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The North polar sequence is a group of 96 stars that was used to define stellar magnitudes and colors. [ 1 ] The cluster of stars lies within two degrees of the Northern Celestial pole . [ 1 ] That fact makes them visible to everyone in the northern hemisphere . [ 2 ]
Originally proposed by Edward Charles Pickering , ... | https://en.wikipedia.org/wiki/North_polar_sequence |
Northeast is a compass point.
Northeast , north-east , north east , northeastern or north-eastern or north eastern may also refer to: | https://en.wikipedia.org/wiki/Northeast_(disambiguation) |
The Northern European Enclosure Dam ( NEED ) is a proposed solution to the problem of rising ocean levels in Northern Europe . It would be a megaproject , involving the construction of two massive dams in the English Channel and the North Sea ; the former between France and England , and the latter between Scotland and... | https://en.wikipedia.org/wiki/Northern_European_Enclosure_Dam |
The Northern Provinces of South Africa is a biogeographical area used in the World Geographical Scheme for Recording Plant Distributions (WGSRPD). It is part of the WGSRPD region 27 Southern Africa. The area has the code "TVL". [ 1 ] It includes the South African provinces of Gauteng , Mpumalanga , Limpopo (Northern Pr... | https://en.wikipedia.org/wiki/Northern_Provinces |
The northern blot , or RNA blot, [ 1 ] is a technique used in molecular biology research to study gene expression by detection of RNA (or isolated mRNA ) in a sample. [ 2 ] [ 3 ]
With northern blotting it is possible to observe cellular control over structure and function by determining the particular gene expression ... | https://en.wikipedia.org/wiki/Northern_blot |
The northern celestial hemisphere , also called the Northern Sky , is the northern half of the celestial sphere ; that is, it lies north of the celestial equator . This arbitrary sphere appears to rotate westward around a polar axis due to Earth's rotation .
At any given time, the entire Northern Sky is visible from t... | https://en.wikipedia.org/wiki/Northern_celestial_hemisphere |
Northern resident orcas , also known as northern resident killer whales ( NRKW ), are one of four separate, non-interbreeding communities of the exclusively fish-eating ecotype of orca in the northeast portion of the North Pacific Ocean . They live primarily off the coast of British Columbia (BC), Canada, and also trav... | https://en.wikipedia.org/wiki/Northern_resident_orcas |
The northern riverine forest is a type of forest ecology most dominant along waterways in the northeastern and north-central United States and bordering areas of Canada . Key species include willow , elm , American sycamore , painted trillium , goldthread , common wood-sorrel , pink lady's-slipper , wild sarsaparilla ,... | https://en.wikipedia.org/wiki/Northern_riverine_forest |
The Northrop Loom was a fully automatic power loom marketed by George Draper and Sons , Hopedale, Massachusetts beginning in 1895. It was named after James Henry Northrop who invented the shuttle-charging mechanism. [ citation needed ]
James Henry Northrop , (8 May 1856 - 12 December 1940) was born in Keighley , West ... | https://en.wikipedia.org/wiki/Northrop_Loom |
Northwest is a compass point.
Northwest or north-west or north west may also refer to: | https://en.wikipedia.org/wiki/Northwest_(disambiguation) |
The Northwest Nuclear Consortium is an organization based in Washington state which uses a research grade ion collider to teach a class of high school students nuclear engineering principles based on the Department of Energy curriculum. [ 1 ] They won the 1st Place at WSU Imagine Tomorrow in 2012. They also won the 1s... | https://en.wikipedia.org/wiki/Northwest_Nuclear_Consortium |
The northwestern blot , also known as the northwestern assay , is a hybrid analytical technique of the western blot and the northern blot , and is used in molecular biology to detect interactions between RNA and proteins . A related technique, the western blot, is used to detect a protein of interest that involves tra... | https://en.wikipedia.org/wiki/Northwestern_blot |
Norton's dome is a thought experiment that exhibits a non-deterministic system within the bounds of Newtonian mechanics . It was devised by John D. Norton in 2003. [ 1 ] [ 2 ] It is a special limiting case of a more general class of examples from 1997 by Sanjay Bhat and Dennis Bernstein. [ 3 ] The Norton's dome problem... | https://en.wikipedia.org/wiki/Norton's_dome |
Norton David Zinder (November 7, 1928 – February 3, 2012) [ 1 ] was an American biologist famous for his discovery of genetic transduction . Zinder was born in New York City , received his A.B. from Columbia University in 1947, Ph.D. from the University of Wisconsin–Madison in 1952, and became a member of the National... | https://en.wikipedia.org/wiki/Norton_Zinder |
Norvaline (abbreviated as Nva ) is an amino acid with the formula CH 3 (CH 2 ) 2 CH(NH 2 )CO 2 H. The compound is a structural analog of valeric acid and also an isomer of the more common amino acid valine . [ 2 ] Like most other α-amino acids , norvaline is chiral . It is a white, water-soluble solid.
