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625251 | https://en.wikipedia.org/wiki/Endodermis | Endodermis | The endodermis is the innermost layer of cortex in land plants. It is a cylinder of compact living cells, the radial walls of which are impregnated with hydrophobic substances (Casparian strip) to restrict apoplastic flow of water to the inside. The endodermis is the boundary between the cortex and the stele.
In many ... | Biology and health sciences | Plant tissues | Biology |
625404 | https://en.wikipedia.org/wiki/Stroke | Stroke | Stroke is a medical condition in which poor blood flow to a part of the brain causes cell death. There are two main types of stroke: ischemic, due to lack of blood flow, and hemorrhagic, due to bleeding. Both cause parts of the brain to stop functioning properly.
Signs and symptoms of stroke may include an inability t... | Biology and health sciences | Illness and injury | null |
626035 | https://en.wikipedia.org/wiki/Bed%20load | Bed load | The term bed load or bedload describes particles in a flowing fluid (usually water) that are transported along the stream bed. Bed load is complementary to suspended load and wash load.
Bed load moves by rolling, sliding, and/or saltating (hopping).
Generally, bed load downstream will be smaller and more rounded than... | Physical sciences | Sedimentology | Earth science |
627009 | https://en.wikipedia.org/wiki/Potassium%20cyanide | Potassium cyanide | Potassium cyanide is a compound with the formula KCN. It is a colorless salt, similar in appearance to sugar, that is highly soluble in water. Most KCN is used in gold mining, organic synthesis, and electroplating. Smaller applications include jewellery for chemical gilding and buffing. Potassium cyanide is highly toxi... | Physical sciences | Cyanide salts | Chemistry |
627188 | https://en.wikipedia.org/wiki/Tragopan | Tragopan | Tragopan is a bird genus in the pheasant family Phasianidae. Member of the genus are commonly called "horned pheasants" because males have two brightly colored, fleshy horns on their head that can be erected during courtship displays. The habit of tragopans to nest in trees is unique among phasianids.
Taxonomy
The gen... | Biology and health sciences | Galliformes | Animals |
627476 | https://en.wikipedia.org/wiki/Udder | Udder | An udder is an organ formed of two or four mammary glands on the females of dairy animals and ruminants such as cattle, goats, and sheep. An udder is equivalent to the breast in primates, elephantine pachyderms and other mammals. The udder is a single mass hanging beneath the animal, consisting of pairs of mammary glan... | Biology and health sciences | Integumentary system | Biology |
627537 | https://en.wikipedia.org/wiki/Cladonia%20rangiferina | Cladonia rangiferina | Cladonia rangiferina, also known as reindeer cup lichen, reindeer lichen (cf. Sw. renlav) or grey reindeer lichen, is a light-coloured fruticose, cup lichen species in the family Cladoniaceae. It grows in both hot and cold climates in well-drained, open environments. Found primarily in areas of alpine tundra, it is ext... | Biology and health sciences | Lichens | Plants |
2271221 | https://en.wikipedia.org/wiki/Carbonate%20mineral | Carbonate mineral | Carbonate minerals are those minerals containing the carbonate ion, .
Carbonate divisions
Anhydrous carbonates
Calcite group: trigonal
Calcite CaCO3
Gaspéite (Ni,Mg,Fe2+)CO3
Magnesite MgCO3
Otavite CdCO3
Rhodochrosite MnCO3
Siderite FeCO3
Smithsonite ZnCO3
Spherocobaltite CoCO3
Aragonite group: orthorhombic
Aragoni... | Physical sciences | Minerals | Earth science |
2272102 | https://en.wikipedia.org/wiki/Protoplanetary%20nebula | Protoplanetary nebula | A protoplanetary nebula or preplanetary nebula (PPN, plural PPNe) is an astronomical object which is at the short-lived episode during a star's rapid evolution between the late asymptotic giant branch (LAGB) phase and the subsequent planetary nebula (PN) phase. A PPN emits strongly in infrared radiation, and is a kind... | Physical sciences | Stellar astronomy | Astronomy |
2273006 | https://en.wikipedia.org/wiki/Columbian%20mammoth | Columbian mammoth | The Columbian mammoth (Mammuthus columbi) is an extinct species of mammoth that inhabited North America from southern Canada to Costa Rica during the Pleistocene epoch. The Columbian mammoth descended from Eurasian steppe mammoths that colonised North America during the Early Pleistocene around 1.5–1.3 million years ag... | Biology and health sciences | Proboscidea | Animals |
2273079 | https://en.wikipedia.org/wiki/Red%20river%20hog | Red river hog | The red river hog (Potamochoerus porcus) or bushpig (a name also used for Potamochoerus larvatus) is a wild member of the pig family living in Africa, with most of its distribution in the Guinean and Congolian forests. It is rarely seen away from rainforests, and generally prefers areas near rivers or swamps.
Descript... | Biology and health sciences | Pigs_2 | Animals |
2273378 | https://en.wikipedia.org/wiki/Arene%20substitution%20pattern | Arene substitution pattern | Arene substitution patterns are part of organic chemistry IUPAC nomenclature and pinpoint the position of substituents other than hydrogen in relation to each other on an aromatic hydrocarbon.
