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Machine guarding is a safety feature on or around manufacturing or other engineering equipment consisting of a shield or device covering hazardous areas of a machine to prevent contact with body parts or to control hazards like chips or sparks from exiting the machine. Machine guarding provides a means to protect hum... | https://en.wikipedia.org/wiki/Machine_guarding |
The term Machine Guidance is used to describe a wide range of techniques which improve the productivity of agricultural, mining and construction equipment. It is most commonly used to describe systems which incorporate GPS , Motion Measuring Units (MMU) and other devices to provide on-board systems with information abo... | https://en.wikipedia.org/wiki/Machine_guidance |
The machine industry or machinery industry is a subsector of the industry , that produces and maintains machines for consumers, the industry, and most other companies in the economy.
This machine industry traditionally belongs to the heavy industry . Nowadays, many smaller industrial manufacturing companies in this br... | https://en.wikipedia.org/wiki/Machine_industry |
In lean manufacturing , machine operator efficiency ( MOE ) is the performance of an employee who operates industrial machinery. [ 1 ] The operator's efficiency is measured as the time spent producing product divided by the time the operator is on duty. [ 2 ] For example: if an operator is assigned to run a CNC machine... | https://en.wikipedia.org/wiki/Machine_operator_efficiency |
Machine perception is the capability of a computer system to interpret data in a manner that is similar to the way humans use their senses to relate to the world around them. [ 1 ] [ 2 ] [ 3 ] The basic method that the computers take in and respond to their environment is through the attached hardware . Until recently... | https://en.wikipedia.org/wiki/Machine_perception |
Machine perfusion (MP) is an artificial perfusion technique often used for organ preservation to help facilitate organ transplantation . MP works by continuously pumping a specialized solution through donor organs , mimicking the body's natural blood flow while actively controlling temperature , oxygen levels , chemica... | https://en.wikipedia.org/wiki/Machine_perfusion |
A machine shop or engineering workshop is a room, building, or company where machining , a form of subtractive manufacturing, is done. In a machine shop, machinists use machine tools and cutting tools to make parts, usually of metal or plastic (but sometimes of other materials such as glass or wood ). A machine shop ca... | https://en.wikipedia.org/wiki/Machine_shop |
A machine tool is a machine for handling or machining metal or other rigid materials, usually by cutting, boring , grinding , shearing, or other forms of deformations. Machine tools employ some sort of tool that does the cutting or shaping. All machine tools have some means of constraining the workpiece and provide a... | https://en.wikipedia.org/wiki/Machine_tool |
Machinery's Handbook for machine shop and drafting-room; a reference book on machine design and shop practice for the mechanical engineer, draftsman, toolmaker, and machinist (the full title of the 1st edition) is a classic reference work in mechanical engineering and practical workshop mechanics in one volume publishe... | https://en.wikipedia.org/wiki/Machinery's_Handbook |
A machinist calculator is a hand-held calculator programmed with built-in formulas making it easy and quick for machinists to establish speeds, feeds and time without guesswork or conversion charts. Formulas may include revolutions per minute (RPM), surface feet per minute (SFM), inches per minute (IPM), feed per tooth... | https://en.wikipedia.org/wiki/Machinist_calculator |
A Machmeter is an aircraft pitot-static system flight instrument that
shows the ratio of the true airspeed to the speed of sound ,
a dimensionless quantity called Mach number . This is shown on a Machmeter as a decimal fraction .
An aircraft flying at the speed of sound is flying
at a Mach number of one, expressed as... | https://en.wikipedia.org/wiki/Machmeter |
Maciej S. Kumosa is a materials scientist and academic. He holds the title of John Evans Professor at the University of Denver , and is the director of the Center for Novel High Voltage/Temperature Materials and Structures (HVT). [ 1 ]
Kumosa's research interests involve analyzing advanced materials at multiple scales... | https://en.wikipedia.org/wiki/Maciej_Kumosa |
The Mackey–Arens theorem is an important theorem in functional analysis that characterizes those locally convex vector topologies that have some given space of linear functionals as their continuous dual space .
According to Narici (2011), this profound result is central to duality theory ; a theory that is "the centr... | https://en.wikipedia.org/wiki/Mackey–Arens_theorem |
In mathematics , Maclaurin's inequality , named after Colin Maclaurin , is a refinement of the inequality of arithmetic and geometric means .
