id int64 580 79M | url stringlengths 31 175 | text stringlengths 9 245k | source stringlengths 1 109 | categories stringclasses 160
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27,733,786 | https://en.wikipedia.org/wiki/Algorithmic%20complexity%20attack | An algorithmic complexity attack (ACA) is a form of attack in which an attacker sends a pattern of requests to a computer system that triggers the worst-case performance of the algorithms it uses. In turn, this may exhaust the resources the system uses. Examples of such attacks include ReDOS, zip bombs and exponential ... | Algorithmic complexity attack | Technology | 226 |
63,016,742 | https://en.wikipedia.org/wiki/PSAT-2 | PSAT-2 is an experimental amateur radio satellite from the U.S. Naval Academy, which was developed in collaboration with the Technical University of Brno in Brno, Czech Republic. AMSAT North America's OSCAR number administrator assigned number 104 to this satellite; in the amateur radio community it is therefore also c... | PSAT-2 | Astronomy | 271 |
5,828 | https://en.wikipedia.org/wiki/Cryptozoology | Cryptozoology is a pseudoscience and subculture that searches for and studies unknown, legendary, or extinct animals whose present existence is disputed or unsubstantiated, particularly those popular in folklore, such as Bigfoot, the Loch Ness Monster, Yeti, the chupacabra, the Jersey Devil, or the Mokele-mbembe. Cryp... | Cryptozoology | Biology | 4,403 |
945,780 | https://en.wikipedia.org/wiki/Bellcrank | A bellcrank is a type of crank that changes motion through an angle. The angle can range from 0 to 360 degrees, but 90-degree and 180-degree bellcranks are most common.
The name comes from its first use, changing the vertical pull on a rope to a horizontal pull on the striker of a bell to sound it.
Design
A typical 9... | Bellcrank | Physics,Engineering | 679 |
77,768,091 | https://en.wikipedia.org/wiki/Masaaki%20Morisita | (27 January 1913 - 25 February 1997) was a Japanese ecologist and professor emeritus of animal ecology at Kyoto University. He is known as the father of population ecology in Japan. Morisita's overlap index and Morisita's index of dispersion are named after him.
In addition to his work on statistical ecology, he also ... | Masaaki Morisita | Environmental_science | 390 |
617,003 | https://en.wikipedia.org/wiki/Autoradiograph | An autoradiograph is an image on an X-ray film or nuclear emulsion produced by the pattern of decay emissions (e.g., beta particles or gamma rays) from a distribution of a radioactive substance. Alternatively, the autoradiograph is also available as a digital image (digital autoradiography), due to the recent developme... | Autoradiograph | Chemistry,Biology | 1,594 |
592,687 | https://en.wikipedia.org/wiki/Network%20security | Network security are security controls, policies, processes and practices adopted to prevent, detect and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources. Network security involves the authorization of access to data in a network, which is controlled by... | Network security | Technology,Engineering | 1,278 |
36,847,391 | https://en.wikipedia.org/wiki/57%20Cygni | 57 Cygni is a close binary star system in the constellation Cygnus, located about 530 light years from Earth. It is visible to the naked eye as a blue-white hued star with a baseline apparent visual magnitude of 4.80. The pair have a magnitude difference of 0.34. This system is moving closer to the Earth with a helioce... | 57 Cygni | Astronomy | 213 |
13,056,002 | https://en.wikipedia.org/wiki/Saab%20Direct%20Ignition | Saab Direct Ignition is a capacitor discharge ignition developed by Saab Automobile, then known as Saab-Scania, and Mecel AB during the 1980s.
It was first shown in 1985 and put into series production in the Saab 9000 in 1988. One of the first instances of using the system was for a Formula Three racing engine (on B... | Saab Direct Ignition | Technology | 320 |
426,738 | https://en.wikipedia.org/wiki/Radar%20speed%20gun | A radar speed gun, also known as a radar gun, speed gun, or speed trap gun, is a device used to measure the speed of moving objects. It is commonly used by police to check the speed of moving vehicles while conducting traffic enforcement, and in professional sports to measure speeds such as those of baseball pitches, t... | Radar speed gun | Technology,Engineering | 2,681 |
70,449,944 | https://en.wikipedia.org/wiki/Legal%20gender | Legal gender, or legal sex, is a sex or gender that is recognized under the law. Biological sex, sex reassignment and gender identity are used to determine legal gender. The details vary by jurisdiction. Legal gender identity is fundamental to many legal rights and obligations, including access to healthcare, work, and... | Legal gender | Biology | 1,524 |
64,332,082 | https://en.wikipedia.org/wiki/2-Methoxyestriol | 2-Methoxyestriol (2-MeO-E3) is an endogenous estrogen metabolite. It is specifically a metabolite of estriol and 2-hydroxyestriol. It has negligible affinity for the estrogen receptors and no estrogenic activity. However, 2-methoxyestriol does have some non-estrogen receptor-mediated cholesterol-lowering effects.
