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Some antiferromagnetic materials exhibit a non-zero magnetic moment at a temperature near absolute zero . This effect is ascribed to spin canting , a phenomenon through which spins are tilted by a small angle about their axis rather than being exactly co-parallel.
Spin canting is due to two factors contrasting each ot... | https://en.wikipedia.org/wiki/Spin_canting |
A spin chain is a type of model in statistical physics . Spin chains were originally formulated to model magnetic systems, which typically consist of particles with magnetic spin located at fixed sites on a lattice . A prototypical example is the quantum Heisenberg model . Interactions between the sites are modelled by... | https://en.wikipedia.org/wiki/Spin_chain |
Spin chemistry is a sub-field of chemistry positioned at the intersection of chemical kinetics , photochemistry , magnetic resonance and free radical chemistry, that deals with magnetic and spin effects in chemical reactions. Spin chemistry concerns phenomena such as chemically induced dynamic nuclear polarization (CID... | https://en.wikipedia.org/wiki/Spin_chemistry |
Spin column-based nucleic acid purification is a solid phase extraction method to quickly purify nucleic acids . This method relies on the fact that nucleic acid will bind to the solid phase of silica under certain conditions.
The different stages of the method are lyse, bind, wash, and elute. [ 1 ] [ 2 ] More specifi... | https://en.wikipedia.org/wiki/Spin_column-based_nucleic_acid_purification |
In computational chemistry , spin contamination is the artificial mixing of different electronic spin -states. This can occur when an approximate orbital-based wave function is represented in an unrestricted form – that is, when the spatial parts of α and β spin-orbitals are permitted to differ. Approximate wave functi... | https://en.wikipedia.org/wiki/Spin_contamination |
Spin crossover (SCO) is a phenomenon that occurs in some metal complexes wherein the spin state of the complex changes due to an external stimulus. The stimuli can include temperature, pressure or radiation. [ 1 ] Spin crossover is referred to as spin transition if takes place suddenly,or spin equilibrium , when is gra... | https://en.wikipedia.org/wiki/Spin_crossover |
Spin-density wave (SDW) and charge-density wave (CDW) are names for two similar low-energy ordered states of solids. Both these states occur at low temperature in anisotropic , low-dimensional materials or in metals that have high densities of states at the Fermi level N ( E F ) {\displaystyle N(E_{F})} . Other low-t... | https://en.wikipedia.org/wiki/Spin_density_wave |
Spin diffusion describes a situation wherein the individual nuclear spins undergo continuous exchange of energy. [ 1 ] This permits polarization differences within the sample to be reduced on a timescale much shorter than relaxation effects. [ 1 ]
Spin diffusion is a process by which magnetization can be exchanged spo... | https://en.wikipedia.org/wiki/Spin_diffusion |
In magnetic resonance , a spin echo or Hahn echo is the refocusing of spin magnetisation by a pulse of resonant electromagnetic radiation . [ 1 ] Modern nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) make use of this effect.
The NMR signal observed following an initial excitation pulse decays wi... | https://en.wikipedia.org/wiki/Spin_echo |
Spin echo small angle neutron scattering (SESANS) measures structures from around 20 to 2000 nm in size. The information is presented as a real-space (similar to g(r)) as opposed to a reciprocal space (q(r)) mapping. This can simplify the interpretation for some systems. [ 1 ] SESANS is useful for studying processes th... | https://en.wikipedia.org/wiki/Spin_echo_small_angle_neutron_scattering |
Spin engineering describes the control and manipulation of quantum spin systems to develop devices and materials. This includes the use of the spin degrees of freedom as a probe for spin based phenomena.
