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Brevianamide Brevianamides are indole alkaloids that belong to a class of naturally occurring 2,5-diketopiperazines produced as secondary metabolites of fungi in the genus "Penicillium" and "Aspergillus". Structurally similar to paraherquamides, they are a small class compounds that contain a bicyclo[2.2.2]diazoctane r... | https://en.wikipedia.org/wiki?curid=23175578 |
Brevianamide In mammalian (mice lung cell) studies, brevianamide A has shown to induce cytoxicity in cells. Furthermore, ELISA assays showed elevated levels of tumor necrosis factor-alpha (TNF-A), macrophage inflammatory protein-2 (MIP-2), and interleukin 6 (IL-6). Therefore, brevianamide A may not be a suitable insect... | https://en.wikipedia.org/wiki?curid=23175578 |
Biosynthesis of cocaine The biosynthesis of cocaine has long attracted the attention of biochemists and organic chemists. This interest is partly motivated by the strong physiological effects of cocaine, but a further incentive was the unusual bicyclic structure of the molecule. The biosynthesis can be viewed as occurr... | https://en.wikipedia.org/wiki?curid=23176204 |
Biosynthesis of cocaine The additional carbon atoms required for the synthesis of cocaine are derived from acetyl-CoA, by addition of two acetyl-CoA units to the "N"-methyl-Δ-pyrrolinium cation. The first addition is a Mannich-like reaction with the enolate anion from acetyl-CoA acting as a nucleophile towards the pyrr... | https://en.wikipedia.org/wiki?curid=23176204 |
Biosynthesis of cocaine Willstätter's synthesis derived cocaine from tropinone. Robert Robinson and Edward Leete also made significant contributions. | https://en.wikipedia.org/wiki?curid=23176204 |
Lamb–Mössbauer factor In physics, the (LMF, after Willis Lamb and Rudolf Mössbauer) or elastic incoherent structure factor (EISF) is the ratio of elastic to total incoherent neutron scattering, or the ratio of recoil-free to total nuclear resonant absorption in Mössbauer spectroscopy. The corresponding factor for coher... | https://en.wikipedia.org/wiki?curid=23183287 |
Homogenization (chemistry) Homogenization or homogenisation is any of several processes used to make a mixture of two mutually non-soluble liquids the same throughout. This is achieved by turning one of the liquids into a state consisting of extremely small particles distributed uniformly throughout the other liquid. A... | https://en.wikipedia.org/wiki?curid=23183652 |
Homogenization (chemistry) Homogenization breaks the fat into smaller sizes so it no longer separates, allowing the sale of non-separating milk at any fat specification. Milk homogenization is accomplished by mixing large amounts of harvested milk, then forcing the milk at high pressure through small holes. Yet another... | https://en.wikipedia.org/wiki?curid=23183652 |
Homogenization (biology) Homogenization, in cell biology or molecular biology, is a process whereby different fractions of a biological sample become equal in composition. It can be a disease sign in histopathology, or an intentional process in research: A homogenized sample is equal in composition throughout, so that ... | https://en.wikipedia.org/wiki?curid=23183669 |
Homogenization (biology) High-pressure homogenization is used to isolate the contents of Gram-positive bacteria, since these cells are exceptionally resistant to lysis, and may be combined with high-temperature sterilization. Dounce homogenization is a technique suitable for soft mammalian tissues, while lysis of mamma... | https://en.wikipedia.org/wiki?curid=23183669 |
ReAction! Chemistry in the Movies (2009, ) is a nonfiction book about movies, chemistry, and chemistry in the movies by Chemistry Professor Mark Griep and Artist Marjorie Mikasen published by Oxford University Press USA. The authors were awarded an Alfred P. Sloan Foundation grant in the area of Public Understanding of... | https://en.wikipedia.org/wiki?curid=23183722 |
Beryllium carbide Beryllium carbide, or BeC, is a metal carbide. Similar to diamond, it is a very hard compound. is prepared by heating the elements beryllium and carbon at elevated temperatures (above 900°C). It also may be prepared by reduction of beryllium oxide with carbon at a temperature above 1,500°C: decomposes... | https://en.wikipedia.org/wiki?curid=23185684 |
Lineatin is a pheromone produced by female striped ambrosia beetle, "Trypodendron lineatum" Olivier. These kinds of beetles are responsible for extensive damage of coniferous forest infestation in Europe and North America. Since lineatin can act as lures used for mass-trapping of "T. lineatum", it is being studied to a... | https://en.wikipedia.org/wiki?curid=23186893 |