Ortho, meta, and para substitution
In ortho-substitution, two substituents occupy positions next to each other, which may b... | Physical sciences | Aromatic hydrocarbons | Chemistry |
2273604 | https://en.wikipedia.org/wiki/Coordination%20geometry | Coordination geometry | The coordination geometry of an atom is the geometrical pattern defined by the atoms around the central atom. The term is commonly applied in the field of inorganic chemistry, where diverse structures are observed. The coordination geometry depends on the number, not the type, of ligands bonded to the metal centre as ... | Physical sciences | Bond structure | Chemistry |
2274197 | https://en.wikipedia.org/wiki/Stegoceras | Stegoceras | Stegoceras is a genus of pachycephalosaurid (dome-headed) dinosaur that lived in what is now North America during the Late Cretaceous period, about 77.5 to 74 million years ago (mya). The first specimens from Alberta, Canada, were described in 1902, and the type species Stegoceras validum was based on these remains. Th... | Biology and health sciences | Ornitischians | Animals |
2274247 | https://en.wikipedia.org/wiki/Psittacosaurus | Psittacosaurus | Psittacosaurus ( ; "parrot lizard") is a genus of extinct ceratopsian dinosaur from the Early Cretaceous of what is now Asia, existing between 125 and 105 million years ago. It is notable for being the most species-rich non-avian dinosaur genus. Up to 12 species are known, from across China, Mongolia, Russia, and Thai... | Biology and health sciences | Ornitischians | Animals |
2274270 | https://en.wikipedia.org/wiki/Notoungulata | Notoungulata | Notoungulata is an extinct order of ungulates that inhabited South America from the early Paleocene to the end of the Pleistocene, living from approximately 61 million to 11,000 years ago. Notoungulates were morphologically diverse, with forms resembling animals as disparate as rabbits and rhinoceroses. Notoungulata ar... | Biology and health sciences | Mammals: General | Animals |
2274399 | https://en.wikipedia.org/wiki/Pterodaustro | Pterodaustro | Pterodaustro (from Greek , and Latin , ) is a genus of ctenochasmatid pterodactyloid pterosaur from South America. Its fossil remains dated back to the Early Cretaceous period, about 105 million years ago.
Discovery and naming
The first fossils, among them the holotype PVL 2571, a thigh bone, were discovered during... | Biology and health sciences | Pterosaurs | Animals |
17598541 | https://en.wikipedia.org/wiki/Blueberry | Blueberry | Blueberries are a widely distributed and widespread group of perennial flowering plants with blue or purple berries. They are classified in the section Cyanococcus within the genus Vaccinium. Commercial blueberries—both wild (lowbush) and cultivated (highbush)—are all native to North America. The highbush varieties wer... | Biology and health sciences | Ericales | null |
17599355 | https://en.wikipedia.org/wiki/White | White | White is the lightest color and is achromatic (having no chroma). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully reflect and scatter all the visible wavelengths of light. White on television and computer screens is created by a mixture of red, blue, and green... | Physical sciences | Color terms | null |
1052910 | https://en.wikipedia.org/wiki/Miniaturization | Miniaturization | Miniaturization (Br.Eng.: miniaturisation) is the trend to manufacture ever-smaller mechanical, optical, and electronic products and devices. Examples include miniaturization of mobile phones, computers and vehicle engine downsizing. In electronics, the exponential scaling and miniaturization of silicon MOSFETs (MOS tr... | Technology | General | null |
1053424 | https://en.wikipedia.org/wiki/African%20palm%20civet | African palm civet | The African palm civet (Nandinia binotata), also known as the two-spotted palm civet, is a small feliform mammal widely distributed in sub-Saharan Africa. It is listed as least concern on the IUCN Red List.
Characteristics
The African palm civet is grey to dark brown with dark spots on the back. It has short legs, sm... | Biology and health sciences | Other carnivora | Animals |
1054508 | https://en.wikipedia.org/wiki/M134%20Minigun | M134 Minigun | The M134 Minigun is an American 7.62×51mm NATO six-barrel rotary machine gun with a high rate of fire (2,000 to 6,000 rounds per minute). It features a Gatling-style rotating barrel assembly with an external power source, normally an electric motor. The "Mini" in the name is in comparison to larger-caliber designs that... | Technology | Specific firearms | null |
1055255 | https://en.wikipedia.org/wiki/Altazimuth%20mount | Altazimuth mount | An altazimuth mount or alt-azimuth mount is a simple two-axis mount for supporting and rotating an instrument about two perpendicular axes – one vertical and the other horizontal. Rotation about the vertical axis varies the azimuth (compass bearing) of the pointing direction of the instrument. Rotation about the horizo... | Technology | Telescope | null |
1055334 | https://en.wikipedia.org/wiki/Equatorial%20mount | Equatorial mount | An equatorial mount is a mount for instruments that compensates for Earth's rotation by having one rotational axis, called polar axis, parallel to the Earth's axis of rotation. This type of mount is used for astronomical telescopes and cameras. The advantage of an equatorial mount lies in its ability to allow the instr... | Technology | Telescope | null |
1055890 | https://en.wikipedia.org/wiki/Sustainable%20energy | Sustainable energy | Energy is sustainable if it "meets the needs of the present without compromising the ability of future generations to meet their own needs." Definitions of sustainable energy usually look at its effects on the environment, the economy, and society. These impacts range from greenhouse gas emissions and air pollution to ... | Technology | Energy: General | null |
1056044 | https://en.wikipedia.org/wiki/Nimravidae | Nimravidae | Nimravidae is an extinct family of carnivorans, sometimes known as false saber-toothed cats, whose fossils are found in North America and Eurasia. Not considered to belong to the true cats (family Felidae), the nimravids are generally considered closely related and classified as a distinct family in the suborder Felifo... | Biology and health sciences | Other carnivora | Animals |
178649 | https://en.wikipedia.org/wiki/General%20topology | General topology | In mathematics, general topology (or point set topology) is the branch of topology that deals with the basic set-theoretic definitions and constructions used in topology. It is the foundation of most other branches of topology, including differential topology, geometric topology, and algebraic topology.
