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14. Quantum tailoring of electronic properties in covalently functionalized graphene: application to ammonia gas detection

Author

Dammak, A., Raouafi, F., Cavanna, A., Rudolf, P., di Caprio, D., Sallet, V., Madouri, A., and Jancu, J. M.

Subjects
Condensed Matter - Materials Science
Abstract

Functionalized graphene offers great potential in the field of rapid detection of gases at room temperature. We performed first-principles calculations to study the suitability of 4-sulfobenzenediazonium salts (4SBD) as bandgap modifier in graphene. The signature of unpaired spins is evidenced near the Fermi level owing to the symmetry breaking of graphene sublattices. 4SBD-chemisorbed on graphene is found to be electronically sensitive to the presence of ammonia NH3 with increasing gas concentration.

Published
2023
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22. Outcomes of peripartum cardiomyopathy in North Africa: insights from a single-center observational study in Tunisia

Author

Rania Hammami, Omar Abdelhedi, Fatma Khanfir, Raeesah Sohawon Oummée Shahlaq, Rania Gargouri, Leila Abid, Sahar Elleuch, Mootez Billah Oueslati, Hassen IbnHadj Amor, Mohamed Derbel, Aymen Dammak, Faiza Safi, and Kais Chaabene

Subjects
Cardiomyopathy, Pregnancy, Heart failure, Mortality, Gynecology and obstetrics, RG1-991
Abstract

Abstract Background Peripartum cardiomyopathy (PPCM) is a rare but potentially life-threatening condition. Due to the scarcity of epidemiological data in North Africa, we conducted this study to assess the outcomes of PPCM in our region. Materials and methods This monocentric retrospective cohort study involving all patients diagnosed with PPCM was conducted between January 2010 and December 2022. Results Twenty-seven PPCM patients, with a median age of 33 years (Interquartile range (IQR) = 9), were included. 52% of patients were diagnosed during the postpartum period. Dyspnea New York Heart Association III/IV(NYHA III/IV) was the most common functional symptom (85%). The median left ventricle ejection fraction (LVEF) was 30% (IQR = 11%). Atrial fibrillation occurred in 11.1% of patients, thromboembolic complications occurred in 18.5%, Pulmonary edema occurred in 85% of patients and cardiogenic shock occurred in 14.8% of patients, with two patients requiring Extracorporeal Membrane Oxygenation (ECMO) support. The predominant mode of delivery was a cesarean Sect. (82% of patients), and the indication for a cesarean delivery was obstetrical in 59% of patients. Prematurity occurred in 36% of newborns, and intrauterine fetal death occurred in one pregnancy. The median follow-up was 24 months [6–144 months]. LVEF recovery was noted in 67% of patients. Bromocriptine was administered to six patients (22%), and none of these patients died and out of them, five patients recovered their LVEF (83%). The overall mortality rate during the follow-up period was 15%, comprising three in-hospital cardiac deaths and one occurring two years later due to refractory advanced heart failure. No significant differences were observed between LVEF recovery and LVEF non-recovery groups. Factors significantly associated with mortality were multiparity, poor antenatal care (ANC) attendance, thromboembolic events, cardiogenic shock, and Pulmonary edema. Five patients with LV recovery subsequently became pregnant, none experienced a relapse of PPCM. However, one of the descendants of a patient was diagnosed with dilated cardiomyopathy. Conclusion This study revealed that the diagnosis of PPCM in our hospital is often delayed until symptoms become more advanced, resulting in high morbi-mortality.

Published
2024
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24. Interventricular septum hydatid cyst presenting with acute lower limb ischemia: a case report

Author

Ben Jmaà Hèla, Bouassida Abir, Gueldich Majdi, Dammak Aiman, Souissi Iheb, Elleuch Nizar, Masmoudi Sayda, and Frikha Imed

Subjects
hydatidosis, embolism, interventricular septum, embolectomy, cardiopulmonary bypass, Medicine
Abstract

Cardiac hydatid cysts are rarely seen. The presentation of an acute lower limb ischemia secondary to embolization from an interventricular hydatic cyst is also rare. We describe a case of a 30-year-old-man who presented with acute lower limb ischemia revealing hydatid cyst of the interventricular septum and septal defect, and who was operated on successfully.

