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Ibrahim, Y. F., and M. F. Yousif, "U-Modules with transitive perspectivity", Communications in Algebra, vol. 49, issue 10, pp. 4501–4512, 2021.
Ibrahim, Y., and M. Yousif, "U-Rings generated by its Idempotents", In Noncommutative Rings and Their Applications, Contemporary Mathematics, Amer. Math. Soc, vol. 727, pp. 157-165, 2019.
Abdelfatah, R., A. Moawad, N. Alshaer, and T. Ismail, "UAV tracking system using integrated sensor fusion with RTK-GPS", 2021 International Mobile, Intelligent, and Ubiquitous Computing Conference (MIUCC): IEEE, pp. 352–356, 2021. Abstract
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Abou-Elela, R. G., and M. Z. Nawal Zohdy, "Uber die Wirkung der photoperiode auf den Schlupf-rythmus der Falter von Spodoptera littoralis (boisd.) (Lep., Noctuidae) ", Anz. Schadlingskde. pflanzenschutz, Umweltschutz, vol. 48, pp. 150-154, 1975.
R, A., E. K. A, E. E. R, and M. M, "UBM in congenital glaucoma: what information can it provide? ", BULL. OPHTHALMOL. SOC. EGYPT, vol. 99(6), pp. 1659 -1665, 2006.
Refai, M., and W. Bisping, "Ueber das Vorkommen von Hautpilzen bei Affen.", Kleintier Prax. , vol. 9, pp. 147-150, 1964. dermatophytes_in_monkeys.pdf
Refai, M., "Ueber das Vorkommen von Schimmelpilzen in der Gefluegelindustrie, Bestimmung der pathogenitaet von Schimmelpilzen ", in Huenerembryonentest und Disinfektionsversuche. In Grimmer, H. and Rieth, H., Endomykosen und Dermatmykosen. , Berlin, Grosse Verlag,, 1971. incidence_of_moulds_in_poultry_industry_and_determination_of_pathogenicity_of_moulds_in_chicken_embryo.pdf
Hassan, B., S. Abdelrahman, R. Bahgat, and I. Farag, "UESTS: An Unsupervised Ensemble Semantic Textual Similarity Method", IEEE Access, vol. 7, pp. 85462-85482, 2019.
Mohamed, H. M. H., and Y. Afifi, "The Ugly Truth of High Performance Work Systems (HPWPS) In Premier League -Conceptual Framework", British Academy of Management, United Kingdom, 4 September, 2018.
Afifi, Y. A. M., and H. M. Hussein, "The Ugly Truth of High Performance Work Systems (HPWPS) In Premier League -Conceptual Framework", British Academy of Management, Bristol, UK., Bristol, UK., 2018.
Afifi, Y. A. M., and H. M. Hussein, "The Ugly Truth of High Performance Work Systems (HPWPS) In Premier League -Conceptual Framework", British Academy of Management, Bristol, UK., Bristol, UK., 2018.
Afifi, Y. A. M., and H. M. Hussein, "The Ugly Truth of High Performance Work Systems (HPWPS) In Premier League -Conceptual Framework", British Academy of Management, Bristol, UK., Bristol, UK., 2018.
Zhang, L., F. R. Saber, G. Rocchetti, G. Zengin, M. M. Hashem, and L. Lucini, "UHPLC-QTOF-MS based metabolomics and biological activities of different parts of Eriobotrya japonica.", Food research international (Ottawa, Ont.), vol. 143, pp. 110242, 2021. Abstract

Eriobotrya japonica, commonly known as loquat, has been used traditionally for the treatment of different diseases. Herein, untargeted profiling based on ultra-high-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UHPLC-QTOF-MS) was used to depict the phytochemical profile of loquat roots, leaves, stems, seeds, and fruits. This allowed the tentative annotation of 349 compounds, representing different phytochemical classes that included flavonoids, phenolic acids, lignans, stilbenes, and terpenoids. Among others, low molecular weight phenolics (tyrosol derivatives) and terpenoids were the most abundant phytochemicals. After that, in vitro antioxidant and enzyme inhibition assays were applied to investigate the biological activity of the different organs of Eriobotrya japonica. Roots of E. japonica exhibited the highest antioxidant capacity, showing 181.88, 275.48, 325.18, 169.74 mg Trolox equivalent (TE)/g in DPPH, ABTS, CUPRAC, and FRAP assays, respectively. Furthermore, the root extract of E. japonica strongly inhibited butyryl cholinesterase (3.64 mg galantamine equivalent (GALAE)/g), whereas leaves, stems, seeds, and fruits showed comparable inhibition of both acetyl and butyryl cholinesterases. All the investigated organs of E. japonica exhibited in vitro tyrosinase inhibition (57.27-71.61 mg Kojic Acid Equivalent (KAE)/g). Our findings suggest a potential food and pharmaceutical exploitation of different organs of E. japonica (mainly roots) in terms of enrichment with health-promoting phenolics and triterpenes.

