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Relatively few bacteria have been comprehensively studied for their protein–protein interactions. However, none of these interactomes are complete in the sense that they captured all interactions. In fact, it has been estimated that none of them covers more than 20% or 30% of all interactions, primarily because most of...
1
Applied and Interdisciplinary Chemistry
In nature, pyruvate oxidase employs two cofactors thiamine pyrophosphate (ThDP) and Flavin adenine dinucleotide (FAD) to catalyze a conversion of pyruvate to acetyl phosphate. First, ThDP mediates a decarboxylation of pyruvate and generates an active aldehyde as a product. The aldehyde is then oxidized by FAD and is su...
0
Theoretical and Fundamental Chemistry
In July 1914—shortly before the outbreak of World War I—Hahn was recalled to active duty with the army in a Landwehr regiment. They marched through Belgium, where the platoon he commanded was armed with captured machine guns. He was awarded the Iron Cross (2nd Class) for his part in the First Battle of Ypres. He was a ...
0
Theoretical and Fundamental Chemistry
The abundance of total alpha elements in stars is usually expressed in terms of logarithms, with astronomers customarily using a square bracket notation: where is the number of alpha elements per unit volume, and is the number of iron nuclei per unit volume. It is for the purpose of calculating the number that which...
0
Theoretical and Fundamental Chemistry
In quantum mechanics, the Hellmann–Feynman theorem relates the derivative of the total energy with respect to a parameter to the expectation value of the derivative of the Hamiltonian with respect to that same parameter. According to the theorem, once the spatial distribution of the electrons has been determined by sol...
0
Theoretical and Fundamental Chemistry
For incident photon energies E larger than two times the rest mass of the electron (1.022 MeV), pair production can occur. The resulting positron annihilates with one of the surrounding electrons, typically producing two photons with 511 keV. In a real detector (i.e. a detector of finite size) it is possible that after...
0
Theoretical and Fundamental Chemistry
By conservation of mass, the inverse-square law requires that the radially outward velocity must be inversely proportional to the square of the distance from the origin (the center of the bubble). Therefore, letting be some function of time, In the case of zero mass transport across the bubble surface, the velocity ...
1
Applied and Interdisciplinary Chemistry
The PCP protein has been identified in dinoflagellate genomes in at least two forms, a homodimeric form composed of two 15-kD monomers, and a monomeric form of around 32kD believed to have evolved from the homodimeric form via gene duplication. The monomeric form consists of two pseudosymmetrical eight-helix domains in...
0
Theoretical and Fundamental Chemistry
Canadian Reference Materials (CRM) are certified reference materials of high-quality and reliability produced by the National Metrology Institute of Canada – the National Research Council Canada. The NRC Certified Reference Materials program is operated by the Measurement Science and Standards portfolio and provides CR...
1
Applied and Interdisciplinary Chemistry
On Earth, naturally occurring radionuclides fall into three categories: primordial radionuclides, secondary radionuclides, and cosmogenic radionuclides. * Radionuclides are produced in stellar nucleosynthesis and supernova explosions along with stable nuclides. Most decay quickly but can still be observed astronomicall...
0
Theoretical and Fundamental Chemistry
The Ames process is a process by which pure uranium metal is obtained. It can be achieved by mixing any of the uranium halides (commonly uranium tetrafluoride) with magnesium metal powder or aluminium metal powder.
1
Applied and Interdisciplinary Chemistry
Initiation involves the small subunit of the ribosome binding to the 5 end of mRNA with the help of initiation factors (IF). In bacteria and a minority of archaea, initiation of protein synthesis involves the recognition of a purine-rich initiation sequence on the mRNA called the Shine–Dalgarno sequence. The Shine–Dal...
1
Applied and Interdisciplinary Chemistry
The naming of polycyclic alkanes is more complex, with the base name indicating the number of carbons in the ring system, a prefix indicating the number of rings (e.g., "bicyclo"), and a numeric prefix before that indicating the number of carbons in each part of each ring, exclusive of vertices. For instance, a bicycl...
0
Theoretical and Fundamental Chemistry
Sprinkler systems are intended to either control the fire or to suppress the fire. Control mode sprinklers are intended to control the heat release rate of the fire to prevent building structure collapse, and pre-wet the surrounding combustibles to prevent fire spread. The fire is not extinguished until the burning com...
