text stringlengths 11 320k | source stringlengths 26 161 |
|---|---|
Ampliphase is the brand name of an amplitude modulation system achieved by summing phase modulated carriers .
This modulation and amplifier technology family was originally marketed by RCA for AM broadcast transmitters. The Ampliphase system was not developed by RCA, but by McClatchy Broadcasting in the mid-1930s. McC... | https://en.wikipedia.org/wiki/Ampliphase |
The amplitude of a periodic variable is a measure of its change in a single period (such as time or spatial period ). The amplitude of a non-periodic signal is its magnitude compared with a reference value. There are various definitions of amplitude (see below), which are all functions of the magnitude of the differenc... | https://en.wikipedia.org/wiki/Amplitude |
In the theory of dynamical systems , amplitude death is complete cessation of oscillations . The system can be in a state of either periodic motion or chaotic motion before it goes to amplitude death. [ 1 ] A dynamical system can go to amplitude death because of change in intrinsic parameters of the system or its inter... | https://en.wikipedia.org/wiki/Amplitude_death |
Amplitude of Low Frequency Fluctuations ( ALFF ) and fractional Amplitude of Low Frequency Fluctuations ( f/ALFF ) are neuroimaging methods used to measure spontaneous fluctuations in BOLD-fMRI signal intensity for a given region in the resting brain . Electrophysiological studies suggest that low-frequency oscillation... | https://en.wikipedia.org/wiki/Amplitude_of_low_frequency_fluctuations |
Amplitude panning is a technique in sound engineering where the same sound signal is applied to a number of loudspeakers in different directions equidistant from the listener. Then, a virtual source appears to a direction that is dependent on amplitudes of the loudspeakers. The direction may not coincide with any physi... | https://en.wikipedia.org/wiki/Amplitude_panning |
In mathematics and theoretical physics (especially twistor string theory ), an amplituhedron is a geometric structure introduced in 2013 by Nima Arkani-Hamed and Jaroslav Trnka. It enables simplified calculation of particle interactions in some quantum field theories. In planar N = 4 supersymmetric Yang–Mills theory , ... | https://en.wikipedia.org/wiki/Amplituhedron |
Amsterdam Density Functional ( ADF ) is a program for first-principles electronic structure calculations that makes use of density functional theory (DFT). [ 1 ] ADF was first developed in the early seventies by the group of E. J. Baerends from the Vrije Universiteit in Amsterdam, and by the group of T. Ziegler from th... | https://en.wikipedia.org/wiki/Amsterdam_Density_Functional |
Amurca is the Latin name for the bitter-tasting, dark-colored, watery sediment that settles out of unfiltered olive oil over time. It has been known in English as "olive oil lees " [ 1 ] and recently as "olive mill waste water (OMWW)". [ 2 ] Historically, amurca was used for numerous purposes, as first described by Cat... | https://en.wikipedia.org/wiki/Amurca |
An amylase ( / ˈ æ m ɪ l eɪ s / ) is an enzyme that catalyses the hydrolysis of starch (Latin amylum ) into sugars . Amylase is present in the saliva of humans and some other mammals, where it begins the chemical process of digestion . Foods that contain large amounts of starch but little sugar, such as rice and potato... | https://en.wikipedia.org/wiki/Amylase |
Amylin Pharmaceuticals, Inc. is a biopharmaceutical founded in 1987 that was based in San Diego, California . The company was engaged in the discovery, development, and commercialization of drug candidates for the treatment of diabetes , obesity , and other diseases. Amylin produced three drugs: Symlin ( pramlintide ac... | https://en.wikipedia.org/wiki/Amylin_Pharmaceuticals |
1AAP , 1AMB , 1AMC , 1AML , 1BA4 , 1BA6 , 1BJB , 1BJC , 1BRC , 1CA0 , 1HZ3 , 1IYT , 1MWP , 1OWT , 1QCM , 1QWP , 1QXC , 1QYT , 1TAW , 1TKN , 1X11 , 1Z0Q , 1ZJD , 2BEG , 2BP4 , 2FJZ , 2FK1 , 2FK2 , 2FK3 , 2FKL , 2FMA , 2G47 , 2IPU , 2LFM , 2LLM , 2LMN , 2LMO , 2LMP , 2LMQ , 2LOH , 2LP1 , 2OTK , 2R0W , 2WK3 , 2Y29 , 2Y2A ... | https://en.wikipedia.org/wiki/Amyloid-beta_precursor_protein |
In mycology a tissue or feature is said to be amyloid if it has a positive amyloid reaction when subjected to a crude chemical test using iodine as an ingredient of either Melzer's reagent or Lugol's solution , producing a blue to blue-black staining. The term "amyloid" is derived from the Latin amyloideus ("starch-lik... | https://en.wikipedia.org/wiki/Amyloid_(mycology) |
Amyloid beta ( Aβ , Abeta or beta-amyloid ) denotes peptides of 36–43 amino acids that are the main component of the amyloid plaques found in the brains of people with Alzheimer's disease . [ 2 ] The peptides derive from the amyloid-beta precursor protein (APP), which is cleaved by beta secretase and gamma secretase to... | https://en.wikipedia.org/wiki/Amyloid_beta |
Amylolytic process or amylolysis is the conversion of starch into sugar by the action of acids or enzymes such as amylase . [ 1 ]
Starch begins to pile up inside the leaves of plants during times of light when starch is able to be produced by photosynthetic processes. This ability to make starch disappears in the dark... | https://en.wikipedia.org/wiki/Amylolytic_process |
Amylopectin / ˌ æ m ɪ l oʊ ˈ p ɛ k t ɪ n / is a water-insoluble [ 1 ] [ 2 ] polysaccharide and highly branched polymer of α- glucose units found in plants. It is one of the two components of starch , the other being amylose .