See ... | 2-Methoxyestriol | Chemistry | 151 |
1,256,948 | https://en.wikipedia.org/wiki/Schilling%20test | The Schilling test was a medical investigation used for patients with vitamin B (cobalamin) deficiency. The purpose of the test was to determine how well a patient is able to absorb B12 from their intestinal tract. The test is now considered obsolete and is rarely performed, and is no longer available at many medical ... | Schilling test | Chemistry,Biology | 1,314 |
48,030,331 | https://en.wikipedia.org/wiki/NGC%206221 | NGC 6221 (also known as PGC 59175) is a barred spiral galaxy located in the constellation Ara. In de Vaucouleurs' galaxy morphological classification scheme, it is classified as SB(s)bc and was discovered by British astronomer John Herschel on 3 May 1835. NGC 6221 is located at about 69 million light years from Earth.
... | NGC 6221 | Astronomy | 255 |
16,502,684 | https://en.wikipedia.org/wiki/George%20M.%20Low%20Award | The George M. Low Award is an annual award given by NASA to its subcontractors in recognition of quality and performance. NASA characterizes it as a "premier award". NASA's chief of safety and mission assurance, Terrence Wilcutt, called it "our recognition for their management's leadership and employee commitment to th... | George M. Low Award | Engineering | 525 |
14,564,960 | https://en.wikipedia.org/wiki/Active%20metabolite | An active metabolite, or pharmacologically active metabolite is a biologically active metabolite of a xenobiotic substance, such as a drug or environmental chemical. Active metabolites may produce therapeutic effects, as well as harmful effects.
Metabolites of drugs
An active metabolite results when a drug is metabo... | Active metabolite | Chemistry,Biology | 356 |
63,449,981 | https://en.wikipedia.org/wiki/Davenport%E2%80%93Schinzel%20Sequences%20and%20Their%20Geometric%20Applications | Davenport–Schinzel Sequences and Their Geometric Applications is a book in discrete geometry. It was written by Micha Sharir and Pankaj K. Agarwal, and published by Cambridge University Press in 1995, with a paperback reprint in 2010.
Topics
Davenport–Schinzel sequences are named after Harold Davenport and Andrzej Sch... | Davenport–Schinzel Sequences and Their Geometric Applications | Mathematics | 596 |
14,947,222 | https://en.wikipedia.org/wiki/International%20Conference%20on%20Language%20Resources%20and%20Evaluation | The International Conference on Language Resources and Evaluation is an international conference organised by the ELRA Language Resources Association every other year (on even years) with the support of institutions and organisations involved in Natural language processing. The series of LREC conferences was launched i... | International Conference on Language Resources and Evaluation | Technology | 298 |
71,325,287 | https://en.wikipedia.org/wiki/4-Isopropenylphenol | 4-Isopropenylphenol is an organic compound with the formula . The molecule consists of a 2-propenyl group (CH2=C-CH3) affixed to the 4 position of phenol. The compound is an intermediate in the production of bisphenol A (BPA), 2.7 Mkg/y of which are produced annually (2007). It is also generated by the recycling of o... | 4-Isopropenylphenol | Chemistry | 215 |
57,721,868 | https://en.wikipedia.org/wiki/Mass-flux%20fraction | The mass-flux fraction (or Hirschfelder-Curtiss variable or Kármán-Penner variable) is the ratio of mass-flux of a particular chemical species to the total mass flux of a gaseous mixture. It includes both the convectional mass flux and the diffusional mass flux. It was introduced by Joseph O. Hirschfelder and Charles F... | Mass-flux fraction | Chemistry | 229 |
8,625,600 | https://en.wikipedia.org/wiki/Phytane | Phytane is the isoprenoid alkane formed when phytol, a chemical substituent of chlorophyll, loses its hydroxyl group. When phytol loses one carbon atom, it yields pristane. Other sources of phytane and pristane have also been proposed than phytol.
Pristane and phytane are common constituents in petroleum and have been... | Phytane | Chemistry | 2,098 |
26,883,388 | https://en.wikipedia.org/wiki/Antimicrobial%20copper-alloy%20touch%20surfaces | Antimicrobial copper-alloy touch surfaces can prevent frequently touched surfaces from serving as reservoirs for the spread of pathogenic microbes. This is especially true in healthcare facilities, where harmful viruses, bacteria, and fungi colonize and persist on doorknobs, push plates, handrails, tray tables, tap (fa... | Antimicrobial copper-alloy touch surfaces | Chemistry,Biology | 1,468 |
2,498,855 | https://en.wikipedia.org/wiki/Supermatrix | In mathematics and theoretical physics, a supermatrix is a Z2-graded analog of an ordinary matrix. Specifically, a supermatrix is a 2×2 block matrix with entries in a superalgebra (or superring). The most important examples are those with entries in a commutative superalgebra (such as a Grassmann algebra) or an ordinar... | Supermatrix | Physics,Mathematics | 2,261 |
3,510,274 | https://en.wikipedia.org/wiki/Centrosymmetry | In crystallography, a centrosymmetric point group contains an inversion center as one of its symmetry elements. In such a point group, for every point (x, y, z) in the unit cell there is an indistinguishable point (-x, -y, -z). Such point groups are also said to have inversion symmetry. Point reflection is a similar te... | Centrosymmetry | Physics,Mathematics | 530 |
31,443,389 | https://en.wikipedia.org/wiki/Zoghman%20Mebkhout | Zoghman Mebkhout (born 1949 ) (زغمان مبخوت) is a French-Algerian mathematician. He is known for his work in algebraic analysis, geometry and representation theory, more precisely on the theory of D-modules.
