Results 71 to 80 of about 105,637 (204)

STATISTICAL EVALUATION OF DATA ON THE POLLUTION OF THE PRUT RIVER WITH AMMONIUM NITROGEN

Journal of Engineering Science (Chişinău)
This paper analyzes the pollution of the Prut River with ammonium nitrogen (NH₄⁺) during the period 2019–2021, focusing on exceedances of the maximum allowable concentration (MAC) of 0.2 mg/L.
MARUSIC, Galina, BRANIȘTE, Rodica, SAVA, Nina, ABABII, Victor, CĂRBUNE, Viorel, TIHOLAZ, Tamara   +5 more
doaj   +1 more source

Safe design of cooled tubular reactors for exothermic, multiple reactions; parallel reactions—I: Development of criteria [PDF]

, 1984
Previously reported design criteria for cooled tubular reactors are based on the prevention of reactor temperature run away and were developed for single reactions only.
Ptasiński, K.J., Westerterp, K.R.
core   +3 more sources

Metals phytotoxicity assessment and phyto maximum allowable concentration

Polish Journal of Soil Science, 2019
<p>In this paper, the influence of metals (Cd, Pb, Cu, Co, Ni, Zn) on plants of spring barley (<em>Hordeum vulgare</em> L.) was investigated in polluted sod podzolic sandy loam on layered glacial sands and calcareous deep chernozem on loamy loess soils.
openaire   +2 more sources

Toxicological safeguards in the manned Mars missions [PDF]

Safeguards against toxic chemical exposures during manned Mars missions (MMMs) will be important for the maintenance of crew health and the accomplishment of mission objectives.
Coleman, Martin E.
core   +1 more source

Water quality aspects from Spanish sites to support managed aquifer recharge (MAR) guidelines not based on maximum allowable concentration standards

Acque Sotterranee
Most countries that have technical guidelines or regulations for artificial recharge or managed aquifer recharge (MAR), that include water quality aspects are based on the establishment of standards or Maximum Allowable Concentrations (MACs) to regulate
Enrique Fernandez-Escalante, José David Henao Casas, Rodrigo Calero Gil   +2 more
doaj   +1 more source

A screen for Benzo(a)pyrene in fish samples from crude oil polluted environments [PDF]

, 2008
Several studies have shown that exposure to Benzo(a)pyrene increases the risk of cancer. In this study several fish samples from Niger the Delta region of Nigeria were screened for the presence of Benzo(a)pyrene.
Anyakora, Chimezie., Arbabi, Mohsen., Coker, Herbert.   +2 more
core  

Importance of Changes in the Copper Production Process through Mining and Metallurgical Activities on the Surface Water Quality in the Bor Area, Serbia

Metals
This paper considers the impact of copper mining-influenced water and metallurgical wastewater on the surface water in the Bor area, Serbia. Sampling, realized through the four campaigns (2020–2021), confirmed that both types of water, discharged without
Radmila Marković, Vesna M. Marjanović, Zoran Stevanović, Vojka Gardić, Jelena Petrović, Renata Kovačević, Zoran Štirbanović, Bernd Friedrich   +7 more
doaj   +1 more source

Evaluation of heavy metals content in dietary supplements in Lebanon

Chemistry Central Journal, 2013
Background The consumption of dietary supplements is widely spread and on the rise. These dietary supplements are generally used without prescriptions, proper counseling or any awareness of their health risk.
Korfali Samira, Hawi Tamer, Mroueh Mohamad   +2 more
doaj   +1 more source

Guidelines for the microbiological quality of treated wastewater used in agriculture: recommendations for revising WHO guidelines

Bulletin of the World Health Organization, 2000
Three different approaches for establishing guidelines for the microbiological quality of treated wastewater that is reused for agriculture are reviewed.
Ursula J. Blumenthal, D. Duncan Mara, Anne Peasey, Guillermo Ruiz-Palacios, Rebecca Stott   +4 more
doaj  

Assessment of Concentration and Potential Health Risks of Heavy Metals in Vegetable Samples Cultivated in Toro Mining Site, Bauchi State Nigeria

UMYU Journal of Microbiology Research
Heavy metals are dense metallic elements with significant environmental and health impacts. The risk of exposure to the population from heavy metals in an area that had witnessed long-term mining activities was evaluated in the current study.
M G Bala, A I Yaradua, H G Kabir, I S Yasir, A Abdullahi, K Umar, K I Matazu   +6 more
doaj   +1 more source