Zhang, L., G. Rocchetti, G. Zengin, G. Ak, F. R. Saber, D. Montesano, and L. Lucini, "The UHPLC-QTOF-MS Phenolic Profiling and Activity of Mill. Reveals a Promising Nutraceutical Potential.", Foods (Basel, Switzerland), vol. 10, issue 6, 2021. Abstract

Mill., normally known as the quince fruit, has been widely used in agro-food industries mainly to produce jams and jellies. However, other parts of the plants are still underutilized and not completely assessed for their nutraceutical profile. Therefore, in this work, the polyphenolic profile of was investigated using an untargeted metabolomics approach based on high-resolution mass spectrometry. Several compounds were identified in the different parts of the plants, including flavonoids (i.e., anthocyanins, flavones, flavan-3-ols, and flavonols), phenolic acids (both hydroxycinnamics and hydroxybenzoics), low-molecular-weight phenolics (tyrosol equivalents), lignans, and stilbenes. Overall, leaves showed the highest in vitro antioxidant potential, as revealed by 2,2-difenil-1-picrylhydrazyl (DPPH), 2,2'-Azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS), ferric reducing antioxidant power (FRAP), and cupric ion reducing antioxidant capacity (CUPRAC) assays, being 189.5, 285.6, 158.9, and 348.8 mg Trolox Equivalent/g, respectively. The enzymes acetyl- and butyryl-cholinesterases were both inhibited by the different plant parts of , with stems showing the higher inhibitory potential. Interestingly, the fruit extracts were the only parts inhibiting the α-glucosidase, with a value of 1.36 mmol acarbose equivalents (ACAE)/g. On the other hand, strong tyrosinase inhibition was found for stems and leaves, being 72.11 and 68.32 mg Kojic acid Equivalent/g, respectively. Finally, a high number of significant (0.05 < < 0.01) correlations were outlined between phenolics (mainly anthocyanins, flava-3-ols, and tyrosol equivalents) and the different biological assays. Taken together, our findings suggest a potential exploitation of leaves and stems for the food, pharmaceutical, and cosmetic industries.

Shaw, R., and C. O. V. I. D. S. Collaborative, "UK Head and neck cancer surgical capacity during the second wave of the COVID—19 pandemic: Have we learned the lessons? COVIDSurg collaborative", Clinical Otolaryngology, vol. 46, no. 4, pp. 729-735, 2021. AbstractWebsite

Abstract Objectives The aim of this study was to evaluate the differences in surgical capacity for head and neck cancer in the UK between the first wave (March-June 2020) and the current wave (Jan-Feb 2021) of the COVID-19 pandemic. Design REDcap online-based survey of hospital capacity. Setting UK secondary and tertiary hospitals providing head and neck cancer surgery. Participants One representative per hospital was asked to report the capacity for head and neck cancer surgery in that institution. Main outcome measures The principal measures of interests were new patient referrals, capacity in outpatients, theatres and critical care; therapeutic compromises constituting delay to surgery, de-escalated surgery and therapeutic migration to non-surgical primary modality. Results Data were returned from approximately 95% of UK hospitals with a head and neck cancer surgery specialist service. 50% of UK head and neck cancer patients requiring surgery have significantly compromised treatments during the second wave: 28% delayed, 10% have received radiotherapy-based treatment instead of surgery, and 12% have received de-escalated surgery. Surgical capacity has been more severely constrained in the second wave (58% of pre-pandemic level) compared with the first wave (62%) despite the time to prepare. Conclusions Some hospitals are overwhelmed by COVID-19 and unable to offer essential cancer surgery, but all have neighbouring hospitals in their region retaining good (or even normal) capacity. It is noteworthy that very few patients have been appropriately redirected away from the hospitals most constrained by their burden of COVID-19. The paucity of an effective central or regional strategic response to this evident mismatch between demand and surgical capacity is to the detriment of our head and neck cancer patients.

El Toukhy, A., T. F. Sakran, H. M. Fayed, and M. a Abdel-gawad, "Ulatastructure of the merozoites and gametes of Isospora stenodactyi ( El - Toukhy, 1994): an intranuclear parasite. ", J. Egypt. Ger. Soc. Zool., vol. 15 (D), pp. 299-310, 1994.
El Toukhy, A., T. F. Sakran, H. M. Fayed, and M. a Abdel-gawad, "Ulatastructure of the merozoites and gametes of Isospora stenodactyi ( El - Toukhy, 1994): an intranuclear parasite.", J. Egypt. Ger. Soc. Zool., vol. 15 (D), pp. 299-310, 1994.
NH, M., E. - B. RA, R. L, and S. M, "ULBP3: a marker for alopecia areata incognita.", Arch Dermatol Res, vol. 6, issue 308, pp. 415-421, 2016. arch_derma_research.docx