Because of the basic importance of quantum spin for physical and chemical processes, spin engineering is relevant ... | https://en.wikipedia.org/wiki/Spin_engineering |
In physics , the topological structure of spinfoam or spin foam [ 1 ] consists of two-dimensional faces representing a configuration required by functional integration to obtain a Feynman's path integral description of quantum gravity . These structures are employed in loop quantum gravity as a version of quantum foam ... | https://en.wikipedia.org/wiki/Spin_foam |
Spin gapless semiconductors are materials in which the electronic band structure has no band gap for one spin channel while but a finite gap for the other. [ 1 ]
In a spin gapless semiconductor, conduction and valence band edges touch, so that no threshold energy is required to move electrons from occupied (valence) s... | https://en.wikipedia.org/wiki/Spin_gapless_semiconductor |
In condensed matter physics , a spin glass is a magnetic state characterized by randomness, besides cooperative behavior in freezing of spins at a temperature called the "freezing temperature," T f . [ 1 ] In ferromagnetic solids, component atoms' magnetic spins all align in the same direction. Spin glass when contra... | https://en.wikipedia.org/wiki/Spin_glass |
A spin ice is a magnetic substance that does not have a single minimal-energy state . It has magnetic moments (i.e. "spin" ) as elementary degrees of freedom which are subject to frustrated interactions . By their nature, these interactions prevent the moments from exhibiting a periodic pattern in their orientation dow... | https://en.wikipedia.org/wiki/Spin_ice |
A spin label (SL) is an organic molecule which possesses an unpaired electron , usually on a nitrogen atom, and the ability to bind to another molecule. Spin labels are normally used as tools for probing proteins or biological membrane -local dynamics using electron paramagnetic resonance spectroscopy . The site-direct... | https://en.wikipedia.org/wiki/Spin_label |
A spin model is a mathematical model used in physics primarily to explain magnetism . Spin models may either be classical or quantum mechanical in nature. Spin models have been studied in quantum field theory as examples of integrable models . Spin models are also used in quantum information theory and computability th... | https://en.wikipedia.org/wiki/Spin_model |
In particle physics , spin polarization is the degree to which the spin , i.e., the intrinsic angular momentum of elementary particles , is aligned with a given direction. [ 1 ] This property may pertain to the spin, hence to the magnetic moment , of conduction electrons in ferromagnetic metals, such as iron , giving r... | https://en.wikipedia.org/wiki/Spin_polarization |
A spin probe is a molecule with stable free radical character that carries a functional group . This group can be used to couple the probe to another molecule, e.g. a biomolecule .
Electron spin resonance can be employed to quantify the probe's concentration. [ 1 ]
This molecular physics –related article is a stub . ... | https://en.wikipedia.org/wiki/Spin_probe |
Spin states when describing transition metal coordination complexes refers to the potential spin configurations of the central metal's d electrons. For several oxidation states, metals can adopt high-spin and low-spin configurations. The ambiguity only applies to first row metals, because second- and third-row metals a... | https://en.wikipedia.org/wiki/Spin_states_(d_electrons) |
The spin stiffness or spin rigidity is a constant which represents the change in the ground state energy of a spin system as a result of introducing a slow in-plane twist of the spins. The importance of this constant is in its use as an indicator of quantum phase transitions —specifically in models with metal-insulator... | https://en.wikipedia.org/wiki/Spin_stiffness |
In mathematics , mathematical physics , and theoretical physics , the spin tensor is a quantity used to describe the rotational motion of particles in spacetime . The spin tensor has application in general relativity and special relativity , as well as quantum mechanics , relativistic quantum mechanics , and quantum fi... | https://en.wikipedia.org/wiki/Spin_tensor |
The spin transition is an example of transition between two electronic states in molecular chemistry . The ability of an electron to transit from a stable to another stable (or metastable ) electronic state in a reversible and detectable fashion, makes these molecular systems appealing in the field of molecular electro... | https://en.wikipedia.org/wiki/Spin_transition |
Spin trapping is an analytical technique employed in chemistry [ 1 ] and biology [ 2 ] for the detection and identification of short-lived free radicals through the use of electron paramagnetic resonance (EPR) spectroscopy. EPR spectroscopy detects paramagnetic species such as the unpaired electrons of free radicals. H... | https://en.wikipedia.org/wiki/Spin_trapping |
In condensed matter physics , a spin wave is a propagating disturbance in the ordering of a magnetic material. These low-lying collective excitations occur in magnetic lattices with continuous symmetry . From the equivalent quasiparticle point of view, spin waves are known as magnons , which are bosonic modes of the sp... | https://en.wikipedia.org/wiki/Spin_wave |
Spinach is an open-source magnetic resonance simulation package initially released in 2011 [ 1 ] and continuously updated since. [ 2 ] The package is written in Matlab and makes use of the built-in parallel computing and GPU interfaces of Matlab . [ 3 ]
The name of the package whimsically refers to the physical concep... | https://en.wikipedia.org/wiki/Spinach_(software) |
The need for fluorescently tracking RNA rose as its roles in complex cellular functions has grown to not only include mRNA , rRNA , and tRNA , but also RNAi , siRNA , snoRNA , and lncRNA , among others. [ 1 ] [ 2 ] Spinach is a synthetically derived RNA aptamer born out of the need for a way of studying the role of RNA... | https://en.wikipedia.org/wiki/Spinach_aptamer |
Spinal cord injury research seeks new ways to cure or treat spinal cord injury in order to lessen the debilitating effects of the injury in the short or long term. There is no cure for SCI, and current treatments are mostly focused on spinal cord injury rehabilitation and management of the secondary effects of the con... | https://en.wikipedia.org/wiki/Spinal_cord_injury_research |
SPINDLE ( Sub-glacial Polar Ice Navigation, Descent, and Lake Exploration ) is a 2-stage autonomous vehicle system consisting of a robotic ice-penetrating carrier vehicle ( cryobot ) and an autonomous submersible HAUV (hovering autonomous underwater vehicle). [ 1 ] The cryobot is designed to descend through an ice body... | https://en.wikipedia.org/wiki/Spindle_(vehicle) |
Spinlock is a technology based company specialized in the manufacture and development of nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) equipment.
