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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1783 1
1786 1
1792 1
1796 1
1797 1
1799 4
1801 2
1802 1
1804 1
1809 2
1811 2
1814 2
1818 1
1821 1
1828 2
1829 1
1830 3
1831 5
1833 1
1836 1
1838 2
1840 2
1841 1
1842 2
1843 6
1844 6
1845 4
1846 2
1847 3
1848 1
1849 2
1850 6
1851 2
1852 1
1853 2
1854 6
1855 8
1856 3
1857 5
1858 6
1859 4
1860 4
1861 6
1862 3
1863 3
1864 3
1865 1
1866 7
1867 4
1868 2
1869 5
1870 2
1871 4
1872 7
1873 8
1874 3
1875 6
1876 7
1877 9
1878 7
1879 5
1880 12
1881 13
1882 7
1883 8
1884 10
1885 16
1886 8
1887 10
1888 6
1889 18
1890 12
1891 8
1892 8
1893 10
1894 4
1895 11
1896 11
1897 11
1898 23
1899 17
1900 10
1901 15
1902 7
1903 17
1904 6
1905 10
1906 17
1907 8
1908 15
1909 10
1910 15
1911 29
1912 12
1913 15
1914 9
1915 22
1916 7
1917 11
1918 17
1919 21
1920 18
1921 16
1922 14
1923 16
1924 28
1925 24
1926 12
1927 26
1928 13
1929 14
1930 22
1931 15
1932 20
1933 19
1934 13
1935 25
1936 20
1937 20
1938 25
1939 19
1940 33
1941 51
1942 32
1943 24
1944 35
1945 148
1946 320
1947 309
1948 215
1949 214
1950 271
1951 329
1952 354
1953 369
1954 392
1955 320
1956 398
1957 396
1958 408
1959 505
1960 645
1961 659
1962 690
1963 1033
1964 1207
1965 1069
1966 1221
1967 1343
1968 1487
1969 1576
1970 1844
1971 1836
1972 1714
1973 1681
1974 1728
1975 2302
1976 2325
1977 2216
1978 2295
1979 2419
1980 2325
1981 2351
1982 2434
1983 2777
1984 2879
1985 2951
1986 2946
1987 3129
1988 3244
1989 3832
1990 3884
1991 4085
1992 4002
1993 4033
1994 4384
1995 4279
1996 4735
1997 4660
1998 4896
1999 5485
2000 5982
2001 6980
2002 7208
2003 7652
2004 8082
2005 9267
2006 10046
2007 10377
2008 10882
2009 11176
2010 11649
2011 12840
2012 13679
2013 14144
2014 15536
2015 16262
2016 17153
2017 17575
2018 19012
2019 20754
2020 24948
2021 27292
2022 28084
2023 25997
2024 12623

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434,014 results

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Page 1
The state of ambient air quality in Pakistan--a review.
Colbeck I, Nasir ZA, Ali Z. Colbeck I, et al. Environ Sci Pollut Res Int. 2010 Jan;17(1):49-63. doi: 10.1007/s11356-009-0217-2. Epub 2009 Jul 3. Environ Sci Pollut Res Int. 2010. PMID: 19575252 Review.
A comparison of the levels of these air pollutants with the World Health Organization air quality guidelines was carried out. ...CONCLUSIONS: The current state of air quality calls for immediate action to tackle the poor air quality. ...
A comparison of the levels of these air pollutants with the World Health Organization air quality guidelines was carried out. …
Sorbent trapping of volatile organic compounds from air.
Harper M. Harper M. J Chromatogr A. 2000 Jul 14;885(1-2):129-51. doi: 10.1016/s0021-9673(00)00363-0. J Chromatogr A. 2000. PMID: 10941671 Review.
The use of sorbents in trapping volatile organic compounds in air for subsequent analysis is reviewed. Sorbents are classified in accordance with the mechanism used to recover the trapped compounds, either solvent or thermal desorption. The use of sorbents is contrasted wi …
The use of sorbents in trapping volatile organic compounds in air for subsequent analysis is reviewed. Sorbents are classified in acc …
Characterizing air quality data from complex network perspective.
