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  1. Article ; Online: A Bioinformatic Study on the Potential Anti-Vitiligo Activity of a

    Trigui, Emna / Ben Hassen, Hanen / Zaghden, Hatem / Trigui, Maher / Achour, Sami

    Molecules (Basel, Switzerland)

    2023  Volume 28, Issue 22

    Abstract: ... The ... ...

    Abstract The plant
    MeSH term(s) Humans ; Vitiligo/drug therapy ; Janus Kinase Inhibitors ; Janus Kinases ; Skin ; Melanocytes
    Chemical Substances Janus Kinase Inhibitors ; Janus Kinases (EC 2.7.10.2)
    Language English
    Publishing date 2023-11-11
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules28227545
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  2. Article: A SIR-Poisson Model for COVID-19: Evolution and Transmission Inference in the Maghreb Central Regions.

    Ben Hassen, Hanen / Elaoud, Anis / Ben Salah, Nahla / Masmoudi, Afif

    Arabian journal for science and engineering

    2020  Volume 46, Issue 1, Page(s) 93–102

    Abstract: 2019-nCoV is a virulent virus belonging to the coronavirus family that caused the new pneumonia (COVID-19) which has spread internationally very rapidly and has become pandemic. In this research paper, we set forward a statistical model called SIR- ... ...

    Abstract 2019-nCoV is a virulent virus belonging to the coronavirus family that caused the new pneumonia (COVID-19) which has spread internationally very rapidly and has become pandemic. In this research paper, we set forward a statistical model called SIR-Poisson that predicts the evolution and the global spread of infectious diseases. The proposed SIR-Poisson model is able to predict the range of the infected cases in a future period. More precisely, it is used to infer the transmission of the COVID-19 in the three Maghreb Central countries (Tunisia, Algeria, and Morocco). Using the SIR-Poisson model and based on daily reported disease data, since its emergence until end April 2020, we attempted to predict the future disease period over 60 days. The estimated average number of contacts by an infected individual with others was around 2 for Tunisia and 3 for Algeria and Morocco. Relying on inferred scenarios, although the pandemic situation would tend to decline, it has not ended. From this perspective, the risk of COVID-19 spreading still exists after the deconfinement act. It is necessary, therefore, to carry on the containment until the estimated infected number achieves 0.
    Keywords covid19
    Language English
    Publishing date 2020-07-23
    Publishing country Germany
    Document type Journal Article
    ISSN 2193-567X
    ISSN 2193-567X
    DOI 10.1007/s13369-020-04792-0
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  3. Article ; Online: A SIR-Poisson Model for COVID-19

    Ben Hassen, Hanen / Elaoud, Anis / Ben Salah, Nahla / Masmoudi, Afif

    Arabian Journal for Science and Engineering ; ISSN 2193-567X 2191-4281

    Evolution and Transmission Inference in the Maghreb Central Regions

    2020  

    Keywords covid19
    Language English
    Publisher Springer Science and Business Media LLC
    Publishing country us
    Document type Article ; Online
    DOI 10.1007/s13369-020-04792-0
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  4. Article ; Online: Gendered Impacts of the COVID-19 Pandemic on Food Behaviors in North Africa: Cases of Egypt, Morocco, and Tunisia.

    Ben Hassen, Tarek / El Bilali, Hamid / Allahyari, Mohammad S / Kamel, Islam Mohamed / Ben Ismail, Hanen / Debbabi, Hajer / Sassi, Khaled

    International journal of environmental research and public health

    2022  Volume 19, Issue 4

    Abstract: The COVID-19 pandemic-related measures in the Near East and North Africa (NENA) region have resulted in many lifestyle modifications, including changes in diet and food buying patterns among adults. However, the pandemic has impacted women and men ... ...

