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1156873 | https://en.wikipedia.org/wiki/Volatile%20memory | Volatile memory | Volatile memory, in contrast to non-volatile memory, is computer memory that requires power to maintain the stored information; it retains its contents while powered on but when the power is interrupted, the stored data is quickly lost.
Volatile memory has several uses including as primary storage. In addition to usua... | Technology | Volatile memory | null |
1156934 | https://en.wikipedia.org/wiki/Ammonium%20carbonate | Ammonium carbonate | Ammonium carbonate is a chemical compound with the chemical formula . It is an ammonium salt of carbonic acid. It is composed of ammonium cations and carbonate anions . Since ammonium carbonate readily degrades to gaseous ammonia and carbon dioxide upon heating, it is used as a leavening agent and also as smelling sal... | Physical sciences | Carbonic oxyanions | Chemistry |
1156993 | https://en.wikipedia.org/wiki/Rolling | Rolling | Rolling is a type of motion that combines rotation (commonly, of an axially symmetric object) and translation of that object with respect to a surface (either one or the other moves), such that, if ideal conditions exist, the two are in contact with each other without sliding.
Rolling where there is no sliding is refe... | Physical sciences | Classical mechanics | Physics |
11551222 | https://en.wikipedia.org/wiki/Heat%20pump%20and%20refrigeration%20cycle | Heat pump and refrigeration cycle | Thermodynamic heat pump cycles or refrigeration cycles are the conceptual and mathematical models for heat pump, air conditioning and refrigeration systems. A heat pump is a mechanical system that transmits heat from one location (the "source") at a certain temperature to another location (the "sink" or "heat sink") at... | Physical sciences | Thermodynamics | Physics |
10115658 | https://en.wikipedia.org/wiki/Molecular%20self-assembly | Molecular self-assembly | In chemistry and materials science, molecular self-assembly is the process by which molecules adopt a defined arrangement without guidance or management from an outside source. There are two types of self-assembly: intermolecular and intramolecular. Commonly, the term molecular self-assembly refers to the former, while... | Physical sciences | Supramolecular chemistry | Chemistry |
19178886 | https://en.wikipedia.org/wiki/Protist | Protist | A protist ( ) or protoctist is any eukaryotic organism that is not an animal, land plant, or fungus. Protists do not form a natural group, or clade, but are a polyphyletic grouping of several independent clades that evolved from the last eukaryotic common ancestor.
Protists were historically regarded as a separate tax... | Biology and health sciences | Other organisms | null |
19178965 | https://en.wikipedia.org/wiki/Fungus | Fungus | A fungus (: fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as one of the traditional eukaryotic kingdoms, along with Animalia, Plantae, and either Protista or Protozoa and... | Biology and health sciences | Biology | null |
19179023 | https://en.wikipedia.org/wiki/Protozoa | Protozoa | Protozoa (: protozoan or protozoon; alternative plural: protozoans) are a polyphyletic group of single-celled eukaryotes, either free-living or parasitic, that feed on organic matter such as other microorganisms or organic debris. Historically, protozoans were regarded as "one-celled animals".
When first introduced by... | Biology and health sciences | Eukaryotes | Plants |
19179592 | https://en.wikipedia.org/wiki/Archaea | Archaea | Archaea ( ) is a domain of organisms. Traditionally, Archaea only included its prokaryotic members, but this since has been found to be paraphyletic, as eukaryotes are now known to have evolved from archaea. Even though the domain Archaea includes eukaryotes, the term "archaea" (: archaeon , from the Greek "ἀρχαῖον", ... | Biology and health sciences | Biology | null |
19179706 | https://en.wikipedia.org/wiki/Abiogenesis | Abiogenesis | Abiogenesis is the natural process by which life arises from non-living matter, such as simple organic compounds. The prevailing scientific hypothesis is that the transition from non-living to living entities on Earth was not a single event, but a process of increasing complexity involving the formation of a habitable ... | Biology and health sciences | Biology | null |
19180096 | https://en.wikipedia.org/wiki/Worm | Worm | Worms are many different distantly related bilateral animals that typically have a long cylindrical tube-like body, no limbs, and usually no eyes.
