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Oxaziridines have been found to undergo rearrangement reactions via a radical mechanism when irradiated with UV light or in the presence of a single electron transfer reagent such as Cu. spirocylic oxaziridines undergo ring expansions to the corresponding lactam. The migrating substituent is determined by a stereoelect... | 0 | Organic Chemistry |
A in plant cell is a complex amorphous polymer and it is from three aromatic alcohols, namely [https://pubchem.ncbi.nlm.nih.gov/compound/p-Coumaryl-alcohol P-Coumaryl], [https://pubchem.ncbi.nlm.nih.gov/compound/Coniferyl-alcohol Coniferyl], and [https://pubchem.ncbi.nlm.nih.gov/compound/Sinapyl-alcohol Sinapyl] alco... | 7 | Physical Chemistry |
Identity by descent (IBD) mapping generally uses single nucleotide polymorphism (SNP) arrays to survey known polymorphic sites throughout the genome of affected individuals and their parents and/or siblings, both affected and unaffected. While these SNPs probably do not cause the disease, they provide valuable insight... | 1 | Biochemistry |
The Directorate of Precious Metals & Gemstone Testing is one of fourteen directorates forming the Ministry of Industry, Commerce and Tourism. The directorate itself is composed of two sections that deal with assaying and gemmology and the three main functions of the directorate as a whole are:
1. Serving the trade and ... | 3 | Analytical Chemistry |
Van den Bergh reaction is a chemical reaction used to measure bilirubin levels in blood. More specifically, it determines the amount of conjugated bilirubin in the blood. The reaction produces azobilirubin.
Principle: bilirubin reacts with diazotised sulphanilic acid to produce purple coloured azobilirubin. This reacti... | 3 | Analytical Chemistry |
Molecular propellers can be rotated by molecular motors that can be driven by chemical, biological, optical and electrical means, or various ratchet-like mechanisms. Nature realizes most biological activities with a large number of highly sophisticated molecular motors, such as myosin, kinesin, and ATP synthase. For ex... | 6 | Supramolecular Chemistry |
Diebold's first appointment after graduation was as a post-doctoral research associate in the group of Theodore E. Madey in the department of physics at Rutgers University (1990-1993). It was there that she was first introduced to oxide surfaces, an area that she would later come to refer to as "the love of her scienti... | 7 | Physical Chemistry |
The materials used for generation of terahertz radiation by optical rectification can also be used for its detection by using the Pockels effect, where particular crystalline materials become birefringent in the presence of an electric field. The birefringence caused by the electric field of a terahertz pulse leads to ... | 7 | Physical Chemistry |
The CBS catalyst or Corey–Bakshi–Shibata catalyst is an asymmetric catalyst derived from proline. It finds many uses in organic reactions such as the CBS reduction, Diels-Alder reactions and (3+2) cycloadditions. Proline, a naturally occurring chiral compound, is readily and cheaply available. It transfers ... | 0 | Organic Chemistry |
The following references are for critical reviews of published stability constants for various classes of ligands. All these reviews are published by IUPAC and the full text is available, free of charge, in pdf format.
