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There are many factors at play in even a basic melt spinning process. The quality and dimensions of the product are determined by how the machine is operated and configured. Consequently, there are many studies exploring the effects of variations in the melt spinner's configuration on specific alloys. For example, [htt... | 8 | Metallurgy |
The executive council of the Committee for Skeptical Inquiry (CSI) voted in April 2011 to include Walter McCrone in its "Pantheon of Skeptics". The Pantheon of Skeptics commemorates deceased distinguished fellows of CSI and their exceptional contributions to the cause of scientific skepticism. | 3 | Analytical Chemistry |
Since the method requires no binder, balsam or glue, the physical properties of the bound object are the same as the objects joined. Typically, glues and binders are more heat sensitive or have undesirable properties compared to the actual bodies being joined. The use of optical contact bonding allows the production of... | 6 | Supramolecular Chemistry |
The term "ionic liquid" in the general sense was used as early as 1943.
The discovery date of the "first" ionic liquid is disputed, along with the identity of its discoverer. Ethanolammonium nitrate (m.p. 52–55 °C) was reported in 1888 by S. Gabriel and J. Weiner. In 1911 Ray and Rakshit, during preparation of the nitr... | 7 | Physical Chemistry |
A meter is a thermodynamic system which displays some aspect of its thermodynamic state to the observer. The nature of its contact with the system it is measuring can be controlled, and it is sufficiently small that it does not appreciably affect the state of the system being measured. The theoretical thermometer descr... | 7 | Physical Chemistry |
The IUPAC recommended name for phosphorous acid is phosphonic acid. Correspondingly, the IUPAC-recommended name for the ion is phosphonate. In the US the IUPAC naming conventions for inorganic compounds are taught at high school, but not as a required part of the curriculum. A well-known university-level textbook fol... | 0 | Organic Chemistry |
The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmospheric, terrestrial, and marine ecosystems. The conversion of nitrogen can be carried out through both biological and physical processes. Important processes in the nitrogen cycle inclu... | 1 | Biochemistry |
Many possible applications have been suggested over years for LM and LB films. Their characteristics are extremely thin films and high degree of structural order. These films have different optical, electrical and biological properties which are composed of some specific organic compounds. Organic compounds usually hav... | 7 | Physical Chemistry |
FSL Kode constructs have been used for research and development, diagnostic products, and are currently being investigated as potential therapeutic agents. | 1 | Biochemistry |
For the special case of simple cubic crystals, the lattice vectors are orthogonal and of equal length (usually denoted a), as are those of the reciprocal lattice. Thus, in this common case, the Miller indices (hkℓ) and [hkℓ] both simply denote normals/directions in Cartesian coordinates.
For cubic crystals with lattice... | 3 | Analytical Chemistry |
In his last years, Walden focused on history of chemistry and collected a unique library of over 10,000 volumes. The library and his house were destroyed when the British bombed Rostock in 1942. Walden moved to Berlin and then to Frankfurt am Main, where he became a visiting professor of the history of chemistry at the... | 4 | Stereochemistry |
The non-random two-liquid model (abbreviated NRTL model) is an activity coefficient model introduced by Renon
and Prausnitz in 1968 that correlates the activity coefficients of a compound with its mole fractions in the liquid phase concerned. It is frequently applied in the field of chemical engineering to calculate ... | 7 | Physical Chemistry |
A blank value in analytical chemistry is a measurement of a blank. The reading does not originate from a sample, but the matrix effects, reagents and other residues. These contribute to the sample value in the analytical measurement and therefore have to be subtracted.
