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Bromine trifluoride is an interhalogen compound with the formula BrF 3 . At room temperature, it is a straw-coloured liquid with a pungent odor [ 5 ] which decomposes violently on contact with water and organic compounds . It is a powerful fluorinating agent and an ionizing inorganic solvent. It is used to produce uran... | https://en.wikipedia.org/wiki/BrF3 |
Bromine pentafluoride , Br F 5 , is an interhalogen compound and a fluoride of bromine . It is a strong fluorinating agent .
BrF 5 finds use in oxygen isotope analysis . Laser ablation of solid silicates in the presence of BrF 5 releases O 2 for subsequent analysis. [ 2 ] It has also been tested as an oxidizer in liqu... | https://en.wikipedia.org/wiki/BrF5 |
Bromyl fluoride is an inorganic compound of bromine , fluorine , and oxygen with the chemical formula BrO 2 F . [ 1 ] [ 2 ]
The compound forms a colorless volatile liquid that decomposes at temperatures above 10 °C. It is highly reactive and unstable, [ 4 ] and corrodes glass at room temperature. | https://en.wikipedia.org/wiki/BrFO2 |
Bromine mononitrate is an inorganic compound , derived from bromine and nitric acid with the chemical formula BrNO 3 . The compound is a yellow liquid, decomposes at temperatures above 0 °C. [ 1 ]
This compounds is extremely reactive due to its intrinsic instability, which makes handling and synthesis challenging. Bec... | https://en.wikipedia.org/wiki/BrNO3 |
Sodium bromite is a sodium salt of bromous acid . Its trihydrate , NaBrO 2 ·3H 2 O, has been isolated in crystal form. It is used by the textile refining industry as a desizing agent for oxidative starch removal. [ 1 ]
It is also used as an oxidizing agent for converting alcohols to aldehydes , such as the conversion ... | https://en.wikipedia.org/wiki/BrNaO2 |
Sodium bromate , the inorganic compound with the chemical formula of NaBrO 3 , is the sodium salt of bromic acid . It is a strong oxidant .
Sodium bromate is mainly used in continuous or batch dyeing processes involving sulfur or vat dyes and as a hair-permagent , chemical agent, or gold solvent in gold mines when use... | https://en.wikipedia.org/wiki/BrNaO3 |
[ 2 ]
Bromine dioxide is the chemical compound composed of bromine and oxygen with the formula BrO 2 . It forms unstable yellow [ 2 ] to yellow-orange [ 1 ] crystals. It was first isolated by R. Schwarz and M. Schmeißer in 1937 and is hypothesized to be important in the atmospheric reaction of bromine with ozone . [ 3... | https://en.wikipedia.org/wiki/BrO2 |
Perbromyl fluoride is an inorganic compound of bromine , fluorine , and oxygen with the chemical formula Br O 3 F . [ 1 ]
Synthesis of perbromyl fluoride is by the effect of antimony pentafluoride on a solution of potassium perbromate in hydrofluoric acid : [ 2 ]
Perbromyl fluoride is a colorless gas at room temperat... | https://en.wikipedia.org/wiki/BrO3F |
The plastograph , or Brabender plastograph , is a device for the continuous observation of torque in the shearing of a polymer with a range of temperatures and shear rates. The generic device records lubricity , plasticity , scorch , cure , shear , and heat stability .
Perhaps the most popular use of the plastograph ... | https://en.wikipedia.org/wiki/Brabender_plastograph |
In structural engineering , a braced frame is a structural system designed to resist wind and earthquake forces. Members in a braced frame are not allowed to sway laterally (which can be done using shear wall or a diagonal steel sections, similar to a truss ).