The fundamenta... | Mathematics | Geometry | null |
178690 | https://en.wikipedia.org/wiki/Steamboat | Steamboat | A steamboat is a boat that is propelled primarily by steam power, typically driving propellers or paddlewheels. The term steamboat is used to refer to small steam-powered vessels working on lakes, rivers, and in short-sea shipping. The development of the steamboat led to the larger steamship, which is a seaworthy and o... | Technology | Naval transport | null |
178702 | https://en.wikipedia.org/wiki/Pound%20%28force%29 | Pound (force) | The pound of force or pound-force (symbol: lbf, sometimes lbf,) is a unit of force used in some systems of measurement, including English Engineering units and the foot–pound–second system.
Pound-force should not be confused with pound-mass (lb), often simply called "pound", which is a unit of mass; nor should these ... | Physical sciences | Force | Basics and measurement |
178769 | https://en.wikipedia.org/wiki/Intravenous%20therapy | Intravenous therapy | Intravenous therapy (abbreviated as IV therapy) is a medical technique that administers fluids, medications and nutrients directly into a person's vein. The intravenous route of administration is commonly used for rehydration or to provide nutrients for those who cannot, or will not—due to reduced mental states or othe... | Biology and health sciences | Treatments | Health |
178953 | https://en.wikipedia.org/wiki/Tree-kangaroo | Tree-kangaroo | Tree-kangaroos are marsupials of the genus Dendrolagus, adapted for arboreal locomotion. They inhabit the tropical rainforests of New Guinea and far northeastern Queensland, Australia along with some of the islands in the region. All tree-kangaroos are considered threatened due to hunting and habitat destruction. They... | Biology and health sciences | Diprotodontia | Animals |
179197 | https://en.wikipedia.org/wiki/Desmostylia | Desmostylia | The Desmostylia (from Greek δεσμά desma, "bundle", and στῦλος stylos, "pillar") are an extinct order of aquatic mammals native to the North Pacific from the early Oligocene (Rupelian) to the late Miocene (Tortonian) (). Desmostylians are the only known extinct order of marine mammals.
The Desmostylia, together with Si... | Biology and health sciences | Other afrotheres | Animals |
179242 | https://en.wikipedia.org/wiki/Infertility | Infertility | Infertility is the inability of a couple to reproduce by natural means. It is usually not the natural state of a healthy adult. Exceptions include children who have not undergone puberty, which is the body's start of reproductive capacity. It is also a normal state in women after menopause.
In humans, infertility is t... | Biology and health sciences | Health and fitness | null |
179252 | https://en.wikipedia.org/wiki/Gastropoda | Gastropoda | Gastropods (), commonly known as slugs and snails, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, freshwater, and from the land. There are many thousands of species of sea snails and slugs, as well as freshwater ... | Biology and health sciences | Gastropods | Animals |
179260 | https://en.wikipedia.org/wiki/No-hair%20theorem | No-hair theorem | The no-hair theorem (which is a hypothesis) states that all stationary black hole solutions of the Einstein–Maxwell equations of gravitation and electromagnetism in general relativity can be completely characterized by only three independent externally observable classical parameters: mass, angular momentum, and electr... | Physical sciences | Theory of relativity | Physics |
179505 | https://en.wikipedia.org/wiki/Physical%20property | Physical property | A physical property is any property of a physical system that is measurable. The changes in the physical properties of a system can be used to describe its changes between momentary states. A quantifiable physical property is called physical quantity. Measurable physical quantities are often referred to as observables.... | Physical sciences | Physics basics: General | Physics |
179716 | https://en.wikipedia.org/wiki/Uppsala%20General%20Catalogue | Uppsala General Catalogue | The Uppsala General Catalogue of Galaxies (UGC) is a catalogue of 12,921 galaxies visible from the northern hemisphere. It was first published in 1973.
The catalogue includes essentially all galaxies north of declination −02°30′ and to a limiting diameter of 1.0 arcminute or to a limiting apparent magnitude of 14.5. T... | Physical sciences | Surveys and Catalogs | Astronomy |
179863 | https://en.wikipedia.org/wiki/Climate%20of%20Antarctica | Climate of Antarctica | The climate of Antarctica is the coldest on Earth. The continent is also extremely dry (it is a desert), averaging of precipitation per year. Snow rarely melts on most parts of the continent, and, after being compressed, becomes the glacier ice that makes up the ice sheet. Weather fronts rarely penetrate far into the ... | Physical sciences | Climates | Earth science |
179919 | https://en.wikipedia.org/wiki/Solenoid | Solenoid | A solenoid () is a type of electromagnet formed by a helical coil of wire whose length is substantially greater than its diameter, which generates a controlled magnetic field. The coil can produce a uniform magnetic field in a volume of space when an electric current is passed through it.
