text stringlengths 105 4.44k | label int64 0 9 | label_text stringclasses 10
values |
|---|---|---|
Following the total synthesis of bottromycin, Kobayashi and colleagues synthesized a series of bottromycin derivatives and evaluated their anti-MRSA and anti-VRE activity. Only derivatives of the methyl ester moiety were explored, as they found that the methyl ester was both important for antibacterial activity and uns... | 0 | Organic Chemistry |
One of the first DREADDs was based on the human M muscarinic receptor (hM). Only two point mutations of hM were required to achieve a mutant receptor with nanomolar potency for CNO, insensitivity to acetylcholine and low constitutive activity and this DREADD receptor was named hM3Dq. M and M muscarinic receptors have b... | 1 | Biochemistry |
Alloenzymes (or also called allozymes) are variant forms of an enzyme which differ structurally but not functionally from other allozymes coded for by different alleles at the same locus. These are opposed to isozymes, which are enzymes that perform the same function, but which are coded by genes located at different l... | 1 | Biochemistry |
Artifact replication plays an important role in comparing artifact use. Often objects are made not just to prove a manufacturing process or to sit in a display case, but to show that a given object will show signs of wear that are similar to those present in the archaeological record. Roberts and Ottaway conducted such... | 8 | Metallurgy |
For a normal crystalline ice far below its melting point, there will be some relaxation of the atoms near the surface. Simulations of ice near to its melting point show that there is significant melting of the surface layers rather than a symmetric relaxation of atom positions. Nuclear magnetic resonance provided evide... | 7 | Physical Chemistry |
David Eusthatios Manolopoulos (born 14 December 1961) is a Professor of Theoretical Chemistry at University of Oxford. His research focuses on the computational modeling of the dynamics of elementary chemical reactions in the gas phase and quantum mechanical effects in chemical dynamics. His research highlights include... | 7 | Physical Chemistry |
;Myoglobin: Found in the muscle tissue of many vertebrates, including humans, it gives muscle tissue a distinct red or dark gray color. It is very similar to hemoglobin in structure and sequence, but is not a tetramer; instead, it is a monomer that lacks cooperative binding. It is used to store oxygen rather than trans... | 7 | Physical Chemistry |
Sidney Gilchrist Thomas, a Londoner with a Welsh father, was an industrial chemist who decided to tackle the problem of phosphorus in iron, which resulted in the production of low grade steel. Believing that he had discovered a solution, he contacted his cousin, Percy Gilchrist, who was a chemist at the Blaenavon Ironw... | 8 | Metallurgy |
PKM2 is a cytosolic enzyme that is associated with other glycolytic enzymes, i.e., hexokinase, glyceraldehyde 3-P dehydrogenase, phosphoglycerate kinase, phosphoglyceromutase, enolase, and lactate dehydrogenase within a so-called glycolytic enzyme complex.
However, PKM2 contains an inducible nuclear localization signal... | 1 | Biochemistry |
A test is done by taking a small scraping from a pill and placing it in the reagent testing liquid or dropping the reagent onto the scraping. The liquid will change colour when reacting with different chemicals to indicate the presence of certain substances.
Testing with a reagent kit does not indicate the pill is safe... | 3 | Analytical Chemistry |
Production of CPs for industrial use started in the 1930s, with global production in 2000 being about 2 million tonnes. Currently, over 200 CP formulations are in use for a wide range of industrial applications, such as flame retardants and plasticisers, as additives in metal working fluids, in sealants, paints, adhesi... | 2 | Environmental Chemistry |
Pertactin adheres to only ciliated epithelial cells of B. bronchiseptica in vivo. However, in vitro, PRN does not adhere to either. PRN does however help provide resistance towards a hyperinflammatory response of innate immunity for B. bronchiseptica. With respect to the adaptive immunity, studies show that PRN plays a... | 1 | Biochemistry |
The collision/reaction cell is used to remove interfering ions through ion/neutral reactions. Collision/reaction cells are known under several names. The dynamic reaction cell is located before the quadrupole in the ICP-MS device. The chamber has a quadrupole and can be filled with reaction (or collision) gases (ammoni... | 3 | Analytical Chemistry |
Diel vertically migrating krill, salps, smaller zooplankton and fish can actively transport carbon to depth by consuming POC in the surface layer at night, and metabolising it at their daytime, mesopelagic residence depths. Depending on species life history, active transport may occur on a seasonal basis as well.
