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BD (company) In 2004, BD completed the acquisition of Atto Bioscience Acquired, a company specializing in optical instrumentation, software, and reagents for real-time analysis of interactions taking place in living cells. In 2005 BD entered the field of proteomics through its acquisition of FFE Weber GmbH, which speci...
https://en.wikipedia.org/wiki?curid=598704
BD (company) The products of this segment include: needles and syringes, intravenous catheters, safety-engineered and auto-disable devices, prefillable drug delivery systems, prefilled IV flush syringes, insulin syringes and pen needles, regional anesthesia needles, and anesthesia trays. This segment primarily sells to...
https://en.wikipedia.org/wiki?curid=598704
BD (company) BD Biosciences serves the following customers: research and clinical laboratories, academic and government institutions, pharmaceutical and biotechnology companies, hospitals, and blood banks. The company's line of plastic conical screwtop test tubes, known as 'Falcon tubes', is popular and the term is som...
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BD (company) In addition, BD has been a component of the Dow Jones Sustainability World Index and the Dow Jones Sustainability North America Index for the four and five consecutive years, respectively. In mid-2007, the firm's Discardit II series of syringes numbered 0607186 was withdrawn from hospitals and other medica...
https://en.wikipedia.org/wiki?curid=598704
BD (company) The recall was initiated on Oct. 28, 2009 after BD received complaints of problems due to air entry through a part of the device. BD stated that the cause of the problem was manufacturing deviation and claimed that it corrected the problem. BD announced that it notified customers about the recall by letter...
https://en.wikipedia.org/wiki?curid=598704
Stipe (botany) In botany, a stipe is a stalk that supports some other structure. The precise meaning is different depending on which taxonomic group is being described. In the case of ferns, the stipe is only the petiole from the rootstock to the beginning of the leaf tissue, or lamina. The continuation of the structur...
https://en.wikipedia.org/wiki?curid=598999
Overburden In mining, overburden (also called waste or spoil) is the material that lies above an area that lends itself to economical exploitation, such as the rock, soil, and ecosystem that lies above a coal seam or ore body. is distinct from tailings, the material that remains after economically valuable components h...
https://en.wikipedia.org/wiki?curid=605524
Photohydrogen is hydrogen produced with the help of artificial or natural light This is how the leaf of a tree splits water molecules into protons (hydrogen ions), electrons (to make carbohydrates) and oxygen (released into the air as a waste product). may also be produced by the photodissociation of water by ultraviol...
https://en.wikipedia.org/wiki?curid=605697
Moonmilk (sometimes called mondmilch, also known as montmilch or as cave milk) is a white, creamy substance found inside limestone caves. It is a precipitate from limestone comprising aggregates of fine crystals of varying composition usually made of carbonates such as calcite, aragonite, hydromagnesite, and/or monohyd...
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Moonmilk In the middle of 16th century moonmilk was used as a medicine according to Gessner, and continued to be used as such until the 19th century. It is said to have cured acidosis and probably cardialgia by neutralizing an overdose of acid. It had no adverse health effects.
https://en.wikipedia.org/wiki?curid=608406
Alexander Gorodnitsky Alexander Moiseevich Gorodnitsky (; born March 20, 1933) is a well-known Soviet and Russian Jewish bard and poet. Professionally, he is a geologist and oceanographer. He is a member of the Russian Academy of Natural Sciences. Gorodnitsky was born in Leningrad to a Russian Jewish family and graduat...
https://en.wikipedia.org/wiki?curid=608799
Clandestine chemistry is chemistry carried out in secret, and particularly in illegal drug laboratories. Larger labs are usually run by gangs or organized crime intending to produce for distribution on the black market. Smaller labs can be run by individual chemists working clandestinely in order to synthesize smaller ...
https://en.wikipedia.org/wiki?curid=610329
Clandestine chemistry Prepared substances (as opposed to those that occur naturally in a consumable form, such as cannabis and psilocybin mushrooms) require reagents. Some drugs, like cocaine and morphine, are extracted from plant sources and refined with the aid of chemicals. Semi-synthetic drugs such as heroin are ma...
https://en.wikipedia.org/wiki?curid=610329
Clandestine chemistry Because many legitimate industrial chemicals such as anhydrous ammonia and iodine are also necessary in the processing and synthesis of most illicitly produced drugs, preventing the diversion of these chemicals from legitimate commerce to illicit drug manufacturing is a difficult job. Governments ...
