id int64 580 79M | url stringlengths 31 175 | text stringlengths 9 245k | source stringlengths 1 109 | categories stringclasses 160
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24,129,233 | https://en.wikipedia.org/wiki/Unit%20doublet | In mathematics, the unit doublet is the derivative of the Dirac delta function. It can be used to differentiate signals in electrical engineering: If u1 is the unit doublet, then
where is the convolution operator.
The function is zero for all values except zero, where its behaviour is interesting. Its integral o... | Unit doublet | Mathematics | 152 |
1,711,336 | https://en.wikipedia.org/wiki/Ap%C3%A9ry%27s%20theorem | In mathematics, Apéry's theorem is a result in number theory that states the Apéry's constant ζ(3) is irrational. That is, the number
cannot be written as a fraction where p and q are integers. The theorem is named after Roger Apéry.
The special values of the Riemann zeta function at even integers () can be shown i... | Apéry's theorem | Mathematics | 1,104 |
25,920,713 | https://en.wikipedia.org/wiki/Official%20community%20plan | In Canada, an official community plan is a comprehensive plan created by an incorporated municipality which dictates public policy in terms of transportation, utilities, land use, recreation, and housing. OCPs typically encompass large geographical areas, a broad range of topics, and cover a long-term time horizon. The... | Official community plan | Engineering | 405 |
16,936,273 | https://en.wikipedia.org/wiki/Kappadione | Kappadione is a vitamin K derivative used for the treatment of side effects of vitamin K antagonists such as warfarin, prophylaxis and treatment of vitamin K deficiency bleeding, and hypoprothrombinemia due to various causes. It was manufactured by Eli Lilly and Company. Chemically, it is menadiol sodium diphosphate. I... | Kappadione | Chemistry | 128 |
66,683,662 | https://en.wikipedia.org/wiki/ABL%20Space%20Systems | ABL Space Systems is an American aerospace and launch service provider, based in El Segundo, California, that manufactures deployable launch vehicles and infrastructure for missile defense, formerly for sending commercial small satellites into orbit. The company manufactures its components in the United States.
ABL S... | ABL Space Systems | Technology | 402 |
49,748,838 | https://en.wikipedia.org/wiki/DcuC%20family | The C4-dicarboxylate uptake C family or DcuC family (TC# 2.A.61) is a family of transmembrane ion transporters found in bacteria. A representative list of proteins belonging to the DcuC family can be found in the Transporter Classification Database.
An anaerobic C4-dicarboxylate transporter (DcuC) of E. coli (TC# 2.A.... | DcuC family | Biology | 341 |
31,764,761 | https://en.wikipedia.org/wiki/Act%20as%201%20Campaign | Act as 1 was a domestic violence prevention campaign led by the Queensland Government in Australia. The campaign contained the core message that domestic violence and family violence affect women, men, children, families, neighbours, workplaces and communities and is estimated to cost the Queensland economy $2.7 to $3... | Act as 1 Campaign | Biology | 278 |
56,102,852 | https://en.wikipedia.org/wiki/Vitasti | A vitasti (, ) is an ancient Indian unit of length approximating to 21 centimeters.
Etymology
The Sanskrit word vitasti, meaning "span", is an ancient Indo-Iranian term. It is derived from the Proto-Indo-Iranian term *witasti- and is related to Avestan vītasti, Kurdish bist and Persian bidast, all meaning "span".
Mea... | Vitasti | Mathematics | 232 |
1,140,830 | https://en.wikipedia.org/wiki/Consistency%20%28database%20systems%29 | In database systems, consistency (or correctness) refers to the requirement that any given database transaction must change affected data only in allowed ways. Any data written to the database must be valid according to all defined rules, including constraints, cascades, triggers, and any combination thereof. This doe... | Consistency (database systems) | Technology | 416 |
17,633,579 | https://en.wikipedia.org/wiki/Topological%20combinatorics | The mathematical discipline of topological combinatorics is the application of topological and algebro-topological methods to solving problems in combinatorics.
History
The discipline of combinatorial topology used combinatorial concepts in topology and in the early 20th century this turned into the field of algebrai... | Topological combinatorics | Physics,Mathematics | 340 |
5,026,180 | https://en.wikipedia.org/wiki/Nu%20Canis%20Majoris | The Bayer designation Nu Canis Majoris (ν CMa / ν Canis Majoris) is shared by three star systems, in the constellation Canis Major:
ν1 Canis Majoris
ν2 Canis Majoris
ν3 Canis Majoris
They are separated by the different asterism in Chinese astronomy. ν1 Canis Majoris was not any member of asterism. ν2 Canis Majoris ... | Nu Canis Majoris | Astronomy | 150 |
3,396,190 | https://en.wikipedia.org/wiki/Pinch%20%28unit%29 | A pinch is a small, indefinite amount of a substance, typically a powder like salt, sugar, spice, or snuff. It is the "amount that can be taken between the thumb and forefinger".
