id int64 580 79M | url stringlengths 31 175 | text stringlengths 9 245k | source stringlengths 1 109 | categories stringclasses 160
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252,076 | https://en.wikipedia.org/wiki/G%CE%B4%20set | {{DISPLAYTITLE:Gδ set}}
In the mathematical field of topology, a Gδ set is a subset of a topological space that is a countable intersection of open sets. The notation originated from the German nouns and .
Historically Gδ sets were also called inner limiting sets, but that terminology is not in use anymore.
Gδ sets,... | Gδ set | Mathematics | 1,022 |
31,252,114 | https://en.wikipedia.org/wiki/Neoendorphin | Neoendorphins are a group of endogenous opioid peptides derived from the proteolytic cleavage of prodynorphin. They include α-neoendorphin and β-neoendorphin. The α-neoendorphin is present in greater amounts in the brain than β-neoendorphin. Both are products of the dynorphin gene, which also expresses dynorphin A, dy... | Neoendorphin | Chemistry,Biology | 299 |
2,208,970 | https://en.wikipedia.org/wiki/Intensity%20interferometer | An intensity interferometer is the name given to devices that use the Hanbury Brown and Twiss effect. In astronomy, the most common use of such an astronomical interferometer is to determine the apparent angular diameter of a radio source or star. If the distance to the object can then be determined by parallax or some... | Intensity interferometer | Physics,Astronomy | 329 |
57,778,150 | https://en.wikipedia.org/wiki/Cole%20equation%20of%20state | An equation of state introduced by R. H. Cole
where is a reference density, is the adiabatic index, and is a parameter with pressure units.
References
External links
Cole equation of state article at sklogwiki
Equations of state | Cole equation of state | Physics,Chemistry | 50 |
41,838,740 | https://en.wikipedia.org/wiki/Micropyle%20%28zoology%29 | A micropyle is a pore in the membrane covering the ovum, through which a sperm enters.
Micropyles are also found in sporozoites of some digenetic microorganisms such as Plasmodium at the anterior part of the cell that ultimately leads towards the apical cap. Examples of other organisms that have micropyles are the Bomb... | Micropyle (zoology) | Biology | 91 |
74,933,186 | https://en.wikipedia.org/wiki/Eta3%20Fornacis | {{DISPLAYTITLE:Eta3 Fornacis}}
Eta3 Fornacis (η3 Fornacis) is an orange giant in the constellation of Fornax. The star has a spectral type of K2III and an apparent magnitude of 5.47. The star is visually close to, but unrelated with the similar stars η2 Fornacis and η1 Fornacis. The star is located at approximately 48... | Eta3 Fornacis | Astronomy | 139 |
6,138,977 | https://en.wikipedia.org/wiki/EURAMET | EURAMET (European Association of National Metrology Institutes, previously known as EUROMET, the European Collaboration in Measurement Standards) is a collaborative alliance of national metrological organizations from member states of the European Union (EU) and of the European Free Trade Association (EFTA) whose purpo... | EURAMET | Physics,Mathematics | 310 |
2,853,242 | https://en.wikipedia.org/wiki/Uranium%20metallurgy | In materials science and materials engineering, uranium metallurgy is the study of the physical and chemical behavior of uranium and its alloys.
Commercial-grade uranium can be produced through the reduction of uranium halides with alkali or alkaline earth metals. Uranium metal can also be made through electrolysis of... | Uranium metallurgy | Chemistry,Materials_science,Engineering | 285 |
68,259,709 | https://en.wikipedia.org/wiki/Valencia%20Koomson | Valencia Joyner Koomson is an American electrical engineer. She is an associate professor in the Department of Electrical and Computer Engineering with secondary appointments in the Department of Computer Science and the Jonathan M. Tisch College of Civic Life at Tufts University. She is the principal investigator for... | Valencia Koomson | Technology,Engineering | 723 |
9,753,326 | https://en.wikipedia.org/wiki/Ken%20Ono | Ken Ono (born March 20, 1968) is an American mathematician with fields of study in number theory. He is the STEM Advisor to the Provost and the Marvin Rosenblum Professor of Mathematics at the University of Virginia.
Early life and education
Ono was born on March 20, 1968, in Philadelphia, Pennsylvania. He is the son ... | Ken Ono | Mathematics | 1,225 |
28,916,502 | https://en.wikipedia.org/wiki/Autochaperone | In molecular biology, autotransporter proteins are proteins secreted out the Gram-negative bacteria. These beta helixes require a domain which is called the intramolecular autochaperone domain. It shows similarities with other intramolecular chaperone sequences and has a folding-associated function. This increases the ... | Autochaperone | Chemistry,Biology | 220 |
2,837,716 | https://en.wikipedia.org/wiki/Fretting | Fretting refers to wear and sometimes corrosion damage of loaded surfaces in contact while they encounter small oscillatory movements tangential to the surface. Fretting is caused by adhesion of contact surface asperities, which are subsequently broken again by the small movement. This breaking causes wear debris to ... | Fretting | Chemistry,Materials_science,Engineering | 1,292 |
12,515,152 | https://en.wikipedia.org/wiki/Aceramarca%20gracile%20opossum | The Aceramarca gracile opossum or Bolivian gracile opossum (Gracilinanus aceramarcae) is a species of opossum. It is native to Bolivia and Peru, where it occurs in tropical elfin forest habitat.
