Abstract Background Chronic obstructive pulmonary disease (COPD) is a common, preventable, and treatable disease that is characterized by persistent respiratory symptoms and airflow limitation that is due to airway and/or alveolar abnormalities usually caused by significant exposure to noxious particles or gasses.An acute exacerbation of COPD refer
Electric-arc furnace dust (EAFD) is a by-product of steel production and recycling.This fine-grained material contains high amounts of zinc and iron as well as significant amounts of potentially toxic elements such as lead, cadmium and chromium.Therefore, the treatment and stabilization of this industrial residue is necessary.Concrete is greygasms
This paper deals with analysis of current problems in the motor fuel market.It analyzes bottlenecks in setting the legislative changes in value added tax, excise tax and the legislation concerning fuels.The biggest problem is tax evasions that favor one group of business Leisure al90d230k 90cm Electric Range Cooker Induction Top entities at the exp