Some manufacturers of measuring spoons and some U.S. cookbooks give more precise equivalents, typically US customary teaspoon; some source... | Pinch (unit) | Mathematics | 195 |
15,294,203 | https://en.wikipedia.org/wiki/Paragyromitra%20ambigua | Paragyromitra ambigua is an ascomycete species of fungus in the family Discinaceae, and related to the false morel G. esculenta. The species is found in North America, where it produces fruit bodies (mushrooms) that grow on the ground. The edibility of the fruit bodies is not known with certainty, and it is not recomme... | Paragyromitra ambigua | Biology | 122 |
58,832,892 | https://en.wikipedia.org/wiki/XZ%20Andromedae | XZ Andromedae (also known as XZ And) is a binary star in the constellation Andromeda. Its maximum apparent visual magnitude is 9.91, but drops down to 12.45 every 1.357 days. Its variability matches the behaviour of Algol variable stars.
System
The primary star of the system has a mass of 3.2 and has a spectral type ... | XZ Andromedae | Astronomy | 436 |
49,214,865 | https://en.wikipedia.org/wiki/Pholiota%20marthae | Pholiota marthae is a species of agaric fungus in the family Strophariaceae. Found in Argentina, it was described as new to science by mycologist Rolf Singer in 1969.
See also
List of Pholiota species
References
External links
Fungi described in 1969
Fungi of Argentina
Strophariaceae
Taxa named by Rolf Singer
Fungu... | Pholiota marthae | Biology | 72 |
1,255,277 | https://en.wikipedia.org/wiki/Figure%E2%80%93ground%20%28perception%29 | Figure–ground organization is a type of perceptual grouping that is a vital necessity for recognizing objects through vision. In Gestalt psychology it is known as identifying a figure from the background. For example, black words on a printed paper are seen as the "figure", and the white sheet as the "background".
Ges... | Figure–ground (perception) | Physics,Engineering,Biology | 1,725 |
49,817,168 | https://en.wikipedia.org/wiki/Germanium-vacancy%20center%20in%20diamond | The germanium-vacancy center (Ge-V) is an optically active defect in diamond, which can be created by doping germanium into diamond during its growth or by implanting germanium ions into diamond after its growth. Its properties are similar to those of the silicon-vacancy center in diamond (SiV). Ge-V can behave as a si... | Germanium-vacancy center in diamond | Physics,Chemistry,Materials_science,Engineering | 287 |
76,556,199 | https://en.wikipedia.org/wiki/Urinary%20anti-infective%20agent | Urinary anti-infective agent, also known as urinary antiseptic, is medication that can eliminate microorganisms causing urinary tract infection (UTI). UTI can be categorized into two primary types: cystitis, which refers to lower urinary tract or bladder infection, and pyelonephritis, which indicates upper urinary trac... | Urinary anti-infective agent | Biology | 2,863 |
379,234 | https://en.wikipedia.org/wiki/Sensory%20nervous%20system | The sensory nervous system is a part of the nervous system responsible for processing sensory information. A sensory system consists of sensory neurons (including the sensory receptor cells), neural pathways, and parts of the brain involved in sensory perception and interoception. Commonly recognized sensory systems... | Sensory nervous system | Biology | 3,291 |
77,207,305 | https://en.wikipedia.org/wiki/AF-353 | AF-353 is a drug which acts as an antagonist of the P2X3 homotrimeric and P2X2/3 heterotrimeric forms of the P2X purinoreceptors. It has been found to block taste responses and has been proposed as an agent for masking the bitter taste of medications.
See also
PPADS
References
Pyrimidines
Hydroquinones
Iodoarenes... | AF-353 | Chemistry | 100 |
4,061,767 | https://en.wikipedia.org/wiki/Heaviside%E2%80%93Lorentz%20units | Heaviside–Lorentz units (or Lorentz–Heaviside units) constitute a system of units and quantities that extends the CGS with a particular set of equations that defines electromagnetic quantities, named for Oliver Heaviside and Hendrik Antoon Lorentz. They share with the CGS-Gaussian system that the electric constant and... | Heaviside–Lorentz units | Physics | 1,939 |
1,008,247 | https://en.wikipedia.org/wiki/Klenow%20fragment | The Klenow fragment is a large protein fragment produced when DNA polymerase I from E. coli is enzymatically cleaved by the protease subtilisin. First reported in 1970, it retains the 5' → 3' polymerase activity and the 3’ → 5’ exonuclease activity for removal of precoding nucleotides and proofreading, but loses its 5... | Klenow fragment | Biology | 556 |
18,937,540 | https://en.wikipedia.org/wiki/Technical%20Service%20Council | The Technical Service Council was set up to combat the "brain drain" of Canadian engineers to the United States, when over 20% of the graduating classes were emigrating. Ireland, India, New Zealand and even Switzerland have had similar problems.
In 1927, Canadian industry financed the council, whose directors conclud... | Technical Service Council | Engineering | 2,725 |
31,837,770 | https://en.wikipedia.org/wiki/Urban%20resilience | Urban resilience is defined as the "measurable ability of any urban system, with its inhabitants, to maintain continuity through all shocks and stresses, while positively adapting and transforming towards sustainability". It has conventionally been used to describe the change in structure and function of urban areas. U... | Urban resilience | Engineering | 6,196 |
33,584,199 | https://en.wikipedia.org/wiki/Comet%20Swift%E2%80%93Tuttle | Comet Swift–Tuttle (formally designated 109P/Swift–Tuttle) is a large periodic comet with a 1995 (osculating) orbital period of 133 years that is in a 1:11 orbital resonance with Jupiter. It fits the classical definition of a Halley-type comet, which has an orbital period between 20 and 200 years. The comet was indepen... | Comet Swift–Tuttle | Astronomy | 1,060 |
391,830 | https://en.wikipedia.org/wiki/Groklaw | Groklaw was a website that covered legal news of interest to the free and open source software community. Started as a law blog on May 16, 2003, by paralegal Pamela Jones ("PJ"), it covered issues such as the SCO-Linux lawsuits, the EU antitrust case against Microsoft, and the standardization of Office Open XML.