Worms vary in size from microscopic to over in length for marine polychaete worms (bristle worms); for the African giant earthworm, Microchaetus rappi; and for the mari... | Biology and health sciences | General classifications | Animals |
219544 | https://en.wikipedia.org/wiki/Junk%20%28ship%29 | Junk (ship) | A junk () is a type of Chinese sailing ship characterized by a central rudder, an overhanging flat transom, watertight bulkheads, and a flat-bottomed design. They are also characteristically built using iron nails and clamps. The term applies to many types of small coastal or river ships, usually serving as cargo ships... | Technology | Naval transport | null |
219545 | https://en.wikipedia.org/wiki/Rapeseed | Rapeseed | Rapeseed (Brassica napus subsp. napus), also known as rape and oilseed rape, is a bright-yellow flowering member of the family Brassicaceae (mustard or cabbage family), cultivated mainly for its oil-rich seed, which naturally contains appreciable amounts of mildly toxic erucic acid. The term "canola" denotes a group of... | Biology and health sciences | Brassicales | null |
219640 | https://en.wikipedia.org/wiki/Animal%20husbandry | Animal husbandry | Animal husbandry is the branch of agriculture concerned with animals that are raised for meat, fibre, milk, or other products. It includes day-to-day care, management, production, nutrition, selective breeding, and the raising of livestock. Husbandry has a long history, starting with the Neolithic Revolution when anima... | Technology | Food and health | null |
219664 | https://en.wikipedia.org/wiki/Titania%20%28moon%29 | Titania (moon) | Titania (), also designated Uranus III, is the largest moon of Uranus. At a diameter of it is the eighth largest moon in the Solar System, with a surface area comparable to that of Australia. Discovered by William Herschel in 1787, it is named after the queen of the fairies in Shakespeare's A Midsummer Night's Dream. ... | Physical sciences | Solar System | Astronomy |
219713 | https://en.wikipedia.org/wiki/Titanium%20dioxide | Titanium dioxide | Titanium dioxide, also known as titanium(IV) oxide or titania , is the inorganic compound derived from titanium with the chemical formula . When used as a pigment, it is called titanium white, Pigment White 6 (PW6), or CI 77891. It is a white solid that is insoluble in water, although mineral forms can appear black. As... | Physical sciences | Inorganic compounds | null |
219741 | https://en.wikipedia.org/wiki/Tit%20%28bird%29 | Tit (bird) | The tits, chickadees, and titmice constitute the Paridae, a large family of small passerine birds which occur mainly in the Northern Hemisphere and Africa. Most were formerly classified in the genus Parus.
Eurasian and African members of this family are referred to as "tits", while North American species are called ei... | Biology and health sciences | Passerida | null |
219810 | https://en.wikipedia.org/wiki/Bow%20and%20arrow | Bow and arrow | The bow and arrow is a ranged weapon system consisting of an elastic launching device (bow) and long-shafted projectiles (arrows). Humans used bows and arrows for hunting and aggression long before recorded history, and the practice was common to many prehistoric cultures. They were important weapons of war from ancien... | Technology | Projectile weapons | null |
219826 | https://en.wikipedia.org/wiki/Bacillota | Bacillota | Bacillota (synonym Firmicutes) is a phylum of bacteria, most of which have gram-positive cell wall structure. The renaming of phyla such as Firmicutes in 2021 remains controversial among microbiologists, many of whom continue to use the earlier names of long standing in the literature.
The name "Firmicutes" was derive... | Biology and health sciences | Gram-positive bacteria | Plants |
219831 | https://en.wikipedia.org/wiki/Neisseria | Neisseria | Neisseria is a large genus of bacteria that colonize the mucosal surfaces of many animals. Of the 11 species that colonize humans, only two are pathogens, N. meningitidis and N. gonorrhoeae.
Neisseria species are Gram-negative bacteria included among the Pseudomonadota, a large group of Gram-negative forms. Neisseria... | Biology and health sciences | Gram-negative bacteria | Plants |
219865 | https://en.wikipedia.org/wiki/Actinomycetota | Actinomycetota | The Actinomycetota (or Actinobacteria) are a diverse phylum of Gram-positive bacteria with high GC content. They can be terrestrial or aquatic. They are of great importance to land flora because of their contributions to soil systems. In soil they help to decompose the organic matter of dead organisms so the molecules ... | Biology and health sciences | Gram-positive bacteria | Plants |
219939 | https://en.wikipedia.org/wiki/Mycoplasma | Mycoplasma | Mycoplasma is a genus of bacteria that, like the other members of the class Mollicutes, lack a cell wall, and its peptidoglycan, around their cell membrane. The absence of peptidoglycan makes them naturally resistant to antibiotics such as the beta-lactam antibiotics that target cell wall synthesis. They can be parasit... | Biology and health sciences | Gram-positive bacteria | Plants |
219940 | https://en.wikipedia.org/wiki/Vibrio | Vibrio | Vibrio is a genus of Gram-negative bacteria, possessing a curved-rod (comma) shape, several species of which can cause foodborne infection or soft-tissue infection called Vibriosis. Infection is commonly associated with eating undercooked seafood. Being highly salt tolerant and unable to survive in freshwater, Vibrio s... | Biology and health sciences | Gram-negative bacteria | Plants |
220009 | https://en.wikipedia.org/wiki/Bittern | Bittern | Bitterns are birds belonging to the subfamily Botaurinae of the heron family Ardeidae. Bitterns tend to be shorter-necked and more secretive than other members of the family. They were called hæferblæte and various iterations of raredumla in Old English; the word "bittern" came to English from Old French butor, itself ... | Biology and health sciences | Pelecanimorphae | Animals |
220118 | https://en.wikipedia.org/wiki/Railroad%20car | Railroad car | A railroad car, railcar (American and Canadian English), railway wagon, railway carriage, railway truck, railwagon, railcarriage or railtruck (British English and UIC), also called a train car, train wagon, train carriage or train truck, is a vehicle used for the carrying of cargo or passengers on a rail transport net... | Technology | Rail and cable transport | null |
220200 | https://en.wikipedia.org/wiki/Oystercatcher | Oystercatcher | The oystercatchers are a group of waders forming the family Haematopodidae, which has a single genus, Haematopus. They are found on coasts worldwide apart from the polar regions and some tropical regions of Africa and South East Asia. The exceptions to this are the Eurasian oystercatcher, the South Island oystercatcher... | Biology and health sciences | Charadriiformes | Animals |
220241 | https://en.wikipedia.org/wiki/Pratincole | Pratincole | The pratincoles or greywaders are a subfamily (Glareolinae) of birds which together with the coursers make up the family Glareolidae. They have short legs, very long pointed wings and long forked tails.
