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Another form of plant communication occurs through their root networks. Through roots, plants can share many different resources including carbon, nitrogen, and other nutrients. This transfer of below ground carbon is examined in Philip et al. 2011. The goals of this paper were to test if carbon transfer was bi-directi... | 1 | Biochemistry |
James Beaumont Neilson, previously foreman at Glasgow gas works, invented the system of preheating the blast for a furnace. He found that by increasing the temperature of the incoming air to 300 degrees Fahrenheit, he could reduce the fuel consumption from 8.06 tons of coal to 5.16 tons of coal per ton of produced iro... | 8 | Metallurgy |
Taste is a form of chemoreception that takes place in the specialised taste receptors, contained in structures called taste buds in the mouth. Taste buds are mainly on the upper surface (dorsum) of the tongue. The function of taste perception is vital to help prevent harmful or rotten foods from being consumed. There a... | 1 | Biochemistry |
There are different ways to derive the summation theorems. One is analytical and rigorous using a combination of linear algebra and calculus. The other is less rigorous, but more operational and intuitive. The latter derivation is shown here.
Consider the two-step pathway:
where and are fixed species so that the syst... | 1 | Biochemistry |
In physics, zilch (or zilches) is a set of ten conserved quantities of the source-free electromagnetic field, which were discovered by Daniel M. Lipkin in 1964. The name refers to the fact that the zilches are only conserved in regions free of electric charge, and therefore have limited physical significance. One of th... | 4 | Stereochemistry |
Adverse effects are similar to oxcarbazepine. The most common ones (more than 10% of patients) are tiredness and dizziness. Other fairly common side effects (1 to 10%) include impaired coordination, gastrointestinal disorders such as diarrhoea, nausea and vomiting, rash (1.1%), and hyponatremia (low sodium blood levels... | 4 | Stereochemistry |
Adhesive strength depends also on the size and macroscopic shape of adhesive contact. When a rigid punch with a flat but oddly shaped face is carefully pulled off its soft counterpart, the detachment does not occur instantaneously. Instead, detachment fronts start at pointed corners and travel inwards until the final c... | 6 | Supramolecular Chemistry |
Titanium and titanium alloys have been wide usage in aerospace, medical, and maritime applications. The most known titanium alloy that adopts solid solution strengthening is Ti-6Al-4V. Also, the addition of oxygen to pure Ti alloy adopts a solid solution strengthening as a mechanism to the material, while adding it to ... | 8 | Metallurgy |
In 1955, S. Winstein and T. G. Traylor published a study of the mechanism of acetolysis of organomercury compounds. They propose a series of possible mechanisms for the process, which they rule out through based on their kinetic data. A concerted metalation deprotonation is considered, and they are unable to rule it ou... | 0 | Organic Chemistry |
a. Fructose is not the only sugar found in fruits. Glucose and sucrose are also found in varying quantities in various fruits, and sometimes exceed the fructose present. For example, 32% of the edible portion of a date is glucose, compared with 24% fructose and 8% sucrose. However, peaches contain more sucrose (6.66%)... | 1 | Biochemistry |
The banteng was the second endangered species to be successfully cloned, and the first clone to survive beyond infancy. Scientists at Advanced Cell Technology in Worcester, Massachusetts, extracted DNA from skin cells of a dead male banteng, that were preserved in San Diego 's Frozen Zoo facility, and transferred it in... | 1 | Biochemistry |
The reagent is typically provided in two parts:
* A mixture of 2% sodium nitroprusside and 2% acetaldehyde in water (solution A)
* A solution of 2% sodium carbonate in water (solution B)
Separate storage of the aldehyde and base are necessary to prevent aldol polymerisation of the aldehyde.
