abstract nowadays, industries cannot play a crucial role in national and international competitions. the tourism industry is no exception. tourism industry development as the most important economic sector and income generation is one of the key challenges of economic development in the world. therefore, countries were successful that take advantage of the capabilities of tourism sector using ...

This article includes information about confrontational disorder (ODD), Conduct disorder (CD) and premature forms of antisocial behavior. Changes, developmental stability and the inner correlation between them and also effective intervention treatment for each of these conditions are analyzed and some suggestions have been offered for future researches.

determination of uranium in natural water and complex solutions using ion exchange chromatography: a combined procedure using ion exchange chromatography and uv-vis spectrophotometry techniques has been developed to measure uranum in natural water and complex solutions. after conditicing , one hundred milli liters of sample solutions have been passed through an ion exchange column,pachked with ...

Salafi-Takfiri groups, as one of the most prominent intellectual branches of Islamic history, have always faced the Muslim world with a lot of tribulations and problems and by the vicissitudinouses, they have survived so far. Today, given the weakening and decreasing of the power of the Salafi-Takfiri groups, especially ISIS, in Iraq and Syria, which have entered into conflict in the midst of A...

writing as a productive skill requires practice in the basic sub-skills of vocabulary and grammar. in fact, grammar has been viewed as the core of programs in writing classes to help the students put the elements of sentence together and combine sentences of specific lengths to come up with an error-free work of art. conceptualizing l2 writing in this way introduces writing as a product and enc...

abstract amino acids are building blocks of proteins, and play a vital role in living beings existence and their functionality. the interaction of these compounds with metal ions is of great importance to biochemists, and chemists, because their functions can be utilized as a model in understanding enzymes mechanism for transport of metal ions to tissues. among twenty essential amino acids w...