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Tunable diode laser absorption spectroscopy
Tunable diode laser absorption spectroscopy (TDLAS, sometimes referred to as TDLS, TLS or TLAS) is a technique for measuring the concentration of certain species such as methane, water vapor and many more, in a gaseous mixture using tunable diode lasers and laser absorption spectrometry. The advantage of TDLAS over other techniques for concentration measurement is its ability to achieve very low detection limits (of the order of ppb). Apart from concentration, it is also possible to determine the temperature, pressure, velocity and mass flux of the gas under observation. TDLAS is by far the most common laser based absorption technique for quantitative assessments of species in gas phase.
Boiler stay
A boiler stay is an internal structural element of a boiler. Where the shell of a boiler or other pressure vessel is made of cylindrical or (part) spherical elements, the internal pressure will be contained without distortion. However, flat surfaces of any significant size will distort under pressure, tending to bulge. Stays of various types are used to support these surfaces by tying them together to resist pressure. Some boiler configurations require a great deal of staying. A large locomotive boiler may require several thousand stays to support the firebox. In water tube boilers, stays were sometimes used between their main chambers, and could themselves be water tubes.
Clarifying agent
Clarifying agents are used to remove suspended solids from liquids by inducing flocculation, causing the solids to form larger aggregates that can be easily removed after they either float to the surface or sink to the bottom of the containment vessel.
Clear cell sarcoma
Clear cell sarcoma is a rare form of cancer called a sarcoma. It is known to occur mainly in the soft tissues and dermis. Rare forms were thought to occur in the gastrointestinal tract before they were discovered to be different and redesignated as GNET. Recurrence is common.Clear cell sarcoma's neoplastic cells express the EWSR1-ATF1 fusion gene in a majority of cases or a EWSR1-CREB1, EWSR1-CREM, or EWSR1-DDIT3 fusion gene in a small subset of cases (see FET gene family of fusion genes). Clear cell sarcoma of the soft tissues in adults is not related to the pediatric tumor known as clear cell sarcoma of the kidney.
Sodium- and chloride-dependent glycine transporter 1
Sodium- and chloride-dependent glycine transporter 1, also known as glycine transporter 1, is a protein that in humans is encoded by the SLC6A9 gene which is promising therapeutic target for treatment of diabetes and obesity.
Dynamical Theory of Crystal Lattices
Dynamical Theory of Crystal Lattices is a book in solid state physics, authored collaboratively by Max Born and Kun Huang. The book was originally started by Born in c. 1940, and was finished in the 1950s by Huang in consultation with Born. The text is considered a classical treatise on the subject of lattice dynamics, phonon theory, and elasticity in crystalline solids, but excluding metals and other complex solids with order/disorder phenomena. J. D. Eshelby, Melvin Lax, and A. J. C. Wilson reviewed the book in 1955, among several others.
Warm inflation
In physical cosmology, warm inflation is one of two dynamical realizations of cosmological inflation. The other is the standard scenario, sometimes called cold inflation.In warm inflation radiation production occurs concurrently with inflationary expansion. This is consistent with the conditions necessary for inflation as given by the Friedmann equations of general relativity, which simply require that the vacuum energy density dominates the energy content of the universe at time of inflation, and so does not prohibit some radiation to be present. As such the most general picture of inflation would include a radiation energy density component. The presence of radiation during inflation implies the inflationary phase could smoothly end into a radiation-dominated era without a distinctively separate reheating phase, thus providing a solution to the graceful exit problem of inflation.
Kepler conjecture
The Kepler conjecture, named after the 17th-century mathematician and astronomer Johannes Kepler, is a mathematical theorem about sphere packing in three-dimensional Euclidean space. It states that no arrangement of equally sized spheres filling space has a greater average density than that of the cubic close packing (face-centered cubic) and hexagonal close packing arrangements. The density of these arrangements is around 74.05%.
Learning disability
Learning disability, learning disorder, or learning difficulty (British English) is a condition in the brain that causes difficulties comprehending or processing information and can be caused by several different factors. Given the "difficulty learning in a typical manner", this does not exclude the ability to learn in a different manner. Therefore, some people can be more accurately described as having a "learning difference", thus avoiding any misconception of being disabled with a possible lack of an ability to learn and possible negative stereotyping. In the United Kingdom, the term "learning disability" generally refers to an intellectual disability, while conditions such as dyslexia and dyspraxia are usually referred to as "learning difficulties".While learning disability and learning disorder are often used interchangeably, they differ in many ways. Disorder refers to significant learning problems in an academic area. These problems, however, are not enough to warrant an official diagnosis. Learning disability, on the other hand, is an official clinical diagnosis, whereby the individual meets certain criteria, as determined by a professional (such as a psychologist, psychiatrist, speech-language pathologist, or pediatrician). The difference is in the degree, frequency, and intensity of reported symptoms and problems, and thus the two should not be confused. When the term "learning disorder" is used, it describes a group of disorders characterized by inadequate development of specific academic, language, and speech skills. Types of learning disorders include reading (dyslexia), arithmetic (dyscalculia) and writing (dysgraphia).The unknown factor is the disorder that affects the brain's ability to receive and process information. This disorder can make it problematic for a person to learn as quickly or in the same way as someone who is not affected by a learning disability. People with a learning disability have trouble performing specific types of skills or completing tasks if left to figure things out by themselves or if taught in conventional ways.
