Simultaneous exposure of humans to a number of chemicals may produce toxicity which is different than that seen if the exposure to these compounds were sequential. If there is more than one toxic compound in the mixture, their toxicity may be greater than additive, additive, or less than additive. Which of these alternatives occurs depends on a complex set of factors among which are the ability...

The opening chapter on the examination of the urine is particularly full and good, all the chief tests, both qualitative and quantitative, being given. The second chapter, dealing with the examination of the blood, includes the differential leucocyte count, the detection of the presence of the more important blood nara?iif-p<? WirM'^ reaction, etc. With regard to this latter, the form of glass ...

INTRODUCTION Oxidative stress (OS) is considered a significant contributor to male infertility. A number of laboratory techniques have been developed to evaluate oxidative stress in the semen. We review these tests and their current use. METHODS A literature review was performed utilizing the PubMed search engine for articles studying OS etiology and impact on male fertility, and the laborato...

seismic behavior of a rockfill dam with asphalt-concrete core has been studied utilizing numerical models with material parameters determined by laboratory tests. the case study selected for these analyses, is the meyjaran asphalt core dam, recently constructed in northern iran, with 60 m height and 180 m crest length. the numerical analyses have been performed using a nonlinear three dimension...