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School of Arts and Sciences: Recent submissions

  • Bioinspired design of redox-active ligands for multielectron catalysis 
    Khnayzer, Rony S.; Jurss, Jonah W.; Panetier, Julien A.; El Roz, Karim A.; Nichols, Eva M.; Head-Gordon, Martin; Long, Jeffrey R.; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    Mononuclear metalloenzymes in nature can function in cooperation with precisely positioned redox-active organic cofactors in order to carry out multielectron catalysis. Inspired by the finely tuned redox management of these ...
  • Photocatalytic hydrogen production at titania-supported Pt nanoclusters that are derived from surface-anchored molecular precursors 
    Khnayzer, Rony S.; Thompson, Lucas B.; Zamkov, Mikhail; Ardo, Shane; Meyer, Gerald J.; Murphy, Catherine J.; Castellano, Felix N.; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    Degussa P-25 TiO2 bearing surface-anchored Pt(dcbpy)Cl2 [dcbpy = 4,4′-dicarboxylic acid-2,2′-bipyridine] prepared with systematically varied surface coverage produced Pt0 nanoparticles under bandgap illumination in the ...
  • Structure and activity of photochemically deposited “CoPi” oxygen evolving catalyst on titania 
    Khnayzer, Roni S.; Mara, Micheal W.; Huang, Jier; Shelby, Megan L.; Chen, Lin X.; Castellano, Felix N.; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    The cobalt phosphate “CoPi” oxygen evolving catalyst (OEC) was photochemically grown on the surface of TiO2 photoanodes short-circuited to a Pt wire under bandgap illumination in the presence of Co(NO3)2 and sodium phosphate ...
  • Bis(carbazolyl) derivatives of pyrene and tetrahydropyrene 
    Khnayzer, Rony S.; Wex, Brigitte; El-Ballouli, Alaa O.; Trattnig, Roman; Fonari, Alexandr; Sax, Stefan; Kaafarani, Bilal R.; Risko, Chad; BArlow, Stephen; Patra, Digambara; Timofeeva, Tatiana V.; SAS; 200501196; 200603698; Natural Sciences; rony.khnayzer@lau.edu.lb; brigitte.wex@lau.edu.lb; Lebanese American University
    Tetrahydropyrene and pyrene have been functionalized in their 2,7-positions with carbazole and 3,6-di-tert-butylcarbazole groups, and the properties of these new compounds are compared to analogous carbazole and ...
  • Improving the catalytic activity of semiconductor nanocrystals through selective domain etching 
    Khnayzer, Rony S.; Lambright, Kelly; Khon, Elena; Moroz, Pavel; Perera, Dimuthu; Butaeva, Evgeniia; Lambright, Scott L.; Castellano, Felix N.; Zamkov, Mikhail; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    Colloidal chemistry offers an assortment of synthetic tools for tuning the shape of semiconductor nanocrystals. While many nanocrystal architectures can be obtained directly via colloidal growth, other nanoparticle ...
  • Robust cuprous phenanthroline sensitizer for solar hydrogen photocatalysis 
    Khnayzer, Rony S.; McCusker, Catherine E.; Olaiya, Babatunde S.; Castellano, Felix N.; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    The Cu(I) metal-to-ligand charge-transfer complex, [Cu(dsbtmp)2]+ (dsbtmp = 2,9-di(sec-butyl)-3,4,7,8-tetramethyl-1,10-phenanthroline), exhibits outstanding stability as a visible-light-absorbing photosensitizer in ...
  • Catalytic proton reduction with transition metal complexes of the redox-active ligand bpy2PYMe 
    Khnayzer, Rony S.; Nippe, Micheal; Panetier, Julien A.; Zee, David Z.; Olaiya, Babatunde S.; Head-Gordon, Martin; Chang, Christopher J.; Castellano, Felix N.; Long, Jeffrey R.; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    A new pentadentate, redox-active ligand bpy2PYMe has been synthesized and its corresponding transition metal complexes of Fe2+ (1), Co2+ (2), Ni2+ (3), Cu2+ (4), and Zn2+ (5) have been investigated for electro- and ...
  • Getting to the (square) root of the problem 
    Khnayzer, Rony S.; Haefle, Alexandre; Blumhoff, Jorg; Castellano, Felix N.; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    We present experimental data illustrating that photochemical upconversion based on sensitized triplet–triplet annihilation can exhibit anti-Stokes emissions whose intensities with respect to the excitation power can vary ...
  • The role of hole localization in sacrificial hydrogen production by semiconductor–metal heterostructured nanocrystals 
    Khnayzer, Rony S.; Acharya, Krishna P.; O'Connor, Timothy; Diedrich, Geoffrey; Kirsanova, Maria; Klinkova, Anna; Roth, Daniel; Imbodent, Martene; Zamkov, Mikhail; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    The effect of hole localization on photocatalytic activity of Pt-tipped semiconductor nanocrystals is investigated. By tuning the energy balance at the semiconductor–ligand interface, we demonstrate that hydrogen production ...
  • Upconversion-powered photoelectrochemistry 
    Khnayzer, Rony S.; Blumhoff, Jorg; Harrington, Jordan A.; Haefle, Alexandre; Deng, Fan; Castellano, Felix N.; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    Upconversion photochemistry occurring between palladium(II) octaethylporphyrin (PdOEP, 1) and 9,10-diphenylanthracene (DPA, 2) in toluene successfully sensitizes nanostructured WO3 photoanodes (Eg = 2.7 eV) to sub-bandgap ...