Witho... | 9 | Geochemistry |
The difference between reversible and irreversible events has particular explanatory value in complex systems (such as living organisms, or ecosystems). According to the biologists Humberto Maturana and Francisco Varela, living organisms are characterized by autopoiesis, which enables their continued existence. More pr... | 7 | Physical Chemistry |
Modafinil was considered for the treatment of ADHD because of its lower abuse potential than conventional psychostimulants like methylphenidate and amphetamines. In 2008, an application to market modafinil for pediatric ADHD was submitted to the Food and Drug Administration in the US.
However, evidence of modafinil for... | 4 | Stereochemistry |
Studies published in 1992 and 1997 indicate that the level of aerobic fitness of an individual does not have any correlation with the level of resting metabolism. Both studies find that aerobic fitness levels do not improve the predictive power of fat free mass for resting metabolic rate.
However, recent research from ... | 1 | Biochemistry |
Anti-double stranded DNA (anti-dsDNA) antibodies are highly associated with SLE. They are a very specific marker for the disease, with some studies quoting nearly 100%. Data on sensitivity ranges from 25 to 85%. Anti-dsDNA antibody levels, known as titres, correlate with disease activity in SLE; high levels indicate mo... | 1 | Biochemistry |
Construction of a 15 t/h demonstration copper ISASMELT plant began in 1986. The design was based on MIM's 250 kg/h test work and operating experience with the lead ISASMELT pilot plant. It cost A$11 million and was commissioned in April 1987. The initial capital cost was recovered in the first 14 months of operation.
A... | 8 | Metallurgy |
*CUT&RUN sequencing, antibody-targeted controlled cleavage by micrococcal nuclease for transcriptomic profiling.
*Hydrolysis of nucleic acids in crude cell-free extracts.
*Sequencing of RNA.
*Preparation of rabbit reticulocyte lysates.
*Studies of chromatin structure.
*Removal of nucleic acids from laboratory protein p... | 1 | Biochemistry |
Levetiracetam has not been found to be useful for treatment of neuropathic pain, nor for treatment of essential tremors. Levetiracetam has not been found to be useful for treating all developmental disorders within the autism spectrum; studies have only proven to be an effective treatment for partial, myoclonic, or to... | 4 | Stereochemistry |
In 1878 Josiah Willard Gibbs proposed that a droplet or crystal will arrange itself such that its surface Gibbs free energy is minimized by assuming a shape of low surface energy. He defined the quantity
Here represents the surface (Gibbs free) energy per unit area of the th crystal face and is the area of said face.... | 7 | Physical Chemistry |
Examples of studies involving putative genes include the discovery of 30 putative receptor genes found in rat vomeronasal organ (VNO) and the identification of 79 putative TATA boxes found in many plant genomes. | 1 | Biochemistry |
Medications that contain more than 10% pseudoephedrine are prohibited under the Stimulants Control Law in Japan. | 4 | Stereochemistry |
The detected hemolithin protein was reported to have been found inside two CV3 meteorites Allende and Acfer 086. Acfer-086, where the complete molecule was detected rather than fragments (Allende), was discovered in Agemour, Algeria in 1990. | 9 | Geochemistry |
In summary, in order to find a standard curve, one must use varying concentrations of BSA (Bovine Serum Albumin) in order to create a standard curve with concentration plotted on the x-axis and absorbance plotted on the y-axis. Only a narrow concentration of BSA is used (2-10 ug/mL) in order to create an accurate stand... | 3 | Analytical Chemistry |
is the total angular momentum,
is the azimuthal quantum number,
is the spin quantum number, and
is the secondary total angular momentum quantum number.
Which transitions are allowed is based on the hydrogen-like atom. The symbol is used to indicate a forbidden transition.
In hyperfine structure, the total angular... | 7 | Physical Chemistry |
Where a given letter is used in both capital and lower case form (, and , ) the capital letter refers to the macroscopic observable and the lower case letter to the corresponding variable for an individual particle or layer of the material. Greek symbols are used for properties of a single particle.
* – absorption ... | 7 | Physical Chemistry |
Achinewhu married Eunice Achinewhu (nee Eunice Nyema Otto) in 1972 and they have four children.
