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Early examples of different solutions to alleviate rotating stall in the front stages include the Rolls-Royce Avon with variable inlet guide vanes and interstage bleed, the General Electric J79 with variable inlet guide vanes and variable stators, the Bristol Olympus with split compressor and the Pratt & Whitney J57 wi... | 7 | Physical Chemistry |
Since TPD observes the mass of desorbed molecules, it shows what molecules are adsorbed on the surface. Moreover, TPD recognizes the different adsorption conditions of the same molecule from the differences between the desorption temperatures of molecules desorbing different sites at the surface, e.g. terraces vs. step... | 7 | Physical Chemistry |
12-Crown-4, also called 1,4,7,10-tetraoxacyclododecane and lithium ionophore V, is a crown ether with the formula CHO. It is a cyclic tetramer of ethylene oxide which is specific for the lithium cation. | 6 | Supramolecular Chemistry |
Its principal utility is that it provides simple predictions of phase equilibrium based on a single parameter that is readily obtained for most materials. These predictions are often useful for nonpolar and slightly polar (dipole moment < 2 debyes) systems without hydrogen bonding. It has found particular use in predic... | 7 | Physical Chemistry |
Although an attenuation mechanism that involves translation while transcription is ongoing, like to the mechanism for the trp operon (and some other amino acid biosynthetic operons), would not work in eukaryotes, there is evidence for attenuation in Eukaryotes. Research conducted on microRNA processing provides evidenc... | 1 | Biochemistry |
The known cases up to 2015 are discussed in a review article by Bučar, Lancaster, and Bernstein.
Dibenzoxazepines
Multidisciplinary studies involving experimental and computational approaches were applied to pharmaceutical molecules to facilitate the comparison of their solid-state structures. Specifically, this study ... | 3 | Analytical Chemistry |
The nuclear genetic code is flexible as illustrated by variant genetic codes that reassign standard stop codons to amino acids. | 1 | Biochemistry |
The ores used in ancient smelting processes were rarely pure metal compounds. Impurities were removed from the ore through the process of slagging, which involves adding heat and chemicals. Slag is the material in which the impurities from ores (known as gangue), as well as furnace lining and charcoal ash, collect. The... | 8 | Metallurgy |
In recent publications, prof. Sindo Kou has proposed an approach to evaluate susceptibility to solidification cracking; this approach is based on a similar approach where a quantity, , which has the dimensions of a temperature is proposed as an index of the cracking susceptibility. Again one could exploit Scheil based ... | 8 | Metallurgy |
In 1837, Draper accepted an appointment to be head of chemistry in a proposed medical school at New York University, but sufficient funds were not available to go ahead with the project. In 1839, Draper was elected undergraduate professor of chemistry and botany at the university, and moved with his family to New York ... | 5 | Photochemistry |
The human endoglin gene is located on human chromosome 9 with location of the cytogenic band at 9q34.11. Endoglin glycoprotein is encoded by 39,757 bp and translates into 658 amino acids.
The expression of the endoglin gene is usually low in resting endothelial cells. This, however, changes once neoangiogenesis begins ... | 1 | Biochemistry |
Yusif Haydar oglu Mammadaliyev (; December 31, 1905 – December 15, 1961) was an Azerbaijani and Soviet chemist. He was a Doctor of Chemistry, academician of the National Academy of Sciences of the Azerbaijan SSR, and was the president of the National Academy of Sciences of the Azerbaijan SSR.
According to the statemen... | 0 | Organic Chemistry |
As in Lewis structures, covalent bonds are indicated by line segments, with a doubled or tripled line segment indicating double or triple bonding, respectively. Likewise, skeletal formulae indicate formal charges associated with each atom (although lone pairs are usually optional, see below). In fact, skeletal formul... | 0 | Organic Chemistry |
Isocyanides have diverse reactivity.