Lineatin It is suggested that lineatin is derived through oxidation and cyclization of a monoterponid precursor, but no experimental has been done on proving this route. Based on its partial structure similarity to iridoid class of terprenoids, here, a possible biosynthesis pathway was proposed and outlined in figure 2... | https://en.wikipedia.org/wiki?curid=23186893 |
Absinthin is a naturally produced triterpene lactone from the plant "Artemisia absinthium" (Wormwood). It constitutes one of the most bitter chemical agents responsible for Absinthe's distinct taste. The compound shows biological activity and has shown promise as an anti-inflammatory agent, and should not to be confuse... | https://en.wikipedia.org/wiki?curid=23189674 |
Absinthin While terpenoids like can be said to consist of isoprene "units," isoprene by itself is unstable and does not react directly. Rather, the isoprene units are transferred and reacted as diphosphates. As the nomenclature for terpenes suggests, the first precursor farnesyl diphosphate [A] contains 15 carbons, or ... | https://en.wikipedia.org/wiki?curid=23189674 |
Absinthin Formation of the sesquiterpene guaianolide monomer [D] from hydroxylation and double bond rearrangement (8,9) is then postulated to directly precede dimerization to [E] via a naturally occurring Diels-Alder reaction [10], which is likely facilitated by the associated synthase even though the reaction itself c... | https://en.wikipedia.org/wiki?curid=23189674 |
Dansyl amide is a reactive fluorescent dye that is used in biochemistry and chemistry to label substances with the fluorescent dansyl group. It is also produced as a side-product in the labelling of amino acids with dansyl chloride. | https://en.wikipedia.org/wiki?curid=23193471 |
Sea air has traditionally been thought to offer health benefits associated with its unique odor, which Victorians attributed to ozone. More recently, it has been determined that the chemical responsible for much of the odor in air along certain seashores is dimethyl sulfide, released by microbes. Salts generally do not... | https://en.wikipedia.org/wiki?curid=23202425 |
List of ASTM International standards This is a list of ASTM International standards. Standard designations usually consist of a letter prefix and a sequentially assigned number. This may optionally be followed by a dash and the last two digits of the year in which the standard was adopted. Prefix letters correspond to ... | https://en.wikipedia.org/wiki?curid=23204153 |
Glutathione-ascorbate cycle Foyer-Halliwell-Asada pathway The glutathione-ascorbate cycle is a metabolic pathway that detoxifies hydrogen peroxide (HO), which is a reactive oxygen species that is produced as a waste product in metabolism. The cycle involves the antioxidant metabolites: ascorbate, glutathione and NADPH ... | https://en.wikipedia.org/wiki?curid=23204882 |
Glutathione-ascorbate cycle Nevertheless, other enzymes (peroxidases) including peroxiredoxins and glutathione peroxidases, which use thioredoxins or glutaredoxins as reducing substrates, also contribute to HO removal in plants. | https://en.wikipedia.org/wiki?curid=23204882 |
Chemical leasing "Chemical Leasing" is a business model that intends to shift the focus from increasing sales volume of chemicals towards a value-added approach. It leads to the more efficient use of chemicals, and to the improved health and safety, environmental, and economic benefits. Find the definition and the exam... | https://en.wikipedia.org/wiki?curid=23211852 |
Chemical leasing The chemical company supplies chemicals for a specific service, such as coatings, adhesives, washing agents, solvents, and also advises the user on its best use. Built on strong cooperation between partners and based on mutual trust, it increases the efficient use of chemicals, reduces the risks to hum... | https://en.wikipedia.org/wiki?curid=23211852 |
Chemical leasing The Federal Environment Agency (UBA) of Germany proposed to promote chemical leasing in its "Sustainable Chemicals" paper. In 2004, the United Nations Industrial Development Organization (UNIDO) and the Austrian Ministry of Environment decided to jointly support chemical leasing through a number of glo... | https://en.wikipedia.org/wiki?curid=23211852 |
