Showing papers by "A. K. Gupta published in 2008"

Earthquake Swarm Activities after Rains in Peninsular India and a Case Study from Jamnagar

Abstract: About 200 shocks were felt and over 50 of M-2 to 4 were located south of Jamnagar in 2006 and same number was felt/located again in 2007 with blast like subterranean sounds soon after heavy rains Most of the shocks have shallow focal depth of less than 10 km Some of the tremors have caused cracks in a few houses During September-October 2006 tremors were confined withm 5 km of Khankotda village which is about 30 km SE of Jamnagar During August-September 2007 the activity had spread northward up to Jamnagar Some shocks have occurred about 20-25 km west of this trend faults/lineaments/dykes in the area are studied to identify the causative feature for the tremors The rainfall data of the district and water level data of nearby observation wells are studied to see any possible relationship with earthquake activity Data of about hundred cases of swarm type of earthquake sequences in the peninsular India in last several decades are compiled to study their characteristics vis-a-vis monsoons

Antimicrobial and antitumor activity of the fractionated extracts of Kalimusli (Curculigo orchioides)

Abstract: Th e roots of Kalimusli (Curculigo orchioides) were fractionated with diff erent solvents and screened for their antimicrobial and antitumor activity Antifungal activity was screened using agar plate method, and antibacterial activity of the extracts was determined by disk diff usion method Antitumor activity was screened against a human breast cancer cell line (MCF-7) Methanolic extract showed maximum activity due to the saponins present Key words: Amaryllidaceae, antimicrobial and antitumor activity, Curculigo orchioides, Kalimusli, saponins

Feed intake, eating pattern, nutrient digestibility and remun metabolites in sheep and goat fed gross tree leaves diets

Abstract: Two consecutive feeding trials were carried out on 4 adult male animals each of sheep and goat separately on Cenchrus ciliaris-Leucaena leucocephala (CC-LL) and Cenchrus ciliaris-Grewia optiva (CC-GO) diets. Sheep and goats were fed grass and tree leaves in 75:25 and 50:50 ratios (DM basis), respectively, for 2 months and thereafter a digestion trial was conducted on each diet to assess feed intake and nutrients digestibility. Rumen liquor samples were collected separately on both diets at 0 and 4 h post feeding to determine metabolite concentration in rumen of sheep and goat. CP was higher in LL and lower in fibre than GO. DMI was relatively lower in sheep than in goat on CC-LL diet, while on CC-GO diet both species had identical feed intake. Sheep and goat had 9-10 units higher DM and fibre digestibility on CC-GO than CC-LL diet, while species exhibited no difference for DM digestibility on each diet. Goat had higher CP digestibility than sheep on CC-GO diet, however on CC-LL diet such difference was not evident. Eating rate (g/kg WO·75 ) was relatively more in sheep up to 4 and 6 h feeding on both CC-LL and CC-GO diets than in goat. TVFA concentration (meq/l) in rumen liquor of sheep was higher on CC-GO than on CC-LL diet. Total-N (mg/IOO ml) in rumen liquor of sheep was higher in sheep on CC-LL than on CC-GO diet, while values were comparable in goats on both diets. Results indicated that sheep and goats had relatively higher feed intake, nutrients digestibility and TVFA production on CC-GO than on CC-LL diet.