Results 41 to 50 of about 1,304,142 (297)

Leaching of a Cu-Co ore from Congo using sulphuric acidhydrogen peroxide leachants [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2013
A Cu-Co ore from Katinga Province, the Republic of Congo containing 1.5% Co and 1.6% Cu was tested to determine the leachability of Cu and Co using sulphuric acid and hydrogen peroxide mixtures at different conditions.
Seo S.Y., Choi W.S., Kim M.J., Tran T.
doaj   +1 more source

Hydrogen Peroxide in the Troposphere

open access: yesArchives of Industrial Hygiene and Toxicology, 2007
Vodikov Peroksid U TroposferiUloga vodikova peroksida (H2O2) u atmosferskoj kemiji i njegov doprinos u nastanku slobodnih radikala počeli su se proučavati tek posljednjih nekoliko desetljeća. Fotokemijskim reakcijama s ozonom i H2O2 nastaju oksidansi (slobodni radikali) koji mogu oksidirati biomolekule unutar stanica te dovesti do smrti stanica i ...
openaire   +2 more sources

The decomposition of alkyl peroxides: dipropyl peroxide, ethyl hydrogen peroxide and propyl hydrogen peroxide [PDF]

open access: yesProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1939
Abstract In a previous paper (Harris and Egerton 1938) the results of an investigation of the decomposition of diethyl peroxide have been published. The present communication deals with the related compounds (a) dipropyl peroxide, which closely resembles the diethyl compound as it decomposes unimolecularly, (b) ethyl hydrogen peroxide,
openaire   +1 more source

An Efficient Sensor for Determination of Concentrated Hydrogen Peroxide Based on Nickel Oxide Modified Carbon Paste Electrode

open access: yesInternational Journal of Electrochemical Science, 2012
A new sensor for the analytical determination of hydrogen peroxide is proposed. This sensor was constructed by immobilizing nickel oxide film on the surface of carbon paste electrode, which was performed by derivatization of nickel hexacyanoferrate ...
Reza Ojani   +2 more
doaj   +1 more source

Homocysteine inhibits hydrogen peroxide breakdown by catalase

open access: yes, 2008
Catalase, an antioxidant enzyme responsible for degradation of hydrogen peroxide, is protective in many diseases. The amino-acid homocysteine has been suggested to be a pro-oxidant with elevated levels linked to the oxidative stress seen in Alzheimer's ...
Milton, N.G.N.
core   +1 more source

Emerging experimental and computational methods for studying redox‐regulated structural transitions

open access: yesFEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass   +2 more
wiley   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil   +3 more
wiley   +1 more source

Persister Cell Formation and Elevated lsrA and lsrC Gene Expression upon Hydrogen Peroxide Exposure in a Periodontal Pathogen Aggregatibacter actinomycetemcomitans

open access: yesMicroorganisms, 2023
The effect of hydrogen peroxide, an antiseptic dental treatment, on Aggregatibacter actinomycetemcomitans, the main causative agent of localized invasive periodontitis, was investigated.
Yohei Nakamura   +4 more
doaj   +1 more source

Determining hydrogen peroxide exposure of employees at Company XYZ [PDF]

open access: yes, 2002
Plan BThe significance of this study stems from the plethora of health effects associated with the exposure of industrial hydrogen peroxide concentrations.
Bostwick, Stephanie L.
core  

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

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