User profiles for Ahmad Najjar

Ahmad Najjar

Philadelphia University
Verified email at philadelphia.edu.jo
Cited by 51

[HTML][HTML] Antibiofouling performance by polyethersulfone membranes cast with oxidized multiwalled carbon nanotubes and arabic gum

A Najjar, S Sabri, R Al-Gaashani, MA Atieh… - Membranes, 2019 - mdpi.com
Despite extensive research efforts focusing on tackling membrane biofouling, one of the
biggest problems associated with membrane technology, there has been little headway in this …

[HTML][HTML] Antibacterial properties of polysulfone membranes blended with Arabic gum

S Sabri, A Najjar, Y Manawi, NO Eltai, A Al-Thani… - Membranes, 2019 - mdpi.com
Polysulfone (PS) membranes blended with different loadings of arabic gum (AG) were
synthesized using phase inversion method and the antibacterial properties of the synthesized …

[HTML][HTML] Enhanced fouling resistance and antibacterial properties of novel graphene oxide-Arabic gum polyethersulfone membranes

A Najjar, S Sabri, R Al-Gaashani, V Kochkodan… - Applied Sciences, 2019 - mdpi.com
Membrane biofouling has proved to be a major obstacle when it comes to membrane efficiency
in membrane-based water treatment. Solutions to this problem remain elusive. This study …

[HTML][HTML] A rapid, isocratic HPLC method for determination of insulin and its degradation product

A Najjar, M Alawi, N AbuHeshmeh… - Advances in …, 2014 - hindawi.com
This paper aimed to develop a simple, sensitive, and rapid chromatographic procedure for
the simultaneous analysis of human insulin and its main decomposition product using …

Micellar and polymer catalysis in the kinetics of oxidation of L-lysine by permanganate ion in perchloric acid medium

M Hassan, M Al-Dhoun, Y Batineh, AA Najjar… - South African Journal of …, 2021 - ajol.info
Kinetics of oxidation of L-lysine by permanganate ion in a perchloric acid medium was
investigated to explore the order of the reaction with respect to oxidant and substrate and to study …

Posterior minimally invasive transpedicular approach for giant calcified thoracic disc herniation

D Shedid, Z Wang, A Najjar, SJ Yuh… - Global Spine …, 2021 - journals.sagepub.com
Study Design: Retrospective case series. Objective: Posterior surgery for thoracic disc
herniation was associated with increased morbidity and mortality and new minimally invasive …

Multi-residue analysis of organochlorine pesticides and carcinogenic polycyclic aromatic hydrocarbons in Jordanian olive oil using gas chromatography-mass …

IN Tarawneh, AA Najjar, FF Salameh… - Journal of Liquid …, 2020 - Taylor & Francis
A new simple extraction method has been developed for determination 20 banned
organochlorine (OC) pesticide residues and 16 Environmental Protection Agency (EPA) priority …

Determination of Polycyclic Aromatic Hydrocarbons and α, β-Unsaturated Aldehydes in Frying Oils in Jordan

IN Tarawneh, AA Najjar, RS Bani Issa… - Polycyclic Aromatic …, 2022 - Taylor & Francis
In this study, an efficient gas chromatography with mass-spectrometric detector (GC/MS)
method has been developed for extraction and quantitation of 16 carcinogenic polycyclic …

Analytical method development for the screening and determination of dioxins in clay matrices

MA Alawi, AA Najjar, HN Khoury - CLEAN–Soil, Air, Water, 2014 - Wiley Online Library
Dioxin‐contaminated kaolin receives great attention by workers in the fields of environmental
science, soil geology, and mining, due to its impact on the areas of health and business. …

COVID-19 vaccine–Long term immune decline and breakthrough infections

…, R Najjar-Debbiny, A Hanna, A Jabbour, YA Ahmad… - Vaccine, 2021 - Elsevier
Background Since the introduction of BNT162b2 mRNA COVID-19 vaccine by Pfizer in late
2020, efficacy and immunogenicity waning of COVID-19 vaccines was reported, and …