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The Rouse model is one of the simplest coarse-grained descriptions of the dynamics of polymer chains. [ 1 ] It treats a single polymer as an Ideal chain of N point-like beads connected by harmonic springs and neglects both excluded volume and long-range hydrodynamic interactions. Each bead experiences random thermal f... | https://en.wikipedia.org/wiki/Rouse_model |
The Rouse number ( P or Z ) is a non-dimensional number in fluid dynamics which is used to define a concentration profile of suspended sediment and which also determines how sediment will be transported in a flowing fluid. It is a ratio between the sediment fall velocity w s {\displaystyle w_{s}} and the upwards veloci... | https://en.wikipedia.org/wiki/Rouse_number |
Route Mobile (formerly Routesms Solutions Ltd) is an Indian cloud communications platform as a service (CPaaS) company. Started in 2004 and headquartered in Mumbai , the company has presence in more than 15 locations across Asia-Pacific , Middle East , Africa , Europe and North America . [ 2 ]
Route Mobile was started... | https://en.wikipedia.org/wiki/Route_Mobile |
Route panorama is a continuous 2D image that includes all the scenes visible from a route, as it first appeared in Zheng and Tsuji's work of panoramic views in 1990. [ 1 ]
Different from a local panorama at a static viewpoint, a digital route panorama is constructed from partial views at consecutive viewpoints along a... | https://en.wikipedia.org/wiki/Route_panorama |
Route Reconnaissance is the investigation of the operational environment in reconnaissance operations of routes for military use, including methods of reconnoitering and classifying them for other troops. In a k during ll the primary purpose of conducting route reconnaissance is to find and report all enemy forces that... | https://en.wikipedia.org/wiki/Route_reconnaissance |
A router [ a ] is a computer and networking device that forwards data packets between computer networks , including internetworks such as the global Internet . [ 2 ] [ 3 ] [ 4 ]
Routers perform the "traffic directing" functions on the Internet. A router is connected to two or more data lines from different IP network... | https://en.wikipedia.org/wiki/Router_(computing) |
In classical mechanics, Routh's procedure or Routhian mechanics is a hybrid formulation of Lagrangian mechanics and Hamiltonian mechanics developed by Edward John Routh . Correspondingly, the Routhian is the function which replaces both the Lagrangian and Hamiltonian functions. Although Routhian mechanics is equivalent... | https://en.wikipedia.org/wiki/Routhian_mechanics |
In the control system theory , the Routh–Hurwitz stability criterion is a mathematical test that is a necessary and sufficient condition for the stability of a linear time-invariant (LTI) dynamical system or control system . A stable system is one whose output signal is bounded; the position, velocity or energy do not ... | https://en.wikipedia.org/wiki/Routh–Hurwitz_stability_criterion |
In hydrology , routing is a technique used to predict the changes in shape of a hydrograph as water moves through a river channel or a reservoir . In flood forecasting , hydrologists may want to know how a short burst of intense rain in an area upstream of a city will change as it reaches the city. Routing can be used ... | https://en.wikipedia.org/wiki/Routing_(hydrology) |
A routing diagram or route diagram in the field of management engineering is a type of diagram , that shows a route through an accessible physical space. [ 1 ] Routing diagrams are used in plant layout study , and manufacturing plant design.
A routing diagrams shows a route through a physical space. They are often con... | https://en.wikipedia.org/wiki/Routing_diagram |
Network routing in a cellular network deals with the challenges of traditional telephony such as switching and call setup. [ 1 ]
Most cellular network routing issues in different cells can be attributed to the multiple access methods used for transmission. The location of each mobile phone must be known to reuse a giv... | https://en.wikipedia.org/wiki/Routing_in_cellular_networks |
Rovalpituzumab tesirine ( Rova-T ) is an experimental antibody-drug conjugate targeting the protein DLL3 on tumor cells. [ 1 ] [ 2 ] It was originally developed by Stemcentrx and was purchased by AbbVie . [ 3 ] It was tested for use in small-cell lung cancer , but development was terminated after unsuccessful phase III... | https://en.wikipedia.org/wiki/Rovalpituzumab_tesirine |
The Rover T.P.90 is a British made gas turboprop aircraft engine manufactured by the Rover Company . [ 1 ]
The Rover Company first started the development of gas turbine engines for automobiles in 1949. Years later, the company made gas turbines for APU applications.
