The Predictive Role of Preschool Children's Attachment on Social Competence, Anxiety, Aggression and Self-Control: Peer Relationships as a Mediator.

The main purpose of this study is to examine the predictive role of preschool children's attachment on social competence, anxiety, aggression, and self-control of 5-year-old children (60-71 months), and to test the mediating effect of peer relationships in this model. A total of 309 children participated in the study. The data of the study were collected through the teacher checklist of peer relationships, the social competence and behavior evaluation scale-30, the self-control rating scale which the teacher filled out, and the doll story completion task which the researcher used during the application process.

Laboratory-scale characterization of slow-release permanganate gel (SRP-G) for the in-situ treatment of chlorinated-solvent groundwater plumes.

Significant challenges remain for the remediation of chlorinated-solvent plumes in groundwater, such as trichloroethene (TCE) and tetrachloroethene (PCE). A novel slow-release permanganate gel (SRP-G) technique may show promise for the in-situ treatment (remediation) of chlorinated contaminant plumes in groundwater. A series of laboratory experiments were conducted to characterize the primary physical factors that influence SRP-G gelation processes to optimize SRP-G performance for plume treatment.