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1.
Tilak KS Veeraiah K Sastry LV Rao JV 《Journal of environmental biology / Academy of Environmental Biology, India》2003,24(4):445-448
Indian bullfrog Haplobatrachus tigerinus (Daudin) was exposed to sublethal dose (1/3 of LC50 I.E. 1.166 mg/kg) of fenvalerate technical grade and the effect was studied on the specific activity of acetyl cholinesterase in the different tissues of frog viz., brain, muscle, liver, kidney and testis at different time periods viz., 3,6, 12, 24, 48 and 72 hours. The inhibition of specific activity of acetyl cholinesterase was in the order of kidney > brain > muscle > liver > testis. A significant inhibition was noticed in kidney at 12 hours (-64.33%) and no effect was noticed at 3 hours in testis (+0.67%). The AChE activity was inhibited in first three hours of administration of fenvalerate in all the tissue tested. The inhibition continued upto 6 hours or 2 hours in different tissue but the recovery was started by 24 hours and almost completed by 72 hours. 相似文献
2.
Goudar Naganagouda Vanjeri Vinayak N. Hiremani Vishram D. Gasti Tilak Khanapure Sheela Masti Saraswati P. Chougale Ravindra B. 《Journal of Polymers and the Environment》2022,30(6):2419-2434
Journal of Polymers and the Environment - The novel polyelectrolyte complexes (PEC) were prepared by mixing different Wt% of Tragacanth gum (TG) to Chitosan (CS) and systematic evaluation of... 相似文献
3.
Hiremani Vishram D. Goudar Naganagouda Gasti Tilak Khanapure Sheela Vanjeri Vinayak N. Sataraddi Sarala D’souza Oshin Jacintha Vootla Shyam Kumar Masti Saraswati P. Malabadi Ravindra B. Chougale Ravindra B. 《Journal of Polymers and the Environment》2022,30(4):1314-1329
Journal of Polymers and the Environment - This study explains the development of eco-friendly polyvinyl alcohol (PVA)/oxidized maize starch (OMS)/Betel leaves extract (BLE) blend films by employing... 相似文献
4.
Gasti Tilak Hiremani Vishram D. Kesti Sheetal Suresh Vanjeri Vinayak N. Goudar Naganagouda Masti Saraswati P. Thimmappa Shivasharana Chandrabanda Chougale Ravindra B. 《Journal of Polymers and the Environment》2021,29(10):3347-3363
Journal of Polymers and the Environment - In this study, we prepared Poly (vinyl alcohol) (PVA)/Guar gum (GG) based nanocomposite films with a different weight ratio of silver nanoparticles (AgNPs)... 相似文献
5.
Tilak KS Veeraiah K Susan TA Yacobu K 《Journal of environmental biology / Academy of Environmental Biology, India》2001,22(3):177-180
The toxicity test of fenvalerate were conducted to fresh water fishes Labeo rohita (Hamilton), Catla catla (Hamilton), Cirrhinus mrigala (Hamilton), Aplocheilus punchex (Hamilton) and Ctenopharygodon idellus (Valenciennes). The static and continuous flow through tests were employed to determine the lethal concentration (LC50) for 24h, 48h and 96h to the test fish. It was observed that Cirrhinus mrigala is more sensitive to this pesticide followed by Applochielus punchex, Lebeo rohita, Catla catla and Ctenopharyngodon idellus. The residue analysis for qualitative confirmation was done by thin layer chromatography (TLC) to assess the deposition of pesticide in different tissues of fishes. The quantitative study of accumulation in the whole body tissue was done by Gas liquid chromatography (GLC). The quantitative residues confirm the toxic action. 相似文献
6.
