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Burt's solar compass or astronomical compass/sun compass is a surveying instrument that makes use of the Sun's direction instead of magnetism. William Austin Burt invented his solar compass in 1835. The solar compass works on the principle that the direction to the Sun at a specified time can be calculated if the posit... | https://en.wikipedia.org/wiki/Burt's_solar_compass |
The Burton process is a thermal cracking process invented by William Merriam Burton and Robert E. Humphreys , both of whom held a PhD in chemistry from Johns Hopkins University. The process they developed is commonly referred to as the Burton process. However, it should be recognized as the Burton-Humphreys process, as... | https://en.wikipedia.org/wiki/Burton_process |
SCS is an acronym for " Sistema Cablaggio Semplificato " ("Simplified Cable Solution"). It uses a fieldbus network protocol and has applications in the field of home automation and building automation . It is used mainly in bTicino and Legrand installations.
An SCS bus is based on a sheathed twisted pair formed of two... | https://en.wikipedia.org/wiki/Bus_SCS |
A bus bulb , also called a bus boarder , bus border , bumpout , bus cape , [ 1 ] or a kerb outstand is an arrangement by which a sidewalk or pavement is extended outwards for a bus stop ; typically the bus bulb replaces roadway that would otherwise be part of a parking lane. With bus bulbs or boarders, a bus can stay i... | https://en.wikipedia.org/wiki/Bus_bulb |
In computing , a bus error is a fault raised by hardware, notifying an operating system (OS) that a process is trying to access memory that the CPU cannot physically address: an invalid address for the address bus , hence the name. In modern use on most architectures these are much rarer than segmentation faults , whic... | https://en.wikipedia.org/wiki/Bus_error |
The bus factor (aka lottery factor , [ 1 ] [ 2 ] truck factor , [ 3 ] or circus factor [ 4 ] ) is a measurement of the risk resulting from information and capabilities not being shared among team members, derived from the phrase "in case they get hit by a bus".
The concept is similar to the much older idea of key pers... | https://en.wikipedia.org/wiki/Bus_factor |
In mathematics , a Busemann G -space is a type of metric space first described by Herbert Busemann in 1942.
If ( X , d ) {\displaystyle (X,d)} is a metric space such that
then X is said to be a Busemann G - space . Every Busemann G -space is a homogeneous space .
The Busemann conjecture states that every Busemann G... | https://en.wikipedia.org/wiki/Busemann_G-space |
In geometric topology , Busemann functions are used to study the large-scale geometry of geodesics in Hadamard spaces and in particular Hadamard manifolds ( simply connected complete Riemannian manifolds of nonpositive curvature). They are named after Herbert Busemann , who introduced them; he gave an extensive treatme... | https://en.wikipedia.org/wiki/Busemann_function |
In the mathematical field of convex geometry , the Busemann–Petty problem , introduced by Herbert Busemann and Clinton Myers Petty ( 1956 , problem 1), asks whether it is true that a symmetric convex body with larger central hyperplane sections has larger volume. More precisely, if K , T are symmetric convex bodies in ... | https://en.wikipedia.org/wiki/Busemann–Petty_problem |
Bush regeneration , a form of natural area restoration , is the term used in Australia for the ecological restoration of remnant vegetation areas, such as through the minimisation of negative disturbances, both exogenous such as exotic weeds and endogenous such as erosion . It may also attempt to recreate conditions of... | https://en.wikipedia.org/wiki/Bush_regeneration |
A bushing or rubber bushing is a type of vibration isolator . It provides an interface between two parts, damping the energy transmitted through the bushing. A common application is in vehicle suspension systems, where a bushing made of rubber (or, more often, synthetic rubber or polyurethane [ 1 ] ) separates the face... | https://en.wikipedia.org/wiki/Bushing_(isolator) |
The Business Information System ( BIS ; Finnish : Yritys- ja yhteisötietojärjestelmä , YTJ ) is a Finnish government service jointly maintained by the Finnish Patent and Registration Office [ fi ] (PRH) and the Finnish Tax Administration providing an access to the Finnish Trade Register and the Finnish Register of Foun... | https://en.wikipedia.org/wiki/Business_Information_System_(government_service) |
The Business Process Framework is an operating model framework for telecom service providers in the telecommunications industry. [ 1 ] The model describes the required business processes of service providers and defines key elements and how they should interact.