This opossum is mostly arboreal, but it may forage on the ground for food.
This species has been recorded at only six locat... | Aceramarca gracile opossum | Biology | 201 |
66,516,101 | https://en.wikipedia.org/wiki/Rousettus%20bat%20coronavirus%20GCCDC1 | Rousettus bat coronavirus GCCDC1 is a species of coronavirus in the genus Betacoronavirus.
References
Betacoronaviruses | Rousettus bat coronavirus GCCDC1 | Biology | 32 |
23,080,169 | https://en.wikipedia.org/wiki/Lammas%20growth | Lammas growth, also called Lammas leaves, Lammas flush, second shoots, or summer shoots, is a season of renewed growth in some trees in temperate regions put on in July and August (if in the northern hemisphere, January and February if in the southern), that is around Lammas day, August 1.
It can occur in both hardwo... | Lammas growth | Biology | 229 |
33,063,577 | https://en.wikipedia.org/wiki/List%20of%20Saint%20Patrick%27s%20crosses | A variety of crosses, both designs and physical objects, have been associated with Saint Patrick, the patron saint of Ireland. Traditionally, the cross pattée has been associated with him, but in more recent times, the Saint Patrick's Saltire has also been linked to him.
Some authors have stated, however, that Patrick ... | List of Saint Patrick's crosses | Mathematics | 1,520 |
51,123,191 | https://en.wikipedia.org/wiki/Firebase%20Cloud%20Messaging | Firebase Cloud Messaging (FCM), formerly known as Google Cloud Messaging (GCM), is a cross-platform cloud service for messages and notifications for Android, iOS, and web applications, which as of May 2023 can be used at no cost. Firebase Cloud Messaging allows third-party application developers to send notifications o... | Firebase Cloud Messaging | Technology | 2,460 |
4,364,523 | https://en.wikipedia.org/wiki/Fission%20products%20%28by%20element%29 | This page discusses each of the main elements in the mixture of fission products produced by nuclear fission of the common nuclear fuels uranium and plutonium. The isotopes are listed by element, in order by atomic number.
Neutron capture by the nuclear fuel in nuclear reactors and atomic bombs also produces actinides... | Fission products (by element) | Physics,Chemistry | 5,720 |
10,803,719 | https://en.wikipedia.org/wiki/String%20operations | In computer science, in the area of formal language theory, frequent use is made of a variety of string functions; however, the notation used is different from that used for computer programming, and some commonly used functions in the theoretical realm are rarely used when programming. This article defines some of t... | String operations | Mathematics,Technology | 1,926 |
71,989,813 | https://en.wikipedia.org/wiki/Nitryl%20cyanide | Nitryl cyanide is an energetic chemical compound with the formula NCNO2. Nitryl cyanide is a possible precursor to the theoretical explosive 2,4,6-trinitro-1,3,5-triazine.
Synthesis
Nitryl cyanide was first synthesized in 2014. The reaction of nitronium tetrafluoroborate with tert-butyldimethylsilyl cyanide at −30 °C... | Nitryl cyanide | Chemistry | 174 |
39,482,555 | https://en.wikipedia.org/wiki/Life%20Sciences%20Research%20Foundation | The Life Sciences Research Foundation (LSRF) is a postdoctoral fellowship program, with missions "to identify and fund exceptional young scientists at a critical juncture of their training in all areas of basic life sciences" and "to establish partnerships between those who support research in the life sciences and aca... | Life Sciences Research Foundation | Biology | 230 |
2,527,244 | https://en.wikipedia.org/wiki/Isotopes%20of%20darmstadtium | Darmstadtium (110Ds) is a synthetic element, and thus a standard atomic weight cannot be given. Like all synthetic elements, it has no stable isotopes. The first isotope to be synthesized was 269Ds in 1994. There are 11 known radioisotopes from 267Ds to 281Ds (with many gaps) and 2 or 3 known isomers. The longest-lived... | Isotopes of darmstadtium | Chemistry | 3,561 |
20,455,598 | https://en.wikipedia.org/wiki/Polymer%20Battery%20Experiment | The Polymer Battery Experiment (PBEX) demonstrates the charging and discharging characteristics of polymer batteries in the space environment. PBEX validates use of lightweight, flexible battery technology to decrease cost and weight for future military and commercial space systems. PBEX was developed by Johns Hopkins ... | Polymer Battery Experiment | Chemistry | 180 |
11,570,376 | https://en.wikipedia.org/wiki/Cerrena%20unicolor | Cerrena unicolor, commonly known as the mossy maze polypore, is a species of poroid fungus in the genus Cerrena (Family: Polyporaceae). This saprobic fungus causes white rot.
Taxonomy
The fungus was originally described by French botanist Jean Bulliard in 1785 as Boletus unicolor, when all pored fungi were typically a... | Cerrena unicolor | Biology | 1,152 |
4,717,751 | https://en.wikipedia.org/wiki/History%20of%20the%20Dylan%20programming%20language | Dylan programming language history first introduces the history with a continuous text. The second section gives a timeline overview of the history and present several milestones and watersheds. The third section presents quotations related to the history of the Dylan programming language.
