Abstract The use of chemical methods weed control is an effective means control. However, the large amounts herbicides leads to environmental pollution, contaminates food, and adversely affects health people working with herbicides. safest method mechanically remove weeds by pulling rooted out soil or cutting driving under soil. Robots pneumatic, hydraulic, electrical systems cutters. Electrica...

BACKGROUND Most ulcers are caused, one can deduce, by Helicobacter pylori or by use of non-steroidal anti-inflammatory drugs (NSAIDs). Whether both together are worse than one alone is something that is quite unknown. AIM To study both factors in order to see wither they interact together positively. METHOD A case control study of ulcer bleeding in elderly patients chosen without weeding. ...

This research suggests a method for query expansion on Arabic Information Retrieval using Expectation Maximization (EM). We employ the EM algorithm in the process of selecting relevant terms for expanding the query and weeding out the non-related terms. We tested our algorithm on INFILE test collection of CLLEF2009, and the experiments show that query expansion that considers similarity of term...

Abstract Oil palm is the most productive oil crop, but its high productivity associated with conventional management (that is, fertilization rates and herbicide application), causing deleterious environmental impacts. Using a 2 factorial experiment, we assessed effects of vs reduced (equal to nutrients removed by fruit harvest) mechanical weeding on ecosystem functions, biodiversity profitabili...

We studied the effects of three soil management approaches (permanent grassing, chemical weeding, and buffer strips), additional impact tractor passage on erosion in a sloping vineyard located inner part Aosta Valley (N-W Italian Alps). The rows were equipped with sediment collection system channels barrel tanks. A total 12 events production observed across 6 years, collected sediments weighted...