Plants store starch within specialized organelles called amyloplasts . To generate energy, th... | https://en.wikipedia.org/wiki/Amylopectin |
The Analytical Information Markup Language ( AnIML ) is an open ASTM XML standard for storing and sharing any analytical chemistry and biological data. [ 1 ]
A main reason of using AnIML is that FAIR data (Findable, Accessible, Interoperable and Reusable) standards are automatically implemented. As AnIML's structure i... | https://en.wikipedia.org/wiki/AnIML |
George Brown (1650–1730) was a Scottish arithmetician , and inventor of two incomplete mechanical calculating machines now kept at the National Museum of Scotland . In 1698 he was granted a patent for his mechanical calculating device.
He was minister of Stranraer , schoolmaster in Fordyce , Banffshire, and in 1680 sc... | https://en.wikipedia.org/wiki/An_Account_of_the_Rotula_Arithmetica |
The book An Album of Fluid Motion is a collection of black-and-white photographs of flow visualizations for different types of fluid flows . These flows include:
The book was self-published by its editor, Milton Van Dyke , fluid mechanics professor at Stanford University . | https://en.wikipedia.org/wiki/An_Album_of_Fluid_Motion |
An Astronomer is an oil-on-canvas painting created in 1652 by Dutch artist Ferdinand Bol . He served as an apprentice to Rembrandt and earlier to Jacob Cuyp . The painting is held in the National Gallery , in London , to which it was donated by E.A. Bennett in 1862. [ 1 ]
The painting shows an astronomer at a table, o... | https://en.wikipedia.org/wiki/An_Astronomer |
An Introduction to the Philosophy of Mathematics is a 2012 textbook on the philosophy of mathematics by Mark Colyvan . It has a focus on issues in contemporary philosophy , such as the mathematical realism – anti-realism debate and the philosophical significance of mathematical practice, and largely skips over historic... | https://en.wikipedia.org/wiki/An_Introduction_to_the_Philosophy_of_Mathematics |
An Introduction to the Theory of Numbers is a classic textbook in the field of number theory , by G. H. Hardy and E. M. Wright .
The book grew out of a series of lectures by Hardy and Wright and was first published in 1938.
