id int64 580 79M | url stringlengths 31 175 | text stringlengths 9 245k | source stringlengths 1 109 | categories stringclasses 160
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4,033,192 | https://en.wikipedia.org/wiki/Space%20dock | A space dock is a hypothesised type of space station that is able to repair or build spacecraft similar to maritime shipyards on Earth. They remove the need for new spacecraft to perform a space launch to reach space and existing spacecraft to make an atmospheric entry and landing for repair work. They currently only e... | Space dock | Astronomy,Technology | 1,207 |
18,662,971 | https://en.wikipedia.org/wiki/DCrk | DCrk (Drosophila ortholog of Crk) is the Drosophila melanogaster ortholog of the mammalian proteins Crk and CrkL.
Structure and function
DCrk includes one SH2 domain followed by two SH3 domains and interacts with the MyoBlast City (MCB) protein. The DCrk protein is expressed during embryogenesis, declines during the l... | DCrk | Chemistry | 117 |
33,970,953 | https://en.wikipedia.org/wiki/Film%20blowing%20machine | A film blowing machine involves one process used to make plastic film. Extruded tubular processing is most often used with polyethylene films but can be used with other polymers.
The film may be laminating film, shrink film, agricultural covering film, bags or film for textiles and clothing, and other packaging materi... | Film blowing machine | Engineering | 824 |
9,069,542 | https://en.wikipedia.org/wiki/Napakivi | Napakivi (pole/navel stone) or tonttukivi (elf stone) is a traditional Finnish name for a standing stone in the middle of a field or another central spot.
Generally speaking napakivi are unhewn stones that people have set upright. Some of them may have been erected by withdrawal of the receding ice-masses after the ic... | Napakivi | Physics | 484 |
68,377,408 | https://en.wikipedia.org/wiki/1%2C2-Bis%28diphenylphosphino%29benzene | 1,2-Bis(diphenylphosphino)benzene (dppbz) is an organophosphorus compound with the formula C6H4(PPh2)2 (Ph = C6H5). Classified as a diphosphine ligand, it is a common bidentate ligand in coordination chemistry. It is a white, air-stable solid. As a chelating ligand, dppbz is very similar to 1,2-bis(diphenylphosphino... | 1,2-Bis(diphenylphosphino)benzene | Chemistry | 128 |
12,814,339 | https://en.wikipedia.org/wiki/Cambridge%20Crystallographic%20Data%20Centre | The Cambridge Crystallographic Data Centre (CCDC) is a non-profit organisation based in Cambridge, England. Its primary activity is the compilation and maintenance of the Cambridge Structural Database, a database of small molecule crystal structures. They also perform analysis on the database for the benefit of the sci... | Cambridge Crystallographic Data Centre | Chemistry,Materials_science | 458 |
32,112,885 | https://en.wikipedia.org/wiki/AMMECR1 | In molecular biology, the AMMECR1 protein (Alport syndrome, intellectual disability, midface hypoplasia and elliptocytosis chromosomal region gene 1 protein) is a protein encoded by the AMMECR1 gene on human chromosome Xq22.3.
The contiguous gene deletion syndrome is characterised by Alport syndrome (A), intellectual... | AMMECR1 | Biology | 526 |
24,057,347 | https://en.wikipedia.org/wiki/WASP-16 | WASP-16 is a magnitude 11 yellow dwarf main sequence star, with characteristics similar to the Sun, located in the Virgo constellation.
Planetary system
In 2009, a planet of the star was announced by the SuperWASP project. It appears to be another hot Jupiter type exoplanet.
In 2024, a candidate mini-neptune was dete... | WASP-16 | Astronomy | 156 |
593,338 | https://en.wikipedia.org/wiki/Bimetal | Bimetal refers to an object that is composed of two separate metals joined together. Instead of being a mixture of two or more metals, like alloys, bimetallic objects consist of layers of different metals. Trimetal and tetrametal refer to objects composed of three and four separate metals respectively. A bimetal bar is... | Bimetal | Physics,Chemistry,Materials_science,Engineering | 521 |
36,875,991 | https://en.wikipedia.org/wiki/Muhammad%20Jamil%20Ahmad%20Mulla | Muhammad Jamil Ahmad Mulla (; born 12 December 1946) is a Saudi engineer who was minister of communications and information technology from 2003 to 2014.
Early life and education
Mulla was born in Madinah on 12 December 1946.
Mulla is a graduate of King Saud University where he received a Bachelor of Science degree ... | Muhammad Jamil Ahmad Mulla | Engineering | 301 |
70,076,218 | https://en.wikipedia.org/wiki/HM%20Sagittae | HM Sagittae is a dusty-type symbiotic nova in the northern constellation of Sagitta. It was discovered by O. D. Dokuchaeva and colleagues in 1975 when it increased in brightness by six magnitudes (a factor of around 250 brighter). The object displays an emission line spectrum similar to a planetary nebula and was detec... | HM Sagittae | Astronomy | 562 |
3,878 | https://en.wikipedia.org/wiki/Biostatistics | Biostatistics (also known as biometry) is a branch of statistics that applies statistical methods to a wide range of topics in biology. It encompasses the design of biological experiments, the collection and analysis of data from those experiments and the interpretation of the results.