When exposed to an amine, r... | 3 | Analytical Chemistry |
For the calculation strategy of CASTp, alpha-shape and discrete-flow methods are applied to the protein binding site, also the measurement of pocket size by the program of CAST by Liang et al. in 1998, then updated by Tian et al. in 2018. Firstly, CAST identifies atoms which form the protein pocket, then calculates the... | 1 | Biochemistry |
; (1999 April);
Its an impressive memento which described the fascinating story of how his national team – Sri Lanka – blossomed out and established itself as International Champions of 1996/97 in Overs-limited cricket'. Perera has also captured here the brilliance, the philosophy and the pulsating drama of one-day in... | 3 | Analytical Chemistry |
Hydrogen-reduced iron is used as a source of food-grade iron powder, for food fortification and for oxygen scavenging. This elemental form is not absorbed as well as ferrous forms, but the oxygen-scavenging function keeps it attractive. Purity standards for this use are established in 1977. | 8 | Metallurgy |
Caesium carbonate facilitates the N-alkylation of compounds such as sulfonamides, amines, β-lactams, indoles, heterocyclic compounds, N-substituted aromatic imides, phthalimides, and other similar compounds. Research on these compounds has focused on their synthesis and biological activity. In the presence of sodium te... | 0 | Organic Chemistry |
Transition metal porphyrin complexes are a family of coordination complexes of the conjugate base of porphyrins. Iron porphyrin complexes occur widely in Nature, which has stimulated extensive studies on related synthetic complexes. The metal-porphyrin interaction is a strong one such that metalloporphyrins are therm... | 1 | Biochemistry |
Lyngbyastatins 1 and 3 are encoded for by a 52 kb biosynthetic gene cluster (BGC) containing one polyketide synthase (PKS)/non-ribosomal peptide synthetase (NRPS) hybrid (LbnA), four NRPSs (LbnB-D, LbnF), and one PKS (LbnE).
Biosynthesis commences with PKS activity — thiolation of propanoic (Lyngbyastatin 1) or butyri... | 1 | Biochemistry |
McQuillan was awarded the Rosenhain Medal in 1965. She was on the Interservices Metallurgical Research Council until 1989 and in 1967 served as vice-president of the Institute of Metals. In 1968 she was fundamental to the First International Conference on Titanium in London. | 8 | Metallurgy |
These photosystems are light-driven redox centers, each consisting of an antenna complex that uses chlorophylls and accessory photosynthetic pigments such as carotenoids and phycobiliproteins to harvest light at a variety of wavelengths. Each antenna complex has between 250 and 400 pigment molecules and the energy they... | 5 | Photochemistry |
For organic compounds, the length of the C-O bond does not vary widely from 120 picometers. Inorganic carbonyls have shorter C-O distances: CO, 113; CO, 116; and COCl, 116 pm.
The carbonyl carbon is typically electrophilic. A qualitative order of electrophilicity is RCHO (aldehydes) > RCO (ketones) > RCOR' (esters) > ... | 0 | Organic Chemistry |
CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) is a genetic engineering technique that allows for precise editing of the genome. One application of CRISPR is gene knockout, which involves disabling or "knocking out" a specific gene in an organism.
The process of gene knockout with CRISPR involves th... | 1 | Biochemistry |
Although there are numerous benefits in using the SQT approach, drawbacks in its use have been identified. The major limitations include: lack of statistical criteria development within the framework, large database requirements, difficulties in chemical mixture application, and data interpretation can be laboratory in... | 2 | Environmental Chemistry |
Specim, Spectral Imaging Ltd is a European technology firm headquartered in Oulu, Finland. Specim manufactures and sells imaging spectrographs, hyperspectral cameras and systems. Specim's airborne AISA hyperspectral cameras have been utilized for example in monitoring the environmental effects of major industrial catas... | 7 | Physical Chemistry |
Commonly, isocyanides are synthesized by dehydration of formamides. The formamide can be dehydrated with toluenesulfonyl chloride, phosphorus oxychloride, phosgene, diphosgene, or the Burgess reagent in the presence of a base such as pyridine or triethylamine.