Norvaline is a ... | https://en.wikipedia.org/wiki/Norvaline |
Norverapamil is a calcium channel blocker . It is the main active metabolite of verapamil . [ 1 ] It contributes significantly to the therapeutic effects of verapamil, which include the treatment of hypertension , angina , and arrhythmias . [ 2 ] Despite being a metabolite of verapamil, norverapamil retains much of the... | https://en.wikipedia.org/wiki/Norverapamil |
The Norwegian Academy of Technological Sciences ( Norwegian : Norges Tekniske Vitenskapsakademi , NTVA ) is a learned society based in Trondheim , Norway . [ 1 ]
Founded in 1955, the academy has about 500 members. It is a member of the International Council of Academies of Engineering and Technological Sciences (CAETS... | https://en.wikipedia.org/wiki/Norwegian_Academy_of_Technological_Sciences |
The Norwegian Astronomical Society ( Norwegian : Norsk Astronomisk Selskap ) is a Norwegian organization active in astronomy research, education and outreach.
The society was founded on 25 February 1938 in Oslo and initiated by Svein Rosseland , [ 1 ] who also founded the Institute of Theoretical Astrophysics at the U... | https://en.wikipedia.org/wiki/Norwegian_Astronomical_Society |
The Norwegian Chemical Society ( Norwegian : Norsk kjemisk selskap ) is a professional society in Norway for chemists . Formed in 1893, its purpose is to "promote the interest and understanding of chemistry and chemical technology". [ 1 ]
Chair is Jørn H. Hansen, vice chair is Karina Mathisen and board members are Cam... | https://en.wikipedia.org/wiki/Norwegian_Chemical_Society |
The Norwegian Ocean Industry Authority ( Norwegian : Havindustritilsynet ) is a Norwegian governmental supervisory authority [ 1 ] under the Norwegian Ministry of Labour and Social Inclusion . [ citation needed ] The authority has regulatory responsibility for safety, emergency preparedness and the working environment ... | https://en.wikipedia.org/wiki/Norwegian_Ocean_Industry_Authority |
The Norwegian Oil and Petrochemical Union ( Norwegian : Norsk Olje- og Petrokjemisk Fagforbund , NOPEF) was a trade union representing workers in the oil and petrochemical sector in Norway.
The union was founded in 1977, and immediately affiliated to the Norwegian Confederation of Trade Unions . By 1996, it had 12,33... | https://en.wikipedia.org/wiki/Norwegian_Oil_and_Petrochemical_Union |
The Norwegian Union of Chemical Industry Workers ( Norwegian : Norsk Kjemisk Industriarbeiderforbund , NKIF) was a trade union representing workers in the chemical industry in Norway .
The union was founded in 1924, as a split from the Norwegian Union of General Workers . [ 1 ] It affiliated with the Norwegian Confede... | https://en.wikipedia.org/wiki/Norwegian_Union_of_Chemical_Industry_Workers |
The NORYL family of modified resins consists of amorphous blends of polyphenylene oxides (PPO) or polyphenylene ether (PPE) resins with polystyrene . They combine the inherent benefits of PPE resin (affordable high heat resistance , good electrical insulation properties, excellent hydrolytic stability and the ability t... | https://en.wikipedia.org/wiki/Noryl |
The Nosé–Hoover thermostat is a deterministic algorithm for constant-temperature molecular dynamics simulations.
It was originally developed by Shuichi Nosé and was improved further by William G. Hoover . Although the heat bath of Nosé–Hoover thermostat consists of only one imaginary particle, simulation systems achiev... | https://en.wikipedia.org/wiki/Nosé–Hoover_thermostat |
In computing , " Not a typewriter " or ENOTTY [ 1 ] is an error code defined in the errno.h found on many Unix systems. This code is now used to indicate that an invalid ioctl (input/output control) number was specified in an ioctl system call .
