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International Journal of Theoretical and Applied Research (IJTAR) is a journal in basic and applied science that is published by Faculty of Science, Al-Azhar University (Girls Branch).

The journal is committed to international scientific publishing charters as well as encouraging researchers with superior understanding to generate new ideas and problem-solving models and to publish world-class empirical research.

Journal only considers research articles and literature reviews. It does not accept hypothesis papers, commentaries, opinion pieces, case studies, case reports etc. The journal is published three times per year.

All submitted papers are subjected to a strict double-blind peer-reviewing process. The Journal is committed to publishing manuscripts via a rapid, impartial, and rigorous review process. Once accepted, manuscripts are granted free online open-access immediately upon publication, which permits its users to read, download, copy, distribute, print, search, or link to the full texts, thus facilitating access to a broad readership. Papers accepted for publishing are either subscription with a publishing fee of 700 EGP or open access with a publishing fee of 100 USD.

Current Issue: Volume 4, Issue 1, June 2025 

Impact of adding L-carnitine and semen preparation on human semen parameters after cryopreservation

Pages 553-582

Arwa Gamal Osman; Nehal Ali Abu Elnaga; Mohamed El-mahdy Abd –elmonem2; Eman Anwar Hassan


Comprehensive Phytochemical and GC-MS Analysis of Leptadenia pyrotechnica: Unveiling Antioxidant and Antibacterial Potential.

Pages 589-59

Asmaa M Radwan; Safaa mohammed ismaeil marie; Samia A. Haroun; Ghada A. El-Sherbeny; Sura Goma Mohamud


Production of functional dairy product low of phenylalanine content and supplemented with probiotics bacteria

Pages 600-608

Manar Abd El-Rahman; Nagwa Mahmoud sidkey; Aziza Al kassaby; Baher Effat; Hoda El-Sayed; Nayra Mehnna


SARS CoV-2 Detection and Survival Within the Admission Area of Confirmed Cov-2 Patients; A Multicenter study

Pages 609-613

Sahar Abdelfattah Khalil; Amira Tohamey Mersal; Nadia Fathy Ibrahim; Mohamed Mostafa Abdelghaffar


Synthesis, Physical Characterization and Photoactivity of Copper Oxide Nanorods

Pages 632-639

Radwa A. El-Salamony; Norhan S. Ibrahim; Kamilia Sedeek; Nagwa A. Badawy; Mohamed A. Abd Elraheem


Overview about viruses in the aerosol of the wastewater treatment plants

Pages 652-667

Waled Morsy El-Senousy; Esraa H. K. AbdAllah; Seham F. Hasan; Nagwa M. Sidkey


A review on thermo-alkalophilic bacterial lipase production and its applications

Pages 682-688

Nesreen H Ibrahim; Alaa Atef; Mohamed A Abd El-Rahman; Nagwa M Sidkey


Antibacterial Effects of Some Medicinal Plants on MDR Bacterial Pathogen Isolates from Different Sources

Pages 699-710

somaya shawki Ahmed; Nagwa Mahmoud sidkey; Amal Ahmed Ibrahim Mekawey; Asmaa Sami Mansour


Larvicidal Activities of Entomopathogenic Nematode Steinernema carpocapsae and Zinc Oxide Nanoparticles Against the Black Cutworm, Agrotis ipsilon

Pages 711-719

Samia E El-Didamony; Nourhan M. Elshandidy; Heba Tallah E. Negm; Amany S. Mansour; Rawan U. El- said; Fayza M. E. Sabbah; Alaa A. Adly; Walaa I. M. Abdel Haliem; Sawsan A. Ghaly; Alaa N. Sakr; Tasneem M. Ahmed M. Ahmed; Marwa A. H. Tail; Fatma A. Mansour; Esraa G. Ismail; Karima A. Abdul Fattah; Reham S. S. Ali; Asmaa A. B. Ali A. B. Ali; Eman A. G. Dawood; Esraa H. Menshawy; Wedad A. Atwa; Mostafa A. Taha; Afaf Ab ELwahab Abass; Asmaa Zu- Elhemma; Hanaa I. Mahmoud; Abdelbaset B. Zayed; Manal Elsayed Elshaier; Walaa A. Moselhy; Hala M. Kadada; Fatma Z. Hamed; Enayat M. Elqady; Hend H. Salem; Eman El-Said Gomaa; Shaimaa H. Mohammed