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Что (кто) такое electron transit - определение
FORMALISM USED FOR CLASSIFYING COMPOUNDS AND FOR EXPLAINING OR PREDICTING ELECTRONIC STRUCTURE AND BONDING
Hillhouse electron counting; Hillhouse Electron Counting; Electron count; Electron-counting
Найдено результатов: 1171
Electron-transferring flavoprotein
FLAVOPROTEINS THAT SERVE AS SPECIFIC ELECTRON ACCEPTORS FOR A VARIETY OF DEHYDROGENASES
Electron-transferring flavoproteins; Electron transferring flavoprotein; Electron transferring flavoproteins; Electron transfer protein; Electron transfer flavoprotein; Electron-transfer flavoprotein
An electron transfer flavoprotein (ETF) or electron transfer flavoprotein complex (CETF) is a flavoprotein located on the matrix face of the inner mitochondrial membrane and functions as a specific electron acceptor for primary dehydrogenases, transferring the electrons to terminal respiratory systems such as electron-transferring-flavoprotein dehydrogenase. They can be functionally classified into constitutive, "housekeeping" ETFs, mainly involved in the oxidation of fatty acids (Group I), and ETFs produced by some prokaryotes under specific growth conditions, receiving electrons only from the oxidation of specific substrates (Group II).
Transit (ship)
 in two views.jpg?width=200){kind=spacer}
THE NAME GIVEN TO THE THREE SAILING VESSELS DESIGNED AND BUILT FOR CAPTAIN RICHARD HALL GOWER
SV Transit
Transit was the name given to an innovative sailing ship designed for speed by Captain Richard Hall Gower and built in 1800. Gower also designed two similar ships with the same name.
Internet transit
SERVICE OF ALLOWING NETWORK TRAFFIC TO CROSS OR "TRANSIT" A COMPUTER NETWORK, TYPICALLY PROVIDING INTERNET SERVICE TO DOWNSTREAM NETWORKS.
Transit (internet); IP transit; IP Transit (Internet); Transit-free network; Transit provider; Transit (Internet)
Internet transit is the service of allowing network traffic to cross or "transit" a computer network, usually used to connect a smaller Internet service provider (ISP) to the larger Internet. Technically, it consists of two bundled services:
Electron magnetic moment
SPIN OF AN ELECTRON
Electron spin; Electron Magnetic Moment; Electron magnetic dipole moment
In atomic physics, the electron magnetic moment, or more specifically the electron magnetic dipole moment, is the magnetic moment of an electron resulting from its intrinsic properties of spin and electric charge. The value of the electron magnetic moment is The electron magnetic moment has been measured to an accuracy of relative to the Bohr magneton.
Electron capture
![W boson]] to create a [[down quark]] and [[electron neutrino]]. Two diagrams comprise the leading (second) order, though as a [[virtual particle]], the type (and charge) of the W-boson is indistinguishable.](https://commons.wikimedia.org/wiki/Special:FilePath/Electron-capture.svg?width=200 "W boson]] to create a [[down quark]] and [[electron neutrino]]. Two diagrams comprise the leading (second) order, though as a [[virtual particle]], the type (and charge) of the W-boson is indistinguishable.")
PROCESS IN WHICH A PROTON-RICH NUCLIDE ABSORBS AN INNER ATOMIC ELECTRON
Epsilon decay; K-Capture; K-capture; EC decay; Electron capture decay; L-electron capture; K-electron capture; K capture; L capture; L-capture; Inverse-beta decay; Electron-capture; Electron Capture; K Capture; K Captures; Electron Captures; K-Electron Capture; K Electron Capture; K Electron Captures; K-Electron Captures
Electron capture (K-electron capture, also K-capture, or L-electron capture, L-capture) is a process in which the proton-rich nucleus of an electrically neutral atom absorbs an inner atomic electron, usually from the K or L electron shells. This process thereby changes a nuclear proton to a neutron and simultaneously causes the emission of an electron neutrino.