Let a 1 , a 2 , … , a n {\displaystyle a_{1},a_{2},\ldots ,a_{n}} be non-negative real numbers , and for k = 1 , 2 , … , n {\displaystyle k=1,2,\ldots ,n} , define the averages ... | https://en.wikipedia.org/wiki/Maclaurin's_inequality |
A Maclaurin spheroid is an oblate spheroid which arises when a self-gravitating fluid body of uniform density rotates with a constant angular velocity. This spheroid is named after the Scottish mathematician Colin Maclaurin , who formulated it for the shape of Earth in 1742. [ 1 ] In fact the figure of the Earth is far... | https://en.wikipedia.org/wiki/Maclaurin_spheroid |
Macle is a term used in crystallography . [ 1 ] It is a crystalline form, twin-crystal or double crystal (such as chiastolite ). It is crystallographic twin according to the spinel twin law and is seen in octahedral crystals or minerals such as diamond and spinel. The twin law name comes from the fact that is commonly ... | https://en.wikipedia.org/wiki/Macle |
A Macquarium is an aquarium made from, or made to sit within, the shell of an Apple Macintosh computer. The term was coined by computer writer Andy Ihnatko as a joke at the outdated Macintosh 512K ; [ 1 ] Macquariums have since been built both by Ihnatko himself and by others.
Ihnatko originally designed his Macquariu... | https://en.wikipedia.org/wiki/Macquarium |
Macro-creatine kinase (macro-CK) is a macroenzyme, an enzyme of high molecular weight and prolonged half-life found in human serum . [ 1 ] It is one of the most common macroenzymes. [ 1 ] Macro-CK type 1 is a complex formed by one of the creatine kinase isoenzyme types, typically CK-BB, and antibodies ; typically IgG ,... | https://en.wikipedia.org/wiki/Macro-creatine_kinase |
In engineering , macro-engineering (alternatively known as mega engineering ) is the implementation of large-scale design projects. It can be seen as a branch of civil engineering or structural engineering applied on a large landmass . In particular, macro-engineering is the process of marshaling and managing of resour... | https://en.wikipedia.org/wiki/Macro-engineering |
A macro key is a keyboard key that can be configured to perform custom, user -defined behavior. Many keyboards do not have a macro key, but some have one or more. Some consider a macro key to enhance productivity by allowing them to do operations via a single key press that otherwise requires slower or multiple UI acti... | https://en.wikipedia.org/wiki/Macro_key |
Macrobenthos consists of the organisms that live at the bottom of a water column [ 1 ] and are visible to the naked eye. [ 2 ] In some classification schemes, these organisms are larger than 1 mm; [ 1 ] in another, the smallest dimension must be at least 0.5 mm. [ 3 ] They include polychaete worms , pelecypods , anthoz... | https://en.wikipedia.org/wiki/Macrobenthos |
The macroblock is a processing unit in image and video compression formats based on linear block transforms, typically the discrete cosine transform (DCT). A macroblock typically consists of 16×16 samples, and is further subdivided into transform blocks, and may be further subdivided into prediction blocks. Formats whi... | https://en.wikipedia.org/wiki/Macroblock |
A macrocell or macrosite is a cell in a mobile phone network that provides radio coverage served by a high power cell site (tower, antenna or mast). Generally, macrocells provide coverage larger than microcell . The antennas for macrocells are mounted on ground-based masts, rooftops and other existing structures, at a... | https://en.wikipedia.org/wiki/Macrocell |
Macrocycles are often described as molecules and ions containing a ring of twelve or more atoms. [ 2 ] Classical examples include the crown ethers , calixarenes , porphyrins , and cyclodextrins . Macrocycles describe a large, mature area of chemistry. [ 3 ]
Macrocycle : Cyclic macromolecule or a macromolecular cyclic ... | https://en.wikipedia.org/wiki/Macrocyclic_stereocontrol |
Macroevolution comprises the evolutionary processes and patterns which occur at and above the species level. [ 1 ] [ 2 ] [ 3 ] In contrast, microevolution is evolution occurring within the population(s) of a single species. In other words, microevolution is the scale of evolution that is limited to intraspecific (withi... | https://en.wikipedia.org/wiki/Macroevolution |
Macroflora is a term used for all the plants occurring in a particular area that are large enough to be seen with the naked eye. [ 1 ] It is usually synonymous with the Flora and can be contrasted with the microflora , a term used for all the bacteria and other microorganisms in an ecosystem .
