Results 21 to 30 of about 387,067 (246)

Local versus Regional Contributions to PM10 Levels in the Western Mediterranean

Aerosol and Air Quality Research, 2023
In this study, PM10 daily samples were collected every day during approximately one month in winter and one month in summer, 2019. Sampling was performed simultaneously at two different locations: an urban traffic site (~80 m a.s.l.) and a regional ...
Álvaro Clemente, Nuria Galindo, Jose F. Nicolás, Javier Crespo, Carlos Pastor, Eduardo Yubero   +5 more
doaj   +1 more source

Consensus on reducing health impacts of ambient fine particulate matter

环境与职业医学
In recent years, China has achieved significant progress in controlling fine particulate matter with median aerodynamic diameter ≤2.5 μm (PM2.5) pollution.
Expert Consensus Panel on Health Protection against Air Pollution
doaj   +1 more source

Spectral pollution

IMA Journal of Numerical Analysis, 2004
We discuss the problems arising when computing eigenvalues of self-adjoint operators which lie in a gap between two parts of the essential spectrum. Spectral pollution, i.e. the apparent existence of eigenvalues in numerical computations, when no such eigenvalues actually exist, is commonplace in problems arising in applied mathematics.
Davies, E B, Plum, M
openaire   +3 more sources

Etiology of diarrheal disease among children under 5 years in Egypt: a high incidence of human bocavirus

Journal of the Egyptian Public Health Association, 2021
Background Human bocavirus (HBoV) is globally distributed and associated with respiratory and enteric infections. Limited data are available about the incidence of HBoV in Egyptian children.
Neveen M. Rizk, Sherif Abd-Elmaksoud, Tarek M. Farid, Maha M. A. Abohashish, Ahmad Z. Al-Herrawy, Ibrahim A. Hamza   +5 more
doaj   +1 more source

Marine Pollution [PDF]

Science, 1971
In the editorial, "Marine pollution" (8 January 1971, page 21), the value given for the concentration of mercury found in tuna (paragraph 2, line 10, 0.5 x 10-6 part per billion) is incorrect. The correct value is 500 parts per billion.
openaire   +3 more sources

Efficient ozonation of reverse osmosis concentrates from petroleum refinery wastewater using composite metal oxide-loaded alumina

Petroleum Science, 2017
Novel Mn–Fe–Mg- and Mn–Fe–Ce-loaded alumina (Mn–Fe–Mg/Al2O3 and Mn–Fe–Ce/Al2O3) were developed to catalytically ozonate reverse osmosis concentrates generated from petroleum refinery wastewaters (PRW-ROC).
Yu Chen, Chun-Mao Chen, Brandon A. Yoza, Qing X. Li, Shao-Hui Guo, Ping Wang, Shi-Jie Dong, Qing-Hong Wang   +7 more
doaj   +1 more source

Performance and mechanisms of enhanced hydrolysis acidification by adding different iron scraps: Microbial characteristics and fate of iron scraps

Frontiers in Microbiology, 2022
HA, as one of low-carbon pre-treatment technology could be enhanced by packing of iron or iron oxide powder for enhancing the transformation of large molecular weight to generate volatile fatty acids (VFAs) for fuel production.
Yanqiong Wang, Hongwu Wang, Hongwu Wang, Hui Jin, Hongbin Chen   +4 more
doaj   +1 more source

Emission Characteristics of Hazardous Air Pollutants from Construction Equipment

Aerosol and Air Quality Research, 2020
The emission characteristics of mobile air pollution sources belonging to the non-road sector have yet to be thoroughly investigated, especially when compared to those of on-road vehicles.
Sungwoon Jung, Sunmoon Kim, Yunsung Lim, Jongtae Lee, Taekho Chung, Heekyoung Hong, Sunhee Mun, Seunghwan Lee, Woojun Jang, Jaehyun Lim   +9 more
doaj   +1 more source

Rapid and Efficient Degradation of Ceftiofur Sodium by 5,6-Dimethylbenzimidazole-Modified ZIF(Fe/Co)x@CNF Nanocomposites

Journal of Chemistry, 2023
The exploration of transforming various metals as metal sources into metal organic frameworks (MOFs) has attracted considerable attention in recent years. This study used triethylamine and 5,6-dimethylbenzimidazole (DMBIM) to modify the iron-doped cobalt
Hao Fu, Aotian Gu, Peng Wang, Chunhui Gong, Zhiying Li, Kai Chen, Yi Yang   +6 more
doaj   +1 more source

Impact of Shutdown due to COVID-19 Pandemic on Aerosol Characteristics in Kanpur, India [PDF]

Journal of Health and Pollution, 2020
Background. Since March 2020, the number of confirmed COVID-19 positive cases have steadily risen in India. Various preventive measures have been taken to contain the spread of COVID-19.
Nidhi Shukla, Gautam Kumar Sharma, Parinita Baruah, V. K. Shukla, Prashant Gargava   +4 more
doaj   +1 more source