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* 2008 Spanish Royal Society of Chemistry Young Investigator Award
* 2011 Thieme Chemistry Journals Award
* 2011 Chemical Society Review Emerging Investigator Award
* 2013 Swiss Chemical Society Werner Prize
* 2019 Royal Society of Chemistry Organometallic Chemistry
*2021 Margaret Faul Women in Chemistry Award | 0 | Organic Chemistry |
For quasi-static and reversible processes, the first law of thermodynamics is:
where δQ is the heat supplied to the system and δW is the work done by the system. | 7 | Physical Chemistry |
In previous stages acetyl-CoA is transferred from the mitochondria to the cytoplasm where fatty acid synthase resides. The acetyl-CoA is transported as a citrate, which has been previously formed in the mitochondrial matrix from acetyl-coA and oxaloacetate. This reaction usually initiates the citric acid cycle, but whe... | 1 | Biochemistry |
In isolated systems it is consistently observed that as time goes on internal rearrangements diminish and stable conditions are approached. Pressures and temperatures tend to equalize, and matter arranges itself into one or a few relatively homogeneous phases. A system in which all processes of change have gone practic... | 7 | Physical Chemistry |
Wittig's contributions also include the preparation of phenyllithium and the discovery of the 1,2-Wittig rearrangement and the 2,3-Wittig rearrangement.
Wittig was well known in the chemistry community for being a consummate experimenter and observer of chemical transformations, while caring very little for the theoret... | 4 | Stereochemistry |
Current research regarding Botrytis-induced kinase1 aims to determine how BIK1 interacts with MAPK pathway proteins as well as with the OXI1 kinase. Also, studies are being conducted to determine the relationship between BIK1 and the phosphorylizing homolog kinases PEPR1 and PEPR2. Though it is believed that PEPR1 and ... | 1 | Biochemistry |
Cegelski's work has earned her several awards:
* Presidential Early Career Award for Scientists and Engineers (PECASE)
*Burroughs Wellcome Career Award at the Scientific Interface, for "Mapping the structural and functional landscape of the microbial extracellular matrix."
* 2010 NIH Director's New Innovator Award, for... | 7 | Physical Chemistry |
In chemistry, an acid dissociation constant (also known as acidity constant, or acid-ionization constant; denoted ) is a quantitative measure of the strength of an acid in solution. It is the equilibrium constant for a chemical reaction
known as dissociation in the context of acid–base reactions. The chemical species H... | 7 | Physical Chemistry |
In 1998 the consumption of phosphonates was 56,000 tons worldwide – 40,000 tons in the US, 15,000 tons in Europe and less than 800 tons in Japan. The demand of phosphonates grows steadily at 3% annually. | 0 | Organic Chemistry |
The first transcriptome studies were based on microarray techniques (also known as DNA chips). Microarrays consist of thin glass layers with spots on which oligonucleotides, known as "probes" are arrayed; each spot contains a known DNA sequence.
When performing microarray analyses, mRNA is collected from a control and ... | 1 | Biochemistry |
The Swedish assay office, the SP Technical Research Institute of Sweden, is in Borås. The assay office is privatized and the concession, given to the Inspecta Corporation, is an independent, international qualification requirements fulfilling inspection, testing, measurement and certification services provider. Inspect... | 3 | Analytical Chemistry |
When the incoming field is very intense , the interaction of the electron with the electromagnetic field is completely equivalent to the interaction of the electron with multiple photons, with no need of explicitly quantize the electromagnetic field of the incoming low-energy radiation. While the interaction with the r... | 7 | Physical Chemistry |
EPIC-seq enables the subclassification of NSCLC into histological subtypes such as lung adenocarcinoma (LUAD) and lung squamous cell carcinoma (LUSC). EPIC-seq can also aid with the classification of cell-of-origin (COO) subtypes in DLBCL. By analyzing epigenetic and transcriptional signatures, EPIC-seq-derived classif... | 1 | Biochemistry |
*Pacey, A.J. & Fisher, S.J. (1967) "Daniel Bernoulli and the vis viva of compressed air", The British Journal for the History of Science 3 (4), pp. 388–392,
*British Transport Commission (1957) Handbook for Railway Steam Locomotive Enginemen, London : B.T.C., p. 81, (facsimile copy publ. Ian Allan (1977), ) | 7 | Physical Chemistry |
Infrared photodissociation spectroscopy maintains a powerful capability to study bond energies of coordination complexes. IRPD can measure varying bond energies of compounds, including dative bonds and coordination energies of molecular clusters. Structural information about analytes can acquired by using mass selectiv... | 7 | Physical Chemistry |
When a swimmer enters a pool, they add up to one billion organisms to the water. Chlorination kills all organisms harmful to swimmers such as those that cause ear infections and athlete's foot. The advantages of electrochlorination in this process are as follows:
*Not irritating to skin or soft tissue.