Spinlock was founded in 2003 by Dr. Daniel J. Pusiol, a renowned physicist specialized in NMR and NQR, professor at the National University of Córd... | https://en.wikipedia.org/wiki/Spinlock_SRL |
Spinmechatronics / ˌ s p ɪ n əm ɛ k ə ˈ t r ɒ n ɪ k s / is neologism referring to an emerging field of research concerned with the exploitation of spin -dependent phenomena and established spintronic methodologies and technologies in conjunction with electro-mechanical, magno-mechanical, acousto-mechanical and opto-mec... | https://en.wikipedia.org/wiki/Spinmechatronics |
Spinning is a manufacturing process for creating polymer fibers . It is a specialized form of extrusion that uses a spinneret to form multiple continuous filaments. [ 1 ]
If the polymer is a thermoplastic then it can undergo melt spinning. The molten polymer is extruded through a spinneret composed of capillaries wher... | https://en.wikipedia.org/wiki/Spinning_(polymers) |
Spinning is a twisting technique to form yarn from fibers . The fiber intended is drawn out, twisted, and wound onto a bobbin . A few popular fibers that are spun into yarn other than cotton , which is the most popular, are viscose (the most common form of rayon), animal fibers such as wool , and synthetic polyester . ... | https://en.wikipedia.org/wiki/Spinning_(textiles) |
Spinning band distillation is a technique used to separate liquid mixtures which are similar in boiling points. When liquids with similar boiling points are distilled , the vapors are mixtures, and not pure compounds. Fractionating columns help separate the mixture by allowing the mixed vapors to cool, condense, and va... | https://en.wikipedia.org/wiki/Spinning_band_distillation |
Spinning cone columns are used in a form of low temperature vacuum steam distillation to gently extract volatile chemicals from liquid foodstuffs while minimising the effect on the taste of the product. For instance, the columns can be used to remove some of the alcohol from wine, to remove "off" smells from cream, and... | https://en.wikipedia.org/wiki/Spinning_cone |
The spinning pinwheel is a type of progress indicator and a variation of the mouse pointer used in Apple 's macOS to indicate that an application is busy. [ 1 ]
Officially, the macOS Human Interface Guidelines refer to it as the spinning wait cursor , [ 2 ] but it is also known by other names. These include, but are n... | https://en.wikipedia.org/wiki/Spinning_pinwheel |
Spinnova Plc (natively Spinnova Oyj ) is a Finnish textile material innovation company that has developed a patented technology for making textile fibre from wood, pulp, or waste, without harmful dissolving chemicals. [ 1 ]
The company has developed a machine which can transform cellulosic pulp into fiber for the text... | https://en.wikipedia.org/wiki/Spinnova |
In thermodynamics , the limit of local stability against phase separation with respect to small fluctuations is clearly defined by the condition that the second derivative of Gibbs free energy is zero.
