| 词汇 | pyrene |
| 释义 | BETA Examples of pyrenepyrene isn’t in the Cambridge Dictionary yet. You can help! Fraction 2 contains 15.6 % phenanthrene, but also fluorene, anthracene, fluoranthene and pyrene. Finally, the pyrene cover was opened and the seeds classified into three main groups. From the 6234 pyrenes collected, empty pyrenes were separated and removed by two flotation episodes (23.3% of total), the remainder being employed in the experiment. The following day, pyrenes were extracted manually from the fruits and the remains of the pulp were washed off with a water jet. Pyrene is a nontoxic fluorescent compound whose fluorescence is quenched in the presence of oxygen. Inside the tanks you suffered from the combined effects of the exhaust from the engine, the fumes from the pyrene fire-extinguishers and from petrol fumes. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The type which has raised most concern and, as a consequence, for which most measurements have been made is benzo(a)pyrene. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Pyrene self associates in membrane and then excited pyrene excites other pyrene. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. An example is benzo(a)pyrene that is metabolized in two steps, oxidation and conjugation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It has been used as a solvent probe, similar to pyrene. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Pyrene gives birth to a serpent and runs away to the woods, afraid that her father will be angry. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its fluorescence emission spectrum is very sensitive to solvent polarity, so pyrene has been used as a probe to determine solvent environments. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As benzo(a)pyrene occurs in tobacco smoke, the carcinogenic effects of tobacco may also be increased by kava consumption. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For instance the electron affinity for benzene is negative, as is that of naphthalene, while those of anthracene, phenanthrene and pyrene are positive. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some of the chemicals released in this process are benzo(a)pyrene and other polyaromatic hydrocarbons. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Flowers are white or greenish white and the fruits are orange to brown, 23 cm long, with edible white pulp surrounding a 2-locular pyrene. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is not as thermodynamically stable as pyrene because its electrons can not resonate throughout the complete structure like the corresponding ones in pyrene. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, pyrene contains 16 conjugated electrons (8 bonds), and coronene contains 24 conjugated electrons (12 bonds). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. |
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