Ramification group
In number theory, more specifically in local class field theory, the ramification groups are a filtration of the Galois group of a local field extension, which gives detailed information on the ramification phenomena of the extension.
Schumacher criteria
Schumacher criteria are diagnostic criteria that were previously used for identifying multiple sclerosis (MS). Multiple sclerosis, understood as a central nervous system (CNS) condition, can be difficult to diagnose since its signs and symptoms may be similar to other medical problems. Medical organizations have created diagnostic criteria to ease and standardize the diagnostic process especially in the first stages of the disease. Schumacher criteria were the first internationally recognized criteria for diagnosis, and introduced concepts still in use, as CDMS (clinically definite MS).
Srimad Bhagavata Book 2
The Srimad Bhagavata is one of the main books of Hindu philosophy. The Bhagavata is a devotional account of the Supreme Being and His incarnations. The second book of the Srimad Bhagavata covers the creation of the universe according to Hindu Mythology and gives a summary of the Bhagavata. This book consists of 10 chapters. The Bhagavata is authored by Veda Vyasa and the source material for this summary is the translation presented by Swami Tapasyananda. Additional material and analysis is included. For the events leading up to this point, see Srimad Bhagavata Book 1.
Design around
In the field of patents, the phrase "to design around" means to invent an alternative to a patented invention that does not infringe the patent's claims. The phrase can also refer to the invention itself.
Genu recurvatum
Genu recurvatum is a deformity in the knee joint, so that the knee bends backwards. In this deformity, excessive extension occurs in the tibiofemoral joint. Genu recurvatum is also called knee hyperextension and back knee. This deformity is more common in women and people with familial ligamentous laxity. Hyperextension of the knee may be mild, moderate or severe. The normal range of motion (ROM) of the knee joint is from 0 to 135 degrees in an adult. Full knee extension should be no more than 10 degrees. In genu recurvatum, normal extension is increased. The development of genu recurvatum may lead to knee pain and knee osteoarthritis.
Palivizumab
Palivizumab, sold under the brand name Synagis, is a monoclonal antibody produced by recombinant DNA technology used to prevent severe disease caused by respiratory syncytial virus (RSV) infections. It is recommended for infants at high-risk for RSV due to conditions such as prematurity or other medical problems including heart or lung diseases.The most common side effects include fever and rash.Palivizumab is a humanized monoclonal antibody (IgG) directed against an epitope in the A antigenic site of the F protein of RSV. In two phase III clinical trials in the pediatric population, palivizumab reduced the risk of hospitalization due to RSV infection by 55% and 45%. Palivizumab is dosed once a month via intramuscular (IM) injection, to be administered throughout the duration of the RSV season, which in based on past trends has started in Mid-September to Mid-November.Palivizumab targets the fusion protein of RSV, inhibiting its entry into the cell and thereby preventing infection. Palivizumab was approved for medical use in 1998.
Domestic flight
A domestic flight is a form of commercial flight within civil aviation where the departure and the arrival take place in the same country.Airports serving domestic flights only are known as domestic airports. Domestic flights are generally cheaper and shorter than most international flights. Some international flights may be cheaper than domestic ones due to the short distance between the pair of cities in different countries, and also because domestic flights might, in smaller countries, mainly be used by high paying business travellers, while leisure travellers use road or rail domestically.
One-parameter group
In mathematics, a one-parameter group or one-parameter subgroup usually means a continuous group homomorphism φ:R→G from the real line R (as an additive group) to some other topological group G . If φ is injective then φ(R) , the image, will be a subgroup of G that is isomorphic to R as an additive group. One-parameter groups were introduced by Sophus Lie in 1893 to define infinitesimal transformations. According to Lie, an infinitesimal transformation is an infinitely small transformation of the one-parameter group that it generates. It is these infinitesimal transformations that generate a Lie algebra that is used to describe a Lie group of any dimension.
Contourlet
Contourlets form a multiresolution directional tight frame designed to efficiently approximate images made of smooth regions separated by smooth boundaries. The contourlet transform has a fast implementation based on a Laplacian pyramid decomposition followed by directional filterbanks applied on each bandpass subband.
Maximum-minimums identity
In mathematics, the maximum-minimums identity is a relation between the maximum element of a set S of n numbers and the minima of the 2n − 1 non-empty subsets of S. Let S = {x1, x2, ..., xn}. The identity states that max min min min {x1,x2,…,xn}, or conversely min max max max {x1,x2,…,xn}. For a probabilistic proof, see the reference.
Cricopharyngeal spasm
Cricopharyngeal spasms occur in the cricopharyngeus muscle of the pharynx. Cricopharyngeal spasm is an uncomfortable but harmless and temporary disorder.
Number form
A number form is a mental map of numbers, which automatically and involuntarily appears whenever someone who experiences number-forms thinks of numbers. Numbers are mapped into distinct spatial locations and the mapping may be different across individuals. Number forms were first documented and named by Sir Francis Galton in his The Visions of Sane Persons. Later research has identified them as a type of synesthesia.