Fan X, Wang L, Xu H, Li S, Tian L. Fan X, et al. Environ Sci Pollut Res Int. 2016 Feb;23(4):3621-31. doi: 10.1007/s11356-015-5596-y. Epub 2015 Oct 22. Environ Sci Pollut Res Int. 2016. PMID: 26490943
Air quality depends mainly on changes in emission of pollutants and their precursors. Understanding its characteristics is the key to predicting and controlling air quality. In this study, complex networks were built to analyze topological characteristics of air …
Air quality depends mainly on changes in emission of pollutants and their precursors. Understanding its characteristics is the key to …
[Spatiotemporal distribution of negative air ion concentration in urban area and related affecting factors: a review].
Huang XH, Wang J, Zeng HD, Chen GS, Zhong XF. Huang XH, et al. Ying Yong Sheng Tai Xue Bao. 2013 Jun;24(6):1761-8. Ying Yong Sheng Tai Xue Bao. 2013. PMID: 24066568 Review. Chinese.
Negative air ion (NAI) concentration is an important indicator comprehensively reflecting air quality, and has significance to human beings living environment. ...To increase the urban green space and atmospheric humidity and to maintain the soil natural attributes …
Negative air ion (NAI) concentration is an important indicator comprehensively reflecting air quality, and has significance to …
Capturing CO2 from air.
Schuiling RD. Schuiling RD. Proc Natl Acad Sci U S A. 2012 May 15;109(20):E1210; author reply E1211. doi: 10.1073/pnas.1200990109. Epub 2012 Apr 25. Proc Natl Acad Sci U S A. 2012. PMID: 22538823 Free PMC article. No abstract available.
Air quality impacts of a CicLAvia event in Downtown Los Angeles, CA.
Shu S, Batteate C, Cole B, Froines J, Zhu Y. Shu S, et al. Environ Pollut. 2016 Jan;208(Pt A):170-176. doi: 10.1016/j.envpol.2015.09.010. Epub 2015 Oct 23. Environ Pollut. 2016. PMID: 26493865
Since the events reduce the motorized traffic flow, which is a significant source of air pollution, on the streets, it is reasonable to hypothesize that the CicLAvia events can reduce the concentrations of traffic-emitted air pollutants during the road closure. ...
Since the events reduce the motorized traffic flow, which is a significant source of air pollution, on the streets, it is reasonable …
To the canopy and beyond: Air dispersal as a mechanism of ubiquitous protistan pathogen assembly in tree canopies.
Jauss RT, Nowack A, Walden S, Wolf R, Schaffer S, Schellbach B, Bonkowski M, Schlegel M. Jauss RT, et al. Eur J Protistol. 2021 Aug;80:125805. doi: 10.1016/j.ejop.2021.125805. Epub 2021 May 17. Eur J Protistol. 2021. PMID: 34090087 Free article.
Cercozoa and Oomycota contain a huge biodiversity and important pathogens of forest trees and other vegetation. We analyzed air dispersal of these protistan phyla with an air sampler near-ground (~2 m) and in tree crowns (~25 m) of three tree species (oak, linden an …
Cercozoa and Oomycota contain a huge biodiversity and important pathogens of forest trees and other vegetation. We analyzed air dispe …
Air quality during public gatherings.
Elliott LP, Rowe DR. Elliott LP, et al. J Air Pollut Control Assoc. 1975 Jun;25(6):635-6. doi: 10.1080/00022470.1975.10470122. J Air Pollut Control Assoc. 1975. PMID: 1141547 No abstract available.
Air quality in passenger cars of the ground railway transit system in Beijing, China.
Li TT, Bai YH, Liu ZR, Liu JF, Zhang GS, Li JL. Li TT, et al. Sci Total Environ. 2006 Aug 15;367(1):89-95. doi: 10.1016/j.scitotenv.2006.01.007. Epub 2006 Mar 3. Sci Total Environ. 2006. PMID: 16516274
This system connects the northern suburb and downtown, and is equipped with air-conditioned passenger cars. In-train air quality monitoring was performed in both summer (July and August) and winter (December). ...Furthermore, the in-train air quality was grea …
This system connects the northern suburb and downtown, and is equipped with air-conditioned passenger cars. In-train air quali …
434,014 results
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