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Leon Francis Phillips (14 July 1935 – 24 September 2023) was a New Zealand physical chemist who specialised in the gas-liquid interface and atmospheric chemistry .
Born in Thames on 14 July 1935, Phillips was educated at Westport Technical College and Christchurch Boys' High School . [ 1 ] He studied at Canterbury Uni... | https://en.wikipedia.org/wiki/Leon_Phillips_(chemist) |
The Leonard Medal honors outstanding contributions to the science of meteoritics and closely allied fields. It is awarded by the Meteoritical Society . It was established in 1962 to honor the first President of the Society, Frederick C. Leonard . [ 1 ] | https://en.wikipedia.org/wiki/Leonard_Medal |
The Leonhard Euler Gold Medal (Золотая медаль имени Леонарда Эйлера) is a medal named after the Swiss, German, and Russian mathematician Leonhard Euler , awarded by the Отделением математических наук (Branch of Mathematical Sciences of the Russian Academy of Sciences ) for outstanding results in mathematics and physics... | https://en.wikipedia.org/wiki/Leonhard_Euler_Gold_Medal |
Leonidas Zervas ( Greek : Λεωνίδας Ζέρβας , pronounced [leoˈniðas ˈzervas] ; 21 May 1902 – 10 July 1980) was a Greek organic chemist who made seminal contributions in peptide chemical synthesis . [ 1 ] [ 2 ] [ 3 ] [ 4 ] Together with his mentor Max Bergmann they laid the foundations for the field in 1932 with their maj... | https://en.wikipedia.org/wiki/Leonidas_Zervas |
Leopold Ružička ForMemRS ( Croatian pronunciation: [rǔʒitʃka] ; [ 3 ] born Lavoslav Stjepan Ružička ; 13 September 1887 – 26 September 1976) [ 5 ] was a Croatian-Swiss scientist and joint winner of the 1939 Nobel Prize in Chemistry "for his work on polymethylenes and higher terpenes " [ 6 ] [ 7 ] "including the first c... | https://en.wikipedia.org/wiki/Leopold_Ružička |
Leopold Blaschka (27 May 1822 – 3 July 1895) and his son Rudolf Blaschka (17 June 1857 – 1 May 1939) were glass artists from Dresden , Germany . They were known for their production of biological and botanical models, including glass sea creatures and Harvard University 's Glass Flowers .
The Blaschka family's roots ... | https://en.wikipedia.org/wiki/Leopold_and_Rudolf_Blaschka |
The Leopold matrix is a qualitative environmental impact assessment method developed in 1971 by Luna Leopold and collaborators for the USGS . [ 1 ] It is used to identify and assign numerical weightings to potential environmental impacts of proposed projects on the environment . [ 1 ] It came as a response to the Natio... | https://en.wikipedia.org/wiki/Leopold_matrix |
Lepidiota stigma , also known as sugarcane white grub, [ 2 ] is a species of insect native to Southeast Asia. The species is known to attack sugarcane fields in the region. [ 3 ]
This Melolonthinae article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Lepidiota_stigma |
Lepidium peruvianum
Lepidium meyenii , known as maca or Peruvian ginseng , is an edible herbaceous biennial plant of the family Brassicaceae that is native to South America in the high Andes mountains of Peru and Bolivia . It was rediscovered for commercial purposes at the Meseta de Bombón plateau close to Lake Junin ... | https://en.wikipedia.org/wiki/Lepidium_meyenii |
A leptocephalus (meaning "slim head" [ 1 ] ) is the flat and transparent larva of eels and other members of the superorder Elopomorpha . This is one of the most diverse groups of teleosts , containing 801 species in 4 orders, 24 families, and 156 genera. This group is thought to have arisen in the Cretaceous period ove... | https://en.wikipedia.org/wiki/Leptocephalus |
In physical cosmology , leptogenesis is the generic term for hypothetical physical processes that produced an asymmetry between leptons and antileptons in the very early universe , resulting in the present-day dominance of leptons over antileptons. In the currently accepted Standard Model , lepton number is nearly cons... | https://en.wikipedia.org/wiki/Leptogenesis |
In particle physics , lepton number (historically also called lepton charge ) [ 1 ] is a conserved quantum number representing the difference between the number of leptons and the number of antileptons in an elementary particle reaction. [ 2 ] Lepton number is an additive quantum number , so its sum is preserved in int... | https://en.wikipedia.org/wiki/Lepton_number |
Leptosin is an aurone glycoside derived from kusrunt 's leaves. [ 1 ]
This biochemistry article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Leptosin |
The leptotene stage , also known as leptonema, is the first of five substages of prophase I during meiosis , the specialized cell division that reduces the chromosome number by half to produce haploid gametes in sexually reproducing organisms.