The Business Process Framework (eTOM) is a standard main... | https://en.wikipedia.org/wiki/Business_Process_Framework_(eTOM) |
The Business Roundtable ( BRT ) is a nonprofit lobbyist association based in Washington, D.C. whose members are chief executive officers of major U.S. companies. [ 1 ] Unlike the United States Chamber of Commerce , whose members are entire businesses, BRT members are exclusively CEOs. The BRT lobbies for public policy ... | https://en.wikipedia.org/wiki/Business_Roundtable |
Business activity monitoring ( BAM ) is a category of software intended for use in monitoring and tracking business activities.
BAM is a term introduced by Gartner, Inc. , referring to the collection, analysis, and presentation of real-time information about activities within organizations , including those involving ... | https://en.wikipedia.org/wiki/Business_activity_monitoring |
A business analyst ( BA ) is a person who processes, interprets and documents business processes , products, services and software through analysis of data . [ 1 ] [ 2 ] [ 3 ] [ 4 ] The role of a business analyst is to ensure business efficiency increases through their knowledge of both IT and business function . [ 5 ]... | https://en.wikipedia.org/wiki/Business_analyst |
Business informatics ( BI ) is a discipline combining economics , the economics of digitization , business administration , accounting , internal auditing , information technology (IT), and concepts of computer science . Business informatics centers around creating programming and equipment frameworks which ultimately ... | https://en.wikipedia.org/wiki/Business_informatics |
A business object is an entity within a multi-tiered software application that works in conjunction with the data access and business logic layers to transport data. [ citation needed ]
Business objects separate state from behaviour because they are communicated across the tiers in a multi-tiered system, while the rea... | https://en.wikipedia.org/wiki/Business_object |
Business process automation ( BPA ), also known as business automation , refers to the technology-enabled automation of business processes . [ 1 ]
BPA toolsets vary in capability, but due to the fast adoption of artificial intelligence, there is a trend towards the use of artificial intelligence technologies that can ... | https://en.wikipedia.org/wiki/Business_process_automation |
Business support systems ( BSS ) are the components that a telecommunications service provider (or telco ) uses to run its business operations towards customers.
Together with operations support systems (OSS), they are used to support various end-to-end telecommunication services (e.g., telephone services). [ 1 ] BSS ... | https://en.wikipedia.org/wiki/Business_support_system |
The bronze bust of John Dalton located along the corridor on the first floor of Burlington House , London , was created by Ruby Levick [ 1 ] [ 2 ] [ 3 ] (who also executed the bust of Humphry Davy at Burlington House) and donated to the Chemical Society in 1903 by its former president Sir Thomas Edward Thorpe (1845–192... | https://en.wikipedia.org/wiki/Bust_of_John_Dalton |
Busulfan ( Myleran , GlaxoSmithKline , Busulfex IV , Otsuka America Pharmaceutical, Inc. ) is a chemotherapy drug in use since 1959. It is a cell cycle non-specific alkylating antineoplastic agent , in the class of alkyl sulfonates . Its chemical designation is 1,4-butanediol dimethanesulfonate.
Busulfan was approved ... | https://en.wikipedia.org/wiki/Busulfan |
In telecommunications , busy-hour call attempts ( BHCA ) is a teletraffic engineering measurement used to evaluate and plan capacity for telephone networks . [ 1 ] BHCA is the number of telephone calls attempted at the sliding 60-minute period during which occurs the maximum total traffic load in a given 24-hour period... | https://en.wikipedia.org/wiki/Busy-hour_call_attempts |
In computer science and software engineering , busy-waiting , busy-looping or spinning is a technique in which a process repeatedly checks to see if a condition is true, such as whether keyboard input or a lock is available. Spinning can also be used to generate an arbitrary time delay, a technique that was necessary o... | https://en.wikipedia.org/wiki/Busy_waiting |
In chemical nomenclature , the IUPAC nomenclature of organic chemistry is a method of naming organic chemical compounds as recommended [ 1 ] [ 2 ] by the International Union of Pure and Applied Chemistry (IUPAC). It is published in the Nomenclature of Organic Chemistry (informally called the Blue Book ). [ 3 ] Ideally,... | https://en.wikipedia.org/wiki/But- |
General
CH 2 =CH-CH=CH 2
Phase behavior
? bar
43.2 bar
Structure
Gas properties
Liquid properties
Safety
More info
SI units were used where possible. Unless otherwise stated, standard conditions were used.
Disclaimer and references | https://en.wikipedia.org/wiki/Butadiene_(data_page) |
This page provides supplementary chemical data on n -butane .