Chemical leasing Environmental benefits are said to include recycling of powder waste, compliance with environmental regulations, and enhancement of supply chain management. Find more successful Chemical Leasing examples here: http://chemicalleasing-toolkit.org/node/8 The reversal of the burden of proof is a key compon... | https://en.wikipedia.org/wiki?curid=23211852 |
Chemical leasing The planning stage consists of a preparatory phase, a process optimisation phase and a design phase. In this stage, discussions around the leasing model, its cost implications versus quality and environmental benefits, commercial terms, and conditions begin. A baseline audit is performed, and a report ... | https://en.wikipedia.org/wiki?curid=23211852 |
Chemical leasing It will be part of the Green Chemistry Conference 2018 within the Trio Presidency of the Council of the European Union (EU) programme, “Smart and Sustainable Europe”, held during Austria's EU Presidency. Companies and individuals are invited to submit applications for the award in three categories: cas... | https://en.wikipedia.org/wiki?curid=23211852 |
Gram per cubic centimetre The gram per cubic centimetre is a unit of density in the CGS system, commonly used in chemistry, defined as mass in grams divided by volume in cubic centimetres. The official SI symbols are g/cm, g·cm, or g cm. It is equivalent to the units gram per millilitre (g/mL) and kilogram per litre (k... | https://en.wikipedia.org/wiki?curid=23215561 |
Hantzsch–Widman nomenclature Hantzsch–Widman nomenclature, also called the extended Hantzsch–Widman system, is a type of systematic chemical nomenclature used for naming heterocyclic parent hydrides having no more than ten ring members. Some common heterocyclic compounds have retained names that do not follow the Hantz... | https://en.wikipedia.org/wiki?curid=23216525 |
Hantzsch–Widman nomenclature All of the prefixes end in "a": In (but not in some other methods of naming heterocycles), the final "a" is elided when the prefix comes before a vowel. The heteroatom is assumed to have its standard bonding number for organic chemistry while the name is being constructed. The halogens have... | https://en.wikipedia.org/wiki?curid=23216525 |
DRDC Suffield is a major Canadian military research facility located north of Suffield, Alberta and is one of eight centres making up Defence Research and Development Canada (DRDC). The research facility commenced operations on June 11, 1941 as a joint British/Canadian biological and chemical defence facility as the Ex... | https://en.wikipedia.org/wiki?curid=23218535 |
DRDC Suffield In 1974, the Defence Research Board evolved into the Research and Development Branch which was administered under the Assistant Deputy Minister Materiel of the Canadian Department of National Defence. Another reorganization followed on April 1, 2000 when the Research and Development Branch was placed unde... | https://en.wikipedia.org/wiki?curid=23218535 |
Biomarkers of exposure assessment Biomarkers are chemicals, metabolites, susceptibility characteristics, or changes in the body that relate to the exposure of an organism to a chemical. They have the ability to identify if an exposure has occurred, the route of exposure, the pathway of exposure, and the resulting effec... | https://en.wikipedia.org/wiki?curid=23222254 |
Biomarkers of exposure assessment Biomarkers of effect are the quantifiable changes that an individual endures, which indicates an exposure to a compound and may indicate a resulting health effect. For example, after exposure to DDT, an organochlorine insecticide known to cause problems in the reproductive system, a wo... | https://en.wikipedia.org/wiki?curid=23222254 |
Biomarkers of exposure assessment Without these ideal characteristics, the use of biomarkers as a strong predictor of exposure has limitations. Many different classes of compounds can be measured in different tissues and parts of the body. From breath to hair to saliva, almost every tissue in the body has been tested a... | https://en.wikipedia.org/wiki?curid=23222254 |
Limiting pressure velocity is a tribological term relating to the maximum temperature and compression that an assembly with rubbing surfaces can bear without failing.Pressure-limiting valves are a type of pressure control valve. They safeguard the system against excessive system pressure or limit the operation pressure... | https://en.wikipedia.org/wiki?curid=23226437 |