Forbidden subgraph problem
In extremal graph theory, the forbidden subgraph problem is the following problem: given a graph G , find the maximal number of edges ex ⁡(n,G) an n -vertex graph can have such that it does not have a subgraph isomorphic to G . In this context, G is called a forbidden subgraph.An equivalent problem is how many edges in an n -vertex graph guarantee that it has a subgraph isomorphic to G
JANUS clinical trial data repository
Janus clinical trial data repository is a clinical trial data repository (or data warehouse) standard as sanctioned by the U.S. Food and Drug Administration (FDA). It was named for the Roman god Janus (mythology), who had two faces, one that could see in the past and one that could see in the future. The analogy is that the Janus data repository would enable the FDA and the pharmaceutical industry to both look retrospectively into past clinical trials, and also relative to one or more current clinical trials (or even future clinical trials thru better enablement of clinical trial design).
TTC3P1
Tetratricopeptide repeat domain 3 pseudogene 1 is a protein that in humans is encoded by the TTC3P1 gene.
Magnetic shoe closures
Magnetic shoe closures are devices that close shoes using two magnetic bits attached to the shoelaces. The closures can be applied to most shoes.
Yuxiang shredded pork
Yuxiang shredded pork (simplified Chinese: 鱼香肉丝; traditional Chinese: 魚香肉絲; pinyin: yúxiāng ròusī; sometimes translated as fish-flavored pork slices, or more vaguely as shredded pork with garlic sauce) is a common dish in Sichuan cuisine. Yuxiang is one of the main traditional flavors in Sichuan.
Verbal Behavior
Verbal Behavior is a 1957 book by psychologist B. F. Skinner, in which he describes what he calls verbal behavior, or what was traditionally called linguistics. Skinner's work describes the controlling elements of verbal behavior with terminology invented for the analysis - echoics, mands, tacts, autoclitics and others - as well as carefully defined uses of ordinary terms such as audience.
NGLY1 deficiency
NGLY1 deficiency is a very rare genetic disorder caused by biallelic pathogenic variants in NGLY1. It is an autosomal recessive disorder. Errors in deglycosylation are responsible for the symptoms of this condition. Clinically, most affected individuals display developmental delay, lack of tears, elevated liver transaminases and a movement disorder. NGLY1 deficiency is difficult to diagnose, and most individuals have been identified by exome sequencing.
Hamburg Notation System
The Hamburg Sign Language Notation System, or HamNoSys, is a transcription system for all sign languages (not only for American Sign Language), with a direct correspondence between symbols and gesture aspects, such as hand location, shape and movement. It was developed in 1985 at the University of Hamburg, Germany. As of 2020, it is in its fourth revision. Though it has roots in Stokoe notation, HamNoSys does not identify with any specific national diversified fingerspelling system, and as such is intended for a wider range of applications than Stokoe which was designed specifically for ASL and only later adapted to other sign languages. Unlike SignWriting and the Stokoe system, it is not intended as a practical writing system. It's more like the International Phonetic Alphabet in that regard. Both systems are meant for use by linguistics, and include detail such as allophones that are not relevant to those actually using the language. The HamNoSys is not encoded in Unicode. Computer processing is made possible by a HamNoSysUnicode.ttf font, which uses Private Use Area characters.
MonoGame
MonoGame is a free and open source C# framework used by game developers to make games for multiple platforms and other systems. It is also used to make Windows and Windows Phone games run on other systems. It supports iOS, Android, macOS, tvOS, Linux, PlayStation 4, PlayStation Vita, Xbox One and Nintendo Switch. It implements the Microsoft XNA 4 application programming interface (API). It has been used for several games, including Bastion and Fez.
Miniature book
A miniature book is a very small book. Standards for what may be termed a miniature rather than just a small book have changed through time. Today, most collectors consider a book to be miniature only if it is 3 inches or smaller in height, width, and thickness, particularly in the United States. Many collectors consider nineteenth-century and earlier books of 4 inches to fit in the category of miniatures. Book from 3–4 inches in all dimensions are termed macrominiature books. Books less than 1 inch in all dimensions are called microminiature books. Books less than 1/4 inch in all dimensions are known as ultra-microminiature books.
Antitragus piercing
An antitragus piercing is a perforation of the outer ear cartilage for the purpose of inserting and wearing a piece of jewelry. It is placed in the antitragus, a piece of cartilage opposite the ear canal. Overall, the piercing has characteristics similar to the tragus piercing; the piercings are performed and cared for in much the same way.
Microsoft Chrome
Microsoft's Chrome was the code name for a set of APIs that allowed DirectX to be easily accessed from user-space software, including HTML. Launched with some fanfare in early 1998, Chrome, and the related Chromeffects, was re-positioned several times before being canceled only a few months later in a corporate reorganization. Throughout its brief lifespan, the product was widely derided as an example of Microsoft's embrace, extend and extinguish strategy of ruining standards efforts by adding options that only ran on their platforms.
DCL Technology Demonstrator programme
The US DCL (Detection Classification and Localisation) demonstrator program is aimed at proving that an active torpedo detection system is able to resolve a salvo of torpedoes with sufficient time and accuracy that an anti-torpedo torpedo may be fired back to hit and destroy the threat.