Macroflora is also an in... | https://en.wikipedia.org/wiki/Macroflora |
Guatemala is one of the richest biodiversity hotspots in the world. [ 1 ] This is due to the variety of its territory and ecosystems that occur from sea level up to more than 4,000 meters above sea level. Ecological niches include (but are not limited to) subtropical and tropical rain forests , wetlands , dry forests ,... | https://en.wikipedia.org/wiki/Macrofungi_of_Guatemala |
A macrograph or photomacrograph is an image taken at a scale that is visible to the naked eye , as opposed to a micrographic image, taken with a microscope . It is sometimes defined more precisely as an image at a scale of less than ten times magnification . [ 1 ]
This term is often applied to a three-dimensional imag... | https://en.wikipedia.org/wiki/Macrograph |
Macroinvertebrate Community Index (MCI) is an index used in New Zealand to measure the water quality of fresh water streams. [ 1 ] The presence or lack of macroinvertebrates such as insects, worms and snails in a river or stream can give a biological indicator on the health of that waterway. [ 2 ] The MCI assigns a num... | https://en.wikipedia.org/wiki/Macroinvertebrate_Community_Index |
Macromolecular Bioscience is a monthly peer-reviewed scientific journal covering polymer science . [ 1 ] It publishes Reviews, Feature Articles, Communications, and Full Papers at the intersection of polymer and materials sciences with life science and medicine . The editorial office is in Weinheim , Germany. The edito... | https://en.wikipedia.org/wiki/Macromolecular_Bioscience |
Macromolecular Chemistry and Physics is a biweekly peer-reviewed scientific journal covering polymer science . It publishes full papers, talents, trends, and highlights in all areas of polymer science , from chemistry to physical chemistry , physics , and materials science .
Macromolecular Chemistry and Physics was es... | https://en.wikipedia.org/wiki/Macromolecular_Chemistry_and_Physics |
The Macromolecular Crystallographic Information File ( mmCIF ) also known as PDBx/mmCIF is a standard text file format for representing macromolecular structure data, developed by the International Union of Crystallography (IUCr) and the Protein Data Bank [ 1 ] It is an extension of the Crystallographic Information Fil... | https://en.wikipedia.org/wiki/Macromolecular_Crystallographic_Information_File |
Macromolecular Materials and Engineering is a monthly peer-reviewed scientific journal covering polymer science . [ 1 ] It publishes Reviews, Feature Articles, Communications, and Full Papers on design, modification, characterization, and processing of advanced polymeric materials. Published topics include materials re... | https://en.wikipedia.org/wiki/Macromolecular_Materials_and_Engineering |
Macromolecular Rapid Communications is a biweekly peer-reviewed scientific journal covering polymer science . It publishes Communications, Feature Articles and Reviews on general polymer science , from chemistry and physics of polymers to polymers in materials science and life sciences . [ 1 ]
The journal was founded ... | https://en.wikipedia.org/wiki/Macromolecular_Rapid_Communications |
Macromolecular Reaction Engineering is a peer-reviewed scientific journal published monthly by Wiley-VCH . The journal covers academic and industrial research in the field of polymer reaction engineering, which includes polymer science . It emerged from a section that was part of Macromolecular Materials and Engineerin... | https://en.wikipedia.org/wiki/Macromolecular_Reaction_Engineering |
Macromolecular Theory and Simulations is a peer-reviewed scientific journal covering polymer science . It publishes Reviews, Feature Articles, Communications, and Full Papers on all aspects from macromolecular theory to advanced computer simulation. According to the Journal Citation Reports , the journal has a 2020 imp... | https://en.wikipedia.org/wiki/Macromolecular_Theory_and_Simulations |
In molecular biology , the term macromolecular assembly ( MA ) refers to massive chemical structures such as viruses and non-biologic nanoparticles , cellular organelles and membranes and ribosomes , etc. that are complex mixtures of polypeptide , polynucleotide , polysaccharide or other polymeric macromolecules . The... | https://en.wikipedia.org/wiki/Macromolecular_assembly |
In host–guest chemistry , macromolecular cages are a type of macromolecule structurally consisting of a three-dimensional chamber surrounded by a molecular framework. Macromolecular cages can be considered large-sized organic molecular cages . Macromolecular cage architectures come in various sizes ranging from 1-50 nm... | https://en.wikipedia.org/wiki/Macromolecular_cages |
