نتایج جستجو برای: in particular mercury

تعداد نتایج: 16994155  

A. H. Ahmed, I. M. Maulood

Urotensin-II (U-II), the most potent vasoconstrictor that has recently been recognized as a new candidate in cardiovascular dysfunction, might exert vasoconstriction through, at least partially, potassium channels that are predominant in both endothelial and vascular smooth muscle cells (VSMCs). The present study was designed to evaluate the roles of potassium channels in vascular responses to ...

Mercury is a carcinogenic and teratogenic compound that tends to accumulate in water solutions. In this research, the removal of mercury from an aqueous solution was evaluated by using palm leaves. Experiments were performed to study the adsorption efficiency, the effect of the adsorbent amount, the balance time, the adsorbate concentration, and the pH on mercury removal. The experimental appar...

Journal: :jundishapur journal of health sciences 0
nadereh rahbar department of medicinal chemistry, nanotechnology research center, faculty of pharmacy, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of medicinal chemistry, faculty of pharmacy, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of medicinal chemistry, faculty of pharmacy, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel: +98-6133738378, fax: +98-6133738381 zahra ramezani department of medicinal chemistry, nanotechnology research center, faculty of pharmacy, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of medicinal chemistry, faculty of pharmacy, ahvaz jundishapur university of medical sciences, ahvaz, ir iran zahra mashhadizadeh department of medicinal chemistry, nanotechnology research center, faculty of pharmacy, ahvaz jundishapur university of medical sciences, ahvaz, ir iran

conclusions experimental results showed that mcns is an excellent sorbent for removal of mercury ions from petrochemical waste water. in addition, highly complex matrix of this waste does not affect the adsorption capability of mcns. results an effective hg (ii) removal (99.8%) was obtained at ph 6, with 50 mg of mcns for an initial concentration of this ion in petrochemical waste water (5.63 m...

Journal: :iranian journal of toxicology 0
جابر اعظمی jaber aazami department of environment, faculty of natural resources and marine science, tarbiat modares university, noor, iran عباس اسماعیلی ساری abbas esmaili-sari department of environment, faculty of natural resources and marine science, tarbiat modares university, noor, iran سید محمود قاسم پوری seyed mahmoud ghasempouri department of environment, faculty of natural resources and marine science, tarbiat modares university, noor, iran نادر بهرامی فر nader bahramifar department of environment, faculty of natural resources and marine science, tarbiat modares university, noor, iran

background: present study was carried out in north of iran to investigate the concentration of mercury (hg) as one of the most toxic metals in tissues of two species of birds. methods: in this study, 15 birds from coot (fulica atra) and 18 birds from cormorant (phalacrocorax carbo) were hunted in anzali and gomishan wetlands. data-analyses carried out using spss software version 17 licenced by ...

Journal: :medical journal of islamic republic of iran 0
farideh golbabaie from the department of occupational health, school of public health, p.o. box 6446-14155 tehran, islamic republic of iran. parvin nassiri mahmoud mahmoudl

in order to assess the risk for mercury poisoning in dentists, urine specimens were collected and analysed from 250 dentists (190 male, 60 female). subject data and pertinent health symptoms were asked via a questionnaire. the results indicate that the mean and standard deviation of mercury values were 51.3± 38.0 µg/l, while 27.2 percent of dentists had levels within normal limits (0-19 µg/l). ...

2014
Alissa Monk Kate Charlton-Robb Saman Buddhadasa Ross M. Thompson

Globally it is estimated that up to 37% of all marine mammals are at a risk of extinction, due in particular to human impacts, including coastal pollution. Dolphins are known to be at risk from anthropogenic contaminants due to their longevity and high trophic position. While it is known that beach-cast animals are often high in contaminants, it has not been possible to determine whether levels...

Journal: :Archives of environmental contamination and toxicology 1998
K Kannan R G Smith R F Lee H L Windom P T Heitmuller J M Macauley J K Summers

Concentrations of total mercury and methyl mercury were determined in sediment and fish collected from estuarine waters of Florida to understand their distribution and partitioning. Total mercury concentrations in sediments ranged from 1 to 219 ng/g dry wt. Methyl mercury accounted for, on average, 0.77% of total mercury in sediment. Methyl mercury concentrations were not correlated with total ...

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 ...

Journal: :Medicina 2017
Liudmyla M Sokurenko Mariya O Savchyna Viktor I Litus Rostyslav F Kaminsky Yurii B Сhaikovsky

BACKGROUND AND OBJECTIVE Mercury pollution is one of the most pressing environmental problems. Therefore, the impact of mercury on human body, the nervous system in particular, remains topical. The aim of the study was to identify the morphological characteristics of neurons and neuroglia in spinal ganglia of rats receiving antioxidants in the presence of small doses of mercury (II) chloride. ...

2008
D. ACCOTO V. MATTOLI A. MENCIASSI PAOLO DARIO

In the last decades the awareness of scientists, decision makers and citizens about the ubiquitous and toxic nature of mercury in the environment has considerably grown. The complexity of the environmental problem related to mercury is increased because of the volatile nature of this metal, which results in global dispersion through the atmosphere and deposition in the sea and freshwater bodies...

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