History
Biostatistics and genet... | Biostatistics | Engineering,Biology | 6,812 |
1,005,746 | https://en.wikipedia.org/wiki/Supercritical%20flow | A supercritical flow is a flow whose velocity is larger than the wave velocity. The analogous condition in gas dynamics is supersonic speed.
According to the website Civil Engineering Terms, supercritical flow is defined as follows:
The flow at which depth of the channel is less than critical depth, velocity of flo... | Supercritical flow | Chemistry,Engineering | 348 |
28,093,559 | https://en.wikipedia.org/wiki/Rate%20Based%20Satellite%20Control%20Protocol | In computer networking, Rate Based Satellite Control Protocol (RBSCP) is a tunneling method proposed by Cisco to improve the performance of satellite network links with high latency and error rates.
The problem RBSCP addresses is that the long RTT on the link keeps TCP virtual circuits in slow start for a long time. T... | Rate Based Satellite Control Protocol | Technology,Engineering | 270 |
5,844,960 | https://en.wikipedia.org/wiki/Oprelvekin | Oprelvekin is recombinant interleukin eleven (IL-11), a thrombopoietic growth factor that directly stimulates the proliferation of hematopoietic stem cells and megakaryocyte progenitor cells and induces megakaryocyte maturation resulting in increased platelet production. It is marketed under the trade name Neumega.
Ch... | Oprelvekin | Chemistry | 2,196 |
4,322 | https://en.wikipedia.org/wiki/Borel%20measure | In mathematics, specifically in measure theory, a Borel measure on a topological space is a measure that is defined on all open sets (and thus on all Borel sets). Some authors require additional restrictions on the measure, as described below.
Formal definition
Let be a locally compact Hausdorff space, and let be t... | Borel measure | Physics,Mathematics | 1,197 |
41,825,367 | https://en.wikipedia.org/wiki/List%20of%20email%20archive%20software | This article provides a list of software products and cloud-based services used for email archiving.
Email archiving has several objectives: long-term preservation of knowledge, regulatory compliance, legal protection, etc. Those different goals may call for different solutions. For example, the preservation of histor... | List of email archive software | Technology | 350 |
35,858,696 | https://en.wikipedia.org/wiki/Langdon%20%26%20Seah | Langdon & Seah is an international construction consultancy firm in Asia operating independently in 13 countries from 39 offices and a staff resources of nearly 3,000.
History
The firm has its roots traced to the quantity surveying practice in the United Kingdom of "Horace W Langdon & Every", founded in 1919, which h... | Langdon & Seah | Engineering | 692 |
15,603,775 | https://en.wikipedia.org/wiki/Nitrogen%E2%80%93phosphorus%20detector | The nitrogen–phosphorus detector (NPD) is also known as thermionic specific detector (TSD) is a detector commonly used with gas chromatography, in which thermal energy is used to ionize an analyte. It is a type of flame thermionic detector (FTD), the other being the alkali flame-ionization detector (AFID also known as ... | Nitrogen–phosphorus detector | Chemistry | 268 |
38,921,516 | https://en.wikipedia.org/wiki/CloudBees | CloudBees is an enterprise software delivery company. Sacha Labourey and Francois Dechery co-founded the company in early 2010, and investors include Matrix Partners, Lightspeed Venture Partners, HSBC, Verizon Ventures, Golub Capital, Goldman Sachs, Morgan Stanley, and Bridgepoint Group.
CloudBees is headquartered in ... | CloudBees | Technology | 500 |
12,101,061 | https://en.wikipedia.org/wiki/Anil%20Aggrawal%27s%20Internet%20Journal%20of%20Forensic%20Medicine%20and%20Toxicology | Anil Aggrawal's Internet Journal of Forensic Medicine and Toxicology is an online scientific journal covering forensic medicine and toxicology and allied subjects such as criminology, police science, and deviant behavior. It is one of the most widely read and popular peer-reviewed forensic medicine journals in the worl... | Anil Aggrawal's Internet Journal of Forensic Medicine and Toxicology | Environmental_science | 234 |
40,951,771 | https://en.wikipedia.org/wiki/Barium%20iodate | Barium iodate is an inorganic chemical compound with the chemical formula Ba(IO3)2. It is a white, granular substance.
Derivation
Barium iodate can be derived either as a product of a reaction of iodine and barium hydroxide or by combining barium chlorate with potassium iodate.
Chemical properties
The compound is s... | Barium iodate | Chemistry | 132 |
11,871,683 | https://en.wikipedia.org/wiki/Epsilon%20Eridani%20b | Epsilon Eridani b, also known as AEgir , is an exoplanet approximately 10.5 light-years away orbiting the star Epsilon Eridani, in the constellation of Eridanus (the River). The planet was discovered in 2000, and as of 2024 remains the only confirmed planet in its planetary system. It orbits at around 3.5 AU with a per... | Epsilon Eridani b | Astronomy | 1,129 |
37,249,254 | https://en.wikipedia.org/wiki/NABERS | NABERS, the National Australian Built Environment Rating System is an Australian national initiative, managed by the Government of New South Wales' Department of Climate Change, Energy, the Environment and Water (New South Wales) on behalf of the Australian Government, that measures and compares the environmental perfo... | NABERS | Technology,Engineering | 2,172 |
80,322 | https://en.wikipedia.org/wiki/Lev%20Landau | Lev Davidovich Landau (; 22 January 1908 – 1 April 1968) was a Soviet physicist who made fundamental contributions to many areas of theoretical physics. He was considered as one of the last scientists who were universally well-versed and made seminal contributions to all branches of physics. He is credited with laying ... | Lev Landau | Physics,Chemistry,Materials_science | 3,416 |
59,471,688 | https://en.wikipedia.org/wiki/Thermoelectric%20acclimatization | Thermoelectric acclimatization depends on the possibility of a Peltier cell of absorbing heat on one side and rejecting heat on the other side. Consequently, it is possible to use them for heating on one side and cooling on the other and as a temperature control system.
