Modulated microstructures in copper-zinc and copper-aluminum-nickel

This paper focuses on the factors that influence the changes in copper prices. A brief review of the literature showed several areas of interests of researchers, such as global economic situation and development of Asian countries. This paper draws attention to concurrent price trends, some pairs of raw materials (e.g. copper – aluminum, copper – silver, even copper – palladium). This paper uses multiple regression model containing monthly data spanning from January 2012 to June 2015, which consist of 42 observations for metals: copper, zinc, aluminum, silver, gold, platinum and palladium. And it shows a strong relationship between the prices of copper and other metals.

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Electronic properties of bulk copper-aluminum and copper-zinc alloys

Physical Review B ◽

10.1103/physrevb.27.3263 ◽

1983 ◽

Vol 27 (6) ◽

pp. 3263-3272 ◽

Cited By ~ 11

Author(s):

K. R. Mountfield ◽

J. A. Rayne

Keyword(s):

Electronic Properties ◽

Zinc Alloys ◽

Copper Zinc ◽

Copper Aluminum

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Concentration of selected micro-nutrients in saliva among women in menopausal period treated with hormone replacement therapy

Osteologie/Osteology ◽

10.1055/s-0038-1630097 ◽

2013 ◽

Vol 22 (01) ◽

pp. 46-51

Author(s):

M. Rahnama ◽

I. Jastrzêbska-Jamrogiewicz ◽

R. Jamrogiewicz

Keyword(s):

Bone Mineral Density ◽

Hormone Replacement Therapy ◽

Blood Serum ◽

Replacement Therapy ◽

Hormone Replacement ◽

Surgical Removal ◽

Femoral Bone ◽

Mineral Density ◽

Natural Menopause ◽

Copper Zinc

Summary Objective: The aim of this study was to observe the variability of the level of copper, zinc and manganese in saliva amongst women with hypoestrogenia, treated and untreated with hormone replacement therapy (HRT). Methods: The study was conducted on a group of 60 women treated and untreated with HRT. Half of the patients were after natural menopause and other half was after surgical removal of ovaries. Research on micronutrients in non-stimulated saliva and blood serum was carried out in 2005. Tests on saliva were repeated in 2010. Investigation of bone mineral density (BMD) of femoral bone was performed in year 2010. Results: Statistical analysis of concentration of copper and zinc revealed a linear correlation between the levels of these microelements in blood serum and saliva. The study revealed that HRT has a beneficial effect on BMD and the concentration of copper and manganese in saliva and blood serum of patients after the menopause. Patients treated with HRT showed higher BMD values than groups not treated with hormones. Conclusions: Saliva appears to be a promising diagnostic material which can be used to analyze the content of trace elements, but further research should be carried out on a broader research group.

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