Browsing Department of Chemistry by Title

Now showing items 309-328 of 357

Taming the transition between ZIF-L-(Zn, Co) and ZIF-(8, 67) using a multi-inlet vortex mixer (MIVM)

Fahda, Mohammad; Ammar, Manal; Saad, Walid S.; Hmadeh, Mohamad; Al-Ghoul, Mazen (Royal Society of Chemistry, 2023)

Zeolitic imidazolate frameworks (ZIFs) have attracted extensive attention due to their high porosity, exceptional surface area and remarkable thermal and chemical stability leading to a distinguished performance in various ...
Targets, ripples and spirals in a precipitation system with anomalous dispersion

Ayass, Mahmoud M.; Lagzi, Istvàn; Al-Ghoul, Mazen (Royal Society of Chemistry, 2015)

We present a novel reaction-diffusion system that exhibits three-dimensional superdiffusive traveling waves without utilizing any external forces. These waves include single circular targets, spirals, and ripples as well ...
Temperature Mapping in Hydrogel Matrices Using Unmodified Digital Camera

Darwish, Ghinwa H.; Fakih, Hassan H.; Karam, Pierre (American Chemical Society, 2017)

We report a simple, generally applicable, and noninvasive fluorescent method for mapping thermal fluctuations in hydrogel matrices using an unmodified commercially available digital single-lens reflex camera (DSLR). The ...
Tetraaryl pyrenes: Photophysical properties, computational studies, crystal structures, and application in OLEDs

El-Assaad, Tarek H.; Auer, Manuel; Castañeda, Raúl; Hallal, Kassem M.; Jradi, Fadi M.; Mosca, Lorenzo M.; Khnayzer, Rony S.; Patra, Digambara; Timofeeva, Tatiana V.; Brédas, J. L. Luc; List-Kratochvil, Emil J.W.; Wex, Brigitte; Kaafarani, Bilal R. (Royal Society of Chemistry, 2016)

Pyrene was derivatized in positions 1, 3, 6, and 8 to yield a series of nine tetraarylpyrenes for which absorption, emission, emission lifetimes and solvatochromism in solution were determined. The fluorescence quantum ...
The association of urinary metabolites of polycyclic aromatic hydrocarbons with obstructive coronary artery disease: A red alert for action

Hajir, Salwa; Al-Aaraj, Lamis; Khoueiry-Zgheib, Nathalie; Badr, Kamal F.; Isma’eel, Hussain A.; AbchÉE, Antoine B.; Tamim, Hani Mohammed; Saliba, Najat A. (Elsevier Ltd, 2021)

In Lebanon, previous studies have indicated an onset of cardiovascular diseases 12 years earlier than in other parts of the world, suggesting the presence of additional risk factors specific to Lebanon. Measurements of ...
The Ecocanvas as a business model canvas for a circular economy

Daou, Alain; Mallat, Camille; Chammas, Ghina; Cerantola, Nicola; Kayed, Sammy; Saliba, Najat A. (Elsevier Ltd, 2020)

Today's linear economic model is increasingly problematic. Creating a closed-loop model in production and consumption is a preferred alternative to address environmental and social damages associated with the linear economy. ...
The effect of different ester chain modifications of two guaianolides for inhibition of colorectal cancer cell growth

Aaraj, Lamis Al; Hayar, Berthe; Jaber, Zaynab; Saad, Walid S.; Saliba, Najat A.; Darwiche, Nadine D.; Ghaddar, Tarek H. (MDPI, 2021)

Several sesquiterpene lactones (STLs) have been tested as lead drugs in cancer clinical trials. Salograviolide-A (Sal-A) and salograviolide-B (Sal-B) are two STLs that have been isolated from Centaurea ainetensis, an ...
The effects of modified zinc oxide nanoparticles on the mechanical/thermal properties of epoxy resin

Baghdadi, Yasmine N.; Youssef, Lucia; Bouhadir, Kamal Hani; Harb, Mohammad Said; Mustapha, Samir A.; Patra, Digambara; Tehrani-Bagha, A. R. (John Wiley and Sons Inc., 2020)

Characterized by its strength, durability, and thermal properties, epoxy resin has been widely used as an adhesive, paint, and coating in many applications in the aerospace, civil and automotive industries. Despite this, ...
The fate of selected pharmaceuticals in solar stills: Transfer, thermal degradation or photolysis?

Baalbaki, Abbas; Ayoub, Georges M.; Al-Hindi, Mahmoud; Ghauch, Antoine (Elsevier B.V., 2017)

The increase in demand for, and disposal of, pharmaceuticals, positively correlated with the growing human population, has led to the emergence of contaminants with high environmental and health impacts. Several developing ...
The mechanical and thermal properties of graphitic carbon nitride (g-C3N4)-based epoxy composites

Baghdadi, Yasmine N.; Sinno, Jihad; Bouhadir, Kamal Hani; Harb, Mohammad Said; Mustapha, Samir A.; Patra, Digambara; Tehrani-Bagha, A. R. (John Wiley and Sons Inc, 2021)

Numerous ways to reinforce epoxy resin and improve its thermomechanical properties have been attempted using organic and inorganic nanoparticles. In this paper, graphitic carbon nitride (g-C3N4) nanoparticles were synthesized ...
The photoprotective effects of 2-benzoyl-3-phenylquinoxaline 1,4-dioxide against UVB-induced damage in HaCaT cells