The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet ( MSDS ) for this chemical from a reliable source such as eChemPortal , and follow its directions.
n -Butane : Table data... | https://en.wikipedia.org/wiki/Butane_(data_page) |
2,3- Butanediol fermentation is anaerobic fermentation of glucose with 2,3-butanediol as one of the end products. The overall stoichiometry of the reaction is
Butanediol fermentation is typical for the facultative anaerobes Klebsiella and Enterobacter [ 1 ] and is tested for using the Voges–Proskauer (VP) test. There ... | https://en.wikipedia.org/wiki/Butanediol_fermentation |
Butanol (also called butyl alcohol ) is a four-carbon alcohol with a formula of C 4 H 9 OH , which occurs in five isomeric structures (four structural isomers), from a straight-chain primary alcohol to a branched-chain tertiary alcohol; [ 1 ] all are a butyl or isobutyl group linked to a hydroxyl group (sometimes repre... | https://en.wikipedia.org/wiki/Butanol |
This page provides supplementary chemical data on butanone .
The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet ( MSDS ) for this chemical from a reliable source and follow its directions.
Table data obtained from CRC Handbook of Chem... | https://en.wikipedia.org/wiki/Butanone_(data_page) |
In mathematics , the Butcher group , named after the New Zealand mathematician John C. Butcher by Hairer & Wanner (1974) , is an infinite-dimensional Lie group [ 1 ] first introduced in numerical analysis to study solutions of non-linear ordinary differential equations by the Runge–Kutta method . It arose from an alge... | https://en.wikipedia.org/wiki/Butcher_group |
Butler in a Box was an early voice-controlled home automation device developed in 1983 by magician Gus Searcy and programmer Franz Kavan. [ 1 ] [ 2 ] The device allowed users to control various home electronics, such as lights and phones, using voice commands. It predated modern smart speakers and virtual assistants by... | https://en.wikipedia.org/wiki/Butler_in_a_Box |
A Butler matrix is a beamforming network used to feed a phased array of antenna elements . Its purpose is to control the direction of a beam, or beams, of radio transmission . It consists of an n × n {\displaystyle n\times n} matrix ( n {\displaystyle n} some power of two) with hybrid couplers and fixed-value phase shi... | https://en.wikipedia.org/wiki/Butler_matrix |
In electrochemistry , the Butler–Volmer equation (named after John Alfred Valentine Butler [ 1 ] and Max Volmer ), also known as Erdey-Grúz –Volmer equation, is one of the most fundamental relationships in electrochemical kinetics . It describes how the electrical current through an electrode depends on the voltage dif... | https://en.wikipedia.org/wiki/Butler–Volmer_equation |
Butopamine ( INN Tooltip International Nonproprietary Name , USAN Tooltip United States Adopted Name ; developmental code name LY-131126 ; also known as ( R , R )-ractopamine ) is a sympathomimetic agent , β-adrenergic receptor agonist , and positive inotrope of the phenethylamine family which was studied for treatment... | https://en.wikipedia.org/wiki/Butopamine |
A butter stamp or butter print [ 1 ] is a device for stamping or shaping a design onto a block of warm butter . [ 2 ]
Butter stamps were sometimes commercial but usually purely decorative and applied in homes. [ 3 ] They were typically made of wood and feature simple designs of cows, flowers or geometric patterns and,... | https://en.wikipedia.org/wiki/Butter_stamp |
The buttered toast phenomenon is an observation that buttered toast tends to land butter-side down after it falls. It is used as an idiom representing pessimistic outlooks. [ 1 ] Various people have attempted to determine whether there is an actual tendency for bread to fall in this fashion, with varying results.