Peltier cell heat pump
A typical Peltier cell ... | Thermoelectric acclimatization | Physics,Chemistry,Mathematics | 554 |
65,781,618 | https://en.wikipedia.org/wiki/Iodine%20nitrate | Iodine nitrate is a chemical with formula INO3. It is a covalent molecule with a structure of I–O–NO2.
Preparation
The compound was first produced by the reaction of mercury(II) nitrate and iodine in ether.
Other nitrate salts and solvents can also be used.
As a gas it is slightly unstable, decaying with a rate con... | Iodine nitrate | Chemistry | 146 |
4,252,869 | https://en.wikipedia.org/wiki/Q%20%28number%20format%29 | The Q notation is a way to specify the parameters of a binary fixed point number format. For example, in Q notation, the number format denoted by Q8.8 means that the fixed point numbers in this format have 8 bits for the integer part and 8 bits for the fraction part.
A number of other notations have been used for the ... | Q (number format) | Mathematics | 1,589 |
3,610,259 | https://en.wikipedia.org/wiki/Chip%20art | Chip art, also known as silicon art, chip graffiti or silicon doodling, refers to microscopic artwork built into integrated circuits, also called chips or ICs. Since ICs are printed by photolithography, not constructed a component at a time, there is no additional cost to include features in otherwise unused space on ... | Chip art | Technology,Engineering | 788 |
11,793,306 | https://en.wikipedia.org/wiki/Septoria%20lycopersici | Septoria lycopersici is a fungal pathogen that is most commonly found infecting tomatoes. It causes one of the most destructive diseases of tomatoes and attacks tomatoes during any stage of development.
Host and symptoms
Septoria lycopersici infects the tomato leaves via the stomata and also by direct penetration of ... | Septoria lycopersici | Biology | 571 |
27,397,118 | https://en.wikipedia.org/wiki/Endocochlear%20potential | The endocochlear potential (EP; also called endolymphatic potential) is the positive voltage of 80-100mV seen in the cochlear endolymphatic spaces. Within the cochlea, the EP varies in magnitude all along its length. When a sound is presented, the endocochlear potential changes either positive or negative in the endoly... | Endocochlear potential | Biology | 339 |
27,258,886 | https://en.wikipedia.org/wiki/Caterpillar%20tree | In graph theory, a caterpillar or caterpillar tree is a tree in which all the vertices are within distance 1 of a central path.
Caterpillars were first studied in a series of papers by Harary and Schwenk. The name was suggested by Arthur Hobbs. As colorfully write, "A caterpillar is a tree which metamorphoses into a ... | Caterpillar tree | Chemistry,Mathematics | 1,175 |
256,322 | https://en.wikipedia.org/wiki/Peter%20Guthrie%20Tait | Peter Guthrie Tait (28 April 18314 July 1901) was a Scottish mathematical physicist and early pioneer in thermodynamics. He is best known for the mathematical physics textbook Treatise on Natural Philosophy, which he co-wrote with Lord Kelvin, and his early investigations into knot theory.
His work on knot theory con... | Peter Guthrie Tait | Physics,Chemistry | 2,318 |
69,264,706 | https://en.wikipedia.org/wiki/Micronekton | A micronekton is a group of organisms of 2 to 20 cm in size which are able to swim independently of ocean currents. The word 'nekton' is derived from the Greek νήκτον, translit. nekton, meaning "to swim", and was coined by Ernst Haeckel in 1890.
Overview
Micronekton organisms are ubiquitous in the world's oceans and ... | Micronekton | Chemistry,Biology | 4,478 |
22,821,969 | https://en.wikipedia.org/wiki/Spherical%20code | In geometry and coding theory, a spherical code with parameters (n,N,t) is a set of N points on the unit hypersphere in n dimensions for which the dot product of unit vectors from the origin to any two points is less than or equal to t. The kissing number problem may be stated as the problem of finding the maximal N f... | Spherical code | Mathematics | 131 |
27,887,460 | https://en.wikipedia.org/wiki/Cloud%20storage%20gateway | A cloud storage gateway is a hybrid cloud storage device, implemented in hardware or software, which resides at the customer premises and translates cloud storage APIs such as SOAP or REST to block-based storage protocols such as iSCSI or Fibre Channel or file-based interfaces such as NFS or SMB.