Career
Mebkhout is currently a research director at the French National Centre for Scientific Research and in 2... | Zoghman Mebkhout | Mathematics | 444 |
57,738,246 | https://en.wikipedia.org/wiki/Janez%20Lawson | Janez Yvonne Lawson Bordeaux (February 22, 1930 – November 24, 1990) was an American chemical engineer who became one of NASA's computers. She was the first African-American hired into a technical position at Jet Propulsion Laboratory. She programmed the IBM 701.
Early life and education
Lawson was born on February 2... | Janez Lawson | Technology | 384 |
77,371,907 | https://en.wikipedia.org/wiki/Caloboletus%20conifericola | Caloboletus conifericola, commonly known as the dark bitter bolete, is a species of mushroom in the family Boletaceae. It is found in the Pacific Northwest.
Taxonomy
Caloboletus conifericola was first described by Alfredo Vizzini in 2014.
Description
The cap of Caloboletus conifericola is grayish-brown to olive gra... | Caloboletus conifericola | Biology | 298 |
57,676,290 | https://en.wikipedia.org/wiki/NGC%203336 | NGC 3336 is a barred spiral galaxy located about 190 million light-years away in the constellation Hydra. It was discovered by astronomer John Herschel on March 24, 1835. NGC 3336 is a member of the Hydra Cluster.
One supernova has been observed in NGC 3336: SN1984S (type unknown, mag. 16.8) was discovered by Paul Wil... | NGC 3336 | Astronomy | 127 |
8,564,378 | https://en.wikipedia.org/wiki/Genesi | Genesi is an international group of technology and consulting companies in the United States, Mexico and Germany. It is most widely known for designing and manufacturing ARM architecture and Power ISA-based computing devices. The Genesi Group consists of Genesi USA Inc., Genesi Americas LLC, Genesi Europe UG, Red Efika... | Genesi | Technology | 723 |
3,214 | https://en.wikipedia.org/wiki/Amplifier%20figures%20of%20merit | In electronics, the figures of merit of an amplifier are numerical measures that characterize its properties and performance. Figures of merit can be given as a list of specifications that include properties such as gain, bandwidth, noise and linearity, among others listed in this article. Figures of merit are importan... | Amplifier figures of merit | Technology | 1,957 |
62,217,733 | https://en.wikipedia.org/wiki/Paul%20J.%20Tesar | Paul J. Tesar is an American developmental biologist. He is the Dr. Donald and Ruth Weber Goodman Professor of Innovative Therapeutics at Case Western Reserve University School of Medicine. His research is focused on regenerative medicine.
Early life and education
Tesar was born in Cleveland, Ohio. He graduated with ... | Paul J. Tesar | Biology | 389 |
981,655 | https://en.wikipedia.org/wiki/Integer%20square%20root | In number theory, the integer square root (isqrt) of a non-negative integer is the non-negative integer which is the greatest integer less than or equal to the square root of ,
For example,
Introductory remark
Let and be non-negative integers.
Algorithms that compute (the decimal representation of) run forever ... | Integer square root | Mathematics | 3,002 |
37,445,416 | https://en.wikipedia.org/wiki/AN/MSQ-35%20Bomb%20Scoring%20Central | The Reeves AN/MSQ-35 Bomb Scoring Central was a United States Air Force dual radar system with computerized plotting board. It was used by the 1st Combat Evaluation Group to evaluate the accuracy of Strategic Air Command bomber crews.
Description
The central had a 20 rpm Acquisition Radar System with a variable "fan-s... | AN/MSQ-35 Bomb Scoring Central | Physics | 598 |
31,737,675 | https://en.wikipedia.org/wiki/Omnitruncated%205-simplex%20honeycomb | In five-dimensional Euclidean geometry, the omnitruncated 5-simplex honeycomb or omnitruncated hexateric honeycomb is a space-filling tessellation (or honeycomb). It is composed entirely of omnitruncated 5-simplex facets.
The facets of all omnitruncated simplectic honeycombs are called permutahedra and can be positio... | Omnitruncated 5-simplex honeycomb | Physics,Chemistry,Materials_science | 445 |
26,561 | https://en.wikipedia.org/wiki/Rank%20%28linear%20algebra%29 | In linear algebra, the rank of a matrix is the dimension of the vector space generated (or spanned) by its columns. This corresponds to the maximal number of linearly independent columns of . This, in turn, is identical to the dimension of the vector space spanned by its rows. Rank is thus a measure of the "nondegener... | Rank (linear algebra) | Mathematics | 3,503 |
37,694 | https://en.wikipedia.org/wiki/Seed | In botany, a seed is a plant embryo and nutrient reserve enclosed in a seed coat, a protective outer covering called a testa. More generally, the term "seed" means anything that can be sown, which may include seed and husk or tuber. Seeds are the product of the ripened ovule, after the embryo sac is fertilized by sperm... | Seed | Biology | 10,530 |
515,770 | https://en.wikipedia.org/wiki/Refresh%20rate | The refresh rate, also known as vertical refresh rate or vertical scan rate in reference to terminology originating with the cathode-ray tubes (CRTs), is the number of times per second that a raster-based display device displays a new image. This is independent from frame rate, which describes how many images are store... | Refresh rate | Technology | 2,339 |
47,887,698 | https://en.wikipedia.org/wiki/HD%20175640 | HD 175640 is a star in the equatorial constellation of Aquila. It has an apparent visual magnitude of 6.20, which is bright enough to be visible to the naked eye under suitable seeing conditions. The star is located at a distance of approximately 516 light years as determined through parallax measurements. At that dist... | HD 175640 | Astronomy | 287 |
52,592,501 | https://en.wikipedia.org/wiki/Pyrithione | Pyrithione is the common name of an organosulfur compound with molecular formula , chosen as an abbreviation of pyridinethione, and found in the Persian shallot. It exists as a pair of tautomers, the major form being the thione 1-hydroxy-2(1H)-pyridinethione and the minor form being the thiol 2-mercaptopyridine N-oxid... | Pyrithione | Chemistry | 1,640 |
826,478 | https://en.wikipedia.org/wiki/Population%20viability%20analysis | Population viability analysis (PVA) is a species-specific method of risk assessment frequently used in conservation biology.
