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In fluid dynamics , Blasius theorem states that [ 1 ] [ 2 ] [ 3 ] the force experienced by a two-dimensional fixed body in a steady irrotational flow is given by
and the moment about the origin experienced by the body is given by
Here,
The first formula is sometimes called Blasius–Chaplygin formula . [ 4 ]
The theo... | https://en.wikipedia.org/wiki/Blasius_theorem |
A blast damper [ 1 ] is used to protect occupants and equipment of a structure against overpressures resultant of an explosion. The blast dampers normally protect air inlets and exhaust penetrations in an otherwise hardened structure. Blast dampers are related or identical to blast valves , the latter name is generally... | https://en.wikipedia.org/wiki/Blast_damper |
A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron , but also others such as lead or copper . Blast refers to the combustion air being supplied above atmospheric pressure . [ 1 ]
In a blast furnace, fuel ( coke ), ores , and flux ( limestone ) are cont... | https://en.wikipedia.org/wiki/Blast_furnace |
Blast furnace gas (BFG) [ 1 ] is a by-product of blast furnaces that is generated when the iron ore is reduced with coke to metallic iron . It has a very low heating value , about 3.5 MJ/m 3 (93 BTU /cu.ft), [ 2 ] because it consists of about 51 vol% nitrogen and 22 vol% carbon dioxide , which are not flammable. The re... | https://en.wikipedia.org/wiki/Blast_furnace_gas |
A blast injury is a complex type of physical trauma resulting from direct or indirect exposure to an explosion . [ 1 ] Blast injuries occur with the detonation of high-order explosives as well as the deflagration of low order explosives . These injuries are compounded when the explosion occurs in a confined space.
Bla... | https://en.wikipedia.org/wiki/Blast_injury |
A blast wall is a barrier designed to protect vulnerable buildings or other structures and the people inside them from the effects of a nearby explosion , whether caused by industrial accident , military action , or terrorism .
Research by Cranfield University Defence Academy , building on earlier work, has shown that... | https://en.wikipedia.org/wiki/Blast_wall |
In fluid dynamics , a blast wave is the increased pressure and flow resulting from the deposition of a large amount of energy in a small, very localised volume. The flow field can be approximated as a lead shock wave , followed by a similar subsonic flow field. In simpler terms, a blast wave is an area of pressure expa... | https://en.wikipedia.org/wiki/Blast_wave |
Blasticidin S is an antibiotic that is used in biology research for selecting cells in cell culture . Cells of interest can express the blasticidin resistance genes BSD or bsr, and can then survive treatment with the antibiotic. Blasticidin S is a nucleoside analogue antibiotic, resembling the nucleoside cytidine . Bla... | https://en.wikipedia.org/wiki/Blasticidin_S |
A blasting machine or shot exploder (commonly called a plunger ) is a portable source of electric current to reliably fire a blasting cap to trigger a main explosive charge. It is mostly used in mining and demolition .
The use of the term "machine" dates from early designs that used an electrical generator operated by... | https://en.wikipedia.org/wiki/Blasting_machine |
A blasting mat is a mat usually made of sliced-up rubber tires bound together with ropes, cables or chains. They are used during rock blasting to contain the blast, prevent flying rocks and suppress dust.