According to a 2011 r... | Cloud storage gateway | Engineering | 1,217 |
884,352 | https://en.wikipedia.org/wiki/Friedrichs%20extension | In functional analysis, the Friedrichs extension is a canonical self-adjoint extension of a non-negative densely defined symmetric operator. It is named after the mathematician Kurt Friedrichs. This extension is particularly useful in situations where an operator may fail to be essentially self-adjoint or whose essenti... | Friedrichs extension | Mathematics | 741 |
75,103,460 | https://en.wikipedia.org/wiki/Corrosion%20Engineering%2C%20Science%20and%20Technology | Corrosion Engineering, Science and Technology (CEST) is a peer-reviewed scientific journal published by Taylor & Francis on behalf of IOM3 covering corrosion engineering, corrosion science, and corrosion control.
History
The journal was founded in 1965 as the British Corrosion Journal (BCJ). It was launched as a publ... | Corrosion Engineering, Science and Technology | Materials_science,Engineering | 377 |
22,899,297 | https://en.wikipedia.org/wiki/Rate%20of%20return%20on%20a%20portfolio | The rate of return on a portfolio is the ratio of the net gain or loss (which is the total of net income, foreign currency appreciation and capital gain, whether realized or not) which a portfolio generates, relative to the size of the portfolio. It is measured over a period of time, commonly a year.
Calculation
The r... | Rate of return on a portfolio | Mathematics | 1,396 |
375,503 | https://en.wikipedia.org/wiki/Frieze%20group | In mathematics, a frieze or frieze pattern is a two-dimensional design that repeats in one direction. The term is derived from architecture and decorative arts, where such repeating patterns are often used. (See frieze.) Frieze patterns can be classified into seven types according to their symmetries. The set of symmet... | Frieze group | Physics,Mathematics | 1,325 |
540,904 | https://en.wikipedia.org/wiki/Category%20of%20preordered%20sets | In mathematics, the category Ord has preordered sets as objects and order-preserving functions as morphisms. This is a category because the composition of two order-preserving functions is order preserving and the identity map is order preserving. While Ord is a category with different properties, the category of preor... | Category of preordered sets | Mathematics | 488 |
22,309,585 | https://en.wikipedia.org/wiki/Names%20for%20the%20number%200 | There are several names for the number 0 in different languages.
References
0 (number)
Integers
0 | Names for the number 0 | Mathematics | 21 |
5,574,761 | https://en.wikipedia.org/wiki/Microsoft%20Interface%20Definition%20Language | Microsoft Interface Definition Language (MIDL) is a text-based interface description language from Microsoft, based on the DCE/RPC IDL which it extends for use with the Microsoft Component Object Model. Its compiler is also called MIDL.
Version History
MIDL 1.0 is a standard DCE/RPC IDL with enhancements made for def... | Microsoft Interface Definition Language | Technology | 406 |
24,261,777 | https://en.wikipedia.org/wiki/Bu%20Tinah | Bu Tinah (, Būṭīnah, ) is a tiny archipelago amid extensive coral formations and seagrass beds some 25 km south of Zirku and 35 north of Marawah in the United Arab Emirates.
Found in the waters of Abu Dhabi, it is protected as a private nature reserve. Bu Tinah Island, rich in biodiversity, lies within the Marawah Mar... | Bu Tinah | Biology | 833 |
37,838,550 | https://en.wikipedia.org/wiki/2%2C6-Diacetylpyridine | 2,6-Diacetylpyridine is an organic compound with the formula C5H3N(C(O)CH3)2. It is a white solid that is soluble in organic solvents. It is a disubstituted pyridine. It is a precursor to ligands in coordination chemistry.
Synthesis
The synthesis of 2,6-diacetylpyridine begins with oxidation of the methyl groups in ... | 2,6-Diacetylpyridine | Chemistry | 421 |
1,444,067 | https://en.wikipedia.org/wiki/IO.SYS | is an essential part of MS-DOS and Windows 9x. It contains the default MS-DOS device drivers (hardware interfacing routines) and the DOS initialization program.
Boot sequence
In the PC bootup sequence, the first sector of the boot disk is loaded into memory and executed. If this is the DOS boot sector, it loads the f... | IO.SYS | Technology | 563 |
12,800,909 | https://en.wikipedia.org/wiki/Gross%20merchandise%20volume | Gross merchandise volume (alternatively gross merchandise value or GMV) is a term used in online retailing to indicate a total sales monetary-value (e.g. in U.S. dollars or Euros) for merchandise sold through a particular marketplace over a certain time frame. GMV includes any fees or other deductions which a seller mi... | Gross merchandise volume | Technology | 221 |
449,166 | https://en.wikipedia.org/wiki/Cyclic%20permutation | In mathematics, and in particular in group theory, a cyclic permutation is a permutation consisting of a single cycle. In some cases, cyclic permutations are referred to as cycles; if a cyclic permutation has k elements, it may be called a k-cycle. Some authors widen this definition to include permutations with fixed p... | Cyclic permutation | Mathematics | 1,642 |
699,772 | https://en.wikipedia.org/wiki/Star%20number | In mathematics, a star number is a centered figurate number, a centered hexagram (six-pointed star), such as the Star of David, or the board Chinese checkers is played on.
