MSA Repository "MSAR"
MSAR University's Digital Repository is a documentation and digitization of all university outcomes that are of effective value in the scientific and academic community and reflects the university's image, work, and effective contribution to society Through MSAR Digital Repository, the university managed to collect, store, archive and publish digital content - including documents, audio files, images and data sets - all in a safe place. MSAR is one of the strongest University Digital Repositories in Egypt and documented in the DSPACE community with its latest versions.
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Recent Submissions
Biorefnery practice for valorizing Mediterranean bloomed Pterocladia capillacea into valued and sustainable bioproducts with numerous green solicitations
(Springer Nature, 2025-03-04) N. Sh. El‑Gendy; H. N. Nassar; A. R. Ismail; H. R. Ali; B. A. Ali; K. M. Abdelsalam; M. Mubarak
As a solution for ecosystem bioremediation from the gigantic red seaweed proliferation across the Mediterranean shorelines,
this work investigates the efective utilization of Pterocladia capillacea to produce diferent esteemed and viable bioproducts.
The nutritional composition of approximately 6.88±0.31%, 20.15±0.2%, 42.16±0.3%, and 2.51±0.05% (w:w) protein,
fber, carbohydrate, and lipid, respectively, promotes its application in the human food and animal fodder industries. Its
N+ P2O5+ K2O, undesirable heavy metals, organic carbon, and organic matter contents of 5.48±0.07%, 2.82±0.15 mg/
kg, 16.11±0.15%, and 27.71±0.26% are all within the ranges allowed by the Egyptian standard for organic fertilizer. Its
calorifc value of 16.16±0.5 MJ/kg and relatively low ash and heavy metals contents are in accordance with the international
standards for primary solid biofuel. Its relatively high holocellulose content of 44±0.5% (w/w) recommends its applicability
in the liquid biofuels sector. Further, via a pioneering practice, a sequential, eco-friendly, and fully integrated bioprocess Pt.
capillacea biomass is valorized into natural pigments of approximately 5.05±0.05 mg/g total chlorophyll, 2.12±0.05 mg/g
carotenoids, phycobiliproteins of approximately 1.33±0.05 mg/g phycocyanin, 3.07±0.05 mg/g allophycocyanin, and
0.97±0.05 mg/g phycoerythrin, hydrocolloids of approximately 28.21±2.5% carrageenan and 20.46±1.5% agar, and fnally
cellulose of approximately 20.15±1.5%. Additionally, the extracted carrageenan proved an efcient antimicrobial action
against pathogenic microorganisms that supports its use for water densifcation, food packing, and wound dressing.
Resilient STR loci under gamma radiation: A preliminary study on DNA stability in buccal swabs
(Elsevier Ltd, 2025-03-06) Amani Kraishan; Ahmad M. Refaat; Jenan A. Almhaini; Alaa Saeed Bazuhair; Saeed M. Al-Qahtani; Marwan A. Althomali; Hatem Al-Ameryeen; Ali H. Alomari; Abdul-Wali Ajlouni
This study explores how gamma radiation affects DNA concentration and the stability of autosomal short tandem repeat (STR) markers in buccal swab samples. A total of 160 swabs from 20 volunteers were exposed to therapeutic radiation doses ranging from 1 to 80 Gy. The results revealed a clear dose-dependent decrease in DNA concentration, indicating significant DNA damage as radiation increased. Despite this, the autosomal STR markers remained stable across all doses, demonstrating their robustness against radiation-induced damage. These findings are crucial for clinical and forensic applications, confirming that STR profiling remains reliable for cancer patients undergoing radiation therapy and in forensic cases involving irradiated DNA. The study emphasizes the value of STR markers in genetic analysis under challenging conditions and highlights the need for further research on their long-term stability in diverse biological contexts.
In vitro evaluation of human enamel remineralization after treatment with Ginger, Ashwaganda and Maca herbal dentifrices versus commercially available fluoride containing dentifrice
(Springer International Publishing, 2025-03-03) Ghada Ahmed Elzayat; Fagr Hassan Elmergawy; Aya Abd ElFattah Mohammed Nemt Allah
Background: Compare the remineralization efficiency of Ginger, Ashwaghanda and Maca dentifrices versus commercially fluoride containing dentifrice. Methods: Ginger, Ashwaghanda and Maca extracts were prepared by solvent extraction methodology and were characterized using transmission electron microscope, dynamic light scattering, and inductively coupled plasma optical emission spectrometer. The pH of the dentifrices was evaluated by pH meter. Eighty teeth were collected and divided into five groups according to the treatment protocol. Enamel morphology was carried out by scanning electron microscope with energy dispersive X-Ray spectroscopy for the analysis of calcium, phosphorus, Ca/P ratio and carbon. Surface microhardness was evaluated by Vickers micro-hardness tester. Data were analyzed using One-way ANOVA followed by Tukey’s post hoc test (p ≤ 0.05). Results: Characterization results showed the highest calcium, phosphorus and fluoride ion release were associated to Maca, Ashwaganda and Ginger respectively. The pH results revealed that Ginger dentifrice exhibited the most alkaline pH, whereas Ashwaganda dentifrice exhibited the most acidic pH. Morphological analysis revealed that Ashwaganda showed lower remineralization ability compared to the other treated groups. Maca showed significant higher Ca/P ratio compared to other groups (p < 0.001) and Ginger showed significant higher surface microhardness recovery compared to Ashwaganda (p < 0.001). Conclusion: Ginger and Maca are promising remineralizing agents.
High-intensity laser therapy can improve pain, health status and quality of life in women with fibromyalgia: a single blindedrandomized controlled trial
(Springer Verlag, 2025-03-04) Kerolous Ishak Shehata Kelini; Marwa Shafiek Mustafa Saleh; Menna Allah Mohammed Abbas; Mohamed Bayoumi Ibrahim Bayoumi; Sara M. Ahmed
This study was conducted to explore the influence of High-Intensity Laser Therapy (HILT) on health status, pain intensity,
Pain Pressure Threshold (PPT), and Quality of Life (QoL) in Fibromyalgia (FM) women. Fifty-two women with FM were
randomly divided into either the HILT group (n=26) or the control group (n=26). Those in the HILT group underwent
HILT alongside an exercise program consisted of low-impact aerobics training and stretching exercises, while the control
group received the exercise program only. Treatments were administered three times per week for six weeks. Fibromyalgia symptoms and health status (Revised Fibromyalgia Impact Questionnaire (RFIQ), Pain intensity (visual analog scale),
PPT (pressure algometer), and QoL (Short Form 36 Questionnaire) were measured pre and post six-week intervention
timeframe. Regarding baseline data, insignificant differences were identified between groups (p>0.05). Comparing groups
after 6-week intervention reveals statistically significant differences in favor of the HILT group across all measured aspects
(p<0.001). HILT may be an effective treatment for women with FM, potentially enhancing pain management, reducing
the impact of FM, and improving their QoL.
The Moderating Role of Audit Committee Quality on the Relationship between Firm Size and Risk Disclosure
(MSA University, 2024) Salaheldin Hani Mortada; Sherouk Osama Kamal
The audit committee is vital in promoting transparency and maintaining ethical standards in financial reporting. As businesses become more intricate, effective risk management and disclosure have become even more crucial. A competent audit committee plays a significant role in overseeing risk disclosure and reducing potential hazards for a company. The quality of audit committees also impacts the relationship between risk disclosure and the company's size. Prompt and precise risk disclosure is essential in communicating potential risks to stakeholders and empowering them to make informed decisions about the company's financial state (Al-Baidhani, 2014).