André-Marie Ampère coined the... | Technology | Components | null |
180090 | https://en.wikipedia.org/wiki/Jansky | Jansky | The jansky (symbol Jy, plural janskys) is a non-SI unit of spectral flux density, or spectral irradiance, used especially in radio astronomy. It is equivalent to 10−26 watts per square metre per hertz.
The spectral flux density or monochromatic flux, , of a source is the integral of the spectral radiance, , over the s... | Physical sciences | Specific intensity | Basics and measurement |
180121 | https://en.wikipedia.org/wiki/Medication | Medication | A medication (also called medicament, medicine, pharmaceutical drug, medicinal product, medicinal drug or simply drug) is a drug used to diagnose, cure, treat, or prevent disease. Drug therapy (pharmacotherapy) is an important part of the medical field and relies on the science of pharmacology for continual advancement... | Biology and health sciences | Drugs and medication | null |
180210 | https://en.wikipedia.org/wiki/Biogeographic%20realm | Biogeographic realm | A biogeographic realm is the broadest biogeographic division of Earth's land surface, based on distributional patterns of terrestrial organisms. They are subdivided into bioregions, which are further subdivided into ecoregions.
A biogeographic realm is also known as "ecozone", although that term may also refer to ecore... | Biology and health sciences | Ecology | Biology |
180211 | https://en.wikipedia.org/wiki/Precious%20metal | Precious metal | Precious metals are rare, naturally occurring metallic chemical elements of high economic value. Precious metals, particularly the noble metals, are more corrosion resistant and less chemically reactive than most elements. They are usually ductile and have a high lustre. Historically, precious metals were important as ... | Physical sciences | d-Block | Chemistry |
180234 | https://en.wikipedia.org/wiki/Kilowatt-hour | Kilowatt-hour | A kilowatt-hour (unit symbol: kW⋅h or kW h; commonly written as kWh) is a non-SI unit of energy equal to 3.6 megajoules (MJ) in SI units, which is the energy delivered by one kilowatt of power for one hour. Kilowatt-hours are a common billing unit for electrical energy supplied by electric utilities. Metric prefixes ar... | Physical sciences | Energy | Basics and measurement |
180251 | https://en.wikipedia.org/wiki/SPICE | SPICE | SPICE (Simulation Program with Integrated Circuit Emphasis) is a general-purpose, open-source analog electronic circuit simulator.
It is a program used in integrated circuit and board-level design to check the integrity of circuit designs and to predict circuit behavior.
Introduction
Unlike board-level designs compos... | Technology | Electronics: General | null |
180279 | https://en.wikipedia.org/wiki/Ounce | Ounce | The ounce () is any of several different units of mass, weight, or volume and is derived almost unchanged from the , an Ancient Roman unit of measurement.
The avoirdupois ounce (exactly ) is avoirdupois pound; this is the United States customary and British imperial ounce. It is primarily used in the United States.
... | Physical sciences | Mass | null |
180545 | https://en.wikipedia.org/wiki/Daikon | Daikon | Daikon or mooli, Raphanus sativus var. longipinnatus, is a mild-flavored winter radish usually characterized by fast-growing leaves and a long, white, root. Originally native to continental East Asia, daikon is harvested and consumed throughout the region, as well as in South Asia, and is available internationally. In... | Biology and health sciences | Brassicales | null |
180638 | https://en.wikipedia.org/wiki/Baikonur%20Cosmodrome | Baikonur Cosmodrome | The Baikonur Cosmodrome is a spaceport operated by Russia within Kazakhstan. Located in the Kazakh city of Baikonur, it is the largest operational space launch facility in terms of area. All Russian crewed spaceflights are launched from Baikonur.
Situated in the Kazakh Steppe, some above sea level, it is to the east... | Technology | Programs and launch sites | null |
180735 | https://en.wikipedia.org/wiki/Cart | Cart | A cart or dray (Australia and New Zealand) is a vehicle designed for transport, using two wheels and normally pulled by draught animals such as horses, donkeys, mules and oxen, or even smaller animals such as goats or large dogs.
A handcart is pulled or pushed by one or more people.