https://en.wikipedia.org/wiki?curid=610329
Clandestine chemistry In response to stricter international controls, drug traffickers have increasingly been forced to divert chemicals by mislabeling the containers, forging documents, establishing front companies, using circuitous routing, hijacking shipments, bribing officials, or smuggling products across internat...
https://en.wikipedia.org/wiki?curid=610329
Clandestine chemistry Beginning in July 2001, the International Narcotics Control Board (INCB) has opted to organize an international conference with the goal of devising a specific action plan to counter the traffic in MDMA precursor chemicals. They hope to prevent the diversion of chemicals used in the production of ...
https://en.wikipedia.org/wiki?curid=610329
Clandestine chemistry The effects of this initiative have been dramatic and far-reaching. Operation Purple has exposed a significant vulnerability among traffickers, and has grown to include almost thirty nations. According to the DEA, Operation Purple has been highly effective at interfering with cocaine production. H...
https://en.wikipedia.org/wiki?curid=610329
Clandestine chemistry Some laboratories are not using sulfuric acid during the maceration state; consequently, less cocaine alkaloid is extracted from the leaf, producing less cocaine hydrochloride, the powdered cocaine marketed for overseas consumption. Similarly, heroin-producing countries depend on supplies of aceti...
https://en.wikipedia.org/wiki?curid=610329
Clandestine chemistry In place since March 2001, a total of thirty-one countries are currently organized participants in the program in addition to regional participants. The DEA reports that as of June 2001, some 125 consignments of acetic anhydride had been tracked totaling 618,902,223 kilograms. As of July 2001, the...
https://en.wikipedia.org/wiki?curid=610329
Clandestine chemistry As of the early 1990s, methamphetamine use was concentrated among young white males in California and nearby states. Since then its use has spread both demographically and geographically. Methamphetamine has been a favorite among various populations including motorcycle gangs, truckers, laborers, ...
https://en.wikipedia.org/wiki?curid=610329
Clandestine chemistry This made it somewhat more difficult for underground chemists to produce methamphetamine. In May 1995, the DEA shut down two major suppliers of precursors in the United States, seizing 25 metric tons of ephedrine and pseudoephedrine from Clifton Pharmaceuticals and 500 cases of pseudoephedrine fro...
https://en.wikipedia.org/wiki?curid=610329
Clandestine chemistry Toxic chemicals resulting from methamphetamine production may be hoarded or clandestinely dumped, damaging land, water, plant life and wild life, and posing a risk to humans. Waste from methamphetamine labs is frequently dumped on federal, public, and tribal lands. The chemicals involved can explo...
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Clandestine chemistry Michigan reported an increase in incidents in 2016, following the formation of the Midland County Methamphetamine Protocol Team in 2015. Many of the cases reported involved meth users who were making small amounts of the drug in a simple "one-pot method" for both personal use and sale to others. D...
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Clandestine chemistry Obvious dangers include containers of chemicals, equipment, and apparatus that could be used to make illegal drugs, drug paraphernalia, and other illegal items. This process does not cleanup or remove chemical spills, stains or residue that could be harmful to inhabitants. A property that has had ...
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Clandestine chemistry Illicitly produced desomorphine is typically far from pure and often contains large amounts of toxic substances and contaminants as a result of being "cooked" and used without any significant effort to remove the byproducts and leftovers from synthesis. Injecting any such mixture can cause serious...
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Clandestine chemistry Uncle Fester is a writer who commonly writes about different aspects of clandestine chemistry. "Secrets of Methamphetamine Manufacture" is among one of his most popular books, and is considered required reading for DEA Agents. More of his books deal with other aspects of clandestine chemistry, inc...
https://en.wikipedia.org/wiki?curid=610329
Good manufacturing practice Good manufacturing practices (GMP) are the practices required in order to conform to the guidelines recommended by agencies that control the authorization and licensing of the manufacture and sale of food and beverages, cosmetics, pharmaceutical products, dietary supplements, and medical dev...
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Good manufacturing practice Many countries have legislated that manufacturers follow GMP procedures and create their own GMP guidelines that correspond with their legislation. All guideline follows a few basic principles: Good manufacturing practices are recommended with the goal of safeguarding the health of consumers...
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Good manufacturing practice However, since June 2007, a different set of CGMP requirements have applied to all manufacturers of dietary supplements, with additional supporting guidance issued in 2010. Additionally, in the U.S., medical device manufacturers must follow what are called "quality system regulations" which ...