Marketing Authorisation Application (MAA) is an application submitted by a drug manufacturer seeking marketing authorisation, that is permission to bring a medicinal product (for example, a new medicine or generic medicine) to the market. MAA is part of the official procedure before the Medicines and Healthcare product... | https://en.wikipedia.org/wiki?curid=23226758 |
Colorimetry (chemical method) In physical and analytical chemistry, colorimetry or colourimetry is a technique "used to determine the concentration of colored compounds in solution." A colorimeter is a device used to test the concentration of a solution by measuring its absorbance of a specific wavelength of light (not... | https://en.wikipedia.org/wiki?curid=23228834 |
Colorimetry (chemical method) For example, the filter on a colorimeter might be set to red if the liquid is blue. A colorimeter is a device used to test the concentration of a solution by measuring its absorbance of a specific wavelength of light. To use this device, different solutions must be made, and a control (usu... | https://en.wikipedia.org/wiki?curid=23228834 |
Chaudhry Abdul Majeed (born:1937; Urdu: چودہری عبد لمجيد ) was a Pakistani nuclear chemist and a nuclear weapon and reactor expert. He is known as one of the pioneers of Pakistan's nuclear deterrent programme, and has worked closely with former PAEC Chairman Munir Ahmad Khan's plutonium reprocessing project. He rose to... | https://en.wikipedia.org/wiki?curid=23230424 |
Chaudhry Abdul Majeed Majeed also worked at the International Center for Theoretical Physics, invited by Abdus Salam, during the 1970s and early 1980s. At ICTP, Majeed taught advanced courses in chemistry and mathematics. At ICTP, he published numerous research papers in the field of Spectroscopy, neutron and particle ... | https://en.wikipedia.org/wiki?curid=23230424 |
Chaudhry Abdul Majeed There, he was the director of Radiation and Nuclear Safety Division and was omitted from the weapons development teams. He published extensively in the 1980s and 1990s on nuclear detectors and the use of x-ray diffraction, fluorescence, and crystallography to study a wide variety of materials and ... | https://en.wikipedia.org/wiki?curid=23230424 |
Polymorphs of silicon carbide Many compound materials exhibit polymorphism, that is they can exist in different structures called polymorphs. Silicon carbide (SiC) is unique in this regard as more than 250 polymorphs of silicon carbide had been identified by 2006, with some of them having a lattice constant as long as ... | https://en.wikipedia.org/wiki?curid=23239104 |
Polymorphs of silicon carbide Elements A and B do not change the orientation of the bilayer (except for possible rotation by 120°, which does not change the lattice and is ignored hereafter); the only difference between A and B is shift of the lattice. Element C, however, twists the lattice by 60°. Using those A,B,C el... | https://en.wikipedia.org/wiki?curid=23239104 |
Polymorphs of silicon carbide The polytypism of SiC makes it nontrivial to grow single-phase material, but it also offers some potential advantages - if crystal growth methods can be developed sufficiently then heterojunctions of different SiC polytypes can be prepared and applied in electronic devices. All symbols in ... | https://en.wikipedia.org/wiki?curid=23239104 |
Sand rammer A sand rammer is a piece of equipment used in foundry sand testing to make test specimen of molding sand by compacting bulk material by free fixed height drop of fixed weight for 3 times. It is also used to determine compactibility of sands by using special specimen tubes and a linear scale. consists of cal... | https://en.wikipedia.org/wiki?curid=23251097 |
Sand rammer The sand rammer machine can be used to measure compactability of prepared sand by filling the specimen tube with prepared sand so that it is level with the top of the tube. The tube is then placed under the ram head in the shallow cup and rammed three times. Compactability in percentage is then calculated f... | https://en.wikipedia.org/wiki?curid=23251097 |
Superstructure (condensed matter) In solid state physics, a superstructure is some additional structure that is superimposed on a given crystalline structure. A typical and important example is ferromagnetic ordering. In a wider sense, the term "superstructure" is applied to polymers and proteins to describe ordering o... | https://en.wikipedia.org/wiki?curid=23251878 |
Superstructure (condensed matter) In some materials, superspots will occur at positions that do not represent a simple fraction, say q=(0.5234,0,0). In this case the structure strictly speaking has lost all translational symmetry in a particular direction. This is called an incommensurate structure. There are basically... | https://en.wikipedia.org/wiki?curid=23251878 |
