Field experiments were conducted to study weed population shifts in long-term conservation tillage systems. The objectives of this study were to determine weed community abundance, diversity and composition on conventional tillage (CT), minimum tillage (MT), no-tillage with paraplow (ZT) and no-tillage (NT) systems, and to identify species that are associated with specific tillage systems. The ...

Experiencer or psych verbs are a notorious problem for the interface between lexical semantics and syntax (e.g., Grimshaw 1990, Pesetsky 1995). This paper shows that the consideration of discourse structure sheds new light on the data observed in the literature. In particular, this paper follows Asher and Lascarides’ (1995, 2003) and Asher and Pustejovsky’s (2000) ideas on the close interaction...

Catalytic hydrotreating is an attractive method for upgrading bio-derived oils into renewable feedstocks with less oxygen content, suitable for producing valuable hydrocarbons through various petro-refinery processes. This study evaluates the catalytic activity of a commercial alumina (Al2O3) supported NiMo catalyst for hydrotreating tall oil feeds such as crude tall oil (CTO), distilled tall o...