Published
2015
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25. Crystal structure, Hirshfeld surfaces analysis, vibrational spectroscopy, thermal behavior, and DFT study of S-triazine perchlorate

Author

Chaima Zouari, Thameur Dammak, Jerome Lhoste, Mohamed Boujelbene, and Mohamed Abdelhedi

Subjects
X-ray diffraction, Thermal analysis, Vibrational study, Hirshfeld surfaces, UV–visible absorption, DFT calculations, Chemistry, QD1-999
Abstract

The hybrid material [C3H4N3]ClO4 was synthesized at ambient temperature using a slow evaporation method. Single-crystal X-ray diffraction reveal edits monoclinic structure with a P21/n space group. Hirshfeld surface analysis elucidated the intermolecular interactions, highlighting hydrogen bonds between the S-triazine cations and tetrahedral perchlorate (ClO4−) anions. Vibrational modes were investigated using Raman and infrared spectroscopy, providing insights into the compound’s molecular structure. Thermogravimetric analysis assess edits thermal stability, while UV–Vis diffuse reflectance spectroscopy identified a significant absorption band at 304 nm (4.07 eV). Computational studies employing density functional theory (DFT) complemented the experimental findings, corroborating the material’s structural and electronic properties.

Published
2025
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26. Damage Parameters Identification Based on Experimental Data for Advanced Steel Matrix Composite

Author

Dammak, Manel, Bouhamed, Abir, Jrad, Hanen, Dammak, Fakhreddine, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Chouchane, Mnaouar, editor, Abdennadher, Moez, editor, Aifaoui, Nizar, editor, Bouaziz, Slim, editor, Affi, Zouhaier, editor, Romdhane, Lotfi, editor, and Benamara, Abdelmajid, editor

Published
2024
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27. Numerical Investigation of Shearing Processes on the Deformation Behavior of Elasto-Plastic Fe-TiB2 Composite

Author

Jrad, Hanen, Bouhamed, Abir, Dammak, Manel, Wali, Mondher, Dammak, Fakhreddine, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Chouchane, Mnaouar, editor, Abdennadher, Moez, editor, Aifaoui, Nizar, editor, Bouaziz, Slim, editor, Affi, Zouhaier, editor, Romdhane, Lotfi, editor, and Benamara, Abdelmajid, editor

Published
2024
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28. Numerical Investigation on SPIF Process of Elastoplastic Fe-TiB2 Composite

Author

Dammak, Manel, Bouhamed, Abir, Jrad, Hanen, Dammak, Fakhreddine, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Ben Amar, Mounir, editor, Ben Souf, Mohamed Amine, editor, Beyaoui, Moez, editor, Trabelsi, Hassen, editor, Ghorbel, Elhem, editor, Tounsi, Dhouha, editor, and El Mahi, Aberrahim, editor

Published
2024
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33. IPSAS Adoption in African countries: Talking or walking the talk

Author

Amel Chatti, Salma Dammak Ayadi, and Maher Jeriji

Subjects
ipsas adoption, ipsas diffusion, innovation, public sector, african region, Business, HF5001-6182, Accounting. Bookkeeping, HF5601-5689
Abstract