Blasting mats are used when explosives are detonated in places such as quarries or construction sites. The mats ar... | https://en.wikipedia.org/wiki/Blasting_mat |
The Blastocrithidia nuclear code (translation table 31) is a genetic code used by the nuclear genome of the trypanosomatid genus Blastocrithidia . [ 1 ] This code, along with translation tables 27 and 28, is remarkable in that every one of the 64 possible codons can be a sense codon. [ 1 ]
Bases: adenine (A), cytosine... | https://en.wikipedia.org/wiki/Blastocrithidia_nuclear_code |
A blastoid is an embryoid , [ 1 ] a stem cell-based embryo model which, morphologically and transcriptionally resembles the early, pre-implantation, mammalian conceptus , called the blastocyst . The first blastoids were created by the Nicolas Rivron laboratory [ 2 ] [ 3 ] by combining mouse embryonic stem cells and mou... | https://en.wikipedia.org/wiki/Blastoid_(embryoid) |
In biology, a blastomere is a type of cell produced by cell division (cleavage) of the zygote after fertilization ; blastomeres are an essential part of blastula formation, and blastocyst formation in mammals . [ 1 ]
In humans, blastomere formation begins immediately following fertilization and continues through the f... | https://en.wikipedia.org/wiki/Blastomere |
Blastulation is the stage in early animal embryonic development that produces the blastula . In mammalian development, the blastula develops into the blastocyst with a differentiated inner cell mass and an outer trophectoderm . The blastula (from Greek βλαστός ( blastos meaning sprout )) is a hollow sphere of cells kno... | https://en.wikipedia.org/wiki/Blastulation |
Blau gas ( German : Blaugas ) is an artificial illuminating gas that is similar to propane . It was named after its inventor, Hermann Blau [ 1 ] [ 2 ] of Augsburg , Germany. Rarely used or produced today, it was manufactured by decomposing mineral oils in retorts by heat, and compressing the resulting naphtha until it ... | https://en.wikipedia.org/wiki/Blau_gas |
Blau space consists of the multidimensional coordinate system , created by considering the set of socio-demographic variables as dimensions. All socio-demographic characteristics are potential elements of Blau space, including continuous characteristics such as age, years of education, income, occupational prestige, g... | https://en.wikipedia.org/wiki/Blau_space |
Blavatnik Awards for Young Scientists was established in 2007 through a partnership between the Blavatnik Family Foundation, headed by Leonard Blavatnik (Russian: Леонид Валентинович Блаватник), chairman of Access Industries , and the New York Academy of Sciences , headed by president Nicholas Dirks .
These cash grant... | https://en.wikipedia.org/wiki/Blavatnik_Awards_for_Young_Scientists |
Bleach balloons , also known as bleach bombs , are water balloons filled with bleach as opposed to water.
In 2012, there were multiple incidents of balloons allegedly filled with bleach thrown at students between the months of June and September at the University of Texas . Four students filed reports with the UT poli... | https://en.wikipedia.org/wiki/Bleach_balloon |
Bleach is the generic name for any chemical product that is used industrially or domestically to remove color from (i.e. to whiten) fabric or fiber (in a process called bleaching) or to disinfect after cleaning. It often refers specifically to a dilute solution of sodium hypochlorite , also called "liquid bleach".
Man... | https://en.wikipedia.org/wiki/Bleaching_agent |
Bleaching of wood pulp is the chemical processing of wood pulp to lighten its color and whiten the pulp. The primary product of wood pulp is paper , for which whiteness (similar to, but distinct from brightness) is an important characteristic. [ 1 ] These processes and chemistry are also applicable to the bleaching of ... | https://en.wikipedia.org/wiki/Bleaching_of_wood_pulp |
Bleed air in aerospace engineering is compressed air taken from the compressor stage of a gas turbine , upstream of its fuel-burning sections. Automatic air supply and cabin pressure controller (ASCPC) valves bleed air from low or high stage engine compressor sections; low stage air is used during high power setting op... | https://en.wikipedia.org/wiki/Bleed_air |
A bleed screw is a device used to create a temporary opening in an otherwise closed hydraulic system, which facilitates the removal of air or another substance from the system by way of pressure and density differences. [ 1 ]
On a home radiator unit, the bleed screw can be opened, usually by means of a key, to allow u... | https://en.wikipedia.org/wiki/Bleed_screw |
Bleeding or flushing is shiny, black surface film of asphalt on the road surface caused by upward movement of asphalt in the pavement surface. [ 1 ] [ 2 ] [ 3 ] Common causes of bleeding are too much asphalt in asphalt concrete , hot weather, low space air void content and quality of asphalt. [ 4 ] Bleeding is a safety... | https://en.wikipedia.org/wiki/Bleeding_(roads) |
Bleeping Computer is a website covering technology news and offering free computer help via its forums that was created by Lawrence Abrams in 2004. [ 2 ] It publishes news focusing heavily on cybersecurity, but also covers other topics including computer software , computer hardware , operating system and general techn... | https://en.wikipedia.org/wiki/Bleeping_Computer |
Blend time , sometimes termed mixing time , is the time to achieve a predefined level of homogeneity of a tracer in a mixing vessel . Blend time is an important parameter to evaluate the mixing efficiency of mixing devices. [ 1 ] In order to make this definition valid, the tracer should be in the same physical phase (e... | https://en.wikipedia.org/wiki/Blend_time |
Blended artificial intelligence ( blended AI ) refers to the blending of different artificial intelligence techniques or approaches to achieve more robust and practical solutions. It involves integrating multiple AI models, algorithms , and technologies to leverage their respective strengths and compensate for their we... | https://en.wikipedia.org/wiki/Blended_artificial_intelligence |
A blended threat (also known as a blended attack [ 1 ] ) is a software exploit that involves a combination of attacks against different vulnerabilities . Blended threats can be any software that exploits techniques to attack and propagate threats, for example worms , trojan horses , and computer viruses .