1
Applied and Interdisciplinary Chemistry
Matrix-assisted inlet ionization (MAII) has shown that the laser is not necessary for the ionization process. Ions are formed when matrix-analyte is introduced to the vacuum of a mass spectrometer through an inlet aperture. LSI is a subset of MAII and is now called laserspray inlet ionization (LSII). Laser spray inlet...
0
Theoretical and Fundamental Chemistry
Its physiological function is unknown. It is a member of the C1Q domain proteins which have important signalling roles in inflammation and in adaptive immunity.
1
Applied and Interdisciplinary Chemistry
The second of these was developed by Lea and Nurse. The bed is 25 mm in diameter and 10 mm thick. The desired porosity (which may vary in the range 0.4 to 0.6) is obtained by using a calculated weight of sample, pressed to precisely these dimensions. The required weight is given by: A flowmeter consisting of a long ...
1
Applied and Interdisciplinary Chemistry
Helium is in the same category as alkaline earths with respect to spectroscopy, as it has two electrons in the S subshell as do the other alkaline earths. Helium has a diffuse series of doublet lines with wavelengths 5876, 4472 and 4026 Å. Helium when ionised is termed He and has a spectrum very similar to hydrogen but...
0
Theoretical and Fundamental Chemistry
ScerTF is a comprehensive database of position weight matrices for the transcription factors of Saccharomyces.
1
Applied and Interdisciplinary Chemistry
;closo- :The boron atoms lie on each vertex of the octahedron and are sp hybridized. One sp-hybrid radiates away from the structure forming the bond with the hydrogen atom. The other sp-hybrid radiates into the center of the structure forming a large bonding molecular orbital at the center of the cluster. The remaining...
0
Theoretical and Fundamental Chemistry
Instead of collecting onto a greased substrate or agar plate, impingers have been developed to impact bioaerosols into liquids, such as deionized water or phosphate buffer solution. Collection efficiencies of impingers are shown by Ehrlich et al. (1966) to be generally higher than similar single stage impactor designs....
0
Theoretical and Fundamental Chemistry
Levofloxacin is a third-generation fluoroquinolone, being one of the isomers of ofloxacin, which was a broader-spectrum conformationally locked analog of norfloxacin; both ofloxacin and levofloxaxin were synthesized and developed by scientists at Daiichi Seiyaku. The Daiichi scientists knew that ofloxacin was racemic, ...
0
Theoretical and Fundamental Chemistry
The Bragg condition is correct for very large crystals. Because the scattering of X-rays and neutrons is relatively weak, in many cases quite large crystals with sizes of 100 nm or more are used. While there can be additional effects due to crystal defects, these are often quite small. In contrast, electrons interact t...
0
Theoretical and Fundamental Chemistry
radioisotope - radioisotopic labelling - Raman spectroscopy - random coil - Ras gene - Ras protein - reading frame - receptor (biochemistry) - receptor antagonist - receptor protein-tyrosine kinase - recombinant fusion protein - recombinant interferon-gamma - recombinant protein - recombination - redox - redox reaction...
1
Applied and Interdisciplinary Chemistry
Concern about the increasing discoveries of bay pollution problems, and of the institutional challenges of organizing bay restoration programs over a large geographical area, led to Congress directing the US Environmental Protection Agency (EPA) to take a greater role in studying the scientific and technical aspects of...
1
Applied and Interdisciplinary Chemistry
Optical transitions must preserve the total spin and occur only between levels of the same total spin. Specifically, transitions between the ground and excited states (with equal spin) can be induced using a green laser with a wavelength of 546 nm. Transitions E→A and E→A are non-radiative, while A →E has both a non-ra...
0
Theoretical and Fundamental Chemistry
In this technique a square or rectangular paper is used. Here the sample is applied to one of the corners and development is performed at a right angle to the direction of the first run.
0
Theoretical and Fundamental Chemistry
The Plateau–Rayleigh instability is named for Joseph Plateau and Lord Rayleigh. In 1873, Plateau found experimentally that a vertically falling stream of water will break up into drops if its length is greater than about 3.13 to 3.18 times its diameter, which he noted is close to Pi|. Later, Rayleigh showed theoretica...
1
Applied and Interdisciplinary Chemistry
The first approved gene therapy clinical research in the US took place on 14 September 1990, at the National Institutes of Health (NIH), under the direction of William French Anderson. Four-year-old Ashanti DeSilva received treatment for a genetic defect that left her with adenosine deaminase deficiency (ADA-SCID), a s...