The limit of blank is defined by the Clinical And ... | 3 | Analytical Chemistry |
Noise-immune cavity-enhanced optical-heterodyne molecular spectroscopy (NICE-OHMS) is an ultra-sensitive laser-based absorption technique that utilizes laser light to assess the concentration or the amount of a species in gas phase by absorption spectrometry (AS). | 7 | Physical Chemistry |
The product of layer thickness (d) and elevation height (h) is constant (d·h = constant), the two quantities are inversely proportional. The surface of the liquid between the planes is hyperbola. | 7 | Physical Chemistry |
Pre-computed results for biological assemblies
For a lot of proteins deposited in Protein Data Bank, the asymmetric unit might be different from biological unit, which would make the computational result biologically irrelevant. So the new CASTp 3.0 computed the topological features for biological assemblies, overcome ... | 1 | Biochemistry |
The process of organohalide respiration, uses reductive dehalogenation to produce energy that can be used by the respiring microorganism to carry out its growth and metabolism. Halogenated organic compounds are used as the terminal electron acceptor, which results in their dehalogenation. Reductive dehalogenation is th... | 7 | Physical Chemistry |
The delocalization of electrons across the structure of a radical, also known as its ability to form one or more resonance structures, allows for the electron-deficiency to be spread over several atoms, minimizing instability. Delocalization usually occurs in the presence of electron-donating groups, such as hydroxyl g... | 2 | Environmental Chemistry |
Description of the Mono Lake tufa dates back to the 1880s, when Edward S. Dana and Israel C. Russell made the first systematic descriptions of the Mono Lake tufa. The tufa occurs as "modern" tufa towers. There are tufa sections from old shorelines, when the lake levels were higher. These pioneering works in tufa morpho... | 2 | Environmental Chemistry |
Higher L1 copy numbers have been observed in the human brain compared to other organs. Studies of animal models and human cell lines have shown that L1s become active in neural progenitor cells (NPCs), and that experimental deregulation of or overexpression of L1 increases somatic mosaicism. This phenomenon is negative... | 1 | Biochemistry |
In semiconductor physics the Photo-Dember effect (named after its discoverer H. Dember) consists in the formation of a charge dipole in the vicinity of a semiconductor surface after ultra-fast photo-generation of charge carriers. The dipole forms owing to the difference of mobilities (or diffusion constants) for holes ... | 7 | Physical Chemistry |
Several chemical factors affect the ionophore activity. The activity of an ionophore-metal complex depends on its geometric configuration and the coordinating sites and atoms which create coordination environment surrounding the metal center. This affects the selectivity and affinity towards a certain ion. Ionophores c... | 7 | Physical Chemistry |
In AFM, feedback loops control the operation of the microscope by keeping a fixed value a parameter of the tip's oscillation. If the main feedback loop operates with the amplitude, the AFM mode is called amplitude modulation (AM). If it operates with the frequency shift, the AFM mode is called frequency modulation (FM)... | 6 | Supramolecular Chemistry |
MMC Estates and Countryside Properties subsequently released statements in September 2005 acknowledging that there was significant contamination on the site. Michael Drogan, director of MMC, said: "Following the completion of investigations, which have now been published, we recognise there is significant asbestos cont... | 2 | Environmental Chemistry |
(E,E)-2,4-Decadienal is an aromatic substance found in butter, cooked beef, fish, potato chips, roasted peanut, buckwheat and wheat bread crumb.
In an isolated state, it smells of deep fat flavor, characteristic of chicken aroma (at 10ppm). At lower concentration, it has the odor of citrus, orange or grapefruit.
It m... | 1 | Biochemistry |
In chemistry and biology a cross-link is a bond or a short sequence of bonds that links one polymer chain to another. These links may take the form of covalent bonds or ionic bonds and the polymers can be either synthetic polymers or natural polymers (such as proteins).
In polymer chemistry "cross-linking" usually refe... | 7 | Physical Chemistry |
The pseudo-Voigt profile (or pseudo-Voigt function) is an approximation of the Voigt profile V(x) using a linear combination of a Gaussian curve G(x) and a Lorentzian curve L(x) instead of their convolution.
The pseudo-Voigt function is often used for calculations of experimental spectral line shapes.