He is a reverend canon of the Church of Nigeria Anglican Communion. He is a crown of peace, justice of peace, and the national president of Peace Builders Association (Council of Ambassadors for Peace and Unification) | 1 | Biochemistry |
The VSEPR theory also predicts that substitution of a ligand at a central atom by a lone pair of valence electrons leaves the general form of the electron arrangement unchanged with the lone pair now occupying one position. For molecules with five pairs of valence electrons including both bonding pairs and lone pairs, ... | 4 | Stereochemistry |
Volume number density is the number of specified objects per unit volume:
where N is the total number of objects in a volume V.
Here it is assumed that N is large enough that rounding of the count to the nearest integer does not introduce much of an error, however V is chosen to be small enough that the resulting n do... | 3 | Analytical Chemistry |
The three Laves phases are intermetallic compounds composed of CN12 and CN16 polyhedra with AB stoichiometry, commonly seen in binary metal systems like MgZn. Due to the small solubility of AB structures, Laves phases are almost line compounds, though sometimes they can have a wide homogeneity region. | 8 | Metallurgy |
Levocetirizine is an antihistamine. It acts as an inverse agonist that decreases activity at histamine H1 receptors. This in turn prevents the release of other allergy chemicals and increases the blood supply to the area, providing relief from the typical symptoms of hay fever. Levocetirizine, (R)-(-)-cetirizine, is es... | 4 | Stereochemistry |
In the gas phase, a single water molecule has an oxygen atom surrounded by two hydrogens and two lone pairs, and the geometry is simply described as bent without considering the nonbonding lone pairs.
However, in liquid water or in ice, the lone pairs form hydrogen bonds with neighboring water molecules. The most comm... | 4 | Stereochemistry |
A feature of the LHPG technique is its high convection speed in the liquid phase due to Marangoni convection. It is possible to see that it spins very fast. Even when it appears to be standing still, it is in fact spinning fast on its axis. | 3 | Analytical Chemistry |
Photoluminescence excitation (abbreviated PLE) is a specific type of photoluminescence and concerns the interaction between electromagnetic radiation and matter. It is used in spectroscopic measurements where the frequency of the excitation light is varied, and the luminescence is monitored at the typical emission freq... | 7 | Physical Chemistry |
This equipment is a spectroscopic (light gathering) apparatus and corresponding method for rapidly detecting and analyzing analytes in a sample. The sample is irradiated by an excitation source in optical communication with the sample. The excitation source may include, but is not limited to, a laser, a flash lamp, an ... | 1 | Biochemistry |
Warm spraying is a novel modification of high velocity oxy-fuel spraying, in which the temperature of combustion gas is lowered by mixing nitrogen with the combustion gas, thus bringing the process closer to the cold spraying. The resulting gas contains much water vapor, unreacted hydrocarbons and oxygen, and thus is d... | 8 | Metallurgy |
Vertebrate ferritin consists of two or three subunits which are named based on their molecular weight: L "light", H "heavy", and M "middle" subunits. The M subunit has only been reported in bullfrogs. In bacteria and archaea, ferritin consists of one subunit type. H and M subunits of eukaryotic ferritin and all subunit... | 1 | Biochemistry |
Hydrogenography is a combinatorial method based on the observation of optical changes on the metal surface by hydrogen absorption. The method allows the examination of thousands of combinations of alloy samples in a single batch. | 3 | Analytical Chemistry |
The reaction H + Br → 2 HBr proceeds by the following mechanism:
* Initiation
: Br → 2 Br• (thermal) or Br + hν → 2 Br• (photochemical)
: each Br atom is a free radical, indicated by the symbol "•" representing an unpaired electron.
* Propagation (here a cycle of two steps)
: Br• + H → HBr + H•
: H• + Br → HBr + Br•
:... | 7 | Physical Chemistry |
right|thumb|Example and diagram for p3
left|thumb|Cell structure for p3
* Orbifold signature:
* Coxeter notation: [(3,3,3)] or [3]
* Lattice: hexagonal
* Point group: C
* The group p3 has three different rotation centres of order three (120°), but no reflections or glide reflections.
