Based on starch-iodine agar plate, a novel screening method that can be used to screen for β-lactamase inhibitors from extracts of herbs is established. The extracts of 100 traditional Chinese medicines were screened for βlactamase inhibitors by this method. The inhibition rates of the Rheum palmatum L., Schisandra chinensis (Turcz.) Baill., Hypericum japonicum Thunb., Paederia scandens (Lour.)...

Orange hawkweed is a perennial European plant that has colonized roadsides and grasslands in south-central and southeast Alaska. This plant is forming near-monotypic stands, reducing plant diversity, and decreasing pasture productivity. A replicated greenhouse study was conducted in 2006 and repeated in 2007 to determine the efficacy of six herbicides (aminopyralid, clopyralid, picloram, piclor...

The nutrient balancing hypothesis proposes that, when sufficient food is available, the primary goal of animal diet selection is to obtain a nutritionally balanced diet. This hypothesis can be tested using the Geometric Framework for nutrition (GF). The GF enables researchers to study patterns of nutrient intake (e.g. macronutrients; protein, carbohydrates, fat), interactions between the differ...

Detailed phylogenetic relationships and molecular dating are still quite rare for the complex diverse genus Salix L. Here we focus on taxonomic status phylogeny of twenty-six taxa natu­rally found in Turkey using chloroplast DNA regions (trn T-F, matK, rbcL) to unravel relationship among them. The species was also checked tree constructed with data from Internal Transcribed Spacer (ITS) region ...