The nth star number is given by the formula Sn = 6n(n − 1) + 1. The first 45 star numbers are 1, 13, 37, 73, 121, 181, 253, 337, 433, 541, 661, 793... | Star number | Mathematics | 700 |
7,074,871 | https://en.wikipedia.org/wiki/Lighting%20ratio | Lighting ratio in photography refers to the comparison of key light (the main source of light from which shadows fall) to the total fill light (the light that fills in the shadow areas). The higher the lighting ratio, the higher the contrast of the image; the lower the ratio, the lower the contrast. The lighting ratio ... | Lighting ratio | Mathematics,Engineering | 373 |
3,305,892 | https://en.wikipedia.org/wiki/CrypTool | CrypTool is an open-source project
that is a free e-learning software for illustrating cryptographic and cryptanalytic concepts.
History
The development of CrypTool started in 1998. Originally developed by German companies and universities, it is an open-source project since 2001.
Currently 4 versions of CrypTool ar... | CrypTool | Mathematics | 565 |
11,127,998 | https://en.wikipedia.org/wiki/Linochora%20graminis | Linochora graminis is a fungal plant pathogen.
References
External links
Index Fungorum
USDA ARS Fungal Database
Phyllachorales
Fungal plant pathogens and diseases
Fungus species | Linochora graminis | Biology | 40 |
8,887 | https://en.wikipedia.org/wiki/Direct%20product | In mathematics, one can often define a direct product of objects already known, giving a new one. This induces a structure on the Cartesian product of the underlying sets from that of the contributing objects. More abstractly, one talks about the product in category theory, which formalizes these notions.
Examples are... | Direct product | Mathematics | 1,884 |
12,487,179 | https://en.wikipedia.org/wiki/KLF1 | Krueppel-like factor 1 is a protein that in humans is encoded by the KLF1 gene. The gene for KLF1 is on the human chromosome 19 and on mouse chromosome 8. Krueppel-like factor 1 is a transcription factor that is necessary for the proper maturation of erythroid (red blood) cells.
Structure
The molecule has two domain... | KLF1 | Chemistry,Biology | 809 |
58,402,003 | https://en.wikipedia.org/wiki/Scramspace | Scramspace was a hypersonic engine research project established by the University of Queensland, Australia's Centre for Hypersonics. It was a 1.8 meter long, free-flying, hypersonic scramjet. A scramjet is fundamentally an air-breathing engine that travels at hypersonic velocities. Built in Brisbane at an estimated co... | Scramspace | Engineering | 560 |
14,814,399 | https://en.wikipedia.org/wiki/Oxysterol-binding%20protein | The oxysterol-binding protein (OSBP)-related proteins (ORPs) are a family of lipid transfer proteins (LTPs). Concretely, they constitute a family of sterol and phosphoinositide binding and transfer proteins in eukaryotes that are conserved from yeast to humans. They are lipid-binding proteins implicated in many cellula... | Oxysterol-binding protein | Biology | 1,455 |
1,127,884 | https://en.wikipedia.org/wiki/Hamming%20weight | The Hamming weight of a string is the number of symbols that are different from the zero-symbol of the alphabet used. It is thus equivalent to the Hamming distance from the all-zero string of the same length. For the most typical case, a string of bits, this is the number of 1's in the string, or the digit sum of the b... | Hamming weight | Mathematics | 3,202 |
14,761,583 | https://en.wikipedia.org/wiki/PRDM2 | PR domain zinc finger protein 2 is a protein that in humans is encoded by the PRDM2 gene.
Function
This tumor suppressor gene is a member of a nuclear histone/protein methyltransferase superfamily. It encodes a zinc finger protein that can bind to retinoblastoma protein, estrogen receptor, and the TPA-responsive ele... | PRDM2 | Chemistry,Biology | 208 |
18,060,754 | https://en.wikipedia.org/wiki/Qualified%20Security%20Assessor | Qualified Security Assessor (QSA) is a designation conferred by the PCI Security Standards Council to those individuals that meet specific information security education requirements, have taken the appropriate training from the PCI Security Standards Council, are employees of a Qualified Security Assessor (QSA) compan... | Qualified Security Assessor | Technology,Engineering | 227 |
6,287,168 | https://en.wikipedia.org/wiki/Goodmans%20Industries | Goodmans was a British consumer electronics company. Dissolved 22 February 2022 according to companies house gov.uk
Goodmans was Founded in London, in 1923, the company started as a manufacturer of loudspeakers for public address systems.
Production and engineering originally took place in Wembley, London before mov... | Goodmans Industries | Engineering | 258 |
40,201,843 | https://en.wikipedia.org/wiki/HD%203322 | HD 3322 is a binary star system in the northern constellation of Andromeda. With an apparent visual magnitude of 6.51, it lies below the nominal brightness limit for visibility with the normal naked eye, but it is still possible to see the star with excellent vision under ideal seeing conditions. An annual parallax shi... | HD 3322 | Astronomy | 270 |
68,511,991 | https://en.wikipedia.org/wiki/Erbium%28III%29%20nitrate | Erbium(III) nitrate is an inorganic compound, a salt of erbium and nitric acid with the chemical formula Er(NO3)3. The compound forms pink crystals, readily soluble in water, also forms crystalline hydrates.