Imagine a tessellation of the plan... | 3 | Analytical Chemistry |
One conducting polymer coating that has shown promising results for improving the performance of neural electrodes is polypyrrole (PPy). Polypyrrole has great biocompatibility and conductive properties, which makes it a good option for the use in neural electrodes. PPy has been shown to have a good interaction with bio... | 7 | Physical Chemistry |
Polanyi described that the “turning point” of the acceptance of his model of adsorption occurred when Fritz Haber asked him to defend his theory in full in the Kaiser Wilhelm Institute for Physical Chemistry in Berlin, Germany. Many key players in the scientific world were present in this meeting including Albert Einst... | 7 | Physical Chemistry |
Mitochondrial diseases are usually detected by analysing muscle samples, where the presence of these organelles is higher. The most common tests for the detection of these diseases are:
# Southern blot to detect large deletions or duplications
# Polymerase chain reaction and specific mutation testing
# Sequencing | 1 | Biochemistry |
* Brazil: Classified as a weapon by Federal Act n° 3665/2000 (Regulation for Fiscalization of Controlled Products). Only law enforcement officers and private security agents with a recognized Less Lethal Weapons training certificate can carry it.
* Colombia: Can be sold without any kind of restriction to anyone older ... | 1 | Biochemistry |
Planned
* EnMAP
Current and Past
*AVIRIS — airborne
*MODIS — on board EOS Terra and Aqua platforms
*MERIS — on board Envisat
*Hyperion — on board Earth Observing-1
*Several commercial manufacturers for laboratory, ground-based, aerial, or industrial imaging spectrographs | 7 | Physical Chemistry |
Chromids are elements that exist at the boundary between a chromosome and a plasmid, found in about 10% of bacterial species sequenced by 2009. These elements carry core genes and have codon usage similar to the chromosome, yet use a plasmid-type replication mechanism such as the low copy number RepABC. As a result, th... | 1 | Biochemistry |
The leaf surface is also host to a large variety of microorganisms; in this context it is referred to as the phyllosphere.
;Lepidote: Covered with fine scurfy scales. | 5 | Photochemistry |
RNA spike-ins are samples of RNA at known concentrations that can be used as gold standards in experimental design and during downstream analyses for absolute quantification and detection of genome-wide effects.
* Absolute quantification: Absolute quantification of gene expression is not possible with most RNA-Seq expe... | 1 | Biochemistry |
Conformal compound coatings stop the whiskers from penetrating a barrier, reaching a nearby termination and forming a short. | 8 | Metallurgy |
The reaction of the CFCs which is responsible for the depletion of ozone, is the photo-induced scission of a C-Cl bond:
:CClF → CClF + Cl
The chlorine atom, written often as Cl, behaves very differently from the chlorine molecule (Cl). The radical Cl is long-lived in the upper atmosphere, where it catalyzes the convers... | 2 | Environmental Chemistry |
The great oxygenation event began with the biologically induced appearance of oxygen in the Earth's atmosphere about 2.45 billion years ago. The rise of oxygen levels due to cyanobacterial photosynthesis in ancient microenvironments was probably highly toxic to the surrounding biota. Under these conditions, the selecti... | 1 | Biochemistry |
A new, effective and economical concept in pheromone delivery using a flowable formulation to create long lasting monolithic pheromone dispensers has been brought to the market in the past decade. These novel SPLAT pheromone mating disruption formulations can provide effective season long suppression effect (e.g., depe... | 1 | Biochemistry |
UV curing (ultraviolet curing) is the process by which ultraviolet light initiates a photochemical reaction that generates a crosslinked network of polymers through radical polymerization or cationic polymerization. UV curing is adaptable to printing, coating, decorating, stereolithography, and in the assembly of a va... | 5 | Photochemistry |
The symbol used to represent specific volume in equations is "v" with SI units of cubic meters per kilogram.
The symbol used to represent volume in equations is "V" with SI units of cubic meters.
When performing a thermodynamic analysis, it is typical to speak of intensive and extensive properties. Properties which dep... | 7 | Physical Chemistry |
The Latin word traces to the Proto-Indo-European root *gʷet- "pitch"; see that link for other cognates.