The T.P.90 Turboprop was used in the 1940s British... | https://en.wikipedia.org/wiki/Rover_T.P._90 |
Rovibronic coupling , also known as rotation/vibration-electron coupling , denotes the simultaneous interactions between ro tational, vib rational, and elect ronic degrees of freedom in a molecule. [ 1 ] When a rovibronic transition occurs, the rotational, vibrational, and electronic states change simultaneously, unlik... | https://en.wikipedia.org/wiki/Rovibronic_coupling |
In linear algebra , the column space (also called the range or image ) of a matrix A is the span (set of all possible linear combinations ) of its column vectors . The column space of a matrix is the image or range of the corresponding matrix transformation .
Let F {\displaystyle F} be a field . The column space of an... | https://en.wikipedia.org/wiki/Row_and_column_spaces |
In linear algebra , a column vector with m {\displaystyle m} elements is an m × 1 {\displaystyle m\times 1} matrix [ 1 ] consisting of a single column of m {\displaystyle m} entries, for example, x = [ x 1 x 2 ⋮ x m ] . {\displaystyle {\boldsymbol {x}}={\begin{bmatrix}x_{1}\\x_{2}\\\vdots \\x_{m}\end{bmatrix}}.... | https://en.wikipedia.org/wiki/Row_and_column_vectors |
In linear algebra , two matrices are row equivalent if one can be changed to the other by a sequence of elementary row operations . Alternatively, two m × n matrices are row equivalent if and only if they have the same row space . The concept is most commonly applied to matrices that represent systems of linear equatio... | https://en.wikipedia.org/wiki/Row_equivalence |
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ENSMUSG00000022390
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NM_017590
NM_001081016
NP_060060
NP_001074485
RoXaN (Rotavirus 'X'-associated non-structural protein) also known as ZC3H7B (zinc finger CCCH-type containing 7B), is a protein that in humans is encoded by the ZC3H7B gene . [ 5 ] RoXaN is a protein th... | https://en.wikipedia.org/wiki/Roxan |
Roy's identity (named after French economist René Roy ) is a major result in microeconomics having applications in consumer choice and the theory of the firm . The lemma relates the ordinary (Marshallian) demand function to the derivatives of the indirect utility function . Specifically, denoting the indirect utility ... | https://en.wikipedia.org/wiki/Roy's_identity |
Roy McWeeny (19 May 1924 – 29 April 2021) was a British academic physicist and chemist.
McWeeny was born in Bradford , Yorkshire in May 1924. His first degree was in physics from the University of Leeds . He then obtained a D.Phil. in mathematical physics and quantum theory under the supervision of Charles Coulson at ... | https://en.wikipedia.org/wiki/Roy_McWeeny |
The Royal Academy of Engineering ( RAEng ) is the United Kingdom 's national academy of engineering .
The Academy was founded in June 1976 as the Fellowship of Engineering with support from Prince Philip, Duke of Edinburgh , who became the first senior fellow and remained so until his death. The Fellowship was incorpo... | https://en.wikipedia.org/wiki/Royal_Academy_of_Engineering |
The Royal Aeronautical Society , also known as the RAeS , is a British multi-disciplinary professional institution dedicated to the global aerospace community. Founded in 1866, it is the oldest aeronautical society in the world. [ 1 ] Members, Fellows, and Companions of the society can use the post-nominal letters MRAe... | https://en.wikipedia.org/wiki/Royal_Aeronautical_Society |
The Royal Astronomical Society ( RAS ) is a learned society and charity that encourages and promotes the study of astronomy , solar-system science , geophysics and closely related branches of science. [ 3 ] Its headquarters are in Burlington House , on Piccadilly in London . [ 4 ] The society has over 4,000 members, kn... | https://en.wikipedia.org/wiki/Royal_Astronomical_Society |
The Royal Astronomical Society of Canada ( RASC ) is a national, non-profit, charitable organization devoted to the advancement of astronomy and related sciences. At present, there are 30 local branches of the Society, called Centres, in towns and cities across the country from St. John's, Newfoundland , to Victoria, B... | https://en.wikipedia.org/wiki/Royal_Astronomical_Society_of_Canada |
The Royal Australian Chemical Institute ( RACI ) is both the qualifying body in Australia for professional chemists and a learned society promoting the science and practice of chemistry in all its branches. [ 1 ] The RACI hosts conferences, seminars and workshops. It is the professional body for chemistry in Australia,... | https://en.wikipedia.org/wiki/Royal_Australian_Chemical_Institute |
The Royal Australian Naval Bridging Train was a unique unit of the Royal Australian Navy . It was active only during the First World War , where it served in the Gallipoli and the Sinai and Palestine Campaigns . The Train was formed in February 1915 and stood down in May 1917. Throughout its existence, it was composed ... | https://en.wikipedia.org/wiki/Royal_Australian_Naval_Bridging_Train |
The Royal Corps of Naval Constructors ( RCNC ) is an institution of the British Royal Navy and Admiralty for training in naval architecture , marine, electrical and weapon engineering. It was established by Order in Council in August 1883, on the recommendation of the naval architect Sir William White . Its precursor ... | https://en.wikipedia.org/wiki/Royal_Corps_of_Naval_Constructors |
The Columbia Detachment of the Royal Engineers was a contingent of the Royal Engineers of the British Army that was responsible for the foundation of British Columbia as the Colony of British Columbia (1858–66) . It was commanded by Colonel Richard Clement Moody FICE FRGS RIBA, Kt. (Fr.) .