Most braced frames are concentric. This means that, where ... | https://en.wikipedia.org/wiki/Braced_frame |
In physics and mathematics , a brachistochrone curve (from Ancient Greek βράχιστος χρόνος (brákhistos khrónos) ' shortest time ' ), [ 1 ] or curve of fastest descent, is the one lying on the plane between a point A and a lower point B , where B is not directly below A , on which a bead slides frictionlessly under the i... | https://en.wikipedia.org/wiki/Brachistochrone_curve |
Brachymeiosis was a hypothesized irregularity in the sexual reproduction of ascomycete fungi , a variant of meiosis following an "extra" karyogamy (nuclear fusion) step. The hypothesized process would have transformed four diploid nuclei into eight haploid ones. The current scientific consensus is that brachymeiosis do... | https://en.wikipedia.org/wiki/Brachymeiosis |
A bracket is either of two tall fore- or back-facing punctuation marks commonly used to isolate a segment of text or data from its surroundings. [ 1 ] They come in four main pairs of shapes, as given in the box to the right, which also gives their names, that vary between British and American English . [ 2 ] "Brackets"... | https://en.wikipedia.org/wiki/Bracket |
In mathematics , brackets of various typographical forms, such as parentheses ( ), square brackets [ ], braces { } and angle brackets ⟨ ⟩, are frequently used in mathematical notation . Generally, such bracketing denotes some form of grouping: in evaluating an expression containing a bracketed sub-expression, the opera... | https://en.wikipedia.org/wiki/Bracket_(mathematics) |
In the mathematical field of knot theory , the bracket polynomial (also known as the Kauffman bracket ) is a polynomial invariant of framed links . Although it is not an invariant of knots or links (as it is not invariant under type I Reidemeister moves ), a suitably "normalized" version yields the famous knot invaria... | https://en.wikipedia.org/wiki/Bracket_polynomial |
Brackish marshes develop from salt marshes where a significant freshwater influx dilutes the seawater to brackish levels of salinity . This commonly happens upstream from salt marshes by estuaries of coastal rivers or near the mouths of coastal rivers with heavy freshwater discharges in the conditions of low tidal rang... | https://en.wikipedia.org/wiki/Brackish_marsh |
The Bradfield Scheme , a proposed Australian water diversion scheme, is an inland irrigation project that was designed to irrigate and drought -proof much of the western Queensland interior, as well as large areas of South Australia . It was devised by Dr John Bradfield (1867–1943), a Queensland born civil engineer , w... | https://en.wikipedia.org/wiki/Bradfield_Scheme |
The Bradford protein assay (also known as the Coomassie protein assay) was developed by Marion M. Bradford in 1976. [ 1 ] It is a quick and accurate [ 2 ] spectroscopic analytical procedure used to measure the concentration of protein in a solution. The reaction is dependent on the amino acid composition of the measure... | https://en.wikipedia.org/wiki/Bradford_protein_assay |
The Bradsher cycloaddition reaction , also known as the Bradsher cyclization reaction is a form of the Diels–Alder reaction which involves the [4+2] addition of a common dienophile with a cationic aromatic azadiene such as acridizinium or isoquinolinium .
The Bradsher cycloaddition was first reported by C. K. Bradsher... | https://en.wikipedia.org/wiki/Bradsher_cycloaddition |
Bradykinin (BK) (from Greek brady- 'slow' + -kinin , kīn(eîn) 'to move') is a peptide that promotes inflammation . It causes arterioles to dilate (enlarge) via the release of prostacyclin , nitric oxide , and endothelium-derived hyperpolarizing factor and makes veins constrict, via prostaglandin F2 , thereby leading to... | https://en.wikipedia.org/wiki/Bradykinin_hypothesis |
Bradyrhizobium japonicum is a species of legume - root nodulating , microsymbiotic nitrogen-fixing bacteria. The species is one of many Gram-negative , rod-shaped bacteria commonly referred to as rhizobia . [ citation needed ] Within that broad classification, which has three groups, taxonomy studies using DNA sequenci... | https://en.wikipedia.org/wiki/Bradyrhizobium_japonicum |
A bradytroph is a strain of an organism that exhibits slow growth in the absence of an external source of a particular metabolite . This is usually due to a defect in an enzyme required in the metabolic pathway producing this chemical. Such defects are the result of mutations in the genes encoding these enzymes. As the... | https://en.wikipedia.org/wiki/Bradytroph |
The Braefoot Battery was a World War I coastal defence gun battery defending the Firth of Forth . The battery was constructed in 1915 at Braefoot Point, then part of the Earl of Moray 's Donibristle Estate. The site is situated between the new town of Dalgety Bay and Aberdour in Fife .
In the First World War three lin... | https://en.wikipedia.org/wiki/Braefoot_Battery |
Braess's paradox is the observation that adding one or more roads to a road network can slow down overall traffic flow through it. The paradox was first discovered by Arthur Pigou in 1920, [ 1 ] and later named after the German mathematician Dietrich Braess in 1968. [ 2 ]
The paradox may have analogies in electrical p... | https://en.wikipedia.org/wiki/Braess's_paradox |
In many areas of science, Bragg's law — also known as Wulff –Bragg's condition or Laue–Bragg interference — is a special case of Laue diffraction that gives the angles for coherent scattering of waves from a large crystal lattice. It describes how the superposition of wave fronts scattered by lattice planes leads to a ... | https://en.wikipedia.org/wiki/Bragg's_law |
The Australian Centre for Neutron Scattering (ACNS), formerly the Bragg Institute, is a landmark neutron and X-ray scattering facility in Australia . It is located at the Australian Nuclear Science and Technology Organisation 's ( ANSTO ) Lucas Heights site, 40 km south-west of Sydney , in New South Wales , Australia.
