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Historically, this approach was seen through the New England colonies. Virtually every old home is a clapboard structure fitted with shutters applied in this manner. They were likely hung on the casing to allow for the frost heaves and movement of the structures in the harsh New England winters. The shutters simply all... | 1 | Applied and Interdisciplinary Chemistry |
Phoslactomycin (PLM) is a natural product from the isolation of Streptomyces species. This is an inhibitor of the protein serine/threonine phosphatase which is the protein phosphate 2A (PP2A). The PP2A involves the growth factor of the cell such as to induce the formation of mitogen-activated protein interaction and pl... | 1 | Applied and Interdisciplinary Chemistry |
Xenon tetroxide is a chemical compound of xenon and oxygen with molecular formula XeO, remarkable for being a relatively stable compound of a noble gas. It is a yellow crystalline solid that is stable below −35.9 °C; above that temperature it is very prone to exploding and decomposing into elemental xenon and oxygen (O... | 0 | Theoretical and Fundamental Chemistry |
In 1960, Vogel discovered that 1,2-divinylcyclopropane rearranges to cycloheptan-1,4-diene., After his discovery, a series of intense mechanistic investigations of the reaction followed in the 1960s, as researchers realized it bore resemblance (both structural and mechanistic) to the related rearrangement of vinylcyclo... | 0 | Theoretical and Fundamental Chemistry |
Esomeprazole, sold under the brand name Nexium [or Neksium] among others, is a medication which reduces stomach acid. It is used to treat gastroesophageal reflux disease, peptic ulcer disease, and Zollinger–Ellison syndrome. Its effectiveness is similar to that of other proton pump inhibitors (PPIs). It is taken by mou... | 0 | Theoretical and Fundamental Chemistry |
Scleroderma, polymyositis, and dermatomyositis elicit little or no CRP response. CRP levels also tend not to be elevated in systemic lupus erythematosus (SLE) unless serositis or synovitis is present. Elevations of CRP in the absence of clinically significant inflammation can occur in kidney failure. CRP level is an in... | 1 | Applied and Interdisciplinary Chemistry |
The protein carbaminohemoglobin plays an important role in the transport of carbon dioxide in the blood, and its biologically important in many functions:
# Transport of Carbon Dioxide: This process allows for the transport of carbon dioxide from the tissues to the lungs. It is essential for maintaining the balance of ... | 1 | Applied and Interdisciplinary Chemistry |
The hybrid difference scheme of Spalding (1970) is a combination of the central difference scheme and upwind difference scheme. It makes use of the central difference scheme, which is second order accurate, for small Peclet numbers (|Pe| < 2). For large Peclet numbers (|Pe| > 2) it uses the Upwind difference scheme, wh... | 1 | Applied and Interdisciplinary Chemistry |
Deprotonation of enolizable ketones, aldehydes, and esters gives enolates. Enolates can be trapped by the addition of electrophiles at oxygen. Silylation gives silyl enol ether. Acylation gives
esters such as vinyl acetate. | 0 | Theoretical and Fundamental Chemistry |
The type III partition system is the most recently discovered partition system. It is composed of tubulin-like GTPase termed TubZ, and the CBP is termed TubR.
Amino-acid sequence identity can go down to 21% for TubZ proteins.
The mechanism is similar to a treadmill mechanism:
# Multiple TubR dimer binds to the centrome... | 1 | Applied and Interdisciplinary Chemistry |
-Malic acid is the naturally occurring form, whereas a mixture of - and -malic acid is produced synthetically.
Malate plays an important role in biochemistry. In the C4 carbon fixation process, malate is a source of CO in the Calvin cycle. In the citric acid cycle, (S)-malate is an intermediate, formed by the addition ... | 1 | Applied and Interdisciplinary Chemistry |
On May 19, 2003, during a conference at the Sandestin Resort in Florida, a group consisting of about 65 chemists, engineers, and government officials met to create a narrowed down set of green principles relating to engineers and engineering. After 4 days of debating and proposals, the Sandestin Declaration was created... | 1 | Applied and Interdisciplinary Chemistry |
The most common reactions of benzene involve substitution of a proton by other groups. Electrophilic aromatic substitution is a general method of derivatizing benzene. Benzene is sufficiently nucleophilic that it undergoes substitution by acylium ions and alkyl carbocations to give substituted derivatives.