Superstructure (condensed matter) In some transitions a number of atoms occupying crystallographic positions that were originally equivalent will move away slightly from their ideal positions according to a certain pattern. This pattern or repeat motif may span multiple unit cells. The cause of this phenomenon is the s... | https://en.wikipedia.org/wiki?curid=23251878 |
Genosome A genosome (also known as a lipoplex) is a lipid and DNA complex that is used to deliver genes. It can be a form of non-viral gene therapy as the complex does not require any components of a virus in order to transport genetic material. In presence of CT-DNA, genosomes can form through surface electrostatic in... | https://en.wikipedia.org/wiki?curid=23257752 |
Southern Research is a not-for-profit US 501(c)(3) research organization that conducts basic and applied research for commercial and non-commercial organizations across four divisions: Drug Development, Drug Discovery, Energy & Environment, and Engineering. was founded in Birmingham, Alabama, on October 11, 1941 by Tho... | https://en.wikipedia.org/wiki?curid=23262740 |
Southern Research In celebration of this milestone the director of National Institutes of Health (NIH), Francis Collins, produced a video congratulating the organization on its anniversary. In May 2019, Arthur J. Tipton stepped down as the president and CEO of Southern Research. Previously, he worked in the pharmaceuti... | https://en.wikipedia.org/wiki?curid=23262740 |
Southern Research Their current service areas include: High Throughput Screening (THS), Chemistry, Oncology, Infectious Disease, Neuroscience, and the Center for Neuromolecular Research. is a founding member of the Alabama Drug Discovery Alliance (ADDA) along with the University of Alabama at Birmingham School of Medic... | https://en.wikipedia.org/wiki?curid=23262740 |
Southern Research Clofarabine, a second-generation nucleoside analogue received accelerated approval from the US FDA at the end of 2004 for the treatment of paediatric patients 1–21 years old with relapsed or refractory acute lymphoblastic leukaemia after at least two prior regimens. It is the first such drug to be app... | https://en.wikipedia.org/wiki?curid=23262740 |
Southern Research was one of eight extramural institutes selected for this initiative along with the Broad Institute, Sanford-Burnham Medical Research Institute, Johns Hopkins University, Scripps Research Institute, Vanderbilt University, University of New Mexico and the University of Kansas. In addition the MLP initia... | https://en.wikipedia.org/wiki?curid=23262740 |
Southern Research Current areas include: Non destructive evaluation of materials; Chemistry and Physics of Materials; Electrical, EO/IR, and Mechanical Systems; Hypersonic Structures; Space Structures Characterization; Mechanical Testing of Materials Structures and Components; and Thermal Testing of Materials. Michael ... | https://en.wikipedia.org/wiki?curid=23262740 |
Specific ion interaction theory Specific ion Interaction Theory (SIT theory) is a theory used to estimate single-ion activity coefficients in electrolyte solutions at relatively high concentrations. It does so by taking into consideration "interaction coefficients" between the various ions present in solution. Interact... | https://en.wikipedia.org/wiki?curid=23263587 |
Specific ion interaction theory For example, where the square brackets signify a concentration and γ is an activity coefficient. Thus the equilibrium constant can be expressed as a product of a concentration quotient and an activity coefficient quotient. Taking logarithms. "K" is the hypothetical value that the equilib... | https://en.wikipedia.org/wiki?curid=23263587 |
Specific ion interaction theory The activity coefficient of the "j"th ion in solution is written as γ when concentrations are on the molal concentration scale and as "y" when concentrations are on the molar concentration scale. (The molality scale is preferred in thermodynamics because molal concentrations are independ... | https://en.wikipedia.org/wiki?curid=23263587 |
Specific ion interaction theory The interaction coefficients are then determined by fitting to the observed equilibrium constant values. The procedure also provides the value of "K" at infinite dilution. It is not limited to monobasic acids. and can also be applied to metal complexes. The SIT and Pitzer approaches have... | https://en.wikipedia.org/wiki?curid=23263587 |