Description
Their most unusual feature for birds classed as waders is that they typically hunt their insect prey on ... | Biology and health sciences | Charadriiformes | Animals |
220243 | https://en.wikipedia.org/wiki/Courser | Courser | The coursers are a subfamily (Cursoriinae) of birds which together with the pratincoles make up the family Glareolidae. They have long legs, short wings and long pointed bills which curve downwards. Their most unusual feature for birds classed as waders is that they inhabit deserts and similar arid regions.
They have... | Biology and health sciences | Charadriiformes | Animals |
220432 | https://en.wikipedia.org/wiki/Xylitol | Xylitol | Xylitol is a chemical compound with the formula , or HO(CH2)(CHOH)3(CH2)OH; specifically, one particular stereoisomer with that structural formula. It is a colorless or white crystalline solid. It is classified as a polyalcohol and a sugar alcohol, specifically an alditol. Of the common sugar alcohols, only sorbitol ... | Physical sciences | Sugar alcohols | Chemistry |
220443 | https://en.wikipedia.org/wiki/Choanoflagellate | Choanoflagellate | Choanoflagellates are a group of free-living unicellular and colonial flagellate eukaryotes considered to be the closest living relatives of animals. The name refers to the characteristic funnel-shaped "collar" of interconnected microvilli and the presence of a flagellum. Choanoflagellates are found globally in aquatic... | Biology and health sciences | Eukaryotes | Plants |
220444 | https://en.wikipedia.org/wiki/Morchella | Morchella | Morchella, the true morels, is a genus of edible sac fungi closely related to anatomically simpler cup fungi in the order Pezizales (division Ascomycota). These distinctive fungi have a honeycomb appearance due to the network of ridges with pits composing their caps. Morels are prized by gourmet cooks, particularly in ... | Biology and health sciences | Edible fungi | Plants |
220446 | https://en.wikipedia.org/wiki/Ascus | Ascus | An ascus (; : asci) is the sexual spore-bearing cell produced in ascomycete fungi. Each ascus usually contains eight ascospores (or octad), produced by meiosis followed, in most species, by a mitotic cell division. However, asci in some genera or species can occur in numbers of one (e.g. Monosporascus cannonballus), tw... | Biology and health sciences | Fungal morphology and anatomy | Biology |
220457 | https://en.wikipedia.org/wiki/Cycad | Cycad | Cycads are seed plants that typically have a stout and woody (ligneous) trunk with a crown of large, hard, stiff, evergreen and (usually) pinnate leaves. The species are dioecious, that is, individual plants of a species are either male or female. Cycads vary in size from having trunks only a few centimeters to severa... | Biology and health sciences | Gymnosperms | null |
220704 | https://en.wikipedia.org/wiki/Avocet | Avocet | The four species of avocets are a genus, Recurvirostra, of waders in the same avian family as the stilts. The genus name comes from Latin , 'curved backwards' and , 'bill'. The common name is thought to derive from the Italian (Ferrarese) word . Francis Willughby in 1678 noted it as the "Avosetta of the Italians".
Bi... | Biology and health sciences | Charadriiformes | Animals |
220705 | https://en.wikipedia.org/wiki/Stilt | Stilt | Stilt is a common name for several species of birds in the family Recurvirostridae, which also includes those known as avocets. They are found in brackish or saline wetlands in warm or hot climates.