*Active in small... | 7 | Physical Chemistry |
Hart graduated from MIT with a bachelors degree in geology in 1956 and a masters degree in geochemistry in 1957 from Caltech. In 1960 he received his doctorate in geochemistry from MIT with thesis Mineral ages and metamorphism under the supervision of Patrick M. Hurley. After a year as a Carnegie Fellow, Hart was from ... | 9 | Geochemistry |
Chromatographic assays measure product formation by separating the reaction mixture into its components by chromatography. This is usually done by high-performance liquid chromatography (HPLC), but can also use the simpler technique of thin layer chromatography. Although this approach can need a lot of material, its se... | 1 | Biochemistry |
The amount of electric charge (quantity of electricity) passed through the cell can easily be determined by measuring the change in mass of either electrode and calculating:
where:
* is the quantity of electricity (coulombs)
* is the mass transported (gm)
* is the charge of the copper ions, equal to +2
* is the Faraday... | 7 | Physical Chemistry |
Immunoturbidimetry is an important tool in the broad diagnostic field of clinical chemistry. It is used to determine serum proteins not detectable with classical clinical chemistry methods. Immunoturbidimetry uses the classical antigen-antibody reaction. The antigen-antibody complexes aggregate to form particles that c... | 7 | Physical Chemistry |
It has been discovered that this protein has a catalytic activity, in other words, it has the ability to increase the speed of chemical reactions which would not occur so fast. It is known to catalysis the following reaction (which requires the following cofactor: Mg(2+)):
ATP + RNA(n) ⇄ ... | 1 | Biochemistry |
Kanu was the first member of his family to attend university. He attended University of Sierra Leone, where he studied chemistry in Fourah Bay College. He was involved with track and field as an undergraduate student. Kanu was awarded a Commonwealth Scholarship, and moved from Sierra Leone to Manchester for his graduat... | 3 | Analytical Chemistry |
Escitalopram is sold under many brand names worldwide such as Cipralex, Lexapro, Lexam, Mozarin, Aciprex, Depralin, Ecytara, Elicea, Gatosil, Nexpram, Nexito, Nescital, Szetalo, Stalopam, Pramatis, Betesda, Scippa and Rexipra. | 4 | Stereochemistry |
In order to isolate clones that contain regions of interest from a library, the library must first be screened. One method of screening is hybridization. Each transformed host cell of a library will contain only one vector with one insert of DNA. The whole library can be plated onto a filter over media. The filter and ... | 1 | Biochemistry |
In organosulfur chemistry, a Bunte salt is an archaic name for salts with the formula RSSONa. They are also called S-alkylthiosulfates or S-arylthiosulfates. These compounds are typically derived from alkylation on the pendant sulfur of sodium thiosulfate:
:RX + NaSO → Na[OSR] + NaX
They have been used as inte... | 0 | Organic Chemistry |
On September 5, 2019, the United States Food and Drug Administration (US FDA) announced that 10 out of 18, or 56% of the samples of vape liquids sent in by states, linked to recent vaping related lung disease outbreak in the United States, tested positive for vitamin E acetate which had been used as a thickening agent ... | 7 | Physical Chemistry |
PRR3, PRR5, PRR7 and PRR9 participate in the repressilator of a negative autoregulatory feedback loop that synchronizes to environmental inputs. The repressilator has a morning, evening, and night loop that are regulated in part by the pseudo-response regulator proteins' interactions with CCA1 and LHY. CCA1 and LHY exh... | 1 | Biochemistry |
Fluorescent X-rays are scattered by atoms in a sample and provide the object wave, which is referenced to non-scattered X-rays. A holographic pattern is recorded by scanning a detector around the sample, which allows researchers to investigate the local 3D structure around a specific element in a sample. | 7 | Physical Chemistry |
Alkoxy radicals which contain unpaired electrons on an oxygen atom display a higher k/k compared to alkyl radicals. The oxygen has a partial negative charge which removes electron density from the donor carbon atom thereby facilitating hydrogen abstraction. The rate of disproportionation is also aided by the more elect... | 0 | Organic Chemistry |
The first frozen zoo was established at the San Diego Zoo by pathologist Kurt Benirschke in 1972. At the time there was no technology available to make use of the collection, but Benirschke believed such technology would be developed in the future. The frozen zoo idea was later supported in Gregory Benford's 1992 paper... | 1 | Biochemistry |
Site-directed mutagenesis is used to mutate specific bases (and thus amino acids). This is critical to investigate the function of specific amino acids in a protein, e.g. in the active site of an enzyme. | 1 | Biochemistry |
When applied to existing constructions, the lifetime can be extended considerably. If no macroscopically visible cracks are present, HiFIT is a very suitable remediation tool.