  • Exploring the changing role of education under the influence of global neoliberal reforms in Lebanon. (c2017) 
    Mashtoub, Zeina; MA in Education; SAS; 200901763; Nabhani, Mona; Natout, Mahmoud; Education; Bahous, Rima; zeina.mashtoub@lau.edu; Lebanese American University (Lebanese American University, )
    This qualitative research aims to explore if and how neoliberal ideals- such as skills regarded necessary for the increase in market productivity and pertinent for prospective jobs, are influencing the education sector. ...
  • Changes and effects of the Syrian civil war on the Syrian-American diaspora. (c2017) 
    Bissar, Racha El; MA in International Affairs; SAS; 201305887; Rowayheb, Marwan; Ouaiss, Jennifer Skulte; Social Sciences; Ouaiss, Makram; racha.elbissar@lau.edu; Lebanese American University (Lebanese American University, )
    The Syrian conflict, which originated as a rebellion against the regime and descended into civil war has had grave repercussions and has affected people in a wide geographical area. It has also had its impact on the Syrian ...
  • The perceived impact of school leadership style on teachers' motivation. (c2017) 
    Younes, Hanaa Ibrahim; MA in Education; SAS; 200701811; Nabhani, Mona; Bahous, Rima; Education; Natout, Mahmoud; hanaa.younes@lau.edu; Lebanese American University (Lebanese American University, )
    Leadership style of an administrator has a great impact on teachers’ motivation, which affects their effectiveness at work. Accordingly, this study investigates teachers' perceptions of the impact of their head of division’s ...
  • Women's peacemaking and peacebuilding in lebanon. (c2017) 
    Masri, Yassmin El; MA in International Affairs; SAS; 201206419; Baroudi, Sami; Ouaiss, Makram; Social Sciences; Ouaiss, Jennifer Skulte; yassmin.elmasri@lau.edu; Lebanese American University (Lebanese American University, )
    This thesis seeks to identify the factors that influence the role women played in the peace process, both during the conflict and in the immediate post-conflict period (1990-1995) in Lebanon. It maps examples of women’s ...
  • The giant mutant. (c2017) 
    Issa, Patricia I.; MA in International Affairs; SAS; 201200350; Baroudi, Sami; Tabar, Paul; Social Sciences; Rowayheb, Marwan; patricia.issa@lau.edu; Lebanese American University (Lebanese American University, )
    As the Arab Spring was sweeping away one regime after the other in the Arab World during the years 2010-2011; the eyes of the world were centered on the modern media outlets that were carrying and reporting the news. ...
  • Exploring the motivations and incentives behind language teacher professional development, and the perceived effects on language learners. (c2017) 
    Masri, Wafica El; MA in Education; SAS; 200702367; Nabhani, Mona; Harati, Lina; Education; Bahous, Rima; wafica.elmasri@lau.edu; Lebanese American University (Lebanese American University, )
    Research on language teachers’ motivation for continuing professional development is limited and infrequent, and much less on language teachers in Lebanon. This study aims to explore the motivations and incentives of ...
  • Typing and whole-genome sequencing of Brucella isolated from clinical samples in Lebanon. (c2016) 
    Abou Zaki, Natalia; MS in Molecular Biology; SAS; 201400187; Khalaf, Roy; Wex, Brigitte; Natural Sciences; Tokajian, Sima; natalia.abouzaki@lau.edu; Lebanese American University (Lebanese American University, )
    Brucella is a Gram-negative intracellular bacterium that causes brucellosis characterized by several symptoms including fever, nausea and myalgia. Routes of infection include direct contact through skin or mucous membranes, ...
  • Evaluation of oral reading fluency outcomes using the whole-class choral reading strategy and the repeated reading strategy. (c2017) 
    Itani, Dana Abdel Aziz; MA in Education; SAS; 200702429; Bahous, Rima; Nabhani, Mona; Education; Natout, Mahmoud; dana.itani@lau.edu; Lebanese American University (Lebanese American University, )
    Many students across the world and in Lebanon particularly are struggling to read fluently. The aim of this thesis is to deal with these students by using two methods of intervention, The Repeated Oral Reading (RR) strategy ...
  • Caretakers of ASD children. (c2017) 
    Shurafa, Mira Al; MA in Education; SAS; 200803619; Harati, Lina; Nabhani, Mona; Education; Bahous, Rima; mira.alshurafa@lau.edu; Lebanese American University (Lebanese American University, )
    Autism has become one of the most widespread childhood disorders. It is a development disability that affects verbal and nonverbal communication and social interaction. This study was motivated by a pursuit to investigate ...
  • Targeting arginine auxotrophy in pancreatic cancer cells using human recombinant arginase I-induced arginine deprivation. (c2017) 
    Khalil, Nathalie; MS in Molecular Biology; SAS; 201004303; Rizk, Sandra; Khalaf, Roy; Natural Sciences; Abi-Habib, Ralph; nathalie.khalil@lau.edu.lb; Lebanese American University (Lebanese American University, )
    Pancreatic cancer (PC) is a highly aggressive solid malignancy with no efficient therapy. It is one of the deadliest cancer types since its mortality rate per year is nearly equal to its incidence rate. Therefore, there’s ...

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