نتایج جستجو برای: cu and ni in hendekhale
تعداد نتایج: 21766203 فیلتر نتایج به سال:
Dust is one of the environmental hazards in arid and semi-arid regions of the world. In some areas, under the influence of human activities, dust is contaminated by heavy metals. In this study, the dust of 10 stations in the Kuhdasht region of Lorestan province in four seasons of spring, summer, autumn, and winter, as well as adjacent surface soils (a total of 40 dust samples and 10 surface soi...
According to importance of Chabahar Bay as one of the marine strategic areas and need to learn about pollution of this area, in this study, Cu, Ni and Zn concentration was investigated in the soft tissue of chiton Acanthopleura vaillantii from 5 stations in the coast of Chabahar Bay at autumn of 1394. For this purpose, samples were collected and transferred to the laboratory, then after prepara...
In this study, the concentrations of Cu, Ni, Pb, Cd, Sr and Mg in hair, lung and femur tissues of Persian Jird as bioindicator species in different regions of Darreh Zereshk copper mine were investigated. In summer of 2012, a systematic random sampling was performed by using snap trap in different parts of the copper mine. Wet digestion method and ICP-OES instrument were applied for measurement...
A study was carried out to characterize Ni-Co-PVC and Ni-Cu-PVC composite materials prepared by mechanical alloying technique (MAT) using SEM, EDS and electrochemical test. Composite materials were prepared by mixing together 95% of metal powder (Ni+Co or Ni+Cu) with 5% PVC. PVC was used as a binder and tetrahydrofuran (THF) was used as a solvent in composite material preparation. Based on the ...
This study addresses the feasibility of removing Cu and Ni from sludges of printed circuit board (PCB) plants by acidic extraction. Citric acid, acetic acid, hydrochloric acid, nitric acid, and sulfuric acid at various concentrations were experimentally examined to determine preferred conditions for removing Cu and Ni. Experimental results indicate that the removal ratios of Cu were 57% (citric...
the accumulation of heavy metals cd, cu, ni, pb, v and zn in the mangrove, avicennia marina, was studied. cu, cd, and pb were accumulated in root tissues to levels higher than surrounding sediments. zn, ni, and v were accumulated to levels lower than sediment concentrations. pb and zn showed little mobility to leaf tissue but cu was accumulated in leaves with low concentration. since pb and zn ...
In this work electrodeposited Ni-Cu/Cu metallic multilayered films with different thicknesses of Ni and Cu were prepared on (100) polycrystalline Cu substrates. The nanostructure of the multilayers was studied using XRD. The existence of satellite peaks in the XRD patterns showed that the multilayered films have superlattice structures. The difference between the intensity of ML(200) and ML(11...
Ni-implantation has been conducted for sputter deposited Zr alloy films to investigate compositional dependent amorphization behavior in proportion to Ni in Zr alloys. As-deposited Zr and Zr–Cu with thickness of 200 nm shows columnar hcp-Zr and nano-crystalline hcp-Zr(Cu), respectively. Implantation of 150 keV Niþ with the amount of 1 10 ions/cm induces amorphization of Zr and Zr(Cu) with 100 n...
In the present study, Nickel-Copper nanoparticles were electrodeposited on glassy carbon electrode (GCE) by using electroplating deposition method. The prepared electrode was characterized by scanning electron microscopy (SEM) and elemental mapping analysis. Results showed that Ni-Cu nanoparticles with a high density are distributed at the surface of the glassy carbon electrode. Subsequentl...
The kinetics of the solid-state reactive diffusion between SnNi alloys and pure Cu was experimentally observed to examine effects of addition of Ni into Sn on the growth behavior of compounds at the interconnection between the Sn-base solder and the multilayer Au/Ni/Cu conductor during energization heating. In this experiment, sandwich (SnNi)/Cu/(SnNi) diffusion couples with Ni concentration...
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