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Good manufacturing practice Within the European Union GMP inspections are performed by National Regulatory Agencies. GMP inspections are performed in Canada by the Health Products and Food Branch Inspectorate; in the United Kingdom by the Medicines and Healthcare Products Regulatory Agency (MHRA); in the Republic of Ko...
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Good manufacturing practice Courts have held that any time the firm is open for business is a reasonable time for an inspection. Other good-practice systems, along the same lines as GMP, exist: Collectively, these and other good-practice requirements are referred to as "GxP" requirements, all of which follow similar ph...
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Electron deficiency is a term describing atom or molecules having fewer than the number of electrons required for maximum stability. At the atomic level, main group atoms having less than 8 electrons or transition metal atoms having less than 18 electrons are described as electron-deficient. At the molecular level, mol...
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Electron deficiency More generally, nearly all carboranes, boranes, and other known and characterized polyboron clusters are similarly electron-precise. Some molecules that have "no overall electron deficiency" can nevertheless function as electron-acceptors at "specific locations" on the cluster, e.g., 1,2-CBH ("o"-ca...
https://en.wikipedia.org/wiki?curid=617777
Transfection is the process of deliberately introducing naked or purified nucleic acids into eukaryotic cells. It may also refer to other methods and cell types, although other terms are often preferred: "transformation" is typically used to describe non-viral DNA transfer in bacteria and non-animal eukaryotic cells, i...
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Transfection Because the term transformation had another sense in animal cell biology (a genetic change allowing long-term propagation in culture, or acquisition of properties typical of cancer cells), the term transfection acquired, for animal cells, its present meaning of a change in cell properties caused by introdu...
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Transfection Viruses used to date include retrovirus, lentivirus, adenovirus, adeno-associated virus, and herpes simplex virus. However, there are drawbacks to using viruses to deliver genes into cells. Viruses can only deliver very small pieces of DNA into the cells, it is labor-intensive and there are risks of random...
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Transfection For some applications of transfection, it is sufficient if the transfected genetic material is only transiently expressed. Since the DNA introduced in the transfection process is usually not integrated into the nuclear genome, the foreign DNA will be diluted through mitosis or degraded. Cell lines expressi...
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Transfection siRNAs can also be transfected to achieve RNA silencing (i.e. loss of RNA and protein from the targeted gene). This has become a major application in research to achieve "knock-down" of proteins of interests (e.g. Endothelin-1) with potential applications in gene therapy. Limitation of the silencing approa...
https://en.wikipedia.org/wiki?curid=619632
Windage The term can apply to several things. is a force created on an object by friction when there is relative movement between air and the object. loss is the reduction in efficiency due to windage forces. For example, electric motors are affected by friction between the rotor and air. Large alternators have signifi...
https://en.wikipedia.org/wiki?curid=623150
Windage In automotive parlance, windage refers to parasitic drag on the crankshaft due to sump oil splashing on the crank train during rough driving, and/or dissipating energy in turbulence from the crank train moving the crankcase gas and oil mist at high RPM. may also inhibit the migration of oil into the sump and ba...
https://en.wikipedia.org/wiki?curid=623150
Lode In geology, a lode is a deposit of metalliferous ore that fills or is embedded in a fissure (or crack) in a rock formation or a vein of ore that is deposited or embedded between layers of rock. The current meaning (ore vein) dates from the 17th century, being an expansion of an earlier sense of a "channel, waterco...
https://en.wikipedia.org/wiki?curid=626023
Abraham Van Helsing Professor Abraham Van Helsing, a fictional character from the 1897 gothic horror novel "Dracula", is an aged polymath Dutch doctor with a wide range of interests and accomplishments, partly attested by the string of letters that follows his name: "MD, D.Ph., D.Litt., etc.", indicating a wealth of ex...
https://en.wikipedia.org/wiki?curid=626067
Abraham Van Helsing Van Helsing is one of the few characters in the novel who is fully physically described in one place. In chapter 14, Mina Harker describes him as: Van Helsing's personality is described by John Seward, his former student, thus: In the novel Van Helsing is described as having what is apparently a thi...
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Abraham Van Helsing Van Helsing, Seward, and Arthur each donate blood to her, but each night she continues to lose blood. He prescribes her garlic, makes a necklace of garlic flowers for her and hangs garlic about her room. He also gives her a crucifix to wear around her neck. Lucy's demise was brought by her mother, w...