Writ... | https://en.wikipedia.org/wiki/Buttered_toast_phenomenon |
In the area of metal cluster chemistry, a butterfly cluster compound usually describes tetrametallic clusters containing five M-M bonds. A prototype of this motif is [Re 4 (CO) 16 ] 2− . Most butterfly clusters have additional bridging ligands . One example is the penta phosphide [[Rh 4 (CO) 5 (PPh 2 ) 5 ]] − where a... | https://en.wikipedia.org/wiki/Butterfly_cluster_compound |
The butterfly curve is a transcendental plane curve discovered by Temple H. Fay of University of Southern Mississippi in 1989. [ 1 ]
The curve is given by the following parametric equations : [ 2 ]
or by the following polar equation :
The sin term has been added for purely aesthetic reasons, to make the butterfly ap... | https://en.wikipedia.org/wiki/Butterfly_curve_(transcendental) |
A butterfly net (sometimes called an aerial insect net ) is one of several kinds of nets used to collect insects. The entire bag of the net is generally constructed from a lightweight mesh to minimize damage to delicate butterfly wings. Other types of nets used in insect collecting include beat nets , aquatic nets, an... | https://en.wikipedia.org/wiki/Butterfly_net |
A butterfly roof (sometimes called a V roof ) is a form of roof characterised by an inversion of a standard roof form, with two roof surfaces sloping down from opposing edges to a valley near the middle of the roof. [ 1 ] It is so called because its shape resembles a butterfly 's wings. [ 2 ]
The modern butterfly roof... | https://en.wikipedia.org/wiki/Butterfly_roof |
The butterfly theorem is a classical result in Euclidean geometry , which can be stated as follows: [ 1 ] : p. 78
Let M be the midpoint of a chord PQ of a circle , through which two other chords AB and CD are drawn; AD and BC intersect chord PQ at X and Y correspondingly. Then M is the midpoint of XY .
A formal proof... | https://en.wikipedia.org/wiki/Butterfly_theorem |
A Butterworth cover (also Butterworth hatch and Butterworth plate ) is a hatch on the deck of a cargo vessel that is used to seal a small opening that admits to the space below. [ 1 ] [ 2 ]
In oil tankers and other marine vessels used for transporting fluid products, there are small service openings though the deck in... | https://en.wikipedia.org/wiki/Butterworth_cover |
Buttressed core is a structural system for high buildings, consisting of a hexagonal core reinforced by three buttresses that form a Y shape.
The buttressed core supports itself both laterally and torsionally. It also eliminates the need for column transfers, and moves loads in a smooth path from the building's top in... | https://en.wikipedia.org/wiki/Buttressed_core |
Butyrate fermentation is a process that produces butyric acid via anaerobic bacteria. This process occurs commonly in clostridia which can be isolated from many anaerobic environments such as mud, fermented foods , and intestinal tracts or feces. [ 1 ] Clostridium can ferment carbohydrates into butyric acid, producing ... | https://en.wikipedia.org/wiki/Butyrate_fermentation |
Butyric acid ( / ˈ b j uː t ɪ r ɪ k / ; from Ancient Greek : βούτῡρον , meaning "butter"), also known under the systematic name butanoic acid , is a straight-chain alkyl carboxylic acid with the chemical formula CH 3 CH 2 CH 2 COOH . It is an oily, colorless liquid with an unpleasant odor. Isobutyric acid (2-methylprop... | https://en.wikipedia.org/wiki/Butyric_acid |
Butyrometer is a measuring instrument used to measure fat content in milk or milk products in general. The method used in the determination is Gerber's method as invented by Swiss chemist Niklaus Gerber .
This standards - or measurement -related article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Butyrometer |
Butyryl phosphate is an intermediate in the fermentation of butyric acid . The glutamate oxidation of butyryl phosphate may provide the main source of energy for Clostridium tetanomorphum . [ 1 ]
This biochemistry article is a stub . You can help Wikipedia by expanding it .
This article about an ester is a stub . You... | https://en.wikipedia.org/wiki/Butyryl_phosphate |
As part of consumer behavior , the buying decision process is the decision-making process used by consumers regarding the market transactions before, during, and after the purchase of a good or service . It can be seen as a particular form of a cost–benefit analysis in the presence of multiple alternatives. [ 1 ] [ 2 ]... | https://en.wikipedia.org/wiki/Buyer_decision_process |
Buzi are small forts built along the northern frontier of China. [ 2 ] They are prevalent in the Loess Plateau of Shaanxi , Gansu and Ningxia provinces, usually square or oval (as hill forts) and built out of rammed earth walls.
The forts are built on hilltops, at strategic locations or within villages. They were main... | https://en.wikipedia.org/wiki/Buzi_(fortification) |
Function Maize gene for first step in biosynthesis of benzoxazin , which aids in resistance to insect pests, pathogenic fungi and bacteria.
First report Hamilton 1964, [ 1 ] as a mutant sensitive to the herbicide atrazine , and lacking benzoxazinoids (less than 1% of non-mutant plants).
