On a new trematodeDiplodiscus chauhani N. Sp. from the common Indian frog,Rana cyanophlyctis Schneider

1969 ◽  
Vol 69 (4) ◽  
pp. 203-206
Author(s):  
K. C. Pandey
Keyword(s):  
The Common ◽  
Indian Frog

Partial Hermaphroditism in the Common Indian Frog, Rana tigrina

Copeia ◽  
1947 ◽  
Vol 1947 (2) ◽  
pp. 137
Author(s):  
Brahma Swarup Kaushiva
Keyword(s):  
Rana Tigrina ◽  
The Common ◽  
Indian Frog

On the Synonymy of the Genera Tremiorchis Mehra and Negi 1926 and Centrovitus Bhalerao 1926, with the description of Tremiorchis varanum n.sp.

Parasitology ◽  
1930 ◽  
Vol 22 (3) ◽  
pp. 302-312 ◽  
Author(s):  
S. C. Verma
Keyword(s):  
New Species ◽  
New Genus ◽  
The Common ◽  
Indian Frog ◽  
A New Species

Bhalerao (1926) described a trematode from the common Indian frog, Ranatigrina, which he placed in a new genus Centrovitus and a new species pentadelphi. Mehra and Negi (1926) gave a fuller account of the same form, from the same host and practically the same locality, under the designation Tremiorchis ranarum n.g., n.sp.

On a New Trematode Tremiorchis ranarum nov. gen, nov. spec., from the Common Indian Frog Rana tigrina

Parasitology ◽  
1926 ◽  
Vol 18 (2) ◽  
pp. 168-181 ◽  
Author(s):  
H. R. Mehra ◽  
Pratap Singh Negi
Keyword(s):  
Small Intestine ◽  
Trematode Parasite ◽  
Northern India ◽  
Rana Tigrina ◽  
The Common ◽  
Indian Frog

Tremiorchis ranarum nov.gen., nov.sp., was first found in the small intestine and duodenum of thirty-six out of one hundred and two specimens of Rana tigrina examined for the purpose. Subsequently many more frogs have been examined and we have obtained these parasites in one out of every three frogs. Rana tigrina being the commonest species of frog available in Northern India is used as the type for dissection in every laboratory and it appears, therefore, strange that this common Trematode parasite should have remained unknown till now. The number of parasites in a host is very variable. Three hosts were found infected with one parasite each, one had 4, one had 5, one 16, one 18, one 196 and one as many as 204.

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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