Dynamic structure factor In condensed matter physics, the dynamic structure factor (or dynamical structure factor) is a mathematical function that contains information about inter-particle correlations and their time evolution. It is a generalization of the structure factor that considers correlations in both space "an... | https://en.wikipedia.org/wiki?curid=23264409 |
Dynamic structure factor The van Hove function for a spatially uniform system containing formula_14 point particles is defined as: It can be rewritten as: In an isotropic sample "G"("r","t") depends only on the distance "r" and is the time dependent radial distribution function. | https://en.wikipedia.org/wiki?curid=23264409 |
Optical transfection is the process of introducing nucleic acids into cells using light. Typically, a laser is focussed to a diffraction limited spot (~1 µm diameter) using a high numerical aperture microscope objective. The plasma membrane of a cell is then exposed to this highly focussed light for a small amount of t... | https://en.wikipedia.org/wiki?curid=23278041 |
Optical transfection The original meaning of transfection was "infection by transformation", "i.e." introduction of DNA (or RNA) from a prokaryote-infecting virus or bacteriophage into cells, resulting in an infection. Because the term transformation had another sense in animal cell biology (a genetic change allowing l... | https://en.wikipedia.org/wiki?curid=23278041 |
Optical transfection Like many cellular perturbations, when a single cell or group of cells is treated with a laser, three things can happen: the cell dies (overdose), the cell membrane is permeabilised, substances enter, and the cell recovers (therapeutic dose), or nothing happens (underdose). There have been suggesti... | https://en.wikipedia.org/wiki?curid=23278041 |
Optical transfection A typical optical transfection protocol is as follows: 1) Build an optical tweezers system with a high NA objective 2) Culture cells to 50-60% confluency 3) Expose cells to at least 10 µg/ml of plasmid DNA 4) Dose the plasma membrane of each cell with 10-40 ms of focussed laser, at a power of <100 ... | https://en.wikipedia.org/wiki?curid=23278041 |
Organoindium chemistry is the chemistry of compounds containing In-C bonds. The main application of organoindium chemistry is in the preparation of semiconducting components for microelectronic applications. The area is also of some interest in organic synthesis. Most organoindium compounds feature the In(III) oxidatio... | https://en.wikipedia.org/wiki?curid=23281496 |
Organoindium chemistry IMAs proceed in two steps: first, indium reacts with the allyl halide, give an allyl-In(III) intermediate, second, this allyl indide reacts with an electrophile: <br> <br> The reaction is conducted under the conditions of a Barbier reaction where the indium, allyl halide, and electrophile are all... | https://en.wikipedia.org/wiki?curid=23281496 |
Organoindium chemistry The regioselectivity of allylation mediated by indium in water is dependent on the steric effects of the substituents on both the intermediate and carbonyl. An α-attack from the nucleophile (at the position bearing the halogen) is distinguishable from a γ-attack (at the double bond) by inspecting... | https://en.wikipedia.org/wiki?curid=23281496 |
Organoindium chemistry The addition of allylindium reagents to electrophilic hydrazones, illustrated below, has been reported to synthesize only one enantiomer of the chiral product with up to 97% selectivity using binol as a chiral additive. Similarly, a chiral amino alcohol allows for extremely high enantioselectivit... | https://en.wikipedia.org/wiki?curid=23281496 |
List of molecular graphics systems This is a list of software systems that are used for visualizing macromolecules. The tables below indicate which types of data can be visualized in each system: | https://en.wikipedia.org/wiki?curid=23284727 |
Rubidium-82 (Rb) is a radioactive isotope of rubidium. Rb is widely used in myocardial perfusion imaging. This isotope undergoes rapid uptake by myocardiocytes, which makes it a valuable tool for identifying myocardial ischemia in Positron Emission Tomography (PET) imaging. Rb is used in the pharmaceutical industry and... | https://en.wikipedia.org/wiki?curid=23285206 |
Rubidium-82 is produced through beta plus decay from its parent nucleus, strontium-82. The generator contains accelerator produced Sr adsorbed on stannic oxide in a lead-shielded column and provides a means for obtaining sterile nonpyrogenic solutions of RbCl(Halide salt form capable of injection). The amount (millicur... | https://en.wikipedia.org/wiki?curid=23285206 |