Molecular characterization rev... | https://en.wikipedia.org/wiki/Bx1_benzoxazin1 |
The language of mathematics has a wide vocabulary of specialist and technical terms. It also has a certain amount of jargon : commonly used phrases which are part of the culture of mathematics, rather than of the subject. Jargon often appears in lectures, and sometimes in print, as informal shorthand for rigorous argum... | https://en.wikipedia.org/wiki/By_inspection |
In rheology , Byerlee's law , also known as Byerlee's friction law [ 1 ] concerns the shear stress (τ) required to slide one rock over another. The rocks have macroscopically flat surfaces, but the surfaces have small asperities that make them "rough." For a given experiment and at normal stresses (σ n ) below about 20... | https://en.wikipedia.org/wiki/Byerlee's_law |
The bypass ratio ( BPR ) of a turbofan engine is the ratio between the mass flow rate of the bypass stream to the mass flow rate entering the core. [ 1 ] A 10:1 bypass ratio, for example, means that 10 kg of air passes through the bypass duct for every 1 kg of air passing through the core.
Turbofan engines are usually... | https://en.wikipedia.org/wiki/Bypass_ratio |
A bypass transition is a laminar–turbulent transition in a fluid flow over a surface. It occurs when a laminar boundary layer transitions to a turbulent one through some secondary instability mode, bypassing some of the pre-transitional events that typically occur in a natural laminar–turbulent transition. [ a ]
The b... | https://en.wikipedia.org/wiki/Bypass_transition |
The radiation-induced bystander effect ( bystander effect ) is the phenomenon in which unirradiated cells exhibit irradiated effects as a result of signals received from nearby irradiated cells. In November 1992, Hatsumi Nagasawa and John B. Little first reported this radiobiological phenomenon. [ 1 ]
There is evidenc... | https://en.wikipedia.org/wiki/Bystander_effect_(radiobiology) |
The byte is a unit of digital information that most commonly consists of eight bits . Historically, the byte was the number of bits used to encode a single character of text in a computer [ 1 ] [ 2 ] and for this reason it is the smallest addressable unit of memory in many computer architectures . To disambiguate arbit... | https://en.wikipedia.org/wiki/Byte |
Byte-pair encoding [ 1 ] [ 2 ] (also known as BPE , or digram coding ) [ 3 ] is an algorithm, first described in 1994 by Philip Gage, for encoding strings of text into smaller strings by creating and using a translation table. [ 4 ] A slightly modified version of the algorithm is used in large language model tokenizers... | https://en.wikipedia.org/wiki/Byte-pair_encoding |
The Byte Sieve is a computer-based implementation of the Sieve of Eratosthenes published by Byte as a programming language performance benchmark . It first appeared in the September 1981 edition of the magazine and was revisited on occasion. Although intended to compare the performance of different languages on the sam... | https://en.wikipedia.org/wiki/Byte_Sieve |
In the 9th century, during the Arab–Byzantine wars , the Byzantine Empire used a semaphore system of beacons to transmit messages from the border with the Abbasid Caliphate across Asia Minor to the Byzantine capital, Constantinople .
According to Byzantine sources ( Constantine Porphyrogenitus , Theophanes Continuatus... | https://en.wikipedia.org/wiki/Byzantine_beacon_system |
Benzoyl peroxide is a chemical compound (specifically, an organic peroxide ) with structural formula (C 6 H 5 −C(=O)O−) 2 , often abbreviated as (BzO) 2 . In terms of its structure, the molecule can be described as two benzoyl ( C 6 H 5 −C(=O)− , Bz) groups connected by a peroxide ( −O−O− ). It is a white granular s... | https://en.wikipedia.org/wiki/Bz2O2 |
The Béchamp reduction (or Béchamp process ) is a chemical reaction that converts aromatic nitro compounds to their corresponding anilines using iron as the reductant: [ 1 ]
This reaction was once a major route to aniline, but catalytic hydrogenation is the preferred method. [ 2 ]
The reaction was first used by Antoin... | https://en.wikipedia.org/wiki/Béchamp_reduction |
A Bézier curve ( / ˈ b ɛ z . i . eɪ / BEH -zee-ay , [ 1 ] French pronunciation: [bezje] ) is a parametric curve used in computer graphics and related fields. [ 2 ] A set of discrete "control points" defines a smooth, continuous curve by means of a formula. Usually the curve is intended to approximate a real-world shape... | https://en.wikipedia.org/wiki/Bézier_curve |
In mathematics , Bézout's identity (also called Bézout's lemma ), named after Étienne Bézout who proved it for polynomials, is the following theorem :
Bézout's identity — Let a and b be integers with greatest common divisor d . Then there exist integers x and y such that ax + by = d . Moreover, the integers of the for... | https://en.wikipedia.org/wiki/Bézout's_identity |
