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Rizk, M. M., "Dzyadyk’s Technique For ODE’s Using Hermitian Interpolating Polynomials.", Ukrainian Mathematical Journal , vol. 53, issue 4, pp. 569 – 583, 2001.
Vartoukian, S. R., W. M. Tilakaratne, N. Seoudi, M. Bombardieri, L. Bergmeier, A. R. Tappuni, and F. Fortune, "Dysregulation of the suppressor of cytokine signalling 3-signal transducer and activator of transcription-3 pathway in the aetiopathogenesis of Sjögren's syndrome.", Clinical and experimental immunology, vol. 177, issue 3, pp. 618-29, 2014 Sep. Abstract

The suppressor of cytokine signalling 3 (SOCS3) negatively regulates the Janus kinase (JAK)/signal transducer and activator of transcription-3 (STAT-3)/interleukin (IL)-17 pathway. The proinflammatory cytokine IL-17 is over-expressed in Sjögren's syndrome (SS) and is a key factor in its pathogenesis. We hypothesized that IL-17 over-expression in SS results from ineffective regulation by SOCS3. The expression of SOCS3 was analysed in peripheral blood mononuclear cells (PBMC) from SS cases, sicca controls (SC) and healthy controls (HC) and tissue samples from SS, SC and healthy salivary glands (HSG). PBMC and salivary gland tissue from SS and controls were dual-immunostained for SOCS3 and IL-17. IL-6-stimulated PBMC from SS and controls were evaluated for time-dependent STAT-3 activation and SOCS3 induction, and for IL-17 expression. Immunoblotting revealed greater levels of SOCS3 in PBMC from SS than SC (P = 0·017) or HC (P < 0·001). Similarly, the proportion of salivary-gland tissue cells staining for SOCS3 was significantly higher in SS than SC (P = 0·029) or HSG (P = 0·021). The cells in PBMC/salivary gland samples from controls predominantly expressed either SOCS3 or IL-17. However, there was a high frequency of SOCS3/IL-17 co-expression within cells of SS samples. IL-6-stimulation of PBMC from SS cases revealed prolonged activation of STAT-3 with reduced negative regulation by SOCS3, and enhanced expression of IL-17. This study showed that SOCS3 expression is up-regulated in SS. However, the absence in SS of the normal inverse relationship between SOCS3 and pSTAT-3/IL-17 indicates a functional disturbance in this signalling cascade. Consequently, a reduction in function, rather than a reduction in expression of SOCS3 accounts for the unregulated expression of IL-17 in SS, and may play a crucial role in aetiopathogenesis.

Labib, D. A., D. Koptan, S. Ghoniem, S. H. Salah, R. [E. Shazly], and R. [E. M. Refai], "Dysregulation of microRNA146a-5p expression in systemic lupus erythematosus females: Diagnostic potential and association with ocular manifestations", The Egyptian Rheumatologist, vol. 42, no. 2, pp. 117 - 121, 2020. AbstractWebsite

Background Micro-ribonucleic acids (miRNA) are key regulators for the expression of related target genes and their aberrant expression has a substantial role across many pathways within autoimmunity. Aim of the work To evaluate the expression of miRNA-146a-5p in systemic lupus erythematosus (SLE) patients and to assess its relation to the disease activity and various disease parameters with specific focus on the ocular manifestations. Patients and methods 42 female SLE patients and 39 matched healthy individuals were enrolled in this study. The serum level of miRNA146a-5p was evaluated by a quantitative real-time polymerase chain reaction (PCR) (Taqman technology). Results The mean age of the patients was 29 ± 9.1 years. The serum level of miRNA146a-5p was significantly higher in SLE cases (3.21 ± 4.47 fold change) compared to the controls (1.54 ± 1.66 fold change) (p = 0.001). A significant negative association was found between the serum level of miRNA146a-5p and C4 level (p = 0.018). Expression levels of miRNA146a-5p were significantly decreased in patients with photosensitivity (p = 0.006). Regarding ocular manifestations, a lower level of miRNA146a-5p was detected in patients suffering from dry eyes, cataract, keratitis and drusen compared to patients without and a higher level was found in those suffering from retinopathy. Serum miRNA146a-5p at a cut off value of 1.36 could discriminate patients from controls (95%CI: 0.61–0.84; p = 0.001) at a sensitivity of 69% and specificity of 64.1%. Conclusion These findings suggest that miR-146a-5p could be a potential diagnostic biomarker in SLE and may implicate a functional role in the pathophysiology of the ocular manifestations in the disease.

