In a dc-magnetron discharge with argon feed gas, densities of copper atoms in the ground state Cu(S1/2) and metastable state Cu*(D5/2) were measured by resonance absorption technique, using a commercial hollow cathode lamp as light source. The operating conditions were 0.3 14 μbar argon pressure and 10 200 W magnetron discharge power. The deposition rate of copper in a substrate positioned at 1...

Using low-energy electron microscopy, we measure the diffusion of Pd into bulk Cu at the Cu(100) surface. Interdiffusion is tracked by measuring the dissolution of the Cu(100)-c(2 × 2)-Pd surface alloy during annealing (T>240 °C). The activation barrier for Pd diffusion from the surface alloy into the bulk is determined to be (1.8 ± 0.6) eV. During annealing, we observe the growth of a new laye...

Furazolidone, on complexing with DNA, led to its thermal stabilization. The increase in transition temperature of DNA (delta Tm) increased linearly with % A--T content. Increasing concentration of Cu(II) ions progressively lowered the transition temperature of DNA, but Cu(II) ions were not equally effective in lowering the transition temperature of furazolidone-DNA complex. When equimolar amoun...

In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: a b s t r a c t The reactions between Sn2.5Ag solder doped with different levels of Ni (0–0.1 wt.%) and two different types ...

The gradual elimination of chromium from wood preservative formulations results in higher Cu leaching and increased susceptibility to wood decay fungi. Finding a sustainable strategy in wood protection has become of great interest among researchers. The objective of these in vitro studies was to demonstrate the effect of T-720-enriched organic charcoal (biochar) against five wood decay basidiom...

I n s t i t u t i o n s o f h i g h e r l e a r n i n g i n t h e U n i t e d S t a t e s h a v e b e e n invo l ved i n i n te rna t i ona l ag r i cu l t u ra l ac t i v i t i es f o r decades . The p r i mary ob jec t i ve o f t he i r I nvo l vemen t has been to fos te r t he deve lopmen t o f a g r i c u l t u r e a n d i m p r o v e t h e c o n d i t i o n o f r u r a l l i f e i n d e v ...

N t e The composition and mode of attachment of Cu(II) complexes t the g-Al2O3–water interface in suspensions containing a simple mino acid (glutamate) were characterized with EXAFS and TIR spectroscopies. The spectroscopic results indicate that two ypes of Cu(II)–glutamate–alumina interactions are primarily reponsible for Cu(II) and glutamate uptake between pH 4 and 9. In cidic suspensions of ...

The Fe(II) of the binuclear Fe(II)Fe(III) active site of pig purple acid phosphatase (uteroferrin) has been replaced in turn by five M(II) ions (Mn(II), Co(II), Ni(II), Cu(II), and Zn(II)). An uptake of 1 equiv of M(II) is observed in all cases except that of Cu(II), when a second more loosely bound Cu(II) is removed by treatment with edta. The products have been characterized by different anal...

Linearly ordered tetraphosphine, meso-bis[(diphenylphosphinomethyl)phenylphosphino]methane (dpmppm), readily reacted with 4 equiv. of CuX in dichloromethane to afford octanuclear copper(I) complexes, [Cu(8)(mu-X)(8)(mu-dpmppm)(2)] (X = Cl (1a), Br (1b), I (1c)), which involve a ladder-type {Cu(8)(mu-X)(2)(mu(3)-X)(6)} core supported by two dpmppm ligands in anti arrangement. Complex 1a was furt...