Transit (astronomy)
![Cassini]]'' spacecraft](https://commons.wikimedia.org/wiki/Special:FilePath/PIA02879 - A New Year for Jupiter and Io.jpg?width=200 "Cassini]]'' spacecraft")
![''Curiosity'']] rover on Mars (3 June 2014).](https://commons.wikimedia.org/wiki/Special:FilePath/PIA18389-MarsCuriosityRover-MercuryTransitsSun-20140603.gif?width=200 "''Curiosity'']] rover on Mars (3 June 2014).")
PHENOMENON WHEN A CELESTIAL BODY PASSES DIRECTLY BETWEEN A LARGER BODY AND THE OBSERVER
First contact (astronomy); Transiting planet; Planetary transit; Third contact; Fourth contact; Transit (astronomy)
In astronomy, a transit (or astronomical transit) is a phenomenon when a celestial body passes directly between a larger body and the observer. As viewed from a particular vantage point, the transiting body appears to move across the face of the larger body, covering a small portion of it.
Electron-beam processing
PROCESS WHICH INVOLVES USING ELECTRONS, USUALLY OF HIGH ENERGY, TO TREAT AN OBJECT FOR A VARIETY OF PURPOSES
Electron irradiation; E-beam; Electron beam processing; Radiation Crosslinking
Electron-beam processing or electron irradiation (EBI) is a process that involves using electrons, usually of high energy, to treat an object for a variety of purposes. This may take place under elevated temperatures and nitrogen atmosphere.
Astronomical transit
PHENOMENON WHEN A CELESTIAL BODY PASSES DIRECTLY BETWEEN A LARGER BODY AND THE OBSERVER
First contact (astronomy); Transiting planet; Planetary transit; Third contact; Fourth contact; Transit (astronomy)
In astronomy, a transit (or astronomical transit) is a phenomenon when a celestial body passes directly between a larger body and the observer. As viewed from a particular vantage point, the transiting body appears to move across the face of the larger body, covering a small portion of it.
scanning electron microscope
![M. von Ardenne's]] first SEM](https://commons.wikimedia.org/wiki/Special:FilePath/First Scanning Electron Microscope with high resolution from Manfred von Ardenne 1937.jpg?width=200 "M. von Ardenne's]] first SEM")
![Low-temperature SEM magnification series for a [[snow]] crystal. The crystals are captured, stored, and sputter-coated with platinum at cryogenic temperatures for imaging.](https://commons.wikimedia.org/wiki/Special:FilePath/LT-SEM snow crystal magnification series-3.jpg?width=200 "Low-temperature SEM magnification series for a [[snow]] crystal. The crystals are captured, stored, and sputter-coated with platinum at cryogenic temperatures for imaging.")
.svg?width=200 "Schematic of an SEM")
![SEM image of ''[[Cobaea scandens]]'' pollen](https://commons.wikimedia.org/wiki/Special:FilePath/Cobaea scandens1-4.jpg?width=200 "SEM image of ''[[Cobaea scandens]]'' pollen")
![Colored SEM image of ''[[Tradescantia]]'' pollen and stamens](https://commons.wikimedia.org/wiki/Special:FilePath/Tradescantia tolmukakarvad ja õietolm.JPG ?width=200 "Colored SEM image of ''[[Tradescantia]]'' pollen and stamens")
![Colored SEM image of native [[gold]] and [[arsenopyrite]] crystal intergrowth](https://commons.wikimedia.org/wiki/Special:FilePath/Gold on arsenopyrite SEM image.png ?width=200 "Colored SEM image of native [[gold]] and [[arsenopyrite]] crystal intergrowth")
![An SEM stereo pair of [[microfossils]] of less than 1 mm in size ([[Ostracoda]]) produced by tilting along the longitudinal axis.](https://commons.wikimedia.org/wiki/Special:FilePath/SEM Stereo Pair.jpg?width=200 "An SEM stereo pair of [[microfossils]] of less than 1 mm in size ([[Ostracoda]]) produced by tilting along the longitudinal axis.")