The formamide precursors are, in turn, prepared from amines... | 0 | Organic Chemistry |
Super-resolution optical fluctuation imaging (SOFI) is a super-resolution technique that achieves spatial resolutions below the diffraction limit by post-processing analysis with correlation equations, similar to FCS. While original reports of SOFI used fluctuations from stationary, blinking of fluorophores, FCS has be... | 7 | Physical Chemistry |
Rowley led the Peoples National Movement in the September 2015 general election, in which his party secured 23 out of 41 seats in the House of Representatives to form the government, defeating the previous Peoples Partnership coalition government. On 9 September 2015, Rowley was sworn in as Prime Minister of Trinidad a... | 9 | Geochemistry |
The extraction is performed in water with the addition of potassium hydroxide (KOH), sequestering agents, and hydrotropic surfactants. Heat is used to increase the solubility of humic acids and hence more potassium humate can be extracted. The resulting liquid is dried to produce the amorphous crystalline like product... | 9 | Geochemistry |
Isobornyl acetate is an organic compound consisting of the acetate ester or the terpenoid isoborneol. It is a colorless liquid with a pleasant pine-like scent, and it is produced on a multi-ton scale for this purpose. The compound is prepared by reaction of camphene with acetic acid in the presence of a strongly acid... | 0 | Organic Chemistry |
Various kits have a 93 to 95% sensitivity (true positive rate). For hospitalized patients, one study found the specificity to be about 50% (related to false positive rate) in the diagnosis of thrombotic disease.
* False positive readings can be due to various causes: liver disease, high rheumatoid factor, inflammation,... | 1 | Biochemistry |
In molecular biology, the Ycf4 protein is involved in the assembly of the photosystem I complex which is part of an energy-harvesting process named photosynthesis. Without Ycf4, photosynthesis would be inefficient affecting plant growth. Ycf4 is located in the thylakoid membrane of the chloroplast. Ycf4 is important fo... | 5 | Photochemistry |
Sintering and hot isostatic pressing are processing techniques used to densify materials from a loosely packed "green body" into a solid object with physically merged grains. Sintering occurs below the melting point, and causes adjacent particles to merge at their boundaries, creating a strong bond between them. In hot... | 8 | Metallurgy |
The vulcanization of rubber results in crosslinking groups which consist of disulfide (and polysulfide) bonds; in analogy to the role of disulfides in proteins, the S−S linkages in rubber strongly affect the stability and rheology of the material. Although the exact mechanism underlying the vulcanization process is not... | 0 | Organic Chemistry |
The Society has hosted scientific technical meetings since 1902 including its biannual meetings in the spring and fall of each year. The ECS biannual meetings bring together the most active researchers in academia, government, and industry—both professionals and students—to engage, discuss, and innovate in the areas of... | 7 | Physical Chemistry |
Photosystem II is damaged by light irrespective of light intensity. The quantum yield of the damaging reaction in typical leaves of higher plants exposed to visible light, as well as in isolated thylakoid membrane preparations, is in the range of 10 to 10 and independent of the intensity of light. This means that one P... | 5 | Photochemistry |
Mill scale is a complex oxide that contains around 70% iron with traces of nonferrous metals and alkaline compounds. Reduced iron powder may be obtained by conversion of mill scale into a single highest oxide i.e. hematite () followed by reduction with hydrogen. Shahid and Choi reported the reverse co-precipitation met... | 8 | Metallurgy |
Blood based protein biomarkers are often used as a diagnostic test that usually monitor one or more protein that are indicative of the presence of disease or disorder or the presence of a disease/disorder subphtnotype. Such a Blood based protein biomarker-based test can aoften be used Bas prognosticator of disease ou... | 1 | Biochemistry |
Stress corrosion cracking (SCC) happens when a stressed material is in a corrosive (chemically destructive) environment. One example of SSC embrittlement is when moisture increases static fatigue effects in glass. SCC is also seen in hydrogen embrittlement, embrittlement of some polymers, and more. | 8 | Metallurgy |
The types of spectroscopy also can be distinguished by the nature of the interaction between the energy and the material. These interactions include:
* Absorption spectroscopy: Absorption occurs when energy from the radiative source is absorbed by the material. Absorption is often determined by measuring the fraction o... | 7 | Physical Chemistry |