The third edition added an elementary proof of the prime number theorem , and the sixth editio... | https://en.wikipedia.org/wiki/An_Introduction_to_the_Theory_of_Numbers |
Ana R. Guadalupe Quiñones (born 1956) is a Puerto Rican chemist and academic academic administrator who served as the chancellor of the University of Puerto Rico, Río Piedras Campus from 2009 to 2013. She researches electrochemistry , specifically in the development of electrochemical sensors, biosensors , and electroc... | https://en.wikipedia.org/wiki/Ana_Guadalupe |
Anabaena variabilis is a species of filamentous cyanobacterium . This species of the genus Anabaena and the domain Eubacteria is capable of photosynthesis . This species is heterotrophic , meaning that it may grow without light in the presence of fructose . It also can convert atmospheric dinitrogen to ammonia via nitr... | https://en.wikipedia.org/wiki/Anabaena_variabilis |
Anabaseine (3,4,5,6-tetrahydro-2,3′-bipyridine) is an alkaloid toxin produced by Nemertines worms and Aphaenogaster ants. [ 1 ] It is structurally similar to nicotine and anabasine . [ 2 ] Similarly, it has been shown to act as an agonist on most nicotinic acetylcholine receptors in the central nervous system and perip... | https://en.wikipedia.org/wiki/Anabaseine |
Anabella P. Villalobos is a medicinal chemist and senior pharmaceutical executive at Biogen . [ 1 ]
Villalobos was raised in Panama City . She received her BS in chemistry from the University of Panama , received her Ph.D. (1987) at the University of Kansas with Professor Lester A. Mitscher , and was a National Instit... | https://en.wikipedia.org/wiki/Anabella_Villalobos |
Anabolism ( / ə ˈ n æ b ə l ɪ z ə m / ) is the set of metabolic pathways that construct macromolecules like DNA or RNA from smaller units. [ 1 ] [ 2 ] These reactions require energy , known also as an endergonic process. [ 3 ] Anabolism is the building-up aspect of metabolism , whereas catabolism is the breaking-down a... | https://en.wikipedia.org/wiki/Anabolism |
Anadara trapezia , the Sydney cockle ( NSW ), or ark cockle ( Queensland ), is an estuarine filter-feeding bivalve . Its calcareous , heavily ribbed shell can grow to approximately 7 to 8 cm (2.8 to 3.1 in) across. Its range is along the east coast of Australia , from Queensland to Victoria . It has previously exist... | https://en.wikipedia.org/wiki/Anadara_trapezia |
Anaerobic corrosion (also known as hydrogen corrosion ) is a form of metal corrosion occurring in anoxic water . Typically following aerobic corrosion, anaerobic corrosion involves a redox reaction that reduces hydrogen ions and oxidizes a solid metal. [ 1 ] This process can occur in either abiotic conditions through a... | https://en.wikipedia.org/wiki/Anaerobic_corrosion |
Anaerobic exercise is a type of exercise that breaks down glucose in the body without using oxygen; anaerobic means "without oxygen". [ 1 ] This type of exercise leads to a buildup of lactic acid . [ 1 ] In practical terms, this means that anaerobic exercise is more intense, but shorter in duration than aerobic exercis... | https://en.wikipedia.org/wiki/Anaerobic_exercise |
Anaerobic glycolysis is the transformation of glucose to lactate when limited amounts of oxygen (O 2 ) are available. [ 1 ] This occurs in health as in exercising and in disease as in sepsis and hemorrhagic shock. [ 1 ] providing energy for a period ranging from 10 seconds to 2 minutes. During this time it can augment ... | https://en.wikipedia.org/wiki/Anaerobic_glycolysis |
Anaerobic membrane bioreactor or AnMBR is the name of a technology utilized in wastewater treatment . It is a technology in membrane filtration for biomass retention. AnMBR works by using a membrane bioreactor (MBR) in a anaerobic environment. Anaerobic bacteria ( Mesophile or Thermophile ) and archaea convert organic ... | https://en.wikipedia.org/wiki/Anaerobic_membrane_bioreactor |
An anaerobic organism or anaerobe is any organism that does not require molecular oxygen for growth. It may react negatively or even die if free oxygen is present. In contrast, an aerobic organism (aerobe) is an organism that requires an oxygenated environment. Anaerobes may be unicellular (e.g. protozoans , [ 1 ] bact... | https://en.wikipedia.org/wiki/Anaerobic_organism |
Anaerobic respiration is respiration using electron acceptors other than molecular oxygen (O 2 ). Although oxygen is not the final electron acceptor, the process still uses a respiratory electron transport chain. [ 1 ]
In aerobic organisms undergoing respiration, electrons are shuttled to an electron transport chain ,... | https://en.wikipedia.org/wiki/Anaerobic_respiration |
The Anaerococcus and Onthovivens genetic code (tentative code number 36) translates CGG to tryptophan , as determined by the codon assignment software Codetta; [ 1 ] it was further shown that this recoding is associated with a special tRNA with the appropriate anticodon and tRNA identity elements appropriate for such d... | https://en.wikipedia.org/wiki/Anaerococcus_and_Onthovivens_genetic_code |