This error originated in early UNIX . In Version 6 UNIX and earlier, I/O... | https://en.wikipedia.org/wiki/Not_a_typewriter |
A not evaluated ( NE ) species is one which has been categorized under the IUCN Red List of threatened species as not yet having been assessed by the International Union for Conservation of Nature . [ 1 ] [ 2 ] A species which is uncategorized and cannot be found in the IUCN repository is also considered not evaluated.... | https://en.wikipedia.org/wiki/Not_evaluated |
Nōtan ( 濃淡 ) is a design aesthetic referring to the use of light and shade while also implying a balance or harmony in their respective contrast. Its origins are said to lie in Asian art, best represented by the Taoist symbol of the yin and yang , although the concept itself is unique to art education in the United Sta... | https://en.wikipedia.org/wiki/Notan |
Notarikon ( Hebrew : נוֹטָרִיקוֹן , romanized : Noṭāriqon ) is a Talmudic method of interpreting Biblical words as acronyms. The same term may also be used for a Kabbalistic method of using the acronym of a Biblical verse as a name for God. Another variation uses the first and last letters, or the two middle letters o... | https://en.wikipedia.org/wiki/Notarikon |
In differential calculus , there is no single standard notation for differentiation . Instead, several notations for the derivative of a function or a dependent variable have been proposed by various mathematicians, including Leibniz , Newton , Lagrange , and Arbogast . The usefulness of each notation depends on the co... | https://en.wikipedia.org/wiki/Notation_for_differentiation |
In mechanical engineering and materials science , a notch refers to a V-shaped, U-shaped, or semi-circular defect deliberately introduced into a planar material. In structural components, a notch causes a stress concentration which can result in the initiation and growth of fatigue cracks. Notches are used in materials... | https://en.wikipedia.org/wiki/Notch_(engineering) |
The Notch signaling pathway is a highly conserved cell signaling system present in most animals . [ 1 ] Mammals possess four different notch receptors , referred to as NOTCH1 , NOTCH2 , NOTCH3 , and NOTCH4 . [ 2 ] The notch receptor is a single-pass transmembrane receptor protein. It is a hetero-oligomer composed of a ... | https://en.wikipedia.org/wiki/Notch_signaling_pathway |
The notch tensile strength ( NTS ) of a material is the value given by performing a standard tensile strength test on a notched specimen of the material. [ 1 ] The ratio between the NTS and the tensile strength is called the notch strength ratio (NSR).
This article about materials science is a stub . You can help Wiki... | https://en.wikipedia.org/wiki/Notch_tensile_strength |
Notepad+ is a freeware text editor for Windows operating systems and is intended as a replacement for the Notepad editor installed by default on Windows. [ 1 ] It has more formatting features but, like Notepad, works only with plain text. [ 2 ] It can open text files of any size, and a single instance of the program ca... | https://en.wikipedia.org/wiki/Notepad+ |
A Notice Advisory to Navstar Users ( NANU ) is a message issued jointly by the United States Coast Guard and the GPS Operations Center at Schriever Space Force Base in Colorado. [ 1 ] Such notices (NANUs) provide updates on the general health of individual satellites in the GPS constellation . NANUs are typically issue... | https://en.wikipedia.org/wiki/Notice_Advisory_to_Navstar_Users |
A Notification LED is a small RGB or monochrome LED light usually present on the front-facing screen bezel (display side) of smartphones and feature phones whose purpose is to blink or pulse to notify the phone user of missed calls, incoming SMS messages, notifications from other apps, low battery warning, etc., and op... | https://en.wikipedia.org/wiki/Notification_LED |
In information technology , a notification system is a combination of software and hardware that delivers a message to a set of recipients. [ 1 ] It commonly displays activity related to an account . [ 2 ] These systems are an important aspect of modern web applications . [ 3 ]
The widespread adoption of notification ... | https://en.wikipedia.org/wiki/Notification_system |
Notion is a productivity and note-taking web application developed by Notion Labs, Inc. It is an online-only organizational tool with options for both free and paid subscriptions. It is headquartered in San Francisco, California , United States, with offices in New York , London , Dublin , Hyderabad , Seoul , Sydney , ... | https://en.wikipedia.org/wiki/Notion_(productivity_software) |
The Notre Dame Journal of Formal Logic is a quarterly peer-reviewed scientific journal covering the foundations of mathematics and related fields of mathematical logic , as well as philosophy of mathematics . It was established in 1960 and is published by Duke University Press on behalf of the University of Notre Dame ... | https://en.wikipedia.org/wiki/Notre_Dame_Journal_of_Formal_Logic |
The Nottingham Asphalt Tester ( NAT ) is equipment used for rapid determination of modulus , permanent deformation and fatigue of bituminous mixtures. It uses cylindrical specimens that are cored from the highway or prepared in laboratory.
