| 词汇 | hydrogen-peroxide |
| 释义 | hydrogen peroxide noun[ U ] chemistry specializeduk /ˌhaɪ.drɪ.dʒən pəˈrɒk.saɪd/ us /ˌhaɪ.drɪ.dʒən pəˈrɑːk.saɪd/ a clear liquid chemical used to kill bacteria, to remove colour from cloth, and to bleach hair过氧化氢，双氧水（一种无色化学试剂，用于杀菌，为织物、毛发去色等） See also peroxide Chemicals, chemical compounds & gases acetic acid acetone acrolein acrylamide activated charcoal adenine agglomerate ethyl alcohol glyphosate H2O HCFC HFC hyaluronic acid hydrochloric acid laughing gas limescale meths oxyacetylene prussic acid tartaric acid hydrogen peroxide | American Dictionaryhydrogen peroxide noun[ U ] us/ˈhɑɪ·drə·dʒən pəˈrɑk·sɑɪd/ a liquid chemical used for killing bacteria or making hair lighter in color Examples of hydrogen peroxidehydrogen peroxide The development of pesticide resistance in sea lice populations has been demonstrated for hydrogenperoxide and dichlorvos. Both enzymes were insensitive to cyanide but sensitive to hydrogenperoxide, properties characteristic of iron-containing superoxide dismutase. Alternatively, the sections were treated with 1% hydrogenperoxide in methanol for 30 minutes to inactivate endogenous peroxidases. Other compounds that may be introduced continuously into the waterlines during patient treatment are hydrogenperoxide and ozone. Sanitizers evaluated have included hydrogenperoxide, sodium hypochlorite (chlorine), and ethanol. The concentration of hydrogenperoxide which impaired embryo growth was established in separate preliminary experiments (see below). At low concentration exogenous hydrogenperoxide induced an adaptive response of cells by promotion of synthesis of antioxidant enzymes and heat shock proteins. Degradation of hydrogenperoxide by catalase produced by bacterial cells requires a concerted effort by a group of cells. The ferric ion catalyzed decomposition of hydrogenperoxide in perchloric acid solution. Bacteria in human mouths involved in the production and utilization of hydrogenperoxide. In this paper we documented a positive effect of these factors at a concentration of 100 ng/ml on embryos treated with hydrogenperoxide. Tested factors revealed a varying extent of protective activity against oxidative stress caused by hydrogenperoxide. The concentration of hydrogenperoxide was established in separate preliminary experiments. Here we use this technique to monitor gradients of calcium, potassium, oxygen and hydrogenperoxide around individual mouse preimplantation embryos. The concentration of calcium in the medium was unaltered for measurements of potassium, oxygen and hydrogenperoxide gradients. See all examples of hydrogen peroxide 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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