It is traditionally defined as the process that determines the probability that a population will go extinct within a given number of years.
More recently, PVA has been described as a marriage of... | Population viability analysis | Mathematics,Biology | 1,652 |
72,504,438 | https://en.wikipedia.org/wiki/R%20Trianguli | R Trianguli (abbreviated as R Tri) is a short-period oxygen-rich Mira variable in Triangulum with a period of 266.9 days, discovered by T. H. E. C. Espin in 1890. It is losing about , close to average for a short-period Mira variable. While most short-period Mira variables reside in the Galactic halo, R Trianguli is a ... | R Trianguli | Astronomy | 181 |
21,652 | https://en.wikipedia.org/wiki/Natural%20language%20processing | Natural language processing (NLP) is a subfield of computer science and especially artificial intelligence. It is primarily concerned with providing computers with the ability to process data encoded in natural language and is thus closely related to information retrieval, knowledge representation and computational lin... | Natural language processing | Technology | 6,609 |
56,469,937 | https://en.wikipedia.org/wiki/NGC%20522 | NGC 522, also occasionally referred to as PGC 5218 or UGC 970, is a spiral galaxy located approximately 122 million light-years from the Solar System in the constellation Pisces. It was discovered on 25 September 1862 by astronomer Heinrich Louis d'Arrest.
Observation history
D'Arrest discovered NGC 522 using his 11-... | NGC 522 | Astronomy | 274 |
18,494,818 | https://en.wikipedia.org/wiki/John%20Christopher%20Willis | John Christopher Willis FRS (20 February 1868 – 21 March 1958) was an English botanist known for his Age and Area hypothesis and criticism of natural selection.
Education
Born in Liverpool, he was educated at and University College, Liverpool (biology) and Gonville and Caius College, Cambridge (botany).
Career
In 18... | John Christopher Willis | Biology | 1,138 |
239,121 | https://en.wikipedia.org/wiki/Calculation | A calculation is a deliberate mathematical process that transforms one or more inputs into one or more outputs or results. The term is used in a variety of senses, from the very definite arithmetical calculation of using an algorithm, to the vague heuristics of calculating a strategy in a competition, or calculating th... | Calculation | Mathematics | 366 |
233,500 | https://en.wikipedia.org/wiki/Scramjet | A scramjet (supersonic combustion ramjet) is a variant of a ramjet airbreathing jet engine in which combustion takes place in supersonic airflow. As in ramjets, a scramjet relies on high vehicle speed to compress the incoming air forcefully before combustion (hence ramjet), but whereas a ramjet decelerates the air to ... | Scramjet | Technology | 7,281 |
47,668,419 | https://en.wikipedia.org/wiki/Xanthoconium%20purpureum | Xanthoconium purpureum is a species of bolete fungus in the genus Xanthoconium. It was described as new to science in 1962 by Wally Snell and Esther Dick in 1962. It is found in eastern North America, where it fruits under oak, sometimes in oak-pine forests.
See also
List of North American boletes
References
Externa... | Xanthoconium purpureum | Biology | 88 |
2,815,135 | https://en.wikipedia.org/wiki/Billion%20Electric | Billion Electric Co. Ltd. (Taiex: #3027), based in Taiwan, is an electronics company founded in 1973.
Their range of ADSL modem/routers were introduced into Australia in 2002. Since then, features have been added including 4 port switches, wireless, VoIP, and VPN termination.
See also
List of companies of Taiwan
Lis... | Billion Electric | Technology | 141 |
50,897,056 | https://en.wikipedia.org/wiki/VELCT | Velocity Energy-efficient and Link-aware Cluster-Tree (VELCT) is a cluster and tree-based topology management protocol for mobile wireless sensor networks (MWSNs).
See also
DCN
DCT
CIDT
References
Wireless networking | VELCT | Technology,Engineering | 50 |
13,478,498 | https://en.wikipedia.org/wiki/Digital%20Preservation%20Award | The Digital Preservation Award is an international award sponsored by the Digital Preservation Coalition. The award 'recognises the many new initiatives being undertaken in the challenging field of digital preservation'. It was inaugurated in 2004 and was initially presented as part of the Institute of ConservationCons... | Digital Preservation Award | Technology | 1,611 |
51,153,954 | https://en.wikipedia.org/wiki/Stuart%20Dalziel | Stuart Bruce Dalziel is a British and New Zealand fluid dynamicist. He is currently based at the Department of Applied Mathematics and Theoretical Physics at the University of Cambridge, where he has directed the GKB Laboratory since 1997. He was promoted to the rank of Professor in 2016.
