نتایج جستجو برای: mercury metal

تعداد نتایج: 236533  

2007
John Neustadt

ticular concern are “heavy metals,” which occur naturally in the earth’s crust and are defined in physiochemical terms as metals with a density at least 5 times as great as water. This definition translates into an approximate heavy-metal minimum density of 5, and—in addition to cadmium, lead, and mercury—the metals zinc, copper, iron, cobalt, nickel, tin, manganese, and molybdenum also qualify...

The present investigation assessed the effects of a metalloid (arsenic) and two heavy metals (cadmium and mercury), on the growth and metal accumulation in two medicinal plant species, artichoke (Cynara scolymus L.) and Savory (Satureja hortensis L.). The experiment was conducted hydroponically in spiked solution with different concentrations of arsenic (0, 20, 100, and 500 µM), cadmium (0, 10,...

2011
Hau-Ren Chen Chien-Cheng Chen A. Satyanarayana Reddy Chien-Yen Chen Wun Rong Li Min-Jen Tseng Hung-Tsan Liu Wei Pan Jyoti Prakash Maity Shashi B. Atla

The separation of mercury ions from artificially contaminated water by the foam fractionation process using a biosurfactant (surfactin) and chemical surfactants (SDS and Tween-80) was investigated in this study. Parameters such as surfactant and mercury concentration, pH, foam volume, and digestion time were varied and their effects on the efficiency of mercury removal were investigated. The re...

Journal: :Alternative medicine review : a journal of clinical therapeutic 2002
Lyn Patrick

Mercury exposure is the second-most common cause of toxic metal poisoning. Public health concern over mercury exposure, due to contamination of fish with methylmercury and the elemental mercury content of dental amalgams, has long been a topic of political and medical debate. Although the toxicology of mercury is complex, there is evidence for antioxidant protection in the prevention of neurolo...

2013
Samir Haouem Issam Chargui Mohamed Fadhel Najjar Badreddine Sriha Abdelhamid El Hani

The effect of cadmium chloride (150 mg/l) and mercury (II) chloride (80 mg/l) either alone or in combination in drinking water for 4 weeks on function and structure of the liver of male rats was studied. Results indicated that the ratio of liver weight to body weight and the activities of serum alanine aminotransferase, aspartate aminotransferase and alkaline phosphatase noted in rats co-expose...

2012
Robin A. Bernhoft

Mercury is a toxic heavy metal which is widely dispersed in nature. Most human exposure results from fish consumption or dental amalgam. Mercury occurs in several chemical forms, with complex pharmacokinetics. Mercury is capable of inducing a wide range of clinical presentations. Diagnosis of mercury toxicity can be challenging but can be obtained with reasonable reliability. Effective therapie...

2003
A. Fabich J. Lettry

A liquid metal target is one of the options for the pion production target of a n-factory. The interaction between a liquid metal and a proton beam were observed with static mercury as well as with a free mercury jet and up to 4 10 protons/bunch. The experimental method for investigating the magneto-fluid-dynamic effects of a high-velocity liquid metal in a high magnetic field magnet has been v...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی شهید بهشتی - دانشکده پزشکی 1380

چکیده ندارد.

Journal: :physical chemistry and electrochemistry 0

the major reason for the prediction of thermodynamic properties of mercury lies in the fact that itsintermolecular interactions highly depend on temperature and density. internal pressure is a good criterion toinvestigate the density dependence of the interatomic interactions. because its physical base is a forcetending to close together the molecules that is intermolecular interactions, and as...

2014
Sung-Jin Kim Sung-Woo Han Duck-Joo Lee Kwang-Min Kim Nam-Seok Joo

BACKGROUND Abnormal serum gamma-glutamyltransferase (γ-GT) may be an early and sensitive marker for oxidative stress. This study was performed to evaluate the association between serum heavy metals and γ-GT concentration. METHODS This study is a cross-sectional analysis based on data from Korean National Health and Nutrition Examination Survey (V-1, 2, 2010, 2011) regarding serum heavy metal ...

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