The expression "bitumen" originated in the Sanskrit, where we find the words "jatu", meaning "pitch", and "jatu-krit", meaning "pitch creating", "pitch producing" (referring to coniferous or resinous trees). The Lati... | 7 | Physical Chemistry |
In 1832, the family settled in Mecklenburg County, Virginia, east of Christiansville (now Chase City). Although he arrived too late to obtain the prospective teaching position, John William established a laboratory in Christiansville. Here he conducted experiments and published eight papers before entering medical sch... | 5 | Photochemistry |
Hyperpolarization is a change in membrane potential. Neuroscientists measure it using a technique known as patch clamping that allows them to record ion currents passing through individual channels. This is done using a glass micropipette, also called a patch pipette, with a 1 micrometer diameter. There is a small patc... | 7 | Physical Chemistry |
β-Thromboglobulin (β-TG), or beta-thromboglobulin, is a chemokine protein secreted by platelets. It is a type of chemokine (C-X-C motif) ligand 7. Along with platelet factor 4 (PF4), β-TG is one of the best-characterized platelet-specific proteins. β-TG and PF4 are stored in platelet alpha granules and are released dur... | 1 | Biochemistry |
Potential root causes of metallurgical failures are vast, spanning the lifecycle of component from design to manufacturing to usage. The most common reasons for failures can be classified into the following categories: | 8 | Metallurgy |
1,4-Butanedithiol is an organosulfur compound with the formula . It is a malodorous, colorless liquid that is highly soluble in organic solvents. The compound has found applications in biodegradable polymers. | 0 | Organic Chemistry |
From racemic acid found in grapes; from Latin racemus, meaning a bunch of grapes. This acid, when naturally produced in grapes, is only the right-handed version of the molecule, better known as tartaric acid. In many Germanic languages racemic acid is called “grape acid” e.g. German traubensäure and Swedish druvsyra. C... | 4 | Stereochemistry |
The eluent (mobile phase) should be the appropriate solvent to dissolve the polymer, should not interfere with the response of the polymer analyzed, and should wet the packing surface and make it inert to interactions with the polymers. The most common eluents for polymers that dissolve at room temperature GPC are tetr... | 3 | Analytical Chemistry |
The article has only treated the case in which particles have a parabolic relation between energy and momentum, as is the case in non-relativistic mechanics. For particles with energies close to their respective rest mass, the equations of special relativity are applicable. Where single-particle energy is given by:
For... | 7 | Physical Chemistry |
Throughout this article, [RL] denotes the concentration of a receptor-ligand complex, [R] the concentration of free receptor, and [L] the concentration of free ligand (so that the total concentration of the receptor and ligand are [R]+[RL] and [L]+[RL], respectively). Let n be the number of binding sites for ligand on ... | 1 | Biochemistry |
The citric acid cycle, also known as the Krebs cycle or the TCA (tricarboxylic acid) cycle is an 8-step process that takes the pyruvate generated by glycolysis and generates 4 NADH, FADH2, and GTP, which is further converted to ATP. It is only in step 5, where GTP is generated, by succinyl-CoA synthetase, and then conv... | 1 | Biochemistry |
Li(HMDS) can react with a wide range of metal halides, by a salt metathesis reaction, to give metal bis(trimethylsilyl)amides.
where X = Cl, Br, I and sometimes F
Metal bis(trimethylsilyl)amide complexes are lipophilic due to the ligand and hence are soluble in a range of nonpolar organic solvents, this often makes the... | 0 | Organic Chemistry |
The studies of rapamycin as immunosuppressive agent enabled us to understand its mechanism of action. It inhibits T-cell proliferation and proliferative responses induced by several cytokines, including interleukin 1 (IL-1), IL-2, IL-3, IL-4, IL-6, IGF, PDGF, and colony-stimulating factors (CSFs). Rapamycin inhibitors ... | 1 | Biochemistry |
An antibody that recognizes the protein can be added to this mixture to create an even larger complex with a greater shift. This method is referred to as a supershift assay, and is used to unambiguously identify a protein present in the protein – nucleic acid complex.
Often, an extra lane is run with a competitor oligo... | 1 | Biochemistry |
Biological carbon fixation or сarbon assimilation is the process by which inorganic carbon (particularly in the form of carbon dioxide) is converted to organic compounds by living organisms. The compounds are then used to store energy and as structure for other biomolecules. Carbon is primarily fixed through photosynth... | 5 | Photochemistry |
Age at time of death: Stillborn fetuses and infants putrefy slowly due to their sterility. Otherwise, however, younger people generally putrefy more quickly than older people.