The locus of these points (the inflection point within a G-x or G-c curve, Gibbs free energy as a function of composi... | https://en.wikipedia.org/wiki/Spinodal |
Spinodal decomposition is a mechanism by which a single thermodynamic phase spontaneously separates into two phases (without nucleation ). [ 1 ] Decomposition occurs when there is no thermodynamic barrier to phase separation. As a result, phase separation via decomposition does not require the nucleation events resulti... | https://en.wikipedia.org/wiki/Spinodal_decomposition |
In geometry and physics , spinors (pronounced "spinner" IPA / s p ɪ n ər / ) are elements of a complex vector space that can be associated with Euclidean space . [ b ] A spinor transforms linearly when the Euclidean space is subjected to a slight ( infinitesimal ) rotation, [ c ] but unlike geometric vectors and tensor... | https://en.wikipedia.org/wiki/Spinor |
Spinor condensates are degenerate Bose gases that have degrees of freedom arising from the internal spin of the constituent particles [ 1 ] . [ 2 ] They are described by a multi-component (spinor) order parameter .
Since their initial experimental realisation,
a wealth of studies have appeared, both
experimental and th... | https://en.wikipedia.org/wiki/Spinor_condensate |
In mathematics , the spinor concept as specialised to three dimensions can be treated by means of the traditional notions of dot product and cross product . This is part of the detailed algebraic discussion of the rotation group SO(3) .
The association of a spinor with a 2×2 complex traceless Hermitian matrix was form... | https://en.wikipedia.org/wiki/Spinors_in_three_dimensions |
A spinthariscope ( / s p ɪ n ˈ θ ær ɪ s k oʊ p / ) [ 2 ] [ 3 ] is a device for observing individual nuclear disintegrations caused by the interaction of ionizing radiation with a phosphor (see radioluminescence ) or scintillator .
The spinthariscope was invented by William Crookes in 1903. [ 4 ] [ 5 ] While observing ... | https://en.wikipedia.org/wiki/Spinthariscope |
Spintronics (a portmanteau meaning spin transport electronics [ 1 ] [ 2 ] [ 3 ] ), also known as spin electronics , is the study of the intrinsic spin of the electron and its associated magnetic moment , in addition to its fundamental electronic charge , in solid-state devices . [ 4 ] The field of spintronics concerns ... | https://en.wikipedia.org/wiki/Spintronics |
In condensed matter physics , spin–charge separation is an unusual behavior of electrons in some materials in which they 'split' into three independent particles, the spinon , the orbiton and the holon (or chargon). The electron can always be theoretically considered as a bound state of the three, with the spinon carry... | https://en.wikipedia.org/wiki/Spin–charge_separation |
During nuclear magnetic resonance observations, spin–lattice relaxation is the mechanism by which the longitudinal component of the total nuclear magnetic moment vector (parallel to the constant magnetic field) exponentially relaxes from a higher energy, non-equilibrium state to thermodynamic equilibrium with its surro... | https://en.wikipedia.org/wiki/Spin–lattice_relaxation |
During nuclear magnetic resonance observations, spin–lattice relaxation is the mechanism by which the longitudinal component of the total nuclear magnetic moment vector (parallel to the constant magnetic field) exponentially relaxes from a higher energy, non-equilibrium state to thermodynamic equilibrium with its surro... | https://en.wikipedia.org/wiki/Spin–lattice_relaxation_in_the_rotating_frame |
In physics , the spin–spin relaxation is the mechanism by which M xy , the transverse component of the magnetization vector, exponentially decays towards its equilibrium value in nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI). It is characterized by the spin–spin relaxation time , known as T 2 , ... | https://en.wikipedia.org/wiki/Spin–spin_relaxation |
The spin–statistics theorem proves that the observed relationship between the intrinsic spin of a particle ( angular momentum not due to the orbital motion) and the quantum particle statistics of collections of such particles is a consequence of the mathematics of quantum mechanics . In units of the reduced Planck cons... | https://en.wikipedia.org/wiki/Spin–statistics_theorem |
A spiral antenna is a type of radio frequency antenna shaped as a spiral , [ 1 ] : 14‑2 first described in 1956. [ 2 ] Archimedean spiral antennas are the most popular, while logarithmic spiral antennas are independent of frequency: [ 3 ] the driving point impedance, radiation pattern and polarization of such antennas... | https://en.wikipedia.org/wiki/Spiral_antenna |
Spiral arms are a defining feature of spiral galaxies . They manifest as spiral -shaped regions of enhanced brightness within the galactic disc . Typically, spiral galaxies exhibit two or more spiral arms. The collective configuration of these arms is referred to as the spiral pattern or spiral structure of the galaxy.... | https://en.wikipedia.org/wiki/Spiral_arm |
In geometry , the spiral of Theodorus (also called the square root spiral , Pythagorean spiral , or Pythagoras's snail ) [ 1 ] is a spiral composed of right triangles , placed edge-to-edge. It was named after Theodorus of Cyrene .
