نتایج جستجو برای: effective air
تعداد نتایج: 878422 فیلتر نتایج به سال:
abstract by using cross-section data which gathered through a survey research in mashhad ,contingent valuation approach and tobit model this study tries to determine economical value of air pollution and effective factors on wtp. based on contingent valuation approach, air pollution total value of airpollution in high-polluted region equals 7134146560 rials per month and in middle-polluted regi...
Introduction: Hospitals, as one of the important elements in the health system, play an important role in patient’s health. Fungi are one of the effective parameters on indoor air quality. This study aimed to compare of fungal contamination of two hospitals in Shiraz City. Materials and Methods: Sampling was conducted based on NIOSH 0800 standard (1.5 meters above the ground level with one sta...
Effectively removal of air pollutants using adsorbents is one the most important methods to purify air. In this work, we proposed for first time that PtN 3 -CNT an effective adsorbent purification. Its purification performance was studied by calculating adsorption behaviors and electronic structures 12 gas molecules, including main components (N 2 , O H O, CO ) common (NO, NO SO CO, NH S), on s...
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