The mathematical ... | 7 | Physical Chemistry |
One can characterise a surface that has undergone certain finishing operations by three main properties of: roughness, waviness, and fractal dimension. Among these, roughness and fractality are of most importance, with roughness often indicated in terms of a rms value, and surface fractality denoted generally by D. T... | 7 | Physical Chemistry |
The oxygen blast furnace (OBF) process has been extensively studied theoretically because of the potentials of promising energy conservation and emission reduction. This type may be the most suitable for use with CCS. The main blast furnace has of three levels; the reduction zone (), slag formation zone (), and the c... | 8 | Metallurgy |
The tin belt of Southeast Asia extends all the way down to Tasmania, but metals were not exploited in Australia until the arrival of Europeans in the 1780s. | 8 | Metallurgy |
A more complex use of reporter genes on a large scale is in two-hybrid screening, which aims to identify proteins that natively interact with one another in vivo. | 1 | Biochemistry |
Nucleotidomimetics do not generally qualify as foldamers. Most are designed to mimic single DNA bases, nucleosides, or nucleotides in order to nonspecifically target DNA. These have several different medicinal uses including anti-cancer, anti-viral, and anti-fungal applications. | 6 | Supramolecular Chemistry |
In organic chemistry, acyloins or α-hydroxy ketones are a class of organic compounds of the general form , composed of a hydroxy group () adjacent to a ketone group (). The name acyloin is derived from the fact that they are formally derived from reductive coupling of carboxylic acyl groups (). They are one of the two ... | 0 | Organic Chemistry |
The GPCR superfamily is the largest gene family in the human genome containing approximately 800 genes. As the vertebrate superfamily can be phylogenetically grouped into five main families, the GRAFS classification system has been proposed, which includes the glutamate, rhodopsin, adhesion, Frizzled/Taste2, and secret... | 1 | Biochemistry |
The Procellarum KREEP Terrane, or PKT, is a large province on the near side of the Moon that has high abundances of KREEP. KREEP is an acronym built from the letters K (the atomic symbol for potassium), REE (rare-earth elements) and P (for phosphorus), and is a geochemical component of some lunar impact breccia and ba... | 9 | Geochemistry |
P700, or photosystem I primary donor, is the reaction-center chlorophyll a molecular dimer associated with photosystem I in plants, algae, and cyanobacteria. | 5 | Photochemistry |
Convection can be "forced" by movement of a fluid by means other than buoyancy forces (for example, a water pump in an automobile engine). Thermal expansion of fluids may also force convection. In other cases, natural buoyancy forces alone are entirely responsible for fluid motion when the fluid is heated, and this pro... | 7 | Physical Chemistry |
Robert Emerson described the eponymous effect in 1957. In his paper he observed that:
# When plants are exposed to light having wavelength greater than 680 nm, then only one photosystem is activated; i.e. PS700 resulting in formation of ATP only.
# When plants are exposed to light having wavelength less than 680 nm, th... | 5 | Photochemistry |
Queuine (Q) is a modified nucleotide at position 34 in tRNA (queuosine is the name of the nucleoside, while queuine is the name of the nucleotide). Nucleotide modifications in tRNA are not uncommon, as tRNA is one of the most heavily modified types of RNA, and nearly 80 types of modified nucleotides have been identifie... | 1 | Biochemistry |
The Tn7 transposon is a mobile genetic element found in many prokaryotes such as Escherichia coli (E. coli), and was first discovered as a DNA sequence in bacterial chromosomes and naturally occurring plasmids that encoded resistance to the antibiotics trimethoprim and streptomycin. Specifically classified as a transpo... | 1 | Biochemistry |
At equilibrium the rate of the forward reaction is equal to the backward reaction rate. A simple reaction, such as ester hydrolysis
has reaction rates given by expressions
According to Guldberg and Waage, equilibrium is attained when the forward and backward reaction rates are equal to each other. In these circumstance... | 7 | Physical Chemistry |
Michael Polanyi, FRS (11 March 1891 – 22 February 1976) was a Hungarian polymath, who made theoretical contribution to physical chemistry, economics, and philosophy. Polanyi was a well known theoretical chemist who contributed to the chemistry field through three main areas of study: adsorption of gases on solids, x-ra... | 7 | Physical Chemistry |
In bipolar disorder, one commonly identified endophenotype is a deficit in face emotion labeling, which is found in both individuals with bipolar disorder and in individuals who are "at risk" (i.e., have a first degree relative with bipolar disorder). Using fMRI, this endophenotype has been linked to dysfunction in th... | 2 | Environmental Chemistry |
While the exact epistasis of Imd pathway signalling components is continually scrutinized, the mechanistic order of many key components of the pathway is well-established. The following sections discuss Imd signalling as it is found in Drosophila melanogaster, where it is exceptionally well-characterized. Imd signallin... | 1 | Biochemistry |
The Gaia hypothesis continues to be broadly skeptically received by the scientific community. For instance, arguments both for and against it were laid out in the journal Climatic Change in 2002 and 2003. A significant argument raised against it are the many examples where life has had a detrimental or destabilising ef... | 9 | Geochemistry |
Chlorprothixene was the first of the thioxanthene antipsychotics to be synthesized. It was introduced in 1959 by Lundbeck.