They have extremely long legs, hence the group name, and long thin bills. Stilts typically feed on aquatic insects and o... | Biology and health sciences | Charadriiformes | Animals |
220776 | https://en.wikipedia.org/wiki/Sturgeon | Sturgeon | {{Automatic taxobox
| name = Sturgeon
| image = Acipenser oxyrhynchus (edit).png
| image_caption = Atlantic sturgeon(Acipenser oxyrinchus oxyrinchus)
| fossil_range =
| taxon = Acipenseridae
| authority = Bonaparte, 1831
| subdivision_ranks = Genera
| subdivision =
†Boreiosturion
†Protoscaphirhynchus
†Engdahlichthys
... | Biology and health sciences | Chondrosteans | null |
220825 | https://en.wikipedia.org/wiki/Freezing%20rain | Freezing rain | Freezing rain is rain maintained at temperatures below freezing by the ambient air mass that causes freezing on contact with surfaces. Unlike a mixture of rain and snow or ice pellets, freezing rain is made entirely of liquid droplets. The raindrops become supercooled while passing through a sub-freezing layer of air ... | Physical sciences | Precipitation | Earth science |
221047 | https://en.wikipedia.org/wiki/Flow%20measurement | Flow measurement | Flow measurement is the quantification of bulk fluid movement. Flow can be measured using devices called flowmeters in various ways. The common types of flowmeters with industrial applications are listed below:
Obstruction type (differential pressure or variable area)
Inferential (turbine type)
Electromagnetic
Po... | Physical sciences | Fluid mechanics | Physics |
221081 | https://en.wikipedia.org/wiki/Hand%20%28unit%29 | Hand (unit) | The hand is a non-SI unit of measurement of length standardized to . It is used to measure the height of horses in many English-speaking countries, including Australia, Canada, Ireland, the United Kingdom, and the United States. It was originally based on the breadth of a human hand. The adoption of the international ... | Physical sciences | English | Basics and measurement |
221151 | https://en.wikipedia.org/wiki/Bengal%20tiger | Bengal tiger | The Bengal tiger or Royal Bengal tiger is a population of the Panthera tigris tigris subspecies and the nominate tiger subspecies. It ranks among the biggest wild cats alive today. It is estimated to have been present in the Indian subcontinent since the Late Pleistocene for about 12,000 to 16,500 years. Its historical... | Biology and health sciences | Felines | Animals |
221198 | https://en.wikipedia.org/wiki/Clamp%20%28tool%29 | Clamp (tool) | A clamp is a fastening device used to hold or secure objects tightly together to prevent movement or separation through the application of inward pressure. In the United Kingdom the term cramp is often used instead when the tool is for temporary use for positioning components during construction and woodworking; thus a... | Technology | Hand tools | null |
221244 | https://en.wikipedia.org/wiki/Bellman%E2%80%93Ford%20algorithm | Bellman–Ford algorithm | The Bellman–Ford algorithm is an algorithm that computes shortest paths from a single source vertex to all of the other vertices in a weighted digraph.
It is slower than Dijkstra's algorithm for the same problem, but more versatile, as it is capable of handling graphs in which some of the edge weights are negative numb... | Mathematics | Graph theory | null |
221381 | https://en.wikipedia.org/wiki/Araucariaceae | Araucariaceae | Araucariaceae is a family of conifers with three living genera, Araucaria, Agathis, and Wollemia. While the family's native distribution is now largely confined to the Southern Hemisphere, except for a few species of Agathis in Malesia, it was formerly widespread in the Northern Hemisphere during the Jurassic and Creta... | Biology and health sciences | Pinophyta (Conifers) | Plants |
221399 | https://en.wikipedia.org/wiki/Buttonquail | Buttonquail | Buttonquail or hemipodes are members of a small family of birds, Turnicidae, which resemble, but are not closely related to, the quails of Phasianidae. They inhabit warm grasslands in Asia, Africa, Europe, and Australia. There are 18 species in two genera, with most species placed in the genus Turnix and a single speci... | Biology and health sciences | Charadriiformes | Animals |
221430 | https://en.wikipedia.org/wiki/Bearing%20%28mechanical%29 | Bearing (mechanical) | A bearing is a machine element that constrains relative motion to only the desired motion and reduces friction between moving parts. The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may prevent a motion by controlling the ve... | Technology | Components_2 | null |
221519 | https://en.wikipedia.org/wiki/Differential%20form | Differential form | In mathematics, differential forms provide a unified approach to define integrands over curves, surfaces, solids, and higher-dimensional manifolds. The modern notion of differential forms was pioneered by Élie Cartan. It has many applications, especially in geometry, topology and physics.
For instance, the expressio... | Mathematics | Multivariable and vector calculus | null |
221536 | https://en.wikipedia.org/wiki/Right-hand%20rule | Right-hand rule | In mathematics and physics, the right-hand rule is a convention and a mnemonic, utilized to define the orientation of axes in three-dimensional space and to determine the direction of the cross product of two vectors, as well as to establish the direction of the force on a current-carrying conductor in a magnetic field... | Physical sciences | Electrodynamics | Physics |
221537 | https://en.wikipedia.org/wiki/Exterior%20algebra | Exterior algebra | In mathematics, the exterior algebra or Grassmann algebra of a vector space is an associative algebra that contains which has a product, called exterior product or wedge product and denoted with , such that for every vector in The exterior algebra is named after Hermann Grassmann, and the names of the product come... | Mathematics | Other algebra topics | null |
221636 | https://en.wikipedia.org/wiki/Marsupial%20mole | Marsupial mole | Marsupial moles, the Notoryctidae family, are two species of highly specialized marsupial mammals that are found in the Australian interior.
