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...

Grain quality in rice is one of the main determinants of marketability and product sales. The aim of this study was to investigate the quality of different rice genotypes in different environments and to identify the genotypes with desirable quality. In this trial, qualitative characteristics of 16 rice genotypes, six introduced lines, 8 parental genotypes and 2 genotypes as control in Amol and...

the present study aimed at investigating the relationship between iranian efl teachers’ classroom management orientations and their teaching styles. additionally, the difference between male and female teachers’ teaching styles and classroom management orientations and their relationship with experience and age were explored. three hundred efl teachers filled in attitudes and beliefs on classro...

the poor orientation of the restaurants toward the information technology has yet many unsolved issues in regards to the customers. one of these problems which lead the appeal list of later, and have a negative impact on the prestige of the restaurant is the case when the later does not respond on time to the customers’ needs, and which causes their dissatisfaction. this issue is really sensiti...

this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...

In order to decrease effect of genotype × environment interaction, yield and yield stability should be considered simultaneously. In present study, 24 bread wheat genotypes were evaluated in Gorgan and Gonbad agricultural stations in 2012-13 and 2013-14 cropping seasons. Experiments were conducted based on complete block designs with three replications at 6th December and February. Combined ana...