Over time, the word "cart" has exp... | Technology | Animal-powered transport | null |
180870 | https://en.wikipedia.org/wiki/Color%20charge | Color charge | Color charge is a property of quarks and gluons that is related to the particles' strong interactions in the theory of quantum chromodynamics (QCD). Like electric charge, it determines how quarks and gluons interact through the strong force; however, rather than there being only positive and negative charges, there are... | Physical sciences | Quantum numbers | Physics |
180930 | https://en.wikipedia.org/wiki/Geology%20of%20the%20Appalachians | Geology of the Appalachians | The geology of the Appalachians dates back more than 1.2 billion years to the Mesoproterozoic era when two continental cratons collided to form the supercontinent Rodinia, 500 million years prior to the development of the range during the formation of Pangea. The rocks exposed in today's Appalachian Mountains reveal el... | Physical sciences | Geologic features | Earth science |
181146 | https://en.wikipedia.org/wiki/Attack%20aircraft | Attack aircraft | An attack aircraft, strike aircraft, or attack bomber is a tactical military aircraft that has a primary role of carrying out airstrikes with greater precision than bombers, and is prepared to encounter strong low-level air defenses while pressing the attack. This class of aircraft is designed mostly for close air supp... | Technology | Military aviation | null |
181158 | https://en.wikipedia.org/wiki/Coma%20Berenices | Coma Berenices | Coma Berenices is an ancient asterism in the northern sky, which has been defined as one of the 88 modern constellations. It is in the direction of the fourth galactic quadrant, between Leo and Boötes, and it is visible in both hemispheres. Its name means "Berenice's Hair" in Latin and refers to Queen Berenice II of Eg... | Physical sciences | Other | Astronomy |
181160 | https://en.wikipedia.org/wiki/Nimitz-class%20aircraft%20carrier | Nimitz-class aircraft carrier | The Nimitz class is a class of ten nuclear-powered aircraft carriers in service with the United States Navy. The lead ship of the class is named after World War II United States Pacific Fleet commander Fleet Admiral Chester W. Nimitz, who was the last living U.S. Navy officer to hold the rank. With an overall length of... | Technology | Naval warfare | null |
181169 | https://en.wikipedia.org/wiki/Sand%20dollar | Sand dollar | Sand dollars (also known as sea cookies or snapper biscuits in New Zealand and Brazil, or pansy shells in South Africa) are species of flat, burrowing sea urchins belonging to the order Clypeasteroida. Some species within the order, not quite as flat, are known as sea biscuits. Sand dollars can also be called "sand cak... | Biology and health sciences | Echinoderms | Animals |
181173 | https://en.wikipedia.org/wiki/Airbus%20A380 | Airbus A380 | The Airbus A380 is a very large wide-body airliner, developed and produced by Airbus. It is the world's largest passenger airliner and the only full-length double-deck jet airliner. Airbus studies started in 1988, and the project was announced in 1990 to challenge the dominance of the Boeing 747 in the long-haul market... | Technology | Specific aircraft_2 | null |
181178 | https://en.wikipedia.org/wiki/Acer%20rubrum | Acer rubrum | Acer rubrum, the red maple, also known as swamp maple, water maple, or soft maple, is one of the most common and widespread deciduous trees of eastern and central North America. The U.S. Forest Service recognizes it as the most abundant native tree in eastern North America. The red maple ranges from southeastern Manito... | Biology and health sciences | Sapindales | Plants |
181193 | https://en.wikipedia.org/wiki/Quercus%20velutina | Quercus velutina | Quercus velutina (Latin 'velutina', "velvety") , the black oak, is a species of oak in the red oak group (Quercus sect. Lobatae), native and widespread in eastern and central North America. It is sometimes called the eastern black oak.
Quercus velutina was previously known as yellow oak due to the yellow pigment in it... | Biology and health sciences | Fagales | Plants |
181226 | https://en.wikipedia.org/wiki/Optometry | Optometry | Optometry is a specialized health care profession that involves examining the eyes and related structures for defects or abnormalities. Optometrists are health care professionals who typically provide comprehensive eye care.
In the United States of America and Canada, optometrists are those that hold a 4-year Doctor o... | Biology and health sciences | Fields of medicine | null |
4266335 | https://en.wikipedia.org/wiki/Thirty%20Meter%20Telescope | Thirty Meter Telescope | The Thirty Meter Telescope (TMT) is a planned extremely large telescope (ELT) proposed to be built on Mauna Kea, on the island of Hawai'i. The TMT would become the largest visible-light telescope on Mauna Kea.
Scientists have been considering ELTs since the mid 1980s. In 2000, astronomers considered the possibility of... | Technology | Ground-based observatories | null |
4267582 | https://en.wikipedia.org/wiki/Bordetella%20pertussis | Bordetella pertussis | Bordetella pertussis is a Gram-negative, aerobic, pathogenic, encapsulated coccobacillus bacterium of the genus Bordetella, and the causative agent of pertussis or whooping cough. Its virulence factors include pertussis toxin, adenylate cyclase toxin, filamentous haemagglutinin, pertactin, fimbria, and tracheal cytotox... | Biology and health sciences | Gram-negative bacteria | Plants |
4269567 | https://en.wikipedia.org/wiki/Dog | Dog | The dog (Canis familiaris or Canis lupus familiaris) is a domesticated descendant of the wolf. Also called the domestic dog, it was selectively bred from an extinct population of wolves during the Late Pleistocene by hunter-gatherers. The dog was the first species to be domesticated by humans, over 14,000 years ago and... | Biology and health sciences | Biology | null |
4270546 | https://en.wikipedia.org/wiki/Calocedrus%20decurrens | Calocedrus decurrens | Calocedrus decurrens, with the common names incense cedar and California incense cedar (syn. Libocedrus decurrens Torr.), is a species of coniferous tree native to western North America. It is the most widely known species in the genus, and is often simply called incense cedar without the regional qualifier.