Complex thre... | https://en.wikipedia.org/wiki/Blended_threat |
The Blepharisma nuclear code (translation table 15) is a genetic code found in the nuclei of Blepharisma . [ 1 ]
Bases: adenine (A), cytosine (C), guanine (G) and thymine (T) or uracil (U).
Amino acids: Alanine (Ala, A), Arginine (Arg, R), Asparagine (Asn, N), Aspartic acid (Asp, D), Cysteine (Cys, C), Glutamic acid ... | https://en.wikipedia.org/wiki/Blepharisma_nuclear_code |
Blichfeldt's theorem is a mathematical theorem in the geometry of numbers , stating that whenever a bounded set in the Euclidean plane has area A {\displaystyle A} , it can be translated so that it includes at least ⌈ A ⌉ {\displaystyle \lceil A\rceil } points of the integer lattice . [ 1 ] Equivalently, every bounded ... | https://en.wikipedia.org/wiki/Blichfeldt's_theorem |
Blight is a specific symptom affecting plants in response to infection by a pathogenic organism .
Blight is a rapid and complete chlorosis , browning, then death of plant tissues such as leaves, branches, twigs, or floral organs. [ 1 ] Accordingly, many diseases that primarily exhibit this symptom are called blights. ... | https://en.wikipedia.org/wiki/Blight |
A non-rigid airship , commonly called a blimp ( /blɪmp/ ), is an airship (dirigible) [ 1 ] without an internal structural framework or a keel. Unlike semi-rigid and rigid airships (e.g. Zeppelins ), blimps rely on the pressure of their lifting gas (usually helium , rather than flammable hydrogen ) and the strength of t... | https://en.wikipedia.org/wiki/Blimp |
Blinatumomab , sold under the brand name Blincyto , is a biopharmaceutical medication used for the treatment of Philadelphia chromosome -negative relapsed or refractory acute lymphoblastic leukemia . [ 8 ] It belongs to a class of constructed monoclonal antibodies , bi-specific T-cell engagers (BiTEs), that exert actio... | https://en.wikipedia.org/wiki/Blinatumomab |
A blind carbon copy (abbreviated Bcc ) is a message copy sent to an additional recipient, without the primary recipient being made aware. This concept originally applied to paper correspondence and now also applies to email . [ 1 ] "Bcc" can also stand for "blind courtesy copy" as a backronym of the original abbreviati... | https://en.wikipedia.org/wiki/Blind_carbon_copy |
In geometry , a Blind polytope is a convex polytope composed of regular polytope facets .
The category was named after the German couple Gerd and Roswitha Blind , who described them in a series of papers beginning in 1979. [ 1 ] It generalizes the set of semiregular polyhedra and Johnson solids to higher dimensions. [ ... | https://en.wikipedia.org/wiki/Blind_polytope |
Blind return-oriented programming ( BROP ) is an exploit technique which can successfully create an exploit even if the attacker does not possess the target binary. BROP attacks shown by Bittau et al. have defeated address space layout randomization (ASLR) and stack canaries on 64-bit systems.