Anaeromyces robustus is a fungal microorganism that lives in the gut rumen of many ruminant herbivores such as cows and sheep. [ 1 ] Previously thought to be protozoa from their flagellated zoospores, they are biomass degraders, breaking down carbohydrates and plant materials from the food the animal ingests. This fung... | https://en.wikipedia.org/wiki/Anaeromyces_robustus |
An anaesthetic machine ( British English ) or anesthesia machine ( American English ) is a medical device used to generate and mix a fresh gas flow of medical gases and inhalational anaesthetic agents for the purpose of inducing and maintaining anaesthesia . [ 1 ]
The machine is commonly used together with a mechanica... | https://en.wikipedia.org/wiki/Anaesthetic_machine |
The anagama kiln (Japanese Kanji: 穴窯/ Hiragana: あながま) is an ancient type of pottery kiln brought to Japan from China via Korea in the 5th century. It is a version of the climbing dragon kiln of south China, whose further development was also copied, for example in breaking up the firing space into a series of chambers ... | https://en.wikipedia.org/wiki/Anagama_kiln |
Anagenesis is the gradual evolution of a species that continues to exist as an interbreeding population. This contrasts with cladogenesis , which occurs when branching or splitting occurs, leading to two or more lineages and resulting in separate species. [ 1 ] Anagenesis does not always lead to the formation of a new ... | https://en.wikipedia.org/wiki/Anagenesis |
Anagyrine is a teratogenic alkaloid first isolated from (and named for) Anagyris foetida in the year 1885 by French biologists Hardy and Gallois. [ 6 ] A. foetida (family Fabaceae ), the Stinking Bean Trefoil, is a highly toxic shrub native to the Mediterranean region, with a long history of use in folk medicine . [ 7 ... | https://en.wikipedia.org/wiki/Anagyrine |
The anal pore or cytoproct is a structure in various single-celled eukaryotes where waste is ejected after the nutrients from food have been absorbed into the cytoplasm . [ 1 ]
In ciliates, the anal pore ( cytopyge ) and cytostome are the only regions of the pellicle that are not covered by ridges, cilia or rigid cove... | https://en.wikipedia.org/wiki/Anal_pore |
Analitik ( Russian : Аналитик ) is a programming language , [ 2 ] developed in 1968 [ 1 ] [ 3 ] [ 4 ] [ 5 ] at the Institute of Cybernetics of the Academy of Sciences of the Ukrainian SSR in the USSR . It is a development on the ALMIR-65 language, [ 6 ] keeping compatibility with it.
Distinctive features of the langua... | https://en.wikipedia.org/wiki/Analitik |
An analog delay line is a network of electrical components connected in cascade [ dubious – discuss ] , where each individual element creates a time difference between its input and output. It operates on analog signals whose amplitude varies continuously. In the case of a periodic signal, the time difference can be de... | https://en.wikipedia.org/wiki/Analog_delay_line |
Analog devices are a combination of both analog machine and analog media that can together measure , record , reproduce, receive or broadcast continuous information , for example, the almost infinite number of grades of transparency , voltage , resistance , rotation , or pressure . [ 1 ] In theory, the continuous infor... | https://en.wikipedia.org/wiki/Analog_device |
An analog ear or analog cochlea is a model of the ear or of the cochlea (in the inner ear ) based on an electrical, electronic or mechanical analog . An analog ear is commonly described as an interconnection of electrical elements such as resistors , capacitors , and inductors ; sometimes transformers and active ampli... | https://en.wikipedia.org/wiki/Analog_ear |
Analogue electronics ( American English : analog electronics ) are electronic systems with a continuously variable signal, in contrast to digital electronics where signals usually take only two levels . The term analogue describes the proportional relationship between a signal and a voltage or current that represents t... | https://en.wikipedia.org/wiki/Analogue_electronics |
The analogy of the divided line ( Ancient Greek : γραμμὴ δίχα τετμημένη , romanized : grammē dicha tetmēmenē ) is presented by the Greek philosopher Plato in the Republic (509d–511e). It is written as a dialogue between Glaucon and Socrates , in which the latter further elaborates upon the immediately preceding analogy... | https://en.wikipedia.org/wiki/Analogy_of_the_divided_line |
Analyse des Infiniment Petits pour l'Intelligence des Lignes Courbes (literal translation: Analysis of the infinitely small to understand curves ) of 1696, is the first textbook published on the infinitesimal calculus of Gottfried Wilhelm Leibniz . It was written by the French mathematician Guillaume de l'Hôpital , and... | https://en.wikipedia.org/wiki/Analyse_des_infiniment_petits_pour_l'intelligence_des_lignes_courbes |
An analyser ( British English ) or analyzer ( American English ; see spelling differences ) is a tool used to analyze data. For example, a gas analyzer [ 1 ] tool is used to analyze gases. It examines the given data and tries to find patterns and relationships. An analyser can be a piece of hardware or software.