Descript... | Biology and health sciences | Cupressaceae | Plants |
1622030 | https://en.wikipedia.org/wiki/Walker%20circulation | Walker circulation | The Walker circulation, also known as the Walker cell, is a conceptual model of the air flow in the tropics in the lower atmosphere (troposphere). According to this model, parcels of air follow a closed circulation in the zonal and vertical directions. This circulation, which is roughly consistent with observations, i... | Physical sciences | Atmospheric circulation | null |
1624795 | https://en.wikipedia.org/wiki/Weak%20hypercharge | Weak hypercharge | In the Standard Model of electroweak interactions of particle physics, the weak hypercharge is a quantum number relating the electric charge and the third component of weak isospin. It is frequently denoted and corresponds to the gauge symmetry U(1).
It is conserved (only terms that are overall weak-hypercharge neutr... | Physical sciences | Quantum numbers | Physics |
1624916 | https://en.wikipedia.org/wiki/Pachycephalosauria | Pachycephalosauria | Pachycephalosauria (; from Greek παχυκεφαλόσαυρος for 'thick headed lizards') is a clade of ornithischian dinosaurs. Along with Ceratopsia, it makes up the clade Marginocephalia. With the exception of two species, most pachycephalosaurs lived during the Late Cretaceous Period, dating between about 85.8 and 66 million y... | Biology and health sciences | Ornitischians | Animals |
8932473 | https://en.wikipedia.org/wiki/Hypoesthesia | Hypoesthesia | Hypoesthesia or numbness is a common side effect of various medical conditions that manifests as a reduced sense of touch or sensation, or a partial loss of sensitivity to sensory stimuli. In everyday speech this is generally referred to as numbness.
Hypoesthesia primarily results from damage to nerves, and from block... | Biology and health sciences | Symptoms and signs | Health |
8934260 | https://en.wikipedia.org/wiki/VirtualBox | VirtualBox | Oracle VirtualBox (formerly Sun VirtualBox, Sun xVM VirtualBox and InnoTek VirtualBox) is a hosted hypervisor for x86 virtualization developed by Oracle Corporation. VirtualBox was originally created by InnoTek Systemberatung GmbH, which was acquired by Sun Microsystems in 2008, which was in turn acquired by Oracle in ... | Technology | Virtualization | null |
9628780 | https://en.wikipedia.org/wiki/Animal%20migration | Animal migration | Animal migration is the relatively long-distance movement of individual animals, usually on a seasonal basis. It is the most common form of migration in ecology. It is found in all major animal groups, including birds, mammals, fish, reptiles, amphibians, insects, and crustaceans. The cause of migration may be local cl... | Biology and health sciences | Ethology | null |
9630226 | https://en.wikipedia.org/wiki/Toei%20Subway | Toei Subway | The is one of two subway systems in Tokyo, the other being Tokyo Metro. The Toei Subway lines were originally licensed to the Teito Rapid Transit Authority (the predecessor of Tokyo Metro) but were constructed by the Tokyo Metropolitan Government following transfers of the licenses for each line. The subway has run at... | Technology | Japan | null |
9630609 | https://en.wikipedia.org/wiki/Giant%20w%C4%93t%C4%81 | Giant wētā | Giant wētā are several species of wētā in the genus Deinacrida of the family Anostostomatidae. Giant wētā are endemic to New Zealand and all but one species are protected by law because they are considered at risk of extinction.
There are eleven species of giant wētā, most of which are larger than other wētā, despite ... | Biology and health sciences | Orthoptera | Animals |
3133158 | https://en.wikipedia.org/wiki/Basket%20weaving | Basket weaving | Basket weaving (also basketry or basket making) is the process of weaving or sewing pliable materials into three-dimensional artifacts, such as baskets, mats, mesh bags or even furniture. Craftspeople and artists specialized in making baskets may be known as basket makers and basket weavers. Basket weaving is also a ru... | Technology | Techniques_2 | null |
3134585 | https://en.wikipedia.org/wiki/Charge%20density | Charge density | In electromagnetism, charge density is the amount of electric charge per unit length, surface area, or volume. Volume charge density (symbolized by the Greek letter ρ) is the quantity of charge per unit volume, measured in the SI system in coulombs per cubic meter (C⋅m−3), at any point in a volume. Surface charge den... | Physical sciences | Electrostatics | Physics |
3136140 | https://en.wikipedia.org/wiki/Mass%20flow%20%28life%20sciences%29 | Mass flow (life sciences) | In the life sciences, mass flow, also known as mass transfer and bulk flow, is the movement of fluids down a pressure or temperature gradient. As such, mass flow is a subject of study in both fluid dynamics and biology. Examples of mass flow include blood circulation and transport of water in vascular plant tissues. Ma... | Physical sciences | Fluid mechanics | Physics |
3136448 | https://en.wikipedia.org/wiki/Rough-skinned%20newt | Rough-skinned newt | The rough-skinned newt or roughskin newt (Taricha granulosa) is a North American newt known for the strong toxin exuded from its skin.
