نتایج جستجو برای: background concentrations
تعداد نتایج: 1108431 فیلتر نتایج به سال:
the aim of this research paper is the introduction of a novel mathematical approach to improvethe accuracy of the results of air pollution dispersion models based on the calibration of input backgroundconcentrations. using the dunkirk area of the city of nottingham in the uk as a case study, an air pollutionmodel in adms-roads was created for developing the mathematical approach. the iterative ...
the aim of this research paper is the introduction of a novel mathematical approach to improvethe accuracy of the results of air pollution dispersion models based on the calibration of input backgroundconcentrations. using the dunkirk area of the city of nottingham in the uk as a case study, an air pollutionmodel in adms-roads was created for developing the mathematical approach. the iterative ...
abstract poor reading comprehension can result in failure in using references, benefiting from professional gatherings and resources, keeping up with the growing body of knowledge in the virtual world of the internet, and failing to achieve in efl programs. the purpose of the present quasi-experimental study was to explore the effects of background knowledge and previewing narrative and expos...
While radioisotopes of noble gases are known to be indicators underground nuclear explosions (UNE), McIntyre et al. (2017) was the first report presence 39Ar in shallow soil gas association with a decades old UNE. this finding hinted at potential application used as an indicator UNE, doing so would also require understanding natural concentrations present gas. Without knowing expected range and...
this studyinvestigated therelations between examinees’ academic knowledge and theirperformanceonreading section of ielts and toefl (ibt) through using generalizabilitytheory. g-theory was utilized to investigate the effects of subtest, test items, participants and academic background on the reliability of ielts and toefl (ibt) score. tosamplethe subjectsofthissurvey,a placement testwasadministe...
this thesis attempts to investigate the effects of prelistening activities on enhancing iranian efl learners` listening comprehension. the present study investigated ways in which learners` background knowledge could be activated in order to enhance their l2 listening comprehension by limiting the number of possible text interpretations prior to listening. the experiments conducted in this stud...
The materials of the study: background concentrations mercury dissolved in water and precipitated bottom sediments 95 lakes. Methods: a total 332 samples lake 37 were collected during ecological monitoring petroleum deposit areas between 2007–2011. Results: mean concentration had values 0.046±0.012 mg/kg 0.025±0.014 waters, respectively. highest Hg found eluvial transeluvial positions, lowest –...
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