Effects of Bi-Sn-Pb Alloy and Ball-Milling Duration on the Reactivity of Magnesium-Aluminum Waste-Based Materials for Hydrogen Production.

In the present study, composite materials were elaborated of mixed scrap of Mg-based casting alloys and low melting point Bi-Sn-Pb alloy by high energy ball milling, and their reactivity in NaCl solution with hydrogen release was tested. The impacts of the additive content and ball milling duration on their microstructure and hydrogen generation performance were investigated. Scanning electron microscopy (SEM) analysis revealed significant microstructural transformations of the particles during milling, and X-ray diffraction analysis (XRD) proved the formation of new intermetallic phases MgBi, MgSn, and MgPb.

Enhanced Hydrogen Generation from Magnesium-Aluminum Scrap Ball Milled with Low Melting Point Solder Alloy.

In this investigation, composite materials were manufactured of mixed scrap of Mg-based alloys and low melting point Sn-Pb eutectic by high energy ball milling, and their hydrogen generation performance was tested in NaCl solution. The effects of the ball milling duration and additive content on their microstructure and reactivity were investigated. Scanning electron microscopy (SEM) analysis indicated notable structural transformations of the particles during ball milling, and X-ray diffraction analysis (XRD) proved the formation of new intermetallic phases MgSn and MgPb, which were aimed to augment galvanic corrosion of the base metal.

[Immune disorders in extended peritonitis of gunshot origin].

The dynamics of changes of the immune homeostasis indices in a gun-shot peritonitis in 45 military service persons was studied. The patients were 27.6 years old at average.

[The choice of esophagoenteroanastomosis after gastrectomy].

The two years (2004--2006) experience of gastric cancer surgical treatment is analized and summarized. 137 had gastrectomy, 73 patients had a combined operation because of the extent of the disease. Overall morbidity rate was 19.

[The radical surgical treatment of gastric cancer, complicated with gastric bleeding].

Data of the frequency of profuse gastric bleeding occurrence as the complication of gastric cancer are presented. Considering that endoscopic hemostatic procedures are ineffective in cancer bleedings, urgent radical surgery is indicated. Results of treatment of 10 patients with acute gastric tumor bleeding are analyzed.