*ethylenediamine (en)
*Nitrilotriacetic acid (NTA)
*aminopolycarboxylic acids (complexones)
*Alpha h... | 7 | Physical Chemistry |
5-Bromouracil (5-BrU, 5BrUra, or br5Ura) is a brominated derivative of uracil that acts as an antimetabolite or base analog, substituting for thymine in DNA, and can induce DNA mutation in the same way as 2-aminopurine. It is used mainly as an experimental mutagen, but its deoxyriboside derivative (5-bromo-2-deoxy-urid... | 1 | Biochemistry |
These three metals generally form in a certain type of granite, via a similar mechanism to intrusive-related gold and copper. They are considered together because the process of forming these deposits is essentially the same. Skarn type mineralisation related to these granites is a very important type of tin, tungsten,... | 9 | Geochemistry |
More than 600 million SNPs have been identified across the human genome in the world's population. A typical genome differs from the reference human genome at 4 to 5 million sites, most of which (more than 99.9%) consist of SNPs and short indels. | 1 | Biochemistry |
Total carbon (TC) is an analytical parameter representing the concentration of carbon in a sample. TC includes carbon in any form, whether organic or inorganic, volatile or fixed, dissolved or suspended. In many application areas, rather than TC, a parameter representing of subset of TC is measured; examples include To... | 3 | Analytical Chemistry |
EMBO Reports is a peer-reviewed scientific journal covering research related to biology at a molecular level. It publishes primary research papers, reviews, and essays and opinion. It also features commentaries on the social impact of advances in the life sciences and the converse influence of society on science. A sis... | 1 | Biochemistry |
Crotonyl-coenzyme A is an intermediate in the fermentation of butyric acid, and in the metabolism of lysine and tryptophan. It is important in the metabolism of fatty acids and amino acids. | 1 | Biochemistry |
Common synthetic polymers that can be attacked include polypropylene and LDPE, where tertiary carbon bonds in their chain structures are the centres of attack. Ultraviolet rays interact with these bonds to form free radicals, which then react further with oxygen in the atmosphere, producing carbonyl groups in the main ... | 5 | Photochemistry |
Diphosphagermylenes are a class of compounds containing a divalent germanium atom bound to two phosphorus atoms. While these compounds resemble diamidocarbenes, such as N-heterocyclic carbenes (NHC), diphosphagermylenes display bonding characteristics distinct from those of diamidocarbenes. In contrast to NHC compounds... | 0 | Organic Chemistry |
One limitation of EPIC-seq is its reliance on prior knowledge of genes associated with specific cancers. The effectiveness of the EPIC-seq model hinges on the availability of comprehensive gene expression profiles for the targeted cancer types. This dependency may restrict its applicability to cancers with well-charact... | 1 | Biochemistry |
Thiol groups contain the functionality R−SH. Thiols are structurally similar to the alcohol group, but these functionalities are very different in their chemical properties. Thiols are more nucleophilic, more acidic, and more readily oxidized. This acidity can differ by 5 pK units.
The difference in electronegativity b... | 9 | Geochemistry |
This method of deoxidization involves adding specific metals into the steel. These metals will react with the unwanted oxygen, forming a strong oxide that, compared to pure oxygen, will reduce the steel's strength and qualities by a lesser amount.
The chemical equation for deoxidization is represented by:
where n and ... | 8 | Metallurgy |
Marcus' theory of outer sphere electron transfer predicts that such a tunneling process will occur most quickly in systems where the electron transfer is thermodynamically favorable (i.e. between strong reductants and oxidants) and where the electron transfer has a low intrinsic barrier.
The intrinsic barrier of electr... | 5 | Photochemistry |
In order to provide access to relevant data to users ChemSeer provides new features that are not available in traditional search engines or digital libraries.
# Chemical Entity Search: A tool capable of identifying Chemical formulae and chemical names, and extracting and disambiguating them from general terms within do... | 2 | Environmental Chemistry |
The total quantity of ATP in the human body is about 0.1 mol/L. The majority of ATP is recycled from ADP by the aforementioned processes. Thus, at any given time, the total amount of ATP + ADP remains fairly constant.
The energy used by human cells in an adult requires the hydrolysis of 100 to 150 mol/L of ATP daily, w... | 1 | Biochemistry |
Monocyclic cycloalkenes are cyclopropene, cyclobutene, cyclopentene, cyclohexene, cycloheptene, cyclooctene, and so on. Bicyclic alkenes include norbornene and norbornadiene.
Two more examples are shown below, methylenecyclohexane on the left and 1-methylcyclohexene on the right:
An exocyclic group is always shown outs... | 0 | Organic Chemistry |
Sand casting is one of the most popular and simplest types of casting, and has been used for centuries. Sand casting allows for smaller batches than permanent mold casting and at a very reasonable cost. Not only does this method allow manufacturers to create products at a low cost, but there are other benefits to sand ... | 8 | Metallurgy |
In 2023, researchers in the United States developed a method to determine BET surface areas using a thermogravimetric analyzer (TGA). This method uses a TGA to heat a porous sample loaded with an adsorbate, the produced plot of sample mass vs. temperature is then mapped into a standard isotherm to which BET theory is a... | 7 | Physical Chemistry |
Conservation of substance implies that the volume of wine in the barrel holding mostly water has to be equal to the volume of water in the barrel holding mostly wine.
The mixtures can be visualised as separated into their water and wine components:
To help in grasping this, the wine and water may be represented by, say... | 7 | Physical Chemistry |
Cryosurgery (with cryo from the Ancient Greek ) is the use of extreme cold in surgery to destroy abnormal or diseased tissue; thus, it is the surgical application of cryoablation.