The most wid... | 1 | Applied and Interdisciplinary Chemistry |
PERK (encoded in humans by the gene EIF2AK3) responds mainly to endoplasmic reticulum stress and has two modes of activation. This kinase has a unique luminal domain that plays a role in activation. The classical model of activation states that the luminal domain is normally bound to 78-kDa glucose-regulated protein (G... | 1 | Applied and Interdisciplinary Chemistry |
In both naturally occurring and synthetic porous structures, the geometry of pores and capillaries is almost never perfectly cylindrical. Often, porous media contain networks of capillaries, much like a sponge. Since pore geometry affects the shape and curvature of an equilibrium meniscus, the Kelvin equation could be... | 1 | Applied and Interdisciplinary Chemistry |
"Ultraviolet" means "beyond violet" (from Latin ultra, "beyond"), violet being the color of the highest frequencies of visible light. Ultraviolet has a higher frequency (thus a shorter wavelength) than violet light.
UV radiation was discovered in 1801 when the German physicist Johann Wilhelm Ritter observed that invisi... | 0 | Theoretical and Fundamental Chemistry |
Several synthesis methods exist to produce LAGP in the form of bulk pellets or thin films, depending on the required performances and final applications. The synthesis path significantly affects the microstructure of the LAGP material, which plays a key role in determining its overall conductive properties. Indeed, a c... | 0 | Theoretical and Fundamental Chemistry |
MimoDB is a database of peptides that have been selected from random peptide libraries based on their ability to bind small compounds, nucleic acids, proteins, cells, and tissues through phage display. | 1 | Applied and Interdisciplinary Chemistry |
One of the earliest steps towards atomic physics was the recognition that matter was composed of atoms, in modern terms the basic unit of a chemical element. This theory was developed by John Dalton in the 18th century. At this stage, it wasn't clear what atoms were - although they could be described and classified by ... | 0 | Theoretical and Fundamental 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... | 0 | Theoretical and Fundamental Chemistry |
Many permanent bioadhesives (e.g., the oothecal foam of the mantis) are generated by a "mix to activate" process that involves hardening via covalent cross-linking. On non-polar surfaces the adhesive mechanisms may include van der Waals forces, whereas on polar surfaces mechanisms such as hydrogen bonding and binding t... | 1 | Applied and Interdisciplinary Chemistry |
The methyl red (MR) test can detect whether the mixed acid fermentation pathway occurs in microbes when given glucose. A pH indicator is used that turns the test solution red if the pH drops below 4.4. If the fermentation pathway has taken place, the mixture of acids it has produced will make the solution very acidic a... | 1 | Applied and Interdisciplinary Chemistry |
The Born series can also be written for other scattering quantities like the T-matrix which is closely related to the scattering amplitude.