... | https://en.wikipedia.org/wiki/Bragg_Institute |
In physics , a Bragg plane is a plane in reciprocal space which bisects a reciprocal lattice vector, K {\displaystyle \scriptstyle \mathbf {K} } , at right angles. [ 1 ] The Bragg plane is defined as part of the Von Laue condition for diffraction peaks in x-ray diffraction crystallography .
Considering the adjacent di... | https://en.wikipedia.org/wiki/Bragg_plane |
Bragg–Gray cavity theory relates the radiation dose in a cavity volume of material g {\displaystyle g} to the dose that would exist in a surrounding medium m {\displaystyle m} in the absence of the cavity volume. It was developed in 1936 by British scientists Louis Harold Gray , William Henry Bragg , and William Lawre... | https://en.wikipedia.org/wiki/Bragg–Gray_cavity_theory |
This problem was given in India by the mathematician Brahmagupta in 628 AD in his treatise Brahma Sputa Siddhanta :
Solve the Pell's equation
for integers x , y > 0 {\displaystyle x,y>0} .
Brahmagupta gave the smallest solution as
Weisstein, Eric W. "Brahmagupta's Problem" . MathWorld .
This article about the hist... | https://en.wikipedia.org/wiki/Brahmagupta's_problem |
Brahmagupta polynomials are a class of polynomials associated with the Brahmagupa matrix which in turn is associated with the Brahmagupta's identity . The concept and terminology were introduced by E. R. Suryanarayan, University of Rhode Island, Kingston in a paper published in 1996. [ 1 ] [ 2 ] [ 3 ] These polynomia... | https://en.wikipedia.org/wiki/Brahmagupta_polynomials |
In geometry , Brahmagupta's theorem states that if a cyclic quadrilateral is orthodiagonal (that is, has perpendicular diagonals ), then the perpendicular to a side from the point of intersection of the diagonals always bisects the opposite side. [ 1 ] It is named after the Indian mathematician Brahmagupta (598-668). [... | https://en.wikipedia.org/wiki/Brahmagupta_theorem |
A Brahmagupta triangle is a triangle whose side lengths are consecutive positive integers and area is a positive integer. [ 1 ] [ 2 ] The triangle whose side lengths are 3, 4, 5 is a Brahmagupta triangle and so also is the triangle whose side lengths are 13, 14, 15. The Brahmagupta triangle is a special case of the Her... | https://en.wikipedia.org/wiki/Brahmagupta_triangle |
A braid-breaker is a filter that prevents television interference (TVI). In many cases, TVI is caused by a high field strength of a nearby high frequency (HF) transmitter, the aerial down lead plugged into the back of the TV acts as a longwire antenna or as a simple vertical element. The radio frequency (RF) current fl... | https://en.wikipedia.org/wiki/Braid-breaker |
Braid bars , or mid-channel bars , are river landforms typically present in braided river channels . These formations have many names, including medial, longitudinal, crescentic, and transverse bars, as well as the more colloquial sandflat. [ 1 ] Braid bars are distinguished from point bars due to their presence in th... | https://en.wikipedia.org/wiki/Braid_bar |
In mathematics , a braided vector space V {\displaystyle \;V} is a vector space together with an additional structure map τ {\displaystyle \tau } symbolizing interchanging of two vector tensor copies :
such that the Yang–Baxter equation is fulfilled. Hence drawing tensor diagrams with τ {\displaystyle \tau } an overcr... | https://en.wikipedia.org/wiki/Braided_vector_space |
Brain-specific angiogenesis inhibitor s are G-protein coupled receptors belonging to the class B secretin subfamily. [ 1 ] Members include:
This transmembrane receptor -related article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Brain-specific_angiogenesis_inhibitor |
Brain-specific homeobox is a protein that in humans is encoded by the BSX gene . [ 1 ]
Bsx is an evolutionarily highly-conserved homeodomain-containing transcription factor that belongs to the ANTP-class. [ 2 ] In mouse it has been shown to be expressed in the telencephalic septum , pineal gland , the mammillary bodie... | https://en.wikipedia.org/wiki/Brain-specific_homeobox |
Brain mapping is a set of neuroscience techniques predicated on the mapping of (biological) quantities or properties onto spatial representations of the (human or non-human) brain resulting in maps .