With timely remediation of existing structures there is practically no difference to the life of new treated welds. This gives the potential to ... | 8 | Metallurgy |
The process involves an electron (hole) incident on the interface from the normal state material at energies less than the superconducting energy gap. The incident electron (hole) forms a Cooper pair in the superconductor with the retroreflection of a hole (electron) of opposite spin and velocity but equal momentum to ... | 7 | Physical Chemistry |
Catabolism () is the set of metabolic pathways that breaks down molecules into smaller units that are either oxidized to release energy or used in other anabolic reactions. Catabolism breaks down large molecules (such as polysaccharides, lipids, nucleic acids, and proteins) into smaller units (such as monosaccharides, ... | 1 | Biochemistry |
Conjugating TNP to ATP renders this nucleotide triphosphate fluorescent and colored whilst allowing it to retain its biological activity. TNP-ATP is thus a fluorescent analog of ATP. This conjugation is very useful in providing information about interactions between ATP and an ATP-binding protein because TNP-ATP inter... | 7 | Physical Chemistry |
Euglenophytes are a group of common flagellated protists that contain chloroplasts derived from a green alga. Euglenophyte chloroplasts have three membranes—it is thought that the membrane of the primary endosymbiont was lost, leaving the cyanobacterial membranes, and the secondary host's phagosomal membrane. Euglenoph... | 5 | Photochemistry |
The Le Bail method extracts intensities (I) from powder diffraction data. This is done in order to find intensities that are suitable to determine the atomic structure of a crystalline material and to refine the unit cell and has the added advantage of checking phase-purity. Generally, the intensities of powder diffrac... | 3 | Analytical Chemistry |
The creatine phosphate shuttle is an intracellular energy shuttle which facilitates transport of high energy phosphate from muscle cell mitochondria to myofibrils. This is part of phosphocreatine metabolism. In mitochondria, Adenosine triphosphate (ATP) levels are very high as a result of glycolysis, TCA cycle, oxidati... | 1 | Biochemistry |
SAC solders have outperformed high-Pb solders C4 joints in ceramic ball grid array (CBGA) systems, which are ball-grid arrays with a ceramic substrate. The CBGA showed consistently better results in thermal cycling for Pb-free alloys. The findings also show that SAC alloys are proportionately better in thermal fatigue ... | 8 | Metallurgy |
* In Chesapeake Shores, the O'Brien family lives in a small town in the Bay, not far from Baltimore.
* In MeatEater by Steven Rinella, Season 8, Episode 3-4 "Ghosts of the Chesapeake" features the Chesapeake Bay eastern shore. | 2 | Environmental Chemistry |
Donnan dialysis is a separation process which is used to exchange ions between two aqueous solutions which are separated by a CEM or an AEM membrane. In the case of a cation exchange membrane separating two solutions with different acidity, protons (H) go through the membrane to the less acidic side. This induces an el... | 1 | Biochemistry |
Cryopreservation can be performed as oocyte cryopreservation before fertilisation, or as embryo cryopreservation after fertilisation.
