gh. kazemi

When the metal is in contact with the soil, there is the possibility of sticking soil to the metal surface. For determining the tension stress for soil separating from metal surface the cone pullout device designed. In this apparatus, a cone penetrates into the soil, stopping it for a specific time and, then, separating from the soil. In the present research, according to previous studies and ideas about this subject, cone pullout test device is designed and manufactured. By performing 90 tests on a montmorillonite clay soil with different values for stope time and separation speed, the effect of these variables was studied. The results showed optimum stope time (t =5 min), and separation speed cone (15 mm /min) was determined. To evaluate the reproducibility of the results, by performing other 60 tests on two other kaolinite clay soils, coefficient of variation (14.49\geqCv\geq1.4) and accuracy index (1.22\geqP\geq1.01) were determined. these values showed which results were reputable and acceptable. Because of the effect of moisture content on the engineering properties of fine-grained soil, the effect of moisture changes on tensile stress for separation of metal from soil was studied. The results of the study showed that with an increase in water content, the tension stress decreased. Accordingly, linear relationships were proposed between soil moisture content and tensile stress for montmorillonite and kaolinite clay soils. Slope of the curve moisture content versus tension stress for montmorillonite clay soil and kaolinite clay soil are 1.25 and 0.82 respectively. Therefore, it can be concluded that the slope of the curve corresponds to the soil type; increasing plastic index increases tension stress.

This study examined the effectiveness of cognitive behavioral therapy on hardiness among victims of domestic violence. The method of the study included quasi-experimental pre-test, post-test with two experimental and control groups, respectively. The sample covers all young couples in Emdad Committee in Ghochan. The sample subjects chosen after the public announcement and call included 91 women who voluntary participated. In the beginning of the experiment, domestic violence screening questionnaire to identify women with the highest rate of domestic violence were conducted.The women who had the highest rate of domestic violence included 37 women randomly put into experimental group (n=19) and control group (n=18).They responded to the questionnaires of hardiness and quality of life and cognitive behavior therapy groupwas conducted for the experimental group and the control group in 8 sessions of 90 minutes without any intervention. The results showed that cognitive behavioral group therapy was effective on the hardiness and quality of life amongfemale victims of domestic violence. Implementation of this intervention is recommended to improve couples’ relationships and the performance of their families because the cognitive behavior therapy was effective and satisfactory on quality of life and family hardiness offemale victims of domestic violence.