Introduction to the history ... | History of the Dylan programming language | Technology | 3,339 |
645,139 | https://en.wikipedia.org/wiki/Data%20dictionary | A data dictionary, or metadata repository, as defined in the IBM Dictionary of Computing, is a "centralized repository of information about data such as meaning, relationships to other data, origin, usage, and format". Oracle defines it as a collection of tables with metadata. The term can have one of several closely r... | Data dictionary | Technology,Engineering | 1,609 |
13,922,392 | https://en.wikipedia.org/wiki/International%20Phytogeographic%20Excursion | The International Phytogeographic Excursions was a series of international meetings in plant geography that significantly contributed to exchange of scientific ideas across national and linguistic barriers and also to the rise of Anglo-American plant ecology. The initiative was taken by the British botanist Arthur Tans... | International Phytogeographic Excursion | Biology | 977 |
254,498 | https://en.wikipedia.org/wiki/Harry%20Potter%20and%20the%20Prisoner%20of%20Azkaban | Harry Potter and the Prisoner of Azkaban is a fantasy novel written by British author J. K. Rowling. It is the third instalment in the Harry Potter series. The novel follows Harry Potter, a young wizard, in his third year at Hogwarts School of Witchcraft and Wizardry. Along with friends Ron Weasley and Hermione Granger... | Harry Potter and the Prisoner of Azkaban | Physics,Mathematics | 2,795 |
49,632,961 | https://en.wikipedia.org/wiki/List%20of%20security%20assessment%20tools | This is a list of available software and hardware tools that are designed for or are particularly suited to various kinds of security assessment and security testing.
Operating systems and tool suites
Several operating systems and tool suites provide bundles of tools useful for various types of security assessment.
... | List of security assessment tools | Technology | 145 |
2,193,362 | https://en.wikipedia.org/wiki/Chromophore | A chromophore is a molecule which absorbs light at a particular wavelength and reflects color as a result. Chromophores are commonly referred to as colored molecules for this reason. The word is derived . Many molecules in nature are chromophores, including chlorophyll, the molecule responsible for the green colors of ... | Chromophore | Physics,Chemistry | 1,229 |
16,290,826 | https://en.wikipedia.org/wiki/PSR%20J0855%E2%88%924644 | PSR J0855-4644 is a pulsar in the constellation Vela, and was at one time thought possibly associated with supernova remnant RX J0852.0-4622. However, this association is considered unlikely since a central compact object with better matching kinematics to the shell has been observed.
References
External links
Simba... | PSR J0855−4644 | Astronomy | 84 |
55,588,470 | https://en.wikipedia.org/wiki/Chondrometer | A chondrometer is a measuring instrument designed to determine the bulk density of grain. Grain density is measured in kilograms per hectolitre (Imp. pounds per bushel). It is thus also referred to as the hectolitre mass.
Purpose
Density is a guide to wheat quality and determines the price and the space required to st... | Chondrometer | Technology,Engineering | 271 |
21,165,748 | https://en.wikipedia.org/wiki/Drug-induced%20urticaria | One of the most prevalent forms of adverse drug reactions is cutaneous reactions, with drug-induced urticaria ranking as the second most common type, preceded by drug-induced exanthems. Urticaria, commonly known as hives, manifests as weals, itching, burning, redness, swelling, and angioedema—a rapid swelling of lower ... | Drug-induced urticaria | Chemistry | 860 |
53,653,732 | https://en.wikipedia.org/wiki/WISEA%201101%2B5400 | WISEA 1101+5400 (full name WISEA J110125.95+540052.8) is a T-type brown dwarf (specifically T5.5) approximately 100 light-years away in the constellation Ursa Major. It was discovered in March 2017 by members of the citizen science project Backyard Worlds. Initial photometric analysis suggested it was a T5.5 dwarf, whi... | WISEA 1101+5400 | Astronomy | 377 |
12,194,869 | https://en.wikipedia.org/wiki/C3H5NO | {{DISPLAYTITLE:C3H5NO}}
The molecular formula C3H5NO (molar mass: 71.08 g/mol, exact mass: 71.0371 u) may refer to:
Acrylamide (repeating unit in polyacrylamide)
2-Azetidinone
Isoxazoline
Lactonitrile
Oxazoline | C3H5NO | Chemistry | 83 |
69,612,044 | https://en.wikipedia.org/wiki/Scotland%27s%20Churches%20Trust | Scotland's Churches Trust is a Scottish registered charity whose “aims are to advance the preservation, promotion and understanding of Scotland’s rich architectural heritage represented in its churches and places of worship of all denominations.” Its principal activities are “promoting heritage and tourism” and “giving... | Scotland's Churches Trust | Engineering | 686 |
22,385,872 | https://en.wikipedia.org/wiki/Tom%20Poberezny | Thomas Paul Poberezny (October 3, 1946 – July 25, 2022) was an American aerobatic world champion aviator, as well as chairman of the annual Experimental Aircraft Association (EAA) Fly-In and Convention (now named AirVenture) from 1977 to 2011 and president of EAA from 1989 to 2010, presiding over a time period of expan... | Tom Poberezny | Engineering | 1,662 |
8,077,742 | https://en.wikipedia.org/wiki/Target%20Disk%20Mode | Target Disk Mode (sometimes referred to as TDM or Target Mode) is a boot mode unique to Macintosh computers.