Isocyanides are stable to strong base (they are often made under strongly basic conditions), but they are sensitive to acid. In the presence of aqueous acid, isocyanides hydrolyse to the corresponding formamides:
This reaction is used to destroy odorous isocyanide mixtures. Some iso... | 0 | Organic Chemistry |
In natural optical activity, the difference between the LCP light and the RCP light is caused by the asymmetry of the molecules (i.e. chiral molecules). Because of the handedness of the molecule, the absorption of the LCP light would be different from the RCP light. However, in MCD in the presence of a magnetic field, ... | 7 | Physical Chemistry |
In general, cis–trans stereoisomers contain double bonds or ring structures. In both cases the rotation of bonds is restricted or prevented. When the substituent groups are oriented in the same direction, the diastereomer is referred to as cis, whereas when the substituents are oriented in opposing directions, the dias... | 4 | Stereochemistry |
SBTi developed separate sector-specific methodologies, frameworks and requirements for different industries. As of December 2021, guidance is available for:
* Aviation
* Apparel and footwear
* Financial institutions
* Information and Communication Technology | 2 | Environmental Chemistry |
Solvation significantly affects the basicity of amines. N-H groups strongly interact with water, especially in ammonium ions. Consequently, the basicity of ammonia is enhanced by 10 by solvation. The intrinsic basicity of amines, i.e. the situation where solvation is unimportant, has been evaluated in the gas phase. ... | 0 | Organic Chemistry |
For a targeted treatment, the visibility and accessibility of the transition in the welded areas are required.
Existing structures typically are prepared at the transition for surface finishing. The parts must be free of loose rust and old paint. If necessary, previous sandblasting is required.
The device operates with... | 8 | Metallurgy |
Laboratories have developed grading methods to judge oocyte and embryo quality. In order to optimise pregnancy rates, there is significant evidence that a morphological scoring system is the best strategy for the selection of embryos. Since 2009 where the first time-lapse microscopy system for IVF was approved for clin... | 1 | Biochemistry |
Homogeneous broadening is a type of emission spectrum broadening in which all atoms radiating from a specific level under consideration radiate with equal opportunity. If an optical emitter (e.g. an atom) shows homogeneous broadening, its spectral linewidth is its natural linewidth, with a Lorentzian profile. | 7 | Physical Chemistry |
In superalloys strengthened by metal carbides, increasingly large carbide particles form preferentially at grain boundaries, preventing grain boundary sliding at high temperatures. This leads to an increase in the yield strength, and thus a yield strength anomaly. | 8 | Metallurgy |
The Boltzmann constant k (alternatively k) may be used in place of the molar gas constant by working in pure particle count, N, rather than amount of substance, n, since:
where N is the Avogadro constant.
For example, the ideal gas law in terms of the Boltzmann constant is:
where N is the number of particles (molecules... | 7 | Physical Chemistry |
Many model organism, such as plants (Arabidopsis thaliana), yeast (Saccharomyces cerevisiae ), flies (Drosophila melanogaster) and worms (C. elegans), have been used to study small non coding RNA-directed Transcriptional gene silencing. In human cell, RNA-directed transcriptional gene silencing was observed a decade a... | 1 | Biochemistry |
Pyruvate kinase type M2 or PKM2 is present in embryonic, adult stem cells. It is also expressed by many tumor cells. The alterations to metabolism by PKM2 increases ATP resources, stimulates macromolecular biosynthesis and redox control. Pyruvate kinase catalyses the ATP-generating step of glycolysis in which phosphoen... | 1 | Biochemistry |
Xylene is flammable but of modest acute toxicity, with ranges from 200 to 5000 mg/kg for animals. Oral for rats is 4300 mg/kg. The principal mechanism of detoxification is oxidation to methylbenzoic acid and hydroxylation to hydroxylene.
The main effect of inhaling xylene vapor is depression of the central nervous sy... | 2 | Environmental Chemistry |
The types and sizes of bioaerosols vary in marine environments and occur largely because of wet-discharges caused by changes in osmotic pressure or surface tension. Some types of marine originated bioaerosols excrete dry-discharges of fungal spores that are transported by the wind.