Research Question: How has the diffusion of IPSAS in the African region been influenced by contextual factors, external pressures, and the current status of adoption and implementation across African countries? Motivation: Africa seems to be the region where these standards have been most widely adopted. This region was at the forefront of the adoption of these standards. We have therefore chosen to plot the diffusion curve of these standards, for subsequent analysis. Idea: This paper examines the various phases of the IPSAS dissemination process in developing countries, particularly in the African region. Data: The data are secondary data collected from Studies published by professional accounting bodies such as IFAC and ACCA, as well as publications by international organizations (IMF and World Bank) were also taken into account. Tools: a qualitative method, in line with that conducted by Polzer et al. (2020), based on a literature search using the internet search on "Google" and "Google Scholar". The keywords inserted included "IPSAS and developing countries" and "IPSAS and emerging economies". The references of each resource were used to identify additional resources. Findings: IPSAS adoption in Africa takes many forms, it is indeed a priority for most of these countries. However, the diversity of implementation plans, and the absence of a centralized, coordinated approach, has made monitoring and forecasting progress rather difficult. Contribution: This research contributes to the IPSAS adoption research by examining the dissemination of these norms in African region. This article examines the diffusion and adoption of IPSAS (International Public Sector Accounting Standards) in the African region. We constructed the diffusion curve of these standards to ensure their successful dissemination. Additionally, we conducted an assessment between the announcement of the adoption decision and the actual implementation of these standards.

Published
2024
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34. Nonlinear fourth order problems with asymptotically linear nonlinearities

Author

Abir Amor Ben Ali and Makkia Dammak

Subjects
asymptotically linear, mountain pass theorem, biharmonic equation, cerami sequence, Mathematics, QA1-939
Abstract

We investigate some nonlinear elliptic problems of the form \Delta^2v + \sigma(x) v= h(x,v)\quadin \Omega,\quad v=\Delta v=0 \quadon \partial\Omega, \eqno({\rm P}) where $\Omega$ is a regular bounded domain in $\mathbb{R}^N$, $N\geq2$, $\sigma(x)$ a positive function in $L^{\infty}(\Omega)$, and the nonlinearity $h(x,t)$ is indefinite. We prove the existence of solutions to the problem (P) when the function $h(x,t)$ is asymptotically linear at infinity by using variational method but without the Ambrosetti-Rabinowitz condition. Also, we consider the case when the nonlinearities are superlinear and subcritical.

Published
2024
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39. Tribological Study of Polymer-Metal Composite Coatings Deposited onto Organic Substrates

Author

Ben Difallah, Basma, Bouaziz, Aida, Kharrat, Mohamed, Dammak, Maher, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Bouraoui, Tarak, editor, Ben Moussa, Naoufel, editor, Zemzemi, Farhat, editor, Benameur, Tarek, editor, Aifaoui, Nizar, editor, Znaidi, Amna, editor, Mzali, Slah, editor, Ennetta, Ridha, editor, and Djemal, Fathi, editor

Published
2024
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40. Non-Linear Response of an Intelligent FGP-MEE Tapered Panel

Author

Ellouz, Hajer, Bouhamed, Abir, Jrad, Hanen, Wali, Mondher, Dammak, Fakhreddine, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Chouchane, Mnaouar, editor, Abdennadher, Moez, editor, Aifaoui, Nizar, editor, Bouaziz, Slim, editor, Affi, Zouhaier, editor, Romdhane, Lotfi, editor, and Benamara, Abdelmajid, editor

Published
2024
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41. Tribological Properties of Linear Low Density Polyethylene Reinforced with Almond Shell Particles: Impact of NaOH Treatment

Author

Boujelben, M., Abid, M., Kharrat, Mohamed, Dammak, M., Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Chouchane, Mnaouar, editor, Abdennadher, Moez, editor, Aifaoui, Nizar, editor, Bouaziz, Slim, editor, Affi, Zouhaier, editor, Romdhane, Lotfi, editor, and Benamara, Abdelmajid, editor

Published
2024
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42. Finite Element Investigation on Bone Remodeling of FGM Dental Prosthesis

Author

Elleuch, Sameh, Jrad, Hanen, Wali, Mondher, Dammak, Fakhreddine, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Chouchane, Mnaouar, editor, Abdennadher, Moez, editor, Aifaoui, Nizar, editor, Bouaziz, Slim, editor, Affi, Zouhaier, editor, Romdhane, Lotfi, editor, and Benamara, Abdelmajid, editor

Published
2024
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43. Numerical Study of the Impact of Procedural Parameters on the Deformation of Fe-TiB2 Composite Throughout Deep-Drawing Operation