Jones... | Groklaw | Technology | 2,639 |
637,198 | https://en.wikipedia.org/wiki/Great%20Smoky%20Mountains | The Great Smoky Mountains (, Equa Dutsusdu Dodalv) are a mountain range rising along the Tennessee–North Carolina border in the southeastern United States. They are a subrange of the Appalachian Mountains and form part of the Blue Ridge Physiographic Province. The range is sometimes called the Smoky Mountains, and the ... | Great Smoky Mountains | Biology | 7,274 |
50,961,871 | https://en.wikipedia.org/wiki/Candida%20humilis | Kazachstania humilis (prev. Candida humilis) is a species of yeast in the genus Kazachstania. It commonly occurs in sourdough and kefir cultures, along with different species of lactic acid bacteria (e.g., Limosilactobacillus fermentum, Companilactobacillus paralimentarius, Lactiplantibacillus plantarum, and Fructilact... | Candida humilis | Biology | 209 |
52,505,750 | https://en.wikipedia.org/wiki/Negative%20testing | Negative testing is a method of testing an application or system to improve the likelihood that an application works as intended/specified and can handle unexpected input and user behavior. Invalid data is inserted to compare the output against the given input. Negative testing is also known as failure testing or error... | Negative testing | Engineering | 666 |
55,273,827 | https://en.wikipedia.org/wiki/NGC%206753 | NGC 6753 is a massive unbarred spiral galaxy, seen almost exactly face-on, in the southern constellation of Pavo. It was discovered by the English astronomer John Herschel on July 5, 1836. The galaxy is located at a distance of 142 million light years from the Milky Way, and is receding with a heliocentric radial veloc... | NGC 6753 | Astronomy | 428 |
1,265,819 | https://en.wikipedia.org/wiki/American%20Megatrends | American Megatrends International, LLC, doing business as AMI, is an international hardware and software company, specializing in PC hardware and firmware. The company was founded in 1985 by Pat Sarma and Subramonian Shankar. It is headquartered in Building 800 at 3095 Satellite Boulevard in unincorporated Gwinnett Cou... | American Megatrends | Technology | 2,217 |
13,568,942 | https://en.wikipedia.org/wiki/Prometon | Prometon is a herbicide for annual and perennial broad-leaf weed, brush and grass control mainly in non-cropping situations.
References
Prometon Risk Assessments; Notice of Availability, and Risk Reduction Options. Federal Register: November 7, 2007 (Volume 72, Number 215)
Scorecard – CHEMICAL PROFILES – Chemical Pro... | Prometon | Biology | 96 |
48,489 | https://en.wikipedia.org/wiki/Magic%20%28supernatural%29 | Magic, sometimes spelled magick, is the application of beliefs, rituals or actions employed in the belief that they can manipulate natural or supernatural beings and forces. It is a category into which have been placed various beliefs and practices sometimes considered separate from both religion and science.
Connotat... | Magic (supernatural) | Biology | 13,024 |
39,324,002 | https://en.wikipedia.org/wiki/Relict%20%28biology%29 | In biogeography and paleontology, a relict is a population or taxon of organisms that was more widespread or more diverse in the past. A relictual population is a population currently inhabiting a restricted area whose range was far wider during a previous geologic epoch. Similarly, a relictual taxon is a taxon (e.g. s... | Relict (biology) | Biology | 1,549 |
32,590,824 | https://en.wikipedia.org/wiki/Continuous%20geometry | In mathematics, continuous geometry is an analogue of complex projective geometry introduced by , where instead of the dimension of a subspace being in a discrete set , it can be an element of the unit interval . Von Neumann was motivated by his discovery of von Neumann algebras with a dimension function taking a cont... | Continuous geometry | Mathematics | 1,202 |
53,345,935 | https://en.wikipedia.org/wiki/Asynchronous%20procedure%20call | An asynchronous procedure call (APC) is a unit of work in a computer.
Definition
Procedure calls can be synchronous or asynchronous. Synchronous procedure calls are made on one thread in a series, with each call waiting for the prior call to complete. on some thread. APCs instead are made without waiting for prior ca... | Asynchronous procedure call | Technology,Engineering | 334 |
936,378 | https://en.wikipedia.org/wiki/Messier%2073 | Messier 73 (M73, also known as NGC 6994) is an asterism of four stars in the constellation Aquarius which was long thought to be a small open cluster. It lies several arcminutes east of globular cluster M72. According to Gaia EDR3, the stars are , , , and light-years from the Sun, with the second being a binary star.... | Messier 73 | Astronomy | 706 |
64,190,059 | https://en.wikipedia.org/wiki/ViaGen%20Pets | ViaGen Pets, based in Cedar Park, Texas, is a division of TransOva Genetics, that offers animal cloning services to pet owners. ViaGen Pets division was launched in 2016.