With the current improve... | https://en.wikipedia.org/wiki/Blind_return-oriented_programming |
Blindsight is the ability of people who are cortically blind to respond to visual stimuli that they do not consciously see due to lesions in the primary visual cortex , also known as the striate cortex or Brodmann Area 17. [ 1 ] The term was coined by Lawrence Weiskrantz and his colleagues in a paper published in a 197... | https://en.wikipedia.org/wiki/Blindsight |
Bloch's principle is a philosophical principle in mathematics stated by André Bloch . [ 1 ]
Bloch states the principle in Latin as: Nihil est in infinito quod non prius fuerit in finito, and explains this as follows: Every proposition in whose statement the actual infinity occurs can be always considered a consequenc... | https://en.wikipedia.org/wiki/Bloch's_principle |
In condensed matter physics , Bloch's theorem states that solutions to the Schrödinger equation in a periodic potential can be expressed as plane waves modulated by periodic functions . The theorem is named after the Swiss physicist Felix Bloch , who discovered the theorem in 1929. [ 1 ] Mathematically, they are writte... | https://en.wikipedia.org/wiki/Bloch's_theorem |
In physics and chemistry, specifically in nuclear magnetic resonance (NMR), magnetic resonance imaging (MRI), and electron spin resonance (ESR), the Bloch equations are a set of macroscopic equations that are used to calculate the nuclear magnetization M = ( M x , M y , M z ) as a function of time when relaxation times... | https://en.wikipedia.org/wiki/Bloch_equations |
Bloch oscillation is a phenomenon from solid state physics . It describes the oscillation of a particle (e.g. an electron ) confined in a periodic potential when a constant force is acting on it.
It was first pointed out by Felix Bloch and Clarence Zener while studying the electrical properties of crystals. In particul... | https://en.wikipedia.org/wiki/Bloch_oscillation |
The Bloch spectrum is a concept in quantum mechanics in the field of theoretical physics ; this concept addresses certain energy spectrum considerations. Let H be the one-dimensional Schrödinger equation operator
where U α is a periodic function of period α . The Bloch spectrum [ 1 ] of H is defined as the set of val... | https://en.wikipedia.org/wiki/Bloch_spectrum |
For typical three-dimensional metals, the temperature-dependence of the electrical resistivity ρ(T) due to the scattering of electrons by acoustic phonons changes from a high-temperature regime in which ρ ∝ T to a low-temperature regime in which ρ ∝ T 5 at a characteristic temperature known as the Debye temperature . F... | https://en.wikipedia.org/wiki/Bloch–Grüneisen_temperature |
In mathematics , the norm residue isomorphism theorem is a long-sought result relating Milnor K -theory and Galois cohomology . The result has a relatively elementary formulation and at the same time represents the key juncture in the proofs of many seemingly unrelated theorems from abstract algebra, theory of quadrat... | https://en.wikipedia.org/wiki/Bloch–Kato_conjecture |
In statics , the block-stacking problem (sometimes known as The Leaning Tower of Lire ( Johnson 1955 ), also the book-stacking problem , or a number of other similar terms) is a puzzle concerning the stacking of blocks at the edge of a table.
The block-stacking problem is the following puzzle:
Place N {\displaystyle ... | https://en.wikipedia.org/wiki/Block-stacking_problem |
A block of the periodic table is a set of elements unified by the atomic orbitals their valence electrons or vacancies lie in. [ 1 ] The term seems to have been first used by Charles Janet . [ 2 ] Each block is named after its characteristic orbital: s-block , p-block , d-block , f-block and g-block .
The block names ... | https://en.wikipedia.org/wiki/Block_(periodic_table) |
A Block and bleed manifold is a hydraulic manifold that combines one or more block/isolate valves , usually ball valves , and one or more bleed/vent valves, usually ball or needle valves , into one component for interface with other components (pressure measurement transmitters, gauges , switches , etc.) of a hydraulic... | https://en.wikipedia.org/wiki/Block_and_bleed_manifold |
A block and tackle [ 1 ] [ 2 ] or only tackle [ 3 ] is a system of two or more pulleys with a rope or cable threaded between them, usually used to lift heavy loads.
The pulleys are assembled to form blocks and then blocks are paired so that one is fixed and one moves with the load. The rope is threaded through the pul... | https://en.wikipedia.org/wiki/Block_and_tackle |
Block floating point ( BFP ) is a method used to provide an arithmetic approaching floating point while using a fixed-point processor. BFP assigns a group of significands (the non-exponent part of the floating-point number) to a single exponent, rather than single significand being assigned its own exponent. BFP can be... | https://en.wikipedia.org/wiki/Block_floating_point |
In combinatorial mathematics , block walking is a method useful in thinking about sums of combinations graphically as "walks" on Pascal's triangle . As the name suggests, block walking problems involve counting the number of ways an individual can walk from one corner A of a city block to another corner B of another ci... | https://en.wikipedia.org/wiki/Block_walking |
Blocked isocyanates are organic compounds that have their isocyanate functionality chemically blocked to control reactivity. [ 1 ] They are the product of an isocyanate moiety (nearly always a di-isocyanate) and a suitable blocking agent. It may also be a polyurethane prepolymer that is NCO terminated but this function... | https://en.wikipedia.org/wiki/Blocked_isocyanates |
In computing , a process that is blocked is waiting for some event , such as a resource becoming available or the completion of an I/O operation . [ 1 ] Once the event occurs for which the process is waiting ("is blocked on"), the process is advanced from blocked state to an imminent one, such as runnable .
