Betekenis van:
light hour

Voorbeeldzinnen

1. It's odd that there should be a light on in the office at this hour.
2. A 12 hour/12 hour light and dark cycle is appropriate.
3. Most laboratory non-human primates should have a 12 hour/12 hour light/dark cycle.
4. Holding of ferrets under the natural twenty-four-hour light-dark cycle is acceptable.
5. Holding of cats under the natural twenty-four-hour light-dark cycle is acceptable.
6. The holding of dogs under the natural twenty-four-hour light-dark cycle is acceptable.
7. A 12 hour/12 hour light and dark cycle is appropriate. The daylight period should not be less than eight hours.
8. Most laboratory non-human primates should have a 12 hour/12 hour light/dark cycle. Simulated dawn and dusk lighting may be beneficial for some species.
9. in case of replaceable light sources: using a mass production filament light source, which has been aged for at least one hour, or a mass production gas-discharge light source, which has been aged for at least 15 hours.
10. For this purpose, non-fibrous matter which can be extracted with light petroleum and water is removed by treating the air-dry test sample in a Soxhlet extractor with light petroleum for one hour at a minimum rate of six cycles per hour.
11. Allow the light petroleum to evaporate from the sample, which is then extracted by direct treatment consisting in soaking the specimen in water at room temperature for one hour and then soaking it in water at 65 ± 5 °C for a further hour, agitating the liquor from time to time.
12. Allow the light petroleum to evaporate from the sample, which is then extracted by direct treatment consisting in soaking the specimen in water at room temperature for one hour and then soaking it in water at 65 ± 5 °C for a further hour, agitating the liquor from time to time. Use a liquor:specimen ratio of 100:1.