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| | Articles of Volume : 1 Issue : 2 ( 1, August - 2013) | | | | 6 | Effect Of Sublethal Concentrations Of Insecticide Dichlorvos On Respiratory Rates Of Snail Lymnaea Accuminata (Lamarck) | | By : A.N. Lonkar | | Abstract : Snails Lymnaea accuminata, were exposed to 1.4 mg/l (1/10thof 96 hrLC50) and 2.8 mg/l(1/5th of 96hr
LC50) of insecticide Dichlorvos. Initially at 24 hours, at both the concentrations Increase in
respiratory rate is noted. At 48 hours stage, increase in respiratory rate is noticed at both the sublethal
concentrations. At 72 hours stage in both the sublethal concentrations reduction in oxygen consumption is noted. At
the end of 96 hours, again in both the concentration decrease in oxygen consumption prevailed. These experimental
snails upon transfer to fresh water for 24 hours, showed recovery in respiratory rate. Respiratory rates are
discussed with respect to sublethal concentration and time of exposure to toxicant Dichlorvos. | | | | Author Profile | Full-Text PDF | |
| | | 7 | Nonverbal Learning Disabilities (Nld) In Theories And Research Findings | | By : Sima Safavi ,Maghsood Faghirpour , Sirouse Salehi ,Rahmatollah Kharazmi Rahimabadi | | Abstract : A particular delay or deviation in motor and perceptual development and language at preschool ages,
eventuates to educational learning disabilities as the child enters to primary school, so developmental skills are the
base of educational learning. For example, it is necessary to have mastery in many of motor skills, motor planning,
the harmony of fingers fine movements and the harmony between hand and eye for learning how to write. (Lerner
2005).The learning of motor skills is one of the various learning that begins at birth and has a special importance in
one's lifetime, and it is propounded in mental-motor stage with considering the changes caused by movement in
learner's behavior.(Sage 2007) | | | | Author Profile | Full-Text PDF | |
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