These mechanical properties are essential to people involved in the production... | https://en.wikipedia.org/wiki/Nottingham_Asphalt_Tester |
Nous ( UK : / n aʊ s / , [ 1 ] US : / n uː s / ), from Greek : νοῦς , is a concept from classical philosophy , sometimes equated to intellect or intelligence , for the faculty of the human mind necessary for understanding what is true or real . [ 2 ]
Alternative English terms used in philosophy include "understanding"... | https://en.wikipedia.org/wiki/Nous |
David Bierens de Haan (3 May 1822, in Amsterdam – 12 August 1895, in Leiden ) was a Dutch mathematician and historian of science .
Bierens de Haan was a son of the rich merchant Abraham Pieterszoon de Haan (1795–1880) and Catharina Jacoba Bierens (1797–1835). In 1843 he completed a study in the exact sciences and rece... | https://en.wikipedia.org/wiki/Nouvelles_tables_d'intégrales_définies |
A nova ( pl. novae or novas ) is a transient astronomical event that causes the sudden appearance of a bright, apparently "new" star (hence the name "nova", Latin for "new") that slowly fades over weeks or months. All observed novae involve white dwarfs in close binary systems , but causes of the dramatic appearance of... | https://en.wikipedia.org/wiki/Nova |
" Nova Methodus pro Maximis et Minimis " is the first published work on the subject of calculus . It was published by Gottfried Leibniz in the Acta Eruditorum in October 1684. [ 1 ] It is considered to be the birth of infinitesimal calculus . [ 2 ]
The full title of the published work is "Nova methodus pro maximis et ... | https://en.wikipedia.org/wiki/Nova_Methodus_pro_Maximis_et_Minimis |
The Novak–Tyson Model is a non-linear dynamics framework developed in the context of cell-cycle control by Bela Novak and John J. Tyson . It is a prevalent theoretical model that describes a hysteretic , bistable bifurcation of which many biological systems have been shown to express.
Bela Novak and John Tyson came fr... | https://en.wikipedia.org/wiki/Novak–Tyson_model |
The Novartis-Drew Award for Biomedical Research is an award jointly presented by Novartis and Drew University . It comprises a cash award (originally $2000) and a plaque. The award was initially created as the Ciba-Drew Award for Biomedical Research and renamed following the change of company name from Ciba-Geigy to No... | https://en.wikipedia.org/wiki/Novartis-Drew_Award |
Novel ecosystems are human-built, modified, or engineered niches of the Anthropocene . They exist in places that have been altered in structure and function by human agency. Novel ecosystems are part of the human environment and niche (including urban , suburban , and rural ), they lack natural analogs, and they have e... | https://en.wikipedia.org/wiki/Novel_ecosystem |
Novell Vibe is a web-based team collaboration platform developed by Novell . It was initially released by Novell in June 2008 under the name of Novell Teaming. Novell Vibe is a collaboration platform that can serve as a knowledge repository, document management system , project collaboration hub, process automation mac... | https://en.wikipedia.org/wiki/Novell_Vibe |
Novella Bridges is an African American chemical engineer , researcher, and an advocate for minorities in STEM . [ 1 ] [ 2 ] [ 3 ] She was born in 1972, and is a prominent figure in the field of inorganic chemistry . It was during her high school years that Bridges was introduced to the subject which she later pursued ... | https://en.wikipedia.org/wiki/Novella_Bridges |
Novena is an open-source computing hardware project designed by Andrew "bunnie" Huang and Sean "Xobs" Cross. The initial design of Novena started in 2012. [ 1 ] It was developed by Sutajio Ko-usagi Pte. Ltd. and funded by a crowdfunding campaign which began on April 15, 2014. The first offering was a 1.2 GHz Freescale ... | https://en.wikipedia.org/wiki/Novena_(computing_platform) |
In mathematics , Novikov's compact leaf theorem , named after Sergei Novikov , states that
Theorem: A smooth codimension-one foliation of the 3-sphere S 3 has a compact leaf. The leaf is a torus T 2 bounding a solid torus with the Reeb foliation .