When news of the Fraser Cany... | https://en.wikipedia.org/wiki/Royal_Engineers,_Columbia_Detachment |
The Royal Institute of Chemistry was a British scientific organisation. Founded in 1877 as the Institute of Chemistry of Great Britain and Ireland ( ICGBI ), its role was to focus on qualifications and the professional status of chemists, and its aim was to ensure that consulting and analytical chemists were properly t... | https://en.wikipedia.org/wiki/Royal_Institute_of_Chemistry |
The Royal Institution of Naval Architects (also known as RINA) is a professional institution and global governing body for naval architecture and maritime engineering. Members work in industry, academia, and maritime organisations worldwide, participating in the design, construction, repair, and operation of ships, boa... | https://en.wikipedia.org/wiki/Royal_Institution_of_Naval_Architects |
The Royal Netherlands Chemical Society (In Dutch : Koninklijke Nederlandse Chemische Vereniging , abbreviated: KNCV ) is a learned society and professional association founded in 1903 to represent the interests of chemists and chemical engineers in the Netherlands . Currently the organisation has approximately 7,400 me... | https://en.wikipedia.org/wiki/Royal_Netherlands_Chemical_Society |
The Royal Norwegian Society of Sciences and Letters ( Danish : Det Kongelige Norske Videnskabers Selskab , DKNVS) is a Norwegian learned society based in Trondheim . It was founded in 1760 and is Norway's oldest scientific and scholarly institution. The society's Protector is King Harald V of Norway . Its membership co... | https://en.wikipedia.org/wiki/Royal_Norwegian_Society_of_Sciences_and_Letters |
The Royal Swedish Academy of Engineering Sciences ( Swedish : Kungliga Ingenjörsvetenskapsakademien , IVA ), founded on 24 October 1919 by King Gustaf V , is one of the royal academies in Sweden . The academy is an independent organisation, which promotes contact and exchange between business, research, and government,... | https://en.wikipedia.org/wiki/Royal_Swedish_Academy_of_Engineering_Sciences |
Royana (2006–2010) was Iran's and the Middle East's first successfully cloned sheep. [ 1 ] Royana was a brown male domestic sheep and was cloned in the Royan Research Institute in Isfahan , Iran (The word Royan means embryo in Persian). He was the second cloned sheep in Royan Research Institute, but whereas the first ... | https://en.wikipedia.org/wiki/Royana |
The rp-process (rapid proton capture process) consists of consecutive proton captures onto seed nuclei to produce heavier elements. [ 1 ] It is a nucleosynthesis process and, along with the s -process and the r -process , may be responsible for the generation of many of the heavy elements present in the universe. Howe... | https://en.wikipedia.org/wiki/Rp-process |
The rpoB gene encodes the β subunit of bacterial RNA polymerase and the homologous plastid -encoded RNA polymerase (PEP). It codes for 1342 amino acids in E. coli , making it the second-largest polypeptide in the bacterial cell. [ 1 ] It is targeted by the rifamycin family of antibacterials, such as rifampin . [ 2 ] Mu... | https://en.wikipedia.org/wiki/RpoB |
Ribulose-1,5-bisphosphate carboxylase/oxygenase , commonly known by the abbreviations RuBisCo , rubisco , [ 1 ] RuBPCase , [ 2 ] or RuBPco , [ 3 ] is an enzyme ( EC 4.1.1.39 ) involved in the light-independent (or "dark") part of photosynthesis , including the carbon fixation by which atmospheric carbon dioxide is conv... | https://en.wikipedia.org/wiki/RuBisCO |
Ruthenium(II) chloride is an inorganic compound , a metal salt of ruthenium and hydrochloric acid with the formula RuCl 2 . [ 1 ] [ 2 ]
Ruthenium(II) chloride forms brown crystals.
