Watersheds using surface water for irrigation often return a portion of the water to a water body. This irrigation return flow often includes sediment and nutrients that reduce the quality of the receiving water body. Research in the 82,000-ha Upper Snake Rock (USR) watershed from 2005 to 2008 showed that, on average, water diverted from the Snake River annually supplied 547 kg ha of total susp...

this study was conducted to investigate the effect of replacing barley with different levels of ground date seeds (gds) in the diet (0, 15, 3o and 45%) on performance of local growing male goats. sixteen local male kids (average live weight 16.1±1.41 kg) were allocated randomly to four treatments (4 animal/treatment). the trial consisted of a 14 day acclimatization period followed by a 60-day m...

sulfuric acid production plants are one of the main sources of sulfur oxides, emission to the atmosphere. in the present study to control sulfur oxides of sulfuric acid plant two methods have been selected. the first method is desulfurization by ammoniac (plant a) and the second one is a combination of the first method and dry scrubbing process with calcium hydroxide as the absorbent material) ...

in this paper the partial and total factors productivities of isfahan province industries are analyzed. the two digit isic yearly data is used for period 1972-1993 . the results shoe that the average partial labor productivity are 6/8 and 2/2 mil. rials which are corresponded to chemical and wood industries, respectively. the average labor productivity of all industries is roughly constant befo...

to determine the coefficients of c1 and c in mitscherlich-bray equation, critical level and fertilizer recommendation for potassium (k) as by mitscherlich-bray (mb) equation, an experiment in a randomized complete block design of 5 treatments and 3 replications was carried out in 12 irrigated wheat (triticum aestivum l.) fields in sarpol-e-zohab region during the 2007-08 growing season. the tre...