This paper reports 13C nuclear magnetic resonance (NMR) analysis of some crackates obtained from asphalt cracking in a micro autoclave under a pool of nitrogen. The cracking was carried out in the presence of Zeolite Socony Mobil #5 (HZSM-5) and locally cheap and readily available clay i.e....

Using data from Pakistan's Punjab, the authors examine monopoly power in the market for groundwater - irrigation water extracted using private tubewells - a market characterized by barriers to entry and spatial fragmentation. Simple theory predicts that tubewell owners should price-discriminate...