• Photoemission study of the electronic structure of LaFeAsO 1-xFx and LaFePO1-xFx 

  Malaeb, Walid; Yoshida, Teppei; Kataoka, Takashi; Fujimori, Atsushi; Kubota, Masato; Ono, Kanta; Usui, Hidetomo; Kuroki, Kazuhiko; Arita, Ryotaro; Aoki, Hideo (2008)

  We have performed a photoemission spectroscopy study of the newly discovered iron-based superconductors LaFeAsO1-xFx and LaFePO1-xFx. The valence-band spectra show a narrow Fe 3d-derived band near EF indicating the itinerant ...
• Electronic Structure and Electron Correlation in LaFeAsO1-xFx and LaFePO1-xFx 

  Malaeb, Walid; Yoshida, Teppei; Kataoka, Takashi; Fujimori, Atsushi; Kubota, Masato; Ono, Kanta; Usui, Hidetomo (2008)

  Photoemission spectroscopy is used to investigate the electronic structure of the newly discovered iron-based superconductors LaFeAsO 1- x F x and LaFePO 1- x F x . Line shapes of the Fe 2 p core-level spectra suggest an ...
• A Central Finite Volume Surface Gradient Method for the Two-Layer Shallow Water Equations with Rigid Lid 

  Touma, Rony; Lteif, Ralph (Springer, 2025-02-07)

  We develop here a new formulation of the two-layer shallow water equations with rigid-lid on variable-bottom topography. This formulation is presented as a conservative system where the function describing the geometry of ...
• High order ImEx method for the shallow water model 

  Kazolea, Maria; Parisot, Martin; Lteif, Ralph (2025-01-13)

  This poster is devoted to the development and analysis of a robust and efficient high order numerical scheme for the shallow water flows in the low Froude number limit. We focus on ocean and coastal simulations at different ...
• A Numerical Scheme for the Propagation of Internal Waves in an Oceanographic Model 

  Bourdarias, Christian; Gerbi, Stéphane; Lteif, Ralph (Springer, 2017-05-24)

  In this paper , we introduce a new reformulation of the Green-Naghdi model in the Camassa-Holm regime for the propagation of internal waves over a flat topography to improve the frequency dispersion of the original model. ...
• Modeling and mathematical analysis of models in oceanography 

  Lteif, Ralph (Université Grenoble Alpes ; École doctorale des Sciences et de Technologie (Beyrouth), 2018-01-10)

  This thesis is dedicated to the modeling and the mathematical analysis of asymptotic models used in oceanography describing the propagation of internal waves at the interface between two layers of fluids of different ...
• Mathematical modeling and numerical analysis for the higher order Boussinesq system 

  Khorbatly, Bashar; Lteif, Ralph; Israwi, Samer; Gerbi, Stéphane (2022-03)

  This study deals with higher-order asymptotic equations for the water-waves problem. We considered the higher-order/extended Boussinesq equations over a flat bottom topography in the well-known long wave regime. Providing ...
• An efficient second order ImEx scheme for the shallow water model in low Froude regime 

  Lteif, Ralph; Kazolea, Maria; Parisot, Martin (2024)

  This paper presents the development and analysis of a second order numerical method tailored for shallow water flows in regimes characterized by low Froude numbers. The focus is on modeling oceanic and coastal dynamics ...
• An operator-splitting approach with a hybrid finite volume/finite difference scheme for extended Boussinesq models 

  Lteif, Ralph (2024-02)

  In this paper, we present a hybrid numerical scheme combining finite volume and finite difference methods (FV/FD), for solving two extended Boussinesq-type (BT) models. We propose two new reformulations specially designed ...
• Well-balanced numerical resolution of the two-layer shallow water equations under rigid-lid with wet–dry fronts 

  Lteif, Ralph (2022-03-15)

  In this paper, we present a well-balanced numerical scheme for the frictional two-layer shallow water equations (2LSWE) over variable bottom topography and under a rigid-lid (RL) to simulate internal waves propagating over ...
• Medium amplitude model for internal waves over large topography variation 

  Lteif, Ralph; Khorbatly, Bashar (2022-10-15)

  The purpose of this paper is to present the derivation and mathematical analysis of a new asymptotic model that describes the evolution of medium amplitude internal waves propagating between a flat rigid-lid and a highly ...
• A new class of higher-ordered/extended Boussinesq system for efficient numerical simulations by splitting operators 

