| 词汇 | example_english_chelate |
| 释义 | Examples of chelateThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Combined effect of chelating agents and u ltrasound on biofilm removal from stainless s teel surfaces. Effects of certain metals and chelating agents on rat and dog epididymal spermatozoan motility. Effects of chelating agents on preimplantation development of mouse embryos in vitro. Research in trace element nutrition has led to the development of more bioavailable organic minerals, including trace minerals derived from chelates. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Shown above is a bisimide that chelates adenine in water. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The research supported that the metal-amino acid chelates were able to enhance mineral absorption. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alternative forms of iron (fumarate, gluconate, chelates) are less irritating and probably better absorbed. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Thus, metal chelates are relevant to the mobilization of metals in the soil, the uptake and the accumulation of metals into plants and microorganisms. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Chelates are not without side effects and can also remove beneficial metals from the body. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Ovalbumin chelates to heavy metals and traps the metal ions within the sulfhydryl bonds of the protein. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Metal chelates increase the contrast signal between normal and diseased tissues by changing the nuclear relaxation times of water molecules in their proximities. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. During this period, synthetic chelates were also being developed. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The animals absorb, digest and use mineral chelates better than inorganic minerals. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Chelates are dissolved organic substances that bind to metals and prevent them from forming larger molecules through oxidation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Many medications are known to chelate, or bind, zinc preventing the element from functioning properly. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Calcium citrate is also used as a water softener because the citrate ions can chelate unwanted metal ions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The acid has been observed to chelate metal ions such as calcium and magnesium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The high purity acetylacetonate anion complexes by bonding each oxygen atom to the metallic cation to form a chelate ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The chelate mimics the action that natural food performs by keeping the calcium soluble in the intestine. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Since catalyts often interconvert between various geometries, the rigidity of the chelate ring can be decisive. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Despite being neutral they are able to form stable complexes with high oxidation state metals, such as rare earths, due to the chelate effect. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The trimethylsilyl group activates the enol as a nucleophile and the initial reaction product is a titanium chelate which breaks down on hydrolysis. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The two macrocyclic rings form chelate complexes with bivalent metal ions, especially zinc, copper and nickel, as well as cobalt and rhodium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Many humic acids have two or more of these groups arranged so as to enable the formation of chelate complexes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. M chelate rings and tends not to form square-planar complexes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In some cases the chelate effect is so strong that no added base is needed to form the complex. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The number of chelate rings is one less than the number of donor atoms in the ligand. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The chelate effect increases as the number of chelate rings increases. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Although not as rapid-acting as iron chelate, its effects are longer-lasting. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The anion binds to metal cations through the two oxygen atoms, forming five-membered chelate rings. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Both oxygen atoms bind to the metal to form a six-membered chelate ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Six-membered chelate rings are formed by 1,3-diaminopropane. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They typically form 5- and 6-membered chelate rings. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. An acid-base reaction takes place with the formation of zinc eugenolate chelate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. One label is a fluorescent lanthanide chelate, which serves as the label that is monitored through an adequate 96/384 well plate reader. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Chelate complexes are contrasted with coordination complexes composed of monodentate ligands, which form only one bond with the central atom. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Metallacrowns typically contain fused chelate rings in their structure, which imparts them with substantial stability. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A variety of related chelate complexes have been developed, including gadodiamide. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. To prevent light-induced reversion to norbornadiene, diethyldithiocarbamate is added to chelate the nickel in the product. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Many compounds containing metals in rings are known, for example chelate rings. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Thus, the phenomenon of the chelate effect is a firmly established empirical fact. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Both oxygen centres bind to the metal to form a six-membered chelate ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Dimethoxyethane forms chelate complexes with cations and acts as a bidentate ligand. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The bite angle refers to the angle between the two bonds of a bidentate chelate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Hexadentate chelators, like deferoxamine, are large molecules, and are thus unlikely to be able to cross the blood-brain barrier to chelate the excess iron. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The sulfate ion can act as a ligand attaching either by one oxygen (monodentate) or by two oxygens as either a chelate or a bridge. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Magnesium citrate has been reported as more bioavailable than oxide or amino-acid chelate (glycinate) forms. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The chelate effect, below, is best explained in terms of thermodynamics. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They are approximately long, and attach themselves to the secondary lamellae of the gills of their hosts using their chelate (clawed) maxillipeds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The iminodiacetate anion can act as a tridentate ligand to form a metal complex with two, fused, five membered chelate rings. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The chelate is formed between the 2-carbonyl group of two separate lomefloxacin molecules. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The rapid exchange of this water ligand with bulk water is a major reason for the signal enhancing properties of the chelate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Complexes of polydentate ligands are called "chelate" complexes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A wide variety of ligands that chelate in the cis fashion already exist, but very few can link opposite vertices on a coordination polyhedron. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Iron can be made available immediately to the plant by the use of iron sulphate or iron chelate compounds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Unlike previous chiral ligands, the chirality of chiraphos arose from the backbone of the chelate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The forelegs have a chelate structure, with the subapical tooth or other teeth. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The ligand was an important demonstration of how the conformation of the chelate ring can affect asymmetric induction by a metal catalyst. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A common diphosphine ligand is dppe, which forms a five-membered chelate ring with most metals. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When the two phosphine substituents are linked by two to four carbon centres, the resulting ligands often chelate rings with a single metal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The pedipalp is a segmented, chelate (clawed) appendage used for prey immobilisation, defence and sensory purposes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. To solve this problem, contrast agents with disulfide, reversible bond between metal chelate and transduction moiety enhance the cell-associated retention. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In cyclic tetrapyrroles, lone electron pairs on nitrogen atoms facing the center of the macrocycle ring can bond or chelate with a metal ion such as iron, cobalt, or magnesium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The twin hydroxyl groups in each side-chain compete well with water for binding to surfaces, form polar attachments via hydrogen bonds, and chelate the metals in mineral surfaces. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The disulfide bond is reduced by the target cell environment and the metal chelate remains trapped in the cytoplasm, increasing the retention time of chelate in the target cell. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Patients with superficial siderosis are often treated with deferiprone, a lipid-soluble iron chelator, as this medication has been demonstrated to chelate iron in the central nervous system. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. To position phosphine donor groups trans on a coordination sphere, several atoms are required to link the donor centres and long-chain diphosphines are typically floppy and do not chelate well. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Sequestrants form chelate complexes with polyvalent metal ions, especially copper, iron and nickel, which serve as catalysts in the oxidation of the fats in the food. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The pigment biliverdin and its zinc chelate give a green or blue ground color, and protoporphyrin produces reds and browns as a ground color or as spotting. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The oxygens of the carbonyl and the hydroxyl group chelate the indium of the organoindium intermediate as illustrated below on the left by the two green bonds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The pigments biliverdin and its zinc chelate give a green or blue ground color, and protoporphyrin produces reds and browns as a ground color or as spotting. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Application of the micronutrients in sulphate form generally resulted in higher concentrations of these elements in grain than when the chelated forms were applied. The experiment was carried out to examine the combined effect of ultrasound delivered in chelating agent solutions. We evaluated chelating agents and treatments for their suitability in freeze-drying of porcine spermatozoa. However, it is the formation of chelating agents by organic processes that is of particular significance in weathering. However, more careful attention needs to be paid to the effect of chelating agents on fetal development after embryo transfer. The product also contains chelated micro- and macroelements and a wetting agent. Calcium might be chelated by the oviductal explants via calcium binding protein(s) or by some other yet unknown mechanism. Second, we observed that the extent of inactivation was not a function of the spin state (diamagnetic or paramagnetic) for metal chelates of the porphyrins and phthalocyanines. Several systematic, qualitative reviews highlight the clinical benefits of desferrioxamine treatment and, with respect to iron loading, acknowledge its ability to maintain harmless hepatic iron levels in properly chelated patients. We now have compounds which, if you want a new word in your list of chemical jargon, are called "chelates". From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Chelates allow a lower supplementation rate of trace minerals with an equivalent or improved effect on animal health, growth and productivity. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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