Thermodynamicists use this factor (Z) to alter the ideal gas equation to account for compressibility effects of real gases. This factor represents the ratio of actual to ideal specific volumes. It is sometimes referred to as a "fudge-factor" or correction to expand the useful range of the ideal gas law for design purpo... | 7 | Physical Chemistry |
A mixture of bromo acetal 1 (549 mg, 1.78 mmol), AIBN (30.3 mg, 0.185 mmol), and BuSnH (0.65 mL, 2.42 mmol) in dry benzene (12 mL) was heated under reflux for 1 hour and then evaporated under reduced pressure. Silicagel column chromatography of the crude product with hexane–EtOAc (92:8) as eluant gave tetrahydropyran 2... | 0 | Organic Chemistry |
IPA can be converted in the liver or kidneys to 3-indoleacrylic acid, which is subsequently conjugated with glycine, forming indolylacryloyl glycine. | 1 | Biochemistry |
The discovery that a hormone can influence phosphoinositide metabolism was made by Mabel R. Hokin (1924–2003) and her husband Lowell E. Hokin in 1953, when they discovered that radioactive P phosphate was incorporated into the phosphatidylinositol of pancreas slices when stimulated with acetylcholine. Up until then pho... | 1 | Biochemistry |
Mass spectrometry (MS) can identify proteins and their relative levels, hence it can be used to study protein expression. When used in combination with affinity purification, mass spectrometry (AP/MS) can be used to study protein complexes, that is, which proteins interact with one another in complexes and in which rat... | 1 | Biochemistry |
The embryo transfer procedure starts by placing a speculum in the vagina to visualize the cervix, which is cleansed with saline solution or culture media. A transfer catheter is loaded with the embryos and handed to the clinician after confirmation of the patient's identity. The catheter is inserted through the cervic... | 1 | Biochemistry |
The parent compound can be prepared by heating urea at 150 °C for ~6 hours until it gets slightly cloudy, then recrystallizing from water. After that, it can be recrystallized repeatedly from 2% sodium hydroxide solution and water to finally get base-free crystalline needles of the monohydrate which are free of cyanuri... | 0 | Organic Chemistry |
* Platyhelminthes (flatworms) and Nematoda (roundworms).
Code 14 differs from code 9 (the echinoderm and flatworm mitochondrial code) only by translating UAA to Tyr rather than STOP. A study in 2000 has found no evidence that the codon UAA codes for Tyr in the flatworms but other opinions exist. There are very few Ge... | 1 | Biochemistry |
Malonyl-CoA is formed in the first step of mitochondrial fatty acid synthesis (mtFASII) from malonic acid by malonyl-CoA synthetase (ACSF3). | 1 | Biochemistry |
The Lauritzen–Hoffman plot (right) models the three different regimes when (logG) + U*/k(T-T) is plotted against (TΔT). It can be used to describe the rate at which secondary nucleation competes with lateral addition at the growth front among the different temperatures. This theory can be used to help understand the pr... | 7 | Physical Chemistry |
Areteia Therapeutics is currently conducting three global Phase III clinical trials of dexpramipexole in eosinophil-associated asthma as listed below.
EXHALE-2: a global Phase III clinical trial to evaluate the efficacy and safety of dexpramipexole as an add-on oral therapy in participants with inadequately controlled ... | 4 | Stereochemistry |
EosFP is a photoactivatable green to red fluorescent protein. Its green fluorescence (516 nm) switches to red (581 nm) upon UV irradiation of ~390 nm (violet/blue light) due to a photo-induced modification resulting from a break in the peptide backbone near the chromophore. Eos was first discovered as a tetrameric prot... | 1 | Biochemistry |
As depicted in the five photographs below, Dr. Perera perhaps became the first disabled person in Sri Lanka to be recognised in Sri Lanka for his outstanding voluntary contributions to the community – to the promotion and establishment of Accessibility to the Built environment, enhancing safety and social inclusion wit... | 3 | Analytical 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... | 7 | Physical Chemistry |
Carbon compounds can be distinguished as either organic or inorganic, and dissolved or particulate, depending on their composition. Organic carbon forms the backbone of key component of organic compounds such as – proteins, lipids, carbohydrates, and nucleic acids. Inorganic carbon is found primarily in simple compound... | 9 | Geochemistry |
Ionophores are widely used in cell physiology experiments and biotechnology as these compounds can effectively perturb gradients of ions across biological membranes and thus they can modulate or enhance the role of key ions in the cell. Many ionophores have shown antibacterial and antifungal activities. Some of them al... | 7 | Physical Chemistry |
Moureu was widely respected for his research work. As part of his research on acrylic acid and its derivatives, he was the first to synthesize acrylonitrile in 1893.
In addition, he studied acetylene compounds, phenolic compounds, plant essences, and rare gases found in wells and mines.