Microlithography
Microlithography is a general name for any manufacturing process that can create a minutely patterned thin film of protective materials over a substrate, such as a silicon wafer, in order to protect selected areas of it during subsequent etching, deposition, or implantation operations. The term is normally used for processes that can reliably produce features of microscopic size, such as 10 micrometres or less. The term nanolithography may be used to designate processes that can produce nanoscale features, such as less than 100 nanometres. Microlithography is a microfabrication process that is extensively used in the semiconductor industry and also manufacture microelectromechanical systems.
Quantum capacity
In the theory of quantum communication, the quantum capacity is the highest rate at which quantum information can be communicated over many independent uses of a noisy quantum channel from a sender to a receiver. It is also equal to the highest rate at which entanglement can be generated over the channel, and forward classical communication cannot improve it. The quantum capacity theorem is important for the theory of quantum error correction, and more broadly for the theory of quantum computation. The theorem giving a lower bound on the quantum capacity of any channel is colloquially known as the LSD theorem, after the authors Lloyd, Shor, and Devetak who proved it with increasing standards of rigor.
Silliness
Silliness is defined as engaging in "a ludicrous folly", showing a "lack of good sense or judgment", or "the condition of being frivolous, trivial, or superficial". In television, film, and the circus, portrayals of silliness such as exaggerated, funny behaviour are used to amuse audiences. Portrayals of silliness, provided by clowns and jesters, are also used to lift the spirits of people in hospitals.
Interatomic Coulombic decay
Interatomic Coulombic decay (ICD) is a general, fundamental property of atoms and molecules that have neighbors. Interatomic (intermolecular) Coulombic decay is a very efficient interatomic (intermolecular) relaxation process of an electronically excited atom or molecule embedded in an environment. Without the environment the process cannot take place. Until now it has been mainly demonstrated for atomic and molecular clusters, independently of whether they are of van-der-Waals or hydrogen bonded type.
Ideal quotient
In abstract algebra, if I and J are ideals of a commutative ring R, their ideal quotient (I : J) is the set (I:J)={r∈R∣rJ⊆I} Then (I : J) is itself an ideal in R. The ideal quotient is viewed as a quotient because KJ⊆I if and only if K⊆(I:J) . The ideal quotient is useful for calculating primary decompositions. It also arises in the description of the set difference in algebraic geometry (see below).
Trace zero cryptography
In 1998 Gerhard Frey firstly proposed using trace zero varieties for cryptographic purpose. These varieties are subgroups of the divisor class group on a low genus hyperelliptic curve defined over a finite field. These groups can be used to establish asymmetric cryptography using the discrete logarithm problem as cryptographic primitive. Trace zero varieties feature a better scalar multiplication performance than elliptic curves. This allows fast arithmetic in these groups, which can speed up the calculations with a factor 3 compared with elliptic curves and hence speed up the cryptosystem. Another advantage is that for groups of cryptographically relevant size, the order of the group can simply be calculated using the characteristic polynomial of the Frobenius endomorphism. This is not the case, for example, in elliptic curve cryptography when the group of points of an elliptic curve over a prime field is used for cryptographic purpose. However to represent an element of the trace zero variety more bits are needed compared with elements of elliptic or hyperelliptic curves. Another disadvantage, is the fact, that it is possible to reduce the security of the TZV of 1/6th of the bit length using cover attack.
FRW/CFT duality
The FRW/CFT duality is a conjectured duality for Friedmann–Robertson–Walker models inspired by the AdS/CFT correspondence. It assumes that the cosmological constant is exactly zero, which is only the case for models with exact unbroken supersymmetry. Because the energy density does not approach zero as we approach spatial infinity, the metric is not asymptotically flat. This is not an asymptotically cold solution.
Farrier
A farrier is a specialist in equine hoof care, including the trimming and balancing of horses' hooves and the placing of shoes on their hooves, if necessary. A farrier combines some blacksmith's skills (fabricating, adapting, and adjusting metal shoes) with some veterinarian's skills (knowledge of the anatomy and physiology of the lower limb) to care for horses' feet. Traditionally an occupation for men, in a number of countries women have now become farriers.
Mode 3 (telephone)
In telephony, mode 3 is a method of line sharing in which the line passes through a device (the mode 3 device) to connect to other devices. This enables the mode 3 device to control the line, and gain priority in need. It is a common alternative to parallel connection.
Hovione
Hovione is a Contract Development and Manufacturing Organization (CDMO) with services for drug substance, drug product intermediate and drug product. The company has four FDA inspected sites in the United States, Portugal, Ireland and China development laboratories in Lisbon, Portugal and New Jersey, USA. Hovione is also present in the inhalation area, and provides a complete range of services, from active pharmaceutical ingredients (APIs), formulation development and devices. Hovione was the first Chemical/ Pharmaceutical Company to become a Certified B Corporation (certification), is a member of Rx-360 and EFCG.
Lyryx Learning
Lyryx Learning (Lyryx) is an educational software company offering open educational resources (OERs) paired with online homework & exams for undergraduate introductory courses in Mathematics & Statistics and Business & Economics.