Cryosurgery has been historically used to treat a number of diseases and disorders, especially a variety of benign and malignant skin condi... | 1 | Biochemistry |
After studying at the École nationale supérieure des industries chimiques de Nancy from 1958 to 1961, he obtained a doctorate under the supervision of Professor Serge David in 1966 and continued for two years at Harvard University in Massachusetts (United States) as a post-doctoral researcher with Professor Roger W. Je... | 0 | Organic Chemistry |
Shikimic acid is a precursor for:
* indole, indole derivatives and aromatic amino acid tryptophan and tryptophan derivatives such as the psychedelic compound dimethyltryptamine
* many alkaloids and other aromatic metabolites | 1 | Biochemistry |
Berthelot independently enunciated a generalization (commonly known as Berthelot's Third Principle, or Principle of Maximum Work), which may be briefly stated as: every pure chemical reaction is accompanied by evolution of heat. Whilst this principle is undoubtedly applicable to the great majority of chemical actions u... | 7 | Physical Chemistry |
Until around 1975, when HEp-2 cells were introduced, animal tissue was used as the standard substrate for immunofluorescence. HEp-2 cells are currently one of the most common substrates for ANA detection by immunofluorescence.
Originally started a laryngeal carcinoma strain, the cell line was contaminated and displaced... | 1 | Biochemistry |
Microfluidic diffusional sizing (MDS) is a method to measure the size of particles based on the degree to which they diffuse within a microfluidic laminar flow. It allows size measurements to be taken from extremely small quantities of material (nano-grams) and is particularly useful when sizing molecules which may var... | 1 | Biochemistry |
Many schemes attempting to quantify relative nucleophilic strength have been devised. The following empirical data have been obtained by measuring reaction rates for many reactions involving many nucleophiles and electrophiles. Nucleophiles displaying the so-called alpha effect are usually omitted in this type of treat... | 7 | Physical Chemistry |
Some drugs that contain a catechol group react with phosphomolybdic acid (HPMoO) to give the heteropoly-molybdenum blue colour. Micro quantities of the drugs can be determined. | 7 | Physical Chemistry |
A leaf (: leaves) is a principal appendage of the stem of a vascular plant, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, flower, and fruit collectively form the shoot system. In most leaves, the primary ph... | 5 | Photochemistry |
In chemistry, a foldamer is a discrete chain molecule (oligomer) that folds into a conformationally ordered state in solution. They are artificial molecules that mimic the ability of proteins, nucleic acids, and polysaccharides to fold into well-defined conformations, such as α-helices and β-sheets. The structure of a... | 6 | Supramolecular Chemistry |
Flux, or metabolic flux is the rate of turnover of molecules through a metabolic pathway. Flux is regulated by the enzymes involved in a pathway. Within cells, regulation of flux is vital for all metabolic pathways to regulate the pathway's activity under different conditions. Flux is therefore of great interest in met... | 1 | Biochemistry |
Martin Schoell is a German geochemist. His research focuses on using stable isotopes to characterize the geochemistry of petroleum. Schoell is known for his work regarding CO, sedimentary rocks, methane, natural gas, carbon isotopes, and acetate fermentation and how these factors enable identification of the origins of... | 9 | Geochemistry |
Reflection high-energy electron diffraction (RHEED) is a technique used to characterize the surface of crystalline materials. RHEED systems gather information only from the surface layer of the sample, which distinguishes RHEED from other materials characterization methods that also rely on diffraction of high-energy e... | 3 | Analytical Chemistry |
Many small replicons that have circular genomes such as circular ssDNA viruses and circular plasmids replicate via rolling circle replication (RCR), which is a unidirectional, strand displacement form of DNA replication similar to RHR. In RCR, successive rounds of replication, which proceeds in a loop around the genome... | 1 | Biochemistry |
Australian rangelands cover approximately 75% of the nations land mass. Characteristically arid and semi arid the rangelands offer wide variations in climate, land and soil. The pastoral industry and particularly pastoral practices equate to 60% of rangeland usage. Subsequently, Australias 25.5 million beef cattle gene... | 2 | Environmental Chemistry |
In order to levitate the particle in air, the downward force of gravity must be countered by the forces stemming from photon momentum transfer. Typically photon radiation pressure of a focused laser beam of enough intensity counters the downward force of gravity while also preventing lateral (side to side) and vertical... | 1 | Biochemistry |
The class Gammaproteobacteria forms one of the largest groups of bacteria. It is currently distinguished from other bacteria solely by 16s rRNA-based phylogenetic trees. No molecular characteristics unique to the class or its different subgroups are known. A detailed CSI-based study was conducted to better understand t... | 1 | Biochemistry |
Kikuchi lines, first observed by Seishi Kikuchi in 1928, are linear features created by electrons scattered both inelastically and elastically. As the electron beam interacts with matter, the electrons are diffracted via elastic scattering, and also scattered inelastically losing part of their energy. These occur simul... | 7 | Physical Chemistry |
*Orexins (-A and -B) are involved in a number of cognitive processes, including appetite, arousal, and reward, among many others.