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Abraham Van Helsing To destroy Dracula and prevent further spread of evil, the party enter his estate at Carfax and as a group encounter him for the first time. They discover that he has been purchasing properties in and around London, with plans to distribute 50 boxes of Transylvanian earth to them, used as graves so ...
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Abraham Van Helsing Mina agrees that any plans should be kept from her for fear that Dracula could read her thoughts. The group have additional encounters with Dracula as they continue to search for his residences throughout London and sterilize the boxes. Learning that his final grave is aboard a boat, Van Helsing ded...
https://en.wikipedia.org/wiki?curid=626067
Abraham Van Helsing He is broken out of this enchantment when he hears a "soul wail" from Mina, awakening him. He proceeds to drive stakes into their hearts and sever their heads, one by one. Van Helsing returns to Mina and they see the rest of their party as they chase a group of gypsies down the Borgo Pass and corner...
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Abraham Van Helsing While Van Helsing is forced to focus on his lectures over the next few days, he leaves his vampire-hunting equipment with Holmes and Watson, who track Dracula to Dartmoor, where he has hidden in Baskerville Hall, and are able to defeat him using Van Helsing's advice. After Dracula is defeated when t...
https://en.wikipedia.org/wiki?curid=626067
Abraham Van Helsing In 1902 he worked together with the resurrected Dracula to prevent the assassination of King Edward VII. There have been numerous works of fiction depicting descendants of Van Helsing carrying on the family tradition.
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Zhang Daqing (张大庆) (born October 23, 1969) is a Chinese amateur astronomer. He is from Henan province. He co-discovered periodic comet 153P/Ikeya-Zhang. He is the first Chinese amateur astronomer who has a comet name after him. He is also a telescope maker. Periodic comet 153P/Ikeya-Zhang is discovered by his self-made...
https://en.wikipedia.org/wiki?curid=631710
Aleksandr Poleshchuk Aleksandr Fyodorovich Poleshchuk (, born October 30, 1953) is a Russian cosmonaut. Born in Cheremkhovo, Irkutsk region, he graduated from the Moscow Aviation Institute in 1977 with a mechanical engineering diploma. He then joined RSC Energia as a test engineer, where he was occupied with perfecting...
https://en.wikipedia.org/wiki?curid=635379
Wunda (crater) Wunda is a large crater on the surface of Uranus' moon Umbriel. It is 131 km in diameter and is located near the equator of Umbriel. The crater is named after "Wunda", a dark spirit of Australian aboriginal mythology. Wunda has a prominent albedo feature on its floor, which takes the shape of a ring of b...
https://en.wikipedia.org/wiki?curid=639158
George Brettingham Sowerby III (16 September 1843 – 31 January 1921) was a British conchologist, publisher, and illustrator. He, too, worked (like his father George Brettingham Sowerby II and his grandfather George Brettingham Sowerby I) on the "Thesaurus Conchyliorium", a comprehensive, beautifully illustrated work on...
https://en.wikipedia.org/wiki?curid=640533
Quiver diagram In physics, a quiver diagram is a graph representing the matter content of a gauge theory that describes D-branes on orbifolds. Each node of the graph corresponds to a factor "U"("N") of the gauge group, and each link represents a field in the bifundamental representation The relevance of quiver diagrams...
https://en.wikipedia.org/wiki?curid=645203
Agrobacterium is a genus of Gram-negative bacteria established by H. J. Conn that uses horizontal gene transfer to cause tumors in plants. "tumefaciens" is the most commonly studied species in this genus. "Agrobacterium" is well known for its ability to transfer DNA between itself and plants, and for this reason it has...
https://en.wikipedia.org/wiki?curid=646842
Agrobacterium Non-"Agrobacterium" strains have been isolated from environmental samples which harbour a Ri-plasmid whilst laboratory studies have shown that non-"Agrobacterium" strains can also harbour a Ti-plasmid. Some environmental strains of "Agrobacterium" possess neither a Ti nor Ri-plasmid. These strains are avi...
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Agrobacterium A later study suggested that "Agrobacterium" attaches to and genetically transforms several types of human cells by integrating its T-DNA into the human cell genome. The study was conducted using cultured human tissue and did not draw any conclusions regarding related biological activity in nature. The ab...
