the contents of as, cd, cu and mo were determined in soil surrounding meyduk tailings dam based on 21 surface soil samples. assessment of toxic element pollution in studied soil samples needs knowledge of pre-anthropogenic metal concentration to act as a reference against which measured values could be compared. estimating the background values was executed by sampling rocks adjacent to soil sa...

BACKGROUND Cyclophosphamide is one of the most commonly used chemotherapy drugs worldwide. Data concerning environmental contamination and biological exposure of pharmacy personnel to this and other chemotherapy drugs are limited. OBJECTIVES To determine whether pharmacy personnel involved in preparing and checking cyclophosphamide doses were more likely to have detectable levels of this drug...

this study was conducted with the aim of determining surface water contamination with cysts of entamoeba histolytica using pcr in rasht city, northern iran.in this cross-sectional study, 49 water samples including 18 rivers and 6 wetlands were collected from different regions near the city of rasht in autumn of 2012. after filtration using 0.22 μm nitrate cellulose membrane filters, the samples...

The introduction of the euro has revived interest in the risk of nickel allergy due to the handling of coins. In the present work, the transfer of metallic contamination during the manipulation of coins is examined by means of leaching experiments and manipulation tests. It is shown that pre-existing metallic species present on the surface of the coins are the major source of contamination duri...

BACKGROUND The Dijon University Hospital in Dijon, France is involved in a large construction program with heavy truck traffic and a very dusty environment. This study aimed to assess the impact of outdoor hospital construction work on Aspergillus air contamination in the immediate environment of patients at high risk for aspergillosis in the presence of protective measures. METHODS Prospecti...

In the VUV spectrum we see a significant decrease in reflection due to organic contamination on the surface of mirrors. To study VUV mirrors it is requisite to have calibration standards. Such standards are useless as calibration tools if the surface has organic contamination. For our standard, we use a thermally oxidized silicon wafer with a 27 nm oxide overlayer. We found that silicon wafer s...

........................................................................................................................2 INTRODUCTION...............................................................................................................3 THE NATIONAL MAIZE ECONOMY.............................................................................4 GUATEMALA’S AGRICULTURE AND MAIN MAIZE PRODUC...

Sewage contamination of our ground and surface waters is a major public health concern. Current indicator bacteria, such as Escherichia coli and enterococci, can naturalize in subtropical and tropical environments, ergo better indicator organisms are needed. Furthermore, current indicator bacteria do not discriminate between contamination sources, and hence the application of microbial source t...

The wettability of solid surfaces is of fundamental scientific interest and related to many diverse chemical and physical phenomena at the heart of practical technologies. In particular, the hydrophilicity of the photocatalytically active metal-oxide TiO2 has attracted considerable attention for many applications. However, the intrinsic hydrophilicity of Ti-oxide surfaces is not fully understoo...