the dehdasht bauxite deposits are located 40 km northeast of dehdasht in kohgilouye and boyer-ahmad province. it is a part of the irano-hymalayan karstic bauxite belt located in the upper part of karstic depressions of santonian-turonian sarvak carbonate formation. the aim of this study is to determine various geneses of pisoliths and prevalent processes in bauxitization. for this purpose, labo...

primary localized amyloidosis of eyelid is a localized type of amyloidosis without evidence of systemic involvement. we report a 75-year-old man suffering of unilateral (left) ptosis due to upper eyelid mass with bony consistency. eye examination revealed upper lid mass attached to tarsus. no ocular infection or inflammation was found. pathologist reported diffuse distribution of eosinophilic h...

Geoenvironmental models were formulated by the U.S. Geological Survey in 1990s to describe potential environmental effects of extracting different types ore deposits geologic and climatic regions. This paper presents a geoenvironmental model for roll-front (roll-type) uranium Texas Coastal Plain. The reviews descriptive quantitative information derived from studies existing databases depict con...

The paper reviews and summarizes data on the physicochemical parameters chemical features of mineralizing fluids at porphyry deposits Cu–Mo–Au system. calculated average values ranges in mineral-hosted fluid inclusions are as follows: temperature 90–957 °C, 388 °C; salinity 0.1–88.0 wt % equiv. NaCl, 29.4 NaCl; density 0.38–1.85 g/cm3, 0.93 g/cm3. highest maximum homogenization temperatures wer...

Porphyry systems supply most copper and significant gold to our economy. Recent studies indicate that they are frequently associated with high Sr/Y magmatic rocks, but the meaning of this association remains elusive. Understanding the association between high Sr/Y magmatic rocks and porphyry-type deposits is essential to develop genetic models that can be used for exploration purposes. Here we ...

We demonstrate an unusually intensive accumulation of prion protein (PrP) on neuronal membranes in hamsters infected with the Echigo-1 panencephalopathic strain of Creutzfeldt-Jakob disease. This stands in strong contrast with the poor vacuolation in this model. Several distinct patterns of PrP(TSE) deposit were observed in the brain. The first type consisted of a fine granular "synaptic"/diffu...

Mutations in keratoepithelin are associated with blinding ocular diseases, including lattice corneal dystrophy type 1 and granular corneal dystrophy type 2. These diseases are characterized by deposits of amyloid fibrils and/or granular non-amyloid aggregates in the cornea. Removing the deposits in the cornea is important for treatment. Previously, we reported the destruction of amyloid fibrils...