Abdelhameed, A. S., Dysregulation of Micr RNA in adult acute myeloid leukemia, , Cairo, National Cancer Institute- Cairo University, 2016.
Farouk, H. M., S. H. Hamza, S. E. A. Bakry, S. S. Youssef, I. M. Aly, A. A. Moustafa, N. Y. Assaf, and A. H. M. El-Dakrony, "Dysregulation of angiogenic homeostasis in systemic sclerosis", international journal of rheumatic diseases, vol. 16, issue 4, pp. 448 - 454, 2013.
, "Dysphonia In Teachers; Is It only a Matter of Voice Misuse? ", Published in Egyptian Journal Of Otolaryngology(EJO)8, issue July 2014 Vol 30 NO 3 , pp. p.272-27, 2014. voice_in_teachers_ejo.doc
A., A. H., E. dessouky H., M. E, and E. M, "Dysphonia In Teachers; Is It only a Matter of Voice Misuse?", Published in Egyptian Journal Of Otolaryngology(EJO) July 2014 , vol. Vol 30, issue NO 3, pp. p.272-278, 2014. voice_in_teachers_ejo.doc
Eltelety, A. M., and A. A. Nassar, "Dysphonia as the main presenting symptom of COVID-19: a case report", Kasr Al Ainy Medical Journal, vol. 26, issue 2, pp. 95-97, 2020.
Ebrahim, A., Warda Youssef Mohamed, F. A. Allah, and Y. A. Alsalam, "Dysphagia Related Health Consequences among Patients with Acute Stroke In Cairo, Egypt", The Medical Journal of Cairo University, vol. volume 86, No. 7, pp. 4159- 4167, Submitted.
F, G. I., H. SF, R. LA, and A. A. A, "Dyslipidemia And Disruption OF L-Carnitine In Aluminum Exposed Workers", The Egyptian Journal of occupational Medicine, vol. 37, issue 1, pp. 33-46, 2013. dyslipidemia_and_disruption_of_l-carnitine.pdf
Gaballah, I. F., S. F. Helal, L. A. Rashed, and A. A. Abdelsamea, "Dyslipidemia And Disruption Of L-Carnitine In Aluminum Exposed Workers", Egyptian Journal of Occupational Medicine, vol. 37, issue 1, pp. 33-46, 2013.
Fayek, M. B., "DYN_CBC: Dynamic adjustment of Context Based Clearing for Advanced GA Niching", CIIT International Journal of Artificial Intelligent Systems and Machine Learning, vol. Nov 2011, issue ISSN 0974 – 9667, 2011.
Al-Sayed, A. A., A. M. Kheir, H. I. El-Naggar, and H. H. Kesba, "Dynamics of vine field nematode populations and micro-plots trials as influenced by soil type, temperature, vine cultivars and nematode species.", Jouranl of Agricultural Sciences, Mansoura University, Egypt, vol. 26, issue 2, pp. 1079 – 1088, 2001.
Kumar, D., C. Park, N. Tamanna, G. C. Paul, and M. S. Osman, "Dynamics of two-mode Sawada-Kotera equation: mathematical and graphical analysis of its dual-wave solutions", Results in Physics, vol. 19, pp. 103581, 2020.
Imam, H., G. Abdellatif, V. Palleschi, M. A. Harith, E. - E. Yosr, and others, "Dynamics of Spatially and Temporally Resolved Laser Induced Al-plasma", MODERN TRENDS IN PHYSICS RESEARCH: Second International Conference on Modern Trends in Physics Research MTPR-06, vol. 888, no. 1: AIP Publishing, pp. 197–206, 2007. Abstract
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Imam, H., G. Abdellatif, V. Palleschi, M. A. Harith, and Y. E-El.Gamal, "Dynamics of Spatially and Temporally Resolved Laser Induced Al-plasma", AIP Conference Proceedings, vol. 888, no. 1: American Institute of Physics, pp. 197–206, 2007. Abstract
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Imam, H., G. Abdellatif, V. Palleschi, M. A. Harith, and Y. E-El.Gamal, "Dynamics of Spatially and Temporally Resolved Laser Induced A l-plasma", Second International Conference on “Modern Trends in Physics Research”, MTPR -06, , CairoUniv,Cairo,Egypt, April 6-11, 2007. yosr_45_al-plasma.pdf
El-Shafei, A., Dynamics of rotors incorporating squeeze film dampers, : Massachusetts Institute of Technology, 1988. Abstract
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Shabana, E. F., S. K. M. Hassan, and M. A. Shoulkamy, "Dynamics of phytoplankton succession in the river Nile at Minia (Upper Egypt) as influenced by agricultural runoft", Egyptian Journal of Physiological Science (Egypt), 1993. Abstract
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Soliman, W., N. Takada, and K. Sasaki, "Dynamics of nanoparticles production in pressurized liquid-phase laser ablation", proceeding in 27th symposium on plasma processing, Yokohama, 1-3 February,, Japan, 2010.
Harith, M. A., V. Palleschi, A. Salvetti, D. P. Singh, M. Vaselli, G. V. Dreiden, Y. I. Ostrovsky, and I. V. Semenova, "Dynamics of laser-driven shock waves in water", Journal of applied physics, vol. 66, no. 11: AIP Publishing, pp. 5194–5197, 1989. Abstract
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Sakr, A. H., "Dynamics of Heaving Buoy Wave Energy Converters with a Stiffness Reactive Controller", Energies, vol. 14, no. 1, 2021. AbstractWebsite