*Neurohypophysial hormones:
**Arginine-vasopressin
**Oxytocin regulates social cognition (e.g., trust and pair-bonding) and modulates maternal behavior.
*Endogenous opioids:
**Dynorphins
**E... | 1 | Biochemistry |
The Bromley equation was developed in 1973 by Leroy A. Bromley with the objective of calculating activity coefficients for aqueous electrolyte solutions whose concentrations are above the range of validity of the Debye–Hückel equation. This equation, together with Specific ion interaction theory (SIT) and Pitzer equati... | 7 | Physical Chemistry |
Charge referencing is needed when a sample suffers a charge induced shift of experimental binding energies to obtain meaningful binding energies from both wide-scan, high sensitivity (low energy resolution) survey spectra (0-1100 eV), and also narrow-scan, chemical state (high energy resolution) spectra. Charge induced... | 7 | Physical Chemistry |
Biolistic transformation involves the integration of a functional fragment of DNA—known as a DNA construct—into target cells. A gene construct is a DNA cassette containing all required regulatory elements for proper expression within the target organism. While gene constructs may vary in their design depending on the d... | 1 | Biochemistry |
In 1992, Canadian authorities determined that eating fish contaminated with malachite green posed a significant health risk. Malachite green was classified a Class II Health Hazard. Due to its low manufacturing cost, malachite green is still used in certain countries with less restrictive laws for non aquaculture purpo... | 3 | Analytical Chemistry |
Most prominent example of the application of sensor-based ore sorting is the rejection of barren waste before transporting and comminution. Waste rejection is also known under the term pre-concentration. A discrimination has been introduced by Robben. Rule of thumb is that at least 25% of liberated barren waste must be... | 3 | Analytical Chemistry |
The journal is abstracted and indexed in:
According to the Journal Citation Reports, the journal has a 2021 impact factor of 3.623. | 9 | Geochemistry |
Experimental Exchangeability was devised by Yampolsky and Stoltzfus. It is the measure of the mean effect of exchanging one amino acid into a different amino acid.
It is based on analysis of experimental studies where 9671 amino acids replacements from different proteins, were compared for effect on protein activity. | 1 | Biochemistry |
The journal is abstracted and indexed in:
According to the Journal Citation Reports, the journal has a 2021 impact factor of 5.921. | 9 | Geochemistry |
Artificial nucleic acid analogues have been designed and synthesized. They include peptide nucleic acid, morpholino- and locked nucleic acid, glycol nucleic acid, and threose nucleic acid. Each of these is distinguished from naturally occurring DNA or RNA by changes to the backbone of the molecules. | 1 | Biochemistry |
A melanoblast is a precursor cell of a melanocyte. These cells migrate from the trunk neural crest cells (in terms of axial level from neck to posterior end) dorsolaterally between the ectoderm and dorsal surface of the somites. | 1 | Biochemistry |
M. Nosonovsky and B. Bhushan studied the effect of unitary (non-hierarchical) structures of micro and nano roughness, and hierarchical structures (micro roughness covered with nano roughness). They found that hierarchical structure was not only necessary for a high contact angle but essential for the stability of the w... | 6 | Supramolecular Chemistry |
Tairus (, a portmanteau of Тайско (Thai) and Русский (Russian)) is a synthetic gemstone manufacturer. It was formed in 1989 as part of Mikhail Gorbachev's perestroika initiative to establish a joint venture between the Russian Academy of Sciences and Tairus Created Gems Co Ltd. of Bangkok, Thailand. Today Tairus is a m... | 3 | Analytical Chemistry |
The term co-receptor is prominent in literature regarding signal transduction, the process by which external stimuli regulate internal cellular functioning. The key to optimal cellular functioning is maintained by possessing specific machinery that can carry out tasks efficiently and effectively. Specifically, the proc... | 1 | Biochemistry |
Hu Hongwen (; 16 March 1925 – 19 May 2016) was a Chinese organic chemist, educator and an academician of the Chinese Academy of Sciences (CAS). He was known as the Chief editor of Chinese higher education textbook Organic Chemistry.