Iterating Lippmann-Schwinger equation for the T-matrix we get
For the T-matrix stands only for retarded Greens operator . The standing wave Greens operator would give the K-matr... | 0 | Theoretical and Fundamental Chemistry |
Heat engines, refrigeration cycles and heat pumps usually involve a fluid to and from which heat is transferred while undergoing a thermodynamic cycle. This fluid is called the working fluid. Refrigeration and heat pump technologies often refer to working fluids as refrigerants. Most thermodynamic cycles make use of th... | 0 | Theoretical and Fundamental Chemistry |
Until late in the 20th century the word "radical" was used in chemistry to indicate any connected group of atoms, such as a methyl group or a carboxyl, whether it was part of a larger molecule or a molecule on its own. A radical is often known as an R group. The qualifier "free" was then needed to specify the unbound c... | 1 | Applied and Interdisciplinary Chemistry |
In corrosion, spalling occurs when a substance (metal or concrete) sheds tiny particles of corrosion products as the corrosion reaction progresses. Although they are not soluble or permeable, these corrosion products do not adhere to the parent material's surface to form a barrier to further corrosion, as happens in pa... | 1 | Applied and Interdisciplinary Chemistry |
A hexagonal structure that is often described as chicken wire-like can also be found in other types of chemical compounds such as:
* Non-aromatic polycyclic hydrocarbons, e.g. steroids like cholesterol
* Flat hexagonal hydrogen bonded trimesic acid (benzene-1,3,5-tricarboxylic acid), boric acid, or melamine-cyanuric ac... | 0 | Theoretical and Fundamental Chemistry |
The phosphaethynolate anion, also referred to as PCO, is the phosphorus-containing analogue of the cyanate anion with the chemical formula or . The anion has a linear geometry and is commonly isolated as a salt. When used as a ligand, the phosphaethynolate anion is ambidentate in nature meaning it forms complexes by c... | 0 | Theoretical and Fundamental Chemistry |
With the yeast two-hybrid system, gonococcal Opa proteins were found to interact with PKM2. The results suggest that direct molecular interaction with the host metabolic enzyme PKM2 is required for the acquisition of pyruvate and for gonococcal growth and survival. | 1 | Applied and Interdisciplinary Chemistry |
Gestation lasts 20 to 23 days. Neonates are pink and hairless, with closed eyes and ears. Fur begins to appear by three days, and young are completely furred except for the belly by seven days. Eyes and ears open by eight days. Weaning occurs from 12 to 14 days. Young born in spring and early summer attain adult weight... | 1 | Applied and Interdisciplinary Chemistry |
Zero electron kinetic energy (ZEKE) spectroscopy was developed with the idea of collecting only the resonance ionization photoelectrons that have extremely low kinetic energy. The technique involves waiting for a period of time after a resonance ionization experiment and then pulsing an electric field to collect the lo... | 0 | Theoretical and Fundamental Chemistry |
A Paul trap is a type of quadrupole ion trap that uses static direct current (DC) and radio frequency (RF) oscillating electric fields to trap ions. Paul traps are commonly used as components of a mass spectrometer. The invention of the 3D quadrupole ion trap itself is attributed to Wolfgang Paul who shared the Nobel P... | 0 | Theoretical and Fundamental Chemistry |
Octafluoropropane (CF) is the perfluorocarbon counterpart to the hydrocarbon propane. This non-flammable and non-toxic synthetic substance has applications in semiconductor production and medicine. It is also an extremely potent greenhouse gas. | 1 | Applied and Interdisciplinary Chemistry |
There are a number of AFPs found in insects, including those from Dendroides, Tenebrio and Rhagium beetles, spruce budworm and pale beauty moths, and midges (same order as flies). Insect AFPs share certain similarities, with most having higher activity (i.e. greater thermal hysteresis value, termed hyperactive) and a r... | 1 | Applied and Interdisciplinary Chemistry |
Palytoxin was first isolated, named and described from Palythoa toxica by Moore and Scheuer in a study published in 1971. They measured that its molar mass is approximately 3300 g/mol. They also identified it to be the substance that was probably responsible for the toxicity of P. toxica, but it was uncertain at the ti... | 0 | Theoretical and Fundamental Chemistry |
In this variant the OAA produced by aspartate aminotransferase in the bundle sheath is decarboxylated to PEP by PEPCK. The fate of PEP is still debated. The simplest explanation is that PEP would diffuse back to the mesophyll to serve as a substrate for PEPC. Because PEPCK uses only one ATP molecule, the regeneration o... | 0 | Theoretical and Fundamental Chemistry |
Before being able to use the minor head losses in an equation, the losses in the system due to friction must also be calculated.