Dalziel completed his PhD in ... | Stuart Dalziel | Chemistry | 136 |
30,443,699 | https://en.wikipedia.org/wiki/PANDIT%20%28database%29 | PANDIT is a database of multiple sequence alignments and phylogenetic trees covering many common protein domains.
See also
Pfam: database of protein domains
Phylogeny
Sequence alignment
References
External links
http://www.ebi.ac.uk/goldman-srv/pandit
Biological databases
Computational phylogenetics
Genetics in... | PANDIT (database) | Biology | 78 |
39,536,084 | https://en.wikipedia.org/wiki/Bruce%20Sagan | Bruce Eli Sagan (born March 29, 1954) is an American Professor of Mathematics at Michigan State University. He specializes in enumerative, algebraic, and topological combinatorics. He is also known as a musician, playing music from Scandinavia and the Balkans.
Early life
Sagan is the son of Eugene Benjamin Sagan and... | Bruce Sagan | Mathematics | 1,086 |
1,545,816 | https://en.wikipedia.org/wiki/Leslie%20matrix | The Leslie matrix is a discrete, age-structured model of population growth that is very popular in population ecology named after Patrick H. Leslie. The Leslie matrix (also called the Leslie model) is one of the most well-known ways to describe the growth of populations (and their projected age distribution), in which ... | Leslie matrix | Mathematics | 944 |
19,858 | https://en.wikipedia.org/wiki/Model%20theory | In mathematical logic, model theory is the study of the relationship between formal theories (a collection of sentences in a formal language expressing statements about a mathematical structure), and their models (those structures in which the statements of the theory hold). The aspects investigated include the number ... | Model theory | Mathematics | 8,370 |
39,108,743 | https://en.wikipedia.org/wiki/TecTile | TecTiles are a near field communication (NFC) application, developed by Samsung, for use with mobile smartphone devices.
Each TecTile is a low-cost self-adhesive sticker with an embedded NFC Tag. They are programmed before use, which can be done simply by the user, using a downloadable Android app.
When an NFC-capabl... | TecTile | Technology,Engineering | 1,518 |
43,341,230 | https://en.wikipedia.org/wiki/Bullet%20Group | The Bullet Group (SL2S J08544-0121) is a newly merging group of galaxies, a merger between two galaxy groups to form a new larger one, that recently had a high speed collision between the two component groups. The group exhibits separation between its dark matter and baryonic matter components. The galaxies occur in tw... | Bullet Group | Physics,Astronomy | 287 |
30,788,710 | https://en.wikipedia.org/wiki/BARON | BARON is a computational system for solving non-convex optimization problems to global optimality. Purely continuous, purely integer, and mixed-integer nonlinear problems can be solved by the solver. Linear programming (LP), nonlinear programming (NLP), mixed integer programming (MIP), and mixed integer nonlinear pro... | BARON | Mathematics | 230 |
1,789,812 | https://en.wikipedia.org/wiki/Bounded%20set%20%28topological%20vector%20space%29 | In functional analysis and related areas of mathematics, a set in a topological vector space is called bounded or von Neumann bounded, if every neighborhood of the zero vector can be inflated to include the set.
A set that is not bounded is called unbounded.
Bounded sets are a natural way to define locally convex pol... | Bounded set (topological vector space) | Mathematics | 2,159 |
350,238 | https://en.wikipedia.org/wiki/Trichome | Trichomes (; ) are fine outgrowths or appendages on plants, algae, lichens, and certain protists. They are of diverse structure and function. Examples are hairs, glandular hairs, scales, and papillae. A covering of any kind of hair on a plant is an indumentum, and the surface bearing them is said to be pubescent.
Alga... | Trichome | Biology | 2,986 |
55,803,461 | https://en.wikipedia.org/wiki/Agrocybe%20sororia | Agrocybe sororia is a species of Basidiomycota mushroom in the genus Agrocybe.
The cap is convex to plane, tawny fading to pale yellow-buff; and is sometimes cracked, or wrinkled. It is 5-10 cm in diameter and non-hygrophanous.
The gills have an adnate attachment to the stipe. They are 2-5 mm thick and white when ... | Agrocybe sororia | Biology | 324 |
30,876,641 | https://en.wikipedia.org/wiki/Human%20skull%20symbolism | Skull symbolism is the attachment of symbolic meaning to the human skull. The most common symbolic use of the skull is as a representation of death.
Humans can often recognize the buried fragments of an only partially revealed cranium even when other bones may look like shards of stone. The human brain has a specific ... | Human skull symbolism | Mathematics | 2,653 |
66,577 | https://en.wikipedia.org/wiki/Tropics | The tropics are the regions of Earth surrounding the Equator, where the sun may shine directly overhead. This contrasts with the temperate or polar regions of Earth, where the Sun can never be directly overhead. This is because of Earth's axial tilt; the width of the tropics (in latitude) is twice the tilt. The tropics... | Tropics | Physics | 1,884 |
4,197,478 | https://en.wikipedia.org/wiki/Greenville%20Memorial%20Auditorium | Greenville Memorial Auditorium was a 7,500-seat multi-purpose arena built in 1958 that was located in Greenville, South Carolina. It hosted local sporting events, concerts and the Ringling Brothers Circus until the Bon Secours Wellness Arena opened in 1998.