Hu died on 19 May 2016 at the age of 91 in Nanjing. | 0 | Organic Chemistry |
A neuron's ability to generate and propagate an action potential changes during development. How much the membrane potential of a neuron changes as the result of a current impulse is a function of the membrane input resistance. As a cell grows, more channels are added to the membrane, causing a decrease in input resist... | 7 | Physical Chemistry |
Thermoplastic polymers like polyolefins can be remelted and reformed into new items. This approach is referred to as mechanical recycling and is usually the simplest and most economical form of recovery. Post-consumer plastic will usually already bare a degree of degradation. Another round of melt-processing will exac... | 7 | Physical Chemistry |
There is a hypoxic zone covers the coasts of Oregon and Washington that reached peak size in 2006 at an area of over 1,158 square miles. Strong surface winds between April and September cause frequent upwelling that results in an increase of algae blooms, rendering the hypoxia a seasonal occurrence. The upwelling has c... | 9 | Geochemistry |
Virodhamine (O-arachidonoyl ethanolamine; O-AEA) is an endocannabinoid and a nonclassic eicosanoid, derived from arachidonic acid. O-Arachidonoyl ethanolamine is arachidonic acid and ethanolamine joined by an ester linkage, the opposite of the amide linkage found in anandamide. Based on this opposite orientation, the m... | 1 | Biochemistry |
DCC (acronym for N,N-dicyclohexylcarbodiimide) was one of the first carbodiimides developed as a reagent. It is widely used for amide and ester formation, especially for solid-phase synthesis of peptides. DCC has achieved popularity mainly because of its high-yielding amide coupling reactions and the fact that it is qu... | 0 | Organic Chemistry |
Mycoremediation (from ancient Greek (), meaning "fungus", and the suffix , in Latin meaning restoring balance) is a form of bioremediation in which fungi-based remediation methods are used to decontaminate the environment. Fungi have been proven to be a cheap, effective and environmentally sound way for removing a wid... | 2 | Environmental Chemistry |
The Crabtree effect, named after the English biochemist Herbert Grace Crabtree, describes the phenomenon whereby the yeast, Saccharomyces cerevisiae, produces ethanol (alcohol) in aerobic conditions at high external glucose concentrations rather than producing biomass via the tricarboxylic acid (TCA) cycle, the usual p... | 1 | Biochemistry |
Ischemic cell death, or oncosis, is a form of accidental cell death. The process is characterized by an ATP depletion within the cell leading to impairment of ionic pumps, cell swelling, clearing of the cytosol, dilation of the endoplasmic reticulum and golgi apparatus, mitochondrial condensation, chromatin clumping, a... | 1 | Biochemistry |
CKLF-like MARVEL transmembrane domain-containing protein 2 (i.e. CMTM2), previously termed chemokine-like factor superfamily 2 ( i.e. CKLFSF2), is a member of the CKLF-like MARVEL transmembrane domain-containing family (CMTM) of proteins. In humans, it is encoded by the CMTM2 gene located in band 22 on the long (i.e. "... | 1 | Biochemistry |
Thiomers are capable of forming disulfide bonds with cysteine substructures of the mucus gel layer covering mucosal membranes. Because of this property they exhibit up to 100-fold higher mucoadhesive properties in comparison to the corresponding unthiolated polymers. Because of their mucoadhesive properties, thiolated ... | 7 | Physical Chemistry |
Viability PCR, also named v-PCR or vPCR, is an evolution of PCR. Through the use of a simple pre-treatment of the sample by the means of specific intercalating photo-reactive reagents it's possible to neutralize the DNA of dead cells. As a result, only DNA from live cells will be detected by PCR. This approach expands ... | 1 | Biochemistry |
A widespread experimental investigation of DSW material systems and evolution of related practical devices has been largely limited by the stringent anisotropy conditions necessary for successful DSW propagation, particularly the high degree of birefringence of at least one of the constituent materials and the limited ... | 7 | Physical Chemistry |
Ideal grain growth is a special case of normal grain growth where boundary motion is driven only by local curvature of the grain boundary. It results in the reduction of the total amount of grain boundary surface area i.e. total energy of the system. Additional contributions to the driving force by e.g. elastic strains... | 8 | Metallurgy |