    Abstract The COVID-19 pandemic-related measures in the Near East and North Africa (NENA) region have resulted in many lifestyle modifications, including changes in diet and food buying patterns among adults. However, the pandemic has impacted women and men differently and exacerbated existing socio-economic and gender inequalities. Indeed, numerous studies conducted worldwide have shown that the COVID-19 pandemic had a disproportionately negative impact on women compared to males. Therefore, this paper aims to analyze the effects of COVID-19 on women's food behaviors in three countries of the North Africa sub-region, namely, Egypt, Morocco, and Tunisia. The study was based on an online poll conducted by SurveyMonkey from 15 September to 5 November 2020, with 995 participants. The outcomes of the research found that when compared to men, (1) women tend to consume more food out of fear, anxiety, or boredom; (2) women prefer to eat more unhealthy food; (3) women tend to stockpile a greater amount of food; and (4) women tend to modify their shopping habits more often. The findings should inform gender-sensitive strategies and policies to address the negative impacts of the pandemic and foster transition towards healthier diets and resilient food systems during the recovery period.
    MeSH term(s) Adult ; Africa, Northern/epidemiology ; COVID-19/epidemiology ; Egypt/epidemiology ; Female ; Humans ; Male ; Morocco/epidemiology ; Pandemics ; SARS-CoV-2 ; Tunisia/epidemiology
    Language English
    Publishing date 2022-02-15
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2175195-X
    ISSN 1660-4601 ; 1661-7827
    ISSN (online) 1660-4601
    ISSN 1661-7827
    DOI 10.3390/ijerph19042192
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  5. Article ; Online: Seasonal changes in rosemary species: A chemotaxonomic assessment of two varieties based on essential oil compounds, antioxidant and antibacterial activities.

    Ben Arfa, Abdelkarim / Gouja, Hassen / Hannachi, Hédia / Isoda, Hiroko / Neffati, Mohamed / Najjaa, Hanen

    PloS one

    2022  Volume 17, Issue 8, Page(s) e0273367

    Abstract: Rosemary (Rosmarinus officinalis L.) is a popular herb in cooking, traditional healing, and aromatherapy. This study was conducted to evaluate the effects of meteorological conditions plant growth stage and genetic factors on the yield, quantitative and ... ...

    Abstract Rosemary (Rosmarinus officinalis L.) is a popular herb in cooking, traditional healing, and aromatherapy. This study was conducted to evaluate the effects of meteorological conditions plant growth stage and genetic factors on the yield, quantitative and qualitative composition, on the antioxidant and antimicrobial activities of rosemary essential oil from two Tunisian locations (El Fahs and Matmata) during two successive years. The composition of the essential oils obtained by hydrodistilation from rosemary plants were carried out annually using GC and GC/MS. Results showed the the main constituents were camphor (18.2-28.1%), 1,8-cineole (6.4-18.0%), α-pinene (9.7-13.5%), borneol (4.4-9.5%), and camphene (5.1-8.7%). The principal component and heatmapper analyses showed group segregation of the two studied varities based on major essential oil compounds. Additionally, in vitro antimicrobial and antioxidant activities showed that rosemary essential oils had an important ability in scavenging DPPH, as well as a higher bactericidal effect. The seasonal variation, growth stage and genetic pools seemed to be a factors of significant variation of the composition, antimicrobial and the antioxidant activities of the rosemary essential oils. These finding would be taken to use the chemotaxonomy tools to develop a program for Rosmary protection conservation and identification based on essential oil composition.
    MeSH term(s) Anti-Bacterial Agents/pharmacology ; Anti-Infective Agents/pharmacology ; Antioxidants/chemistry ; Antioxidants/pharmacology ; Oils, Volatile/chemistry ; Oils, Volatile/pharmacology ; Rosmarinus/chemistry ; Seasons
    Chemical Substances Anti-Bacterial Agents ; Anti-Infective Agents ; Antioxidants ; Oils, Volatile
    Language English
    Publishing date 2022-08-29
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0273367
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  6. Article ; Online: Gendered Impacts of the COVID-19 Pandemic on Food Behaviors in North Africa

    Tarek Ben Hassen / Hamid El Bilali / Mohammad S. Allahyari / Islam Mohamed Kamel / Hanen Ben Ismail / Hajer Debbabi / Khaled Sassi

    International Journal of Environmental Research and Public Health, Vol 19, Iss 2192, p

    Cases of Egypt, Morocco, and Tunisia

    2022  Volume 2192

    Abstract: The COVID-19 pandemic-related measures in the Near East and North Africa (NENA) region have resulted in many lifestyle modifications, including changes in diet and food buying patterns among adults. However, the pandemic has impacted women and men ... ...