It hosted professional wrestling throughout its history, espe... | Greenville Memorial Auditorium | Engineering | 230 |
177,206 | https://en.wikipedia.org/wiki/VoiceXML | VoiceXML (VXML) is a digital document standard for specifying interactive media and voice dialogs between humans and computers. It is used for developing audio and voice response applications, such as banking systems and automated customer service portals. VoiceXML applications are developed and deployed in a manner an... | VoiceXML | Technology | 1,414 |
33,938,182 | https://en.wikipedia.org/wiki/Phylloporus%20scabripes | Phylloporus scabripes is a species of bolete fungus in the family Boletaceae. Found in Belize on sandy soil under Quercus spp. and Pinus caribaea, it was described as new to science in 2007.
References
External links
scabripes
Fungi described in 2007
Fungi of Central America
Fungus species | Phylloporus scabripes | Biology | 70 |
58,474,050 | https://en.wikipedia.org/wiki/List%20of%20fireworks%20accidents%20and%20incidents%20in%20Sivakasi | Sivakasi is a town in Virudhunagar District in the Indian state of Tamil Nadu. The town is known for its firecracker, matchbox and printing industries. The industries in Sivakasi employ over 250,000 people with an estimated turn over of . The major issues in the fireworks industry in Sivakasi are child labour and frequ... | List of fireworks accidents and incidents in Sivakasi | Chemistry | 790 |
30,007,269 | https://en.wikipedia.org/wiki/Pencil-beam%20scanning | Pencil beam scanning is the practice of steering a beam of radiation or charged particles across an object. It is often used in proton therapy, to reduce unnecessary radiation exposure to surrounding non-cancerous cells.
Ionizing radiation
Ionizing radiation photons or x-rays (IMRT) use pencil beam scanning to precis... | Pencil-beam scanning | Physics,Chemistry,Biology | 232 |
5,497,456 | https://en.wikipedia.org/wiki/Kinetic%20resolution | In organic chemistry, kinetic resolution is a means of differentiating two enantiomers in a racemic mixture. In kinetic resolution, two enantiomers react with different reaction rates in a chemical reaction with a chiral catalyst or reagent, resulting in an enantioenriched sample of the less reactive enantiomer. As op... | Kinetic resolution | Physics,Chemistry | 6,390 |
24,253,774 | https://en.wikipedia.org/wiki/Rossmo%27s%20formula | Rossmo's formula is a geographic profiling formula to predict where a serial criminal lives. It relies upon the tendency of criminals to not commit crimes near places where they might be recognized, but also to not travel excessively long distances. The formula was developed and patented in 1996 by criminologist Kim R... | Rossmo's formula | Physics | 689 |
34,198,843 | https://en.wikipedia.org/wiki/SnapTag | SnapTag, invented by SpyderLynk, is a 2D mobile barcode alternative similar to a QR code, but that uses an icon or company logo and code ring rather than a square pattern of black dots.
Similar to a QR code, SnapTags can be used to take consumers to a brand’s website, but can also facilitate mobile purchases, coupon d... | SnapTag | Technology | 209 |
76,390,321 | https://en.wikipedia.org/wiki/Erbium%20iodate | Erbium iodate is an inorganic compound with the chemical formula Er(IO3)3.
Preparation
Erbium iodate can be obtained by reacting erbium periodate and periodic acid in water at 160 °C. The reaction will produce anhydrous and dihydrate crystals.
Properties
Erbium iodate dihydrate is stable below 266 °C, loses two m... | Erbium iodate | Chemistry | 110 |
9,728,495 | https://en.wikipedia.org/wiki/Popcorn%20ceiling | A popcorn ceiling, also known as a stipple ceiling or acoustic ceiling, is a ceiling with one of a variety of spray-on or paint-on treatments. The bumpy surface is created by tiny particles of vermiculite or polystyrene, which gives the ceiling sound-deadening properties. Mixtures are available in fine, medium, and coa... | Popcorn ceiling | Engineering | 375 |
48,640,009 | https://en.wikipedia.org/wiki/Complete%20active%20space%20perturbation%20theory | Complete active space perturbation theory (CASPTn) is a multireference electron correlation method for computational investigation of molecular systems, especially for those with heavy atoms such as transition metals, lanthanides, and actinides. It can be used, for instance, to describe electronic states of a system, w... | Complete active space perturbation theory | Physics,Chemistry | 620 |
1,236,765 | https://en.wikipedia.org/wiki/Blutfahne | The Blutfahne (), or Blood Flag, is or was a Nazi Party swastika flag that was carried during the attempted coup d'état Beer Hall Putsch in Munich, Germany on 9 November 1923, during which it became soaked in the blood of one of the SA men who died. It subsequently became one of the most revered objects of the Nazi Par... | Blutfahne | Physics | 928 |
20,445,622 | https://en.wikipedia.org/wiki/Geography%20of%20Halloween | Halloween is a celebration observed on October 31, the day before the feast of All Hallows, also known as Hallowmas or All Saint's Day. The celebrations and observances of this day occur primarily in regions of the Western world, albeit with some traditions varying significantly between geographical areas.
