نتایج جستجو برای: long term metals concentration

تعداد نتایج: 1394329  

Mahdieh Esmaeli Dehaghi, Mahnaz Qomi, Parisa Ziarati, Zahra Mousavi,

Background:The use of herbal or medicinal plants in various forms has been popular for thousands of years. It is estimated that about 70–80% of the world’s population relies on alternative medicine, mainly of herbal origin. However, due to the nature and sources of these plants, they are sometimes contaminated with toxic heavy metals, which pose serious health risks to consumers. Herbal formula...

Journal: Pollution 2017

Urban horticulture is of growing importance in developing and developed countries around the world; however, contamination of urban horticultural products can exceed the precautionary values, posing significant human health risks due to dietary exposure to high levels of the pollutants. In this study, samples of rhizosphere soil and corresponding vegetables have been collected from an urban gar...

Amin Jahangard, Behzad Shahmoradi, Lobat Taghavi, Soheil Sobhanardakani,

Background: Iran is located within the dry and semi dry regions, thus almost 90% of the required water is secured via the use of groundwater. Owing to the increasing pollution of water resources, this study was performed to evaluate water quality pollution indices for heavy metals (As, Zn, Pb and Cu) contamination monitoring in Toyserkan Plain during spring and summer in 2012. Methods: A tot...

Journal: :Indian journal of experimental biology 1999
V I Paul M V Radhakrishnan S Hemalatha

A study to monitor marine pollution with reference to trace elements (Fe, Zn, Mn and Cu) on T. attenuata, commonly called as screw shell over a period of one year on the whole body and various organs, viz. digestive diverticula, foot, mantle and ovary was conducted from the sandy beach of Porto Novo Coast (Lat 11 degrees 29' N Long: 79 degrees 46' E) of Peninsular India using Atomic Absorption ...

Journal: :Minerals 2022

After long-term accumulation, weathering and rainfall of metals non-metals in tailings ponds, the chemical composition will change, surface heavy may gradually migrate to bottom layer, thus showing a cumulative effect. At present, distribution cyanide vertical space has not been reported. In this work, 12 sampling points were arranged for pond by grid method Jilin, China. The contents determine...

Journal: :iranian red crescent medical journal 0
mohammad hassan karimfar department of anatomy, faculty of medicine, zahedan university of medical sciences, zahedan, ir iran afshar bargahi the persian gulf marine biotechnology research centre, bushehr university of medical sciences, bushehr, ir iran darab moshtaghi departments of surgery, faculty of medicine, bushehr university of medical sciences, bushehr, ir iran parviz farzadinia department of biology and anatomical sciences, faculty of medicine, bushehr university of medical sciences, bushehr, ir iran; department of biology and anatomical sciences, faculty of medicine, bushehr university of medical sciences, p. o. box: 3631, bushehr, ir iran. tel /fax: +98-7733450692

results long-term exposure to lead acetate caused histopathology effects including dilatation, congestion, nuclei heterochromatic effects, increase in diameter of renal tubules and urinary barrier thickness in rabbit renal tissue. conclusions quantitative and qualitative results of long-term lead acetate exposure showed many histopathology side-effects, especially in the urinary barrier. materi...

Long-term care (LTC) must be carefully delineated when expenditures are compared across countries because how LTC services are defined and delivered differ in each country. LTC’s objectives are to compensate for functional decline and mitigate the care burden of the family. Governments have tended to focus on the poor but Germany opted to make LTC universally available ...

the investment horizons of institutional investors can affect monitoring incentives which might ultimately make an impact on firm CSR decisions. Hence, this paper investigates the effects of institutional investor’s investment horizons on CSR activities.This research has been carried out using annual data of companies accepted in Tehran Stock Exchange during the period of 2011-2018. By screenin...

Ali Gorji, Ali Jahanbazi Jahan-Abad , Nasim Shah Hamzei,

Synaptic plasticity in the central nervous system (CNS) of mammals has been discussed for many years. Several forms of synaptic plasticity of mammal’s CNS have been identified, such as those that occur in long-term potentiation (LTP). Different types of LTP have been observed in distinctive areas of the CNS of mammals. The hippocampus is one of the most important areas in the CNS that pla...

Abdollahi, A. , Mollahassani-pour, M. , Nikbakhsh, S. , Rashidinejad, M. ,

Preventive maintenance scheduling of generating units is addressed as a long-term scheduling in power system studies aiming to increase the reliability incorporating cost reduction. It consists of knowing which generating units should be shut down for regular safety inspection. In this paper, a new formulation of preventive maintenance scheduling associated with cost reduction index (CRI) is pr...

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