ViaGen Pets offers cloning as well as DNA preservation services, sometimes called tissue or cell banking.
Technology and patents
ViaGen's subsidiar... | ViaGen Pets | Engineering,Biology | 189 |
854,464 | https://en.wikipedia.org/wiki/Suina | Suina (also known as Suiformes) is a suborder of omnivorous, non-ruminant artiodactyl mammals that includes the domestic pig and peccaries. A member of this clade is known as a suine. Suina includes the family Suidae, termed suids, known in English as pigs or swine, as well as the family Tayassuidae, termed tayassuids... | Suina | Biology | 471 |
18,412,860 | https://en.wikipedia.org/wiki/Gliese%20445 | Gliese 445 (Gl 445 or AC +79 3888) is an M-type main sequence star in the northern part of the constellation Camelopardalis.
Location
Gliese 445 is currently 17.1 light-years from Earth and has an apparent magnitude of 10.8. It is visible all night long from locations north of the Tropic of Cancer, but not to the nak... | Gliese 445 | Astronomy | 342 |
39,564,779 | https://en.wikipedia.org/wiki/Xiaomi%20Mi%202S | Xiaomi Mi2S (often referred to as Xiaomi Phone 2S, Chinese: 小米手机2s), is a high-end, Android smartphone produced by Xiaomi. The device features a quad-core 1.7 GHz Qualcomm Snapdragon 600 as its CPU.
Two variations of the Mi2S have been released, a 16 GB and a 32 GB model. In addition to storage amount also the back ca... | Xiaomi Mi 2S | Technology | 469 |
2,079,955 | https://en.wikipedia.org/wiki/Ponzo%20illusion | The Ponzo illusion is a geometrical-optical illusion that takes its name from the Italian psychologist Mario Ponzo (1882–1960). Ponzo never claimed to have discovered it, and it is indeed present in earlier work. Much confusion is present about this including many references to a paper that Ponzo published in 1911 on t... | Ponzo illusion | Physics | 589 |
18,588,020 | https://en.wikipedia.org/wiki/Chill%20filtering | Chill filtering is a method in whisky making for removing residue. In chill filtering, whisky is cooled to between and passed through a fine adsorption filter. This is done mostly for cosmetic reasons — to remove cloudiness — however by many whisky drinkers it is thought to impair the taste by removing the details whi... | Chill filtering | Chemistry | 523 |
52,002,890 | https://en.wikipedia.org/wiki/Marie-Antoinette%20Tonnelat | Marie-Antoinette Tonnelat (née Baudot) (March 5, 1912 – December 3, 1980) was a French theoretical physicist. Her physics research focused on relativistic quantum mechanics under the influence of gravity. Along with the help of Albert Einstein and Erwin Schrödinger, she attempted to propose one of the first unified fi... | Marie-Antoinette Tonnelat | Physics | 1,032 |
14,736,250 | https://en.wikipedia.org/wiki/Delannoy%20number | In mathematics, a Delannoy number counts the paths from the southwest corner (0, 0) of a rectangular grid to the northeast corner (m, n), using only single steps north, northeast, or east. The Delannoy numbers are named after French army officer and amateur mathematician Henri Delannoy.
The Delannoy number also coun... | Delannoy number | Mathematics | 1,088 |
71,697,452 | https://en.wikipedia.org/wiki/Phageome | A phageome is a community of bacteriophages and their metagenomes localized in a particular environment, similar to a microbiome. Phageome is a subcategory of virome, which is all of the viruses that are associated with a host or environment. The term was first used in an article by Modi et al. in 2013 and has continue... | Phageome | Chemistry,Biology,Environmental_science | 978 |
6,782,238 | https://en.wikipedia.org/wiki/Bob%20Pease | Robert Allen Pease (August 22, 1940 – June 18, 2011) was an electronics engineer known for analog integrated circuit (IC) design, and as the author of technical books and articles about electronic design. He designed several very successful "best-seller" ICs, many of them in continuous production for multiple decades.... | Bob Pease | Technology,Engineering | 972 |
2,916,857 | https://en.wikipedia.org/wiki/54%20Cancri | 54 Cancri is a star in the zodiac constellation of Cancer. It has an apparent visual magnitude of 6.38, which places it just below the normal brightness limit of stars visible to the naked eye. The annual parallax shift is 24.79 mas as measured from Earth's orbit, which yields a distance estimate of about 132 light yea... | 54 Cancri | Astronomy | 245 |
13,814,824 | https://en.wikipedia.org/wiki/L%C3%BCbke%20English | The term Lübke English (or, in German, Lübke-Englisch) refers to nonsensical English created by literal word-by-word translation of German phrases, disregarding differences between the languages in syntax and meaning.
Lübke English is named after Heinrich Lübke, a president of Germany in the 1960s, whose limited Engli... | Lübke English | Technology | 322 |
55,940,145 | https://en.wikipedia.org/wiki/Climate%20restoration | Climate restoration is the climate change goal and associated actions to restore to levels humans have actually survived long-term, below 300 ppm. This would restore the Earth system generally to a safe state, for the well-being of future generations of humanity and nature. Actions include carbon dioxide removal from... | Climate restoration | Chemistry,Engineering | 1,881 |
16,063,325 | https://en.wikipedia.org/wiki/Peter%20B.%20Armentrout | Peter B. Armentrout (born 1953) is a researcher in thermochemistry, kinetics, and dynamics of simple and complex chemical reactions. He is a Chemistry Professor at the University of Utah.