One instance of impact on marine spec... | 7 | Physical Chemistry |
Alclad sheeting has become a widely used material within the aviation industry for the construction of aircraft due to its favourable qualities, such as a high fatigue resistance and its strength. During the first half of the twentieth century, substantial studies were conducted into the corrosion qualities of various ... | 8 | Metallurgy |
* 2014 Outstanding Early Career Award recipient, American Heart Association, BCVS Council
* 2016 Honorary Citizen, Eastern Mani Municipality, Greece
* 2016 Visiting Professorship, UCLA Center for Systems Biomedicine
* 2017 Early Research Investigator Award, Lewis Katz School of Medicine at Temple University
* 2017... | 1 | Biochemistry |
The word "nitinol" is derived from its composition and its place of discovery: (Nickel Titanium-Naval Ordnance Laboratory). William J. Buehler along with Frederick E. Wang, discovered its properties during research at the Naval Ordnance Laboratory in 1959. Buehler was attempting to make a better missile nose cone, whic... | 8 | Metallurgy |
Benzeneselenol was first reported in 1888 by the reaction of benzene with selenium tetrachloride () in the presence of aluminium trichloride (). | 0 | Organic Chemistry |
When a solution of a substance in one solvent is brought into equilibrium with a second solvent that is immiscible with the first solvent, the dissolved substance may be partitioned between the two solvents. The ratio of concentrations in the two solvents is known as a partition coefficient or distribution coefficient.... | 7 | Physical Chemistry |
Sternhell was born in Lwow, then in Poland but now in western Ukraine. His father was Samson Sternhell, a lawyer. Before the war he attended a Zionist Hebrew language primary school for five years. Having survived the Bergen-Belsen concentration camp, he emigrated to Australia with his parents to join members of the St... | 0 | Organic Chemistry |
Numerous reports show a link between age-related diseases, birth defects, and several types of cancer with disruption of certain histone post translational modifications. Studies have identified that N- and C-terminal tails are main targets for acetylation, methylation, ubiquitination and phosphorylation. New eviden... | 1 | Biochemistry |
As in most PCR reactions, two primers—one for each end—are used per sequence. To splice two DNA molecules, special primers are used at the ends that are to be joined. For each molecule, the primer at the end to be joined is constructed such that it has a 5' overhang complementary to the end of the other molecule. Follo... | 1 | Biochemistry |
Individual transmembrane adenylyl cyclase isoforms have been linked to numerous physiological functions. Soluble adenylyl cyclase (sAC, AC10) has a critical role in sperm motility. Adenylyl cyclase has been implicated in memory formation, functioning as a coincidence detector. | 1 | Biochemistry |
Perilipin, also known as lipid droplet-associated protein, perilipin 1, or PLIN, is a protein that, in humans, is encoded by the PLIN gene. The perilipins are a family of proteins that associate with the surface of lipid droplets. Phosphorylation of perilipin is essential for the mobilization of fats in adipose tissue... | 1 | Biochemistry |
The resonance condition of any -type Raman process requires that the difference in the two photon energies match the difference in energy between the states at the "legs" of the , here the ground states identified above. In experimental settings, this condition is realized when the detunings of the cycling and repumpe... | 7 | Physical Chemistry |
According to the FDA, the stereoisomeric composition of a chiral drug should be known, and its effects should be well-characterized from pharmacologic, toxicologic, and clinical standpoints. In order to profile the different stereoisomers of enantiopure drugs, manufacturers are urged to develop quantitative assays for ... | 4 | Stereochemistry |
Domestic combustion pollution is mainly composed of burning fuel including wood, gas, and charcoal in activities of heating, cooking, agriculture, and wildfires. Major domestic pollutants contain 17% of carbon dioxide, 13% of carbon monoxide, 6% of nitrogen monoxide, polycyclic aromatic hydrocarbons, and fine and ultr... | 2 | Environmental Chemistry |
Topoisomers or topological isomers are molecules with the same chemical formula and stereochemical bond connectivities but different topologies. Examples of molecules for which there exist topoisomers include DNA, which can form knots, and catenanes. Each topoisomer of a given DNA molecule possesses a different linkin... | 6 | Supramolecular Chemistry |
Active mTORC1 is positioned on lysosomes. mTOR is inhibited when lysosomal membrane is damaged by various exogenous or endogenous agents, such as invading bacteria, membrane-permeant chemicals yielding osmotically active products (this type of injury can be modeled using membrane-permeant dipeptide precursors that poly... | 1 | Biochemistry |