During the war, Moureu researche... | 0 | Organic Chemistry |
Embryo transfer techniques allow top quality female livestock to have a greater influence on the genetic advancement of a herd or flock in much the same way that artificial insemination has allowed greater use of superior sires. ET also allows the continued use of animals such as competition mares to continue training ... | 1 | Biochemistry |
Gay-Lussac's law states that:
Therefore,
* , or
* , or
:where P is the pressure, T is the absolute temperature, and k is another proportionality constant. | 7 | Physical Chemistry |
In 1848, Louis Pasteur became the first scientist to discover chirality and enantiomers while he was working with tartaric acid. During the experiments, he noticed that there were two crystal structures produced but these structures looked to be non-superimposable mirror images of each other; this observation of isomer... | 4 | Stereochemistry |
Initiation of translation in bacteria involves the assembly of the components of the translation system, which are: the two ribosomal subunits (50S and 30S subunits); the mature mRNA to be translated; the tRNA charged with N-formylmethionine (the first amino acid in the nascent peptide); guanosine triphosphate (GTP) as... | 1 | Biochemistry |
A system with three components is called a ternary system. At constant pressure the maximum number of independent variables is three – the temperature and two concentration values. For a representation of ternary equilibria a three-dimensional phase diagram is required. Often such a diagram is drawn with the compositio... | 7 | Physical Chemistry |
Some capillary techniques provide also a chamber like arrangement, however, there is no filter between the cells and the test substance. Quantitative results are gained by the multiwell type of this probe using 4-8-12-channel pipettes. Accuracy of the pipette and increased number of the parallel running samples is the ... | 1 | Biochemistry |
Direct ammonia fuel cells are researched for this exact reason and new studies presented a new integrated solar-based ammonia synthesis and fuel cell. The solar base follows from excess solar power that is used to synthesize ammonia. This is done by using an ammonia electrolytic cell (AEC) in combination with a proton ... | 5 | Photochemistry |
Oxazolidinones can be prepared from amino acids or readily available amino alcohols. A large number of oxazolidinones are commercially available, including the four below.
Acylation of the oxazolidinone is achieved by deprotonation with n-butyllithium and quench with an acyl chloride. | 4 | Stereochemistry |
Chirality-induced spin selectivity (CISS) refers to multiple phenomena where handedness of a chiral chemical compound influences the spin of transmitted or emitted electrons.
Experiments were able to demonstrate the effect in the form of polarization of electrons scattered from chiral molecules, spin-dependent transmis... | 4 | Stereochemistry |
RNA-protein interactions have been investigated through a three-hybrid variation of the two-hybrid technique. In this case, a hybrid RNA molecule serves to adjoin together the two protein fusion domains—which are not intended to interact with each other but rather the intermediary RNA molecule (through their RNA-bindin... | 1 | Biochemistry |
In biological nitrification, the oxidation of to hydroxylamine is mediated by the ammonia monooxygenase (AMO). Hydroxylamine oxidoreductase (HAO) further oxidizes hydroxylamine to nitrite.
Cytochrome P460, an enzyme found in the ammonia-oxidizing bacteria Nitrosomonas europea, can convert hydroxylamine to nitrous oxid... | 0 | Organic Chemistry |
In organic chemistry, transamidification is the process of exchanging the subunits of a peptide, amide or ester compound with another amine or fatty acid to produce a new amide or peptide. The process has been used for the production of emulsifiers and dispersing agents and oil drilling fluids. | 0 | Organic Chemistry |
As many as 20% of human tumors are caused by viruses. Some such viruses that are commonly recognized include HPV, T-cell Leukemia virus type I, and hepatitis B.