The term "leptonema" derives from Greek words meaning "thin threads". [ 1 ]... | https://en.wikipedia.org/wiki/Leptotene_stage |
The Leray projection , named after Jean Leray , is a linear operator used in the theory of partial differential equations , specifically in the fields of fluid dynamics . Informally, it can be seen as the projection on the divergence-free vector fields. It is used in particular to eliminate both the pressure term and t... | https://en.wikipedia.org/wiki/Leray_projection |
In mathematics , the Leray–Schauder degree is an extension of the degree of a base point preserving continuous map between spheres ( S n , ∗ ) → ( S n , ∗ ) {\displaystyle (S^{n},*)\to (S^{n},*)} or equivalently to boundary-sphere-preserving continuous maps between balls ( B n , S n − 1 ) → ( B n , S n − 1 ) {\displays... | https://en.wikipedia.org/wiki/Leray–Schauder_degree |
The Lerche–Newberger , or Newberger , sum rule , discovered by B. S. Newberger in 1982, [ 1 ] [ 2 ] [ 3 ] finds the sum of certain infinite series involving Bessel functions J α of the first kind .
It states that if μ is any non-integer complex number , γ ∈ ( 0 , 1 ] {\displaystyle \scriptstyle \gamma \in (0,1]} , and... | https://en.wikipedia.org/wiki/Lerche–Newberger_sum_rule |
The Lerner symmetry theorem is a result used in international trade theory, which states that an ad valorem import tariff (a percentage of value or an amount per unit) will have the same effects as an export tax. The theorem is based on the observation that the effect on relative prices is the same regardless of which ... | https://en.wikipedia.org/wiki/Lerner_symmetry_theorem |
Leroy "Lee" Edward Hood (born October 10, 1938) is an American biologist who has served on the faculties at the California Institute of Technology (Caltech) and the University of Washington . [ 2 ] Hood has developed ground-breaking scientific instruments which made possible major advances in the biological sciences an... | https://en.wikipedia.org/wiki/Leroy_Hood |
The Les Houches Accords are agreements between particle physicists to standardize the interface between the matrix element programs and the event generators used to calculate different quantities. The original accord was initially formed in 2001, at a conference in Les Houches , in the French Alps , before it was subse... | https://en.wikipedia.org/wiki/Les_Houches_Accords |
Lesley-Ann L. Dupigny-Giroux is the Vermont State Climatologist , president of the American Association of State Climatologists, [ 1 ] Inc., and a professor of Geography at the University of Vermont . [ 2 ]
Dupigny-Giroux was born in Trinidad . Her exploration of the small island gave her an early appreciation for pla... | https://en.wikipedia.org/wiki/Lesley-Ann_L._Dupigny-Giroux |
Sir Leslie Fowden FRS [ 1 ] (1925–2008) was a British organic chemist and plant scientist , notable for his pioneering research on phytochemistry and plant amino acids , as well as for his role in promoting agricultural research in the UK.
Leslie Fowden was born at Birch Hill House, Wardle , Rochdale on 13 October 192... | https://en.wikipedia.org/wiki/Leslie_Fowden |
Leslie Hicks is an American associate professor of analytical chemistry at the University of North Carolina at Chapel Hill . Her work primarily focuses on the study of proteomics and protein post-translational modifications using mass spectrometry , and identifying biologically active peptides in plants. [ 1 ]
Hicks e... | https://en.wikipedia.org/wiki/Leslie_M._Hicks |
The reflected binary code ( RBC ), also known as reflected binary ( RB ) or Gray code after Frank Gray , is an ordering of the binary numeral system such that two successive values differ in only one bit (binary digit).
For example, the representation of the decimal value "1" in binary would normally be " 001 ", and "... | https://en.wikipedia.org/wiki/Leslie–Russell_code |
The less-than sign is a mathematical symbol that denotes an inequality between two values. The widely adopted form of two equal-length strokes connecting in an acute angle at the left, < , has been found in documents dated as far back as the 1560s. In mathematical writing, the less-than sign is typically placed between... | https://en.wikipedia.org/wiki/Less-than_sign |
LessWrong (also written Less Wrong ) is a community blog and forum focused on discussion of cognitive biases , philosophy , psychology , economics , rationality , and artificial intelligence , among other topics. [ 1 ] [ 2 ] It is associated with the rationalist community .