5-Formamidoimidazole-4-carboxamide ribotide
5-Formamidoimidazole-4-carboxamide ribotide (or FAICAR) is an intermediate in the formation of purines. It is formed by the enzyme AICAR transformylase from AICAR and 10-formyltetrahydrofolate.
Sotolon
Sotolon (also known as sotolone) is a lactone and an extremely powerful aroma compound, with the typical smell of fenugreek or curry at high concentrations and maple syrup, caramel, or burnt sugar at lower concentrations. Sotolon is the major aroma and flavor component of fenugreek seed and lovage, and is one of several aromatic and flavor components of artificial maple syrup. It is also present in molasses, aged rum, aged sake and white wine, flor sherry, roast tobacco, and dried fruiting bodies of the mushroom Lactarius helvus. Sotolon can pass through the body relatively unchanged, and consumption of foods high in sotolon, such as fenugreek, can impart a maple syrup aroma to one's sweat and urine. In some individuals with the genetic disorder maple syrup urine disease, it is spontaneously produced in their bodies and excreted in their urine, leading to the disease's characteristic smell.This molecule is thought to be responsible for the mysterious maple syrup smell that has occasionally wafted over Manhattan since 2005. Sotolon was first isolated in 1975 from the herb fenugreek. The compound was named in 1980 when it was found to be responsible for the flavor of raw cane sugar: soto- means "raw sugar" in Japanese and -olon signifies that the molecule is an enol lactone.Several aging-derived compounds have been pointed out as playing an important role on the aroma of fortified wines; however, sotolon (3-hydroxy-4,5-dimethyl-2(5H)-furanone) is recognized as being the key odorant and has also been classified as a potential aging marker of these type of wines. This chiral lactone is a powerful odorant, which can impart a nutty, caramel, curry, or rancid odor, depending on its concentration and enantiomeric distribution. Despite being pointed out as a key odorant of other fortified wines, the researchers’ attention has also been directed to its off-flavor character, associated to the premature oxidative aging of young dry white wines, overlapping the expected fruity, flowery, and fresh character. This compound can be detected by miniaturized emulsification extraction followed by GC–MS/SIM and single-step miniaturized liquid-liquid extraction followed by LC-MS/MS analysis
Serial Line Internet Protocol
The Serial Line Internet Protocol (SLIP) is an encapsulation of the Internet Protocol designed to work over serial ports and router connections. It is documented in RFC 1055. On personal computers, SLIP has largely been replaced by the Point-to-Point Protocol (PPP), which is better engineered, has more features, and does not require its IP address configuration to be set before it is established. On microcontrollers, however, SLIP is still the preferred way of encapsulating IP packets, due to its very small overhead.
XMLGUI
XMLGUI is a KDE framework for designing the user interface of an application using XML, using the idea of actions. In this framework, the programmer designs various actions that their application can implement, with several actions defined for the programmer by the KDE framework, such as opening a file or closing the application. Each action can be associated with various data including icons, explanatory text, and tooltips.
Power walking
Power walking or speed walking is the act of walking with a speed at the upper end of the natural range for the walking gait, typically 7 to 9 km/h (4.5 to 5.5 mph). To qualify as power walking as opposed to jogging or running, at least one foot must be in contact with the ground at all times (see walking for a formal definition).
Anterior cerebral artery
The anterior cerebral artery (ACA) is one of a pair of cerebral arteries that supplies oxygenated blood to most midline portions of the frontal lobes and superior medial parietal lobes of the brain. The two anterior cerebral arteries arise from the internal carotid artery and are part of the circle of Willis. The left and right anterior cerebral arteries are connected by the anterior communicating artery.
Alternansucrase
In enzymology, an alternansucrase (EC 2.4.1.140) is an enzyme that catalyzes a chemical reaction that transfers an alpha-D-glucosyl residue from sucrose alternately to the 6- and 3-positions of the non-reducing terminal residue of an alpha-D-glucan, thereby creating a glucan with alternating alpha-1,6- and alpha-1,3-bonds. The name "alternan" was coined in 1982 (Cote & Robyt) for the glucan based on its alternating linkage structure.
TD-1 RNA motif
The TD-1 RNA motif is a conserved RNA structure found only in the species Treponema denticola, at least among bacteria whose genomes were sequenced in 2007 when the RNA motif was identified. The T. denticola genome contains 28 predicted TD-1 RNAs, and all but two of these are positioned such that they are likely to be in the 5' UTR of the downstream gene. This arrangement suggests that TD-1 RNAs likely correspond to cis-regulatory elements. However, due to the variety of genes apparently regulated by TD-1 RNAs, no specific hypothesis as to its function was suggested.
E (theorem prover)
E is a high-performance theorem prover for full first-order logic with equality. It is based on the equational superposition calculus and uses a purely equational paradigm. It has been integrated into other theorem provers and it has been among the best-placed systems in several theorem proving competitions. E is developed by Stephan Schulz, originally in the Automated Reasoning Group at TU Munich, now at Baden-Württemberg Cooperative State University Stuttgart.
Coloration evidence for natural selection
Animal coloration provided important early evidence for evolution by natural selection, at a time when little direct evidence was available. Three major functions of coloration were discovered in the second half of the 19th century, and subsequently used as evidence of selection: camouflage (protective coloration); mimicry, both Batesian and Müllerian; and aposematism.