The spiral is started with an isosceles right triangle, with each leg having unit length... | https://en.wikipedia.org/wiki/Spiral_of_Theodorus |
A spiral plater is an instrument used to dispense a liquid sample onto a Petri dish in a spiral pattern. Commonly used as part of a CFU count procedure for the purpose of determining the number of microbes in the sample. [ 1 ] In this setting, after spiral plating, the Petri dish is incubated for several hours after wh... | https://en.wikipedia.org/wiki/Spiral_plater |
The term spiral separator can refer to either a device for separating slurry components by density ( wet spiral separators ), or for a device for sorting particles by shape ( dry spiral separators ).
Spiral separators of the wet type, also called spiral concentrators , are devices to separate solid components in a slu... | https://en.wikipedia.org/wiki/Spiral_separator |
In geometry , a spirangle is a spiral polygonal chain . Spirangles are similar to spirals in that they expand from a center point as they grow larger, but they are made out of straight line segments , instead of curves. Spirangle vectographs are used in vision therapy to promote stereopsis and help resolve problems wi... | https://en.wikipedia.org/wiki/Spirangle |
Spirapril , sold under the brand name Renormax among others, is an ACE inhibitor antihypertensive drug used to treat hypertension . It belongs to dicarboxy group of ACE inhibitors. [ citation needed ]
It was patented in 1980 and approved for medical use in 1995. [ 1 ]
Like many ACE inhibitors, this prodrug is convert... | https://en.wikipedia.org/wiki/Spirapril |
Spiridoula Christos Matsika (born 1971) is a Greek theoretical chemist . She was elected as a fellow of the American Physical Society in 2014.
Spiridoula Christos Matsika was born in 1971 in Greece; [ 1 ] [ 2 ] she attended the National and Kapodistrian University of Athens for her bachelor's degree in chemistry, grad... | https://en.wikipedia.org/wiki/Spiridoula_Matsika |
A spirit safe or intermediate spirit receiver is an enclosed device used in the distillation of Scotch whisky . The distillate from the still passes into it, and can be seen through the glass sides or windows, but cannot be directly accessed. The distiller can analyse the spirit inside the device, and decide where it s... | https://en.wikipedia.org/wiki/Spirit_safe |
In organic chemistry , spiro compounds are compounds that have at least two molecular rings sharing one common atom. Simple spiro compounds are bicyclic (having just two rings). [ 2 ] : SP-0 [ 3 ] : 653, 839 The presence of only one common atom connecting the two rings distinguishes spiro compounds from other bicyclics... | https://en.wikipedia.org/wiki/Spiroaromaticity |
Spiroligomer molecules (also known as bis-peptides ) are synthetic oligomers made by coupling pairs of bis-amino acids into a fused ring system. [ 1 ] Spiroligomer molecules are rich in stereochemistry and functionality because of the variety of bis-amino acids that are capable of being incorporated during synthesis. [... | https://en.wikipedia.org/wiki/Spiroligomer |
A spiropyran is a type of photochromic organic chemical compound , characterized by their ability to reversibly switch between two structural forms—spiropyran and merocyanine—upon exposure to light or other external stimuli. This reversible transformation alters their optical and electronic properties, making them valu... | https://en.wikipedia.org/wiki/Spiropyran |
Spirotryprostatin B is an indolic alkaloid found in the Aspergillus fumigatus fungus that belongs to a class of naturally occurring 2,5-diketopiperazines . [1] Spirotryprostatin B and several other indolic alkaloids (including Spirotryprostatin A , as well as other tryprostatins and cyclotryprostatins) have been found ... | https://en.wikipedia.org/wiki/Spirotryprostatin_B |
In fair division problems, spite is a phenomenon that occurs when a player's value of an allocation decreases when one or more other players' valuation increases. Thus, other things being equal, a player exhibiting spite will prefer an allocation in which other players receive less than more (if more of the good is de... | https://en.wikipedia.org/wiki/Spite_(game_theory) |
