Results 271 to 280 of about 748,927 (317)
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1968
In 1958 exposure tests were started in Sweden to gain knowledge of the natural patination and the corrosion behavior of copper and copper alloys when used outdoors. The investigation covered 36 alloys in sheet or rod form: 5 coppers, 20 brasses, 5 phosphor bronzes, 1 silicon bronze, 1 aluminum bronze, 1 cadmium bronze, 2 nickel-silvers, and 1 free ...
E Mattsson, R Holm
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In 1958 exposure tests were started in Sweden to gain knowledge of the natural patination and the corrosion behavior of copper and copper alloys when used outdoors. The investigation covered 36 alloys in sheet or rod form: 5 coppers, 20 brasses, 5 phosphor bronzes, 1 silicon bronze, 1 aluminum bronze, 1 cadmium bronze, 2 nickel-silvers, and 1 free ...
E Mattsson, R Holm
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Critical Reviews in Oncology/Hematology, 2002
Metal ions play an important role in biological systems, and without their catalytic presence in trace or ultratrace amounts many essential co-factors for many biochemical reactions would not take place. However, they become toxic to cells when their concentrations surpass certain optimal (natural) levels. Copper is an essential metal. Catalytic copper,
J. Anastassopoulou, T. Theophanides
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Metal ions play an important role in biological systems, and without their catalytic presence in trace or ultratrace amounts many essential co-factors for many biochemical reactions would not take place. However, they become toxic to cells when their concentrations surpass certain optimal (natural) levels. Copper is an essential metal. Catalytic copper,
J. Anastassopoulou, T. Theophanides
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2018
Copper and its alloys are widely used because of their outstanding conductivity, workability and resistance to corrosion. Selected alloys from the principal groups of copper-based materials are presented, including unalloyed coppers, high-copper alloys, brasses, and bronzes, highlighting the capability of this class of materials. The description of the
Jens Freudenberger, Hans Warlimont
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Copper and its alloys are widely used because of their outstanding conductivity, workability and resistance to corrosion. Selected alloys from the principal groups of copper-based materials are presented, including unalloyed coppers, high-copper alloys, brasses, and bronzes, highlighting the capability of this class of materials. The description of the
Jens Freudenberger, Hans Warlimont
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Physical Review Letters, 1990
The presence of Cu atoms in p-type Si is detected via their characteristic electric-field gradients measured at the radioactive acceptor $^{111}\mathrm{In}$${/}^{111}$Cd by the perturbed \ensuremath{\gamma}\ensuremath{\gamma} angular correlation technique.
Keller, R. +5 more
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The presence of Cu atoms in p-type Si is detected via their characteristic electric-field gradients measured at the radioactive acceptor $^{111}\mathrm{In}$${/}^{111}$Cd by the perturbed \ensuremath{\gamma}\ensuremath{\gamma} angular correlation technique.
Keller, R. +5 more
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Copper metabolism in the kidney of rats administered copper and copper-metallothionein
American Journal of Physiology-Renal Physiology, 1998To gain a greater understanding of the mechanism of Cu metabolism in kidneys of rats, using autofluorescence of Cu-metallothioneins (Cu-MTs) we revealed the behavior of Cu-MT in the kidneys of rats administered Cu-MT. Yellow and orange fluorescent signals of Cu-MT were observed in the cortex.
Mika Suzuki-Kurasaki +3 more
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Copper proteins and copper enzymes.
Ciba Foundation symposium, 1980The copper proteins that function in homeostasis, electron transport, dioxygen transport and oxidation are discussed. Particular emphasis is placed on the role of the ligands, their type and disposition which, in conjunction with other residues in the active site, determine the role of the copper ion.
Anthony E. G. Cass, H.A.O. Hill
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A copper–copper bond by intent
J. Chem. Soc., Chem. Commun., 1994The ESR spectra for a series of binuclear trigonal bipyramidal copper complexes show that the SOMO is largely composed of the two equivalent dz2 orbitals on copper; the temperature independence of the ESR parameters shows that this is a relatively strong bond, and since the unpaired electron is antibonding, the σ-bond must be even stronger; these ...
Jane L. Wyatt +3 more
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Introduction to Copper and Copper Alloys
1990Abstract Copper and copper alloys constitute one of the major groups of commercial metals due to their excellent electrical and thermal conductivities, corrosion and fatigue resistance, ease of fabrication, and good strength. This article lists the types, properties, fabrication characteristics, corrosion ratings, temper designations ...
William T. Black, Derek E. Tyler
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Forming of Copper and Copper Alloys
2006Abstract This article reviews the general characteristics of copper and copper alloys and explains how these characteristics affect the behavior of strip in different types of forming operations. These forming operations include blanking, piercing, bending, drawing and stretch forming, spinning, rubber-pad forming, and contour roll ...
Derek E. Tyler, Frank N. Mandigo
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Copper and Copper Alloy Castings
2008Abstract The properties of copper alloys occur in unique combinations found in no other alloy system. This article focuses on the major and minor alloying additions and their impact on the properties of copper. It describes major alloying additions, such as zinc, tin, lead, aluminum, silicon, nickel, beryllium, chromium, and iron.
Mahi Sahoo +2 more
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