beyond its quantity, natural light has unique properties used intelligently in iranian historical architecture in order to transfer spiritual concepts. religious buildings are a good context for re-reading of light concept. due to its valuable place in iranian-islamic belief as well as its direct relationship with wisdom and philosophy, the qualitative presence of light in architecture, aimed a...

in the current iranian poultry industry, antibiotics are the most frequently used additive in feeds to increase the productivity. regarding the negative effects on human health due to consuming chicken whose feeds contain antibiotics, finding an appropriate alternative is of a great importance. this study aims to find an appropriate and harmless feed additive to increase the quality and quantit...

to evaluate the effects of phosphorous, iron and zinc fertilizers on quantity and quality of turnip, a field experiment was conducted in 2009. the experiment treatments arranged as split plot factorial based on a completley randomized design with 4 replications in the research farm of the university of tehran (karaj-iran). the main factor including three levels of phosphorous (super phosphate t...

to determinate the most proper n.p.k. fertilizer level  for increasing the quality and quantity of polygerm seeds of sugar beet , an experiment was conducted in randomized complete block design with three replications in 1998-2000 at research farm of faculty of agriculture, azad university of ardabil (hassan barog). fertilizer treatments were: n30p60k60, n90p90k90, n0p0k0, n90p150k150, n90p120k...

sustainable agriculture for producing food is not possible without optimal use of water resources. because of the limitation of water resources, deficit irrigation would be essential to increase water productivity. in order to evaluate the effects of deficit irrigation on quality and quantity of sugar beet, an experiment was carried out in a farm in miandoab agricultural research station for 2 ...

Field experiment had been done Research and Production Station, National Research Centre, Nubaria location, to study the effect of cobalt on growth, seeds yield, oil yield and oil fatty acids constituents. The experiment containing 13 plots area were 15 m (5 X 3) containing 3 rows each, planted with 10 plants. The seedlings (at the third truly leaf) were irrigated with cobalt sulphate once with...