Career
Armentrout received his B.S. degree from Case Western Reserve University in 1975 and earned his Ph.D. from the California I... | Peter B. Armentrout | Physics,Chemistry | 296 |
27,754,656 | https://en.wikipedia.org/wiki/Clinical%20and%20Translational%20Science%20Award | Clinical and Translational Science Award (CTSA) is a type of U.S. federal grant administered by the National Center for Advancing Translational Sciences, part of the National Institutes of Health. The CTSA program began in October 2006 under the auspices of the National Center for Research Resources with a consortium o... | Clinical and Translational Science Award | Technology | 923 |
6,324,689 | https://en.wikipedia.org/wiki/IQVIA | IQVIA, formerly Quintiles and IMS Health, Inc., is an American Fortune 500 and S&P 500 multinational company serving the combined industries of health information technology and clinical research. IQVIA is a provider of biopharmaceutical development, professional consulting and commercial outsourcing services, focused ... | IQVIA | Biology | 2,245 |
32,453,380 | https://en.wikipedia.org/wiki/Memo%20motion | Memo motion or spaced-shot photography is a tool of time and motion study that analyzes long operations by using a camera. It was developed 1946 by Marvin E. Mundel at Purdue University, who was first to save film material while planning studies on kitchen work.
Mundel published the method in 1947 with several studies... | Memo motion | Engineering | 228 |
55,313 | https://en.wikipedia.org/wiki/Allergy | Allergies, also known as allergic diseases, are various conditions caused by hypersensitivity of the immune system to typically harmless substances in the environment. These diseases include hay fever, food allergies, atopic dermatitis, allergic asthma, and anaphylaxis. Symptoms may include red eyes, an itchy rash, sne... | Allergy | Biology | 9,506 |
65,062,767 | https://en.wikipedia.org/wiki/Matthias%20L%C3%BCtolf | Matthias Lutolf (born in 1973, also known as Matthias Lütolf) is a bio-engineer and a professor at EPFL (École Polytechnique Fédérale de Lausanne) where he leads the Laboratory of Stem Cell Bioengineering. He is specialised in biomaterials, and in combining stem cell biology and engineering to develop improved organoid... | Matthias Lütolf | Engineering,Biology | 521 |
36,467,210 | https://en.wikipedia.org/wiki/Mingarelli%20identity | In the field of ordinary differential equations, the Mingarelli identity is a theorem that provides criteria for the oscillation and non-oscillation of solutions of some linear differential equations in the real domain. It extends the Picone identity from two to three or more differential equations of the second order.... | Mingarelli identity | Mathematics | 293 |
575,388 | https://en.wikipedia.org/wiki/Hand-kissing | Hand-kissing is a greeting gesture that indicates courtesy, politeness, respect, admiration, affection or even devotion by one person toward another. A hand-kiss is considered a respectful way for a gentleman to greet a lady. Today, non-ritual hand-kissing is rare and takes place mostly within conservative class or di... | Hand-kissing | Biology | 1,441 |
12,213,197 | https://en.wikipedia.org/wiki/Mixed-function%20oxidase | Mixed-function oxidase is the name of a family of oxidase enzymes that catalyze a reaction in which each of the two atoms of oxygen in O2 is used for a different function in the reaction.
Oxidase is a general name for enzymes that catalyze oxidations in which molecular oxygen is the electron acceptor but oxygen atoms ... | Mixed-function oxidase | Chemistry,Biology | 338 |
4,267,984 | https://en.wikipedia.org/wiki/Rydberg%20state | The Rydberg states of an atom or molecule are electronically excited states with energies that follow the Rydberg formula as they converge on an ionic state with an ionization energy. Although the Rydberg formula was developed to describe atomic energy levels, it has been used to describe many other systems that have ... | Rydberg state | Physics,Chemistry | 669 |
68,261,023 | https://en.wikipedia.org/wiki/Rope-burning%20puzzle | In recreational mathematics, rope-burning puzzles are a class of mathematical puzzle in which one is given lengths of rope, fuse cord, or shoelace that each burn for a given amount of time, and matches to set them on fire, and must use them to measure a non-unit amount of time. The fusible numbers are defined as the am... | Rope-burning puzzle | Mathematics | 1,137 |
34,942,573 | https://en.wikipedia.org/wiki/Sara%20Billey | Sara Cosette Billey is an American mathematician working in algebraic combinatorics. She is known for her contributions on Schubert polynomials, singular loci of Schubert varieties, Kostant polynomials, and Kazhdan–Lusztig polynomials often using computer verified proofs. She is currently a professor of mathematics at ... | Sara Billey | Mathematics | 268 |
13,856,857 | https://en.wikipedia.org/wiki/List%20of%20engineering%20branches | Engineering is the discipline and profession that applies scientific theories, mathematical methods, and empirical evidence to design, create, and analyze technological solutions, balancing technical requirements with concerns or constraints on safety, human factors, physical limits, regulations, practicality, and cost... | List of engineering branches | Engineering | 462 |
9,301,973 | https://en.wikipedia.org/wiki/Ozone%20monitoring%20instrument | The ozone monitoring instrument (OMI) is a nadir-viewing visual and ultraviolet spectrometer aboard the NASA Aura spacecraft, which is part of the satellite constellation A-Train. In this group of satellites Aura flies in formation about 15 minutes behind Aqua satellite, both of which orbit the Earth in a polar Sun-sy... | Ozone monitoring instrument | Physics,Chemistry,Technology,Engineering | 1,914 |
40,904,144 | https://en.wikipedia.org/wiki/Rocketry%20Organization%20of%20California | Rocketry Organization of California (ROC) is one of the world's oldest and biggest amateur high power rocket clubs. Monthly one day launches are held the second Saturday of each month. Anyone interested in hobby rocketry is welcome, and spectators are always free.