Autoa... | https://en.wikipedia.org/wiki/Analyser |
Analysis ( pl. : analyses ) is the process of breaking a complex topic or substance into smaller parts in order to gain a better understanding of it. The technique has been applied in the study of mathematics and logic since before Aristotle (384–322 BC), though analysis as a formal concept is a relatively recent devel... | https://en.wikipedia.org/wiki/Analysis |
Analysis Situs is a book by the Princeton mathematician Oswald Veblen , published in 1922. It is based on his 1916 lectures at the Cambridge Colloquium of the American Mathematical Society . The book, which went into a second edition in 1931, was the first English-language textbook on topology , and served for many yea... | https://en.wikipedia.org/wiki/Analysis_Situs_(book) |
In theoretical physics , an analysis of flows is the study of "gauge" or "gaugelike" "symmetries" (i.e. flows the formulation of a theory is invariant under). It is generally agreed that flows indicate nothing more than a redundancy in the description of the dynamics of a system, [ citation needed ] but often, it is si... | https://en.wikipedia.org/wiki/Analysis_of_flows |
Analysis of molecular variance ( AMOVA ), is a statistical model for the molecular algorithm in a single species , typically biological . [ 1 ] The name and model are inspired by ANOVA . The method was developed by Laurent Excoffier , Peter Smouse and Joseph Quattro at Rutgers University in 1992.
Since developing AMOV... | https://en.wikipedia.org/wiki/Analysis_of_molecular_variance |
Analysis of similarities (ANOSIM) is a non-parametric statistical test widely used in the field of ecology . The test was first suggested by K. R. Clarke [ 1 ] as an ANOVA -like test, where instead of operating on raw data , operates on a ranked dissimilarity matrix .
Given a matrix of rank dissimilarities between a s... | https://en.wikipedia.org/wiki/Analysis_of_similarities |
Water chemistry analyses are carried out to identify and quantify the chemical components and properties of water samples. The type and sensitivity of the analysis depends on the purpose of the analysis and the anticipated use of the water. Chemical water analysis is carried out on water used in industrial processes, o... | https://en.wikipedia.org/wiki/Analysis_of_water_chemistry |
Analysis paralysis (or paralysis by analysis ) describes an individual or group process where overanalyzing or overthinking a situation can cause forward motion or decision-making to become " paralyzed ", meaning that no solution or course of action is decided upon within a natural time frame. A situation may be deemed... | https://en.wikipedia.org/wiki/Analysis_paralysis |
The analyst's traveling salesman problem is an analog of the traveling salesman problem in combinatorial optimization . In its simplest and original form, it asks which plane sets are subsets of rectifiable curves of finite length. Whereas the original traveling salesman problem asks for the shortest way to visit every... | https://en.wikipedia.org/wiki/Analyst's_traveling_salesman_theorem |
Analyst is a biweekly peer-reviewed scientific journal covering all aspects of analytical chemistry , bioanalysis , and detection science. It is published by the Royal Society of Chemistry and the editor-in-chief is Melanie Bailey ( University of Surrey ). [ 1 ] The journal was established in 1877 by the Society for An... | https://en.wikipedia.org/wiki/Analyst_(journal) |
An analyte , component (in clinical chemistry ), titrand (in titrations ), or chemical species is a substance or chemical constituent that is of interest in an analytical procedure. The remainder of the sample is called the matrix . The procedure of analysis measures the analyte's chemical or physical properties, thus ... | https://en.wikipedia.org/wiki/Analyte |
Analyte-specific reagents ( ASR s) are a class of biological molecules which can be used to identify and measure the amount of an individual chemical substance in biological specimens.
The U.S. Food and Drug Administration (FDA) defines analyte specific reagents (ASRs) in 21 CFR 864.4020 as “ antibodies , both polyclo... | https://en.wikipedia.org/wiki/Analyte-specific_reagent |
Analytic and enumerative statistical studies are two types of scientific studies :
In any statistical study the ultimate aim is to provide a rational basis for action. Enumerative and analytic studies differ by where the action is taken. Deming first published on this topic in 1942. [ 1 ] Deming summarized the distinc... | https://en.wikipedia.org/wiki/Analytic_and_enumerative_statistical_studies |
In the theory of decision making , the analytic hierarchy process ( AHP ), also analytical hierarchy process , [ 1 ] is a structured technique for organizing and analyzing complex decisions , based on mathematics and psychology . It was developed by Thomas L. Saaty in the 1970s; Saaty partnered with Ernest Forman to de... | https://en.wikipedia.org/wiki/Analytic_hierarchy_process |
An analytic narrative is a social science research method seeking to combine historical narratives with the rigor of rational choice theory , particularly through the use of game theory .
