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Your search keyword '"Boujelben, Ines"' showing total 21 results
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21 results on '"Boujelben, Ines"'

2. ADAL System: Aspect Detection for Arabic Language

Author

Trigui, Sana, Boujelben, Ines, Jamoussi, Salma, Ben Ayed, Yassine, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Abraham, Ajith, editor, Shandilya, Shishir K., editor, Garcia-Hernandez, Laura, editor, and Varela, Maria Leonilde, editor

Published
2021
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8. RelANE: Discovering Relations between Arabic Named Entities

Author

Boujelben, Ines, Jamoussi, Salma, Ben Hamadou, Abdelmajid, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, Series editor, Tanaka, Yuzuru, Series editor, Wahlster, Wolfgang, Series editor, Siekmann, Jörg, Series editor, Sojka, Petr, editor, Horák, Aleš, editor, Kopeček, Ivan, editor, and Pala, Karel, editor

Published
2014
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9. Enhancing Machine Learning Results for Semantic Relation Extraction

Author

Boujelben, Ines, Jamoussi, Salma, Hamadou, Abdelmajid Ben, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Métais, Elisabeth, editor, Meziane, Farid, editor, Saraee, Mohamad, editor, Sugumaran, Vijayan, editor, and Vadera, Sunil, editor

Published
2013
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12. A hybrid method for Arabic aspect-based sentiment analysis

Author

Trigui Sana, Boujelben Ines, Jamoussi Salma, and Yassine Ben Ayed

Subjects
business.industry, Arabic, Computer science, Sentiment analysis, language, General Medicine, Artificial intelligence, business, computer.software_genre, computer, language.human_language, Natural language processing
Published
2020
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19. Virioplankton Community Structure in Tunisian Solar Salterns

Author

Universidad de Alicante. Departamento de Fisiología, Genética y Microbiología, Boujelben, Ines, Yarza, Pablo, Almansa Carrascosa, María Cristina, Villamor Serrano, Judit, Maalej, Sami, Anton, Josefa, Santos, Fernando, Universidad de Alicante. Departamento de Fisiología, Genética y Microbiología, Boujelben, Ines, Yarza, Pablo, Almansa Carrascosa, María Cristina, Villamor Serrano, Judit, Maalej, Sami, Anton, Josefa, and Santos, Fernando

Abstract

The microbial community inhabiting Sfax solar salterns on the east coast of Tunisia has been studied by means of different molecular and culture-dependent tools that have unveiled the presence of novel microbial groups as well as a community structure different from that of other coastal hypersaline environments. We have focused on the study of the viral assemblages of these salterns and their changes along the salinity gradient and over time. Viruses from three ponds (C4, M1, and TS) encompassing salinities from moderately hypersaline to saturated (around 14, 19, and 35%, respectively) were sampled in May and October 2009 and analyzed by transmission electron microscopy (TEM) and pulsed-field gel electrophoresis (PFGE). Additionally, for all three October samples and the May TS sample, viral metagenomic DNA was cloned in fosmids, end sequenced, and analyzed. Viral concentration, as well as virus-to-cell ratios, increased along the salinity gradient, with around 1010 virus-like particles (VLPs)/ml in close-to-saturation ponds, which represents the highest viral concentration reported so far for aquatic systems. Four distinct morphologies could be observed with TEM (spherical, tailed, spindled, and filamentous) but with various proportions in the different samples. Metagenomic analyses indicated that every pond harbored a distinct viral assemblage whose G+C content could be roughly correlated with that of the active part of the microbial community that may have constituted the putative hosts. As previously reported for hypersaline metaviromes, most sequences did not have matches in the databases, although some were conserved among the Sfax metaviromes. BLASTx, BLASTp, and dinucleotide frequency analyses indicated that (i) factors additional to salinity could be structuring viral communities and (ii) every metavirome had unique gene contents and dinucleotide frequencies. Comparison with hypersaline metaviromes available in the databases indicated that the viral assemb

Published
2012

20. Characterization of halo-alkaline and thermostable protease from Halorubrum ezzemoulense strain ETR14 isolated from Sfax solar saltern in Tunisia.

Author

Dammak, Donyez Frikha, Smaoui, Salma Masmoudi, Ghanmi, Fadoua, Boujelben, Ines, and Maalej, Sami

Subjects
HALOPHILIC microorganisms, PROTEOLYTIC enzymes, RIBOSOMAL RNA, NUCLEOTIDE sequence, MICROORGANISMS
Abstract

A total of 54 halophilic strains were isolated from crystallizer TS18 (26 strains) and non-crystallizer M1 (28 strains) ponds and screened for their ability to produce protease, amylase, and lipase activities. Enzymatic assays allowed the selection of thirty-two active strains, among them, the ETR14 strain from TS18 showed maximum protease production yields and therefore, selected for further analysis. The results from 16S rRNA gene sequence analysis revealed that the strain belonged to Halorubrum ezzemoulense ( Hrr. ezzemoulense) species. Further results indicated that optimum growth and protease production yields were obtained with 10-15% NaCl concentrations in the DSC-97 medium. The enzyme was also able to maintain high levels of protease activity at salt concentrations of up to 25%. While readily available carbon sources were noted to significantly reduce protease production, the combination between yeast extract and peptone enhanced protease excretion, which reached a maximum of 284 U ml−1 at the end of the exponential growth phase. The enzyme exhibited optimum activity at pH 9 and 60°C. The halophilic protease retained 87% of its initial activity after 1 h incubation at 70 °C and showed high stability over a wide range of pH, ranging from 7 to 10. This protease exhibited good temperature, pH, and salinity tolerance, which distinguishes it from other proteases previously described from other members of the holoarchaea genera and makes it a promising candidate for application in various industries. [ABSTRACT FROM AUTHOR]

Published
2016
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