نتایج جستجو برای: for preventing groundwater and soil from heavy metal contamination andor to decrease contamination

تعداد نتایج: 20840360  

Journal: :محیط شناسی 0
کبری جعفری دانش آموخته ی زمین شناسی زیست محیطی دانشگاه پیام نور مشهد ناصر حافظی مقدس عضو هیئت علمی گروه زمین شناسی دانشگاه فردوسی مشهد علیرضا مظلومی عضو هیئت علمی گروه زمین شناسی دانشگاه پیام نور مشهد اعظم قزی دانش آموخته ی دکترای زمین شناسی مهندسی دانشگاه فردوسی مشهد

introduction landfilling sites of wastes including big volume of waste. in recent years lack correct management caused that landfilling sites of municipal waste taken as one of main source pollution effluence at environmental. from between diverse contaminants heavy metals because of environmental stability, biogeochemical process, poison biology, sorption and desorption, redox potential, sedim...

Journal: :iranian journal of pharmaceutical research 0
n faeizya

lead, cadmium, mercury and arsenic are the most important heavy metals which may cause health risks following consumption of contaminated foods. table salt is one the mostly used food additive with unique place in food consumption. although purified table salt is expected to have lower level of contamination, some iranians still prefer to use rock salt. use of rock salt for food purposes has be...

Background: Due to the increasing pollution of water resources, this study was carried out for evaluation of water quality pollution indices for monitoring of heavy metals (As, Zn, Pb and Cu) contamination in Ghahavand Plain, Hamadan Province, Western Iran during spring and summer 2012. Methods: Totally, 20 ground water wells were chosen randomly. The samples were filtered (0.45 μm) and m...

Journal: :journal of chemical health risks 0
majid mohammadhosseini department of chemical engineering, college of basic science, shahrood branch, islamic azad university, shahrood, iran hooman bahmanpour department of chemical engineering, college of basic science, shahrood branch, islamic azad university, shahrood, iran saeedeh lotfi department of chemical engineering, college of basic science, shahrood branch, islamic azad university, shahrood, iran

this study was mainly designed to investigate and identify the amounts and types of heavy metals in the soils of national iranian oil refining & distribution company in shahrood region and tried to establish a logical relation between the presence of heavy metals and their damage on vegetation. in addition, considering the power of drained soil and due to the proximity of ground water in shahro...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده علوم انسانی 1389

this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...

AM Cheraghali F Kobarfard N Faeizya

Lead, cadmium, mercury and arsenic are the most important heavy metals which may cause health risks following consumption of contaminated foods. Table salt is one the mostly used food additive with unique place in food consumption. Although purified table salt is expected to have lower level of contamination, some Iranians still prefer to use rock salt. Use of rock salt for food purposes has be...

2017
Bifeng Hu Songchao Chen Jie Hu Fang Xia Junfeng Xu Yan Li Zhou Shi

Rapid heavy metal soil surveys at large scale with high sampling density could not be conducted with traditional laboratory physical and chemical analyses because of the high cost, low efficiency and heavy workload involved. This study explored a rapid approach to assess heavy metals contamination in 301 farmland soils from Fuyang in Zhejiang Province, in the southern Yangtze River Delta, China...

Journal: :پژوهش های محیط زیست 0
روح اله میرزایی دانشجوی دکتری، دانشکده منابع طبیعی، دانشگاه تربیت مدرس عباس اسماعیلی ساری استاد دانشکده منابع طبیعی، دانشگاه تربیت مدرس هادی قربانی استادیار دانشکده کشاورزی، دانشگاه صنعتی شاهرود ناصر حافظی مقدس دانشیار دانشکده علوم زمین، دانشگاه صنعتی شاهرود محمودرضا همامی استادیار دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان حمیدرضا رضایی استادیار دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان

heavy metal contamination has been and continues to be a worldwide phenomenon that heavy metals in the soil have an effect on environment and food quality, and may threaten human health. no information is currently available on the distribution pattern of heavy metals concentration in soils of golestan province. the objective of this research was to determine the spatial distribution of cd, as,...

Background & Aims of the Study: Heavy metals are the most important contaminants in the soil. Due to their non-biodegradable property, heavy metals can persist in the ecosystem for a long time. Therefore, this research focuses on heavy metal contamination in urban park soils in Asadabad, Hamedan, Iran. Materials & Methods: Altogether 18 composite soil samples were collect...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده ریاضی 1393

in this thesis, a structured hierarchical methodology based on petri nets is used to introduce a task model for a soccer goalkeeper robot. in real or robot soccer, goalkeeper is an important element which has a key role and challenging features in the game. goalkeeper aims at defending goal from scoring goals by opponent team, actually to prevent the goal from the opponent player’s attacks. thi...

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