Eslicarbazepine acetate is contraindicated in people with second- or third-degree atrioventricular block, a type of heart block, and in people who are hypersensitive to eslicarbazepine, oxcarbazepine or carbamazepine. | 4 | Stereochemistry |
The insulator element that is found in the gypsy retrotransposon of Drosophila is one of several sequences that have been studied in detail. The gypsy insulator can be found in the 5 untranslated region (UTR) of the retrotransposon element. Gypsy' affects the expression of adjacent genes pending insertion into a new ge... | 1 | Biochemistry |
Some chloroplasts contain a structure called the chloroplast peripheral reticulum. It is often found in the chloroplasts of plants, though it has also been found in some angiosperms, and even some gymnosperms. The chloroplast peripheral reticulum consists of a maze of membranous tubes and vesicles continuous with the... | 5 | Photochemistry |
The CIPW Norm was developed in the early 1900s and named after its creators, the petrologists Charles Cross, Joseph Iddings, Louis Pirsson, and the geochemist Henry Washington. The CIPW normative mineralogy calculation is based on the typical minerals that may be precipitated from an anhydrous melt at low pressure, and... | 9 | Geochemistry |
In the process of smelting, inorganic chlorides, fluorides (see fluorite), limestone and other materials are designated as "fluxes" when added to the contents of a smelting furnace or a cupola for the purpose of purging the metal of chemical impurities such as phosphorus, and of rendering slag more liquid at the smelti... | 8 | Metallurgy |
Lewis acids easily add to the nitrogen atom of pyridine, forming pyridinium salts. The reaction with alkyl halides leads to alkylation of the nitrogen atom. This creates a positive charge in the ring that increases the reactivity of pyridine to both oxidation and reduction. The Zincke reaction is used for the selective... | 0 | Organic Chemistry |
Recent advances in the identification of the tethers between the mitochondrial and ER membranes suggest that the scaffolding function of the molecular elements involved is secondary to other, non-structural functions. In yeast, ERMES, a multiprotein complex of interacting ER- and mitochondrial-resident membrane protein... | 1 | Biochemistry |
Sensitive electronic equipment are vulnerable to interference and unauthorized surveillance. These products also require protection from high voltages. Radio frequency (RF) shielding can address these issues by reducing the transmission of electric or magnetic fields from one space to another.
Copper is an excellent ma... | 8 | Metallurgy |
Like other siderophores, petrobactin is secreted by an animal pathogenic bacterium. B. anthracis uses petrobactin to acquire iron from its host. Interestingly, while the 3,4-catecholate ends of petrobactin do not improve iron(III) affinity relative to hydroxamate ends, they speed up iron removal from human diferric tra... | 1 | Biochemistry |
Mass spectrometry (MS) is an analytical technique that measures the mass-to-charge ratio (m/z) of charged particles (ions). Although there are many different kinds of mass spectrometers, all of them make use of electric or magnetic fields to manipulate the motion of ions produced from an analyte of interest and determi... | 3 | Analytical Chemistry |
* Anandamide
* 2-Arachidonoylglycerol
* 2-Arachidonyl glyceryl ether
* Oleamide
* Oleoylethanolamide
* Virodhamine
* Docosatetraenoylethanolamide
* Stearoylethanolamide
* N-Arachidonylglycine
* Arachidonoyl serotonin
* N-Arachidonoyl dopamine
* N-Acylethanolamine | 1 | Biochemistry |
This table gives the number of space group types in small dimensions, including the numbers of various classes of space group. The numbers of enantiomorphic pairs are given in parentheses. | 4 | Stereochemistry |
Trimethylsilyldiazomethane is the organosilicon compound with the formula (CH)SiCHN. It is classified as a diazo compound. Trimethylsilyldiazomethane is a commercially available reagent used in organic chemistry as a methylating agent and as a source of CH group. Its behavior is akin to the less convenient reagent d... | 0 | Organic Chemistry |
Native gels, also known as non-denaturing gels, analyze proteins that are still in their folded state. Thus, the electrophoretic mobility depends not only on the charge-to-mass ratio, but also on the physical shape and size of the protein. | 1 | Biochemistry |
Ferhan Çeçen was born on June 15, 1961, in Istanbul, Turkey. She graduated from the Deutsche Schule Istanbul in 1980 and speaks fluent English and German in addition to her native Turkish. Çeçen completed a B.S. in chemical engineering at Boğaziçi University in 1984.