Equation for friction losses:
= Frictional head loss
= Downstream velocity
= Gravity of Earth
= Hydraulic radius
=Total length of piping
= Fanning friction factor | 1 | Applied and Interdisciplinary Chemistry |
Thermite reactions have many uses. It is not an explosive; instead, it operates by exposing a very small area to extremely high temperatures. Intense heat focused on a small spot can be used to cut through metal or weld metal components together both by melting metal from the components, and by injecting molten metal f... | 0 | Theoretical and Fundamental Chemistry |
Schild regression is a radioligand binding assay. It is used for DNA labelling (5 and 3), leaving the nucleic acids intact. | 0 | Theoretical and Fundamental Chemistry |
On 28 March 2017, Drahoš announced his intention to stand in the 2018 presidential election. On 24 April 2017, he started gathering the signatures required to be registered as a candidate. In July 2017, after meeting with Drahoš, the leaders of Populars and Mayors, Pavel Bělobrádek and Petr Gazdík, announced that they ... | 0 | Theoretical and Fundamental Chemistry |
Simon retired from AVCO at the age of 65, moving to Pittsboro, North Carolina. She would operate her own consulting firm, Simon Associates, from her home until 1993. After concluding her research career, she served on numerous committees and advisory boards for government agencies, universities, and corporations. The m... | 0 | Theoretical and Fundamental Chemistry |
The non-fluorescent acetomethoxy derivate of calcein (calcein AM, AM = acetoxymethyl) is used in biology as it can be transported through the cellular membrane into live cells, which makes it useful for testing of cell viability and for short-term labeling of cells. Alternatively, Fura-2 , Furaptra , Indo-1 and aequori... | 0 | Theoretical and Fundamental Chemistry |
Magnetic resonance force microscopy (MRFM) is an imaging technique that acquires magnetic resonance images (MRI) at nanometer scales, and possibly at atomic scales in the future. MRFM is potentially able to observe protein structures which cannot be seen using X-ray crystallography and protein nuclear magnetic resonanc... | 0 | Theoretical and Fundamental Chemistry |
The term magnetofection, currently trademarked by the company OZ Biosciences, combines the words magnetic and transfection. Magnetofection uses nucleic acids associated with magnetic nanoparticles. These molecular complexes are then concentrated and transported into cells using an applied magnetic field. | 1 | Applied and Interdisciplinary Chemistry |
The location of substrate attachment to the complex has yet to be elucidated. It is believed that the Fe atoms closest to the interstitial carbon participate in substrate activation, but the terminal molybdenum is also a candidate for nitrogen fixation. X-ray crystallographic studies utilizing MoFe-protein and carbon m... | 0 | Theoretical and Fundamental Chemistry |
Efficiency was further improved by the development of a multi-stage injector which is powered not by live steam from the boiler but by exhaust steam from the cylinders, thereby making use of the residual energy in the exhaust steam which would otherwise go to waste. However, an exhaust injector also cannot work when th... | 1 | Applied and Interdisciplinary Chemistry |
Although technically speaking, DNA sequence polymorphism has been going on since the use of RFLP in the 1960s, the analysis has changed significantly over the years. DNA sequence polymorphism uses older techniques like RFLP, but on a larger scale. Sequencing is much faster and more efficient. The analysis is automated,... | 1 | Applied and Interdisciplinary Chemistry |
Complexometric indicators are water-soluble organic molecules. Some examples are:
* Calcein with EDTA for calcium
* Patton-Reeder Indicator with EDTA for calcium with magnesium
* Curcumin for boron, that forms Rosocyanine, although the red color change of curcumin also occurs for pH > 8.4
* Eriochrome Black T for alumi... | 0 | Theoretical and Fundamental Chemistry |
Frank was elected Fellow of the Royal Society in 1954, delivering the Bakerian Lecture in 1973. He was knighted in 1977. He was also awarded honorary degrees by seven universities.
In 1963 he won the Fernand Holweck Medal and Prize.
In 1967 he was awarded the A. A. Griffith Medal and Prize. He was also a member of the ... | 0 | Theoretical and Fundamental Chemistry |
Fermentation can be simply defined, in this context, as the conversion of sugar molecules into ethanol and carbon dioxide by yeast.