Spitting is the act of forcibly ejecting saliva , sputum , nasal mucus and/or other substances from the mouth . The act is often done to get rid of unwanted or foul-tasting substances in the mouth, or to get rid of a large buildup of mucus . Spitting of small saliva droplets can also happen unintentionally during tal... | https://en.wikipedia.org/wiki/Spitting |
The Spitzenkörper ( German for 'pointed body', SPK ) is a structure found in fungal hyphae that is the organizing center for hyphal growth and morphogenesis . It consists of many small vesicles and is present in growing hyphal tips, during spore germination , and where branch formation occurs. Its position in the hypha... | https://en.wikipedia.org/wiki/Spitzenkörper |
In probability theory , Spitzer's formula or Spitzer's identity gives the joint distribution of partial sums and maximal partial sums of a collection of random variables. The result was first published by Frank Spitzer in 1956. [ 1 ] The formula is regarded as "a stepping stone in the theory of sums of independent rand... | https://en.wikipedia.org/wiki/Spitzer's_formula |
The Spitzer Space Telescope , formerly the Space Infrared Telescope Facility ( SIRTF ), was an infrared space telescope launched in 2003, that was deactivated when operations ended on 30 January 2020. [ 5 ] [ 9 ] Spitzer was the third space telescope dedicated to infrared astronomy, following IRAS (1983) and ISO (1995–... | https://en.wikipedia.org/wiki/Spitzer_Space_Telescope |
In fluid mechanics , a splash is a sudden disturbance to the otherwise quiescent free surface of a liquid (usually water ). The disturbance is typically caused by a solid object suddenly hitting the surface, although splashes can occur in which moving liquid supplies the energy. This use of the word is onomatopoeic ;... | https://en.wikipedia.org/wiki/Splash_(fluid_mechanics) |
Splash lubrication is a rudimentary form of lubrication found in early engines and transmissions. [ 1 ] Such engines could be external combustion engines (such as stationary steam engines ), or internal combustion engines (such as petrol, diesel or paraffin engines). [ 2 ]
An engine that uses splash lubrication requir... | https://en.wikipedia.org/wiki/Splash_lubrication |
In offshore construction , the splash zone is the transition from air to water when lowering heavy burdens into the sea. The overall efforts applied on the crane change dramatically when the load starts touching water, up to the point where it is completely submerged. Its buoyancy reduces the static mass that the crane... | https://en.wikipedia.org/wiki/Splash_zone |
Splat quenching is a metallurgical , metal morphing technique used for forming metals with a particular crystal structure by means of extremely rapid quenching , or cooling.
A typical technique for splat quenching involves casting molten metal by pouring it between two massive, cooled copper rollers that are constantl... | https://en.wikipedia.org/wiki/Splat_quenching |
Splenocytes are white blood cells that reside in the spleen and are involved in functions of the spleen, such as filtering blood and the immune response. [ 1 ]
Splenocytes consist of a variety of cell populations such as T and B lymphocytes, dendritic cells and macrophages, which have different immune functions. [ 2 ]... | https://en.wikipedia.org/wiki/Splenocyte |
Splenogonadal fusion is a rare congenital malformation that results from an abnormal connection between the primitive spleen and gonad during gestation . A portion of the splenic tissue then descends with the gonad. Splenogonadal fusion has been classified into two types: continuous, where there remains a connection b... | https://en.wikipedia.org/wiki/Splenogonadal_fusion |
SpliceInfo is a database for the four major alternative-splicing modes (exon skipping, 5'-alternative splicing, 3'-alternative splicing and intron retention) in the human genome . [ 1 ]
This resource appears to be no longer available. [ 2 ]
This Biological database -related article is a stub . You can help Wikipedia ... | https://en.wikipedia.org/wiki/SpliceInfo |
Splice is a cloud -based music creation platform founded by Matt Aimonetti and Steve Martocci which includes a sample library, audio plug-ins on a subscription basis, and integration with several digital audio workstations (DAWs) . The program is available for MacOS, Windows, iOS and Android .