Wingman (social)
Wingman (or wingmate) is a role that a person may take when a friend needs support with approaching potential romantic partners. People who have a wingman can have more than one wingman. A wingman is someone who is on the "inside" and is used to help someone with intimate relationships. In general, one person's wingman will help them avoid attention from undesirable prospective partners or attract desirable ones, or both.
Porphyridium cruentum
Porphyridium cruentum is a species of red algae in the family Porphyridiophyceae.
Poncirin
Poncirin is the 7-O-neohesperidoside of isosakuranetin. Poncirin can be extracted from trifoliate orange (Poncirus trifoliata).
Vibratory shear-enhanced process
Vibratory shear enhanced process (VSEP) is a membrane separation technology platform invented in 1987 and patented in 1989 by Dr. J. Brad Culkin. VSEP's vibration system was designed to prevent membrane fouling, or the build-up of solid particles on the surface of the membrane. VSEP systems have been applied in a variety of industrial environments.
Rage comic
A rage comic is a short cartoon strip using a growing set of pre-made cartoon faces, or rage faces, which usually express rage or some other simple emotion or activity. They are usually crudely drawn in Microsoft Paint or other simple drawing programs, and were most popular in the early 2010s. These webcomics have spread much in the same way that Internet memes do, and several memes have originated in this medium. They have been characterized by Ars Technica as an "accepted and standardized form of online communication." The popularity of rage comics has been attributed to their use as vehicles for humorizing shared experiences. The range of expression and standardized, easily identifiable faces has allowed uses such as teaching English as a foreign language.In the early 2020s, rage comics were revived as "trollge incidents". Trollge incidents are a series of memes revolving around Carlos Ramirez's Trollface character from Rage Comics but with a much darker and introspective tone. These memes usually take the form of "Trollge incidents", which are stories narrated in steps and taking a darker tone as the story goes on. There are many popular trollge incidents, such as the "Betrayal incident" and "Nature's corruption incident".
Linear video editing
Linear video editing is a video editing post-production process of selecting, arranging and modifying images and sound in a predetermined, ordered sequence. Regardless of whether it was captured by a video camera, tapeless camcorder, or recorded in a television studio on a video tape recorder (VTR) the content must be accessed sequentially.For the most part video editing software has replaced linear editing. In the past, film editing was done in linear fashion, where film reels were literally cut into long strips divided by takes and scenes, and then glued or taped back together to create a logical sequence of film. Linear video editing is more time consuming and highly specialised and tedious work. Still, it is relevant today because of these reasons: The method is simple and inexpensive.
Underhook
An underhook is a clinch hold that is used in grappling to control the opponent. It is performed from any direction by putting an arm under the opponent's arm, and holding the opponent's midsection or upper body. Having an underhook with one arm is called a single underhook, while having underhooks with both arms is known as double underhooks. The typical response to an underhook is to try to break it, or to establish an overhook.
Effects of parasitic worms on the immune system
The effects of parasitic worms, or helminths, on the immune system is a recently emerging topic of study among immunologists and other biologists. Experiments have involved a wide range of parasites, diseases, and hosts. The effects on humans have been of special interest. The tendency of many parasitic worms to pacify the host's immune response allows them to mollify some diseases, while worsening others.
Turntable anti-skating
Turntable anti-skating is a feature used in phonograph turntables to prevent skating of the tonearm.
Noncommutative signal-flow graph
In automata theory and control theory, branches of mathematics, theoretical computer science and systems engineering, a noncommutative signal-flow graph is a tool for modeling interconnected systems and state machines by mapping the edges of a directed graph to a ring or semiring. A single edge weight might represent an array of impulse responses of a complex system (see figure to the right), or a character from an alphabet picked off the input tape of a finite automaton, while the graph might represent the flow of information or state transitions. As diverse as these applications are, they share much of the same underlying theory.
Pentachlorobenzenethiol
Pentachlorobenzenethiol is a chemical compound from the group of thiols and organochlorine compounds. The chemical formula is C6HCl5S.
SANDDE
SANDDE was a software and hardware system, developed primarily by IMAX Corporation, designed to create hand-drawn, stereoscopic 3D animation content. SANDDE is an acronym for "Stereoscopic ANimation Drawing DEvice" and is a play on the Japanese term for "3D", which is pronounced "San-D".
LONGi
Xi'an LONGi Silicon Materials Corporation is a Chinese silicon producer. LONGi was established in 2000 and is the world's largest monocrystalline silicon producer. Baoshen Zhong is LONGi's chairman.
High-low skirt
High-low skirts, also known as asymmetrical, waterfall, or mullet skirts, are skirts with a hem that is higher in the front, or side, than in the back.
Ubuntu User
Ubuntu User is a paper magazine that was launched by Linux New Media AG in May 2009.The publication is aimed at users of the Ubuntu operating system and focuses on reviews, community news, how to articles and troubleshooting tips. It also includes a Discovery Guide aimed at beginners.
Technosphera (publisher)
Technosphera is a primary Russian scientific and technologic literature publisher. Since 1996 it has been publishing books and magazines about science and technology.
