1. It confirms a 1986 conjecture of H̊astad (also raised by and discussed by many others) that the polynomial hierarchy is infinite with respect to a random oracle. (We’ve already had strong reasons to believe H̊astad’s conjecture, since Book showed in 1994 that it’s true unless the polynomial hierarchy collapses.) The prior best result was by O’Donnell and Wimmer in 2007, who showed that Σ3 6⊆ Σ...

Man and animals are frequently coming into conflicts over habitat and food requirements and this is mainly due to expanding human population and loss of natural habitats. The problem has been identified as major challenge to the governments of many countries and is significant to many human communities. Forest villages are the most potent sites for this problem as these are the places where hum...

Results Out of 274 stool samples, multiplex PCR assay of 61 microscopy positive samples showing cyst and/ trophozoite stage of Entamoeba, revealed a higher prevalence of E. moshkovskii (12.8%; 95% CI= 9.30, 17.28) and lower prevalence of E. dispar (6.2%; 95% CI=3.85, 9.77) compared to E. histolytica (8.1%; 95% CI= 5.31, 11.91; p< 0.05). Of the 61 samples that were microscopically positive, 5 we...

Objective: Enteric parasites are a major cause of diarrhoea in HIV-infected people. The present study was undertaken to detect enteric parasites in HIV-infected patients with diarrhoea at different levels of immunity. Methods: The study was carried out at the ART centre Silchar Medical College and Hospital, Assam, India, between March 2013 and March 2014 among consecutively enrolled 127 HIV-inf...

Homegardens are traditional agroforestry systems with complex structure and multiple functions. To understand the system, the socio-economic and biophysical aspects of homegardens in Dorgakona village, Barak Valley, North East India were studied. Since homegardens are also important sites for in situ on-farm conservation, the role of the rural people in the management and preservation of biodiv...