Influence of photoperiod in a subtropical migratory finch, the Common Indian Rose finch Carpodacus erythrinus

Ibis ◽  
2008 ◽  
Vol 125 (1) ◽  
pp. 115-120 ◽  
Author(s):  
P. D. Tewary ◽  
Vinod Kumar ◽  
B. N. Prasad
Keyword(s):  
Carpodacus Erythrinus ◽  
The Common

Migration routes and timing in a bird wintering in South Asia, the Common Rosefinch Carpodacus erythrinus

2016 ◽  
Vol 157 (3) ◽  
pp. 671-679 ◽  
Author(s):  
Robert Stach ◽  
Cecilia Kullberg ◽  
Sven Jakobsson ◽  
Kåre Ström ◽  
Thord Fransson
Keyword(s):  
South Asia ◽  
Migration Routes ◽  
Carpodacus Erythrinus ◽  
The Common ◽  
Common Rosefinch

scholarly journals Breeding and Demographic Parameters and Range Expansion of the Common Rosefinch (Carpodacus erythrinus)

Ring ◽  
2008 ◽  
Vol 30 (1-2) ◽  
pp. 63-69 ◽  
Author(s):  
Vladimir Payevsky
Keyword(s):  
Range Expansion ◽  
Demographic Parameters ◽  
Population Parameters ◽  
The Baltic Sea ◽  
Population Characteristic ◽  
Carpodacus Erythrinus ◽  
The Common ◽  
The Baltic ◽  
Common Rosefinch ◽  
Different Parts

Breeding and Demographic Parameters and Range Expansion of the Common Rosefinch (Carpodacus erythrinus) Breeding biology, age structure and other population parameters of the Common Rosefinch, collected on the Courish Spit of the Baltic Sea, are presented. The results are compared with similar population characteristic in different parts of the range. All materials, especially the proportion of breeding yearling males, are discussed in connection with the process of range expansion of the species. The expectation of greater proportion of yearling males in new areas did not proved.

Catalogue reduction techniques

1978 ◽  
Vol 48 ◽  
pp. 389-390 ◽  
Author(s):  
Chr. de Vegt
Keyword(s):  
Adjustment Process ◽  
Proper Motions ◽  
Measuring Process ◽  
Aerial Photogrammetry ◽  
Reduction Techniques ◽  
Observational Technique ◽  
The Common ◽  
Astrometric Data

AbstractReduction techniques as applied to astrometric data material tend to split up traditionally into at least two different classes according to the observational technique used, namely transit circle observations and photographic observations. Although it is not realized fully in practice at present, the application of a blockadjustment technique for all kind of catalogue reductions is suggested. The term blockadjustment shall denote in this context the common adjustment of the principal unknowns which are the positions, proper motions and certain reduction parameters modelling the systematic properties of the observational process. Especially for old epoch catalogue data we frequently meet the situation that no independent detailed information on the telescope properties and other instrumental parameters, describing for example the measuring process, is available from special calibration observations or measurements; therefore the adjustment process should be highly self-calibrating, that means: all necessary information has to be extracted from the catalogue data themselves. Successful applications of this concept have been made already in the field of aerial photogrammetry.

Renilla Bioluminescence: A Morphologic Approach to the Location of Photocytes

1974 ◽  
Vol 32 ◽  
pp. 208-209
Author(s):  
Ben O. Spurlock ◽  
Milton J. Cormier
Keyword(s):  
Excited State ◽  
Ground State ◽  
Molecular Basis ◽  
Light Emission ◽  
Chemical Basis ◽  
Electronic Excited State ◽  
Colonial Form ◽  
The Common ◽  
Eighteenth And Nineteenth Centuries ◽  
Catalyzed Oxidation

The phenomenon of bioluminescence has fascinated layman and scientist alike for many centuries. During the eighteenth and nineteenth centuries a number of observations were reported on the physiology of bioluminescence in Renilla, the common sea pansy. More recently biochemists have directed their attention to the molecular basis of luminosity in this colonial form. These studies have centered primarily on defining the chemical basis for bioluminescence and its control. It is now established that bioluminescence in Renilla arises due to the luciferase-catalyzed oxidation of luciferin. This results in the creation of a product (oxyluciferin) in an electronic excited state. The transition of oxyluciferin from its excited state to the ground state leads to light emission.

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