    Abstract The COVID-19 pandemic-related measures in the Near East and North Africa (NENA) region have resulted in many lifestyle modifications, including changes in diet and food buying patterns among adults. However, the pandemic has impacted women and men differently and exacerbated existing socio-economic and gender inequalities. Indeed, numerous studies conducted worldwide have shown that the COVID-19 pandemic had a disproportionately negative impact on women compared to males. Therefore, this paper aims to analyze the effects of COVID-19 on women’s food behaviors in three countries of the North Africa sub-region, namely, Egypt, Morocco, and Tunisia. The study was based on an online poll conducted by SurveyMonkey from 15 September to 5 November 2020, with 995 participants. The outcomes of the research found that when compared to men, (1) women tend to consume more food out of fear, anxiety, or boredom; (2) women prefer to eat more unhealthy food; (3) women tend to stockpile a greater amount of food; and (4) women tend to modify their shopping habits more often. The findings should inform gender-sensitive strategies and policies to address the negative impacts of the pandemic and foster transition towards healthier diets and resilient food systems during the recovery period.
    Keywords COVID-19 ; SARS-CoV-2 ; food behavior ; food shopping ; food consumption ; food waste ; Medicine ; R
    Language English
    Publishing date 2022-02-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article: A SIR-Poisson Model for COVID-19: Evolution and Transmission Inference in the Maghreb Central Regions

    Ben Hassen, Hanen / Elaoud, Anis / Ben Salah, Nahla / Masmoudi, Afif

    Arab J Sci Eng

    Abstract: 2019-nCoV is a virulent virus belonging to the coronavirus family that caused the new pneumonia (COVID-19) which has spread internationally very rapidly and has become pandemic. In this research paper, we set forward a statistical model called SIR- ... ...

    Abstract 2019-nCoV is a virulent virus belonging to the coronavirus family that caused the new pneumonia (COVID-19) which has spread internationally very rapidly and has become pandemic. In this research paper, we set forward a statistical model called SIR-Poisson that predicts the evolution and the global spread of infectious diseases. The proposed SIR-Poisson model is able to predict the range of the infected cases in a future period. More precisely, it is used to infer the transmission of the COVID-19 in the three Maghreb Central countries (Tunisia, Algeria, and Morocco). Using the SIR-Poisson model and based on daily reported disease data, since its emergence until end April 2020, we attempted to predict the future disease period over 60 days. The estimated average number of contacts by an infected individual with others was around 2 for Tunisia and 3 for Algeria and Morocco. Relying on inferred scenarios, although the pandemic situation would tend to decline, it has not ended. From this perspective, the risk of COVID-19 spreading still exists after the deconfinement act. It is necessary, therefore, to carry on the containment until the estimated infected number achieves 0.
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #669876
    Database COVID19

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  8. Article ; Online: Genetic Markers Analyses and Bioinformatic Approaches to Distinguish Between Olive Tree (Olea europaea L.) Cultivars.

    Ben Ayed, Rayda / Ben Hassen, Hanen / Ennouri, Karim / Rebai, Ahmed

    Interdisciplinary sciences, computational life sciences

    2016  Volume 8, Issue 4, Page(s) 366–373

    Abstract: The genetic diversity of 22 olive tree cultivars (Olea europaea L.) sampled from different Mediterranean countries was assessed using 5 SNP markers (FAD2.1; FAD2.3; CALC; SOD and ANTHO3) located in four different genes. The genotyping analysis of the 22 ... ...