The phenomenon of macromolecular crowding alters the properties of molecules in a solution when high concentrations of macromolecules such as proteins are present. [ 2 ] Such conditions occur routinely in living cells ; for instance, the cytosol of Escherichia coli contains about 300–400 mg / ml of macromolecules. [ 3 ... | https://en.wikipedia.org/wiki/Macromolecular_crowding |
Macromolecular docking is the computational modelling of the quaternary structure of complexes formed by two or more interacting biological macromolecules . Protein –protein complexes are the most commonly attempted targets of such modelling, followed by protein– nucleic acid complexes. [ 1 ]
The ultimate goal of dock... | https://en.wikipedia.org/wiki/Macromolecular_docking |
A macromolecule is a very large molecule important to biological processes , such as a protein or nucleic acid . It is composed of thousands of covalently bonded atoms . Many macromolecules are polymers of smaller molecules called monomers . The most common macromolecules in biochemistry are biopolymers ( nucleic acids... | https://en.wikipedia.org/wiki/Macromolecule |
Macromolecules is a peer-reviewed scientific journal that has been published since 1968 by the American Chemical Society . Initially published bimonthly, it became monthly in 1983 and then, in 1990, biweekly. [ 1 ] Macromolecules is abstracted and indexed in Scopus , EBSCOhost , PubMed , Web of Science , and SwetsWise.... | https://en.wikipedia.org/wiki/Macromolecules_(journal) |
Macromomycin B is an antibiotic with anticancer activity. [ 1 ]
This organic chemistry article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Macromomycin_B |
Macromonomer molecule : A macromolecule that has one end-group which enables it to act as a monomer molecule, contributing only a single monomeric unit to a chain of the final macromolecule. [ 1 ]
In polymer chemistry , a macromonomer (or macromer ) is a macromolecule with one end-group that enables it to act as a rea... | https://en.wikipedia.org/wiki/Macromonomer |
In physics , macrons are microscopic (dust-sized) particles, accelerated to high speeds. The term was first used in the late 1960s, when it was believed that macrons could be accelerated cheaply in small particle accelerators as a way of achieving low-cost fusion power . [ 1 ]
This nuclear chemistry –related article i... | https://en.wikipedia.org/wiki/Macron_(physics) |
Macrophages ( / ˈ m æ k r oʊ f eɪ dʒ / ; abbreviated M φ , MΦ or MP ) are a type of white blood cell of the innate immune system that engulf and digest pathogens, such as cancer cells , microbes , cellular debris and foreign substances, which do not have proteins that are specific to healthy body cells on their surface... | https://en.wikipedia.org/wiki/Macrophage |
Macrophage-activating lipopeptide 2 (MALP-2) is a lipopeptide Toll-like receptor (TLR)-2 and 6 agonist . It is used in immunological research to simulate Mycoplasma bacterial infections and activate immune cells . MALP-2 holds promise as a novel vaccine adjuvant due to its activation of TLRs. [ 1 ] [ 2 ] It also promot... | https://en.wikipedia.org/wiki/Macrophage-activating_lipopeptide_2 |
The terms "macrophage" and "microphage" are used in ecology to describe heterotrophs that consume food in two different ways. Both macrophages and microphages "ingest solid food and may process it through some sort of alimentary canal ." [ 1 ] However, a macrophage "handles food items singly, while a microphage handles... | https://en.wikipedia.org/wiki/Macrophage_(ecology) |
Macrophagic myofasciitis ( MMF ) is a histopathological finding involving inflammatory microphage formations with aluminium-containing crystal inclusions and associated microscopic muscle necrosis in biopsy samples of the deltoid muscle . Based on the presence of aluminium and the common practice of administering vacci... | https://en.wikipedia.org/wiki/Macrophagic_myofasciitis |
In soil, macropores are defined as cavities that are larger than 75 μm. [ 1 ] Functionally, pores of this size host preferential soil solution flow and rapid transport of solutes and colloids . Macropores increase the hydraulic conductivity of soil, allowing water to infiltrate and drain quickly, and shallow groundwate... | https://en.wikipedia.org/wiki/Macropore |
Macroprolactin is the term used to describe complexed forms of the pituitary hormone prolactin which are found in blood. The most common complex found in blood consists of prolactin and immunoglobulin G (IgG). [ 1 ] While the free prolactin hormone is active, prolactin in the macroprolactin complex does not have any bi... | https://en.wikipedia.org/wiki/Macroprolactin |