LessWrong describes itself as an online foru... | https://en.wikipedia.org/wiki/LessWrong |
The Lessepsian migration (or Erythrean invasion ) is the migration of marine species along the Suez Canal , usually from the Red Sea to the Mediterranean Sea , and more rarely in the opposite direction. When the canal was completed in 1869, fish , crustaceans , mollusks , and other marine animals and plants were expose... | https://en.wikipedia.org/wiki/Lessepsian_migration |
In anatomy the Lesser Triangle is a region contained within the Submandibular triangle . Its boundaries are the Hypoglossal Nerve , and the Anterior and Posterior belly of the Digastric muscle . This triangle was named after a German surgeon named Ladislaus Leon Lesser , who lived from 1846 to 1925 [ 1 ]
This human mu... | https://en.wikipedia.org/wiki/Lesser_Triangle |
In toxicology , the lethal dose ( LD ) is an indication of the lethal toxicity of a given substance or type of radiation . Because resistance varies from one individual to another, the "lethal dose" represents a dose (usually recorded as dose per kilogram of subject body weight) at which a given percentage of subjects ... | https://en.wikipedia.org/wiki/Lethal_dose |
Lethal synthesis , or suicide metabolism , [ 1 ] is the biosynthesis of a toxin from a precursor which is not itself toxic, such as the synthesis of fluorocitrate from fluoroacetate or the synthesis of methylglyoxal from glycerol . [ 2 ] [ 3 ] [ 4 ]
The term was first publicised by Rudolph Peters in his Croonian Lectu... | https://en.wikipedia.org/wiki/Lethal_synthesis |
María Leticia Carigi Delgado is a Venezuelan astronomer specializing in cosmochemistry , including the overall metallicity of galaxies and galactic halos , [ 1 ] and the evolution of galaxies . [ 2 ] She works in Mexico as a researcher and professor in the Institute of Astronomy of the National Autonomous University of... | https://en.wikipedia.org/wiki/Leticia_Carigi |
Leticia González Herrero (born in Madrid) is a theoretical chemist, known for her work on molecular excited states, especially ultrafast dynamics of DNA nucleobases [ 1 ] and highly accurate simulations of transition metal complexes. [ 2 ]
Leticia González was born in Madrid , Spain and studied chemistry from 1989 to ... | https://en.wikipedia.org/wiki/Leticia_González |
Leticia Myriam Torres Guerra (born September 9, 1955) is a Mexican chemist.
Her research work focuses on the development and synthesis of advanced materials such as semiconductors and their application as powders and films in renewable energy and sustainable decontamination projects.
In 2005, she was appointed head o... | https://en.wikipedia.org/wiki/Leticia_Myriam_Torres_Guerra |
Letitia Eva Takyibea Obeng FGA (10 January 1925 – 23 March 2023) was the first Ghanaian woman to obtain a degree in zoology and the first to be awarded a doctorate . [ 1 ] She is described as "the grandmother of female scientists in Ghana". [ 2 ]
Letitia Obeng was born at Anum in the Eastern Region on 10 January 1925.... | https://en.wikipedia.org/wiki/Letitia_Obeng |
LetterWise and WordWise were predictive text entry systems developed by Eatoni Ergonomics (Eatoni) for handheld devices with ambiguous keyboards / keypads, typically non-smart traditional cellphones and portable devices with keypads. All patents covering those systems have expired. [ citation needed ] LetterWise used a... | https://en.wikipedia.org/wiki/LetterWise |
Galileo Galilei 's " Letter to Benedetto Castelli " (1613) was his first statement on the authority of scripture and the Catholic Church in matters of scientific enquiry. [ 1 ] : 66 In a series of bold and innovative arguments, he undermined the claims for Biblical authority which the opponents of Copernicus used. The ... | https://en.wikipedia.org/wiki/Letter_to_Benedetto_Castelli |
A lettering guide template is a special type of template used to write uniform characters. It consists of a sheet of plastic or other material with cut-outs of letters, numbers, and other shapes used especially for creating technical drawings. For decades they have been essential for lettering a drawing nameplate so te... | https://en.wikipedia.org/wiki/Lettering_guide |
Letters in Organic Chemistry (usually abbreviated as Lett. Org. Chem. ), is a peer-reviewed monthly scientific journal , published since 2004 by Bentham Science Publishers . [ 1 ] Letters in Organic Chemistry is indexed in: Chemical Abstracts Service (CAS), EBSCOhost , British Library , PubMed , Web of Science , and Sc... | https://en.wikipedia.org/wiki/Letters_in_Organic_Chemistry |
Letters on Sunspots ( Istoria e Dimostrazioni intorno alle Macchie Solari ) was a pamphlet written by Galileo Galilei in 1612 and published in Rome by the Accademia dei Lincei in 1613. In it, Galileo outlined his recent observation of dark spots on the face of the Sun. [ 1 ] His claims were significant in undermining t... | https://en.wikipedia.org/wiki/Letters_on_Sunspots |