Ruthenium(II) chloride is poorly soluble in cold water, but is soluble in ethanol .
Ruthenium(II) chloride can form complexes with aroma... | https://en.wikipedia.org/wiki/RuCl2 |
Ruthenium(III) chloride is the chemical compound with the formula RuCl 3 . "Ruthenium(III) chloride" more commonly refers to the hydrate RuCl 3 · x H 2 O. Both the anhydrous and hydrated species are dark brown or black solids. The hydrate, with a varying proportion of water of crystallization , often approximating to a... | https://en.wikipedia.org/wiki/RuCl3 |
Ruthenium(IV) oxide is the inorganic compound with the formula Ru O 2 . This black solid is the most common oxide of ruthenium . It is widely used as an electrocatalyst for producing chlorine, chlorine oxides, and O 2 . [ 1 ] Like many dioxides, RuO 2 adopts the rutile structure. [ 2 ] [ 3 ]
It is usually prepared b... | https://en.wikipedia.org/wiki/RuO2 |
Ruthenium tetroxide is the inorganic compound with the formula RuO 4 . It is a yellow volatile solid that melts near room temperature. [ 3 ] It has the odor of ozone. [ 4 ] Samples are typically black due to impurities. The analogous OsO 4 is more widely used and better known. It is also the anhydride of hyperruthenic ... | https://en.wikipedia.org/wiki/RuO4 |
Ruaniaceae is an Actinomycete family with two monotypic genera. [ 1 ]
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) [ 2 ] and National Center for Biotechnology Information (NCBI) [ 3 ] and the phylogeny is based on 16S rRNA-based LTP release 106 by The A... | https://en.wikipedia.org/wiki/Ruaniaceae |
Rubber Chemistry and Technology is a quarterly peer-reviewed scientific journal covering fundamental research and technical developments relating to chemistry, materials science, and engineering of rubber , elastomers , and related materials. It was established in 1928, with Carroll C. Davis as its first editor-in-chie... | https://en.wikipedia.org/wiki/Rubber_Chemistry_and_Technology |
Rubber elasticity is the ability of solid rubber to be stretched up to a factor of 10 from its original length, and return to close to its original length upon release. This process can be repeated many times with no apparent degradation to the rubber. [ 1 ]
Rubber, like all materials, consists of molecules . Rubber's... | https://en.wikipedia.org/wiki/Rubber_elasticity |
Rubber seed oil is oil extracted from the seeds of rubber trees . In the latex manufacturing process, rubber seeds are not historically collected and commercialized. Recent analysis shows that rubber seed oil contained the following fatty acids: [ 1 ] [ citation needed ]
In India and other rubber manufacturing areas r... | https://en.wikipedia.org/wiki/Rubber_seed_oil |
Rubber toughening is a process in which rubber nanoparticles are interspersed within a polymer matrix to increase the mechanical robustness, or toughness , of the material. By "toughening" a polymer it is meant that the ability of the polymeric substance to absorb energy and plastically deform without fracture is incre... | https://en.wikipedia.org/wiki/Rubber_toughening |
Rubberized asphalt concrete ( RAC ), also known as asphalt rubber or just rubberized asphalt , is noise reducing pavement material that consists of regular asphalt concrete mixed with crumb rubber made from recycled tires . Asphalt rubber is the largest single market for ground rubber in the United States, consuming an... | https://en.wikipedia.org/wiki/Rubberized_asphalt |
Rubble is broken stone , of irregular size, shape [ 1 ] and texture; undressed especially as a filling-in. Rubble naturally found in the soil is known also as ' brash' (compare cornbrash ). [ 2 ] Where present, it becomes more noticeable when the land is ploughed or worked.
" Rubble-work " is a name applied to several... | https://en.wikipedia.org/wiki/Rubble |
In astronomy , a rubble pile is a celestial body that consists of numerous pieces of debris that have coalesced under the influence of gravity . Rubble piles have low density because there are large cavities between the various chunks that make them up.
