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159 results for “contaminate”
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Research ArticleOpen accessIn the abstractRAPID DEGRADATION OF AZO DYES USING NANO-SCALE ZERO VALENT IRONNabila Rahman, Zainal Abedin, M. Ali HossainIn the present study, nano-scale Zero Valent Iron (NZVI) was synthesized in ethanol medium by the method of ferric iron reduction using sodium borohydride as a reducing agent under atmospheric conditions. The obtained iron nanoparticles are mainly in zero valent oxidation state and remain without significant oxidation for hours. A systematic characterization of NZVI was performed using XRD, SEM and … …American Journal of Environmental Sciences, Vol. 10, Issue 2 · 8 Apr 2014 · 8,605 accessesView PDFCite
Research ArticleOpen accessIn the abstractSCANNING ELECTRON MICROSCOPE IMAGING OF AMYLOID FIBRILSEisuke Takai, Gai Ohashi, Ryuichi Ueki et al.This study demonstrated the applicability of Scanning Electron Microscopy (SEM) for the observation of amyloid fibrils without staining. As model specimens, two types of amyloid fibrils with different shapes and chemical compositions were controllably synthesized from hen lysozyme. The apparent fibril widths in the SEM images were considerably larger than the original diameters analyzed by the conventional techniques of Transmission … …American Journal of Biochemistry and Biotechnology, Vol. 10, Issue 1 · 1 Mar 2014 · 10,337 accessesView PDFCite
Research ArticleOpen accessIn the abstractSELECTIVE ISOLATION OF A GRAM NEGATIVE CARBAMATE PESTICIDE DEGRADING BACTERIUM FROM BRINJAL CULTIVATED SOILDilara Islam Sharif, Mithun MollickA bacterial species having the ability to grow in the presence of carbosulfan pesticide “Marshall” was isolated from Solanum melongena (brinjal) cultivated soil in Khulna region, Bangladeh, having a history of pesticide usage. The strain was morphologically and biochemically identified to belong to the genera Pseudomonas. A comparative study of growth of this strain with other isolated bacteria showed its … …American Journal of Agricultural and Biological Sciences, Vol. 8, Issue 4 · 24 Sep 2013 · 7,455 accessesView PDFCite
Research ArticleOpen accessIn the abstractMonstrous Hazards Produced by High Radioactivity Levels Around Assiut Thermal Power PlantHany El-Gamal, Mohamed El-Azab Farid, Abdulla Ibrahim Abdel Mageed et al.The natural radioactivity level of heavy oil, ash and soil samples around Assiut Thermal Power Plant (ATPP) in Egypt was determined using gamma ray spectrometry. The average concentrations of 226Ra, 232Th and 40K in fly ash were found to be 2307±143, 1281±80 and 1218±129 Bq kg-1, respectively, while the corresponding values in soil samples were 2670±107, 1401±78 and 1495±100 Bq … …American Journal of Environmental Sciences, Vol. 9, Issue 5 · 17 Sep 2013 · 6,971 accessesView PDFCite
Research ArticleOpen accessIn the abstractAntibiogram of Bacteria Isolated from Kunun-Zaki Drink Sold in Keffi MetropolisMakwin Danladi Makut, Mary Azumi Nyam, Smart Obumneme Obiekezie, Aisha Eleojo AbubakarKunun-zaki drink is a locally prepared indigenous non-alcoholic beverage that is widely produced and consumed in Nigeria. Standard microbiological methods were employed to isolate bacteria from Kunun-zaki drink sold in Keffi metropolis, Nasarawa State, Nigeria. Samples of Kunun-zaki drink were collected from ten (10) different locations and their bacteriological loads were determined in terms of total bacterial counts using standard … …American Journal of Infectious Diseases, Vol. 9, Issue 3 · 9 Sep 2013 · 8,464 accessesView PDFCite
Research ArticleOpen accessIn the abstractStudy for Improving an Duong Lake Water Quality for Chi Lang Nam Stork Island Conservation and Ecotourism DevelopmentTran Yem, Nguyen Xuan Hai, Nguyen Manh Khai, Nguyen Xuan HuanAn Duong Lake has been selected for the study to its important role in storks’ and cauldrons’ habitat protection, fishery and ecotourism of Hai Duong Province and particularly Thanh Mien District. Qualitative and quantitative methods were used throughout the research. The overall purpose of this study is to find out some mitigating measures for improving water quality of An Duong … …American Journal of Environmental Sciences, Vol. 9, Issue 3 · 10 Jun 2013 · 7,322 accessesView PDFCite
Research ArticleOpen accessIn the abstractComparison of Heavy Metals Contents for Some Cigarettes BrandsLucien Agbandji, Edorh A. Patrick, Georges B. Gbago et al.According certain studies, smoking could be associated with an increase of health risk link to heavy metals and these risks would be more important in developed countries. So, this study attempted to verify these informations throuth the comparison of the levels of lead (Pb), cadmium (Cd) nickel (Ni) and arsenic (As) in some cigarettes sold in Benin and France. Composite … …American Journal of Pharmacology and Toxicology, Vol. 7, Issue 4 · 21 Feb 2013 · 8,508 accessesView PDFCite
Research ArticleOpen accessIn the abstractAntibiogram of Bacteria Isolated from Automated Teller Machines Within Abakaliki MetropolisOkoro Nworie, Mbaba Mercy, Anyim Chukwudi et al.The Automated Teller Machine (ATMs) is likely to be contaminated with various microorganisms due to their vast dermal contact by multiple users. The metallic keypads of ATMs were examined to investigate their potentials as source of bacterial contamination and also the antibiogram of the isolated organisms. The study lasted from August, 2012 to October, 2012 involving several procedures like culturing, … …American Journal of Infectious Diseases, Vol. 8, Issue 4 · 9 Feb 2013 · 8,783 accessesView PDFCite
Research ArticleOpen accessIn the abstractBacteriological Examination of Computer Keyboards and Mouse Devices and Their Susceptibility Patterns to DisinfectantsOnochie Charles Chimezie, Anyim Chukwudi, Alo Moses Nnaemeka et al.Computers are ubiquitous and have been shown to be contaminated with potentially pathogenic bacteria in some communities. There is no economical way to test all the keyboards and mouse out there, but there are common-sense ways to prevent bacterial contamination or eliminate it if it exists. In this study, swabs specimens were collected from surfaces of 250 computer keyboards and … …Current Research in Microbiology, Vol. 4, Issue 1 · 19 Jan 2013 · 13,518 accessesView PDFCite
Research ArticleOpen accessIn the abstractHydrocarbons in Soil from Basra Oil-Rich GovernorateAli Abdul Al-Zahra Douabul, Wisam Abdul Ameer Farid, Hamid Talib Al-Saad, Sama Sameer AlMaarofiBasra is a rich-oil region; its soil is expected to be contaminated with petroleum hydrocarbons. However, there is no previous study that has estimated the levels of hydrocarbons in Basra soil. After 2003 numerous operations by several international oil companies are underway. Therefore, the determination of background levels of petroleum hydrocarbons is a priority from environmental point of view. The … …American Journal of Environmental Sciences, Vol. 8, Issue 5 · 18 Sep 2012 · 7,892 accessesView PDFCite