In genetics , macrosatellites are the largest of the tandem repeats within DNA . Each macrosatellite repeat typically is several thousand base pairs in length, and the entire repeat array often spans hundreds of kilobases. [ 1 ] Reduced number of repeats on chromosome 4 (D4Z4 repeats) causes euchromatization of local D... | https://en.wikipedia.org/wiki/Macrosatellite |
Macroscopic quantum phenomena are processes showing quantum behavior at the macroscopic scale , rather than at the atomic scale where quantum effects are prevalent. The best-known examples of macroscopic quantum phenomena are superfluidity and superconductivity ; other examples include the quantum Hall effect , Josephs... | https://en.wikipedia.org/wiki/Macroscopic_quantum_phenomena |
In quantum mechanics , macroscopic quantum self-trapping is when two Bose–Einstein condensates weakly linked by an energy barrier which particles can tunnel through , nevertheless end up with a higher average number of bosons on one side of the junction than the other. The junction of two Bose–Einstein condensates is m... | https://en.wikipedia.org/wiki/Macroscopic_quantum_self-trapping |
A macroscopic quantum state is a state of matter in which macroscopic properties, such as mechanical motion , [ 1 ] thermal conductivity , electrical conductivity [ 2 ] and viscosity , can be described only by quantum mechanics rather than merely classical mechanics . [ 3 ] This occurs primarily at low temperatures whe... | https://en.wikipedia.org/wiki/Macroscopic_quantum_state |
The macroscopic scale is the length scale on which objects or phenomena are large enough to be visible with the naked eye , without magnifying optical instruments . [ 1 ] [ 2 ] It is the opposite of microscopic .
When applied to physical phenomena and bodies, the macroscopic scale describes things as a person can dire... | https://en.wikipedia.org/wiki/Macroscopic_scale |
The mad scientist (also mad doctor or mad professor ) is a stock character of a scientist who is perceived as "mad, bad and dangerous to know" [ 1 ] or " insane " owing to a combination of unusual or unsettling personality traits and the unabashedly ambitious, taboo or hubristic nature of their experiments. As a motif ... | https://en.wikipedia.org/wiki/Mad_scientist |
Madapollam / ˌ m æ d ə ˈ p ɒ l ə m / is a soft cotton fabric manufactured from fine yarns with a dense pick laid out in linen weave . Madapollam is used as an embroidery and handkerchief fabric and as a base for fabric printing . [ 1 ] [ 2 ] The equal warp and weft mean that the tensile strength and shrinkage is the sa... | https://en.wikipedia.org/wiki/Madapollam |
The Madelung constant is used in determining the electrostatic potential of a single ion in a crystal by approximating the ions by point charges . It is named after Erwin Madelung , a German physicist. [ 1 ]
Because the anions and cations in an ionic solid attract each other by virtue of their opposing charges, separa... | https://en.wikipedia.org/wiki/Madelung_constant |
In theoretical physics , the Madelung equations , or the equations of quantum hydrodynamics , are Erwin Madelung 's alternative formulation of the Schrödinger equation for a spinless non relativistic particle, written in terms of hydrodynamical variables, similar to the Navier–Stokes equations of fluid dynamics . [ 1 ]... | https://en.wikipedia.org/wiki/Madelung_equations |
In organic chemistry , Madelung synthesis is a chemical reaction that produces (substituted or unsubstituted) indoles by the intramolecular cyclization of N -phenylamides using strong base at high temperature. The Madelung synthesis was reported in 1912 by Walter Madelung, when he observed that 2-phenylindole was synth... | https://en.wikipedia.org/wiki/Madelung_synthesis |
Madhava's correction term is a mathematical expression attributed to Madhava of Sangamagrama (c. 1340 – c. 1425), the founder of the Kerala school of astronomy and mathematics , that can be used to give a better approximation to the value of the mathematical constant π ( pi ) than the partial sum approximation obtained... | https://en.wikipedia.org/wiki/Madhava's_correction_term |
Madhava's sine table is the table of trigonometric sines constructed by the 14th century Kerala mathematician - astronomer Madhava of Sangamagrama (c. 1340 – c. 1425). The table lists the jya-s or Rsines of the twenty-four angles from 3.75 ° to 90° in steps of 3.75° (1/24 of a right angle , 90°). Rsine is just the sine... | https://en.wikipedia.org/wiki/Madhava's_sine_table |
The Madukkarai Wall is a historic border fortification demarcating the boundaries of the three ancient kingdoms of Chera , Chola , and Pandya . The wall was supposedly erected by the goddess Sellandiyamman and may have been built as early as the 1st century AD.