When a Mac that supports Target Disk Mode is started with the 'T' key held down, its operating system does not boot. Instead, the Mac's firmware enables its drives to behave as a SCSI, FireWire, Thunderbolt, or... | Target Disk Mode | Technology | 1,188 |
2,681,594 | https://en.wikipedia.org/wiki/Alpha%20Sextantis | Alpha Sextantis (α Sex, α Sextantis) is the brightest star in the equatorial constellation of Sextans. It is visible to the naked eye on a dark night with an apparent visual magnitude of 4.49. The distance to this star, as determined from parallax measurements, is around 280 light years. This is considered an informal ... | Alpha Sextantis | Astronomy | 330 |
14,755,064 | https://en.wikipedia.org/wiki/DAZ1 | Deleted in azoospermia 1, also known as DAZ1, is a protein which in humans is encoded by the DAZ1 gene.
Function
This gene is a member of the DAZ gene family and is a candidate for the human Y-chromosomal azoospermia factor (AZF). Its expression is restricted to pre-meiotic germ cells, particularly in spermatogonia.... | DAZ1 | Chemistry | 305 |
60,913 | https://en.wikipedia.org/wiki/Stigmergy | Stigmergy ( ) is a mechanism of indirect coordination, through the environment, between agents or actions. The principle is that the trace left in the environment by an individual action stimulates the performance of a succeeding action by the same or different agent. Agents that respond to traces in the environment re... | Stigmergy | Mathematics | 1,466 |
40,729,402 | https://en.wikipedia.org/wiki/Arctic%20moss | Arctic moss is a common name for several plants and may refer to:
Calliergon giganteum, an aquatic moss
Cladonia, a genus of lichens | Arctic moss | Biology | 35 |
27,774,331 | https://en.wikipedia.org/wiki/Mechanics%20of%20human%20sexuality | The mechanics of human sexuality or mechanics of sex, or more formally the biomechanics of human sexuality, is the study of the mechanics related to human sexual activity. Examples of topics include the biomechanical study of the strength of vaginal tissues and the biomechanics of male erectile function. The mechanics ... | Mechanics of human sexuality | Physics,Biology | 299 |
55,059,510 | https://en.wikipedia.org/wiki/Immunological%20memory | Immunological memory is the ability of the immune system to quickly and specifically recognize an antigen that the body has previously encountered and initiate a corresponding immune response. Generally, they are secondary, tertiary and other subsequent immune responses to the same antigen. The adaptive immune system a... | Immunological memory | Biology | 2,600 |
8,876,082 | https://en.wikipedia.org/wiki/Kirkman%27s%20schoolgirl%20problem | Kirkman's schoolgirl problem is a problem in combinatorics proposed by Thomas Penyngton Kirkman in 1850 as Query VI in The Lady's and Gentleman's Diary (pg.48). The problem states:
Fifteen young ladies in a school walk out three abreast for seven days in succession: it is required to arrange them daily so that no two... | Kirkman's schoolgirl problem | Mathematics | 4,411 |
16,675,717 | https://en.wikipedia.org/wiki/Rotane | A rotane is a hydrocarbon consisting of a central cycloalkane ring with cyclopropane units spiro-linked to each corner. The systematic naming pattern for these molecules is "[n]rotane", where n is the number of atoms in the central ring.
The simplest such chemical, [3]rotane, consists solely of a branched array of spi... | Rotane | Chemistry | 113 |
21,183,896 | https://en.wikipedia.org/wiki/CACNA1I | Calcium channel, voltage-dependent, T type, alpha 1I subunit, also known as CACNA1I or Cav3.3 is a protein which in humans is encoded by the CACNA1I gene.
Function
Voltage-dependent calcium channels can be distinguished based on their voltage-dependence, deactivation, and single-channel conductance. Low-voltage-activ... | CACNA1I | Chemistry | 163 |
48,189,396 | https://en.wikipedia.org/wiki/CssII | Centruroides suffusus suffusus toxin II (CssII) is a scorpion β-toxin from the venom of the scorpion Centruroides suffusus suffusus. CssII primarily affects voltage-gated sodium channels by causing a hyperpolarizing shift of voltage dependence, a reduction in peak transient current, and the occurrence of resurgent curr... | CssII | Chemistry | 1,107 |
34,303,509 | https://en.wikipedia.org/wiki/Research%20Works%20Act | The Research Works Act, 102 H.R. 3699, was a bill that was introduced in the United States House of Representatives at the 112th United States Congress on December 16, 2011, by Representative Darrell Issa (R-CA) and co-sponsored by Carolyn B. Maloney (D-NY). The bill contained provisions to prohibit open-access mandate... | Research Works Act | Technology | 1,168 |
28,084,571 | https://en.wikipedia.org/wiki/Frozen%20Ark | The Frozen Ark is a charitable frozen zoo project created jointly by the Zoological Society of London, the Natural History Museum and University of Nottingham. The project aims to preserve the DNA and living cells of endangered species to retain the genetic knowledge for the future. The Frozen Ark collects and stores s... | Frozen Ark | Physics,Chemistry,Biology | 186 |
29,016,014 | https://en.wikipedia.org/wiki/Prodigy%20house | Prodigy houses are large and showy English country houses built by courtiers and other wealthy families, either "noble palaces of an awesome scale" or "proud, ambitious heaps" according to taste. The prodigy houses stretch over the periods of Tudor, Elizabethan, and Jacobean architecture, though the term may be restri... | Prodigy house | Engineering | 3,893 |
52,338,899 | https://en.wikipedia.org/wiki/Self-making%20bed | A self-making bed (also known as a smart bed) is designed to automatically rearrange the bedding on a bed and prepare itself for use.