The Letts nitrile synthesis is a chemical reaction of aromatic carboxylic acids with metal thiocyanates to form nitriles . The reaction includes the loss of carbon dioxide and potassium hydrosulfide . The polar basic substitution reaction was discovered in 1872 by Edmund A. Letts . [ 1 ] [ 2 ]
In 1857 Hugo Schiff obse... | https://en.wikipedia.org/wiki/Letts_nitrile_synthesis |
Leu-enkephalin is an endogenous opioid peptide neurotransmitter with the amino acid sequence Tyr-Gly-Gly-Phe-Leu that is found naturally in the brains of many animals, including humans. [ 2 ] [ 3 ] It is one of the two forms of enkephalin ; the other is met-enkephalin . [ 2 ] The tyrosine residue at position 1 is thoug... | https://en.wikipedia.org/wiki/Leu-enkephalin |
Leuckart's law is an empirical law in zoology that states that the size of the eye of an animal is related to its maximum speed of movement; fast-moving animals have larger eyes, after allowing for the effects of body mass . The hypothesis dates from 1876, [ 1 ] and in older literature is usually referred to as Leuckar... | https://en.wikipedia.org/wiki/Leuckart's_law |
The Leuckart reaction is the chemical reaction that converts aldehydes or ketones to amines . The reaction is an example of reductive amination . [ 1 ] The reaction, named after Rudolf Leuckart , uses either ammonium formate or formamide as the nitrogen donor and reducing agent . It requires high temperatures, usually ... | https://en.wikipedia.org/wiki/Leuckart_reaction |
The Leuckart thiophenol reaction is the decomposition of a diazoxanthate, by gentle warming in a slightly acidic cuprous medium, to its corresponding aryl xanthates which give aryl thiols on alkaline hydrolysis and aryl thioethers on further warming. [ 1 ]
This reaction was first reported by Rudolf Leuckart in 1890. [... | https://en.wikipedia.org/wiki/Leuckart_thiophenol_reaction |
Leucopelargonidin is a colorless chemical compound related to leucoanthocyanins . It can be found in Albizia lebbeck (East Indian walnut), in the fruit of Anacardium occidentale (Cashew), in the fruit of Areca catechu (Areca nut), in the fruit of Hydnocarpus wightianus (Hindi Chaulmoogra), in the rhizome of Rumex hymen... | https://en.wikipedia.org/wiki/Leucopelargonidin |
Leucyl aminopeptidases ( EC 3.4.11.1 , leucine aminopeptidase , LAPs , leucyl peptidase , peptidase S , cytosol aminopeptidase , cathepsin III , L-leucine aminopeptidase , leucinaminopeptidase , leucinamide aminopeptidase , FTBL proteins , proteinates FTBL , aminopeptidase II , aminopeptidase III , aminopeptidase I ) a... | https://en.wikipedia.org/wiki/Leucyl_aminopeptidase |
A leukocidin is a type of cytotoxin created by some types of bacteria ( Staphylococcus ). It is a type of pore-forming toxin . Leukocidins fall into the category of bacterial invasin . Invasins are enzymatic secretions that help bacteria invade the host tissue to which they are attached. Although similar to exotoxins ,... | https://en.wikipedia.org/wiki/Leukocidin |
Leukocyte-promoting factor , more commonly known as leukopoietin , is a category of substances produced by neutrophils when they encounter a foreign antigen . Leukopoietin stimulates the bone marrow to increase the rate of leukopoiesis in order to replace the neutrophils that will inevitably be lost when they begin to ... | https://en.wikipedia.org/wiki/Leukocyte-promoting_factor |
The leukocyte immunoglobulin-like receptors (LILR) are a family of receptors possessing extracellular immunoglobulin domains . [ 1 ] They are also known as CD85 , ILTs and LIR, and can exert immunomodulatory effects on a wide range of immune cells. [ 2 ] The human genes encoding these receptors are found in a gene clus... | https://en.wikipedia.org/wiki/Leukocyte_immunoglobulin-like_receptors |
Leukotrienes are a family of eicosanoid inflammatory mediators produced in leukocytes by the oxidation of arachidonic acid (AA) and the essential fatty acid eicosapentaenoic acid (EPA) by the enzyme arachidonate 5-lipoxygenase . [ 1 ] [ 2 ] [ 3 ]
Leukotrienes use lipid signaling to convey information to either the cel... | https://en.wikipedia.org/wiki/Leukotriene |
Leukotriene D 4 ( LTD 4 ) is one of the leukotrienes . Its main function in the body is to induce the contraction of smooth muscle , resulting in bronchoconstriction and vasoconstriction . It also increases vascular permeability . LTD 4 is released by basophils . Other leukotrienes that function in a similar manner are... | https://en.wikipedia.org/wiki/Leukotriene_D4 |
The leukotriene ( LT ) receptors are G protein-coupled receptors that bind and are activated by the leukotrienes . They include the following proteins :
The recently elucidated CysLT E , represented by GPR99/OXGR1 , may constitute a third CysLTR. [ 1 ]
This biochemistry article is a stub . You can help Wikipedia by e... | https://en.wikipedia.org/wiki/Leukotriene_receptor |
Levacetylmethadol ( INN ), levomethadyl acetate ( USAN ), OrLAAM (trade name) or levo-α-acetylmethadol ( LAAM ) [ 1 ] [ 2 ] is a synthetic opioid similar in structure to methadone . It has a long duration of action due to its active metabolites .