For more information, our web page is: rocstock.org
L... | Rocketry Organization of California | Engineering | 363 |
13,038,858 | https://en.wikipedia.org/wiki/EMR3 | EGF-like module-containing mucin-like hormone receptor-like 3 is a protein encoded by the ADGRE3 gene. EMR3 is a member of the adhesion GPCR family.
Adhesion GPCRs are characterized by an extended extracellular region often possessing N-terminal protein modules that is linked to a TM7 region via a domain known as the G... | EMR3 | Chemistry | 239 |
4,759,830 | https://en.wikipedia.org/wiki/Photochromic%20lens | A photochromic lens is an optical lens that darkens on exposure to light of sufficiently high frequency, most commonly ultraviolet (UV) radiation. In the absence of activating light, the lenses return to their clear state. Photochromic lenses may be made of polycarbonate, or another plastic. Glass lenses use visible l... | Photochromic lens | Physics,Chemistry,Materials_science,Engineering | 869 |
1,065,209 | https://en.wikipedia.org/wiki/Worldspan | Worldspan is a provider of travel technology and content and a part of the Travelport GDS business. It offers worldwide electronic distribution of travel information, Internet products and connectivity, and e-commerce capabilities for travel agencies, travel service providers and corporations. Its primary system is c... | Worldspan | Technology | 603 |
70,716,297 | https://en.wikipedia.org/wiki/Spatial%20anxiety | Spatial anxiety (sometimes also referred to as spatial orientation discomfort) is a sense of anxiety an individual experiences while processing environmental information contained in one's geographical space (in the sense of Montello's classification of space), with the purpose of navigation and orientation through tha... | Spatial anxiety | Physics,Mathematics | 1,630 |
65,088,597 | https://en.wikipedia.org/wiki/Moto%20G9 | Moto G9 (stylized by Motorola as moto g9) is a series of Android smartphones developed by Motorola Mobility, a subsidiary of Lenovo. It is the ninth generation of the Moto G family.
Specifications
Some specifications such as wireless technologies and storage will differ between regions.
References
Motorola smartphon... | Moto G9 | Technology | 81 |
1,112,273 | https://en.wikipedia.org/wiki/Heat%20of%20combustion | The heating value (or energy value or calorific value) of a substance, usually a fuel or food (see food energy), is the amount of heat released during the combustion of a specified amount of it.
The calorific value is the total energy released as heat when a substance undergoes complete combustion with oxygen under st... | Heat of combustion | Physics,Chemistry,Mathematics,Engineering | 2,887 |
25,205,346 | https://en.wikipedia.org/wiki/Black%20hole%20starship | In astronautics, a black hole starship is the theoretical concept of a starship capable of interstellar travel using a black hole as an energy source for spacecraft propulsion. The concept was first discussed in science fiction, notably in the book Imperial Earth by Arthur C. Clarke, and in the work of Charles Sheffiel... | Black hole starship | Astronomy,Technology | 1,363 |
50,431,127 | https://en.wikipedia.org/wiki/TRAPPIST-1d | TRAPPIST-1d is a small exoplanet (about 40 percent the mass of the Earth), which orbits on the inner edge of the habitable zone of the ultracool dwarf star TRAPPIST-1, located away from Earth in the constellation of Aquarius. The exoplanet was found by using the transit method. The first signs of the planet were annou... | TRAPPIST-1d | Astronomy | 2,173 |
1,937,658 | https://en.wikipedia.org/wiki/Time%20reversibility | A mathematical or physical process is time-reversible if the dynamics of the process remain well-defined when the sequence of time-states is reversed.
