نتایج جستجو برای: copper

تعداد نتایج: 82752  

2006
Zbigniew Hanzelka Andrzej Bien

This Guide has been produced as part of the Leonardo Power Quality Initiative (LPQI), a European education and training programme supported by the European Commission (under the Leonardo da Vinci Programme) and International Copper Association. For further information on LPQI visit www.lpqi.org. Copper Development Association (CDA) Copper Development Association is a non-trading organisation sp...

Journal: :Journal of hazardous materials 2011
H Benaïssa M A Elouchdi

In the present work, the usefulness of dried activated sludge has been investigated for the removal of copper ions from synthetic aqueous solutions. Kinetic data and equilibrium sorption isotherm were measured in batch conditions. The influence of some parameters such as: contact time, initial copper concentration, initial pH of solution and copper salt nature on copper biosorption kinetics has...

Journal: :The Journal of biological chemistry 2004
Erin M Rees Jaekwon Lee Dennis J Thiele

Copper plays an essential role in processes including signaling to the transcription and protein trafficking machinery, oxidative phosphorylation, iron mobilization, neuropeptide maturation, and normal development. Whereas much is known about intracellular mobilization of ions such as calcium, little information is available on how eukaryotic cells mobilize intracellular copper stores. We descr...

2013
Pavle Matak Sara Zumerle Maria Mastrogiannaki Souleiman El Balkhi Stephanie Delga Jacques R. R. Mathieu François Canonne-Hergaux Joel Poupon Paul A. Sharp Sophie Vaulont Carole Peyssonnaux

Iron and copper are essential trace metals, actively absorbed from the proximal gut in a regulated fashion. Depletion of either metal can lead to anemia. In the gut, copper deficiency can affect iron absorption through modulating the activity of hephaestin - a multi-copper oxidase required for optimal iron export from enterocytes. How systemic copper status regulates iron absorption is unknown....

2013
Scot C. Leary Paul A. Cobine Tamiko Nishimura Robert M. Verdijk Ronald de Krijger René de Coo Mark A. Tarnopolsky Dennis R. Winge Eric A. Shoubridge

SCO1 and SCO2 are metallochaperones whose principal function is to add two copper ions to the catalytic core of cytochrome c oxidase (COX). However, affected tissues of SCO1 and SCO2 patients exhibit a combined deficiency in COX activity and total copper content, suggesting additional roles for these proteins in the regulation of cellular copper homeostasis. Here we show that both the redox sta...

Journal: :Metal-Based Drugs 1998
Weiping Liu Yikun Yang Huizhou Xiong Ying Lu Rong Yang

The distribution of copper in Sprague - Dawley rats following a three month oral administration of 0,10 or 50mg/kg copper aspirinate has been investigated. Metal content was determined by ICP - AES in blood, brain, kidney, liver, lung, spleen, and dejection. The results show that treatment with copper aspirinate did not cause accumulation of copper in rats and excess ingested copper was excrete...

Journal: :international journal of environmental research 2013
n. dizadji m. rashtchi s. dehpouri n. nouri

considering the point that the existence of heavy metals in the wastewater are so dangerous forthe environment and it would have many bad consequences for all the creatures including human beings, wemust try out the ways that make us capable of adsorbing these heavy metals. in order to accomplish this goal we should use a method called adsorbing. in this study the adsorption of copper ions in h...

2003
David B. Milne Forrest H. Nielsen

In experimental animals, high dietary fructose exacerbates signs of copper deficiency in rats. Thus, an experiment was performed to determine whether high dietary fructose affected copper metabolism and copper status indicators in healthy men who were fed low dietary copper. Six men aged 27 to 37 years completed a metabolic unit study divided into four 7-week dietary periods with a randomized, ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2012
Steve Tottey Carl J Patterson Lucia Banci Ivano Bertini Isabella C Felli Anna Pavelkova Samantha J Dainty Rafael Pernil Kevin J Waldron Andrew W Foster Nigel J Robinson

Copper metallochaperones supply copper to cupro-proteins through copper-mediated protein-protein-interactions and it has been hypothesized that metallochaperones thereby inhibit copper from causing damage en route. Evidence is presented in support of this latter role for cyanobacterial metallochaperone, Atx1. In cyanobacteria Atx1 contributes towards the supply of copper to plastocyanin inside ...

2013
Andrew Crowe Connie Jackaman Katie M. Beddoes Belinda Ricciardo Delia J. Nelson

Copper, an essential trace element acquired through nutrition, is an important co-factor for pro-angiogenic factors including vascular endothelial growth factor (VEGF). Decreasing bioavailable copper has been used as an anti-angiogenic and anti-cancer strategy with promising results. However, the role of copper and its potential as a therapy in mesothelioma is not yet well understood. Therefore...

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