Results 241 to 250 of about 256,826 (292)
Some of the next articles are maybe not open access.

Assessment of contaminants in cereals with different degrees of processing

2021
Peer ...
Socas-Rodríguez, Bárbara   +3 more
openaire   +1 more source

[Hepatitis B virus epidemiology: degree of contamination and hyperreactors].

Schweizerische medizinische Wochenschrift, 1982
152 anti-HBs positive blood donors were observed for 2 to 9 years for persistence of this hepatitis-B marker. The results suggest an average persistence of anti-HBs-positive findings in the controlled carriers of at least 10 years. Some of the investigated blood donors belong to a special group of "hyperreactors" with long-lasting persistence of high ...
K, Pfenninger-Schaer   +2 more
openaire   +2 more sources

Chemometric investigation of river system contamination: Source identification and risk assessment using positive matrix factorization and Monte Carlo simulation.

Journal of Contaminant Hydrology
This study investigates the water quality of the Abdal River System in Türkiye, an important water supply for the metropolitan area, using chemometric applications, including Positive Matrix Factorization (PMF) for source apportionment and Monte Carlo ...
F. Ustaoğlu   +4 more
semanticscholar   +1 more source

Assessment of heavy metal contamination, distribution and source identification in the sediments from the Zijiang River, China.

Science of the Total Environment, 2018
In this study, the contents of 10 heavy metals (Sb, Cd, Cr, Mn, Co, Ni, Cu, Zn, As, and Pb) in 49 sediment samples from the Zijiang River were determined by using inductively coupled plasma-optical emission spectrometry.
Zhaoxue Zhang   +5 more
semanticscholar   +1 more source

Contamination, sources and risk assessments of metals in media from Anka artisanal gold mining area, Northwest Nigeria.

Science of the Total Environment, 2020
Mining is a major human activity that has contributed significantly to high degree of environmental and human health degradation. This study was done to uncover the degree of contamination and risks associated with metals in environmental media collected
Adeniyi JohnPaul Adewumi, T. Laniyan
semanticscholar   +1 more source

Heavy metal contamination trends in surface water and sediments of a river in a highly-industrialized region

, 2020
Surface water and sediment samples from the most contaminated river in Taiwan, Houjing River, were collected for five years (2015 to 2019) and from five locations to study the contamination trends of eight heavy metals (As, Cd, Cr, Cu, Hg, Pb, Ni, and Zn)
H. Hoang   +7 more
semanticscholar   +1 more source

Degrees of contamination in magmas evolving by assimilation-fractional crystallization

Geochimica et Cosmochimica Acta, 1996
An equation which gives the degree of contamination in magmas evolving by assimilation-fractional crystallization is derived. In an assimilation-fractional crystallization process which proceeds with constant r and D (De Paolo, 1981), if a trace element in the parental magma is characterized by a different isotope ratio with respect to the ...
openaire   +1 more source

Survey of 99mTc contamination of laboratory personnel: its degree and routes.

Radiology, 1980
Internal contamination of personnel preparing 99mTc labeled radiopharmaceuticals was confirmed by detection of radioactivity in urine. Observation of work habits, whole-body scanner studies, nose swabs, and wipe tests in the hot laboratory demonstrated that: (a) contamination of the laboratory coat occurred during radiopharmaceutical preparation; (b ...
H, Nishiyama   +5 more
openaire   +2 more sources

Degree of Copper Contamination in Germanium Heat-Treated at High Temperatures

Physica Status Solidi (a), 1979
The degree of copper contamination in Ge heat-treated above 700 °C is studied by measuring the density of the copper levels in order to provide an experimental standard which serves to treat Ge at high temperatures. The degree of contamination is in the range 1013 to 1016 cm−3, depending upon the heat-treatment methods and the purity of water used to ...
Y. Kamiura, F. Hashimoto
openaire   +1 more source

THE HORMONE AND ANTIBIOTIC CONTAMINATION DEGREE OF DOMESTIC AND IMPORTED BIRD MEAT

Mechanics and Technologies, 2021
Жұмыста Алматы қаласының базарларынын алынған тауық еті мен ет өнімдерінің 105 түрлі сынамаларынан антибиотиктердің (тетрациклин, стрептомицин, хлорамфеникол) және анаболикалық стероидтердің (прогестерон, тестостерон және эстроген) қалдықтарын анықтау бойынша талдау нәтижелері баяндалған.
openaire   +1 more source

Home - About - Disclaimer - Privacy