According to the definition established in 2013 by Society for Brain Mapping and Therapeutics (SBMT), brain mapping is ... | https://en.wikipedia.org/wiki/Brain_mapping |
The brain storm optimization algorithm is a heuristic algorithm that focuses on solving multi-modal problems, such as radio antennas design worked on by Yahya Rahmat-Samii , inspired by the brainstorming process, proposed by Dr. Yuhui Shi . [ 1 ] [ 2 ]
More than 200 papers related to BSO algorithms have appeared in va... | https://en.wikipedia.org/wiki/Brain_storm_optimization_algorithm |
Brainbow is a process by which individual neurons in the brain can be distinguished from neighboring neurons using fluorescent proteins. By randomly expressing different ratios of red, green, and blue derivatives of green fluorescent protein in individual neurons, it is possible to flag each neuron with a distinctive c... | https://en.wikipedia.org/wiki/Brainbow |
Brainshuttle or brain shuttle is a technology developed by Roche to help molecules such as monoclonal antibodies to cross the blood-brain barrier more than they would otherwise. It has been tested with anti-amyloid monoclonal antibodies such as trontinemab . [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] [ 6 ]
This pharmacology -relat... | https://en.wikipedia.org/wiki/Brainshuttle |
A brain–brain interface is a direct communication pathway between the brain of one animal and the brain of another animal.
Brain to brain interfaces have been used to help rats collaborate with each other. When a second rat was unable to choose the correct lever, the first rat noticed (not getting a second reward), an... | https://en.wikipedia.org/wiki/Brain–brain_interface |
A Braitenberg vehicle is a concept conceived in a thought experiment by the Italian cyberneticist Valentino Braitenberg in his book Vehicles: Experiments in Synthetic Psychology . The book models the animal world in a minimalistic and constructive way, from simple reactive behaviours (like phototaxis ) through the simp... | https://en.wikipedia.org/wiki/Braitenberg_vehicle |
Braking action in aviation is a description of how easily an aircraft can stop after landing on a runway . Either pilots or airport management can report the braking action according to the U.S. Federal Aviation Administration . [ 1 ]
When reporting braking action, any of the following terms may be used: Good; Medium;... | https://en.wikipedia.org/wiki/Braking_action |
Branca Edmée Marques de Sousa Torres (Lisbon, 14 April 1899 - Lisbon, 19 July 1986) was a leading Portuguese specialist in the peaceful applications of nuclear technology who obtained a doctorate in Paris under the guidance of Marie Curie . Returning to Lisbon she founded the Radiochemistry Laboratory, where she contin... | https://en.wikipedia.org/wiki/Branca_Edmée_Marques |
Branch migration is the process by which base pairs on homologous DNA strands are consecutively exchanged at a Holliday junction , moving the branch point up or down the DNA sequence. [ 1 ] Branch migration is the second step of genetic recombination , following the exchange of two single strands of DNA between two hom... | https://en.wikipedia.org/wiki/Branch_migration |
In computer programming , a branch table or jump table is a method of transferring program control ( branching ) to another part of a program (or a different program that may have been dynamically loaded) using a table of branch or jump instructions . It is a form of multiway branch . The branch table construction is c... | https://en.wikipedia.org/wiki/Branch_table |
In biology, a branched DNA assay is a signal amplification assay (as opposed to a target amplification assay) that is used to detect nucleic acid molecules. [ 1 ]
A branched DNA assay begins with a dish or some other solid support (e.g., a plastic dipstick). The dish is peppered with small, single stranded DNA molecul... | https://en.wikipedia.org/wiki/Branched_DNA_assay |
Botany is a natural science concerned with the study of plants . The main branches of botany (also referred to as "plant science") are commonly divided into three groups: core topics, applied topics which study the ways in which plants may be used for economic benefit in horticulture, core topics which associate with a... | https://en.wikipedia.org/wiki/Branches_of_botany |
Geometry is a branch of mathematics concerned with questions of shape, size, relative position of figures, and the properties of space. Geometry is one of the oldest mathematical sciences.
