this research was carried out in the research field of aboureyhan campus, university of tehran during 2006-07 growing season to investigate the effect of sinapis arvensis l. interference on yield and growth indexes of different canola (brassica napus l.) varieties. the experimental design was a complete randomized block arrangement in factorial with three replications. eight canola varieties na...

in this study, geometrical, gravimetrical and frictional properties of four common varieties of iranian canola seeds (namely: slm, hyola, okapi, orient), containing the mean moisture value of 6.5% (w.b.) were investigated. geometrical and gravimetrical properties included length, diameter, geometric mean diameter, sphericity, thousand seed mass, volume, true density, bulk density and porosity. ...

“I’m sure that thing had stripes when we saw it at the procession”, said apprentice sculptor, cocking his head to better examine animal before him. “What? Listen, just do your job and sculpt what you see, will you?”, replied impatient boss. “No one is paying look for stripes! If don’t get this commission done in time there’ll be hell pay! So chisel cracking!” Some 2500 years later, stone bas-re...

Successful information retrieval requires effective matching between the user’s search request and the contents of relevant documents. Often the request entered by a user may not use the same topic relevant terms as the authors’ of the documents. One potential approach to address problems of query-document term mismatch is document expansion to include additional topically relevant indexing ter...