The Rand Consulting Group has estimated there to be 400,000 frozen embryos in the United States in 2006. The advantage is that patients who fail to conceive may become pregnant using suc... | 1 | Biochemistry |
As shown in Scheme 7, Ojima lactam 7.1 reacted with alcohol 7.2 with sodium bis(trimethylsilyl)amide as a base. This alcohol is the triethylsilyl ether of the naturally occurring compound baccatin III. The related compound, 10-deacetylbaccatin III, is found in Taxus baccata, also known as the European Yew, in concentra... | 0 | Organic Chemistry |
A thermal oscillator is a system where conduction along thermal gradients overshoots thermal equilibrium, resulting in thermal oscillations where parts of the system oscillate between being colder and hotter than average. | 7 | Physical Chemistry |
Through a variety of physical and chemical processes, chemical elements change in concentration and move around in what are called geochemical cycles. An understanding of these changes requires both detailed observation and theoretical models. Each chemical compound, element or isotope has a concentration that is a fun... | 9 | Geochemistry |
Nitrobenzene can be obtained by treating benzenediazonium fluoroborate with sodium nitrite in presence of copper. Alternatively, the diazotisation of the aniline can be conducted in presence of cuprous oxide, which generates cuprous nitrite in situ: | 0 | Organic Chemistry |
Independent of the developments for electrons in vacuum, at about the same time the components of quantum mechanics were being assembled. In 1924 Louis de Broglie in his PhD thesis Recherches sur la théorie des quanta introduced his theory of electron waves. He suggested that an electron around a nucleus could be thoug... | 7 | Physical Chemistry |
The table below essentially simplifies the ideal gas equation for a particular processes, thus making this equation easier to solve using numerical methods.
A thermodynamic process is defined as a system that moves from state 1 to state 2, where the state number is denoted by subscript. As shown in the first column of ... | 7 | Physical Chemistry |
Androstanedione, also known as 5α-androstanedione or as 5α-androstane-3,17-dione, is a naturally occurring androstane (5α-androstane) steroid and an endogenous metabolite of androgens like testosterone, dihydrotestosterone (DHT), dehydroepiandrosterone (DHEA), and androstenedione. It is the C5 epimer of etiocholanedion... | 1 | Biochemistry |
Aminoallyl nucleotide is a nucleotide with a modified base containing an allylamine. They are used in post-labeling of nucleic acids by fluorescence detection in microarray. They are reactive with N-Hydroxysuccinimide ester group which helps attach a fluorescent dye to the primary amino group on the nucleotide. These n... | 1 | Biochemistry |
For each equilibrium involving a host, H, and a guest G
the equilibrium constant, , is defined as
The values of the free concentrations, and are obtained by solving the equations of mass balance with known or estimated values for the stability constants.
Then, the concentrations of each complex species may also be c... | 6 | Supramolecular Chemistry |
THF is deprotonated by butyllithium, especially in the presence of TMEDA, by loss of one of four protons adjacent to oxygen. This process, which consumes butyllithium to generate butane, induces a ring opening to give enolate of acetaldehyde and ethylene. Therefore, reactions of BuLi in THF are typically conducted at l... | 0 | Organic Chemistry |
Photogeochemistry merges photochemistry and geochemistry into the study of light-induced chemical reactions that occur or may occur among natural components of Earth's surface. The first comprehensive review on the subject was published in 2017 by the chemist and soil scientist Timothy A Doane, but the term photogeoche... | 5 | Photochemistry |
Early quantum models included a soliton pair creation model by Maki and a proposal by John Bardeen that condensed CDW electrons tunnel coherently through a tiny pinning gap, fixed at ±k unlike the Peierls gap. Makis theory lacked a sharp threshold field and Bardeen only gave a phenomenological interpretation of the thr... | 7 | Physical Chemistry |
The melting point of ice is at standard pressure; however, pure liquid water can be supercooled well below that temperature without freezing if the liquid is not mechanically disturbed. It can remain in a fluid state down to its homogeneous nucleation point of about . The melting point of ordinary hexagonal ice falls ... | 2 | Environmental Chemistry |
The major appeal of biodegradation is that, in theory, the polymer will be completely consumed in the environment without needing complex waste management and that the products of this will be non-toxic.