History of geometry | https://en.wikipedia.org/wiki/Branches_of_geometry |
The branches of microbiology can be classified into pure and applied sciences . [ 1 ] Microbiology can be also classified based on taxonomy , in the cases of bacteriology , mycology , protozoology , and phycology . There is considerable overlap between the specific branches of microbiology with each other and with othe... | https://en.wikipedia.org/wiki/Branches_of_microbiology |
Branches of physics include classical mechanics ; thermodynamics and statistical mechanics ; electromagnetism and photonics ; relativity; quantum mechanics, atomic physics, and molecular physics; optics and acoustics; condensed matter physics; high-energy particle physics and nuclear physics; and chaos theory and cosmo... | https://en.wikipedia.org/wiki/Branches_of_physics |
branched chain : A chain with at least one branch point intermediate between the boundary units. [ 1 ] branch (side chain, pendant chain) : An oligomer molecule or polymeric offshoot from a macromolecular chain. (See Gold Book entry for note.) [ 2 ]
In polymer chemistry , branching is the regular or irregular attachme... | https://en.wikipedia.org/wiki/Branching_(polymer_chemistry) |
CORDIC ( coordinate rotation digital computer ), Volder's algorithm , Digit-by-digit method , Circular CORDIC ( Jack E. Volder ), [ 1 ] [ 2 ] Linear CORDIC , Hyperbolic CORDIC (John Stephen Walther), [ 3 ] [ 4 ] and Generalized Hyperbolic CORDIC ( GH CORDIC ) (Yuanyong Luo et al.), [ 5 ] [ 6 ] is a simple and efficient... | https://en.wikipedia.org/wiki/Branching_CORDIC |
In particle physics and nuclear physics , the branching fraction (or branching ratio ) for a decay is the fraction of particles which decay by an individual decay mode or with respect to the total number of particles which decay. It applies to either the radioactive decay of atoms or the decay of elementary particles .... | https://en.wikipedia.org/wiki/Branching_fraction |
BrandSafway is a construction and civil engineering company in the United States . BrandSafway has customers in 30 countries and has annual sales of 5 billion per year. [ 1 ] The company provides Safety equipment to businesses around the world. [ 2 ] They have 114 locations in the United States and Canada. [ 3 ] The co... | https://en.wikipedia.org/wiki/BrandSafway |
A brand page (also known as a page or fan page ), in online social networking parlance, is a profile on a social networking website which is considered distinct from an actual user profile in that it is created and managed by at least one other registered user as a representation of a non-personal online identity . Thi... | https://en.wikipedia.org/wiki/Brand_page |
In mathematics, Brandt matrices are matrices , introduced by Brandt ( 1943 ), that are related to the number of ideals of given norm in an ideal class of a definite quaternion algebra over the rationals , and that give a representation of the Hecke algebra .
Eichler (1955) calculated the traces of the Brandt matrices.... | https://en.wikipedia.org/wiki/Brandt_matrix |
Brane cosmology refers to several theories in particle physics and cosmology related to string theory , superstring theory and M-theory .
The central idea is that the visible, four-dimensional spacetime is restricted to a brane inside a higher-dimensional space, called the "bulk" (also known as "hyperspace"). If the a... | https://en.wikipedia.org/wiki/Brane_cosmology |
Branislava Peruničić-Draženović (10 July 1936 – 17 March 2025) was a Bosnian academic who was Emeritus Professor of Control Engineering at the University of Sarajevo who was elected to the Academy of Sciences and Arts of Bosnia and Herzegovina in 1986.
Peruničić studied engineering at the University of Belgrade . She ... | https://en.wikipedia.org/wiki/Branislava_Peruničić |
Branko Grünbaum ( Hebrew : ברנקו גרונבאום ; 2 October 1929 – 14 September 2018) [ 1 ] was a Croatian-born mathematician of Jewish descent [ 2 ] and a professor emeritus at the University of Washington in Seattle . He received his Ph.D. in 1957 from Hebrew University of Jerusalem . [ 3 ]
Grünbaum was born in Osijek , ... | https://en.wikipedia.org/wiki/Branko_Grünbaum |
Brass is an alloy of copper and zinc , in proportions which can be varied to achieve different colours and mechanical, electrical, acoustic and chemical properties, [ 1 ] but copper typically has the larger proportion, generally 2 ⁄ 3 copper and 1 ⁄ 3 zinc. In use since prehistoric times, it is a substitutional alloy :... | https://en.wikipedia.org/wiki/Brass |
A brass mill is a mill which processes brass . Brass mills are common in England; many date from long before the Industrial Revolution .