Fermentation practices have led to the discovery of ample microbial and antimicrobial cultures on fermented foods and products. | 1 | Applied and Interdisciplinary Chemistry |
Hydroxyl groups (-OH), found in alcohols, are polar and therefore hydrophilic (water liking) but their carbon chain portion is non-polar which make them hydrophobic. The molecule increasingly becomes overall more nonpolar and therefore less soluble in the polar water as the carbon chain becomes longer. Methanol has the... | 0 | Theoretical and Fundamental Chemistry |
Reversed phase liquid chromatography (RPLC) is the most important chromatographic method for measuring solute hydrophobicity. The non polar stationary phase mimics biological membranes. Peptide usage has many advantages because partition is not extended by the terminal charges in RPLC. Also, secondary structures format... | 0 | Theoretical and Fundamental Chemistry |
The use of a solvent gradient is very well developed in column chromatography but is less common in CCC. A solvent gradient is produced by increasing (or decreasing) the polarity of the mobile phase during the separation to achieve optimal resolution across a wider range of polarities. For example, a methanol-water mob... | 0 | Theoretical and Fundamental Chemistry |
Photosynthesis ( ) is a system of biological processes by which photosynthetic organisms, such as most plants, algae, and cyanobacteria, convert light energy, typically from sunlight, into the chemical energy necessary to fuel their activities. Photosynthetic organisms use intracellular organic compounds to store the c... | 0 | Theoretical and Fundamental Chemistry |
Select filter cloth based on the type filter aid used (refer Filter aid selection), adjust the advancing knife to optimize the knife advance rate per drum revolution. (Detail explained in Advance blade section) | 0 | Theoretical and Fundamental Chemistry |
Most synthetic radioisotopes have a short half-life. Though a health hazard, radioactive materials have many medical and industrial uses. | 0 | Theoretical and Fundamental Chemistry |
Zero-point energy evolved from historical ideas about the vacuum. To Aristotle the vacuum was , "the empty"; i.e., space independent of body. He believed this concept violated basic physical principles and asserted that the elements of fire, air, earth, and water were not made of atoms, but were continuous. To the atom... | 0 | Theoretical and Fundamental Chemistry |
About 70% of a humans total energy expenditure is due to the basal life processes taking place in the organs of the body (see table). About 20% of ones energy expenditure comes from physical activity and another 10% from thermogenesis, or digestion of food (postprandial thermogenesis). All of these processes require an... | 1 | Applied and Interdisciplinary Chemistry |
There have also been attempts to distill creosote from peat-tar, although mostly unsuccessful due to the problems with winning and drying peat on an industrial scale. Peat tar by itself has in the past been used as a wood preservative. | 0 | Theoretical and Fundamental Chemistry |
The spectral power distribution (SPD) of a source describes how much flux reaches the sensor over a particular wavelength and area. This effectively expresses the per-wavelength contribution to the radiometric quantity being measured. The SPD of a source is commonly shown as an SPD curve. SPD curves provide a visual re... | 0 | Theoretical and Fundamental Chemistry |
FTLE ridges have proven to be a simple and efficient tool for the visualize hyperbolic LCSs in a number of physical problems, yielding intriguing images of initial positions of hyperbolic LCSs in different applications (see, e.g., Figs. 5a-b). However, FTLE ridges obtained over sliding time windows do not form materia... | 1 | Applied and Interdisciplinary Chemistry |
Fluoroform was first obtained by Maurice Meslans in the violent reaction of iodoform with dry silver fluoride in 1894. The reaction was improved by Otto Ruff by substitution of silver fluoride by a mixture of mercury fluoride and calcium fluoride. The exchange reaction works with iodoform and bromoform, and the exchang... | 1 | Applied and Interdisciplinary Chemistry |
The Beer–Lambert law can be applied to the analysis of a mixture by spectrophotometry, without the need for extensive pre-processing of the sample. An example is the determination of bilirubin in blood plasma samples. The spectrum of pure bilirubin is known, so the molar attenuation coefficient is known. Measurements ... | 0 | Theoretical and Fundamental Chemistry |
Binding of Ca by the EF-hands causes an opening of the N- and C-domains, which exposes hydrophobic target-binding surfaces. These surfaces interact with complementary nonpolar segments on target proteins, typically consisting of groups of bulky hydrophobic amino acids separated by 10–16 polar and/or basic amino acids.... | 1 | Applied and Interdisciplinary Chemistry |
Glucuronidation occurs mainly in the liver, although the enzyme responsible for its catalysis, UDP-glucuronyltransferase, has been found in all major body organs (e.g., intestine, kidneys, brain, adrenal gland, spleen, and thymus). | 0 | Theoretical and Fundamental Chemistry |
In a high-temperature, classical paramagnet phase, the magnetic susceptibility is given by the Curie–Weiss law
Fitting experimental data to this equation determines a phenomenological Curie–Weiss temperature, . There is a second temperature, , where magnetic order in the material begins to develop, as evidenced by a n... | 0 | Theoretical and Fundamental Chemistry |
Polyunsaturated aldehydes are oxylipins that are formed from lipids (specifically the fatty acid portion of lipids) when diatoms are exposed to environmental stresses. Stresses can include nutrient limitations, grazing by predators, and wounding.