Most common plastics biodegrade very slowly, sometimes to the extent that they are considered non-biodegradable. As... | 7 | Physical Chemistry |
In diazo transfer certain carbon acids react with tosyl azide in the presence of a weak base like triethylamine or DBU. The byproduct is the corresponding tosylamide (p-toluenesulfonamide). This reaction is also called the Regitz diazo transfer. Examples are the synthesis of tert-butyl diazoacetate and diazomalonate.... | 0 | Organic Chemistry |
Cheon Jinwoo is the H.G. Underwood Professor at Yonsei University and the Director of the Center for Nanomedicine, Institute for Basic Science (IBS). As a leading chemist in inorganic materials chemistry and nanomedicine Cheon and his group research chemical principles for the preparation of complex inorganic materials... | 0 | Organic Chemistry |
Sometimes, stereoelectronic effects can win over extreme steric clash. In a similar cyclobutene ring-opening reaction, the trimethylsilyl group, which is very bulky, still favors the inward rotation. The stereoelectronic effect, which is the interaction shown above when the acceptor orbital is the σ*(Si–CH), appears to... | 4 | Stereochemistry |
A genetically modified organism (GMO) is any organism whose genetic material has been altered using genetic engineering techniques. The exact definition of a genetically modified organism and what constitutes genetic engineering varies, with the most common being an organism altered in a way that "does not occur natura... | 1 | Biochemistry |
Humic substances (HS) are coloured recalcitrant organic compounds naturally formed during long-term decomposition and transformation of biomass residues. The colour of humic substances varies from yellow to brown to black. Humic substances represent the major part of organic matter in soil, peat, coal and sediments and... | 9 | Geochemistry |
Derived structure parameters that describe constant properties of the overall feedback control system may add useful information for special purposes, e.g. in diagnosis of nonthyroidal illness syndrome or central hypothyroidism. | 1 | Biochemistry |
After initial encapsulation the remaining molecules form connections between the individual micelles to form a network within the aqueous media called a hydrogel, creating a diffuse and relatively constant concentration of the encapsulated particle within the gel. The formation of hydrogels is a phenomenon observed in ... | 7 | Physical Chemistry |
In the quantum theory of the electromagnetic field, classical wave amplitudes and are replaced by operators and that satisfy:
The classical quantity appearing in the classical expression for the energy of a field mode is replaced in quantum theory by the photon number operator . The fact that:
implies that quantum... | 7 | Physical Chemistry |
RNA editing is the insertion, deletion, and substitution of nucleotides in a mRNA transcript prior to translation to protein. The highly oxidative environment inside chloroplasts increases the rate of mutation so post-transcription repairs are needed to conserve functional sequences. The chloroplast editosome substitut... | 5 | Photochemistry |
Prostaglandin E is a family of naturally occurring prostaglandins that are used as medications.
Types include:
* Prostaglandin E also known as alprostadil
* Prostaglandin E also known as dinoprostone
Both types are on the World Health Organization's List of Essential Medicines.
Prostaglandin E play an important role in... | 1 | Biochemistry |
Photosynthesis is the natural process that converts CO using light to produce hydrocarbon compounds such as sugar. The depletion of fossil fuels encourages scientists to find alternatives to produce hydrocarbon compounds. Artificial photosynthesis is a promising method mimicking the natural photosynthesis to produce s... | 5 | Photochemistry |
From the late 1950s through 1977, Westinghouse Electric used PCBs in the manufacture of capacitors in its Bloomington, Indiana, plant. Reject capacitors were hauled and dumped in area salvage yards and landfills, including Bennetts Dump, Neals Landfill and Lemon Lane Landfill. Workers also dumped PCB oil down factory d... | 2 | Environmental Chemistry |
The French iron industry lagged behind Britain and Belgium in the early 19th century. After 1850 it also lagged behind Germany and Luxembourg. Its industry comprised too many small, inefficient firms. 20th century growth was not robust, due more to traditional social and economic attitudes than to inherent geographic,... | 8 | Metallurgy |
NHCs are widely used as ancillary ligand in organometallic chemistry. One practical application is the ruthenium-based Grubbs' catalyst and NHC-Palladium Complexes for cross-coupling reactions. NHC-metal complexes, specifically Ag(I)-NHC complexes have been widely tested for their biological applications. | 0 | Organic Chemistry |
Fans generate noise from the rapid flow of air around blades and obstacles causing vortexes, and from the motor. Fan noise is roughly proportional to the fifth power of fan speed; halving speed reduces noise by about 15 dB.