The asteroids Bennu and Ryugu have a measured bulk density which ... | https://en.wikipedia.org/wiki/Rubble_pile |
The rubble trench foundation , an ancient construction approach popularized by architect Frank Lloyd Wright , is a type of foundation that uses loose stone or rubble to minimize the use of concrete and improve drainage. [ 1 ] It is considered more environmentally friendly than other types of foundation because cement m... | https://en.wikipedia.org/wiki/Rubble_trench_foundation |
Rubblization is a construction and engineering technique that involves saving time and transportation costs by reducing existing concrete into rubble at its current location rather than hauling it to another location. Rubblization has two primary applications: creating a base for new roadways and decommissioning nuclea... | https://en.wikipedia.org/wiki/Rubblization |
A Rube Goldberg machine , named after American cartoonist Rube Goldberg , is a chain reaction –type machine or contraption intentionally designed to perform a simple task in a comically overcomplicated way. Usually, these machines consist of a series of simple unrelated devices; the action of each triggers the initiati... | https://en.wikipedia.org/wiki/Rube_Goldberg_machine |
Rubedo is a Latin word meaning "redness" that was adopted by alchemists to define the fourth and final major stage in their magnum opus . [ 1 ] Both gold and the philosopher's stone were associated with the color red, as rubedo signaled alchemical success, and the end of the great work. [ 2 ] Rubedo is also known by th... | https://en.wikipedia.org/wiki/Rubedo |
Rubella , also known as German measles or three-day measles , [ 6 ] is an infection caused by the rubella virus . [ 3 ] This disease is often mild, with half of people not realizing that they are infected. [ 1 ] [ 7 ] A rash may start around two weeks after exposure and last for three days. [ 1 ] It usually starts on t... | https://en.wikipedia.org/wiki/Rubella |
In psychological theories of motivation , the Rubicon model , more completely the Rubicon model of action phases , makes a distinction between motivational and volitional processes. The Rubicon model "defines clear boundaries between motivational and action phases." The first boundary "separates the motivational proces... | https://en.wikipedia.org/wiki/Rubicon_model |
Rubidium acetate is a rubidium salt that is the result of reacting rubidium metal, rubidium carbonate , or rubidium hydroxide with acetic acid . It is soluble in water like other acetates . [ 2 ]
Rubidium acetate is used as a catalyst for the polymerization of silanol terminated siloxane oligomers . [ 5 ]
This inorga... | https://en.wikipedia.org/wiki/Rubidium_acetate |
Rubidium azide is an inorganic compound with the formula Rb N 3 . It is the rubidium salt of the hydrazoic acid HN 3 . Like most azides , it is explosive. [ 4 ]
Rubidium azide can be created by the reaction between rubidium sulfate and barium azide which results in formation of easily separated insoluble barium sulfat... | https://en.wikipedia.org/wiki/Rubidium_azide |
Rubika ( Persian : پیامرسان روبیکا ) is an Iranian social media platform, instant messaging (IM), VoIP and video-on-demand service developed by Tusca holding, MCI , and MTN Irancell . It is one of the most widely used social media platforms in Iran , with more than 50 million users, and the largest social media app ba... | https://en.wikipedia.org/wiki/Rubika |
A Rubinstein bargaining model refers to a class of bargaining games that feature alternating offers through an infinite time horizon. The original proof is due to Ariel Rubinstein in a 1982 paper. [ 1 ] For a long time, the solution to this type of game was a mystery; thus, Rubinstein's solution is one of the most inf... | https://en.wikipedia.org/wiki/Rubinstein_bargaining_model |
The Rubottom oxidation is a useful, high-yielding chemical reaction between silyl enol ethers and peroxyacids to give the corresponding α-hydroxy carbonyl product. [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] The mechanism of the reaction was proposed in its original disclosure by A.G. Brook [ 6 ] [ 7 ] with further evidence later su... | https://en.wikipedia.org/wiki/Rubottom_oxidation |
Rubrocurcumin is a red-colored dye that is formed by the reaction of curcumin and boric acid . [ 1 ]
The reaction of curcumin with borates in presence of oxalic acid produces rubrocurcumin. [ 2 ]
Rubrocurcumin produces a red-colored solution.
Rubrocurcumin is a neutral molecule, while rosocyanine is ionic. In rubroc... | https://en.wikipedia.org/wiki/Rubrocurcumin |
RubyForge was a collaborative software development management system dedicated to projects related to the Ruby programming language . It was started in 2003 by Ruby Central in an effort to help the Ruby community by providing a home for open source Ruby projects.
