K. Khan

Fracture toughness is a strength parameter in terms of ease of initiation and propagation of a preexisting crack subjected to some externally applied stress field. Due to high cost involved in field scale testing, laboratory based testing under reservoir simulated conditions of …

In 1988, a full-sib recurrent selection program for improved cold tolerance was initiated in three Pakistan-based maize (Zea mays L.) populations, SU, CO, and SC. Selection was based primarily on percent emergence under controlled growth-chamber (11 ± 1/6 ± 1°C day/night) temper…