52. An Historic Stone Bowl.

Bowl-to-bowl inversion of sumanene derivatives.

The bowl-to-bowl inversion of the non-planar bowl-shaped compounds derived from sumanene as a fullerene C3v fragment was found to be slow and tuned by a solvent, and the benzylic mono- and di-anions inverted even more slowly.

An historic meeting.

Design and testing of artificial stone for the restoration of stone elements in monuments and historic buildings

Different structural parts of monuments and historic buildings were based on stone as the main building material, such as masonry and foundation, while many types of stones were also used for decorative, architectural elements, such as reliefs, cornices, corbels, colonnettes. The preservation of stone elements is crucial for the continuity of these structures. Mortar on the other hand is an art...

Surface-assisted bowl-in-bowl stacking of nonplanar aromatic hydrocarbons.

Bowl-in-bowl stacking of buckybowls on a copper surface is observed via scanning tunneling microscopy (STM) at low temperatures and characterized by density functional theory (DFT) calculations.

An impacted biliary stone

The most common cause of biliary obstruction is choledocholithiasis. Endoscopic sphincterotomy is the preferred therapy for retained common bile duct stones. However, stones may pass spontaneously or get impacted at the ampulla [1]. Recent data suggest that precut sphincterotomy is a safe and effective technique that facilitates impacted stone extraction [2]. A 60-year-old man was admitted due ...