In particular, damage to diatom cells as a result of grazing by zooplankt... | 1 | Applied and Interdisciplinary Chemistry |
For assembly, a purified amphiphilic polypeptoid of specific sequence is dissolved in aqueous solution. These form a monolayer (Langmuir–Blodgett film) on the air-water interface with their hydrophobic side chains oriented in air and hydrophilic side chains in the water. When this mono-layer is shrunk, it buckles into ... | 0 | Theoretical and Fundamental Chemistry |
Sinker EDM, also called ram EDM, cavity type EDM or volume EDM, consists of an electrode and workpiece submerged in an insulating liquid such as, more typically, oil or, less frequently, other dielectric fluids. The electrode and workpiece are connected to a suitable power supply. The power supply generates an electric... | 1 | Applied and Interdisciplinary Chemistry |
Bacteria themselves do not have noticeable effect on concrete. However, sulfate-reducing bacteria (SRB) in untreated sewage water tend to produce hydrogen sulfide (HS), which is then oxidized in sulfuric acid (HSO) by atmospheric oxygen (abiotic reaction) and by aerobic bacteria present in biofilm (biotic reaction) on... | 1 | Applied and Interdisciplinary Chemistry |
Medical use of HPLC typically use mass spectrometer (MS) as the detector, so the technique is called LC-MS or LC-MS/MS for tandem MS, where two types of MS are operated sequentially. When the HPLC instrument is connected to more than one detector, it is called a hyphenated LC system. Pharmaceutical applications are th... | 0 | Theoretical and Fundamental Chemistry |
NpPS is a compound related to Lawessons reagent formed by the reaction of 1-bromonaphthalene with PS, this is a 1,3,2,4-dithiadiphosphetane 2,4-disulfide which has a naphth-1,8-diyl group holding the two phosphorus atoms together. The mechanism by which the NpPS forms is not yet elucidated, but it is thought to occur b... | 0 | Theoretical and Fundamental Chemistry |
The optical reflection in (semi-)conductors happens mostly in the surface region of the material. Therefore, the band structure of this region is extra important. Band structure usually covers bulk material. For deviations from this structure, it is conventional to use a band diagram. In a band diagram the x-axis is ch... | 0 | Theoretical and Fundamental Chemistry |
In the United States of America, microbial food cultures are regulated under the Food, Drug and Cosmetic Act. Section 409 of the 1958 Food Additives Amendment of the Food, Drug and Cosmetic Act, exempts from the definition of food additives substances generally recognized by experts as safe (GRAS) under conditions of t... | 1 | Applied and Interdisciplinary Chemistry |
Diisopropyl fluorophosphate (DIFP) is an irreversible inhibitor that blocks the action of serine protease. When it binds to the enzyme a nucleophilic substitution reaction occurs and releases one hydrogen fluoride molecule. The OH group in the active site acts as a nucleophile to attack the phosphorus in DIFP and form ... | 1 | Applied and Interdisciplinary Chemistry |
In 1856, William Henry Perkin, then age 18, was given a challenge by his professor, August Wilhelm von Hofmann, to synthesize quinine. In one attempt, Perkin oxidized aniline using potassium dichromate, whose toluidine impurities reacted with the aniline and yielded a black solid, suggesting a "failed" organic synthes... | 0 | Theoretical and Fundamental Chemistry |
The principle intracellular signalling protein is Imd, a death domain-containing protein that binds with FADD and Dredd to form a complex. Dredd is activated following ubiquitination by the Iap2 complex (involving Iap2, UEV1a, bend, and eff), which allows Dredd to cleave the 30 residue N-terminus of Imd, allowing it to... | 1 | Applied and Interdisciplinary Chemistry |