1
Applied and Interdisciplinary Chemistry
Several sources have reported that Fraser-Reid was nominated in 1998 for a Nobel Prize in chemistry for his work on oligosaccharides and immune responses. This statement cannot be verified since the names of the nominees are never publicly announced, and neither are they told that they have been considered for the Priz...
0
Theoretical and Fundamental Chemistry
Protein interaction networks have been used to predict the function of proteins of unknown functions. This is usually based on the assumption that uncharacterized proteins have similar functions as their interacting proteins (guilt by association). For example, YbeB, a protein of unknown function was found to interact ...
1
Applied and Interdisciplinary Chemistry
A tosylhydrazone in organic chemistry is a functional group with the general structure RR'C=N-NH-Ts where Ts is a tosyl group. Organic compounds having this functional group can be accessed by reaction of an aldehyde or ketone with tosylhydrazine.
0
Theoretical and Fundamental Chemistry
The use of the term explosion is somewhat loose in this context, and can be confusing. This confusion is exacerbated by the tendency for airburst energies to be expressed in terms of nuclear weapon yields, as when the Tunguska airburst is given a rating in megatons of TNT. Large meteoroids do not explode in the sense o...
1
Applied and Interdisciplinary Chemistry
Because prokaryotic mRNA does not need to be processed or transported, translation by the ribosome can begin immediately after the end of transcription. Therefore, it can be said that prokaryotic translation is coupled to transcription and occurs co-transcriptionally. Eukaryotic mRNA that has been processed and transpo...
1
Applied and Interdisciplinary Chemistry
Until Yukito Tanabe and Satoru Sugano published their paper "On the absorption spectra of complex ions", in 1954, little was known about the excited electronic states of complex metal ions. They used Hans Bethes crystal field theory and Giulio Racahs linear combinations of Slater integrals, now called Racah parameters...
0
Theoretical and Fundamental Chemistry
These are solutions containing FSL Kode constructs where the construct will exist as a clear micellular dispersion. FSL-GB3 as a solution/gel has been used to inhibit HIV infection and to neutralise Shiga toxin. FSL blood group A as a solution has been used to neutralise circulating antibodies in a mouse model and allo...
1
Applied and Interdisciplinary Chemistry
Based on the statistics presented in earlier discussions, there is controversy with regard to a perceived lack of diversity within the donor sperm pool of many sperm banks. This includes, but is not limited to, height requirements implemented by some sperm banks. As a result, it is alleged that potential sperm recipien...
1
Applied and Interdisciplinary Chemistry
Blood glucose levels are maintained at a steady state concentration by balancing the rate of entry of glucose into the blood stream (i.e. by ingestion or released from cells) and the rate of glucose uptake by body tissues. Changes in the rate of input will be met with a change in consumption, and vice versa, so that bl...
0
Theoretical and Fundamental Chemistry
The arrangement of the ligands is fixed for a given complex, but in some cases it is mutable by a reaction that forms another stable isomer. There exist many kinds of isomerism in coordination complexes, just as in many other compounds.
0
Theoretical and Fundamental Chemistry
The oily bilge waste comes from a ship's engines and fuel systems. The waste is required to be offloaded when a ship is in port and either burned in an incinerator or taken to a waste management facility. In rare occasions, bilge water can be discharged into the ocean but only after almost all oil is separated out.
1
Applied and Interdisciplinary Chemistry
BMS has been employed for the reduction of many functional groups. Reductions of aldehydes, ketones, epoxides, esters, and carboxylic acids give the corresponding alcohols. Lactones are reduced to diols, and nitriles are reduced to amines. Acid chlorides and nitro groups are not reduced by BMS. Borane dimethylsulfide i...
0
Theoretical and Fundamental Chemistry
The M-N-O unit in nitrosyl complexes is usually linear, or no more than 15° from linear. In some complexes, however, especially when back-bonding is less important, the M-N-O angle can strongly deviate from 180°. Linear and bent NO ligands can be distinguished using infrared spectroscopy. Linear M-N-O groups absorb in...
0
Theoretical and Fundamental Chemistry
The Centre for Industry Education Collaboration (CIEC) is a British education resource for information about the chemical industry in the UK.
1
Applied and Interdisciplinary Chemistry
Electrochemical engineering combines the study of heterogeneous charge transfer at electrode/electrolyte interphases with the development of practical materials and processes. Fundamental considerations include electrode materials and the kinetics of redox species. The development of the technology involves the study o...