The Madukkarai wall [ note 1 ] is a stone and earthen for... | https://en.wikipedia.org/wiki/Madukkarai_Wall |
The mafia hypothesis posits that brood parasite eggs are accepted by the host out of fear of retaliation (nest destruction) from the brood parasite, in an example of coevolution .
Amotz Zahavi proposed it in 1979, and it was tested by Manuel Soler in 1995. [ 1 ]
Maria Abou Chakra, of the Max Planck Institute for Evol... | https://en.wikipedia.org/wiki/Mafia_hypothesis |
Mageba (stylised as mageba ) is a civil engineering service provider [ 1 ] and manufacturer of bridge bearings, expansion joints, seismic protection and structural monitoring devices for the construction industry. [ 2 ] The company is headquartered in Bulach, Switzerland, and operates through offices in Europe, America... | https://en.wikipedia.org/wiki/Mageba_(Swiss_company) |
The Magellanic Cloud Emission Line Survey ( MCELS ) is a joint project of Cerro Tololo Inter-American Observatory ( Chile ) and the University of Michigan using the CTIO Curtis/Schmidt Telescope. The main goal of the project is to trace the ionized gas in the Magellanic Clouds using narrow-band filters ([S II], Hα and ... | https://en.wikipedia.org/wiki/Magellanic_Cloud_Emission-line_Survey |
The Magellanic Premium , also known as the Magellanic Gold Medal and Magellanic Prize is awarded for major contributions in the field of navigation (whether by sea, air, or in space), astronomy, or natural philosophy.
The Premium was established in 1786 through a grant by Jean-Hyacinthe Magellan ( Portuguese : João Ja... | https://en.wikipedia.org/wiki/Magellanic_Premium |
The magic angle is a precisely defined angle, the value of which is approximately 54.7356°. The magic angle is a root of a second-order Legendre polynomial , P 2 (cos θ ) = 0 , and so any interaction which depends on this second-order Legendre polynomial vanishes at the magic angle. This property makes the magic angle... | https://en.wikipedia.org/wiki/Magic_angle |
The magic angle is a particular value of the collection angle of an electron microscope at which the measured energy-loss spectrum "magically" becomes independent of the tilt angle of the sample with respect to the beam direction. The magic angle is not uniquely defined for isotropic samples, but the definition is uniq... | https://en.wikipedia.org/wiki/Magic_angle_(EELS) |
In solid-state NMR spectroscopy , magic-angle spinning (MAS) is a technique routinely used to produce better resolution NMR spectra. MAS NMR consists in spinning the sample (usually at a frequency of 1 to 130 kHz ) at the magic angle θ m (ca. 54.74°, where cos 2 θ m =1/3) with respect to the direction of the magnetic f... | https://en.wikipedia.org/wiki/Magic_angle_spinning |
A magic eye tube or tuning indicator , in technical literature called an electron-ray indicator tube , [ 1 ] is a vacuum tube which gives a visual indication of the amplitude of an electronic signal, such as an audio output, radio-frequency signal strength, or other functions. [ 1 ] The magic eye (also called a cat's e... | https://en.wikipedia.org/wiki/Magic_eye_tube |
The concept of magic numbers in the field of chemistry refers to a specific property (such as stability) for only certain representatives among a distribution of structures. It was first recognized by inspecting the intensity of mass-spectrometric signals of rare gas cluster ions. [ 1 ] Then, the same effect was observ... | https://en.wikipedia.org/wiki/Magic_number_(chemistry) |
In nuclear physics , a magic number is a number of nucleons (either protons or neutrons , separately) such that they are arranged into complete shells within the atomic nucleus . As a result, atomic nuclei with a "magic" number of protons or neutrons are much more stable than other nuclei. The seven most widely recogni... | https://en.wikipedia.org/wiki/Magic_number_(physics) |
In computer programming , a magic number is any of the following:
The term magic number or magic constant refers to the anti-pattern of using numbers directly in source code. This breaks one of the oldest rules of programming, dating back to the COBOL , FORTRAN and PL/1 manuals of the 1960s. [ 1 ]
In the following ex... | https://en.wikipedia.org/wiki/Magic_number_(programming) |
A magic pipe is a surreptitious change to a ship's oily water separator (OWS), or other waste-handing equipment, which allows waste liquids to be discharged in contravention of maritime pollution regulations. Such equipment alterations may allow hundreds of thousands of gallons of contaminated water to be discharged un... | https://en.wikipedia.org/wiki/Magic_pipe |
The magic pushbutton is a common anti-pattern in graphical user interfaces . [ 1 ] [ 2 ]
At its core, the anti-pattern consists of a system partitioned into two parts: user interface and business logic , that are coupled through a single point, clicking the "magic pushbutton" or submitting a form of data. As it is a s... | https://en.wikipedia.org/wiki/Magic_pushbutton |