Origins
Hal... | Geography of Halloween | Environmental_science | 6,151 |
29,405,962 | https://en.wikipedia.org/wiki/Clathrus%20chrysomycelinus | Clathrus chrysomycelinus is a species of fungus in the stinkhorn family. It is found in South America and reported from New Zealand, although the equivalence of the species is yet to be determined.
References
Phallales
Fungi of South America
Fungi described in 1898
Fungus species | Clathrus chrysomycelinus | Biology | 59 |
63,470,073 | https://en.wikipedia.org/wiki/NGC%20542 | NGC 542 is a spiral galaxy in the constellation Andromeda, which is approximately 215 million light years from the Milky Way. Together with the galaxies NGC 529, NGC 531, and NGC 536, it forms the Hickson Compact Group 10, abbreviated HCG 10. It was discovered by Irish astronomer R.J. Mitchell in 1885.
See also
List... | NGC 542 | Astronomy | 100 |
62,072,493 | https://en.wikipedia.org/wiki/Chloroflexus%20islandicus | Chloroflexus islandicus is a photosynthetic bacterium isolated from the Strokkur Geyser in Iceland. This organism is thermophilic showing optimal growth at 55 °C (131 °F) with a pH range of 7.5 – 7.7. C. islandicus grows best photoheterotrophically under anaerobic conditions with light but is capable of chemoheterotrop... | Chloroflexus islandicus | Chemistry,Biology | 488 |
54,551,486 | https://en.wikipedia.org/wiki/Super-resolution%20dipole%20orientation%20mapping | Super-resolution dipole orientation mapping (SDOM) is a form of fluorescence polarization microscopy (FPM) that achieved super resolution through polarization demodulation. It was first described by Karl Zhanghao and others in 2016. Fluorescence polarization (FP) is related to the dipole orientation of chromophores, m... | Super-resolution dipole orientation mapping | Chemistry | 2,049 |
246,043 | https://en.wikipedia.org/wiki/Kindness | Kindness is a type of behavior marked by acts of generosity, consideration, rendering assistance, or concern for others, without expecting praise or reward in return. It is a subject of interest in philosophy, religion, and psychology.
In Book II of Rhetoric, Aristotle defines kindness as "helpfulness towards someone ... | Kindness | Biology | 573 |
40,518,464 | https://en.wikipedia.org/wiki/Grouted%20roof | A grouted roof is a form of slate roof. It has developed as a form of vernacular architecture associated with the West coast of the British Isles.
A grouted roof is distinguished by having an overall coat of a cementitious render.
Conventional slate roofs
A conventional slate roof consists of thin slates, hung over... | Grouted roof | Technology,Engineering | 1,676 |
17,141,740 | https://en.wikipedia.org/wiki/Radio%20art | Radio art is an aural art form that uses radio technology (i.e. radio transmission, airwaves) to transmit sound.
Scope
Radio Art contributes to new media art - a digitally driven art movement growing in response to the informative technological revolution we live in. “From the artist's point of view radio is an envir... | Radio art | Technology | 659 |
52,332,469 | https://en.wikipedia.org/wiki/Polyporus%20ciliatus | Polyporus ciliatus is a species of fungus in the genus Polyporus.
References
External links
ciliatus
Fungus species | Polyporus ciliatus | Biology | 28 |
1,529,106 | https://en.wikipedia.org/wiki/Full-sky%20Astrometric%20Mapping%20Explorer | Full-sky Astrometric Mapping Explorer (or FAME) was a NASA proposed astrometric satellite designed to determine with unprecedented accuracy the positions, distances, and motions of 40 million stars within our galactic neighborhood (distances by stellar parallax possible). This database was to allow astronomers to accur... | Full-sky Astrometric Mapping Explorer | Astronomy | 341 |
26,339,316 | https://en.wikipedia.org/wiki/Echinopsidine | Echinopsidine (Adepren) is an antidepressant that was under development in Bulgaria for the treatment of depression. It increases serotonin, norepinephrine, and dopamine levels in the brain and is believed to act as a monoamine oxidase inhibitor (MAOI). Echinopsidine is found naturally in Echinops echinatus along with ... | Echinopsidine | Chemistry | 116 |
10,040,846 | https://en.wikipedia.org/wiki/Random%20measure | In probability theory, a random measure is a measure-valued random element. Random measures are for example used in the theory of random processes, where they form many important point processes such as Poisson point processes and Cox processes.
