in this thesis, a better reaction conditions for the synthesis of spirobarbiturates catalyzed by task-specific ionic liquid (2-hydroxy-n-(2-hydroxyethyl)-n,n-dimethylethanaminium formate), calcium hypochlorite ca(ocl)2 or n-bromosuccinimide (nbs) in the presence of water at room temperature by ultrasonic technique is provided. the design and synthesis of spirocycles is a challenging task becaus...

This research was conducted to study relationships among yield and yield components in Orchard grass (Dactylis glomerata). For this purpose 25 half sib families derived from poly cross of 25 parental genotypes were evaluated under two moisture environments (normal and drought conditions) according to a randomized complete block design at the research farm of Isfahan University of Technology. Th...

Drought stress is an important limiting factor for plant growth.  Using selection indices, it is possible to identify cultivars with high yield in normal and stressed conditions.  So, the genetic analysis of drought tolerance indices can play important role in plant breeding programs. In order to identify molecular markers linked with drought tolerance indices in sunflower, 72 recombinant inbre...

Zareh was primarily received as an introduction wheat within the Winter Wheat Observation Nursery for Irrigated Areas (WWON-IR) with pedigree of 130L1.11//F35.70/Mo73/4/Ymh/Tob//Mcd/3/Lira from CIMMYT-Turkey in 2001-02 cropping season. Zareh was tested as C-83-8 in yield trials under normal irrigation and post-anthesis drought stress conditions in cold regions of Iran. It outyielded Shahryar (n...

the treatment of in completely formed pulpless teeth has presented considrable problems. these teeth have wide open apexes and the walls of the root canal diverge toward the apical tissues. mechanical preparation cannot be done in the normal manner beacause of the large initial size and the taper of apical part of the canal , a mechanical stop cannot be produced at the apex of the canal and , t...