0
Theoretical and Fundamental Chemistry
Mefloquine is contraindicated in those with a previous history of seizures or a recent history of psychiatric disorders.
0
Theoretical and Fundamental Chemistry
Some antibacterial drugs such as penicillin interfere with the production of peptidoglycan by binding to bacterial enzymes known as penicillin-binding proteins or DD-transpeptidases. Penicillin-binding proteins form the bonds between oligopeptide crosslinks in peptidoglycan. For a bacterial cell to reproduce through bi...
1
Applied and Interdisciplinary Chemistry
Macro-creatine kinase (macro-CK) is a macroenzyme, an enzyme of high molecular weight and prolonged half-life found in human serum. It is one of the most common macroenzymes. Macro-CK type 1 is a complex formed by one of the creatine kinase isoenzyme types, typically CK-BB, and antibodies; typically IgG, sometimes IgA,...
1
Applied and Interdisciplinary Chemistry
Phycoerythrocyanin is a kind of phycobiliprotein, magenta chromoprotein involved in photosynthesis of some Cyanobacteria. This chromoprotein consists of alpha- and beta-subunits, generally aggregated as hexamer. Alpha-phycoerythrocyanin contains a phycoviolobilin, a violet bilin, that covalently attached at Cys-84, and...
1
Applied and Interdisciplinary Chemistry
The translational energy of the molecule is given by the kinetic energy expression: where is the mass of the molecule and is its velocity.
0
Theoretical and Fundamental Chemistry
The Rayleigh–Kuo criterion (sometimes called the Kuo criterion) is a stability condition for a fluid. This criterion determines whether or not a barotropic instability can occur, leading to the presence of vortices (like eddies and storms). The Kuo criterion states that for barotropic instability to occur, the gradient...
1
Applied and Interdisciplinary Chemistry
*Airy wave theory *Benjamin–Bona–Mahony equation *Boussinesq approximation (water waves) *Cnoidal wave *Camassa–Holm equation *Davey–Stewartson equation *Kadomtsev–Petviashvili equation (also known as KP equation) *Korteweg–de Vries equation (also known as KdV equation) *Luke's variational principle *Nonlinear Schrödin...
1
Applied and Interdisciplinary Chemistry
Heavily doped semiconductors, such as silicon-germanium (SiGe) thermoelectric couples (also called thermocouples or unicouples), are used in space exploration. SiGe alloys present good thermoelectric properties. Their performance in thermoelectric power production is characterized by high dimensionless figures-of-merit...
0
Theoretical and Fundamental Chemistry
The 1904 petition to the Chemical Society was a petition written by 19 female chemists setting out the reasons why they should be afforded the status of Fellow of the Chemical Society. The petition is of importance as it eventually led to the admission of women as Fellows of the Society (one of the Societies that amalg...
1
Applied and Interdisciplinary Chemistry
Conformations can be described by dihedral angles, which are used to determine the placements of atoms and their distance from one another and can be visualized by Newman projections. A dihedral angle can indicate staggered and eclipsed orientation, but is specifically used to determine the angle between two specific a...
0
Theoretical and Fundamental Chemistry
Bloch equations are used to calculate the nuclear magnetization M = (M, M, M) as a function of time when relaxation times T and T are present. Bloch equations are phenomenological equations that were introduced by Felix Bloch in 1946. Where is the cross-product, γ is the gyromagnetic ratio and B(t) = (B(t), B(t), B + ...
0
Theoretical and Fundamental Chemistry
A riffle box is a box containing a number (between 3 and 12) of "chutes" - slotted paths through which particles of the sample may slide. The sample is dropped into the top, and the box produces two equally divided subsamples. Riffle boxes are commonly used in mining to reduce the size of crushed rock samples prior t...
0
Theoretical and Fundamental Chemistry
Anodizing is one of the more environmentally friendly metal finishing processes. Except for organic (aka integral colour) anodizing, the by-products contain only small amounts of heavy metals, halogens, or volatile organic compounds. Integral color anodizing produces no VOCs, heavy metals, or halogens as all of the byp...