In mathematics , a Bézout matrix (or Bézoutian or Bezoutiant ) is a special square matrix associated with two polynomials , introduced by James Joseph Sylvester in 1853 and Arthur Cayley in 1857 and named after Étienne Bézout . [ 1 ] [ 2 ] Bézoutian may also refer to the determinant of this matrix, which is equal to th... | https://en.wikipedia.org/wiki/Bézout_matrix |
Bílinská kyselka (in English : Biliner , Bílina acidulous water ) is strongly mineralized alkaline bicarbonate (i.e. 5 to 7 grams per litre) mineral water from the Czech town of Bílina . Particularly sodium , potassium , calcium , magnesium , and iron are present as cations, as are anions of chloride , sulfate , and bi... | https://en.wikipedia.org/wiki/Bílinská_kyselka |
The Bôcher Memorial Prize was founded by the American Mathematical Society in 1923 in memory of Maxime Bôcher with an initial endowment of $1,450 (contributed by members of that society). It is awarded every three years (formerly every five years) for a notable research work in analysis that has appeared during the pa... | https://en.wikipedia.org/wiki/Bôcher_Memorial_Prize |
Böttcher's equation , named after Lucjan Böttcher , is the functional equation
where
The logarithm of this functional equation amounts to Schröder's equation .
Solution of functional equation is a function in implicit form .
Lucian Emil Böttcher sketched a proof in 1904 on the existence of solution: an analytic fun... | https://en.wikipedia.org/wiki/Böttcher's_equation |
Børge Christian Jessen (19 June 1907 – 20 March 1993) was a Danish mathematician best known for his work in analysis , specifically on the Riemann zeta function , and in geometry , specifically on Hilbert's third problem .
Jessen was born on 19 June 1907 in Copenhagen to Hans Jessen and Christine Jessen (née Larsen). ... | https://en.wikipedia.org/wiki/Børge_Jessen |
In number theory , Büchi's problem , also known as the n squares' problem , is an open problem named after the Swiss mathematician Julius Richard Büchi . It asks whether there is a positive integer M such that every sequence of M or more integer squares, whose second difference is constant and equal to 2, is necessaril... | https://en.wikipedia.org/wiki/Büchi's_problem |
Büchi arithmetic of base k is the first-order theory of the natural numbers with addition and the function V k ( x ) {\displaystyle V_{k}(x)} which is defined as the largest power of k dividing x , named in honor of the Swiss mathematician Julius Richard Büchi . The signature of Büchi arithmetic contains only the addit... | https://en.wikipedia.org/wiki/Büchi_arithmetic |
In formal language theory , the Büchi–Elgot–Trakhtenbrot theorem states that a language is regular if and only if it can be defined in monadic second-order logic (MSO): for every MSO formula, we can find a finite-state automaton defining the same language, and for every finite-state automaton, we can find an MSO formul... | https://en.wikipedia.org/wiki/Büchi–Elgot–Trakhtenbrot_theorem |
A Büchner flask , also known as a vacuum flask , [ 1 ] filter flask, suction flask, side-arm flask, or Bunsen flask , is a thick-walled Erlenmeyer flask with a short glass tube and hose barb protruding about 1-2 cm from its neck.
The short tube and hose barb effectively act as an adapter over which the end of a thick-... | https://en.wikipedia.org/wiki/Büchner_flask |
The Buchner–Curtius–Schlotterbeck reaction is the reaction of aldehydes or ketones with aliphatic diazoalkanes to form homologated ketones . [ 1 ] It was first described by Eduard Buchner and Theodor Curtius in 1885 [ 2 ] and later by Fritz Schlotterbeck in 1907. [ 3 ] Two German chemists also preceded Schlotterbeck in... | https://en.wikipedia.org/wiki/Büchner–Curtius–Schlotterbeck_reaction |
The Bürgi–Dunitz angle (BD angle) is one of two angles that fully define the geometry of "attack" (approach via collision) of a nucleophile on a trigonal unsaturated center in a molecule , originally the carbonyl center in an organic ketone , but now extending to aldehyde , ester , and amide carbonyls, and to alkenes (... | https://en.wikipedia.org/wiki/Bürgi–Dunitz_angle |
Bījapallava (or Bījapallavaṃ ) is a commentary in Sanskrit of Bhaskara II 's Bījagaṇita composed by the 16th-17th century astrologer-mathematician Kṛṣṇa Daivajña . This work is also known by several other names: Kalpālatāvatāra , Bījānkura and Nāvāakura . A manuscript of the work, copied in 1601, has survived to the pr... | https://en.wikipedia.org/wiki/Bījapallava |
Slightly soluble in: methanol , ethanol , glycerol , ethylene glycol , formamide ;
insoluble in: acetone , toluene , heptane , diethyl ether , dichloromethane
Pentaerythritol is an organic compound with the formula C(CH 2 OH) 4 . The molecular structure can be described as a neopentane with one hydrogen atom in each ... | https://en.wikipedia.org/wiki/C(CH2OH)4 |
Neopentane , also called 2,2-dimethylpropane , is a double-branched-chain alkane with five carbon atoms. Neopentane is a flammable gas at room temperature and pressure which can condense into a highly volatile liquid on a cold day, in an ice bath, or when compressed to a higher pressure.