Definition
Random measures can be defined as transition kernels or as ra... | Random measure | Physics,Mathematics | 668 |
25,431,009 | https://en.wikipedia.org/wiki/Fundamental%20lemma%20%28Langlands%20program%29 | In the mathematical theory of automorphic forms, the fundamental lemma relates orbital integrals on a reductive group over a local field to stable orbital integrals on its endoscopic groups. It was conjectured by in the course of developing the Langlands program. The fundamental lemma was proved by Gérard Laumon and... | Fundamental lemma (Langlands program) | Mathematics | 880 |
792,022 | https://en.wikipedia.org/wiki/United%20Nations%20Information%20and%20Communication%20Technologies%20Task%20Force | The United Nations Information and Communication Technologies Task Force (UN ICT TF) was a multi-stakeholder initiative associated with the United Nations which is "intended to lend a truly global dimension to the multitude of efforts to bridge the global digital divide, foster digital opportunity and thus firmly put I... | United Nations Information and Communication Technologies Task Force | Technology | 3,023 |
7,339,097 | https://en.wikipedia.org/wiki/MPEG%20program%20stream | Program stream (PS or MPEG-PS) is a container format for multiplexing digital audio, video and more. The PS format is specified in MPEG-1 Part 1 (ISO/IEC 11172-1) and MPEG-2 Part 1, Systems (ISO/IEC standard 13818-1/ITU-T H.222.0). The MPEG-2 Program Stream is analogous and similar to ISO/IEC 11172 Systems layer and it... | MPEG program stream | Technology | 505 |
46,552,772 | https://en.wikipedia.org/wiki/LG%20G4 | The LG G4 is an Android smartphone developed by LG Electronics as part of the LG G series. Unveiled on 28 April 2015 and first released in South Korea on 29 April 2015 and widely released in June 2015, as the successor to 2014's G3. The G4 is primarily an evolution of the G3, with revisions to its overall design, displ... | LG G4 | Technology | 1,672 |
18,332,975 | https://en.wikipedia.org/wiki/Giant%20resonance | In nuclear physics, giant resonance is a high-frequency collective excitation of atomic nuclei, as a property of many-body quantum systems. In the macroscopic interpretation of such an excitation in terms of an oscillation, the most prominent giant resonance is a collective oscillation of all protons against all neutro... | Giant resonance | Physics | 481 |
7,710,343 | https://en.wikipedia.org/wiki/Land%20banking | Land banking is the practice of aggregating parcels of land for future sale or development.
While in many countries land banking may refer to various private real estate investment schemes, in the United States it refers to the establishment of quasi-governmental county or municipal authorities tasked with managing an... | Land banking | Engineering | 3,029 |
25,617,311 | https://en.wikipedia.org/wiki/Kansas%20Building%20Science%20Institute | The Kansas Building Science Institute is a vocational school located in Manhattan, Kansas. The Institute conducts week-long Home Energy Rater Trainings (HERS) as well as Building Performance Index (BPI) and Weatherization (WX) Trainings, among others.
Training center
The Institute conducts trainings in a multi-purpos... | Kansas Building Science Institute | Engineering | 146 |
38,523,559 | https://en.wikipedia.org/wiki/Mohammad%20Javad%20Tondguyan | Mohammad Javad Bagher Tondguyan (; 16 June 1950 – 16 December 1991) was an Iranian engineer and petroleum minister under Prime Minister Mohammad-Ali Rajai from 2 September to 3 November 1980 when he was captured by the Iraqi forces in November 1980 during Iran-Iraq war.
Early life and education
Tondguyan was born in T... | Mohammad Javad Tondguyan | Engineering | 563 |
4,468,819 | https://en.wikipedia.org/wiki/Urea%20phosphate | Urea phosphate is a 1:1 combination of urea and phosphoric acid that is used as a fertilizer. It has an NPK formula of 17-44-0, and is soluble in water, producing a strongly acidic solution.
Urea phosphate is available in fertilizer vendor bags that carry a UP signet on the packaging. It is sometimes added to blends w... | Urea phosphate | Chemistry | 272 |
18,164,717 | https://en.wikipedia.org/wiki/Osmium%28IV%29%20chloride | Osmium(IV) chloride or osmium tetrachloride is the inorganic compound composed of osmium and chlorine with the empirical formula OsCl4. It exists in two polymorphs (crystalline forms). The compound is used to prepare other osmium complexes.
Preparation, structure, reactions
It was first reported in 1909 as the produc... | Osmium(IV) chloride | Chemistry | 254 |
59,818,585 | https://en.wikipedia.org/wiki/BD%20Phoenicis | BD Phoenicis is a variable star in the constellation of Phoenix. From parallax measurements by the Gaia spacecraft, it is located at a distance of from Earth. Its absolute magnitude is calculated at 1.5.
Description
BD Phoenicis is a Lambda Boötis star, an uncommon type of peculiar stars that have very low abundances... | BD Phoenicis | Astronomy | 429 |
21,394,895 | https://en.wikipedia.org/wiki/Tarski%27s%20high%20school%20algebra%20problem | In mathematical logic, Tarski's high school algebra problem was a question posed by Alfred Tarski. It asks whether there are identities involving addition, multiplication, and exponentiation over the positive integers that cannot be proved using eleven axioms about these operations that are taught in high-school-level... | Tarski's high school algebra problem | Mathematics | 953 |
32,761,768 | https://en.wikipedia.org/wiki/Scaffold/matrix%20attachment%20region | The term S/MAR (scaffold/matrix attachment region), otherwise called SAR (scaffold-attachment region), or MAR (matrix-associated region), are sequences in the DNA of eukaryotic chromosomes where the nuclear matrix attaches. As architectural DNA components that organize the genome of eukaryotes into functional units wit... | Scaffold/matrix attachment region | Chemistry,Biology | 1,252 |
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