Condition of the body: A body with a greater fat percentage and less lean body mass will have a faster rate of putrefaction, as fat retains more... | 1 | Biochemistry |
Column chromatography is an extremely time-consuming stage in any lab and can quickly become the bottleneck for any process lab. Many manufacturers like Biotage, Buchi, Interchim and Teledyne Isco have developed automated flash chromatography systems (typically referred to as LPLC, low pressure liquid chromatography, a... | 3 | Analytical Chemistry |
Etiocholanolone glucuronide (ETIO-G) is an endogenous, naturally occurring metabolite of testosterone. It is formed in the liver from etiocholanolone by UDP-glucuronyltransferases. ETIO-G has much higher water solubility than etiocholanolone and is eventually excreted in the urine via the kidneys. Along with androstero... | 1 | Biochemistry |
A plastic crystal is a crystal composed of weakly interacting molecules that possess some orientational or conformational degree of freedom. The name plastic crystal refers to the mechanical softness of such phases: they resemble waxes and are easily deformed. If the internal degree of freedom is molecular rotation, th... | 7 | Physical Chemistry |
Latia luciferin is, in terms of chemistry, (E)-2-methyl-4-(2,6,6-trimethyl-1-cyclohex-1-yl)-1-buten-1-ol formate and is from the freshwater snail Latia neritoides. | 1 | Biochemistry |
Monoamine nuclei are clusters of cells that primarily use monoamine neurotransmitters to communicate. The raphe nuclei, ventral tegmental area, and locus coeruleus have been included in texts about monoamine nuclei. These nuclei receive a variety of inputs including from other monoamines, as well as from glutaminergi... | 1 | Biochemistry |
When the solute undergoes ionic dissociation in solution (for example a salt), the system becomes decidedly non-ideal and we need to take the dissociation process into consideration. One can define activities for the cations and anions separately ( and ).
In a liquid solution the activity coefficient of a given ion (e.... | 7 | Physical Chemistry |
Water oxidation is a more complex chemical reaction than proton reduction. In nature, the oxygen-evolving complex performs this reaction by accumulating reducing equivalents (electrons) in a manganese-calcium cluster within photosystem II (PS II), then delivering them to water molecules, with the resulting production o... | 5 | Photochemistry |
Ketenes are highly electrophilic at the carbon atom bonded with the heteroatom, due to its sp character. Ketene can be formed with different heteroatom bonded to the sp carbon atom, such as O, S or Se, respectively named ketene, thioketene and selenoketene.
Ethenone, the simplest ketene, has different experimental leng... | 0 | Organic Chemistry |
π–π interactions are associated with the interaction between the π-orbitals of a molecular system. The high polarizability of aromatic rings lead to dispersive interactions as major contribution to so-called stacking effects. These play a major role for interactions of nucleobases e.g. in DNA. For a simple example, a b... | 6 | Supramolecular Chemistry |
Genes nested opposite the coding sequences of their host genes are very rare, and have been observed in prokaryotes, and more recently, in yeast (S. cerevisiae) and in Tetrahymena thermophila. These non-intronic nested genes remain to be identified in metazoan genomes. As with intronic nested genes, nonintronic nested ... | 1 | Biochemistry |
The Institute for Chemistry and Biology of the Marine Environment of the Carl von Ossietzky University of Oldenburg (, abbreviated ICBM)
is one of the marine science institutes at the German coast and the only university-based marine research institute in Lower Saxony, Germany.
The ICBM is located on the campus Wechloy... | 9 | Geochemistry |
Seventy percent of the worlds supply of ascorbic acid is produced in China. Ascorbic acid is prepared in industry from glucose in a method based on the historical Reichstein process. In the first of a five-step process, glucose is catalytically hydrogenated to sorbitol, which is then oxidized by the microorganism Aceto... | 1 | Biochemistry |
A fusible alloy is a metal alloy capable of being easily fused, i.e. easily meltable, at relatively low temperatures. Fusible alloys are commonly, but not necessarily, eutectic alloys.
Sometimes the term "fusible alloy" is used to describe alloys with a melting point below . Fusible alloys in this sense are used for so... | 8 | Metallurgy |
In 1662, Robert Boyle systematically studied the relationship between the volume and pressure of a fixed amount of gas at a constant temperature. He observed that the volume of a given mass of a gas is inversely proportional to its pressure at a constant temperature.