The perceived loudness of fan noise also depends on the frequency distribution of the noise. Thi... | 7 | Physical Chemistry |
LINE elements propagate by a so-called target primed reverse transcription mechanism (TPRT), which was first described for the R2 element from the silkworm Bombyx mori.
ORF2 (and ORF1 when present) proteins primarily associate in cis with their encoding mRNA, forming a ribonucleoprotein (RNP) complex, likely composed o... | 1 | Biochemistry |
LaAlO doped with neodymium gave laser emission at 1080 nm. Mixed methylammonium lead halide () cells fashioned into optically pumped vertical-cavity surface-emitting lasers (VCSELs) convert visible pump light to near-IR laser light with a 70% efficiency. | 3 | Analytical Chemistry |
It is also used in molecular biology as an oxidising agent, for example to oxidise free thiols to form disulfide bonds in proteins. | 0 | Organic Chemistry |
The G subunit will eventually hydrolyze the attached GTP to GDP by its inherent enzymatic activity, allowing it to re-associate with G and starting a new cycle. A group of proteins called Regulator of G protein signalling (RGSs), act as GTPase-activating proteins (GAPs), are specific for G subunits. These proteins acce... | 1 | Biochemistry |
Silicon carbide, dissolved in a basic oxygen furnace used for making steel, acts as a fuel. The additional energy liberated allows the furnace to process more scrap with the same charge of hot metal. It can also be used to raise tap temperatures and adjust the carbon and silicon content. Silicon carbide is cheaper than... | 8 | Metallurgy |
* In 2021 Kubista's organization, TATAA was on Sweden Technology Fast 50 list
* In 2019, Global Health & Pharma recognized and awarded TATAA as the "Best Nucleic Acid Analysis Service Provider – Europe."
* In 2013 TATAA Biocenter was honored with the Frost & Sullivan Award for Customer Value Leadership for their outsta... | 1 | Biochemistry |
Ye became interested in science fiction as a child. She was particularly interested in a story by Ye Yonglie that included a castle made from diamond. Ye learned that photocatalysis could split water into hydrogen and oxygen. She then became inspired by Jules Vernes The Mysterious Island', She studied chemistry at the ... | 5 | Photochemistry |
Typical aminophosphines undergo oxidation to the oxide. Alkylation, e.g. by methyl iodide, gives the phosphonium cation. | 0 | Organic Chemistry |
In biological systems, a double layer is the surface where two different phases of matter are in contact. Biological double layers are much like their interfacial counterparts, but with several notable distinctions.
The surface of biological cells carry many different types of chemical groups, each with a different dis... | 7 | Physical Chemistry |
Gene gating is a phenomenon by which transcriptionally active genes are brought next to nuclear pore complexes (NPCs) so that nascent transcripts can quickly form mature mRNA associated with export factors. Gene gating was first hypothesised by Günter Blobel in 1985. It has been shown to occur in Saccharomyces cerevisi... | 1 | Biochemistry |
Perilipin is part of a gene family with six currently-known members. In vertebrates, closely related genes include adipophilin (also known as adipose differentiation-related protein or Perilipin 2), TIP47 (Perilipin 3), Perilipin 4 and Perilipin 5 (also called MLDP, LSDP5, or OXPAT). Insects express related proteins, L... | 1 | Biochemistry |
A biomolecular complex, also called a biomacromolecular complex, is any biological complex made of more than one biopolymer (protein, RNA, DNA,
carbohydrate) or large non-polymeric biomolecules (lipid). The interactions between these biomolecules are non-covalent.
