نتایج جستجو برای: radioactive trace elements
تعداد نتایج: 351116 فیلتر نتایج به سال:
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Here, we present a sub-μm multimodal approach to image essential elements in Caenorhabditis elegans. A combination of chemical imaging technologies reveals total metal concentration, chemical state and the protein to which an element is associated. This application of distinct yet complementary chemical imaging techniques provided unique insight into essential and trace elements at the subcellu...
Studies of the last decades have shown that peat and peat-bogs function as an important factor for environment protection. Due to good take-up and filtering qualities, peat-bog deposits perform to absorb petroleum products, different natural and human-made chemical and radioactive pollutants. Due to low salinity of bog water and turf humic acids, the peat-bed is capable to extract cations of ca...
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Anaerobic digestion (AD) is a complex multi-stage process relying on the activity of highly diverse microbial communities including hydrolytic, acidogenic and syntrophic acetogenic bacteria as well as methanogenic archaea. The lower diversity of methanogenic archaea compared to the bacterial groups involved in AD and the corresponding lack of functional redundancy cause a stronger susceptibilit...
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Based on our previous finding that Zn is preferentially taken up in rat brain tumors, we examined the uptake of various radioactive elements in a rat brain tumor by using the multitracer technique. The multitracer solution was intravenously injected into rats 14 days after intrahippocampal injection of C6 glioma. Brain distribution and blood level of radioactive elements were determined 1 h aft...
pollution deriving from trace elements (cd, cu, ni, pb, zn, hg, as and cr) in sediment samples(collected in 2009), belonging to rivers located in catalonia and the basque country (spain), was assessedaccording to sediment quality guidelines. sediment samples were ranked in terms of a pollution index thattakes into account the presence of multiple pollutants such as trace elements. while only ab...
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