Synthesis
Dissolving metallic erbium in nitric acid:
Dissolving erbium oxide or hydroxide in nitric acid:
Rea... | Erbium(III) nitrate | Chemistry | 209 |
24,950,974 | https://en.wikipedia.org/wiki/Kenneth%20Karlin%20%28chemist%29 | Kenneth D. Karlin was born on October 30, 1948, in Pasadena, California, a professor of chemistry at Johns Hopkins University in Baltimore, Maryland. Research in his group focuses on coordination chemistry relevant to biological and environmental processes, involving copper or heme complexes. Of particular interest ar... | Kenneth Karlin (chemist) | Chemistry | 402 |
437,063 | https://en.wikipedia.org/wiki/Cinchonism | Cinchonism is a pathological condition caused by an overdose of quinine or its natural source, cinchona bark. Quinine and its derivatives are used medically to treat malaria and lupus erythematosus. In much smaller amounts, quinine is an ingredient of tonic drinks, acting as a bittering agent. Cinchonism can occur fro... | Cinchonism | Environmental_science | 533 |
70,936,988 | https://en.wikipedia.org/wiki/Stefan%20Karol%20Estreicher | Stefan Karol Estreicher is a theoretical physicist, currently serving as Paul Whitfield Horn Distinguished Professor Emeritus at the Physics Department of Texas Tech University in Lubbock, Texas.
Education
He received his PhD from the University of Zurich in 1982 and joined the faculty of Texas Tech University in 198... | Stefan Karol Estreicher | Physics | 352 |
71,407,626 | https://en.wikipedia.org/wiki/HD%20194612 | HD 194612 (HR 7812) is a solitary orange hued star located in the southern circumpolar constellation Octans. It has an apparent magnitude of 5.9, making it visible to the naked eye under ideal conditions. Parallax measurements place it at a distance of 760 light years and it has a low heliocentric radial velocity of .
... | HD 194612 | Astronomy | 188 |
3,242,208 | https://en.wikipedia.org/wiki/Game%20testing | Game testing, also called quality assurance (QA) testing within the video game industry, is a software testing process for quality control of video games. The primary function of game testing is the discovery and documentation of software defects. Interactive entertainment software testing is a highly technical field ... | Game testing | Engineering | 3,409 |
11,421,309 | https://en.wikipedia.org/wiki/Small%20nucleolar%20RNA%20R30/Z108 | In molecular biology, Small nucleolar RNA R30/Z108 (snoR30) is a C/D box small nucleolar RNA that acts as a methylation guide for 18S ribosomal RNA in plants.
References
External links
Small nuclear RNA | Small nucleolar RNA R30/Z108 | Chemistry | 55 |
2,629,440 | https://en.wikipedia.org/wiki/Natural%20material | A natural material is any product or physical matter that comes from plants, animals, or the ground which is not man-made. Minerals and the metals that can be extracted from them (without further modification) are also considered to belong into this category. Natural materials are used as building materials and clothin... | Natural material | Physics | 253 |
59,427,801 | https://en.wikipedia.org/wiki/NGC%204939 | NGC 4939 is a large spiral galaxy located in the constellation Virgo. It is located at a distance of about 120 million light years from Earth, which, given its apparent dimensions, means that NGC 4939 is about 190,000 light years across. It was discovered by William Herschel on March 25, 1786.
Characteristics
NGC 49... | NGC 4939 | Astronomy | 616 |
2,050,667 | https://en.wikipedia.org/wiki/Quantum%20tomography | Quantum tomography or quantum state tomography is the process by which a quantum state is reconstructed using measurements on an ensemble of identical quantum states. The source of these states may be any device or system which prepares quantum states either consistently into quantum pure states or otherwise into gener... | Quantum tomography | Physics | 4,340 |
60,586,231 | https://en.wikipedia.org/wiki/Zobellia%20galactanivorans | Zobellia galactanivorans is a gram-negative marine bacterium isolated from the surface of red algae of the coast of France. Z. galactanivorans forms yellow colonies with a bacillus or diplobacillus morphology. Furthermore, it is mesophilic and can grow degrade carrageenans and agars - both found in the cell wall of red... | Zobellia galactanivorans | Biology | 334 |
9,055,009 | https://en.wikipedia.org/wiki/Carbamino | Carbamino refers to an adduct generated by the addition of carbon dioxide to the free amino group of an amino acid or a protein, such as hemoglobin forming carbaminohemoglobin.
Determining quantity of carboamino in products
It is possible to determine how much carbamino is formed through the techniques of electron io... | Carbamino | Chemistry | 852 |
8,912,313 | https://en.wikipedia.org/wiki/Flower%20mantis | Flower mantises are praying mantises that use a special form of camouflage referred to as aggressive mimicry, which they not only use to attract prey, but avoid predators as well. These insects have specific colorations and behaviors that mimic flowers in their surrounding habitats.
This strategy has been observed in ... | Flower mantis | Biology | 804 |
70,327,630 | https://en.wikipedia.org/wiki/Great%20Mill%20Disaster | The Great Mill Disaster, also known as the Washburn A Mill explosion, occurred on May 2, 1878, in Minneapolis, Minnesota, United States. The disaster resulted in 18 deaths. The explosion occurred on a Thursday evening when an accumulation of flour dust inside the Washburn A Mill, the largest mill in the world at the ti... | Great Mill Disaster | Chemistry | 1,285 |
30,578,565 | https://en.wikipedia.org/wiki/Zoological%20specimen | A zoological specimen is an animal or part of an animal preserved for scientific use.