In a multi... | https://en.wikipedia.org/wiki/Blocking_(computing) |
Blocking ( dwang , nog, noggin, and nogging) is the use of short pieces of dimensional lumber in wood framed construction to brace longer members or to provide grounds for fixings.
The primary purpose of blocking is to brace longer frame members to help resist buckling under vertical compression. The intervals for th... | https://en.wikipedia.org/wiki/Blocking_(construction) |
A blocking antibody is an antibody that does not have a reaction when combined with an antigen , but prevents other antibodies from combining with that antigen. [ 1 ] This function of blocking antibodies has had a variety of clinical and experimental uses.
The term can also be used for inhibiting antibody , prozone ph... | https://en.wikipedia.org/wiki/Blocking_antibody |
In geometry , specifically projective geometry , a blocking set is a set of points in a projective plane that every line intersects and that does not contain an entire line. The concept can be generalized in several ways. Instead of talking about points and lines, one could deal with n -dimensional subspaces and m -dim... | https://en.wikipedia.org/wiki/Blocking_set |
Blondins (also known as Henderson Inclined Cableways [ 2 ] ) were a type of material ropeway ; they were named after the famous tightrope walker Charles Blondin . [ 3 ]
Blondins are a specialized type of material ropeway that incorporates a mechanism to raise and lower loads vertically from the suspended ropeway. This... | https://en.wikipedia.org/wiki/Blondin_(quarry_equipment) |
Blood alcohol content ( BAC ), also called blood alcohol concentration or blood alcohol level , is a measurement of alcohol intoxication used for legal or medical purposes. [ 1 ]
BAC is expressed as mass of alcohol per volume of blood. In US and many international publications, BAC levels are written as a percentage s... | https://en.wikipedia.org/wiki/Blood_alcohol_content |
Blood compatibility testing is conducted in a medical laboratory to identify potential incompatibilities between blood group systems in blood transfusion . It is also used to diagnose and prevent some complications of pregnancy that can occur when the baby has a different blood group from the mother. Blood compatibilit... | https://en.wikipedia.org/wiki/Blood_compatibility_testing |
Blood fractionation is the process of fractionating whole blood , or separating it into its component parts. This is typically done by centrifuging the blood .
The resulting components are:
Serum separation tubes (SSTs) are tubes used in phlebotomy containing a silicone gel; when centrifuged the silicone gel forms a... | https://en.wikipedia.org/wiki/Blood_fractionation |
Blood plasma fractionation are the general processes separating the various components of blood plasma , which in turn is a component of blood obtained through blood fractionation . Plasma-derived immunoglobulins are giving a new narrative to healthcare across a wide range of autoimmune inflammatory diseases.
Blood pl... | https://en.wikipedia.org/wiki/Blood_plasma_fractionation |
Blood shift has at least two separate meanings: | https://en.wikipedia.org/wiki/Blood_shift |
A blood smear , peripheral blood smear or blood film is a thin layer of blood smeared on a glass microscope slide and then stained in such a way as to allow the various blood cells to be examined microscopically. Blood smears are examined in the investigation of hematological (blood) disorders and are routinely employe... | https://en.wikipedia.org/wiki/Blood_smear |
A blood substitute (also called artificial blood or blood surrogate ) is a substance used to mimic and fulfill some functions of biological blood . It aims to provide an alternative to blood transfusion , which is transferring blood or blood-based products from one person into another. Thus far, there are no well-accep... | https://en.wikipedia.org/wiki/Blood_substitute |
A blood type (also known as a blood group ) is, based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells (RBCs). These antigens may be proteins , carbohydrates , glycoproteins , or glycolipids , depending on the blood group system. Some of these antigens are a... | https://en.wikipedia.org/wiki/Blood_type |
Blood urea nitrogen ( BUN ) is a medical test that measures the amount of urea nitrogen found in blood. The liver produces urea in the urea cycle as a waste product of the digestion of protein . Normal human adult blood should contain 7 to 18 mg/dL (0.388 to 1 mmol/L) of urea nitrogen. [ 1 ] Individual laboratories ma... | https://en.wikipedia.org/wiki/Blood_urea_nitrogen |
Hemorheology , also spelled haemorheology ( haemo from Greek ‘αἷμα, haima ' blood '; and rheology , from Greek ῥέω rhéō , ' flow ' and -λoγία, -logia 'study of'), or blood rheology , is the study of flow properties of blood and its elements of plasma and cells . Proper tissue perfusion can occur only when blood's rheol... | https://en.wikipedia.org/wiki/Blood_viscoelasticity |
In polymer chemistry , materials science , and food science , bloom refers to the migration of one component of a solid mixture to the surface of an article. The process is an example of phase separation or phase aggregation.