History
In 2008, inventor Enrico Berruti featured his self-making bed, dubbed "Selfy", at The International Exhibition of Inventions in Geneva, Switzerland. The bed makes itself by str... | Self-making bed | Technology,Biology | 215 |
842,479 | https://en.wikipedia.org/wiki/Prestel | Prestel was the brand name of a videotex service launched in the UK in 1979 by Post Office Telecommunications, a division of the British Post Office. It had around 95,500 attached terminals at its peak, and was a forerunner of the internet-based online services developed in the late 20th and early 21st centuries. Prest... | Prestel | Technology | 9,231 |
20,607,025 | https://en.wikipedia.org/wiki/Google%20Native%20Client | Google Native Client (NaCl) is a discontinued sandboxing technology for running either a subset of Intel x86, ARM, or MIPS native code, or a portable executable, in a sandbox. It allows safely running native code from a web browser, independent of the user operating system, allowing web apps to run at near-native speed... | Google Native Client | Engineering | 2,407 |
27,153,398 | https://en.wikipedia.org/wiki/Natural%20logarithm%20of%202 | In mathematics, the natural logarithm of 2 is the unique real number argument such that the exponential function equals two. It appears regularly in various formulas and is also given by the alternating harmonic series. The decimal value of the natural logarithm of 2 truncated at 30 decimal places is given by:
The lo... | Natural logarithm of 2 | Mathematics | 691 |
2,479,857 | https://en.wikipedia.org/wiki/StrongSwan | strongSwan is a multiplatform IPsec implementation. The focus of the project is on authentication mechanisms using X.509 public key certificates and optional storage of private keys and certificates on smartcards through a PKCS#11 interface and on TPM 2.0.
Overview
The project is maintained by Andreas Steffen who is a... | StrongSwan | Mathematics | 1,119 |
5,578,915 | https://en.wikipedia.org/wiki/Norcamphor | Norcamphor is an organic compound, classified as a bicyclic ketone. It is an analog of camphor, but without the three methyl groups. A colorless solid, it is used as a building block in organic synthesis. Norcamphor is prepared from norbornene via the 2-formate ester, which is oxidized. It is a useful precursor to n... | Norcamphor | Chemistry | 102 |
6,879,482 | https://en.wikipedia.org/wiki/PCMark | PCMark is a computer benchmark tool developed by UL (formerly Futuremark) to test the performance of a PC at the system and component level. In most cases, the tests in PCMark are designed to represent typical home user workloads. Running PCMark produces a score with higher numbers indicating better performance. Sever... | PCMark | Technology | 178 |
1,928,089 | https://en.wikipedia.org/wiki/Conservation%20status | The conservation status of a group of organisms (for instance, a species) indicates whether the group still exists and how likely the group is to become extinct in the near future. Many factors are taken into account when assessing conservation status: not simply the number of individuals remaining, but the overall inc... | Conservation status | Biology | 1,729 |
592,830 | https://en.wikipedia.org/wiki/Monkeys%20and%20apes%20in%20space | Before humans went into space in the 1960s, several other animals were launched into space, including numerous other primates, so that scientists could investigate the biological effects of spaceflight. The United States launched flights containing primate passengers primarily between 1948 and 1961 with one flight in 1... | Monkeys and apes in space | Chemistry,Biology | 2,460 |
734,787 | https://en.wikipedia.org/wiki/Automatic%20differentiation | In mathematics and computer algebra, automatic differentiation (auto-differentiation, autodiff, or AD), also called algorithmic differentiation, computational differentiation, and differentiation arithmetic is a set of techniques to evaluate the partial derivative of a function specified by a computer program. Automati... | Automatic differentiation | Mathematics,Technology | 5,083 |
24,950,345 | https://en.wikipedia.org/wiki/Microscale%20thermophoresis | Microscale thermophoresis (MST) is a technology for the biophysical analysis of interactions between biomolecules. Microscale thermophoresis is based on the detection of a temperature-induced change in fluorescence of a target as a function of the concentration of a non-fluorescent ligand. The observed change in fluore... | Microscale thermophoresis | Physics,Chemistry,Biology | 1,290 |
20,957,324 | https://en.wikipedia.org/wiki/Bondi%20accretion | In astrophysics, the Bondi accretion (also called Bondi–Hoyle–Lyttleton accretion), named after Hermann Bondi, is spherical accretion onto a compact object traveling through the interstellar medium. It is generally used in the context of neutron star and black hole accretion. To achieve an approximate form of the Bondi... | Bondi accretion | Physics,Astronomy | 352 |
13,992,374 | https://en.wikipedia.org/wiki/Urban%20Land | Urban Land is a magazine published by the Urban Land Institute (ULI). It is published 4 times a year and is headquartered in Washington, D.C. Urban Land'''s articles cover a wide range of international topics, while concentrating on the needs of professionals in the real estate development and land use industry.Urban L... | Urban Land | Engineering | 408 |
7,552,376 | https://en.wikipedia.org/wiki/Broadcast%20signal%20intrusion | A broadcast signal intrusion is the hijacking of broadcast signals of radio, television stations, cable television broadcast feeds or satellite signals without permission or licence. Hijacking incidents have involved local TV and radio stations as well as cable and national networks.