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Agrobacterium This method transforms only cells in immediate contact with the bacteria, and results in transient expression of plasmid DNA. Agroinfiltration is commonly used to transform tobacco ("Nicotiana"). A common transformation protocol for "Arabidopsis" is the floral dip method: inflorescence are dipped in a sus...
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Agrobacterium One important finding is the possibility that chromosomes are evolving from plasmids in many of these bacteria. Another discovery is that the diverse chromosomal structures in this group appear to be capable of supporting both symbiotic and pathogenic lifestyles. The availability of the genome sequences o...
https://en.wikipedia.org/wiki?curid=646842
Nikolai Severtzov Nikolai Alekseevich Severtzov (5 November 1827 – 8 February 1885) was a Russian explorer and naturalist. Severtzov studied at the Moscow University and at the age of eighteen he came into contact with G.S. Karelin and took an interest in central Asia. In 1857 he joined a mission to Syr-Darya. On the e...
https://en.wikipedia.org/wiki?curid=648116
Duricrust is a hard layer on or near the surface of soil. Duricrusts can range in thickness from a few millimeters or centimeters to several meters. It is a general term (not to be confused with duripan) for a zone of chemical precipitation and hardening formed at or near the surface of sedimentary bodies through pedog...
https://en.wikipedia.org/wiki?curid=650321
Shiraz Minwalla Shiraz Naval Minwalla (born 2 January, 1972) is an Indian theoretical physicist and string theorist. He is a faculty member in the Department of Theoretical Physics at Tata Institute of Fundamental Research, Mumbai. Prior to his present position, he was a Harvard Junior Fellow and subsequently an Assist...
https://en.wikipedia.org/wiki?curid=653011
Shiraz Minwalla He has two children, a boy Spandan Minwalla and a girl Chinar Minwalla.
https://en.wikipedia.org/wiki?curid=653011
Retrogradation is the landward change in position of the front of a river delta with time. This occurs when the mass balance of sediment into the delta is such that the volume of incoming sediment is less than the volume of the delta that is lost through subsidence, sea-level rise, and/or erosion. As a result, retrogra...
https://en.wikipedia.org/wiki?curid=654355
Bottom crawler A bottom crawler is an underwater exploration and recovery vehicle. It is designed to sink to the bottom of a body of water, where it moves about using traction against the bottom with wheels or tracks. It is usually tethered to a surface ship by cables providing power, control, video, and lifting capabi...
https://en.wikipedia.org/wiki?curid=655266
Albert Sacco Jr. (born May 3, 1949) is an American chemical engineer who flew as a Payload Specialist on the Space Shuttle "Columbia" on Shuttle mission STS-73 in 1995. Born in Boston, Massachusetts, Sacco completed a B.S. degree in chemical engineering from Northeastern University in Boston in 1973, and then a Ph.D. d...
https://en.wikipedia.org/wiki?curid=656373
Environmental chemistry is the scientific study of the chemical and biochemical phenomena that occur in natural places. It should not be confused with green chemistry, which seeks to reduce potential pollution at its source. It can be defined as the study of the sources, reactions, transport, effects, and fates of chem...
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Environmental chemistry The term contaminant is often used interchangeably with "pollutant", which is a substance that has a detrimental impact on the surrounding environment. Whilst a contaminant is sometimes defined as a substance present in the environment as a result of human activity, but without harmful effects, ...
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Environmental chemistry Common analytical techniques used for quantitative determinations in environmental chemistry include classical wet chemistry, such as gravimetric, titrimetric and electrochemical methods. More sophisticated approaches are used in the determination of trace metals and organic compounds. Metals ar...
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Environmental chemistry Polymerase Chain Reaction PCR is able to identify species of bacteria and other organisms through specific DNA and RNA gene isolation and amplification and is showing promise as a valuable technique for identifying environmental microbial contamination. Peer-reviewed test methods have been publi...
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Water mass An oceanographic water mass is an identifiable body of water with a common formation history which has physical properties distinct from surrounding water. Properties include temperature, salinity, chemical - isotopic ratios, and other physical quantities. Water masses are generally distinguished not only by...