1
Applied and Interdisciplinary Chemistry
* 1912: Nobel Prize in Chemistry for his discovery of the Grignard reagent (shared the award with fellow Frenchman Paul Sabatier). * 1912: Lavoisier Medal, Société Chimique de France * 1933: Légion d'Honneur, Commander
0
Theoretical and Fundamental Chemistry
Common roll-to-roll coating processes include: * Air knife coating * Anilox coater * Flexo coater * Gap Coating ** Knife-over-roll coating * Gravure coating * Hot melt coating- when the necessary coating viscosity is achieved by temperature rather than solution of the polymers etc. This method commonly implies slot-di...
1
Applied and Interdisciplinary Chemistry
Some elements like potassium, uranium, and thorium are naturally radioactive and give off gamma rays as they decay. Electromagnetic radiation from these isotopes can be detected by a Gamma-Ray Spectrometer (GRS) dropped toward the planetary surface or observed from orbit. An orbiting instrument can map the surface dist...
0
Theoretical and Fundamental Chemistry
Whilst calculation of thermal transmittance can readily be carried out with the help of software which is compliant with ISO 6946, a thermal transmittance calculation does not fully take workmanship into account and it does not allow for adventitious circulation of air between, through and around sections of insulation...
0
Theoretical and Fundamental Chemistry
After the processed antigen (peptide) is complexed to the MHC molecule, they both migrate together to the cell membrane, where they are exhibited (elaborated) as a complex that can be recognized by the CD 4+ (T helper cell) – a type of white blood cell. This is known as antigen presentation. However, the epitopes (conf...
1
Applied and Interdisciplinary Chemistry
Chemical milling is normally performed in a series of five steps: cleaning, masking, scribing, etching, and demasking. [https://www.youtube.com/watch?v=YtnUZanxtLs Video of chemical milling process] [https://www.fotofab.com/photo-etching-process/ Learn more about the video]
1
Applied and Interdisciplinary Chemistry
Several configurations of the refrigeration cycle incorporate an economizer, and benefit from this idea. The design of these systems requires expertise and extra components. Pressure drop, electronic valve control, and oil drag, must all be considered.
0
Theoretical and Fundamental Chemistry
In the immersed Membrane Bioreactor (iMBR) configuration, the filtration element is installed in either the main bioreactor vessel or in a separate tank. The modules are positioned above the aeration system, fulfilling two functions, the supply of oxygen and the cleaning of the membranes. The membranes can be a flat sh...
1
Applied and Interdisciplinary Chemistry
The oxidation state in compound naming for transition metals and lanthanides and actinides is placed either as a right superscript to the element symbol in a chemical formula, such as Fe or in parentheses after the name of the element in chemical names, such as iron(III). For example, is named iron(III) sulfate and it...
0
Theoretical and Fundamental Chemistry
Casting in bronze reached high perfection in England, where a number of monuments yet remain. William Torel, goldsmith and citizen of London, made a bronze effigy of Henry III, and later that of Queen Eleanor for their tombs in Westminster Abbey; the effigy of Edward III was probably the work of one of his pupils. No b...
1
Applied and Interdisciplinary Chemistry
Therapeutic monoclonal antibodies act through multiple mechanisms, such as blocking of targeted molecule functions, inducing apoptosis in cells which express the target, or by modulating signalling pathways.
1
Applied and Interdisciplinary Chemistry
Streptococcus pyogenes has evolved an interwoven complex of gene regulatory mechanisms in the SIP signaling pathway by implanting a pH sensitive histidine switch onto the quorum-sensing ropB protein. During the neutral to basic pH conditions whether synthetically induced or naturally caused by low population density of...
1
Applied and Interdisciplinary Chemistry
Nitroalkenes are useful intermediates for various chemical functionalities. * A nitroalkene behaving as a Michael acceptor in the synthesis of Lycoricidine: * Nitroalkene acting as an activated dienophile toward butadiene in a Diels-Alder cycloaddition: * The synthesis of pyrrole derivatives via the Barton–Zard reactio...
0
Theoretical and Fundamental Chemistry
In general, TST has provided researchers with a conceptual foundation for understanding how chemical reactions take place. Even though the theory is widely applicable, it does have limitations. For example, when applied to each elementary step of a multi-step reaction, the theory assumes that each intermediate is long-...
0
Theoretical and Fundamental Chemistry
Nowadays descriptions of gene regulation are based on the approximations of equilibrium binding in dilute solutions, although it is clear that these assumptions are in fact violated in chromatin. The dilute-solution approximation is violated for two reasons. First, the chromatin content is far from being dilute, and se...