The theorem was proved by Sergei Novikov in 1964. Earlier, Charles Ehr... | https://en.wikipedia.org/wiki/Novikov's_compact_leaf_theorem |
NovoGen is a proprietary form of 3D printing technology that allows scientists to assemble living tissue cells into a desired pattern. When combined with an extracellular matrix , the cells can be arranged into complex structures, such as organs . Designed by Organovo , [ 1 ] [ 2 ] the NovoGen technology has been succe... | https://en.wikipedia.org/wiki/NovoGen |
Novo Nordisk A/S is a Danish multinational pharmaceutical company headquartered in Bagsværd , [ 3 ] with production facilities in nine countries and affiliates or offices in five. Novo Nordisk is controlled by majority shareholder Novo Holdings A/S which holds approximately 28% of its shares and a majority (77%) of its... | https://en.wikipedia.org/wiki/Novo_Nordisk |
Novotext is a trade name for cotton textile - phenolic resin , essentially cotton-reinforced Bakelite . It was often used in car engines for gear wheels used to provide a direct drive to the camshaft as it is flexible and quiet-running. [ 1 ] One of the first luxury cars to use this material for its camshaft drive gea... | https://en.wikipedia.org/wiki/Novotext |
Novymonas esmeraldas is a protist and member of flagellated trypanosomatids . It is an obligate parasite in the gastrointestinal tract of a bug, and is in turn a host to symbiotic bacteria. It maintains strict mutualistic relationship with the bacteria as a sort of cell organelle ( endosymbiont ) so that it cannot lead... | https://en.wikipedia.org/wiki/Novymonas |
NowSecure (Formerly viaForensics ) is a Chicago-based mobile security company that publishes mobile app and device security software.
Andrew Hoog, former CEO and co-founder, served as a chief information officer (CIO) prior to his current roles. During his tenure as CIO, he conducted an internal investigation to deter... | https://en.wikipedia.org/wiki/NowSecure |
In mathematics , a nowhere continuous function , also called an everywhere discontinuous function , is a function that is not continuous at any point of its domain . If f {\displaystyle f} is a function from real numbers to real numbers, then f {\displaystyle f} is nowhere continuous if for each point x {\displaystyle ... | https://en.wikipedia.org/wiki/Nowhere_continuous_function |
In inorganic chemistry , a Nowotny chimney ladder phase ( NCL phase ) is a particular intermetallic crystal structure found with certain binary compounds . NLC phases are generally tetragonal and are composed of two separate sublattices. The first is a tetragonal array of transition metal atoms, generally from group 4 ... | https://en.wikipedia.org/wiki/Nowotny_phase |
The Nozaki–Hiyama–Kishi reaction is a nickel / chromium coupling reaction forming an alcohol from the reaction of an aldehyde with an allyl or vinyl halide. [ 1 ] In their original 1977 publication, Tamejiro Hiyama and Hitoshi Nozaki [ 2 ] reported on a chromium(II) salt solution prepared by reduction of chromic chlori... | https://en.wikipedia.org/wiki/Nozaki–Hiyama–Kishi_reaction |
The nozzle and flapper mechanism is a displacement type detector which converts mechanical movement into a pressure signal by covering the opening of a nozzle with a flat plate called the flapper . [ 1 ] This restricts fluid flow through the nozzle and generates a pressure signal.
It is a widely used mechanical means ... | https://en.wikipedia.org/wiki/Nozzle_and_flapper |
The no–no paradox is a distinctive paradox belonging to the family of the semantic paradoxes (like the Liar paradox ). It derives its name from the fact that it consists of two sentences each simply denying what the other says.
A variation on the paradox occurs already in Thomas Bradwardine ’s Insolubilia . [ 1 ] The ... | https://en.wikipedia.org/wiki/No–no_paradox |
Neptunium(III) fluoride or neptunium trifluoride is a salt of neptunium and fluorine with the formula NpF 3 .
Neptunium(III) fluoride can be prepared by reacting neptunium dioxide with a gas mixture of hydrogen and hydrogen fluoride at 500 °C: [ 1 ]
This inorganic compound –related article is a stub . You can help Wi... | https://en.wikipedia.org/wiki/NpF3 |
Neptunium(IV) fluoride or neptunium tetrafluoride is a inorganic compound with the formula NpF 4 . It is a green salt and is isostructural with UF 4 . [ 3 ]
Neptunium(IV) fluoride can be prepared by reacting neptunium(III) fluoride or neptunium dioxide with a gas mixture of oxygen and hydrogen fluoride at 500 °C: [ 1 ... | https://en.wikipedia.org/wiki/NpF4 |
Neptunium(V) fluoride or neptunium pentafluoride is a chemical compound of neptunium and fluorine with the formula NpF 5 .
Neptunium(V) fluoride can be prepared by reacting neptunium(VI) fluoride with iodine : [ 1 ]
From the equation above, iodine pentafluoride is a byproduct.