These experiments address various important questions in evolutionary biology: does evolution proceed in small steps or in large leaps; is evolution reversible; how does complexity evolve? It has been shown that slight mutations in the amino acid sequence of hormone receptors determine an important change in their pref... | 1 | Biochemistry |
The cation [((CH)N)S] is a sulfonium ion. The S-N distances are 1.612 and 1.675 pm. The N-S-N angles are 99.6°. The anion is [FSi(CH)]. It is trigonal bipyramidal with mutually trans fluorides. The Si-F distances are 176 picometers. The Si-C distances are 188 pm. | 0 | Organic Chemistry |
In addition to the factors affecting monosaccharide residues, conformational analysis of oligosaccharides and polysaccharides requires consideration additional factors. | 0 | Organic Chemistry |
The catalytically active species is the anions cis-[Rh(CO)I] (top of scheme). The first organometallic step is the oxidative addition of methyl iodide to cis-[Rh(CO)I] to form the hexacoordinate species [(CH)Rh(CO)I]. This anion rapidly transforms, via the migration of a methyl group to an adjacent carbonyl ligand, aff... | 0 | Organic Chemistry |
Several cetacean species have very high mean blubber PCB concentrations likely to cause population declines and suppress population recovery. Striped dolphins, bottlenose dolphins and orcas were found to have mean levels that markedly exceeded all known marine mammal PCB toxicity thresholds. The western Mediterranean S... | 2 | Environmental Chemistry |
The combination medicine dextromethorphan/bupropion is approved for major depressive disorder under the brand name Auvelity. | 4 | Stereochemistry |
Hemithioacetals are formed by the reaction of a thiol () and an aldehyde ():
Hemithioacetals usually arise via acid catalysis. They typically are intermediates in the formation of dithioacetals (): | 0 | Organic Chemistry |
An expressed sequence tag (EST) is a short nucleotide sequence generated from a single RNA transcript. RNA is first copied as complementary DNA (cDNA) by a reverse transcriptase enzyme before the resultant cDNA is sequenced. Because ESTs can be collected without prior knowledge of the organism from which they come, th... | 1 | Biochemistry |
He was born in the family of an electrician and a land development specialist. Lukinavičius finished secondary school in Jurbarkas. | 1 | Biochemistry |
Fluorophores are essential to our measurement of the metal binding event, and indirectly, metal concentration. There are many types, all with different properties that make them advantageous for different applications. Some work as small metal sensors completely on their own while others must be complexed with a subuni... | 5 | Photochemistry |
Sulfur in natural materials can vary widely in isotopic composition: compilations of the δS values of natural sulfur-containing materials include values ranging from −55‰ to 135‰ VCDT. The ranges of δS values vary across sulfur-containing materials: for example, the sulfur in animal tissue ranges from ~ −10 to +20‰ VCD... | 9 | Geochemistry |
It is worthy to note that due to the multiple reactive sites of the multivinyl monomers, plenty of unreacted pendent vinyl groups are introduced to linear primary polymer chains. These pendent vinyl groups have the potential to react with propagating active centres either from their own polymer chain or others. Therefo... | 7 | Physical Chemistry |
Between 1978 and 1986, the Congress authorized the Department of Energy (DoE) and NASA to jointly investigate the concept. They organized the Satellite Power System Concept Development and Evaluation Program. The study remains the most extensive performed to date (budget $50 million). Several reports were published inv... | 7 | Physical Chemistry |
Though the cyclic forms of sugars are usually heavily favoured, hemiacetals in aqueous solution are in equilibrium with their open-chain forms. In aldohexoses this equilibrium is established as the hemiacetal bond between C-1 (the carbon bound to two oxygens) and C-5 oxygen is cleaved (forming the open-chain compound) ... | 4 | Stereochemistry |
2-Oxoadipic acid, also known as α-ketoadipic acid, is an intermediate in the metabolism of lysine and tryptophan. The conjugate base and carboxylate is 2-oxoadipate or α-ketoadipate, which is the biochemically relevant form. | 1 | Biochemistry |
In 2018, deulinoleate ethyl was given to a patient with amyotrophic lateral sclerosis (ALS) under a "compassionate use scheme". | 1 | Biochemistry |
Moexipril is available as a prodrug moexipril hydrochloride, and is metabolized in the liver to form the pharmacologically active compound moexiprilat. Formation of moexiprilat is caused by hydrolysis of an ethyl ester group. Moexipril is incompletely absorbed after oral administration, and its bioavailability is low. ... | 4 | Stereochemistry |
The AFM has been applied to problems in a wide range of disciplines of the natural sciences, including solid-state physics, semiconductor science and technology, molecular engineering, polymer chemistry and physics, surface chemistry, molecular biology, cell biology, and medicine.