In February 2014 it hosted 9,603 projects and had 103,8... | https://en.wikipedia.org/wiki/RubyForge |
The ruby fluorescence pressure scale is an optical method to measure pressure within a sample chamber of a diamond anvil cell apparatus. [ 1 ] Since it is an optical method, which fully make use of the transparency of diamond anvils and only requires an access to a small scale laser generator, it has become the most pr... | https://en.wikipedia.org/wiki/Ruby_pressure_scale |
A rudder angle indicator is a device used to indicate the present position of the rudder blade, usually fitted near the Ship's wheel on the bridge and in the engine control room. [ 1 ]
This article related to water transport is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Rudder_angle_indicator |
Rudder ratio refers to a value that is monitored by the computerized flight control systems in modern aircraft . The ratio relates the aircraft airspeed to the rudder deflection setting that is in effect at the time. As an aircraft accelerates, the deflection of the rudder needs to be reduced proportionately within th... | https://en.wikipedia.org/wiki/Rudder_ratio |
A ruderal species is a plant species that is first to colonize disturbed lands. The disturbance may be natural – for example, wildfires or avalanches – or the consequences of human activities, such as construction ( of roads , of buildings , mining , etc.) or agriculture (abandoned fields, irrigation , etc.).
The ter... | https://en.wikipedia.org/wiki/Ruderal_species |
Rudin's conjecture is a mathematical conjecture in additive combinatorics and elementary number theory about an upper bound for the number of squares in finite arithmetic progressions . The conjecture, which has applications in the theory of trigonometric series , was first stated by Walter Rudin in his 1960 paper Trig... | https://en.wikipedia.org/wiki/Rudin's_conjecture |
Rudolf Carnap ( / ˈ k ɑːr n æ p / ; [ 20 ] German: [ˈkaʁnaːp] ; 18 May 1891 – 14 September 1970) was a German-language philosopher who was active in Europe before 1935 and in the United States thereafter. He was a major member of the Vienna Circle and an advocate of logical positivism .
Carnap's father rose from being... | https://en.wikipedia.org/wiki/Rudolf_Carnap |
Rudolf Christian Böttger (28 April 1806 – 29 April 1881) was a German inorganic chemist. He conducted most of his research at the University of Frankfurt am Main . He is credited with discovery of nitrocellulose in 1846, independently to Schönbein , and with the synthesis of the first organocopper compound copper(I) ac... | https://en.wikipedia.org/wiki/Rudolf_Christian_Böttger |
Rudolf Hoppe (29 October 1922 – 24 November 2014), a German chemist, discovered the first covalent noble gas compounds .
Hoppe studied chemistry at the Christian-Albrechts- University of Kiel and was awarded his doctorate at the Westfälische Wilhelms- University of Münster in 1954 under the supervision of Wilhelm Klem... | https://en.wikipedia.org/wiki/Rudolf_Hoppe |
Rudolf Karl Lüneburg (30 March 1903, Volkersheim ( Bockenem ) - 19 August 1949, Great Falls, Montana ), after his emigration at first Lueneburg , later Luneburg , sometimes misspelled Luneb e rg or Lune n b e rg ) was a professor of mathematics and optics at the Dartmouth College Eye Institute. He was born in Germany ,... | https://en.wikipedia.org/wiki/Rudolf_Luneburg |
Rudolph Arthur Marcus (born July 21, 1923) is a Canadian-born American chemist who received the 1992 Nobel Prize in Chemistry [ 3 ] "for his contributions to the theory of electron transfer reactions in chemical systems". [ 4 ] Marcus theory , named after him, provides a thermodynamic and kinetic framework for describi... | https://en.wikipedia.org/wiki/Rudolph_A._Marcus |
Sir Rudolph Albert Peters MC MID FRS [ 1 ] H FRSE FRCP LLD (13 April 1889 – 29 January 1982) was a British biochemist. He led the research team at Oxford who developed British Anti-Lewisite (BAL), an antidote for the chemical warfare agent lewisite . His efforts investigating the mechanism of arsenic war gases were dee... | https://en.wikipedia.org/wiki/Rudolph_Peters |
Ruff degradation is a reaction used to shorten the open chain forms of monosaccharides. [ 1 ] It is functionally the reverse reaction of Kiliani-Fischer synthesis .