Lometraline, tametraline, and sertraline were reportedly derived via structural modification of chlorprothixene. | 4 | Stereochemistry |
The journal is abstracted and indexed in:
*Chemical Abstracts
*Current Contents/Engineering, Computing & Technology
*Inspec
*Materials Science Citation Index
*Scopus
According to the Journal Citation Reports, the journal has a 2020 impact factor of 7.205. | 8 | Metallurgy |
Markovnikov married Lyubov Dmitrievna Rychkova. They had two sons, Vladimir, a politician and Nikolai, an architect. | 0 | Organic Chemistry |
Brown was born Herbert Brovarnik in London, to Ukrainian Jewish immigrants from Zhitomir, Pearl (née Gorinstein) and Charles Brovarnik, a hardware store manager and carpenter. His family moved to Chicago in June 1914, when he was two years old. Brown attended Crane Junior College in Chicago, where he met Sarah Baylen,... | 4 | Stereochemistry |
The dangerous goods definition of an oxidizing agent is a substance that can cause or contribute to the combustion of other material. By this definition some materials that are classified as oxidizing agents by analytical chemists are not classified as oxidizing agents in a dangerous materials sense. An example is pota... | 7 | Physical Chemistry |
If the gas is ideal, both the initial (, , ) and final (, , ) conditions follow the Ideal Gas Law, so that initially
and then, after the tap is opened,
Here is the number of moles of gas and is the molar ideal gas constant. Because the internal energy does not change and the internal energy of an ideal gas is solely ... | 7 | Physical Chemistry |
In chemistry, an open-chain compound (or open chain compound) or acyclic compound (Greek prefix α without and κύκλος cycle) is a compound with a linear structure, rather than a cyclic one.
An open-chain compound having no side groups is called a straight-chain compound (also spelled as straight chain compound). Many of... | 4 | Stereochemistry |
Function-Spacer-Lipid (FSL) Kode constructs (Kode Technology) are amphiphatic, water dispersible biosurface engineering constructs that can be used to engineer the surface of cells, viruses and organisms, or to modify solutions and non-biological surfaces with bioactives. FSL Kode constructs spontaneously and stably in... | 1 | Biochemistry |
In thermodynamics, enthalpy–entropy compensation is a specific example of the compensation effect. The compensation effect refers to the behavior of a series of closely related chemical reactions (e.g., reactants in different solvents or reactants differing only in a single substituent), which exhibit a linear relation... | 7 | Physical Chemistry |
Bronze disease is an irreversible and nearly inexorable corrosion process that occurs when chlorides come into contact with bronze or other copper-bearing alloys. It can occur as both a dark green coating, or as a much lighter whitish fuzzy or furry green coating. It is not a bacterial infection, but the result of a c... | 8 | Metallurgy |
In electrophilic aromatic substitution reactions, existing substituent groups on the aromatic ring influence the overall reaction rate or have a directing effect on positional isomer of the products that are formed.
An electron donating group (EDG) or electron releasing group (ERG, Z in structural formulas) is an atom... | 0 | Organic Chemistry |
*Gilmore G, Hemingway J. Practical Gamma-Ray Spectrometry. John Wiley & Sons, Chichester: 1995, .
*Knoll G, Radiation Detection and Measurement. John Wiley & Sons, Inc. NY:2000, .
