رودخانه­ها به دلیل اینکه با محیط اطراف خود در ارتباط هستند دچار نوسانات کیفی می­شوند  لذا بررسی تغییرات کیفیت آن­ها حائز اهمیت است. هدف از پژوهش حاضر، بررسی رابطه­ی بین تغییرات پارامترهای کیفی مختلف و تاثیر این تغییرات بر میزان کل جامدات محلول در آب می­باشد. برای این منظور از تحلیل رگرسیونی چند متغیره و اطلاعات کیفی 26 ساله رودخانه کشکان استفاده شد. نتایج نشان داد که از بین تمام پارامترها EC,Ca...

Yazd – Ardakan Plain located at the Iranian Center.Most of the population in Yazd Province located at the this plain So Temporal and spatial Groundwater Quality is necessary to study.In order to study groundwater quality variations we drew on the Thirty groundwater samples fromYazd Regional Water Authority related to Yazd Ardakan plain 2002-2010 using Simple Kriging were collected and analyzed ...

after the soviet union dissolution, a chaotic period was begun in the russia. russia lost its glory and felt disgrace. the first group of elites came to power under yeltsin; they tried to re-define russia’s identity as a european country and build a foreign policy on this baseline. therefore russia tried to become closer with the west especially with the u.s. according to their view the sovie...

abstract following innovations in the field of elt, a new topic which has recently attracted a lot of attention is metaphor analysis. although this area of research is still in its infancy in elt, it seems that the idea can shed more light on the puzzle of english language learning and teaching. therefore, the major aim of this study is to analyze language learning and teaching in formal a...

if the precise implementation of the principle of proportion and:balance between the violation and the penalty as well as the other dimensions could be considered as a stick yard for the imptementation of justice any lack of preciseness in carrying out such principle would not indeed be much too far from injustice . naturally ,if it would be imagined that the objective of balance between...

Background and Objective: The role of groundwater has always been an important issue in order to provide drinking water especially in desert areas. However, studies and decision-making on water supply from the water source is more costly and difficult rather than surface water. Therefore, it is important to note the newest methods like zoning. Due to the effects of water chemical parameters on ...