Gold-coated silver wire was developed to alleviate the high cost of Au used in semiconductor packaging. Ball-bonding and stitch-bonding techniques were fabricate dummy packaging material, comprising 97.3 % Ag, 97.3% Au-Coated 99.99 %Au wires. The ball shear test (BST), pull (BPT), microstructural attributes ultrasonic bonding interfaces compared with initial properties, both before after highly...

Ag-exchanged Y zeolites (Si/Al = 2.5; Ag/Al 0.30–0.95) have been tested in the NH 3 –SCO reaction, most promising method for elimination of ammonia emissions, and deeply characterized before after reaction by using a variety techniques (XRD, TEM, UV–Vis, 109 Ag NMR, XAS spectroscopies). The active centres are 0 nanoparticles (NPs) formed under reduction conditions both activity selectivity to N...

The effect of human secretory immunoglobulin A (S-IgA) and serum antibodies to surface protein antigen (Ag) 1I/ on the adherence of Ag VII-bearing Streptococcus mutans and of free Ag VII to saliva-coated hydroxyapatite (SHA) was investigated. The inhibition by S-IgA of binding of both S. mutans and free Ag IJI to SHA was dependent on antibody to Ag VII. Essentially no difference was found betwe...

The preparation of pure zeolite nanocrystals (EMT-type framework) and their silver ion-exchanged (Ag(+)-EMT) and reduced silver (Ag(0)-EMT) forms is reported. The template-free zeolite nanocrystals are stabilized in water suspensions and used directly for silver ion-exchange and subsequent chemical reduction under microwave irradiation. The high porosity, low Si/Al ratio, high concentration of ...

A new synchrotron-based technique for elemental imaging that combines radiography and fluorescence spectroscopy has been developed and applied to study the spatial distribution of Ag, Zr and Mo in an Al alloy during heating and melting to 700, and then re-soldification. For the first time, multi-element distributions have been mapped independently and simultaneously, showing the dissolution of ...

Analysis of elements content in honey is important for honey quality and safety and for monitoring of environmental pollution. The levels of 22 elements, aluminum (Al), barium (Ba), calcium (Ca), cadmium (Cd), chromium (Cr), cobalt (Co), iron (Fe), copper (Cu), potassium (K), magnesium (Mg), manganese (Mn), nickel (Ni), sodium (Na), lead (Pb), strontium (Sr), silver (Ag), bismuth (Bi), gallium ...

Systemically or centrally administered agmatine (decarboxylated arginine) prevents, moderates, or reverses opioid-induced tolerance and self-administration, inflammatory and neuropathic pain, and sequelae associated with ischemia and spinal cord injury in rodents. These behavioral models invoke the N-methyl-D-aspartate (NMDA) receptor/nitric-oxide synthase cascade. Agmatine (AG) antagonizes the...