نتایج جستجو برای: ratios
تعداد نتایج: 123338 فیلتر نتایج به سال:
Journal:
:international journal of environmental research
0
suspended particles with aerodynamic diameters not greater than 2.5 μm (pm2.5) were sampledat the urban background, regional background and urban traffic points in southern poland. in total, 120 sampleswere collected between 2nd august 2009 and 27th december 2010. 16 polycyclic aromatic hydrocarbons (pahs)and organic carbon (oc) were determined in each sample. the samples were collected with a ...
Journal:
:Archives of Pediatrics & Adolescent Medicine
2009
Journal:
:Illinois Natural History Survey Bulletin
1961
Journal:
:Journal of Clinical Epidemiology
2018
Journal:
:Current biology : CB
2017
Michael Jennions
Tamás Székely
Steven R Beissinger
Peter M Kappeler
Jennions et al. introduce the different kinds of sex ratio and their biology.
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