This industry -related article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Brass_mill |
Brass models are scale models typically of railroad equipment, bridges and occasionally of buildings, made from brass or similar alloys . Although die-cast or plastic models have made considerable advances in late 1990s and continue to improve, brass models offer finer details. Brass models, considered to be collector'... | https://en.wikipedia.org/wiki/Brass_model |
Brassica rapa is a plant species that has been widely cultivated into many forms, including the turnip (a root vegetable ), komatsuna , napa cabbage , bomdong , bok choy , and rapini .
Brassica rapa subsp. oleifera is an oilseed commonly known as turnip rape , field mustard , bird's rape , and keblock . [ 2 ] [ 3 ] [ ... | https://en.wikipedia.org/wiki/Brassica_rapa |
The Brauer Height Zero Conjecture is a conjecture in modular representation theory of finite groups relating the degrees of the complex irreducible characters in a Brauer block and the structure of its defect groups . It was formulated by Richard Brauer in 1955.
Let G {\displaystyle G} be a finite group and p {\displa... | https://en.wikipedia.org/wiki/Brauer's_height_zero_conjecture |
Richard Brauer 's k(B) Conjecture is a conjecture in modular representation theory of finite groups relating the number of complex irreducible characters in a Brauer block and the order of its defect groups . It was first announced in 1955. [ 1 ] It is Problem 20 in Brauer's list of problems. [ 2 ]
Let G {\displaystyl... | https://en.wikipedia.org/wiki/Brauer's_k(B)_conjecture |
In mathematics , Brauer's theorem , named for Richard Brauer , is a result on the representability of 0 by forms over certain fields in sufficiently many variables. [ 1 ]
Let K be a field such that for every integer r > 0 there exists an integer ψ( r ) such that for n ≥ ψ(r) every equation
has a non-trivial (i.e. not... | https://en.wikipedia.org/wiki/Brauer's_theorem_on_forms |
In geometry and crystallography , a Bravais lattice , named after Auguste Bravais ( 1850 ), [ 1 ] is an infinite array of discrete points generated by a set of discrete translation operations described in three dimensional space by
where the n i are any integers, and a i are primitive translation vectors , or primitiv... | https://en.wikipedia.org/wiki/Bravais_lattice |
The Bray–Liebhafsky reaction is a chemical clock first described by William C. Bray in 1921 and the first oscillating reaction in a stirred homogeneous solution. [ 1 ] He investigated the role of the iodate ( IO − 3 ), the anion of iodic acid , in the catalytic conversion of hydrogen peroxide to oxygen and water by the... | https://en.wikipedia.org/wiki/Bray–Liebhafsky_reaction |
In premixed turbulent combustion, Bray–Moss–Libby (BML) model is a closure model for a scalar field, built on the assumption that the reaction sheet is infinitely thin compared with the turbulent scales, so that the scalar can be found either at the state of burnt gas or unburnt gas. The model is named after Kenneth Br... | https://en.wikipedia.org/wiki/Bray–Moss–Libby_model |
Braze, Inc. is an American cloud-based software company based in New York City . [ 4 ] [ 5 ] It is a customer engagement platform used by businesses for multichannel marketing . [ 5 ]
Braze was co-founded as Appboy in 2011 by Bill Magnuson, Jon Hyman, and Mark Ghermezian, [ 6 ] who raised $3 million from investors to ... | https://en.wikipedia.org/wiki/Braze,_Inc. |
The Brazilian Astronomy and Astronautics Olympiad (in Portuguese : Olimpíada Brasileira de Astronomia e Astronáutica - OBA ) is a national astronomy competition realized since 1998 in Brazilian schools by the Brazilian Astronomical Society (SAB). [ 1 ] Since 2005, the Brazilian Space Agency (AEB) started to participate... | https://en.wikipedia.org/wiki/Brazilian_Astronomy_Olympiad |
The Brazilian Chemical Society ( Sociedade Brasileira de Química ) is a not for profit organization that supports Chemistry in Brazil. [ 1 ] [ 2 ] It was founded in 1977. [ 3 ]
It publishes the Journal of the Brazilian Chemical Society .