1
Applied and Interdisciplinary Chemistry
*[https://www.aivc.org/resources/airbase Publications] from the Air Infiltration & Ventilation Centre (AIVC)
1
Applied and Interdisciplinary Chemistry
In electrochemistry differential capacitance is a parameter introduced for characterizing electrical double layers: where σ is surface charge and ψ is electric surface potential. Capacitance is usually defined as the stored charge between two conducting surfaces separated by a dielectric divided by the voltage between ...
0
Theoretical and Fundamental Chemistry
Haloalkanes are reactive towards nucleophiles. They are polar molecules: the carbon to which the halogen is attached is slightly electropositive where the halogen is slightly electronegative. This results in an electron deficient (electrophilic) carbon which, inevitably, attracts nucleophiles.
0
Theoretical and Fundamental Chemistry
Otto Hahn was born in Frankfurt am Main on 8 March 1879, the youngest son of Heinrich Hahn (1845–1922), a prosperous glazier (and founder of the Glasbau Hahn company), and Charlotte Hahn née Giese (1845–1905). He had an older half-brother Karl, his mothers son from her previous marriage, and two older brothers, Heiner ...
0
Theoretical and Fundamental Chemistry
In some molecules, torsional strain can contribute to ring strain in addition to angle strain. One example of such a molecule is cyclopropane. Cyclopropanes carbon-carbon bonds form angles of 60°, far from the preferred angle of 109.5° angle in alkanes, so angle strain contributes most to cyclopropanes ring strain. How...
0
Theoretical and Fundamental Chemistry
Most metal ores contain metals of interest (e.g. gold, copper, nickel) in some oxidized states and thus the goal of most metallurgical operations is to chemically reduce them to their pure metallic form. The question is how to convert highly impure metal ores into purified bulk metals. A vast array of operations have b...
1
Applied and Interdisciplinary Chemistry
The Ecophysiology Department, headed by Lotte Søgaard-Andersen, focuses on understanding how intracellular signalling networks are wired to allow bacteria to adapt and differentiate in response to changes in the environment or in response to self-generated signals. Specifically, the department has two aims. Firstly, th...
0
Theoretical and Fundamental Chemistry
Certain azo dyes can break down under reductive conditions to release any of a group of defined aromatic amines. Consumer goods which contain listed aromatic amines originating from azo dyes were prohibited from manufacture and sale in European Union countries in September 2003. As only a small number of dyes contained...
0
Theoretical and Fundamental Chemistry
Unhindered settling is a process that removes the discrete particles in a very low concentration without interference from nearby particles. In general, if the concentration of the solutions is lower than 500 mg/L total suspended solids, sedimentation will be considered discrete. Concentrations of raceway effluent tota...
0
Theoretical and Fundamental Chemistry
In epigenetics, proline isomerization is the effect that cis-trans isomerization of the amino acid proline has on the regulation of gene expression. Similar to aspartic acid, the amino acid proline has the rare property of being able to occupy both cis and trans isomers of its prolyl peptide bonds with ease. Peptidyl-p...
0
Theoretical and Fundamental Chemistry
* Journal of Agricultural and Food Chemistry * Journal of the American Oil Chemists Society' * [http://www.elsevier.com/wps/find/journaldescription.cws_home/522499/description#description Biophysical Chemistry journal] * Magnetic Resonance in Chemistry * Starke/ Starch Journal * [http://journalofdairyscience.org/ Journ...
0
Theoretical and Fundamental Chemistry
Stress corrosion cracking mainly affects metals and metallic alloys. A comparable effect also known as environmental stress cracking also affects other materials such as polymers, ceramics and glass.
1
Applied and Interdisciplinary Chemistry
Self-cleaning surfaces are a class of materials with the inherent ability to remove any debris or bacteria from their surfaces in a variety of ways. The self-cleaning functionality of these surfaces are commonly inspired by natural phenomena observed in lotus leaves, gecko feet, and water striders to name a few. The ma...
0
Theoretical and Fundamental Chemistry
Using correlation diagrams one can derive selection rules for the following generalized classes of pericyclic reactions. Each of these particular classes is further generalized in the generalized Woodward–Hoffmann rules. The more inclusive bond topology descriptors antarafacial and suprafacial subsume the terms conro...
0
Theoretical and Fundamental Chemistry
In-Methylcyclophanes are organic compounds and members of a larger family of cyclophanes. These compounds are used to study how chemical bonds in molecules adapt to strain. In-methylcyclophanes in particular have a methyl group in proximity to a benzene ring. This is only possible when both methyl group and ring are at...