The site and the MacOS ... | https://en.wikipedia.org/wiki/Splice_(platform) |
A splice site mutation is a genetic mutation that inserts , deletes or changes a number of nucleotides in the specific site at which splicing takes place during the processing of precursor messenger RNA into mature messenger RNA . Splice site consensus sequences that drive exon recognition are located at the very termi... | https://en.wikipedia.org/wiki/Splice_site_mutation |
A spliceosome is a large ribonucleoprotein (RNP) complex found primarily within the nucleus of eukaryotic cells . The spliceosome is assembled from small nuclear RNAs ( snRNA ) and numerous proteins. Small nuclear RNA (snRNA) molecules bind to specific proteins to form a small nuclear ribonucleoprotein complex (snRNP, ... | https://en.wikipedia.org/wiki/Spliceosome |
A splicing factor is a protein involved in the removal of introns from strings of messenger RNA , so that the exons can bind together; the process takes place in particles known as spliceosomes . Splicing factors regulate the binding of the snRNPs U1 and U2 to the 3' and 5' ends of the intron during splicing and can e... | https://en.wikipedia.org/wiki/Splicing_factor |
The split-Hopkinson pressure bar ( SHPB ), named after Bertram Hopkinson , sometimes also called a Kolsky bar , is an apparatus for testing the dynamic stress – strain response of materials.
The Hopkinson pressure bar was first suggested by Bertram Hopkinson in 1914 [ 1 ] as a way to measure stress pulse propagation i... | https://en.wikipedia.org/wiki/Split-Hopkinson_pressure_bar |
In algebra , a split-complex number (or hyperbolic number , also perplex number , double number ) is based on a hyperbolic unit j satisfying j 2 = 1 {\displaystyle j^{2}=1} , where j ≠ ± 1 {\displaystyle j\neq \pm 1} . A split-complex number has two real number components x and y , and is written z = x + y j . {\displa... | https://en.wikipedia.org/wiki/Split-complex_number |
Split-intein circular ligation of peptides and proteins ( SICLOPPS ) is a biotechnology technique that permits the creation of cyclic peptides . These peptides are produced by ribosomal protein synthesis , followed by an intein -like event that splices the protein into a loop. By contrast with the nonribosomal peptid... | https://en.wikipedia.org/wiki/Split-intein_circular_ligation_of_peptides_and_proteins |
A split-ring resonator ( SRR ) is an artificially produced structure common to metamaterials . Its purpose is to produce the desired magnetic susceptibility (magnetic response) in various types of metamaterials up to 200 terahertz .
Split ring resonators (SRRs) consist of a pair of concentric metallic rings, etched on... | https://en.wikipedia.org/wiki/Split-ring_resonator |
A split in phylogenetics is a bipartition of a set of taxa , and the smallest unit of information in unrooted phylogenetic trees : each edge of an unrooted phylogenetic tree represents one split, and the tree can be efficiently reconstructed from its set of splits. Moreover, when given several trees, the splits occurri... | https://en.wikipedia.org/wiki/Split_(phylogenetics) |
The split TEV technique [ 1 ] is a molecular method to monitor protein-protein interactions in living cells. It is based on the functional reconstitution of two previously inactive fragments derived from the NIa protease of the tobacco etch virus ( TEV protease ). These fragments, either an N-terminal (NTEV) or C-termi... | https://en.wikipedia.org/wiki/Split_TEV |
The split and pool (split-mix) synthesis is a method in combinatorial chemistry that can be used to prepare combinatorial compound libraries. It is a stepwise , highly efficient process realized in repeated cycles. The procedure makes it possible to prepare millions or even trillions of compounds as mixtures that can b... | https://en.wikipedia.org/wiki/Split_and_pool_synthesis |
The term split exact sequence is used in two different ways by different people. Some people mean a short exact sequence that right-splits (thus corresponding to a semidirect product) and some people mean a short exact sequence that left-splits (which implies it right-splits, and corresponds to a direct product). Thi... | https://en.wikipedia.org/wiki/Split_exact_sequence |
The split gene theory is a theory of the origin of introns , long non-coding sequences in eukaryotic genes between the exons . [ 1 ] [ 2 ] [ 3 ] The theory holds that the randomness of primordial DNA sequences would only permit small (< 600bp) open reading frames (ORFs), and that important intron structures and regulat... | https://en.wikipedia.org/wiki/Split_gene_theory |
For a given set of taxa , and a set of splits S on the taxa, usually together with a non-negative weighting, which may represent character changes distance, or may also have a more abstract interpretation, if the set of splits S is compatible, then it can be represented by an unrooted phylogenetic tree and each edge in... | https://en.wikipedia.org/wiki/Split_networks |
In particle physics , split supersymmetry is a proposal for physics beyond the Standard Model .