Tilak KS Lakshmi SJ Susan TA 《Journal of environmental biology / Academy of Environmental Biology, India》2002,23(2):147-149
The acute toxicity of unionized ammonia; nitrite and nitrate to the Indian major carp Catla catla (Hamilton) was determined using static and continuous flow through systems for 24 hours. The median lethal concentration (LC50) values for 24 h of ammonia (NH3-N), nitrite (NO2-N) and nitrate (NO3-N) were 0.045 mg/l, 120.84 mg/l and 1565.43 mg/l in static test respectively and were 0.036 mg/l, 117.43 mg/l and 1484.08 mg/l in continuous flow through test respectively. 相似文献
7.
Tilak KS Veeraiah K Rao DK 《Journal of environmental biology / Academy of Environmental Biology, India》2005,26(1):73-77
The freshwater fish Catla catla, Labeo rohita and Cirrhinus mrigala are exposed to the toxicant chlorpyrifos, an organo phosphate commonly used in agriculture as well as in aquaculture. The effect was studied on the enzyme acetyl cholinesterase activity which was inhibited in the selected tissues of the fish. In different tissues and in brain, the maximum inhibition was observed. 相似文献
8.
Tilak KS Veeraiah K Raju JM 《Journal of environmental biology / Academy of Environmental Biology, India》2007,28(1):45-47
Lethal effects of nitrogenous compounds ammonia, nitrite and nitrate on freshwater fish Cyprinus carpio were studied and the static LC50 values obtained for these 3 toxicants for 24 hr were 0.80 ppb, 171.36 ppm; 1075.10 ppm and continuous flowthrough LC50 values for 24 hr were 0.72 ppb, 154.31 ppm; 967.63 ppm respectively. The fish were exposed to lethal concentrations to study the changes in hematological parameters and the rate of oxygen consumption. During the period of exposure general decline in the content of hemoglobin was observed. Methemoglobin content increased in case of nitrite exposure consequently the hemoglobin levels decreased drastically. It is also observed that rate of oxygen consumption decreased progressively with the increase of toxicant concentration and duration of the exposure. 相似文献
9.
Tilak KS Veeraiah K Butchiram MS 《Journal of environmental biology / Academy of Environmental Biology, India》2007,28(2):177-179
The effect of phenol on haematological components of Indian major carps, Catla catla, Labeo rohita and Cirrhinus mrigala were observed. After exposure to sublethal concentrations of 5.17 mg l(-1), 6.06 mg l(-1) and 6.99 mg l(-1), the number of red blood cells, haemoglobin content and packed cell volume all decreased but the glucose level increased. The order of decrease in the haematological components of the three fish is in the order of Catla catla > Labeo rohita > Cirrhinus mrigala. 相似文献
10.
Gayan Lakendra Gunaratne Norio Tanak Prasanna Amarasekar Tilak Priyadarshan Jagath Manatunge 《环境科学学报(英文版)》2010,22(6):813-819
Groyne system modification is described related to restoration e orts to Koggala lagoon, Sri Lanka.The large-scale unplanned sand
removal at the lagoon mouth shifted the formation of sand bar towards the lagoon and made adverse e ects on its ecosystem. After the
removal of the natural sand bar, groyne system was constructed to avoid sand deposition in the lagoon and to protect the highway bridge
(across the lagoon outlet channel) from the wave attack. The existing groyne system resulted the lagoon mouth being permanently open
to sea which in turn led to many environmental problems. Groyne system modification is proposed in this study to reduce the sea water
intrusion.Water budget and two-dimensional depth averaged hydrodynamic model were developed for understanding the hydrologic
and flow characteristics of the lagoon. Numerical experiments was performed at lagoon mouth area for two cases: (1) existing condition
and (2) proposed rubble mound groyne system condition. Comparison of results was obtained for both cases to describe flow pattern at
lagoon mouth. Results further showed, the width should be reduced to a maximum of 40 m. Proposed mouth width (40 m) pushed the
salting factor towards 0.5 from 0.68. Salting factor reduction with the groyne modification may result a predominant influence of fresh
water which may in turn lead lagoon to a fresh water ecosystem. 相似文献