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Author Corbet, P.S.
Title Lunar Periodicity of Aquatic Insects in Lake Victoria Type Journal Article
Year (up) 1958 Publication Nature Abbreviated Journal Nature
Volume 182 Issue 4631 Pages 330-331
Keywords Animals
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ISSN 0028-0836 ISBN Medium
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Notes Approved no
Call Number LoNNe @ christopher.kyba @ Serial 428
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Author Hastings, J. W.; B. M. Sweeney
Title A persistent diurnal rhythm of luminescence in Ganyaulax Polyedra Type Journal Article
Year (up) 1958 Publication The Biological Bulletin Abbreviated Journal
Volume 115 Issue 3 Pages 440-458
Keywords Animals
Abstract 1. The characteristics of a persistent diurnal rhythm of luminescence in the dinoflagellate Gonyaulax polyedra are described.

2. The light emission upon stimulation, from cultures which are kept in alternating light and dark periods of 12 hours each (= LD), is 40 to 60 times greater during the dark period than during the light period. If LD cultures are placed in continuous dim light (100 foot-candles) a diurnal rhythm of luminescence persists. If LD cultures are placed in continuous bright light (> 1500 foot-candles) the rhythm is damped, and no fluctuations occur in the amount of light emitted.

3. The occurrence of rhythmicity is not dependent upon prior exposure to LD conditions. Cultures which have been grown in bright light for as long as one year show a diurnal rhythm when placed in constant dim light or darkness. Cultures kept in alternating light and dark cycles which are greater or less than 24 hours similarly show a diurnal rhythm when returned to constant dim light or darkness. “Training” or “memory” is therefore not involved.

4. The rhythm can be entrained by light-dark cycles which are different from 24 hours. The period of the luminescence rhythm corresponds to light-dark cycles which have periods ranging between 12 and 32 hours.

5. The period of the rhythm is always close to 24 hours when the cells are kept under constant conditions, but it varies slightly depending upon the temperature and light intensity.

6. The phase of the rhythm under constant conditions is related to the time at which the previous lightand dark periods occurred. Moreover, the phase may be shifted by interposing a non-repeated exposure to a different light intensity. The number of hours by which the phase is shifted in such an experiment is dependent upon the intensity and duration of the light treatment, and the time in the cycle when it is administered.

7. Exhaustive mechanical stimulation does not alter the phase of the rhythm.

8. When cultures having different phases were mixed, no evidence was found which would indicate that there was any interaction between them.

9. The evidence presented indicates that the diurnal rhythmicity is the consequence of a basic oscillatory mechanism which is inherent to the cell.
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Call Number LoNNe @ kagoburian @ Serial 759
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Author Cochran, W.W.; Graber, R.R.
Title Attraction of nocturnal migrants by lights on a television tower Type Journal Article
Year (up) 1958 Publication The Wilson Bulletin Abbreviated Journal
Volume 70 Issue 4 Pages 378-380
Keywords Animals; Birds
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Notes Approved no
Call Number GFZ @ kyba @ Serial 2429
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Author Percival, D.
Title Street Furniture in Town and Countryside Type Journal Article
Year (up) 1958 Publication Official Architecture and Planning Abbreviated Journal
Volume 21 Issue 12 Pages 570-573
Keywords Lighting; Design
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Notes Approved no
Call Number GFZ @ kyba @ Serial 2432
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Author Bakken, H.H.; Zank, E.E.
Title Light and Power: Rates and Costs of Service in Wisconsin R.E.A. Cooperatives. Madison. Type Book Whole
Year (up) 1959 Publication Madison, University of Wisconsin Press Abbreviated Journal
Volume Issue Pages
Keywords Economy
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Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 880
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