It was proposed separately in three papers. The first by James Wells in June 2003 in a more modest form that mildly relaxed the assumption about naturalness in the Higgs potential . In May 2004 Nima Arkani-Hamed and Savas ... | https://en.wikipedia.org/wiki/Split_supersymmetry |
In mathematics , the splitting principle is a technique used to reduce questions about vector bundles to the case of line bundles . In the theory of vector bundles, one often wishes to simplify computations, for example of Chern classes . Often computations are well understood for line bundles and for direct sums of li... | https://en.wikipedia.org/wiki/Splitting_principle |
Spodium , ( Latin for ashes or soot ) refers to burned bone (usually used for medical purposes), or the act of divination with ash.
Spodium may also refer to other types of ash, such as the scrapings from the inside of a furnace.
Spodium has a long history of medical usage, mentioned by Hippocrates and, for example, ... | https://en.wikipedia.org/wiki/Spodium |
A spoil tip (also called a boney pile , [ 1 ] culm bank , gob pile , waste tip [ 2 ] or bing ) [ 3 ] is a pile built of accumulated spoil – waste material removed during mining . [ 4 ] Spoil tips are not formed of slag , but in some areas, such as England and Wales, they are referred to as slag heaps . In Scotland the... | https://en.wikipedia.org/wiki/Spoil_tip |
A sponge bomb is a specialized device designed to seal the end of a tunnel. Small enough that it can be set by a single person, it is a non-explosive, chemical bomb that releases a burst of expanding foam that quickly hardens. [ 1 ] [ 2 ]
The sponge bomb was developed by the Israel Defense Forces (IDF) to address the ... | https://en.wikipedia.org/wiki/Sponge_bomb |
Sponge grounds , also known as sponge aggregations , are intertidal to deep-sea habitats formed by large accumulations of sponges ( glass sponges and/or demosponges ), often dominated by a few massive species. Sponge grounds were already reported more than 150 years ago, [ 1 ] but the habitat was first fully recognized... | https://en.wikipedia.org/wiki/Sponge_ground |
The sponge iron reaction (SIR) is a chemical process based on redox cycling of an iron-based contact mass, the first cycle is a conversion step between iron metal (Fe) and wuestite (FeO), the second cycle is a conversion step between wuestite (FeO) and magnetite (Fe 3 O 4 ). [ 1 ] In application, the SIT is used in the... | https://en.wikipedia.org/wiki/Sponge_iron_reaction |
Lacking an immune system , protective shell, or mobility, sponges have developed an ability to synthesize a variety of unusual compounds for survival. C- nucleosides isolated from Caribbean Cryptotethya crypta , were the basis for the synthesis of zidovudine ( AZT ), aciclovir ( Cyclovir ), cytarabine ( Depocyt ), and... | https://en.wikipedia.org/wiki/Sponge_isolates |
Spongin , a modified type of collagen protein , forms the fibrous skeleton of most organisms among the phylum Porifera , the sponges. It is secreted by sponge cells known as spongocytes. [ 1 ]
Spongin gives a sponge its flexibility. True spongin is found only in members of the class Demospongiae . [ 2 ] Its molecular ... | https://en.wikipedia.org/wiki/Spongin |
Spongy degeneration of the central nervous system , also known as Canavan's disease , Van Bogaert-Bertrand type or Aspartoacylase (AspA) deficiency , is a rare autosomal recessive neurodegenerative disorder . [ 1 ] It belongs to a group of genetic disorders known as leukodystrophies , [ 1 ] where the growth and mainten... | https://en.wikipedia.org/wiki/Spongy_degeneration_of_the_central_nervous_system |
Spontaneous absolute asymmetric synthesis is a chemical phenomenon that stochastically generates chirality based on autocatalysis and small fluctuations in the ratio of enantiomers present in a racemic mixture . [ 1 ] In certain reactions which initially do not contain chiral information , stochastically distributed en... | https://en.wikipedia.org/wiki/Spontaneous_absolute_asymmetric_synthesis |
Spontaneous combustion or spontaneous ignition is a type of combustion which occurs by self-heating (increase in temperature due to exothermic internal reactions ), followed by thermal runaway (self heating which rapidly accelerates to high temperatures) and finally, autoignition . [ 1 ] It is distinct from (but has si... | https://en.wikipedia.org/wiki/Spontaneous_combustion |
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