Continuous casting is a refinement of the casting process for the continuous, high-volume production of metal sections with a constant cross-section. Its primarily used to produce a semi-finished products for further processing. Molten metal is poured into an open-ended, water-cooled mold, which allows a skin' of soli... | 1 | Applied and Interdisciplinary Chemistry |
With the advent of more reactive catalysts, equilibrium RCM is observed quite often which may lead to a greater product distribution. The mechanism can be expanded to include the various competing equilibrium reactions as well as indicate where various side-products are formed along the reaction pathway, such as oligom... | 0 | Theoretical and Fundamental Chemistry |
Lohr and coworkers (2001) report that in a comprehensive study of pancreatic secretions of individuals without pancreatic carcinoma, p53 mutations could be found in the pancreatic juices of a small percentage of participants. Because mutations of p53 has been extensively found in pancreatic carcinomas, the researchers... | 1 | Applied and Interdisciplinary Chemistry |
Appointed to a teaching position at Birkbeck College, University of London, Ferrier's focus turned from polysaccharides to monosaccharides. New laboratory tools and methods enabled their reactions and mechanisms to be studied like normal organic compounds, rather than a separate field, and he pioneered this approach. I... | 0 | Theoretical and Fundamental Chemistry |
Atkinson friction factor is a measure of the resistance to airflow of a duct. It is widely used in the mine ventilation industry but is rarely referred to outside of it.
Atkinson friction factor is represented by the symbol and has the same units as air density (kilograms per cubic metre in SI units, lbfmin^2/ft^4 in ... | 1 | Applied and Interdisciplinary Chemistry |
Ion chromatography (or ion-exchange chromatography) is a form of chromatography that separates ions and ionizable polar molecules based on their affinity to the ion exchanger. It works on almost any kind of charged molecule—including small inorganic anions, large proteins, small nucleotides, and amino acids. However, i... | 0 | Theoretical and Fundamental Chemistry |
Isoschizomers are pairs of restriction enzymes specific to the same recognition sequence. For example, SphI (CGTAC/G) and BbuI (CGTAC/G) are isoschizomers of each other. The first enzyme discovered which recognizes a given sequence is known as the prototype; all subsequently identified enzymes that recognize that seque... | 1 | Applied and Interdisciplinary Chemistry |
Carbon-14 goes through radioactive beta decay:
: → + + + 156.5 keV
By emitting an electron and an electron antineutrino, one of the neutrons in the carbon-14 atom decays to a proton and the carbon-14 (half-life of 5,700 ± 30 years) decays into the stable (non-radioactive) isotope nitrogen-14.
As usual with beta deca... | 0 | Theoretical and Fundamental Chemistry |
The reading of data from 3D optical memories has been carried out in many different ways. While some of these rely on the nonlinearity of the light-matter interaction to obtain 3D resolution, others use methods that spatially filter the media's linear response. Reading methods include:
Two photon absorption (resulting ... | 0 | Theoretical and Fundamental Chemistry |
A disadvantage of AFM compared with the scanning electron microscope (SEM) is the single scan image size. In one pass, the SEM can image an area on the order of square millimeters with a depth of field on the order of millimeters, whereas the AFM can only image a maximum scanning area of about 150×150 micrometers and a... | 0 | Theoretical and Fundamental Chemistry |
The procedure involves heating a sample of genomic DNA until it denatures into the single stranded-form, and then slowly cooling it, so the strands can pair back together. While the sample is cooling, measurements are taken of how much of the DNA is base paired at each temperature.
