abstract stachys is one of the largest genera in the flowering plant family. it is in the subfamily lamioideae (labiatae), spreading and growing in different parts of iran. the purpose of this study was to investigate the chemical properties of stachyslavandulifolia as well as the essence, ethanol and methanol extracts of this plant. it was collected from chulus located in the west of mazandara...

This paper investigates the engaging concept of virtual 3D jigsaw puzzles to foster the understanding of spatial relations within technical or biological systems by means of virtual models. Employing an application in anatomy education, it answers the question: How does guided spatial exploration, arising while composing a 3D jigsaw, affect the acquisition of spatial-functional understanding in...

In this paper we describe computer-supported structured cooperative learning, applied to the laboratories of an introductory CS1 course. We extended IMINDS, a multiagent system that supports student-teacher and student-student realtime interactions, to support a cooperative learning paradigm called Jigsaw. Jigsaw considers of several phases of activities, including dividing students into differ...

Background: It is essential to keep the reproductive organs and surrounding areas hygienic during menstruation to prevent health issues. Inadequate menstrual self-care knowledge, poor attitudes, and behavior among female adolescents can lead to increased morbidity and other complications among them, such as reproductive tract infections. Aim: This study a...

oday almost all organizations use the Internet extensively for both intraand inter-organizational communications. The Internet is also the exclusive vehicle for E-commerce transactions involving customers and other business partners. This eliminates the significant infrastructure costs of private data communications networks and enables even small companies to participate in E-commerce. However...