This article about a chemistry organization is a stub . You can help Wikipedia b... | https://en.wikipedia.org/wiki/Brazilian_Chemical_Society |
The Brazilian Health Regulatory Agency (Portuguese: Agência Nacional de Vigilância Sanitária , Anvisa , literally National Health Surveillance Agency) is a regulatory body of the Brazilian government, created in 1999 during President Fernando Henrique Cardoso 's term of office. It is responsible for the regulation and ... | https://en.wikipedia.org/wiki/Brazilian_Health_Regulatory_Agency |
The Brazilian Journal of Chemical Engineering publishes papers, reporting basic and applied research and innovation in the field of chemical engineering and related areas. It was first published by the Associação Brasileira de Engenharia Química , São Paulo, in 1983 as the Revista Brasileira de Engenharia, Caderno de ... | https://en.wikipedia.org/wiki/Brazilian_Journal_of_Chemical_Engineering |
The Brazilian–Argentine Agency for Accounting and Control of Nuclear Materials ( ABACC ; Portuguese : Agência Brasileiro-Argentina de Contabilidade e Controle de Materiais Nucleares ; Spanish : Agencia Brasileño-Argentina de Contabilidad y Control de Materiales Nucleares ) is a binational safeguards agency playing an a... | https://en.wikipedia.org/wiki/Brazilian–Argentine_Agency_for_Accounting_and_Control_of_Nuclear_Materials |
Bra–ket notation , also called Dirac notation , is a notation for linear algebra and linear operators on complex vector spaces together with their dual space both in the finite-dimensional and infinite-dimensional case. It is specifically designed to ease the types of calculations that frequently come up in quantum mec... | https://en.wikipedia.org/wiki/Bra–ket_notation |
Break-in or breaking in , also known as run-in or running in , is the procedure of conditioning a new piece of equipment by giving it an initial period of running, usually under light load, but sometimes under heavy load or normal load. It is generally a process of moving parts wearing against each other to produce the... | https://en.wikipedia.org/wiki/Break-in_(mechanical_run-in) |
A break junction is an electronic device which consists of two metal wires separated by a very thin gap, on the order of the inter-atomic spacing (less than a nanometer ). This can be done by physically pulling the wires apart or through chemical etching or electromigration . [ 1 ] As the wire breaks, the separation be... | https://en.wikipedia.org/wiki/Break_junction |
Breaking capacity or interrupting rating [ 1 ] [ 2 ] is the current that a fuse , circuit breaker , or other electrical apparatus is able to interrupt without being destroyed or causing an electric arc with unacceptable duration. The prospective short-circuit current that can occur under short circuit conditions should... | https://en.wikipedia.org/wiki/Breaking_capacity |
Breakover angle or rampover angle is the maximum possible supplementary angle (usually expressed in degrees) that a vehicle , with at least one forward wheel and one rear wheel, can drive over without the apex of that angle touching any point of the vehicle other than the wheels. [ 1 ] [ 2 ] [ 3 ] This definition is co... | https://en.wikipedia.org/wiki/Breakover_angle |
A breakthrough curve in adsorption is the course of the effluent adsorptive concentration at the outlet of a fixed bed adsorber. [ 1 ] Breakthrough curves are important for adsorptive separation technologies and for the characterization of porous materials. [ 2 ]
Since almost all adsorptive separation processes are dy... | https://en.wikipedia.org/wiki/Breakthrough_curve |
A breakthrough infection is a case of illness in which a vaccinated individual becomes infected with the illness, because the vaccine has failed to provide complete immunity against the pathogen (currently only viruses ). [ 1 ] Breakthrough infections have been identified in individuals immunized against a variety of d... | https://en.wikipedia.org/wiki/Breakthrough_infection |
The Breakthrough of the Year is an annual award for the most significant development in scientific research made by the AAAS journal Science , an academic journal covering all branches of science. [ 1 ]
Originating in 1989 as the Molecule of the Year , [ 2 ] and inspired by Time 's Person of the Year , it was renamed ... | https://en.wikipedia.org/wiki/Breakthrough_of_the_Year |
Breast milk (sometimes spelled as breastmilk ) or mother's milk is milk produced by the mammary glands in the breasts of women. Breast milk is the primary source of nutrition for newborn infants , comprising fats, proteins, carbohydrates, and a varying composition of minerals and vitamins. Breast milk also contains sub... | https://en.wikipedia.org/wiki/Breast_milk |
Breastmilk medicine refers to the non-nutritional usage of human breast milk (HBM) as a medicine or therapy to cure diseases. Breastmilk is perceived as an important food that provides essential nutrition to infants. It also provides protection in terms of immunity by direct transfer of antibodies from mothers to infan... | https://en.wikipedia.org/wiki/Breastmilk_medicine |