A deterministic process is time-reversible if the time-reversed process satisfies the same dynamic equations as the original process; in other words, the equations are ... | Time reversibility | Physics,Mathematics | 1,032 |
21,496,171 | https://en.wikipedia.org/wiki/Site%20plan | A site plan or a plot plan is a type of drawing used by architects, landscape architects, urban planners, and engineers which shows existing and proposed conditions for a given area, typically a parcel of land which is to be modified. Sites plan typically show buildings, roads, sidewalks and paths/trails, parking, drai... | Site plan | Engineering | 1,124 |
12,706,857 | https://en.wikipedia.org/wiki/Aircraft%20specific%20energy | Aircraft-specific energy is a form of specific energy applied to aircraft and missile trajectory analysis. It represents the combined kinetic and potential energy of the vehicle at any given time. It is the total energy of the vehicle (relative to the Earth's surface) per unit weight of the vehicle. Being independent o... | Aircraft specific energy | Chemistry,Engineering | 527 |
449,677 | https://en.wikipedia.org/wiki/Project%20Stormfury | Project Stormfury was an attempt to weaken tropical cyclones by flying aircraft into them and seeding them with silver iodide. The project was run by the United States Government from 1962 to 1983. The hypothesis was that the silver iodide would cause supercooled water in the storm to freeze, disrupting the inner struc... | Project Stormfury | Engineering | 3,434 |
26,011,932 | https://en.wikipedia.org/wiki/Barsanti%E2%80%93Matteucci%20engine | The Barsanti-Matteucci engine was the first invented internal combustion engine using the free-piston principle in an atmospheric two cycle engine. In late 1851 or early 1852 Eugenio Barsanti, a professor of mathematics, and Felice Matteucci, an engineer and expert in mechanics and hydraulics, joined forces on a projec... | Barsanti–Matteucci engine | Technology,Engineering | 406 |
41,547,719 | https://en.wikipedia.org/wiki/Trustworthy%20Software%20Foundation | The Trustworthy Software Foundation (TSFdn) is a UK not-for-profit organisation, with stated aim of improving software.
History
TSFdn evolved from a number of previous activities:
A study by the Cabinet Office, Central Sponsor for Information Assurance (CSIA) in 2004-5 which identified a pervasive lack of secure softw... | Trustworthy Software Foundation | Technology,Engineering | 659 |
37,264,560 | https://en.wikipedia.org/wiki/COBie | Construction Operations Building Information Exchange (COBie) is a United States-originated specification relating to managed asset information including space and equipment. It is closely associated with building information modeling (BIM) approaches to design, construction, and management of built assets.
Purpose
C... | COBie | Engineering | 1,497 |
37,253,906 | https://en.wikipedia.org/wiki/Bruce%20Reed%20%28mathematician%29 | Bruce Alan Reed FRSC is a Canadian mathematician and computer scientist, a former Canada Research Chair in Graph Theory at McGill University. His research is primarily in graph theory. He is a distinguished research fellow of the Institute of Mathematics in the Academia Sinica, Taiwan, and an adjunct professor at the U... | Bruce Reed (mathematician) | Mathematics | 391 |
32,501,935 | https://en.wikipedia.org/wiki/Megaprojects%20and%20Risk | Megaprojects and Risk: An Anatomy of Ambition is a 2003 book by Bent Flyvbjerg, Nils Bruzelius, and Werner Rothengatter, published by Cambridge University Press.
Overview
"Megaprojects" is the term applied to multibillion-dollar infrastructure developments such as massive dams and bridges, and to elaborate railways an... | Megaprojects and Risk | Engineering | 817 |
20,002,862 | https://en.wikipedia.org/wiki/X-parameters | X-parameters are a generalization of S-parameters and are used for characterizing the amplitudes and relative phase of harmonics generated by nonlinear components under large input power levels. X-parameters are also referred to as the parameters of the Poly-Harmonic Distortion (PHD) nonlinear behavioral model.
Descr... | X-parameters | Engineering | 429 |
25,387,283 | https://en.wikipedia.org/wiki/Testing%20Maturity%20Model | The Testing Maturity Model (TMM) was based on the Capability Maturity Model, and first produced by the Illinois Institute of Technology.
Its aim to be used in a similar way to CMM, that is to provide a framework for assessing the maturity of the test processes in an organisation, and so providing targets on improving ... | Testing Maturity Model | Engineering | 190 |
464,877 | https://en.wikipedia.org/wiki/Information%20management | Information management (IM) is the appropriate and optimized capture, storage, retrieval, and use of information. It may be personal information management or organizational. Information management for organizations concerns a cycle of organizational activity: the acquisition of information from one or more sources, th... | Information management | Technology | 3,346 |
3,596,573 | https://en.wikipedia.org/wiki/Python%20Software%20Foundation%20License | The Python Software Foundation License (PSFL) is a BSD-style, permissive software license which is compatible with the GNU General Public License (GPL). Its primary use is for distribution of the Python project software and its documentation. Since the license is permissive, it allows proprietization of the derivations... | Python Software Foundation License | Engineering | 254 |
33,987,434 | https://en.wikipedia.org/wiki/Ubiquiti | Ubiquiti Inc. (formerly Ubiquiti Networks, Inc.) is an American technology company founded in San Jose, California, in 2003. Now based in New York City, Ubiquiti manufactures and sells wireless data communication and wired products for enterprises and homes under multiple brand names. On October 13, 2011, Ubiquiti had ... | Ubiquiti | Technology | 1,552 |
48,400,446 | https://en.wikipedia.org/wiki/Droid%20Turbo%202 | The Moto X Force is a high-end Android smartphone made by Motorola Mobility. Inside the United States, it is branded as the Droid Turbo 2, available exclusively in the United States for the Verizon Droid brand. It was released on October 27, 2015. The phone is marketed as having "the world's first shatterproof screen."... | Droid Turbo 2 | Technology | 559 |
66,345,698 | https://en.wikipedia.org/wiki/EyeHarp | The EyeHarp is an electronic musical instrument controlled by the player's eye or head movements. It combines eye tracking hardware and specially designed software, which has one component for defining chords and arpeggios, and another to change those definitions and play melodies. People with severely impaired motor f... | EyeHarp | Engineering | 264 |
61,234,353 | https://en.wikipedia.org/wiki/Wyze%20Labs | Wyze Labs, Inc. (formerly Wyzecam), also known as Wyze, is an American technology company based in Seattle, Washington, that specializes in smart home products and wireless cameras. It is a start-up of former Amazon employees.
