Lead Toxicity: Problems of Definition and Laboratory

Investigation of acute toxicity of lead-manganese mixture to fish under laboratory conditions

The aim of this study was to investigate acute toxicity (96-hr LC50 and lethal concentrations) of waterborne metal mixture (Pb+Mn) for the fish, Catla catla, Labeo rohita, Cirrhina mrigala, Ctenopharyngodon idella and Hypophthalmichthys molitrix. The extent of metals bio- accumulation in fish body organs viz. gills, liver, kidney, fins, bones, muscle and skin at both 96-hr LC50 and lethal conce...

problems and strategies of translating persian lexical collocations into english: the case of noun-verb and noun-adjective collocations

در محیط های دانشگاهی ایران ، آموزش ترجمه واژگان هم آیند که به منزله امری لاینفک برای دانش جویان رشته مترجمی زبان می باشد، تا حدود زیادی نادیده گرفته شده است . این واقعیت باعث شده است تا دانش جویان رشته مترجمی زبان در ترجمه ی واژگان هم آیند اشتباهات بسیاری مرتکب شوند. این پژوهش توجه ویژه ای به ترجمه واژگان هم آیند داشته است. برای مشخص نمودن مشکلات و استراتژی های مورد استفاده ی دانش جویان در ترجم...

Lead toxicity.

BACKGROUND Since the last In-Depth Review of lead toxicity in 2004 there have been further developments with regard to safe exposure levels for lead workers. AIMS To advise occupational health professionals of the latest research on the multi-system toxic effects of lead and the implications of this research for setting new safe and appropriate occupational suspension limits. METHODS An ext...

Diet and lead toxicity.

Introduction There is no known biological function for lead and any lead absorbed by man or by animal may be classified as potentially toxic. These toxic effects are many, ranging from morphological damage to tissues at higher concentrations, to lesser biochemical effects at lower concentrations. In biochemical systems lead will generally inhibit enzyme activity and result in clinical effects s...

Lead extraction: Definition standards