نتایج جستجو برای: copper stress

تعداد نتایج: 517521  

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At the moment, accumulation of heavy metals in water and soil is considered as an important factors of environmental pollution. Copper accumulation in the environment, resulting of application of fertilizers, fungicides and industrial and urban activities, leads to toxicity and adverse effects of this heavy metal on many biological processes of plants. Phytoremediation, is an effective and affo...

Journal: :The American journal of clinical nutrition 2004
Judith R Turnlund Robert A Jacob Carl L Keen J J Strain Darshan S Kelley Joseph M Domek William R Keyes Jodi L Ensunsa Jens Lykkesfeldt James Coulter

BACKGROUND Short-term high copper intake does not appear to affect indexes of copper status or functions related to copper status, but the effects of long-term high copper intake are unknown. OBJECTIVE A study was conducted in men to determine the effect of long-term high copper intake on indexes of copper status, oxidant damage, and immune function. DESIGN Nine men were confined to a metab...

Journal: :Vietnam Journal of Mechanics 2021

This paper presents the effect of water’s temperature on friction properties materials used in marine propeller sliding bearing. Copper-Rubber and Copper-Capron, two common pairs material shaft water-lubricated polymer bearing were chosen to conduct experiments with pin-on-disc model. Various conditions including water temperature, stress, velocity examined, their results showed that range 30 °...

Journal: :Applied and environmental microbiology 2011
Davide Quaranta Travis Krans Christophe Espírito Santo Christian G Elowsky Dylan W Domaille Christopher J Chang Gregor Grass

Surfaces made of copper or its alloys have strong antimicrobial properties against a wide variety of microorganisms. However, the molecular mode of action responsible for the antimicrobial efficacy of metallic copper is not known. Here, we show that dry copper surfaces inactivate Candida albicans and Saccharomyces cerevisiae within minutes in a process called contact-mediated killing. Cellular ...

2017
Mariana Leguizamon Walter O. Draghi Patricia Montanaro Andy Schneider Claudia I. Prieto Pablo Martina Antonio Lagares Peter Lasch Alejandra Bosch

We report here the draft genome sequence of Burkholderia puraquae type strain CAMPA 1040, a member of the Burkholderia cepacia complex. This strain, isolated from a hemodialysis water reservoir, harbors several stress tolerance genes, such as the systems for low oxygen survival, for copper tolerance, and for osmotic stress resistance.

Journal: :Environment international 2002
M Radlowska J Pempkowiak

The induction of stress-70 (Hsp70) in the blue mussels Mytilus edulis from southern Baltic after exposure to cadmium, lead and copper, administrated individually and/or as a mixture, was investigated by means of standard Western blotting using a clone 3A3 monoclonal antibody. The general course of the stress-70 induction was found to be similar for all tested metals. It could be characterised b...

2015
Alexandria M. Warneke Jeremy D. Long Tilmann Harder

Seaweed-herbivore interactions are often mediated by environmental conditions, yet the roles of emerging anthropogenic stressors on these interactions are poorly understood. For example, chemical contaminants have unknown consequences on seaweed inducible resistance and herbivore response to these defenses despite known deleterious effects of contaminants on animal inducible defenses. Here, we ...

A Gholamhoseinian Gh Mohammadi H Zahmatkesh M Nazary M Torkzadeh M Yeganeh

Introduction: Copper and zinc play a key role in oxidative reactions and in vivo studies have shown their different effects. In this study we examined the influence of exposure to copper and zinc on catalase and superoxide dismutase (SOD) activities in erythrocytes, total serum antioxidant capacity and malondiadehyde (MDA) production of copper industry workers. Methods: In the present study...

Journal: :European journal of orthodontics 1997
M P Filleul L Jordan

The stress-strain behaviour of two Ni-Ti and two Copper Ni-Ti orthodontic wires was examined in induced torsion under controlled conditions of moment and temperature. The tests clearly demonstrate the diversity of behaviour of these wires. The loading and unloading curves and plateau regions were found to be closely related to temperature with stiffness varying dramatically over mouth temperatu...

Journal: :Metallomics : integrated biometal science 2015
Amanda K Chaplin Benedict G Tan Erik Vijgenboom Jonathan A R Worrall

In the actinobacterium Streptomyces lividans copper homeostasis is controlled through the action of the metalloregulator CsoR. Under copper stress, cuprous ions bind to apo-CsoR resulting in the transcriptional derepression of genes encoding for copper efflux systems involving CopZ-like copper chaperones and CopA-like P-type ATPases. Whether CsoR obtains copper via a protein-protein mediated tr...

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