The amount of single and double-str... | 1 | Applied and Interdisciplinary Chemistry |
Two main subunits of PSI, PsaA and PsaB, are closely related proteins involved in the binding of the vital electron transfer cofactors P, Acc, A, A, and F. PsaA and PsaB are both integral membrane proteins of 730 to 750 amino acids that contain 11 transmembrane segments. A [[4Fe-4S|[4Fe-4S] iron-sulfur cluster]] called... | 0 | Theoretical and Fundamental Chemistry |
Phosphaalkenes (IUPAC name: alkylidenephosphanes) are organophosphorus compounds with double bonds between carbon and phosphorus(III) with the formula RC=PR. In the compound phosphorine one carbon atom in benzene is replaced by phosphorus. The reactivity of phosphaalkenes is often compared to that of alkenes and not to... | 0 | Theoretical and Fundamental Chemistry |
The expression of genes in the operon is controlled by three differentially regulated promoters, two of which are controlled by RpoS encoded sigma factor σ.
* csiD : is σ-dependent and is activated exclusively upon carbon starvation because cAMP-CRP acts an essential activator for σ containing RNA polymerase at the cs... | 1 | Applied and Interdisciplinary Chemistry |
The ratio r between the apparent molar volume of a dissolved electrolyte in a concentrated solution and the molar volume of the solvent (water) can be linked to the statistical component of the activity coefficient of the electrolyte and its solvation shell number h:
where ν is the number of ions due to dissociation o... | 0 | Theoretical and Fundamental Chemistry |
On 5 October 2016, Ranga Dias and Isaac F. Silvera of Harvard University released claims of experimental evidence that solid metallic hydrogen had been synthesized in the laboratory at a pressure of around using a diamond anvil cell. This manuscript was available in October 2016, and a revised version was subsequently... | 0 | Theoretical and Fundamental Chemistry |
TCF7L2 is downstream of the WNT/β-catenin pathways. The activation of the WNT/β-catenin pathways have been associated demyelination in multiple sclerosis. TCF7L2 is unregulated during early remyelination, leading scientists to believe that it is involved in remyelination. TCF7L2 could act in dependence or independent o... | 1 | Applied and Interdisciplinary Chemistry |
The term "eutrophication" comes from the Greek eutrophos, meaning "well-nourished". Water bodies with very low nutrient levels are termed oligotrophic and those with moderate nutrient levels are termed mesotrophic. Advanced eutrophication may also be referred to as dystrophic and hypertrophic conditions. Thus, eutrophi... | 1 | Applied and Interdisciplinary Chemistry |
Galanin-like peptide (GALP) is a neuropeptide present in humans and other mammals. It is a 60-amino acid polypeptide produced in the arcuate nucleus of the hypothalamus and the posterior pituitary gland. It is involved in the regulation of appetite and may also have other roles such as in inflammation, sex behavior, an... | 1 | Applied and Interdisciplinary Chemistry |
The mass-independent distribution of isotopes in stratospheric ozone can be transferred to carbon dioxide (CO). This anomalous isotopic composition in CO can be used to quantify gross primary production, the uptake of CO by vegetation through photosynthesis. This effect of terrestrial vegetation on the isotopic signatu... | 0 | Theoretical and Fundamental Chemistry |
The removal of phosphorus can in principle remediate eutrophication. Of the several phosphate sorbents, alum (aluminium sulfate) is of practical interest.) Many materials have been investigated. The phosphate sorbent is commonly applied in the surface of the water body and it sinks to the bottom of the lake reducing... | 1 | Applied and Interdisciplinary Chemistry |
As with other members of the penicillin family, the chemical structure of oxacillin features a 6-aminopenicillanic acid nucleus with a substituent attached to the amino group. The 6-aminopenicillanic acid nucleus consists of a thiazolidine ring attached to a β-lactam ring, which is the active moiety responsible for the... | 0 | Theoretical and Fundamental Chemistry |
Most homoleptic complexes of NCS feature isothiocyanate ligands (N-bonded). All first-row metals bind thiocyanate in this way. Octahedral complexes [M(NCS)] include M = Ti(III), Cr(III), Mn(II), Fe(III), Ni(II), Mo(III), Tc(IV), and Ru(III). Four-coordinated tetrakis(isothiocyanate) complexes would be tetrahedral si... | 0 | Theoretical and Fundamental Chemistry |
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