*Nucleonica Wiki. [https://web.archive.org/web/20120226211611/http://www.nucleonica.net/wiki/index.php/Help:Gamma_Spectrum_Generator Gamma S... | 7 | Physical Chemistry |
The elasticity coefficient measures the local response of an enzyme or other chemical reaction to changes in its environment. Such changes include factors such as substrates, products, or effector concentrations. For further information, please refer to the dedicated page at elasticity coefficients. | 1 | Biochemistry |
In organic chemistry, the Cahn–Ingold–Prelog (CIP) sequence rules (also the CIP priority convention; named after Robert Sidney Cahn, Christopher Kelk Ingold, and Vladimir Prelog) are a standard process to completely and unequivocally name a stereoisomer of a molecule. The purpose of the CIP system is to assign an R or ... | 4 | Stereochemistry |
A hydrogen bond (H-bond), is a specific type of interaction that involves dipole–dipole attraction between a partially positive hydrogen atom and a highly electronegative, partially negative oxygen, nitrogen, sulfur, or fluorine atom (not covalently bound to said hydrogen atom). It is not a covalent bond, but instead i... | 6 | Supramolecular Chemistry |
Optical particle measurements are emerging as an important technique for understanding the ocean carbon cycle, including contributions to estimates of their downward flux, which sequesters carbon dioxide in the deep sea. Optical instruments can be used from ships or installed on autonomous platforms, delivering much gr... | 9 | Geochemistry |
The limiting current in electrochemistry is the limiting value of a faradaic current that is approached as the rate of charge transfer to an electrode is increased. The limiting current can be approached, for example, by increasing the electric potential or decreasing the rate of mass transfer to the electrode. It is i... | 7 | Physical Chemistry |
The mechanisms of embrittlement are similar to those of metals. Inorganic glass embrittlement can be manifested via static fatigue. Embrittlement in glasses, such as Pyrex, is a function of humidity. Growth rate of cracks vary linearly with humidity, suggesting a first-order kinetic relationship. The static fatigue of ... | 8 | Metallurgy |
Depending on ring size, the three-dimensional shapes of particular cyclic structures—typically rings of 5-atoms and larger—can vary and interconvert such that conformational isomerism is displayed. Indeed, the development of this important chemical concept arose, historically, in reference to cyclic compounds. For inst... | 4 | Stereochemistry |
Polymer-bonded explosives, also called PBX or plastic-bonded explosives, are explosive materials in which explosive powder is bound together in a matrix using small quantities (typically 5–10% by weight) of a synthetic polymer. PBXs are normally used for explosive materials that are not easily melted into a casting, or... | 7 | Physical Chemistry |
The Tishchenko reaction is an organic chemical reaction that involves disproportionation of an aldehyde in the presence of an alkoxide. The reaction is named after Russian organic chemist Vyacheslav Tishchenko, who discovered that aluminium alkoxides are effective catalysts for the reaction.
In the related Cannizzaro ... | 0 | Organic Chemistry |
One characteristic of adhesion GPCRs is their extended extracellular region. This region is modular in nature, often possessing a variety of structurally defined protein domains and a membrane proximal GAIN domain. In the aptly named Very Large G protein-coupled Receptor 1 VLGR1 the extracellular region extends up to... | 1 | Biochemistry |
In 2013, the Fujita group rediscovered that the molecular structure of liquids can be elucidated by X-ray crystallography in the presence of [(ZnI)(TPT)] crystalline sponges. The guest compounds, such as cyclohexanone, cinnamaldehyde were dropped onto the pre-made single crystal of crystalline sponges. The liquid sampl... | 0 | Organic Chemistry |
Enantiomer self-disproportionation is a process in stereochemistry describing the separation of a non-racemic mixture of enantiomers in an enantioenriched fraction and a more racemic fraction as a result of the formation of heterochiral or homochiral aggregates. This process is known to occur in achiral column chromato... | 4 | Stereochemistry |
The first proposed mechanism for a thermal rearrangement of an aromatic compound was for the automerization of naphthalene. It was suggested that the rearrangement of naphthalene occurred due to reversibility of the isomerization of azulene to naphthalene. This mechanism would therefore involve an azulene intermediate ... | 5 | Photochemistry |
The tog is a measure of thermal insulance of a unit area, also known as thermal resistance. It is commonly used in the textile industry and often seen quoted on, for example, duvets and carpet underlay.