LAAM is indicated as a second-line treatment for the treatment and manag... | https://en.wikipedia.org/wiki/Levacetylmethadol |
Levamlodipine ( INN ), also known as levoamlodipine or S -amlodipine is a pharmacologically active enantiomer of amlodipine . [ 1 ] Amlodipine belongs to the dihydropyridine group of calcium channel blocker used as an antihypertensive and antianginal agent. [ 2 ] It was approved by the U.S. FDA in December 2019 and is ... | https://en.wikipedia.org/wiki/Levamlodipine |
Levdobutamine ( INN Tooltip International Nonproprietary Name ; developmental code name LY-206243 ; also known as ( S )-dobutamine ) is a sympathomimetic , selective β 1 -adrenergic receptor agonist , and positive inotrope which was never marketed. [ 1 ] [ 2 ] It is the ( S )- enantiomer of dobutamine . [ 1 ]
This dru... | https://en.wikipedia.org/wiki/Levdobutamine |
In science and engineering , a power level and a field level (also called a root-power level ) are logarithmic magnitudes of certain quantities referenced to a standard reference value of the same type.
The type of level and choice of units indicate the scaling of the logarithm of the ratio between the quantity and it... | https://en.wikipedia.org/wiki/Level_(logarithmic_quantity) |
A level crossing is an intersection where a railway line crosses a road, path , or (in rare situations) airport runway, at the same level, [ 1 ] as opposed to the railway line or the road etc. crossing over or under using an overpass or tunnel . The term also applies when a light rail line with separate right-of-way or... | https://en.wikipedia.org/wiki/Level_crossing |
Level of invention (or degree of inventiveness , or level of solution , or rank of solution , or rank of invention ) is a relative degree of changes to the previous system (or solution) in the result of solution of inventive problem (one containing a contradiction ). Term was defined and introduced by TRIZ author G. S.... | https://en.wikipedia.org/wiki/Level_of_invention |
Level repulsion is the quantum mechanical equivalent to a repulsion effect in oscillators . [ 1 ] A system of two coupled oscillators has two natural frequencies. As the coupling strength between the oscillators increases, the lower frequency decreases and the higher increases. [ 2 ]
This quantum mechanics -related ar... | https://en.wikipedia.org/wiki/Level_repulsion |
A level spreader is an erosion control device designed to reduce water pollution by mitigating the impact of high-velocity stormwater surface runoff . It is used both on construction sites and for permanent applications such as drainage for roads and highways . The device reduces the energy level in high-velocity flow... | https://en.wikipedia.org/wiki/Level_spreader |
A level staff , also called levelling rod , is a graduated wooden or aluminium rod, used with a levelling instrument to determine the difference in height between points or heights of points above a vertical datum .
When used for stadiametric rangefinding , the level staff is called a stadia rod .
Levelling rods can b... | https://en.wikipedia.org/wiki/Level_staff |
Levelling or leveling ( American English ; see spelling differences ) is a branch of surveying , the object of which is to establish or verify or measure the height of specified points relative to a datum. It is widely used in geodesy and cartography to measure vertical position with respect to a vertical datum , and i... | https://en.wikipedia.org/wiki/Levelling |
A level staff , also called levelling rod , is a graduated wooden or aluminium rod, used with a levelling instrument to determine the difference in height between points or heights of points above a vertical datum .
When used for stadiametric rangefinding , the level staff is called a stadia rod .