Mouawad, Joe E.; Saadeh, Fadi; Tabosh, Hayat Al; Haddadin, Makhluf J.; Gali-Muhtasib, Hala Uthman (Humana Press Inc., 2016)

With the increasing levels of atmospheric ozone depletion, there has been much concern about the causal effects of high levels of ultraviolet radiation reaching the Earth’s surface on skin cancer. This has led to growing ...
The quinoxaline di-N-oxide DCQ blocks breast cancer metastasis in vitro and in vivo by targeting the hypoxia inducible factor-1 pathway

Ghattass, Khaled Imad; El-Sitt, Sally Boulos; Zibara, Kazem; Rayes, Saide; Haddadin, Makhluf J.; El-Sabban, Marwan E.; Gali-Muhtasib, Hala Uthman (2014)

Background: Although tumor hypoxia poses challenges against conventional cancer treatments, it provides a therapeutic target for hypoxia-activated drugs. Here, we studied the effect of the hypoxia-activated synthetic ...
The Role of Hydrophobicity in the Cellular Uptake of Negatively Charged Macromolecules

Abou Matar, Tamara; Karam, Pierre (Wiley-VCH Verlag, 2018)

It is generally accepted that positively charged molecules are the gold standard to by-pass the negatively charged cell membrane. Here, it is shown that cellular uptake is also possible for polymers with negatively charged ...
The role of OH- in the formation of highly selective gold nanowires at extreme pH: Multi-fold enhancement in the rate of the catalytic reduction reaction by gold nanowires

El-Kurdi, Riham; Patra, Digambara (Royal Society of Chemistry, 2017)

There is a quest to understand the mechanism governing the morphology and geometry control of the particle growth of nanomaterials for their optical and catalytic applications. In the available literature, the role of OH- ...
The Role of Order in the Amplification of Light-Energy Conversion in a Dye-Sensitized Solar Cell Coupled to a Photonic Crystal

Fayad, Remi; Halaoui, Lara I. (Wiley-VCH Verlag, 2016)

We investigate the cause of amplification of light-energy conversion when coupling a nc-TiO2 film to a TiO2 inverse opal by comparing it to an inverse TiO2 glass (i-TiO2-g) fabricated with the exact monodisperse air-hole ...
The Use of Voltammetry for Sorption Studies of Arsenic (III) Ions by Magnetic Beads Functionalized with Nucleobase Hydrazide Derivatives

Sawan, Simona; Hamze, Khalil; Youssef, Ali; Bouhadir, Kamal Hani; Errachid, Abdelhamid; Maalouf, Rita M.; Jaffrézic-Renault, Nicole J. (John Wiley and Sons Inc, 2021)

In this work the interaction characteristics of nucleobases with As(III) are studied. Novel materials consisting of magnetic nanoparticles (MNPs) functionalized with adenine hydrazide (AH), guanine hydrazide (GH) and uracil ...
Therapeutic potential of flavonoids in cancer: ROS-mediated mechanisms

Slika, Hasan; Mansour, Hadi; Wehbe, Nadine; Nasser, Suzanne A.; Iratni, Rabah; Nasrallah, G. K.; Shaito, Abdullah A.; Ghaddar, Tarek H.; Kobeissy, Firas H.; Eid, Ali H. (Elsevier Masson s.r.l., 2022)

Cancer is a leading cause of morbidity and mortality around the globe. Reactive oxygen species (ROS) play contradicting roles in cancer incidence and progression. Antioxidants have attracted attention as emerging therapeutic ...
Therapeutic potential of flavonoids in cancer: ROS-mediated mechanisms

Slika, H.; Mansour, H.; Wehbe, N.; Nasser, S.A.; Iratni, R.; Nasrallah, G.; Shaito, A.; Ghaddar, T.; Kobeissy, F.; Eid, A.H (Elsevier Masson s.r.l, 2022)

Cancer is a leading cause of morbidity and mortality around the globe. Reactive oxygen species (ROS) play contradicting roles in cancer incidence and progression. Antioxidants have attracted attention as emerging therapeutic ...
Thermal and mechanical properties of epoxy resin reinforced with modified iron oxide nanoparticles

Baghdadi, Yasmine N.; Youssef, Lucia; Bouhadir, Kamal Hani; Harb, Mohammad Said; Mustapha, Samir A.; Patra, Digambara; Tehrani-Bagha, A. R. (John Wiley and Sons Inc, 2021)

Epoxy polymers, having good mechanical properties and thermal stability, are often used for engineering applications. Their properties can be further enhanced by the addition of iron oxide (Fe3O4) nanoparticles (NPs) as ...
Thermo-catalytic pyrolysis of waste polyethylene bottles in a packed bed reactor with different bed materials and catalysts

Obeid, Farah; Zeaiter, Joseph; Al-Muhtaseb, Ala'a H.; Bouhadir, Kamal Hani (Elsevier Ltd, 2014)

Plastic waste is an increasing economic and environmental problem as such there is a great need to process this waste and reduce its environmental impact. In this work, the pyrolysis of high density polyethylene (HDPE) ...

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Browsing Department of Chemistry by Title

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