pure azo schiff bases were readily and conveniently accessible in high yields by mixing of the reagents either as aqueous slurry, or by grinding at room temperature. this method, unlike a classical method, needs neither harsh conditions nor organic solvents. the satisfactory results were obtained with excellent yields, short reaction time, and operational simplicity in the experimental procedur...

social capital is a concept which has attracted the attention of scientists in various fields including management in recent years. the literature on social capital concept has several dimensions and indicators and their relation with many other variables has been studied. the important point is that although the dimensions and indicators can be analyzed separately, they are not isolated and th...

An efficient sodium bismuthate (NaBiO3) synthesis of biologically active spiro[4H-pyran]derivatives has been accomplished via one-pot three-condensation of isatin/acenaphthequinone, malononitrile and different reagents including 1,3-dicrbonyl compounds, α-naphthol and 4-hydroxycumarin under solvent-free conditions. The notable advantages of the present procedure are: eco-friendly, environmental...

housing can be considered as one of the most important needs of each family and the provision ofsuitable housing for people has always been considered as one of the indicators of progress in any country. because ofthe specific attitude to the issue of housing in iran, in other words, turning it into an investment, the major part of thehouseholds' income has been accounted for housing. given the...

housing can be considered as one of the most important needs of each family and the provision ofsuitable housing for people has always been considered as one of the indicators of progress in any country. because ofthe specific attitude to the issue of housing in iran, in other words, turning it into an investment, the major part of thehouseholds' income has been accounted for housing. give...