Blooming is commonly encountered in polymer additives such as stabilizers . [ 1 ] Many polym... | https://en.wikipedia.org/wiki/Bloom_(phase) |
Bloom filters are space-efficient probabilistic data structures used to test whether an element is a part of a set. Bloom filters require much less space than other data structures for representing sets, however the downside of Bloom filters is that there is a false positive rate when querying the data structure. Since... | https://en.wikipedia.org/wiki/Bloom_filters_in_bioinformatics |
A bloomery is a type of metallurgical furnace once used widely for smelting iron from its oxides . The bloomery was the earliest form of smelter capable of smelting iron. Bloomeries produce a porous mass of iron and slag called a bloom . The mix of slag and iron in the bloom, termed sponge iron , is usually consolid... | https://en.wikipedia.org/wiki/Bloomery |
In botany , blossoms are the flowers of stone fruit trees (genus Prunus ) and of some other plants with a similar appearance that flower profusely for a period of time in spring .
Colloquially, flowers of orange are referred to as such as well. Peach blossoms (including nectarine), most cherry blossoms , and some almo... | https://en.wikipedia.org/wiki/Blossom |
In molecular biology and genetics , a blot is a method of transferring large biomolecules ( proteins , DNA or RNA ) onto a carrier, such as a membrane composed of nitrocellulose , polyvinylidene fluoride or nylon . In many instances, this is done after a gel electrophoresis , transferring the molecules from the gel ont... | https://en.wikipedia.org/wiki/Blot_(biology) |
A blotting matrix , in molecular biology and genetics , is the substrate onto which macromolecules , such as proteins , are transferred in a blot method. [ 1 ] The matrices are generally chemically modified paper filters or microporous membrane filters. In a dot blot , macromolecules are applied directly to the matrix.... | https://en.wikipedia.org/wiki/Blotting_matrix |
In biology , BLOTTO is a blocking reagent made from nonfat dry milk , phosphate buffered saline , and sodium azide . Its name is an almost-acronym of bovine lacto transfer technique optimizer. It constitutes an inexpensive source of nonspecific protein (milk casein ) which blocks protein binding sites in a variety of e... | https://en.wikipedia.org/wiki/Blotto_(biology) |
A blowback (also blow back or blow-back ) is a failure of a steam locomotive , which can be catastrophic.
One type of blowback is caused when atmospheric air blows down the locomotive's chimney, causing the flow of hot gases through the boiler tubes to be reversed, with the fire itself being blown through the firehole... | https://en.wikipedia.org/wiki/Blowback_(steam_engine) |
A blowdown stack is an elevated vent or vertical stack that is used to vent the pressure of components of a chemical, refinery or other plant if there is a process problem or emergency. A blowdown stack can be used to complement a flare stack or as an alternative. The purpose is to prevent 'loss of containment' of vol... | https://en.wikipedia.org/wiki/Blowdown_stack |
A blowing agent is a substance which is capable of producing a cellular structure via a foaming process in a variety of materials that undergo hardening or phase transition , such as polymers , plastics , and metals . [ 1 ] They are typically applied when the blown material is in a liquid stage . The cellular structure... | https://en.wikipedia.org/wiki/Blowing_agent |
A blown oil is a drying oil which has been modified through an oxidative process.