Appearance
A stocky newt with rounded snout, it ranges from light brown to olive or brownish-black on top, with the underside, including the head, legs, and tail, a contrasting orange... | Biology and health sciences | Salamanders and newts | Animals |
3137635 | https://en.wikipedia.org/wiki/Sumatran%20orangutan | Sumatran orangutan | The Sumatran orangutan (Pongo abelii) is one of the three species of orangutans. Critically endangered, and found only in the north of the Indonesian island of Sumatra, it is rarer than the Bornean orangutan but more common than the recently identified Tapanuli orangutan, also found in Sumatra. Its common name is based... | Biology and health sciences | Apes | Animals |
13655986 | https://en.wikipedia.org/wiki/Problem%20statement | Problem statement | A problem statement is a description of an issue to be addressed, or a condition to be improved upon. It identifies the gap between the current problem and goal. The first condition of solving a problem is understanding the problem, which can be done by way of a problem statement.
Problem statements are used by most b... | Technology | Basics | null |
16391238 | https://en.wikipedia.org/wiki/Siliceous%20ooze | Siliceous ooze | Siliceous ooze is a type of biogenic pelagic sediment located on the deep ocean floor. Siliceous oozes are the least common of the deep sea sediments, and make up approximately 15% of the ocean floor. Oozes are defined as sediments which contain at least 30% skeletal remains of pelagic microorganisms. Siliceous oozes a... | Physical sciences | Sedimentology | Earth science |
16392927 | https://en.wikipedia.org/wiki/Bubonic%20plague | Bubonic plague | Bubonic plague is one of three types of plague caused by the bacterium Yersinia pestis. One to seven days after exposure to the bacteria, flu-like symptoms develop. These symptoms include fever, headaches, and vomiting, as well as swollen and painful lymph nodes occurring in the area closest to where the bacteria enter... | Biology and health sciences | Infectious disease | null |
16398712 | https://en.wikipedia.org/wiki/Sedimentary%20structures | Sedimentary structures | Sedimentary structures include all kinds of features in sediments and sedimentary rocks, formed at the time of deposition.
Sediments and sedimentary rocks are characterized by bedding, which occurs when layers of sediment, with different particle sizes are deposited on top of each other. These beds range from millimet... | Physical sciences | Sedimentology | Earth science |
16399074 | https://en.wikipedia.org/wiki/Virgocentric%20flow | Virgocentric flow | The Virgocentric flow (VCF) is the preferred movement of Local Group galaxies towards the Virgo cluster caused by its overwhelming gravity, which separates bound objects from the Hubble flow of cosmic expansion. The VCF can refer to the Local Group's movement towards the Virgo Cluster, since its center is considered sy... | Physical sciences | Notable galaxies | Astronomy |
2275696 | https://en.wikipedia.org/wiki/Saiga%20antelope | Saiga antelope | The saiga antelope (, Saiga tatarica), or saiga, is a species of antelope which during antiquity inhabited a vast area of the Eurasian steppe, spanning the foothills of the Carpathian Mountains in the northwest and Caucasus in the southwest into Mongolia in the northeast and Dzungaria in the southeast. During the Pleis... | Biology and health sciences | Bovidae | Animals |
357757 | https://en.wikipedia.org/wiki/Urticaceae | Urticaceae | The Urticaceae are a family, the nettle family, of flowering plants. The family name comes from the genus Urtica. The Urticaceae include a number of well-known and useful plants, including nettles in the genus Urtica, ramie (Boehmeria nivea), māmaki (Pipturus albidus), and ajlai (Debregeasia saeneb).
The family incl... | Biology and health sciences | Rosales | Plants |
357978 | https://en.wikipedia.org/wiki/Harpy%20eagle | Harpy eagle | The harpy eagle (Harpia harpyja) is a large neotropical species of eagle. It is also called the American harpy eagle to distinguish it from the Papuan eagle, which is sometimes known as the New Guinea harpy eagle or Papuan harpy eagle. It is the largest bird of prey throughout its range, and among the largest extant sp... | Biology and health sciences | Accipitrimorphae | Animals |
358277 | https://en.wikipedia.org/wiki/Cayley%20graph | Cayley graph | In mathematics, a Cayley graph, also known as a Cayley color graph, Cayley diagram, group diagram, or color group, is a graph that encodes the abstract structure of a group. Its definition is suggested by Cayley's theorem (named after Arthur Cayley), and uses a specified set of generators for the group. It is a central... | Mathematics | Graph theory | null |
358490 | https://en.wikipedia.org/wiki/Avoidant%20personality%20disorder | Avoidant personality disorder | Avoidant personality disorder (AvPD), or anxious personality disorder, is a cluster C personality disorder characterized by excessive social anxiety and inhibition, fear of intimacy (despite an intense desire for it), severe feelings of inadequacy and inferiority, and an overreliance on avoidance of feared stimuli (e.g... | Biology and health sciences | Mental disorders | Health |
358970 | https://en.wikipedia.org/wiki/BeiDou | BeiDou | The BeiDou Navigation Satellite System (BDS; ) is a satellite-based radio navigation system owned and operated by the China National Space Administration. It provides geolocation and time information to a BDS receiver anywhere on or near the Earth where there is an unobstructed line of sight to four or more BDS satelli... | Technology | Navigation | null |
