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Evaluation of Risk Sechage-Humidification of a Clay Soil of Algiers: The Case Study of the Argillaceous Marnes
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作者 Fatma Zohra Aissiou Ammar Nechnech 《Journal of Earth Science and Engineering》 2012年第9期554-560,共7页
Consecutive differential movements of ground to the dryness and the rehydration of the sols are irregular movements of ground related to the phenomenon of withdrawal-swelling. By risk of withdrawal-swelling, one under... Consecutive differential movements of ground to the dryness and the rehydration of the sols are irregular movements of ground related to the phenomenon of withdrawal-swelling. By risk of withdrawal-swelling, one understands the phenomenon "natural" likely to occur, with a probability of more or less large occurrence. For the phenomenon of withdrawal-swelling of the argillaceous grounds, one will speak about strong, average or weak risk. This article returns within the framework's study of risk withdrawal-swelling or dryness-humidification of the argillaceous Mames of the area of Ouled Fayet and Cheraga of Algiers. 展开更多
关键词 Dryness-humidification RISK argillaceous Marnes of algiers.
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High prevalence of multidrug-resistance in Acinetobacter baumannii and dissemination of carbapenemase-encoding genes bla_(OXA-23-like),bla_(OXA-24-like)and bla_(NDM-1) in Algiers hospitals 被引量:20
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作者 Khadidja Khorsi Yamina Messai +2 位作者 Moufida Hamidi Houria Ammari Rabah Bakour 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2015年第6期439-447,共9页
Objective:To assess and characterize antibiotic resistance in Acinetobacter baumannii strains recovered from 5 health-care facilities in Algiers.Methods:Antibiotic susceptibility testing was performed by agar diffusio... Objective:To assess and characterize antibiotic resistance in Acinetobacter baumannii strains recovered from 5 health-care facilities in Algiers.Methods:Antibiotic susceptibility testing was performed by agar diffusion and agar dilution methods,resistance genes were identified by PCR and sequencing,and molecular typing of isolates was carried out by enterobacterial repetitive intergenic consensus-PCR(ERIC-PCR).Results:Among 125 tested isolates,117(93.6% ) were multidrug-resistant.of which 94(75.2% ) were imipenem resistant.The bla_(ADC)and bla_(OXA-51-like) genes were detected in all isolates,in association with ISAba I sequence in 84% and 8% (imipenem resistant) of isolates,respectively.The bla_(OXA-23-like) and bla_(OXA-24-like)carbapenemase genes were delected in 67.02% and 20.21% of imipenem-resistant isolates,respectively.The bla_(OXA-23-like) gene is linked to ISAba1 or ISAba4 elements.The metallo-β-lactamase NDM-1 gene was found in 10(10.6% ) imipenem-resisianl strains from three hospitals,it is linked to ISAba125 clement in nine strains.Extended spectrum β-lactamases production was not detected.Imipenem and cefotaxime resistance phenolypes could not be transferred to Escherichia coli by conjugation.Outer membrane protein CarO gene was not delected in four imipenem-resisianl isolates.The aac(6')-1b.sul1,sul2,tetA and tetB genes were present in 5.31% .36.17% .77.65% .1.06% and 65.92% of strains,respectively.Class 1 integrons were detected in 23.4% strains.KRIC-PCR typing showed a genetic diversity among bla_(OXA-23-like) and bla_(OXA-24-like) positive strains,while clonality was observed among bla_(NDM-1)positives.Conclusions:This study highlighted the high prevalence of imipenem resistance in Acinetobacter baumannii in Algiers hospitals mediated mainly by bla_(OXA-23-like),bla_(OXA-24-like),and bla_(NDM-1) genes. 展开更多
关键词 Acinetobacter baumannii MULTIDRUG-RESISTANCE CARBAPENEMASE bla_(OXA-23-like) bla_(OXA 24 like) bla_(NDM-1) carO Hospital algiers
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