Water stress and soil nutrients affect the growth of medicinal herbs as well as the quantity and quality of their essential oils. The effect of drought stress and different fertilizers on yield and morphological traits of Ajowan was studied in a split-plot experiment on the basis of a Randomized Complete Block Design with three replications in Qaen, Iran. The main plot was devoted to irrigation...

The article presents the influence of thermo-chemical treatment Al2O3 layers on their tribological properties. were produced EN AW-5251 aluminium alloy by means direct current anodizing in a three-component electrolyte. For sake comparison, some samples thermochemically treated three liquids (sodium sulphate solution, sodium dichromate distilled water). parameters production and selected basis ...