Various uses are: to verify the identity of a (species), to allow study, increase public knowledge of zoology.
Zoological specimens are extremely diverse. Examples are bird and mammal study skins, mounted specimens, skeletal material,... | Zoological specimen | Biology | 1,634 |
55,637,660 | https://en.wikipedia.org/wiki/HD%20111456 | HD 111456 is a yellow-white hued star in the northern circumpolar constellation of Ursa Major. It is dimly visible to the naked eye, having an apparent visual magnitude of 5.85. Based upon an annual parallax shift of as seen from Earth, it is located about from the Sun. The star is moving closer to the Sun with a rad... | HD 111456 | Astronomy | 290 |
12,355,383 | https://en.wikipedia.org/wiki/Pritchardia%20woodfordiana | Pritchardia woodfordiana is a species of flowering plant in the family Arecaceae. It is found only in Solomon Islands. It may be a form of Pritchardia pacifica.
References
Undescribed plant species
woodfordiana
Data deficient plants
Endemic flora of the Solomon Islands (archipelago)
Taxonomy articles created by Polbo... | Pritchardia woodfordiana | Biology | 73 |
31,228,061 | https://en.wikipedia.org/wiki/VR%20mode | VR mode or Video Recording mode is a feature on stand-alone consumer and computer DVD recorders that allows video recording and editing on a DVD rewritable disc.
In VR mode, users can create and rename titles for the scenes. Also, if a scene is deleted, the space allocated by it will be utilized later without the need... | VR mode | Technology | 632 |
65,226,978 | https://en.wikipedia.org/wiki/Slavic%20creation%20myth | The Slavic creation myth is a cosmogonic myth in Slavic mythology that explains how the world was created, who created it, and what principles guide it. This myth, in its Christianized form, survived until the nineteenth and twentieth century in various parts of the Slavdom in chronicles or folklore. In the Slavic myth... | Slavic creation myth | Astronomy | 3,204 |
2,302,081 | https://en.wikipedia.org/wiki/T-tubule | T-tubules (transverse tubules) are extensions of the cell membrane that penetrate into the center of skeletal and cardiac muscle cells. With membranes that contain large concentrations of ion channels, transporters, and pumps, T-tubules permit rapid transmission of the action potential into the cell, and also play an... | T-tubule | Chemistry | 2,565 |
448,933 | https://en.wikipedia.org/wiki/Primitive%20element%20theorem | In field theory, the primitive element theorem states that every finite separable field extension is simple, i.e. generated by a single element. This theorem implies in particular that all algebraic number fields over the rational numbers, and all extensions in which both fields are finite, are simple.
Terminology
Le... | Primitive element theorem | Mathematics | 1,080 |
67,835,347 | https://en.wikipedia.org/wiki/JUWELS | JUWELS (Jülich Wizard for European Leadership Science) is a supercomputer developed by Atos and hosted by the Jülich Supercomputing Centre (JSC) of the Forschungszentrum Jülich.
Supercomputer
It is capable of a theoretical peak of 70.980 petaflops (the speed is for JUWELS Booster Module) and it serves as the replaceme... | JUWELS | Technology | 417 |
13,191,396 | https://en.wikipedia.org/wiki/Canadian%20Association%20of%20Rocketry | The Canadian Association of Rocketry - L'Association Canadienne De Fuséologie (CAR-ACF) is a Canadian federal not for profit self-supporting association and governing body representing amateur/model rocketeers across Canada. The history of amateur/ model rocketry in Canada goes back to 1965 with its approval by the ... | Canadian Association of Rocketry | Astronomy | 349 |
5,293,306 | https://en.wikipedia.org/wiki/SNP%20array | In molecular biology, SNP array is a type of DNA microarray which is used to detect polymorphisms within a population. A single nucleotide polymorphism (SNP), a variation at a single site in DNA, is the most frequent type of variation in the genome. Around 335 million SNPs have been identified in the human genome, 15 m... | SNP array | Chemistry,Materials_science,Engineering,Biology | 1,000 |
1,246,673 | https://en.wikipedia.org/wiki/Council%20circle | A council circle is a distinctive feature at the center of some tribal communities in North America. The historical function of the council circles is debated. Some suggest that the talking circles are ceremonial, and others support a hypothesis that they were places for political discussion that suggest aboriginal de... | Council circle | Biology | 226 |
3,865,832 | https://en.wikipedia.org/wiki/Evolution%40Home | evolution@home was a volunteer computing project for evolutionary biology, launched in 2001. The aim of evolution@home is to improve understanding of evolutionary processes. This is achieved by simulating individual-based models. The Simulator005 module of evolution@home was designed to better predict the behaviour of ... | Evolution@Home | Engineering,Biology | 180 |
23,544,519 | https://en.wikipedia.org/wiki/Halichondrin%20B | Halichondrin B is a polyether macrolide originally isolated from the marine sponge Halichondria okadai by Hirata and Uemura in 1986. In the same report, these authors also reported the exquisite anticancer activity of halichondrin B against murine cancer cells both in culture and in in vivo studies. Halichondrin B was... | Halichondrin B | Chemistry | 450 |
3,263,222 | https://en.wikipedia.org/wiki/Multi-Object%20Spectrometer | A multi-object spectrometer is a type of optical spectrometer capable of simultaneously acquiring the spectra of multiple separate objects in its field of view. It is used in astronomical spectroscopy and is related to long-slit spectroscopy. This technique became available in the 1980s.