Oils are "blown" through partial oxidation of the oil at elevated temperatures. A typical blowing process involves heating the oil to 70 to 120 °C (158 to 248 °F) and passing air through the liquid. [ 1 ] The modification causes the form... | https://en.wikipedia.org/wiki/Blown_oil |
A blowout preventer ( BOP ) (pronounced B-O-P) [ 1 ] is a specialized valve or similar mechanical device, used to seal, control and monitor oil and gas wells to prevent blowouts , the uncontrolled release of crude oil or natural gas from a well. They are usually installed in stacks of other valves.
The earliest blowo... | https://en.wikipedia.org/wiki/Blowout_preventer |
Blue-listed species are species that belong to the Blue List and includes any indigenous species or subspecies ( taxa ) considered to be vulnerable in their locale in order to provide early warning to federal and regional governments . Vulnerable taxa are of special concern because of characteristics that make them par... | https://en.wikipedia.org/wiki/Blue-listed |
BlueBorne is a type of security vulnerability with Bluetooth implementations in Android , iOS , Linux and Windows . [ 1 ] [ 2 ] [ 3 ] It affects many electronic devices such as laptops , smart cars , smartphones and wearable gadgets . One example is CVE - 2017-14315 . The vulnerabilities were first reported by Armis, ... | https://en.wikipedia.org/wiki/BlueBorne_(security_vulnerability) |
BlueHat (or Blue Hat or Blue-Hat ) is a term used to refer to outside computer security consulting firms that are employed to bug test a system prior to its launch, looking for exploits so they can be closed. Their role involves searching for weaknesses or security gaps that could be exploited, and their aim is to rect... | https://en.wikipedia.org/wiki/BlueHat |
Oracle BlueKai Data Management Platform , formerly known as BlueKai , is a cloud-based data management platform which is a part of Oracle Marketing that enables the personalization of online, offline , and mobile marketing campaigns . [ 1 ]
BlueKai was created in 2008 by Omar Tawakol, Alexander Hooshmand, and Grant Ri... | https://en.wikipedia.org/wiki/BlueKai |
BlueLine Grid is a company that provides a mobile communication and mass notification platform built for interagency communication between civil service employees and private sector security teams. BlueLine Grid was created by Bill Bratton , the 42nd Commissioner of the NYPD (under 109th Mayor Bill de Blasio ), formerl... | https://en.wikipedia.org/wiki/BlueLine_Grid |
Vivo BlueOS, or BlueOS also named Blue River OS , is a open-source distributed operating system developed by Vivo . The OS is designed to support large models and multi-modal functions in variety of inputs it supports. [ 1 ]
BlueOS also supports the BlueXlink connection protocol, which adopts a distributed design conc... | https://en.wikipedia.org/wiki/BlueOS |
Blue is a scheduling discipline for the network scheduler developed by graduate student Wu-chang Feng for Professor Kang G. Shin at the University of Michigan and others at the Thomas J. Watson Research Center of IBM in 1999. [ 1 ]
Like random early detection (RED), Blue operates by randomly dropping or marking packet... | https://en.wikipedia.org/wiki/Blue_(queue_management_algorithm) |
Blue Obelisk is an informal group of chemists who promote open data , open source , and open standards ; it was initiated by Peter Murray-Rust and others in 2005. [ 1 ] [ 2 ] [ 3 ] Multiple open source cheminformatics projects associate themselves with the Blue Obelisk, among which, in alphabetical order, Avogadro , Bi... | https://en.wikipedia.org/wiki/Blue_Obelisk |
A Blue Ribbon Commission on America's Nuclear Future was appointed by US President Barack Obama to look into future options for existing and future nuclear waste , following the ending of work on the incomplete Yucca Mountain Repository . In 2012, there were 70 nuclear power plant sites where 65,000 short tons (59,000 ... | https://en.wikipedia.org/wiki/Blue_Ribbon_Commission_on_America's_Nuclear_Future |
Blue billy is a chemical or mineral [ i ] deposit often encountered in contaminated land . [ 1 ]
The name is a reference to its distinctive bright blue colour, which can make it immediately obvious in other mud or soil. Chemically it is a form of Prussian blue . Although several chemical industry processes could produ... | https://en.wikipedia.org/wiki/Blue_billy |
The blue bottle experiment is a color-changing redox chemical reaction . An aqueous solution containing glucose , sodium hydroxide , methylene blue is prepared in a closed bottle containing some air. Upon standing, it spontaneously turns from blue to colorless due to reduction of methylene blue by the alkaline glucose ... | https://en.wikipedia.org/wiki/Blue_bottle_experiment |
Blue carbon is a concept within climate change mitigation that refers to "biologically driven carbon fluxes and storage in marine systems that are amenable to management". [ 2 ] : 2220 Most commonly, it refers to the role that tidal marshes , mangroves and seagrass meadows can play in carbon sequestration . [ 2 ] : 222... | https://en.wikipedia.org/wiki/Blue_carbon |
A blue colour works ( German : Blaufarbenwerke ) is a paintworks where blue pigment for use in glassmaking is produced. Usually the pigment , cobalt blue , needed for this purpose, was manufactured from cobalt-containing ore as in the case of the factories listed below.
