II-i- Department of Life Sciences

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Welcome to the Department of Life Sciences The Department of Life Sciences, part of the Faculty of Education at the University of Fallujah, offers a comprehensive program in biological sciences. The department focuses on teaching and research in various fields such as biology, ecology, and environmental science. Our aim is to equip students with the scientific knowledge and practical skills necessary to excel in both academic and professional fields related to life sciences. The department is committed to providing a high-quality education, fostering scientific inquiry, and promoting a deeper understanding of the living world. Students are encouraged to engage in hands-on learning through laboratory work, field studies, and research projects. Explore more about our programs and get involved in advancing scientific knowledge and environmental sustainability.

News

News Latest News - Department of Life Sciences New Research Lab Opened December 2024 The Department of Life Sciences is excited to announce the opening of a new research laboratory designed to enhance student and faculty research in biology and environmental sciences. New Curriculum Update November 2024 The Department of Life Sciences has introduced new courses in molecular biology and ecology as part of the updated curriculum for the 2024 academic year, aiming to expand learning opportunities for students. Annual Science Symposium October 2024 The Department of Life Sciences hosted its annual science symposium, where faculty and students presented their latest research in the fields of genetics, biochemistry, and environmental studies. For more updates, visit University of Fallujah Website Upcoming events: Department Events

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Author: search.filters.author.Samar Naser MohammedStart date: 2020

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Now showing 1 - 3 of 3
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    MWCNT-based material as a gas sensor for H 2 and characterisation
    (Inorganic Chemistry Communications, 2023) Yasser Naji Ahmed; Mohammed faiad naief; Samar Naser Mohammed; Ahmed Mishaal Mohammed
    In this study, waste oil was used to produce multi-walled carbon nanotubes (MWCNTs). TEM, FE-SEM and AFM techniques were used to characterise MWCNTs. In addition, the sizes of the synthesised MWCNTs ranged from 28.3 to 49.51 nm. The FTIR technique was used to prove the production of MWCNTCOO. The produced MWCNTCOO were evaluated as gas sensors for H 2 The higher H 2 S and NO 2 ◦ S sensitivity response was recorded at 70 gases at various temperatures and time intervals. C, with a response of 10.6, meanwhile, the greater NO sensitivity response was observed at 190 ◦ C, with a response of 29.9. At 25 ◦ 2 C, the response and recovery times for 100 ppm H 2 ◦ S gas were 18.9 and 96.3 s, respectively, whereas, at 100 C, they were 28.8 and 85.5 s, respectively, thereby demonstrating that the sensor has unique response recovery features
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    Novel preparation method of fullerene and its ability to detect H2S and NO2 gases
    (Results in Chemistry, 2023) Mohammed Faiad Naief; Samar Naser Mohammed; Yasser Naji Ahmed; Ahmed Mishaal Mohammed; Sura Naser Mohammed
    In this study, a new system for fullerene preparation was designed based on the incomplete combustion of liquid asphalt. Transmission electron microscopy, field emission scanning electron microscopy and energy-dispersive X- ray (EDX) techniques were used to characterise fullerene. The sizes of the synthesised fullerene ranged from 48.20 nm to 73 nm. The EDX technique was used to determine the amounts of elements in a component, thereby revealing the formation of fullerene. The produced fullerene was evaluated as a gas sensor for H2S and NO2 gases at various temperatures and time intervals. The sensitivity of the gas sensor decreased with the increased operating temperature reaching 150 ◦C. Then, the sensitivity increased as the temperature increased. The maximum gas sensitivities for NO2 and H2S were 72.86% at 25 ◦C and 75.89% at 200 ◦C, respectively.
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    Synthesis and characterisation of MWCNTCOOH and investigation of its potential as gas sensor
    (journal homepage, 2023) Mohammed Faiad Naief; Samar Naser Mohammed; Yasser Naji Ahmed; Ahmed Mishaal Mohammed
    Monitoring and control of hazardous gases have been a top concern because they lead to serious public health issues, such cardiovascular diseases, respiratory illnesses, central nervous system abnormalities and other ill nesses. These gases are also linked to global warming, which affects the surrounding environment. Therefore, harmful emissions should be limited and neutralised. Traditional gas sensors have slow speed, expensive oper ation, labour and capital intensive and invasive. Scholars need to develop an inexpensive, rapid, efficient, highly sensitive, portable sensors with a low power consumption and a high level of reliability. In this study, multi- walled carbon nanotubes (MWCNTs) were synthesised using plant byproducts. TEM, FE-SEM and AFM were employed to identify MWCNTs. Gas test showed that the sensor had high sensitivity levels of 5.6 and 8.8 and response times as low as 24.3 and 21.6 s for H2 S and NO 2 , respectively.
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