![MountainsSEM]] software, see next image); then a series of 3D representations with different angles have been made and assembled into a GIF file to produce this animation.](https://commons.wikimedia.org/wiki/Special:FilePath/SEM Stereo pair of micro-fossil (Juxilyocypris schwarzbachi Ostracoda).gif?width=200 "MountainsSEM]] software, see next image); then a series of 3D representations with different angles have been made and assembled into a GIF file to produce this animation.")
![roughness]] calibration sample (as used to calibrate profilometers), from 2 scanning electron microscope images tilted by 15° (top left). The calculation of the 3D model (bottom right) takes about 1.5 secondStereo SEM reconstruction using MountainsMap SEM version 7.4 on i7 2600 CPU at 3.4 GHz and the error on the Ra roughness value calculated is less than 0.5%.](https://commons.wikimedia.org/wiki/Special:FilePath/3D surface reconstruction from 2 scanning electron microscope images.gif?width=200 "roughness]] calibration sample (as used to calibrate profilometers), from 2 scanning electron microscope images tilted by 15° (top left). The calculation of the 3D model (bottom right) takes about 1.5 secondStereo SEM reconstruction using MountainsMap SEM version 7.4 on i7 2600 CPU at 3.4 GHz and the error on the Ra roughness value calculated is less than 0.5%.")
![SEM 3D reconstruction from the previous using [[shape from shading]] algorithms.](https://commons.wikimedia.org/wiki/Special:FilePath/Fly Eye 3D SEM Image with form.jpg?width=200 "SEM 3D reconstruction from the previous using [[shape from shading]] algorithms.")
![artificial coloring]] makes the image easier for non-specialists to view and understand the structures and surfaces revealed in micrographs.](https://commons.wikimedia.org/wiki/Special:FilePath/Soybean cyst nematode and egg SEM.jpg?width=200 "artificial coloring]] makes the image easier for non-specialists to view and understand the structures and surfaces revealed in micrographs.")
![[[Compound eye]] of [[Antarctic krill]] ''Euphausia superba''. Arthropod eyes are a common subject in SEM micrographs due to the depth of focus that an SEM image can capture. Colored picture.](https://commons.wikimedia.org/wiki/Special:FilePath/Krilleyekils.jpg?width=200 "[[Compound eye]] of [[Antarctic krill]] ''Euphausia superba''. Arthropod eyes are a common subject in SEM micrographs due to the depth of focus that an SEM image can capture. Colored picture.")
![TEM]]. Colored picture.](https://commons.wikimedia.org/wiki/Special:FilePath/Antarctic krill ommatidia.jpg?width=200 "TEM]]. Colored picture.")
![blood]]. This is an older and noisy micrograph of a common subject for SEM micrographs: red blood cells.](https://commons.wikimedia.org/wiki/Special:FilePath/SEM blood cells.jpg?width=200 "blood]]. This is an older and noisy micrograph of a common subject for SEM micrographs: red blood cells.")
![hederelloid]] from the [[Devonian]] of Michigan (largest tube diameter is 0.75 mm). The SEM is used extensively for capturing detailed images of micro and macro fossils.](https://commons.wikimedia.org/wiki/Special:FilePath/HederelloidSEM.jpg?width=200 "hederelloid]] from the [[Devonian]] of Michigan (largest tube diameter is 0.75 mm). The SEM is used extensively for capturing detailed images of micro and macro fossils.")
![Backscattered electron (BSE) image of an [[antimony]]-rich region in a fragment of ancient glass. Museums use SEMs for studying valuable artifacts in a nondestructive manner.](https://commons.wikimedia.org/wiki/Special:FilePath/BSEGlassInclusionSb.jpg?width=200 "Backscattered electron (BSE) image of an [[antimony]]-rich region in a fragment of ancient glass. Museums use SEMs for studying valuable artifacts in a nondestructive manner.")