IntelliPoint
Microsoft IntelliPoint is the Microsoft-branded software driver for the company's hardware mice. Microsoft has released versions for both Windows and Mac OS X. It has been succeeded by Microsoft Mouse and Keyboard Center, which combines IntelliType (a Microsoft keyboard driver) with IntelliPoint.
Dynamic aperture (accelerator physics)
The dynamic aperture is the stability region of phase space in a circular accelerator.
Key (instrument)
A key is a component of a musical instrument, the purpose and function of which depends on the instrument. However, the term is most often used in the context of keyboard instruments, in which case it refers to the exterior part of the instrument that the player physically interacts in the process of sound production. On instruments equipped with tuning machines such as guitars or mandolins, a key is part of a tuning machine. It is a worm gear with a key shaped end used to turn a cog, which, in turn, is attached to a post which winds the string. The key is used to make pitch adjustments to a string. With other instruments, zithers and drums, for example, a key is essentially a small wrench used to turn a tuning machine or lug.
ISO 25178
ISO 25178: Geometrical Product Specifications (GPS) – Surface texture: areal is an International Organization for Standardization collection of international standards relating to the analysis of 3D areal surface texture.
Whistle-stop train tour
A whistle stop or whistle-stop tour is a style of political campaigning where the politician makes a series of brief appearances or speeches at a number of small towns over a short period of time. Originally, whistle-stop appearances were made from the open platform of an observation car or a private railroad car.
Intel 8289
The Intel 8289 is a Bus arbiter designed for Intel 8086/8087/8088/8089. The chip is supplied in 20-pin DIP package. The 8086 (and 8088) operate in maximum mode, so they are configured primarily for multiprocessor operation or for working with coprocessors. Necessary control signals are generated by the 8289. This version was available for US$44.80 in quantities of 100.
Mechanical heat treatment
Mechanical heat treatment (MHT) is an alternative waste treatment technology. This technology is also commonly termed autoclaving. MHT involves a mechanical sorting or pre-processing stage with technology often found in a material recovery facility. The mechanical sorting stage is followed by a form of thermal treatment. This might be in the form of a waste autoclave or processing stage to produce a refuse derived fuel pellet. MHT is sometimes grouped along with mechanical biological treatment. MHT does not however include a stage of biological degradation (anaerobic digestion or composting).
I. M. Sechenov Institute of Evolutionary Physiology and Biochemistry
The I. M. Sechenov Institute of Evolutionary Physiology and Biochemistry (IEPHB) is a facility in Saint Petersburg, Russia, dedicated to research in the fields of biochemistry and evolutionary physiology.
Hopp–Woods scale
The Hopp–Woods hydrophilicity scale of amino acids is a method of ranking the amino acids in a protein according to their water solubility in order to search for surface locations on proteins, and especially those locations that tend to form strong interactions with other macromolecules such as proteins, DNA, and RNA.Given the amino acid sequence of any protein, likely interaction sites can be identified by taking the moving average of six amino acid hydrophilicity values along the polypeptide chain, and looking for local peaks in the data plot.
Peter Kohl (scientist)
Peter Kohl FAHA FHRS FTPS FIUPS is a scientist specializing in integrative cardiac research. He studies heterocellular electrophysiological interactions in cardiac tissue, myocardial structure-function relationships using 'wet' and 'dry' lab models, and mechano-electrical autoregulation of the heart.
Cuban sunset
A Cuban sunset is cocktail made from rum and a mixture of lemonade, lime soda, guava nectar, and grenadine syrup.
Benzaldehyde dehydrogenase (NAD+)
In enzymology, a benzaldehyde dehydrogenase (NAD+) (EC 1.2.1.28) is an enzyme that catalyzes the chemical reaction benzaldehyde + NAD+ + H2O ⇌ benzoate + NADH + 2 H+The 3 substrates of this enzyme are benzaldehyde, NAD+, and H2O, whereas its 3 products are benzoate, NADH, and H+.
CRACR2A
Calcium release activated channel regulator 2A is a protein that in humans is encoded by the CRACR2A gene.
Dashboard of Sustainability
The Dashboard of Sustainability is a free-of-charge, non-commercial software package configured to convey the complex relationships among economic, social, and environmental issues.
Gribenes
Gribenes or grieven (Yiddish: גריבענעס, [ˈɡrɪbənəs], "cracklings"; Hebrew: גלדי שומן) is a dish consisting of crisp chicken or goose skin cracklings with fried onions.
MDMB-CHMICA
MDMB-CHMICA is an indole-based synthetic cannabinoid that is a potent agonist of the CB1 receptor and has been sold online as a designer drug. While MDMB-CHMICA was initially sold under the name "MMB-CHMINACA", the compound corresponding to this code name (i.e. the isopropyl instead of t-butyl analogue of MDMB-CHMINACA) has been identified on the designer drug market in 2015 as AMB-CHMINACA.
Turtle graphics
In computer graphics, turtle graphics are vector graphics using a relative cursor (the "turtle") upon a Cartesian plane (x and y axis). Turtle graphics is a key feature of the Logo programming language.
Snub triheptagonal tiling
In geometry, the order-3 snub heptagonal tiling is a semiregular tiling of the hyperbolic plane. There are four triangles and one heptagon on each vertex. It has Schläfli symbol of sr{7,3}. The snub tetraheptagonal tiling is another related hyperbolic tiling with Schläfli symbol sr{7,4}.