Levelling rods can b... | https://en.wikipedia.org/wiki/Levelling_rod |
Biological organization is the organization of complex biological structures and systems that define life using a reductionistic approach. [ 1 ] The traditional hierarchy, as detailed below, extends from atoms to biospheres . The higher levels of this scheme are often referred to as an ecological organizational concept... | https://en.wikipedia.org/wiki/Levels_of_organization_(ecology) |
Levenshtein coding is a universal code encoding the non-negative integers developed by Vladimir Levenshtein . [ 1 ] [ 2 ]
The code of zero is "0"; to code a positive number :
The code begins:
To decode a Levenshtein-coded integer:
The Levenshtein code of a positive integer is always one bit longer than the Elias om... | https://en.wikipedia.org/wiki/Levenshtein_coding |
In information theory , linguistics , and computer science , the Levenshtein distance is a string metric for measuring the difference between two sequences. The Levenshtein distance between two words is the minimum number of single-character edits (insertions, deletions or substitutions) required to change one word int... | https://en.wikipedia.org/wiki/Levenshtein_distance |
A Levenspiel plot is a plot used in chemical reaction engineering to determine the required volume of a chemical reactor given experimental data on the chemical reaction taking place in it. It is named after the late chemical engineering professor Octave Levenspiel .
For a continuous stirred-tank reactor (CSTR), the f... | https://en.wikipedia.org/wiki/Levenspiel_plot |
In chemistry , the lever rule is a formula used to determine the mole fraction ( x i ) or the mass fraction ( w i ) of each phase of a binary equilibrium phase diagram . It can be used to determine the fraction of liquid and solid phases for a given binary composition and temperature that is between the liquidus and so... | https://en.wikipedia.org/wiki/Lever_rule |
In petroleum engineering , the Leverett J -function is a dimensionless function of water saturation describing the capillary pressure , [ 1 ]
where S w {\displaystyle S_{w}} is the water saturation measured as a fraction, p c {\displaystyle p_{c}} is the capillary pressure (in pascal ), k {\displaystyle k} is the perm... | https://en.wikipedia.org/wiki/Leverett_J-function |
The Leverhulme Centre for the Future of Intelligence ( CFI ) is an interdisciplinary research centre within the University of Cambridge that studies artificial intelligence . [ 1 ] [ 2 ] It is funded by the Leverhulme Trust . [ 3 ]
The Centre brings together academics from the fields of computer science, philosophy, s... | https://en.wikipedia.org/wiki/Leverhulme_Centre_for_the_Future_of_Intelligence |
Levetiracetam , sold under the brand name Keppra among others, is a novel antiepileptic drug [ 7 ] ( medication ) used to treat epilepsy . [ 8 ] It is used for partial-onset , myoclonic , or tonic–clonic seizures, [ 7 ] and is taken either by mouth as an immediate or extended release formulation or by injection into a ... | https://en.wikipedia.org/wiki/Levetiracetam |
In theoretical computer science and mathematics , especially in the area of combinatorics on words , the Levi lemma states that, for all strings u , v , x and y , if uv = xy , then there exists a string w such that either
or
That is, there is a string w that is "in the middle", and can be grouped to one side or the o... | https://en.wikipedia.org/wiki/Levi's_lemma |
In mathematics, the Levi-Civita field , named after Tullio Levi-Civita , [ 1 ] is a non-Archimedean ordered field ; i.e., a system of numbers containing infinite and infinitesimal quantities. It is usually denoted R {\displaystyle {\mathcal {R}}} .
Each member a {\displaystyle a} can be constructed as a formal series ... | https://en.wikipedia.org/wiki/Levi-Civita_field |
A Levich constant (B) is often used in order to simplify the Levich equation . [ 1 ] Furthermore, B is readily extracted from rotating disk electrode experimental data.
The B can be defined as: [ 2 ]
B = ( 0.620 ) n F A D 2 3 v − 1 6 C {\displaystyle B=(0.620)nFAD^{\frac {2}{3}}v^{\frac {-1}{6}}C}
where
This electr... | https://en.wikipedia.org/wiki/Levich_constant |
The Levich equation models the diffusion and solution flow conditions around a rotating disk electrode (RDE). It is named after Veniamin Grigorievich Levich who first developed an RDE as a tool for electrochemical research. It can be used to predict the current observed at an RDE, in particular, the Levich equation giv... | https://en.wikipedia.org/wiki/Levich_equation |
The Levington Research Station is a fertiliser research institute in Suffolk .
It was opened by Fisons in 1957. [ 2 ] It received a Civic Trust Award in 1959. [ 3 ] Fisons sold the property in 1981.
