Biofuels from Australian biomass

The data comprises experimental results relating to the characterization of biomass.

Water in the Indic Traditions

The essay critically discusses the predominant role played by water in the lives of people from Vedic times to the present day, in the Hindu world. A number of ceremonies both happy or auspicious-making and secular have been associated with water. Several hymns of the Vedas, Brāhmanas, Mahābhārata, Āgamic and Purānic texts are drawn upon to bring out the legends and myths, and genuine beliefs, connected with water that underscore the sacred and profane, purificatory, healing and resuscitating dimensions of water. The essay treats readers to many ancient motifs concerning the pervasive value and utility of water. These comprise, variously, sacrifice, fertility rites, water-medium birth, divine metamorphosis, self-conceiving cosmic birth, totemism life-cycle rites, sanctifications, consecration and installation of icons and edifices, food rituals, monsoon rites, to pacifications, possession and exorcism, death, after-life and rebirth rituals. Reference is also made to the ecology of water resources, the economy of water scarcity, ‘war-wars’ or water imperialism, and water justice in the socio-political arenas of post independent India, in a rapidly liberalising and globalising world. In that regard practical applications of the knowledge-base are explored through the work of NGOs and Water Swamis in the subcontinent.

Estimation of accumulated lethality under pressure-assisted thermal processing

A study was conducted to develop an integrated process lethality model for pressure-assisted thermal processing (PATP) taking into consideration the lethal contribution of both pressure and heat on spore inactivation. Assuming that the momentary inactivation rate was dependent on the survival ratio and momentary pressure-thermal history, a differential equation was formulated and numerically solved using the Runge-Kutta method. Published data on combined pressure-heat inactivation of Bacillus amyloliquefaciens spores were used to obtain model kinetic parameters that considered both pressure and thermal effects. The model was experimentally validated under several process scenarios using a pilot-scale high-pressure food processor. Using first-order kinetics in the model resulted in the overestimation of log reduction compared to the experimental values. When the n th-order kinetics was used, the computed accumulated lethality and the log reduction values were found to be in reasonable agreement with the experimental data. Within the experimental conditions studied, spatial variation in process temperature resulted up to 3.5 log variation in survivors between the top and bottom of the carrier basket. The predicted log reduction of B. amyloliquefaciens spores in deionized water and carrot purée had satisfactory accuracy (1.07-1.12) and regression coefficients (0.83-0.92). The model was also able to predict log reductions obtained during a double-pulse treatment conducted using a pilot-scale high-pressure processor. The developed model can be a useful tool to examine the effect of combined pressure-thermal treatment on bacterial spore lethality and assess PATP microbial safety. © 2013 Springer Science+Business Media New York.