They are small burrowing marsupials that anatomically converge on fossorial placental mammals, such as extant golden moles (Chrysochloridae) and extinct epoicotheres (Pholidota)... | Biology and health sciences | Marsupials | Animals |
221839 | https://en.wikipedia.org/wiki/Stalagmite | Stalagmite | A stalagmite (, ; ; )
is a type of rock formation that rises from the floor of a cave due to the accumulation of material deposited on the floor from ceiling drippings. Stalagmites are typically composed of calcium carbonate, but may consist of lava, mud, peat, pitch, sand, sinter, and amberat (crystallized urine of pa... | Physical sciences | Caves | Earth science |
221847 | https://en.wikipedia.org/wiki/Kinglet | Kinglet | A kinglet is a small bird in the family Regulidae. Species in this family were formerly classified with the Old World warblers. "Regulidae" is derived from the Latin word regulus for "petty king" or prince, and refers to the coloured crowns of adult birds. This family has representatives in North America and Eurasia. T... | Biology and health sciences | Passerida | Animals |
221923 | https://en.wikipedia.org/wiki/Starling | Starling | Starlings are small to medium-sized passerine birds in the family Sturnidae, common name of Sturnid. The Sturnidae are named for the genus Sturnus, which in turn comes from the Latin word for starling, sturnus. The family contains 128 species which are divided into 36 genera. Many Asian species, particularly the larger... | Biology and health sciences | Passerida | null |
221926 | https://en.wikipedia.org/wiki/Myna | Myna | The mynas (; also spelled mynah) are a group of birds in the starling family (Sturnidae). This is a group of passerine birds which are native to Iran and Southern Asia, especially Afghanistan, India, Pakistan, Bangladesh, Nepal and Sri Lanka. Several species have been introduced to areas like North America, Australia, ... | Biology and health sciences | Passerida | Animals |
221931 | https://en.wikipedia.org/wiki/Oxpecker | Oxpecker | The oxpeckers are two species of bird which make up the genus Buphagus, and family Buphagidae. The oxpeckers were formerly usually treated as a subfamily, Buphaginae, within the starling family, Sturnidae, but molecular phylogenetic studies have consistently shown that they form a separate lineage that is basal to the ... | Biology and health sciences | Passerida | Animals |
221932 | https://en.wikipedia.org/wiki/Pasture | Pasture | Pasture (from the Latin pastus, past participle of pascere, "to feed") is land used for grazing.
Types of pasture
Pasture lands in the narrow sense are enclosed tracts of farmland, grazed by domesticated livestock, such as horses, cattle, sheep, or swine. The vegetation of tended pasture, forage, consists mainly of g... | Technology | Basics_2 | null |
221998 | https://en.wikipedia.org/wiki/Thiomersal | Thiomersal | Thiomersal (INN), or thimerosal (USAN, JAN), also sold under the name merthiolate is an organomercury compound. It is a well-established antiseptic and antifungal agent.
The pharmaceutical corporation Eli Lilly and Company named it Merthiolate. It has been used as a preservative in vaccines, immunoglobulin preparation... | Physical sciences | Organic salts | Chemistry |
222142 | https://en.wikipedia.org/wiki/Panthalassa | Panthalassa | Panthalassa, also known as the Panthalassic Ocean or Panthalassan Ocean (from Greek "all" and "sea"), was the vast superocean that encompassed planet Earth and surrounded the supercontinent Pangaea, the latest in a series of supercontinents in the history of Earth. During the Paleozoic–Mesozoic transition ( 250 ), th... | Physical sciences | Paleogeography | Earth science |
222154 | https://en.wikipedia.org/wiki/Blastulation | Blastulation | Blastulation is the stage in early animal embryonic development that produces the blastula. In mammalian development, the blastula develops into the blastocyst with a differentiated inner cell mass and an outer trophectoderm. The blastula (from Greek βλαστός ( meaning sprout)) is a hollow sphere of cells known as blast... | Biology and health sciences | Animal reproduction | Biology |
222177 | https://en.wikipedia.org/wiki/Gastrulation | Gastrulation | Gastrulation is the stage in the early embryonic development of most animals, during which the blastula (a single-layered hollow sphere of cells), or in mammals the blastocyst, is reorganized into a two-layered or three-layered embryo known as the gastrula. Before gastrulation, the embryo is a continuous epithelial she... | Biology and health sciences | Animal reproduction | Biology |
222183 | https://en.wikipedia.org/wiki/Secretin | Secretin | Secretin is a hormone that regulates water homeostasis throughout the body and influences the environment of the duodenum by regulating secretions in the stomach, pancreas, and liver. It is a peptide hormone produced in the S cells of the duodenum, which are located in the intestinal glands. In humans, the secretin pep... | Biology and health sciences | Animal hormones | Biology |
222299 | https://en.wikipedia.org/wiki/Vasopressin | Vasopressin | Human vasopressin, also called antidiuretic hormone (ADH), arginine vasopressin (AVP) or argipressin, is a hormone synthesized from the AVP gene as a peptide prohormone in neurons in the hypothalamus, and is converted to AVP. It then travels down the axon terminating in the posterior pituitary, and is released from v... | Biology and health sciences | Animal hormones | Biology |
222300 | https://en.wikipedia.org/wiki/Oxytocin | Oxytocin | Oxytocin is a peptide hormone and neuropeptide normally produced in the hypothalamus and released by the posterior pituitary. Present in animals since early stages of evolution, in humans it plays roles in behavior that include social bonding, love, reproduction, childbirth, and the period after childbirth. Oxytocin is... | Biology and health sciences | Biochemistry and molecular biology | null |
222324 | https://en.wikipedia.org/wiki/Archegonium | Archegonium | An archegonium (: archegonia), from the Ancient Greek ἀρχή ("beginning") and γόνος ("offspring"), is a multicellular structure or organ of the gametophyte phase of certain plants, producing and containing the ovum or female gamete. The corresponding male organ is called the antheridium. The archegonium has a long neck ... | Biology and health sciences | Plant reproduction | Biology |
222367 | https://en.wikipedia.org/wiki/Multivalued%20function | Multivalued function | In mathematics, a multivalued function, multiple-valued function, many-valued function, or multifunction, is a function that has two or more values in its range for at least one point in its domain. It is a set-valued function with additional properties depending on context; some authors do not distinguish between set-... | Mathematics | Functions: General | null |
222412 | https://en.wikipedia.org/wiki/Numbat | Numbat | The numbat (Myrmecobius fasciatus), also known as the noombat or walpurti, is an insectivorous marsupial. It is diurnal and its diet consists almost exclusively of termites.
