| 词汇 | anion |
| 释义 | anion noun[ C ] chemistry specializeduk /ˈæn.aɪ.ən/ us /ˈæn.aɪ.ən/ an ion with a negative electrical charge阴离子 Physics: atoms, molecules & sub-atomic particles acceptor alpha particle anti-radical antilepton antimatter antineutrino benzene ring beta decay beta particle hadron Higgs boson interatomic interelectronic interionic molecularly monatomic multi-molecular multiparticle muon positron In such a circle as that delineated, therefore, all the known anions may be grouped within, and all the cations without. The difference might possibly depend upon the arrangement of ions, anions and cations upon two sides of the permeable membrane of a repair cell. Examples of anionanion Many inflammatory cells, such as macrophages, produce and release superoxide anions and nitric oxide as part of their microbicidal effector molecules. Simple partitioning of anions and dissolved organic carbon in a forest soil. Overall the classification scheme, which is based on grouping by anion type, is logical and well organized. The permeabilities are equal for all the nonatomic anions tested, and that of the atomic anions vary inversely with their aqueous mobilities. It also binds other anions and decreases the absorption of the fat soluble vitamins. One anion and one cation resin bag were secured to a plastic stake with monofilament line at six random locations in each 1-ha plot. The selectivity sequence among anions roughly follows their aqueous mobilities. The binding of some small anions to serum albumin. A number of specific transport proteins are located in biliary epithelia, including anion exchangers and water transporters (for a review see ref. 41). The information on selectivity among cations or among anions is sparse, but intriguing. This is a complex form of the anomalous mole fraction effect - one that effectively involves different affinities for anions and cations. Neutrophil-derived superoxide anion induces lipid peroxidation and stimulates collagen synthesis in human hepatic stellate cells : role of nitric oxide. Uptake by either transporters or coupled cation plus anion uptake on separate channels might then be followed by diffusion and dilution within the syncytium. Analysis of anions leached from rock samples suggests that subsurface pyrite weathering is centered at two zones within the ore body. An example is the mobilization of soil phosphate by excretion of particular organic anions. 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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