In 1898, Otto Ruff published his work on the transformation of D- Glucose to D- Arabinose later called the Ruff degradation. In this reaction, D-Glucose i... | https://en.wikipedia.org/wiki/Ruff_degradation |
In mathematics , Ruffini's rule is a method for computation of the Euclidean division of a polynomial by a binomial of the form x – r . It was described by Paolo Ruffini in 1809. [ 1 ] The rule is a special case of synthetic division in which the divisor is a linear factor.
The rule establishes a method for dividing t... | https://en.wikipedia.org/wiki/Ruffini's_rule |
In anatomy , rugae ( sg. : ruga ) are a series of ridges produced by folding of the wall of an organ . [ 1 ]
In general, rugae are a biological feature found in many organisms, serving purposes such as increasing surface area, flexibility, or structural support.
Most commonly rugae refers to the gastric rugae of the ... | https://en.wikipedia.org/wiki/Rugae |
The Rugg/Feldman benchmarks are a series of seven short BASIC programming language programs that are used to test the performance of BASIC implementations on various microcomputers . They were published by Tom Rugg and Phil Feldman in the June 1977 issue of the US computer magazine, Kilobaud .
The article reported tha... | https://en.wikipedia.org/wiki/Rugg/Feldman_benchmarks |
Rugosity , f r , is a measure of small-scale variations of amplitude in the height of a surface,
where A r is the real (true, actual) surface area and A g is the macroscopic geometric surface area . [ 1 ]
Rugosity calculations are commonly used in materials science to characterize surfaces, amongst others, in marine ... | https://en.wikipedia.org/wiki/Rugosity |
Rui Luís Reis (born 19 April 1967) is a Portuguese scientist known for his research in tissue engineering , regenerative medicine , biomaterials, biomimetics , stem cells , and biodegradable polymers .
Reis is a professor of at the University of Minho in Braga and Guimarães. He is the Founding Director of the 3B's Res... | https://en.wikipedia.org/wiki/Rui_L._Reis |
Ruin value ( German : Ruinenwert ) is the concept that a building be designed in such a way that if it eventually collapsed, it would leave behind aesthetically pleasing ruins that would last far longer without any maintenance at all. The idea was pioneered by German architect Albert Speer while planning for the 1936 S... | https://en.wikipedia.org/wiki/Ruin_value |
Rule-based modeling is a modeling approach that uses a set of rules that indirectly specifies a mathematical model. The rule-set can either be translated into a model such as Markov chains or differential equations, or be treated using tools that directly work on the rule-set in place of a translated model, as the latt... | https://en.wikipedia.org/wiki/Rule-based_modeling |
A rule complex is a set consisting of rules and/or other rule complexes. This is a generalization of a set of rules, and provides a tool to investigate and describe how rules can function as values, norms , judgmental or prescriptive rules, and meta-rules. Also possible is to examine objects consisting of rules such ... | https://en.wikipedia.org/wiki/Rule_complex |
In finance , the rule of 72 , the rule of 70 [ 1 ] and the rule of 69.3 are methods for estimating an investment 's doubling time. The rule number (e.g., 72) is divided by the interest percentage per period (usually years) to obtain the approximate number of periods required for doubling. Although scientific calculato... | https://en.wikipedia.org/wiki/Rule_of_72 |
In matrix theory , the rule of Sarrus is a mnemonic device for computing the determinant of a 3 × 3 {\displaystyle 3\times 3} matrix named after the French mathematician Pierre Frédéric Sarrus . [ 1 ]
Consider a 3 × 3 {\displaystyle 3\times 3} matrix
then its determinant can be computed by the following scheme.
