نتایج جستجو برای: sanitary quality
تعداد نتایج: 757925 فیلتر نتایج به سال:
Until recently, few water utilities or researchers were aware of possible virus presence in deep aquifers and wells. During 2008 and 2009 we collected a time series of virus samples from six deep municipal water-supply wells. The wells range in depth from approximately 220 to 300 m and draw water from a sandstone aquifer. Three of these wells draw water from beneath a regional aquitard, and thr...
rivers and runoff have always been of interest to human beings. in order to make use of the proper water resources, human societies, industrial and agricultural centers, etc. have usually been established near rivers. as the time goes on, these societies developed, and therefore water resources were extracted more and more. consequently, conditions of water quality of the rivers experienced rap...
The scope of this study was to analyze how the International Sanitary Regulation (ISR 2005)has been incorporated into the Brazilian legal-administrative system, in relation to sanitary control measures involving freight, means of transportation and travelers and possible alterations to health surveillance activities, competencies and procedures. This case study has been undertaken using a quali...
even though, to date, a lot of studies have been conducted on the subject of politeness theory, there are very few studies regarding the applicability of this theory to translation between english and persian which shows the reason behind conducting the present study. this study was carried out with the aim of highlighting whether there is any difference between english and persian methods of u...
j I AM anxious to bring to professional notice a remarkable ^ instance of the seemingly mysterious generation of fever and cholera in certain localities, the present case being one in which these two scourges have chosen, what I maintain to be, one of their most favorite breeding dens. Ir. is not the ruined, weed-covered, and slimy tank, nor the foul looking pond put to foul uses and surrounded...
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