Neptunium(V) fluoride thermally decompo... | https://en.wikipedia.org/wiki/NpF5 |
Neptunium tetrafluoride
Neptunium(VI) fluoride (NpF 6 ) is the highest fluoride of neptunium , it is also one of seventeen known binary hexafluorides . It is a volatile orange crystalline solid. [ 1 ] It is relatively hard to handle, being very corrosive, volatile and radioactive. Neptunium hexafluoride is stable in d... | https://en.wikipedia.org/wiki/NpF6 |
Neptunium(IV) oxide , or neptunium dioxide , is a radioactive , olive green [ 5 ] cubic [ 6 ] crystalline solid with the formula NpO 2 . It is one of two stable oxides of neptunium , the other being neptunium(V) oxide . [ 7 ] It emits both α- and γ-particles. [ 4 ]
Industrially, neptunium dioxide is formed by precipi... | https://en.wikipedia.org/wiki/NpO2 |
npj 2D Materials and Applications , is an open access peer-reviewed scientific journal published by Nature Publishing Group . It focuses on 2D materials (such as thin films ), including fundamental behaviour, synthesis, properties and applications. [ 1 ]
According to the Journal Citation Reports , npj 2D Materials and... | https://en.wikipedia.org/wiki/Npj_2D_Materials_and_Applications |
ns (from network simulator ) is a name for a series of discrete event network simulators , specifically ns-1 , ns-2 , and ns-3 . All are discrete-event computer network simulators, primarily used in research [ 3 ] and teaching.
The first version of ns, known as ns-1, was developed at Lawrence Berkeley National Laborat... | https://en.wikipedia.org/wiki/Ns_(simulator) |
In mathematics , the n th-term test for divergence [ 1 ] is a simple test for the divergence of an infinite series :
If lim n → ∞ a n ≠ 0 {\displaystyle \lim _{n\to \infty }a_{n}\neq 0} or if the limit does not exist, then ∑ n = 1 ∞ a n {\displaystyle \sum _{n=1}^{\infty }a_{n}} diverges.
Many authors do not name thi... | https://en.wikipedia.org/wiki/Nth-term_test |
NuSTAR ( Nuclear Spectroscopic Telescope Array , also named Explorer 93 and SMEX-11 ) is a NASA space-based X-ray telescope that uses a conical approximation to a Wolter telescope to focus high energy X-rays from astrophysical sources, especially for nuclear spectroscopy , and operates in the range of 3 to 79 keV . [ 4... | https://en.wikipedia.org/wiki/NuSTAR |
Nuage are Drosophila melanogaster germline granules . Nuage are the hallmark of Drosophila melanogaster germline cells, which have an electron-dense perinuclear structure and can silence the selfish genetic elements in Drosophila melanogaster . [ 1 ] The term 'Nuage' comes from the French word for 'cloud', as they appe... | https://en.wikipedia.org/wiki/Nuage_(cell_biology) |
The Nuclear Energy Agency ( NEA ) is an intergovernmental agency that is organized under the Organisation for Economic Co-operation and Development (OECD). Originally formed on 1 February 1958 with the name European Nuclear Energy Agency ( ENEA )—the United States participated as an Associate Member—the name was change... | https://en.wikipedia.org/wiki/Nuclear_Energy_Agency |
The Nuclear Energy Board (officially titled An Bord Fuinnimh Núicléigh ) [ 1 ] was an Irish agency charged with developing nuclear power in Ireland. It was established in Ireland on 30 November 1973 by the Nuclear Energy (An Bord Fuinnimh Núicléigh) Act 1971 .
The board was responsible in the 1970s for pursuing the p... | https://en.wikipedia.org/wiki/Nuclear_Energy_Board |
The Nuclear Energy Institute ( NEI ) is a nuclear industry trade association in the United States, based in Washington, D.C.
The Nuclear Energy Institute represents the nuclear technologies industry. NEI’s stated mission “is to promote the use and growth of nuclear energy through efficient operations and effective pol... | https://en.wikipedia.org/wiki/Nuclear_Energy_Institute |
The Nuclear Energy Regulatory Agency ( Indonesian : Badan Pengawas Tenaga Nuklir , BAPETEN) is an Indonesian non-Ministerial Government Institution (LPND) which is under and responsible to the President.
