II. Polarizing light microscope and geological samples III. Refractive index and its measurement IV. Optical classes-indicatrix theory V. Relationship of optical properties to crystal chemistry VI. Advanced methods in optical mineralogy GLOSSARY anisotropic mineral: A mineral with more than one principal refractive index. birefringence: The mathematical difference between the largest and smalle...

introduction : solubility of root filling materials is heavily influenced by the environment they are in contact with. this study compared the solubility of proroot mta in deionized water and synthetic tissue fluid. materials & methods: forty specimens of prepared mta were immersed in deionized water and synthetic tissue fluid (20 samples each). the solubility was assessed after 7 and 28 days. ...

the aim of this study was to provide preliminary quantitative information on selenium and iodine statusof sheep in markazi province, iran. selenium and iodine status of grazing sheep were measured for 57different flocks in 14 regions over one year. the districts were selected to represent major sheep growingareas in the province. blood samples were collected from 2 to 3-year-old ewes during sum...

This paper analyzes the process of automated negotiation between two competitive agents that have firm deadlines and incomplete information about their opponent. Generally speaking, the outcome of a negotiation depends on many parameters—including the agents’ preferences, their reservation limits, their attitude toward time and the strategies they use. Although in most realistic situations it i...

The present paper deals with the problems regarding the persuasive computational technique. While the notion of persuasion is somewhat conventional in the psychology and pedagogy, the application research in the computing system is relatively young and still establishing its basic tenets. The aim of this research is to examine the persuasive intervention type and to thereby explore the feasible...