INTRODUCTION Mucoepidermoid carcinoma of the tracheobronchial tree is rare. Such tumors usually present with signs and symptoms of bronchial obstruction. Histologically, they can be classified as high-grade or low-grade tumors. Experience of imaging these tumors with 18fluorodeoxyglucose positron emission tomography-computed tomography (18F-FDG PET-CT) is limited. We present three cases of this...

2,2′ : 6′,2“-Terpyridine-4′-carboxylic acid (tpycH) reacts with uranyl cations under solvo-hydrothermal conditions to give [UO2(tpyc)2] ⋅ 2H2O (1), a monoperiodic polymer different from that previously reported. In the additional presence of NiII cations, Ni(tpyc)2 “expanded ligand” is formed and structure its complexes cation depends on anions present. [(UO2)2F4(H2O)2Ni(tpyc)2] (2) [UO2(mds)(H...

Incorporation of heavy metal ions in cement hydrates is great interest for the storage and immobilization toxic, hazardous, radioactive wastes using cementitious matrix. Magnesium silicate hydrate (M-S-H) a low pH alternative binder to commonly used Portland cement. Low cements have been considered as promising matrix municipal nuclear waste last decades. It however crucial assure that incorpor...