Writ... | https://en.wikipedia.org/wiki/Rule_of_Sarrus |
The rule of marteloio is a medieval technique of navigational computation that uses compass direction, distance and a simple trigonometric table known as the toleta de marteloio . The rule told mariners how to plot the traverse between two different navigation courses by means of resolving triangles with the help of th... | https://en.wikipedia.org/wiki/Rule_of_marteloio |
In materials science , a general rule of mixtures is a weighted mean used to predict various properties of a composite material . [ 1 ] [ 2 ] [ 3 ] It provides a theoretical upper- and lower-bound on properties such as the elastic modulus , [ 1 ] ultimate tensile strength , thermal conductivity , and electrical conduct... | https://en.wikipedia.org/wiki/Rule_of_mixtures |
The rule of mutual exclusion in molecular spectroscopy relates the observation of molecular vibrations to molecular symmetry . It states that no normal modes can be both Infrared and Raman active in a molecule that possesses a center of symmetry . This is a powerful application of group theory to vibrational spectrosco... | https://en.wikipedia.org/wiki/Rule_of_mutual_exclusion |
In combinatorics , the rule of product or multiplication principle is a basic counting principle (a.k.a. the fundamental principle of counting ). Stated simply, it is the intuitive idea that if there are a ways of doing something and b ways of doing another thing, then there are a · b ways of performing both actions. ... | https://en.wikipedia.org/wiki/Rule_of_product |
In probability theory , the rule of succession is a formula introduced in the 18th century by Pierre-Simon Laplace in the course of treating the sunrise problem . [ 1 ] The formula is still used, particularly to estimate underlying probabilities when there are few observations or events that have not been observed to o... | https://en.wikipedia.org/wiki/Rule_of_succession |
The rule of thirds is a rule of thumb for composing visual art such as designs , films , paintings , and photographs . [ 3 ] The guideline proposes that an image should be imagined as divided into nine equal parts by two equally spaced horizontal lines and two equally spaced vertical lines, and that important compositi... | https://en.wikipedia.org/wiki/Rule_of_thirds |
In scuba diving , the rule of thirds is a rule of thumb used by divers to plan dives so they have enough breathing gas remaining in their diving cylinder at the end of the dive to be able to complete the dive safely. [ 1 ] [ 2 ] This rule generally only applies to diving in overhead environments, such as caves, wrecks,... | https://en.wikipedia.org/wiki/Rule_of_thirds_(diving) |
In English , the phrase rule of thumb refers to an approximate method for doing something, based on practical experience rather than theory. [ 1 ] [ 2 ] [ 3 ] This usage of the phrase can be traced back to the 17th century and has been associated with various trades where quantities were measured by comparison to the w... | https://en.wikipedia.org/wiki/Rule_of_thumb |
The rule of twelfths is an approximation to a sine curve . It can be used as a rule of thumb for estimating a changing quantity where both the quantity and the steps are easily divisible by 12. Typical uses are predicting the height of the tide or the change in day length over the seasons.
The rule states that over ... | https://en.wikipedia.org/wiki/Rule_of_twelfths |
A ruler , sometimes called a rule , scale or a line gauge or metre/meter stick, is an instrument used to make length measurements , whereby a length is read from a series of markings called "rules" along an edge of the device. [ 1 ] Usually, the instrument is rigid and the edge itself is a straightedge ("ruled straight... | https://en.wikipedia.org/wiki/Ruler |
In number theory , the ruler function of an integer n {\displaystyle n} can be either of two closely related functions. One of these functions counts the number of times n {\displaystyle n} can be evenly divided by two, which for the numbers 1, 2, 3, ... is
Alternatively, the ruler function can be defined as the same ... | https://en.wikipedia.org/wiki/Ruler_function |
In mathematical logic , the rules of passage govern how quantifiers distribute over the basic logical connectives of first-order logic . The rules of passage govern the "passage" (translation) from any formula of first-order logic to the equivalent formula in prenex normal form , and vice versa.
See Quine (1982: 119,... | https://en.wikipedia.org/wiki/Rules_of_passage |
A dividing engine is a device employed to mark graduations on measuring instruments.
There has always been a need for accurate measuring instruments. Whether it is a linear device such as a ruler or vernier or a circular device such as a protractor , astrolabe , sextant , theodolite , or setting circles for astronomic... | https://en.wikipedia.org/wiki/Ruling_engine |
The Rulkov map is a two-dimensional iterated map used to model a biological neuron . It was proposed by Nikolai F. Rulkov in 2001. [ 1 ] The use of this map to study neural networks has computational advantages because the map is easier to iterate than a continuous dynamical system . This saves memory and simplifies th... | https://en.wikipedia.org/wiki/Rulkov_map |
Ruma Falk ( Hebrew : רומה פלק , née Oren-Aharonovich, [ 1 ] 1932–2020) was an Israeli psychologist and philosopher of mathematics known for her work on probability theory and human understanding of probability and statistics. [ 2 ]
Falk was born in Jerusalem, [ 1 ] [ 2 ] and educated at the Herzliya Hebrew Gymnasium [... | https://en.wikipedia.org/wiki/Ruma_Falk |
Rumble strips (also known as sleeper lines or alert strips ) are a traffic calming feature to alert inattentive drivers of potential danger, by causing a tactile vibration and audible rumbling transmitted through a vehicle's wheels into its interior. A rumble strip is applied along the direction of travel following a... | https://en.wikipedia.org/wiki/Rumble_strip |
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