Around three hundred people worked at the site and it was one of Europe's largest research institutes in the field of f... | https://en.wikipedia.org/wiki/Levington_Research_Station |
In mathematics , Levinson's inequality is the following inequality, due to Norman Levinson , involving positive numbers. Let a > 0 {\displaystyle a>0} and let f {\displaystyle f} be a given function having a third derivative on the range ( 0 , 2 a ) {\displaystyle (0,2a)} , and such that
for all x ∈ ( 0 , 2 a ) {\dis... | https://en.wikipedia.org/wiki/Levinson's_inequality |
Levisoprenaline ( INN Tooltip International Nonproprietary Name ) is a sympathomimetic , β-adrenergic receptor agonist , and bronchodilator which was never marketed. [ 1 ] [ 2 ] [ 3 ] It is the levorotatory or ( R )- enantiomer of isoprenaline . [ 3 ]
This drug article relating to the cardiovascular system is a stub .... | https://en.wikipedia.org/wiki/Levisoprenaline |
Levitated optomechanics is a field of mesoscopic physics which deals with the mechanical motion of mesoscopic particles which are optically or electrically or magnetically levitated . Through the use of levitation, it is possible to decouple the particle's mechanical motion exceptionally well from the environment. This... | https://en.wikipedia.org/wiki/Levitated_optomechanics |
Wijsman convergence is a variation of Hausdorff convergence suitable for work with unbounded sets .
Intuitively, Wijsman convergence is to convergence in the Hausdorff metric as pointwise convergence is to uniform convergence .
The convergence was defined by Robert Wijsman . [ 1 ] The same definition was used earlier ... | https://en.wikipedia.org/wiki/Levi–Lechicki_theorem |
Levoamphetamine [ note 1 ] is a stimulant medication which is used in the treatment of certain medical conditions . [ 10 ] It was previously marketed by itself under the brand name Cydril , but is now available only in combination with dextroamphetamine in varying ratios under brand names like Adderall and Evekeo . [ 1... | https://en.wikipedia.org/wiki/Levoamphetamine |
Levobetaxolol is a drug used to lower the pressure in the eye in treating conditions such as glaucoma . It is marketed as a 0.25 or 0.5% ophthalmic solution of levobetaxolol hydrochloride under the trade name Betaxon . Levobetaxolol is a beta-adrenergic receptor inhibitor ( beta blocker ).
It is indicated for intrao... | https://en.wikipedia.org/wiki/Levobetaxolol |
(-)-bupivacaine
Levobupivacaine ( rINN ) is a local anaesthetic drug indicated for minor and major surgical anaesthesia and pain management . It is a long-acting amide -type local anaesthetic that blocks nerve impulses by inhibiting sodium ion influx into the nerve cells . [ 1 ] Levobupivacaine is the S- enantiomer of... | https://en.wikipedia.org/wiki/Levobupivacaine |
Levocetirizine , sold under the brand name Xyzal , among others, is a second-generation antihistamine used for the treatment of allergic rhinitis (hay fever) and long-term hives of unclear cause. [ 3 ] It is less sedating than older antihistamines. [ 4 ] It is taken by mouth . [ 3 ]
Common side effects include sleepin... | https://en.wikipedia.org/wiki/Levocetirizine |
Levodropropizine is a cough suppressant . It is the levo isomer of dropropizine . It acts as a peripheral antitussive, with no action in the central nervous system . [ 1 ] It does not cause side effects such as constipation or respiratory depression which can be produced by opioid antitussives such as codeine and its d... | https://en.wikipedia.org/wiki/Levodropropizine |
Levofenfluramine ( INN ), or (−)-3-trifluoromethyl- N -ethylamphetamine , also known as (−)-fenfluramine or ( R )-fenfluramine , is a drug of the amphetamine family that, itself (i.e., in enantiopure form ), was never marketed alone. [ 1 ] It is the levorotatory enantiomer of fenfluramine , the racemic form of the comp... | https://en.wikipedia.org/wiki/Levofenfluramine |
Levofloxacin , sold under the brand name Levaquin among others, is a broad-spectrum antibiotic of the fluoroquinolone drug class. [ 5 ] It is the left-handed isomer of the medication ofloxacin . [ 5 ] [ 6 ] It is used to treat a number of bacterial infections including acute bacterial sinusitis , pneumonia , H. pylori ... | https://en.wikipedia.org/wiki/Levofloxacin |
Levoglucosan (C 6 H 10 O 5 ) is an organic compound with a six- carbon ring structure formed from the pyrolysis of carbohydrates, such as starch and cellulose . [ 1 ] As a result, levoglucosan is often used as a chemical tracer for biomass burning in atmospheric chemistry studies, particularly with respect to airborne ... | https://en.wikipedia.org/wiki/Levoglucosan |