In computer programming , a magic string is an input that a programmer believes will never come externally and which activates otherwise hidden functionality. A user of this program would likely provide input that gives an expected response in most situations. However, if the user does in fact innocently (unintentional... | https://en.wikipedia.org/wiki/Magic_string |
The magic wavelength (also known as a related quantity, magic frequency ) is the wavelength of an optical lattice where the polarizabilities of two atomic clock states have the same value, such that the AC Stark shift caused by the laser intensity fluctuation has no effect on the transition frequency between the two cl... | https://en.wikipedia.org/wiki/Magic_wavelength |
The Maginot Line ( / ˈ m æ ʒ ɪ n oʊ / ; French : Ligne Maginot [liɲ maʒino] ), [ a ] [ 1 ] named after the French Minister of War André Maginot , is a line of concrete fortifications , obstacles and weapon installations built by France in the 1930s to deter invasion by Nazi Germany and force them to move around the for... | https://en.wikipedia.org/wiki/Maginot_Line |
Magma oceans are vast fields of surface magma that exist during periods of a planet 's or some natural satellite 's accretion when the celestial body is completely or partly molten . [ 1 ]
In the early Solar System , magma oceans were formed by the melting of planetesimals and planetary impacts . [ 1 ] Small planetesi... | https://en.wikipedia.org/wiki/Magma_ocean |
Magmatic water , also known as juvenile water , is an aqueous phase in equilibrium with minerals that have been dissolved by magma deep within the Earth's crust and is released to the atmosphere during a volcanic eruption . It plays a key role in assessing the crystallization of igneous rocks , particularly silicates ,... | https://en.wikipedia.org/wiki/Magmatic_water |
A magnesium(I) dimer is a molecular compound containing a magnesium to magnesium bond (Mg-Mg), giving the metal an apparent +1 oxidation state. Alkaline earth metals are commonly found in the +2- oxidation state , such as magnesium . The M 2+ are considered as redox - inert , meaning that the +2 state is significant. [... | https://en.wikipedia.org/wiki/Magnesium(I)_dimer |
Magnesium/Teflon/Viton ( MTV ) is a pyrolant . Teflon and Viton are trademarks of DuPont for polytetrafluoroethylene , (C 2 F 4 ) n , and fluoroelastomer , (CH 2 CF 2 ) n (CF(CF 3 )CF 2 ) n . Thermites based on magnesium/Teflon/Viton, aka MTV-compositions, have been in use since the 1950s as payloads in infrared decoy ... | https://en.wikipedia.org/wiki/Magnesium/Teflon/Viton |
Magnesium aluminide is an intermetallic compound of magnesium and aluminium . Common phases (molecular structures) include the beta phase (Mg 2 Al 3 ) and the gamma phase (Mg 17 Al 12 ), which both have cubic crystal structures. Magnesium aluminides are important constituents of 5XXX aluminium alloys (aluminium-magnesi... | https://en.wikipedia.org/wiki/Magnesium_aluminide |
Magnesium azide is an inorganic chemical compound with the formula Mg(N 3 ) 2 . It is composed of the magnesium cation ( Mg 2+ ) and the azide anions ( N − 3 ).
Magnesium azide hydrolyzes easily. [ 1 ] [ 2 ] Like most azides, it is explosive.
This inorganic compound –related article is a stub . You can help Wikipedia... | https://en.wikipedia.org/wiki/Magnesium_azide |
Magnesium chloride is an inorganic compound with the formula Mg Cl 2 . It forms hydrates MgCl 2 · n H 2 O , where n can range from 1 to 12. These salts are colorless or white solids that are highly soluble in water. These compounds and their solutions, both of which occur in nature, have a variety of practical uses. An... | https://en.wikipedia.org/wiki/Magnesium_chloride |
Magnesium diboride is the inorganic compound of magnesium and boron with the formula MgB 2 . It is a dark gray, water-insoluble solid. The compound becomes superconducting at 39 K (−234 °C), which has attracted attention. In terms of its composition, MgB 2 differs strikingly from most low-temperature superconductors, w... | https://en.wikipedia.org/wiki/Magnesium_diboride |
Magnesium is an essential element in biological systems. Magnesium occurs typically as the Mg 2+ ion. It is an essential mineral nutrient (i.e., element) for life [ 1 ] [ 2 ] [ 3 ] [ 4 ] and is present in every cell type in every organism. For example, adenosine triphosphate (ATP), the main source of energy in cells, m... | https://en.wikipedia.org/wiki/Magnesium_in_biology |
Magnesium iodide is an inorganic compound with the chemical formula Mg I 2 . It forms various hydrates MgI 2 · x H 2 O . Magnesium iodide is a salt of magnesium and hydrogen iodide . These salts are typical ionic halides , being highly soluble in water.