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Jay C. Buckey Jay Clark Buckey, Jr. (born June 6, 1956, in New York City) is an American physician and astronaut who flew aboard one Space Shuttle mission (STS-90) as a Payload Specialist. Buckey briefly ran for the Democratic nomination to challenge New Hampshire Senator John E. Sununu, a first term Republican, when h...
https://en.wikipedia.org/wiki?curid=658606
Jay C. Buckey In 2018, Buckey was part of research using virtual reality, at the Australian Antarctic Division’s Mawson Station, wherein the expeditioners used VR headsets to view Australian beach scenes, European nature scenes, and North American nature scenes of forests and urban environments, which were different fr...
https://en.wikipedia.org/wiki?curid=658606
Clumping (biology) Clumping is a behavior in an organism, usually sessile, in which individuals of a particular species group close to one another for beneficial purposes. Clumping can be caused by the abiotic environment surrounding an organism. Barnacles, for example, group together on rocks that are exposed for the ...
https://en.wikipedia.org/wiki?curid=660213
Mordehai Milgrom Mordehai "Moti" Milgrom is an Israeli physicist and professor in the department of Particle Physics and Astrophysics at the Weizmann Institute in Rehovot, Israel. He received his first degree from the Hebrew University of Jerusalem in 1966. Later he studied at the Weizmann Institute of Science and comp...
https://en.wikipedia.org/wiki?curid=660242
Herman Verlinde Herman Louis Verlinde (born 21 January 1962) is a Dutch theoretical physicist and string theorist. He is a professor at Princeton University. He is also the identical twin brother of Erik Verlinde.
https://en.wikipedia.org/wiki?curid=661246
Pancake ice is a form of sea ice that consists of round pieces of ice with diameters ranging from to , depending on the local conditions that affect ice formation. It may have a thickness of up to . features elevated rims formed by piling the frazil ice/slush/etc. up the edges of pancakes when they collide, both due to...
https://en.wikipedia.org/wiki?curid=661585
Macula (planetary geology) Macula (pl. maculae ) is the Latin word for 'spot'. It is used in planetary nomenclature to refer to unusually dark areas on the surface of a planet or moon. They are seen on the icy surfaces of Pluto, Jupiter's moon Europa, Saturn's moon Titan, Neptune's moon Triton, and Pluto's moon Charon....
https://en.wikipedia.org/wiki?curid=663171
Cymdeithas Edward Llwyd (English: Edward Llwyd Society) is a Welsh natural history organization whose name commemorates the great Welsh natural historian, geographer and linguist Edward Llwyd. The organizes regular country walks throughout Wales in sites of interest of the Welsh environment, including SSI's & post-indu...
https://en.wikipedia.org/wiki?curid=665333
Spatial resolution In physics and geosciences, the term "spatial resolution" refers to the precision of a measurement with respect to space, or the real dimension that represents a pixel of the image. While in some instruments, like cameras and telescopes, spatial resolution is directly connected to angular resolution,...
https://en.wikipedia.org/wiki?curid=667957
Fire point The fire point of a fuel is the lowest temperature at which the vapour of that fuel will continue to burn for at least 5 seconds after ignition by an open flame of standard dimension. At the flash point, a lower temperature, a substance will ignite briefly, but vapor might not be produced at a rate to sustai...
https://en.wikipedia.org/wiki?curid=668710
Linea (plural: lineae ) is Latin for 'line'. In planetary geology it is used to refer to any long markings, dark or bright, on a planet or moon's surface. The planet Venus and Jupiter's moon Europa have numerous lineae; Pluto and Saturn's moon Rhea have several.
https://en.wikipedia.org/wiki?curid=670517
Abell 1835 is a galaxy cluster in the Abell catalogue. It is a cluster that also gravitational lenses more-distant background galaxies to make them visible to astronomers. The cluster has a red shift of around 75,900 km/s and spans 12′. In 2004, one of the galaxies lensed by this cluster was proposed to be the most dis...
https://en.wikipedia.org/wiki?curid=671262
Warped geometry In mathematics and physics, in particular differential geometry and general relativity, a warped geometry is a Riemannian or Lorentzian manifold whose metric tensor can be written in form The geometry almost decomposes into a Cartesian product of the "y" geometry and the "x" geometry – except that the "...
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Homentropic flow In fluid mechanics, a homentropic flow has uniform and constant entropy. It distinguishes itself from an isentropic or particle isentropic flow, where the entropy level of each fluid particle does not change with time, but may vary from particle to particle. This means that a homentropic flow is necess...
https://en.wikipedia.org/wiki?curid=672080
Worldsheet In string theory, a worldsheet is a two-dimensional manifold which describes the embedding of a string in spacetime. The term was coined by Leonard Susskind around 1967 as a direct generalization of the world line concept for a point particle in special and general relativity. The type of string, the geometr...