Author

Bouhamed, Abir, Jrad, Hanen, Wali, Mondher, Dammak, Fakhreddine, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Chouchane, Mnaouar, editor, Abdennadher, Moez, editor, Aifaoui, Nizar, editor, Bouaziz, Slim, editor, Affi, Zouhaier, editor, Romdhane, Lotfi, editor, and Benamara, Abdelmajid, editor

Published
2024
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44. Post-buckling of Shear Deformable Nanocomposite Panels

Author

Zghal, Souhir, Joueid, Najah, Dammak, Fakhreddine, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Ben Amar, Mounir, editor, Ben Souf, Mohamed Amine, editor, Beyaoui, Moez, editor, Trabelsi, Hassen, editor, Ghorbel, Elhem, editor, Tounsi, Dhouha, editor, and El Mahi, Aberrahim, editor

Published
2024
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45. Numerical Investigation on Sheet Shearing Process of an Elastoplastic Metal Material with Damage Model

Author

Allouch, Marwa, Bouhamed, Abir, Wali, Mondher, Dammak, Fakhreddine, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Ben Amar, Mounir, editor, Ben Souf, Mohamed Amine, editor, Beyaoui, Moez, editor, Trabelsi, Hassen, editor, Ghorbel, Elhem, editor, Tounsi, Dhouha, editor, and El Mahi, Aberrahim, editor

Published
2024
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46. Characterization and Identification of 5083 Aluminum Alloy Behavior: Experimental and Numerical Investigations

Author

Bouhamed, A., Jrad, H., Wali, M., Dammak, F., Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Ben Amar, Mounir, editor, Ben Souf, Mohamed Amine, editor, Beyaoui, Moez, editor, Trabelsi, Hassen, editor, Ghorbel, Elhem, editor, Tounsi, Dhouha, editor, and El Mahi, Aberrahim, editor

Published
2024
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47. Numerical Investigation on Performance of FGM Dental Implant

Author

Elleuch, Sameh, Jrad, Hanen, Wali, Mondher, Dammak, Fakhreddine, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Ben Amar, Mounir, editor, Ben Souf, Mohamed Amine, editor, Beyaoui, Moez, editor, Trabelsi, Hassen, editor, Ghorbel, Elhem, editor, Tounsi, Dhouha, editor, and El Mahi, Aberrahim, editor

Published
2024
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48. Tribological, Micromechanical and Structural Characterizations of PA66 Composites Filled Cu Micro-particles

Author

Akrout, Mabrouka, Difallah, Basma Ben, Kharrat, Mohamed, Dammak, Maher, Pereira, António, Bdikin, Igor, Duarte, Isabel, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Ben Amar, Mounir, editor, Ben Souf, Mohamed Amine, editor, Beyaoui, Moez, editor, Trabelsi, Hassen, editor, Ghorbel, Elhem, editor, Tounsi, Dhouha, editor, and El Mahi, Aberrahim, editor

Published
2024
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49. Structural Characterization of Electrodeposited Ni Coatings Filled with Graphite or MoS2 Particles

Author

Trabelsi, Dorra, Nasri, Faten, Kharrat, Mohamed, Dammak, Maher, Eyraud, Marielle, Vacandio, Florence, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Ben Amar, Mounir, editor, Ben Souf, Mohamed Amine, editor, Beyaoui, Moez, editor, Trabelsi, Hassen, editor, Ghorbel, Elhem, editor, Tounsi, Dhouha, editor, and El Mahi, Aberrahim, editor

Published
2024
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50. Morphological and Structural Characterization of Zn-Ni Electrodeposited Coatings: Effect of Sulfate Bath Parameters

Author

Nasri, Faten, Trabelsi, Dorra, Kharrat, Mohamed, Dammak, Maher, Vacandio, Florence, Eyraud, Marielle, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Ben Amar, Mounir, editor, Ben Souf, Mohamed Amine, editor, Beyaoui, Moez, editor, Trabelsi, Hassen, editor, Ghorbel, Elhem, editor, Tounsi, Dhouha, editor, and El Mahi, Aberrahim, editor

Published
2024
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