The Shirley Institute in Manchester, England developed the tog as an easy-to-follow alternative to the SI unit of m⋅K... | 7 | Physical Chemistry |
Rapid fentanyl test strips are decriminalized in Tennessee. Representative William Lamberth, R-Portland, introduced HB2177 in the Tennessee General Assembly on January 31, 2022, followed by the introduction of SB2427 by Senator Jack Johnson, R-Franklin, the following day. The bill was eventually passed by Governor Bill... | 3 | Analytical Chemistry |
Passive daytime radiative cooling surfaces can mitigate extreme heat from the urban heat island effect which occurs in over 450 cities worldwide, where it can be as much as hotter in urban areas in comparison to surrounding rural areas. On an average hot summer day, the roofs of buildings can be hotter than the surro... | 7 | Physical Chemistry |
Strong spectral lines in the visible part of the electromagnetic spectrum often have a unique Fraunhofer line designation, such as K for a line at 393.366 nm emerging from singly-ionized calcium atom, Ca, though some of the Fraunhofer "lines" are blends of multiple lines from several different species.
In other cases, ... | 7 | Physical Chemistry |
Quantitative RT-PCR assay is considered to be the gold standard for measuring the number of copies of specific cDNA targets in a sample but it is poorly standardized. As a result, while there are numerous publications utilizing the technique, many provide inadequate experimental detail and use unsuitable data analysis... | 1 | Biochemistry |
It is important to note that while all non-competitive inhibitors bind the enzyme at allosteric sites (i.e. locations other than its active site)—not all inhibitors that bind at allosteric sites are non-competitive inhibitors. In fact, allosteric inhibitors may act as competitive, non-competitive, or uncompetitive inh... | 1 | Biochemistry |
Mobility and access to medical care are one of the major challenges for many disabled Iranian veterans. In Tehran alone there are very few wheelchair-accessible ramps, elevators and parking spots and the problem is more serious in smaller cities. This is while by 2018 over 5,000 disabled Iranian veterans, mostly living... | 1 | Biochemistry |
Some metal carbonyls are prepared by the reduction of metal halides in the presence of high pressure of carbon monoxide. A variety of reducing agents are employed, including copper, aluminum, hydrogen, as well as metal alkyls such as triethylaluminium. Illustrative is the formation of chromium hexacarbonyl from anhydro... | 0 | Organic Chemistry |
In mineralogy, crystal habit is the characteristic external shape of an individual crystal or aggregate of crystals. The habit of a crystal is dependent on its crystallographic form and growth conditions, which generally creates irregularities due to limited space in the crystallizing medium (commonly in rocks). | 3 | Analytical Chemistry |
An ambident nucleophile is one that can attack from two or more places, resulting in two or more products. For example, the thiocyanate ion (SCN) may attack from either the sulfur or the nitrogen. For this reason, the S2 reaction of an alkyl halide with SCN often leads to a mixture of an alkyl thiocyanate (R-SCN) and a... | 7 | Physical Chemistry |
Fluorescence correlation spectroscopy (FCS) is a statistical analysis, via time correlation, of stationary fluctuations of the fluorescence intensity. Its theoretical underpinning originated from L. Onsager's regression hypothesis. The analysis provides kinetic parameters of the physical processes underlying the fluct... | 7 | Physical Chemistry |
Metabonomics is defined as "the quantitative measurement of the dynamic multiparametric metabolic response of living systems to pathophysiological stimuli or genetic modification". The word origin is from the Greek μεταβολή meaning change and nomos meaning a rule set or set of laws. This approach was pioneered by Jerem... | 1 | Biochemistry |
The trivial name carbyne is the preferred IUPAC name.
Following the substitutive nomenclature, the molecule is viewed as methane with three hydrogen atoms removed, yielding the systematic name "methylidyne".
Following the additive nomenclature, the molecule is viewed as a hydrogen atom bonded to a carbon atom, yieldin... | 0 | Organic Chemistry |
Mollapour completed his postdoctoral research at the University of Sheffield and in 2006 he received the Federation of European Societies (FEBS) fellowship.
