this research was conducted from july 1993 to june 1994 on the total population (711 workers) of a glass factory. the purpose of this study was to determine the quantitative free silica (quartz) in respiratory zone of workers in glass industry. field samples including 50 samples total dust and 37 samples respirable dust and standard simplex were collected on membrane filters using skc dust samp...

Introducción. Debido a los escasos estudios que hay respecto al funcionamiento cognitivo de pacientes con enfermedad renal crónica (ERC), especialmente comparar trasplantados reciben tratamiento hemodiálisis, se realizó el presente trabajo. Objetivo. Comparar en personas ERC postrasplante riñón y sanas. Método. Se utilizaron pruebas neuropsicológicas estandarizadas (MoCa Test, Figura Rey Token ...

The anomalous enrichment of the rare earth elements and yttrium (REY), U, Mo, As, Se, V in coal-bearing intervals intercalated within carbonate successions South China has attracted much attention due to highly promising recovery potential for these elements. This study investigates mineralogical geochemical characteristics late Permian (layers A–F) marine strata Xian’an Coalfield Guangxi Provi...