Description
The term multi-ob... | Multi-Object Spectrometer | Physics,Chemistry,Astronomy | 580 |
2,152,181 | https://en.wikipedia.org/wiki/List%20of%20chemical%20elements | 118 chemical elements have been identified and named officially by IUPAC. A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z).
The definitive visualisation of all 118 elements is the periodic table of... | List of chemical elements | Chemistry | 266 |
4,374,802 | https://en.wikipedia.org/wiki/Zygosaccharomyces%20bailii | Zygosaccharomyces bailii is a species in the genus Zygosaccharomyces. It was initially described as Saccharomyces bailii by Lindner in 1895, but in 1983 it was reclassified as Zygosaccharomyces bailii in the work by Barnett et al.
Spoilage resulting from growth of the yeast Zygosaccharomyces is widespread, which has c... | Zygosaccharomyces bailii | Biology | 4,560 |
36,913,274 | https://en.wikipedia.org/wiki/HD%20102350 | HD 102350 is a single star in the constellation Centaurus. It has a yellow hue and is visible to the naked eye with an apparent visual magnitude of 4.11. The distance to this star is approximately 390 light years based on parallax, but it is drifting closer with a radial velocity of −3 km/s. It has an absolute magnitud... | HD 102350 | Astronomy | 252 |
63,612,550 | https://en.wikipedia.org/wiki/Systems%20Improved%20Numerical%20Differential%20Analyzer | The Systems Improved Numerical Differential Analyzer (acronym SINDA) is a commercially available software system developed by C&R Technologies that solves resistor-capacitor (R-C) network representations of physical problems governed by diffusion equations. The software was originally designed as a general thermal anal... | Systems Improved Numerical Differential Analyzer | Physics | 89 |
42,881,025 | https://en.wikipedia.org/wiki/METAGENassist | METAGENassist is a freely available web server for comparative metagenomic analysis. Comparative metagenomic studies involve the large-scale comparison of genomic or taxonomic census data from bacterial samples across different environments. Historically this has required a sound knowledge of statistics, computer progr... | METAGENassist | Biology | 571 |
15,025,332 | https://en.wikipedia.org/wiki/Onychodontiformes | Onychodontiformes (also known as Onychodontida and Struniiformes) is an order of prehistoric sarcopterygian fish that lived during the Devonian period. The onychodontiforms are generally regarded as early-diverging members of the coelacanth lineage.
Phylogeny
The following cladogram is adapted from Mondéjar-Fernández ... | Onychodontiformes | Biology | 170 |
58,774,125 | https://en.wikipedia.org/wiki/Streptomyces%20sp.%20myrophorea | Streptomyces sp. myrophorea, isolate McG1 is a species of Streptomyces, that originates from a (ethnopharmacology) folk cure in the townland of Toneel North in Boho, County Fermanagh. This area was previously occupied by the Druids (~1500 years ago) and before this neolithic people (~ 3,700 years ago) who engraved the... | Streptomyces sp. myrophorea | Biology,Environmental_science | 939 |
68,132,396 | https://en.wikipedia.org/wiki/Blumeviridae | Blumeviridae is a family of RNA viruses, which infect prokaryotes.
Taxonomy
Blumeviridae contains 31 genera:
Alehndavirus
Bonghivirus
Cehntrovirus
Dahmuivirus
Dehgumevirus
Dehkhevirus
Espurtavirus
Gifriavirus
Hehrovirus
Ivolevirus
Kahnayevirus
Kahraivirus
Kemiovirus
Kerishovirus
Konmavirus
... | Blumeviridae | Biology | 161 |
56,256,205 | https://en.wikipedia.org/wiki/Single-electron%20transistor | A single-electron transistor (SET) is a sensitive electronic device based on the Coulomb blockade effect. In this device the electrons flow through a tunnel junction between source/drain to a quantum dot (conductive island). Moreover, the electrical potential of the island can be tuned by a third electrode, known as th... | Single-electron transistor | Materials_science | 2,371 |
4,261,263 | https://en.wikipedia.org/wiki/XPDL | The XML Process Definition Language (XPDL) is a format standardized by the Workflow Management Coalition (WfMC) to interchange business process definitions between different workflow products, i.e. between different modeling tools and management suites.
XPDL defines an XML schema for specifying the declarative part of ... | XPDL | Technology,Engineering | 1,474 |
8,463,705 | https://en.wikipedia.org/wiki/Wiswesser%20line%20notation | Wiswesser line notation (WLN), invented by William J. Wiswesser in 1949, was the first line notation capable of precisely describing complex molecules. It was the basis of ICI Ltd's CROSSBOW database system developed in the late 1960s. WLN allowed for indexing the Chemical Structure Index (CSI) at the Institute for Sci... | Wiswesser line notation | Chemistry | 379 |
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