He joined the laboratory of Dr Len Neckers in Urological Oncology Branch, (Chief Dr. W. Marston Linehan), at the National Cancer Institute as a research fellow in ... | 1 | Biochemistry |
Hexafluoroethane's solid phase has two polymorphs. In the scientific literature, different phase transition temperatures have been stated. The latest works assign it at 103 K (−170 °C). Below 103 K it has a slightly disordered structure, and over the transition point, it has a body centered cubic structure. The critica... | 2 | Environmental Chemistry |
Decarbonylation of aldehydes, the reverse of CO insertion, is a well-recognized reaction:
:RCHO → RH + CO
The reaction is not widely practiced in part because the alkanes are less useful materials than are the aldehyde precursors. Furthermore, the reaction is not often conducted catalytically because the extruded CO ca... | 0 | Organic Chemistry |
Snow and ice sublime gradually at temperatures below the solid-liquid boundary (melting point) (generally 0 °C), and at partial pressures below the triple point pressure of , at a low rate. In freeze-drying, the material to be dehydrated is frozen and its water is allowed to sublime under reduced pressure or vacuum. Th... | 3 | Analytical Chemistry |
The Institute for Problems of Cryobiology and Cryomedicine in Kharkiv is one of the institutes of the National Academy of Science of Ukraine, and is the largest institute devoted to cryobiology research in the world. | 1 | Biochemistry |
MALDI-TOF spectra are often used for the identification of microorganisms such as bacteria or fungi. A portion of a colony of the microbe in question is placed onto the sample target and overlaid with matrix. The mass spectra of expressed proteins generated are analyzed by dedicated software and compared with stored pr... | 1 | Biochemistry |
Machine learning is a powerful tool that can be used in metabolomics analysis. Recently, scientists have developed retention time prediction software. These tools allow researchers to apply artificial intelligence to the retention time prediction of small molecules in complex mixture, such as human plasma, plant extrac... | 1 | Biochemistry |
Light scattering spectroscopy has been applied for detection of precancer in many organs including esophagus, colon, urinary bladder, oral cavity, cervix, pancreatic cyst, stomach, skin, and bile duct. | 7 | Physical Chemistry |
Debye forces, or dipole–induced dipole interactions, can also play a role in dispersive adhesion. These come about when a nonpolar molecule becomes temporarily polarized due to interaction with a nearby polar molecule. This "induced dipole" in the nonpolar molecule then is attracted to the permanent dipole, yielding a ... | 6 | Supramolecular Chemistry |
The N terminal domain is well conserved across different species. This may be due to its important function in substrate and cation binding. The residues involved in methionine binding are found in the N-terminal domain. | 1 | Biochemistry |
When writing the chemical formula for an ion, its net charge is written in superscript immediately after the chemical structure for the molecule/atom. The net charge is written with the magnitude before the sign; that is, a doubly charged cation is indicated as 2+ instead of +2. However, the magnitude of the charge is ... | 7 | Physical Chemistry |
Wiggins was appointed a Fellow of the Royal Society Te Apārangi in 1991. She received a medal for her research from the Health Research Council of New Zealand.
In 2017 Wiggins was featured as one of the Royal Society Te Apārangi's 150 women in 150 words. | 7 | Physical Chemistry |
The first use of bitumen in the New World was by aboriginal peoples. On the west coast, as early as the 13th century, the Tongva, Luiseño and Chumash peoples collected the naturally occurring bitumen that seeped to the surface above underlying petroleum deposits. All three groups used the substance as an adhesive. It i... | 7 | Physical Chemistry |
The settlement was mediated by retired judge Sir Henry Brooke. Before settlement had been reached, Chris Mallender explained: "We have reached a view that there are going to be no outright winners in this. In the circumstances we feel that its better that we try and find a middle ground, we settle in a way thats fair t... | 2 | Environmental Chemistry |
Poly(pentafluorophenyl acrylate) finds application in the synthesis of functional polymers by post-polymerization modification. Applications of the resulting polyacrylamides can be found in drug delivery, functional surfaces, and nanoparticles. | 7 | Physical Chemistry |
In crystallography, a crystallographic point group is a three dimensional point group whose symmetry operations are compatible with a three dimensional crystallographic lattice. According to the crystallographic restriction it may only contain one-, two-, three-, four- and sixfold rotations or rotoinversions. This redu... | 3 | Analytical Chemistry |
Nuclear matter is an idealized system of interacting nucleons (protons and neutrons) that exists in several phases of exotic matter that, as of yet, are not fully established. It is not matter in an atomic nucleus, but a hypothetical substance consisting of a huge number of protons and neutrons held together by only nu... | 7 | Physical Chemistry |
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