نتایج جستجو برای: inorganic substances

تعداد نتایج: 129448  

2011
Z. Večeřa P. Mikuška J. Kellner J. Navrátil A. Langerová

The submitted paper deals with the problems of trapping and enriching the gases and aerosols of the substances to be determined in the ambient atmosphere. Further, the paper is focused on the working principle of the miniaturized portable continuous concentrator we have designed and the possibilities of its application in air sampling and accumulation of organic and inorganic substances with wh...

Journal: :Autoimmunity reviews 2005
Said Havarinasab Per Hultman

Based on in vitro studies and short-term in vivo studies, all mercurials were for a long time considered as prototypic immunosuppressive substances. Recent studies have confirmed that organic mercurials such as methyl mercury (MeHg) and ethyl mercury (EtHg) are much more potent immunosuppressors than inorganic mercury (Hg). However, Hg interacts with the immune system in the presence of a susce...

Variation of hydrochemical conditions, with special reference to adequacy of waters as fish habitats, was traced based on selected hydrochemical parameters obtained during the studies conducted from February 2013 till February 2014 year. The results were compared with earlier studies. The sources of organic pollution were identified, and the effect of biogenic substances on the biomass, as well...

Journal: :Biochemistry and cell biology = Biochimie et biologie cellulaire 2005
Laura Bandura Justyna Drukala Agnieszka Wolnicka-Glubisz Mikael Björnstedt Wlodzimierz Korohoda

Among the substances that attracted the attention of oncologists in recent years are selenium-containing compounds, both inorganic and organic. Several epidemiological studies have shown an inverse correlation between selenium intake and cancer incidence. In the experiments reported here, we compared the effects of 2 inorganic selenium-containing salts that differed in the level of selenium oxi...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Maria A Navarro Elliot L Atlas Alfonso Saiz-Lopez Xavier Rodriguez-Lloveras Douglas E Kinnison Jean-Francois Lamarque Simone Tilmes Michal Filus Neil R P Harris Elena Meneguz Matthew J Ashfold Alistair J Manning Carlos A Cuevas Sue M Schauffler Valeria Donets

Very short-lived brominated substances (VSLBr) are an important source of stratospheric bromine, an effective ozone destruction catalyst. However, the accurate estimation of the organic and inorganic partitioning of bromine and the input to the stratosphere remains uncertain. Here, we report near-tropopause measurements of organic brominated substances found over the tropical Pacific during the...

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