Applications in the field of solid sta... | 6 | Supramolecular Chemistry |
The following table shows the characteristics of various HIV-1 bNAbs
In addition to targeting conserved epitopes, bNAbs are known to have long variable regions on their immunoglobulin (Ig) isotypes and subclasses. When compared to non-bNAbs, sequence variability from the germline immunoglobulin isotype is 7 fold. This ... | 1 | Biochemistry |
The French chemist Louis Pasteur founded zymology, when in 1856 he connected yeast to fermentation.
When studying the fermentation of sugar to alcohol by yeast, Pasteur concluded that the fermentation was catalyzed by a vital force, called "ferments", within the yeast cells. The "ferments" were thought to function onl... | 1 | Biochemistry |
Particle physics codified the basic laws of dynamics into the standard model. This is formulated as a quantum field theory that has CPT symmetry, i.e., the laws are invariant under simultaneous operation of time reversal, parity and charge conjugation. However, time reversal itself is seen not to be a symmetry (this is... | 7 | Physical Chemistry |
Hydrogen embrittles a variety of metals including steel, aluminium (at high temperatures only), and titanium. Austempered iron is also susceptible, though austempered steel (and possibly other austempered metals) displays increased resistance to hydrogen embrittlement. NASA has reviewed which metals are susceptible to ... | 7 | Physical Chemistry |
In chemistry, a compartment is a part of a protein that serves a specific function. They are essentially protein subunits with the added condition that a compartment has distinct functionality, rather than being just a structural component.
There may be multiple compartments on one and the same protein. One example is ... | 1 | Biochemistry |
Fast parallel proteolysis (FASTpp) is a method to determine the thermostability of proteins by measuring which fraction of protein resists rapid proteolytic digestion. | 1 | Biochemistry |
In case (e), we first form and then form by coupling and . This case is rare but has been observed. Rydberg states which converge to ionic states with spin–orbit coupling (such as Π) are best described as case (e).
The good quantum numbers in case (e) are , , and . Because is once again a good quantum number, the... | 7 | Physical Chemistry |
Measuring the size of a protein molecule is useful as an overall quality indicator, since misfolding, unfolding, oligomerization, aggregation or degradation can all affect size.
The literature specifically demonstrates the use of MDS in sizing protein-nanobody complexes, monitoring the formation of α-synuclein amyloid ... | 1 | Biochemistry |
Since many sources of human food are ultimately derived from terrestrial plants, the relative concentration of carbon-14 in human bodies is nearly identical to the relative concentration in the atmosphere. The rates of disintegration of potassium-40 and carbon-14 in the normal adult body are comparable (a few thousand ... | 9 | Geochemistry |
* 2023: Arthur C. Cope Scholar Award (American Chemical Society)
* 2018: University of California, Irvine Physical Science Outstanding Contributions to the Undergraduate Education
* 2017: Fellow of the AAAS
* 2013-2016: Humboldt Fellowship
* 2013: Japan Society for the Promotion of Science Fellowship
* 2008: NSF CAREER... | 0 | Organic Chemistry |
Staphylococcus aureus is a type of pathogen that causes infection to the skin and soft tissue and can lead to a variety of more severe diseases such as osteomyelitis, pneumonia, and endocarditis. Staphylococcus aureus uses biofilms in order to increase its chances of survival by becoming resistant to antibiotics. Biofi... | 1 | Biochemistry |
Elementary mode analysis closely matches the approach used by extreme pathways. Similar to extreme pathways, there is always a unique set of elementary modes available for a particular metabolic network. These are the smallest sub-networks that allow a metabolic reconstruction network to function in steady state. Accor... | 1 | Biochemistry |
Rett syndrome is a neurodevelopmental disorder involving deterioration of learned language and motor skills, autism, and seizures starting in infancy. Many cases of Rett syndrome are associated with mutations in MECP2, a gene encoding a transcriptional repressor. Mutations in this gene decrease the levels of MeCP2 bind... | 1 | Biochemistry |