The goal of analytic narratives is to provide several forms of discipline on the structure of case studies , such as a game, out of... | https://en.wikipedia.org/wiki/Analytic_narrative |
In mathematics , an analytic proof is a proof of a theorem in analysis that only makes use of methods from analysis, and that does not predominantly make use of algebraic or geometrical methods. The term was first used by Bernard Bolzano , who first provided a non-analytic proof of his intermediate value theorem and t... | https://en.wikipedia.org/wiki/Analytic_proof |
Analytical reasoning , also known as analytical thinking , [ 1 ] refers to the ability to look at information, be it qualitative or quantitative in nature, and discern patterns within the information. Analytical reasoning involves breaking down large problems into smaller components [ 2 ] and using deductive reasoning ... | https://en.wikipedia.org/wiki/Analytic_reasoning |
In mathematics, the analytic subgroup theorem is a significant result in modern transcendental number theory . It may be seen as a generalisation of Baker's theorem on linear forms in logarithms. Gisbert Wüstholz proved it in the 1980s. [ 1 ] [ 2 ] It marked a breakthrough in the theory of transcendental numbers. Many... | https://en.wikipedia.org/wiki/Analytic_subgroup_theorem |
Analytical Chemistry is a biweekly peer-reviewed scientific journal published since 1929 by the American Chemical Society . Articles address general principles of chemical measurement science and novel analytical methodologies. Topics commonly include chemical reactions and selectivity, chemometrics and data processing... | https://en.wikipedia.org/wiki/Analytical_Chemistry_(journal) |
Analytical band centrifugation (ABC) (also known as analytical band ultracentrifugation, or band sedimentation-velocity), is a specialized ultracentrifugation procedure, where unlike the typical use of (boundary) sedimentation velocity analytical ultracentrifugation (SV-AUC) wherein a homogenous bulk solution is centri... | https://en.wikipedia.org/wiki/Analytical_band_centrifugation |
Analytical chemistry studies and uses instruments and methods to separate , identify, and quantify matter. [ 1 ] In practice, separation, identification or quantification may constitute the entire analysis or be combined with another method. Separation isolates analytes . Qualitative analysis identifies analytes, while... | https://en.wikipedia.org/wiki/Analytical_chemistry |
Analytical light scattering (ALS), also loosely referred to as SEC - MALS , is the implementation of static light scattering (SLS) and dynamic light scattering (DLS) techniques in an online or flow mode. A typical ALS instrument consists of an HPLC / FPLC chromatography system coupled in-line with appropriate light sca... | https://en.wikipedia.org/wiki/Analytical_light_scattering |
In theoretical physics and mathematical physics , analytical mechanics , or theoretical mechanics is a collection of closely related formulations of classical mechanics . Analytical mechanics uses scalar properties of motion representing the system as a whole—usually its kinetic energy and potential energy . The equati... | https://en.wikipedia.org/wiki/Analytical_mechanics |
The analytical profile index , or API , is a classification system for bacteria based on biochemical tests. The system was developed to accelerate the speed of identifying clinically relevant bacteria. It can only be used to identify known species from an index. [ 1 ] The data obtained are phenotypic traits . DNA seque... | https://en.wikipedia.org/wiki/Analytical_profile_index |
Analytical quality control ( AQC ) refers to all those processes and procedures designed to ensure that the results of laboratory analysis are consistent, comparable, accurate and within specified limits of precision . [ 1 ] Constituents submitted to the analytical laboratory must be accurately described to avoid fault... | https://en.wikipedia.org/wiki/Analytical_quality_control |
In physics and applied mathematics , analytical regularization is a technique used to convert boundary value problems which can be written as Fredholm integral equations of the first kind involving singular operators into equivalent Fredholm integral equations of the second kind. The latter may be easier to solve analy... | https://en.wikipedia.org/wiki/Analytical_regularization |
Analytical chemistry studies and uses instruments and methods to separate , identify, and quantify matter. [ 1 ] In practice, separation, identification or quantification may constitute the entire analysis or be combined with another method. Separation isolates analytes . Qualitative analysis identifies analytes, while... | https://en.wikipedia.org/wiki/Analytical_technique |
Analytical thermal desorption , known within the analytical chemistry community simply as "thermal desorption" (TD), is a technique that concentrates volatile organic compounds (VOCs) in gas streams prior to injection into a gas chromatograph (GC). It can be used to lower the detection limits of GC methods, and can imp... | https://en.wikipedia.org/wiki/Analytical_thermal_desorption |
Analytical ultracentrifugation is an analytical technique which combines an ultracentrifuge with optical monitoring systems.