Viral oncogenesis are most common with DNA and RNA tumor viruses, most frequently the retroviruses. There are two types of oncogenic retroviruses: acute trans... | 1 | Biochemistry |
In order to study its potential as a cancer therapy target, Globo H has been synthesized in the laboratory. One synthesis is achieved by first building two trisaccharides from their component sugars, and then linking them. The trisaccharides, with most of their functional groups protected to prevent side reactions, are... | 1 | Biochemistry |
Inhalation of chloromethane gas produces central nervous system effects similar to alcohol intoxication. The TLV is 50 ppm and the MAC is the same. Prolonged exposure may have mutagenic effects. | 2 | Environmental Chemistry |
Philip Joseph Kocienski (born 23 December 1946) is a British organic chemist. He is an Emeritus Professor at the University of Leeds. | 0 | Organic Chemistry |
Transient liquid phase diffusion bonding (TLPDB) is a joining process that has been applied for bonding many metallic and ceramic systems which cannot be bonded by conventional fusion welding techniques. The bonding process produces joints with a uniform composition profile, tolerant of surface oxides and geometrical d... | 8 | Metallurgy |
The process of binding is central in determining the "strength" of promoters, that is the relative estimation of how "well" a promoter perform the expression of a gene under specific circumstances. Brewster et al., using a simple thermodynamical model based on the postulate that transcriptional activity is proportional... | 1 | Biochemistry |
Cavity ring-down spectroscopy (CRDS) is a highly sensitive optical spectroscopic technique that enables measurement of absolute optical extinction by samples that scatter and absorb light. It has been widely used to study gaseous samples which absorb light at specific wavelengths, and in turn to determine mole fraction... | 7 | Physical Chemistry |
In prehistory gold could be found in several areas of Europe; the Carpathian region, Iberia, south-western France, Brittany, Britain and Ireland. The latter in particular had rich gold reserves, and as such has been labelled an "ancient El Dorado". Across the world, and in many cultures, gold has been highly valued as ... | 8 | Metallurgy |
Immunogold labeling was first used in 1971 by Faulk and Taylor to identify Salmonella antigens. It was first applied in transmission electron microscopy (TEM) and was especially useful in highlighting proteins found in low densities, such as some cell surface antigens. As the resolution of scanning electron microscopy ... | 1 | Biochemistry |
Andrée Marquet (born 1934), is a French chemist specializing in organic chemistry and chemical biology, professor emeritus at the Pierre and Marie Curie University and correspondent at the French Academy of sciences since 1993. | 0 | Organic Chemistry |
*Quillin, M. L., Arduini, R. M., Olson, J. S., & Phillips Jr, G. N. (1993). High-resolution crystal structures of distal histidine mutants of sperm whale myoglobin. Journal of molecular biology, 234(1), 140–155.
*Springer, B. A., Sligar, S. G., Olson, J. S., & Phillips, G. N. J. (1994). Mechanisms of ligand recognition... | 1 | Biochemistry |
IVF success rates are the percentage of all IVF procedures that result in favourable outcomes. Depending on the type of calculation used, this outcome may represent the number of confirmed pregnancies, called the pregnancy rate, or the number of live births, called the live birth rate. Due to advances in reproductive t... | 1 | Biochemistry |
* Sadideen H, Swaminathan R. (2006): "Macroprolactin: what is it and what is its importance?" Int J Clin Pract. 60(4):457-61. | 1 | Biochemistry |
John Michael Ramsey is an American analytical chemist at the University of North Carolina at Chapel Hill. He currently holds the position of Minnie N. Goldby Distinguished Professor of Chemistry. His current research with the university focuses on microscale and nanoscale devices such as microchip electrospray, microsc... | 3 | Analytical Chemistry |
Both enantiomers of pseudoephedrine are commercially available. Racemic pseudoephedrine has many medical uses. Because pseudoephedrine can be used to illegally make methamphetamine, the purchase of pseudoephedrine for use in academic or industrial research is rather regulated. As an alternative, Myers et al. reported ... | 4 | Stereochemistry |
The choice of working fluids is known to have a significant impact on the thermodynamic as well as economic performance of the cycle. A suitable fluid must exhibit favorable physical, chemical, environmental, safety and economic properties such as low specific volume (high density), viscosity, toxicity, flammability, o... | 7 | Physical Chemistry |
The Gallic acid reagent is used as a simple spot-test to presumptively identify drug precursor chemicals. It is composed of a mixture of gallic acid and concentrated sulfuric acid.
