Electrical Conductances of Sodium Carboxymethylcellulose in Acetonitrile (1) + Water (2) Mixed Solvent Media in the Presence of Sodium Chloride at 308.15 K

2011 ◽  
Vol 56 (6) ◽  
pp. 2870-2876 ◽  
Author(s):  
Prabir Nandi ◽  
Bijan Das

Author(s):  
Popi Patilaya ◽  
Dadang Irfan Husori ◽  
Imam Bagus Sumantri

ABSTRACTObjective: This study was to investigate the anthelmintic effects of ethanol extract of Curanga fel-terrae leaves on Ascaridia galli.Methods: Extract of C. fel-terrae was prepared by percolating the dried powder of the plant leaves. To observe anthelmintic effects, A. galli wasexposed to the plant extract solutions in different concentrations at room temperature for 72 hrs. Sodium chloride 0.9%, sodium carboxymethylcellulose 0.5%, and albendazole 0.1% were served as negative control, solvent control, and positive control, respectively. The anthelmintic effectswere determined by observing the time taken for paralysis and the time taken for death of A. galli during experiment.Results: The results demonstrated that there were no different effects between negative and solvent controls. However, the ethanol extract ofC. fel-terrae leaves exhibited significantly paralysis and death effects toward A. galli. The plant extracts at the concentration of 100 mg/ml showedsimilar anthelmintic effects with albendazole 0.1%. This study also indicated that the paralysis and death effects of plant extract were shorter whenthe worms exposed with the concentration above of 100 mg/ml.Conclusion: This study indicated that the ethanol extract of C. fel-terrae leaves has potential anthelmintic effects on A. galli.Keywords: Curanga fel-terrae, Ascaridia galli, Anthelmintic, Helminthiasis, Ascariasis. 





1997 ◽  
Vol 52 (11) ◽  
pp. 1372-1375
Author(s):  
Masunobu Maeda ◽  
Chisako Iwata

Abstract Dissociation constants of amonium ion (Ka= [H +][NH3]/[NH4+], where [ ] denotes the con­centration) in 20 mass % ethanol + water mixtures with different concentrations of sodium chloride were determined by means of a glass electrode. The dissociation constants in pKa units (on molarity and molality bases) increase linearly with increasing ionic strength. Activ­ity coefficients of ammonia in the ethanol + water mixtures were determined by a transpiration method. The observed dissociation constants on the molality scale were compared with those calculated from the Pitzer equations modified on the basis of the principles of corre­sponding states. The observed values agreed with the calculated ones almost within experi­mental uncertainties.







Soft Matter ◽  
2015 ◽  
Vol 11 (20) ◽  
pp. 4133-4140 ◽  
Author(s):  
Bijan Das ◽  
Amritendu Chatterjee

Transport and frictional behaviour of sodium carboxymethylcellulose dissolved in methanol–water mixed solvent media with varying volume fractions (v) of methanol have been investigated conductometrically in presence of different concentrations of NaCl and NaBr.



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