  Lteif, Ralph; Gerbi, Stephane (2022-11-01)

  In this work, we numerically study the higher-ordered/extended Boussinesq system describing the propagation of water-waves over flat topography. A reformulation of the same order of precision that avoids the calculation ...
• Coupled and scalar asymptotic models for internal waves over variable topography 

  Lteif, Ralph; Samer, Israwi (2018-01-22)

  The Green–Naghdi type model in the Camassa–Holm regime derived in [Comm. Pure Appl. Anal. 14(6) (2015) 2203–2230], describe the propagation of medium amplitude internal waves over medium amplitude topography variations. ...
• A numerical scheme for an improved Green–Naghdi model in the Camassa–Holm regime for the propagation of internal waves 

  Bourdarias, Christian; Gerbi, Stéphane; Lteif, Ralph (2017-10)

  In this paper we introduce a new reformulation of the Green–Naghdi model in the Camassa–Holm regime for the propagation of internal waves over a flat topography derived by Duchêne et al. [18]. These new Green–Naghdi systems ...
• Impact of Bariatric Surgery on the Healthy Eating Index, Binge Eating Behavior and Food Craving in a Middle Eastern Population: A Lebanese Experience 

  Jabbour, Jana; Awada, Dalia; Naim, Nour; Al-Jawaldeh, Ayoub; Haidar Ahmad, Houssein; Mortada, Hussein; Hoteit, Maha (2021-10-21)

  Even though bariatric surgeries (BS) are on the rise in Lebanon and the Middle East, the changes in diet quality, binge eating, and food cravings in this region are poorly studied peri-operatively. This cross-sectional ...
• Suboptimal dietary knowledge predicts lower diet quality for cancer prevention among university students in Beirut 

  Jabbour, Jana; Dandache, Rodeina; Al Slaybe, Maryam; Mattar, Lama Haisam; Rizk, Rana (2025-01-03)

  University students are at a pivotal stage of shaping cancer risk factors. Little is known about their dietary behavior in Lebanon, a country heavily burdened by cancer. This cross-sectional study assessed the dietary ...
• Development and validity of the ‘Modified Mediterranean Prime Screen’ to assess dietary intake among women of reproductive age in Lebanon 

  Assaad, Mariam; Ajjour, Sara; Rahme, Maya; Al-Shaar, Laila; Sakr, May; Ghattas, Hala; El-Hajj Fuleihan, Ghada; Jabbour, Jana (2024-07-28)

  The Mediterranean Region registers an increasing prevalence of obesity. The region lacks a diet screener to assess obesogenic nutrients. This study aimed to evaluate the reproducibility and validity of the Modified ...
• Cancer survivors’ adherence to the American cancer society and American institute of cancer research dietary guidelines in Lebanon 

  Jabbour, Jana; El Helou, Remie; Hadla, Ruba; Azar, Riwa; Mezher, Maria; Naja, Farah; Temraz, Sally (2024-10-08)

  Background Adequate diet and lifestyle practices are postulated to improve health and enhance wellbeing of cancer survivors. Despite the heavy cancer burden in Lebanon, little is known about the diet quality of survivors. ...
• Can plasma vitamin C predict survival in stage IV colorectal cancer patients? Results of a prospective cohort study 

  Temraz, Sally; Jabbour, Jana; Nassar, Farah; El Helou, Remie; Hadla, Ruba; Mezher, Maria; El Lakkiss, Ahmed; Charafeddine, Maya; Nasr, Rihab; Shamseddine, Ali (2023-03-06)

  Background and Aims: In light of the inconclusive evidence on the association between vitamin C status and colorectal cancer (CRC) outcome, this study assessed the prognostic value of vitamin C in participants with metastatic ...
• Malnutrition and gender disparities in the Eastern Mediterranean Region: The need for action 

  Jabbour, Jana; Khalil, Merette; Ronzoni, Anna Rita; Mabry, Ruth; Al-Jawaldeh, Ayoub; El-Adawy, Maha; Sakr, Hala (2023-03-07)

  Malnutrition takes a heavy toll on the populations of the Eastern Mediterranean Region (EMR), with gender related socioeconomic risk factors impacting undernutrition and obesity in both women and men. This perspective ...

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