0
Theoretical and Fundamental Chemistry
A settling basin, settling pond or decant pond is an earthen or concrete structure using sedimentation to remove settleable matter and turbidity from wastewater. The basins are used to control water pollution in diverse industries such as agriculture, aquaculture, and mining. Turbidity is an optical property of water ...
1
Applied and Interdisciplinary Chemistry
Electroless deposition (ED) or electroless plating is defined as the autocatalytic process through which metals and metal alloys are deposited onto nonconductive surfaces.These nonconductive surfaces include plastics, ceramics, and glass etc., which can then become decorative, anti-corrosive, and conductive depending o...
1
Applied and Interdisciplinary Chemistry
hMeRIP-seq is an immunoprecipitation method, in which RNA–protein complexes are crosslinked for stability, and antibodies specific to hm5C are added. Using this method, over 3,000 hm5C peaks have been called in Drosophila melanogaster S2 cells.
1
Applied and Interdisciplinary Chemistry
Polyamorphism has also been observed in organic compounds, such as liquid triphenyl phosphite at temperatures between 210 K and 226 K and n-butanol at temperatures between 120 K and 140 K. Polyamorphism is also an important area in pharmaceutical science. The amorphous form of a drug typically has much better aqueous ...
0
Theoretical and Fundamental Chemistry
A biomaterial should perform its intended function within the living body without negatively affecting other bodily tissues and organs. In order to prevent unwanted organ and tissue interactions, biomaterials should be non-toxic. The toxicity of a biomaterial refers to the substances that are emitted from the biomateri...
1
Applied and Interdisciplinary Chemistry
A simple method for finding the particular integral for in two dimensions was devised by Isao Imai and Ernst Lamla. In two dimensions, the problem can be handled using complex analysis by introducing the complex potential formally regarded as the function of and its conjugate ; here is the stream function, defined ...
1
Applied and Interdisciplinary Chemistry
An enzyme inhibitor is characterised by its dissociation constant K, the concentration at which the inhibitor half occupies the enzyme. In non-competitive inhibition the inhibitor can also bind to the enzyme-substrate complex, and the presence of bound substrate can change the affinity of the inhibitor for the enzyme, ...
1
Applied and Interdisciplinary Chemistry
Oxidative stress is suspected to be important in neurodegenerative diseases including Lou Gehrigs disease (aka MND or ALS), Parkinsons disease, Alzheimers disease, Huntingtons disease, depression, and multiple sclerosis. It is also indicated in Neurodevelopmental conditions such as Autism Spectrum Disorder. Indirect ev...
1
Applied and Interdisciplinary Chemistry
In physics, the phase problem is the problem of loss of information concerning the phase that can occur when making a physical measurement. The name comes from the field of X-ray crystallography, where the phase problem has to be solved for the determination of a structure from diffraction data. The phase problem is al...
0
Theoretical and Fundamental Chemistry
Thure Cerling and James Ehleringer, a biology professor at the University of Utah, founded Isoforensics in 2003, a company with the aim of interpreting the stable isotope composition of various biological and synthetic materials. This was the first step for the discovery they made which was first published on February ...
0
Theoretical and Fundamental Chemistry
Nucleotides are initially made with ribose as the sugar component, which is a feature of RNA. DNA, however, requires deoxyribose, which is missing the 2'-hydroxyl (-OH group) on the ribose. The reaction to remove this -OH is catalyzed by ribonucleotide reductase. This enzyme converts NDPs (ucleoside-ihosphate) to dNDPs...
1
Applied and Interdisciplinary Chemistry
Sterlite Industries ("Sterlite"), a subsidiary of Vedanta Resources, built a copper smelter in Tuticorin using an ISASMELT furnace and Peirce-Smith converters. The smelter was commissioned in 1996 and was designed to produce 60,000 t/y of copper (450,000 t/y of copper concentrate), but by increasing the oxygen content ...
1
Applied and Interdisciplinary Chemistry
The Woodward–Hoffmann rules can also explain bimolecular cycloaddition reactions through correlation diagrams. A [p + q] cycloaddition brings together two components, one with p π-electrons, and the other with q π-electrons. Cycloaddition reactions are further characterized as suprafacial (s) or antarafacial (a) with...
0
Theoretical and Fundamental Chemistry