referred to as peahens.
The two Asiatic species a... | Biology and health sciences | Galliformes | null |
63640 | https://en.wikipedia.org/wiki/Partridge | Partridge | A partridge is a medium-sized galliform bird in any of several genera, with a wide native distribution throughout parts of Europe, Asia and Africa. Several species have been introduced to the Americas. They are sometimes grouped in the Perdicinae subfamily of the Phasianidae (pheasants, quail, etc.). However, molecular... | Biology and health sciences | Galliformes | Animals |
63663 | https://en.wikipedia.org/wiki/Fly | Fly | Flies are insects of the order Diptera, the name being derived from the Greek δι- di- "two", and πτερόν pteron "wing". Insects of this order use only a single pair of wings to fly, the hindwings having evolved into advanced mechanosensory organs known as halteres, which act as high-speed sensors of rotational movement ... | Biology and health sciences | Flies (Diptera) | null |
63679 | https://en.wikipedia.org/wiki/Van | Van | A van is a type of road vehicle used for transporting goods or people. There is some variation in the scope of the word across the different English-speaking countries. The smallest vans, microvans, are used for transporting either goods or people in tiny quantities. Mini MPVs, compact MPVs, and MPVs are all small vans... | Technology | Road transport | null |
63704 | https://en.wikipedia.org/wiki/Carpal%20bones | Carpal bones | The carpal bones are the eight small bones that make up the wrist (carpus) that connects the hand to the forearm. The terms "carpus" and "carpal" are derived from the Latin carpus and the Greek καρπός (karpós), meaning "wrist". In human anatomy, the main role of the carpal bones is to articulate with the radial and uln... | Biology and health sciences | Skeletal system | Biology |
63764 | https://en.wikipedia.org/wiki/Dysentery | Dysentery | {{Infobox medical condition (new)
| name = Dysentery
| synonyms = Bloody diarrhea
| image = Dysentery Patient, Burma Hospital, Siam Art.IWMART1541787.jpg
| caption = A person with dysentery in a Burmese POW camp, 1943
| field = Infectious disease
| symptoms = Bloody diarrhea, abdominal pain, fever
| complications = Deh... | Biology and health sciences | Infectious disease | null |
63780 | https://en.wikipedia.org/wiki/Sporangium | Sporangium | A sporangium (from Late Latin, ); : sporangia) is an enclosure in which spores are formed. It can be composed of a single cell or can be multicellular. Virtually all plants, fungi, and many other groups form sporangia at some point in their life cycle. Sporangia can produce spores by mitosis, but in land plants and man... | Biology and health sciences | Fungal morphology and anatomy | Biology |
63791 | https://en.wikipedia.org/wiki/Peptic%20ulcer%20disease | Peptic ulcer disease | Peptic ulcer disease is when the inner part of the stomach's gastric mucosa (lining of the stomach), the first part of the small intestine, or sometimes the lower esophagus, gets damaged. An ulcer in the stomach is called a gastric ulcer, while one in the first part of the intestines is a duodenal ulcer. The most commo... | Biology and health sciences | Specific diseases | Health |
63793 | https://en.wikipedia.org/wiki/Meteoroid | Meteoroid | A meteoroid ( ) is a small rocky or metallic body in outer space.
Meteoroids are distinguished as objects significantly smaller than asteroids, ranging in size from grains to objects up to a meter wide. Objects smaller than meteoroids are classified as micrometeoroids or space dust. Many are fragments from comets or as... | Physical sciences | Planetary science | null |
63794 | https://en.wikipedia.org/wiki/Impact%20event | Impact event | An impact event is a collision between astronomical objects causing measurable effects. Impact events have been found to regularly occur in planetary systems, though the most frequent involve asteroids, comets or meteoroids and have minimal effect. When large objects impact terrestrial planets such as the Earth, there ... | Physical sciences | Planetary science | null |
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