Showing papers in "Vidyodaya Journal of Science in 1990"
Journal Article•
TL;DR: It seems most likely that a large portion of the metabolic protons found deficit in blood during recovery was eliminated into the environmental water through appropriate adjustment of Na+ / H + and Cl - / HCO 3 - exchanges [unctioning at the gill epithelium].
Abstract: Rainbow trout ( Salmo gairdneri ) were exercised at greater than 3.5 1/sec until fatigue occurred. Severe exercise induced marked disturbances in acid base, ionic and water balance. Immediately after fatigue the drop in pH was due to the combined effects of increased PC02 and metabolic acid. But the bulk of the increase in H+ buffered by blood was caused by an increase in metabolic acid. The peak in this contribution, occurring at 1 hour post exercise corresponded to the peak lactate concentration. However, there was a considerable quantitative discrepancy between I H+I and I L- I. At 2 hours post exercise I L- I exceeded I H+ I by a maximum volue of l0.4 mequiv/l). A rapid increase in plasma volume during recovery following fatigue was accompanied by increases In total Na+ and Cl- contents of over 50% of the respective resting values. This increase in Na+ and CIcontents occurred presumably via branchial Na+ /H+ and CI-/HCO 3- ion exchange mechanis ms. It seems most likely that a large portion of the metabolic protons found ln deficit in blood during recovery was eliminated into the environmental water through appropriate adjustment of Na+ / H + and Cl - / HCO 3 - exchanges [unctioning at the gill epithelium. The rest of the metabolic protons contributing to the deficit were most likely exchanged for intracellular K +.
2 citations
Journal Article•
TL;DR: An overview of the major areas of applications of chemically modified electrods can be found in this paper, where successful examples from each area have been used to illustrate the principles involved in these applications.
Abstract: An overview Is presented of the major areas of applications of chemically modified electrods. No attempt has been made to comprehensively review the literature. Rather, successful examples from each area have been used to illustrate the principles involved.
Journal Article•
TL;DR: The results show that orchiectomy parameters of exploratory behaviour, namely the number of head dips, locomotory significantly impaired three activity and number of rears, when evaluated using the hole-board technique, suggest that some factor/s secreted by testes influence exploratories behaviour.
Abstract: This study was designed to assess whether the testes influence the exploratory behaviour of rats. The results show that orchiectomy parameters of exploratory behaviour, namely the number of head dips, locomotory significantly impaired three activity and number of rears, when evaluated using the hole-board technique. The fourth parameter tested, the time spent head dipping however remained unaltered. These findings suggest that some factor/s secreted by testes influence exploratory behaviour. Key words: orchiectomy, exploratory behaviour, rat, hole-board technique.