Breath-figure self-assembly is the self-assembly process of the formation of honeycomb micro-scaled polymer patterns by the condensation of water droplets. "Breath-figure" refers to the fog that forms when water vapor contacts a cold surface. [ 1 ] [ 2 ] [ 3 ] In the modern era systematic study of the process of breath... | https://en.wikipedia.org/wiki/Breath-figure_self-assembly |
A breathalyzer or breathalyser (a portmanteau of breath and analyzer/analyser ), also called an alcohol meter , is a device for measuring breath alcohol content (BrAC). It is commonly utilized by law enforcement officers whenever they initiate traffic stops . The name is a genericized trademark of the Breathalyzer bran... | https://en.wikipedia.org/wiki/Breathalyzer |
In differential geometry , a breather surface is a one-parameter family of mathematical surfaces which correspond to breather solutions [ 1 ] of the sine-Gordon equation , a differential equation appearing in theoretical physics . The surfaces have the remarkable property that they have constant curvature − 1 {\display... | https://en.wikipedia.org/wiki/Breather_surface |
A breathing gas is a mixture of gaseous chemical elements and compounds used for respiration . Air is the most common and only natural breathing gas, but other mixtures of gases, or pure oxygen, are also used in breathing equipment and enclosed habitats. Oxygen is the essential component for any breathing gas. Breathin... | https://en.wikipedia.org/wiki/Breathing_gas |
Bredig's arc method or electrical disintegration is a method of preparation of colloidal solution , of metals such as gold , silver or platinum .
This method consists of both dispersion and condensation . An arc is struck between electrodes of the desired metal, under the surface of water containing some stabilizing ... | https://en.wikipedia.org/wiki/Bredig's_arc_method |
In organic chemistry , an anti-Bredt molecule is a bridged molecule with a double bond at the bridgehead . Bredt's rule is the empirical observation that such molecules only form in large ring systems. For example, two of the following norbornene isomers violate Bredt's rule, and are too unstable to prepare:
The rule... | https://en.wikipedia.org/wiki/Bredt's_rule |
Breed method is a laboratory technique used for counting microorganisms in milk. It was introduced in 1910 by American biologists Samuel Cate Prescott and Robert Stanley Breed . [ 1 ]
It is a method for somatic cell count, to know the number of living and dead microorganisms. When the method only recounts living organ... | https://en.wikipedia.org/wiki/Breed_method |
Breeding back is a form of artificial selection by the deliberate selective breeding of domestic (but not exclusively) animals, in an attempt to achieve an animal breed with a phenotype that resembles a wild type ancestor, usually one that has gone extinct. Breeding back is not to be confused with dedomestication .
Th... | https://en.wikipedia.org/wiki/Breeding_back |
A breeding blanket is a device used in nuclear engineering to transmute quantities of an element, using the neutron flux from a fission reactor or fusion reactor . In the fission context, breeding blankets have been used since the 1950s in breeder reactors , to manufacture fission fuel from fertile material . In the fu... | https://en.wikipedia.org/wiki/Breeding_blanket |
In discrete mathematics , the Bregman–Minc inequality , or Bregman's theorem , allows one to estimate the permanent of a binary matrix via its row or column sums. The inequality was conjectured in 1963 by Henryk Minc and first proved in 1973 by Lev M. Bregman . [ 1 ] [ 2 ] Further entropy -based proofs have been given ... | https://en.wikipedia.org/wiki/Bregman–Minc_inequality |
The Breit equation , or Dirac–Coulomb–Breit equation , is a relativistic wave equation derived by Gregory Breit in 1929 based on the Dirac equation , which formally describes two or more massive spin -1/2 particles ( electrons , for example) interacting electromagnetically to the first order in perturbation theory . It... | https://en.wikipedia.org/wiki/Breit_equation |
In organoboron chemistry , the Brellochs reaction provides a way to generate the mono carboranes . The use of acetylenes to insert two carbons into boron hydrides is well established. The Brellochs method uses formaldehyde to insert single carbon atoms into boron hydrides. [ 1 ]
Illustrative is the synthesis of CB 9 ... | https://en.wikipedia.org/wiki/Brellochs_reaction |
In particle physics , bremsstrahlung ( / ˈ b r ɛ m ʃ t r ɑː l ə ŋ / ; [ 1 ] German: [ˈbʁɛms.ʃtʁaːlʊŋ] ⓘ ; from German bremsen ' to brake ' and Strahlung ' radiation ' ) is electromagnetic radiation produced by the deceleration of a charged particle when deflected by another charged particle, typically an electron by an... | https://en.wikipedia.org/wiki/Bremsstrahlung |
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