جامعة بلاد الرافدين - Bilad Alrafidain University - Assist.Lec. Ali Hassan Mahmoud

م.م علي حسن محمود علي

Assist.Lec. Ali Hassan Mahmoud

تدريسي : طب الاسنان

Teaching : Collage of Dentistry

ماجستير علوم حياة/احياء مجهرية

Msc in Microbiology

bauc14.edu.iq

Ly862144@gmail.com

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Research

Compositions

Syllabuses

Lectures

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Articles in the magazine

Syllabuses

Syllabuses - 2

Dep.	Step.	Sem.	code	No.	Des.	Syllabuses
Collage of Dentistry	three	full		6		الاحياء المجهرية Microbiology
Collage of Dentistry	one	full		6		الاحياء Biology

Lectures

Lectures - 7

year	syllabuses	Dep.	Step	Lectures
2024-2025	الاحياء Biology	Collage of Dentistry	step 1	special connective tissue
2024-2025	الاحياء Biology	Collage of Dentistry	step 1	parasite
2024-2025	الاحياء Biology	Collage of Dentistry	step 1	Muscle Tissues Lab Pdf (3)
2024-2025	الاحياء Biology	Collage of Dentistry	step 1	glandular epithelium
2024-2025	الاحياء Biology	Collage of Dentistry	step 1	epithelial tissue
2024-2025	الاحياء Biology	Collage of Dentistry	step 1	cell types
2024-2025	الاحياء Biology	Collage of Dentistry	step 1	Blood and tissue flagellates (2)

Research

	2021	Plant Archives
The current study involved collecting 225 samples of different age groups and from different clinical sources (burns and wounds). Selective and differential media, Microscopic Examination, Biochemical test, IMVIC tests, and Vitek 2 system were used to identify the bacterial species. The results showed that the bacterial isolates were distributed on Staphylococcus aureus, Pseudomonas aeruginosa, Staphylococcus epidermidis, Klebsiella pneumoniae, Escherichia coli and Proteus mirabilis. All isolates were multidrug-resistant to 12 antibiotics from different classes and according to the susceptibility test, isolate distinction in 2 groups (75 %) of MDR isolates were resistant to (5-9) antibiotics, while (25 %) were susceptible. Zinc Oxide nanoparticles synthesized was done by a green method with Zinc acetate dehydrate as a precursor and aqueous extract of Camellia sinensisas a reducing agent, color-changing to pale-white was an indication of the formation of ZnONPs. The average size and shape of the nanoparticles were detected by using Atomic Force Microscopy (AFM) which was 40 nm with a spherical shape. Scanning Electron Microscopy (SEM) showed the ZnO NPs have spherical, radial, and cylindrical structures. The wavelength range was measured by Ultraviolet-visible spectroscopy (UV-Vis) for monitoring the formation of the nanoparticles, which showed a sharp peak at 325 nm. The average crystallite size of ZnONPs was estimated using Debye Scherrer’s formula were 20-40nm by using X-ray Diffraction (XRD). Fourier-transform infrared spectroscopy (FT-IR) spectra have been used for ZnONPs to detect the functional groups found in the synthesis process via green tea extract. Keyword: ZnO NPs. Biosynthesis, Camellia sinensis, Green tea, Antibacterial activity Running title: Biosynthesis and characterization of ZnO Nanoparticles

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