Levoketoconazole , sold under the brand name Recorlev , is a steroidogenesis inhibitor that is used for the treatment of Cushing's syndrome . [ 2 ] [ 3 ] [ 4 ] [ 5 ] Levoketoconazole was approved for medical use in the United States in December 2021. [ 6 ] [ 7 ]
Levoketoconazole is the levorotatory or (2 S ,4 R ) enan... | https://en.wikipedia.org/wiki/Levoketoconazole |
Levomethamphetamine [ a ] ( INN : levmetamfetamine ) is an optical isomer of methamphetamine primarily used as a topical nasal decongestant . [ 2 ] Levomethamphetamine is used to treat nasal congestion from allergies and the common cold . [ 7 ] It was first used medically as decongestant beginning in 1958 and has been ... | https://en.wikipedia.org/wiki/Levomethamphetamine |
Levomethorphan (LVM) ( INN , BAN ) is an opioid analgesic of the morphinan family that has never been marketed. [ 2 ] It is the L - stereoisomer of racemethorphan (methorphan). [ 2 ] The effects of the two isomers of racemethorphan are quite different, with dextromethorphan (DXM) being an antitussive at low doses and a... | https://en.wikipedia.org/wiki/Levomethorphan |
Levomilnacipran , sold under the brand name Fetzima , is an antidepressant , used for the treatment of major depressive disorder in adults. [ 4 ] It is the levorotatory enantiomer of milnacipran , and has similar effects and pharmacology , acting as a serotonin–norepinephrine reuptake inhibitor . [ 7 ] [ 8 ]
Levomilna... | https://en.wikipedia.org/wiki/Levomilnacipran |
Levonadifloxacin (trade name Emrok ) is an antibiotic drug of the fluoroquinolone class. [ 1 ] [ 2 ] Chemically, it is the ( S )- enantiomer of the racemic drug nadifloxacin .
It is approved in India for the treatment of skin and soft tissue infections of Gram-positive bacteria . [ 3 ] It is also being studied for pot... | https://en.wikipedia.org/wiki/Levonadifloxacin |
Levonorgestrel is a hormonal medication used in a number of birth control methods. [ 7 ] [ 11 ] It is combined with an estrogen to make combination birth control pills . [ 12 ] As an emergency birth control , sold under the brand names Plan B One-Step and Julie , among others, it is useful within 72 hours of unprotecte... | https://en.wikipedia.org/wiki/Levonorgestrel |
Levonorgestrel acetate ( LNG-A ), or levonorgestrel 17β-acetate , also known as 3-ketonorgestimate , is a progestin which was never marketed. [ 1 ] [ 2 ] [ 3 ] [ 4 ] It is a progestogen ester and is the C17β acetate ester and a prodrug of levonorgestrel . [ 2 ] Norgestimate is the C3 oxime of LNG-A. [ 1 ] [ 5 ] The dru... | https://en.wikipedia.org/wiki/Levonorgestrel_acetate |
Levorphanol (brand name Levo-Dromoran ) is an opioid medication used to treat moderate to severe pain . [ 1 ] [ 3 ] [ 4 ] It is the levorotatory enantiomer of the compound racemorphan . Its dextrorotatory counterpart is dextrorphan .
It was first described in Germany in 1946. [ 5 ] The drug has been in medical use in ... | https://en.wikipedia.org/wiki/Levorphanol |
Levosalbutamol , also known as levalbuterol , is a β 2 -adrenergic receptor agonist used in the treatment of bronchospasm. [ 1 ] Levosalbutamol is the ( R )-(−)- enantiomer of its prototype drug salbutamol . [ citation needed ]
Levosalbutamol is indicated for the treatment or prevention of bronchospasm in people aged ... | https://en.wikipedia.org/wiki/Levosalbutamol |
Levosulpiride , sold under the brand names Dislep and Sulpepta among others, is a dopamine antagonist medication which is used in the treatment of psychotic disorders like schizophrenia , major depressive disorder , nausea and vomiting , and gastroparesis . [ 1 ] [ 2 ] [ 3 ] [ 4 ] It is taken by mouth .
It is a select... | https://en.wikipedia.org/wiki/Levosulpiride |
Levoverbenone is an expectorant . It is the (−)- isomer of verbenone . [ 1 ]
This drug article relating to the respiratory system is a stub . You can help Wikipedia by expanding it .
This stereochemistry article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Levoverbenone |
The Levi–Mises equations (also called flow rules ) describe the relationship between stress and strain for an ideal plastic solid where the elastic strains are negligible.
The generalized Levy–Mises equation can be written as:
This applied mathematics –related article is a stub . You can help Wikipedia by expanding i... | https://en.wikipedia.org/wiki/Levy–Mises_equations |
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