    Abstract The genetic diversity of 22 olive tree cultivars (Olea europaea L.) sampled from different Mediterranean countries was assessed using 5 SNP markers (FAD2.1; FAD2.3; CALC; SOD and ANTHO3) located in four different genes. The genotyping analysis of the 22 cultivars with 5 SNP loci revealed 11 alleles (average 2.2 per allele). The dendrogram based on cultivar genotypes revealed three clusters consistent with the cultivars classification. Besides, the results obtained with the five SNPs were compared to those obtained with the SSR markers using bioinformatic analyses and by computing a cophenetic correlation coefficient, indicating the usefulness of the UPGMA method for clustering plant genotypes. Based on principal coordinate analysis using a similarity matrix, the first two coordinates, revealed 54.94 % of the total variance. This work provides a more comprehensive explanation of the diversity available in Tunisia olive cultivars, and an important contribution for olive breeding and olive oil authenticity.
    MeSH term(s) Computational Biology/methods ; Genetic Markers/genetics ; Genotype ; Olea/classification ; Olea/genetics ; Phylogeny
    Chemical Substances Genetic Markers
    Language English
    Publishing date 2016-12
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2493085-4
    ISSN 1867-1462 ; 1913-2751
    ISSN (online) 1867-1462
    ISSN 1913-2751
    DOI 10.1007/s12539-016-0155-x
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  9. Article: Nutritional Requirements to Improve Delta-Endotoxins Production of Bacillus thuringiensis var. kurstaki Using Mixed Designs Modelling

    Ennouri, Karim / Hanen Ben Hassen / Nabil Zouari

    Proceedings of the National Academy of Sciences, India, Section B: biological sciences. 2017 June, v. 87, no. 2

    2017  

    Abstract: Bacillus thuringiensis kurstaki is a soil bacterium that produces insecticidal toxins called delta-endotoxins. In order to increase the toxic crystal concentrations in a low-cost culture medium and thus improve the biopesticide quality to control insect ... ...

    Abstract Bacillus thuringiensis kurstaki is a soil bacterium that produces insecticidal toxins called delta-endotoxins. In order to increase the toxic crystal concentrations in a low-cost culture medium and thus improve the biopesticide quality to control insect pests, the Plackett–Burman screening method was applied. It was shown a tool to evaluate the significance of the selected seven factors (KH₂PO₄, K₂HPO₄, MgSO₄, MnSO₄, FeSO₄, soybean meal, starch) which are necessary to the production of the delta-endotoxins. This was performed into two different shake flasks (250 and 500 ml). The main factors that affected the production of delta-endotoxins are shown to be soybean meal, starch, and FeSO₄ in 250 ml culture flasks. In 500 ml culture flasks, soybean meal and FeSO₄ are the principal factors influencing the delta-endotoxin production. The multiple linear regression, a method applied as the merging dataset of the two Plackett–Burman designs, established that soybean meal and starch are the factors positively affecting the production of delta-endotoxins, in contrast to FeSO₄. Furthermore, the available oxygen in culture flasks showed no significant negative effect on delta-endotoxin production. This study revealed that mixed method designs were useful to identify the significance and the effect of hidden culture parameters.
    Keywords Bacillus thuringiensis subsp. kurstaki ; biopesticides ; culture flasks ; culture media ; data collection ; delta-endotoxins ; dipotassium hydrogen phosphate ; ferrous sulfate ; insect pests ; magnesium sulfate ; models ; nutrient requirements ; oxygen ; potassium dihydrogen phosphate ; regression analysis ; screening ; soil bacteria ; soybean meal ; starch ; toxicity
    Language English
    Dates of publication 2017-06
    Size p. 307-314.
    Publishing place Springer India
    Document type Article
    ZDB-ID 2707745-7
    ISSN 2250-1746 ; 0369-8211
    ISSN (online) 2250-1746
    ISSN 0369-8211
    DOI 10.1007/s40011-015-0620-z
    Database NAL-Catalogue (AGRICOLA)

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  10. Article ; Online: SNP marker analysis for validating the authenticity of Tunisian olive oil.

    Ben Ayed, Rayda / Kallel, Imen / Ben Hassen, Hanen / Rebai, Ahmed

    Journal of genetics

    2014  Volume 93, Issue 3, Page(s) e148–54

    MeSH term(s) Genes, Plant ; Genetic Association Studies ; Genetic Markers ; Genotype ; INDEL Mutation ; Olea/genetics ; Olive Oil ; Plant Oils/standards ; Polymorphism, Single Nucleotide ; Quantitative Trait, Heritable
    Chemical Substances Genetic Markers ; Olive Oil ; Plant Oils
    Language English
    Publishing date 2014-12-19
    Publishing country India
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 3039-9
    ISSN 0973-7731 ; 0958-8361 ; 0022-1333
    ISSN (online) 0973-7731
    ISSN 0958-8361 ; 0022-1333
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