نتایج جستجو برای: chemical exposure
تعداد نتایج: 668608 فیلتر نتایج به سال:
Günlük hayatta tüketilen pek çok gıda, kozmetik ve tekstil ürünü ile yapım üretim aşamalarında kullanılan binlerce kimyasal maddeye maruz kalınmaktadır. Bu maddelerin çoğunluğu sağlık açısından yeterince araştırılmış etkileri ortaya konmuş değildir. Üreticilerin yaklaşımı “zararlı olduğu kanıtlanmadıkça kullanımı uygundur” görüşüdür ki, bu oldukça risk teşkil eden bir yaklaşımdır. İşlem gören ü...
Background: Although idiopathic azoospermia is a common reason for male infertility, the known etiological factors for this disease are remarkably very little. Recent evidences suggest that some occupational physical and chemical hazards could have negative effects on reproductive function and semen quality parameters of exposed workers. This study conducted to compare demographic characteristi...
Correspondence to: Dr S Semple, Department of Environmental & Occupational Medicine, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, UK; [email protected] _________________________ T he study of occupational and environmental exposure to chemicals has traditionally focussed on the quantity of dust, aerosol, or vapour inhaled. This has been driven by the high historic prevalence of...
We review pharmacokinetic and pharmacodynamic factors that should be considered in the design and interpretation of developmental neurotoxicity studies. Toxicologic effects on the developing nervous system depend on the delivered dose, exposure duration, and developmental stage at which exposure occurred. Several pharmacokinetic processes (absorption, distribution, metabolism, and excretion) go...
Interactions between two or more toxic agents can produce lung damage by chemical-chemical interactions, chemical-receptor interactions or by modification, by a first agent, of the cell and tissue response to a second agent. Interactions may occur by simultaneous exposure and if exposure to the two agents is separated in time. Chemical-chemical interactions have been mostly studied in the toxic...
Corophium volutator (Pallas) has been recommended by the paris Commission as one of the standard species for testing chemical used in offshore oil and gas exploration/production. In the present study, gut contents of Corophium volutator have been analysed by electron probe microanalysis (EPMA) for BaSO4 and other heavy metal impurities after exposure tto spiked sediments followin...
Sulfur mustard is the most widely used chemical agent in the Iran-Iraq war .In a retrospective cohort study of 1337 soldiers with a history of sulfur mustard exposure, factors such as age, smoking habits, number of exposure episodes and the use of gas masks were determined, together with an assessment of their relationship with the occurrence of long-term pulmonary complications. The models sug...
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