Magnesium iodide has few commercial uses, but can be used to prep... | https://en.wikipedia.org/wiki/Magnesium_iodide |
Magnesium monoperoxyphthalate ( MMPP ) is a water-soluble peroxy acid used as an oxidant in organic synthesis . Its main areas of use are the conversion of ketones to esters ( Baeyer-Villiger oxidation ), epoxidation of alkenes ( Prilezhaev reaction ), oxidation of sulfides to sulfoxides and sulfones , oxidation of ami... | https://en.wikipedia.org/wiki/Magnesium_monoperoxyphthalate |
Magnesium nitrate refers to inorganic compounds with the formula Mg(NO 3 ) 2 (H 2 O) x , where x = 6, 2, and 0. All are white solids. [ 2 ] The anhydrous material is hygroscopic , quickly forming the hexahydrate upon standing in air. All of the salts are very soluble in both water and ethanol .
Being highly water-sol... | https://en.wikipedia.org/wiki/Magnesium_nitrate |
Magnesium "oil" (also referred to as transdermal magnesium, magnesium hexahydrate ) is a colloquial misnomer for a concentrated solution of magnesium chloride in water. It is oily only in the sense that it feels oily to the touch, but unlike a true oil it mixes freely with water—as it must, being an aqueous solution. M... | https://en.wikipedia.org/wiki/Magnesium_oil |
Magnesium oxalate is an organic compound comprising a magnesium cation with a 2+ charge bonded to an oxalate anion . It has the chemical formula MgC 2 O 4 . Magnesium oxalate is a white solid that comes in two forms: an anhydrous form and a dihydrate form where two water molecules are complexed with the structure. B... | https://en.wikipedia.org/wiki/Magnesium_oxalate |
Magnesium transporters are proteins that transport magnesium across the cell membrane . All forms of life require magnesium , yet the molecular mechanisms of Mg 2+ uptake from the environment and the distribution of this vital element within the organism are only slowly being elucidated.
The ATPase function of MgtA is... | https://en.wikipedia.org/wiki/Magnesium_transporter |
Magnet-assisted transfection is a transfection method which uses magnetic interactions to deliver DNA into target cells. Nucleic acids are associated with magnetic nanoparticles , and magnetic fields drive the nucleic acid-particle complexes into target cells, where the nucleic acids are released. [ 1 ] [ 2 ]
Nanopart... | https://en.wikipedia.org/wiki/Magnet-assisted_transfection |
Magnet fishing , also called magnetic fishing , is searching in outdoor waters for ferromagnetic objects available to pull with a strong neodymium magnet . [ 1 ]
In English, people who practice magnet fishing may be called magnetfishers or magneteers.
It is thought magnet fishing was initially started by boaters usin... | https://en.wikipedia.org/wiki/Magnet_fishing |
Magnetation is the processing of iron ore tailings, the waste product of iron ore mines, to recover hematite . Crushed mine tailings are mixed with water to create a slurry ; the slurry is then pumped through magnetic separation chambers to extract hematite. Commercial interest in this process stems from the possibili... | https://en.wikipedia.org/wiki/Magnetation_(iron_ore) |
Magnetic-activated cell sorting ( MACS ) is a method for separation of various cell populations depending on their surface antigens ( CD molecules ) invented by Miltenyi Biotec . The name MACS is a registered trademark of the company.
The method was developed with Miltenyi Biotec's MACS system, which uses superparamag... | https://en.wikipedia.org/wiki/Magnetic-activated_cell_sorting |
Magnetic 2D materials or magnetic van der Waals materials are two-dimensional materials that display ordered magnetic properties such as antiferromagnetism or ferromagnetism . After the discovery of graphene in 2004, the family of 2D materials has grown rapidly. There have since been reports of several related material... | https://en.wikipedia.org/wiki/Magnetic_2D_materials |
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