Examples:
* Protein complexes, some of which are multie... | 1 | Biochemistry |
In this regulatory scheme, every current polluting facility is given or may purchase on an open market an emissions allowance for each unit of a designated pollutant it emits. Operators can then install pollution control equipment, and sell portions of their emissions allowances they no longer need for their own operat... | 2 | Environmental Chemistry |
Anomerism is an identity for single bonded ring structures where "cis" or "Z" and "trans" or "E" (geometric isomerism) needs to name the substitutions on a carbon atom that also displays the identity of chirality; so anomers have carbon atoms that have geometric isomerism and optical isomerism (enantiomerism) on one or... | 4 | Stereochemistry |
Macro-scale biological processes, such as the spread of virus infections, can be followed using GFP labeling. In the past, mutagenic ultra violet light (UV) has been used to illuminate living organisms (e.g., see) to detect and photograph the GFP expression. Recently, a technique using non-mutagenic LED lights have ... | 1 | Biochemistry |
G-quadruplexes, also known as G4 DNA are secondary structures found in nucleic acids that are rich in guanine. These structures are normally located at the telomeres (the ends of the chromosomes). The G-quadruplex can either be parallel or antiparallel depending on the loop configuration, which is a component of the st... | 1 | Biochemistry |
In environmental chemistry, air sparging is an in situ remediation technique that removes volatile pollutants from contaminated groundwater and soil. | 8 | Metallurgy |
Stripping is mainly conducted in trayed towers (plate columns) and packed columns, and less often in spray towers, bubble columns, and centrifugal contactors.
Trayed towers consist of a vertical column with liquid flowing in the top and out the bottom. The vapor phase enters in the bottom of the column and exits out of... | 3 | Analytical Chemistry |
In organic chemistry, kinetic resolution is a means of differentiating two enantiomers in a racemic mixture. In kinetic resolution, two enantiomers react with different reaction rates in a chemical reaction with a chiral catalyst or reagent, resulting in an enantioenriched sample of the less reactive enantiomer. As op... | 4 | Stereochemistry |
Ecology
Calanus spp. are abundantly distributed copepods, particularly in the polar and temperate North Atlantic. Studies attempting to quantify the lipid pump have primarily focused on the cousin species of C. finmarchicus, Calanus glacialis and Calanus helgolandicus, C. hyperboreus. C. hyperboreous, the largest of th... | 9 | Geochemistry |
Blood plasma is the liquid component of blood, which contains dissolved proteins, nutrients, ions, and other soluble components. In whole blood, red blood cells, white blood cells, and platelets are suspended within the plasma. The goal of plasma purification and processing is to extract specific materials that are pre... | 3 | Analytical Chemistry |
* U.S. Commissioner of Corporations. Report on the Steel Industry (1913).
* Warne, Colston E. ed. The Steel Strike of 1919 (1963), primary and secondary documents | 8 | Metallurgy |
Prime editing is a search-and-replace genome editing technology in molecular biology by which the genome of living organisms may be modified. The technology directly writes new genetic information into a targeted DNA site. It uses a fusion protein, consisting of a catalytically impaired Cas9 endonuclease fused to an en... | 1 | Biochemistry |
Phred quality scores are logarithmically related to the base-calling error probabilities and defined as
This relation can also be written as
For example, if Phred assigns a quality score of 30 to a base, the chances that this base is called incorrectly are 1 in 1000.
The phred quality score is the negative ratio of... | 1 | Biochemistry |
The alpha effect is also dependent on solvent but not in a predictable way: it can increase or decrease with solvent mix composition or even go through a maximum. At least in some cases, the alpha effect has been observed to vanish if the reaction is conducted in the gas phase, leading some to conclude that it is prim... | 7 | Physical Chemistry |
A skeletal isomer of a compound is a structural isomer that differs from it in the atoms and bonds that are considered to comprise the "skeleton" of the molecule. For organic compounds, such as alkanes, that usually means the carbon atoms and the bonds between them.
For example, there are three skeletal isomers of pen... | 4 | Stereochemistry |
Pyrometers are suited especially to the measurement of moving objects or any surfaces that cannot be reached or cannot be touched. Contemporary multispectral pyrometers are suitable for measuring high temperatures inside combustion chambers of gas turbine engines with high accuracy.
Temperature is a fundamental paramet... | 8 | Metallurgy |
NpPS is a compound related to Lawessons reagent formed by the reaction of 1-bromonaphthalene with PS, this is a 1,3,2,4-dithiadiphosphetane 2,4-disulfide which has a naphth-1,8-diyl group holding the two phosphorus atoms together. The mechanism by which the NpPS forms is not yet elucidated, but it is thought to occur b... | 0 | Organic Chemistry |
Usually called RTD – Riverine Tailings Disposal. In most environments, not a particularly environmentally sound practice, it has seen significant utilisation in the past, leading to such spectacular environmental damage as done by the Mount Lyell Mining and Railway Company in Tasmania to the King River, or the poisonin... | 8 | Metallurgy |
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