State Committee for the Investigation of Radioactivity
The establishment of this committee was based on the many n... | https://en.wikipedia.org/wiki/Nuclear_Energy_Regulatory_Agency |
Nuclear Information Service ( NIS ) is an independent, non-profit research organisation which investigates the UK nuclear weapons programme and publishes information to stimulate informed debate on nuclear disarmament and related issues. [ 1 ]
NIS conducts original research, providing information on the public interes... | https://en.wikipedia.org/wiki/Nuclear_Information_Service |
The Nuclear Institute for Agriculture and Biology , also known as NIAB , ( Urdu : جوہری ادارہ برائے زراعت و حیاتیات ) is a Pakistani agriculture and food irradiation national research institute managed by the Pakistan Atomic Energy Commission . It is located in Faisalabad , Punjab . Along with the Nuclear Institute for... | https://en.wikipedia.org/wiki/Nuclear_Institute_for_Agriculture_and_Biology |
Nuclear Medicine and Biology is a peer-reviewed medical journal published by Elsevier that covers research on all aspects of nuclear medicine , including radiopharmacology , radiopharmacy and clinical studies of targeted radiotracers . It is the official journal of the Society of Radiopharmaceutical Sciences . Accordin... | https://en.wikipedia.org/wiki/Nuclear_Medicine_and_Biology |
The nuclear Overhauser effect ( NOE ) is the transfer of nuclear spin polarization from one population of spin-active nuclei (e.g. 1 H, 13 C, 15 N etc.) to another via cross-relaxation . A phenomenological definition of the NOE in nuclear magnetic resonance spectroscopy (NMR) is the change in the integrated intensity (... | https://en.wikipedia.org/wiki/Nuclear_Overhauser_effect |
Nuclear astrophysics studies the origin of the chemical elements and isotopes, and the role of nuclear energy generation, in cosmic sources such as stars , supernovae , novae , and violent binary-star interactions.
It is an interdisciplinary part of both nuclear physics and astrophysics , involving close collaboration... | https://en.wikipedia.org/wiki/Nuclear_astrophysics |
Nuclear atypia refers to abnormal appearance of cell nuclei . It is a term used in cytopathology and histopathology . Atypical nuclei are often pleomorphic .
Nuclear atypia can be seen in reactive changes, pre-neoplastic changes and malignancy . Severe nuclear atypia is, in most cases, considered an indicator of mali... | https://en.wikipedia.org/wiki/Nuclear_atypia |
Nuclear binding energy in experimental physics is the minimum energy that is required to disassemble the nucleus of an atom into its constituent protons and neutrons , known collectively as nucleons . The binding energy for stable nuclei is always a positive number, as the nucleus must gain energy for the nucleons to m... | https://en.wikipedia.org/wiki/Nuclear_binding_energy |
The concentration of calcium in the cell nucleus can increase in response to signals from the environment. Nuclear calcium is an evolutionary conserved potent regulator of gene expression that allows cells to undergo long-lasting adaptive responses. The 'Nuclear Calcium Hypothesis’ by Hilmar Bading describes nuclear ca... | https://en.wikipedia.org/wiki/Nuclear_calcium |
In nuclear physics , a nuclear chain reaction occurs when one single nuclear reaction causes an average of one or more subsequent nuclear reactions, thus leading to the possibility of a self-propagating series or "positive feedback loop" of these reactions. The specific nuclear reaction may be the fission of heavy isot... | https://en.wikipedia.org/wiki/Nuclear_chain_reaction |
Nuclear chemistry is the sub-field of chemistry dealing with radioactivity , nuclear processes, and transformations in the nuclei of atoms, such as nuclear transmutation and nuclear properties.
It is the chemistry of radioactive elements such as the actinides , radium and radon together with the chemistry associated w... | https://en.wikipedia.org/wiki/Nuclear_chemistry |
A nuclear clock or nuclear optical clock is an atomic clock being developed that will use the energy of a nuclear isomeric transition as its reference frequency, [ 1 ] instead of the atomic electron transition energy used by conventional atomic clocks. Such a clock is expected to be more accurate than the best current ... | https://en.wikipedia.org/wiki/Nuclear_clock |
The nuclear cross section of a nucleus is used to describe the probability that a nuclear reaction will occur. [ 1 ] [ 2 ] The concept of a nuclear cross section can be quantified physically in terms of "characteristic area" where a larger area means a larger probability of interaction. The standard unit for measuring... | https://en.wikipedia.org/wiki/Nuclear_cross_section |
Nuclear data represents measured (or evaluated) probabilities of various physical interactions involving the nuclei of atoms. It is used to understand the nature of such interactions by providing the fundamental input to many models and simulations, such as fission and fusion reactor calculations, shielding and radiati... | https://en.wikipedia.org/wiki/Nuclear_data |
Nuclear decommissioning is the process leading to the irreversible complete or partial closure of a nuclear facility, usually a nuclear reactor , with the ultimate aim at termination of the operating licence. The process usually runs according to a decommissioning plan , including the whole or partial dismantling and d... | https://en.wikipedia.org/wiki/Nuclear_decommissioning |
The nuclear drip line is the boundary beyond which atomic nuclei are unbound with respect to the emission of a proton or neutron.