In 1986, she completed a M.S. in environmental engin... | 2 | Environmental Chemistry |
Nicotinamide cofactor analogues (mNADs) are compounds that mimic the natural nicotinamide adenine dinucleotide cofactors in structure, to explore a mechanism or be used in biocatalysis or other applications.
These nicotinamide cofactor mimics generally retain the nicotinamide moiety with varying substituents. | 1 | Biochemistry |
Common sphere packings taken on by atomic systems are listed below with their corresponding packing fraction.
* Hexagonal close-packed (HCP): 0.74
* Face-centered cubic (FCC): 0.74 (also called cubic close-packed, CCP)
* Body-centered cubic (BCC): 0.68
* Simple cubic: 0.52
* Diamond cubic: 0.34
The majority of metals t... | 3 | Analytical Chemistry |
In general, if an excitatory synapse is strong enough, an action potential in the presynaptic neuron will trigger an action potential in the postsynaptic cell. In many cases the excitatory postsynaptic potential (EPSP) will not reach the threshold for eliciting an action potential. When action potentials from multiple ... | 1 | Biochemistry |
When the hydrogen atoms in an alkyl radical are displaced with deuterium, disproportionation proceeds at a slightly slower rate whereas the rate of recombination remains the same. Thus disproportionation is weakly affected by the kinetic isotope effect with k/k = 1.20 ± 0.15 for ethylene. Hydrogens and deuterons are no... | 0 | Organic Chemistry |
For this synthesis (Scheme 3) the morpholine enamine of ethyl isopropyl ketone was reacted with acryloyl chloride in a combined nucleophilic conjugate addition and nucleophilic acyl substitution to give after hydrolysis diketone 25. Reaction with hydrazine in triethylamine and ethanol afforded hydrazone 26. After an un... | 0 | Organic Chemistry |
The Goldsmiths' Professorship of Materials Science is a professorship in the University of Cambridge, associated with the Department of Materials Science and Metallurgy.
The professorship was established by grace of 20 November 1931 as the Goldsmiths Professorship of Metallurgy to replace the Goldsmiths Readership in M... | 8 | Metallurgy |
In organic chemistry, the term acetylenic designates
*A doubly unsaturated position (sp-hybridized) on a molecular framework, for instance in an alkyne such as acetylene;
*An ethynyl fragment, HCC–, or substituted homologue. | 0 | Organic Chemistry |
Herbert's wife Cathleen Synge Morawetz was a prolific mathematician at NYU. His sister Sonja Morawetz Sinclair revealed in 2017 she was a WW2 codebreaker after seven decades of secrecy by Bletchley Park Signals Intelligence. He helped organize the defection of Mikhail Barishnikov from the USSR 1974. His brother, Oskar... | 7 | Physical Chemistry |
Traditional active cancellation techniques for tremor reduction use electrical, hydraulic, or pneumatic systems to actuate an object in the direction opposite to the disturbance. However, these systems are limited due to the large infrastructure required to produce large amplitudes of power at human tremor frequencies.... | 8 | Metallurgy |
Phytomining was first proposed in 1983 by Rufus Chaney, a USDA agronomist. He and Alan Baker, a University of Melbourne professor, first tested it in 1996. They, as well as Jay Scott Angle and Yin-Ming Li, filed a patent on the process in 1995 which expired in 2015. | 2 | Environmental Chemistry |
Duplex sequencing is a new method and its efficiency was studied in limited applications such as detecting point mutations using targeted capture sequencing. More studies need to be performed to expand the application and feasibility of duplex sequencing to more complex samples with larger numbers of mutations, indels,... | 1 | Biochemistry |
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