ISSN: 1813-0410

Keywords : EMMC


Laboratory Studying of the Fecundity Schedules for Neochetina bruchi (Hustache) [Coleoptera : Curculionidae] under the Lab . conditions and the Possibilities of its Use Against Waterhyacinth in Iraq .

journal of kerbala university, Volume 7, Issue 4, Pages 10-16

Fecundity schedules results of Neochetina bruchi ( Hustache ) indicated that the highest reproductive rate was 132.2 eggs / female at 25 °C while it was 106.4 and 110.8 eggs / female at 20 and 30 °C successively and expectant reproductive was 29.27,50.23 and41.73 eggs at 20 ,25 and 30 °C successively .while the temperatures 15 and 35°C were appeared to be lethal. Furthermore ,the results also showed that the highest net reproductive rate ( Ro ) was 50.23 female /female / generation at 25 °C while it was 29.27 and 41.73 female /female / generation at 20 and 30 °C, moreover the highest mean generation time ( T ) was 80.84 days at 20 °C while the lowest mean generation time ( T ) was 98.30 days at 25 °C. Results also revealed that the highest rate of intrinsic increase in population ( rm ) was 0.046 female / female /day at 30 °C while it was 0.034 and 0.045 female / female /day at 20 and 25 °C successively

Oxidation of Ni – Al Electrodeposited Composite Coating of Inconel 600 Alloys

Newal Mohammed; Ali Hubi Haleem; Jaleel Kareem Ahmed

journal of kerbala university, Volume 4, Issue 3, Pages 129-140

The oxidation behavior of nickel matrix/ aluminum particle composite coatings in air at (600-800°C) for 25 hrs. was studied. The composite coatings were applied to Inconel 600 alloy by the electrodeposition technique and heat treated under argon atmosphere for three hours at 800 °C prior to oxidation testing. During heat treatment, coating morphological development was found to occur by the exothermic reaction Ni +Al = NiAl. For all samples, weight gain kinetics was obtained from furnace exposure and the composition and morphology of the oxidation products were examined using XRD analysis and light optical microscopy. An outer Al2O3 layer was formed on the composite coating surface. At test temperatures such as 800 °C, the coatings benefits from a small grain size that enhances Al diffusion to the surface to form the protective alumina layer.