An arbitrary combination of protons and neutrons does not necessarily yield a stable nucleus . One can think of moving up or to the right across the table of nuclides by adding a proton or ... | https://en.wikipedia.org/wiki/Nuclear_drip_line |
A nuclear emulsion plate is a type of particle detector first used in nuclear and particle physics experiments in the early decades of the 20th century. [ 1 ] [ 2 ] [ 3 ] It is a modified form of photographic plate that can be used to record and investigate fast charged particles like alpha-particles , nucleons , lepto... | https://en.wikipedia.org/wiki/Nuclear_emulsion |
Nuclear engineering is the engineering discipline concerned with designing and applying systems that utilize the energy released by nuclear processes. [ 1 ] [ 2 ] The most prominent application of nuclear engineering is the generation of electricity. Worldwide, some 440 nuclear reactors in 32 countries generate 10 perc... | https://en.wikipedia.org/wiki/Nuclear_engineering |
The Nuclear Ensemble Approach (NEA) is a general method for simulations of diverse types of molecular spectra. [ 1 ] It works by sampling an ensemble of molecular conformations (nuclear geometries) in the source state, computing the transition probabilities to the target states for each of these geometries, and perform... | https://en.wikipedia.org/wiki/Nuclear_ensemble_approach |
According to the principle of nuclear equivalence , the nuclei of essentially all differentiated adult cells of an individual are genetically (though not necessarily metabolically) identical to one another and to the nucleus of the zygote from which they descended. This means that virtually all somatic cells in an adul... | https://en.wikipedia.org/wiki/Nuclear_equivalence |
Nuclear ethics is a cross-disciplinary field of academic and policy-relevant study in which the problems associated with nuclear warfare , nuclear deterrence , nuclear arms control , nuclear disarmament , or nuclear energy are examined through one or more ethical or moral theories or frameworks. [ 1 ] [ 2 ] [ 3 ]
Nucl... | https://en.wikipedia.org/wiki/Nuclear_ethics |
A nuclear explosion is an explosion that occurs as a result of the rapid release of energy from a high-speed nuclear reaction . The driving reaction may be nuclear fission or nuclear fusion or a multi-stage cascading combination of the two, though to date all fusion-based weapons have used a fission device to initiate ... | https://en.wikipedia.org/wiki/Nuclear_explosion |
A nuclear explosive is an explosive device that derives its energy from nuclear reactions . Almost all nuclear explosive devices that have been designed and produced are nuclear weapons intended for warfare .
Other, non-warfare, applications for nuclear explosives have occasionally been proposed. For example, nuclear ... | https://en.wikipedia.org/wiki/Nuclear_explosive |
A nuclear export signal ( NES ) is a short target peptide containing 4 hydrophobic residues in a protein that targets it for export from the cell nucleus to the cytoplasm through the nuclear pore complex using nuclear transport . It has the opposite effect of a nuclear localization signal , which targets a protein loca... | https://en.wikipedia.org/wiki/Nuclear_export_signal |
Nuclear fallout is residual radioactive material propelled into the upper atmosphere following a nuclear blast , so called because it "falls out" of the sky after the explosion and the shock wave has passed. It commonly refers to the radioactive dust and ash created when a nuclear weapon explodes. The amount and sprea... | https://en.wikipedia.org/wiki/Nuclear_fallout |
This article uses Chernobyl as a case study of nuclear fallout effects on an ecosystem.
Officials used hydrometeorological data to create an image of what the potential nuclear fallout looked like after the Chernobyl disaster in 1986. [ 1 ] Using this method, they were able to determine the distribution of radionuclid... | https://en.wikipedia.org/wiki/Nuclear_fallout_effects_on_an_ecosystem |
Nuclear fission is a reaction in which the nucleus of an atom splits into two or more smaller nuclei. The fission process often produces gamma photons , and releases a very large amount of energy even by the energetic standards of radioactive decay .
Nuclear fission was discovered by chemists Otto Hahn and Fritz Stras... | https://en.wikipedia.org/wiki/Nuclear_fission |
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