Rubidium-82 Rubidium is rapidly extracted from the blood and is taken up by the myocardium in relation to myocardial perfusion, which requires energy for myocardial uptake through Na/K-ATPase similar to thallium-201. Rb is capable of producing a clear perfusion image similar to single photon emission computed tomograph... | https://en.wikipedia.org/wiki?curid=23285206 |
Rubidium-82 Recently it has been shown that neuroendocrine tumor metastasis can be imaged with Rb due to its ability to quantify myocardial blood flow (MBF) during rest and pharmacological stress, commonly performed with adenosine. One of the main advantages of Rb is its availability in nuclear medicine departments. Th... | https://en.wikipedia.org/wiki?curid=23285206 |
Rubidium-82 Another limitation of this isotope is that it needs a dedicated PET/CT camera, and in places like Europe where a Sr/Rb generator is still yet to be approved that can be hard to find. | https://en.wikipedia.org/wiki?curid=23285206 |
Levosulpiride Levosulpiride, sold under the Brand name Neoprad is a substituted benzamide antipsychotic, reported to be a selective antagonist of dopamine D receptor activity on both central and peripheral levels. It is an atypical neuroleptic and a prokinetic agent. is also claimed to have mood elevating properties. C... | https://en.wikipedia.org/wiki?curid=23294687 |
Thallium oxide Thallium has several oxides: | https://en.wikipedia.org/wiki?curid=23298329 |
Cantera (software) Cantera is an open-source chemical kinetics software used for solving chemically reacting laminar flows. It has been used as a third-party library in external reacting flow simulation codes, such as FUEGO and CADS, using Fortran, C++, etc. to evaluate properties and chemical source terms that appear ... | https://en.wikipedia.org/wiki?curid=23305579 |
List of microscopy visualization systems This is a list of software systems that are used for visualizing microscopy data. For each software system, the table below indicates which type of data can be displayed: EM = Electron microscopy; MG = Molecular graphics; Optical = Optical microscopy. | https://en.wikipedia.org/wiki?curid=23320406 |
Shawcor Ltd is a Canadian oilfield services company, based in Toronto, Ontario, and listed on the Toronto Stock Exchange. It specializes in providing services to the pipeline sector of the oil and gas market. It is one of the largest pipe-coating providers in the world. In 2017, it had a revenue of $1.56 billion. It wa... | https://en.wikipedia.org/wiki?curid=23325548 |
Shawcor operates through 5 business units: Pipeline Performance (Bredero-Shaw, Socotherm, Canusa-CPS, Dhatec), Composite Production Systems (FlexPipe, Global Poly, FlexFlow, ZCL/Xerxes), Integrity Management (Shaw Pipeline Services, Inspection Services, Lake Superior Consulting), Oilfield Asset Management (Guardian, CS... | https://en.wikipedia.org/wiki?curid=23325548 |
Wet sulfuric acid process The wet sulfuric acid process (WSA process) is one of the key gas desulfurization processes on the market today. Since the Danish catalyst company Haldor Topsoe introduced and patented this technology in the late 1980s, it has been recognised as an efficient process for recovering sulfur from ... | https://en.wikipedia.org/wiki?curid=23338454 |
Wet sulfuric acid process Example 1: Example 2: A sulfur plant in China will be built in connection with an ammonia plant, producing 500 kilotons/annum of ammonia for fertilizer production The WSA process can also be used for production of sulfuric acid from sulfur burning or for regeneration of the spent acid from e.g... | https://en.wikipedia.org/wiki?curid=23338454 |
Wet sulfuric acid process 50% of the world’s sulfuric acid production is used in fertilizer production, mainly to convert phosphates to water-soluble forms, according to the Fertilizer Manual, published jointly by the United Nations Industrial Development Organization (UNIDO) and the International Fertilizer Developmen... | https://en.wikipedia.org/wiki?curid=23338454 |
Amasa Stone Bishop (1921 – May 21, 1997) was an American nuclear physicist specializing in fusion physics. He received his B.S. in Physics from the California Institute of Technology in 1943. From 1943 to 1946 he was a member of the staff of Radiation Laboratory at the Massachusetts Institute of Technology, where he wa... | https://en.wikipedia.org/wiki?curid=23348207 |