Although television, cable, and s... | Broadcast signal intrusion | Engineering | 6,725 |
1,085,585 | https://en.wikipedia.org/wiki/FreeJ | FreeJ is a modular software vision mixer for Linux systems. It is capable of real-time video manipulation, for amateur and professional uses. It can be used as an instrument in the fields of dance theater, VJing and television. FreeJ supports the input of multiple layers of video footage, which can be filtered through ... | FreeJ | Technology | 364 |
3,559,747 | https://en.wikipedia.org/wiki/Staggered%20conformation | In organic chemistry, a staggered conformation is a chemical conformation of an ethane-like moiety abcX–Ydef in which the substituents a, b, and c are at the maximum distance from d, e, and f; this requires the torsion angles to be 60°. It is the opposite of an eclipsed conformation, in which those substituents are as ... | Staggered conformation | Physics,Chemistry | 219 |
6,962,728 | https://en.wikipedia.org/wiki/Magnetic%20resonance%20elastography | Magnetic resonance elastography (MRE) is a form of elastography that specifically leverages MRI to quantify and subsequently map the mechanical properties (elasticity or stiffness) of soft tissue. First developed and described at Mayo Clinic by Muthupillai et al. in 1995, MRE has emerged as a powerful, non-invasive dia... | Magnetic resonance elastography | Chemistry | 1,996 |
5,561,097 | https://en.wikipedia.org/wiki/Flood%20bypass | A flood bypass is a region of land or a large man-made structure that is designed to convey excess flood waters from a river or stream in order to reduce the risk of flooding on the natural river or stream near a key point of interest, such as a city. Flood bypasses, sometimes called floodways, often have man-made div... | Flood bypass | Physics,Chemistry,Engineering,Environmental_science | 383 |
2,861,533 | https://en.wikipedia.org/wiki/Heap%20leaching | Heap leaching is an industrial mining process used to extract precious metals, copper, uranium, and other compounds from ore using a series of chemical reactions that absorb specific minerals and re-separate them after their division from other earth materials. Similar to in situ mining, heap leach mining differs in t... | Heap leaching | Chemistry,Materials_science | 3,037 |
18,213,407 | https://en.wikipedia.org/wiki/Kinetic%20capillary%20electrophoresis | Kinetic capillary electrophoresis or KCE is capillary electrophoresis of molecules that interact during electrophoresis.
KCE was introduced and developed by Professor Sergey Krylov and his research group at York University, Toronto, Canada. It serves as a conceptual platform for development of homogeneous chemical aff... | Kinetic capillary electrophoresis | Chemistry,Biology | 257 |
16,521,792 | https://en.wikipedia.org/wiki/Particle%20size%20analysis | Particle size analysis, particle size measurement, or simply particle sizing, is the collective name of the technical procedures, or laboratory techniques which determines the size range, and/or the average, or mean size of the particles in a powder or liquid sample.
Particle size analysis is part of particle science,... | Particle size analysis | Chemistry | 2,201 |
13,146,531 | https://en.wikipedia.org/wiki/Differentiation%20of%20trigonometric%20functions | The differentiation of trigonometric functions is the mathematical process of finding the derivative of a trigonometric function, or its rate of change with respect to a variable. For example, the derivative of the sine function is written (a) = cos(a), meaning that the rate of change of sin(x) at a particular angle x ... | Differentiation of trigonometric functions | Mathematics | 1,531 |
70,121,241 | https://en.wikipedia.org/wiki/Alterococcus%20agarolyticus | Alterococcus agarolyticus is a Gram-negative, facultatively anaerobic, halophilic and thermophilic bacterium from the genus of Alterococcus.
References
Verrucomicrobiota
Bacteria described in 1999 | Alterococcus agarolyticus | Biology | 53 |
73,457,377 | https://en.wikipedia.org/wiki/N%2CN%27-Diallyl-L-tartardiamide | {{DISPLAYTITLE:N,N'-Diallyl-L-tartardiamide}}
N,N′-Diallyl-L-tartardiamide (DATD) is a crosslinking agent for polyacrylamide gels, e.g., as used for SDS-PAGE. Compared to bisacrylamide gels, DATD gels have a stronger interaction with glass, and therefore are used in applications where the polyacrylamide gel acts as a ... | N,N'-Diallyl-L-tartardiamide | Chemistry,Materials_science | 238 |
13,351,034 | https://en.wikipedia.org/wiki/Werner%20Kuhn%20%28chemist%29 | Werner Kuhn (February 6, 1899 – August 27, 1963) was a Swiss physical chemist who developed the first model of the viscosity of polymer solutions using statistical mechanics. He is known for being the first to apply Boltzmann's entropy formula:
to the modeling of rubber molecules, i.e. the "rubber band entropy model"... | Werner Kuhn (chemist) | Physics,Chemistry | 352 |
36,353,404 | https://en.wikipedia.org/wiki/Hypocreopsis%20rhododendri | Hypocreopsis rhododendri is an ascomycete fungus. It is commonly known as hazel gloves due to the resemblance of its orange-brown, radiating lobular ascocarp to rubber gloves, and because it is found on hazel (Corylus avellana) stems.
