|   | 
Details
   web
Records
Author Lumsden, P. J., & Furuya, M.
Title Evidence for Two Actions of Light in the Photoperiodic Induction of Flowering in <italic>Pharbitis nil</italic> Type Journal Article
Year (up) 1986 Publication Plant and Cell Physiology Abbreviated Journal
Volume Issue Pages
Keywords Plants
Abstract Using one-day-old light-grown seedlings of Pharbitis nil we have shown that there are two distinct responses to light during the inductive dark period. The first is the classic night-break, which inhibits flowering at a specific stage of the circadian rhythm (assumed to be the basis of dark time measurement). The second action is to control the phase of this rhythm. The two responses were compared at the 6th and 8th hour of darkness. They differed in their dose responses, and by using very short exposures it was possible to achieve one response without the other. The response of the rhythm to light displayed characteristics of other circadian rhythms; the direction and sensitivity of the phase shift changed between the 6th and 8th h, the rhythm was reset by longer exposures to light, and with one critical light treatment at the appropriate phase, the rhythm was apparently abolished. These results offer direct support for an external coincidence model in the photoperiodic control of floral induction.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1471-9053 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number IDA @ intern @ Serial 2375
Permanent link to this record
 

 
Author Marwan, W.; Hegemann, P.; Oesterhelt, D.
Title Single photon detection by an archaebacterium Type Journal Article
Year (up) 1988 Publication Journal of Molecular Biology Abbreviated Journal Journal of Molecular Biology
Volume 199 Issue 4 Pages 663-664
Keywords Bacteria
Abstract Halobacteria are attracted by green and repelled by near ultraviolet or blue light. The photophobic response to blue light is mediated by the retinal protein P480. The analysis of stimulus response curves with Poisson statistical methods reveals that the photophobic response can be elicited at minimum by a single photon.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0022-2836 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2754
Permanent link to this record
 

 
Author Garstang, R.H.
Title Night-sky brightness at observatories and sites. Type Journal Article
Year (up) 1989 Publication Publ Astron Soc Pac Abbreviated Journal
Volume 101 Issue Pages 306-329
Keywords Skyglow
Abstract A model previously constructed for night-sky brightness calculations has been modified to allow for the curvature of the earth. The model has been applied to calculate the brightness at the following observatories: Mount Wilson, Lick, Mount Palomar, Kitt Peak, Sacramento Peak, Mauna Kea, McDonald, San Pedro Martir, Mount Hopkins, Mount Lemmon, Lowell (Mars Hill), Lowell (Anderson Mesa), Fick, Iowa, Van Vleck, David Dunlap, Anglo-Australian, Haute Provence, and Cerro Tololo. Calculations have also been carried out for the following prospective observatory sites: Junipero Serra, Mount Graham, Charleston Peak, Wheeler Peak, Miller Peak, San Benito Mountain, Lowell (Hutch Mountain), Lowell (Saddle Mountain), and South Baldy (New Mexico). The model is extended to calculate magnitudes in the B photometric band.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 559
Permanent link to this record
 

 
Author Stanjek, K.
Title Zwielicht. Die Ökologie der künstlichen Helligkeit. Type Journal Article
Year (up) 1989 Publication Raben, München Abbreviated Journal
Volume Issue Pages 170
Keywords Animals
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 697
Permanent link to this record
 

 
Author Garstang, R.H.
Title The Status and Prospects for Ground-Based Observatory Sites Type Journal Article
Year (up) 1989 Publication Annual Review of Astronomy and Astrophysics Abbreviated Journal Annu. Rev. Astron. Astrophys.
Volume 27 Issue 1 Pages 19-40
Keywords Skyglow
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0066-4146 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2437
Permanent link to this record