Heaving buoy wave energy converters (WEC) are floating oscillators, commonly modeled as single-degree-of-freedom vibrating systems. As the wave frequencies change according to the sea state, these devices must be controlled to maximize energy absorption. A new short-term reactive loading control technique is proposed that maximizes power absorption. The control is realized through tuning the effective stiffness of the vibrating system; thus, adjusting its natural frequency to meet the incident waves energy frequency achieving near-to-resonance operation and maximum power absorption. This stiffness is adjusted using an external stiffness, whose value is varied by a continuously variable transmission (CVT) mechanism connected to the buoy. The system equations were derived then solved analytically to calculate the controller bandwidth. Experiments demonstrated promising results for near-resonance tuning at different input frequencies. Results show that an optimized damping value exists at which power absorption can be significantly increased. The WEC equipped with the proposed reactive controller can provide faster tuning actions than long-term techniques. It also works on longer time intervals than phase-control methods; hence, reducing the continuous demands from the PTO system.

Sakr, A. H., S. M. Metwalli, and Y. H. Anis, "Dynamics of Heaving Buoy Wave Energy Converters with a Stiffness Reactive Controller", Energies, vol. 14, no. 1, 2020. AbstractWebsite

Heaving buoy wave energy converters (WEC) are floating oscillators, commonly modeled as single-degree-of-freedom vibrating systems. As the wave frequencies change according to the sea state, these devices must be controlled to maximize energy absorption. A new short-term reactive loading control technique is proposed that maximizes power absorption. The control is realized through tuning the effective stiffness of the vibrating system; thus, adjusting its natural frequency to meet the incident waves energy frequency achieving near-to-resonance operation and maximum power absorption. This stiffness is adjusted using an external stiffness, whose value is varied by a continuously variable transmission (CVT) mechanism connected to the buoy. The system equations were derived then solved analytically to calculate the controller bandwidth. Experiments demonstrated promising results for near-resonance tuning at different input frequencies. Results show that an optimized damping value exists at which power absorption can be significantly increased. The WEC equipped with the proposed reactive controller can provide faster tuning actions than long-term techniques. It also works on longer time intervals than phase-control methods; hence, reducing the continuous demands from the PTO system.

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