Distribution
Hypocreopsis rhododendri is found on the hyperoceanic west coasts of Br... | Hypocreopsis rhododendri | Biology | 308 |
1,174,172 | https://en.wikipedia.org/wiki/Current%20loop | In electrical signalling an analog current loop is used where a device must be monitored or controlled remotely over a pair of conductors. Only one current level can be present at any time.
A major application of current loops is the industry de facto standard 4–20 mA current loop for process control applications, whe... | Current loop | Engineering | 2,309 |
49,548,197 | https://en.wikipedia.org/wiki/Passive%20Wi-Fi | Passive Wi-Fi is a refinement of Wi-Fi technology that uses passive reflection to reduce energy consumption.
Wi-Fi energy use
Wi-Fi use can account for up to 60 percent of a smartphone's energy consumption. When not connected to a network, Wi-Fi consumes energy because the device constantly searches for a signal.
B... | Passive Wi-Fi | Technology | 273 |
13,182,827 | https://en.wikipedia.org/wiki/Weld%20quality%20assurance | Weld quality assurance is the use of technological methods and actions to test or assure the quality of welds, and secondarily to confirm the presence, location and coverage of welds. In manufacturing, welds are used to join two or more metal surfaces. Because these connections may encounter loads and fatigue during pr... | Weld quality assurance | Engineering | 2,111 |
1,419,696 | https://en.wikipedia.org/wiki/The%20Cult%20of%20Mac | The Cult of Mac is a book by Leander Kahney. The book discusses fanaticism about the Apple product line and brand loyalty. Kahney released a later book titled The Cult of iPod.
The cover of the book features the Apple logo shaved into the back of a person's head.
See also
Apple evangelist
Reality distortion field
Cri... | The Cult of Mac | Technology | 96 |
65,597,539 | https://en.wikipedia.org/wiki/Budget-balanced%20mechanism | In mechanism design, a branch of economics, a weakly-budget-balanced (WBB) mechanism is a mechanism in which the total payment made by the participants is at least 0. This means that the mechanism operator does not incur a deficit, i.e., does not have to subsidize the market. Weak budget balance is considered a necessa... | Budget-balanced mechanism | Mathematics | 708 |
10,548,751 | https://en.wikipedia.org/wiki/United%20States%20biological%20weapons%20program | The United States biological weapons program officially began in spring 1943 on orders from U.S. President Franklin D. Roosevelt. Research continued following World War II as the U.S. built up a large stockpile of biological agents and weapons. Over the course of its 27-year history, the program weaponized and stockpil... | United States biological weapons program | Technology,Engineering | 7,667 |
35,342,049 | https://en.wikipedia.org/wiki/Illumina%20dye%20sequencing | Illumina dye sequencing is a technique used to determine the series of base pairs in DNA, also known as DNA sequencing. The reversible terminated chemistry concept was invented by Bruno Canard and Simon Sarfati at the Pasteur Institute in Paris. It was developed by Shankar Balasubramanian and David Klenerman of Cambrid... | Illumina dye sequencing | Biology | 2,131 |
17,919,325 | https://en.wikipedia.org/wiki/Piperitone | Piperitone is a natural monoterpene ketone which is a component of some essential oils. Both stereoisomers, the D-form and the L-form, are known. The D-form has a peppermint-like aroma and has been isolated from the oils of plants from the genera Cymbopogon, Andropogon, and Mentha. The L-form has been isolated from S... | Piperitone | Chemistry | 386 |
25,250,224 | https://en.wikipedia.org/wiki/Fluoroethyl | Fluoroethyl is an organofluorine functional group in chemistry. Its chemical formulas are (1-fluoroethyl) and (2-fluoroethyl). The general formulas of a compound containing this group are and , where R stands for an organyl group. An example of a compound containing the fluoroethyl group is (2-fluoroethyl)benzene , ... | Fluoroethyl | Chemistry | 107 |
166,354 | https://en.wikipedia.org/wiki/Barotropic%20vorticity%20equation | The barotropic vorticity equation assumes the atmosphere is nearly barotropic, which means that the direction and speed of the geostrophic wind are independent of height. In other words, there is no vertical wind shear of the geostrophic wind. It also implies that thickness contours (a proxy for temperature) are para... | Barotropic vorticity equation | Physics,Chemistry | 421 |
16,961,891 | https://en.wikipedia.org/wiki/Self-confirming%20equilibrium | In game theory, self-confirming equilibrium is a generalization of Nash equilibrium for extensive form games, in which players correctly predict the moves their opponents make, but may have misconceptions about what their opponents would do at information sets that are never reached when the equilibrium is played. Self... | Self-confirming equilibrium | Mathematics | 213 |
5,063,129 | https://en.wikipedia.org/wiki/Park%20Grass%20Experiment | The Park Grass Experiment is a biological study originally set up to test the effect of fertilizers and manures on hay yields. The scientific experiment is located at the Rothamsted Research in the English county of Hertfordshire, and is notable as one of the longest-running experiments of modern science, as it was ini... | Park Grass Experiment | Biology | 285 |
47,348,378 | https://en.wikipedia.org/wiki/KTDU-35 | The KTDU-35 (GRAU Index 11D62) was a Soviet spacecraft propulsion system composed of two liquid rocket engines, the primary, S5.60 (SKD) and the secondary S5.35 (DKD), fed from the same propellant tanks. Both engines burn UDMH and AK27I in the gas generator cycle. It was designed by OKB-2, the famous Isaev Design Burea... | KTDU-35 | Astronomy | 390 |
56,981,810 | https://en.wikipedia.org/wiki/ETrice | eTrice is a CASE-Tool for the development of real-time software. It is an official Eclipse project.
