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...

Mussel shells are potential bioarchives of proxies for changes in the physicochemical conditions in the bivalve’s habitat. One such proxy is the distribution of rare earths and yttrium (REY) in seawater, as REY speciation in seawater is sensitive to pH and temperature variations, due to the impact of these parameters on the activity of CO 3 in seawater. We present a new protocol for sample prep...

Abstract Fly and bottom ash (FABA) produced primarily from coal combustion in a coal-fired power plant consists of fine particles the organic inorganic mixture trace elements. Eight FABA samples plants Java, Indonesia, had been collected for composition rare earth element Yttrium (REY) mode occurrence identification. The geochemical both major elements was determined by inductively coupled plas...

The distribution of the rare earths and yttrium (REY) in co-existing hydrous Mn oxides and Fe oxides that form marine hydrogenetic ferromanganese crusts is used to better describe the partitioning and fractionation of the REY between these (hydr)oxides and seawater in the natural marine system. Four fractions (easily exchangeable, Mn-oxide-bound, Fe-oxidebound, and insoluble-residue-bound REY) ...

Nine hundred and forty-three children (487 boys and 456 girls, age range 8 to 17 years, divided into 10 age cohorts) were administered the Hebrew version of the Rey AVLT. Separate norms for boys and girls in each age group are reported. Sensitivity to age for 14 memory measures extracted from the Rey AVLT was analyzed. One of the most consistent findings across the different scores is that memo...

in seawater. We present a new protocol for sample preparation and determination of REY concentrations in bivalve shells, that includes sample treatment with NaOCl followed by REY separation and preconcentration. The data obtained was further used to calculate REY partition coefficients between shells of M. edulis and ambient seawater, and acquired results were then used in the investigation of ...

a Fisioterapia, Patología Neurológica, Facultad de Ciencias de la Salud, Universidad Rey Juan Carlos, Madrid, Spain b Fisioterapia, Patología Neurológica, Departamento de Fisioterapia, Terapia Ocupacional, Medicina Física y Rehabilitación, Facultad de Ciencias de la Salud, Universidad Rey Juan Carlos, Madrid, Spain c Medicina Física y Rehabilitación, Departamento de Fisioterapia, Terapia Ocupac...

Studies have shown that attractive people have higher earnings. In this paper, we test the hypothesis that physical attractiveness may be a proxy for unobserved productivity. We compare the impact of attractiveness on grades in college courses where instructors can directly observe the student’s appearance to courses where they do not. We confirm that appearance matters: attractive female stude...