The species was once widespread across southern Australia, but is now restricted to several small colonies in Western Australia. It is therefore ... | Biology and health sciences | Marsupials | Animals |
222422 | https://en.wikipedia.org/wiki/Dasyuromorphia | Dasyuromorphia | Dasyuromorphia (, meaning "hairy tail" in Greek) is an order comprising most of the Australian carnivorous marsupials, including quolls, dunnarts, the numbat, the Tasmanian devil, and the extinct thylacine. In Australia, the exceptions include the omnivorous bandicoots (order Peramelemorphia) and the marsupial moles (... | Biology and health sciences | Marsupials | null |
1757261 | https://en.wikipedia.org/wiki/Gouldian%20finch | Gouldian finch | The Gouldian finch (Chloebia gouldiae), also known as the Gould's finch or the rainbow finch, is a colourful passerine bird that is native to Australia.
Taxonomy
The Gouldian finch was described by British ornithologist John Gould in 1844 as Amadina gouldiae, in honour of his deceased wife Elizabeth. Specimens of the ... | Biology and health sciences | Passerida | Animals |
2441752 | https://en.wikipedia.org/wiki/Arsenate%20mineral | Arsenate mineral | Arsenate minerals usually refer to the naturally occurring orthoarsenates, possessing the (AsO4)3− anion group and, more rarely, other arsenates with anions like AsO3(OH)2− (also written HAsO42−) (example: pharmacolite Ca(AsO3OH).2H2O) or (very rarely) [AsO2(OH)2]− (example: andyrobertsite). Arsenite minerals are much ... | Physical sciences | Minerals | Earth science |
2442882 | https://en.wikipedia.org/wiki/Soil%20physics | Soil physics | Soil physics is the study of soil's physical properties and processes. It is applied to management and prediction under natural and managed ecosystems. Soil physics deals with the dynamics of physical soil components and their phases as solids, liquids, and gases. It draws on the principles of physics, physical chemi... | Physical sciences | Soil science | Earth science |
2443027 | https://en.wikipedia.org/wiki/Supernova%20nucleosynthesis | Supernova nucleosynthesis | Supernova nucleosynthesis is the nucleosynthesis of chemical elements in supernova explosions.
In sufficiently massive stars, the nucleosynthesis by fusion of lighter elements into heavier ones occurs during sequential hydrostatic burning processes called helium burning, carbon burning, oxygen burning, and silicon bur... | Physical sciences | Stellar astronomy | Astronomy |
16969883 | https://en.wikipedia.org/wiki/Cementation%20%28geology%29 | Cementation (geology) | Minerals bond grains of sediment together by growing around them. This process is called cementation and is a part of the rock cycle.
Cementation involves ions carried in groundwater chemically precipitating to form new crystalline material between sedimentary grains. The new pore-filling minerals form "bridges" betw... | Physical sciences | Sedimentology | Earth science |
4524914 | https://en.wikipedia.org/wiki/Lantian%20Man | Lantian Man | Lantian Man (), Homo erectus lantianensis) is a subspecies of Homo erectus known from an almost complete mandible from Chenchiawo (陈家窝) Village discovered in 1963, and a partial skull from Gongwangling (公王岭) Village discovered in 1964, situated in Lantian County on the Loess Plateau. The former dates to about 710–684 t... | Biology and health sciences | Homo | Biology |
4528497 | https://en.wikipedia.org/wiki/Yuanmou%20Man | Yuanmou Man | Yuanmou Man (, Homo erectus yuanmouensis) is a subspecies of H. erectus which inhabited the Yuanmou Basin in Yunnan Province, southwestern China, roughly 1.7 million years ago. It is the first fossil evidence of humans in China, though they probably reached the region by at least 2 million years ago. Yuanmou Man is kno... | Biology and health sciences | Homo | Biology |
4529793 | https://en.wikipedia.org/wiki/Inostrancevia | Inostrancevia | Inostrancevia is an extinct genus of large carnivorous therapsids which lived during the Late Permian in what is now European Russia and Southern Africa. The first-known fossils of this gorgonopsian were discovered in the context of a long series of excavations carried out from 1899 to 1914 in the Northern Dvina, Russi... | Biology and health sciences | Proto-mammals | Animals |
7842592 | https://en.wikipedia.org/wiki/Kugelblitz%20%28astrophysics%29 | Kugelblitz (astrophysics) | A kugelblitz () is a theoretical astrophysical object predicted by general relativity. It is a concentration of heat, light or radiation so intense that its energy forms an event horizon and becomes self-trapped. In other words, if enough radiation is aimed into a region of space, the concentration of energy can warp s... | Physical sciences | Basics_2 | Astronomy |
7847673 | https://en.wikipedia.org/wiki/Developmental%20coordination%20disorder | Developmental coordination disorder | Developmental coordination disorder (DCD), also known as developmental motor coordination disorder, developmental dyspraxia, or simply dyspraxia (from Ancient Greek praxis 'activity'), is a neurodevelopmental disorder characterized by impaired coordination of physical movements as a result of brain messages not being a... | Biology and health sciences | Disabilities | Health |
417903 | https://en.wikipedia.org/wiki/Orthonectida | Orthonectida | Orthonectida () is a small phylum of poorly known parasites of marine invertebrates that are among the simplest of multi-cellular organisms. Members of this phylum are known as orthonectids.