Neopentane is the simplest al... | https://en.wikipedia.org/wiki/C(CH3)4 |
Guanidine nitrate is the chemical compound with the formula [C(NH 2 ) 3 ]NO 3 . It is a colorless, water-soluble salt. It is produced on a large scale and finds use as precursor for nitroguanidine , [ 1 ] fuel in pyrotechnics and gas generators . Its correct name is guanidinium nitrate , but the colloquial term gua... | https://en.wikipedia.org/wiki/C(NH2)3NO3 |
The C4 CBRN Protective Mask is the current issued gas mask of the Canadian Armed Forces . The C4 is a negative-pressure, full-face respirator with an ergonomic butyl rubber face piece. With its stretch-fabric mesh head harness and two simple adjustment pull straps, the C4 respirator is easily donned and doffed.
The C-... | https://en.wikipedia.org/wiki/C-4_Protective_Mask |
C-Bus is a communications protocol based on a seven-layer OSI model for home and building automation that can handle cable lengths up to 1000 metres using Cat-5 cable. It is used in Australia, New Zealand, Asia , the Middle East , Russia, United States, South Africa , the UK and, other parts of Europe including Greece... | https://en.wikipedia.org/wiki/C-Bus_(protocol) |
C-ImmSim started, in 1995, as the C-language "version" of IMMSIM , the IMMune system SIMulator, a program written back in 1991 in APL-2 (APL2 is a Registered Trademark of IBM Corp.) by the astrophysicist Phil E. Seiden together with the immunologist Franco Celada to implement the Celada-Seiden model . The porting was m... | https://en.wikipedia.org/wiki/C-ImmSim |
C-K design theory or concept-knowledge theory is both a design theory and a theory of reasoning in design. It defines design reasoning as a logic of expansion processes, i.e. a logic that organizes the generation of unknown objects. The theory builds on several traditions of design theory, including systematic design, ... | https://en.wikipedia.org/wiki/C-K_theory |
C-Modem [ 1 ] is a protocol driver developed by Lavio Pareschi ( Rio de Janeiro ) in 1989 that functions similarly to ZMODEM . [ citation needed ]
C-Modem has a crash recovery feature. If a transmission is interrupted, the partially received file is saved with the extension .BAD . Upon reconnection, the transmission r... | https://en.wikipedia.org/wiki/C-MODEM |
The C-Thru Ruler Company is an American maker of measuring devices and specialized products for drafting, designing and drawing. The company was formed in 1939 in Bloomfield, Connecticut , [ 1 ] by Jennie R. Zachs, a schoolteacher, who saw the need for transparent measuring tools such as rulers , triangles , curves and... | https://en.wikipedia.org/wiki/C-Thru_Ruler |
In model theory , a branch of mathematical logic , a C-minimal theory is a theory that is "minimal" with respect to a ternary relation C with certain properties. Algebraically closed fields with a (Krull) valuation are perhaps the most important example.
This notion was defined in analogy to the o-minimal theories , ... | https://en.wikipedia.org/wiki/C-minimal_theory |
C-myc mRNA is a type of mRNA that serves as a template for the MYC protein which is implicated in the rapid growth of cancer cells . This mRNA is a topic of ongoing research to investigate the viability of preventing cancer growth by cleaving or degrading the c-myc mRNA. [ 1 ] | https://en.wikipedia.org/wiki/C-myc_mRNA |
The term c-number (classical number) is an old nomenclature introduced by Paul Dirac which refers to real and complex numbers. It is used to distinguish from operators ( q-numbers or quantum numbers) in quantum mechanics .
