The purpose of this work was to production of ceramic thin films by using of Sol-Gel process. For this purpose deposition of Si02 on substrates of soda-lime glasses has been carried out. Coating treatments on prepared specimen were conducted in a Sol Solution by means of dipping at various times. After drying and performing appropriate heat treatment on each sample, the thickness of coated layer was measured by means of roughness method Some of the specimens were also exposed to heat and chemical environment to evaluate the coating resistance in such media. SEM examination and EDAX and XRD analysis of coating layers was also conducted on some samples. The results indicated that by Sol-Gel method, it is easily possible to achieve thin layers in the scale of one-hundredth micron meter. Any change of the thickness layer on the surface is negligible and the quality of the coating is excellent. Also, experiments indicated that deposited coatings by Sol-Gel process, are stable and give enough durability in various environments.

Salvia bracteata is a permanent herb belongs to Lamiaceae family which wildely grows in some regions of Lorestan province. The aerial part of this plant was collected in postflowering stage from montains of North of Alashtar in Lorestan province. The air-dried samples were subjected to hydrodistillation using by Cleavenger apparatus for 2.5h ( in yield of 0.8%).The essential oil was analyzed by GC and GC/MS. Forty-six constituents representing 91.7% of the oil were identified. The major components of the oil were a- pinene (31.9%), myrcene(8.6%), limonene(8.1%), b-pinene(6.8%).

Introduction: Dimensional changes in acrylic patterns during laboratory process to fabricate casting are an important issue which could lead to many clinical consequences. Microleakage, lack of retention and fitness are few of problems which could be predicted in the case of dimensional changes in acrylic patterns. So, investigating the factors which could minimize the dimensional change is necessary. This study compares how different proportions of silica-Sol and distilled water affect the dimensional changes in castings.Methods: This study was an experimental study wherein 30 specimens of acrylic patterns (Duralay) with similar dimensions were prepared and equally divided in five different groups and studied. Using extensiometer digital machine, the acrylic patterns were measured at three portions (length, coronal diameter and apical diameter) with accuracy of 10 microns.Results: 1- The mean average of casting post length compared to changed acrylic patterns was statistically significant in pure distilled water group only.2- The mean average of changes in casting coronal diameter did not demonstrate any significant differences compared to acrylic patterns.3- The mean average of changes in casting post apical diameter compared to acrylic patterns using pure distilled water was significant.Conclusion: Because the least value in dimensional change was seen in 2/1, 3/1 ratio of silica-Sol and distilled water, these ratios are recommended in fabrication of casting posts in order to have maximum accuracy and minimum micro leakage while building crowns and bridges.

This article deals with a tradition in Lorestan province, related to incident in a fight when it leads to physical disability or homicide. In this case, both sides agree to repudiate confrontation and brawl by exchanging money or goods or girls. This tradition and practice is called xi Sol (blood peace) or xun bas (renouncing gore). The article starts with a brief look at the geography of the region, different residing clans and the ethnic combination, through which the historical and geographical boundary of xi Sol is defined. Subsequently the overall form and causes of local confrontations and disputes in the tribal context is scrutinized. The assumption presented in this article is that the codes and the way in which xi Sol is carried out can be explained through headmen mediatorship. After explaining the expressions, proverbs, the goods and money exchanged in this traditional practice, the focal point of this article, is the exchange of young women and the terms and conditions of their marriage.