Detection of Calcareous Corpuscles in Spargana of Spirometra Species by Histological Studies | Chapter 1 | Innovations in Biological Science Vol. 10

Tissues of sparganum of Spirometra (a larval stage) contain mineral concretions termed calcareous corpuscles. These corpuscles serve as a focal deposition of calcium protecting the larvae against calcification. Calcareous corpuscles are believed to form either intracellular or extracellular and the cell type involved, the place of formation and the mechanism of mineral deposition seem to be also diverse. In the present study, histological studies of spargana were made at the light microscope level. It was intended to ascertain if calcareous corpuscles are present in the body of sparganum of Spirometra species. Spargana recovered from naturally infected frogs (R. cancrivora) had thick heads and thin bodies. The result of histological sections of the spargana stained with Haematoxylin-eosin showed calcareous corpuscles which were ovoid in shape and irregularly distributed in the parenchyma of the body of spargana. A total of 13 spargana were measured and the range of length was 11–50 mm and width 0.5–1.5 mm. The mean measurements were 27.6 x 0.9 mm. In conclusion, the spargana of Spirometra species have calcareous corpuscles in the body parenchyma.

 

Author(s) Details

Nicholas J. Kavana

Department of Microbiology and Parasitology, St. Francis University College of Health and Allied Sciences, Ifakara, Tanzania.

 

Please see the book here:- https://doi.org/10.9734/bpi/ibs/v10/3680G

Adsorption of Dye Eosin and Acid Yellow RR from an Aqueous Solution on Two Different Samples of Activated Carbon by Static Batch Method | Chapter 6 | International Research in Environment, Geography and Earth Science Vol.2

 The present paper deals with removal of dye Eosin and Acid Yellow RR on two different samples of

activated carbon by static batch method. Experimental data on optical density of blank solutions of
different concentrations of the two dyes ranging from 10 to 100 mg/L and optical density of solutions
after adsorption on activated carbon samples were taken and analyzed. Calibration curves were
plotted and the amount of dye adsorbed was calculated. The data was fitted to Langmuir and
Freundlich isotherms for two different carbon samples and different concentration values. Constants
were calculated from the slope and intercept values of the isotherms. Coefficient of correlation R2 and
Standard Deviation SD were also noted. The data fitted well to the isotherms. It was observed that
adsorption decreased with increase in ppm concentrations. Carbon sample C2 showed higher
potential to adsorb the dye Eosin and C1 showed higher potential to adsorb Acid Yellow RR. Further
Carbon sample C2 showed better adsorption in acidic pH as compared to in alkaline pH for both dyes.
From the analysis of the data it is shown that C2 sample has a good capacity to remove the textile dye
from the residue water although C1 was also good for Acid Yellow RR.

Author(s) Details

Dr. Rita Kant
Institute of Fashion Technology, Panjab University, Chandigarh, India.

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