Although c-numbers are commuting, the term anti-commuting c-number is also used to refer to a t... | https://en.wikipedia.org/wiki/C-number |
1B09 , 1GNH , 1LJ7 , 3L2Y , 3PVN , 3PVO
1401
12944
ENSG00000132693
ENSMUSG00000037942
P02741
P14847
NM_000567 NM_001329057 NM_001329058 NM_001382703
NM_007768
NP_000558 NP_001315986 NP_001315987 NP_001369632
NP_031794
C-reactive protein ( CRP ) is an annular (ring-shaped) pentameric protein found in blood pl... | https://en.wikipedia.org/wiki/C-reactive_protein |
In physics , charge conjugation is a transformation that switches all particles with their corresponding antiparticles , thus changing the sign of all charges : not only electric charge but also the charges relevant to other forces. The term C-symmetry is an abbreviation of the phrase "charge conjugation symmetry", an... | https://en.wikipedia.org/wiki/C-symmetry |
The C-terminal telopeptide ( CTX ), also known as carboxy-terminal collagen crosslinks , is the C-terminal telopeptide of fibrillar collagens such as collagen type I and type II . It is used as a biomarker in the serum to measure the rate of bone turnover . It can be useful in assisting clinicians to determine a patien... | https://en.wikipedia.org/wiki/C-terminal_telopeptide |
C-value is the amount, in picograms , of DNA contained within a haploid nucleus (e.g. a gamete ) or one half the amount in a diploid somatic cell of a eukaryotic organism. In some cases (notably among diploid organisms), the terms C-value and genome size are used interchangeably; however, in polyploids the C-value may ... | https://en.wikipedia.org/wiki/C-value_enigma |
C. Glenn Begley is a hematologist and oncologist who was the CEO of BioCurate, an Australia -based joint venture between the University of Melbourne and Monash University that was launched in 2016. [ 1 ] Previously, he worked at the California-based biotech company Akriveia Therapeutics as their chief scientific office... | https://en.wikipedia.org/wiki/C._Glenn_Begley |
The C.mmp was an early multiple instruction, multiple data ( MIMD ) multiprocessor system developed at Carnegie Mellon University (CMU) by William Wulf (1971). The notation C.mmp came from the PMS notation of Gordon Bell and Allen Newell , [ 1 ] where a central processing unit (CPU) was designated as C , a variant was ... | https://en.wikipedia.org/wiki/C.mmp |
Indolicidin is an antimicrobial peptide isolated from neutrophil blood cells of cows. The mature peptide is just 13 amino acids, making it one of the smallest antimicrobial peptides known to be encoded as the primary product of the encoding antimicrobial peptide gene. [ 1 ] Indolicidin is active against bacterial patho... | https://en.wikipedia.org/wiki/C100H132N26O13 |
Dolichol refers to any of a group of long-chain mostly unsaturated organic compounds that are made up of varying numbers of isoprene units terminating in an α-saturated isoprenoid group, containing an alcohol functional group.
Dolichols play a role in the post-translational modification of proteins known as N -glycosy... | https://en.wikipedia.org/wiki/C100H164O |
The following is a list of straight-chain alkanes , the total number of isomers of each (including branched chains), and their common names, sorted by number of carbon atoms. [ 1 ] [ 2 ] | https://en.wikipedia.org/wiki/C100H202 |
Ramoplanin ( INN ) is a glycolipodepsipeptide antibiotic drug derived from strain ATCC 33076 of Actinoplanes . [ 1 ] It is effective against Gram-positive bacteria. [ 2 ]
Its development has been fast-tracked by the U.S. Food and Drug Administration as a treatment for multiple antibiotic-resistant Clostridioides diffi... | https://en.wikipedia.org/wiki/C106H170ClN21O30 |
Chlordecone , better known in the United States under the brand name Kepone , is an organochlorine compound and a colourless solid. It is an obsolete insecticide , now prohibited in the western world, but only after many thousands of tonnes had been produced and used. [ 3 ] Chlordecone is a known persistent organic pol... | https://en.wikipedia.org/wiki/C10Cl10O |
Perfluorodecalin ( C 10 F 18 ) is a fluorocarbon , a derivative of decalin in which all of the hydrogen atoms are replaced by fluorine atoms. It is chemically and biologically inert and stable up to 400 °C. Several applications make use of its ability to dissolve gases.
It is manufactured by the fluorination of tetral... | https://en.wikipedia.org/wiki/C10F18 |
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