Boyle's law, published in 1662, states that, at a co... | 7 | Physical Chemistry |
Due to its inherent microbial nature, nitrification in soils is greatly susceptible to soil conditions. In general, soil nitrification will proceed at optimal rates if the conditions for the microbial communities foster healthy microbial growth and activity. Soil conditions that have an effect on nitrification rates in... | 1 | Biochemistry |
Base saturation expresses the percentage of potential CEC occupied by the cations Ca, Mg, K or Na. These are traditionally termed "base cations" because they are non-acidic, although they are not bases in the usual chemical sense. Base saturation provides an index of soil weathering and reflects the availability of exc... | 9 | Geochemistry |
Testing for gold with acid capitalizes on gold's status as a noble metal, resistant to corrosion, oxidation, or acid. The procedure includes rubbing the gold-colored item on black stone, leaving a visible mark. The mark undergoes scrutiny by applying nitric acid, which dissolves the mark of any item not gold, stainless... | 3 | Analytical Chemistry |
The genus was previously only known from two species from highly disjunct localities – Ancyronyx variegatus from North America (described in 1824) and Ancyronyx acaroides from Palembang in Sumatra (described in 1896). This strange distribution pattern (and the fact that there were no new specimens of A. acaroides recov... | 2 | Environmental Chemistry |
In biochemistry, a Janin plot, like a Ramachandran plot, is a way to visualize dihedral angle distributions in protein structures. While a Ramachandran plot relates the two backbone dihedral angles, a Janin plot relates the first side chain dihedral angle χ-1 against χ-2. Because not all amino acids have these dihedral... | 1 | Biochemistry |
TFH is a ten‐subunit complex; seven of these subunits comprise the “core” whereas three comprise the dissociable “CAK” (CDK Activating Kinase) module. The core consists of subunits XPB, XPD, p62, p52, p44, p34 and p8 while CAK is composed of CDK7, cyclin H, and MAT1. | 1 | Biochemistry |
* Hoffman-La Roche Award from the Canadian Society for Chemistry (1997)
* Ottawa Life Sciences Council Achievement Award (2001)
* Rotary International Paul Harris Fellowship (2001)
* National Research Council of Canada Royalty Sharing Award (2001)
* Melville L. Wolfrom Award from the American Chemical Society Division ... | 0 | Organic Chemistry |
These tests validated the system for planetary exploration. Some improvements to be addressed in the future are instrument miniaturization, extraction protocols, and antibody stability under outer space conditions. SOLID would be one of the payloads of the proposed Icebreaker Life to Mars, or a lander to Europa. | 1 | Biochemistry |
A 1995 review study found that there is no clinical benefit to the use of CoQ in the treatment of periodontal disease. | 1 | Biochemistry |
Increasing the intensity of the electromagnetic field and the particle velocity, the emission of photons with energy comparable to the electron one becomes more probable and non-linear inverse Compton scattering starts to progressively differ from the classical limit because of quantum effects such as photon recoil. A... | 7 | Physical Chemistry |
If an infinitesimally small amount of heat is supplied to a system in a reversible way then, according to the second law of thermodynamics, the entropy change of the system is given by:
Since
where C is the heat capacity, it follows that:
The heat capacity depends on how the external variables of the system are change... | 7 | Physical Chemistry |
The Fourier-domain version of the a/LCI system uses a superluminescent diode (SLD) with a fiber-coupled output as the light source. A fiber splitter separates the signal path at 90% intensity and the reference path at 10%.
The light from the SLD passes through an optical isolator and subsequently a polarization control... | 7 | Physical Chemistry |
Cyanobacteria contain both PSI and PSII. Their light-harvesting system is different from that found in plants (they use phycobilins, rather than chlorophylls, as antenna pigments), but their electron transport chain
→ PSII → plastoquinol → bf → cytochrome c → PSI → ferredoxin → NADPH
... | 5 | Photochemistry |
Krister Holmberg, born 1946, is a Swedish chemist.
Holmberg took a PhD in Organic Chemistry from Chalmers University of Technology in Gothenburg, Sweden in 1974. He then worked in industry for many years and he was R&D Director of Berol Nobel in Stenungsund, Sweden. During the period 1991-1998 he was Director of the In... | 0 | Organic Chemistry |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.