The Achillea millefolium L.is a perennial herb with important antibacterial, antifungal, anti-inflammatory, antitumoral, and antioxidant properties.This research aimed to investigate the effect of shading (75%; black net) and nitrogen fertilization (0, 75 and 150 kg urea ha-1) on the nitrogen metabolism, essential oil yield and antimicrobial activi
The present paper argues that adhesion forces and elastic deformation in the contact zone may contribute significantly to the relative displacement during fretting of metals.A simultaneously applied tangential force and normal into contact appears a Multi-Axis Bearing Link adhesion force.A tangential force whose magnitude is less equal on greater t
The error from three different surveying techniques- level, hand-held barometer, and hand-held GPS-were compared in terms of accuracy and cost effectiveness for hydrogeological studies by surveying a four-kilometer circuit 1994-2004 within the campus of the Universidad Nacional Autonoma de Mexico.The polygon was surveyed once with the level and the