![field emission]] SEM. These SEMs are important in the semiconductor industry for their high-resolution capabilities.](https://commons.wikimedia.org/wiki/Special:FilePath/Photoresist SEM micrograph.JPG?width=200 "field emission]] SEM. These SEMs are important in the semiconductor industry for their high-resolution capabilities.")
![Two images of the same [[depth hoar]] [[snow]] crystal, viewed through a light microscope (left) and as an SEM image (right). Note how the SEM image allows for clear perception of the fine structure details which are hard to fully make out in the light microscope image.](https://commons.wikimedia.org/wiki/Special:FilePath/LightLTSEM.jpg?width=200 "Two images of the same [[depth hoar]] [[snow]] crystal, viewed through a light microscope (left) and as an SEM image (right). Note how the SEM image allows for clear perception of the fine structure details which are hard to fully make out in the light microscope image.")
![Epidermal cells from the inner surface of an [[onion]] flake. Beneath the shagreen-like cell walls one can see nuclei and small organelles floating in the cytoplasm. This BSE-image of a lanthanoid-stained sample was taken without prior fixation, nor dehydration, nor sputtering.](https://commons.wikimedia.org/wiki/Special:FilePath/Onion flake. Cells. SEM-BSE.jpg?width=200 "Epidermal cells from the inner surface of an [[onion]] flake. Beneath the shagreen-like cell walls one can see nuclei and small organelles floating in the cytoplasm. This BSE-image of a lanthanoid-stained sample was taken without prior fixation, nor dehydration, nor sputtering.")
TYPE OF ELECTRON MICROSCOPE
Scanning Electron Microscope; Scanning electron microscopy; Scanning electron micrograph; Microscopy, electron, scanning; Scanning Electron Microscopy; FESEM; Fegsem; SEM study; Scanning electron; Scanning electron microscopes; Scanning electron microscopies; Scanning Electron Micrograph; 3D SEM surface reconstruction; 3D reconstruction of SEM images; Scanning electron micrographs; Ion-abrasion SEM; History of scanning electron microscopy; Interaction volume
¦ noun an electron microscope in which the surface of a specimen is scanned by a beam of electrons that are reflected to form an image.
Scanning electron microscope
TYPE OF ELECTRON MICROSCOPE
Scanning Electron Microscope; Scanning electron microscopy; Scanning electron micrograph; Microscopy, electron, scanning; Scanning Electron Microscopy; FESEM; Fegsem; SEM study; Scanning electron; Scanning electron microscopes; Scanning electron microscopies; Scanning Electron Micrograph; 3D SEM surface reconstruction; 3D reconstruction of SEM images; Scanning electron micrographs; Ion-abrasion SEM; History of scanning electron microscopy; Interaction volume
A scanning electron microscope (SEM) is a type of electron microscope that produces images of a sample by scanning the surface with a focused beam of electrons. The electrons interact with atoms in the sample, producing various signals that contain information about the surface topography and composition of the sample.
Википедия
Electron counting
In chemistry, electron counting is a formalism for assigning a number of valence electrons to individual atoms in a molecule. It is used for classifying compounds and for explaining or predicting their electronic structure and bonding. Many rules in chemistry rely on electron-counting:
- Octet rule is used with Lewis structures for main group elements, especially the lighter ones such as carbon, nitrogen, and oxygen,
- 18-electron rule in inorganic chemistry and organometallic chemistry of transition metals,
- Hückel's rule for the π-electrons of aromatic compounds,
- Polyhedral skeletal electron pair theory for polyhedral cluster compounds, including transition metals and main group elements and mixtures thereof, such as boranes.
Atoms are called "electron-deficient" when they have too few electrons as compared to their respective rules, or "hypervalent" when they have too many electrons. Since these compounds tend to be more reactive than compounds that obey their rule, electron counting is an important tool for identifying the reactivity of molecules. While the counting formalism considers each atom separately, these individual atoms (with their hypothetical assigned charge) do not generally exist as free species.