https://web.archive.org/web/20160325004825/https://www.colorado.edu/physics/phys7550/phys7550_sp07/extras/Ramsey90_RMP.pdf | 7 | Physical Chemistry |
The journal is abstracted and indexed in:
*Aquatic Sciences & Fisheries Abstracts
*Chemical Abstracts Service
*Current Contents/Physical, Chemical & Earth Sciences
*Ei-Compendex
*Science Citation Index Expanded
*Scopus
According to the Journal Citation Reports, the journal has a 2022 impact factor of 0.7. | 7 | Physical Chemistry |
Glucose is an energy source in most life forms. For instance, polysaccharides are broken down into their monomers by enzymes (glycogen phosphorylase removes glucose residues from glycogen, a polysaccharide). Disaccharides like lactose or sucrose are cleaved into their two component monosaccharides. | 1 | Biochemistry |
We thus have two new kinds of isometry subgroups: all translations, and rotations sharing a fixed point. Both are subgroups of the even subgroup, within which translations are normal. Because translations are a normal subgroup, we can factor them out leaving the subgroup of isometries with a fixed point, the orthogonal... | 3 | Analytical Chemistry |
In some very economically important flowers like roses, carnations and chrysanthemums despite a lot of efforts was not possible to breed the flowers with blue petals coloration. The lack of F35H enzyme and hence delphinidin type anthocyanin is the reason why blue flower colour was not possible to obtain. | 1 | Biochemistry |
Ionic transfer is the transfer of ions from one liquid phase to another. This is related to the phase transfer catalysts which are a special type of liquid-liquid extraction which is used in synthetic chemistry.
For instance nitrate anions can be transferred between water and nitrobenzene. One way to observe this is to... | 7 | Physical Chemistry |
The Abel test is a method developed by the British chemist Frederick Abel (1827–1902) to determine the flash point of a given sample of petroleum in order to ascertain the temperature at which it could safely be stored or used.
The test was mandated by the British Petroleum Act 1879, which fixed the minimum flash point... | 3 | Analytical Chemistry |
Xylenes are an important petrochemical produced by catalytic reforming and also by coal carbonisation in the manufacture of coke fuel. They also occur in crude oil in concentrations of about 0.5–1%, depending on the source. Small quantities occur in gasoline and aircraft fuels.
Xylenes are produced mainly as part of th... | 2 | Environmental Chemistry |
Organic selenocyanates are organoselenium compounds with the general formula RSeCN. They are generally colorless, air-stable solids or liquids with repulsive odors. In terms of structure, synthesis, and reactivity, selenocyanates and thiocyanates behave similarly. | 0 | Organic Chemistry |
The Fürst-Plattner rule (also known as the trans-diaxial effect) describes the stereoselective addition of nucleophiles to cyclohexene derivatives. | 4 | Stereochemistry |
*GB772534A Improvements in or relating to titanium base alloys
*CH457874A Verfahren zur Wärmebehandlung einer Titanlegierung
*GB929931A Titanium-base alloys and their heat treatment
*US3007824A Method of heat treating a ti-be alloy
*US3118828A Electrode structure with titanium alloy base
*FI35168A Sätt att framställa e... | 8 | Metallurgy |
The response to stimulation of chemoreceptors on the heart rate is complicated. Chemoreceptors in the heart or nearby large arteries, as well as chemoreceptors in the lungs, can affect heart rate. Activation of these peripheral chemoreceptors from sensing decreased O, increased CO and a decreased pH is relayed to cardi... | 3 | Analytical Chemistry |
The Embeden–Meyerhof pathway and the Krebs cycle are the centre of metabolism in nearly all bacteria and eukaryotes. They provide not only energy but also precursors for biosynthesis of macromolecules that make up living systems. | 1 | Biochemistry |
A special type of hypervalent molecules is hypervalent hydrides. Most known hypervalent molecules contain substituents more electronegative than their central atoms. Hypervalent hydrides are of special interest because hydrogen is usually less electronegative than the central atom. A number of computational studies hav... | 4 | Stereochemistry |
