نتایج جستجو برای: 784  µg/g

تعداد نتایج: 1387  

2004

The impact of automobile exhaust on the levels of lead in commercially produced and sold white bread at bus terminals in Lagos, Nigeria were assessed. Total lead concentrations by Atomic Absorption Spectrometry were carried out. The mean concentration of lead in foods across the sites (T1-T10) ranged from 0.01 – 0.025 μgg; 0.01 – 0.03 μgg; 0.015 – 0.035 μgg and 0.005 – 0.025 μgg for the first, ...

2014
D. Azanu Kwame Nkrumah

Understanding the adsorption of mercury on soil from aqueous solution is necessary for tracing the fate of mercury in the environment. This study was undertaken to predict the fate of mercury emitted from artisanal gold mining activities within the Ankobra basin. Total mercury (THg) concentrations were determined in soils close to River Ankobra and its major tributaries in the south-western par...

2015
Naglaa Farag Soliman Samir Mahmoud Nasr Mohamed Abdelaziz Okbah

BACKGROUND AND AIM Mediterranean Sea, Egypt is an economically important marine environment. During the last decades there has been extensive increase in the levels of urbanization and industrialization along its coastal area. Therefore, the present work attempts to determine the status of heavy metals distribution in sediment samples, and their ecological risk assessment in the studied area. ...

2009
A. RAUF M. JAVED M. UBAIDULLAH

The present study was conducted to determine heavy metal (cadmium and chromium) concentrations in gills, kidneys, liver, skin, muscles and scales of three fish species (Catla catla, Labeo rohita and Cirrhina mrigala) from three stations viz. Lahore Siphon (Up stream), Shahdera Bridge and Baloki Headworks (Down stream) in the river Ravi, Pakistan. Heavy metal concentrations varied significantly ...

2010
Tariq Mahmood Salman Akbar Malik Syed Tajammul Hussain

Heavy metal’s release without treatment poses a significant threat to the environment. Heavy metals are non-biodegradable and persistent. In the present study the ash of water hyacinth (Eichhornia crassipes), was used to remove six metals from aqueous solutions through biosorption. Results of batch and column experiments showed excellent adsorption capacity. Removal of lead, chromium, zinc, cad...

2005
Martha R. Herbert

Social and emotional processing uses neural systems involving structures ranging from the brain stem to the associational cortex. Neuroimaging research has attempted to identify abnormalities in components of these systems that would underlie the behavioral abnormalities seen in disorders of social and emotional processing, notably autism spectrum disorders, the focus of this review. However, t...

Journal: :Journal of hazardous materials 2015
Thao Thanh Le Khanh-Hoang Nguyen Jong-Rok Jeon Arokiasamy J Francis Yoon-Seok Chang

The persistence of polychlorinated biphenyl (PCB) Aroclor 1248 in soils and sediments is a major concern because of its toxicity and presence at high concentrations. In this study, we developed an integrated remediation system for PCBs using chemical catalysis and biodegradation. The dechlorination of Aroclor 1248 was achieved by treatment with bimetallic nanoparticles Pd/nFe under anoxic condi...

بخشی, داود, حمیداوغلی, یوسف, فتاحی مقدم, جواد, فتح‌الهی, سمانه, فتوحی قزوینی, رضا, قاسم‌نژاد, محمود,

In addition to physical and chemical properties of citrus fruit, its quality depends on antioxidant compounds such as ascorbic acid, phenols, flavonoids and antioxidant enzymes. Flavonoids group, especially flavonoid glycosides are dominant in citrus, which prevent chronic diseases such as cancer and cardiovascular diseases. In this experiment, the total flavonoids, naringin, hesperidin, neohes...

2017
Do-Hyeon Kim Dong-Kyun Kim Kai Zhou Soyeon Park Yonghoon Kwon Min Gyu Jeong Nam Ki Lee Sung Ho Ryu

Department of Life Sciences, Pohang Unive 790-784, Republic of Korea. E-mail: sungho School of Interdisciplinary Bioscience an Science and Technology, Pohang, 790-784, R Integrative Biosciences and Biotechnolog Technology, Pohang, 790-784, Republic of K Department of Chemistry, Seoul National U E-mail: [email protected] † Electronic supplementary information section and supporting gures. See ...

2002

Algebraic Number Theory: • What is it? The goals of the subject include: (i) to use algebraic concepts to deduce information about integers and other rational numbers and (ii) to investigate generalizations of the integers and rational numbers and develop theorems of a more general nature. Although (ii) is certainly of interest, our main point of view for this course will be (i). The focus of t...

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