نتایج جستجو برای: water copper

تعداد نتایج: 626047  

2013
Ehsanollah Sakhaee Jalil Abshenas Reza Kheirandish Omid Azari Fatemeh Mirzabeigi Ali Mostafavi

Objective: The aim of the current study was to evaluate adverse effects of Zataria multiflora essential oil on epididymal sperm quality, and testicular tissue following experimentally induced copper poisoning in mice. Methods: The study comprised of four different groups of twelve mice as follows: Group N (Normal) and group Cu (Copper) received pure drinking water, while Groups Z (Zataria multi...

2013
Mukesh Parmar Lokendra Singh Thakur

Electroplating and metalworking industries discharge large amounts of heavy metals, including copper (Cu), nickel (Ni) and zinc (Zn) ions, in their effluents have been recognized as a major problem to human health and aquatic life. Copper is highly toxic because it is non biodegradable and carcinogenic, Copper has been reported to cause neurotoxicity commonly known as “Wilson’s disease” due to ...

Journal: :Environmental science & technology 2012
Mark Velleux Aaron Redman Paul Paquin Robert Santore John F England Pierre Y Julien

Copper is used as an antimicrobial agent in building materials such as algae-resistant roofing shingles and treated wood products for decks, fences, and utility poles used in urbanized areas. Releases from these materials may pose risks to aquatic and terrestrial organisms. Copper exposures in surface water, sediment, and soil were estimated for a hypothetical urban setting using the TREX water...

2015
Redouane Beniazza Natalia Bayo Florian Molton Carole Duboc Stéphane Massip Nathan McClenaghan Dominique Lastécouères Jean-Marc Vincent

The search for copper catalysts able to perform effectively click reactions in water in the absence of sodium ascorbate is an active area of current research with strong potential for applications in bioconjugation. The water-soluble and photoreducible copper(II)-EDA (EDA = ethylenediamine) complex 1, which has two 4-benzoylbenzoates acting as both counterion and photosensitizer, has been synth...

Journal: :Environmental science & technology 2003
Stan Lebow R Sam Williams Patricia Lebow

The release of arsenic from wood pressure-treated with chromated copper arsenate (CCA) can be decreased by application of wood finishes, but little is known about the types of finishes that are best suited for this purpose. This study evaluated the effects of finish water repellent content and ultraviolet (UV) radiation on the release of arsenic, copper, and chromium from CCA-treated wood expos...

2009
T. Y. Soror

This paper presents the results of study that was undertaken to investigate the ability of a new antiscale, polyacrylamide in solving problems found in cooling water systems. The effects of the polymer on C-steel and copper dissolution in synthetic cooling water environment were studied through scale, Tafel, and Linear polarization measurements. The results obtained from this study showed that ...

2012

This study presents the improvement of thermal performance of heat pipe using copper nanofluid with aqueous solution of n-Butanol. The nanofluids kept in the suspension of conventional fluids have the potential of superior heat transfer capability than the conventional fluids due to their improved thermal conductivity. In this work, the copper nanofluid which has a 40 nm size with a concentrati...

Journal: :Analytical chemistry 2017
Wenjing Kang Xing Pei Cory A Rusinek Adam Bange Erin N Haynes William R Heineman Ian Papautsky

This work demonstrates determination of lead (Pb) in surface water samples using a low-cost copper (Cu)-based electrochemical sensor. Heavy metals require careful monitoring due to their toxicity, yet current methods are too complex or bulky for point-of-care (POC) use. Electrochemistry offers a convenient alternative for metal determination, but the traditional electrodes, such as carbon or go...

Journal: :Environmental science & technology 2007
Brajesh Dubey Timothy Townsend Helena Solo-Gabriele Gabriel Bittont

New alternative wood preservatives contain higher levels of copper (Cu) which can promote aquatic toxicity in natural water systems. Earlier work focused on evaluating toxicity using laboratory generated leaching solutions. In this study, the impact on preservative leaching and aquatic toxicity from treated wood products was evaluated using natural surface waters including waters from two river...

Journal: :Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 1998
Z Liu J E Stout M Boldin J Rugh W F Diven V L Yu

One copper-silver ionization system was sequentially installed onto the hot-water recirculation lines of two hospital buildings colonized with Legionella pneumophila, serogroup 1. A third building with the same water supply and also colonized with Legionella served as a control. Four weeks after activation of the system, distal site positivity for Legionella in the first test building dropped t...

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