The software architecture tooling eTrice is implementing the domain specific language Real-Time Object-Oriented Modeling ROOM. It provides code generators for C, C++ and Java. Each release is accompanied with tutorials ... | ETrice | Technology | 183 |
77,250,718 | https://en.wikipedia.org/wiki/UGC%20711 | UGC 711 is a relatively nearby spiral galaxy located in the constellation of Cetus. Estimated to be located 77 million light-years from Earth, the galaxy's luminosity class is IV and it has a HI line width region. It belongs to the equatorial region of Eridanus Void with an arcsec approximation of ≈ 250.
Morphology
U... | UGC 711 | Astronomy | 242 |
33,482,931 | https://en.wikipedia.org/wiki/Smart%20traffic%20light | Smart traffic lights or Intelligent traffic lights are a vehicle traffic control system that combines traditional traffic lights with an array of sensors and artificial intelligence to intelligently route vehicle and pedestrian traffic. They can form part of a bigger intelligent transport system.
Research
A technolog... | Smart traffic light | Technology | 868 |
30,856,833 | https://en.wikipedia.org/wiki/C22H42O4 | {{DISPLAYTITLE:C22H42O4}}
The molecular formula C22H42O4 (molar mass: 370.56 g/mol) may refer to:
Bis(2-ethylhexyl) adipate
Dioctyl adipate
Docosanedioic acid
Molecular formulas | C22H42O4 | Physics,Chemistry | 68 |
8,203,821 | https://en.wikipedia.org/wiki/Nader%20Engheta | Nader Engheta (; born October 8, 1955) is an Iranian-American scientist. He has made pioneering contributions to the fields of metamaterials, transformation optics, plasmonic optics, nanophotonics, graphene photonics, nano-materials, nanoscale optics, nano-antennas and miniaturized antennas, physics and reverse-enginee... | Nader Engheta | Materials_science | 1,534 |
42,388,127 | https://en.wikipedia.org/wiki/Lenovo%20A526 | Lenovo A526 is a dual-SIM, quad-core MediaTek Cortex A7 based smartphone launched on 2 April 2014. It released on April 5, 2014.
Design and features
The CPU is Mediatek Cortex A7 1.3 GHz quad-core processor. It has a 4.5 inch FWVGA screen with a resolution of 480x854 px.
RAM memory is 1 GB, internal eMMC memory size... | Lenovo A526 | Technology | 163 |
3,615,907 | https://en.wikipedia.org/wiki/Oblique%20wing | An oblique wing (also called a slewed wing) is a variable geometry wing concept. On an aircraft so equipped, the wing is designed to rotate on center pivot, so that one tip is swept forward while the opposite tip is swept aft. By changing its sweep angle in this way, drag can be reduced at high speed (with the wing swe... | Oblique wing | Physics,Engineering | 1,253 |
35,467,350 | https://en.wikipedia.org/wiki/Morchella%20diminutiva | Morchella diminutiva is a species of fungus in the family Morchellaceae native to North America. Described as new to science in 2012, it occurs in eastern North America, usually near Fraxinus americana and Liriodendron tulipifera, but also under other hardwoods like species of Carya.
References
External links
diminu... | Morchella diminutiva | Biology | 88 |
3,246,442 | https://en.wikipedia.org/wiki/Allura%20Red%20AC | Allura Red AC, also known as FD&C Red 40 or E129, is a red azo dye commonly used in food. It was developed in 1971 by the Allied Chemical Corporation, who gave the substance its name.
It is usually supplied as its red sodium salt but can also be used as the calcium and potassium salts. These salts are soluble in water... | Allura Red AC | Chemistry | 950 |
56,221,934 | https://en.wikipedia.org/wiki/Dataism | Dataism is a term that has been used to describe the mindset or philosophy created by the emerging significance of big data. It was first used by David Brooks in The New York Times in 2013. The term has been expanded to describe what historian Yuval Noah Harari, in his book Homo Deus: A Brief History of Tomorrow from 2... | Dataism | Mathematics,Technology | 885 |
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