Amasa Stone Bishop In 1970 Amasa joined the United Nations in Europe as director of environment of the United Nations Economic Commission for Europe. During this position he worked with scientists and diplomats to create solutions for various environmental problems. He left this position to retire in 1980. Amasa died o... | https://en.wikipedia.org/wiki?curid=23348207 |
Flux pumping is a method for magnetising superconductors to fields in excess of 15 teslas. The method can be applied to any type II superconductor and exploits a fundamental property of superconductors. That is their ability to support and maintain currents on the length scale of the superconductor. Conventional magnet... | https://en.wikipedia.org/wiki?curid=23355682 |
Flux pumping Instead, it consists of bound "pairs" of electrons known as Cooper pairs. This pairing is caused by an attractive force between electrons from the exchange of phonons. Due to quantum mechanics, the energy spectrum of this Cooper pair fluid possesses an "energy gap", meaning there is a minimum amount of ene... | https://en.wikipedia.org/wiki?curid=23355682 |
Flux pumping This field induces current according to Faraday's law of induction. As long as the direction of motion of the magnetic wave is constant then the current induced will always be in the same sense and successive waves will induce more and more current. Traditionally the magnetic wave would be generated either... | https://en.wikipedia.org/wiki?curid=23355682 |
Flux pumping The Meissner effect is sometimes confused with the kind of diamagnetism one would expect in a perfect electrical conductor: according to Lenz's law, when a "changing" magnetic field is applied to a conductor, it will induce an electric current in the conductor that creates an opposing magnetic field. In a ... | https://en.wikipedia.org/wiki?curid=23355682 |
Flux pumping In the same year, Josephson made the important theoretical prediction that a supercurrent can flow between two pieces of superconductor separated by a thin layer of insulator. This phenomenon, now called the Josephson effect, is exploited by superconducting devices such as SQUIDs. It is used in the most ac... | https://en.wikipedia.org/wiki?curid=23355682 |
Flux pumping The potential of superconducting coils and bulk melt-processed YBCO single domains to maintain significant magnetic fields at cryogenic temperatures makes them particularly attractive for a variety of engineering applications including superconducting magnets, magnetic bearings and motors. It has already b... | https://en.wikipedia.org/wiki?curid=23355682 |
Flux pumping Thirdly, ex situ methods would require the machine to be assembled both cold and pre-magnetized and would offer significant design difficulties. Until room temperature superconductors can be prepared, the most efficient design of machine will therefore be one in which an in situ magnetizing fixture is incl... | https://en.wikipedia.org/wiki?curid=23355682 |
Flux pumping Clearly if the magnetisation fixture is not to occupy more room than the puck itself then a very high activation current would be required and either constraint makes in situ magnetization a very difficult proposition. What is required for in situ magnetisation is a magnetisation method in which a relative... | https://en.wikipedia.org/wiki?curid=23355682 |
The Salters School of Chemistry is a branch of Christ's Hospital that teaches mainly chemistry to all Christ's Hospital pupils. It was founded by Samuel Porter and the Worshipful Company of Salters (one of the livery company that sponsors children to study at CH) in 1993. It is currently Christ's Hospital's Chemistry D... | https://en.wikipedia.org/wiki?curid=23368656 |
Deflagration to detonation transition (DDT) refers to a phenomenon in ignitable mixtures of a flammable gas and air (or oxygen) when a sudden transition takes place from a deflagration type of combustion to a detonation type of explosion. A deflagration is characterized by a subsonic flame propagation velocity, typical... | https://en.wikipedia.org/wiki?curid=23375296 |
Deflagration to detonation transition Under certain conditions, mainly in terms of geometrical conditions (such as partial confinement and many obstacles in the flame path that cause turbulent flame eddy currents), a subsonic flame may accelerate to supersonic speed, transitioning from deflagration to detonation. The e... | https://en.wikipedia.org/wiki?curid=23375296 |
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