This metalworking article is a stub . You can he... | https://en.wikipedia.org/wiki/Blue_colour_works |
A blue flower ( German : Blaue Blume ) was a central symbol of inspiration for the Romanticism movement, and remains an enduring motif in Western art today. [ 1 ] It stands for desire , love , and the metaphysical striving for the infinite and unreachable. It symbolizes hope and the beauty of things.
German author Nov... | https://en.wikipedia.org/wiki/Blue_flower |
Blue foods, also known as aquatic foods, are plants and animals sourced from aquatic environments and are suitable for human consumption. [ 1 ] More than 2500 species of marine and freshwater animals, aquatic plants, and algae have been identified as relevant to the human diet. [ 2 ]
The term was coined in the Blue Tr... | https://en.wikipedia.org/wiki/Blue_food |
In aviation, blue ice is frozen sewage material that has leaked mid-flight from commercial aircraft lavatory waste systems. It is a mixture of human biowaste and liquid disinfectant that freezes at high altitude . The name comes from the blue color of the disinfectant. Airlines are not allowed to dump their waste tanks... | https://en.wikipedia.org/wiki/Blue_ice_(aviation) |
A blue roof is a roof of a building that is designed explicitly to provide initial temporary water storage and then gradual release of stored water, typically rainfall. Blue roofs are constructed on flat or low sloped roofs in urban communities where flooding is a risk due to a lack of permeable surfaces for water to i... | https://en.wikipedia.org/wiki/Blue_roof |
The blue screen of death ( BSoD ) – or blue screen error , blue screen , fatal error , bugcheck , and officially known as a stop error [ 1 ] [ 2 ] [ 3 ] – is a critical error screen displayed by the Microsoft Windows operating systems to indicate a system crash , in which the operating system reaches a critical condit... | https://en.wikipedia.org/wiki/Blue_screen_of_death |
A blue team is a group of individuals who perform an analysis of information systems to ensure security, identify security flaws, verify the effectiveness of each security measure, and make certain all security measures will continue to be effective after implementation. [ 1 ]
Some blue team objectives include:
As pa... | https://en.wikipedia.org/wiki/Blue_team_(computer_security) |
The symbol of a bluebird as the harbinger of happiness is found in many cultures and may date back thousands of years.
One of the oldest examples of a blue bird in myth (found on oracle bone inscriptions of the Shang dynasty , 1766–1122 BC) is from pre-modern China, where a blue or green bird ( qingniao ) was the mess... | https://en.wikipedia.org/wiki/Bluebird_of_happiness |
Bluetooth Low Energy ( Bluetooth LE , colloquially BLE , formerly marketed as Bluetooth Smart [ 1 ] ) is a wireless personal area network technology designed and marketed by the Bluetooth Special Interest Group (Bluetooth SIG) [ 2 ] aimed at novel applications in the healthcare, fitness , beacons , [ 3 ] security, and ... | https://en.wikipedia.org/wiki/Bluetooth_Low_Energy |
The blue–white screen is a screening technique that allows for the rapid and convenient detection of recombinant bacteria in vector -based molecular cloning experiments. This method of screening is usually performed using a suitable bacterial strain , but other organisms such as yeast may also be used. DNA of transfor... | https://en.wikipedia.org/wiki/Blue–white_screen |
Bluing , sometimes spelled as blueing , is a passivation process in which steel is partially protected against rust using a black oxide coating. It is named after the blue-black appearance of the resulting protective finish. Bluing involves an electrochemical conversion coating resulting from an oxidizing chemical reac... | https://en.wikipedia.org/wiki/Bluing_(steel) |
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