نتایج جستجو برای: 629 µg/g

تعداد نتایج: 1720  

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...

2009
Shensi Shen Pengtao Zhang Martin A. Lovchik

The molecular chaperone Hsp90 (heat shock protein 90) maintains the conformation, stability, and activity of several key oncogenic proteins, such as EGF receptor (EGFR), cyclin-dependent kinases, Raf, and p53, which are collectively known as Hsp90 client proteins (Whitesell and Lindquist, 2005). The chaperone function of Hsp90 requires the formation of a multichaperone complex, which is depende...

2005
William Davies Anthony Isles Rachel Smith Delicia Karunadasa Doreen Burrmann Trevor Humby Obah Ojarikre Carol Biggin David Skuse Paul Burgoyne Lawrence Wilkinson

Imprinted genes show differential expression between maternal and paternal alleles as a consequence of epigenetic modification that can result in ‘parent-of-origin’ effects on phenotypic traits1. There is increasing evidence from mouse and human studies that imprinted genes may influence behavior and cognitive functioning2. Previous work in girls with Turner syndrome (45,XO) has suggested that ...

2013
Dorothee Kümmerer Gesa Hartwigsen Philipp Kellmeyer Volkmar Glauche Irina Mader Stefan Klöppel Julia Suchan Hans-Otto Karnath Cornelius Weiller Dorothee Saur

1 Department of Neurology, University Medical Centre Freiburg, 79106 Freiburg, Germany 2 Freiburg Brain Imaging, University Medical Centre Freiburg, 79106 Freiburg, Germany 3 Language and Aphasia Laboratory, Department of Neurology, University of Leipzig, 04103 Leipzig, Germany 4 Department of Neuroradiology, University Medical Centre Freiburg, 79106 Freiburg, Germany 5 Department of Psychiatry...

2002
Ira N. Gang Kunal Sen Myeong-Su Yun IZA Bonn

Caste, Ethnicity and Poverty in Rural India This paper analyzes the determinants of rural poverty in India, contrasting the situation of the Scheduled Caste (SC) and Schedule Tribe (ST) households with the non-scheduled population. The incidence of poverty among SC and ST households is significantly higher than non-scheduled households. Using a probit decomposition analysis, we decompose the di...

2017
Neoh Hun Phuah Mohamad Nurul Azmi Khalijah Awang Noor Hasima Nagoor

BACKGROUND Cervical cancer is the fourth most frequent malignancy affecting women worldwide, but drug resistance and toxicities remain a major challenge in chemotherapy. The use of natural compounds is promising because they are less toxic and able to target multiple signaling pathways. The 1'S-1'-acetoxychavicol acetate (ACA), a natural compound isolated from wild ginger Alpinia conchigera, in...

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