0.05 g of gallic acid is used for every 10 mls of sulfuric acid. The same ratio of gallic acid n-propyl ester in sulfuric acid can also be ... | 3 | Analytical Chemistry |
Genome-wide association studies (GWAS) identify linkages between alleles and observable traits such as phenotypes and diseases. Most of the associations are between single-nucleotide polymorphisms (SNPs) and the trait being examined and most of these SNPs are located in non-functional DNA. The association establishes a... | 1 | Biochemistry |
Locascio is an interdisciplinary researcher. She worked at NIST for 31 years, rising from a research biomedical engineer to eventually leading the agencys material measurement laboratory. Locascio also served as the acting associate director for laboratory programs, the number two position at NIST, providing direction ... | 3 | Analytical Chemistry |
CRP concentrations between 2 and 10 mg/L are considered as metabolic inflammation: metabolic pathways that cause arteriosclerosis and type II diabetes mellitus | 1 | Biochemistry |
Superelectrophiles are defined as cationic electrophilic reagents with greatly enhanced reactivities in the presence of superacids. These compounds were first described by George A. Olah. Superelectrophiles form as a doubly electron deficient superelectrophile by protosolvation of a cationic electrophile. As observed b... | 7 | Physical Chemistry |
Porphyrin complexes consist of a square planar MN core. The periphery of the porphyrins, consisting of sp-hybridized carbons, generally display small deviations from planarity. "Ruffled" or saddle-shaped porphyrins is attributed to interactions of the system with its environment. Additionally, the metal is often not... | 1 | Biochemistry |
Some bacteria such as enteropathogenic E. coli and enterohemorrhagic E. coli can induce membrane ruffling by secreting toxins via the type three secretion system and modifying the host cytoskeleton. Such toxins include EspT, Map, and SopE, which mimic RhoGEF and activate endogenous Rho GTPases to manipulate actin polym... | 1 | Biochemistry |
Transcription factor 7-like 2 (T-cell specific, HMG-box), also known as TCF7L2 or TCF4, is a protein acting as a transcription factor that, in humans, is encoded by the TCF7L2 gene. The TCF7L2 gene is located on chromosome 10q25.2–q25.3, contains 19 exons. As a member of the TCF family, TCF7L2 can form a bipartite tran... | 1 | Biochemistry |
Alternative means of assimilating iron are surface reduction, lowering of pH, utilization of heme, or extraction of protein-complexed metal. Recent data suggest that iron-chelating molecules with similar properties to siderophores, were produced by marine bacteria under phosphate limiting growth condition. In nature ph... | 1 | Biochemistry |
Monoallelic gene expression (MAE) is the phenomenon of the gene expression, when only one of the two gene copies (alleles) is actively expressed (transcribed), while the other is silent. Diploid organisms bear two homologous copies of each chromosome (one from each parent), a gene can be expressed from both chromosomes... | 1 | Biochemistry |
Vacuum fusion is an analytical chemistry technique, used for determining the oxygen, hydrogen, and sometimes nitrogen content of metals. While ineffective when used on alkali or earth metals, vacuum fusion remains a viable means when applied to almost all other metals. | 3 | Analytical Chemistry |
Amides are usually prepared by coupling a carboxylic acid with an amine. The direct reaction generally requires high temperatures to drive off the water:
Esters are far superior substrates relative to carboxylic acids.
Further "activating" both acid chlorides (Schotten-Baumann reaction) and anhydrides (Lumière–Barbier ... | 0 | Organic Chemistry |
The expression host of choice for the expression of many proteins is Escherichia coli as the production of heterologous protein in E. coli is relatively simple and convenient, as well as being rapid and cheap. A large number of E. coli expression plasmids are also available for a wide variety of needs. Other bacteria u... | 1 | Biochemistry |
Transcription attenuation is a type of prokaryotic regulation that happens only under certain conditions. This process occurs at the beginning of RNA transcription and causes the RNA chain to terminate before gene expression. Transcription attenuation is caused by the incorrect formation of a nascent RNA chain. This na... | 1 | Biochemistry |
The LH 2 is usually bound to photosystem II, but it can undock and bind PS I instead depending on light conditions. This behavior is controlled by reversible phosphorylation. This reaction represents a system for balancing the excitation energy between the two photosystems. | 5 | Photochemistry |
Mass spectrometric immunoassay (MSIA) is a rapid method is used to detect and/ or quantify antigens and or antibody analytes. This method uses an analyte affinity (either through antigens or antibodies) isolation to extract targeted molecules and internal standards from biological fluid in preparation for matrix assis... | 1 | Biochemistry |
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