Background: Behavioral disorders create many personal and social problems. Children with such disorders encounter families and the community with various issues and difficulties, and make them vulnerable to psychosocial disorders in their adolescence and even long into their adulthood. The purpose of this study was to investigate the effect of play therapy on reducing the behavioral problems of preschool boys. Method: For this purpose, 20 children aged 3 to 6 years with behavioral problems were selected through available sampling, and were next randomly divided into two 10-people groups of experimental and control groups. The tool used in this research was Rutter's Child Behavioral Questionnaire (Form B). Participants were asked to participate in 12 play therapy sessions. Data were analyzed by covariance test. Results: The findings revealed that the mean scores of behavioral problems in the experimental group had a significant decrease in the post-test stage compared to the control group (P <0.05). The findings of the study indicate the effectiveness of group play therapy on reducing the behavioral complications of preschool children. This decrease was evident in both the total score and the subscales of children's Rutter behavioral questionnaire (aggression and hyperactivity, anxiety and depression, social incompatibility, antisocial behaviors, attention deficit). Conclusion: Given the reduction of behavioral problems in preschool children, the role of group plays as one of the strategies for treatment of behavioral disorders in children should be considered.

(DELETED ARTICLE)71 Orthoptera species belonging to 50 genera and four families were identified in various landscapes in Kashkadarya region. 31 species were recorded in natural landscapes and 40 species in agrocoenoses.(DELETED ARTICLE)

This survey was done for localization and determination of sewing machine performance on air-cured tobacco and also determination the percent of labor saving in comparison with traditional stringing method. This test was with factorial experiment in a completely randomized design in 3 replication and 13 treatments. This study was done with air-cured tobacco cultivation in a 2000 m2 plot and all of the planting to harvesting steps was done according to tradition. After harvesting in different picks tobacco leaves was stringing with two methods: machine and traditional stringing. Number of Labor, stringing time, total costs, leaves loss ratio, strings number in day and price were calculated. Sewing machine treatment with 70–75 leaves, sewing the center of stem and stringing one day after harvesting was the best treatment. Using of sewing machine reduced number of labor (88% in hectare) and increased number of tobacco containing strings (78% per day).