Andreas Zimmer
Andreas Zimmer is Professor of Neurobiology and Director of the Institute for Molecular Psychiatry at the University of Bonn; he was previously professor at the University of Bielefeld and a researcher at the National Institute of Mental Health. He is perhaps best known in the field of cannabinoid research. His most cited paper on this subject, in Proceedings of the National Academy of Sciences, has been cited 323 times. He has also done major work in the genetic sequencing of the genes for the function of the nervous system. His most widely cited paper in this subject in Nature Genetics, has been cited 262 times. He has produced more than 121 research articles, as shown in Web of Science.
Cakewalk (carnival game)
Cakewalk (or cake-walk) is a game played at carnivals, funfairs, and fundraising events. It is similar to a raffle and musical chairs.
The Vital Question
The Vital Question is a book by the English biochemist Nick Lane about the way the evolution and origin of life on Earth was constrained by the provision of energy.
DDX3X
ATP-dependent RNA helicase DDX3X is an enzyme that in humans is encoded by the DDX3X gene.
Associative interference
Associative interference is a cognitive theory established on the concept of associative learning, which suggests that the brain links related elements. When one element is stimulated, its associates can also be activated. The most known study demonstrating the credibility of this concept was Pavlov's experiment in 1927 which was later developed into the learning procedure known as classical conditioning.However, whilst classical conditioning and associative learning both explore how the brain utilizes this cognitive association to benefit us, studies have also shown how the brain can mistakenly associate related, but incorrect elements together, and this is known as associative interference. A simple example of this would be when one was asked a series of multiplication questions. A study conducted in 1985 showed that over 90% of the mistakes subjects made were actually answers to other questions with a common multiplicand. That is, questions such as 4 x 6 = 24 and 3 x 8 = 24 were very likely to promote errors (8 x 4 = 24) due to associative interference.Associative interference was widely investigated and researchers realized there were different types of interference, namely retroactive interference which investigates how new memories disrupts the retrieval of old memories, and proactive interference which investigates how old memories disrupts the retrieval of new memories. These two were subsequently known as the interference theory.
Variable-frequency drive
A variable-frequency drive (VFD, or adjustable-frequency drives, adjustable-speed drives), variable-speed drives, AC drives, micro drives, inverter drives, or drives) is a type of AC motor drive (system incorporating a motor) that controls speed and torque by varying the frequency of the input electricity. Depending on its topology, it controls the associated voltage or current variation.VFDs are used in applications ranging from small appliances to large compressors. Systems using VFDs can be more efficient than hydraulic systems, such as in systems with pumps and damper control for fans.Since the 1980s, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.
Jury rigging
In maritime transport terms, and most commonly in sailing, jury-rigged is an adjective, a noun, and a verb. It can describe the actions of temporary makeshift running repairs made with only the tools and materials on board; and the subsequent results thereof. The origin of jury-rigged and jury-rigging lies in such efforts done on boats and ships, characteristically sail powered to begin with. Jury-rigging can be applied to any part of a ship; be it its super-structure (hull, decks), propulsion systems (mast, sails, rigging, engine, transmission, propeller), or controls (helm, rudder, centreboard, daggerboards, rigging).
Corey–House synthesis
The Corey–House synthesis (also called the Corey–Posner–Whitesides–House reaction and other permutations) is an organic reaction that involves the reaction of a lithium diorganylcuprate ( CuLi ) with an organic halide or pseudohalide ( R′−X ) to form a new alkane, as well as an ill-defined organocopper species and lithium (pseudo)halide as byproducts.
Paper soccer
Paper soccer (or paper hockey) is an abstract strategy game played on a square grid representing a soccer or hockey field. Two players take turns extending a line representing the position of a ball until it reaches one of the grid's two-goal spaces. A traditional paper-and-pencil game, it is commonly played in schools and can be found in some magazines. Many computer implementations of the game also exist. Despite the game's simple rules, paper soccer has various expanded strategies and tactics.
Song bells
Song bells are a musical instrument in the keyboard percussion family. They are a mallet percussion instrument in the metallophone family that is essentially a cross between the vibraphone, glockenspiel, and celesta. They have bars made of aluminum.They sound one octave down from the glockenspiel, or one octave above concert pitch and generally have a range of 2+1⁄2 octaves. Song bells have been made by various makers at different times but were first introduced by J. C. Deagan, Inc. in 1918 and manufactured by the company until 1924.
2,2'-Dipyrromethene
2,2'-Dipyrromethene, often called just dipyrromethene or dipyrrin, is a chemical compound with formula C9H8N2 whose skeleton can be described as two pyrrole rings C5N connected by a methyne bridge =CH– through their nitrogen-adjacent (position-2) carbons; the remaining bonds being satisfied by hydrogen atoms. It is an unstable compound that is readily attacked by nucleophilic compounds above −40 °C.2,2'-Dipyrromethene and its more stable and easily prepared derivatives—formally obtained by replacing one or more hydrogen atoms by other functional groups—are important precursors for the family of BODIPY fluorescent dies. The derivatives include salts of the dipyrrinato anion C9H7N–2 and of the cation C9H9N+2.