In an analytical ultracentrifuge (commonly abbreviated as AUC), a sample’s sedimentation profile is monitored in real time by an optical detection system. The sample is detected via ultraviolet ... | https://en.wikipedia.org/wiki/Analytical_ultracentrifugation |
In complex analysis , a complex -valued function f {\displaystyle f} of a complex variable z {\displaystyle z} :
One of the most important theorems of complex analysis is that holomorphic functions are analytic and vice versa . Among the corollaries of this theorem are
The argument, first given by Cauchy, hinges on ... | https://en.wikipedia.org/wiki/Analyticity_of_holomorphic_functions |
The analytic–synthetic distinction is a semantic distinction used primarily in philosophy to distinguish between propositions (in particular, statements that are affirmative subject – predicate judgments) that are of two types: analytic propositions and synthetic propositions . Analytic propositions are true or not tru... | https://en.wikipedia.org/wiki/Analytic–synthetic_distinction |
Anammox , an abbreviation for "anaerobic ammonium oxidation", is a globally important microbial process of the nitrogen cycle [ 1 ] that takes place in many natural environments. The bacteria mediating this process were identified in 1999, and were a great surprise for the scientific community. [ 2 ] In the anammox rea... | https://en.wikipedia.org/wiki/Anammox |
Anammox is a wastewater treatment technique that removes nitrogen using anaerobic ammonium oxidation (anammox). [ 1 ] This process is performed by anammox bacteria which are autotrophic , meaning they do not need organic carbon for their metabolism to function. Instead, the metabolism of anammox bacteria convert ammoni... | https://en.wikipedia.org/wiki/Anammox_for_wastewater_treatment |
The anamniotes are an informal group of craniates comprising all fish and amphibians , which lay their eggs in aquatic environments . They are distinguished from the amniotes ( reptiles , birds and mammals ), which can reproduce on dry land either by laying shelled eggs or by carrying fertilized eggs within the female ... | https://en.wikipedia.org/wiki/Anamniotes |
An anamorphic stretch transform ( AST ) also referred to as warped stretch transform is a physics-inspired signal transform that emerged from time stretch dispersive Fourier transform . The transform can be applied to analog temporal signals such as communication signals, or to digital spatial data such as images. [ 1 ... | https://en.wikipedia.org/wiki/Anamorphic_stretch_transform |
Anamorphosis or anamorphogenesis is the process of postembryonic development and moulting in Arthropoda that results in the addition of abdominal body segments, even after sexual maturity. Examples of this mode of development occur in proturans and millipedes .
Protura hatch with only 8 abdominal segments and add the ... | https://en.wikipedia.org/wiki/Anamorphosis_(biology) |
AnandTech was an online computer hardware magazine owned by Future plc . It was founded in April 1997 by then-14-year-old Anand Lal Shimpi , [ 1 ] who was CEO and editor-in-chief until August 2014, with Ryan Smith replacing him as editor-in-chief. The website was a source of hardware reviews for off-the-shelf component... | https://en.wikipedia.org/wiki/AnandTech |
Anandamide (ANA) , also referred to as N -arachidonoylethanolamine (AEA) is a fatty acid neurotransmitter belonging to the fatty acid derivative group known as N-acylethanolamine (NAE). Anandamide takes its name from the Sanskrit word ananda ( आनन्द ), meaning "joy, bliss, delight," plus amide . Anandamide, the first d... | https://en.wikipedia.org/wiki/Anandamide |
Anaplasia (from Ancient Greek ἀνά (ana) ' backward ' and πλάσις (plasis) ' formation ' ) is a condition of cells with poor cellular differentiation , losing the morphological characteristics of mature cells and their orientation with respect to each other and to endothelial cells. The term also refers to a group of mor... | https://en.wikipedia.org/wiki/Anaplasia |
Anaplerotic reactions , a term coined by Hans Kornberg and originating from the Greek ἀνά = 'up' and πληρόω = 'to fill', are chemical reactions that form intermediates of a metabolic pathway . Examples of such are found in the citric acid cycle (TCA cycle). In normal function of this cycle for respiration, concentratio... | https://en.wikipedia.org/wiki/Anaplerotic_reactions |
An anastomosis ( / ə ˌ n æ s t ə ˈ m oʊ s ɪ s / , pl. : anastomoses ) is a connection or opening between two things (especially cavities or passages) that are normally diverging or branching, such as between blood vessels , leaf veins , or streams . Such a connection may be normal (such as the foramen ovale in a fetus'... | https://en.wikipedia.org/wiki/Anastomosis |
In coordination chemistry , anation is the "replacement of the ligand water by an anion in a coordination entity." [ 1 ] The term is however used more loosely to include displacement of any neutral ligand by an anion. [ 2 ] The reaction is pervasive in coordination chemistry. The reverse reaction, displacement of an a... | https://en.wikipedia.org/wiki/Anation |
The Anatolian Biogeographic Region is a biogeographic region of Turkey, as defined by the European Environment Agency .