History
Wyze was incorporated on July 19, 2017, by four co-founders: CEO Yun Zhang, CPO Don... | Wyze Labs | Technology | 677 |
43,028,463 | https://en.wikipedia.org/wiki/List%20of%20botanists%20by%20author%20abbreviation%20%28I%E2%80%93J%29 |
A–H
To find entries for A–H, use the table of contents above.
I
I.A.Abbott – Isabella Aiona Abbott (1919–2010)
I.A.Pilát – Ignatz Anton Pilát (1820–1870)
I.Baker – Irene Baker (1918–1989)
I.Barua – Iswar Chandra Barua (born 1960)
I.Bjørnstadt (also Nordal) – Inger Nordal (born 1944)
Ickert-Bond – Stefanie ... | List of botanists by author abbreviation (I–J) | Biology | 6,160 |
61,021,184 | https://en.wikipedia.org/wiki/Progesterone/hydroxyprogesterone%20heptanoate/%CE%B1-tocopherol%20palmitate | Progesterone/hydroxyprogesterone heptanoate/α-tocopherol palmitate (P4/OHPH/VE), sold under the brand name Tocogestan, is a combination medication of progesterone (P4), a short-acting progestogen, hydroxyprogesterone heptanoate (OHPH), a long-acting progestogen, and α-tocopherol palmitate, a prodrug of α-tocopherol and... | Progesterone/hydroxyprogesterone heptanoate/α-tocopherol palmitate | Chemistry | 206 |
13,859,391 | https://en.wikipedia.org/wiki/Pangamic%20acid | Pangamic acid, also called pangamate, is the name given to a chemical compound discovered by Ernst T. Krebs Sr. His son, Ernst T. Krebs Jr., promoted it as a medicinal compound for use in treatment of a wide range of diseases. They also termed this chemical "vitamin B15", though it is not a true vitamin, has no nutrit... | Pangamic acid | Chemistry | 1,319 |
75,272,374 | https://en.wikipedia.org/wiki/NGC%20871 | NGC 871 is a barred spiral galaxy in the Aries constellation. Its discovery and first description was realized by William Herschel on October 14, 1784 and the findings made public through his Catalogue of Nebulae and Clusters of Stars in 1786.
By using the galaxies' radial velocities and distances as a grouping factor... | NGC 871 | Astronomy | 468 |
30,682,536 | https://en.wikipedia.org/wiki/Zeeman%20slower | In atomic physics, a Zeeman slower is a scientific instrument that is commonly used in atomic physics to slow and cool a beam of hot atoms to speeds of several meters per second and temperatures below a kelvin. The gas-phase atoms used in atomic physics are often generated in an oven by heating a solid or liquid atomi... | Zeeman slower | Physics,Chemistry,Technology,Engineering | 1,394 |
44,844,408 | https://en.wikipedia.org/wiki/Deal%20%28unit%29 | Deal is an obsolete unit of measurement formerly used in the UK and US to measure wood. In the late 18th and early 19th centuries, a deal originally referred to a wooden board between 12 and 14 feet long that was traded as a maritime commodity.
Definition
Deal (UK) is equal to 7 ft × 6 ft × in.
Deal (US) is equa... | Deal (unit) | Mathematics | 244 |
20,363,345 | https://en.wikipedia.org/wiki/Log%20jam | A log jam is a naturally occurring phenomenon characterized by a dense accumulation of tree trunks and pieces of large wood across a vast section of a river, stream, or lake. ("Large wood" is commonly defined to be pieces of wood more than in diameter and more than long.) Log jams in rivers and streams often span the... | Log jam | Biology | 1,142 |
22,778,065 | https://en.wikipedia.org/wiki/Inductive%20type | In type theory, a system has inductive types if it has facilities for creating a new type from constants and functions that create terms of that type. The feature serves a role similar to data structures in a programming language and allows a type theory to add concepts like numbers, relations, and trees. As the name... | Inductive type | Mathematics | 1,315 |
38,249,017 | https://en.wikipedia.org/wiki/Rider%27s%20British%20Merlin | Rider's British Merlin was one of the earliest almanacs to be published, issued from 1656 until at least 1830.
Content
The almanac contained the calendar, weather, and astronomical and astrological information that a typical almanac of the period would contain. The pages for each month of the year were accompanied by ... | Rider's British Merlin | Astronomy | 472 |
18,298,594 | https://en.wikipedia.org/wiki/Crossing%20number%20%28graph%20theory%29 | In graph theory, the crossing number of a graph is the lowest number of edge crossings of a plane drawing of the graph . For instance, a graph is planar if and only if its crossing number is zero. Determining the crossing number continues to be of great importance in graph drawing, as user studies have shown that dra... | Crossing number (graph theory) | Mathematics | 2,332 |
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