Biology
The adults, which are the sexual stage, are microscopic wormlike animals, consisting of a single layer of ciliated outer... | Biology and health sciences | Spiralia | Animals |
417929 | https://en.wikipedia.org/wiki/LASIK | LASIK | LASIK or Lasik (; "laser-assisted in situ keratomileusis"), commonly referred to as laser eye surgery or laser vision correction, is a type of refractive surgery for the correction of myopia, hyperopia, and astigmatism. LASIK surgery is performed by an ophthalmologist who uses a femtosecond laser or a microkeratome to ... | Biology and health sciences | Surgery | Health |
418101 | https://en.wikipedia.org/wiki/Evolutionary%20biology | Evolutionary biology | Evolutionary biology is the subfield of biology that studies the evolutionary processes such as natural selection, common descent, and speciation that produced the diversity of life on Earth. In the 1930s, the discipline of evolutionary biology emerged through what Julian Huxley called the modern synthesis of understan... | Biology and health sciences | Basics_4 | Biology |
418403 | https://en.wikipedia.org/wiki/Volumetric%20flow%20rate | Volumetric flow rate | In physics and engineering, in particular fluid dynamics, the volumetric flow rate (also known as volume flow rate, or volume velocity) is the volume of fluid which passes per unit time; usually it is represented by the symbol (sometimes ). It contrasts with mass flow rate, which is the other main type of fluid flow r... | Physical sciences | Fluid mechanics | Physics |
418509 | https://en.wikipedia.org/wiki/Mullet%20%28fish%29 | Mullet (fish) | The mullets or grey mullets are a family (Mugilidae) of ray-finned fish found worldwide in coastal temperate and tropical waters, and some species in fresh water. Mullets have served as an important source of food in Mediterranean Europe since Roman times. The family includes about 78 species in 26 genera.
Mullets are... | Biology and health sciences | Fishes | null |
418809 | https://en.wikipedia.org/wiki/Base%20metal | Base metal | A base metal is a common and inexpensive metal, as opposed to a precious metal such as gold or silver. In numismatics, coins often derived their value from the precious metal content; however, base metals have also been used in coins in the past and today.
Specific definitions
In contrast to noble metals, base metal... | Physical sciences | d-Block | Chemistry |
419094 | https://en.wikipedia.org/wiki/Adipose%20tissue | Adipose tissue | Adipose tissue (also known as body fat or simply fat) is a loose connective tissue composed mostly of adipocytes. It also contains the stromal vascular fraction (SVF) of cells including preadipocytes, fibroblasts, vascular endothelial cells and a variety of immune cells such as adipose tissue macrophages. Its main ... | Biology and health sciences | Tissues | Biology |
419100 | https://en.wikipedia.org/wiki/Organ%20system | Organ system | An organ system is a biological system consisting of a group of organs that work together to perform one or more functions. Each organ has a specialized role in an organism body, and is made up of distinct tissues.
Humans
Main article: List of systems of the human body
There are 11 distinct organ systems in human be... | Biology and health sciences | Basic anatomy | Biology |
419386 | https://en.wikipedia.org/wiki/Applied%20science | Applied science | Applied science is the application of the scientific method and scientific knowledge to attain practical goals. It includes a broad range of disciplines, such as engineering and medicine. Applied science is often contrasted with basic science, which is focused on advancing scientific theories and laws that explain and ... | Technology | General | null |
419444 | https://en.wikipedia.org/wiki/Solenoidal%20vector%20field | Solenoidal vector field | In vector calculus a solenoidal vector field (also known as an incompressible vector field, a divergence-free vector field, or a transverse vector field) is a vector field v with divergence zero at all points in the field:
A common way of expressing this property is to say that the field has no sources or sinks.
Pro... | Mathematics | Multivariable and vector calculus | null |
419513 | https://en.wikipedia.org/wiki/Input%20method | Input method | An input method (or input method editor, commonly abbreviated IME) is an operating system component or program that enables users to generate characters not natively available on their input devices by using sequences of characters (or mouse operations) that are available to them. Using an input method is usually neces... | Technology | Computer software | null |
419522 | https://en.wikipedia.org/wiki/Leaf%20beetle | Leaf beetle | The insects of the beetle family Chrysomelidae are commonly known as leaf beetles, and include over 37,000 (and probably at least 50,000) species in more than 2,500 genera, making up one of the largest and most commonly encountered of all beetle families. Numerous subfamilies are recognized, but the precise taxonomy an... | Biology and health sciences | Beetles (Coleoptera) | Animals |
419667 | https://en.wikipedia.org/wiki/Missile%20guidance | Missile guidance | Missile guidance refers to a variety of methods of guiding a missile or a guided bomb to its intended target. The missile's target accuracy is a critical factor for its effectiveness. Guidance systems improve missile accuracy by improving its Probability of Guidance (Pg).