359135 | https://en.wikipedia.org/wiki/Chemical%20kinetics | Chemical kinetics | Chemical kinetics, also known as reaction kinetics, is the branch of physical chemistry that is concerned with understanding the rates of chemical reactions. It is different from chemical thermodynamics, which deals with the direction in which a reaction occurs but in itself tells nothing about its rate. Chemical kinet... | Physical sciences | Chemical reactions | null |
359238 | https://en.wikipedia.org/wiki/Prescription%20drug | Prescription drug | A prescription drug (also prescription medication, prescription medicine or prescription-only medication) is a pharmaceutical drug that is permitted to be dispensed only to those with a medical prescription. In contrast, over-the-counter drugs can be obtained without a prescription. The reason for this difference in su... | Biology and health sciences | Drugs and pharmacology | null |
359396 | https://en.wikipedia.org/wiki/7z | 7z | 7z is a compressed archive file format that supports several different data compression, encryption and pre-processing algorithms. The 7z format initially appeared as implemented by the 7-Zip archiver. The 7-Zip program is publicly available under the terms of the GNU Lesser General Public License. The LZMA SDK 4.62... | Technology | File formats | null |
359657 | https://en.wikipedia.org/wiki/Pollux%20%28star%29 | Pollux (star) | Pollux is the brightest star in the constellation of Gemini. It has the Bayer designation β Geminorum, which is Latinised to Beta Geminorum and abbreviated Beta Gem or β Gem. This is an orange-hued, evolved red giant located at a distance of 34 light-years, making it the closest red giant (and giant star) to the Sun. S... | Physical sciences | Notable stars | Astronomy |
360310 | https://en.wikipedia.org/wiki/Reaper | Reaper | A reaper is a farm implement that reaps (cuts and often also gathers) crops at harvest when they are ripe. Usually the crop involved is a cereal grass, especially wheat. The first documented reaping machines were Gallic reapers that were used in Roman times in what would become modern-day France. The Gallic reaper inv... | Technology | Farm and garden machinery | null |
360939 | https://en.wikipedia.org/wiki/Hickory | Hickory | Hickory is a common name for trees composing the genus Carya, which includes 19 species accepted by Plants of the World Online.
Seven species are native to southeast Asia in China, Indochina, and northeastern India (Assam), and twelve are native to North America. A number of hickory species are used for their edible ... | Biology and health sciences | Fagales | null |
361021 | https://en.wikipedia.org/wiki/Electrolytic%20cell | Electrolytic cell | An electrolytic cell is an electrochemical cell that utilizes an external source of electrical energy to force a chemical reaction that would otherwise not occur. The external energy source is a voltage applied between the cell's two electrodes; an anode (positively charged electrode) and a cathode (negatively charged ... | Physical sciences | Electrochemistry | Chemistry |
361038 | https://en.wikipedia.org/wiki/Chemical%20polarity | Chemical polarity | In chemistry, polarity is a separation of electric charge leading to a molecule or its chemical groups having an electric dipole moment, with a negatively charged end and a positively charged end.
Polar molecules must contain one or more polar bonds due to a difference in electronegativity between the bonded atoms. Mo... | Physical sciences | Supramolecular chemistry | Chemistry |
361103 | https://en.wikipedia.org/wiki/Honey%20badger | Honey badger | The honey badger (Mellivora capensis), also known as the ratel ( or ), is a mammal widely distributed across Africa, Southwest Asia, and the Indian subcontinent. It is the only living species in both the genus Mellivora and the subfamily Mellivorinae. It has a fairly long body, with a distinctly thick-set and broad bac... | Biology and health sciences | Carnivora | null |
361210 | https://en.wikipedia.org/wiki/Rational%20function | Rational function | In mathematics, a rational function is any function that can be defined by a rational fraction, which is an algebraic fraction such that both the numerator and the denominator are polynomials. The coefficients of the polynomials need not be rational numbers; they may be taken in any field . In this case, one speaks of ... | Mathematics | Specific functions | null |
361245 | https://en.wikipedia.org/wiki/Torque%20wrench | Torque wrench | A torque wrench is a tool used to apply a specific torque to a fastener such as a nut, bolt, or lag screw. It is usually in the form of a socket wrench with an indicating scale, or an internal mechanism which will indicate (as by 'clicking', a specific movement of the tool handle in relation to the tool head) when a sp... | Technology | Measuring instruments | null |
361384 | https://en.wikipedia.org/wiki/Liquefied%20petroleum%20gas | Liquefied petroleum gas | Liquefied petroleum gas, also referred to as liquid petroleum gas (LPG or LP gas), is a fuel gas which contains a flammable mixture of hydrocarbon gases, specifically propane, n-butane and isobutane. It can sometimes contain some propylene, butylene, and isobutene.
LPG is used as a fuel gas in heating appliances, cook... | Technology | Fuel | null |
8943954 | https://en.wikipedia.org/wiki/China%20Railway%20High-speed | China Railway High-speed | China Railway High-speed (CRH) is a high-speed rail service operated by China Railway.
The introduction of CRH series was a major part of the sixth national railway speedup, implemented on April 18, 2007. By the end of 2020, China Railway High-speed provided service to all provinces in China, and operated just under ... | Technology | High-speed rail | null |
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