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Supercharge In theoretical physics, a supercharge is a generator of supersymmetry transformations. It is an example of the general notion of a charge in physics. Supercharge, denoted by the symbol Q, is an operator which transforms bosons into fermions, and vice versa. Since the supercharge operator changes a particle ...
https://en.wikipedia.org/wiki?curid=673356
Petrarch (crater) Petrarch is a crater on Mercury. This crater is located within the distorted terrain on the opposite side of the planet from the Caloris Basin. It was named after Petrarch, the medieval Italian poet, by the IAU in 1976.
https://en.wikipedia.org/wiki?curid=675909
Lithophyte Lithophytes are plants that grow in or on rocks. Those that grow on rocks are also known as epipetric or epilithic plants. Lithophytes that grow on land feed off nutrients from rain water and nearby decaying plants, including their own dead tissue. Chasmophytes grow in fissures in rocks where soil or organic...
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Burroughs (crater) Burroughs is a large crater on Mars at latitude 72.5S / longitude 243.1W, with a diameter of . The crater is named after Edgar Rice Burroughs, the American science fiction novelist who wrote a series of fantasy novels set on the planet.
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Guido of Pisa (died 9 July 1169) was an Italian geographer from Pisa. In 1119 he edited and updated the "Geographica", a geographic encyclopedia first created in the eighth century by the Anonymous of Ravenna. It followed in the tradition of earlier geographies, such as Strabo's "Geographica", Pomponius Mela's "De situ...
https://en.wikipedia.org/wiki?curid=681575
Canso (Martian crater) Canso is a Martian crater. It lies about 450 kilometres west of the Viking 1 lander, slightly northeast of Lunae Planum, and west of Chryse Planitia, in the Lunae Palus quadrangle. The crater is named after Canso, a fishing town in Nova Scotia. The name was officially adopted in 1988 by the Inter...
https://en.wikipedia.org/wiki?curid=681577
Extremal black hole In theoretical physics, an extremal black hole is a black hole with the minimal possible mass that can be compatible with a given charge and angular momentum. In other words, this is the smallest possible black hole that can exist while rotating at a given fixed constant speed. The concept of an ext...
https://en.wikipedia.org/wiki?curid=681802
Near-extremal black hole In theoretical physics, a near-extremal black hole is a black hole which is not far from the minimal possible mass that can be compatible with the given charges and angular momentum. The calculations of the properties of near-extremal black holes are usually performed using perturbation theory ...
https://en.wikipedia.org/wiki?curid=681806
Alza Corporation was a pharmaceutical and medical systems company. Founded in 1968 by Dr. Alejandro Zaffaroni; the company's name is a portmanteau of his name. was a major pioneer in the field of drug delivery systems, bringing over 20 prescription pharmaceutical products to market, and employing about 10,000 people du...
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Fram (crater) Fram is an impact crater located within the Meridiani Planum extraterrestrial plain, situated within the Margaritifer Sinus quadrangle (MC-19) region of the planet Mars. It was visited by the rover "Opportunity" (MER-B) on Sol 84, April 24, 2004. Fram spans about 8 metres (26 feet) in diameter. "Opportuni...
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Faraday Society The was a British society for the study of physical chemistry, founded in 1903 and named in honour of Michael Faraday. In 1980, it merged with several similar organisations, including the Chemical Society, the Royal Institute of Chemistry, and the Society for Analytical Chemistry to form the Royal Socie...
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Scintillometer A scintillometer is a scientific device used to measure small fluctuations of the refractive index of air caused by variations in temperature, humidity, and pressure. It consists of an optical or radio wave transmitter and a receiver at opposite ends of an atmospheric propagation path. The receiver detec...
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Abraham Langlet Nils (9 July 1868 – 30 March 1936; known by his second given name) was a Swedish chemist. Langlet was born in Södertälje, Sweden. He was the son of architect Emil Victor Langlet (1824–1898) and his wife, author Clara Mathilda Ulrika Clementine Söderén (1832–1904). His brothers included author Valdemar L...
https://en.wikipedia.org/wiki?curid=706454
Atmospheric chemistry is a branch of atmospheric science in which the chemistry of the Earth's atmosphere and that of other planets is studied. It is a multidisciplinary approach of research and draws on environmental chemistry, physics, meteorology, computer modeling, oceanography, geology and volcanology and other di...
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