These guidance technologies can generally be d... | Technology | Missiles | null |
419751 | https://en.wikipedia.org/wiki/Great%20Dark%20Spot | Great Dark Spot | The Great Dark Spot (also known as GDS-89, for Great Dark Spot, 1989) was one of a series of dark spots on Neptune similar in appearance to Jupiter's Great Red Spot. In 1989, GDS-89 was the first Great Dark Spot on Neptune to be observed by NASA's Voyager 2 space probe. Like Jupiter's spot, the Great Dark Spots are ant... | Physical sciences | Solar System | Astronomy |
420067 | https://en.wikipedia.org/wiki/Foot-pound%20%28energy%29 | Foot-pound (energy) | The foot-pound force (symbol: ft⋅lbf, ft⋅lbf, or ft⋅lb ) is a unit of work or energy in the engineering and gravitational systems in United States customary and imperial units of measure. It is the energy transferred upon applying a force of one pound-force (lbf) through a linear displacement of one foot. The corres... | Physical sciences | Energy | Basics and measurement |
11559418 | https://en.wikipedia.org/wiki/International%20System%20of%20Quantities | International System of Quantities | The International System of Quantities (ISQ) is a standard system of quantities used in physics and in modern science in general. It includes basic quantities such as length and mass and the relationships between those quantities. This system underlies the International System of Units (SI) but does not itself determi... | Physical sciences | Measurement systems | Basics and measurement |
10129055 | https://en.wikipedia.org/wiki/Common%20octopus | Common octopus | The common octopus (Octopus vulgaris) is a mollusk belonging to the class Cephalopoda. Octopus vulgaris is one of the most studied of all octopus species, and also one of the most intelligent. It ranges from the eastern Atlantic, extends from the Mediterranean Sea and the southern coast of England, to the southern coas... | Biology and health sciences | Cephalopods | Animals |
94248 | https://en.wikipedia.org/wiki/Populus | Populus | Populus is a genus of 25–30 species of deciduous flowering plants in the family Salicaceae, native to most of the Northern Hemisphere. English names variously applied to different species include poplar (), aspen, and cottonwood.
The western balsam poplar (P. trichocarpa) was the first tree to have its full DNA code d... | Biology and health sciences | Malpighiales | Plants |
94287 | https://en.wikipedia.org/wiki/Action%20%28firearms%29 | Action (firearms) | In firearms terminology, an action is the functional mechanism of a breechloading firearm that handles (loads, locks, fires, extracts, and ejects) the ammunition cartridges, or the method by which that mechanism works. Actions are technically not present on muzzleloaders, as all those are single-shot firearms with a c... | Technology | Mechanisms_2 | null |
94858 | https://en.wikipedia.org/wiki/Thunder | Thunder | Thunder is the sound caused by lightning. Depending upon the distance from and nature of the lightning, it can range from a long, low rumble to a sudden, loud crack. The sudden increase in temperature and hence pressure caused by the lightning produces rapid expansion of the air in the path of a lightning bolt. In turn... | Physical sciences | Storms | Earth science |
95154 | https://en.wikipedia.org/wiki/Associative%20array | Associative array | In computer science, an associative array, map, symbol table, or dictionary is an abstract data type that stores a collection of (key, value) pairs, such that each possible key appears at most once in the collection. In mathematical terms, an associative array is a function with finite domain. It supports 'lookup', 're... | Mathematics | Data structures and types | null |
95160 | https://en.wikipedia.org/wiki/Spiny%20lobster | Spiny lobster | Spiny lobsters, also known as langustas, langouste, or rock lobsters, are a family (Palinuridae) of about 60 species of achelate crustaceans, in the Decapoda Reptantia. Spiny lobsters are also, especially in Australia, New Zealand, Ireland, South Africa, and the Bahamas, called crayfish, sea crayfish, or crawfish ("kre... | Biology and health sciences | Crayfishes and lobsters | Animals |
95250 | https://en.wikipedia.org/wiki/Development%20of%20the%20human%20body | Development of the human body | Development of the human body is the process of growth to maturity. The process begins with fertilization, where an egg released from the ovary of a female is penetrated by a sperm cell from a male. The resulting zygote develops through mitosis and cell differentiation, and the resulting embryo then implants in the ute... | Biology and health sciences | Development | null |
95464 | https://en.wikipedia.org/wiki/Centrosome | Centrosome | In cell biology, the centrosome (Latin centrum 'center' + Greek sōma 'body') (archaically cytocentre) is an organelle that serves as the main microtubule organizing center (MTOC) of the animal cell, as well as a regulator of cell-cycle progression. The centrosome provides structure for the cell. The centrosome is thoug... | Biology and health sciences | Organelles | Biology |
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