Only one case report concerning allergic alveolitis caused by polyester powder paint has been published previously. The aim of this study was to determine whether phthalic anhydride (PA) or trimellitic anhydride (TMA) is the alveolitis-causing agent in such paint. A 61 year old woman showed recurrent symptoms of chills, cough, and fever whilst at work. She was working in a plant where epoxy pol...

BACKGROUND Injuries due to high-pressure injections are frequently underestimated occupational accidents, which may have disabling outcomes. METHODS The occupational injuries logbooks of two shipyards were examined. Twelve accidents due to the utilization of high-pressure equipment were reported. Data were obtained by reviewing the employers' logbooks and hospital records. RESULTS Contamina...

In this study, different coatings (gray epoxy primer, white varnish and red alkyd paint) of 7075 aluminum alloy are cleaned with a 500 W continuous-wave (CW) fiber laser. We analyzed the influence laser power density on temperature evolution target surface morphology. Under condition continuous irradiation for 1 s, experimental results indicated that suitable cleaning thresholds primer varnish,...

Copper-based epoxy and ablative antifouling painted panels were exposed in natural seawater to evaluate environmental loading parameters. In situ loading factors including initial exposure, passive leaching, and surface refreshment were measured utilizing two protocols developed by the US Navy: the dome method and the in-water hull cleaning sampling method. Cleaning techniques investigated incl...

pet wastes from post consumer bottles can be chemically degraded into some compounds such as oligomers and some monomers such as bishydroxy ethyl terephthalate(bhet)by some catalysts(zn, co, pb and mn acetates) in ethylene glycol at 189 oc under n2 atmospheric pressure. the compounds obtained in the chemical depolymerization can be used as plasticizers in paint, fibbers, rubbers and plastic ind...

Trace metals, especially copper, are commonly occurring contaminants in harbors and marinas. One source of copper to these environs is copper-based antifouling coatings used on vessel hulls. The objective of this study was to measure dissolved copper contributions from recreational vessel antifouling coatings for both passive leaching and hull cleaning activities. To accomplish this goal, three...

BACKGROUND Construction painters have not been studied well in terms of their hazards exposure. The objective of this study was to evaluate the exposure levels of total volatile organic compounds (TVOCs) for painters in the construction industry. METHODS Activity-specific personal air samplings were carried out in three waterproofing activities [polyurethane (PU), asphalt, and cement mortar] ...