نتایج جستجو برای: cobalt toxicity

تعداد نتایج: 147866  

Journal: :Chinese Journal of Catalysis 2022

Vanadium-based catalysts are considered the most promising materials to replace cobalt-based for activation of peroxymonosulfate (PMS) degrade organic pollutants. However, these traditional vanadium species easily leak out metal ions that can affect environment, even though is much less than cobalt. Compared other vanadium-based catalysts, e.g., V2O3, fluorinated V2AlC shows a high and constant...

Journal: :Journal of applied toxicology : JAT 2015
Olga M Posada R J Tate M H Grant

Adverse tissue responses to prostheses wear particles and released ions are important contributors to hip implant failure. In implant-related adverse reactions T-lymphocytes play a prominent role in sustaining the chronic inflammatory response. To further understand the involvement of lymphocytes in metal-on-metal (MoM) implant failure, primary human lymphocytes were isolated and treated with c...

2016
Nicholas J. Hawco Daniel C. Ohnemus Joseph A. Resing Benjamin S. Twining Mak A. Saito

Cobalt is a nutrient to phytoplankton, but knowledge about its biogeochemical cycling is limited, especially in the Pacific Ocean. Here, we report sections of dissolved cobalt and labile dissolved cobalt from the US GEOTRACES GP16 transect in the South Pacific. The cobalt distribution is closely tied to the extent and intensity of the oxygen minimum zone in the eastern South Pacific with highes...

2007
Jeong-Min Lee Ju Wan Kim Ji Sun Lim Tae Jin Kim Shin Dong Kim Soo-Jin Park Young-Seak Lee

The effect of cobalt precursor on the structure of Co supported multi-walled carbon nanotubes (MWCNTs) were studied by using X-ray photoelectron spectroscopy (XPS). MWCNTs were treated with a mixture of nitric and sulfuric acids and decorated with cobalt and/or cobalt oxides via aqueous impregnation solutions of cobalt nitrate or cobalt acetate followed by reduction in hydrogen. XPS was mainly ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2009
ahmad tavasoli mohammad irani ali nakhaeipour yadollah mortazavi abas ali khodadadi

the potential of carbon nanotubes (cnt) supported cobalt catalysts for fischer-tropsch (ft) reaction is shown. using the wet impregnation method cobalt on carbon nanotubes catalysts were prepared with cobalt loading varying from 15 to 45 wt. %. the catalysts are characterized by different methods including: bet physisorption, x-ray diffraction, hydrogen chemisorption, and temperature-programmed...

Journal: :International Journal of Innovative Research in Science, Engineering and Technology 2016

Journal: :Turkish Journal of Computer and Mathematics Education (TURCOMAT) 2021

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