The reserve pool is not directly connected to the active zone. The increase in presynaptic calcium concentration activates calcium–calmodulin-dependent protein kinase (CaMK). CaMK phosphorylates a protein, synapsin, that mediates the clustering of the reserve pool vesicles and attachment to the cytoskeleton. Phospho... | 1 | Biochemistry |
James Murray (1923–1961) was an organic chemist at the University of Otago. He was the first twentieth-century lichenologist in New Zealand. | 0 | Organic Chemistry |
It is still unclear the ecological effects of lactonase but it has been proposed that since bacteria mostly coexist with other microorganisms in the environment, some bacteria strains could have evolved its feeding strategies and utilize AHLs as their main resource for energy and nitrogen. | 1 | Biochemistry |
Calmagite is a complexometric indicator used in analytical chemistry to identify the presence of metal ions in solution. As with other metal ion indicators calmagite will change color when it is bound to an ion. Calmagite will be wine red when it is bound to a metal ion and may be blue, red, or orange when it is not bo... | 3 | Analytical Chemistry |
Bismuth polycations are polyatomic ions of the formula . They were originally observed in solutions of bismuth metal in molten bismuth chloride. It has since been found that these clusters are present in the solid state, particularly in salts where germanium tetrachloride or tetrachloroaluminate serve as the counterani... | 7 | Physical Chemistry |
The x-axis of a Tanabe–Sugano diagram is expressed in terms of the ligand field splitting parameter, Δ, or Dq (for "differential of quanta"), divided by the Racah parameter B. The y-axis is in terms of energy, E, also scaled by B. Three Racah parameters exist, A, B, and C, which describe various aspects of interelectr... | 7 | Physical Chemistry |
Sulfur from meteorites was determined in the early 1950s to be an adequate reference standard because it exhibited a small variability in isotopic ratios. It was also believed that because of their extraterrestrial provenances, meteors represented primordial terrestrial isotopic conditions. During a meeting of the Nat... | 9 | Geochemistry |
Plants growing at high light invest less of their biomass in leaves and stems, and more in roots. They grow faster, per unit leaf area (ULR) and per unit total plant mass (RGR), and therefore high-light grown plants generally have more biomass. They have shorter internodes, with more stem biomass per unit stem length, ... | 5 | Photochemistry |
A first ChIP-on-chip experiment was performed in 1999 to analyze the distribution of cohesin along budding yeast chromosome III. Although the genome was not completely represented, the protocol in this study remains equivalent as those used in later studies. The ChIP-on-chip technique using all of the ORFs of the genom... | 1 | Biochemistry |
Vitamin A toxicity (hypervitaminosis A) occurs when too much vitamin A accumulates in the body. It comes from consumption of preformed vitamin A but not of carotenoids, as conversion of the latter to retinol is suppressed by the presence of adequate retinol. | 1 | Biochemistry |
Tengiz Beridze (Georgian: თენგიზ გიორგის ძე ბერიძე) is a Georgian biochemist. He was born on 26 October 1939 in Tbilisi, Georgian SSR, USSR. | 1 | Biochemistry |
After securing the fellowship of the Pakistan Academy of Sciences, Rahman had been affiliated with the Pakistan government regarding education and science affairs. From 1996 until 2012, Rahman served in the board of directors of the Committee on Scientific and Technological Cooperation, representing Pakistans delegatio... | 0 | Organic Chemistry |
Non-destructive detectors in liquid chromatography:
*Ultraviolet light detectors, fixed or variable wavelength, which includes diode array detectors. The ultraviolet light absorption of the effluent is continuously measured at single or multiple wavelengths. These are by far most popular detectors for liquid chromatogr... | 3 | Analytical Chemistry |
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