The Anatolian Biogeographic Region covers the interior and east of Anatolia , and excludes the coastal areas along the Black Sea and Mediterranean .
It includes the central Anatolian Plateau, the Po... | https://en.wikipedia.org/wiki/Anatolian_Biogeographic_Region |
In anatomy , a spatium or anatomic space is a space (cavity or gap). Anatomic spaces are often landmarks to find other important structures. When they fill with gases (such as air) or liquids (such as blood) in pathological ways, they can suffer conditions such as pneumothorax , edema , or pericardial effusion . Many a... | https://en.wikipedia.org/wiki/Anatomic_space |
An anatomical model is a three-dimensional representation of human or animal anatomy , used for medical and biological education . [ 1 ]
The model may show the anatomy partially dissected , or have removable parts allowing the student to remove and inspect the modelled body parts. Some models may have changeable genit... | https://en.wikipedia.org/wiki/Anatomical_model |
An anatomical plane is a hypothetical plane used to transect the body, in order to describe the location of structures or the direction of movements.
In human anatomy and non-human anatomy, four principal planes are used: the median plane, sagittal plane, coronal plane, and transverse plane. [ 1 ]
There could be any ... | https://en.wikipedia.org/wiki/Anatomical_plane |
The anatomical snuff box or snuffbox or foveola radialis is a triangular deepening on the radial , dorsal aspect of the hand —at the level of the carpal bones , specifically, the scaphoid and trapezium bones forming the floor. The name originates from the use of this surface for placing and then sniffing powdered tobac... | https://en.wikipedia.org/wiki/Anatomical_snuffbox |
Anatomical terminology is a specialized system of terms used by anatomists , zoologists , and health professionals , such as doctors , surgeons , and pharmacists , to describe the structures and functions of the body .
This terminology incorporates a range of unique terms, prefixes, and suffixes derived primarily from... | https://en.wikipedia.org/wiki/Anatomical_terminology |
An anatomical variation , anatomical variant , or anatomical variability is a presentation of body structure with morphological features different from those that are typically described in the majority of individuals. Anatomical variations are categorized into three types including morphometric (size or shape), consis... | https://en.wikipedia.org/wiki/Anatomical_variation |
Anatumomab mafenatox is a mouse monoclonal antibody studied for the treatment non-small cell lung cancer , [ 1 ] which acts as a tumor-targeted superantigen . [ 2 ]
It is a fusion protein of a human tumor-associated 5T4 antigen monoclonal IgG1 Fab fragment with an enterotoxin ('mafenatox') of Staphylococcus aureus . [... | https://en.wikipedia.org/wiki/Anatumomab_mafenatox |
ANAXAM stands for " A nalytics with N eutrons A nd X -rays for A dvanced M anufacturing" and it is a knowledge and technology transfer centre in Switzerland. [ 1 ] Anaxam is part of the federal government's "Digitalisation" action plan [ 2 ] and a member of the Advanced Manufacturing Technology Transfer Centers (AM-TTC... | https://en.wikipedia.org/wiki/Anaxam |
Ancestral sequence reconstruction ( ASR ) – also known as ancestral gene / sequence reconstruction / resurrection – is a technique used in the study of molecular evolution . The method uses related sequences to reconstruct an "ancestral" gene from a multiple sequence alignment . [ 1 ]
The method can be used to 'resurr... | https://en.wikipedia.org/wiki/Ancestral_sequence_reconstruction |
Anchor Handling Tug Supply (AHTS) vessels are mainly built to handle anchors for oil rigs , tow them to location, and use them to secure the rigs in place. AHTS vessels sometimes also serve as Emergency Response and Rescue Vessels (ERRVs) and as supply transports.
Many of these vessels are designed to meet the harsh c... | https://en.wikipedia.org/wiki/Anchor_handling_tug_supply_vessel |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.