نتایج جستجو برای: trace lead

تعداد نتایج: 402700  

2017
Christina Herland Fløtre Kristin Varsi Thea Helm Bjørn Bolann Anne-Lise Bjørke-Monsen

BACKGROUND The toxic trace elements mercury (Hg), lead (Pb), cadmium (Cd) and antimony (Sb) are transferred over the placenta to the fetus and secreted into the breastmilk. All four elements bioaccumulate in the body and as maternal age at delivery is increasing in industrialized countries, the burden of toxic trace elements in never-pregnant women of fertile age is of concern. METHODS Health...

2010
Wang-Chun Xu Hong-Fei Zhang Randall Parrish Nigel Harris Liang Guo Hong-Lin Yuan

We present geochronological evidence in the eastern Himalayan syntaxis (Namche Barwa) for high-pressure (HP) granulite-facies metamorphism and explain its importance for understanding both the deep continental subduction of the Indian plate beneath Asia and its subsequent exhumation. The timing of peak and retrograde metamorphism in part constrains these processes but is debated. We present zir...

Journal: :Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association 1998
G Bonforte M Surian B Dozio R Scanziani A Baj S Colombo F Toffoletto

Large membrane pores and large quantities of reinfusion fluids can influence the dialytic balance of trace elements in haemodiafiltration (HDF). As there are no studies in HDF with on-line produced reinfusate, we studied plasma or whole blood (*) concentrations of trace elements (Al, Cd*, Cr* and Se: microg/l; Cu, Pb* and Zn*: microg/dl) of 24 on-line HDF, 20 haemodialysis (HD) patients and 66 ...

Journal: :Annals of agricultural and environmental medicine : AAEM 2013
Anna Jurczak Jacek Brodowski Elżbieta Grochans Beata Karakiewicz Małgorzata Szkup-Jabłońska Sylwia Wieder-Huszla Bożena Mroczek Anna Włoszczak-Szubzda Anna Grzywacz

INTRODUCTION AND OBJECTIVE The level of trace elements is extremely important for the maintenance of normal functioning of the human body. The risk of disturbance of their balance increases especially dynamically during the period of menopause. The objective of the study was the effect of MHT on the levels of bioelements (Mg and Zn) in blood plasma, and toxic metals (Pb and Cd) in the whole blo...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد یزد - دانشکده شیمی 1392

krytyn triplet alkyl esters ayzvsyanydha reactions and lead to the production of acetylene is stable.

Journal: :Environmental Health Perspectives 1993
P Factor-Litvak Z Stein J Graziano

Long-term exposure to high concentrations of lead results in renal dysfunction. During a prospective study of environmental lead and pregnancy outcomes in 1502 women residing in two towns in Yugoslavia, we explored whether moderate exposure to lead results in increased rates of proteinuria. The geometric mean blood lead concentrations (BPb) were 17.1 and 5.1 micrograms/dl in the smelter and non...

Journal: :International journal of clinical and experimental medicine 2015
Liang Wang Haotian Yu Guohua Yang Yan Zhang Wenjiao Wang Tianjiao Su Weifeng Ma Fan Yang Liying Chen Li He Yuanzheng Ma Yan Zhang

Trace element levels are associated with the incidence of osteoporotic fractures, but related mechanisms remain unknown. Trace elements may interfere with growth, development and maintenance of bones. Therefore, we investigated whether plasma trace element levels are associated with bone mineral density in elderly males in Beijing. After epidemiologically investigating 91 elderly males with age...

Journal: :BMC Medicine 2009
Marcello Tonelli Natasha Wiebe Brenda Hemmelgarn Scott Klarenbach Catherine Field Braden Manns Ravi Thadhani John Gill

BACKGROUND Hemodialysis patients are at risk for deficiency of essential trace elements and excess of toxic trace elements, both of which can affect health. We conducted a systematic review to summarize existing literature on trace element status in hemodialysis patients. METHODS All studies which reported relevant data for chronic hemodialysis patients and a healthy control population were e...

Annooz ZF Mohsin A,

Background: The aim of present study was to estimate the levels of some Trace element (Lead, Copper, Cobalt, Chromium, and Cademium) concentrations in Asthenospermia and Normospermia by atomic absorption method, in comparison with control (Fertile), Estimate concentration of (MDA) Malondialdehyde and Total protein concentration in semen specimens.Also relationships between mentioned components ...

2010
Larry E. Brand

My long term goal is to understand the interactions between trace metals and phytoplankton in neritic environments. This interaction is envisioned as a two-way process: Trace metals affect the growth, species composition, and biomass of phytoplankton. In response, phytoplankton adapt to their chemical environment through natural selection by genetically altering their responses to trace metals,...

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